Ittrich’s method for the determination of total estrogens in urine (1) was adapted for automation on the AutoAnalyzer, using a continuous digester module for the combined operation of phase exchange and color development. The automated method gave good recovery and reproducibility, and correlated well with the manual method. It increased the capacity of this laboratory for estrogen determinatio...

The research analyzed the causes for turnover rate of doctors and nurses in family health strategy teams with at least two years of implementation on March 2006 in Vale do Taquari, Rio Grande do Sul State. It is a quantitative and qualitative study identifying 31 teams in 25 towns, and the turnover rate was established by year from 1999 to 2005 by professional category. There was no turnover fo...

Standard contract theory predicts that contractual terms between tenants and landlords should reflect the quantity and quality of factor inputs (labor and land), the degree of risk aversion of the parties, and various structural features of the labor market such as alternative wages, turnover rates, and search costs. We examine these theories in the light of data on the terms of contracts, as w...

This paper presents a theory — built on job search, firm specific human capital, and disreputable contracting — to provide a unified explanation for a host of widely documented findings on wage and turnover dynamics. In particular, the theory reconciles two seemingly inconsistent facts: evidence that past wage growth on a job reduces turnover; and yet, using the same data, evidence that there i...

Purpose: Knowledge about principals’ leadership roles in charter schools’ success has become more important as the number of charter schools increases and as we have learned more about the influence of principal leadership on school effectiveness. To contribute to the limited empirical literature on the principal labor market, this study explores the reasons for the disparity of turnover rates ...

Single-molecule spectroscopy can monitor transitions between two microscopic states when these transitions are associated with the emission of photons. A general formalism is developed for obtaining the statistics of such transitions from a microscopic model when the dynamics is described by master or rate equations or their continuum analog, multidimensional reaction-diffusion equations. The f...