Does Manufacturing Still Matter?

Although employment in the manufacturing sector has declined over the past few decades, it continues to play an important role in many regions of the U.S. Most studies have not examined the spatial effects of manufacturing employment on regional job quality. In this paper, we consider the spatial dependence and spatial variation of this relationship in the Midwest. This analysis suggests that it is important to take into consideration spatial effects when examining the implications of economic restructuring for regions. Labor market areas are not distinct spatial units and can be influenced significantly by nearby local labor markets. Once that spatial dependence is considered, manufacturing has a negative and significant effect on underemployment by low earnings, but its effect is not significant in labor hardship associated with work time and steadiness. At the same time, our analysis demonstrates that the effects of manufacturing employment vary across local labor markets. More specifically, these findings suggest that in those areas in the Midwest that have historically had higher concentrations of manufacturing jobs, the benefits of working in this sector are smaller. In regions that have not had a large manufacturing sector and have experienced some gains in recent years, the benefits of working in the manufacturing sector are larger.     

The effect of exposure to a professor with a visible disability on students' attitudes toward disabilities

An exploratory study was conducted on a small convenience sample of undergraduate social work students. The Modified Issues in Disability Scale was used to collect data on attitudes toward disability. There was no statistically significant difference in the attitudes scores among students who had different levels of contact with persons with disabilities. There was, however, a statistically significant difference between students who had a professor with a disability and those who did not. The former had more positive attitudes toward disability. These findings suggest that schools of social work should recruit more professors with disabilities.     

Managing Perishables with Time and Temperature History

We address the use and value of time and temperature information to manage perishables in the context of a retailer that sells a random lifetime product subject to stochastic demand and lost sales. The product's lifetime is largely determined by the temperature history and the flow time through the supply chain. We compare the case in which information on flow time and temperature history is available and used for inventory management to a base case in which such information is not available. We formulate the two cases as Markov Decision Processes and evaluate the value of information through an extensive simulation using representative, real world supply chain parameters.     

Organizational boundaries and upward job shifts

Recent research has examined the role of organizations in the stratification system and the functioning of stratification systems in organizations. In this analysis, we examine the implications of organizational boundaries for upward job changes within and across organizations. To perform our analysis, we utilize a nonstationary, modified Markov model that allows consideration of individual and job heterogeneity. The data are life histories of a sample of U.S. males between the ages of 30 and 39. Our results indicate that organizational boundaries create two kinds of resources: (1) general resources, and (2) organization-specific resources. General resources have a positive effect on upward movement within and across organizational boundaries. Organization-specific resources have a positive effect on upward movement within organizational boundaries, and a negative effect on upward movement across organizational boundaries—a situation of great benefit to organizations.     

A test of generalized expected utility theory

In two experiments we test Machina's Hypothesis II (fanning-out). In each experiment we analyze patterns of responses to hypothetical lottery choice questions within a Marschak-Machina triangle. One set of questions involves lotteries on the border of the triangle, an the other set of questions involves lotteries in the interior of the triangle (off the border). Our results show that a large proportion of the observed patterns in the on-border treatment support Hypothesis II, with a considerable amount of fanning-out behavior observed. The patterns observed in the off-border treatment are significantly different from those in the on-border treatment. Hypothesis II performs well in the off-border treatment because expected utility theory itself, which satisfies the restrictions of Hypothesis II, performs well.This is an expanded version of a paper originally prepared for presentation at the Fifth International Conference on the Foundation and Applications of Utility, Risk, and Decision Theories, held June 9–13, 1990 at Duke University, Durham, NC. We acknowledge helpful comments made by participants at that conference, especially those of Mark Machina.     

Videotape safaris: Entering the field with a camera

In this paper, I examine how video methods are used to record what people do as a basis for generating ideas, constructing data, testing hypotheses, and developing grounded theory. Fieldwork with a camera captures emergent social structure and processes that arise from human interaction. While the discovery of serendipitous findings through video methods provokes new theoretical questions, this intrusion into the lives of others also raises ethical and legal issues for the researcher. I conclude that video methods constructively reorient the investigator to the behavior being studied.This research was supported in part by DHEW-SRS grant number 16-P-56809/5-07 NIH and National Library of Medicine grant number 5 K10 LM 0063-02. My thanks go to Doctors Henry Betts and Byron Hamilton from the Rehabilitation Institute of Chicago who offered strong support throughout the three years of this research effort. My appreciation also goes to Meredith Gould for editorial assistance with this paper and to Sean Keenan of the Rehabilitation Institute of Chicago who made the cover photo possible.     

积累点滴想法，收获非凡成就

企业往往忽视看似毫不起眼的建议,其实这些建议中 有许多能促进增长,让企业具备竞争优势 想方设法推动增长与盈利的经理人往往以为,卓尔不凡的 点子才是好点子。事实并非如此,内心光想着获得一鸣 惊人的高见,会让经理人对小点子的贡献视而不见。对 小点子嗤之以鼻,可能就等于拒绝了各种各样的收益,比如更强 的竞争优势、节省成本的手段,以及通过积累小点子培养更为高 明的见解。