信号采集与数据处理电路的研究

随着原子核科学技术的发展，无论是对原子核内部特征和规律的研究，或者是对原子核科学技术的应用，都需要对核辐射和原子核所携带的信息进行测量和分析研究。在核电子学测量系统中，核辐射探测器输出信号在经过各种信号处理电路后，通常都要变换成数字信号，再经过数据收集和处理，给出实验的最终结果，因此实验工作的任何进展都要求有相应的数据获取和处理系统的支持。根据实验的实际需求，我们以采集、处理探测器输出的信号为题，开展了一些研究工作，我们先后开展的研究工作包括以下儿个方面：1．激光功率计的变换与显示电路的研制2．基于PCI总线、嵌入8051单片机的计数卡的研制3．数据处理分析软件的设计这三部分的设计工作我们将在论文的第二、第三、第四章分别进行阐述。激光功率计的变换与显示电路把由激光功率计输出的模拟电压量变为数字脉冲输出，并且把该输出脉冲的频率实时定性显示出来。本电路测量精度高，线性好，工作稳定。我们研制开发的计数卡是一种很实用的计数卡，它是一种基于PCI总线，嵌入单片机的高速计数器，最大计数范围为109-1，最高的计数频率为20MHz。该计数卡计数范围宽，计数频率高，具有定时计数、重复计数等功能，可以取代常规的定标器，具有广泛的应用前景。数据处理分析软件包括下位机软件、上位机软件及通讯协议三部分，实现数据的采集与记录，并将读取的数据以Excel电子表格的形式存储，以备查询。下位机的软件采用KeilC编写，上位机软件采用Delphi编写。目前激光功率计的变换与显示电路和计数卡及相应的数据处理软件都设计、调试完成，已经投入使用，获得满意结果，受到好评。

effect of staffing pattern on software project: an empirical analysis

Univ SE Calif, Ctr Syst & Software Engn, ABB, Microsoft Res, IEEE, ACMSIGSOFT, N Carolina State Univ Comp Sci

the role of software process simulation modeling in software risk management: a systematic review

Univ SE Calif, Ctr Syst & Software Engn, ABB, Microsoft Res, IEEE, ACMSIGSOFT, N Carolina State Univ Comp Sci

an empirical study on bug assignment automation using chinese bug data

Univ SE Calif, Ctr Syst & Software Engn, ABB, Microsoft Res, IEEE, ACMSIGSOFT, N Carolina State Univ Comp Sci

extending the boundary of spreadsheet programming: lessons learned from chinese governmental projects

ICSE

Highly ordered mesoporous carbons as electrode material for the construction of electrochemical dehydrogenase- and oxidase-based biosensors

In this work, the excel lent catalytic activity of highly ordered mesoporous carbons (OMCs) to the electrooxidation of nicotinamide adenine dinucleotide (NADH) and hydrogen peroxide (H2O2) was described for the construction of electrochemical alcohol dehydrogenase (ADH) and glucose oxidase (GOD)-based biosensors.

桌面视像会议系统在虚拟小组中的应用

介绍了支撑虚拟小组工作的各项技术 (诸如电子邮件、万维网和视像会议系统等 ) ,阐述了如何利用 Microsoft Netmeeting桌面视像会议系统在分散的小组成员之间进行 CAD合作设计。

基于中间件的MES与ERP系统信息集成技术研究

目前ERP系统和MES系统在企业中的应用越来越广泛，如何实现两系统的信息集成﹑消除“信息孤岛”﹑达到资源的有效共享对于企业而言具有重要的意义。 本文首先介绍了ERP系统、MES系统、中间件与信息集成的相关技术背景，为后文的深入研究奠定了基础；然后阐述了ISA SP95标准、XML技术和Microsoft集成中间件产品BizTalk Server的工作原理和开发方法。接下来讨论了MES与 ERP 集成的必要性，并对MES与 ERP 集成的现状进行了分析，比较了现有的几种MES和ERP系统集成的模式。在讨论了国内外对MES和ERP系统信息集成解决方案的缺陷与不足的基础上，以ISA SP95为标准分析抽取并建立了MES和ERP系统信息集成模型，提出了基于消息队列通信中间件技术来集成MES和ERP系统的方法，并结合陕西西安法士特齿轮有限公司的MES项目，在消息队列通信中间件BizTalk Server的基础上设计开发了ERP/MES信息集成系统。 本课题涉及到以下主要技术及工具:XML, Biztalk Server, SQL Server。本文提出的ERP/MES信息集成系统采用基于.NET平台的组件化程序设计方法，结合ISA SP95标准分析抽取并建立了ERP/MES系统信息集成模型， 以XML-XSD标准作为消息定义的规范，Biztalk Server作为消息模板定义、转换及消息传递的集成中间件，SQL Server 2000作为数据库服务器。主要介绍了ERP/MES信息集成系统的体系结构，给出了系统的功能结构框图，介绍了系统各个功能模块说明和安全性设计，并阐述了ERP/MES集成系统中关键技术的具体实现，最后对系统进行了初步测试，实现了ERP向MES下达生产计划、MES接收计划并指导生产、计划完成后向ERP回馈生产绩效信息的闭环全过程。本系统的研究开发，实现了MES系统和ERP系统间异步、实时、可靠的集成，又由于BizTalk Server具有平台无关性特点，本系统可以应用到许多大规模应用系统的集成，具有一定的实用和推广价值。 关键词 ERP；MES；中间件；信息集成

广西合山固体废弃物制备地质聚合物胶凝材料

Geopolymer gelatinous material was prepared by ferroalloy slag (signed with NKT in laboratory) and circulating fluidization bed slag (CFB slag, signed with NM in laboratory) produced from Heshan city, Guangxi zhuang autonomous region, China. The mechanical properties of the geopolymer made of high content ferroalloy slag can reach the standard of 42.5# portland blastfurnace-slag cement, and it’s processing technology is more simple and not need of mill and burn and will not produce harmful gas. By means of chemical and XRD analyses, it is concluded that NKT is a kind of acidity water-granulated slag with better activation and fit to be activated by alkali activators. Low-cost industrial gypsum (signed with NG in laboratory), analytic reagent oxide(signed with NH in laboratory) and sulfate(signed with NS in laboratory) were selected as alkali activation in the experiment. The results showed NH is a good alkali activator for NKT. Both NH and NG can activate ferroally slag’s activities, but NS can’t alone. The activation effect of superimposing activation of NH and NG excel by separateness. Based on those experiments, optimization compounds were carried out: (1) NKT: NH: NG = 80: 10: 10 and (2) NM: NKT: NS: NG: NH = 10: 70: 2: 8: 10。. The soundness of the test blocks is good by boiling examination. Through XRD, SEM, IR, NMR analyses of geopolymer, the reaction mechanism of geopolymer prepared by alkalescent activating in solid wastes was discussed in the thesis first. It is point out, there is difference in reaction mechanism between traditional geopolymer preparation and the preparation of alkalescent activating solid wastes because NG is a industry product. There is the similar process of depolymerization and reunion of Si-O bond. The latter preparation process generate new subtance but the former doesn’t. In the experiment, we found a performance of NKT that the water requirement of normal consistency of geopolymer reduces with increasing content of NKT. The result shows NKT has some ability to reduce water requirement. The performance is worthy of further research and utilization. Making use of solid wastes to prepare geopolymer, not only can settle environment problem caused by a great deal of dump of NKT, but also settle the shortage of natural resources. Moreover it could take economic, environmental and social benefits and settle thoroughly contradiction in the environment protection and regional economy development and promote circulation economy development.

降雨条件下碎石土滑坡稳定性研究

Debris Landslide is one of the types of landslides with the widest distribution, largest quantity, and the closest relationship with engineering construction. It is also one of the most important types of landslides that can cause disaster. This kind of landslide often occurs in the loose slopes which are made up of loose congeries formed by earth filling, residual soil, slope wash, dilapidation, landslide or full weathered material of hard rock. Rainfall is always the chief inducing factor of debris Landslide. Therefore, to research stability of debris Landslide during rainfall not only has important theoretical significance for understanding developing law and deformation and failure mechanism of debris landslide, but also has important practical significance for investigating, appraising, forecasting, preventing and controlling debris landslides. This thesis systematically summarized the relationships between rainfall and landslide, the method to survey water table in the landslides, the deformation and failure mechanism of debris landslide, and the progress in the stability analysis of landslides based on the analyses of data collected widely at home and abroad. The problems in the study of the stability of debris landslide during rainfall was reviewed and discussed. Due to the complicated geological conditions and the random rainfall conditions, the research on the landslides' stability must be based on engineering geological qualitative analysis. Through the collection of the data about the Panxi region and the Three Gorges Reservoir region, the author systematically summarized the engineering geological conditions, hydro-geological condition, distribution characteristics of stress field in the slope, physical and mechanical properties and hydro-mechanical properties of debris. In the viewpoint of dynamics of soil water and hydromechanics, physical process of rainfall to supply groundwater of debris landslides can be divided into two phases, i.e. non-saturated steady infiltrating phase and saturated unsteady supplying phase. The former can be described by mathematical model of surface water infiltration while the latter can be described by equivalent continuous medium model of groundwater seepage. With regard to specific hydrological geology system, we can obtain the dynamic variation law of water content, water table, landslide stability of rock and soil mass, along with quantity and duration of rainfall after the boundary condition on hydrological geology has been ascertained. This is a new way to study the response law of groundwater in the landslides during rainfall. After wet face of rock and soil mass connects with ground water table, the raising of water table will occur due to the supply of rainfall. Then interaction between ground water and rock and soil mass will occur, such as the action of physics, water, chemistry and mechanics, which caused the decrease of shearing strength of sliding zone. According to the action of groundwater on rock and soil mass, a concise mechanical model of debris landslide’s deformation was established during rainfall. The static equilibrium condition of landslide mass system was achieved according to the concise mechanical model, and then the typical deformation and failure process and failure mode of debris landslide during rainfall were discussed. In this thesis, the former limiting equilibrium slice method was modified and improved based on shearing strength theory of , a stability analysis program of debris landslide was established and developed taking account of the saturated-unsaturated seepage, by introducing the shearing strength theory of unsaturated soil mass made by (1978). The program has reasonable data storage and simple interface and is easy to operate, and can be perfectly used to carry out sensitivity analysis of influencing factors of landslides' stability, integrated with the program of Office Excel. The design of drainage engineering are always bases on empirical methods and is short of effective quantitative analysis and appraise, therefore, the conception of critical water table of debris landslide was put forward. For debris landslides with different kinds of slide face in the engineering practice, a program to search the critical water table of debris landslide was developed based on native groundwater table. And groundwater table in the slope should be declined below the critical water table in the drainage works, so the program can be directly used to guide drainage works in the debris landslide. Taking the slope deformation body in the back of former factory building of Muli Shawan hydroelectric power station as an example, a systematic and detailed research on debris landslides' stability during rainfall was researched systematically, the relationship among quantity of rainfall, water table and stability of slope was established, the debris landslides' stability in process of rainfall from dynamic viewpoint was analyzed and researched.

广西西部区域自然与社会协调发展决策研究

自然与社会结合在一起构成了一个复杂的大系统，对这个系统进行研究的目的在于探索其内部诸要素之间协调、统一的途径，最实现人类持续发展的理想。“贫困与环境－摆脱恶性循环”，是当今人类共同关心的主题之一，研究自然与社会的协调发展，正是把这个主题引向深入。广西西部区域是中国重要的贫困地区，也是生态脆弱敏感区。贫困与环境的恶性循环在这里活生生地展示着人类过度消耗环境资源的历史。该区域这种恶劣的自然环境是人类不正确的生产、生活活动和特殊的地质、地理环境共同作用的结果。但可以确信，消除贫困在该区域并不是一个不可及的愿望，只要实施正确的产业政策和环境保护措施，是可以实现环境与经济协调发展的目标的。对环境资源的无限制消耗是因为它没有成为经济发展的直接成本，因此造成了对环境资源的浪费－这是对环境资源价值的扭曲。为此应当征收环境资源使用费或税收，使对环境容量的消耗成为经济建设总成本的一部分。所以，区域经济的增长决定于：物质资本＋人力资本＋环境资本。通过系统分析和系统动力学模型的模拟，对该区域自然与社会的协调发展提出如下对策：①基于系统动力学模型的策略分析：适当的投资、6％的治污投资比例和控制人口。②生态建设与环境治理；③产业开发；④环境移民与劳务输出；⑤教育；⑥国家特殊政策；信息是决策的基础，本文利用Microsoft ACCESS等软件设计了专用的信息数据库，该数据库图文并茂，用户界面良好，并连接了模拟与决策模型，可进行系统动力学的决策模拟。它将是“贫困地区自然与社会协调发展信息决策系统”的雏形。

Controlpec 1.0: controle financeiro simplificado para a fazenda de pecuária de corte.

A maioria dos produtores de gado de corte não realiza adequadamente o controle de receitas e despesas de sua atividade. Como a lucratividade da pecuária de corte tem se reduzido pela queda no preço de seus produtos e pela alta nos custos de produção, tal função tornou-se crucial para aqueles que querem se manter no negócio. Para atender essa demanda, a Embrapa Gado de Corte desenvolveu, em ambiente Excel, o Controlpec 1.0, uma ferramenta simples e de fácil utilização pelos produtores. Com base no movimento financeiro da fazenda são gerados relatórios que consolidam despesas, receitas e margens econômicas da atividade, tendo em conta o plano de contas definido pelo usuário. Os resultados são expostos para cada mês do ano e para todo o ano.

Como obter dados e gerar curvas de lactação de vacas de corte ? modelo CLV Corte.

Existem poucos dados de produção de leite de vacas de corte na literatura, provavelmente, em função da dificuldade em se medir essa variável. O presente documento visa a incentivar a obtenção desse dado fundamental para entender a eficiência da fase de cria, segmento do ciclo completo em que há o maior dispêndio de energia na produção de carne. Para isso, na primeira parte, é descrita, em detalhes, uma metodologia para se obterem dados de produção de leite de vacas de corte com o uso de ordenhadeira mecânica. Informações sobre o número de pontos avaliados, uso de ocitocina, importância de dados de composição do leite e todos os aspectos relevantes para uma boa mensuração da produção de leite são abordados. Um modelo para a determinação das curvas de lactação e de seus parâmetros, programado em Excel e que é parte integrante deste documento (CLV Corte.xls), é descrito e informações para seu uso são fornecidas. O usuário deste documento, portanto, tem condições de fazer mensurações adequadas da produção de leite de vacas de corte e obter as estimativas de produção e da curva de lactação de forma automática, pelo modelo fornecido.

Avaliação técnica e financeira da atividade de produção de leite em uma fazenda familiar.

Este trabalho apresenta uma avaliação tecnica e financeira da atividade de producao de leite em uma fazenda do Municipio de Gameleira-GO, regiao sul de Estado de Goias que incorpora, tambem, atividades de producao de graos, de cereais e de tomate industrial irrigado. O trabalho visa tambem a demostrar a importância de um estudo de caso, para avaliacao de novas tecnologias. Com o software Microsoft Acces, desenvoveu-se um sistema de informacoes gerencias, no ambito de uma fazenda. Apresentaram-se os resultados de desmpenho da atividade de producao de leite, bem como propuseram-se melhorias no processo de producao de leite que incluiram: novas opcoes de producao de volumoso e compra de concentrado a granel a menor custo, passiveis de serem adotadas pelo proprietario e sua familia.

An integrated firewall policy validation tool.

Security policies are increasingly being implemented by organisations. Policies are mapped to device configurations to enforce the policies. This is typically performed manually by network administrators. The development and management of these enforcement policies is a difficult and error prone task. This thesis describes the development and evaluation of an off-line firewall policy parser and validation tool. This provides the system administrator with a textual interface and the vendor specific low level languages they trust and are familiar with, but the support of an off-line compiler tool. The tool was created using the Microsoft C#.NET language, and the Microsoft Visual Studio Integrated Development Environment (IDE). This provided an object environment to create a flexible and extensible system, as well as simple Web and Windows prototyping facilities to create GUI front-end applications for testing and evaluation. A CLI was provided with the tool, for more experienced users, but it was also designed to be easily integrated into GUI based applications for non-expert users. The evaluation of the system was performed from a custom built GUI application, which can create test firewall rule sets containing synthetic rules, to supply a variety of experimental conditions, as well as record various performance metrics. The validation tool was created, based around a pragmatic outlook, with regard to the needs of the network administrator. The modularity of the design was important, due to the fast changing nature of the network device languages being processed. An object oriented approach was taken, for maximum changeability and extensibility, and a flexible tool was developed, due to the possible needs of different types users. System administrators desire, low level, CLI-based tools that they can trust, and use easily from scripting languages. Inexperienced users may prefer a more abstract, high level, GUI or Wizard that has an easier to learn process. Built around these ideas, the tool was implemented, and proved to be a usable, and complimentary addition to the many network policy-based systems currently available. The tool has a flexible design and contains comprehensive functionality. As opposed to some of the other tools which perform across multiple vendor languages, but do not implement a deep range of options for any of the languages. It compliments existing systems, such as policy compliance tools, and abstract policy analysis systems. Its validation algorithms were evaluated for both completeness, and performance. The tool was found to correctly process large firewall policies in just a few seconds. A framework for a policy-based management system, with which the tool would integrate, is also proposed. This is based around a vendor independent XML-based repository of device configurations, which could be used to bring together existing policy management and analysis systems.