Random spectral measure for non Gaussian moving averages

We study the distribution of phases and amplitudes for the spectral representation of weighted moving averages of a general noise measure. The simple independent structure, known for the Gaussian case, and involving Rayleigh amplitude and uniform phase distributions, is lost for the non Gaussian noise case. We show that the amplitude/phase distributions exhibit a rich and more complex structure depending not just on the covariance of the process but specifically on the form of the kernel and the noise distribution. We present a theoretical tool for studying these distributions that follows from a proof of the spectral theorem that yields an explicit expression for the spectral measure. The main interest is in noise measures based on second-order Lévy motions since such measures are easily available through independent sampling. We approximate the spectral stochastic measure by independent noise increments which allows us to obtain amplitude/phase distributions that is of fundamental interest for analyzing processes in the frequency domain. For the purpose of approximating the moving average process through sums of trigonometric functions, we assess the mean square error of discretization of the spectral representation. For a specified accuracy, the approximation is explicitly given. We illustrate the method for the moving averages driven by the Laplace motion.     

“主体间性-干预行动”框架:质性研究的反思谱系

质性研究中存在三种困境：主体间性、表述政治、参与行动。前两者是认识论意义上的困境,后者是解放政治和行动意义上的困境。他们在反思广度、深度、力度方面层层递进、步步深入。从对对象的反思到将研究作为反思对象,从认知研究到行动研究,共同构成了质性研究的“主体间性-干预行动”反思谱系。     

Controlling children's lives: covert messages in child protection service reports

This article presents central findings from a detailed examination of written documents in 50 child protection cases from the Norwegian welfare state. In so doing, it explores issues related to the social consequences of document writing in welfare state services. Using a frame drawn from Foucault's theory of discursive rites, it looks at the writing of certain documents as ritual performances involving on the one hand, various chains of power and on the other, processes reinforcing ruling definitions of normality. The examination shows that documents do more than satisfy bureaucratic demands for record keeping about the delivery of child protection services. These records also serve as distributors of social identities and social positions for children and their families. Moreover, the examination also reveals the contours of a paradox whereby, activities intended to help and to protect some children often involve using these youngsters to reaffirm normality in society and to confirm the existing social order. These findings indicate that there is a need for greater sensibility to ethical issues involved in documents writing.     

企业竞争力构成要素辨析与评价指标选择的思考

基于循环经济研究企业竞争力是管理学界的新研究视角。最新研究成果视资源、技术、管理、经济、环境和社会责任为企业竞争力之6 种构成要素。然而,资源与技术只是竞争力潜能而非竞争力自身,潜能必须显现才能转化为竞争力。要想真正能够测度企业竞争力,必须分清评价指标层级与归属,而且指标要真正能够刻画竞争力的某一特校或特征,且具有广谱代表性。     

族群历史记忆的身体再现——红瑶身体装饰的文化表达研究之二

身体装饰是身体的文化表达的重要方式之一。一个特定群体的身体装饰的文化表达至少包含四个层面:社会身份标记、族群文化记忆的身体再现、个体情感和自我的经验表述、历史和身体政治的折射。就第二个层面而言,红瑶通过身体及其装饰行为表达对族群历史记忆的认同,并使之以身体实践的方式一代代地得以传承和"再现"。     

CARMA(p,q) generalized random processes

There is now a vast literature on the theory and applications of generalized random processes, pioneered by Itô (1953), Gel’fand (1955) and Yaglom (1957). In this note we make use of the theory of generalized random processes as defined in the book of Gel’fand and Vilenkin (1964) to extend the definition of continuous-time ARMA(p,q  ) processes to allow q≥p$q\ge p$, in which case the processes do not exist in the classical sense. The resulting CARMA generalized random processes provide a framework within which it is possible to study derivatives of CARMA processes of arbitrarily high order.     

历史哲学的可能性及其理论建构——基于哲学与历史学学科属性的对比

哲学与历史学之间的差异表现为：哲学凭借概念展开推理,在它的叙述过程中,实例和说明并不占有重要的地位;历史学侧重于重现过去的历史事件,具体历史事件的发生、发展和消亡的过程在它的叙述中占有本质重要的地位。由于哲学和历史学之间的差异,哲学家和历史学家总是相互攻讦,哲学家认为历史学过于重视具体的历史事件而忽视理性,历史学家认为哲学把自己的发明和先天的虚构放在了历史当中。但是他们都不否认哲学与历史学之间存在互补关系,并在此基础上出现了二者融合的观点。克罗齐主张哲学与历史学的融合,但认为历史哲学不能成立,这种观点具有片面性,历史哲学不仅可能而且具有内在的结构。     

论日常生活的电视表征

在当今这个大众媒介时代,原本长期被人们忽略的日常生活改头换面。以电视为平台重新回到了大众的视野。文章分别从电视民生新闻、日常生活电视剧和电视娱乐节目三个常见的电视节目形式入手,全面生动地展示了日常生活元素在电视文本中的表征,揭示了日常生活对电视节目运作以及电视文本意义的生产所发挥的重要作用。     

Ranking sets additively in decisional contexts: an axiomatic characterization

Ranking finite subsets of a given set X of elements is the formal object of analysis in this article. This problem has found a wide range of economic interpretations in the literature. The focus of the article is on the family of rankings that are additively representable. Existing characterizations are too complex and hard to grasp in decisional contexts. Furthermore, Fishburn (1996), Journal of Mathematical Psychology 40, 64–77 showed that the number of sufficient and necessary conditions that are needed to characterize such a family has no upper bound as the cardinality of X increases. In turn, this article proposes a way to overcome these difficulties and allows for the characterization of a meaningful (sub)family of additively representable rankings of sets by means of a few simple axioms. Pattanaik and Xu’s (1990), Recherches Economiques de Louvain 56, 383–390) characterization of the cardinality-based rule will be derived from our main result, and other new rules that stem from our general proposal are discussed and characterized in even simpler terms. In particular, we analyze restricted-cardinality based rules, where the set of “focal” elements is not given ex-ante; but brought out by the axioms.      

Connecting Parliament to the Public via the Internet

A number of scholars have argued that the Internet could strengthen representative democracy. This article presents two case studies of online consultations run on behalf of the UK Parliament and tests a series of hypotheses about online public deliberation. One consultation involved women survivors of domestic violence; the other was linked to the examination by a Parliamentary Committee of the draft Communications Bill. The article concludes by suggesting that the success of online parliamentary consultations is dependent upon two groups of actors, parliamentarians and citizens, each of which must acquire new types of communication skills and develop new practices of operating.