当前青少年依法参与的现状分析与路径依赖

随着青少年主体意识的不断觉醒,其依法参与意识也在不断提高,本文从剖析青少年依法参与现状中的表现形式和表现特征入手,探讨青少年依法参与中存在问题的成因,并在此基础上提出强化青少年依法参与的多方路径,即培养青少年成为合格的依法参与主体,构建以共青团为核心的青少年组织化体系,充分发挥网络作用,促进青少年依法参与,进一步完善青少年依法参与相关法律法规和政策,着力构建青少年事务社会工作体系。     

唐代中后期城乡关系之状况及其成因

中唐后，由于商品经济的发展，城乡关系由原来以对抗性为主转化为依存性、对抗性并存，反映了这一时期生产力的发展给生产关系带来的变革。文章对这一状况及其复杂多样的成因进行了分析和探讨。     

2<Superscript><Emphasis Type="Italic">m</Emphasis></Superscript>4<Superscript>1</Superscript> designs with minimum aberration or weak minimum aberration

For measuring the goodness of 2 ^m 4¹ designs, Wu and Zhang (1993) proposed the minimum aberration (MA) criterion. MA 2 ^m 4¹ designs have been constructed using the idea of complementary designs when the number of two-level factors, m, exceeds n/2, where n is the total number of runs. In this paper, the structures of MA 2 ^m 4¹ designs are obtained when m>5n/16. Based on these structures, some methods are developed for constructing MA 2 ^m 4¹ designs for 5n/16<m<n/2 as well as for n/2≤m<n. When m≤5n/16, there is no general method for constructing MA 2 ^m 4¹ designs. In this case, we obtain lower bounds for A ₃₀ and A ₃₁, where A ₃₀ and A ₃₁ are the numbers of type 0 and type 1 words with length three respectively. And a method for constructing weak minimum aberration (WMA) 2 ^m 4¹ designs (A ₃₀ and A ₃₁ achieving the lower bounds) is demonstrated. Some MA or WMA 2 ^m 4¹ designs with 32 or 64 runs are tabulated for practical use, which supplement the tables in Wu and Zhang (1993), Zhang and Shao (2001) and Mukerjee and Wu (2001).     

Some Results on the Control of the False Discovery Rate under Dependence

Abstract.  Controlling the false discovery rate (FDR) is a powerful approach to multiple testing, with procedures developed with applications in many areas. Dependence among the test statistics is a common problem, and many attempts have been made to extend the procedures. In this paper, we show that a certain degree of dependence is allowed among the test statistics, when the number of tests is large, with no need for any correction. We then suggest a way to conservatively estimate the proportion of false nulls, both under dependence and independence, and discuss the advantages of using such estimators when controlling the FDR.     

Improving social psychiatric treatment in residential programmes for emerging dependence groups in Europe: cross-border networking, methodological innovations and substantive discoveries

A mini-symposium series of papers presenting the results of the European Commission-supported Biomed II project is introduced. The project accomplished a cross-border scientific networking engaging 31 European residential treatment programmes. The results showed that scientific development is best served by a flexible bureaucratic approach. 'Old' science and the 'new' science ways of working were balanced. 'History' and 'social networks' are the key concepts signalling the project knowledge gains. A treatment sample (N=723) was extracted from a database of 1028 current European cases. Non-drug-specific characteristics are as important as drug-specific characteristics in distinguishing emerging dependence groups. The project networking created a process that increased the level of involvement of science and the service communities. To sustain the gains of the project, a reaching out of existing European treatment services to extended family and friendship networks with a history of dependence-related problems will be required.     

马克思“自由个性”的本质内涵探析

马克思的"自由个性"思想是贯穿其人类解放思想的一条重要线索。"自由个性"的本质内涵，即究竟什么是"自由个性"，可以概括如下：人的"自由个性"应当是"现实的人"在"普遍的物质变换"的前提下，在"个性"与"依赖"的辩证运动中加以实现；人的"自由个性"应当是衡量人的全面发展的重要价值尺度，即人的能力的全面提升以及交往和需求的全面发展；人的"自由个性"应当是"每个人"和"一切人"的和谐统一，是个人发展与社会发展的和谐统一，是个人利益和共同体利益的和谐统一。     

Alternative forms of fractional Brownian motion

It is pointed out that two contradictory definitions of fractional Brownian motion are well-established, one prevailing in the probabilistic literature, the other in the econometric literature. Each is associated with a different definition of nonstationary fractional time series, arising in functional limit theorems based on such series. These various definitions have occasionally led to some confusion. The paper discusses the definitions and attempts a clarification.     

On a Bivariate Distribution with Exponential Marginals

A new bivariate distribution with exponential marginals has been introduced by Singpurwalla & Youngren (1993). This distribution is absolutely continuous and has a single parameter. It was originally motivated as the failure model for a two-component system experiencing damage described by a shot–noise process. The purpose of this paper is two-fold. The first is to articulate on several aspects of this distribution, in particular, its genesis, the nature of its dependence, its correlation structure, and its generalized version as a two-parameter bivariate distribution with exponential marginals. The second purpose of this paper is more general. Prompted by the need to explain certain features of the bivariate distribution, it is found useful to introduce a new notion in reliability and survival analysis. This notion is called the "hazard potential", of an item susceptible to failure. The hazard potential is viewed as a kind of hidden parameter of failure models that delineates a cause and effect relationship in reliability.     

The asymptotic behaviour of a class of L.-estimators under long-range dependence

This paper obtains asymptotic representations of a class of L-estimators in a linear regression model when the errors are a function of long-range-dependent Gaussian random variables. These representations are then used to address some of the efficiency robustness properties of L-estimators compared to the least-squares estimator. It is observed that under the Gaussian error distribution, each member of the class has the same asymptotic efficiency as that of the least-squares estimator. The results are obtained as a consequence of the asymptotic uniform linearity of some weighted empirical processes based on long-range-dependent random variables.     

Semiparametric estimation for seasonal long-memory time series using generalized exponential models

We consider a generalized exponential (GEXP) model in the frequency domain for modeling seasonal long-memory time series. This model generalizes the fractional exponential (FEXP) model [Beran, J., 1993. Fitting long-memory models by generalized linear regression. Biometrika 80, 817–822] to allow the singularity in the spectral density occurring at an arbitrary frequency for modeling persistent seasonality and business cycles. Moreover, the short-memory structure of this model is characterized by the Bloomfield [1973. An exponential model for the spectrum of a scalar time series. Biometrika 60, 217–226] model, which has a fairly flexible semiparametric form. The proposed model includes fractionally integrated processes, Bloomfield models, FEXP models as well as GARMA models [Gray, H.L., Zhang, N.-F., Woodward, W.A., 1989. On generalized fractional processes. J. Time Ser. Anal. 10, 233–257] as special cases. We develop a simple regression method for estimating the seasonal long-memory parameter. The asymptotic bias and variance of the corresponding long-memory estimator are derived. Our methodology is applied to a sunspot data set and an Internet traffic data set for illustration.