The Pacific Rim Library: A Surprising Pearl

The Pacific Rim Library (PRL) is an initiative of the Pacific Rim Digital Library Association (PRDLA). The project began in 2006 using the OAI-PMH paradigm and now holds over 300,000 records harvested from OAI data provider libraries around the Pacific. PRL's goal is to enable the sharing of digital collections amongst PRDLA members and the world, but greater unexpected benefits have been discovered. Through mirroring their metadata, PRL increases the chance that their data will be discovered in Google and other general search engines. With its many disparate collections, PRL is not a repository for traditional information discovery and retrieval. Initially users will bounce from a Google hit to the PRL metadata record in Hong Kong and then begin an intensive search on the original site which hosts the full digital object, in Vancouver, Honolulu, Wuhan, Singapore, or other PRDLA member location.     

中国城镇家庭收入增长益贫性形成机制研究

 借助社会福利函数对益贫式增长测度的可分解性,结合中国健康与营养调查（CHNS）提供的家庭就业率、劳动参与率、劳动报酬率、劳动时间等微观数据,追溯居民收入形成的劳动力市场特征要素,将居民收入和各劳动力市场特征的效用性、公平性与增长的损益相结合,应用要素分解模型阐释中国新世纪以来城镇家庭收入增长的益贫性及其形成机制,由此得到更具针对性的收入益贫式增长政策启示。     

我国行业分类与国际标准行业分类的比较研究

 本文通过对我国行业分类和国际标准行业分类两项分类标准最新版本的比较,对两项分类的基本构成、应用原则、门类和大类的条目结构以及对照转换等方面的情况进行了比较分析研究。详细解析了在若干行业领域中,二者存在典型差异的情况。最后,对我国的行业分类的科学性和国际可比性做出了分析评价,对如何进一步提升分类水平提出了改进意见,另外还提出了未来修订的思路和方法等建议。     

Estimation of the association for bivariate doubly censored data

We study the problem of estimating the association between two related survival variables when they follow a copula model and the bivariate doubly censored data is available. A two-stage estimation procedure is proposed and the asymptotic properties of the proposed estimator are established. Simulation studies are conducted to investigate the finite sample properties of the proposed estimate.     

Market Models and Heteroscedasticity of Residual Security Returns

Bickel's tests provide attractive robust alternatives to traditional tests of heteroscedasticity. NYSE securities have homoscedastic residuals once nonnormality of security returns is allowed. Some portfolio designs may generate some heteroscedastic residuals, but this heteroscedasticity is reduced by the Kraus-Litzenberger quadratic market model. This result suggests a misspecification in the traditional market model.     

Forecasting Accuracy of Alternative Techniques: A Comparison of U.S. Macroeconomic Forecasts

This article introduces and discusses a new measure of the relative economic affluence (REA) between income distributions with different means. The REA measure D is applied to the U.S. white and black household income distributions of 1967 and 1979. The measure D shows that the REA of the white households with respect to the black households decreased from 1967 to 1979. This conclusion contrasts with those obtained by applications of distance or quasi-distance functions. It is shown in this study that REA measures and distance functions address different and relevant issues. An REA measure deals with the relation “more affluent than” and defines a partial strict ordering over the set of pairs of income distributions—that is, the relation is asymmetric and transitive—whereas a distance function accounts for the dissimilarity between distributions without imposing an ordering relation and hence fulfills the symmetry property.     

Spatial Clustering Tests Based on the Domination Number of a New Random Digraph Family

We use the domination number of a parametrized random digraph family called proportional-edge proximity catch digraphs (PCDs) for testing multivariate spatial point patterns. This digraph family is based on relative positions of data points from various classes. We extend the results on the distribution of the domination number of proportional-edge PCDs, and use the domination number as a statistic for testing segregation and association against complete spatial randomness. We demonstrate that the domination number of the PCD has binomial distribution when size of one class is fixed while the size of the other (whose points constitute the vertices of the digraph) tends to infinity and has asymptotic normality when sizes of both classes tend to infinity. We evaluate the finite sample performance of the test by Monte Carlo simulations and prove the consistency of the test under the alternatives. We find the optimal parameters for testing each of the segregation and association alternatives. Furthermore, the methodology discussed in this article is valid for data in higher dimensions also.     

Two-Step Estimation of Incomplete Information Social Interaction Models With Sample Selection

ABSTRACT

This article considers linear social interaction models under incomplete information that allow for missing outcome data due to sample selection. For model estimation, assuming that each individual forms his/her belief about the other members’ outcomes based on rational expectations, we propose a two-step series nonlinear least squares estimator. Both the consistency and asymptotic normality of the estimator are established. As an empirical illustration, we apply the proposed model and method to National Longitudinal Study of Adolescent Health (Add Health) data to examine the impacts of friendship interactions on adolescents’ academic achievements. We provide empirical evidence that the interaction effects are important determinants of grade point average and that controlling for sample selection bias has certain impacts on the estimation results. Supplementary materials for this article are available online.     

Communicating intersectionality through creative claims making: the queer undocumented immigrant project

ABSTRACT

Social movements confronting overlapping inequalities face the unique challenge of elucidating the heretofore invisible experiences of those whose identities lie at the intersection of existing movements. Social media platforms provide a direct outlet for intersectional social movements to make political claims visually by illuminating these complexities creatively with discursive resources such as symbols, text, and narratives. Using content analysis of images posted to the organization’s Facebook, we examine how lesbian, gay, bisexual, transgender, and queer (LGBTQ) immigration activists – as embodied by the Queer Undocumented Immigrant Project (QUIP) – attempt to communicate intersectionality online. Images posted by QUIP demonstrate how the existing ideas and values of separate established immigrant and LGBTQ movements can be reformulated and repackaged. However, the available discursive resources may compartmentalize identities, which then requires movements to generate new symbols, text, and narratives. By leveraging extant discursive resources and innovating new expressions, activists aim to communicate intersectional experiences and unite multiple struggles.     

Gender,Migration and Place of Qualification of Doctors in the UK: Perceptions of Inequality,Morale and Career Aspiration

This article draws on a large British Medical Association (BMA) survey which allows the comparison of doctors who qualified in the UK with International Medical Graduates (IMG) who qualified overseas. It does this with respect to inequality, morale and career aspiration. The paper argues that the human-capital protection of qualifications, profession and status is not sufficient to equal the experiences of migrant doctors with those of doctors who qualified in the UK. Moreover, the article provides a gendered analysis which demonstrates clear differences between women and men and shows that place of qualification intensifies the gendered experience of a medical career. Drawing on intersectional insights shows that women IMGs are the most disadvantaged despite the apparent protection of high human capital.