仔猪睾丸组织体外培养方法的建立

以30日龄仔猪睾丸组织块为培养对象,应用飞利普TECNAI10电子显微镜对培养前后的生精细胞类别进行了观察,对培养后的组织块进行生精细胞分化程度鉴定,建立了仔猪睾丸组织生精细胞爬片体外培养模型。培养前后电镜观察及HE染色结果显示,培养前细胞种类主要有2种:支持细胞和精原细胞,有少数几个初级精母细胞;培养第20 d的睾丸组织块HE染色观察到3个精子细胞,电镜观察到2个精子细胞。证实,在没有添加睾酮的情况下,此培养体系能够提供睾丸组织块生精细胞分化所需要的条件,使非精子细胞类生精细胞减数分裂为精子细胞。     

全面建成小康社会的“制度密码”——庆祝中国共产党成立100周年

2020年是实现全面精准脱贫和全面建成小康社会的收官之年,是中国共产党实现第一个百年奋斗目标的关键之年,也是执政党兑现向人民做出的庄严承诺之年。脱贫攻坚是执政党治国理政的头等大事,民生发展彰显制度体系和治理体系的强劲优势,全面建成小康社会是实现中华民族伟大复兴的坚实基础。制度体系是全面建成小康社会的根本支撑,需要构建精...     

目标群体参与:精准扶贫政策执行领域形式主义的治理之道

精准扶贫政策执行领域形式主义问题突出,制约政策执行成效。欲破除其形式主义,目标群体参与不失为一种有效的治理路径。目标群体参与可促使精准扶贫政策执行从贫困村贫困户的客观实际出发,紧密联系贫困群众,克服政策执行中的“面子工程”现象,真正实现政策目标。目标群体在精准识别阶段整体参与水平偏低、精准帮扶阶段消极被动参与、贫困退出阶段参与功能弱化、脱贫考核阶段参与有效性不足等问题,引致在克服形式主义方面力有不逮。应在精准识别阶段提升目标群体整体参与水平,精准帮扶阶段提高参与主动性与能力,贫困退出阶段加强参与制度保障,脱贫考核阶段增强参与的有效性,以从根本上治理形式主义这一政策执行不良现象。     

A Model for Female-Perpetrated Domestic Violence

Child abuse often coexists with intimate partner violence. However, limited studies incorporate both phenomena in a single study. Moreover, the examination of female-on-male violence is an important development. Hence, an intrinsic case study of domestic violence is presented to provide insights regarding the nature and impact of female-perpetrated violence. The research approach was qualitative and demonstrated that a model for abusive behavior seems to be similar for both sexes. The data revealed theoretical trends such as the reality of an intergenerational transmission of violence into adulthood, as well as abusive partners presenting with borderline traits.     

日本刑法中的事实错误理论研究

事实的错误是日本刑法理论中关于“错误论”中极其重要的内容之一。虽然中日两国的法律制度相差较大,但是我们可以通过本文的研究得出日本刑法解释者是怎样平衡司法与立法的。本文主要介绍了关于事实错误的三种学说,即具体的符合说、法定符合说和抽象符合说,并对日本的事实错误理论进行了简单的评析。     

金融危机后日本银行货币政策框架演变与启示

为了应对全球性金融危机对金融系统的冲击,日本银行采用了极为宽松的货币政策,在灵活调整货币政策框架的同时运用了大量传统和非传统的政策工具。文章主要从货币政策目标、货币政策工具以及货币政策传导机制三个方面考察了金融危机后日本银行从传统货币政策体系框架向量化货币政策体系框架的演变过程。日本银行的政策实践对我国进一步完善货币政策框架有一定的借鉴和启示。     

西电东送的区域能源效应分析

西电东送有利于国家范围的资源优化配置,有利于开发西部。西电东送工程的成效,一方面取决于输入地内在的长期能源消费变动趋向,另一方面取决于其他能源,尤其是石油价格的未来变动走向,以及电力部门相应的定价策略。     

Like-Sex Versus Opposite-Sex Effects in Transmission of Gender Role Ideology from Parents to Adolescents in Israel

The study examined whether transmission of gender role ideology is more prevalent among parents and children of the same sex (like-sex effect) than among parents and children of the opposite sex (opposite-sex effect). Gender role ideology was assessed on the basis of 2 factors: gender role stereotypes and occupational sex-typing. The research sample consisted of 134 fathers, 134 mothers, and 134 Israeli adolescents (equally divided among girls and boys). Moderate correlations (ranging from 0.22 to 0.58) were found between parents and children, which indicate a partial like-sex effect. Specifically, father–son correlations in gender-role attitudes were higher than father–daughter correlations. Regarding occupational sex-typing, the same pattern was found only for attitudes toward masculine occupations. As far as mothers were concerned, no like-sex effect was found for either aspect of gender role ideology. Mothers were found to have the most liberal gender role attitudes, while children expressed less liberal attitudes, and fathers expressed the most traditional attitudes. As far as occupational sex-typing is concerned, mothers expressed the most liberal attitudes, while no significant differences were found between fathers and children. All family members expressed more traditional attitudes toward in-home roles than toward outside roles, and maintained more stereotyped perceptions of masculine tasks than those of feminine tasks.     

Intergenerational Transmission of Dating Aggression as a Function of Witnessing Only Same Sex Parents vs. Opposite Sex Parents vs. Both Parents as Perpetrators of Domestic Violence

The present study examined the association between witnessing interparental violence as a child, and the risk for perpetrating and being the victim of dating aggression as an adult, in an undergraduate sample. Specifically, this study tested a modeling hypothesis whereby witnessing a same sex parent vs. an opposite sex parent exclusively in the aggressor role would be more highly associated with risk for perpetrating dating aggression. Similarly, observing a same sex parent vs. an opposite sex parent as exclusively a victim of marital aggression would be associated with risk for being a victim of dating aggression. A same sex modeling effect was found for perpetration of dating aggression. Respondents who witnessed only their same sex parent perpetrate physical marital aggression were at increased risk for perpetrating physical dating aggression, whereas respondents who witnessed only their opposite sex parent perpetrate were not. A same sex modeling effect, however, was not found for being a victim of dating aggression. Rather, risk for victimization by dating aggression was associated only with witnessing bidirectional marital violence. Implications of these results, limitations of the present study, and ideas for future research are discussed.     

传播全球化对发展中国家的影响及其对策

国际广播、卫星电视、国际互联网络、跨国传播公司的扩张发展，使传播范围日益全球化，它对发展中国家在促进经济文化的繁荣发展、科技进步和政治民主化进程，缩小与发达国家差距等方面起到良好的促进作用，但同时在抢占媒介市场、冲击文化传统、干预社会意识形态以至内政外交等方面，也对发展中国家形成了挑战。制定和实行相关信息化政策，加强国际间的合作与交流，加快本国新闻传播媒体现代化、国际化步伐，是发展中国家迎接挑战的对策，而最根本的还是提高本国的经济实力。