A review of job embeddedness: Conceptual,measurement issues,and directions for future research

Job embeddedness (JE) theory is a relatively new perspective in turnover research. Although theoretical and empirical implications are encouraging, the construct of JE is still under development. In this paper, we identify five conceptualization and measurement issues warranting additional discussion and research. These are: (1) the composite measure vs. the global measure, (2) conceptual and measurement problems of community embeddedness, (3) conceptual and measurement problems associated with links, (4) discriminant validity issues and (5) the cultural boundaries of JE. For each issue, we discuss our concerns and suggest future research directions.     

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Ohne Zusammenfassung     

Diminishing Returns and the Limit of Athletic Performance

The purpose of this paper is to estimate athletic performance profiles over time, to establish that diminishing returns is a characteristic of performance functions, to measure the rate of the marginal decline, and to measure the upper (lower) bound or limit of performance. The empirical results yield estimates of the limiting value of athletic performance and the frontier maximum (minimum) record. Since lower bounds in the running events have been shown to be sensitive to choice of the nonlinear model, logistic and an exponential model for the men's running and distance events are estimated as a cross-check on my differential equation model. The issue of the gender gap (whether women will ever catch men) in athletic performance is also explored.     

Bank Consolidations and Minority Neighborhoods

This paper explores the relationship between neighborhood racial composition and the level of banking services. We use unique census tract-level data on banking services and neighborhood characteristics in Alameda County, California, from points in time before and after the recent wave of bank consolidations to eliminate as well as possible the potential for omitted variables bias that could plague cross-sectional study of the issue. Using a variety of specifications and numerous sensitivity checks, we find that minority neighborhoods (particularly black neighborhoods) are less likely to have banking services, and are more likely to lose services during bank consolidations.     

The Economics of Grain Cleaning on the Prairies

In the Canadian grain marketing system, grains have typically been cleaned to very tight levels at port elevators. In recent years, changes in rail rates, livestock production and grain handling technology are pressuring the system for change. A mathematical programming model of vertical marketing functions in western Canada is developed to determine optimal locations for cleaning. Cleaning margins are positive in all regions of the prairies. Grain cleaning is found generally to be more efficient on the prairies than at the ports. However, grain cleaning will continue at ports to some extent because of inadequate capacity at country positions and sunk costs at port facilities and because primary elevators will likely clean only the dominant grains. Dans le système canadien de commercialisation des céreales, les grains passent généralement par un nettoyage très rigoureux aux silos portuaires. Ces dernières années, les changements affectant les tarifs ferroviaires, les productions animales et la technologie de manutention des céréales rendent cependant nécessaire un changement du système. Les auteurs utilisent un modéle mathématique de programmation des fonctions verticales de mise en marché pour déterminer les emplacements idéaux pour le nettoyage du grain. Les marges commerciales des nettoyeurs étaient positives dans toutes les régions des Prairies et le nettoyage était généralement plus efficient dans cette partie di pays qu'aux situations portuaires. Il continuera cependant à sefaire à ces derniers endroits dans une certaine mesure, en raison du manque de capacités suffisantes aux emplacements de campagne, des coûts irrécupérabies aux installations portuaires et du fait que les élévateurs primaires ne nettoieront vraisemblablement que les céréales commercialement le plus importantes.     

Evaluation of inventory management: Efficiency can affect success

In many manufacturing companies, top management analyzes inventories only when financial trouble is at hand. The average amount of money committed to inventories is about three times the amount held in cash. It is rare that a member of top management gives the sustained attention to inventories that he gives to the company's cash position. A troubled company can take important steps in retrenching by evaluating its inventory management. However, this evaluation can be a part of the continuing analysis of the company's operations, in most cases as an outgrowth of auditing services. The resulting efficiencies can have a favorable effect on the company's success and growth—especially if money formerly tied up in inventories is freed for investment in other resources.     

Confidence intervals for batch properties based on both sampling and analytical variance

Summary If different random samples are taken from a heterogeneous batch and each sample is analysed once or in replicate, the average result is a point estimation of the true but unknown mean of the batch property concerned. In this paper, formulae are given for the numbers of degrees of freedom, which are necessary for interval estimations based on both the sampling and the analytical variance. It is essential to distinguish between situations in which estimates of the variances are available and in which they are not.