基于局部社团结构平衡的双模符号网络链路预测研究

随着互联网产业的高速发展,双模符号网络已经成为一类常见的复杂网络,然而针对此 类网络的分析较少。本文在传统非符号网络局部社团理论和符号网络结构平衡理论的基础上,首次提出了双模符号网络下的局部社团理论。这一理论不仅考虑了符号网络中共同邻居的信息,还引入了共同邻居间存在的连接。进一步地,本文推导出符号网络中基于局部社团信息的加权平衡回路增益指数,该指标可以表示双模符号网络中用户节点和产品节点间的符号关系。为了将该指标更好地应用于双模 符号网络链路预测问题,本文提出了加权平衡回路增益分类器算法。实验结果表明,相比其他经典链路预测算法,新算法具有更好的预测能力。     

大学生“中国梦”认同状况调查

大学生是实现"中国梦"的重要后备力量,大学生对"中国梦"的认同状况将深刻影响中华民族伟大复兴的进程。对781名大学生的实证调查发现:"中国梦"得到大学生的广泛认同,但仍有少部分大学生持不赞同态度,高校"中国梦"教育有待加强。大学生对"中国梦"认同指数正影响最大的是命运自我掌控感和亲社会倾向,而负影响最大的是命运受掌控感和个体化程度,因此,加强正向引导非常重要。     

海上丝绸之路沿线地区概况及深圳参与建设的潜力分析

通过分析21世纪海上丝绸之路国家战略提出的背景和意义,以及21世纪海上丝绸之路沿线地区人口资源、文化、城市化进程、工业化进程、资源等发展的基本情况,梳理深圳参与海上丝绸之路的需求和潜力,为深圳参与海上丝绸之路建设提供建议。     

Dose‐Response Models Incorporating Aerosol Size Dependency for Francisella tularensis

The effect of bioaerosol size was incorporated into predictive dose‐response models for the effects of inhaled aerosols of Francisella tularensis (the causative agent of tularemia) on rhesus monkeys and guinea pigs with bioaerosol diameters ranging between 1.0 and 24 μm. Aerosol‐size‐dependent models were formulated as modification of the exponential and β‐Poisson dose‐response models and model parameters were estimated using maximum likelihood methods and multiple data sets of quantal dose‐response data for which aerosol sizes of inhaled doses were known. Analysis of F. tularensis dose‐response data was best fit by an exponential dose‐response model with a power function including the particle diameter size substituting for the rate parameter k scaling the applied dose. There were differences in the pathogen's aerosol‐size‐dependence equation and models that better represent the observed dose‐response results than the estimate derived from applying the model developed by the International Commission on Radiological Protection (ICRP, 1994) that relies on differential regional lung deposition for human particle exposure.     

网上性爱与网下的性实践之间的关系——全国14-61岁总人口随机抽样调查结果的实证

对于网上性爱,迄今为止仍然缺乏科学的实证研究。本研究基于2010年全国14-61岁总人口的随机抽样调查的数据,第一次在具有总体代表性的意义上,运用多元线性回归分析的方法分析了中国各个社会阶层参与网上性爱的不同程度,发现网上性爱其实是中上社会阶层的主流文化。本文进一步进行检验,发现在16种网下的非主流的性行为实践中,只有"上年中有过一夜情"这样一种情况与"网上性爱参与程度"呈现为显著的相关关系;从而证明了"网上黄毒"的假设不成立。     

Semi-non parametric smooth isotonic regression

We propose a new method for smooth isotonic regression analysis. Unlike most existing methods for isotonic regression, the proposed method is akin to parametric regression without order restriction. To account for smoothness and isotonicity simultaneously, we exploit the flexible class of semi-non parametric densities to model isotonic regression functions. Under this framework, the full range of inference techniques for parametric regression models become applicable for model estimation and model validation in isotonic regression.     

Dynamic preference revelation and expression of personal frames: how Weibo is used in an anti-nuclear protest in China

This study explores the use of Weibo in a protest against a nuclear fuel processing plant in China. This study argues that social media play an important role in the development of protests in non-democratic societies through the mechanism of preference revelation, which blurs the boundary between offline protests and the individualized expression of preferences on social media. Of Weibo tweets which were posted prior to the occurrence of the offline protest, 11,788 protest-related were examined with the aid of a supervised machine learning technique. The results showed that the revelation of personal preferences in the form of individualized expressions of opposition were more common than mobilization and coordination, and such preferences were legitimized by the personal frames of risk and the distrust in government. The use of Weibo to mobilize potential opponents to the project, primarily by calling for the expression of opposition, was less frequent than the use of Weibo to express personal frames. Furthermore, the prevalence of Weibo usage changed dramatically. In the first few days of the protest, the revelation of personal preferences and personal frames of risk were prominent, whereas personal frames of distrust in government were common in the days leading to the street protest.     

国家、民族、社区——美国国家公园建设的经验及教训

美国国家公园建设过程中，以国家为主导，注重国家意识，定位服务功能，体现其教育理念，并在此过程中将管理和利用模式由开始的保护转变为现在的保护与利用并行，为全世界提供了一个成功的模板。但在其100年的发展过程中，环境的破坏，原住民权利的漠视，游客管理的混乱，是其曾遇到或正在面临的问题。建议我国在进行国家公园建设时，应扬长避短，突出国家名义，强调社区参与和游客管理先行，并注重国家公园的公益性和教育功能。     

城市高密度人口分布下的社区建设——以广州荔湾区为例

以广州荔湾区“六普”资料为根据，就人口高密度分布与社区建设的关系进行梳理与探讨。荔湾区“六普”数据显示，城区人口密度过高，成为影响社区生活的主要因素，给居民生命安全、公共生活质量与日常生活便利性带来负面效应。科学化与人性化人口密度干预是治理高密度人口问题的理性策略，如“跳出”社区视野，在城市“一盘棋”中均衡人口布局，在社区建设中，通过社区更新改造，增强人口承载能力，通过建构便利舒适人居环境，提升社区生活质量。