轮机英语词汇的量化特征

运用容量为100万单词的轮机英语语料库,研究轮机英语词汇的量化特征,其中包括:轮机英语的词汇密度、零阶单词熵和复杂度、大学英语四级和六级词汇对轮机英语的单词覆盖率、HERDAN-HEAPS等数学模型对轮机英语词汇增长曲线的拟合度。     

二战后日本治理通货膨胀的经验及启示

论述了日本战后三次通货膨胀的情况,并在此基础上,对日本如何治理通货膨胀进行了分析。最后论述了中国应借鉴日本的经验,转变经济增长方式,制定合理的产业政策等来解决通货膨胀问题。     

基于Logistic生长方程—马尔可夫模型的港口投资风险测度

伴随着我国经济从高速增长逐渐向经济新常态转变,港口的发展也从高速增长阶段逐渐趋近平稳,随之而来的港口风险问题日益突出。由于港口的发展同中国经济发展相似,呈现非常明显的非线性发展特征,这样采用传统的单一模型很难刻画这一现实问题。为此,本文首次构造了Logistic生长方程—马尔可夫组合模型,通过Logistic生长方程生成马尔可夫模型所需要的状态参数,在此基础上构造风险转移概率矩阵,有效的解决了港口投资风险的测度问题。本文选取1985至2014年的样本数据进行验证,结果表明：2016年后港口投资风险会突显出来,并将持续较长一段时期,表明我国港口正处在转型升级的关键时期,需加快从外延式扩张向内涵式发展转变,从粗放式到精细化管理转变。     

Happiness of Hong Kong youth from 2000 to 2014: empirical evidence on the differential impact of socioeconomic conditions on youth versus other age groups

This paper aims to explain why Hong Kong youth have become unhappier than older people in recent years. We test in this connection six hypotheses, using random effects ordinal logistic regressions with a combined macro-micro dataset from official statistics and a longitudinal opinion survey project from 2000 to 2014. The results show that the decline in the happiness level in recent years is more significant for Hong Kong youth than for older people. We also find evidence of age heterogeneity in the impacts of both macroeconomic conditions and the housing price on happiness. GDP per capita has a weaker positive effect on youth’s happiness than it does on older people. The positive correlation between housing price and happiness is valid for older people only. Rapid economic growth and the rise in the price of housing have made older people happier than youth since the early 2010s.     

What does ‘active citizenship’ mean for Erasmus students?

Since ERASMUS (European Region Action Scheme for the Mobility of University Students) was launched there has been a constant debate about the civic significance of this mobility programme. The purpose of this article is to analyse the understanding of active citizenship by Erasmus students. In order to discover Erasmus students’ perceptions, values, beliefs and attitudes regarding the issue under discussion, original data were collected from 174 students who participated in our survey in March 2014. By applying a statistical analysis, the most and the least important criteria for being considered an active citizen have been extracted from the answers of our respondents. In addition, we studied their attitudes towards and knowledge of the European Union (EU). We found that their understanding of ‘active citizenship’ echoes with the definition of the concept provided in the research literature.     

Good work? Sustainable work and sustainable development: a critical gender perspective from the Global North

ABSTRACT

Work has just recently been recognized as an important topic in the discourse of development. But often it stays unclear how work is related to issues of gender equality, an indispensable goal of sustainable development from its start. The article explores how gender and work is addressed in three approaches to work and sustainable development, which are currently discussed in the German language literature on this topic: in the current mainstream concept of the green economy and green jobs, in alternative concepts of degrowth or postgrowth societies and in eco-feminist concepts of caring societies. The critical discussion of these approaches leads to the argument that a fundamental reassessment and reorganization of the critical society-nature relationship and consequently a new conceptualization of sustainable work is needed.     

Application of trajectories from growth curve in identification of longitudinal biomarker for the multivariate survival data

In clinical studies, the researchers measure the patients' response longitudinally. In recent studies, Mixed models are used to determine effects in the individual level. In the other hand, Henderson et al. [3,4] developed a joint likelihood function which combines likelihood functions of longitudinal biomarkers and survival times. They put random effects in the longitudinal component to determine if a longitudinal biomarker is associated with time to an event. In this paper, we deal with a longitudinal biomarker as a growth curve and extend Henderson's method to determine if a longitudinal biomarker is associated with time to an event for the multivariate survival data.     

Am I a leader? Examining leader identity development over time

The extent to which someone thinks of him- or herself as a leader (i.e., leader identity) is subject to change in a dynamic manner because of experience and structured intervention, but is rarely studied as such. In this study, we map the trajectories of leader identity development over a course of a seven-week leader development program. Drawing upon identity theory (Kegan, 1983) and self-perception theory (Bem, 1972), we propose that changes in self-perceived leadership skills are associated with changes in leader identity. Using latent growth curve modeling and latent change score analyses as our primary analytical approaches, we analyzed longitudinal data across seven measurement points (N = 98). We find leader identity to develop in a J-shaped pattern. As hypothesized, we find that these changes in leader identity are associated with, and potentially shaped by, changes in leadership skills across time.     

Sharp Threshold Detection Based on Sup-Norm Error Rates in High-Dimensional Models

We propose a new estimator, the thresholded scaled Lasso, in high-dimensional threshold regressions. First, we establish an upper bound on the ?_∞ estimation error of the scaled Lasso estimator of Lee, Seo, and Shin. This is a nontrivial task as the literature on high-dimensional models has focused almost exclusively on ?₁ and ?₂ estimation errors. We show that this sup-norm bound can be used to distinguish between zero and nonzero coefficients at a much finer scale than would have been possible using classical oracle inequalities. Thus, our sup-norm bound is tailored to consistent variable selection via thresholding. Our simulations show that thresholding the scaled Lasso yields substantial improvements in terms of variable selection. Finally, we use our estimator to shed further empirical light on the long-running debate on the relationship between the level of debt (public and private) and GDP growth. Supplementary materials for this article are available online.     

Racial Disparities in Welfare Dependence and Financial Independence: Links to Human Capital,Local Economy,and State Temporary Assistance for Needy Families Policies

This secondary data analysis examined racial disparities in associations betwen welfare dependence/financial independence and human capital, local economy, and state TANF policies. A sample of 6,737 parents was extracted from the public-use data set titled “National Longitudinal Survey of Youth.” Results showed that restrictive TANF policies reduced African Americans’ likelihood of welfare use and increased likelihood of their financial independence. Multinomial logistic results also showed that, among Hispanics, employment growth in neighboring counties promoted welfare use; whereas among Caucasians such growth promoted financial independence. County poverty increased (a) Caucasians’ likelihood of welfare use and (b) Hispanics’ likelihood of being working poor; it decreased Caucasians’ and African Americans’ likelihood of financial independence. Across ethnic groups, education reduced likelihood of welfare use and working poor status; across minority groups, education increased likelihood of financial independence, but among Caucasians it decreased such likelihood. Across ethnic groups, occupational skills hindered dependence and improved odds of employment (regardless of welfare or poverty status). This study concluded the studied TANF policies and job markets were not color-blind. Interventions this study implies include less-restrictive TANF policies, generous support services, TANF staff cultural-competence training, and antidiscrimination rules. Research investigating particular TANF policies’ and services’ effects by ethnicity might prove useful.