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- Fakultät Medien und Informationswesen (M+I) (bis 21.04.2021) (63) (remove)
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Covert channels have been known for a long time because of their versatile forms of appearance. For nearly every technical improvement or change in technology, such channels have been (re-)created or known methods have been adapted. For example, the introduction of hyperthreading technology has introduced new possibilities for covert communication between malicious processes because they can now share the arithmetic logical unit as well as the L1 and L2 caches, which enable establishing multiple covert channels. Even virtualization, which is known for its isolation of multiple machines, is prone to covert- and side-channel attacks because of the sharing of resources. Therefore, it is not surprising that cloud computing is not immune to this kind of attacks. Moreover, cloud computing with multiple, possibly competing users or customers using the same shared resources may elevate the risk of illegitimate communication. In such a setting, the “air gap” between physical servers and networks disappears, and only the means of isolation and virtual separation serve as a barrier between adversary and victim. In the work at hand, we will provide a survey on vulnerable spots that an adversary could exploit trying to exfiltrate private data from target virtual machines through covert channels in a cloud environment. We will evaluate the feasibility of example attacks and point out proposed mitigation solutions in case they exist.
All business is local
(2016)
Journalist
(2016)
The International Year of Light and Light-Based Technologies 2015 (IYL 2015) was celebrated around the world. Worldwide activities were organized to highlight the impact of optics and photonics on life, science, economics, arts and culture, and also in education. With most of our activities at Offenburg University of Applied Sciences (Offenburg/Germany), we reached our own students and the general population of our region: - University for Children: “The Magic of Light“ winter lecture program and “Across the Universe with Relativity and Quantum Theory” summer lecture program - “Students Meet Scientists” - “A Century of General Relativity Theory” lecture program Nevertheless, with some of our activities we also engaged a worldwide audience: - IYL 2015 art poster collection (Magic of Light and No Football, Just Photonics) - Smart Interactive Projection - Twitter Wall - “Invisible Light” - Live broadcasting of the total lunar eclipse - Film Festival Merida Mexico The authors will highlight recent activities at our university dedicated to promote, celebrate, and create a legacy for the IYL 2015.
Widerrufsrechte beim Anwalt?
(2016)
Bildnisverwertungsklauseln
(2016)
Kommentierung der §§ 1-4
(2016)
Softwareverträge
(2016)
Kundendaten besitzen einen erheblichen Wirtschaftswert. Dies gilt nicht nur, aber insbesondere auch wegen der Möglichkeit zur persönlichen Werbeansprache. Aus diesem Grunde versuchen Unternehmen gerade dann, wenn sie ihren Betrieb einstellen, zuweilen alle werthaltigen Wirtschaftsgüter (Assets) zu Geld zu machen. In manchen Fällen geschieht dies auch kurz vor der Insolvenz, wenn der Betriebsinhaber einerseits ein Unternehmen pleite gehen lässt, andererseits aber ein neues, praktisch identisches Geschäftsmodell unter anderer rechtlicher Identität neu aufsetzt. Von besonderer Bedeutung kann dann die Entscheidung des BayLDA werden, die in einem derartig gelagerten Fall ein empfindliches Bußgeld verhängte. Der folgende Beitrag setzt sich mit der Entscheidung näher auseinander.
Partizipatives Parasitieren
(2016)
With our society moving towards Industry 4.0, an increasing number of tasks and procedures in manual workplaces are augmented with a digital component. While the research area of Internet-of-Things focuses on combining physical objects with their digital counterpart, the question arises how the interface to human workers should be designed in such Industry 4.0 environments. The project motionEAP focuses on using Augmented Reality for creating an interface between workers and digital products in interactive workplace scenarios. In this paper, we summarize the work that has been done in the motionEAP project over the run-time of 4 years. Further, we provide guidelines for creating interactive workplaces using Augmented Reality, based on the experience we gained.
Gamification implies the application of methods and design patterns from gaming to non-gaming areas like learning or working. We applied an existing gamification design to production processes in an organization which provides sheltered employment for impaired persons. In contrast to existing work, we investigated not only a short period but a complete workday to measure the effects on the work performance. The study indicates that gamification has (1) a negative effect on workers with considerable cognitive impairments, (2) no significant effect on workers with medium cognitive impairments and (3) a positive effect on workers with mild cognitive impairments.
In this work, we investigate how gamification can be integrated into work processes in the automotive industry. The contribution contains five parts: (1) An introduction showing how gamification has become increasingly common, especially in education, health and the service industry. (2) An analysis on the state of the art of gamified applications, discussing several best practices. (3) An analysis of the special requirements for gamification in production, regarding both external norms and the mindset of workers in this domain. (4) An overview of first approaches towards a gamification of production, focusing on solutions for impaired workers in sheltered work organizations. (5) A study with a focus group of instructors at two large car manufacturers. Based on the presentation of three potential designs for the gamification of production, the study investigates the general acceptance of gamification in modern production and determines which design is best suited for future implementations.
The number of impaired persons rises -- as a result of both regular degradation with age and psychological problems like burnout. Sheltered work organizations aim to reintegrate impaired persons into work environments and prepare them for the re-entry in the regular job market.
Both for elderly and for impaired persons it is crucial to quickly assess the abilities, to identify limits and potentials and thus find work processes suitable for their skill profile.
This work focuses on the analysis and comparison of software-tools that assess the abilities of persons with impairments. We describe two established generic tools (CANTAB, Cogstate), analyze a yet unknown specialized tool (Hamet) and present a new gamified tool (GATRAS).
Finally, we present a study with 20 participants with impairments, comparing the tools against a ground truth baseline generated by a real-world assembly task.
Die Verdinglichung des Menschen: Mit Gesundheitskarte, Selftracking und E-Health zum homo digitalis
(2016)
Der Kaiser ist ja nackt
(2016)
In the age data digitalization, important applications of optics and photonics based sensors and technology lie in the field of biometrics and image processing. Protecting user data in a safe and secure way is an essential task in this area. However, traditional cryptographic protocols rely heavily on computer aided computation. Secure protocols which rely only on human interactions are usually simpler to understand. In many scenarios development of such protocols are also important for ease of implementation and deployment. Visual cryptography (VC) is an encryption technique on images (or text) in which decryption is done by human visual system. In this technique, an image is encrypted into number of pieces (known as shares). When the printed shares are physically superimposed together, the image can be decrypted with human vision. Modern digital watermarking technologies can be combined with VC for image copyright protection where the shares can be watermarks (small identification) embedded in the image. Similarly, VC can be used for improving security of biometric authentication. This paper presents about design and implementation of a practical laboratory experiment based on the concept of VC for a course in media engineering. Specifically, our contribution deals with integration of VC in different schemes for applications like digital watermarking and biometric authentication in the field of optics and photonics. We describe theoretical concepts and propose our infrastructure for the experiment. Finally, we will evaluate the learning outcome of the experiment, performed by the students. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Drehzahlzustandsregelung
(2016)
Aufgrund der zunehmenden Bedeutung von E-Prüfungen an Hochschulen und Universitäten werden Lösungen benötigt, die eine einfache, schnelle und sichere Nutzung von bestehenden Poolräumen für verschiedene Prüfungsszenarien ermöglichen. Das Projekt bwLehrpool hat in der Vergangenheit gezeigt, dass mit Hilfe von Virtualisierung eine große Anzahl an unterschiedlichen, individualisierten Lehrumgebungen flexibel und räumlich unabhängig verteilt werden kann. Im nächsten Schritt sollen nun Erweiterungen entwickelt werden, die diese Flexibilität auch für elektronische Prüfungen nutzbar macht. Dabei gilt es vor allem, die Vorteile, wie z.B. die Nutzung von Softwareunterstützung für realitätsnahe Aufgabenstellungen, mit der Notwendigkeit nach größtmöglicher Sicherheit und schneller Umrüstzeit der Infrastruktur in Einklang zu bringen. Um den aktuellen Entwicklungsstand zu testen, wurde im Wintersemester 2015/2016 an der Hochschule Offenburg eine E-Prüfung unter bwLehrpool durch über 140 Studierende durchgeführt. Die Ergebnisse zeigen, dass die Anforderungen bisher erfolgreich umgesetzt werden konnten, allerdings noch mehr manueller Aufwand nötig ist, als gewünscht. Der Ablauf soll in Zukunft weiter vereinfacht und verstetigt werden.
Dos and Don’ts im Dashboard-Design: Wie Eyetracking-Verfahren bei der Datenvisualisierung helfen
(2016)
Vom Studenten zum Chef
(2016)
The Paper presents the design and development of a blended learning concept for an engineering course in the field of color representation and display technologies. A suitable learning environment is crucial for the success of the teaching scenario. A mixture of theoretical lectures and hands-on activities with practical applications and experiments, combined with the advantages of modern digital media is the main topic of the paper. Blended learning describes the didactical change of attendance periods and online periods. The e-learning environment for the online period is designed toward an easy access and interaction. Present digital media extends the established teaching scenarios and enables the presentation of videos, animations and augmented reality (AR). Visualizations are effective tools to impart learning contents with lasting effect. The preparation and evaluation of the theoretical lectures and the hands-on activities are stimulated and affects positively the attendance periods. The tasks and experiments require the students to work independently and to develop individual solution strategies. This engages and motivates the students, deepens the knowledge. The authors will present their experience with the implemented blended learning scenario in this field of optics and photonics. All aspects of the learning environment will be introduced.
MonteVideo Soundscapes
(2016)
UNIKOPS : Universell konfigurierbare Sicherheitslösung für Cyber-Physikalische heterogene Systeme
(2016)
Ziel von UNIKOPS (Universell konfigurierbare Sicherheitslösung für Cyberphysikalische heterogene Systeme) ist es, hochflexible Software- und teilweise auch Hardwarelösungen mit sehr hohem Sicherheitsniveau zu entwickeln, die in einer Vielzahl von CPS-Anwendungsfeldern, insbesondere mit Sensorknoten, einsetzbar sind.
Practical exercises are a crucial part of many curricula. Even simple exercises can improve the understanding of the underlying subject. Most experimental setups require special hardware. To carry out e. g. a lens experiments the students need access to an optical bench, various lenses, light sources, apertures and a screen. In our previous publication we demonstrated the use of augmented reality visualization techniques in order to let the students prepare with a simulated experimental setup. Within the context of our intended blended learning concept we want to utilize augmented or virtual reality techniques for stationary laboratory exercises. Unlike applications running on mobile devices, stationary setups can be extended more easily with additional interfaces and thus allow for more complex interactions and simulations in virtual reality (VR) and augmented reality (AR). The most significant difference is the possibility to allow interactions beyond touching a screen. The LEAP Motion controller is a small inexpensive device that allows for the tracking of the user’s hands and fingers in three dimensions. It is conceivable to allow the user to interact with the simulation’s virtual elements by the user’s very hand position, movement and gesture. In this paper we evaluate possible applications of the LEAP Motion controller for simulated experiments in augmented and virtual reality. We pay particular attention to the devices strengths and weaknesses and want to point out useful and less useful application scenarios. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Remote code attestation protocols are an essential building block to offer a reasonable system security for wireless embedded devices. In the work at hand we investigate in detail the trustability of a purely software-based remote code attestation based inference mechanism over the wireless when e.g. running the prominent protocol derivate SoftWare-based ATTestation for Embedded Devices (SWATT). Besides the disclosure of pitfalls of such a protocol class we also point out good parameter choices which allow at least a meaningful plausibility check with a balanced false positive and false negative ratio.
Predictive Analytics als Governance- und Managementanwendung - Zukunftsorientiertes Controlling
(2016)
Klang Orte(n) Zeit Raum.
(2016)