多功能引爆装置的研制

重点介绍了多功能爆破装置中的瓦斯检测电路和高压引爆电路，对两个电路的主要元件、参数作了分析计算，还介绍了电路的基本组成及其各自的作用，给出了电路基本组成的方框图和三个主要软件模块流程图。     

一种高可靠性的复位电路

介绍了复位电路的一些基本功能和一些常见的复位电路。提出了单片UP监控芯片MAX706在系统复位电路中的应用方法。介绍了在80kV绝缘油测试仪中应用的高可靠性复位电路。     

基于DSP芯片的多轴运动控制系统的开发

本文主要介绍了基于PCI总线的以多单片机和DSP为控制芯片的多轴运动控制系统的设计,主要包括其硬件方面的设计.详细的介绍了运动控制卡和接口卡的各个模块功能电路,包括DSP与PCI的通信电路,以及DSP的辅助电路包括JTAG测试接口电路、供电电路、时钟电路,存储器扩展电路等.     

步进电机的一种接口电路

介绍一种采用8253接口芯片,由微处理机通过8253接口来控制步进电机工作的接口电路,运行过程中不占用CPU。具体介绍了硬件电路,包括实时脉冲发生电路以及分相和方向控制,还介绍了软件设计。     

一种微量型输液泵的硬件设计

介绍了一种微型输液泵的硬件设计和电路原理，并对电路听一些关键器件作了介绍。     

某型温控系统测试设备的设计与实现

本文提出了一种温控系统测试设备设计方案,硬件电路主要介绍了数据采集与控制系统、恒流源电路和传感器电路的设计和实现,软件部分重点介绍了数字滤波程序的原理和实现效果。     

一种高性能价格比计算机交流信号采集接口

本文介绍了一种高性能价格比的计算机交流信号采集接口电路，该电路取样部分具有很好的线性和快速性，对波形采样和有效值采样都适用。文中重点介绍了有效值采样电路、芯片，并对电路性能进行分析。     

旧智能手机的一种新用途

介绍了一种旧智能手机的新用途,将更新换代的旧智能手机的照相系统和家用门镜相结合,使家用门镜具有监控功能。本文介绍了手机的电压脉冲开屏原理和电路;介绍了线控拍照电路、OTG拍照电路。     

TMS320VC33系统的硬件设计

本文针对浮点DSP芯片TMS320VC33芯片的结构特点,介绍了该芯片最小系统硬件电路设计的方法,并结合实际应用情况,介绍了相关的时钟电路、复位电路、JTAG仿真接口电路、外围存储器接口电路以及Boot的设计。     

电路原理在线性放大电路中的运用

介绍了电路分析中的一些基本原理，以具体的线性放大电路为例，对电路原理在分析放大电路时的方法进行了研究。     

Database management standards: status and applicability

This article presents the current status of existing and emerging ISO, ANSI, and FIPS standards for database management, specifically Database Languages NDL and SQL and Remote Database Access (RDA). It describes the general content of each standard and discusses its applicability, availability, completeness, maturity, stability, existing usage, and known limitations. Where appropriate, it also addresses the availability of conformance test suites and future plans for enhancements and follow-on standardization efforts.     

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.     

Environmental ergonomics: a review of principles, methods and models

A review of the principles, methods and models used in environmental ergonomics is provided in terms of the effects of heat and cold, vibration, noise and light on the health, comfort and performance of people. Environmental ergonomics is an integral part of the discipline of ergonomics and should be viewed and practised from that perspective. Humans do not respond to the environment in a way monotonically related to direct measures of the physical environment. There are human characteristics which determine human sensitivities and responses. Practical methods for assessing responses to individual environmental components are presented as well as responses to ‘total’ environments and current and proposed International Standards concerned with the ergonomics of the physical environment.     

Integration | Innovation | Inclusion: Values,Variables and the Design of Human Environments

Complexity, complication, contradiction, consumption, confusion, delusion, depression. Opportunity, inspiration, ingenuity, compassion, wisdom. Our world is perplexing, our times are fast moving, and our choices are many. To find an appropriate path is a daunting yet vital challenge that confronts us as individuals, as communities, and as a civilization. How sustainable is our world? How reasonable are our behaviors? The present article is a collection of thoughts on a series of intertwined issues related to the contemporary world, its environmental dimensions, and their present-day problems. The goal is to survey the landscape through a lens of Environmental Design, to provide some perspectives, to raise some questions, and to explore systems, beliefs, and values informing and influencing actions. It is important to consider how people's belief systems influence, inform, and shape actions. This holds true in realms political, spiritual, and cultural. It also proves relevant in the ways in which we imagine, design, develop, and construct our buildings, cities, spaces, and places.

Appropriate solutions to some of our most daunting problems will arise through the concerted efforts, open dialogue, and collective wisdom of the wide array of stakeholders, professionals, politicians, decision makers, and citizens (both engaged and disenfranchised) who have the will and wherewithal to make a difference and to make the world safer, healthier, and better. It seems vital for us to critically examine, and question, our belief systems and their connections to the ways we define, refine, and realize progress. Architecture and Environmental Design, in both a philosophical and a practical sense, reflect as well as form greater aspirations, directions, and events of our times.     

基于RGB-D信息的移动机器人SLAM和路径规划方法研究与实现

移动机器人在各种辅助任务中需具备自主定位、建图、路径规划与运动控制的能力。本文利用RGB-D信息和ORB-SLAM算法进行自主定位,结合点云数据和GMapping算法建立环境栅格地图,基于二次规划方法进行平滑可解析的路径规划,并设计非线性控制器,实现了由一个运动底盘、一个RGB-D传感器和一个运算平台组成的自主移动机器人系统。经实验验证,这一系统实现了复杂室内环境下的实时定位与建图、自主移动和障碍物规避。由此,为移动机器人的推广应用提供了一个硬件结构简单、性能良好、易扩展、经济性好、开发维护方便的解决方案。     

Interpretive Tools for 3-D Structural Geological Modelling Part II: Surface Design from Sparse Spatial Data

We present software tools and methods applicable to the geological modelling of sparse spatial and structural data within a 3-D digital environment. Free-form surfaces derived from section-style control frames and constrained by field-based structural measurements are employed as partially automated design aids intended to speed up and streamline the 3-D geological model building process. Some design degrees of freedom such as NURBS tension (or weights), knot sequencing and tying surface features are also discussed with examples drawn from spatial and structural data collected in Baffin Island by the Geological Survey of Canada and near-mine exploration data from Canadian mines. Interpolation of field-based structural measurements along the boundary of an unknown surface is also demonstrated. This work is potentially relevant to regional mappers and others dealing with sparse spatial and structural data, and/or conceptual surface modelling.     

Expert system verification and validation: a survey and tutorial

Assuring the quality of an expert system is critical. A poor quality system may make costly errors resulting in considerable damage to the user or owner of the system, such as financial loss or human suffering. Hence verification and validation, methods and techniques aimed at ensuring quality, are fundamentally important. This paper surveys the issues, methods and techniques for verifying and validating expert systems. Approaches to defining the quality of a system are discussed, drawing upon work in both computing and the model building disciplines, which leads to definitions of verification and validation and the associated concepts of credibility, assessment and evaluation. An approach to verification based upon the detection of anomalies is presented, and related to the concepts of consistency, completeness, correctness and redundancy. Automated tools for expert system verification are reviewed. Considerable attention is then given to the issues in structuring the validation process, particularly the establishment of the criteria by which the system is judged, the need to maintain objectivity, and the concept of reliability. This is followed by a review of validation methods for validating both the components of a system and the system as a whole, and includes examples of some useful statistical methods. Management of the verification and validation process is then considered, and it is seen that the location of methods for verification and validation in the development life-cycle is of prime importance.     

Real-world effectiveness of Ergonomic methods

The way ahead with the practical development and application of Ergonomic methods is through a better anticipation and appreciation of changes to system effectiveness and human work that will be incurred through the introduction of new technologies to the workplace. These improvements will involve an improved awareness by the system of the working context and environment. The argued future is with improvements in the handling and use of knowledge by systems. The development of suitable Ergonomics methods, or the careful adaptation of existing methods, should accompany any technological revolution. Moreover, future methods are needed that are specifically developed to be applicable to the real time study of work considering both work context and the amalgamation of results from the use of many diverse methods throughout the design and development life cycle of a system. Part of this process will be a necessary complementation of both quantitative and qualitative methods and guidelines. Another focus should be on creating improved Ergonomics participation within multidisciplinary system design and development environments throughout the system's life cycle. Only through this avenue can Ergonomics show a consistent and valued contribution to quality design and its development. In parallel to such a contribution will be an acceptance by other engineering disciplines, managers, and customers that such an application of Ergonomics is cost effective.     

Developing Faculty ICT Competencies Inside and Outside the Library

Despite all the financial resources that are directed to support and acquire learning technologies, the results have been generally disappointing. Faculty are eager to use technology but lack the technical skills, ability, and experience. Library staff includes a talent tool rich in Information and Communication Technologies (ICT)/WEB 2.0 technical expertise and experience. In terms of content sourcing and procurement, library technical services and selection staff have broad knowledge of the marketplace for online information and content as well as experience in licensing access. They have a firm grasp of the transaction process, workflows, pricing, and licensing negotiations. Content development and sourcing inevitably involves access management, online storage, copyright, and licensing—things at which libraries are good. ICT deployment is changing teaching and learning on campuses, and the roles of those involved in teaching and learning are also changing. Whether formally through mandated library services, or informally through back channels, library staff are supporting faculty new technology use as well as faculty teaching materials content sourcing and procurement.     

挖掘机北斗高精度自动定位和引导方法

对挖掘机行走机构和工作装置进行高精度定位,能够实现挖掘机自动跟踪和引导,提高作业效率、优化作业效果、降低工作损耗;以北斗高精度接收机和定位天线为主,配合角度传感器和车载计算机,组成一种高精度定位系统,可实现挖掘机自动跟踪和引导;同时,通过对方法运行过程进行流程化概括和讨论,介绍设备总体定位、运动姿态分析、坐标转换等详细算法,并在软件程序中予以实现;系统在某矿山挖掘机进行测试并于传统方法对比,证明了该方法在挖掘机行走机构和工作装置高精度定位中的效力和适用性。