电动汽车技术转移网络结构及其社会资本

技术转移网络的整体结构、个体特征, 以及群体成员之间的联系, 对该网络的持续发展具有重要的影响。基于社会网络分析的视角, 利用实证数据来研究电动汽车技术转移网络的属性特征, 以及由于网络属性特征所形成的社会资本。首先识别出某个时间段的电动汽车技术转移组织和节点, 据此利用UCINET分析软件构建了电动汽车技术转移网络, 并从网络个体属性和网络整体属性两个层面, 对电动汽车技术转移网络进行分析。具体包括基于中心性和中介性的网络个体属性分析, 基于小世界效应和小团体的网络整体属性分析。通过研究, 得出电动汽车技术转移网络的结构, 并进一步判断转移网络中的意见领袖及其存在的社会资本, 从而为电动汽车技术转移网络的管理与促进提供一定的依据。     

少数民族大学生外语学习中的母语迁移及其教学意义

母语迁移是外语学习过程中的一种常见现象。本文在强调母语迁移的必然性的同时，着重从母语的正向迁移分析其表现并探索在外语教学中如何促成对母语正迁移作用的利用，最终提高教学效果。     

电液伺服客车铺椅试验系统建模

对电液伺服客车铺椅试验系统主机部分进行了测绘，建立了主机部分的力学模型，列出了各联系部件的拉氏方程组，在此基础上，建立了整个试验系统的传递函数模型。     

所有权性质、政治关联与股权转让溢价

本文以2004—2006年间发生的我国上市公司股权协议转让事件为样本,研究所有权性质、政治关联对股权转让溢价的影响。研究发现,国有股权的协议转让溢价显著高于民营企业股权的转让溢价。这说明,由于各级政府和监管部门对国有股权监管力度较大,以及国有股权受关注较多,使得国有股权在协议转让过程中会出现较明显的溢价。研究还发现,无论国有股权还是民营企业股权,协议转让溢价与公司的政治关联均负相关,这表明政治关联的存在,不仅会影响公司国有股权的运作,还可能影响民营股权的价值。     

Identification of seasonal arima models using a filtering method

This paper proposes an identification method of ARIMA models for seasonal time series using an intermediary model and a filtering method. This method is found to be useful when conventional methods, such as using sample ACF and PACF, fail to reveal a clear-cut model. This filtering identification method is also found to be particularly effective when a seasonal time series is subjected to calendar variations, moving-holiday effects, and interventions.     

Identifying rational distributed lag models using a joint test applied to the corner table

Often a distributed lag response pattern can be usefully represented in rational polynomial form. When the impulse response function decays, the corner table may be useful for model identification if appropriate statistical tests may be done. One or more joint tests are called for since use of the corner table involves studying groups of its elements. We consider an asymptotic x2 statistic that permits joint tests. We report simulation results showing that the distribution of this statistic follows the x ² distribution, for certain sample sizes and degrees of freedom, well enough to be useful in practice. With two data sets we illustrate how this statistic can be a useful aid when using the corner table.     

Transfer interest: measuring interest in training content and interest in training transfer

ABSTRACT

Motivational influences are important predictors of training effectiveness and transfer of training to the workplace. The present study introduces the Transfer Interest Questionnaire (TIQ) to measure trainee interest. Grounded in the person-object theory of interest, the construct encompasses two dimensions: interest in training content and interest in training transfer. The results of exploratory factor analyses of questionnaire data from 203 trainees provided strong support for the proposed scales. Based on the perspective of age-related motivational maintenance, socioemotional selectivity theory, the gender-similarities hypothesis, and research on training motivation and motivation to transfer, a series of moderator analyses tested the effects of six trainee and training-design characteristics: trainees’ age and gender, work experience, number of semesters completed, training course’s content area, and voluntary vs. mandatory training participation. Furthermore, based on social cognitive theory, the theory of planned behavior, and the expectancy-value model of achievement motivation, the study tested the TIQ scales’ associations with utility value, self-efficacy, normative beliefs, control beliefs, and transfer intentions. Implications for theorizing the role of interest in transfer of learning, screening training participants’ interest profiles in training evaluations, and future research directions on the role of interest in adult education, corporate training, and human resource development are discussed.     

Exploring the experiences and dynamics of an unconditional cash transfer for low-income mothers: A mixed-methods study

ABSTRACT

Little is understood about how an unconditional cash transfer might operate and affect behavior among low-income parents of infants in the United States. We investigate these questions using data from a random-assignment pilot study (N?=?30) in which unconditional cash transfers were distributed monthly on debit cards to two groups of low-income parents in New York City during the first 12 months of their newborns’ lives. Mothers were randomized to receive either $100 per month or $20 per month. Mothers distinguished spending the cash transfer on essentials vs. extras, such as going out to dinner with family. The monthly cash transfer “tided them over,” even at the lower amount of $20, especially when income from other sources ran short at the end of the month. Some mothers reported saving money for unexpected expenses.     

土壤源热泵系统的应用与经济性分析

介绍了土壤源热泵的工作原理,根据工程周围的环境,地质条件,对抚顺市某垂直埋管式地源热泵系统工程的实例进行了分析。并将垂直埋管式地源热泵空调系统与燃油锅炉+冷水机组空调系统进行了经济分析比较。结果表明,土壤源热泵系统初投资高出燃油锅炉+冷水机组空调系统约4倍,而土壤源热泵系统要比燃油锅炉+冷水机组空调系统节省约63%的全年运行费用,其中夏季节省约21.5%的运行费用,冬季节省运行费用较大约为67.9%。土壤源热泵系统初投资回收期短,经济可行性好。     

Examination of tools associated with the evaluation of knowledge uptake and utilization: A scoping review

Knowledge transfer and exchange (KTE) has become an integral part of organizational practice. Evaluation of KTE, as well as knowledge products generated through this process, is important for understanding the effectiveness of KTE strategies. This scoping review aimed to identify tools and frameworks used to evaluate knowledge uptake and utilization (KUU).The search strategy included review of PubMed and Scopus databases, hand searching of relevant journals, and citation tracing. Over 6500 abstracts were screened; 292 full-text articles were shortlisted by two reviewers.Seventy-two articles described tools for evaluating KUU. A total of 23 tools could be generally applied to knowledge products/processes used in different sectors; 36 evaluation tools were designed for specific knowledge products (i.e., websites); 9 tools were discipline-specific (i.e., medical field), and four articles described evaluations of knowledge products/processes using alternative methods such as Google Analytics or qualitative methods. The majority of tools (n = 40, 56 %) focused on usability of a knowledge product or process.This scoping review identified various tools being used to assess the effectiveness and impact of KTE processes/products, however, the measures were as varied as the projects, and were often not designed to evaluate KTE in particular.