Efficient heterogeneous sampling for stochastic simulation with an illustration in health care applications

In modeling disease transmission, contacts are assumed to have different infection rates. A proper simulation must model the heterogeneity in the transmission rates. In this article, we present a computationally efficient algorithm that can be applied to a population with heterogeneous transmission rates. We conducted a simulation study to show that the algorithm is more efficient than other algorithms for sampling the disease transmission in a subset of the heterogeneous population. We use a valid stochastic model of pandemic influenza to illustrate the algorithm and to estimate the overall infection attack rates of influenza A (H1N1) in a Canadian city.     

新时代大学生职业使命感培育路径初探

作为社会主义现代化建设的主力军,大学生肩负着实现中华民族伟大复兴的重要使命。在这样的现实语境中,加强职业使命感培育尤为重要。基于新时代大学生职业使命感培育影响因素的复杂性,必须建构社会-学校-家庭三方协同培育大格局,以培育大学生职业使命感。     

“健康中国”背景下全民健身与全民健康融合研究

结合我国实际，从全民健身和全民健康的科学理念、科学研究、人才培养、体医融合、设施建设、产业发展、“互联网+”运用等措施，实现全民健身和全民健康的深度融合，保障政府工作落地生根，促进全民健康。     

Cities evolution tree and applications to predicting urban growth

China’s unprecedented urbanization and economic modernization have brought about significant growth and land use changes in cities and their surroundings. Traditional analyses of the relationship between urbanization and land use change have not fully incorporated important factors like city function or developmental stage. We define and apply a new visualization and analysis tool—an evolution tree—showing how an understanding of evolutionary pathways taken by growing cities contributes to visualization and forecasting of urban development and spatial expansion. We clustered 253 Chinese cities by type and developmental stage, arranging them in a “tree” structure, with types grouped as branches and leaf position along branches reflecting developmental stage. Urban growth rates are higher for business-oriented, manufacturing-oriented, and functionally comprehensive cities than for those oriented toward tourism. Extent of spatial growth is dominated by city type and developmental stage. Cities evolve along typical pathways, punctuated by occasional leap developments across functional types.     

四川盆地雷口坡组层序岩相古地理

针对四川盆地各矿区雷口坡组地层划分方案不统一，且受早印支运动的影响，雷口坡组顶部岩溶带地层垮塌破坏，造成地层内幕划分及岩相古地理恢复困难的难题，以层序地层学理论与方法为指导，重新厘定了盆地内雷口坡组的地层划分方案，以四级层序为作图单元进行层序岩相古地理重建。高精度的层序岩相古地理研究表明，雷口坡期四川盆地处于局限–蒸发海环境，在川西北一带靠近松潘—甘孜海槽一带发育有台地边缘，台地内部颗粒滩和台地边缘颗粒滩构成了雷口坡组的勘探主体。岩相古地理的演化表明，雷口坡组沉积时期盆地底形发生了东倾向西倾“跷跷板”式的转换，在层序I 早期仍保持了早三叠世西高东低的地形格局，至层序III 沉积期东倾趋势消失，层序IVV 沉积时期盆地内隆凹格局略具雏形。伴随着构造挤压运动的加剧，从层序VI 开始盆地底形隆凹格局分异加剧，形成巨厚膏盐盆，膏盐盆沉积中心在层序VIX 沉积时期具有明显西移的趋势。     

如何提高高职院校辅导员的沟通能力

高校辅导员工作既是一个思想政治教育的过程，也是一个人际思想沟通的过程。事实上，思想政治教育工作能否取得实效，很大程度上取决于辅导员与学生之间能否实现有效的沟通。从高职院校的实际出发，就高职院校辅导员沟通能力的提高进行多方面的探讨。     

女性在田野调查中的性别处境研究

当研究者进入田野，田野对象就会试图将研究者放置在一个位置上，而研究者也会给自身寻找一个适合的位置．田野对象对研究者的定位反映的即是一般的社会性别价值。通过对12位女性研究者进行访谈，拟了解女性研究者是否因自身性别而遭受困境，其性别先前理解又是如何影响她对于性别差别遭遇的反应的。结果发现，虽然处于不同的年龄、专业领域，拥有不同的生活阅历，女性研究者在田野中的经验却有着相似之处。即她们的专业角色被忽视，更多地被视为传统女性的角色。在这一现实背景下，为了使研究能够顺利进行。女性研究者通常的选择是表现得有礼貌或者不得不忍气吞声。     

关于全面实施免费婚前健康检查的研究

建立并实施科学有效的婚前健康检查制度, 有利于控制不孕不育、有关传染病的蔓延、出生缺陷等不良情况的发生。然而, 目前我国婚前健康检查情况并不理想。为此, 文章提出了全面实施免费婚检制度的建议, 并对实施这一制度的意义和可行性进行了分析。最后文章提出了全面实施免费婚前健康检查的四点建议。     

乡村文化变迁视野下的农村留守儿童教育

乡村文化对留守儿童具有较大教育功能,能够在一定程度上弥补留守儿童家庭教育的缺失,丰富留守儿童的精神生活。但是,乡村本土文化被边缘化,乡村家庭文化失序,乡村学校教育文化衰弱,乡村邻里关系逐渐陌生化等变迁对农村留守儿童的身心发展产生了深刻影响。在乡村文化变迁背景下,需要重视乡村文化建设,通过家庭、学校、邻里社区,树立留守儿童对乡村文化的认同,提高内在精神修养,促进健全人格的塑造,推进社会化发展。     

Social networks and the organisation of big business groups in post New Economic Policy (NEP) era in the 1990s in Malaysia

Personal ties are generally regarded as important to big business growth in Malaysia, particularly after the New Economic Policy (NEP) in the 1990s. Common types are informal ones established between multi-ethnic big business people and Malay key state and political leaders. Other types of ties, company directorship links and informal ties, are seldom studied especially those between the business people and former state bureaucrats and corporate professionals. Thus, by conceptualising the directorship links and informal personal ties as social networks, the author conducted a sociological analysis of some intra- and inter-ethnic directorship links and ties established by four prominent big businessmen after the NEP in the 1990s. This article reports the main finding on the links and ties becoming a common organisational mechanism of business groups owned and controlled by the businessmen, besides providing access to the state. Therefore, another understanding of inter- and intra-ethnic personal ties in big business growth, especially after the NEP is achieved.