ROC Curves in Non‐Parametric Location‐Scale Regression Models

Abstract. The receiver operating characteristic (ROC) curve is a tool of extensive use to analyse the discrimination capability of a diagnostic variable in medical studies. In certain situations, the presence of a covariate related to the diagnostic variable can increase the discriminating power of the ROC curve. In this article, we model the effect of the covariate over the diagnostic variable by means of non‐parametric location‐scale regression models. We propose a new non‐parametric estimator of the conditional ROC curve and study its asymptotic properties. We also present some simulations and an illustration to a data set concerning diagnosis of diabetes.     

Bayesian variable selection with spherically symmetric priors

We propose that Bayesian variable selection for linear parametrizations with Gaussian iid likelihoods should be based on the spherical symmetry of the diagonalized parameter space. Our r-prior results in closed forms for the evidence for four examples, including the hyper-g prior and the Zellner–Siow prior, which are shown to be special cases. Scenarios of a single-variable dispersion parameter and of fixed dispersion are studied, and asymptotic forms comparable to the traditional information criteria are derived. A simulation exercise shows that model comparison based on our r-prior gives good results comparable to or better than current model comparison schemes.     

Practices and Flows of Digital Photography: An Ethnographic Framework

This article develops a methodological framework for undertaking empirical studies of practices and flows, of doings and circulations, of digital tourist photography. The article outlines what might be termed a non‐representational approach to photography concerned with affordances, actor‐networks, hybridized practices and networked flows of photographs. The article falls in three parts. It begins with rethinking photography theory. Traditional dualisms between affordance and practice are challenged, and photography is conceptualized as a hybridized, embodied performance. How digital photography changes photography's traditional affordances is then discussed. The third part discusses various methods to describe how affordances of digital tourist photography are used, twisted and resisted in concrete hybridized practices. I suggest undertaking multi‐sided ethnographies with ‘busy photographers’ to craft non‐representational accounts of mobile practices of photographing and flows of photographic images across various sites and actor‐networks. In a broader sense, this article is a methodological contribution to ‘the new mobilities paradigm’.     

债信文化的形成与中国金融业的发展

债信文化是市场经济制度的基本文化形态,从一定意义上讲,由计划体制向市场体制转轨,就是要建立全社会的信用基础以及与之相适应的债信文化和契约文化.针对中国缺乏而又急需债信文化的现实,开放民间金融和民间信用,已成为建立和发展债信文化的必由之路.而放弃政府对国有企业、特别是国有银行的隐含担保,清除债信文化的形成障碍,已成为建立和发展债信文化的当务之急.     

形而上与形而下:后形而上学的解读--王船山的道器之辨及其哲学意蕴

作为中国古代哲学的总结者,王船山对于形而上与形而下之间的区分作出了不同于宋明儒家的理解.他的理解主要从两个前提出发:第一,之谓与谓之之辨,通过这两个语词的区分,王船山明确了形而上与形而下的区分不是世界固有区域的客观划分,而是根据主体的存在方式才作出的主观性划分;第二,有无与隐显之辨,通过这个讨论,王船山告诉我们,形而上与形而下之别是隐显之别,而不是有无之辨.王船山对形上、形下的如上解读意味着把哲学之思从形而上学框架内解放出来的努力,意味着后形而上学视域的开启.     

非英语专业学生作业布置和批改情况调查研究

本文以南京 6所大学 15 0名非英语专业学生为对象 ,采用问卷和面谈等方式 ,调查分析了非英语专业学生的作业布置和批改情况 ,讨论大学英语教师应该怎样布置和批改学生的作业     

论未来的非物质化设计

2 1世纪是信息社会 ,非物质化的趋势和电脑技术的发展 ,将导致艺术手段、方法、过程等一系列的变化。面对未来 ,我们应当以科学的态度对艺术设计的趋势进行研究 ,以便制定长远的计划 ,从而为信息时代的未来设计观念的形成做好准备。     

论我国酌定不起诉权行使的条件

从立法机关对检察机关的酌定不起诉权的态度和《刑法》的相关规定分析,"犯罪情节轻微"是我国检察机关行使酌定不起诉权的前提条件,而将"犯罪情节"理解为量刑情节则有助于充分实现酌定不起诉权的积极功能。     

生产要素按贡献分配原则的创新与市场化运用

中共十六大报告首次提出确立劳动、资本、技术和管理等生产素按贡献参与分配的原则,其重大的创新意义在于表述更科学,导向更加明确。按贡献分配原则运用的关键在于,劳动、资本、技术和管理要素贡献大小的度量,应采取市场化的办法解决。按贡献分配必须与按劳分配为主、多种分配方式并存的基本分配制度结合,在结合中要特别强调公有制企业充分考虑非劳动要素贡献分配,非公有制企业充分考虑劳动贡献要素分配。     

论道德选择过程中非理性因素及教育思考

在道德选择过程中 ,非理性因素起着不可忽视的重要作用 ,它提供道德选择的心理背景 ,是道德选择的深厚的源泉和强大动力 ,是道德选择的维持和调节因素。鉴于此 ,在我们的道德教育活动中 ,要改变单纯强调理性教育——即单纯强调概念、原则的教育倾向 ,要充分重视非理性因素的作用 ,注重对无意识心理背景的理解 ,重视教育过程中受教育对象的体验 ,加强情感的教育 ,从而使我们的道德教育更能起到实效