关于心理健康结构维度的研究及理论构想

本文在分析了中外心理学家关于心理健康的涵义及评价标准的各种研究与论述后发现 ,要求得一个为大家公认的心理健康的定义和评价标准是困难的 ,但许多一致的地方又是显而易见的。在此基础上 ,作者提出心理健康结构的 7个维度 :智力正常、情绪稳定、悦纳自我、和睦他人、适应环境、目标明确、工作高效     

市场参与者预期与商品住宅价格的动态关系研究

能否科学揭示预期与房价的关系是行业健康、调控有效、决策正确的关键。建立实证计量模型后,联合运用面板数据模型、面板聚类法等分别从时间、空间变化角度对2001—2015年中国30个省(市、自治区)市场参与者预期与商品住宅价格的内在关系进行数量刻画与纵横比较,主要从时间维度、空间维度剖析了预期与房价内在联系的演化过程与地区分异规律,为房价波动、地区间房价差异、调控低效等现象给出了新的解释。结果表明：从时间维看,预期与房价的关系在4个阶段中是动态变化的,随着时间的推移,预期对房价的刺激作用不断加强;房价在4个阶段的主要影响因素是不同的。从空间维看,预期对1—4 类地区的正向影响力度存在差异,大体上表现出随房价水平的下降反而加强的趋势;宏观政策对4类地区的调控效果存在差异。     

A comparative study for robust canonical correlation methods

The aim of this study is to obtain robust canonical vectors and correlation coefficients based on the percentage bend correlation and winsorized correlation in the correlation matrix and fast consistent high breakdown (FCH), reweighted fast consistent high breakdown (RFCH), and reweighted multivariate normal (RMVN) estimators to estimate the covariance matrix and then compare these estimators with the existing estimators. In the correlation matrix of canonical correlation analysis (CCA), we present an approach that substitutes the percentage bend correlation and the winsorized correlation in place of the widely employed the Pearson correlation. Moreover, we employ the FCH, RFCH, and RMVN estimators to estimate the covariance matrix in the CCA. We conduct a simulation study and employ real data with the objective of comparing the performance of the different estimators for canonical vectors and correlation with that of our proposed approaches. The breakdown plots and independent tests are employed as differentiating criteria of the robustness and performance of the estimators. Based on our computational and real data studies, we propose suggestions and guidelines on the practical implications of our findings.     

Chi-squared tests in kth-moment sufficient dimension reduction

We present a novel approach to sufficient dimension reduction for the conditional kth moments in regression. The approach provides a computationally feasible test for the dimension of the central kth-moment subspace. In addition, we can test predictor effects without assuming any models. All test statistics proposed in the novel approach have asymptotic chi-squared distributions.     

Reducing data dimension for cluster detection

Clustering high-dimensional data is often a challenging task both because of the computational burden required to run any technique, and because the difficulty in interpreting clusters generally increases with the data dimension. In this work, a method for finding low-dimensional representations of high-dimensional data is discussed, specifically conceived to preserve possible clusters in data. It is based on the critical bandwidth, a nonparametric statistic to test unimodality, related to kernel density estimation. Some useful properties of the aforementioned statistic are enlightened and an adjustment to use it as a basis for reducing dimensionality is suggested. The method is illustrated by simulated and real data examples.     

二维B值Dirichlet级数的收敛性

研究了二维B值Dirichlet级数在收敛平面及收敛半平面上的收敛性、一致收敛性及绝对收敛性 ,给出了二维B值Dirichlet级数的相关收敛横坐标及以参数形式表示的两类Valiron(瓦里隆 )公式 .     

负反馈放大器闭环输出和开环输出问题的探讨

文章通过分析基本类型负反馈放大器闭环输出和开环输出的情况 ,得出该两种情况下负反馈放大器输出量之间的关系 ,以及其成立的条件 ,指出量纲统一对分析放大电路的重要性。     

区域可持续发展的调控及其对策研究

区域可持续发展的基本特征是其三维性和系统性。所谓三维 ,即区域可持续发展的构成要素、时间关系和空间关系 ;所谓系统 ,即区域是人地系统 ,区域可持续发展遵从系统增长、演化的规律。因此 ,区域可持续发展理论 ,可以概括为三维系统理论。以此为基础 ,区域可持续发展的调控可以概括为三维系统调控 ;相应地 ,调控的对策也必须具备三维性和系统性。目前 ,区域可持续发展调控的总体对策应为 :立足要素维 ,拓展空间维 ,推进时间维 ,系统地解决区域可持续发展过程中存在的问题。     

Probabilistic ‘generalization’ of functions and dimension-based uniform convergence results

In this largely expository article, we highlight the significance of various types of dimension for obtaining uniform convergence results in probability theory and we demonstrate how these results lead to certain notions of generalization for classes of binary-valued and real-valued functions. We also present new results on the generalization ability of certain types of artificial neural networks with real output.     

社会工作实务效果优化的路径探讨与分析

在社会工作实务过程中,实务效果的最大优化是一个基本而关键的主题。为了更有效的帮助服务对象,使服务对象从问题中走出来,让自己的日常生活达到一种和谐的状态,运用具体的案例和实务经验,分别从服务理念转变、服务介入、服务进展以及服务维持等四个维度来分析了如何优化辅导服务,达到良好的辅导效果。