全站仪在建筑测量与质量控制中的应用

全站仪已成为高层建筑施工质量控制的有效仪器,其应用简单的测量原理,采用紧凑的结构设计和方便的操作界面,集成常用的通信接口和数据总线高效、高精确度地实现对建筑测量的数据采集、计算处理和数据收发等功能。在质量控制中,全站仪可应用在复核初始数据、平面控制、高程控制和建筑物的沉降与偏移方面。应用全站仪进行建筑测量时需要注意的事项。     

一种基于Arcgis的野外地震勘探测量工序质量监控方法

在野外地震勘探测量工序中,室内测量员需要对测量过程进行严格监控,同时地震队解释组也需要对测量成果进行严格把关。从地震队解释员角度详细阐述了一种基于Arcgis的测量工序质量监控方法,包括基于Arcgis的漏点检查、偏移超限检查、安全距离检查、炮点位于检波线上检查、物理点之间最小距离检查5种质量监控方法。通过实践操作发现,该方法速度快、准确率高,是一种非常适合地震队解释组检查测量成果的好方法。     

强化地震检波器应用的标准化管理水平进一步提高地震勘探采集质量的可靠性

地震勘探是对地层的非电量电测．地震检波器是地震勘探采集的信号源头,严格地讲地震数据的采集过程就是地层声波传导反射性能的计量测试和记录过程。地震检波器相当于一次仪表。将机械震动性质的地震波转换为相应的电的波动,数字地震仪相当于二次仪表,将表征地震波信息的电的波动进行量化和存储．地震检波器与数字地震仪共同组成一个完整的地震勘探数据采集系统。地震检波器是地震数据采集第一道工序,一旦地震检波器采集的数据失误,将造成事后无法弥补的误差。因此国内外的各个地震勘探项目技术要求和甲方管理,都对地震检波器的校准和质量监控十分重视。     

GPS在高程测量中的应用

GPS技术已被广泛应用 ,其观测数据只要经过简单的处理 ,平面精度一般都能满足要求 ,但对其高程精度却颇有争议。通过适当的处理方法使其高程信息满足所需 ,将会取得事半功倍之效 ,传统高程施测手段———几何水准测量方法虽然精度较高 ,但费时费力效率低 ,GPS测量具有全天候、经济快速、无须通视等诸多优点 ,在有条件的情况下用GPS测高代替传统的高程测量是最佳的选择     

利用DOM及DEM数据进行输电工程勘测设计研究

依据山东省地理信息中心已有1／10000比例尺的DOM（数字正射影像图,Digital Orthophoto Map）和DEM（数字高程模型,Digital Elevation Model）数据,通过核线共线方程恢复生成大场景三维立体模型,然后进行架空输电线路路径优选、测量平断面图,再进行外业采集交叉跨越和重要断面数据,并用外业实际测量数据对原数据进行拟合修正,最后生成三维漫游。研究将标准测量4D数据应用到架空输电工程勘测设计全过程,通过工程实际应用,提出了应用方法及注意事项等。     

建设电力营销稽查典型案例库

正营销稽查是指依据国家有关政策、法律、法规和公司相关规章制度,对公司营销制度建设与执行、营销行为规范和营销工作质量等进行内部专业监督检查。电力营销稽查主要通过在线稽查、常态稽查、专项稽查对营销及其关联业务工作质量、营销过程中发生的异常现象,以及营销管理系统中不符合规范的数据进行监控与稽查。对发现的异常和问题,通过现场核查,确定差错,改进完善,实现客户信息及营销制度不断完善、营销及其关     

GPS技术在矿区沉降观测中的应用探讨

传统的几何水准测量方法虽然精度很高,但实施起来费时费力,且作业效率很低。GPS测量获取的点位高程是大地高,而水准测量测定的是正常高。由于正常高与大地高的精确转换需要各个点的高程异常,因此限制了GPS高程（大地高）在高程测量中的应用。能不能根据GPS测得的大地高变化来反映水准测量点的沉降量,正是本文讨论的问题。本文首先将对GPS应用于地面沉降观测的可行性做理论上的分析,再结合鄂尔多斯王家塔煤矿连续十八次的GPS和水准测量的对比观测资料进行实证研究和讨论。     

湖域地形图精度评定

在进行国家科技攻关项目《微山湖下采煤的试验与研究》过程中,对湖下试采工作面上方的湖域地形进行了测绘,查明了试验矿井湖区的湖底地形,为试采提供了可靠的技术资料。此次测绘采用了平板仪野外成图与经纬仪、测距仪测记相结合的方法。 一、湖底地形点高程误差分析 采用测距仪三角高程法测定湖底地形点的高程,以及用花杆测量水深来检查光电跟踪测定的湖底高程的正确性。     

源头数据:一次采集 共享应用

源头数据采集通过配置数据迁移软件模块,建立源头数据向勘探、开发专业数据库的迁移,保证源头数据库与勘探开发库的同步,实现一次采集全局共享。中原油田源头数据采集开始于2010年5月,经过3年多的建设,已经形成了成熟的源头数据采集管理体系和统一的源头数据资源,特别是数据的齐、全、准程度大幅提高。源头数据采集全面运行通过"十一五"期间的信息化建设,中国石化基本建立了油田企业信息化标准体系,形成了中国石化数据资源企业标准并投入运行。     

“1+3”专业管控提升用电信息采集水平

<正>加强采集运维专业化培训,制定"三个三"管理实现抄表核算全过程管控,落实"三查"制度做好规范化异常检查,加强线损实时分析做好整改。国网山东诸城供电公司开展技术创新,实现了采集异常数据异常处理的协同管理,促进了电力系统各专业的高效运作。随着用电信息采集建设实现"全覆盖""全采集",为电力系统各专业提供了基础数据支撑。在此基础上,国网山东诸城供电公司(简称:诸城公司)开展技术创新,实现了采集异常数据异常处理的协同管     

增强Linux系统安全性的措施

L inux系统的安全取决于系统管理员如何来管理它。本文探讨了一系列可以增强安全性的技巧与策略 ,包括 :系统安装原则、BIOS安全、口令安全策略、设计帐户自动注销功能、文件系统和日志安全策略、使用 SSH及 TCP-WRAPPERS,隐藏系统信息、删除所有特殊帐户、关闭控制台程序、限制系统中的 SUID/ SGID程序等。本文最后向 L inux系统管理员提出了一些安全管理方面的建议     

CIS与现代企业管理美学

概括性介绍了 ＣＩＳ（Ｃｏｒｐｏｒａｔｅ Ｉｄｅｎｔｉｔｙ Ｓｙｓｔｅｍ）的三大基本组成，并阐述了它与现代企业管理密不可分的相互联系及所处的举足轻重的地位，指出导入ＣＩＳ是现代企业谋求发展的重要手段。     

Divergent patterns of engagement in Internet standardization: Japan,Korea and China

This article analyzes the engagement of Japanese, Korean and Chinese participants in the development of Internet standards at IETF on the basis of four quantitative metrics: attendance, patenting, authorship and leadership. The results are strikingly divergent. Japanese involvement in Internet standardization began early and Japan was, for many years, second only to the U.S. in terms of IETF participation. Though Japanese participation has declined since the early 2000s, Japan remains a major contributor to IETF standardization. Korean involvement in IETF has always been significant, but below the levels of Japan and major European countries. Korean participation in IETF has also declined over the past decade, and has been dominated by one firm, Samsung. Though meaningful Chinese involvement in IETF did not begin until the mid-2000s, it has rapidly expanded in recent years. Today, China is a major player in numerous areas of Internet standardization in terms of three metrics (participation, patenting and leadership), and is rapidly gaining in terms of document authorship as well. Most of China׳s recent IETF involvement can be attributed to Huawei, though other Chinese firms have recently begun to increase their participation in the organization. Thus, contrary to some views that China׳s engagement with standardization is primarily one of indigenous innovation and “catching up”, China׳s experience with IETF demonstrates deliberate and effective engagement with a major Western standards-development organization on its own terms.     

Comparing FTTH access networks based on P2P and PMP fibre topologies

There is an ongoing discussion in the market which Next Generation Access (NGA) architecture best suits future needs and which investment and cost differences exist. The discussion can be subsumed as P2P vs. GPON, which is somewhat misleading as this article reveals. The discussion is driven by the fact that the high capital cost and the long asset life time of fibre mean that the technology choices made today will dominate the opportunities for telecommunication business of all market players, incumbents, competitors, content providers and business and residential users for many years in the future.The paper analyzes the cost and other differences between Fibre-to-the-Home (FTTH) access network architectures and their related different wholesale approaches by using the well-known and understood steady state approach applied in other NGA analyses in the past. In addition to the steady state analysis a dynamic cost evaluation is included taking into account the different investment behaviour of the FTTH architectures over time. The results describe investment and cost differences between architectures, incumbents and wholesale based competitive operators. The analysis has been performed for different geotypes (clusters) of decreasing population density in a representative European settlement structure.     

快速成形技术的应用及热点分析

基于快速成形技术的原理,展示了快速成形技术在快速模具制造、金属零件直接成形、反求工程等领域的广泛应用,总结了快速成形制造技术研究的热点,即研发新材料和新设备、提高成形精度、建立RPM的反求工程系统、建立成形技术的统一标准和扩大成形技术的应用领域。     

Whose Image is it Anyway?: Some Considerations of the Curricular Importance of Subject Image in Secondary School Design and Technology Education

This paper explores the idea that a sense of school subject image is a necessary feature of curriculum management and a potent force for change. The discussion centres on the view that all school subjects have an image and that if those intimately involved with the subject do not control the image then someone else does! In such circumstances the image is the product of past encounters and old euphemisms and is unlikely to hold the changed realities.The UK developments in Design and Technology education (the term Design and Technology is used to denote the school subject defined under this heading by the UK National Curriculum, 1995) have created something of an image problem which has interesting international parallels. Some of these problems are due to clearly discernible internal tensions and an ambiguous relationship with other subject areas.Through greater attention to subject image internal controversies might be acknowledged and resolved, relationships with other subject areas can be more meaningfully understood and practitioners can be helped to make sense of curriculum change.     

Diffusion and usage of public e-services in Europe: An assessment of country level indicators and drivers

We analyze the state of the art of indicators on e-government, e-health, e-procurement and e-participation. We survey the main methodological properties of these indicators, and highlight their heuristic potential. Further, we address empirically the issue of the explanation of the availability scores, i.e. how the supply of the various e-services in each country is affected by political, institutional and socio-economic differences, and is followed by actual usage. The econometric analysis uncovers the importance of broadband penetration and higher education as drivers for most of the types of e-services and users (citizens and businesses). Moreover, a corruption-free and agile public sector proves to be an important pre-condition for more effective supply and usage. Despite data limitations and the complexity of the underlying diffusion phenomena, our study is the first truly longitudinal contribution aimed at disentangling the common drivers of such an important phenomenon – the e-services availability and usage across European countries. As such, this work appears useful to inform the policy debate and practice, in a phase characterized by a prospective reorientation of the public e-services provision and policy agenda.     

一种高精度的频率标准比对系统

频率标准源可以提供精确的标准频率,在测定频率标准源的各项性能指标时,要求测试系统必须具有很高的比对精度。所设计的频率标准比对系统采取多级倍频 混频方式使频率偏差逐级扩大后再测量,从而避免了直接进行高次倍频的困难,提高了测量精度,可以对高精度的频率标准的准确度、长短期频率稳定度进行快速测量,是一种高精度时畴参数测量系统。     

Indigenous peoples’ nutrition transition in a right to food perspective

In indigenous communities the nutrition transition characterized by a rapid westernization of diet and lifestyle is associated with rising prevalence of chronic disease. Field work and literature reviews from two different policy environments, Argentina (Jujuy) and Canada (Nunavut), identified factors that add to indigenous peoples’ disease risk. The analytical framework was the emerging human right to adequate food approach to policies and programmes. Indigenous peoples’ chronic disease risk tends to increase as a result of government policies that infringe on indigenous peoples’ livelihoods and territories, undermining their economic system, values and solidarity networks. Policies intended to increase food security, including food aid, may also fuel the nutrition transition. There is a need to explore further the connection between well-intended policies towards indigenous peoples and the development of chronic diseases, and to broaden the understanding of the role that different forms of discrimination play in the westernization of their lifestyles, values and food habits. Food policies that take due account of indigenous peoples’ human rights, including their right to enjoy their culture, may counteract the growth of chronic disease in these communities.     

HSE走进中国石油

企业管理水平的好坏直接影响着企业的经济效益,运用HSE管理能提高企业管理水平,HSE管理模式将健康,安全,环境三者视为一个有机的整体。HSE管理认为人的安全是第一位的,人是创造财富的原动力,是企业的最大财产,HSE管理体系强调的是“蝴蝶效应”。