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941.
Recent changes in the United States health care system include a broadened definition of health and renewed focus on public health. Increasingly, demographic analyses are incorporated into public health decision-making. Analysts also are using geographic information more routinely, because Geographic Information System (GIS) software is becoming easier to use. The paper describes three cases in which demographers used GIS to analyze the spatial distribution of public health data. The first case, from Santa Clara County, California, focuses on adolescent sexually transmitted diseases in secondary school districts. The second case, also from Santa Clara County, maps preventable hospitalizations of senior citizens. The third examines the distribution of premature births in Tennessee counties. The researchers applied demographic techniques and perspectives in each case, and each case produced information that is being used by officials who plan health education campaigns and services. 相似文献
942.
三大都市圈是中国重要的经济承载区和人口承载区,对三大都市圈的人口迁移研究对于整个中国的人口迁移研究来说很具有代表性。本文运用空间统计中有关方向和距离的研究方法来研究三大都市圈人口迁移规律。研究结果表明,影响地区之间人口迁移量的主要因素有经济差距、人口规模、地理距离和气候差别。根据分析结果,参照吉佛的引力模型建立三大都市圈与全国其它各地州市的人口迁移量模型。 相似文献
943.
Florence D. DiGennaro Reed Amy J. Henley Skyler Rueb Brittany Crabbs Lauren Giacalone 《Journal of Organizational Behavior Management》2013,33(2-3):202-209
This study replicated the methods of a previous review and assessed the frequency with which discussions of basic behavioral principles occurred in a sample of research and case studies published in Journal of Organizational Behavior Management. A total of 127 research and case studies published between 2006 and 2015 were reviewed; 67 included a discussion of behavioral principles. The percentage of research articles and case studies discussing behavioral principles was higher than that found in previous research. The most frequently described principle was reinforcement. Our findings also documented a higher percentage of laboratory studies discussed behavioral principles. 相似文献
944.
Simon Board Moritz Meyer‐ter‐Vehn 《Econometrica : journal of the Econometric Society》2013,81(6):2381-2462
We propose a model of firm reputation in which a firm can invest or disinvest in product quality and the firm's reputation is defined as the market's belief about this quality. We analyze the relationship between a firm's reputation and its investment incentives, and derive implications for reputational dynamics. Reputational incentives depend on the specification of market learning. When consumers learn about quality through perfect good news signals, incentives decrease in reputation and there is a unique work–shirk equilibrium with ergodic dynamics. When learning is through perfect bad news signals, incentives increase in reputation and there is a continuum of shirk–work equilibria with path‐dependent dynamics. For a class of imperfect Poisson learning processes and low investment costs, we show that there exists a work–shirk equilibrium with ergodic dynamics. For a subclass of these learning processes, any equilibrium must feature working at all low and intermediate levels of reputation and shirking at the top. 相似文献
945.
CRISTIAN TOMASETTI 《Mathematical Population Studies》2013,20(4):200-213
The probability distribution for the size of each of the various cancer cell subpopulations created by random genetic mutations is expressed in the case of non-exponential growth of cancer and in the case of a heterogeneous tumor cell population. 相似文献
946.
Approximately 52 million Americans provide informal (unpaid) care to a family member or friend who is disabled or ill. The most common informal caregiving relationship is that of an adult child providing assistance to an aging parent. This article describes a qualitative study examining how adult daughters between the ages of 50 and 65 become caregivers to their parent or parent-in-law. Data were collected through in-depth, face-to-face interviews with 15 female caregivers. Analysis revealed that assistance provided to parents was initiated by one or more triggering event, after which participants became caregivers in either an emergent or deliberate manner. 相似文献
947.
上海是一座典型的移民城市,其独特的经济文化吸引了大量的外籍人口来此居住生活。在上海城市发展进程中,外籍人口数量呈现波动性增长,空间分布范围也逐步扩大,外籍人口分布重心由上海老县城移向北面的虹口区,然后由虹口区向西南的徐汇区转移。上海市外籍人口空间分布特征一方面受交通运输方式改变的影响,另一方面受上海市产业布局的变动和国家政策导向的影响。基于上海市第六次人口普查数据,通过对外籍人口空间分析可知,外籍人口在上海市形成了以地铁二号线为轴心的条带状分布形态,人口分布为典型的空间集聚模式,在闵行区的虹口镇和浦东区的花木镇形成了两个热点分布区域,并且不同国家的外籍人口具有不同的空间集聚形态。 相似文献
948.
利用2012年上海少数民族常住人口分布数据,采用数理统计和ESDA技术对上海少数民族常住人口数量、分布状况进行研究.研究表明:上海少数民族常住人口数量不断增加且集中分布于中心城边缘区和近郊区;少数民族常住人口在空间格局上存在显著的“同质集聚、异质隔离”;显著的“冷点”区域主要集中在崇明县、金山区等远郊区,显著的“热点”区域主要集中在五角场区域和九亭镇,较为热点的区域主要集中于花木镇、七宝街道、江川路街道、车墩镇和新桥镇等区域,而青浦区、浦东新区大部分区域则是较为冷点区域,中心城区大部分区域形成了随机分布的区域;不同族别的少数民族分布状况有着较大差异,亲缘、地缘和族缘为纽带的乡土观念仍然是少数民族常住人口集聚的重要因素. 相似文献
949.
《Mobilities》2013,8(5):667-685
AbstractThis article draws on a qualitative, interview-based project to argue that emotionally close friendships at-a-distance can create distinctive spatial sensibilities of friendship. These sensibilities are formed when friends move apart geographically. In part, they are composed of the tangible forms of friendship practices (such as visiting), but their main constituent is the more intangible emotional bond between friends which can extend across considerable distances. The spatial sensibilities of friendship thus form particular geographies of intimacy; they shape how individuals come to understand and ‘feel’ spatial distances, and influence individuals’ own feelings about moving. 相似文献
950.
The aim of this article is to study how the corporeal and digital mobilities are spatially organised in relation to each other in everyday life. The dimensions of mobilities are modelled by using survey data (N = 612) collected from Finland in 2011, Multiple Correspondence Analysis (MCA) and Multiple Regression Analysis (MRA). The results show that the combined use of corporeal and digital means of mobility affect the spatial organisation of mobilities only little. The results indicate that young people and students are more likely to benefit from their mobility in networking activities as they are equipped with a larger variety of mobility means than older people and pensioners. Lastly, women and people living in essentially urban areas are more likely to augment their physical travelling practices by using small-sized digital mobilities than men and people living in rural locations. 相似文献