无刷新Web客户端组件的研究与实现

为了将显示部分回归客户端,减少传统的Web应用程序开发中与服务器端的通讯,充分利用网络两端的资源,结合C/S和B/S两种模式的优势,借鉴组件开发思想,提出利用客户端JavaScript与DOM技术生成无刷新可复用客户端组件.为开发人员提供了功能全面、简单易用的客户端组件,缩短了开发周期.     

基于PHREEQC模拟分析Na2S2O4对退役铀矿山采区地下水生态的修复

酸法原位地浸采铀作为回收铀资源首选工艺,不可避免会存在部分铀进入地下水污染生态环境,而采用还原剂Na2S2O4将游离的铀还原固定可高效解决此类问题。为此,针对某酸法地浸采铀退役铀矿山地下水铀污染,采用PHREEQC模拟分析Na2S2O4还原固定地下水中可溶性铀的机制,讨论NaHCO3在Na2S2O4还原固定可溶性铀的影响。模拟结果表明：1）该区域地下水中铀以U(Ⅵ)为主,其中UO2SO4、UO22+和UO2(SO4)22-为优势物种,分别占63.60%、32.35%和3.89%;2）Na2S2O4还原固定可溶性铀时,会降低地下水Eh值和Fe(Ⅲ)浓度,增强地下水还原性,促进沥青铀矿和黄铁矿沉淀,但会造成地下水酸化和高SO32-浓度;3）NaHCO3+Na2S2O4在还原固定可溶性铀时,减轻了地下水酸化,增强了对U(Ⅵ)和SO32-的去除,对Na2S2O4还原固定可溶性铀的影响较小,在Na2S2O4和NaHCO3浓度比为1︰1至1︰1.5时修复效果最佳。     

甘肃某金矿选矿试验研究

根据国内某金矿载体矿物的性质,进行了详细的选矿条件试验,获得了较优的工艺参数,最终确定了“一粗两精两扫,中矿顺序返还”的工艺流程。闭路试验结果表明：在磨矿细度为一0．074mm占70％的条件下,可获得产率2．89％、品位85．16g／t、回收率82．17％的金精矿。     

并行设备总线嵌入式控制系统设计

采用ARM7内核芯片S3C4510的高性能网络控制器结合使用CPLD设计VME总线控制器逻辑时序,研制出了类似3UVME的并行设备总线控制器。开发嵌入式系统uClinux的网络通讯软件,实现提供设备之间高速网络连接通道,把后台计算机数据库和前端设备紧密地连接起来,实现数据的快速获取与给定。     

2012年美国自动扣留我出口食品情况分析

本文介绍了2012年美国"自动扣留"我国出口食品的情况,旨在帮助我国政府相关部门和企业全面、深入了解美国"自动扣留"制度,以采取针对性措施,推动我国食品输美更加便利、顺畅,扩大对美食品贸易。     

基于“双芯”51内核的学习机设计

嵌入式系统在教育领域的应用产生了各种类型的学习机,重点论述了一种基于M CS-51内核的“双芯”的嵌入式学习机系统,满足了职业学校学生录入练习的需求。通过对这个系统的分析和论述提出一种在51内核上运行复杂系统的方法。     

A changing society and problems of method: a politically committed research type

This essay examines a politically engaged research genre, which follows the biography of the author who founded two journals: one on mathematical models published in English (Quality and Quantity) and one on politically committed social and economic research published in Italian (Inchiesta). The research considered focuses on Italy in the 1950s, the research by Lazarsfeld in Vienna in the 1920s and in the United States in the 1950s and 1960s, and post-1968 politically committed research in Italy. The analysis of such politically committed types of research (all very different from one another in terms of the interpretative model of reality, the methods used and the relations with the tendering party and the people observed) allows one to understand how this kind of research can be performed with very different methods—all of which do, however, seek to modify reality on the grounds of the research results. The metaphor of the crystal and the flame presented by Italo Calvino in order to classify facts and ideas and styles and feelings can also be used to visualise the polarity (and the difficulty/impossibility of contact) that has always been present in sociology between two different tendencies: towards a discipline that offers the most abstract and objective interpretative model of reality possible with the use of mathematical models (the crystal), and, instead, towards a discipline in which an interpretative model of reality is central, one that produces a social change and in which the qualitative and quantitative methods utilised are at the service of this change (the flame). This polarity thus allows us to separate first and foremost all the politically committed research performed by others for different purposes (market research, research to verify some theoretical hypotheses, etc.) but the same polarity also lies within the politically committed research. We can, indeed, identify a type of politically committed research in an area that has, at one extreme, research tending towards the utmost objectivity and scientific quality of the results and where the co-ordinators try to have all the information on the subjects maintaining the greatest possible distance (the subjects must not know they are being observed); at the other extreme, there is a type of research in which the coordinator completely involves the subjects in the gathering of information that will serve to realise a piece of research whose political aims are explicitly shared. For the identification of a sufficiently articulated typology it has been important to consider five dimensions of politically committed research: (a) the characteristics of the research coordinator (his/her belonging to the type and the academic/non-academic professional status) and his/her interpretative model of reality (b) some general characteristics of the research (the tender and funding, the topic choice, the aims, the contributions to the sociological theory, the duration); (c) the research coordinators relations with the political actors (the intensity of the relations, the political use of the research); (d) the relations of the research co-ordinator with the research subjects; (e) the methodological choices (the basic strategies, the methods used, the use of mathematical procedures). The research that exemplifies this typology is all politically committed to the left and was realised in different times and contexts. I start by considering a kind of politically engaged research (co-research) that appeared in Italy in the 1950s; I then analyse two types of politically engaged research realised in Austria at the end of the 1920s and one in the United States in the 1950s; there then follow two kinds of research realised in the 1960s and 1970s in the United States and a further two kinds realised in Italy in the 1970s and early 1980s. In order to have other kinds of research please refer to the two Journals of which I am the editor: one is an English language journal of mathematical models (Quality and Quantity, International Journal of Methodology, founded in 1966 and published today by Kluwer of Amsterdam), and a politically engaged review (Inchiesta, founded in 1971 and still published today by Dedalo of Bari).     

一种基于C/S模式的TCP通信程序在Vxworks中设计与实现

结合嵌入式实时操作系统VxWorks实现某测控系统的实际应用,以其中的TCP通信为例,讨论了在VxWorks下实现C/S通信的关键技术。     

HGTMS 板卡上电时序控制及电压监控的实现

HGTMS 板卡需要用到多个复杂芯片,而每个芯片都有具体的上电时序。本文根据各上电时序要求,使用 EPLD POWR1220AT8 控制各电源上电时序和电压值监控,从而保障板卡可以正常启动。本设计具有普遍性,在各种板卡设 计中都可以使用。     

运用Winsock构建基于C/S模式的网络通信

本文介绍在Internet平台下Winsock网络编程接口的原理,分析了运用Winsock实现C/S模式通信的过程,建立了面向连接的Winsock网络通信框架,对C/S模式中的服务器转发功能进行了探讨,最后用Winsock实现了多个客户之间会晤的一个聊天程序,并对关键性代码进行了研究。