The provision of choice is one of the most common vehicles through which managers empower employees in organizations. Although past psychological and organizational research persuasively suggests that choice confers personal agency, and is thus intrinsically motivating, emerging research indicates that there could be potential pitfalls. In this chapter, we examine the various factors that could...

PURPOSE In an attempt to explain the existing discrepancies regarding the relationship between electrophysiological and psychophysical measurements of visual transmission time we compared, in humans, the response characteristics of the normal retino-cortical pathways with simultaneously obtained pattern visual evoked potentials (PVEP) and simple motor reaction times (RT). METHODS PVEPs and ma...

Copyright © 2001 American Heart Association. All rights reserved. Print ISSN: 0009-7322. Online ISSN: Circulation is published by the American Heart Association. 7272 Greenville Avenue, Dallas, TX 72514 DOI: 10.1161/hc2901.091397 2001;104;486-490 Circulation Bruce B. Lerman, Erica D. Engelstein and Daniel Burkhoff Load-Dependent Shortening of Ventricular Action Potential and Refractoriness Mech...

We present a rigorous and general method to extract the local density of states r i(v) of a system from its time response to a specified external perturbation. This method is order-N when the matrix is sparse. In a single run it gives r i(v),r i(2v), . . . ,r i(nv), . . . concurrently, which enhances the total efficiency by two decades. Application to a lattice-dynamics problem of 4096 SiC part...

The molecular ion H(3)(+) is the simplest polyatomic and poly-electronic molecular system, and its spectrum constitutes an important benchmark for which precise answers can be obtained ab initio from the equations of quantum mechanics. Significant progress in the computation of the ro-vibrational spectrum of H(3)(+) is discussed. A new, global potential energy surface (PES) based on ab initio p...

Land subsidence due to groundwater withdrawal combined with a global sea level rise creates a serious environmental problem in the coastal region. Groundwater withdrawal results in fluid pressure change in the layers. The pressure change in the layers induces both elastic and inelastic land compaction. The elastic compaction can be recovered if the water level rises again and inelastic compacti...

objective(s): the enzymatic activity of fungi has recently inspired the scientists with re-explore the fungi as potential biofactories rather than the causing agents of humans and plants infections. in very recent years, fungi are considered as worthy, applicable and available candidates for synthesis of smaller gold, silver and other nano-sized particles.  materials and methods: a standard str...