17,922 Works

Extending Python for Speed

Martin Renold
Python is a nice high-level language, but most graphic applications have some code that must run fast at any price. Everyone knows that it is possible to write C/C++ extensions for Python. Not everyone knows that it can be done cleanly, simply and DRY.

Using python, LXC and linux to create a mass VM hosting, managed by django and angularjs

Daniel Kraft & Oliver Roch
Daniel Kraft/Oliver Roch - Using python, LXC and linux to create a mass VM hosting, managed by django and angularjs How we created a scalable mass VM hosting for open source web apps with python, LXC and linux with a web-UI based on django and angularjs. We'll show the underlying architecture of this service, several linux internals that make this possible and we'll talk about bitter failure during development. This talk will be python- and...

Beweistechniken

Robert Haller-Dintelmann

IaaS als Motor der Digitalisierung - IT Self-Service und Automatisierung auf Basis von Open-Source Technologien

Matt Rechenburg
Der derzeitige Trend zur Digitalisierung von vielen Arbeitsbereichen unseres täglichen Lebens wird grundlegende Veränderungen in nahezu allen Berufen bewirken. Diese Veränderungen, die ähnliche Auswirkungen haben wird wie damals die industrielle Revolution, betrifft auch den Job des Systemadministrators und die Art der Provisionierung und Verwaltung von Serversystemen und IT Diensten. Erfolgreiche Digitalisierung benötigt eine ganzheitliche, holistische Sicht der IT Administration und lässt sich nur mit einer Automatisierung aller Einzelschritte bewerkstelligen. Open Source Technologien wie KVM, Ceph...

Addition of Water, Alcohol & Cyanide

Susan King
This is the third (and final) quarter of the organic chemistry series. Topics covered include: Fundamental concepts relating to carbon compounds with emphasis on structural theory and the nature of chemical bonding, stereochemistry, reaction mechanisms, and spectroscopic, physical, and chemical properties of the principal classes of carbon compounds. Index of Topics: 00:25 - Addition of Alcohols 04:35 - Important Points about Acetal and Hemiacetal Formation 17:26 - Cyclic Acetals are formed more readily than Acyclic...

HelenOS in the year of the fire monkey

Martin Děcký
HelenOS is a portable microkernel-based multiserver operating system designedand implemented from scratch. It decomposes key operating system functionalitysuch as file systems, networking, device drivers and graphical user interfaceinto a collection of fine-grained user space components that interact witheach other via message passing. HelenOS does not aim to be a clone of anyexisting operating system and trades compatibility with legacy APIs forcleaner design. Most of HelenOS components have been made to orderspecifically for HelenOS so that...

New Revolutions in Particle Physics: Basic Concepts | Lecture 7

Leonard Susskind
(November 13, 2009) Leonard Susskind discusses the theory and mathematics of angular momentum.

Mapillary - Alltag

Lars Schimmer
Das Ökosystem Mapillary wurde auf der Fossgis 2014 in einem Lightning Talk schon vorgestellt. Ich werde aus Usersicht meine Erfahrungen aus 18 Monaten Aktivität mit Mapillary berichten, dieses umfasst über 160.000 eingereichte Fotos, diverse genutzte Mobilgeräte, viele besuchte Orte und mehrere Methoden der Datenbearbeitung. Natürlich werden auch die Pitfalls und Probleme angesprochen, über die man zwangsweise stolpert

Arduino: from prototype to final product

Fellipe Rollin
Arduino is a development platform useful not only for amateur/hobbyist projects, but also for prototyping commercial solutions. Its modularity make easy the process of creating and evaluating concepts in a short space of time and with reduced costs. In this talk we are going to illustrate a development flow divided into three steps: the modular design, the prototype and the final product. The modular design intends to validate the main features of the product being...

Lecture 08. Molecular Motion.

Rachel Martin
UCI Chem 131B Molecular Structure & Statistical Mechanics (Winter 2013) Lec 08. Molecular Structure & Statistical Mechanics -- Molecular Motion. Instructor: Rachel Martin, Ph.D. Description: Principles of quantum mechanics with application to the elements of atomic structure and energy levels, diatomic molecular spectroscopy and structure determination, and chemical bonding in simple molecules. Slides: 0:00:08 Molecular Motion 0:26:37 Methane Bonding

Journal as a Storage and Other Adventures in User Session Recording

Nikolai Kondrashov
See how Red Hat's Session Recording project is using Systemd Journal to store and playback recordings of terminal sessions. Wonder at the challenges the project faces, such as dealing with various terminal types, character encodings, random playback positioning, etc.

Neues vom QGIS Server und -Webclient

Marco Hugentobler
Letztes Jahr haben wir an der FOSSGIS Konferenz gezeigt, wie man problemlos Webkarten mit dem QGIS Server und -Webclient publiziert. Seither sind noch mehr Funktionen dazugekommen, die über den WMS Standard hinausgehen. Häufige Funktionen bei Webkarten sind Objektsuche nach Attributen sowie das Highlighten der Resultate. Bisher kommt man nicht umhin, dafür neben dem eigentlichen WMS noch weitere Serverkomponenten zu installieren und zu konfigurieren. Während dem letzten Jahr wurden daher in QGIS Server Erweiterungen entwickelt, die...

XML Schema moves forward

Michael Kay
The XML Schema (XSD) specification from W3C is a paradox: it is one of the most heavily criticised specifications to come out of the organisation, but at the same time it has been widely adopted and implemented, and it can be said to have met all its design objectives. For some time the responsible working group has been developing a new version, XSD 1.1, which is starting to get close to the finish line. Many...

Cooking with AWS - July 12, 2016

Josh Campbell
Looking for some ways to spice up your Chef usage on AWS? In this session we'll show you how to leverage services like AWS Lambda, AWS Key Management Service (KMS), Amazon CloudWatch Events, and Amazon EC2 Run Command with Chef. We'll introduce the AWS services and demo how they can be used to better manage your Chef nodes. Gannett, a leading media company and publisher of USA Today, will also join us to talk about...

Lecture 24: Aromatic Substitution with Carbocation as Electrophiles

Susan King
UCI Chem 51B: Organic Chemistry (Winter 2015) Instructor: Susan King, Ph.D. This is the second quarter of the organic chemistry series. Topics covered include: Fundamental concepts relating to carbon compounds with emphasis on structural theory and the nature of chemical bonding, stereochemistry, reaction mechanisms, and spectroscopic, physical, and chemical properties of the principal classes of carbon compounds. Index of Topics: 00:48 - Bromination of Benzene 04:46 - Nitration of Benzene 10:46 - Sulfonation of Benzene...

17 More Probe Diffusion

George Phillies
Lecture 17 - probe diffusion, part the last. George Phillies lectures from his book "Phenomenology of Polymer Solution Dynamics".

Pushing the frontiers of Information Extraction

Katsiaryna Stalpouskaya & Christian Baden
In many disciplines in the social sciences and humanities, research is increasingly dealing with large scale text corpora that require the use of advanced NLP tools to process them and extract information. However, to date, most existing algorithms focus on the topical organization (e.g., bag-of-words based LDA) and relatively simple grammatical (e.g., subjects and objects of the discussion, adverbials of place, time, etc.) and semantic structures (e.g., sentiment) of the text, while more complex meanings...

Monochromatic waves drifting with the wind

Juan Urco
Polar mesospheric summer echoes (PMSEs) are very strong radar echoes caused by the presence of ice particles, turbulence, and free electrons in the mesosphere over polar regions. For more than three decades, PMSEs have been used as natural tracers of the complicated atmospheric dynamics of this region. Neutral winds and turbulence parameters have been obtained assuming PMSE horizontal homogeneity in scales of tens of kilometers. Recent radar imaging studies have shown that PMSEs are not...

Panel 2 - The Eurosystem's integration agenda - 31 January 2017

Marc Bayle De Jessé, Christian Westerhaus, Martin Merlin, Wim Mijs, Lieve Mostrey & Tumpel-Gugerell, Gertrude (Moderator)

Variante: VE.KW.1 pE.1 2 Rs.b.27 stat 50.2: Punktuelle Absaugungen 50.000 m³/h

Peter Thiel & Holm Klusmann

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