The role of group values in the relationship between group faultlines and performance

This study explores the moderating effects of group values on the relationship between group faultlines and performance. Faultlines occur when group members align along two or more different demographic characteristics causing a group to split into homogeneous subgroups (adapted from Lau and Murnighan, 1998). We theorize and empirically examine three group values variables: career-, change-, and task-specificity. Analyses are performed on 81 work groups from a Fortune 500 information processing firm. Two levels of performance are considered in connection with group faultlines: individual performance (performance ratings) and group performance (bonuses and stock options). Our results provide support for our model of group values, faultiness and performance

Autographie von Alexandre Dumas entdeckt

Im Archivzentrum der UB Frankfurt wurde ein von Alexandre Dumas handgeschriebenes Gedicht gefunden. Dumas übersetzte die "Die nächtliche Heerschau" von Joseph Christian Freiherr von Zedlitz ins Französische und notierte sie auf eine Lithographie

Quantum Entanglement with Self-stabilizing Token Ring for Fault-tolerant Distributed Quantum Computing System

This paper shows how to construct quantum entanglement states of n qubits based on a self-stabilizing token ring algorithm. The entangled states can be applied to the fields of the quantum network, quantum Internet, distributed quantum computing, and quantum cloud. To the best of our knowledge, this is the first attempt to construct quantum entanglement based on the self-stabilizing algorithm. By the quantum circuit implementation based on the IBM Quantum Experience platform, it is demonstrated that the construction indeed can achieve specific n qubit entangled states, which in turn can be used to circulate a token in a quantum network or quantum Internet for building a distributed quantum computing system (DQCS). The built DQCS is fault-tolerant in the sense that it can tolerate transient faults such as occasional errors of entangled quantum states.Comment: 8 pages, 7 figure

Doctor of Philosophy

dissertationIn this dissertation copper germanium (CuGe)-based materials were investigated as potential ohmic contacts to n-type gallium arsenide (GaAs). The CuGe-based contacts to GaAs were found to not form any reaction products with GaAs and to have low contact resistance comparable to that of nickel gold germanium (NiAuGe) ohmic contacts to GaAs. The potential for high temperature applications using CuGe ohmic contacts was investigated. A guideline for further reduction of the contact resistance has been achieved after investigating the detailed mechanism of the formation of binary CuGe contacts over a wide range of Ge concentrations. The thermal stability of CuGe contacts was significantly enhanced and improved by introducing a diffusion barrier, titanium tungsten nitride (TiWNx), and a gold (Au) overlayer for high temperature applications. Novel approaches such as epitaxial thulium phosphide (TmP) Schottky contacts and the utilization of low temperature (LT)-aluminum gallium arsenide (AlGaAs) were also investigated in this dissertation and likely will be the standard technologies for a new generation of high-temperature electronics. Inserting a layer of aluminum arsenide (AlAs) underneath the channel of a GaAs-based MESFET was found to reduce substrate leakage currents by a factor of 30 compared with the same MESFET directly fabricated on a semi-insulating GaAs substrate. In addition to AlAs, and AlxGa1-xAs materials, new materials grown at low temperatures such as LT-AlGaAs were used in heterojunction FET structures as a back wall barrier. Low drain leakage currents were achieved using AlAs and LT-AlGaAs as the back wall barriers. Some fundamental properties regarding these materials are of great interest and in need of further characterization. Part of the work in this dissertation was devoted to the characterization of device performance for different structure designs at elevated temperatures. The suitability of GaAs-based and gallium arsenide (GaN)-based MESFET, JFET, pseudomorphic-HEMT, and modulation doped FET (MODFET) devices for high-temperature applications were investigated and addressed in terms of device performance such as transconductance, leakage current density, and current gain. Wide gap materials such as GaN have low carrier generation rate at high temperatures and, hence, high operation temperature capabilities and potential

[nestor Handbuch : eine kleine Enzyklopädie der digitalen Langzeitarchivierung ; Version 2.0 : Kap. 2.3] Bibliotheken

Für Bibliotheken gehört der Umgang mit elektronischen Ressourcen zu den größten Herausforderungen des 21. Jahrhunderts. Die Sammlung, Erschließung und dauerhafte Aufbewahrung elektronischer Ressourcen erweitert das Aufgabenfeld von Bibliotheken heutzutage enorm. Auch mit dem Aufbau von Langzeitspeichern müssen Bibliotheken sich auseinandersetzen

Ski2LRT uses Systemic Design to transform winter community in Edmonton

Edmonton is very lucky for many reasons. Light Rail Transit (LRT) and extensive green space are just two reasons. During the winter months, however, the green belts that surround our neighborhoods and run along our utility corridors become white belts. We’ve seen attempts to battle the cold and recreate warm-weather commuting: increased ped-ways, large malls, heated bus terminals, and other mechanisms. Yet the more we treat winter as something to be accommodated and worked around, the more we retreat, hibernate, and use our cars, the greater our negativity about winter. And so the question remains: How can we shift our thinking around winter and reclaim our abundant public space and corridors in a way that is inherently meaningful for Edmontonians? What if we could ski to work, or to the LRT? Systems mapping, using rich picture as a design method, helped a group of community enthusiasts understand commuting practices and available green space (white space) in the area. What we found was a vast amount of interconnected white space linked to the train line. The group used causal layered analysis to better understand the systemic causes, worldviews, and mental model underlying why these two transportation systems had never interacted before. As the group dove into an understanding of these two systems, what became clear was a common link around a broader overarching system: winter. The group framed a new mental model for how to tap into this potential. From this premise, a participatory, community based initiative, #Ski2LRT, was formed. #Ski2LRT launched as an emergent movement that attempted to shift mindsets around three concepts: Winter, cross-country skiing in urban settings and LRT usage. A simple Facebook page was designed and a cross-country ski rack was placed at the Century Park LRT station. What happened next and the unintended ripple effects went beyond the original intention. It was unknown that neighborhood ski enthusiasts felt isolated. Unintentionally, this initiative connected a community and gave like-minded individuals a space to convene. This initiative and shift impacted the identity of the city and a new municipal group called “SkiWay” formed, connecting the ski clubs in the city, alongside urban transportation initiatives, to reinvigorate cross country skiing in the city