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1.
Does the presence of immigrants help determine the types of jobs that exist in American cities and the size of various sectors of these cities' economies? This study explores the relationship between immigration and labor market demand in U.S. metropolitan areas. I employ information about the occupational distribution of recent immigrants as compared to natives to analyze the circumstances under which the two groups are more likely to compete with or complement each other. The findings lend qualified support to Light and Rosenstein's (1995) specific demand hypothesis: many immigrants fill occupational niches that would not exist in their absence. The strength of this conclusion is contingent on city size and immigrants' level of education.  相似文献   
2.
This paper is concerned with cases in which patients who have been well established in treatment decide to end it prematurely. In examining the issue among my patients who left against my advice, I isolated in some of them a number of common traits, of which the existence of a long-standing idealizing transference was central. Four of these cases are presented, including two in which the resistance was successfully penetrated and two in which it was not and the patient left treatment. The definition of premature termination is seen in the context of that of a complete analysis.  相似文献   
3.
Rural development and urban migration: can we keep them down on the farm?   总被引:1,自引:0,他引:1  
This study tests the hypothesis that rural development projects and programs reduce rural-urban migration. The author presents various factors in the social theories of migration, including those relating to origin and destination, intervening obstacles such as distance, and personal factors. 3 economic models of migration are the human capital or cost-benefit approach, the expected income model, and the intersectoral linkage model. Empirical studies of migration indicate that: 1) rural areas with high rates of out-migration tend to have high population densities or high ratios of labor to arable land, 2) distance inhibits migration, 3) rural-urban migration is positively correlated with family income level, and 4) selectivity differences in socioeconomic status between migrants and nonmigrants often are grouped into development packages which might include irrigation, new varieties of seed, subsidized credit, increased extension, and improved marketing arrangements. The migration impacts of some of these efforts are described: 1) land reform usually is expected to slow rural out-migration because it normally increases labor utilization in rural areas, but this is a limited effect, 2) migration effects of the Green Revolution technology are mainly in rural-rural migration, and 3) agricultural mechanization may stimulate rural-urban migration in the long run. Development of rural social services migh have various effects on rural-urban migration. Better rural education, which improves the chances of urban employment, will stimulate rural-urban migration, while successful rural family planning programs will have a negative effect in the long run as there will be reduced population pressure on arable land. Better rural health services might reduce the incentive for rural-urban migration as well. It is suggested that governments reconsider policies which rely on rural development to curb rural-urban migration and alleviate problems of urban poverty and underemployment.  相似文献   
4.
This paper is intended to assist professors, administrators, librarians and other members of university level committees that must consider research expectations and research quality in academic fields that they lack. While this is not a problem for field experts, it is a difficulty when people are asked to make decisions in areas of study other than their own. This is commonly the case for senior university professors, librarians and administrators in regards to university wide decisions. The paper investigates this gap, through a study of 27 academic fields in 348 highly regarded universities. We find that there are almost always statistically significant differences in activity between academic fields, regardless of the metric one considers. However, it is possible to understand these differences by comparing the distribution of a known academic field to that of a field that one is not familiar with. Tables and information are provided to assist in the comparison of different fields of study on metrics such as: departmental publications and researcher level metrics of publications, citations, H-index, and total number of co-authors. The information can also be used to support decisions associated with promotion to senior posts such as endowed chairs and professorships. Information regarding specific universities and researchers are included in the data supplement.  相似文献   
5.
Non-governmental organizations (NGOs) in sub-Saharan Africa (SSA) experience financial challenges that hinder efforts to promote social change and development. Revenue diversification is one adaptive response to these challenges, yet there is a lack of evidence concerning the relationship between revenue diversification and financial vulnerability among NGOs in SSA. Using data from an online survey of NGOs (N = 170), we hypothesized that a greater number of revenue sources is associated with lower probability of financial vulnerability, while a greater level of dependence on international funding is associated with higher probability of financial vulnerability. Results from probit regression models controlling for organizational characteristics indicated partial support for hypotheses. Having four or more types of revenue was associated with 87% lower probability of financial vulnerability compared to having one type of revenue (p < 0.001). Also, NGOs with up to half of their budgets covered by international sources had 17% lower probability of financial vulnerability compared to NGOs with no international funding (p < 0.05). Implications for future research to further explore these relationships are discussed.  相似文献   
6.
This article looks at three measuring instruments—the Right-Wing Authoritarianism Scale, the Social Dominance Orientation Scale, and the Attitudes About Reality Scale—used to examine covert ideology and its relationship to social and political beliefs and behaviors. These scales share similar ideological components involving abdication of moral responsibility to an outside agent, belief that one's own ideology represents the only form of truth, and negative beliefs about individuals who are not members of one's own group. Evidence is provided to suggest that radical fundamentalists and some groups within U.S. society share ideological beliefs that differ in degree rather than kind. These beliefs make it easy for them to divide the world into "us" and "them" and exacerbate the present conflict.  相似文献   
7.
Abstract

This study reports on the short-term effects of an educational programme for immediate supervisors on employees' back pain problems. The course was designed to help supervisors more efficiently deal with employees returning to work after being treated for back pain. Forty-seven supervisors who had personnel either undergoing treatment for back pain problems or were candidates for this treatment were invited to attend a one-day course. This educational package consisted of information about back pain and stressed specific behaviours which supervisors could use to help their employees successfully return to work. The results showed that 78% of the supervisors found the course to be satisfactory enough to recommend it to a colleague without hesitation. Furthermore, independent ratings made by the supervisors and their employees suggested that supervisors complied with the recommended programme. Returning employees, moreover, gave their supervisors significantly higher ratings of support than a control group whose supervisors had not attended the educational programme. It was concluded that an educational programme which alters specific supervisory behaviours may be an effective method of assisting employee return to work after treatment for back pain. Further research is needed to determine the long-term effects of such a programme on absenteeism due to illness.  相似文献   
8.
ABSTRACT In most treatments of nonparametric regression, it is assumed that the marginal density of the explanatory variables is strictly bounded away from zero and infinity. This note investigates the pointwise asymptotics for nonparametric regression when this assumption fails, that is, the marginal density of the explanatory variable has either an isolated zero or a pole at the point of interest.  相似文献   
9.
This is an examination of a set of dimensional conceptions of graphs that might be used to shed light on the structural complexity of social networks. Problems of characterizing various conceptions are explored and computational methods are reviewed.  相似文献   
10.
Open innovation, fuelled by the rise of the Internet, has made it feasible and cheaper for firms to open themselves up to a wide range of external sources of innovative ideas. The explosive growth of open innovation intermediary networks, such as InnoCentive or Linked‐in, enables the rapid pairing of firms seeking knowledge to address a wide range of business challenges (seekers) with other firms or individuals who already have relevant knowledge (solvers or knowledge brokers). These intermediary networks allow procurement departments to source codified and un‐codified knowledge from firms or individuals outside their traditional supplier networks using one‐off transactional relationships. Although sourcing ideas in this way theoretically poses problems for knowledge search and transfer, we have found that companies can draw on processes and integration mechanisms developed by procurement and design engineering to develop effective organizational learning routines. These routines are strategically vital to source new ideas through open innovation using intermediary networks and create competitive advantage.  相似文献   
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