墙体砌块保温性能和强度的正交试验分析

采用正交试验的方法分析和研究了多因素作用下墙体砌块的保温性能和抗压强度，并使用极差分析方法对试验测试结果进行分析，得到了影响墙体砌块导热系数和抗压强度的主次因素，确定了墙体砌块的合理配比，为墙体保温砌块的设计和制备提供依据．     

Deep habits and the cyclical behaviour of equilibrium unemployment and vacancies

We extend the standard textbook search and matching model by introducing deep habits in consumption. This assumption generates amplification in the response of labour market variables to technology shocks by producing endogenous countercyclical mark-ups. The cyclical fluctuations of vacancies and unemployment in our model can replicate those observed in the US data, with labour market tightness being 20 times more volatile than consumption. Vacancies display a hump-shaped response to technology shocks and the numerical simulations generate an artificial Beveridge curve that is in line with the data. Our model preserves the assumption of fully flexible wages for new hires and the calibration is consistent with the estimated elasticity of unemployment to unemployment benefits. Finally, we show that in contrast to models with exogenous mark-up shocks, the deep habits model does not require an implausible variation in the elasticity of demand to match the volatility of labour market variables, and the cyclical properties of the mark-up are in line with empirical evidence.     

Using social networking websites as a selection tool: The role of selection process fairness and job pursuit intentions

A growing trend in the hospitality industry is openly encouraging applicants to join their social networking sites as part of their recruitment process (0080 and 0185). However, there is a dearth of studies examining how applicants perceive and react to the use of social networking websites in the recruitment and selection process. Therefore, the purpose of the current study was to examine how applicants react to the use of social networking websites as a selection tool. Using experimental methods, participants attending a career fair for hospitality jobs completed a questionnaire after reading about a hospitality company that does or does not use social networking sites in the selection process. The results showed that perceived fairness and job pursuit intentions of applicants were lower for an organization that used social networking websites as a selection tool than an organization that did not use social networking websites as a selection tool.     

大功率电子发射管的正确使用及延长其寿命的方法

大功率电子发射管广泛应用于广播电视发射设备及其他电子通信设备,文章介绍了采用冷打压老炼、灯丝电压调整、谐振匹配等技术方法延长电子管的使用寿命。     

The Productivity Effects of Worker Mobility Between Heterogeneous Firms

We analyze the effect of worker inflows on establishments’ productivity, using German data. Previous studies for other countries have found positive effects of hiring workers from superior (more productive or higher paying) firms. Ranking establishments by their median wage, we find that inflows from inferior establishments seem to increase hiring establishments’ productivity. Further empirical analyses suggest our findings are due to a positive selection of such inflows from their sending establishments. These workers might have to find a better job match in order to advance their careers, an interpretation supported by the finding that the effect is driven by workers with short tenure at their previous employer. Our findings reflect the increasingly assortative pattern of worker mobility in Germany found in a related strand of literature.     

Bias-corrected estimates of reduction of post-surgery length of stay and corresponding cost savings through the widespread national implementation of fast-tracking after liver transplantation: a quasi-experimental study

Background: Fast-tracking is an approach adopted by Mayo Clinic in Florida’s (MCF) liver transplant (LT) program, which consists of early tracheal extubation and transfer of patients to surgical ward, eliminating a stay in the intensive care unit in select patients. Since adopting this approach in 2002, MCF has successfully fast-tracked 54.3% of patients undergoing LT.

Objectives: This study evaluated the reduction in post-operative length of stay (LOS) that resulted from the fast-tracking protocol and assessed the potential cost saving in the case of nationwide implementation.

Methods: A propensity score for fast-tracking was generated based on MCF liver transplant databases during 2011–2013. Various propensity score matching algorithms were used to form control groups from the United Network of Organ Sharing Standard Analysis and Research (STAR) file that had comparable demographic characteristics and health status to the treatment group identified in MCF. Multiple regression and matching estimators were employed for evaluation of the post-surgery LOS. The algorithm generated from the analysis was also applied to the STAR data to determine the proportion of patients in the US who could potentially be candidates for fast-tracking, and the potential savings.

Results: The effect of the fast-tracking on the post-transplant LOS was estimated at approximately from 2.5 (p-value?=?0.001) to 3.2 (p-value?Conclusion: The fast-track program was found to be effective in reducing post-transplant LOS, although the reduction appeared to be less than previously reported. Nationwide implementation of fast-tracking could result in substantial cost savings without compromising the patient outcome.     

EVALUATION OF CONTINGENT REPAYMENTS IN MICROFINANCE: EVIDENCE FROM A NATURAL DISASTER IN BANGLADESH

Frequent and strictly scheduled repayments and savings in microfinance often deteriorate the liquidity of members in the face of negative shocks. Previous articles suggest the introduction of a contingent repayment system that allows such members to be rescheduled, but the unavailability of a suitable dataset makes it difficult to examine how it would actually work. This study is one of the first to evaluate the impact of this repayment system on household livelihood. In employing a unique dataset from Bangladesh, I show that rescheduling reduces the possibility of binding credit constraints and borrowing from moneylenders, and may also reduce transitory poverty. However, short‐term rescheduling has insignificant effects. Indebted members with less liquid assets are more likely to be rescheduled.     

入侵检测系统的融合模式匹配算法

运用入侵检测系统的融合模式匹配算法取得待匹配的字符串集合的公共前缀与文本匹配,若为单模式匹配则匹配结束,若为多模式匹配则将文本被分割成的字符串集中的字符串分别与模式串匹配,该融合算法对单模式匹配和多模式匹配均提高了效率,识别了正文的大小写。     

大功率压电换能器的阻抗匹配研究

本文从实际工作条件出发,讨论了大功率压电换能器的匹配问题。强调指出了换能器的等效阻R在分析换能器工作状况和匹配电路时的重要性,并从工程技术的角度对匹配电感的设计进行了分析,提出将效率作为衡量匹配电路的一个重要指标。     

浅谈网上追逃的法律困惑及前瞻

网上追逃措施在打击刑事犯罪、抓获犯罪嫌疑人、保证犯罪嫌疑人迅速及时到案发挥了越来越重要的作用,但是由于法律对"网上追逃"缺乏具体明确的规范,实践中犯罪嫌疑人的羁押、移交程序随意、混乱,容易侵害犯罪嫌疑人的合法权益。本人认为应当尽快将其纳入刑事诉讼法进行规范,细化网上追逃程序,保护犯罪嫌疑人的合法权益。