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141.
Bela Balassa 《Journal of Policy Modeling》1980,2(3):437-455
This paper examines prospective changes in trade in manufactured goods between the industrial and the developing countries. Assuming the continuation of the policies followed by the industrial countries, it is projected that the manufactured imports of these countries from the developing countries would rise at an average annual rate of 12.5% between 1978 and 1980 while their manufactured exports would increase 9 7% a year. Nonetheless, the export surplus of the industrial countries in trade in manufactured goods would rise, contributing to the growth of industrial output. The expansion of their exports of manufactured goods would also contribute to economic growth in the developing countries, and both groups of countries would benefit from specialization according to comparative advantage. 相似文献
142.
Steven Walfish Douglas Wentz Peggy Benzing Fran Brennan Steven Champ 《Evaluation and program planning》1981,4(2):163-168
This paper reports the results of a needs assessment study conducted by a university-based alcohol abuse prevention project. Data are presented on the drinking patterns and drinking problems of a random sample of 462 students. Results suggest that students are experiencing numerous difficulties in the physical, educational, legal and psychosocial areas due to their use of alcoholic beverages. Implications for prevention and intervention programming are discussed and the need for planning programs from a data-based perspective rather than a rational and intuitive approach is stressed. 相似文献
143.
Stephen Magura 《Children and youth services review》1981,3(3):193-212
The prevention of foster care became an important issue for child welfare services during the 1970s. Two main types of prevention models have emerged: crisis intervention programs intended to prevent imminent placement and intensive service programs designed to avert those crisis situations that precipitate placement. A critical analysis of several project evaluations leads to the conclusion that neither model has been markedly successful. Low nominal project placement rates seem attributable to inability to predict placements and to client selection biases. From a strictly financial perspective, preventive services have been considerably more expensive than regular services, including temporary family foster care. Data from a new demonstration project in New Jersey illustrate various problems in providing and evaluating preventive services to families referred to protective service agencies. Implications of the findings for prevention programs and policies are discussed, and a new direction focused on truly early intervention with children and families is proposed. 相似文献
144.
J.Q. Longyear 《Journal of statistical planning and inference》1981,5(2):181-187
A nest with parameters (r,k,λ)→(r′,k′,λ′) is a BIBD on (b,v,r,k,λ) where each block has a distinguished sublock of cardinality k, the sublocks forming a (b,v,r,k,λ)-design.These designs are ‘nested’ in the sense of W.T. Federer (1972), who recommended the use of these designs for the sequential addition of periods in marketing experiments in order to retain Youden design properties as rows are added. Note that for a Youden design, the b columns and v treatments are in an SBIBD arrangement with parameters v=b, k=r, and λ. 相似文献
145.
以马克思主义理论为视角,结合时代语境探讨后现代设计的人文属性和发展趋势具有十分重要的意义。在设计思想中应协调好人与自然、人与社会、人与人等各方面的关系,体现出和谐发展、技术与经济互动和人文精神的吸纳等设计理念的"人文回归",为现今设计理论的发展提供思想依据,使设计成为生态和谐、人文交融、科技发展、经济腾飞的行为前提,从而推动人类科技创新和发展走上健康的轨道。 相似文献
146.
Bounds for the maximum deviation between parameters of a finite population and their corresponding sample estimates are found in the multiple regression model. The parameters considered are the vector of regression coefficients and the value ofthe regression function for given values of the independent variable (or variables). Applications are considered to several widely employed sampling methods. 相似文献
147.
Let πi(i=1,2,…K) be independent U(0,?i) populations. Let Yi denote the largest observation based on a random sample of size n from the i-th population. for selecting the best populaton, that is the one associated with the largest ?i, we consider the natural selection rule, according to which the population corresponding to the largest Yi is selected. In this paper, the estimation of M. the mean of the selected population is considered. The natural estimator is positively biased. The UMVUE (uniformly minimum variance unbiased estimator) of M is derived using the (U,V)-method of Robbins (1987) and its asymptotic distribution is found. We obtain a minimax estimator of M for K≤4 and a class of admissible estimators among those of the form cYmax. For the case K = 2, the UMVUE is improved using the Brewster-Zidek (1974) Technique with respect to the squared error loss function L1 and the scale-invariant loss function L2. For the case K = 2, the MSE'S of all the estimators are compared for selected values of n and ρ=?1/(?1+?2). 相似文献
148.
刁洪 《重庆工商大学学报(社会科学版)》2017,34(6):115-121
本研究以CNKI期刊数据库中1997至2016年间关于影视翻译研究的论文为数据来源,运用CiteSpaceV软件的科学知识图谱,进行国内影视翻译研究可视化分析.通过考察影视翻译研究的发文数量、论文发表载体、主要研究领域、高频关键词和高产作者(机构)等,作者梳理了国内影视翻译研究的发展脉络与现状.分析结果显示,我国影视翻译研究在经历了一段"升温"后,正在呈现"降温"趋势,研究焦点集中在热映外国影视作品的字幕汉译.文章进而提出了影视翻译研究存在的问题,并展望了未来研究方向,以期为我国该领域的研究提供启示. 相似文献
149.
产品类型和感知风险对消费者属性同异选择的影响研究 总被引:1,自引:0,他引:1
前期的情境效应研究发现,相同属性同异选择集下的消费者选择行为完全相反,这为同异属性选择集下的消费者选择研究留下了悬而未决的矛盾.文章利用情境模拟实验法,将感知风险和产品类型纳入整合的研究框架,从感知、风险规避和效用等方面研究消费者属性同异选择行为.研究发现,高感知风险下消费者对趋同产品的选择显著多于低感知风险情形,而低感知风险情形下对趋异产品的选择则相反.同时,感知风险和产品类型对消费者属性同异选择存在交互作用,在高感知风险下对实用品的选择情形中,消费者倾向于趋同选择;在低感知风险下对享乐品的选择情形中,消费者偏好作出趋异选择;在其他情形下对消费者选择的影响则不显著.研究结论弥合了属性趋同效应和知觉聚焦效应的矛盾,对企业的同异策略选择提供了重要的参考依据. 相似文献
150.
现代英语中词类转类现象最为活跃的是名词转类,它包括名词转化为名词定语以及名词转化为动词。文章旨在就英语名词的转化来分析它的类型、形式、特点。 相似文献