Age,religious beliefs,and sexual attitudes

Age effects on sexual attitudes were examined using the Hendrick and Hendrick (1987a) Sexual Attitude Scale. The study was cross-sectional, including people from various age groups, from young adults to older adults. The religious beliefs variable, which covaries substantially both with age and sexual attitudes, was controlled. Three main questions guided the study: (a) Is the four-factor structure (Permissiveness, Instrumentality, Communion, and Sexual Practices) previously identified in a sample of young students able to accurately account for data gathered over a full range of adult ages, (b) are older adults much less permissive and less instrumentalist than young people, and (c) to what extent are believers less permissive and instrumentalist than young people when age is taken into account? Factor analyses showed that at least five correlated factors were needed to account for the data; the fourth factor, Sexual Practices, divided itself into two distinct factors: Pleasure and Responsibility. Older adults and believers were shown to be less permissive than young people and nonbelievers, and this result held regardless of the participants educational level. As regards to instrumentality, however, the pattern of differences was extremely complex.     

论闻一多文艺思想的嬗变

闻一多在其早期受西方济慈等人的影响 ,认为“以美为艺术之核心” ,主张“纯艺术的艺术”并“纳诗于艺术之轨” ,坚持“做”诗并倡导诗歌的“三美”。然而随着那“不是混着好玩”岁月的流逝并亲身体验“生活的严重”后 ,他转而重视诗的社会价值并彻底摒弃了“唯美主义”的价值取向而站在人民的立场上呼唤“时代的鼓手”。文艺观由“艺术为艺术”变为“艺术为人生” ,从誓做“艺术的忠臣”到成为“人民的忠臣” ,我们在其文艺思想的嬗变过程中 ,看到了社会存在对社会意识的决定作用。     

Social dynamics of the multicultural classroom

Instruction and learning are socially determined activities, where social forces such as classroom atmosphere, social feelings, cultural sentiments, prejudice and stereotyping, interpersonal relations and expectations, as well as the reflection of social reality in subject matter all have a significant influence on the effectiveness of teaching and learning. The effective "multicultural" teacher has to be concerned about each individual student, and also be sensitive to the group and cultural affiliations of each of his or her students. Intercultural relations in the classroom may be a source of knowledge and mutual enrichment between culturally diverse learners if managed proactively by teachers. Frustration, misapprehensions and intercultural conflict are a more likely outcome if teachers do not deal with diversity in a sensitive manner.     

满铁“附属地”“除队兵”移民述论

20世纪初 ,日、俄为争夺中国东北展开了一场激烈的战争。最终 ,俄国以中国的利益为代价 ,暂时满足了日本的扩张野心 ,将俄国在中国东北南部的一切权益 ,未经中国政府同意 ,私下转让给日本。战后 ,日本在中国东北成立了“南满洲铁道株式会社”(简称满铁 )。满铁在对中国进行政治、经济侵略的同时 ,并在其“附属地”内推行“除队兵”移民侵略计划 ,以期达到壮大日本在中国东北的实力 ,抵御俄国的战略目的。但事与愿违 ,由于满铁决策者们的盲目求成 ,移民者的经营不善和厌恶农耕 ,使得满铁“附属地”的“除队兵”移民仅仅推行了 4年时间就以失败而告终     

龙眼果皮酶促褐变产物的提取、稳定性及抗氧化活性研究

为了研究龙眼果皮酶促褐变产物的最佳提取工艺、稳定性和抗氧化活性,以样品中总蒽醌含量为指标,通过单因素和正交试验法,考察乙醇的浓度、料液比、提取时间、提取温度4个因素对应用回流法提取褐变产物的影响,探讨提取龙眼果皮中酶促褐变产物的最佳工艺条件.采用分光光度法对褐变产物的稳定性和体外抗氧化活性进行了测定.结果表明,回流法提取酶促褐变产物最佳工艺条件为:乙醇浓度为70％,提取时间为8h,料液比为1∶2,提取温度为40℃.在试验温度范围内,酶促褐变产物比较稳定;但对光照比较敏感,尤其是在紫外光下稳定性较差;在酸性条件下的稳定性比在碱性和中性条件下好;在4种不同种类添加剂影响下,其稳定性均变差.体外抗氧化试验结果表明,龙眼果皮总蒽醌浓度为9.55 μg/mL时,对1,1-二苯基-2-三硝基苯肼自由基(DPPH·)清除率为74.1％;浓度为4.55 μg/mL时,羟基自由基(·OH)清除率达81.6％;浓度为6.70 μg/mL时,超氧阴离子自由基(·O2-)清除率达86.1％.回流法可提取龙眼果皮中酶促褐变产物.温度对酶促褐变产物稳定性影响不明显,光照、pH、食品添加剂因素影响其稳定性.酶促褐变产物具有一定的清除DPPH·、·OH和·O2-自由基的能力.     

我国证券市场中的噪声交易研究——基于一个“机构噪声交易者—散户噪声交易者模型”的分析

本文从行为金融理论发展的大背景出发,以噪声交易作为研究主题。首先介绍了基于行为金融理论的噪声交易理论;接着简要介绍了噪声交易理论的基本模型—DSSW模型,为将其应用于我国证券市场的实证并提出一个改良模型做好理论铺垫;然后在DSSW模型的基础上,结合我国证券市场的实际情况,原创性地提出了一个我国证券市场机构噪声交易者一散户噪声交易者模型,以分析说明我国噪声交易者的生存机制及噪声交易对证券市场的影响,并得出相应的启示和政策建议。     

A linear programming duality approach to analyzing strictly nonblocking <Emphasis Type="Italic">d</Emphasis>-ary multilog networks under general crosstalk constraints

When a switching network topology is used for constructing optical cross-connects, as in the circuit switching case, no two routes are allowed to share a link. However, if two routes share too many switching elements, then crosstalk introduced at those switching elements degrades signal quality. Vaez and Lea (IEEE Trans. Commun. 48:(2)316–323, 2000) introduced a parameter c which is the maximum number of distinct switching elements a route can share with other routes in the network. This is called the general crosstalk constraint. This paper presents a new method of analyzing strictly nonblocking multi-log networks under this general crosstalk constraint using linear programming duality.     

高管集权、内部控制与会计信息质量

公司内部治理的核心之一是选择一个恰当的权力配置结构,以有利于增进公司各种制度和政策的执行效率.本文研究公司高管的权力配置结构对公司内部控制与会计信息质量之间关系的影响.采用盈余管理和财务重述衡量会计信息质量,本研究发现:(1)公司的内部控制质量与会计信息质量正相关;(2)公司内部控制对会计信息质量的提升作用受制于公司内部高管的权力配置结构.在高管权力集中的情况下,内部控制的改善对会计信息质量并没有明显的提升作用.本研究对公司内部控制制度的后续建设和实施乃至公司治理结构的改进均具有一定的启示意义.     

具有多元权值约束的鲁棒 LPM 积极投资组合

在用方差控制投资组合风险的同时,由于方差的对称性导致投资组合的收益也受到限制． 相比之下,下偏距 (lower partial moment: LPM) 由于具有只控制风险,而不限制收益的特点,在近年来倍受关注． 但在非正态假设下,LPM 无法获得良好的解析性质． 在对资产收益分布未知的假设下,通过使用最坏情形下的LPM来度量投资组合的损失,提出了具有多元权值约束的鲁棒积极投资组合问题,并获得了具有m( m=0,1,2) -阶 LPM 约束的鲁棒积极投资组合问题的解析解． 通过分析解的性质和比较问题的有效前沿,得到了许多有趣的和新颖的结果． 数值结果比较表明,鲁棒LPM模型比经典的均值－方差模型具有许多更好的性能．