"意境美"在中国现代雕塑陶艺中的运用

"意境"是中华民族在长期艺术实践中形成的一种审美理想。它的表现需要借助于基础造型元素线条、块、面、空间关系及写意手法的运用。文章重点从线、面、空间创作方法和写意的表现手法论述意境在中国现代雕塑陶艺中的运用,从而论证意境在艺术表现中的重要性。     

一种新型交织器的设计

在简单介绍两种常用交织器的基础上,给出了随机分组交织器的设计,并进行了计算机仿真。结果表明,此交织器设计简单,占用内存少,性能明显优于分组交织器,而仅次于随机交织器。     

“捣衣砧上拂还来”释疑

《春江花月夜》中“捣衣砧上拂还来”写的是庭院内之景而非江边之景。捣衣非洗衣、捶衣,而是捣帛或捣 素;捣衣砧非洗衣、捶衣石,而是捣衣时的垫石,它不在水边而在庭院;以捣衣入诗表现的是闺怨闺思,对本诗相思离 别的主题起着一定的暗示作用。     

Causality: a Statistical View

Statistical aspects of causality are reviewed in simple form and the impact of recent work discussed. Three distinct notions of causality are set out and implications for densities and for linear dependencies explained. The importance of appreciating the possibility of effect modifiers is stressed, be they intermediate variables, background variables or unobserved confounders. In many contexts the issue of unobserved confounders is salient. The difficulties of interpretation when there are joint effects are discussed and possible modifications of analysis explained. The dangers of uncritical conditioning and marginalization over intermediate response variables are set out and some of the problems of generalizing conclusions to populations and individuals explained. In general terms the importance of search for possibly causal variables is stressed but the need for caution is emphasized.     

敞开式高压隔离开关接线端子过热分析及现场处理方案

为了保障电力系统运行安全,提高故障检修效率,对某变电站的多起敞开式高压隔离开关接线端子过热故障进行分析。首先进行故障检查,然后计算通流能力、校核拧紧扭矩,最后提出了现场处理方案,并进行有限元仿真分析。结果表明:1）过热原因为盲孔螺纹连接失效导致的螺栓轴向预紧力降低;2）提出了重新打孔和改造旧孔2种提高接线端子紧固螺栓轴向预紧力的现场解决方案;3）2种方案均具有理论可行性,重新打孔方案和改造旧孔方案的整体 实施难度相差不大,温控效果更好,16个月内重新打孔方案的最大温升为7.8 ℃,改造旧孔方案的最大温升为9.1 ℃。研究 所提的重新打孔方案是敞开式高压隔离开关接线端子过热故障现场处理的一种较为高效、实用的方法,可为其他变电站类似事故处理提供参考。     

批发市场对农产品供应链的信息阻滞及其克服

在分析农产品批发市场的历史作用和现状的基础上,详细阐述了以批发市场为核心的农产品流通体系的特点,及对市场信息的阻滞影响。同时指出培育农产品供应链核心企业,并取代农产品批发市场发挥核心作用．是解决供应链信息阻滞的有效途径之一,最后探讨了围绕核心企业来建立农产品供应链的两种运作模式。     

Robustness to the unavailability of data in block designs

We present general results for finding or boundingt _maxB , the maximum number of arbitrary whole blocks of observations which can be removed from a block design, and still leave all of the elementary treatment contrasts estimable. The block sizes may be larger than the number of treatments. The results are applied to BBDs, reinforced BIBDs and BBDs, BTIBDs, and a series of variance balanced incomplete block designs with two block sizes. Also given for most of these designs, are results fort _max, the maximum number of arbitrary, scattered observations that can become unavailable, and still leave all of the elementary treatment contrasts estimable.The work was undertaken while Dr. Whittinghill was visiting Ohio State University, and supported by a grant from the Natural Sciences Division, Colby College, Waterville, Maine.     

国外历史街区的保护

概述了联合国教科文组织和发达国家在历史街区保护的立法、行政管理、公众参与及资金筹集等方面的做法和经验;分析了城市建设与历史遗产保护之间的关系;认为二者是互为联系,互相促进的,处理好这一关系,城市将得以协调发展.     

最优化理论与方法在油田产量优化研究中的改进

结合油田生产实际对最优化理论与方法在油田产量优化中的应用作了切实的改进，提出了新的模型设计，并以某油田的数据参数为例对改进后的优化模型进行了实证分析，取得了较好的模拟效果。     

由临街地价推算区片价的方法探讨

如何利用临街样点地价推算区片平均地价及基准地价始终是城镇基准地价评估的一个难点。文章利用赤峰市的实际调查数据,分别采用临街贡献率和面积加权两种方法推算区片平均地价,并采用回归分析方法探讨区片价与临街地价之间的关系,结果证明两种方法所推算的区片平均价是基本一致的,而且区片价与临街地价之间呈“反S”曲线关系。