承包商成本控制风险因素探讨与对策

成本控制是项目管理的重要内容,更是承包商项目管理的基础工作。在调查的基础上,确定了影响承包商成本的主要风险因素：业主资金未及时到位、投资回收期长、业主提出的设计变更等。对这些风险因素进行了分析,指出问题的关键所在并给出相应的对策和措施。指导承包商可以根据实际情况采取积极有效的应对措施,提高自身的抗风险能力和市场竞争力,最大限度地实现项目的经济效益。     

工程地质勘察在房建工程中的运用

近年,随着我国城镇化建设工作不断深入开展,带动了建筑行业的快速发展,将工程地质勘察技术运用在房建工程建设过程中将会对整个建筑行业产生不容小觑的影响,这将从根本上提升我国房建工程的建设品质,减弱负面作用。提升房建工程的地质勘查工作能够为房建工程提供一定的保障,帮助整个行业得到快速有效的发展。文章以工程地质勘察的现实状况为入手点,对其影响房建工程的机制进行了研究与分析。     

岛津TOC-4100型总有机碳测量仪及其在水质监测中的应用

针对TOC的“燃烧氧化—红外线分析”测定方法，重点介绍了日本岛津公司生产的TOC—4100型总有机碳测量仪的工作原理、性能特点及其在水质监测中的应用。     

高密度电阻率法在水文地质勘察中的应用

电阻率法是电法找水应用中历史较长、理论研究较为完善、应用最为广泛的一种方法。通过对高密度电阻率法的基本原理和不同装置类型的介绍及其在马山变电所新建工程场地水文勘察中的应用,为合理布置最佳水井井位提供水文物探依据。     

Students Weigh In: Usability Test of Online Library Tutorials

Librarians can improve their online tutorials by borrowing usability testing techniques from the computer science field to improve the human-computer interface. This study involved a multimethod usability test of librarian-created tutorials to determine what students learned, how they felt on several affective questions, and what they suggested for improving the tutorials. Results of pre- and post-tests showed that student knowledge increased, and surveys and focus group findings lean to several suggestions for improving engagement and placing tutorials where they will be most effective. This case study demonstrates the value of user input to improve the effectiveness of online instruction for information literacy.     

岩土工程勘察的重点分析

近年来,岩土工程勘察技术发展得非常快,研究领域不断拓展,取得了较多的成就。但是,在发展过程中也存在一些不足。重点分析了岩土工程勘察工作,并结合实际工作提出一些个人意见,以期能为相关工作提供帮助。     

Query verification schemes for cloud-hosted databases: a brief survey

Database query verification schemes provide correctness guarantees for database queries. Typically such guarantees are required and advisable where queries are executed on untrusted servers. This need to verify query results, even though they may have been executed on one’s own database, is something new that has arisen with the advent of cloud services. The traditional model of hosting one’s own databases on one’s own servers did not require such verification because the hardware and software were both entirely within one’s control, and therefore fully trusted. However, with the economical and technological benefits of cloud services beckoning, many are now considering outsourcing both data and execution of database queries to the cloud, despite obvious risks. This survey paper provides an overview into the field of database query verification and explores the current state of the art in terms of query execution and correctness guarantees provided for query results. We also provide indications towards future work in the area.     

南水北调中线工程几个技术问题的解决与思考

根据南水北调中线一期工程建设过程中的科技攻关,本文重点介绍了长距离自流输水线路输水型式选择、施工测量控制、混凝土重力坝再加高和软基中承受内水压力的水工隧洞设计施工中的几个关键技术问题,系统阐述了上述关键技术问题的解决思路和作者的再思考。     

Use and non‐use of VDTs—organization of terminal work: Research findings from Swedish cross‐site studies in the field of office automation

A group of users in Copenhagen were asked to evaluate how important a number of user interface characteristics were for them. The results show high importance of efficient daily use and of possibilities for exploratory learning while tutorial materials were of less importance. Users also were asked to evaluate four usability aspects of a number of popular programs. Results show that the quality pleasant to work with has the largest impact on evaluations of overall user‐friendliness while users seem able to view usability independently from the number of features in an application.     

Application Development Productivity Tools: A Survey Of Importance and Popularity

Application development productivity is becoming an increasingly important issue in the MIS department. Unfortunately, dramatic improvements in hardware performance have not been matched with corresponding advances in software development, even though there have been significant investments in productivity tools. This article identifies a range of productivity tools and presents results from a survey of MIS managers that reveals which specific tools are being used and their relative importance to software development productivity.