中国古代慈善事业的发展特点

中国古代慈善事业在漫长的历史发展过程中不但逐渐形成了庞杂而丰富的思想体系,而且其慈善主体也实现了从最初单纯的国家慈善到以国家慈善为主、宗族慈善和宗教慈善为重要补充的多元化发展过程。另外,中国古代慈善事业的发展轨迹还明显具备与整个中国古代社会兴衰相表里的重要特点。     

Experimentation order with good properties for 2 k factorial designs

Randomizing the order of experimentation in a factorial design does not always achieve the desired effect of neutralizing the influence of unknown factors. In fact, with some very reasonable assumptions, an important proportion of random orders achieve the same degree of protection as that obtained by experimenting in the design matrix standard order. In addition, randomization can induce a large number of changes in factor levels and thus make experimentation expensive and difficult. De Leon et al. [Experimentation order in factorial designs with 8 or 16 runs, J. Appl. Stat. 32 (2005), pp. 297–313] proposed experimentation orders for designs with eight or 16 runs that combine an excellent level of protection against the influence of unknown factors, with the minimum number of changes in factor levels. This article presents a new methodology to obtain experimentation orders with the desired properties for designs with any number of runs.     

Language Provisions Under the Voting Rights Act: How Effective Are They?*

Objectives. As the Voting Rights Act (VRA) comes up for renewal in 2007, its effects on the political incorporation of groups other than African Americans will be of key importance in any debate. Among the questions in any such discussion will be whether the language provisions of the VRA have helped enfranchise “linguistic minorities” in the United States, or whether their effect has been largely symbolic. Second, if the Voting Rights Act has had a positive impact on the participation rates of Asian Americans and Latinos, have these effects been tilted toward first‐generation immigrants—who were not the intended beneficiaries of the Act—rather than native‐born minorities? Methods. This article looks at registration and voting data from the November 1996 and 2000 Census Current Population Supplemental Voting Surveys to explore the differential impact of the Act among immigrants and the native born, and among Latinos and Asian Americans. Results. The analysis finds evidence that the language provisions of the Voting Rights Act have significant and positive effects on the voting rates of covered linguistic minorities. Conclusions. Because the voting rates of Asian and Hispanic Americans in the United States still lag behind those of the population as a whole, the effects of the VRA with respect to these groups are important considerations as Congress weighs the Act's renewal.     

Older and Wiser: How CEOs’ Time Perspective Influences Long‐Term Investments in Environmentally Responsible Technologies

Most theories of corporate governance argue that chief executive officers (CEOs) take less risk as they near the end of their career, and therefore are less likely to make major investments. This prediction is based on decisions related to firm‐specific benefits; however, it may not be generalizable to decisions that involve broad societal goals. In terms of societal investments, CEOs with a longer time perspective may be more likely, rather than less likely, to invest. In this paper, we argue that a CEO's future time perspective is fostered by shorter career horizons, longer tenures, higher organizational ownership and less short‐term compensation. We test these hypotheses on 150 observations from the US investor‐owned electric power generation sector over a three‐year unbalanced sample (64.3% of the population). We applied random‐effects generalized least squares (GLS) estimations to test our hypotheses, and found support for three out of four hypothesized relationships.     

Experimentation order in factorial designs: new findings

Under some very reasonable hypotheses, it becomes evident that randomizing the run order of a factorial experiment does not always neutralize the effect of undesirable factors. Yet, these factors do have an influence on the response, depending on the order in which the experiments are conducted. On the other hand, changing the factor levels is many times costly; therefore it is not reasonable to leave to chance the number of changes necessary. For this reason, run orders that offer the minimum number of factor level changes and at the same time minimize the possible influence of undesirable factors on the experimentation have been sought. Sequences which are known to produce the desired properties in designs with 8 and 16 experiments can be found in the literature. In this paper, we provide the best possible sequences for designs with 32 experiments, as well as sequences that offer excellent properties for designs with 64 and 128 experiments. The method used to find them is based on a mixture of algorithmic searches and an augmentation of smaller designs.     

Predicting probabilities for the 2010 FIFA World Cup games using a Poisson-Gamma model

In this paper, we provide probabilistic predictions for soccer games of the 2010 FIFA World Cup modelling the number of goals scored in a game by each team. We use a Poisson distribution for the number of goals for each team in a game, where the scoring rate is considered unknown. We use a Gamma distribution for the scoring rate and the Gamma parameters are chosen using historical data and difference among teams defined by a strength factor for each team. The strength factor is a measure of discrimination among the national teams obtained from their memberships to fuzzy clusters. The clusters are obtained with the use of the Fuzzy C-means algorithm applied to a vector of variables, most of them available on the official FIFA website. Static and dynamic models were used to predict the World Cup outcomes and the performance of our predictions was evaluated using two comparison methods.     

Greenspace sites conserve taxonomic and functional diversity of dung beetles in an urbanized landscape in the Brazilian Cerrado

Urban Ecosystems - Urbanization transforms natural ecosystems, creating an environmental mosaic, characterized by native vegetation sites mixed with constructed sites. In this study, we compared...     

The Influence of Stakeholders on the Environmental Strategy of Service Firms: The Moderating Effects of Complexity,Uncertainty and Munificence*

Drawing on the resource‐based view of the firm, we examine how complexity, uncertainty and munificence in the general business environment moderate the association between a firm's stakeholder integration capability and its environmental strategy. Our data were drawn from 134 ski resorts in 12 countries in western Europe and North America. Our study finds that (1) an organizational capability of stakeholder integration is associated with a service firm's adoption of a proactive environmental strategy; (2) an uncertain business environment has a direct positive influence and a complex business environment has a direct negative influence on a firm's environmental strategy; and (3) complexity has a negative moderating influence on the relationship between a firm's stakeholder integration capability and its environmental strategy.