VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This study investigates public reactions to cross-sectoral partnership communication from a nonprofit’s perspective.... 相似文献
In a multinomial model, the sample space is partitioned into a disjoint union of cells. The partition is usually immutable during sampling of the cell counts. In this paper, we extend the multinomial model to the incomplete multinomial model by relaxing the constant partition assumption to allow the cells to be variable and the counts collected from non-disjoint cells to be modeled in an integrated manner for inference on the common underlying probability. The incomplete multinomial likelihood is parameterized by the complete-cell probabilities from the most refined partition. Its sufficient statistics include the variable-cell formation observed as an indicator matrix and all cell counts. With externally imposed structures on the cell formation process, it reduces to special models including the Bradley–Terry model, the Plackett–Luce model, etc. Since the conventional method, which solves for the zeros of the score functions, is unfruitful, we develop a new approach to establishing a simpler set of estimating equations to obtain the maximum likelihood estimate (MLE), which seeks the simultaneous maximization of all multiplicative components of the likelihood by fitting each component into an inequality. As a consequence, our estimation amounts to solving a system of the equality attainment conditions to the inequalities. The resultant MLE equations are simple and immediately invite a fixed-point iteration algorithm for solution, which is referred to as the weaver algorithm. The weaver algorithm is short and amenable to parallel implementation. We also derive the asymptotic covariance of the MLE, verify main results with simulations, and compare the weaver algorithm with an MM/EM algorithm based on fitting a Plackett–Luce model to a benchmark data set. 相似文献
The nature of culture and its place in foreign-language teaching (FLT) have been explored at considerable length in Western scholarly literature. These topics have also received the attention of FLT scholars in China, which, with its vast educational system and increasing involvement on the international stage, has the potential to provide an instructive contribution to the debate. The Chinese literature is, however, largely unknown outside the Mandarin-speaking world. We therefore conducted an extensive survey of the relevant literature in China, from its inception in 1980 through 2014. Our aim is to provide a relatively comprehensive overview of the main themes and research perspectives, and the development and current state of culture teaching and intercultural communication studies in that country. This paper presents the main findings of that survey, against the background of the history of Chinese EFL syllabi.
The survey indicates that culture is principally perceived from an anthropological or sociological perspective as the way of life. Culture learning is predominantly viewed as static knowledge of products, practices and perspectives rather than a dynamic process of meaning making. There has been a gradual transition in pedagogical theory and practice from the transmission of knowledge about culture and cultures to the development of intercultural communicative competence. Some innovative and empirically based ideas have been proposed, but our findings suggest that the question of culture teaching in FLT has not yet been explored in a thorough-going and systematic manner. 相似文献
Molecular dynamic computer simulation is an essential tool in materials science to study atomic properties of materials in extreme environments and guide development of new materials. We propose a statistical analysis to emulate simulation output with the ultimate goal of efficiently approximating the computationally intensive simulation. We compare several spatial regression approaches including conditional autoregression (CAR), discrete wavelets transform (DWT), and principle components analysis (PCA). The methods are applied to simulation of copper atoms with twin wall and dislocation loop defects, under varying tilt tension angles. We find that CAR and DWT yield accurate results but fail to capture extreme defects, yet PCA better captures defect structure. 相似文献
The present cross‐temporal meta‐analysis involving 68 studies (n = 35,499) found that Chinese adolescents' scores on the Rosenberg Self‐Esteem Scale decreased substantially from 1996 to 2009. The decline of self‐esteem across birth cohorts was associated with the slide of social connection level of Chinese adolescents. Correlations between self‐esteem and corresponding social indicators like the floating population and divorce rate were significant. Analysis on self‐esteem age differences showed that self‐esteem development in China was different from Western results: self‐esteem scores followed a roughly increasing trend from Grade 7 through Grade 12 with double dip points at Grades 7 and 11. 相似文献
The purpose of this article is to present a comprehensive 25-year review of the incorporation of levels of analysis into conceptual and empirical leadership research published within Leadership Quarterly throughout its history. We assessed the population of Leadership Quarterly's research (790 research articles) on four key levels of analysis-based issues: (1) explicit statement of the focal level(s) of analysis; (2) appropriate measurement given level of constructs; (3) use of a multi-level data analysis technique; and, (4) alignment of theory and data. Prior reviews regarding levels of analysis incorporation into leadership research have been limited to major research domains. Results revealed that while both conceptual and empirical articles only explicitly state the focal level of analysis in approximately one-third of the articles, appropriate levels-based measurement and alignment between theory and data are relatively strong areas of achievement for the articles within Leadership Quarterly. Multi-level data analysis techniques are used in less than one-fifth of all articles. Although there is room for improvement, there is evidence that Leadership Quarterly is a premier outlet for levels-based leadership research. Given the increasing complexity of organizational science with regard to groups, teams and collectives, Leadership Quarterly has an opportunity to model for organizational research on how to build and test complicated multi-level theories and models. 相似文献
Marketers have traditionally studied diffusionof innovation with a primary focus on theindividual consumer as a unit of analysis, themajor types of findings being characteristicsof adopter categories and opinion leadership. We propose that this perspective is notadequate from a macromarketing perspective, inwhich the goals are to set public policy forsocietal good or to create an environment whichenables the diffusion of an innovation in a waythat no single marketer could do alone. Insetting public policy which can enable (orinhibit) diffusion of innovation for societalgood, a system composed of a mass socialinfrastructure, a competitive infrastructure,and a technical infrastructure should beconsidered. 相似文献
The population of Henan Province is 72,850,000, 92% of whom live in villages. From July 12 to August 11, 1981, a fertility survey was taken of 20 communes and 31 work brigades in the counties of Fugou, Shancai, and Dengfeng, in which 38,168 people and 5700 fertility registration forms were studied. In 1980, 15% of the 3 counties' population were women aged 18-49, 80% of whom were married. The birth rate was 134.56/1000, of which the rate for married women was 172.36/1000. A random sampling from Shancai of 18-49 year old women showed an average of 2.3 children per couple. The factors influencing rural fertility are economic, social, ideological, and cultural. The economic system of distribution according to work has actually encouraged population growth because in rural areas where the standard of living is low larger families with more workers have greater incomes than smaller families with fewer workers. Early marriage and early births are encouraged under this system, as evidenced by findings in Fugou County. The survey also found that in the 3 counties, virtually everyone marries, women who work tend to work in the village close to home, high illiteracy is prevalent, and traditional attitudes of favoring males over females were all factors contributing to early and frequent births. In order to lower rural birth rates, rural economy should be developed, old attitudes and habits should be changed, and literacy should be increased. 相似文献