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公路工程施工图预算和清单预算是不同阶段的造价文件,需分别编制,其过程繁琐,工作量大。针对施工图预算和清单预算编制数据来源一致的特点,提出二者结合编制的方法,即用一套数据文件,完成两个预算编制。 相似文献
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社会保障预算是国家用来反映社会保障资金收支及各项社会保障基金投资运营活动的特定收支计划.目前我国尚未建立起一套完整的社会保障预算体系.本文正是针对我国应如何建立社会保障预算提出了划分社会保障预算收入与支出以及社会保障预算分级管理等一系列政策建议. 相似文献
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以重庆市高速公路路面大修工程长涪高速公路、小修工程水界高速公路为例,分别采用交通部现行公路工程预算定额、预算编制办法和重庆市养护工程预算定额、养护预算编制办法编制施工图预算,并将其计算结果进行对比分析,以为不同的路面维修工程定额和编制办法的合理选用提供依据和参考。 相似文献
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研发项目预算在汽车企业的整体战略规划中占有十分重要的地位,是财务管理的重要组成部分。充分发挥研发项目预算管理方面的作用,对全面合理地运用企业技术资源,有效降低企业运营的资金及管理风险有积极作用。文章针对研发项目预算的属性,详细阐述了研发项目预算审核需关注的几个关键点。结合预算执行中出现偏差的情况,提出预算创新管理方法,时有效贯彻研发目标、合理调配技术资源和提高研发项目预算的执行率,具有实践和指导意义。 相似文献
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分析机电工程清单预算编制过程中存在的问题,借鉴工作中的经验及省内部分项目较好的预算管理模式,提出相应的改进措施,更好的确定机电工程清单预算,为高速公路机电工程造价控制提供更为合理的费用依据。 相似文献
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高速公路安全护栏设计 总被引:4,自引:1,他引:4
结合湖南省多条高速公路交通工程的具体设计实例,分析了安全设施对高速公路行车的重要性,并针对不同条件和不同护拦的特点,提出了安全护拦的设置原则。 相似文献
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高速公路成本分析与通行费定价方法探讨 总被引:3,自引:0,他引:3
阐述了高速公路的成本构成及产生原因,分析了高速公路成本及利润随时间变化的规律,提出了在计重收费模式下基于成本测算通行费费率的方法。此外,通过比较国内学者提出的各种通行费算法的不同特点,建议有关部门针对高速公路寿命周期不同阶段成本特征采用灵活的定价策略。 相似文献
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通过对片区内组成路网的新建多条道路进行汽车保有量增长状况调查,运用四阶段法进行交通量预测和服务水平评价,得出规划路网中道路断面设置能够满足设计年限内交通量增长要求的结论,并经横断面设计方案比选,得出推荐方案横断面布置等设计成果。 相似文献
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试论水利水电工程控制工程造价的有效途径 总被引:2,自引:0,他引:2
本文从控制主要工程量、控制工程综合单价入手 ,在设计、施工、概预算等方面进行分析 ,阐述了控制水利水电工程造价的几种途径和方法 相似文献
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运用经典系统工程工作分解(WBS)与组织机构分解(OBS)理论研究汽车开发的技术资源管理方法。通过车型平台化、系统模块化协同开发理念,引入平台化车型项目群组管理概念,研究同一车型平台或平台带宽上主导项目与衍生项目之间的开发关系。提出平台化车型开发管理中资源配置优化的措施。 相似文献
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基于静力试验的大跨钢管拱桥承载力的模糊神经网络评价 总被引:2,自引:0,他引:2
在深入研究现有桥梁结构承载力评价方法的基础上,把模糊理论与人工神经网络技术结合起来应用于大跨度钢管混凝土拱桥的承载力评价.建立了模糊神经网络评价模型,通过样本训练,获取评价专家的经验知识和直觉思维.经实际工程检验,评价结果直观简单,较好地反映了在役桥梁结构的承载力状况. 相似文献
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A commonly used strategy for improving mobility along signalized arterials is to coordinate neighboring intersections to minimize vehicle stops by maximizing the duration of green bands, otherwise known as arterial bandwidth. Signal coordination has been researched, developed, and refined for five decades. In lieu of traditional methods that are based on the analysis of programmed green times (which assume all phases operate at their maximum settings), a dynamic bandwidth analysis method is presented that reproduces actual dynamic bandwidth durations using closed loop signal data. The analysis is intended to help assess the performance of semi-actuated coordinated signal systems on arterial streets. In addition, the study highlights the arterial progression benefits that result from changing coordinated intersection offsets based on optimizing the dynamic, rather than the programmed, bandwidths. Detailed analysis at three arterial sites revealed that coordinated green phase time distributions are complex and multimodal and cannot be represented by a single-valued statistic. Dynamic bandwidth analysis confirmed that programmed green bandwidth consistently underestimates the size of the actual dynamic bandwidth, and exhaustive search results highlighted the potential for further improvements in coordination. Future research will include field and simulation comparative studies and the development of efficient methods for dynamic bandwidth optimization. 相似文献
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Developing travel time estimation methods using sparse GPS data 总被引:1,自引:0,他引:1
Existing methods of estimating travel time from GPS data are not able to simultaneously take account of the issues related to uncertainties associated with GPS and spatial road network data. Moreover, they typically depend upon high-frequency data sources from specialist data providers, which can be expensive and are not always readily available. The study reported here therefore sought to better estimate travel time using “readily available” vehicle trajectory data from moving sensors such as buses, taxis, and logistical vehicles equipped with GPS in “near” real time. To do this, accurate locations of vehicles on a link were first map-matched to reduce the positioning errors associated with GPS and digital road maps. Two mathematical methods were then developed to estimate link travel times from map-matched GPS fixes, vehicle speeds, and network connectivity information with a special focus on sampling frequencies, vehicle penetration rates, and time window lengths. Global positioning system (GPS) data from Interstate I-880 (California) for a total of 73 vehicles over 6 h were obtained from the University of California Berkeley's Mobile Century Project, and these were used to evaluate several travel time estimation methods, the results of which were then validated against reference travel time data collected from high resolution video cameras. The results indicate that vehicle penetration rates, data sampling frequencies, vehicle coverage on the links, and time window lengths all influence the accuracy of link travel time estimation. The performance was found to be best in the 5-min time window length and for a GPS sampling frequency of 60 s. 相似文献