Probabilistic frontier regression models for binary type output data

This paper proposes a probabilistic frontier regression model for binary type output data in a production process setup. We consider one of the two categories of outputs as ‘selected’ category and the reduction in probability of falling in this category is attributed to the reduction in technical efficiency (TE) of the decision-making unit. An efficiency measure is proposed to determine the deviations of individual units from the probabilistic frontier. Simulation results show that the average estimated TE component is close to its true value. An application of the proposed method to the data related to the Indian public sector banking system is provided where the output variable is the indicator of level of non-performing assets. Individual TE is obtained for each of the banks under consideration. Among the public sector banks, Andhra bank is found to be the most efficient, whereas the United Bank of India is the least.     

半参数空间ZISF的估计、分类与蒙特卡罗模拟

零无效率随机前沿模型（ZISF）包含随机前沿模型和回归模型，两模型各有一定的发生概率，适用于技术无效生产单元和技术有效生产单元同时存在的情形。本文在ZISF的生产函数中引入空间效应和非参函数，并假设回归模型的发生概率为非参函数，构建了半参数空间ZISF。该模型可有效避免忽略空间效应导致的有偏且不一致估计量，也避免了线性模型的拟合不足。本文对非参函数采用B样条逼近，使用极大似然方法和JLMS法分别估计参数和技术效率。蒙特卡罗结果表明：①本文方法的估计精度和分类精度均较高。随着样本容量的增大，精度增加。②忽略空间效应或者非参数效应，估计精度和分类精度降低，文中模型有存在必要性。③忽略发生概率的非参数效应会严重降低估计和分类精度，远大于忽略生产函数的非参数效应的影响。     

语义场理论对科技术语翻译的启示从——“水资源管理”一词的英汉互译谈起

科技术语在不同语言之间的翻译是一个复杂的语义匹配过程，如何在考虑相关术语使用现状的基础上将新产生的科技术语准确翻译为其它语言是科技工作者和术语研究者关注的重要问题。以语义场理论为分析框架，通过分析以"水资源管理"及其相关术语为代表的英汉互译，结果发现：不同科技术语在同一语义场所涵盖的语义范围将会随着相关研究深化带来的术语界定细化而发生相应的动态变化；新兴科技术语的翻译要充分考虑其所在语义场其它相关科技术语的翻译先例和使用现状所带来的影响，在翻译准确性和解读便利性之间做出适当的平衡。这是造成"水资源管理"及相关术语英汉互译处理极为复杂的重要原因之一，需要科技翻译者在工作实践中多加注意。     

Remote Work in Library Technical Services: Connecting Historical Perspectives to Realities of the Developing COVID-19 Pandemic

Abstract

The concept and practice of remote work in library technical services is not new, but the scale and speed of the transition to remote work for many libraries due to the COVID-19 pandemic is unprecedented. This column provides an overview of pre-pandemic literature on remote work in library technical services and briefly examines the history, planning, case studies, technology and equity concerns, challenges, and potential benefits of remote work. Initial connections are drawn between existing literature and the impact of the pandemic on remote work, and future directions for research and discussion are offered.     

Scholarly Communications Training: Professional Development for the Next Generation of Scholars

Abstract

Many campuses are seeing increased needs for support in scholarly communications areas such as open access, research identity management, scholarship metrics, and related topics. This article discusses a professional development program that addresses scholarly communications needs for online and in-person graduate students and faculty at UNC Greensboro (UNCG), through a collaborative, interdepartmental effort that brings together librarians from the departments of Research, Outreach, and Instruction (ROI) and Technical Services. The authors provide a brief overview of the literature related to scholarly communications needs and training in academic libraries and discuss the UNCG program’s inception, modules, format, assessment, and future directions.     

技术指标能够预测商品期货价格吗? 来自中国的证据

基于移动价格平均、动量和移动交易量平均三类技术指标,研究了其对中国大宗商品期货价格的预测效果,并以基于宏观变量的预测为基准比较分析了其预测能力.主要结论如下,第一,技术指标能够在样本内和样本外检验中有效预测我国大宗商品期货价格,其预测效果显著超过已有文献中广泛使用的宏观经济指标.第二,对于不同的模型设定和数据频率,技术指标预测效果表现稳健.第三,从资产配置角度出发,基于技术指标的预测具有显著经济意义,能够显著提高资产配置效率,获得超额收益.相关结果能够为大宗商品投资及风险管理提供经验和策略支持.     

对台湾技职类大学创新教育的几点思考——以朝阳科技大学为例

随着我国经济的转型发展创新教育在大学教育中的地位被凸显出来，技职类大学的创新教育是摆在我们面前的一个实际课题。我国台湾地区高校这类教育开始比大陆早一些，在政策的制定、教师的培养、课程的设计等方面有一些经验可以借鉴，能给我们一些重要的启示。     

核威慑的四大风险及其应对

风险社会中的核威慑自身具有很大的不确定性,容易引发技术风险、信任风险、政治风险和道德风险。对立的主客思维方式、失序的国际规范、内在的逻辑矛盾以及缺失的道德责任导致了核威慑风险的产生与升级,而其中的道德责任是根本性的影响因子。面对日趋严峻的核安全形势,各国应该培植政治智慧与道德理性,强化共生意识和本体性安全,构建平等、正义的核安全合作机制,积极打造安全共同体,让参与者共享安全与和平。拥核国应该承担更大的道德责任,切实维护核不扩散体制,努力铲除核恐怖主义,稳步推进世界无核化进程。     

环境政策与企业生产技术效率——以造纸企业为例

理解环境保护与经济发展的关系是制定切实可行的环境政策的基础。在微观层面,环境政策的实施会影响污染企业的技术选择和生产效率,从而影响企业的经济绩效。这种影响制约着企业,甚至地方政府在污染控制方面的力度。该文采用造纸企业的调查数据,利用随机前沿生产函数的方法,分析了造纸企业的技术效率及其影响因素,同时在影响因素中引入COD收费率指标分析环境政策对企业效率的影响。分析结果显示,我国造纸行业在1999—2003年,在国家加大环境政策执行力度的背景下,取得了明显的效率改进,环境政策对不同类型的企业有不同的影响。这些结果为进一步改进环境政策提供了依据。     

The role of events in ICT adoption: same-sex marriage and Twitter

ICT adoption is predominantly considered as a process conditioned by social structures, social situations of adopters, and attributes and features of technologies. What is often overlooked are the cultural forces that shape adoption experiences and processes. This paper focuses on events and event narratives as vehicles through which the efficacy of culture unfolds in technological change processes. Cultural sociology has shown how influential events can be for forming public opinions and facilitating collective action. This article considers the power of one event on a much smaller scale: the passage of same-sex marriage (SSM) law in New York in June 2011 was not only significant for marriage equality in the US but also for the operating logic of the news ecosystem in which the political decision was made ? the state house in Albany. For the journalists who covered this event on the ground, the SSM decision was the catalyst to fully embrace Twitter. Years later, the event still served as an exemplar for the potentials of Twitter and as a basis of legitimacy of associated tweeting practices reporters incorporated. This contribution is based on ethnographic research at the state house in Albany, analysis of tweets and legacy news coverage published during that period, and in-depth interviews with reporters.