ERP软件包—设计与实现

随着经济的全球化,企业面临着各种各样更激烈的竞争。企业要在激烈竞争和不断变化的市场求得生存,必须采取现代化的经营管理手段,提高自身的竞争力。其中ERP是面向企业的高效率生产经营管理软件包。本文在一个通用ERP软件包开发的基础上,总结了整个开发过程及开发经验,以期对中国的民族软件的发展及中国企业ERP的顺利实施有所裨益。     

Finding the Right Software Package

Most computer applications and program routines required in business have already been written. Thus, each new development project contains some level of redundancy. This redundancy offers MIS managers an opportunity to save time and money and to reduce the risk of building new systems. Unfortunately, this opportunity brings with it the cost and risk of searching for, evaluating, and modifying existing software.     

Finding the Right Software Package

Most computer applications and program routines required in business have already been written. Thus, each new development project contains some level of redundancy. This redundancy offers MIS managers an opportunity to save time and money and to reduce the risk of building new systems. Unfortunately, this opportunity brings with it the cost and risk of searching for, evaluating, and modifying existing software.     

How to Manage the Implementation of a Security Software Package

Abstract

The introduction of a security software package affects users more than any other operating system enhancement. A carefully planned implementation greatly reduces the burden imposed on system users and enhances the credibility of the rest of the security program.     

How to Manage the Implementation of a Security Software Package

The introduction of a security software package affects users more than any other operating system enhancement. A carefully planned implementation greatly reduces the burden imposed on system users and enhances the credibility of the rest of the security program.     

轨迹发生器设计与仿真

轨迹发生器在惯性导航技术研究过程中是非常重要的,本文介绍了轨迹发生器软件包设计的整体思路,详细推导了轨迹方程,描述了外部信息控制下的位置、速度、姿态、比力以及载体绝对角速度的变化规律,分析了载机在直线飞行、滚转摇摆、转弯机动、正弦机动四种飞行轨迹的控制规律,完成了相应的控制方程的设计,最后对载机在对称轴滚转摇摆飞行状态时轨迹发生器进行了仿真.仿真结果表明该轨迹发生器的设计是正确的,符合载机飞行的各种实际状态.     

用C#实现C/S模式下软件自动在线升级

针对目前C/S模式下编写的应用程序可维护性差、升级困难的特点,采用C#语言编程提出了一套自动在线升级的解决方案,从而带来维护和使用的方便。分析了在线升级的困难及实现原理,提出了一套可重复利用的实现在线升级的系统,具有实际参考价值和现实意义。     

Browndye: A Software Package for Brownian Dynamics

A new software package, Browndye, is presented for simulating the diffusional encounter of two large biological molecules. It can be used to estimate second-order rate constants and encounter probabilities, and to explore reaction trajectories. Browndye builds upon previous knowledge and algorithms from software packages such as UHBD, SDA, and Macrodox, while implementing algorithms that scale to larger systems.

Program summary

Program title: BrowndyeCatalogue identifier: AEGT_v1_0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEGT_v1_0.htmlProgram obtainable from: CPC Program Library, Queen's University, Belfast, N. IrelandLicensing provisions: MIT license, included in distributionNo. of lines in distributed program, including test data, etc.: 143 618No. of bytes in distributed program, including test data, etc.: 1 067 861Distribution format: tar.gzProgramming language: C++, OCaml (http://caml.inria.fr/)Computer: PC, Workstation, ClusterOperating system: LinuxHas the code been vectorised or parallelized?: Yes. Runs on multiple processors with shared memory using pthreadsRAM: Depends linearly on size of physical systemClassification: 3External routines: uses the output of APBS [1] (http://www.poissonboltzmann.org/apbs/) as input. APBS must be obtained and installed separately. Expat 2.0.1, CLAPACK, ocaml-expat, Mersenne Twister. These are included in the Browndye distribution.Nature of problem: Exploration and determination of rate constants of bimolecular interactions involving large biological molecules.Solution method: Brownian dynamics with electrostatic, excluded volume, van der Waals, and desolvation forces.Running time: Depends linearly on size of physical system and quadratically on precision of results. The included example executes in a few minutes.References:

[1]

N. Baker, D. Sept, S. Joseph, M. Holst, J. McCammon, Electrostatics of nanosystems: Application to microtubules and the ribosome, Proc. Natl. Acad. Sci. USA 98 (18) (2001) 10037-10041.

     

汉语盲人电脑软件的开发和研究

本文介绍了盲文的历史沿革及福音盲文软件概况，并提出一种适合中国盲人操作的文字处理，有声浏览器、有声电子邮件和有声数据库系统的开发与实现方法，对邮件处理与管理、盲用有声数据库的系统模块作了介绍。     

可回滚的软件升级技术研究

软件升级是软件应该具备的基本功能之一。根据目前软件升级实现的方法和存在的问题,尤其是软件升级后的可用性和安全性问题,提出了一种更加合理的具有回滚功能的软件升级技术。利用这种技术可以避免这些问题,并给出了利用COM技术实现的示例。     

Beyond Brute Force: Testing Financial Software

Large software development projects that follow formal processes generally divide the work among separate roles on structured teams that tend to employ development staff whose technical expertise is domain-neutral. This is especially true of large outsourcing vendors. Yet, the end users' needs are expressed in the applied domain's specific concepts, terms, and logic. Testing financial software's functionality requires deep subject expertise and an understanding of quality assurance methods and processes. Thorough domain analysis, efficient test designs, specific methods, and well-prepared quality assurance staff are key elements for success.     

COMPCHEM: Progress Towards GEMS a Grid Empowered Molecular Simulator and Beyond

Foundations and structure of the building blocks of GEMS, the ab initio molecular simulator designed for implementation on the EGEE computing Grid, are analyzed. The impact of the computational characteristics of the codes composing its blocks (the calculation of the ab initio potential energy values, the integration of the dynamics equations of the nuclear motion, and the statistical averaging of microscopic information to evaluate the relevant observable properties) on their Grid implementation when using rigorous ab initio quantum methods are discussed. The requests prompted by this approach for new computational developments are also examined by considering the present implementation of the simulator that is specialized in atom diatom reactive exchange processes.     

Towards a Programming Language for Interaction Nets

Interaction nets were introduced almost 15 years ago. Since then they have been put forward as both a graphical programming paradigm and as an intermediate language into which we can compile other languages. Whichever way we use interaction nets, a problem remains in that the language is very primitive. Drawing an analogy with functional programming, we have the λ-calculus but we are missing the functional programming language: syntactic sugar, language constructs, data-structures, etc. The purpose of this paper is to make a first step towards defining such a programming language for interaction nets.     

Problem Oriented Software Engineering: Solving the Package Router Control Problem

Problem orientation is gaining interest as a way of approaching the development of software intensive systems, and yet, a significant example that explores its use is missing from the literature. In this paper, we present the basic elements of Problem Oriented Software Engineering (POSE), which aims at bringing both nonformal and formal aspects of software development together in a single framework. We provide an example of a detailed and systematic POSE development of a software problem: that of designing the controller for a package router. The problem is drawn from the literature, but the analysis presented here is new. The aim of the example is twofold: to illustrate the main aspects of POSE and how it supports software engineering design and to demonstrate how a nontrivial problem can be dealt with by the approach.     

Beyond the urban-rural dichotomy: Towards a more nuanced analysis of changes in built-up land

Urban land and rural land are typically represented as homogenous and mutually exclusive classes in land change analyses. As a result, differences in urban land use intensity, as well as mosaic landscapes combining urban and rural land uses are not represented. In this study we explore the distribution of urban land and urban land use intensity in Europe and the changes therein. Specifically, we analyze the distribution of built-up land within pixels of 1 km². At that resolution we find that most built-up land is distributed over predominantly non-built-up pixels. Consistently, we find that most urban land use changes between 2000 and 2014 come in small incremental changes, rather than sudden large-scale conversions from rural to urban land. Using urban population densities, we find that urban land use intensity varies strongly across 1 km² pixels in Europe, as illustrated by a coefficient of variation of 85%. We found a similarly high variation between urban population densities for most individual countries and within areas with the same share of built-up land. Population changes have led to different combinations of urban land expansion and urban intensity changes in different study periods (1975–1990, 1990–2000, and 2000–2015) and countries. These findings suggest that land use change models could be improved by more nuanced representations of urban land, including mosaic classes and different urban land use intensities.     

ComPaSS: A Communication Package for Scalable Software Design

In massively parallel computers (MPCs), efficient communication among processors is critical to performance. This paper describes the initial implementation of the ComPaSS communication library to support scalable software development in MPCs. ComPaSS provides high-level global communication operations for both data manipulation and process control, many of which are based upon a small set of low-level communication primitives. The low-level operations of the ComPaSS library are provably optimal for a class of architectures representative of many commercial scalable systems, in particular those using wormhole routing and n-dimensional mesh network topologies. This paper concentrates on the multicast and multireceive components of the ComPaSS library, which are fundamental to implementing efficient high-level data parallel operations. The design of the multicast and multireceive primitives is described and an example of a data parallel application utilizing ComPaSS multicast is given. The scalability of these primitives is discussed, and improvements in performance resulting from use of the library on a 64-node nCUBE-2 are presented.     

Towards a Software Change Classification System: A Rough Set Approach

The basic contribution of this paper is the presentation of two methods that can be used to design a practical software change classification system based on data mining methods from rough set theory. These methods incorporate recent advances in rough set theory related to coping with the uncertainty in making change decisions either during software development or during post-deployment of a software system. Two well-known software engineering data sets have been used as means of benchmarking the proposed classification methods, and also to facilitate comparison with other published studies on the same data sets. Two technologies in computation intelligence (CI) are used in the design of the software change classification systems described in this paper, namely, rough sets (a granular computing technology) and genetic algorithms. Using 10-fold cross validated paired t-test, this paper also compares the rough set classification learning method with the Waikato Environment for Knowledge Analysis (WEKA) classification learning method. The contribution of this paper is the presentation of two models for software change classification based on two CI technologies.     

FADOCTOR下神港智能仪表通讯程序开发

本文详细介绍了在FADOCTOR下日本神港智能仪表通讯程序的开发过程，按FADOCTOR的数据接口结构，设计了描述文件；按仪表通讯协议，开发了动态链接库，在FADOCTOR的I／O模块和监控模块下，进行组态，运行，结果表明，通讯完全正确。     

一种软件过程建模语言SPML的设计

本文提出了一个具有丰富语义、灵活的、可扩展的、形式化的软件过程建模语言SPML。它提供了两个不同抽象层次的描述语言以满足不同用户的需求。高抽象层次的语言SPML／H能够较全面地描述软件过程,具有良好的易用性;低抽象层次的语言SPML／L可以描述规则等,适合描述软件过程的细节。SPML／H还能够被逐步地变换成SPML／L,保证了软件过程模型可以在一个共同的形式化基础上被分析和运作。最后通过一个实例说明过程建模语言的有效性。