R12在水平管内流动沸腾换热实验研究

本文对R12在水平管内流动沸腾换热特性作了实验研究。实验结果表明,管内流动沸腾换热与单相对流换热一样,存在热进口效应,国外早期的实验数据由于未能考虑热进口效应而偏大。实验结果还表明,水平流动沸腾周向不均匀换热主要受流动结构影响;截面平均换热系数则与质量流速、热流密度、质量干度和蒸发压力密切相关。分析实验数据证实,流动沸腾换热是由气泡产生而引起的流动充分发展核态沸腾和双相对流蒸发两部分组成的。本文的实验数据与国外已有的换热关系式能较好吻合。     

新媒体思想政治教育研究:现状、问题与出路

新媒体已经成为审视与研究思想政治教育的重要场域,处于思想政治教育理论研究与实践工作中的前沿.自21世纪初,新媒体受到思想政治教育学界的关注以来,人们对其的认识有冲击论、工具论到环境论三种观点,且形成了三种观点并存的局面,在研究中广泛运用了传播学、社会治理等理论资源.但受限于对新媒体、思想政治教育的传统认知,思想政治教育新媒体研究仍然存在着研究思维、研究视野、研究方法以及研究观点的局限.新媒体实现了媒介、信息以及互动交流前所未有的融合,其所引发的不仅是交往方式的变化,而且是意识形态传播机制的变化.进一步拓深思想政治教育新媒体研究,应结合马克思的交往理论、政治传播理论以及我国特有的政治文化传统,实现对新媒体思想政治教育意义的跨学科解读.     

论学科建设的内涵、策略与措施

学科建设的内涵主要包括学科方向的选择与确立,师资队伍建设,基地建设,科学研究,人才培养,国际合作与交流,人文环境建设等.师资队伍建设是学科建设的关键问题.分步实施,走特色化发展道路是学科建设的重要策略之一.加强学术梯队和科研团队建设是学科建设的重要措施之一.     

清代若干诗人的生卒年与相关问题

清代诗人数以十万计,其中绝大多数的生卒年都还不清楚,或者存在着各种各样的歧异.这种生卒年的歧异与缺漏,不但对诗人本身来说有必要予以解决,而且往往还牵涉到其他的一些学术问题.例如方文,叶燮,董以宁、董大伦父子,吴历,赵俞,陈琮,以及邹祗谟、魏容,他们的生卒年及相关问题都需要重新审视,甚至从头进行考证.这在清诗研究中是一项不可忽略的工作.     

论动物转基因科研试验安全监管的法律制度

动物转基因技术种类日益复杂,应用范围不断扩大,但成本和技术要求却不断降低,生物风险和安全威胁越来越大。科研试验阶段是风险防控的关键,因此需要科学而严谨的科研试验法律监管,以预防意外和不正当试验对社会及生态造成不良影响。国内可以指向转基因动物科研试验监管适用的法律规定集中于农业应用领域,不足以形成全面有效的监管。基于动物转基因技术的发展现状和趋势,需要对现有法律法规进行分析,明确科研试验监管的基本原则,以协调监管体系为核心探讨法律完善的关键问题,进而系统性地明确科研试验安全监管法律的进展趋势。     

The empirical Bayes estimators of the parameter of the Poisson distribution with a conjugate gamma prior under Stein's loss function

For the hierarchical Poisson and gamma model, we calculate the Bayes posterior estimator of the parameter of the Poisson distribution under Stein's loss function which penalizes gross overestimation and gross underestimation equally and the corresponding Posterior Expected Stein's Loss (PESL). We also obtain the Bayes posterior estimator of the parameter under the squared error loss and the corresponding PESL. Moreover, we obtain the empirical Bayes estimators of the parameter of the Poisson distribution with a conjugate gamma prior by two methods. In numerical simulations, we have illustrated: The two inequalities of the Bayes posterior estimators and the PESLs; the moment estimators and the Maximum Likelihood Estimators (MLEs) are consistent estimators of the hyperparameters; the goodness-of-fit of the model to the simulated data. The numerical results indicate that the MLEs are better than the moment estimators when estimating the hyperparameters. Finally, we exploit the attendance data on 314 high school juniors from two urban high schools to illustrate our theoretical studies.     

Enacting reflective and deliberative practices in action research

ABSTRACT

We consider action research as a form of deliberative policy analysis. This analysis explores a “reconstruction clinic” in which stakeholders and public officials engaged memories, hopes and obligations as they sought to resolve controversies over details of policy implementation. We ask how institutional design shaped participants’ reflective and deliberative progress. Reflection in action can prompt not only changes in cognitive frames, but new behavioural capacities for action. Deliberative practices can shape new relationships between parties through the work of apology, recognition, appreciation, and emergent collaboration.     

Unsettling research versus activism: how might critical disability studies disrupt traditional research boundaries?

Abstract

This article responds to the call for producing activist-oriented scholarship by engaging with theoretical and methodological approaches that explore the inclusion of women and girls with disabilities in Vietnam. We consider possibilities for connecting different forms of knowledge and activism by reflecting on research practices designed to foster social change. Specifically, we ask: how can critical disability studies be more reflexive about knowledge which privileges particular ways of knowing from the Global North? What alternative possibilities can exist to foster more inclusive and transformative knowledge that tackles systemic forms of oppressions in colonial and postcolonial contexts? Reflecting on an ongoing collaborative project in Vietnam, we argue that critical disability studies which engages with different forms of activism through critical reflections on our privileges can tackle exclusion by opening a new platform for debating social justice transnationally.     

No Mind Reading Necessary: Conducting Evidence-Based Electronic Resource Marketing and Outreach Using Marketing Research Assessment

Abstract

In her presentation entitled “No Mind Reading Necessary: Conducting Evidence-Based Electronic Resource Marketing and Outreach” at the North Carolina Serials Conference April 2019, Kate Hill discussed marketing research strategies and outreach tools used to increase online users’ access to electronic resources and primary resources. In an effort to connect users to seldom-used resources, Jackson Library collaborated with university partners to develop surveys to identify the information-seeking behavior of its users and apply the gathered marketing research to strategically plan outreach activities.     

NIMBY, CLAMP, and the Location of New Nuclear-Related Facilities: U.S. National and 11 Site-Specific Surveys

Public and political opposition have made finding locations for new nuclear power plants, waste management, and nuclear research and development facilities a challenge for the U.S. government and the nuclear industry. U.S. government-owned properties that already have nuclear-related activities and commercial nuclear power generating stations are logical locations. Several studies and utility applications to the Nuclear Regulatory Commission suggest that concentrating locations at major plants (CLAMP) has become an implicit siting policy. We surveyed 2,101 people who lived within 50 miles of 11 existing major nuclear sites and 600 who lived elsewhere in the United States. Thirty-four percent favored CLAMP for new nuclear power plants, 52% for waste management facilities, and 50% for new nuclear laboratories. College educated, relatively affluent male whites were the strongest CLAMP supporters. They disproportionately trusted those responsible for the facilities and were not worried about existing nuclear facilities or other local environmental issues. Notably, they were concerned about continuing coal use. Not surprisingly, CLAMP proponents tended to be familiar with their existing local nuclear site. In short, likely CLAMP sites have a large and politically powerful core group to support a CLAMP policy. The challenge to proponents of nuclear technologies will be to sustain this support and expand the base among those who clearly are less connected and receptive to new nearby sites.