同科电子形成光谱项的研究

本文从三、四、五个同科电子的"删除法则"推求中找出规律,并且以这些规律推求六个同科电子的"删除法则",并加以证明。     

Recommender systems effect on the evolution of users’ choices distribution

Recommender systems’ (RSs) research has mostly focused on algorithms aimed at improving platform owners’ revenues and user’s satisfaction. However, RSs have additional effects, which are related to their impact on users’ choices. In order to avoid an undesired system behaviour and anticipate the effects of an RS, the literature suggests employing simulations.In this article we present a novel, well grounded and flexible simulation framework. We adopt a stochastic user’s choice model and simulate users’ repeated choices for items in the presence of alternative RSs. Properties of the simulated choices, such as their diversity and their quality, are analysed. We state four research questions, also motivated by identified research gaps, which are addressed by conducting an experimental study where three different data sets and five alternative RSs are used. We identify some important effects of RSs. We find that non-personalised RSs result in choices for items that have a larger predicted rating compared to personalised RSs. Moreover, when a user’s awareness set, which is the set containing the items that she can choose from, increases, then choices are more diverse, but the average quality (rating) of the choices decreases. Additionally, in order to achieve a higher choice diversity, increasing the awareness of the users is shown to be a more effective remedy than increasing the number of recommendations offered to the users.     

时光的悲哀,时代的悲哀--从功利主义角度解读《无名的裘德》中小时光老人的抉择

《无名的裘德》是哈代最后一部也是最有争议的一部小说.哈代在小说中塑造的小时光老人长期得不到重视,即便提到评论界也认为哈代塑造的这个人物是不可信的,尤其是他最后杀死弟妹和自杀的行为.从功利主义角度采用例证的方法来解读小时光老人最后的抉择,可以分析出他采取这一行为的原因,由此可以揭示出其行为背后所暴露出来的儿童抚养问题和教育问题,具有一定现实意义.     

论上世纪初青年的生命形态——从茅盾《霜叶红似二月花》中人物的生存选择观照

《霜叶红似二月花》是茅盾上世纪40年代的一部反思之作,小说以江南村镇为背景,向我们讲述了新兴资本家与地主豪绅相互斗争的故事。其中的人物张婉卿、张恂如以及钱良材的个体生存选择,向我们展现了上世纪初青年的生命形态,表现了特殊境遇人物生存的困境及生命存在的价值与意义。     

德国高校性骚扰的法律规制体系

针对高校性骚扰行为，德国已形成由欧盟法、联邦法、州法和高校自治规范构成的独具特色的四级法律规制体系。该体系对预防和遏制愈发严重的高校性骚扰现象发挥着关键作用，特别是其中的高校自治规范对高校成员范围界定、性骚扰表现形态、处理责任主体、预防措施、处理程序以及惩戒机制做出符合本校实际情况的个性化规定，针对性和可操作性极强，值得我国关注和理性借鉴。