决策树在高校学生就业信息中的应用

应用决策树方法对大学生就业信息进行了分析挖掘,并抽取规则知识,指出专业成绩、外语成绩、实践能力等是影响学生就业层次的主要因素.     

协同价值的实现与并购支付方式的选择

对收购活动的动机存在不同的看法,最终而言,每一项并购活动都是为了实现并购的协同价值。不同支付方式又与协同价值的分配和实现有着密切的联系。本文研究表明,在用现金进行支付的情况下,并购方股东既要承担协同价值未实现的全部损失,也能享有协同价值超额实现的全部收益。在发行固定数量股份的交易方式和发行固定价值股份的交易方式下,并购完成后市场对并购进行重新估价的结果,主要表现为买方公司股价的变动也会影响双方的利益。如果是股价上升,那么并购双方都将获益,而且往往对买方公司更为有利;如果股价下跌,那么买方公司也将承担更大的损失。这些结论为支付方式的选择和协同价值的实现提供了依据。     

Psychosocial risk factors for excessive gestational weight gain: A systematic review

BackgroundExcessive weight gain during pregnancy can have adverse health outcomes for mother and infant throughout pregnancy. However, few studies have identified the psychosocial factors that contribute to women gaining excessive weight during pregnancy.AimTo review the existing literature that explores the impact of psychosocial risk factors (psychological distress, body image dissatisfaction, social support, self-efficacy and self-esteem) on excessive gestational weight gain.MethodsA systematic review of peer-reviewed English articles using Academic Search Complete, Cumulative Index to Nursing and Allied Health Literature, MEDLINE Complete, PsycINFO, Informit, Web of Science, and Scopus was conducted. Quantitative studies that investigated psychosocial factors of excessive GWG, published between 2000 and 2014 were included. Studies investigating mothers with a low risk of mental health issues and normally-developing foetuses were eligible for inclusion. From the total of 474 articles located, 12 articles were identified as relevant and were subsequently reviewed in full.FindingsSignificant associations were found between depression, body image dissatisfaction, and social support with excessive gestational weight gain. No significant relationships were reported between anxiety, stress, self-efficacy, or self-esteem and excessive gestational weight gain.ConclusionThe relationship between psychosocial factors and weight gain in pregnancy is complex; however depression, body dissatisfaction and social support appear to have a direct relationship with excessive gestational weight gain. Further research is needed to identify how screening for, and responding to, psychosocial risk factors for excessive gestational weight gain can be successfully incorporated into current antenatal care.     

共建共享理念下增强人民获得感的路径研究

以共建共享理念引领人民增强获得感有助于增进人民福祉,维护国家长治久安,增强共产党执政权威。获得感的提出对 于我国特色社会主义建设具有重要的时代价值,但我国人民获得感目前存在物质基础尚不牢固、获得感的分配结构尚待完善、 获得感的精神建设亟需加强等问题。在共建共享理念的引领下,要构建服务型政府,为人民增强获得感提供机制保障;要推进 民生普惠,作为人民增强获得感的决胜要素;要促进基层治理能力现代化,完善人民增强获得感的网格网络;要推动公共产品 供给,打通人民获得感的“最后一公里”。     

Price Manipulation and Quasi‐Arbitrage

In an environment where trading volume affects security prices and where prices are uncertain when trades are submitted, quasi‐arbitrage is the availability of a series of trades that generate infinite expected profits with an infinite Sharpe ratio. We show that when the price impact of trades is permanent and time‐independent, only linear price‐impact functions rule out quasi‐arbitrage and thus support viable market prices. When trades have also a temporary price impact, only the permanent price impact must be linear while the temporary one can be of a more general form. We also extend the analysis to a time‐dependent framework.     

解读人类战争历史

无论是"战争"还是"和平",在人类历史长河中都只是人类生存的手段和在某一时段的存在状态,它们都不是永恒的;而是随着人们的生存利益的变化和价值判断的变化而变化的,并随着这种变化显现在人类的不同的发展时期与阶段。在物质与精神互动中,我们发现了人类灵魂的弱点,同时也看到了人类灵魂的能量,人类是可以自救的。     

中华民族共同体意识的核心要义与铸牢路径

中华民族共同体意识作为一种社会意识,是对中华民族共同体这一社会存在的反映,是对中华民族共同体形成发展过程中所处的经济生产活动、社会关系以及社会结构的反映。“中华民族共同体意识”是涉及经济交往、政治认同、文化交融的心理活动过程。其核心要义包括以下五个方面：为实现中华民族伟大复兴的共同理想和共产主义远大理想而奋斗的自强意识与使命意识;以中华民族优秀传统文化、革命文化与社会主义先进文化为共有精神家园的自豪意识与守护意识;坚持党的领导、走中国特色社会主义的道路自信、理论自信与制度自信的政治意识;坚持国家利益高于一切、维护国家主权、安全与发展利益的自尊意识与责任意识;对伟大祖国、中华民族、中华文化、中国共产党、中国特色社会主义高度认同的共同体意识。     

中国股票投资者的处置效应检验和参考价格选择

处置效应是一种比较典型的投资者非理性行为。本文在线性量价回归模型的基础上,引入Grinblatt和Han^[1]提出的资本利得突出量来检验中国股票投资者整体上是否存在处置效应。然后,使用新提出的6个参考价格与以往对股票市场研究中主要使用的两个参考价格(股票过去260周内加权平均价和过去52周内最高价)相比较,寻找更加适合处置效应研究的参考价格;同时,在选择不同的参考价格下,进一步检验投资者是否存在处置效应。研究结果表明:中国股票投资者整体上存在处置效应;并且在处置效应的研究中,新提出的参考价格——股票5周加权移动平均价明显优于以往学者提出的参考价格。因此,研究整个股票市场中投资者的处置效应时,使用该价格作为参考价格更加合理。     

先秦名实之乱的文化根源

先秦名实之乱的根源在于礼乐文化本身,它内容和形式对立统一的特点已经潜伏了名实分离的可能.礼坏乐崩和名实之乱都是礼乐文化在解体过程中的表现.名与实没有彻底分离,为中国文化留下了一个严重的社会痼疾.     

Selected Health Behaviors That Influence College Freshman Weight Change

Objective and Participants: The authors investigated the effect of physical activity (PA), fruit and vegetable intake, and alcohol use on 6-month weight change in 193 college freshmen (78.8% white, 88.2% women, 94.5% on a meal plan). Methods: The authors administered a Web-based survey in fall 2002 (baseline) and spring 2003 (follow-up). Results: There was an overall average weight gain of 2.5 lbs (p < .05), although only 57% reported weight gain (M = 7.1 lbs). Fruit and vegetable intake decreased (p = .034), alcohol use increased (p > .05), and PA was unchanged. Weight gain for students with body mass indexes (BMI) ≥25 kg/m² was nearly twice that of students with BMIs < 25 (p < .05). Students with low-frequency baseline PA were twice as likely to be overweight. Follow-up data showed that students reporting ≥ 4 sessions per week (ie, high frequency) of low-intensity PA were twice as likely to have healthy BMIs as students engaging in low- and moderate-frequency PA. Conclusions: PA interventions should target freshmen with BMIs ≥ 25.