整体观与科学——中国传统思维整体观的现实意义

科学的发展使得机械论的整体观完全落伍,新的整体观正在兴起,从可分离分割的、整体是部分的结果的机械整体观转变为不可分离的、部分依赖整体才能存在的新整体观。这种整体观正是东方思维下的整体观。中国传统思维上的"天人合一"的整体观在科学中逐渐呈现出它的现实意义。     

大学生课余运动训练的发展及对策研究

目前高校体育工作中,比较重视高水平运动队工作,而忽视普通大学生的竞技运动水平的提高。本文从多个视角分析其产生的客观与主观原因,并就如何加强普通大学生的课余运动训练提出了改革思路与发展对策。     

关于推进我国利率市场化的探讨

随着我国改革开放的进一步深入,尤其是金融市场的对外开放,实现利率市场化成为我国推进社会主义市场经济和参与国际金融市场的必要条件。1996年放开银行间同业拆借利率以来,我国开始有步骤地实施利率市场化,取得了明显的成绩。但就目前来看,利率市场化改革远未完成,还存在一些制约因素。要达到利率市场化目标,应进一步完善和发展金融市场,为利率市场化提供运行机制;加强金融监管,确保市场的公平透明;提高央行货币政策的独立性,减少政府干预;造就一个较能有效进行自我管理的银行体系,培育健康的市场主体。     

Electrodeposition and characterization of thermoelectric Bi<Subscript>2</Subscript>Se<Subscript>3</Subscript> thin films

Bi₂Se₃ thin films were electrochemically deposited on Ti and indium tin oxide-coated glass substrates, respectively, at room temperature, using Bi(NO₃)₃·5H₂O and SeO₂ as starting materials in diluted HNO₃ solution. A conventional three-electrode cell was used with a platinum sheet as a counter electrode, and a saturated calomel electrode was used as a reference electrode. The films were annealed in argon atmosphere. The influence of cold isostatic pressing before annealing on the microstructure and thermoelectric properties of the films was investigated. X-ray diffraction analysis indicates that the film grown on the indium tin oxide-coated glass substrate is pure rhombohedral Bi₂Se₃, and the film grown on the Ti substrate consists of both rhombohedral and orthorhombic Bi₂Se₃.     

基于数值模拟的语言计算方法

为了描述模糊信息并建立模糊逻辑,研究了基于扩展原理和符号化模型的语言计算方法,提出基于数值模拟的对称分布语言变量表示及计算模型.该模型用特征值和标准方差二维数值反映语言的共性和特性.为了扩大运用范围,针对用任意三角模糊数表示的语言变量,提出基础语言集的寻找方法,以实现语言变量统一,完成模糊语言之间的逻辑运算.在此基础上...     

Sedimentation processes and sedimentary characteristics of tidal bores along the north bank of the Qiantang Estuary

A tidal bore is a unique Earth surface process, characterized by its highly destructive energy, predictable periodicities and magni-tudes, and the production of characteristic sedimentary features. Tidal bores and associated rapid flood flows are highly turbulent flows of the upper-flow regime with a velocity over several meters per second. Reynolds (Re) and Froude (Fr) numbers, respectively, are larger than 104 and 1.0, making them significantly different from regular tidal flows but analogous to turbidity currents. Until now, understanding of tidal-bore depositional processes and products has been limited because of the difficulty and hazards involved with gauging tidal bores directly. The Qiantang bore is known as the largest breaking bore in the world. Field surveys were carried out in May 2010, along the north bank of the Qiantang Estuary to observe the occurrence of peak bores, including regular observations of current, water level and turbidity at the main channel. Several short cores were sampled on the intertidal flats to study the characteristic sedimentary features of tidal bores. Hydrodynamic and sedimentological studies show that the processes of sediment resuspension, transport and deposition are controlled primarily by the tidal bores, and the subsequent abruptly accelerated and decelerated flood flows, which only account for one tenth of each semidiurnal tidal cycle in the estuary. Tidal-bore deposits are generally poorly sorted because of rapid sedimentation after highly mixed suspension by intense turbulence. This behavior is characteristic of the absence of tractive-current depositional components in a C-M diagram. It also goes along with well-developed massive bedding, graded bedding, basal erosion structures, convolute bedding and dewatering structures. Together, these sedimentary features can constitute fingerprinting of turbidites, widely distributed in the deep-water environment. However, a tidal bore is triggered by intensely deformed tidal waves propagating into a shallow-water environment, which returns to regular tidal flows rapidly after the passage of the bore head. The tidal-bore deposits are usually bounded by the intertidal-flat deposits with typical tidal beddings at the top and on both flanks. The difference between tidal-bore deposits (TBD) and tidal sandy/muddy deposits (TSD/TMD) is evident not only in sedimentary structures, but also in the grain-size composition. They can be clearly distinguished in grain-size bivariate plots, typically the plot of mean grain size vs. standard deviation (or sorting). Some trend variations generally exist in mean grain size with TBD>TSD>TMD, sorting with TMD>TBD>TSD (larger value indicating poorer sorting), and both skewness and kurtosis with TSD>TBD>TMD. These findings will undoubtedly shed new light on our understanding of tidal-bore sedimentology, ancient tidal-bore sedimentary facies and environments, and related oil-and-gas field prospecting.     

国内外旅游景区人力资源开发与管理模式研究——以美国迪斯尼乐园和中国深圳世界之窗、华侨城为例

本文简要介绍了美国迪斯尼乐园和中国深圳世界之窗、华侨城的人力资源开发与管理模式,分析了它们取得成功的经验,力求为促进国内其他旅游景区的人力资源开发与管理提供一点可供参考的思路.     

Special issue on toxic metal pollution

Metals and metalloids are an integral part of the Earth’s crust.Some of these elements are of great concern due to their high toxicity and threat to humans,wildlife,and the ecosystem.For simplicity,the term toxic metals is adopted to represnt both     

弗莱明对科学技术的贡献

本文简述了弗莱明的生平,回顾了他在爱迪生效应的基础上深入研究,适应无线电报发展的需要,发明真空二极管的经历,并介绍了他在科学技术上的其他贡献,说明了他的灵感来自于长期的积累,他的勤奋努力和严谨作风值得后人学习.     

A line search filter inexact SQP method for nonlinear equality constrained optimization

This paper proposes an inexact SQP method in association with line search filter technique for solving nonlinear equality constrained optimization.For large-scale applications,it is expensive to get an exact search direction,and hence the authors use an inexact method that finds an approximate solution satisfying some appropriate conditions.The global convergence of the proposed algorithm is established by using line search filter technique.The second-order correction step is used to overcome the Maratos effect,while the line search filter inexact SQP method has q-superlinear local convergence rate.Finally,the results of numerical experiments indicate that the proposed method is efficient for the given test problems.