低热硅酸盐水泥在特高拱坝中的应用

针对中热硅酸盐水泥在水化过程中释放的热量相对较多,难以满足特高拱坝温控防裂要求的问题,本文从研究低热硅酸盐水泥性能的角度出发,结合其在等特高拱坝中的应用情况,得出:相比于中热硅酸盐水泥,低热硅酸盐水泥在水化过程中释放的热量相对较小,有利于控制混凝土最高温度和温升速率,低热硅酸盐水泥的综合抗裂性能更好.目前,在溪洛渡、白鹤滩等特高拱坝应用低热硅酸盐水泥后并未发现任何裂缝,为在其他300级特高拱坝建设中使用低热硅酸盐水泥提供依据.     

Exploring sources and outcomes of trust and commitment to nonprofit organizations: The case of Amnesty International Portugal

The interactions between customers and organizations have been regarded as a core aspect in cocreating and developing new products and practices. The current study explores these interactions in the context of citizens and nonprofit organizations. The study comprises two parts: (a) a qualitative approach using interviews and the analysis of social networks to better understand the organization's social media marketing practices and corresponding outcomes and (b) a quantitative approach to analyze antecedents and outcomes of trust and being committed to participate in a nonprofit organization such as Amnesty International. From the qualitative approach, the findings highlight that Amnesty International uses social media (Facebook) to share information, and citizens tend to consider sharing posts, but they do not express new ideas or interact with the organization. These findings contribute to structure the model analyzed in the second stage of the research. Regarding the qualitative approach, the results show that organizational credibility is the most significant driver of trust followed by communicative ability. Affectively commitment to participation and relationship perception act as outcomes of overall commitment.     

The equity impacts of bus rapid transit: A review of the evidence and implications for sustainable transport

The paper offers an analysis of empirical evidence on the equity impacts of operational Bus Rapid Transit (BRT) systems in the Global South. The focus is on vertical equity, i.e. whether BRT systems achieve progressive benefits for poorer segments of the population. Findings from Africa, Asia, and Latin America all suggest that BRT does offer significant benefits to low-income groups, in terms of travel time and cost savings, access enhancement, and safety and health benefits. However benefits are often skewed toward medium-income users and thus less progressive than they might be. Two primary reasons for this are insufficient spatial coverage and inappropriate fare policies. While many features of BRT potentially allow it to deliver pro-poor outcomes, such outcomes only materialize if BRT implementers pay specific and sustained attention to equity. The paper identifies key issues that need to be addressed to steer BRT implementation toward more socially sustainable outcomes—including better integration with other transit, paratransit, and nonmotorized transport services, and with the housing sector.     

“济南就是我的家”——济南外商服务月侧记

5月下甸,又是一个烈日炎炎的夏日,杰克·史密斯先生按照惯例早早就起了床。但与平日不同的是,作为公司行政总监的他并没有直接去自己的办公室开始一天的工作,而是手拿一份查体表来到了济南市中医院,成为济南市第二届外商服务月活动中的首项内容“为济南市外企员工查体活动”的第一批受益者。在经过非常细致的心、脑、血液等项目的     

诚实守信是构建和谐社会的前提--中国社会信任危机成因分析

诚实守信是构建和谐社会的前提.信任危机是当代中国构建和谐社会的最大障碍,其产生于社会的转型变革,形成于社会制度性体制的缺失,加深于人的存在危机.而消除的唯一途径只能是积极地构建一种新型的社会信任保障制度体制,以强化人们对制度性承诺的信任理念意识,为构建和谐社会创造条件.     

新巴塞尔协议与我国的银行风险管理

新巴塞尔协议代表了国际银行业风险管理的发展方向,已经成为世界银行业风险管理的国际准则。文章分析了巴塞尔协议的制度变迁,结合新巴塞尔协议的基本框架,分析了新巴塞尔协议对我国的影响,提出了新巴塞尔协议下我国银行风险管理的制度选择原则。     

Intermediate Inequality and Welfare: The Case of Spain, 1980–81 to 1990–91

The 1990–91 household expenditures distribution in Spain dominates, in the relative ("rightist") Lorenz sense, the 1980–81 distribution, but the latter dominates the former in the absolute ("leftist") Lorenz sense. This situation constitutes a textbook case for intermediate or "centrist" notions of inequality and social welfare. This paper presents the first empirical application of this sort, using the intermediate inequality concept introduced in Del Río and Ruiz-Castillo (2000). The data reveal that there is a decrease in household expenditures inequality for a relatively small set of centrist attitudes.     

The “swing of the pendulum” from public to market support for science and technology: Is the U.S. leading the way?

The structure and financing of science and technology activities are undergoing a slow, but profound, change. This change can be briefly characterized as a shift from relying and supporting public science to a stronger emphasis on “market-based” incentives for science and technology. In this paper we analyze this shift in a historical perspective, discussing both the theoretical explanations and the empirical trends of the ongoing change. While we do not claim to provide a comprehensive and exhaustive identification of the causes of this shift, we argue that it is largely driven by the perception of a shift of the U.S. policy towards market-based, rather than publicly supported, incentives for science and technology. This, in turn—given the strong economic performance of the United States over the 1990s—has influenced policies in most OECD countries, especially in Europe.We conclude by analyzing the evolution of research in U.S. higher education and find two major trends: an increasing diversity in the number of institutions of different types other than universities and a steady and continuous public funding of the leading U.S. universities. This has allowed the construction of an infrastructure now used largely by the private sector, but it also noted that the United States has not compromised public support for core areas or in those fields in which there is a clear perception that market incentives are not sufficient for meeting the strategic targets of the U.S. policy. The implication is that there is a considerable policy diversity in the U.S. practice and that all aspects of this diversity should be considered when using the United States as a reference.