Physician executives: where they are and what they do

As hospital operations become increasingly complex, so does the institution's management and organizational structure. Physician executives with titles of medical director, vice president for medical affairs, medical administrator, chief of staff, medical staff president, etc., are playing more important roles than ever before. This article will briefly review some recent literature describing physician executive profiles. The results from a survey of ten university teaching hospitals are also presented as supplementary information regarding current staffing models. Finally, several physician executive staffing-related issues will be discussed in light of the literature and the survey results.     

German-Polish migration: the elusive search for a German nation-state

"This article examines past and present migrations to Germany from the perspective of nation-state formation.... Focusing on the many experiences with the Polish minority (ranging from the eighteenth century to the present), this essay suggests that Germans have never discovered an acceptable and workable approach for dealing with large non-German minorities in the German nation-state. Rather, different regimes at different times have vacillated between an exclusive approach founded on nationalist principles and practices and an inclusive one founded on liberal principles and practices.... The confusion over the two approaches produces not only a confused immigration policy, but also reflects deep-seated confusion over the definition of the new German state and identity of the newly united German nation."     

Return migration from Australia: a case study

"The study investigates the departure from Australia of former settlers who arrived during the 1980 calendar year. The 1980 settler arrival cohort [consists] of 75,167 visaed migrants.... The study has three main aims: (i) to analyse departures from Australia of the 1980 settler arrival cohort with a view to gauging the success of Australia's immigration program in retaining settlers; (ii) to examine the retention rates of settlers with respect to characteristics...including age, sex, marital status, country of last residence, and settler eligibility category; and (iii) to consider implications of the findings." Australia's present immigration policy is discussed, previous research on return migration from Australia is summarized, and a detailed analysis of the departure data is presented. "This study found that by August 1984, 12.4 per cent of non-refugee settlers who arrived in Australia during 1980 had departed permanently but that only 0.6 per cent of the 1980 refugee cohort had done so." These figures represent a decline in immigrant departure rates since the 1960s and early 1970s. Small differences in departure rates by place of birth, age, and marital status, which may have demographic consequences if sustained over time, are noted. (SUMMARY IN FRE AND SPA)     

Stochastic population models for the analysis of the effects of demographic processes on social security systems

The aim of this paper is to describe several methods for quantifying the amount of uncertainty inherent in population forecasts used to assess the impact of demographic processes on social security systems. Each method is briefly outlined, and its advantages and disadvantages are discussed. The primary emphasis is on stochastic population models, and the geographic focus is on the Federal Republic of Germany.     

Temporary workers in Canada: a multifaceted program

"This article highlights important developments in the character of temporary worker flows to Canada between 1973 and 1985 through the use of unpublished data and new measures for analyzing this data. The number of employment authorizations are converted to person years to indicate the overall labor market impact of temporary worker flows and this measure is employed in an analysis of unpublished data from Employment and Immigration Canada. The analysis reveals that a significant and growing proportion of employment authorizations are exempted from governmental procedures which link the admission of temporary workers to the Canadian labor market." Reasons for these exemptions and policy implications are discussed     

The nature and scope of international migration data in Nigeria

Nigeria, the largest country in Western Africa, has been attracting migrants from neighboring countries for the past decade or so. Although most of the movement of African migrants has occurred outside the regulatory framework set up to control migration, it is important to know the main elements of the latter to understand the likely limitations of the data collection systems currently in operation. Sources of data on international migration include censuses, arrival and departure statistics, work and resident permits, and sample surveys. The author concludes that, with the exception of information on residence and work permits, the relationship between Nigeria's data sources and the laws regulating migration is weak. Arrival and departure statistics, in particular, are not designed to distinguish migrants from all other international travellers. Lacking the political will to modify the system in accordance with internationally accepted recommendations, the prospects for increasing the usefulness of available data are grim.     

A generalization of Petersen's typology of migration

A typology of migration is presented that extends the one originally developed by William Petersen, which was based on ecological push, migration policy, people's aspirations, and social momentum. The proposed typology considers both the migrant's state of mind and two points in time. Examples of 36 migrant types are provided using data for Canada and selected other countries. (SUMMARY IN FRE AND SPA)     

论自由主义的小说理论

自由主义理论将小说的发展归因于资产阶级和现代资本主义的兴起,以及随之而来的自由个人主义意识形态的增长.这一理论认为,"小说在其道德和心理的焦点上,在其生产与分配的工业技术上,在其所要求于读者的个人小天地、闲暇和阅读习惯上,正好同工商业资产阶级的伟大时代相适应."L.特里林与W.J.哈维的著作提出了自由主义哲学与小说形式之间存在着一种更为复杂的联系.按哈维的说法,小说有一种本能作为其支配中心,即"承认人们在社会中的丰富性、多样性和个别性,同时相信这些特征作为目的本身都是好的",而且它以生存的复杂性为乐,并容许有多种的信念和道德准则.在I.瓦特具有广泛影响的著作《小说的兴起》中,有着对自由主义理论的系统探索,它随意地将中产阶级的发展和18世纪的英国小说联系起来,使这两种看法相结合,表示这种阶级间的相互联系也体现在笛福·理查逊和菲尔丁的"形式现实主义"的作品中.瓦特从叙述技巧的角度对"形式现实主     

基于多目标决策的钢轨减磨方案优选研究

本文以提升城市公园人行层风环境舒适度为目标,通过PHOENICS数值模拟的方式,研究探索不同植被类型和不同植被类型搭配对人行高度处风速的影响特征,并提出适合不同风况下的植被类型搭配组合,以期为公园风环境设计研究提供参考依据。研究结果显示,两种植物类型搭配中,小乔木+大灌木对人行层高度风速衰减效率最佳,大乔木+中乔木对风速影响范围最大;三种植物类型搭配中,中乔木+小乔木+大灌木对人行层高度风速衰减效率最佳,大乔木+中乔木+小乔木对风速影响范围最大。     

空间嵌入视角下民族互嵌型社区的形成与发展——新疆塔城哈尔墩社区的个案

文章基于新疆塔城哈尔墩社区的田野调查,从空间嵌入的视角对该民族互嵌型社区形成和发展的历程,即社区的生命史进行描述和分析。调查发现,该社区的生命史反映了清末以来各民族人口向塔城迁移汇聚的历史进程,是塔城各民族由“小聚居”逐渐走向“嵌入”历程的一个缩影。文章认为,应加强对历史上形成并延续至当下的民族互嵌型社区的调查和研究,以空间嵌入为“起手棋”,关照社区生命史与族群生活史的互构,并将社区的小历史嵌入于整体社会的大历史中,进而从“国家—区域—地方”三个维度的互动中对这类社区的形成与发展进行解释。