Category: Allgemein
System Theory and an Introduction to Complexity
This article gives an introduction to some important aspects of system theory and system analysis. We present some frameworks and toolsets used for system analysis and summarize some key points of these tools. The article aims to show some of the complexity behind system analysis and why there often is no simple solution. It then…
Stromnetze
Strom wird für fast alles benötigt. Von Computern und Servern, welche ausfallsicher laufen sollen um den Nutzern zuverlässig ihren Service bieten zu können, bis hin zu Wasserpumpen und Medizinischen Geräten, die die Grundversorgung bereitstellen und das Überleben sichern – ein Ausfall dieser Infrastruktur ist daher sehr ungünstig. In diesem Beitrag geht es um mehrere Aspekte…
Fake news with reference to information warfare
Through networking and the Internet, more and more people can share their opinions and spread news. This has positive and negative consequences. On the one hand, it is much easier to get the news you want and to publish it. On the other hand it is relatively easy to influence other users. An insight into…
Corona Warning App
In 2020 many things are different. People work and study from home, wear face masks and are facing restrictions in their fundamental rights. These measures and restrictions were taken to bring the global pandemic under control. More than 800.000 people have died as a result of Covid-19 (SARS-CoV-2) (25.08.2020). “Let’s build an app for it”…
The Dark Side of AI – Part 2: Adversarial Attacks
Find out how AI may become an attack vector! Could an attacker use your models against your? Also, what’s the worst that could happen? Welcome to the domain of adversarial AI!
The Dark Side of AI – Part 1: Cyberattacks and Deepfakes
Introduction Who hasn’t seen a cinema production in which an AI-based robot threatens individual people or the entire human race? It is in the stars when or if such a technology can really be developed. With this series of blog entries we want to point out that AI does not need robots to cause damage.…
E-Health in Deutschland: Die neue Elektronische Patientenakte
Anfang 2021 soll die elektronische Patientenakte (ePA) starten. Damit wird es möglich sein, alle Gesundheitsdaten (Befunde, Diagnosen, Behandlungsmaßnahmen, Arztbriefe, etc.) zentral zu speichern. Patienten bekommen so einen zentralen Überblick über all ihre bei verschiedenen Ärzten erfassten Daten, und sind in der Lage, diese Informationen mit bestimmten Ärzten zu teilen. So wird der Datenaustausch zwischen Ärzten,…
Open Source Batch and Stream Processing: Realtime Analysis of Big Data
Abstract Since the beginning of Big Data, batch processing was the most popular choice for processing large amounts of generated data. These existing processing technologies are not suitable to process the large amount of data we face today. Research works developed a variety of technologies that focus on stream processing. Stream processing technologies bring significant…
Distributed stream processing frameworks – what they are and how they perform
An overview on stream processing, common frameworks as well as some insights on performance based on benchmarking data
Isolation and Consistency in Databases
by Samuel Hack and Sebastian Wachter. Most people assume that the data coming from a database is correct. For most applications this is true, but when the databases are used in systems where the database is at its limit, this is no longer always the case. What happens if during a query of a value…