RKPM方法关于非线性椭圆边值问题的的误差估计

通过重构核近似的基本原理简单介绍了重构核质点法(reproducing kernel particle meshfree methods,RKPM),关于非线性椭圆方程的Dirichlet问题,结合重构核近似的理论误差估计,研究了在满足一定条件下的RKPM法对于该类问题的解的误差估计.     

Radial point collocation method （RPCM） for solving convection-diffusion problems

INTRODUCTION Meshfree methods are increasingly becoming popular as they are effective for dealing with com-putational mechanics problems including both solid and fluid problems. Most of various approaches proposed in (Liu, 2002) are based on Galerkin form (weak form) which need background meshes for numerical integrations, and are actually not truly meshfree methods. Other approaches are based on collocation form (strong form), such as finite point method (FPM) (Onate et al., 1996), ra…     

桩承土工织物加筋地基的研究与工程应用综述

当软弱土层上要建设构筑物时，岩土工程师们常常必须解决地基承载力、沉降、差异沉降、稳定及侧向位移的难题，传统单一型式的复合地基往往不能满足要求，而桩承土工织物加筋联合复合地基可以很好地应用于工程实际以解决这些难题。章对桩承土工织物加筋复合地基分发展过程、工程应用、计算方法及目前存在的问题等几方面进行综述，指出目前桩承土工织物加筋复合地基的作用机理、承载力和沉降设计计算理论尚未有深入的研究；及工后沉降的预测和控制也尚未有人研究过。     

农业硕士专业学位研究生教学案例评价指标体系

为客观、准确地评价“农业硕士专业学位研究生教学案例”,本项目采用资料分析法、访谈法等方法,在借鉴前人对科技论文和案例评价指标的基础上初步建立了教学案例的评价指标体系。本指标体系包括文面结构、案例素材、所拟问题、案例内容、写作技术等5个一级指标,每个一级指标下各有4个二级指标,同时给出了每个二级指标的评价等级。该评价体系为案例的撰写和选择提供了参考。     

深层搅拌及帷幕灌浆技术在某水库加固中的应用

某水库是一座以灌溉为主,兼有防洪、养殖、旅游等综合利用的小(2)型水库。水库运行多年,存在坝体填筑质量不满足规范要求,下游坝坡散浸,大坝坝体处理不满足规范要求,透水性较大,坝基渗漏等问题。根据工程重要性及现场试验结果,采用深层搅拌成墙及帷幕灌浆技术解决渗漏问题。     

薄壁结构失稳屈曲荷载预测的GPM方法研究

以工程实际应用为研究背景,注重试验数据变化规律的研究,分析薄壁结构失稳试验曲线的固有特征,提出以曲线的斜率为零确定薄壁结构屈曲荷载的新方法;同时提出了利用灰色多项式拟合曲线割线的斜率建立灰色预测模型的新思路,可解决GM(1,1)模型无法解决的预测值为零或趋于无穷大等禁区内的问题;试验数据分析结果表明,GPM方法是预测这类问题的有效方法之一。     

地理教学中的环境教育方法探讨

随着环境问题日趋严重,环境教育已成为思想教育的主要内容之一。环境教育是地理教师不可推卸的责任,实施环境教育重在方法。在课堂上可以采用渗透法、比较法、联系实际法、电化教学法、榜样示范法和专题讲座法,利用课外活动时间可以组织学生进行环境调查和分析,使学生了解中国的环境问题,树立环境意识和环境道德观念。     

A gravity similitude model for studying steep rock slopes

A method of a large experimental model coupled with a smaller one and an equivalent replacement method are adopted to study the deformation and the failure mechanism of a steep rock slope,in order to solve the difficult problems in space gravity similitude of the experimental model on steep rock slope with weak layers.The experimental results on the Lianziya Precipice of the Yangtze Three Gorges are in general agreement with the field observations.The experimental method adopted is proved to be successful in molding the complex geological condition especially with the weak layers.     

本科信息经济学课程教学改革研究

目前,我国本科信息经济学课程教学存在着教学内容有争议、教材编写有分歧以及教学方法单一等问题。文章从整合教学内容、编写案例研讨教材、改革教学方法和提高教师素质四个方面提出了信息经济学教学的改进措施,重点阐述了案例教学法、研讨教学法和双向能动教学法的内涵及在信息经济学教学中的应用。     

Crucial problems on security assessment of a building site adjacent to an excavated high slope

The subject of this work is the assessment on the stability of an excavated high slope in order to insure the security of the building site adjacent to the slope,which is frequently encountered in town construction in mountainous areas due to terrain limit.On the base of some typical engineering cases in Chongqing,several crucial problems on security assessment of building site adjacent to an excavated high slope,including the natural geological conditions and man-destroyed degree,engineering environment,potential failure pattern of the high slope,calculation parameters and analysis methods,are roundly discussed.It is demonstrated that the conclusion of security assessment can be determined according to the aspects above-mentioned,and the security assessment is one of the fundamental data to insure the safety of the related construction,site and buildings.     

Teaching Information Systems Management Skills: Using Integrated Projects and Case Studies

University courses in Computer Science (CS) and Information Systems (IS) are often criticized by industry for concentrating on conceptual learning while failing to provide their students with experience and grounding in managerial skills. This paper describes and discusses an innovative course In this paper the term “course” will be used to refer to a single integrated unit of study. In New Zealand such units are often referred to as “papers”. These courses can be combined together, according to various rules, to form a “course of study” which will lead to a qualification. At Massey University, a degree is comprised of 24 such courses.structure which has been developed in order to ground the teaching of IS management theory in its local context by interlinking practical projects and case studies in local organizations. The student projects are used to generate a large “cross-sectional” case study which describes several IS management problems that are occurring simultaneously in the same organization. Students are required to integrate their analysis of the problems and to recommend an appropriate series of responses which will tackle all the situations. The paper describes the rationale and organization of the course, the results of an evaluation of its effectiveness, and discusses some of the problems that were encountered during its implementation.     

Guest Review:Potential theory method for 3D crack and contact problems of multi-field coupled media:A survey

This paper presents an overview of the recent progress of potential theory method in the analysis of mixed boundary value problems mainly stemming from three-dimensional crack or contact problems of multi-field coupled media.This method was used to derive a series of exact three dimensional solutions which should be of great theoretical significance because most of them usually cannot be derived by other methods such as the transform method and the trial-and-error method. Further, many solutions are obtained in terms of elementary functions that enable us to treat more complicated problems easily. It is pointed out here that the method is usually only applicable to media characterizing transverse isotropy,from which, however, the results for the isotropic case can be readily obtained.     

本科生管理案例分时段教学法研究

该文针对工商管理专业本科段管理案例教学中存在的学生准备不够充分、参与不足现象,提出了管理案例分时段教学法的构想。这种方法把整个教学过程分为课前准备时段、课堂理论与方法学习时段、课余消化吸收与团队学习讨论时段、课堂汇报/辩论时段等四个相互联系的时段。文章给出了管理案例教学时段划分的方法,探讨了每一时段的教学组织方式和内容。     

Guest Review:Potential theory method for 3D crack and contact problems of multi-field coupled media: A survey

This paper presents an overview of the recent progress of potential theory method in the analysis of mixed boundary value problems mainly stemming from three-dimensional crack or contact problems of multi-field coupled media. This method was used to derive a series of exact three dimensional solutions which should be of great theoretical significance because most of them usually cannot be derived by other methods such as the transform method and the trial-and-error method. Further, many solutions are obtained in terms of elementary functions that enable us to treat more complicated problems easily. It is pointed out here that the method is usually only applicable to media characterizing transverse isotropy, from which, however, the results for the isotropic case can be readily obtained.     

河南省高校声乐教育存在的问题及应对策略

河南省是声乐教育大省,却不是声乐教育强省,目前仍存在着如生源质量逐年下滑,选修课程偏少,漠视流行歌曲演唱,师生比过分悬殊和单向度教学等招生、教学内容、教学方式方法层面的诸多问题。认识问题是为了更好地解决问题,诸如收紧招生规模,调整招生层次,提高选修课比重,加强与市场需求接轨的流行音乐学科建设等应对策略的提出便是如此。     

基于问题解决的成人教学模式研究

基于问题解决的教学模式符合成人学员的学习需求,在成人教学领域中具有广泛的应用潜力。问卷调查发现,一些成人院校基于问题解决的教学模式应用现状并不理想,教学质量难以满足学员发展诉求。认知水平不高、步骤不够严谨和教学方法失当是造成目前成人教学质量不尽如人意的主要原因。为改善基于问题解决的教学模式在成人教学中的应用效果,应提高理论认知水平、增强应用自觉性,夯实提出问题、界定问题、分析问题和总结规律等应用环节,协同引导式、探究式、操作式、合作式和案例式等教学方法。     

PBL教学法在高校思想政治理论课教学中的运用

PBL（基于问题的学习）是一种先进的教学方法,它融合了启发式、参与式、互动式、案例式、研究式等教学方法,遵循了思想政治教育中的“教育与自我教育相结合”“坚持解决思想问题与解决实际问题相结合”“坚持政治理论教育与社会实践相结合”的教育原则.在高校思想政治理论课教学中开展PBL教学法有众多优势,但也面临着一些需要解决的问题;解决这些问题,恰如其分地运用这一方法,对提高思想政治理论课教学的实效性具有重要作用.     

Potential theory method for 3D crack and contact problems of multi-field coupled media: A survey

This paper presents an overview of the recent progress of potential theory method in the analysis of mixed boundary value problems mainly stemming from three-dimensional crack or contact problems of multi-field coupled media. This method was used to derive a series of exact three dimensional solutions which should be of great theoretical significance because most of them usually cannot be derived by other methods such as the transform method and the trial-and-error method. Further, many solutions are obtained in terms of elementary functions that enable us to treat more complicated problems easily. It is pointed out here that the method is usually only applicable to media characterizing transverse isotropy, from which, however, the results for the isotropic case can be readily obtained. Project (No. 10372088) supported by the National Natural Science Foundation of China     

边坡稳定性最小安全系数的优化求解

边坡稳定性分析中相应于最小安全系数的临界滑裂面可以通过运用最优化方法求得，圆弧和任意形状滑裂面均可用一系列参数来描述，其安全系数则可表达为这些参数的函数．运用最优化方法，结合边坡稳定性分析的常用土力学方法求此类函数的极小值     

聚能射流数值模拟中的几项关键技术

聚能射流形成的数值模拟,涉及到大变形、高应变率以及材料的破坏,传统的拉格朗日或欧拉方法在解决该问题均有很大的局限性,先后发展了网格重分、ALE、SPH等方法,以及界面处理技术,各有所长,但尚未完全解决,而在实际工作中,切合实际的药型罩介质本构关系则是聚能射流数值模拟的关键,高效并行计算与可视化则是聚能射流数值模拟的必由之路,并阐述了聚能射流数值模拟的发展趋势．