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341.
Tan Liangkui 《中国水运》2006,(2)
围绕安全通航这个中心,加强全局性、前瞻性、规律性问题的研究,以优化通航环境、构建辖区和谐通航为目标,认真履行检查临督职责,确保船闸单线运行期间党风廉政建设和行风建设不出任何问题。 相似文献
342.
该文从开发适应04新版公路桥规简支梁计算程序的必要性出发,详细介绍了作者开发面向对象的简支梁程序的核心计算原则和算法,并将结果和国内软件进行比较,同时给出了面向对象程序的设计方法,具有很强的实用性。 相似文献
343.
The aim of this article is to discuss theoretically and to study empirically how Norwegian drivers' willingness to pay (WP) for not losing their driving licence vary with their personal characteristics. The theoretical discussion and empirical results are based on standard microeconomic theory and contingent valuation, respectively. The WP values increase concavely with the length of the suspension period of the driving licence and differ greatly between drivers. They increase significantly with a driver's income, dependence on the car at work and driving experience. Moreover, male drivers, young drivers and drivers living in rural areas have higher WP values than their counterparts. Consequently, driving licence suspension will deter drivers to different extents. The relative impacts of the above explanatory variables on the WPs are, broadly speaking, independent of the length of the suspension period. 相似文献
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345.
饶世权 《上海交通大学学报(哲学社会科学版)》2001,9(4):43-46,56
人身保险合同订立中,作为要约书面形式的投保书通常未标明有效期限,为合理分担合同未成立前的风险,保证交易的安全,实现当事人间利益的平衡和社会正义,应当强制保险人在法定时间或合理期限内答复, 而无论承诺与否;否则,即构成默示承诺。 相似文献
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348.
Noise and vibration are two of the main problems associated with railways in residential areas. To ensure quality of life and well-being of inhabitants living in the vicinity of railway paths, it is important to evaluate, understand, control and regulate railway noise and vibration. Much attention has been focused on the impact of noise from railway traffic but the consideration of railway-induced vibration has often been neglected. This paper aims to provide policy guidance based on results obtained from the analyses of relationships estimated from ordinal logit models between human response, railway noise exposure and railway vibration exposure. This was achieved using data from case studies comprised of face-to-face interviews (N = 931), internal vibration measurements (N = 755), and noise calculations (N = 688) collected within the study “Human Response to Vibration in Residential Environments” by the University of Salford, UK. Firstly, the implications of neglecting vibration in railway noise policies are investigated. The findings suggest that it is important to account for railway induced vibrations in future noise and transport policies, as neglecting vibrations results in an underestimation of people highly annoyed by noise. Secondly, implications of neglecting different types of railway sources are presented. It was found that the impact of noise and vibration form maintenance operations should be better understood and should be taken into account when assessing the environmental impact of railways in residential environments. Finally, factors that were found to influence railway vibration annoyance are presented and expressed as weightings. The data shows that factors specific to a particular residential area should also be taken into account in future vibration policies as the literature shows that attitudinal, socio-demographic and situational factors have a large influence on vibration annoyance responses. This work will be of interest to researchers and environmental health practitioners involved in the assessment of vibration complaints, as well as to policy makers, planners and consultants involved in the design of buildings and railways. 相似文献
349.
关腾飞 《武汉船舶职业技术学院学报》2012,(4):25-29
以STCW公约马尼拉修正案全面履约要求为出发点,按照高等职业技术教育教学规律,提出了高职航海技术专业课程内容遴选、课程体系构建、课程内容序化、课程教学实施标准制订等基本教学要素的改革思路。 相似文献
350.
Autonomous vehicles use sensing and communication technologies to navigate safely and efficiently with little or no input from the driver. These driverless technologies will create an unprecedented revolution in how people move, and policymakers will need appropriate tools to plan for and analyze the large impacts of novel navigation systems. In this paper we derive semiparametric estimates of the willingness to pay for automation. We use data from a nationwide online panel of 1260 individuals who answered a vehicle-purchase discrete choice experiment focused on energy efficiency and autonomous features. Several models were estimated with the choice microdata, including a conditional logit with deterministic consumer heterogeneity, a parametric random parameter logit, and a semiparametric random parameter logit. We draw three key results from our analysis. First, we find that the average household is willing to pay a significant amount for automation: about $3500 for partial automation and $4900 for full automation. Second, we estimate substantial heterogeneity in preferences for automation, where a significant share of the sample is willing to pay above $10,000 for full automation technology while many are not willing to pay any positive amount for the technology. Third, our semiparametric random parameter logit estimates suggest that the demand for automation is split approximately evenly between high, modest and no demand, highlighting the importance of modeling flexible preferences for emerging vehicle technology. 相似文献