A primal dual active set with continuation algorithm for high-dimensional nonconvex SICA-penalized regression

The smooth integration of counting and absolute deviation (SICA) penalty has been demonstrated theoretically and practically to be effective in nonconvex penalization for variable selection and parameter estimation. However, solving the nonconvex optimization problem associated with SICA penalty in high-dimensional setting remains to be enriched, mainly due to the singularity at the origin and the nonconvexity of the SICA penalty function. In this paper, we develop a fast primal dual active set (PDAS) with continuation algorithm for solving the nonconvex SICA-penalized least squares in high dimensions. Upon introducing the dual variable, the PDAS algorithm iteratively identify and update the active set in the optimization using both the primal and dual information, and then solve a low-dimensional least square problem on the active set. When combined with a continuation strategy and a high-dimensional Bayesian information criterion (BIC) selector on the tuning parameters, the proposed algorithm is very efficient and accurate. Extensive simulation studies and analysis of a high-dimensional microarray gene expression data are presented to illustrate the performance of the proposed method.     

高校市场营销专业学生营销实践能力培养研究

本文首先界定了营销实践能力的含义和构成，然后着重分析了我国高校营销专业学生实践能力缺乏的原因，并针对营销人才实践能力培养中存在的问题提出相应的解决的办法。     

Backward Induction Is Not Robust: The Parity Problem and the Uncertainty Problem

A cornerstone of game theory is backward induction, whereby players reason backward from the end of a game in extensive form to the beginning in order to determine what choices are rational at each stage of play. Truels, or three-person duels, are used to illustrate how the outcome can depend on (1) the evenness/oddness of the number of rounds (the parity problem) and (2) uncertainty about the endpoint of the game (the uncertainty problem). Since there is no known endpoint in the latter case, an extension of the idea of backward induction is used to determine the possible outcomes. The parity problem highlights the lack of robustness of backward induction, but it poses no conflict between foundational principles. On the other hand, two conflicting views of the future underlie the uncertainty problem, depending on whether the number of rounds is bounded (the players invariably shoot from the start) or unbounded (they may all cooperate and never shoot, despite the fact that the truel will end with certainty and therefore be effectively bounded). Some real-life examples, in which destructive behavior sometimes occurred and sometimes did not, are used to illustrate these differences, and some ethical implications of the analysis are discussed.     

A comparison of regression models for ordinal data in an analysis of transplanted-kidney function

Three regression models for ordinal data, those of Fienberg, McCullagh, and Anderson, are applied to an analysis of kidney function among transplant recipients. The conclusions arising from each model are presented and contrasted.     

华兴会与科学补习所同异论

华兴会和科学补习所是两湖地区在同一年内相继成立的两个比较正规的革命团体,因而具有可比性。将两者进行比较研究,找出其同异之点,对于正确认识、评价华兴会和科学补习所的历史地位与作用是具有积极意义的。两个革命团体均具有比较明确的革命纲领;自成立之日起便将武装起义提上了议事日程;两团体密切合作,彼此协同动作,并且已将两湖革命运动与孙中山领导的全国性革命运动联成一体,他们均已成为孙中山在国内较早的朋友和同志,因而具有许多相同之点。但是,两个革命团体设立的组织机构不同,工作的侧重点不同,在会内外联络的方式不同,两个革命团体的归宿也不同。     

中小学体育教师继续教育术科课程设置改革探究

采用文献资料调研、访谈、比较、逻辑分析和数理统计等研究方法,在梳理新课改以来我国中小学体育教师继续教育课程改革发展状况、调查和总结安徽省体育教师继续教育课程教学计划的基础上,对我国中小学体育教师继续教育术科课程设置改革的前提条件以及目前术科课程设置的现状和存在问题进行研究分析,并提出了术科课程设置改革的具体对策：拓展术科课程内容体系、完善术科课程内容体系的结构、改进术科课程内容的组织形式。     

论李焘对《王安石日录》的取舍

以往学界多认为李焘在《续资治通鉴长编》中采录《王安石日录》入正文,是不因人废言的良史作派,但这只是注意了李焘用《日录》订正史实的一面,而在具体到事关新法是非以及针贬变法方面的深刻用意却很少注意。实际上李焘是用王安石自己的记录来否定变法。     

清代玛纳斯兵屯及相关问题研究

清代玛纳斯兵屯始于乾隆二十七年(公元1762年),成果显著。到乾隆四十二年(公元1777年),玛纳斯眷营的屯田总亩数已达28200亩,屯田士兵达1400人,解决了当地驻军的口粮问题,并对民屯的发展打下了良好的基础。     

拂去尘埃始见金——二战沈阳盟军战俘营研究综述

位于沈阳市的“二战沈阳盟军战俘营”,是1942日本建立的关押美英等国盟军战俘的集中营。它是纪录日本军国主义曾是堪称世界最残暴的老牌恐怖主义,用冻饿、殴打、奴役和细菌试验,用最惨无人道灭绝人性的手段,违反国际法残害战俘的罪证。同时也是中国人民和美、英等国人民“共同经历,共同战斗,共同利益的见证。”开发研究二战沈阳盟军战俘营的历史文化资源,对于揭露日本军国主义并遏制其复活,以及沟通中西方人民的交流理解,具有重大的现实意义。由于种种原因,这段历史被尘封数十年成为空白。“拂去尘埃始见金”,经过中美(盟国)人民和专家学者的几十年的努力,终于使这段鲜为人知的史实从尘封中浮出,成为见证历史的重要文物。