Wide-gamut Image Capture

uk: Комп'ютерні науки

description: Colour gamut refers to the range of colours that can be reproduced by an imaging system. The definition of gamut is quite clear for displays and for hard-copy printing. Colour image science experts disagree, however, on the definition—or even applicability of the concept—of gamut for cameras. I disagree that there is any meaningful concept of “capture gamut.” In this note, I review trichromacy and metamerism and discuss various gamuts. I conclude that although metamerism is a phenomenon of what I call “31-space,” gamut lives in 3-space. With suitable colour signal processing, a 3-channel camera is capable of acquiring wide gamut images.

uk: вхід без авторизації


Bruno C. de Cooman

type: Person

keywords: The Graduate Institute of Ferrous Technology (GIFT)

cs: Technické vědy

de: Ingenieurwissenschaften

fi: tekniikka

uk: Інженерія

en: Engineering Sciences

fr: Ingénierie

da: Ingeniørvidenskab

es: Ingeniería

nl: Engineering

description: The first in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture introduces the general concepts which will be explored in detail in subsequent lectures.

TIB AV-Portal

type: Service

type: WebContent

type: MediaObject

@language: en

cs: přihlášení není vyžadováno

de: keine Anmeldung erforderlich

uk: вхід без авторизації

en: no login required

nl: geen login vereist

name: Mechanical properties of steel 1: introduction

University of Cambridge

addressCountry: GB

addressLocality: Cambridge

addressRegion: England

type: Organization

cs: Video

de: Video

fi: Video

uk: Відео

en: Video

fr: Vidéo

da: Video

nl: Video

es: Video


description: The second in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture introduces the general concepts elastic deformation.

uk: вхід без авторизації

name: Mechanical properties of steel 2: Elastic deformation


description: The third in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture introduces what happens beyond the elastic limit, i.e., plastic deformation.

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name: Mechanical properties of steel 3: Plastic deformation


description: The tenth in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture is a continues on dislocations and their role in steels, but including the concepts of stacking fault energy and dissociation.

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name: Mechanical properties of steel 10: dislocations & faults


description: The 24th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the strain hardening of polycrystalline steel.

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name: Mechanical properties of steel 24: polycrystal strain hardening


description: The 21st in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the theory and practice of grain size strengthening.

uk: вхід без авторизації

name: Mechanical properties of steel 21: grain size strengthening


description: The 22nd in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the theory and practice of precipitation hardening.

uk: вхід без авторизації

name: Mechanical properties of steel 22: precipitation hardening


description: The 23rd in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the theory and practice of precipitation hardening.

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name: Mechanical properties of steel 23: precipitation hardening


description: The fourth in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture introduces stress-strain relationships including constitutive functions, yield criteria, plastic instablities and strain rate dependence.

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name: Mechanical properties of steel 4: stress-strain relations


description: The fifth in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture introduces plasticity, yield criteria, multiaxial stresses, Mohr's circles and R-values.

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name: Mechanical properties of steel 5: plasticity


description: The sixth in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture introduces plasticity, yield criteria, multiaxial stresses, Mohr's circles and R-values.

uk: вхід без авторизації

name: Mechanical properties of steel 6: yield criteria for plasticity


description: The seventh in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture develops further the concepts of plasticity with a focus on the formability of steels, particularly those for automotive applications.

uk: вхід без авторизації

name: Mechanical properties of steel 7: evolution of plastic strain


description: The eighth in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture deals in more detail with the formability of steels, particularly those for automotive applications.

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name: Mechanical properties of steel 8: formability


description: The nineth in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. This particular lecture is a detailed exposition of dislocations and their role in steels.

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name: Mechanical properties of steel 9: dislocations


description: The eleventh in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. The video begins with continuing discussion of crystallographic texture, pole figures and the consequences of texture, followed by a new topic on dislocations and other defects in steels.

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name: Mechanical properties of steel 11: texture, dislocations, defects


description: The 12th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Continues the discussion of dislocations and other defects in steels, including for example, jogs and vacancies.

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name: Mechanical properties of steel 12: dislocations and other defects


description: The 13th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with point defects, dislocation loops, irradiation, crystal plasticity.

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name: Mechanical properties of steel 13: defects, irradiation


description: The 14th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the theoretical strength of iron.

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name: Mechanical properties of steel 14: theoretical strength


description: The 15th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the treatment of deformation on transiting from a single crystal to a polycrystal of iron and dislocation dynamics.

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name: Mechanical properties of steel 15: single to polycrystal


description: The 16th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the solid solution strengthening of iron an steel.

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name: Mechanical properties of steel 16: solid solution strengthening


description: The 17th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Continues with the story of solid solution strengthening of iron an steel.

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name: Mechanical properties of steel 17: solid solution strengthening


description: The 18th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the theory and practice of strain hardening.

uk: вхід без авторизації

name: Mechanical properties of steel 18: strain hardening


description: The 19th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the theory and practice of strain hardening.

uk: вхід без авторизації

name: Mechanical properties of steel 19: strain hardening


description: The 20th in a series of lectures given by Professor Bruno de Cooman of the Graduate Institute of Ferrous Technology, POSTECH, South Korea. Deals with the theory and practice of grain size strengthening.

uk: вхід без авторизації

name: Mechanical properties of steel 20: grain size strengthening


description: A course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea. This comprehensive course leads the audience through a large variety of metallurgical aspects that influence steel products.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Alloying elements: lecture 2


description: Professor de Cooman builds on the previous lectures in the sequence, this time dealing with the batch processing of rolled steel sheet, and consequences on properties. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

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name: Modern Steel Products (2014) - Batch Processing: lecture 14


description: Professor de Cooman talks about the cold rolling of steels to achieve the right thickness, shape profile and surface condition, after which the strip may be coated. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

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name: Modern Steel Products (2014) - Overview of Tandem Mill Designs (Cold- Strip Mill): lecture 13


description: Professor de Cooman talks about the continuous casting of steel. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

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name: Modern Steel Products (2014) - Continuous Casting: lecture 9


description: Professor de Cooman builds on the previous lectures in the sequence, this time dealing with the hot-strip mill. The lecture then breaks into a new topic, on the mechanical behaviour of steel, elasticity in particular. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

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name: Modern Steel Products (2014) - Corrosion of coated steel: lecture 15


description: A lecture about the iron-carbon equilibrium phase diagram. This is a part of a course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea. This comprehensive course leads the audience through a large variety of metallurgical aspects that influence steel products.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Fe-C phase diagram: lecture 3


description: Professor de Cooman talks about formable steels. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

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name: Modern Steel Products (2014) - Formable steels: lecture 19


description: Professor de Cooman takes the topic of formable steels further. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Formable steels: lecture 20


description: Professor de Cooman takes the topic of formable steels , in particular the TRIP steels and hot-press forming steels. Both the production and metallurgy of the alloys is described. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Formable steels: lecture 22


description: A lecture about the iron-carbon equilibrium phase diagram. This is a part of a course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea. This particular lecture deals with the principles of grain size control, and thermomechanical processing. This comprehensive course leads the audience through a large variety of metallurgical aspects that influence steel products.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Grain size control: lecture 5


description: A lecture about the iron-carbon equilibrium phase diagram. This is a part of a course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea. This particular lecture deals with the principles of hardenability with respect to martensite, including considerable detail about heat treatments. This comprehensive course leads the audience through a large variety of metallurgical aspects that influence steel products.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Hardenability: lecture 4


description: Professor de Cooman builds on the previous lectures in the sequence, this time dealing with the hot-strip mill. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

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name: Modern Steel Products (2014) - Overview of Conventional Hot Strip Mill (HSM) Design: lecture 12


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name: Modern Steel Products (2014) - Introduction: lecture 1


description: Professor de Cooman talks about ironmaking and steelmaking. This is a part of a course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Ironmaking, Steelmaking: lecture 8


description: Professor de Cooman describes some of the major applications of steel in the context of the production technologies and metallurgy of the alloys. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

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name: Modern Steel Products (2014) - Major Applications: lecture 24


description: Professor de Cooman takes the topic of long product manufacture, including rails. Both the production and metallurgy of the alloys is described. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Structural Steel and Rail: lecture 25


description: Professor de Cooman talks about the hot and cold rolling of steel. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Rolling of Steel: lecture 10


description: Professor de Cooman builds on the previous lecture in the sequence, about the hot and cold rolling of steel. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Rolling of Steel: lecture 11


description: Professor de Cooman finishes his lecture on "Standards" and begins one on ironmaking using the blast furnace. This is a part of a course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Standards, Ironmaking: lecture 7


description: A lecture about the standards for steels; such standards are routinely used in the purchase and use of commercially available alloys. This is a part of a course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Steel Standards: lecture 6


description: Professor de Cooman talks about strengthening mechanisms of particular phases or phase-mixtures. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Strengthening mechanisms: lecture 18


description: Professor de Cooman talks about some of the strengthening mechanisms in steels. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Strengthening mechanisms: lecture 16


description: Professor de Cooman talks about strengthening mechanisms, in particular, mechanical twinning, dislocation interactions and more complex phenomena. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Twinning & Dislocations: lecture 17


description: Professor de Cooman takes the topic of rod and bar manufacture, including non-destructive testing. Both the production and metallurgy of the alloys is described. This is a part of a course of lectures given at the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.

uk: вхід без авторизації

name: Modern Steel Products (2014) - Wire & Rod Mills: lecture 23


description: A series of lectures on steels, given by Professor Bruno de Cooman, Graduate Institute of Ferrous Technology (GIFT), POSTECH, Republic of Korea

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name: Modern Steel Products (2015) - lecture 3


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name: Modern Steel Products (2015) - lecture 1


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name: Modern Steel Products (2015) - lecture 2


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name: Modern Steel Products (2015) - lecture 4


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name: Modern Steel Products (2015) - lecture 5


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name: Modern Steel Products (2015) - lecture 6


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name: Modern Steel Products (2015) - lecture 7


17. Vorlesung: Implizite Funktionen

cs: Matematika

de: Mathematik

fi: matematiikka

uk: Математика

en: Mathematics

fr: Mathématiques

da: Matematik

es: Matemáticas

nl: Wiskunde

de: Mathematik, Naturwissenschaften

uk: Математика, природничі науки

en: Mathematics, Natural Sciences

@language: de

uk: вхід без авторизації

Technische Universität Darmstadt

addressCountry: DE

addressLocality: Darmstadt

addressRegion: Hesse


uk: Математика, природничі науки

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name: 7. Vorlesung: Eigenschaften stetiger Funktionen


uk: Математика, природничі науки

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name: 25. Vorlesung: Die Transformationsformel


15. Vorlesung: Der Umkehrsatz

uk: Математика, природничі науки

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12. Vorlesung: Der Mittelwertsatz

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name: 18. Vorlesung: Beweis zu impliziten Funktionen und Niveaumengen


16. Vorlesung: Beweis des Umkehrsatzes

uk: Математика, природничі науки

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uk: Математика, природничі науки

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name: 4. Vorlesung: Banach'scher Fixpunktsatz und Kompaktheit


Kap. 28: Uneigentliche Integrale

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Kap. 23: Trigonometrische Funktionen

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Kap. 25: Treppenfunktionen

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Kap. 9: Teilfolgen und Häufungswerte

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Kap. 18: Stetigkeit

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Kap. 24.7: Satz von Taylor

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Kap. 11: Reihen

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Kap. 14: Potenz-Reihen

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Kap. 0: OWO-Vorlesung

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Kap. 1: Organisatorisches & Einführung

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name: Kap. 7: Konvergenz von Folgen - Beispiele


Kap. 6: Konvergenz von Folgen

uk: Математика, природничі науки

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uk: Математика, природничі науки

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name: Kap. 12: Konvergenz-Kriterien für Reihen Nachaufnahme


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name: Kap. 16 und 17: Komplexe Zahlen und Grenzwerte bei Funktionen


Kap. 27: Integrationstechniken

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Kap. 24: Höhere Ableitungen

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name: Kap. 26.8: Hauptsatz der Differential- und Integralrechnung


uk: Математика, природничі науки

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name: Kap. 21: Gleichmäßige Stetigkeit *Nachaufzeichnung*


Kap. 17: Funktionengrenzwerte

uk: Математика, природничі науки

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Kap. 20: Funktionenfolgen

uk: Математика, природничі науки

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Kap. 4: Folgen und Abzählbarkeit

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name: Kap. 19: Eigenschaften stetiger Funktionen


Kap. 6: Vorlesung "e"

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Kap. 22.14: Differenzierbarkeit II

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Kap. 22: Differenzierbarkeit

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Kap. 2: Die reellen Zahlen

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Kap. 26: Das Regelintegral

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Kap. 13: Cauchy-Produkt

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Kap. 10: Cauchy-Folgen

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name: Kap. 5: Binomialkoeffizienten, Fakultäten und Wurzeln


Kap. 3: Archimedisches Axiom

uk: Математика, природничі науки

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Kap. 22.22: Ableitung von Potenzreihen

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Kap. 4.6: Vektoranalysis

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name: Kap. 2.12: Potenzialfelder & Gebietsintegral


Kap. 1.3: Parameterintegral

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Kap. 4.12: Orthogonale Matrizen

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Kap. 3.7: Matrizenrechnung

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Kap. 3.20: Matrix-Gleichungssysteme

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Kap. 1.12: Lineare Unabhängigkeit

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Kap. 2: Lineare Gleichungssysteme

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Kap. 4: Vektoranalysis Teil 3

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Kap. 4.8: Lineare Abbildungen - Teil 2

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Kap. 4: Lineare Abbildungen

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Kap. 2.4: Kurvenintegral

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Kugelkoordinaten / Divergenz & Rotation

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uk: Математика, природничі науки

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name: Hauptachsentransformation & Differentialrechnung in mehreren Variablen


Kap. 3.3: Gebietsintegral

uk: Математика, природничі науки

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name: Kap. 3.15: Extremwerte unter Nebenbedingungen


Kap. 3.5: Extremwerte

uk: Математика, природничі науки

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Kap 6.8: Eigenvektoren

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name: Differentialrechnung in mehreren Variablen - Teil 5


Bearings and Steels

description: Lectures by Alan Begg, followed by Harry Bhadeshia and Pedro Rivera, at a meeting held in Cambridge University on the 8th of August.

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Physical Metallurgy of Steels - Part 1

keywords: Bhadeshia, Harshad Kumar Dharamshi Hansraj

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 1 here introduces the martensitic transformation.

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Physical Metallurgy of Steels - Part 10

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 10 deals with time-temperature-transformation (TTT) diagrams, overall transformation kinetics, and then moves on to introduce TRIP (transformation induced plasticity) steels.

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Physical Metallurgy of Steels - Part 11

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 11 deals with steels which undergo stress-induced martensitic transformation, the so-called TRIP steels or TRIP-assisted steels.

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Physical Metallurgy of Steels - Part 12

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. The final Part 12 deals with the creation of the world's first bulk nanocrystalline metal.

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Physical Metallurgy of Steels - Part 2

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 2 finishes with the phenomenological theory of martensite crystallography and aspects of the thermodynamics of martensitic transformation.

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Physical Metallurgy of Steels - Part 3

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 3 deals with the mechanism of the bainite transformation.

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Physical Metallurgy of Steels - Part 4

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 4 deals with the design of carbide-free bainitic steels.

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Physical Metallurgy of Steels - Part 5

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 5 deals with the formation of Widmanstaetten ferrite in steels.

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Physical Metallurgy of Steels - Part 6

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 6 deals with the formation of allotriomorphic and idiomorphic ferrite in steels. Growth is treated as diffusion-controlled and by a reconstructive transformation mechanism.

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Physical Metallurgy of Steels - Part 7

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 7 deals with the thermodynamics of irreversible processes. Growth is treated as diffusion-controlled and by a reconstructive transformation mechanism. Note: this video has the inset on thr top right missing due to a technical problem during recording

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Physical Metallurgy of Steels - Part 8

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 8 deals with the growth of allotriomorphic ferrite in multicomponent steels. Growth is treated as diffusion-controlled and by a reconstructive transformation mechanism.

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Physical Metallurgy of Steels - Part 9

description: A series of 12 lectures on the physical metallurgy of steels by Professor H. K. D. H. Bhadeshia. Part 9 deals with pearlite, which involves the cooperative growth of ferrite and cementite at a common transformation front with the austenite.

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description: A elegant lecture on the creativity and thought processes needed to nurture the already vibrant steels research and development. A lecture by Professor Hae-Geon Lee of the Graduate Institute of Ferrous Technology, POSTECH, South Korea.

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name: Steel Technology, Ingenuity and the Future


description: Diese Animation stammt aus dem Kurs Fertigungstechnik im Online Fernstudiengang Wirtschaftsingenieurwesen. Im Maschinenbau eingesetzte Steuerungen sind Programmsteuerungen, d.h. die Informationen zum Herstellen eines Werkstückes müssen in einem Programm festgelegt werden, das in jedem Falle der Anwender der Maschine erstellen muss. Von der Art der Speicherung dieser Informationen hängt die Funktionsweise der Steuerung ab. Ausschlaggebend sind dabei die Weginformationen.

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name: Fertigungstechnik - Programmierung einer NC-Maschine


cs: Informatika

de: Informatik

fi: tietojenkäsittelytiede

uk: Комп'ютерні науки

en: Computer Science

fr: Informatique

da: Datalogi

es: Ciencias de la Computación

nl: Informatica

description: The use of DWARF debug information to dynamically project the embedded extension language Luas global environment onto the NetBSD kernels internal state. Traditionally, an embedded extension language such as Lua is only provided with limited and controlled access to its host environment. That access being defined ahead-of-time by a set of hand-written or generated C bindings. In this presentation we will explore an alternative: the use of DWARF debug information and the in-kernel debugger, ddb, to provide scripts running on a Lua interpreter embedded in the NetBSD kernel with simple and unfetted access to the entire kernel state.

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name: What happens when a dwarf and a daemon start dancing by the light of the silvery moon?

name: Berkeley System Distribution (BSD), Andrea Ross


uk: Комп'ютерні науки

description: OpenBSD has supported routing domains (aka VRF-lite) since 4.6, released in 2009. In 2014, OpenBSD 5.5 gained support for IPv6 routing domains. At its most basic, routing domains are simply multiple routing tables in the same kernel. While seeming like a simple task, there are many gotchas involved in using routing domains in a production network. This talk will give a brief history, as well as some scenarios for why and how you would use routing domains, while describing several of the issues that came up during the initial deployments. Routing domains allows (for example) an airport to radically simplify their physical network configuration, saving costs and configuration overhead. A small demonstration network will be used to illustrate common and uncommon use cases.

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name: Using routing domains / routing tables in a production network


uk: Комп'ютерні науки

description: Historically the PC-BSD project has had easy-to-use, powerful GUI utilities for package and jail management. However, being X11/Qt applications, this made their usefulness limited only to workstations, or other systems running a graphical environment, not particularly well suited for FreeNAS or a traditional FreeBSD server. With the rise of web-browser driven system management, it was also time for PC-BSD to begin converting some of its more popular tools into web-manageable forms. Over the summer of 2014, a new project was started to re-create the AppCafe, a pkgng front-end, and the Warden, a jail manager, into web-accessible utilities for inclusion into both PC-BSD and FreeNAS. This front-end allows remote management of jails and packages on the upcoming FreeNAS 10, as well as system package management on FreeBSD and PC-BSD. This talk will provide a high-level overview of the functionality of the new AppCafe / Warden, along with technical details about the implementation for developers.

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name: Unifying jail and package management for PC-BSD, FreeNAS and FreeBSD.: Browser-based package and jail management


uk: Комп'ютерні науки

description: Most system administrators no longer edit the majority of configuration files by hand, they use automation and configuration management tools like puppet, saltstack, ansible, and the like. Many utilities and daemons in the FreeBSD base system use their own custom configuration file format. While these various different formats are usually accompanied by man pages, they do not lend themselves to automation or programmatic editing. Space and tab delimited files make it harder to extract a specific value, and difficult to edit that value in place, whereas nested key-value pairs are easier to read, and are easily addressed using libUCLs dotted notation. To solve this, I propose teaching the various utilities and daemons in the FreeBSD base system to speak UCL the Universal Config Language, as implemented by libucl. In addition, I propose adding two small tools to the base system to make the administration of such config files easier for humans and automated scripts.

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name: UCL for FreeBSD: Universal Configuration Files


Early days of Unix and design of sh

uk: Комп'ютерні науки

uk: вхід без авторизації


uk: Комп'ютерні науки

description: OpenBSD introduced the signify tool to cryptographically sign and verify releases one year ago. I'll talk about the design and implementation of the tool, how the OpenBSD project uses it, the necessary changes to the release process to incorporate signify, and other lessons learned in the past year.

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name: signify: Securing OpenBSD From Us To You


uk: Комп'ютерні науки

description: In this talk, I will present our research on protecting FreeBSD applications and the FreeBSD kernel from attacks. I will briefly describe the KCoFI system which protects the FreeBSD kernel from control-flow hijack attacks (such as classic buffer overflow attacks) and the Virtual Ghost system which protects applications from a compromised operating system kernel. Both KCoFI and Virtual Ghost are built using the Secure Virtual Architecture (SVA) (an LLVM-based infrastructure for enforcing security policies through compiler instrumentation and hardware techniques). In this talk, I will present our work on using the Secure Virtual Architecture (SVA) to protect FreeBSD applications and the FreeBSD kernel from security attacks. SVA is an LLVM-based infrastructure that permits us to use compiler instrumentation techniques to enforce security policies on both application and kernel code. In this talk, I will briefly describe how we used SVA to implement KCoFI: a system that enforces control-flow integrity and code segment integrity on the FreeBSD kernel to protect it from control-flow hijack attacks. I will then describe how we extended KCoFI to build Virtual Ghost. Virtual Ghost protects applications from a compromised operating system kernel. I will describe how Virtual Ghost uses compiler instrumentation to prevent the FreeBSD kernel from spying on and corrupting private application data and how it prevents the kernel from maliciously modifying application control flow (while still supporting features such as signal handlers and process creation).

uk: вхід без авторизації

name: Protecting FreeBSD with Secure Virtual Architecture


uk: Комп'ютерні науки

description: PCI Single Root I/O Virtualization (SR-IOV) is an optional part of the PCIe standard that provides hardware acceleration for the virtualization of PCIe devices. When SR-IOV is in use, a function in a PCI device (known as a Physical Function, or PF) will present multiple Virtual PCI Functions (VF) on the PCI bus. These VFs are fully independent PCI devices that can use the functionality of the PF without the overhead of synchronizing with the driver for the PF or other VFs. SR-IOV allows for great improvements in network performance in virtualized environments compared to traditional software-only network virtualization. SR-IOV is an important virtualization technology supported in a number of hypervisors. Although FreeBSD has long had support for acting as a guest OS in an SR-IOV environment, to date it has not been possible to use SR-IOV in combination with native virtualization technologies like vimage jails or bhyve. This talk will cover the new SR-IOV infrastructure added to FreeBSD PCI subsystem, which allows the use of FreeBSD as an SR-IOV host. Discussion will focus on the use of SR-IOV by system administrators, with the balance of the talk devoted to the kernel API provided to PF driver maintainers.

uk: вхід без авторизації

name: PCI SR-IOV on FreeBSD: Hardware-assisted virtualization of PCI devices


uk: Комп'ютерні науки

description: Use pkg(8) to distribute, install and upgrade the FreeBSD base system. This talk will describe why packaging the base system, and what is/was need to be done to allow packaging the base system: - Prerequisite changes made in pkg(8) to allow handling the base particularities - Prerequisite changes made or needed in base build system to be able to create sane packages - Granularity of the packaging - Plans to satisfy most of our users: embedded who wants small packages, old timers who wants big fat packages, administrators who wants flexibility, developers who wants to be able to provides custom packages for large testings and all others. - What new possibilities/features will packaging base offer to users.

uk: вхід без авторизації

name: Packaging FreeBSD base system (2 of 2): A rainbow bikeshed


uk: Комп'ютерні науки

uk: вхід без авторизації

name: Packaging FreeBSD base system (1 of 2): A rainbow bikeshed


uk: Комп'ютерні науки

description: OpenZFS send and receive forms the core of remote replication products, allowing incremental changes between snapshots to be serialized and transmitted to remote systems. In the past year, we have implemented several new features and performance enhancements to ZFS send/receive, which I will describe in this talk. This talk will cover: - Resumable ZFS send/receive, which allows send/receive to pick up where it left off after a failed receive (e.g. due to network outage or machine reboot). - ZFS receive prefetch, which is especially helpful with objects that are updated by random writes (e.g. databases or zvols/VMDKs). - ZFS send rebase, which can send changes between arbitrary snapshots; the incremental source is not restricted to being an ancestor of the snapshot being sent. In this talk, I will cover the impact of these changes to users of ZFS send/receive, including how to integrate them into remote replication products. I will also give an overview of how zfs send/receive works, and how these enhancements fit into the ZFS codebase.

uk: вхід без авторизації

name: New OpenZFS features supporting remote replication


uk: Комп'ютерні науки

description: Virtualized systems running on hypervisors such as bhyve, ESXi, Xen, etc are increasingly important in the datacenter. With a long history of stable regular releases, security, and networking performance OpenBSD is very well suited to take advantage of virtualization and to help improve the state of the art. This presentation will explore why OpenBSD is well suited to deploying as virtual network devices on the various hypervisors and present practical examples of using OpenBSD for production networking in a virtual system. I will discuss what tools are in base, what tools are easily installable from ports/packages, current automation and management tools, and how to use them effectively using specific real world examples from large data center networks. Will present examples and methods for using OpenBSD to build routers, firewalls, and loadbalancers running on the various hypervisors. Will talk about methods for automating deployment, configuration, and integration with existing vendors. Will also address possible future applications in switching. Will discuss how to use the tools in OpenBSD to run a better and faster network with fewer problems and how virtualization can be part of that. In addition to the above I will discuss why the OpenBSD community in particular should care about virtualization and work to improve the state of engineering there.

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name: Networking with OpenBSD in a virtualized environment


uk: Комп'ютерні науки

description: Multipath TCP (MPTCP) allows multi-homed hosts to make use of multiple addresses over a single TCP connection. This talk will cover the software architecture of a FreeBSD implementation of MPTCP, as well as presenting some case studies and performance results. Multipath TCP (MPTCP) was designed as an extension to TCP, allowing a multi-homed host to utilise multiple network interfaces when transferring data. MPTCP is in the process of being standardised by the IETF as RFC 6824. Supported by funding from Cisco Systems, the Centre for Advanced Internet Architectures released several patches against FreeBSD-10 (from March 2013) to add rudimentary MPTCP capabilities and code paths. More recently, the FreeBSD Foundation provided funding to continue development of the MPTCP stack, building on the existing work. The stack has since then been re-designed and improved beyond the early experimental versions. In this talk I will provide an overview of the Multipath TCP (MPTCP) protocol before discussing the software design, features and performance of our FreeBSD MPTCP implementation. I will also present some basic performance testing, case studies and usage examples (showing how MPTCP reacts to different paths coming and going while connections stay active).

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name: Multipath TCP for FreeBSD: An introduction to the protocol and our implementation for FreeBSD.


uk: Комп'ютерні науки

description: The networking subsystems of any operating system have grown in complexity as the set of protocols and features supported has grown since the birth of the Internet. Firewalls, Virtual Private Networking, and IPv6 are just a few of the features present in the FreeBSD kernel that were not even envisioned when the original BSD releases were developed over 30 years ago. Advances in networking hardware, with 10Gbps NIC cards being available for only a few hundred dollars, have far outstripped the speeds for which the kernels network software was originally written. As with the increasing speed of processors over the last 30 years, systems developers and integrators have always depended on the next generation of hardware to solve the current generations performance bottlenecks, often without resorting to any coherent form of measurement. Our paper shows developers and systems integrators at all proficiency levels how to benchmark networking systems, with specific examples drawn from our experiences with the FreeBSD kernel. Common pitfalls are called out and addressed and a set of representative tests are given. A secondary outcome of this work is a simple system for network test coordination, Conductor, which is also described.

uk: вхід без авторизації

name: Measure Twice, Code Once: Network Performance Analysis for FreeBSD


uk: Комп'ютерні науки

description: The original audio stream of my presentation at BSDCan 2015 in Ottawa (except for the first 30 seconds and the last four minutes; those two chunks failed to record in Ottawa, so i had to re-record them). The associated video stream contains the presentation slides captured off the beamer input by the conference organizers, so video and audio are in sync. Topics are the new man(1), man.conf(5), man.cgi(8); eqn(7) HTML5 and MathML output; UTF-8 improvements, afl(1) audit, -Wunsupp, pod2mdoc(1), a status summary in various operating systems, and possible future directions.

uk: вхід без авторизації

name: mandoc: becoming the main BSD manual toolbox - BSDCan 2015 presentation


uk: Комп'ютерні науки

description: As the types of personal computers continue to increase, the traditional desktop computer is gradually being shifted to a smaller subset of the total systems in use. This presents a problem for open source operating systems, as the available open source graphical environments are increasingly designed for systems with powerful hardware or traditional mouse/keyboard inputs. The open-source Lumina desktop environment is designed to solve these problems by meeting its goals of being a highly flexible and scalable interface that runs with relatively little hardware requirements. The project also provides a simple framework for integrating OS-specific functionality directly into the interface for ease-of-use without causing conflict with the underlying system or affecting portability. This session will take a top-level view of the Lumina desktop project, breaking it down to its components, explaining the framework and methodology, and listing the work that is still yet to be completed to achieve its goals.

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name: Lumina-DE: Redefining the Desktop Environment for Modern Hardware


uk: Комп'ютерні науки

description: Presenting a project for large-scale and plug&play network appliance deployment. How a lazy network administration do for building, deploying and manage thousand of network appliances all over the world ? This talk presents an example of solution combining FreeBSD, OpenVPN and Ansible for answering to this question. Starting from the initial needs of providing: multi-role network appliances: VPN Router, Wifi Access Point, Captive Portal, Firewalls, etc

uk: вхід без авторизації

name: Large-scale plug&play x86 network appliance deployment over Internet: An example of nanobsd, openvpn and ansible integration


uk: Комп'ютерні науки

description: Jetpack brings application containers, popularized by Docker on Linux, to FreeBSD Application containers are a new approach to virtualization, popularized in last two years by Docker - a Linux implementation that all but monopolized the market. Jetpack is an application container runtime for FreeBSD that implements the App Container Specification using jails and ZFS. I will speak about how the container paradigm is different from the existing jail management solutions, how Jetpack fits into the general landscape of container runtimes, and about Jetpack's inner workings and implementation challenges. A quick demo is not unlikely.

uk: вхід без авторизації

name: Jetpack, a container runtime for FreeBSD (part 2 of 2): Breaking the Linux/Docker Monoculture


uk: Комп'ютерні науки

uk: вхід без авторизації

name: Jetpack, a container runtime for FreeBSD (part 1 of 2): Breaking the Linux/Docker Monoculture

name: Berkeley System Distribution (BSD), Andrea Ross


uk: Комп'ютерні науки

description: OpenBSD includes a new web server in its base system that is based on relayd and replaced nginx. OpenBSD includes a brand new web server that was started just two weeks before the 5.6 release was finished. Work is in active progress and significant improvements have been done since its initial appearance. But why do we need another web server? This talk is about the history, design and implementation of the new httpd(8). About 17 years ago, OpenBSD first imported the Apache web server into its base system. It got cleaned up and improved and patched to drop privileges and to chroot itself by default. But years of struggle with the growing codebase, upstream, and the inacceptable disaster of Apache 2 left OpenBSD with an unintended fork of the ageing Apache 1.3.29 for many years. When nginx came up, it promised a much better alternative of a popular, modern web server with a suitable BSD license and a superior design. It was patched to drop privileges and to chroot itself by default and eventually replaced Apache as OpenBSD's default web server. But history repeated itself: a growing codebase, struggle with upstream and the direction of its newly formed commercial entity created a discontent among many developers. Until one day at OpenBSD's g2k14 Hackathon in Slovenia, I experimented with relayd and turned it into a simple web server. A chain of events that were supported by Bob Beck and Theo de Raadt turned it into a serious project that eventually replaced nginx as the new default. It was quickly adopted by many users: "OpenBSD httpd" was born, a simple and secure web server for static files, FastCGI and LibreSSL-powered TLS. And, of course, "httpd is web scale".

uk: вхід без авторизації

name: Introducing OpenBSD's new httpd (part 2 of 2)


uk: Комп'ютерні науки

uk: вхід без авторизації

name: Introducing OpenBSD's new httpd (part 1 of 2)


I/O Scheduling in CAM

uk: Комп'ютерні науки

description: SSD have many unique characteristics not present in spinning drives. Applications have different access patterns and desire different performance trade offs. Geom offers some scheduling facilities, but they are hampered by no visibility into the underlying device's characteristics. Scheduling I/O in CAM allows peripheral drivers to use their detailed knowledge of a drive to schedule I/Os that are optimal for the application's needs (with hints from the application) Netflix operates a small fleet of Video servers for its Video Streaming service . There are two main kinds of server used in our operations. We have a storage appliance, which is used for long-tail access and filling other servers. We have a Flash appliance for serving popular titles. Our service has a certain amount of change each day, as titles change in popularity, contracts expire or come on line, etc. While our workload is read mostly, we also need to write and trim the drive from time to time. With flash drives we found any sustained write activity above a certain level lead to a sudden decrease in the read performance, reducing our effective capacity at times when this happens. By clever scheduling, one can reduce these effects to keep read performance good, but write performance will suffer. The traditional scheduler didn't allow any efficient way to do this, short of write throttling in the application. While this does help mitigate things, when there's many threads or processes acting in parallel it can be hard for the application to coordinate everything, and the many layers between the application and the disk can interfere with even perfect coordination. Moving the throttling to the lowest layer in the system helps smooth out the bumps, as well as adapt dynamically to the changing workloads (you can write more, if you need to read less, for example).

uk: вхід без авторизації


uk: Комп'ютерні науки

description: In this talk, we'll look at Limelight's global CDN architecture and the practice of large scale web operations with FreeBSD. We'll investigate how FreeBSD makes these tasks easier and the strategies and tools we've developed to run our operations. We'll then look at why the engineering team chose SaltStack to further improve our operations capabilities and reduce deployment and fault handling times. Finally, we'll finish up with an overview of metrics and monitoring at scale with Zabbix and OpenTSDB. Limelight Networks is one of the "Big Three" CDNs and runs its edge using FreeBSD.

uk: вхід без авторизації

name: FreeBSD Operations at Limelight Networks (part 2 of 2): An Overview of Operating at Internet Scale


uk: Комп'ютерні науки

uk: вхід без авторизації

name: FreeBSD Operations at Limelight Networks (part 1 of 2): An Overview of Operating at Internet Scale


FreeBSD for High Density Servers

uk: Комп'ютерні науки

description: To promote FreeBSD to High Performance Computing or High Density Servers under such circumstances, it is considered to be very important to share the information about how to install, how to setup, how to manage, how to patch and how to fix to work FreeBSD correctly with those machines. In this session, I am going to talk about how to install FreeBSD to MicroModularServer and how to manage and control those servers. To install FreeBSD to High Density Servers including NEC MicroModularServer or HP Moonshot, you need another skill compared to install to common PCs and rack mount servers. This kind of servers (low energy consumption, low computing power and high space efficient) are good for too many edge servers/web servers at limited rack space, for example, as an alternative system for Blade servers or many cores servers like Sun Fire T1000/T2000.

uk: вхід без авторизації


uk: Комп'ютерні науки

description: Have you ever wished you could actually replace a troll with a very small shell script? Maybe you can. It's time to take charge and work on solving these situations from within the open source community. The internet is full of trolls. We know that this always been the case, but in the past year, the harassment coming from some online communities has become international news. There have been death threats, SWAT attacks, threats of sexual violence, hacking attempts, and many other tactics used against those most vocal against the harassment. We're going to talk a little bit about issues regarding diversity. It's no surprise that most of the people being targeted are women, and it can be a difficult thing for many to understand precisely what this harassment looks like. I'm going to show examples of what I personally have dealt with after releasing my open source project to combat harassment. The question is often raised as to why there aren't more women in open source. To answer that, everyone needs to be aware of what a female open source developer can face. Warning: there will be some graphic language. Law enforcement doesn't have an adequate way of handling online harassment. The sites being used as a method of communication don't have an adequate way of handling online harassment. Terms of Service are created not to protect the users, but to protect the interest of the companies that wrote them. However, not all is lost. With open APIs, we can work at creating safer spaces for those being targeted. I'll discuss the initial release of ggautoblocker, the problem it solved, and the roadmap for development going forward. There are many other tools that are needed. There are many ways to contribute to helping mitigate this problem. This is a new approach to an old problem, and a lot of commercial companies are already looking at ways to sell a solution. The ability to be safe should be open to all and not come at a price.

uk: вхід без авторизації

name: Fighting Harassment with Open Source Tools: Engineering a Solution for Social Problems


uk: Комп'ютерні науки

description: Three years ago FreeBSD got new subsystem called CTL (CAM Target Layer), providing SCSI target device emulation at kernel level. It allowed to bring FibreChannel target support in FreeBSD to significantly new level, and later was integrated with the new iSCSI stack. This talk will describe CTL internal organization, improvements done during the last year, results and perspectives. It will include overview of modern SCSI extensions, known as VMWare VAAI and Microsoft ODX, and their CTL implementation.

uk: вхід без авторизації

name: Feature-rich and fast SCSI target with CTL and ZFS


uk: Комп'ютерні науки

description: Datacenter TCP (DCTCP) achieves low latencies for short flows while maintaining high throughputs for concurrent bulk transfers, but requires changes to both endpoints, which presents a deployment challenge. This presentation introduces extensions to DCTCP that enables one-sided deployment when peers implement standard TCP/ECN functionality. This makes DCTCP significantly easier to deploy incrementally. We also improve DCTCP in two-sided deployments by refining ECN processing and the calculation of the congestion estimate. A FreeBSD kernel implementation of these DCTCP improvements demonstrates better performance than the original DCTCP variant, and validates that incremental one-sided deployments see benefits similar to those previously only achievable in two-sided deployments.

uk: вхід без авторизації

name: Extensions to FreeBSD Datacenter TCP for Incremental Deployment Support


uk: Комп'ютерні науки

description: Introducing a new way to enable high-speed data transfers over an Ethernet network with minimal CPU involvement RDMA (Remote Direct Memory Access) is growing in popularity in Linux and Windows systems as a way to transfer large amounts of data with low latency and minimal involvement from the CPU. However RDMA InfiniBand drivers in FreeBSD were not updated, requiring users to create or port their own implementation of RDMA, and RDMA over Ethernet was not available in FreeBSD. This talk will describe how RDMA works and review the new addition of RoCE (RDMA over Converged Ethernet) network drivers in FreeBSD, allowing easier implementation of rapid data transfers with low CPU utilization over Ethernet and InfiniBand. This also enables the use of iSCSI over RDMA via the iSER (iSCSI Extensions for RDMA) protocol. One of InfiniBands valuable capabilities is its support for RDMA (Remote Direct Memory Access) operations across a network, which enable rapid data transfer without involvement of the host CPU in the data path, and data placement to the responder memory without requiring its CPU awareness. RoCE (RDMA over Converged Ethernet) is a standard for RDMA over Ethernet. It provides true RDMA semantics for Ethernet and allows InfiniBand transport applications to work over an Ethernet network. FreeBSD is frequently used for storage purposes and RDMA capability has a high potential of improving performance in such storage applications. A good example for that is iSER (iSCSI Extensions for RDMA), a module being developed nowadays for FreeBSD, which enables the use of iSCSI over RoCE. The main idea of this talk is a short overview of RDMA Its principles, key components and its main advantages. Additionally, it will cover the use of RoCE - implementation architecture, obstacles we overcame in the development, and a quick browse of RoCEs different capabilities and milestones.

uk: вхід без авторизації

name: Expanding RDMA (Remote Direct Memory Access) capability over Ethernet in FreeBSD: Introducing a new way to enable high-speed data transfers over an Ethernet network with minimal CPU involvement


uk: Комп'ютерні науки

description: In past years, we have shown how to achieve very high networking speeds in bare metal and VMs using the netmap framework: embarrassingly high packet rates on bare metal, comfortably good on VMs through conventional device emulation techniques. In this talk we show how to fill the speed gap between HW and VMs with a non conventional use of netmap, namely virtual passthrough. In this mode of operation, the guest VM uses directly the host's netmap port (thus saving extra data copies), while notifications are dispatched efficiently between guest and host. Thanks to this technique we can achieve communication speeds between untrusted guests in the order of 20 Mpps, and reach 50 Mpps between trusted guests across netmap pipes.

uk: вхід без авторизації

name: Even faster VM networking with virtual passthrough


uk: Комп'ютерні науки

description: Cloud computing meets fine-grained capabilities CloudABI is a new runtime environment that attempts to make it easier to use UNIX-like operating systems at the core of a cloud computing platform. Instead of offering full machine virtualization (e.g., bhyve) or requiring the use of intrusive OS-level virtualization techniques (e.g., Jails), end users can simply provide a set of binaries that communicate with the operating system over a secure and compact POSIX-like interface. Advantages include ease of maintenance and increased security. Over the last couple of years, we've seen the use of Capsicum increase. It's already being used to harden services like hastd and sshd, but also in interactive tools like tcpdump. CloudABI attempts to extend the scope of Capsicum by providing a light-weight POSIX-like binary interface that is purely based on the principles of Capsicum. CloudABI can be used at the core of a cloud computing service. Instead of using full machine virtualization (Xen, bhyve, KVM) or techniques that attempt to virtualize namespaces (FreeBSD Jails, Linux cgroups), CloudABI makes it possible to safely run user-provided executables with very low CPU/memory overhead, but also without any complex system configuration. Compared to other UNIX ABIs (Linux, FreeBSD, etc), CloudABI is relatively compact. The number of system calls is low (~60) and all data types and structures have been decoupled from the public C runtime environment, meaning that it is relatively straight-forward to add support for CloudABI to other operating systems. Implementations for FreeBSD and NetBSD already exist. An implementation for the Linux kernel is being worked on. This allows users of such computing platforms to run the same executables without targeting a specific operating system. There is no need to recompile. CloudABI uses Clang as its C/C++ compiler. It ships with a modern C library that is specifically designed to work in a capabilities-centric environment. Interfaces that typically tend to break when using Capsicum on FreeBSD (e.g., locales, timezones, DNS) may still operate correctly in this environment. The C library is almost entirely thread-safe and has high testing coverage. CloudABI attempts to abstract away traditional UNIX concepts that are not applicable to pure cloud computing environments, such as UNIX process credentials management (local users and groups), file system access control management and terminal handling.

uk: вхід без авторизації

name: CloudABI Cloud computing meets fine-grained capabilities


CheriBSD: A research fork of FreeBSD

uk: Комп'ютерні науки

description: CheriBSD is a fork of FreeBSD to support the CHERI research CPU. We have extended the kernel to provide support for CHERI memory capabilities as well as modifying applications and libraries including tcpdump, libmagic, and libz to take advantage of these capabilities for improved memory safety and compartmentalization. We have also developed custom demo applications and deployment infrastructure for our table demo platform. In this talk I will discuss the challenges facing a long running, public fork of FreeBSD. The challenges I discuss will include keeping up with current, our migration from Perforce to Git and the difficulty--and value--of upstreaming improvements. I will also cover our internal and external release process and the products we produce. CheriBSD targets a research environment, but lessons learned will apply to many environments building products or services on customized versions of FreeBSD.

uk: вхід без авторизації


BSDCan 2015 Closing

uk: Комп'ютерні науки

uk: вхід без авторизації


uk: Комп'ютерні науки

description: Much has been documented about how to use ZFS, but little has been written about how it is implemented. This talk pulls back the covers to describe the design and implementation of ZFS. The content of this talk was developed by scouring through blog posts, tracking down unpublished papers, hours of reading through the quarter-million lines of code that implement ZFS, and endless email with the ZFS developers themselves. The result is a concise description of an elegant and powerful system.

uk: вхід без авторизації

name: An Introduction to the Implementation of ZFS (part 2 of 2)


uk: Комп'ютерні науки

uk: вхід без авторизації

name: An Introduction to the Implementation of ZFS (part 1 of 2)


uk: Комп'ютерні науки

description: A year of tinkering with pkgsrc and others As a pkgsrc developer ensuring a tree of previously added software builds correctly across various systems / architectures and as a "developer?" taking an existing project & applying the methodologies learnt from the *BSD project developers to improve the code base. Covering two angles of one problem (software) embarked on someone who is new to it. Almost a year ago I began to revive Darwin/PowerPC support in pkgsrc to allow up to date packages be build on PowerPC based mac's, at the start it was possible to build less than 8500 packages from the tree on OS X Tiger/PowerPC, sevan.mit.edu is about to exceed 11,427 published 32bit packages for the Darwin/x86 (Figures taken from 2014Q3 bulkbuild by Joyent). This talk will some the issues which needed to be tackled & what's yet to come over the next few months to attempt to build as many of the 15000 possible packages available from pkgsrc on this architecture along with expanding the effort to building to 10 different operating systems across 5 architectures. For the programming angle, discuss my work to clear up the coova-chili code base to use the facilities the operating system provides, introduce functionality from the OpenBSD (e.g. strlcpy) and testing building across the BSD's to improve the codebase.

uk: вхід без авторизації

name: Adventures in building open source software (part 2 of 2)


uk: Комп'ютерні науки

uk: вхід без авторизації

name: Adventures in building open source software (part 1 of 2)


uk: Комп'ютерні науки

description: Adding additional cipher modes may seem simple, but there are many things to consider. Implementing the modes and ensuring security requires more than a simply coding it up. It requires understanding of different standards and computer architecture to make sure things like side channel/timing attacks are addressed or properly understood. Some design decisions can be made to help ensure that consumers of the interface are able to properly use it.

uk: вхід без авторизації

name: Adding AES-ICM and AES-GCM to OpenCrypto


uk: Комп'ютерні науки

description: BSD porters have always struggled with portability of software written by Linux users and never tested elsewhere. GNOME has been particularly difficult. New releases would come with new headaches, every six months. By the time the issues were addressed and fixed upstream, a new release would be out with new issues. In 2014, the FreeBSD GNOME Project changed their approach. jhbuild is now building the full GNOME stack on FreeBSD systems, at least twice daily, directly out of upstream git master. When portability issues creep in, they are addressed immediately often with patches going upstream the same day. When it comes time to build ports from release tarballs, there are no surprises. A direct result of this effort has been two on-time releases of GNOME (3.12 and 3.14) in FreeBSD and GNOME 3 finally landing in the official ports collection. This talk will discuss what was done and how it changed the relationship of the FreeBSD and GNOME projects as well as discussing important issues going forward.

uk: вхід без авторизації

name: a stitch in time: jhbuild: staying on top of portability before it becomes a problem


uk: Комп'ютерні науки

description: by Andy Tanenbaum Based on the MINIX 3 microkernel, we have constructed a system that to the user looks a great deal like NetBSD. It uses pkgsrc, NetBSD headers and libraries, and passes over 80% of the KYUA tests). However, inside, the system is completely different. At the bottom is a small (about 13,000 lines of code) microkernel that handles interrupts, message passing, low-level scheduling, and hardware related details. Nearly all of the actual operating system, including memory management, the file system(s), paging, and all the device drivers run as user-mode processes protected by the MMU. As a consequence, failures or security issues in one component cannot spread to other ones. In some cases a failed component can be replaced automatically and on the fly, while the system is running, and without user processes noticing it. The talk will discuss the history, goals, technology, and status of the project. Research at the Vrije Universiteit has resulted in a reimplementation of NetBSD using a microkernel instead of the traditional monolithic kernel. To the user, the system looks a great deal like NetBSD (it passes over 80% of the KYUA tests). However, inside, the system is completely different. At the bottom is a small (about 13,000 lines of code) microkernel that handles interrupts, message passing, low-level scheduling, and hardware related details. Nearly all of the actual operating system, including memory management, the file system(s), paging, and all the device drivers run as user-mode processes protected by the MMU. As a consequence, failures or security issues in one component cannot spread to other ones. In some cases a failed component can be replaced automatically and on the fly, while the system is running. The latest work has been adding live update, making it possible to upgrade to a new version of the operating system WITHOUT a reboot and without running processes even noticing. No other operating system can do this. The system is built on MINIX 3, a derivative of the original MINIX system, which was intended for education. However, after the original author, Andrew Tanenbaum, received a 2 million euro grant from the Royal Netherlands Academy of Arts and Sciences and a 2.5 million euro grant from the European Research Council, the focus changed to building a highly reliable, secure, fault tolerant operating system, with an emphasis on embedded systems. The code is open source and can be downloaded from www.minix3.org. It runs on the x86 and ARM Cortex V8 (e.g., BeagleBones). Since 2007, the Website has been visited over 3 million times and the bootable image file has been downloaded over 600,000 times. The talk will discuss the history, goals, technology, and status of the project.

uk: вхід без авторизації

name: A reimplementation of NetBSD using a MicroKernel (part 2 of 2)

name: Berkeley System Distribution (BSD), Andrea Ross


uk: Комп'ютерні науки

description: Based on the MINIX 3 microkernel, we have constructed a system that to the user looks a great deal like NetBSD. It uses pkgsrc, NetBSD headers and libraries, and passes over 80% of the KYUA tests). However, inside, the system is completely different. At the bottom is a small (about 13,000 lines of code) microkernel that handles interrupts, message passing, low-level scheduling, and hardware related details. Nearly all of the actual operating system, including memory management, the file system(s), paging, and all the device drivers run as user-mode processes protected by the MMU. As a consequence, failures or security issues in one component cannot spread to other ones. In some cases a failed component can be replaced automatically and on the fly, while the system is running, and without user processes noticing it. The talk will discuss the history, goals, technology, and status of the project. Research at the Vrije Universiteit has resulted in a reimplementation of NetBSD using a microkernel instead of the traditional monolithic kernel. To the user, the system looks a great deal like NetBSD (it passes over 80% of the KYUA tests). However, inside, the system is completely different. At the bottom is a small (about 13,000 lines of code) microkernel that handles interrupts, message passing, low-level scheduling, and hardware related details. Nearly all of the actual operating system, including memory management, the file system(s), paging, and all the device drivers run as user-mode processes protected by the MMU. As a consequence, failures or security issues in one component cannot spread to other ones. In some cases a failed component can be replaced automatically and on the fly, while the system is running. The latest work has been adding live update, making it possible to upgrade to a new version of the operating system WITHOUT a reboot and without running processes even noticing. No other operating system can do this. The system is built on MINIX 3, a derivative of the original MINIX system, which was intended for education. However, after the original author, Andrew Tanenbaum, received a 2 million euro grant from the Royal Netherlands Academy of Arts and Sciences and a 2.5 million euro grant from the European Research Council, the focus changed to building a highly reliable, secure, fault tolerant operating system, with an emphasis on embedded systems. The code is open source and can be downloaded from www.minix3.org. It runs on the x86 and ARM Cortex V8 (e.g., BeagleBones). Since 2007, the Website has been visited over 3 million times and the bootable image file has been downloaded over 600,000 times. The talk will discuss the history, goals, technology, and status of the project.

uk: вхід без авторизації

name: A reimplementation of NetBSD using a MicroKernel (part 1 of 2)


uk: Комп'ютерні науки

description: Kohärent dargestellte Netzwelten bieten intuitiven Zugang zu Inhalten und Diensten, sodass sich Nutzer darin mit ihnen aus der realen Welt vertrauten Mitteln orientieren können. Durch ihre Ausrichtung auf die Bedürfnisse der Nutzer kommen Netzwelten daher als nächste Evolutionsstufe des WWW in Betracht. Zentrale Ansätze wie 3D-City, Kaneva und Secondlife besitzen jedoch einige gravierende Schwachstellen und konzeptuelle Nachteile, durch die breitflächige Inhalts- und Dienstmigrationen und die dazu notwendigen Investitionen erheblich gehemmt werden. Dezentrale Architekturen können hier einen Ausweg bieten. Im Projekt P2Life werden basierend auf Erfahrungen mit bestehenden Ansätzen zur Bereitstellung virtueller Welten allgemeine Anforderungen aufgestellt. Diese bilden die Grundlage für Algorithmen und Methoden zum Aufbau dezentraler Netzwelten mit Hilfe autonomer Server. Im Vortrag werden nach einer kurzen Motivation die elementaren Anforderungen an dezentrale Netzwelten diskutiert und begründet. Es folgt eine überblicksartige Darstellung der verwendeten Methoden und Konzepte, sowie ein Ausblick auf weitere Einsatzgebiete und zukünftige Herausforderungen.

uk: вхід без авторизації

name: Dezentrale Netzwelten als Interaktions- und Handelsplattformen

FernUniversität in Hagen

addressLocality: Hagen

addressRegion: North Rhine-Westphalia


keywords:
Physikalische Chemie
Theoretische Chemie
Vortrag

de: Chemie

fi: kemia

uk: Хімія

en: Chemistry

fr: Chimie

da: Kemi

es: Química

nl: Scheikunde

uk: Математика, природничі науки

description: Prof. Weitzel gibt eine Einführung in die Natur der chemischen Bindung mit Fokus auf den physikalischen Standpunkt.

uk: вхід без авторизації

name: Die chemische Bindung aus Sicht des Physikers

name: Paul Jerabek, Julian Hegemann, Andreas Authmann


Die Entstehung der Elemente

keywords: Vortrag Historie

uk: Математика, природничі науки

description: Andreas Authmann berichtet, welche Phasen vom Urknall ausgehend zur Entstehung der Elemente geführt haben.

uk: вхід без авторизації


Die Farbstoffsolarzelle

keywords:
Physikalische Chemie
Vortrag

uk: Математика, природничі науки

description: Prof. Grätzel (ETH Lausanne) stellt eine neuartige Solarzelle vor.

uk: вхід без авторизації


keywords: Biochemie Vortrag

uk: Математика, природничі науки

description: Prof. Reetz (MPI Mühlheim) talks about the synthesis of enantionselective enzymes through the means of Directed Evolution.

uk: вхід без авторизації

name: Directed Evolution of Enantioselective Enzymes


keywords: Experiment Biochemie

uk: Математика, природничі науки

description: Wir gehen zurück zu unseren Anfängen und stellen GFP her: Begonnen wird mit den Grundlagen der Klonierung.

uk: вхід без авторизації

name: Von der DNA zum Protein: Teil 1: Plasmide, Nukleasen und PCR


keywords: Biochemie Experiment

uk: Математика, природничі науки

description: Julian zeigt und erklärt die nächsten Schritte auf dem Weg zum GFP: Ligation und Transformation.

uk: вхід без авторизації

name: Von der DNA zum Protein: Teil: 2: Ligation und Transformation


keywords: Anorganik Vortrag Festkörperchemie

uk: Математика, природничі науки

description: Welche Eigenschaften und Anwendungen haben Schichtsilicate? Prof. Breu (Uni Bayreuth) erklärt es uns.

uk: вхід без авторизації

name: Eigenschaften und Anwendungen von Schichtsilicaten


keywords:
Vortrag
Physikalische Chemie

uk: Математика, природничі науки

description: Nach der Geschichte der ionischen Flüssigkeit geht Prof. Roling nun auf die Eigenschaften und die Anwendungsmöglichkeiten von ionischen Flüssigkeiten an. Anschließend gibt Marcel Drüschler einen kurzen Einblick in den Umgang mit ionischen Flüssigkeiten im Labor.

uk: вхід без авторизації


Ein neues Konzept für Antibiotika

keywords: Organik Vortrag

uk: Математика, природничі науки

description: Prof. Sieber (TU München) erklärt das Problem der Antibiotikaresistenzentwicklung und einen Ansatz für neuartige Antibiotika, die dieses Problem umgehen könnten.

uk: вхід без авторизації


keywords: Anorganik Experiment Gold Weihnachten

uk: Математика, природничі науки

description: Weihnachtlich inspirierte Versuche im Weihnachts-Special 2009. Wir wünschen allen Zuschauern ein frohes Weihnachtsfest und einen guten Start ins neue Jahr!

uk: вхід без авторизації

name: Die Erzeugung von "Goldregen" - Eine kleine Weihnachts-Chemie


Eine Konvention gegen chemische Waffen

keywords: Historie Vortrag

uk: Математика, природничі науки

description: Prof. Reichardt erzählt von politischen Bewegungen gegen chemische Waffen und ob sie etwas gebracht haben.

uk: вхід без авторизації


Eis und Schnee

keywords: Anorganik Experiment Organik Weihnachten

uk: Математика, природничі науки

description: Julian zeigt in dieser weihnachtlichen Episode von Eis und Schnee inspirierte Experimente.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Professor Roling erzählt etwas zu der Entdeckung und Entwicklung von ionischen Flüssigkeiten.

uk: вхід без авторизації


Ether-Explosion

keywords: Organik Experiment

uk: Математика, природничі науки

description: Prof. Geyer demonstriert, wie man Ether zur Explosion bringt.

uk: вхід без авторизації


Farbige Nickelkomplexe

keywords: Experiment Anorganik

uk: Математика, природничі науки

description: J. Kuttner präsentiert den Ligandenaustausch und die daraus resultierende Farbigkeit vom Nickelkomplexen.

uk: вхід без авторизації


keywords: Experiment Festkörperchemie Anorganik

uk: Математика, природничі науки

description: Diesmal zeigt Wolfgang Hornfeck (AK Harbrecht) am Beispiel einer Iridium-Zink-Verbindung die einzelnen Schritte, die bei einer Festkörpersynthese nötig sind.

uk: вхід без авторизації

name: Der Gang einer intermetallischen Festkörperreaktion


Fragen zu MRSA Therapien

uk: Математика, природничі науки

description: Prof. Sieber (TU München) beantwortet noch ein paar weitere Fragen zu momentanen und zukünftigen Therapiemöglichkeiten von MRSA-Erkrankungen

uk: вхід без авторизації


keywords: Anorganik Arsen Vortrag

uk: Математика, природничі науки

description: Prof. Feldmann (University of Aberdeen) erzählt, wieso Länder in Südostasien eine hohe Arsenkonzentration im Trinkwasser aufweisen, wie sie gemessen wird und wie sich mithilfe von Mumien die Trinkgewohnheiten alter Kulturen nachvollziehen lassen.

uk: вхід без авторизації

name: Fragen zur Problematik von arsenhaltigem Trinkwasser


Gallium

keywords: Anorganik Experiment Vortrag

uk: Математика, природничі науки

description: Andreas Authmann erzählt von Eigenschaften und Anwendungen des Galliums und demonstriert seinen außergewöhnlich niedrigen Schmelzpunkt.

uk: вхід без авторизації


Gedanken zur Selbstorganisation

keywords: Festkörperchemie Anorganik Vortrag

uk: Математика, природничі науки

description: Weitere Gedanken zum Prinzip der Selbstorganisation mit Beispielen von Prof. Breu (Uni Bayreuth).

uk: вхід без авторизації


GFP

keywords: Vortrag Biochemie

uk: Математика, природничі науки

description: Julian Hegemann berichtet über das GFP:

uk: вхід без авторизації


keywords: Vortrag Organik Gold

uk: Математика, природничі науки

description: Dr. Constantin Czekelius (Freie Universität Berlin) zeigt, wie vielseitig Gold als Katalysator in der organischen Chemie verwendet werden kann.

uk: вхід без авторизації

name: Gold-Katalysatoren in der Organischen Synthese


keywords: Organik Gold Vortrag

uk: Математика, природничі науки

description: Dr. Constantin Czekelius (Freie Universität Berlin) beschreibt, wie Gold und andere carbophile Lewissäuren in organischen Synthesen zum Einsatz kommen.

uk: вхід без авторизації

name: Gold-Komplexe als carbophile Lewissäuren


Goldpurpur und Goldsulfid

keywords: Anorganik Experiment Gold

uk: Математика, природничі науки

description: Diesmal demonstriert Julian Hegemann die verschiedenen Farben vom Cassius'schen Goldpurpur, erzählt seine Geschichte und stellt Goldsulfid her.

uk: вхід без авторизації


Hämocyanin und Tyrosinase

keywords: Biochemie Vortrag

uk: Математика, природничі науки

description: Julian Hegemann berichtet über Hämocyanin & Tyrosinase.

uk: вхід без авторизації


keywords:
Vortrag
Experiment
400 Jahre Chemie

uk: Математика, природничі науки

description: Fritjof Schmock erklärt uns den ersten Teil der vorgeführten Versuche aus dem Experimentalvortrag des Hartmann-Symposiums.

uk: вхід без авторизації

name: Erklärung der Experimente des Hartmann-Symposiums I


uk: Математика, природничі науки

description: Fritjof Schmock erklärt uns den zweiten Teil der Experimente des Hartmann-Symposiums.

uk: вхід без авторизації

name: Erklärung der Experimente des Hartmann-Symposiums II


Historie der chemischen Waffen

uk: Математика, природничі науки

description: Prof. Reichardt gibt einen Überblick über die Geschichte der chemischen Waffen.

uk: вхід без авторизації


History of Carbene Chemistry

keywords: Historie Vortrag Organik

uk: Математика, природничі науки

description: Prof. Guy Betrand (University of California, Riverside) talks about the histroy of carbene chemistry, bent allenes and how the discovery of carbenes opened a locked door in chemistry.

uk: вхід без авторизації


keywords:
Physikalische Chemie
Vortrag

uk: Математика, природничі науки

description: Prof. Hampp berichtet von neuartigen Intraokularlinsen und wie die Behandlung von Grauem Star erleichtern können.

uk: вхід без авторизації

name: Einsatz von Zweiphotonenprozessen bei modernen Intraokularlinsen


Iod-Stärke-Reaktion

uk: Математика, природничі науки

description: Julian Hegemann präsentiert und erklärt die Iod-Stärke-Reaktion in Lösung bei verschiedenen Temperaturen.

uk: вхід без авторизації


Kaliumtelluridoindat

keywords: Anorganik Experiment Festkörperchemie

uk: Математика, природничі науки

description: Johanna Heine zeigt die verschiedenen Schritte der Synthese von einem Kaliumtelluridoindat im AK Dehnen.

uk: вхід без авторизації


Kaliumtelluridostannat

uk: Математика, природничі науки

description: Günther Thiele stellt im AK Dehnen rotglühendes Kaliumtelluridostannat her.

uk: вхід без авторизації


Die Chemie der Knicklichter

uk: Математика, природничі науки

description: Prof. Geyer zeigt in Versuchen die Leuchtkraft von Knicklichtern und erklärt die Chemie dahinter.

uk: вхід без авторизації


Komplexe Systeme

keywords:
Vortrag
Physikalische Chemie

uk: Математика, природничі науки

description: Prof. Germano erklärt an Beispielen die Theorie der komplexen Systeme. Dabei zeigt er auch was Simulation solcher Systeme mit Pac-Man gemein haben, inwiefern sich solche Systeme auch in der Finanzwirtschaft wiederfinden lassen und warum Termini des Gebietes den Agenten in den "Matrix"-Filmen Pate standen.

uk: вхід без авторизації


Lumineszenz

keywords: Anorganik Vortrag

uk: Математика, природничі науки

description: Prof. Müller-Buschbaum (Uni Würzburg) beschreibt das Phänomen der Lumineszenz und gibt Anwendungsbeispiele.

uk: вхід без авторизації


Die Chemie der Maikäfer

keywords: Experiment Organik

uk: Математика, природничі науки

description: Prof. Geyer erzählt ein wenig über die Rolle der Maikäfer in der deutschen Kultur und welche besonderen chemische Eigenschaften ihr Exoskelett aufzeigt.

uk: вхід без авторизації


Mangan-Chemie

keywords: Experiment Anorganik

uk: Математика, природничі науки

description: Julian Hegemann zeigt ein paar chemische Experimente ausgehend von Kaliumpermanganat.

uk: вхід без авторизації


keywords: Vortrag Anorganik

uk: Математика, природничі науки

description: Wolfgang Hornfeck vermittelt das Basiswissen über mehrdimensionale Kristallographie und zeigt, wo sie dem Chemiker im Alltag begegnen kann.

uk: вхід без авторизації

name: Grundlagen der mehrdimensionalen Kristallographie


Modern Main Group Chemistry

uk: Математика, природничі науки

description: Prof. Jones (Monash University, Australia) talks about new approaches in the field main group chemistry.

uk: вхід без авторизації


keywords: Vortrag Anorganik Festkörperchemie

uk: Математика, природничі науки

description: Prof. Breu (Uni Bayreuth) berichtet, wie Schichtsilicate für Anwendungen chemisch angepasst werden können.

uk: вхід без авторизації

name: Chemische Modifikationen von Schichtsilicaten


keywords: Vortrag Organik Biochemie

uk: Математика, природничі науки

description: Prof. Diederich (ETH Zürich) erzählt uns, auf welche Weisen Proteine Liganden erkennen und wie dies in der Wirkstoffforschung angewendet werden kann.

uk: вхід без авторизації

name: Untersuchungen zur Molecular Recognition


Multifunktionale MOFs

keywords: Vortrag Experiment

uk: Математика, природничі науки

description: Prof. Müller-Buschbaum (Uni Würzburg) erzählt, welche Eigenschaften und nützlichen Anwendungen MOFs haben können.

uk: вхід без авторизації


Multinäre Clusterverbindungen

uk: Математика, природничі науки

description: Prof. Dehnen erzählt von der Forschung in ihrem Arbeitskreis.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Samuel Heimann und Christopher Pöhlker präsentieren ihre Forschung im Arbeitskreis Dehnen.

uk: вхід без авторизації


Organometallic enzyme inhibitors

keywords: Vortrag Organik

uk: Математика, природничі науки

description: Professor Meggers explains a novel approach to the synthesize of enzyme inhibitors, where his group is utilizing the unique properties of ruthenium based organometallic compounds.

uk: вхід без авторизації


Mangancarbonyle als PhotoCORMs

keywords: Organik Vortrag

uk: Математика, природничі науки

description: Prof. Schatzschneider (Uni Würzburg) erzählt von Einsatzmöglichkeiten von Mangancarbonylen und erklärt, was es mit PhotoCORMs auf sich hat.

uk: вхід без авторизації


Das Prinzip der Photorepzeptoren

keywords: Vortrag Biochemie

uk: Математика, природничі науки

description: Professor Essen erklärt, was Photorezeptoren sind und was sie interessant macht.

uk: вхід без авторизації


Die Klassen der Photorezeptoren

uk: Математика, природничі науки

description: Professor Essen stellt die 7 bekannten Klassen von Photorezeptoren vor und erklärt, was sie ausmacht.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Prof. Trauner (LMU München) berichtet über die Struktur und Chemie der Ionenkänale.

uk: вхід без авторизації

name: Photoschaltbare Blocker von Ionenkanälen


uk: Математика, природничі науки

description: Prof. Tykwinski (University of Erlangen) tells us more about the physical properties of Carbynes (sp-hybridized carbon).

uk: вхід без авторизації

name: Concerning the physical Properties of Carbynes

name: Paul Jerabek, Julian Hegemann, Andreas Authmann


Die Bestimmung von Proteinstrukturen

uk: Математика, природничі науки

description: Prof. Essen erklärt, die man die Strukturen von Proteinen ermitteln kann.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Prof. Diederich (ETH Zürich) berichtet von Protein-Ligand-Wechselwirkungen und deren Quantifizierung.

uk: вхід без авторизації


Questions about Low-Valence Chemistry

uk: Математика, природничі науки

description: During our recording session with Prof. Jones (Monash University, Australia), he was so kind to answer a few additional questions concerning his research area. His answers are shown here.

uk: вхід без авторизації


Radioaktivität im Alltag

keywords: Experiment Vortrag Kernchemie

uk: Математика, природничі науки

description: Prof. Jungclas zeigt und erzählt, wo uns Radioaktivität im Alltag begegnen kann.

uk: вхід без авторизації


keywords: Bioanorganik Vortrag

uk: Математика, природничі науки

description: Prof. Schatzschneider (Uni Würzburg) zeigt auf, wie die Raman-Spektroskopie zur Visualisierung auf Zellebene verwendet wird.

uk: вхід без авторизації


Reaktionen in Feststoffen

keywords:
Festkörperchemie
Physikalische Chemie
Vortrag

uk: Математика, природничі науки

description: Prof. Martin (RWTH Aachen) berichtet, wie Feststoffreaktionen grundlegend ablaufen und welche Stoffe dafür geeignet sind.

uk: вхід без авторизації


keywords: Biochemie Vortrag

uk: Математика, природничі науки

description: Prof. Essen erklärt die Struktur von Ribosomen und was sie mit dem Chemie-Nobelpreis 2009 zu tun hat.

uk: вхід без авторизації

name: Die Ribosomen-Struktur und der Chemie-Nobelpreis 2009


uk: Математика, природничі науки

description: Prof. Martin (RWTH Aachen) erklärt, wie Sauerstoffionenleiter funktionieren und gibt Beispiele.

uk: вхід без авторизації


Seetang, Schafe und Arsen

keywords: Anorganik Arsen Vortrag

uk: Математика, природничі науки

description: Prof. Feldmann (University of Aberdeen) klärt darüber auf, wie man mithilfe von Einfallsreichtum und schottischen Inselschafen den Säugetier-Metabolismus der Arsenverbindungen aus Seetang untersuchen kann.

uk: вхід без авторизації


Das Prinzip der Selbstorganisation

uk: Математика, природничі науки

description: Prof. Kniep (MPI Dresden) erzählt über die Anwendung des Prinzips der Selbstorganisation in anderen Systemen.

uk: вхід без авторизації


Solvatisierung von Gold

keywords: Anorganik Experiment Gold

uk: Математика, природничі науки

description: In dieser Folge zeigt Julian Hegemann verschiedene Reaktionen um elementares Gold aufzulösen und stellt geschichtliche Zusammenhänge mit diesen Methoden dar.

uk: вхід без авторизації


keywords: Organik Experiment Vortrag

uk: Математика, природничі науки

description: Prof. Reichardt gibt Einblicke in die Polarität von Lösungsmitteln und demonstriert in einem Experiment das Phänomen Solvatochromie.

uk: вхід без авторизації


Anwendungen von Solvatochromie

uk: Математика, природничі науки

description: Prof. Reichardt gibt Auskunft darüber, in welchen Bereichen Solvatochromie nützlich eingesetzt werden kann.

uk: вхід без авторизації


Beispiele für Green Chemistry

keywords: Anorganik Vortrag

uk: Математика, природничі науки

description: Prof. Sundermeyer gibt Aufschluss über Beispiele für Green Chemistry. Nähere Informationen geben die folgenden drei Videos.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Prof. Sundermeyer erklärt, wie Energiespeicherung mit Ionischen Flüssigkeiten verbessert werden kann.

uk: вхід без авторизації


Katalytische Ionische Flüssigkeiten

uk: Математика, природничі науки

description: Prof. Sundermeyer beschreibt weitere Anwendungen für Ionische Flüssigkeiten.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Prof. Sundermeyer erklärt, wie man mit Ionischen Flüssigkeiten in synthetischen Anwendungen Green Chemistry betreiben kann.

uk: вхід без авторизації

name: Kupferhaltige Ionische Flüssigkeiten und Vitamin E-Synthese


Die Struktur der Schichtsilicate

keywords: Anorganik Festkörperchemie Vortrag

uk: Математика, природничі науки

description: Prof. Breu (Uni Bayreuth) gibt eine Übersicht über die Struktur der Schichtsilicate.

uk: вхід без авторизації


The History of Main Group Chemistry

uk: Математика, природничі науки

description: Prof. Jones (Monash University, Australia) gives a short historical overview over the developments in main group chemistry.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Prof. Meggers talks about the traditional approach for synthesizing an organic compound for the use as an enzyme inhibitor and the inherent problems.

uk: вхід без авторизації

name: The Traditional Approach to the Synthesis of Enzyme Inhibitors


keywords:
Vortrag
Physikalische Chemie

uk: Математика, природничі науки

description: Welche Vor- und Nachteile hat die Farbstoffsolarzelle gegenüber den herkömmlichen Siliciumzellen? Prof. Grätzel (ETH Lausanne) beleuchtet einige Aspekte und gibt Prognosen für die Zukunft der Energiepolitik ab.

uk: вхід без авторизації

name: Vergleich zwischen Farbstoff- und Siliciumsolarzellen


uk: Математика, природничі науки

description: Prof. Trauner (LMU München) stellt verschiedene Arten von Photoschaltern vor und erklärt, welche Unterschiede zwischen ihnen existieren.

uk: вхід без авторизації

name: Vergleich von synthetischen und natürlichen Photoschaltern


Die Struktur von Viren

keywords: Vortrag Biochemie Anorganik

uk: Математика, природничі науки

description: Wolfgang Hornfeck berichtet über die Strukturbeschreibungen von Viren.

uk: вхід без авторизації


Untersuchung von Whisky

keywords: Vortrag Anorganik

uk: Математика, природничі науки

description: Prof. Feldmann (University of Aberdeen) erzählt, was die Untersuchung von schottischen Whisky-Sorten ergeben hat und wie sie darauf gekommen sind, dies zu tun.

uk: вхід без авторизації


Zinksulfid

keywords: Anorganik Experiment Festkörperchemie

uk: Математика, природничі науки

description: Julian und Andreas lassen Zink und Schwefel reagieren und untersuchen, was dabei heraus kommt.

uk: вхід без авторизації


Die Geschichte der Zintl-Phasen

uk: Математика, природничі науки

description: Prof. Dehnen erklärt die Forschungsgeschichte der Zintl-Phasen.

uk: вхід без авторизації


Alltägliche Strahlenbelastung

keywords: Experiment Kernchemie Vortrag

uk: Математика, природничі науки

description: Prof. Jungclas zeigt, wie man die tatsächliche Belastung durch Radioaktivität bestimmen und einordnen kann.

uk: вхід без авторизації


Aluminiumiodid

keywords: Anorganik Experiment

uk: Математика, природничі науки

description: Julian Hegemann demonstriert, wie Aluminiumpulver, Iod und Wasser auf spektakuläre Weise miteinander reagieren.

uk: вхід без авторизації


Arsen I: Arsen in der Gerichtschemie

keywords: Anorganik Experiment Arsen

uk: Математика, природничі науки

description: Julian Hegemann erzählt die Geschichte der Marsh'schen Probe und präsentiert diese.

uk: вхід без авторизації


keywords: Anorganik Experiment Arsen Vortrag

uk: Математика, природничі науки

description: Was haben diese drei Männer gemeinsam? Prof. Dehnen und Julian Hegemann erzählen es.

uk: вхід без авторизації

name: Arsen II: Bettendorf, Gutzeit und Napoleon


keywords:
Physikalische Chemie
Vortrag

uk: Математика, природничі науки

description: An Modellen erklären Martin Imhof und Prof. Hampp, wie das Membranprotein Bacteriorhodopsin für neuartige Sicherheitssysteme eingesetzt werden kann.

uk: вхід без авторизації


Berylliumchlorid

keywords: Anorganik Experiment Beryllium Festkörperchemie

uk: Математика, природничі науки

description: Prof. Dehnicke stellt unter Feuererscheinungen Berylliumchlorid her.

uk: вхід без авторизації


Biomineralisation

uk: Математика, природничі науки

description: Prof. Rüdiger Kniep (MPI, Dresden) führt in das spannende Gebiet der Biomineralisation ein.

uk: вхід без авторизації


Borsäuremethylester

uk: Математика, природничі науки

description: Julian Hegemann demonstriert die Flammenfärbung durch Borsäuremethylester:

uk: вхід без авторизації


Bottle Rocket Science

keywords: Anorganik Experiment Silvester

uk: Математика, природничі науки

description: Was macht die Farbe der Raketen aus? Julian Hegemann demonstriert es.

uk: вхід без авторизації


Bunte Gummibärchenhölle

uk: Математика, природничі науки

description: Die Chymiatrie feiert Silvester mit vielen, bunt leuchtenden Gummibärchen und wünscht allen Zuschauern einen guten Start ins neue Jahr 2011.

uk: вхід без авторизації


Chemische Abwehr von Blattkäfern

keywords: Organik Biochemie Vortrag

uk: Математика, природничі науки

description: Prof. Boland (MPI, Jena) zeigt uns, wie sich der Blattkäfer verteidigt, welche chemischen Reaktionen dabei eine Rolle spielen und wieso die organische Chemie evolutionäre Anpassungseffekte aufklären kann.

uk: вхід без авторизації


keywords: Organik Vortrag

uk: Математика, природничі науки

description: Prof. Meggers talks about an approach to synthesize asymmetric coordination compounds utilizing chiral auxiliaries.

uk: вхід без авторизації

name: Chiral Auxiliary Mediated Asymmetric Coordination Chemistry


uk: Математика, природничі науки

description: Prof. Schatzschneider (Uni Würzburg) berichtet über CORMs, ihre Eigenschaften und wo sie medizinisch angewendet werden könnten.

uk: вхід без авторизації

name: CORMs und ihre möglichen Anwendungen in der Medizin


Das Prinzip der isopiestischen Synthese

keywords: Anorganik Experiment Festkörperchemie Vortrag

uk: Математика, природничі науки

description: Andreas Authmann führt eine spannende Methode zur Simultansynthese aus der Festkörperchemie vor und erläutert die Vor- und Nachteile sowie die Theorie dahinter.

uk: вхід без авторизації


uk: Математика, природничі науки

description: Prof. Germano erklärt uns, wie auf der Flug des Albatros auf einer Konferenz mittels fraktionaler Diffusion erklärt wurde und warum es keinen Nobelpreis für Mathematik gibt.

uk: вхід без авторизації

name: Der Flug des Albatros und fraktionale Diffusion


Die Arsen-Belastung von Reis

keywords: Vortrag Anorganik Arsen

uk: Математика, природничі науки

description: Prof. Feldmann (University of Aberdeen) erläutert Details zur Arsenbelastung von Reis in Südostasien und welche internationalen Konsequenzen daraus resultieren.

uk: вхід без авторизації


Die Arsenesser aus der Steiermark

keywords: Anorganik Vortrag Arsen

uk: Математика, природничі науки

description: Prof. Feldmann (University of Aberdeen) erzählt, was es mit den Geschichten über Arsenesser auf sich hat.

uk: вхід без авторизації


Die Chemie der Blattkäfers

keywords: Organik Vortrag Biochemie

uk: Математика, природничі науки

description: Prof. Boland (MPI, Jena) erläutert, auf welche Art und Weise man die spezialisierte Chemie des Blattkäfers untersuchen kann.

uk: вхід без авторизації


keywords: Biochemie Experiment

uk: Математика, природничі науки

description: Julian Hegemann setzt einen Apfelwein an und erklärt, wie der aerobe Stoffwechsel funktioniert.

uk: вхід без авторизації

name: Die Chemie des Weines I: Herstellung des Weines und aerober Stoffwechsel