女性主体价值的艰难找寻——李清照与朱淑真作品的文化意义

朱淑真、李清照并为宋朝文坛的两大家,其作品表现了对女性主体价值的寻找,两人的出身、经历不同,寻找的方式也就不一样,李清照是用温柔敦厚的“融入主流”方式,朱淑真是用“女性本位”的方式,特征是刚烈凄厉,催人肠断,这也是男性中心社会里人们更称道李清照的创作,对朱淑真的作品不以为然的原因。     

宪政维度的农民权利保障思考

将我国的宪政建设放置于社会主义新农村建设的大背景中,农民是很值得我们关注的权利主体。基于宪政的某些缺失,农民因身份使其无法成为真正平等的"公民",农民权利也无法平等地享受宪法、法律应当给予的充分保障。如何在宪政维度保障农民权利成为当前亟待解决的问题。     

行向、行距对小麦田间光照及产量的影响

以锦麦 2 6 9为试材进行不同行向、行距试验 ,结果表明 :通辽地区采用东西行向种植较南北行向种植群体受光好、产量高 ,适当扩大行距有利于提高单产降低成本     

Impact of mindful self-care and perceived stress on the health related quality of life among young-adult students in West Virginia

ABSTRACT

There are substantial gaps in research on Health Related Quality of Life (HRQoL) in students aged 18 and above in West Virginia. The purpose of this study is to explore the associations between mindful self-care, perceived stress, and the HRQoL in this population. We conducted a cross-sectional study between March and April 2017. We included participants who were students, aged 18 years and above, living in West Virginia and were able to answer online questions in English. Data was obtained from an online survey using a structured questionnaire, including the SF12v2®, mindful self-care scale- SHORT, and Perceived Stress Scale (PSS)-10. We applied linear regressions to determine the predictors of HRQoL (physical health and mental health) using SF12v2®. 194 participants met the inclusion criteria of the study. Mindful self-care was negatively associated with perceived stress. Better mindful self-care mediated the relationship between perceived stress and psychological well-being, controlling for gender, age, race, marital status, education level, annual household income, and chronic disease status. Perceived stress and mindful self-care were not related to the physical well-being. Better mindful self-care may safeguard against perceived stress among students aged 18 years and above. Our findings in this study recommend more mindfulness-based interventions targeted to this subpopulation to improve psychological well-being.     

Semiparametric regression of clustered current status data

This paper discusses regression analysis of clustered current status data under semiparametric additive hazards models. In particular, we consider the situation when cluster sizes can be informative about correlated failure times from the same cluster. To address the problem, we present estimating equation-based estimation procedures and establish asymptotic properties of the resulting estimates. Finite sample performance of the proposed method is assessed through an extensive simulation study, which indicates the procedure works well. The method is applied to a motivating data set from a lung tumorigenicity study.     

工业取用水监测奇异数据挖掘与重构方法

提高工业取用水监测数据质量是目前国家水资源监控能力建设的重要内容,而奇异值问题已成为影响监测数据质量的关键短板。本文在解析现阶段工业取用水监测数据奇异值主要类型基础上,以国家水资源管理系统数据库中工业取用水监测数据为样本,利用小波变换模极大值模型提取工业取用水监测数据时频变化特征,并利用傅里叶函数对其残差序列进行修正,进而运用相对误差控制方法挖掘监测数据奇异值。在此基础上,采用混沌粒子群优化的最小二乘支持向量机模型重构填补奇异值数据。研究结果表明：小波变换模极大值模型能够较好地提取工业取用水监测数据序列的时频变化特征,但是同时容易导致监测数据的信息损失,利用傅里叶函数对小波变换进行残差修正则可进一步提升取用水监测数据序列的特征提取效果;以小波变换模极大值特征序列为基础,通过相对误差控制可实现对监测数据奇异值的高效挖掘;对于挖掘出的奇异值重构填补问题,可选取混沌粒子群优化的最小二乘支持向量机模型,其重构精度要优于多项式曲线拟合等传统统计学方法和普通最小二乘支持向量机模型。上述工业取用水监测数据奇异值挖掘重构策略为现阶段国家水资源监控能力建设的推进提供了重要技术方法支持。     

运营滞后与信用担保互换下的项目投资决策模型

在项目投资面临运营滞后以及债务融资约束的情形下,基于实物期权框架构建了企业家签订信用担保互换契约的两阶段投资决策模型。运用动态规划以及均衡定价方法,给出了企业家股权及期权价值的显示表达,得到了两个阶段担保成本满足的代数方程,并进一步分析了运营滞后和信用担保下企业家的最优投资决策问题。数值结果表明：外部运营时滞会提高杠杆率,导致企业家提前投资,同时会提高企业家第一阶段债务融资的担保成本,但会降低第二阶段债务融资的担保成本;随第一阶段投资额度逐渐增大,企业家的最优投资水平呈U型变化,第一阶段债务融资时的担保成本单调递减,而第二段债务融资时的担保成本呈现倒U型;企业家两个阶段的融资缺口对项目最优投资水平、最优破产水平以及担保成本有显著影响。     

The Human Capital Model of Selection and Immigrant Economic Outcomes

This article examines the trends in the economic advantage that highly educated immigrants hold over less educated immigrants in Canada, focusing on the differences between short‐run and longer‐run outcomes. Using data from the Longitudinal Immigration Database covering the period from the 1980s to the 2000s, this study finds that the relative entry earnings advantage that higher education provides to new immigrants has decreased dramatically over the last 30 years. However, university‐educated immigrants had a much steeper earnings trajectory than immigrants with trades or a high school education. The earnings advantage among highly educated immigrants increases significantly with time spent in Canada. This pattern is observed for virtually all immigrant classes and arrival cohorts. The results suggest that short‐run economic outcomes of immigrants are not good predictors of longer‐run results, at least by educational attainment. The implications of these findings for immigration selection policy are discussed in the conclusion.     

中西人文教育和科学教育的历史嬗变及启示

中西传统教育思想对人文教育和科学教育的重视程度是不同的,其形成的原因也是多方面的.文章拟从中西对人、自然和社会关系的不同认识方面,分析比较两种教育思想观念的历史成因及其偏失,以期促进科学教育和人文教育的融合,对人的全面发展有所裨益.