University of Wisconsin–Milwaukee

About: University of Wisconsin–Milwaukee is a education organization based out in Milwaukee, Wisconsin, United States. It is known for research contribution in the topics: Population & Gravitational wave. The organization has 11839 authors who have published 28034 publications receiving 936438 citations. The organization is also known as: UWM & University of Wisconsin-Milwaukee.

Organizational Causes and Strategic Consequences of the Extent of Top Management Team Replacement During Turnaround Attempts

Abstract: Researchers have argued that top management team changes are an important force spurring change at declining firms. Yet, studies find that top executives at some firms are able to avoid being replaced even though their firms perform poorly. Also, despite support from numerous case analyses, there is little systematic evidence that replacing top managers leads to substantial organizational change at declining firms. In this study, we examine these issues by looking at levels of top management team replacement at a sample of declining firms attempting turnarounds. We find that top management team replacement levels vary with the presence of inertial or change-creating forces within firms. In particular, reduced levels of top management team replacement occur during turnaround attempts at large firms and those that have followed the same strategic orientation for a long period of time. Meanwhile, increases in outsider control of the board are associated with increased levels of replacement. We further find that higher levels of top management team replacement are associated with greater changes in firm competitive strategy and firm structure and controls during turnaround attempts. Overall, our findings show that organizational-level forces play an important role in top management and strategic change processes at declining firms.

Quantized matter fields and the avoidance of singularities in general relativity

Abstract: We consider a classical gravitational field minimally coupled to a quantized neutral scalar field possessing mass. We are especially concerned with the effects of particle creation and quantum coherence on the premises and conclusions of the singularity theorems, which imply the inevitability of singularities in classical general relativity. A closed Robertson-Walker geometry is used throughout. Nongravitational interactions are not considered. The source of the gravitational field in the Einstein equations is the expectation value of the energy-momentum tensor of the quantized scalar field. Lacking a general prescription for obtaining a finite operator from the divergent formal expression for the energy-momentum tensor, we confine our attention to situations in which plausible special methods are available. We show that quantum coherence effects in this semiclassical model can result in a violation of the energy conditions which enter into the singularity theorems. Then we exhibit numerical solutions of the coupled Einstein and scalar field equations in which a Friedmann-like collapse is stopped and converted to a Friedmann-like expansion. (In this calculation one mode of the quantum field was assumed dominant.) We conclude that quantum effects of the type considered here can sometimes lead to avoidance of the cosmological singularity, at least on the time scale of one Friedmann expansion.

Metal Nitride/Graphene Nanohybrids: General Synthesis and Multifunctional Titanium Nitride/Graphene Electrocatalyst

Abstract: A facile, efficient, and general strategy is developed for the fabrication of a new class of nanohybrids consisting of nitrogen-doped graphene functionalized with metal nitride nanoparticles. The graphene decorated with titanium nitride nanoparticles is explored for multifunctional electrocatalytic applications, i.e., as a low-cost counter electrode for I(3)(-) reduction in dye-sensitized solar cells and for nicotinamide adenine dinucleotide (NADH) oxidation in dehydrogenase enzyme-based biosensors.

Who Isn’t Using Patient Portals And Why? Evidence And Implications From A National Sample Of US Adults

Abstract: Patient portals that provide secure online access to medical record information and provider communication can improve health care. Yet new technologies can exacerbate existing disparities. We analyzed information about 2,325 insured respondents to the nationally representative 2017 Health Information National Trends Survey to examine characteristics of portal nonusers and reasons for nonuse. Sixty-three percent reported not using a portal during the prior year. In multivariable analysis, we found that nonusers were more likely to be male, be on Medicaid, lack a regular provider, and have less than a college education, compared to users. Similar disparities existed in who reported being offered access to a portal, with nonwhites also less likely to report being offered access. Reasons for nonuse included the desire to speak directly to providers and privacy concerns, both of which require recognition of the important role of provider communication and patient-provider relationships.