What difference does robotic telepresence make to the management of ambiguity in distributed knowledge work? We examined this question in a post-surgical intensive care where remote medical workers struggled to coordinate their work in the face of ambiguities related to their extremely sick patients. Our in-depth field study allowed us to explore how differently ambiguity was managed when night...

Credential revocation is a critical problem in grid environments and remains unaddressed in existing grid security solutions. We present a novel grid authentication system that solves the revocation problem. It guarantees instantaneous revocation of both long-term digital identities of hosts/users and short-lived identities of user proxies. With our approach, revocation information is guarantee...

  Background: Nowadays job stress is one of the most important health problems that health and safety professionals are facing with. Much of previous studies have focused on interventions such as stress management and, they have ignored the role of psychosocial factors in occurrence of job stress. This study investigated the mediator role of supervisor support on the association between wo...

Presenteeism happens when employees are at work, but their cognitive energy is not devoted to their work. This study investigated the extent to which supervisor behavior is associated with employee presenteeism. It also investigated the efficacy of a measure of job-stress-related presenteeism. Australian employees completed a questionnaire asking how often they experience job-stress-related pre...

Supervisor(s): Prim. Priv. Doz. Dr. Robert Winker Department(s): Department of Laboratory Medicine, Medical University of Vienna Health and Prevention Center, Sanatorium Hera Thesis committee: Ao. Univ. Prof. Dr. Michael Kundi Institute of Environmental Health, Center of Public Health, Medical University of Vienna Univ. Doz. Dr. Georg Endler Labors.at Current academic degree: Mag. rer. nat., BS...

The goal of this study was to re-examine McCroskey, Valencic, and Richmond’s findings about the impact of a teacher’s temperament on her or his students by examining the findings in a different context, the supervisor-subordinate relationship in organizational settings. This study measured a supervisor’s temperament to see if it affected a subordinate’s job satisfaction, motivation, and percept...

We define an isomorphism between the group of points of a conic and the set of integers modulo a prime equipped with a non-standard product. This product can be efficiently evaluated through the use of Rédei rational functions. We then exploit the isomorphism to construct a novel RSA-like scheme. We compare our scheme with classic RSA and with RSA-like schemes based on the cubic or conic equati...

This thesis studies the design and fabrication of spiral inductors for use in Radio Frequency (RF) applications. A design methodology is developed to search an inductor design space efficiently using existing simulation software. The methodology allows designers to specify a desired inductance, total area, and frequency of operation instead of the geometrical parameters required by most design ...