WODA - a modeling support system for BOD-DO assessment in rivers

This paper describes a modeling support system (WODA) which allows the computation of BOD and DO concentrations in a river stretch under different hydrological and thermal conditions. The support is based on a model in which the reaction rates depend upon flow rate and temperature. Peculiar characteristics of WODA are the possibility to estimate the model parameters on the basis of a few sets of data and the availability of an interactive simulation routine. A built in data base for storing and managing water quality data is currently being developed.     

Case-based teaching using the Laboratory Animal System for learning C/C++ programming

Teachers and students often consider learning programming a difficult pursuit. Face-to-face learning alone cannot provide effective teaching or efficient solutions for learning. A case teaching model can make students active in programming courses, even as it relies on solid learning theory and pedagogical strategies. This paper reports a study based on a case teaching model in C/C++ programming. The Laboratory Animal System (LAS) is a standalone case for management of laboratory animals. This paper includes an overview of LAS architectural design and user interface by C/C++ and presents the design, implementation, and evaluation of the model, as well as its implications for learning computer programming. The case method provides an interactive learning environment for students. Based on a survey of student feedback, students can learn C/C++ programming and gain knowledge more quickly and effectively using the case teaching model than through some traditional methods of teaching.     

An interdisciplinary modelling framework for selecting adaptation measures at the river basin scale in a global change scenario

Shaping global change adaptation strategy in water resource systems requires an interdisciplinary approach to deal with the multiple dimensions of the problem. The modelling framework presented integrates climate, economic, agronomic and hydrological scenarios to design a programme of adaptation measures at the river basin scale. Future demand scenarios, combined with a down-scaled climate scenario, provide the basis to estimate the demand and water resources in 2030. A least-cost river basin optimisation model is then applied to select adaptation measures ensuring that environmental and supply management goals are achieved. In the Orb river basin (France), the least-cost portfolio selected suggests mixing demand and supply side measures to adapt to global change. Trade-offs among the cost of the programme of measures, the deficit in agricultural water supply and the level of environmental flows are investigated. The challenges to implement such interdisciplinary approaches in the definition of adaptation strategies are finally discussed.     

基于Adams用户子程序的交互式仿真过程控制

研究使用Adams用户子程序进行二次开发的方法实现对交互式仿真过程的控制.在每一步的仿真结束后与主系统进行数据的交互,将Adams仿真的控制权交给主系统,实现Adams与主系统的交互式仿真.最后,通过与传统仿真方法得到的数据结果的对比分析,验证应用Adams用户子程序实现对交互式仿真的控制方法的正确性、可行性.     

一个装配机器人离线编程系统的设计与实现

机器人离线编程系统是机器人应用开发的有效工具。本文给出一个智能装配机器人离线编程系统ＡＲＰＳ。该系统提供了一个良好的机器人程序开发和调试环境。用户可采用交互方式建立机器人及环境模型，用操作手级的机器人语言ＡＲＬ描述机器人作业，通过图形仿真调控机器人程序，目标程序与数据通过串行口下装到机器人控制器。     

综述MATLAB与VC++的交互编程

在通信等工程领域的计算机仿真中,VC和Matlah的交互编程可以结合两者的优点,提高仿真效率。文中介绍了Matlah与VC 之间交互编程的几种方法,包括调用Matlab引擎、C语言mex程序、mat文件操作程序等方法,并特别介绍了Matlab Visual Studio Add-in的使用。同时分析了各种方法的优缺点和适用场合,提出了适合于算法仿真的交互编程方法。     

Software Systems for Computer Graphics

This paper describes some software packages and programming systems for computer graphics applications, in the process considering software features for both passive and interactive graphics. It examines the structure both of subroutine libraries for use with some base language and of complete programming languages, and outlines the advantages and disadvantages of each, along with facilities that should be present in any software package.     

A simulation model to study the impact of resource changes on motor vehicle division field offices

This paper presents a network-based simulation model for the microcomputer to solve the resource balancing problem. The specific application discussed is systems planning for Motor Vehicles operations; however, the approach is adaptable to many organizations. The developed software is an interactive concept program, and can be used by people with no experience in computer programming.     

The Variety of Variables in Automated Real-Time Refinement

The refinement calculus is a well-established theory for deriving program code from specifications. Recent research has extended the theory to handle timing requirements, as well as functional ones, and we have developed an interactive programming tool based on these extensions. Through a number of case studies completed using the tool, this paper explains how the tool helps the programmer by supporting the many forms of variables needed in the theory. These include simple state variables as in the untimed calculus, trace variables that model the evolution of properties over time, auxiliary variables that exist only to support formal reasoning, subroutine parameters, and variables shared between parallel processes.     

PKRD: a pharmacokinetic program for least-squares and bayesian analysis of repeated-dose pharmacokinetic curves.

A microcomputer program is presented which analyses multiple-dose pharmacokinetic curves using either a least-squares nonlinear analysis or a bayesian fit. The least-squares subroutine is designed to fit retrospective pharmacokinetic curves and can generate the so-called population pharmacokinetic parameters using the Standard Two-Stage method. The bayesian subroutine can instead be used prospectively to individualise the dosage regimen of a patient based on the concentrations measured in the initial phases of the drug treatment. All the pharmacokinetic subroutines of the program use the one-compartment model with either constant-rate intravenous infusion or oral route with zero-order absorption. The program was tested in a series of ten bone marrow transplantation patients treated with cyclosporine. The least-squares estimates of the one-compartment parameters, calculated by the program, were compared with those generated by the SIMKIN program.     

An introductory computer graphics laboratory

Methods are described for teaching students how to write computer programs to perform basic graphics operations. The elementary operations of scaling, translation, reflection, shear, rotation and clipping are presented. Graphics 1000, a Hewlett-Packard graphics software product is the software used. This product imbeds subroutine calls in a FORTRAN program to execute the graphics functions. The laboratory sessions are divided into modules. Module I uses interactive programs to demonstrate graphics operations. Module II introduces Graphics 1000 commands. Module III uses interactive programs to demonstrate XY plotting with as many as four graphs per plot. Module IV uses interactive programs to demonstrate rotation of objects with hidden line removal. Students are assigned tasks ranging from drawing a section of an I beam through rotation of a three-dimensional object. Computer programs used for the demonstrations are available for the students to examine in order to learn how they work.     

BIOSIM: Simulation of the dynamics of mixed culture biofilm systems

Occurrence and effects of biofilms are outlined. The interactive program BIOSIM for simulation of mixed culture biofilms is introduced as a research tool for scientists and engineers. The mathematical model assumptions and the model equations implemented in the program are presented. The program offers high flexibility in terms of the user interface, the system definition, the simulation and the graphical display of the results. The programming concepts applied are summarized.     

Microsoft Agent在VB中的应用

Microsoft Agent提供了多种生动的交互动画角色，我们可对其编程进行二次开发，本文简要介绍了在VB中如何使用Microsoft Agent.     

Automatic assessment of elementary Standard ML programs using Ceilidh

Ceilidh is an interactive environment which supports computer programming course organisation, practical work and assessment. This paper describes its use to support a first level programming course for the functional language Standard ML . Automated program assessment systems are surveyed and the general Ceilidh approach to automatic assessment is discussed. Extensions to Ceilidh to assess Standard ML programs are considered and an evaluation is made of the effects of its use on student learning. The main conclusion is that Ceilidh use significantly reduces the burden of marking on the lecturer, while not affecting the overall level of achievement of the students.     

Computer simulation of production systems for woven fabric manufacture

This paper reports a research and development of a suite of generic software program entitled TEXSIM (TEXtile SIMulator). The software is mainly intended to create simulation models of weaving of production systems without any programming and automatically performs the simulation study and produces results to understand the stochastic behaviour of the system as well as to analyze the system performances to solve the real life weaving production management problems. The ’TEXSIM’ reads the input parameters from the user in an on-line session through its user-interface, written in FORTRAN’77, and interactively uses WITNESS, a manufacturing simulation package containing the basic simulation model building blocks, and creates the simulation model in accordance with the user’s specifications and conducts the simulation experiments and produces results. The objective is to focus on the practicality and simplicity of simulation model building of a weaving production system with a readily available suite of user-friendly program TEXSIM within few minutes without expertise and back ground of simulation technique and the knowledge of computer simulation programming as well as the skill of handling of commercial simulation package. It also highlights the importance of use of computer simulation technique as a modern, powerful and flexible management analysis tool in weaving factories. Textile engineers and technologists, particularly the managers who have no background of simulation can take full advantages of the use of simulation technique to analyze their present complex weaving production systems, rather than using the conventional analytical rule of thumb methods, to help the management to plan, design and operate their systems in an efficient manner to improve the manufacturing productivity. TEXSIM also facilitates the scheduling of production within the factory through simulation.     

Reliable interactive programming with modules

Interactive programming is a convenient programming style that supports fast prototyping and debugging but often results in a loss of modularity and security. This article addresses the problem of supporting reliable and modular interactive programming. A module system designed for interactive use is introduced. This module system supports separate compilation and automatic updating of module interfaces during program development. It also allows the programmer to obtain a fresh program state for reliable testing, eliminating the need to reload an entire program.A preliminary version of this article was presented at the 1992 ACM Conference on Lisp and Functional Programming.     

Parking lot design by interactive computer graphics

An Interactive Computer Graphics Parking (ICG-PARK) Program which provides an efficient way to design parking lots is described. Using ICG-PARK program, composite pictures of the system can be generated by computer graphics quickly and accurately. The modification or redesign of such pictures can be done easily through interactive display systems.

The area under study is initially drawn with fixed objects. The user can then proceed to any desired subroutine by using the interactive capabilities of the system. The length, direction of row(s) of parking spaces and the dimension of the parking stalls are given by the user each time through the interactive device when a parking stall drawing subroutine is called. Row(s) of parking stalls are drawn on a subpicture. When attached to the cross cursor, it can be moved to the desired location. The approximation of a curve can be drawn by calling the curve drawing subroutine recurrently. The design vehicle minimum turning path curve is provided, and can be used to check the adequacy of the aisle, entrance, and exit layout. The CRT screen can be erased either entirely or partially and redrawn at any time. Finally, a hardcopy of a satisfactory parking lot layout plan can be obtained through the plotter.     

The impact of animation interactivity on novices’ learning of introductory statistics

This study examined the impact of animation interactivity on novices’ learning of introductory statistics. The interactive animation program used in this study was created with Adobe Flash following Mayer’s multimedia design principles as well as Kristof and Satran’s interactivity theory. This study was guided by three main questions: 1) Is there any difference in achievement improvement among students who use different interactive levels of an animation program? 2) Is there any difference in confidence improvement among students who use different interactive levels of an animation program? 3) Is there any difference in program perception among students who use different interactive levels of an animation program?     

基于COM组件技术软件编程研究

COM,既组件对象模型,是一种以组件为发布单元的对象模型,这种模型使各软件组件可以用一种统一的方式进行交互。COM既提供了组件之间进行交互的规范,也提供了实现交互的环境,因为组件对象之间交互的规范不依赖与任务特定的语言,所以COM也可以是不同语言协作开发的一种标准。