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241.
"I describe a course on international demography in this paper. The course enables students to use demographic concepts to understand the demographics of various countries and regions. The course involves an introduction, examination of specific geographic regions, and a concluding overview. I also describe several student projects and review available course materials."  相似文献   
242.
Computers have become commonplace in nearly every setting, from home to office. In addition to their usefulness for managerial tasks, they have the potential to aid the primary decision-making tasks of professional social service workers. The benefits and background of such "expert systems" are explored, and the structure of one experimental consulting program for child welfare workers, PLACECON, is presented.  相似文献   
243.
Two questions concerning the location of a single facility by a voting process are investigated for transportation networks:
  • - What is the maximum number of customers located on the network preferring some rival point over a voting solution?
  • - How does the average distance of the customers to the facility increase when a voting location instead of a Weber location is chosen for the facility?
  • Complete answers are given for general networks and for certain planar networks, viz., the so-called generalized cacti.  相似文献   
    244.
    A univariate time-series model is presented for projecting age- or duration-specific data for recent cohorts. The model is also capable of taking period effects into account, is illustrated using Dutch data on marital fertility rates.  相似文献   
    245.
    The economic adaptation of immigrants to Canada is analyzed using government data on the labor force and landed immigrants. In particular, the labor force experience of a sample of immigrants in Canada is examined and compared with that of a Canadian cohort with regard to length of unemployment and income. "Differences in unemployment and insurable earnings are examined by age, sex, immigrant category..., world area of last permanent residence, official language abilities, education, and region of residence." (summary in FRE, SPA)  相似文献   
    246.
    Attitudes toward the Equal Rights Amendment were not an importantfactor in the emergence of the "gender gap" in the 1980 presidentialelection. Conclusions to the contrary by news analysts, feministpolitical activists, and political scientists are based on acombination of the power of expectation, faulty analysis, andrandom bias in the most frequently used survey in politicalscience. The data analyzed herein were collected by the New York Timesand CBS News and processed by the New York Times and CBS Newsunder a grant from the Russell Sage Foundation; by Warren E.Miller and the National Election Studies of the Center for PoliticalStudies at the University of Michigan; and by the National OpinionResearch Center of the University of Chicago. The data wereprovided through the Interuniversity Consortium for Politicaland Social Research of the University of Michigan. The New YorkTimes, CBS News, the CPS, NORC, and the ICPSR bear no responsibilityfor the analysis and interpretations presented here.  相似文献   
    247.
    Blue Shield plans often are granted regulatory advantages by the states in which they operate. Run efficiently, such not-for-profit firms should use these lower costs to eliminate their less advantaged rivals, the commercial insurers. However, these higher-cost commercial providers have been able to offer insurance coverage at prices competitive with the Blues, as evidenced by the fact that Blue plans have, on average, less than 50 percent market share. Similar prices with lower overall costs implies that economic rents are being earned, rents which a not-for-profit firm cannot distribute to owners. In this paper we argue that when there are competing goals among the groups controlling the Blue Shield plans, the different possible "uses" of the regulatory advantage become endogenously determined, necessitating the use of simultaneous equation estimation. Testing this model we find the major effect of doctor-control of Blue Shield plans is to raise doctors' fees while lowering the amount of rents captured by both consumers and administrators.  相似文献   
    248.
    This study compared gay men in monogamous ("closed") relationships (n = 98) and gay men in nonmonogamous ("open") relationships (n = 34). Partners in open relationships were living together significantly longer than partners in closed relationships. Partners in the two types of relationships did not differ in Psychological Adjustment. Controlling for length of time living together, partners in closed relationships reported higher Affiliation/Dependency, more Favorable Attitudes toward the Relationship, and lower Tension than partners in open relationships. Global relationship quality for both types of couples was related to many Attractions, many Barriers, and few Alternatives to the relationship; few beliefs regarding both Disagreement is Destructive and Partners Cannot Change; high Dyadic Attachment; high Shared Decision Making; and low Psychological Maladjustment. Partners in both types of relationships were more similar to each other than different from each other, especially on the variables of Relationship Quality, a belief in Partner Changeability, and Dyadic Attachment.  相似文献   
    249.
    250.
    A high population growth rate in the Middle East is prompting investigators to look for cultural conditions and attitudes that can be encouraged to facilitate lower fertility rates. Population researchers find an inverse relationship between the educational level of females and their fertility, especially in Third World countries. This suggests that education can become an internal cultural mechanism for population control. The author explores this notion using data collected from interviews with 750 teenage girls and their mothers in Cairo, Egypt.  相似文献   
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