关于建筑学专业人才素质培养的探讨

针对高等学校素质教育的要求 ,结合建筑学专业特点 ,提出应加强人文与艺术素质及创造精神与创造能力的培养 ,还应重视体现职业精神的社会责任感 ,以及竞争与协同能力等非智力因素的培养     

A relative error-based estimation with an increasing number of parameters

The least product relative error (LPRE) estimator and test statistic to test linear hypotheses of regression parameters in the multiplicative regression model are studied when the number of covariate variables increases with the sample size. Some properties of the LPRE estimator and test statistic are obtained such as consistency, Bahadur presentation, and asymptotic distributions. Furthermore, we extend the LPRE to a more general relative error criterion and provide their statistical properties. Numerical studies including simulations and two real examples show that the proposed estimation performs well.     

Performance evaluation of propensity score methods for estimating average treatment effects with multi-level treatments*

The propensity score (PS) method is widely used to estimate the average treatment effect (TE) in observational studies. However, it is generally confined to the binary treatment assignment. In an extension to the settings of a multi-level treatment, Imbens proposed a generalized propensity score which is the conditional probability of receiving a particular level of the treatment given pre-treatment variables. The average TE can then be estimated by conditioning solely on the generalized PS under the assumption of weak unconfoundedness. In the present work, we adopted this approach and conducted extensive simulations to evaluate the performance of several methods using the generalized PS, including subclassification, matching, inverse probability of treatment weighting (IPTW), and covariate adjustment. Compared with other methods, IPTW had the preferred overall performance. We then applied these methods to a retrospective cohort study of 228,876 pregnant women. The impact of the exposure to different types of the antidepressant medications (no exposure, selective serotonin reuptake inhibitor (SSRI) only, non-SSRI only, and both) during pregnancy on several important infant outcomes (birth weight, gestation age, preterm labor, and respiratory distress) were assessed.     

利率期限结构特征的拟合与预测

本文从经典利率期限结构模型和数量利率期限结构模型中选取了三因子Vasicek模型、三因子CIR模型、多项式样条模型、指数样条模型、DL模型和动态SV模型等6个应用广泛且具有代表性的利率期限结构模型,分别基于2008年7月至2014年3月中国和美国市场的月度国债收益率数据进行拟合与预测,并采用均方误差(RMSE)和平均绝对误差(MAE)对实证效果进行判别。结果表明,DL模型在针对中国市场和美国市场数据的拟合与预测方面能力均十分突出且效果稳定,指数样条模型次之,而其他模型则在利率期限结构特征的刻画效果方面存在更强的数据依赖与能力不足问题。本文的结论能够为实证研究利率期限结构特征的模型选取提供科学依据和数据支持。     

An NMF-framework for Unifying Posterior Probabilistic Clustering and Probabilistic Latent Semantic Indexing

In document clustering, a document may be assigned to multiple clusters and the probabilities of a document belonging to different clusters are directly normalized. We propose a new Posterior Probabilistic Clustering (PPC) model that has this normalization property. The clustering model is based on Nonnegative Matrix Factorization (NMF) and flexible such that if we use class conditional probability normalization, the model reduces to Probabilistic Latent Semantic Indexing (PLSI). Systematic comparison and evaluation indicates that PPC is competitive with other state-of-art clustering methods. Furthermore, the results of PPC are more sparse and orthogonal, both of which are highly desirable.     

基于多案例研究的拼凑理念、模式双元与替代式创新

异于以往模仿或合作创新等“外源式”研究视角,从“资源内生式”视角探索了资源匮乏下中小企业的创新模式——拼凑.借鉴模式双元学习的观点,表明拼凑理念是一种“创意层的探索”与“资源层的利用”的结合,通过组织学习和平衡机理促进创新.通过对3个典型案例的研究发现:中小企业可通过树立拼凑理念促进新创意探索与手边资源利用的模式双元;模式双元的平衡与失衡将产生不同的创新效果,“高高”双元(资源高利用和创意高探索)可以带来“新颖”创新;“高低”双元(资源高利用和创意低探索)则更容易产生“凑合”创新;拼凑理念更容易形成非标准、快速、低成本的替代式创新.     

维度技术在XBRL分类标准中的应用研究

XBRL是应用于会计信息化领域的最新技术,而维度技术是XBRL技术研究的热点和难点之一。本文通过对典型XBRL分类标准的分析研究,针对其应用过程中存在的报表业务内容割裂和冗余元素过多等共性问题,采用XBRL维度技术,提出基于空超立方体实现非维度化基础元素的维度化解决方案和基于空维度去除冗余元素的解决方案,在不改变原有应用方式的基础上,加强了分类标准的业务完整性和实例文档的可验证性。     

“中加少数民族/原住民经济社会发展学术研讨会”综述

2011年10月26日,由西南民族大学和加拿大研究协会共同举办,加拿大驻华使馆和加拿大驻重庆领事馆支持的“中加少数民族／原住民经济社会发展学术研讨会”在西南民族大学隆重召开。     

为全面建成小康社会打下具有决定性意义的基础

科学把握发展规律,主动适应环境变化,有效化解各种矛盾,推进我国改革开放和社会主义现代化建设,夯实全面建成小康社会的物质基础、社会基础、体制基础和文化基础,夯实中共的执政基础,使我国全面建成小康社会的基础更加牢固。     

二元体制下的农民工社会保护:一个研究综述

跨入新世纪以来学术界、媒体以及政府对农民工这个弱势群体的生存质量都从不同侧面给予了极大的关注.学者们对农民工社会保护的研究,见仁见智.本文从农民工问题的提及与总体解决思路、农民工的公民权问题、就业歧视、社会救助、补会保险以及公共服务等六个方面对学者们的研究作一综述,并对研究现状作了评价.