应用程序中插入OLE对象的方法

该文介绍了在应用程序中使用OLE技术来来插入OLE对象的两种方法,第一种方法是使用微软的OLE容器控件,第二种方法介绍了在不能使用OLE容器控件的时候,如何通过调用API函数插入OLE对象。     

用OLE对象扩展Authorware功能的方法

本文介绍了OLE技术及在Authorware中创建OLE对象的方法，并给出了在Author-ware中链接和嵌入一个PowerPoint设计的OLE对象的应用实例。     

OLE技术及其在Foxpro中管理AutoCAD图样

本文简述Windows的OLE技术，并就OLE技术用于Foxpro中管理AutoCAD图样进行了探讨，较详细的列举了实现的方法。     

OLE技术在多媒体超文本系统中的应用

OLE（对象链接和嵌入）技术是Microsoft Windows3．1的重要技术之一，微软公司的数据库产品Foxpro2.5 for Windows和Access都应用OLE技术实现了多媒体的扩展，本文介绍OLE技术在多媒体超文本系统中应用的基本思路和实现途径。     

VFP中多媒体数据的高效处理技巧

Visual FoxPro中应用OLE技术所存在的问题 Vlsual FoxPro(以下简称VFP)是一种数据库应用程序开发系统,可利用OLE技术实现对象的链接与嵌入,为应用开发提供了广阔的空间。虽然VFP提供的OLE编程方式简单快捷,但在实际运行     

VFP中多媒体数据的高效处理技巧

一.Visual FoxPro中应用OLE技术所存在的问题 Visual FoxPro(以下简称VFP)是一种数据库应用程序开发系统,可利用OLE技术实现对象的链接与嵌入,为应用开发提供了广阔的空间。虽然VFP提供的OLE编程方式简单快捷,但在实际运行VFP程序的过程中,发现使用OLE方式处理多媒体数据运行效果并不理想,其原因在于:     

将Excel财务报表转成Notes文档的实现

本文介绍了Lotus Notes与外部数据的连接技术以及Notes对OLE技术的支持，同时还介绍了利用OLE技术将Excel格式的财务报表转换成Notes文档的方法，并给出了应用实例。     

OLE和开发工具

简介 这篇文章总结了OLE在开发环境中的功能和使用方法。这篇文章的目的是①说明对于Microsoft Windows上开发人员来说,使用OLE有哪些好处。②按功能划分出OLE的各个部分。③Microsoft Windows上的开发人员支持许多OLE函数,本文将说明如何正确评估那些建立在这些函数上的开发环境、OLE控制和附加产品。这样本文也就说明了仅仅认识到“OLE支持”是不够的,还必须认识到OLE技术的其它功能。     

VFP中多媒体数据的高效处理技巧

一.Visual FoxPro中应用OLE技术所存在的问题 Visual FoxPro(以下简称VFP)是一种数据库应用程序开发系统,可利用OLE技术实现对象的链接与嵌入,为应用开发提供了广阔的空间。虽然VFP提供的OLE编程方式简单快捷,但在实际运行VFP程序的过程中,发现使用OLE方式处理多媒体数据运行效果并不理想,其原因在于: 1.运行速度慢 在VFP中利用OLE方法处理多媒体数据,访问磁盘的次数明显增加。由于频繁地读取磁盘数     

基于ATL的OLE DB数据应用程序设计

数据库技术在资源库建设中应用十分广泛，访问数据库的方法也较多。OLE DB是Microsoft提供的数据库接口．它是基于COM接口，具有良好的健壮型。通过OLE DB可以非常方便地访问关系型数据库和非关系型数据库。本文对OLE DB作了一定的介绍．结合具体的实例给出了通过OLE DB访问MS Access数据库的实现。     

A method of defuzzification based on the approach of areas' ratio

The new method of defuzzification of output parameters from the base of fuzzy rules for a Mamdani fuzzy controller is given in the paper. The peculiarity of the method is the usage of the universal equation for the area computation of the geometric shapes. During the realization of fuzzy inference linguistic terms, the structure changes from the triangular into a trapezoidal shape. That is why the universal equation is used. The method is limited and can be used only for the triangular and trapezoidal membership functions. Gaussian functions can also be used while modifying the proposed method. Traditional defuzzification models such as Middle of Maxima − MoM, First of Maxima − FoM, Last of Maxima − LoM, First of Suppport − FoS, Last of Support − LoS, Middle of Support − MoS, Center of Sums − CoS, Model of Height − MoH have a number of systematic errors: curse of dimensionality, partition of unity condition and absence of additivity. The above-mentioned methods can be seen as Center of Gravity − CoG, which has the same errors. These errors lead to the fact that accuracy of fuzzy systems decreases, because during the training root mean square error increases. One of the reasons that provokes the errors is that some of the activated fuzzy rules are excluded from the fuzzy inference. It is also possible to increase the accuracy of the fuzzy system through properties of continuity. The proposed method guarantees fulfilling of the property of continuity, as the intersection point of the adjustment linguistic terms equals 0.5 when a parametrized membership function is used. The causes of errors and a way to delete them are reviewed in the paper. The proposed method excludes errors which are inherent to the traditional and non- traditional models of defuzzification. Comparative analysis of the proposed method of defuzzification with traditional and non-traditional models shows its effectiveness.     

Ethical and legal issues for writing researchers in an age of media convergence

With the convergence of digital media into ever-widening social and technological networks for creation and distribution, the contexts for writing and the study of writing and writers have certainly changed. Researchers must navigate a dense matrix of ethical and legal issues in all phases of research when studying the ever-changing processes and products of digital communications. In this article, I draw from numerous sources to articulate a few of the challenges facing digital writing researchers in this age of convergence, focusing on issues of representation (researcher, participant, third-party), issues of informed consent, and issues of copyright and fair use.     

New debates on learning support

Abstract In the present debate on knowledge management and multimedia support of human learning, the word 'mediation' (of conduct) is often used as a natural correlate and rough equivalent to the word 'mediatisation' (of information). It is suggested that the distinction between the two words points to a basic difference between two types of processes which are crucial to a much needed rethinking of the conception and design of humanmachine interaction (HCI).
A redefinition of the 'appropriateness' of media support as the quality of the help to people's self-help rather than of direct control of their behaviour is proposed. Such a redefinition implies a radical shift of paradigm allowing for approaches to human learning as a cognitive activity in its own right. Another view of technological mediation is advocated, in keeping with some recent developments in HCI.     

HUYGENS' PRINCIPLE,PHYSICS AND COMPUTERS

We discuss the emergence of topology from a consideration of set extensions in General Systems Theory. Boundaries arise in a natural way, separating independent elements or regions of the system. Our aim is a unification of Etter theory, Kron's method of Tearing and Jessel's formulation of Huygens' Principle. This should make explicit the equivalence between the objective, structural, holographic and the subjective, relative definitions of information, sought in Bowden (1994b), reprinted in this Special Issue. It connects the abstract generalisations of Schrodinger's equation and Bom's rule derived in probabilistic Etter theory with the real world of electrical and other physical phenomena in General Physical Systems Theory. This paper can be considered as a continuation of Bowden (1990; 1994a) and as a response to Bowden (1994b), reprinted in this issue.

We review the ideas behind Kron's Method of Tearing and Jessel's Principle of Secondary sources (both special cases of the above theory) and their equivalence. We follow Hiley's argument in Hiley (1996) to show how Schrodinger's equation can be thought of as specifying the evolution of (a series of) tearings in continuous space. These can be shown on a commutative diagram as a series of similarity transforms. We compare this with Etter's derivation (Etter, 1998). We describe briefly a recently published derivation of Maxwell's equations from a non-commutative algebra and show how they fit onto a related commutative diagram. Finally we make some comments on applications of the general theory to computer systems. This paper is a series of vignettes of work in progress. It is designed to point the direction of work to come in Constructive Physics.     

An approach to the synthesis of fuzzy stabilization systems with a priori unknown model of an object

A method of synthesis of fuzzy stabilization systems for a broad class of dynamic objects under the assumption that the mathematical model of the object is not known a priori is proposed. The control is formulated in the form of a proportional law of adjustment as a function of a macro-variable; the square of the Euclidean norm of the phase variables is adopted as the macro-variable. An analogous variable characterizes the distance of the object from the equilibrium position. Despite the simplicity of the control law, its sign remains constant due to the fact that the macro-variable is positive-definite over the entire phase space. The switching times of the signals are determined by fuzzy identification of the system’s dynamic modes on the basis of measurement of the derivatives of the macro-variable.     

Forage quality of savannas — Simultaneously mapping foliar protein and polyphenols for trees and grass using hyperspectral imagery

Savanna covers about two-thirds of Africa, with forage quantity and quality being important factors determining the distribution and density of wildlife and domestic stock. Testing hypotheses about the distribution of herbivores is hampered by the absence of reliable methods for measuring the variability of vegetation quality (e.g. biochemical composition) across the landscape. It is demonstrated that hyperspectral remote sensing fills this gap by revealing simultaneously the spatial variation of foliar nitrogen (crude protein) as well as the total amount of polyphenols, in grasses and trees. For the first time, the pattern of resources important for feeding preferences in herbivores (polyphenols and nitrogen) is mapped across an extensive landscape and the modeled foliar concentrations are shown to fit with ecological knowledge of the area. We explain how estimates of nitrogen (crude protein) and polyphenols may be scaled up from point-based observations to reveal their spatial pattern, and how the variation in forage quality can influence the management of savannas, including farms, communal grazing areas, and conservation areas. It provides a glimpse of the choices herbivores must face in selecting food resources of different qualities.     

Innovative uses of ICT in Chilean schools

Abstract This paper presents some of the results of the study of seven cases of innovative pedagogical practices using ICT. The study was performed in the framework of the application of SITES M2 in Chile. The results are divided in two sections. First is a summary of each case, highlighting its innovative characteristics that serve as models of 'good practice' for Chilean teachers. Second, the results of the analysis of what teachers did are outlined; the impact on students and the type of teaching and learning activities in use. Results show that these projects did not provide evidence of having impact on students' learning as defined in the national curriculum. However, they show that students participating in these projects could learn other things, had the opportunity to develop abilities defined as cross-curricular and practised ICT related skills. The analysis of the teaching and learning activities highlights some deficiencies in the way that teachers implement new teaching strategies.     

动态规划求解中国象棋状态总数

中国象棋空间复杂度是分析中国象棋博弈难度的重要指标，中国象棋空间复杂度分析是一个计数问题，即求解中国象棋状态总数。根据中国象棋棋子的着法特征，该问题可分解为若干子问题，利用动态规划分别解决这些子问题，能够求出中国象棋状态总数的精确解。实验得出中国象棋状态总数约为7.54×10^39.88，过去许多文献描述的中国象棋状态总数是不准确的，远远高估了中国象棋状态总数。基于动态规划的计数方法也可以用于计算其他棋类的空间复杂度，也能够用于寻找空间复杂度较低的残局棋型，为构建中国象棋残局库提供依据。     

磁盘缓存管理机制研究

磁盘缓存是解决I/O性能的一种技术。文章主要讲述缓存管理组成、算法的种类及其管理策略。并对基于频率的替换算法的原理、实现方法做了详细阐述。