Despite widespread interest in quality signals, a broad understanding of quality that incorporates information about signals used in a variety of contexts remains elusive. For example, relatively little is known about arbitrary signals of quality used during aggressive competition (badges of status). Recently, a new badge of status was found: black facial patterns in Polistes dominulus wasps. P...

Numerous industry studies document the serious productivity cost incurred by knowledge-reliant organisations when employees are unable to locate the information resources they need to do their jobs, or take too long to do so. The traditional approach to avoiding this problem has been to impose an organisation-specific taxonomy and to tag documents with subject metadata describing and classifyin...

Traits of interest to evolutionary biologists often have complex genetic architectures, the nature of which can confound traditional experimental study at single levels of analysis. In the fire ant Solenopsis invicta, the presence of a Mendelian 'supergene' is both necessary and sufficient to induce a shift in a fundamental property of social organization, from single-queen (monogyne) to multip...

Physicians engaged in management of burn patients in India need to keep themselves abreast with the legal requirements. Clinical burn management and liaison with local authorities go almost parallel. Concept of the legal rights of Burn Survivor and the family are emerging now in India. Demarcation between physical impairment status and disability to sustain are discussed. Burn Physicians can he...

The arrival of spring means yet another round in the national debate over executive compensation. But the critics have it wrong. The relentless attention on how much CEOs are paid diverts public attention from the real problem-how CEOs are paid. The authors present an in-depth statistical analysis of executive compensation. The study incorporates data on thousands of CEOs spanning five decades....

We describe a reflection scheme that allows Bragg-spaced semiconductor quantum wells to be used to trap, store, and release light. We study the temporal and spectral distortion of delayed light pulses and show that this geometry allows multibit delays and offers a high degree of distortion compensation.

In this paper, we analyze the dynamic behavior of employment and hours worked per worker in a stochastic general equilibrium model with a matching mechanism between vacancies and unemployed workers. The model is estimated for the US using the Generalized Methods of Moments (GMM) estimation technique. An increase in government spending raises hours worked per worker, and crowds out private consu...

author reports a case of 67- years- old men referred to donga university hospital silicosis who had worked in tunnel drilling where presumably had been exposed to high concentration free silica for almost 20 yr. this report is considered the first in korea to the best of our knowledge since no cases on silicosis could be reported in this occupation in reviewing various literature sources in kor...