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91.
高校图书馆如何造就合格的学科馆员 总被引:4,自引:0,他引:4
李更良 《浙江交通职业技术学院学报》2006,7(4):76-78
根据高校图书馆现有人才状况和学科馆员的素质要求,提出了造就合格学科馆员的方法和机制。重点论述了学科馆员队伍的长效发展机制,包括培养机制、选拔机制、继续教育机制、考核机制、激励机制等。 相似文献
92.
Jacques Bourachot 《运输规划与技术》2013,36(4):271-283
This paper presents a software model for the planning of passenger railway stations. The aim of this model is the elaboration of operation programs within stations, and the evaluation of projects for the track layout. This model allows the planner to elaborate interactively an operation program, through a man‐computer dialogue, in a way similar to the manual procedure with which he is familiar. On the other hand, the model includes an optimization algorithm which can be used to automatically set routes to the trains, through the station. 相似文献
93.
Effectiveness of en route traffic information in developing countries using conventional discrete choice and neural‐network models
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Providing commuters with traffic information or advising them of alternative routes during traffic incidents can alleviate congestion. For decades, advanced traveler information services (ATIS) have been devised and dedicated to this role. ATIS comprises a wide variety of technologies across the world, including radio traffic information (RTI) advisory service. RTI is common in both developed and developing countries. Although extensive literature and evaluation results of ATISs and RTI are available in developed countries, little attention has been devoted to that in developing countries. This work provides a modeling platform to study drivers' response to en route traffic information provided by Radio‐Payam broadcasting service in Tehran, the capital city of the developing country of Iran. The results are compared with counterpart cases in developed countries. Past studies and this study have employed conventional discrete models for drivers' response, such as ordered logit and ordered probit. This work evaluates the accuracy level of these conventional models in comparison with a developed neural‐network (NN) model, because it has been widely proven that NN models are highly precise. It has also been found that, apart from reliability, the conventional models are within an acceptable level of prediction accuracy compared with the NN models. The results show a high degree of similarities between the case of Tehran and its counterparts in the developing countries. The results also deliver some insights on how to improve or better implement the ATIS technologies. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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95.
Douglas O.A. Osula 《Transportation Research Part A: Policy and Practice》1998,32(8):599-606
The paper presents a procedure that has been developed for estimating subsidization requirements for urban transit services in developing countries. The procedure is based on a subsidization policy of reducing transport expenditure burden on the average commuter, by maintaining his transport expenditure-income ratio at a reasonable level. It is designed for both regulated and deregulated transport markets. It requires, as input, historical data (previous year) on fare, productivity, and load factor for the transport service or mode concerned, the transport expenditure-income ratio distribution of the commuters, and the current level of commuter personal transport allowance. It is based on the premise that transport expenditure-income ratio is inversely related to income. The subsidization formula developed in the paper yields a level of subsidy that is commensurate with the level of control a government is able to exercise over transit operations. 相似文献
96.
汽车发动机在节能和排放领域的新进展 总被引:4,自引:0,他引:4
回顾 内燃机的发展历程,并对为降低内燃机排放而采取各种动力的汽车进行分析,指出燃油汽车仍具有很大的发展前景,论述了汽油机从化油器式直至均燃直喷式的发展历程,并阐述了它们各自的优缺点;指出了柴油机为达到提高功率密度、降低燃油消耗及改善环境的目的应采取的措施。 相似文献
97.
援外公路项目可行性考察工作重点探讨 总被引:1,自引:1,他引:0
张伟康 《铁路工程造价管理》2010,25(1):35-37
对外援助公路项目可行性考察的工作质量,关系到项目的立项、设计、施工、验交等全过程,甚至关系到我国与受援国的关系。因此,考察组应挑选业务精湛、经验丰富的技术人员,把握资料收集、技术标准确定、工程数量计算、估算编制、技术谈判等工作重点,做好援外项目的前期考察工作。 相似文献
98.
On the Depreciation of Automobiles: An International Comparison 总被引:1,自引:1,他引:1
Since older automobiles are less efficient and technologically obsolete, over-aged capital stocks are associated with higher environmental burden. Given the rapid growth of over-aged car stocks in many poor countries, the knowledge of depreciation data, depreciation patterns, and their determinants in developing countries becomes increasingly important for effective environmental policies. This paper refers to used automobile prices and generates depreciation data for a sample of 54 car models from 30 countries. We found the following results:(1) Overall, geometric depreciation appears to be a good approximation to real depreciation rates. (2) Depreciation rates are significantly lower in developing countries than in industrialized countries. (3) When using corrected prices the depreciation rates increase substantially. The average depreciation in OECD countries is 31%, whereas in non-OECD countries it is about 15%. Besides prices for new cars, the economic life of automobiles is particularly dependent on real income. In the long-run, an income increase by $1000 is likely to increase the annual depreciation rate by 2.7% in OECD countries and 3.6% in non-OECD countries. 相似文献
99.
100.
Car ownership is growing very rapidly in China; whilst this is a reflection of sustained economic growth, it presents a major challenge to Chinese transport policymakers. The consequences of China's motorization also extend beyond the national borders, however, via mechanisms such as increased demand for new automobiles produced in North America and Europe and the global atmospheric concentration of greenhouse gases. Chinese cities are also experimenting with innovative transport policies to manage increasing car ownership, which in a number of cases go beyond the menu of policy options that have traditionally been considered in the West. Despite policy interest for these reasons, China's motorization process is poorly understood, in part due to a scarcity of relevant data.This paper contributes to the body of literature regarding this phenomenon by drawing on a unique data resource: the 2011 wave of the China Household Finance Survey (n = 8438 households). This is a disaggregate national-scale survey dataset developed to monitor economic conditions in China, though to the authors' knowledge the CHFS has not previously been employed to study patterns of car ownership.We report a set of three analyses, to identify factors associated with: 1) whether a household owns at least one car, 2) multiple car ownership, and 3) whether a household owns a new car. Amongst other empirical results, we find that living in a rural area is negatively associated with car ownership, net of confounding effects, and that within towns/cities poor accessibility (i.e. long travel time) to the town/city centre is also negatively associated with car ownership. These findings regarding spatial effects are contrary to typical findings in the West, where car ownership is generally lowest in urban centres.An earlier version of this study was presented at the 2017 Transportation Research Board conference. 相似文献