Penalized Spline Estimation for Varying-Coefficient Models

Varying-coefficient models are useful extensions of classical linear models. They arise from multivariate nonparametric regression, nonlinear time series modeling and forecasting, longitudinal data analysis, and others. This article proposes the penalized spline estimation for the varying-coefficient models. Assuming a fixed but potentially large number of knots, the penalized spline estimators are shown to be strong consistency and asymptotic normality. A systematic optimization algorithm for the selection of multiple smoothing parameters is developed. One of the advantages of the penalized spline estimation is that it can accommodate varying degrees of smoothness among coefficient functions due to multiple smoothing parameters being used. Some simulation studies are presented to illustrate the proposed methods.     

舆论安全视角下的思想政治教育

有效发挥思想政治教育功能,确保国家舆论安全是新形势下思想政治教育面临的新课题。在我国舆论安全环境异常复杂严峻的情况下,必须深刻认识舆论安全视角下思想政治教育的地位与作用,准确把握思想政治教育和舆论安全的关系,主动契合舆论安全开展好思想政治教育。     

给排水科学与工程专业合作教育模式

针对有效推进产学研合作教育问题,采用实例分析方法,结合辽宁工程技术大学给排水科学与工程专业合作教育实践成果,客观分析了合作教育取得的成效及存在问题,并从政府、学校、企业、教师、学生等不同层面对开展合作教育提出了合理化对策.     

“德国斗牛士”与法国哲学——从民族语言角度谈“法国哲学”的身份

在海德格尔眼里,现代哲学的危机很大程度上源于一种"哲学的罗马性",即哲学由于继承了罗马-拉丁文化而遗忘了希腊这个真正的起源而误入了歧途.海氏认为哲学从根本上与言说它的语言本质关联,且只有德语与希腊语具有内在亲缘性,因而德国哲学将独享思想的荣耀.那么据此,对于20世纪辉煌的法国哲学来说,"法国哲学"这个称谓还有意义吗?它还有其身份和合法性吗?本文通过对欧洲各民族语言源流的考察以及对语言与思想之间的某些关系的探讨指出:1.从语言学史角度上看,德语在起源上并不比法语以及其他拉丁语族更接近希腊语;2.单纯通过追溯起源来回归希腊思想在哲学上是一种虚假的乡愁;3.语言本身并不能穷尽思,从而没有哪种民族语言可以独享哲学的特权;4.而法语作为一种民族语言,其本身在言说思想的同时比其他语言更注重一种"讲述的文学性",从而与思想本身形成了一种强大的张力和互动关系,从而使法国哲学显现出强大的创造力,并由此奠定了"法语哲学"之区别于德语哲学以及其他民族语言哲学的明显特征和身份.     

坚持立警为公 实现执法为民

“立党为公、执政为民”具体落实到公安工作中就是要坚持“立警为公、执法为民”。为此,就必须转变执法观念、增强服务意识、树立正确的权力观,认真履行全心全意为人民服务的宗旨;必须全面提高民警的政治素质、法律素质和执法水平,严格、公正、文明执法;必须建立健全完善的管理机制和监督机制,充分发挥监督职能。     

论新时期统一战线工作的新思路

在构建社会主义和谐社会的新时期,统一战线工作必须在历史任务、工作范围和活动领域等方面与构建和谐社会的目标相适应。就国有企业来说,其统战工作要将务虚和务实相结合,通过多种渠道实现和保证国有企业职工的收益;就广大农村区域来说,要通过制度建设保证村民和农民工的合法权益;在经济领域要特别做好非公有制经济界人士的统战工作;要通过提高民主党派组织化程度和组织建设,寻找团结各民主党派的新途径。     

试析宋元民间叙事文体中的张飞形象

宋元民间叙事文本的张飞形象是他在不同历史时期、不同作者群体手中有不同地位、不同作用的最好注解。这形象同历史史实相联,符合创作者审美取向、是他们内心深处愿望和需求的阐释,统治阶层的喜好也在一定程度上推波助澜甚或直接影响创作者的选择,有很强的示范性。     

城市化形成机制的经济学分析

城市化的形成机制是推动城市形成的动力机制,主要包括动力机制、实现机制和推动机制三大机制。产业的发展是驱使城市化发生和发展的动力机制;规模经济的实现和聚集以及对周边地区产生的磁场效应是城市化的实现机制;制度变迁和比较利益的推动是促进城市化发展的推动机制。三大机制的综合作用,促进了城市化的不断推进。     

对高校科研评价指标体系的思考

确立高校科研评价指标体系对提供科研导向、建立激励基础等发挥重要的作用,但是确立科研评价指标须遵循系统性、科学性、稳定性、可行性和全面性等原则。     

Designing Service Level Agreements for Inventory Management

Service level agreements (SLAs) are widely employed forms of performance‐based contracts in operations management. They compare performance during a period against a contracted service level and penalize outcomes exceeding some allowed deviation. SLAs have a number of design characteristics that need careful tuning to ensure that incentives are properly aligned. However, there is little theoretical research in this area. Using an example of an SLA for outsourcing inventory management, we make a number of recommendations. First it is preferable, if possible, that penalties be proportional to the underperformance rather than lump‐sum ones. This goes a long way towards mitigating strategic (“gaming”) behavior by the supplier. Second, it might be thought that giving “bonuses for good performance” rather than “penalties for bad performance” are essentially identical apart from the former being a more positive approach to management. This turns out to be incorrect in the case of large percentage service rate targets and that penalties will normally be preferred by the buying firm. Third, in order not to incorrectly penalize underperformance resulting purely from “noise” rather than supplier efforts, management might think it best to make allowed deviations from the target generous. Again intuition is not a helpful guide here: for proportional penalties, acceptable performance deviations should be close to the target. Although these results come from a particular inventory application, it is likely that the lessons are applicable to SLAs in general.