从农业文明特征看中国传统建筑的设计意念

农业社会生活是中国传统社会的物质文化、制度文化和观念文化创造、发展的基础。农业文明深刻影响中国传统文化民族性格、心理及社会结构特征,进而影响着中国建筑的设计理念,从而产生并发展出源远流长而丰富深刻的建筑美学思想。从华夏民族重实际轻玄想的务实精神、师法自然、恒久变易、封闭、保守的围合心态,及家国同构的社会结构特征,论述中国传统建筑迥异于西方建筑的以人为本、因任自然、反本开新、重重包围、院院相套及门、堂分立的设计意念。     

Local Linear Estimation for Time-Dependent Coefficients in Cox's Regression Models

This article develops a local partial likelihood technique to estimate the time-dependent coefficients in Cox's regression model. The basic idea is a simple extension of the local linear fitting technique used in the scatterplot smoothing. The coefficients are estimated locally based on the partial likelihood in a window around each time point. Multiple time-dependent covariates are incorporated in the local partial likelihood procedure. The procedure is useful as a diagnostic tool and can be used in uncovering time-dependencies or departure from the proportional hazards model. The programming involved in the local partial likelihood estimation is relatively simple and it can be modified with few efforts from the existing programs for the proportional hazards model. The asymptotic properties of the resulting estimator are established and compared with those from the local constant fitting. A consistent estimator of the asymptotic variance is also proposed. The approach is illustrated by a real data set from the study of gastric cancer patients and a simulation study is also presented.     

《逻辑哲学论》的逻辑观

维特根斯坦在《逻辑哲学论》中所提出的逻辑命题是重言、是形式的观点，对于本世纪哲学家们的逻辑观给予了决定性的影响。本文对《逻辑哲学论》的逻辑观、它的基本的理论假定、理论背景及影响作了探讨，并就它的评价问题阐明了个人的意见     

关于Ricci对称的黎曼流形的孤立性

使用P.Li的Sobolev不等式和Lp估计方法，研究Ricci对称的黎曼流形的量子化现象．证明了对于紧致的具有正数量曲率的Ricci对称的黎曼流形M，存在一个常数A，当M的保圆曲率张量的La/2模小于A时，M为常曲率空间．     

Bayesian consistency for regression models under a supremum distance

This paper studies the consistency of Bayesian nonparametric regression models. We concentrate on the use of the sup metric and dealing with non-stochastic, i.e. designed, covariate values. We illustrate our results on a normal mean regression function and demonstrate the usefulness of a model based on piecewise constant functions.     

教学督导机制促进“三风”常态化的数据仿真与模型构建

为解决师生精力投入不足,教学督导机制开始作为高校内部教学质量保障体系的重要组成部分开始运作,它是一个由教学专家组成的机构,具有检查性、指导性、咨询性的作用。实践证明,加强高校教学督导工作可以沟通、协调教学工作,实现各部门各环节之间、领导与教工之间、教师与学生之间的平衡,促进教学工作的顺利开展。     

三维立体数据表的动态趋势聚类研究——以中国现代服务业为实例

在信息技术快速发展的今天,数据形式的多样性使得对问题和现象的研究不再局限于单纯利用截面数据或时间序列数据进行分析。文章所研究的是一种由截面数据和时间序列数据共同组成的具有立体数据结构的三维立体数据的分类问题,以定义的常数型均值以及动态非相似度为基础对其进行聚类分析。同时,以中国现代服务业的实际数据进行相应的实例验证。结果证明,该种方法能有效的从规模和趋势上对三维立体数据进行分类。     

不完备市场中再保险-投资的M-V及M-VaR最优策略

本文研究不完备市场中的保险公司再保险-投资问题.在保险公司盈余过程服从扩散过程的假设及不完备市场条件下,通过求解带约束的二次优化问题和二次优化对偶问题,分别得到均值-方差(M-V)模型和均值-在险价值(M-VaR)模型下保险公司再保险-投资问题的最优常数再调整策略及其有效前沿,对两种模型下的结论进行比较发现:两种模型下的最优常数再投资策略都表现为特定"共同基金"的倍数,但对最优倍数的选择不一定相同;两种模型下的再保险-投资有效前沿都表现为射线,但射线的起始点及斜率(风险价格)不一定相同.     

A family of skew distributions with mode-invariance through transformation of scale

Recently, a new family of skew distributions was proposed using a specific class of transformation of scale, in which the normalizing constant remains unchanged and unimodality is readily assured. In this paper, we introduce the mode invariance in this family, which allows us to easily study certain properties, including monotonicity of skewness, and incorporate various favorable properties. The entropy maximization for a skew distribution is discussed. A numerical study is also conducted.     

3，5－二溴－4－氨基苯基荧光酮离解作用的研究和离解常数的测定

本文详细研究了新显色剂３，５－二溴苯基荧光酮的离解性质，利用光度法测定其离解常数ｐｋ１，ｐｋ２，ｐｋ３，ｐｋ４分别为１．８５，５．４２，１０．５１，１２．４４．与苯基荧光酮试剂比较，该试剂分子引入溴吸电子基团，使试剂的酸性增强，与金属离子显色反应灵敏度、选择性有很大的提高。