The Dyadic Adjustment Scale: A Reliability Generalization Meta‐Analysis

We conducted a reliability generalization meta‐analysis to examine the internal consistency of Dyadic Adjustment Scale (DAS; Spanier, 1976 ) scores across 91 published studies with 128 samples and 25,035 participants. The DAS was found to produce total and Dyadic cohesion, Consensus, and Satisfaction scores of acceptable internal consistency, although lower than those originally reported by Spanier (1976) . Reliability estimates of these scores did not differ by the sexual orientation, gender, marital status, or ethnicity of the sample. The Affective Expression subscale was found to produce scores with poor Cronbach’s alpha across studies. Reliability estimates of Affective Expression scores were highly influenced by sample characteristics. The implications of these results are discussed as they relate to the use of the DAS in research.     

城乡教师领导行为与青少年情绪适应的关系

选取城市和农村初中913名青少年为被试,采用问卷法考察城乡教师领导行为与青少年情绪适应的关系。研究发现:(1)城市青少年知觉到的教师民主、权威与放任行为均与其情绪适应存在密切关系;而农村青少年知觉到的教师放任行为与其情绪适应存在密切关系;(2)民主型教师领导模式下城乡青少年的情绪适应状况明显好于权威型和放任型教师领导模式下的适应状况;(3)城乡青少年均期望教师给予更多民主,更少权威,但城市青少年期望更多、农村青少年期望更少的放任;(4)城市青少年对教师领导行为的期望差距越大,他们的情绪适应越差,差距越低,情绪适应越好;而农村青少年对教师领导行为的期望差距大小与其情绪适应之间没有显著联系。     

基于四叉树结构的小波格型矢量量化

基于格型矢量量化克服了传统矢量量化计算和存储复杂度高的缺点,提出了一种新型四叉树结构的小波格型矢量量化算法。对小波变换系数进行视觉加权,以感知的均方误差准则取代传统均方误差。改进零树编码方法,并按照小波系数的四叉树结构和其方向性来组织矢量,对重要系数作格型矢量量化。从而较好地综合利用了小波系数在空间和频域的能量集中特性。仿真实验证明,该方法具有速度快,存储量小的优点,与文献中其他算法相比,具有较高的编码效率。     

从比较优势到竞争优势 --兼论保定市产业结构调整

从比较优势理论和竞争优势理论出发,时区域产业结构调整进行了分析研究,指出产业结构调整过程是一个发挥比较优势、打造竞争优势的过程,发挥比较优势是产业结构调整的基础,打造竞争优势是产业结构调整的战略取向.结合保定实际,论证了现阶段保定市在参与区域经济竞争中,产业结构调整的现状、问题、发展方向,并具体分析提出了构建汽车产业这一支柱产业的发展方向与对策.     

中学教师的压力与调适

中学教师在教育结构调整和改革的背景下面临着较大的压力。压力源有生活方式的变化、工作构成、工作环境、公众形象等因素 ,也和个体的压力体验有关。压力既可能是行动的动力 ,也可能是行动的障碍和阻力。压力需要适当的调整     

中国民主革命时期的政党政治整合及其启示

政治整合功能是政党的重要功能,中国共产党是在同国民党的政治整合斗争中发展起来并取得革命胜利的。政治整合不仅具有历史意义,而且也有很强的现实启示。     

韩国新一轮产业结构调整及其对我国经济结构调整的启示

20世纪90年代以来,韩国经济发展速度放慢的一个重要原因,就是产业结构调整的滞后。目前,韩国正在进行新一轮的产业结构调整,并且初见成效。研究并借鉴韩国产业结构调整的得失,对正处于经济结构调整关键时期的中国来说,大有裨益。     

亚太安全形势再审视--从美亚太军事战略调整进行的分析

冷战结束后,美一直对其全球军事战略进行缓慢调整."9.11"恐怖袭击加速了美全球军事战略调整的步伐,促使美开始了冷战后规模最大的一次全球军事战略调整.美将亚太地区作为此次军事战略调整的重点,将对亚太安全形势造成不容忽视的影响.对中国这个亚太地区大国来说,如何应对亚太新的安全形势,维护中国的国家安全,提高中国在亚太地区的国际地位,是中国战略决策者面临的崭新课题.     

Irregular Identification,Support Conditions,and Inverse Weight Estimation

In weighted moment condition models, we show a subtle link between identification and estimability that limits the practical usefulness of estimators based on these models. In particular, if it is necessary for (point) identification that the weights take arbitrarily large values, then the parameter of interest, though point identified, cannot be estimated at the regular (parametric) rate and is said to be irregularly identified. This rate depends on relative tail conditions and can be as slow in some examples as n^−1/4. This nonstandard rate of convergence can lead to numerical instability and/or large standard errors. We examine two weighted model examples: (i) the binary response model under mean restriction introduced by Lewbel (1997) and further generalized to cover endogeneity and selection, where the estimator in this class of models is weighted by the density of a special regressor, and (ii) the treatment effect model under exogenous selection (Rosenbaum and Rubin (1983)), where the resulting estimator of the average treatment effect is one that is weighted by a variant of the propensity score. Without strong relative support conditions, these models, similar to well known “identified at infinity” models, lead to estimators that converge at slower than parametric rate, since essentially, to ensure point identification, one requires some variables to take values on sets with arbitrarily small probabilities, or thin sets. For the two models above, we derive some rates of convergence and propose that one conducts inference using rate adaptive procedures that are analogous to Andrews and Schafgans (1998) for the sample selection model.     

中国农业贸易政策调整与比较优势变动研究——加入WTO十年以来

以加入WTO十年中国农业贸易政策调整为背景,利用1995～2011年数据系统测算了加入WTO十年中国农业贸易政策组合调整的分类农产品和农产品整体效果,并采用显示性比较优势指数、国内资源成本系数、有效保护率、新要素贸易条件等指标构建了中国农业比较优势变动的科学评价体系。研究结果表明加入WTO十年中国农业贸易政策限制效果显著降低,现有农业贸易政策组合可以形成合理、有效保护;不同农产品比较优势变化明显,中国农业生产贸易格局基本上遵循了比较优势原则;今后在挖掘和提升中国农业生产贸易整体的比较优势时,依据变动中的比较优势对不同种类农产品应当有不同的侧重点。