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91.
Robert D. Brooks 《Econometric Reviews》2013,32(1):35-53
The literature on testing for the presence of Rosenberg's (1973) return to normalcy random coefficient model is well developed with both Shively (1988) and Brooks (1993) advocating the use of point optimal tests. This paper explores the robustness of point optimal testing for the Rosenberg alternative to two departures: the special case HildrethHouck (1968) alternative and non-normality in regression disturbances, finding the point optimal testing approach to be fairly robust to both departures. 相似文献
92.
Lee Lung-Fei 《Econometric Reviews》2013,32(3):319-328
Amemiya's generalized least squares method for the estimation of simultaneous equation modeis with qualitative or limited dependent variables is known to be efficient relative to many popular two stage estimators. This note points out that test statistics for overidentification restrictions can be obtained as by-products of Amerniya's generalized least squares procedure. Amemiya's procedure is shown to be a minimum chisquare method. The Amemiya procedure is valuable both for efficient estimation and for model evaluation of such models. 相似文献
93.
Determining whether per capita output can be characterized by a stochastic trend is complicated by the fact that infrequent breaks in trend can bias standard unit root tests towards nonrejection of the unit root hypothesis. The bulk of the existing literature has focused on the application of unit root tests allowing for structural breaks in the trend function under the trend stationary alternative but not under the unit root null. These tests, however, provide little information regarding the existence and number of trend breaks. Moreover, these tests suffer from serious power and size distortions due to the asymmetric treatment of breaks under the null and alternative hypotheses. This article estimates the number of breaks in trend employing procedures that are robust to the unit root/stationarity properties of the data. Our analysis of the per capita gross domestic product (GDP) for Organization for Economic Cooperation and Development (OECD) countries thereby permits a robust classification of countries according to the “growth shift,” “level shift,” and “linear trend” hypotheses. In contrast to the extant literature, unit root tests conditional on the presence or absence of breaks do not provide evidence against the unit root hypothesis. 相似文献
94.
本文基于中国1952-2007年时序数据定量研究经济增速放缓的福利损失和经济波动的福利损失,并侧重考察两种福利损失的大小关系在改革开放和经济体制改革目标确立前后的阶段差异。研究发现,无论是总体而言,还是在中国经济发展的不同阶段,经济波动的福利损失并不必然远小于经济增速放缓的福利损失,在相关参数的合理取值范围内,经济波动的福利损失大于经济增速放缓的福利损失是相当普遍的情形。因此,中国政府部门在重视长期经济增长的同时,不能草率否定短期经济稳定的重要性。 相似文献
95.
本文将消费习惯引入Lucas (1987)模型,采用农村五等份收入户的人均消费数据进行数值模拟,结果发现: 消费增长比消费平稳更重要,且收入等级越高,这种相对重要性就越突出。相对风险规避系数一定时,两类福利成本之比随习惯强度变化的轨迹呈倒U型; 习惯强度一定时,两类福利成本之比随相对风险规避系数的增大而递减。相对于其他等级的收入户,促进消费增长的经济政策为高收入户带来相对较多的福利,而平抑消费波动的经济政策能为低收入户带来较多的福利。因此,政府在促进农村居民消费增长的同时,也应重视消费波动给低收入群体造成的福利成本。 相似文献
96.
Efficient industrial experiments for reliability analysis of manufactured goods may consist in subjecting the units to higher stress levels than those of the usual working conditions. This results in the so called "accelerated life tests" where, for each pre-fixed stress level, the experiment ends after the failure of a certain pre-fixed proportion of units or a certain test time is reached. The aim of this paper is to determine estimates of the mean lifetime of the units under usual working conditions from censored failure data obtained under stress conditions. This problem is approached through generalized linear modelling and related inferential techniques, considering a Weibull failure distribution and a log-linear stress-response relationship. The general framework considered has as particular cases, the Inverse Power Law model, the Eyring model, the Arrhenius model and the generalized Eyring model. In order to illustrate the proposed methodology, a numerical example is provided. 相似文献
97.
Stephanie Long 《Australian Social Work》2020,73(1):105-117
ABSTRACTVicarious trauma is a well-accepted phenomenon supported by more than 20 years of research, yet the body of research on the positive impact, known as vicarious post-traumatic growth, is relatively small. Based on a metasynthesis of qualitative peer-reviewed vicarious trauma studies, Cohen and Collens propose a model of the co-occurrence of vicarious trauma and vicarious post-traumatic growth. This model was examined through a qualitative study involving 11 interviews with supervisors of refugee trauma counsellors working in Forum of Australian Services for Survivors of Torture and Trauma (FASSTT) member agencies. This research project both reviewed the model from the perspective of experienced supervisors and illuminated what occurred within the supervision process to manage vicarious trauma and encourage vicarious post-traumatic growth. While the research project affirmed aspects of the model, the failure of the model to consider socio-political factors limited its applicability to FASSTT agencies.IMPLICATIONS
FASSTT clinical supervisors engage in supervision in a manner that may assist counsellors to process how their clients’ trauma disclosures impact on their levels of stress and change their perception of self, their role, and their worldview.
Including recognition of the influence of the socio-political context of refugee trauma and trauma recovery may be an important additional component of supervision practice.
98.
Determining and assessing the requisite skills of information technology (IT) personnel have become critical as the value of IT has risen in modern organizations. In addition to technical skills traditionally expected of IT personnel, softer skills like managerial, business, and interpersonal skills have been increasingly cited in previous studies as mandatory for these employees. This paper uses a typology of IT personnel skills—technology management skills, business functional skills, interpersonal skills, and technical skills—and investigates their relationships to two information systems (IS) success variables, IS infrastructure flexibility and the competitive advantage provided by IS. The study investigates these relationships using the perceptions of chief information officers (CIOs) from mostly Fortune 2000 companies. The contributions of this study are: IT personnel skills do affect IS success, technical skills are viewed as the most important skill set in affecting IS infrastructure flexibility and competitive advantage, and modularity is viewed as more valuable to competitive advantage than integration. Several explanations are offered for the lack of positive relationships between the softer IT personnel skills and the dimensions of IS success used in this study. 相似文献
99.
立足于为"十二五"规划建言献策,经由社会学结构功能论去论析为更好地理解与解决现时中国经济发展模式中的深层次矛盾与问题(如内需不足和社会分化),筑建社会学取向下以公民权利和政府责任臻善为愿景的社会建设路径是必要的,同时以经济社会学"交易秩序"理论为基本分析工具去论析实施此转变的缘由及其可能路径。 相似文献
100.
宋若涛 《河南大学学报(社会科学版)》2004,44(4):118-122
南宋理学家陈亮认为道(理)是与自然和人的社会生活密切相关的,它如同"赫日当空,处处光明.闭眼之人,开眼即是",是人们可以体察、认识的客观存在."王道"、"霸道"是贯通三代和汉、唐以下各代帝王治国的指导思想,从未被"隔断"过,"王霸并用"之论是合乎历史事实的,是治国良策."义理"、"功利"是三代、汉、唐皆有的行为准则,不是对立的,而是并存的,义要体现在利上,利也就是义,"义利双行"缺一不可.帝王治国要"爱人利物"、"生民之利"、"义利双行"才能富国强兵,人民生活安定.在"成人之道"问题上,陈亮主张做人要做一个堂堂正正(即光明磊落)、"推倒一世"、"开拓万古"的"智勇"之士,作一个实事实功的英雄豪杰.陈亮对以上三大问题的观点,是他的"明"思想最直接的体现. 相似文献