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Transportation Planning & Policy eJournal最新文献

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Vehicle Planning in Cross Chain Control Centers 跨链控制中心车辆规划
Transportation Planning & Policy eJournal Pub Date : 2012-07-12 DOI: 10.2139/ssrn.2104084
M. Schijndel, J. Braat
{"title":"Vehicle Planning in Cross Chain Control Centers","authors":"M. Schijndel, J. Braat","doi":"10.2139/ssrn.2104084","DOIUrl":"https://doi.org/10.2139/ssrn.2104084","url":null,"abstract":"To satisfy the growing need for efficient supply chain orchestration, a Cross Chain Control Center (4-C) might be an effective concept. A 4-C is a center from which multiple supply chains are controlled simultaneously, thereby aiming to exploit synergetic potential. This article proposes optimization approaches for transport timetabling and vehicle routing of multiple shippers that are controlled by a 4-C. We associate inconvenience with the requirement that shippers typically need to deviate from their individual schedules in order to make collaboration possible. This brings up a natural trade-off between inconvenience and transportation costs, which forms the essence of the proposed optimization models. Next, we pay attention to a fair redistribution of exploited synergy to the collaborating shippers. By considering several test cases, we find perfectly intuitively clear results supporting the applicability of this new approach to supply chain collaboration.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128159435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
2012 New Developments in Supply Chain Security Strategy 2012供应链安全战略新进展
Transportation Planning & Policy eJournal Pub Date : 2012-01-28 DOI: 10.2139/SSRN.1994443
C. Allen
{"title":"2012 New Developments in Supply Chain Security Strategy","authors":"C. Allen","doi":"10.2139/SSRN.1994443","DOIUrl":"https://doi.org/10.2139/SSRN.1994443","url":null,"abstract":"Supply chain security witnessed two new developments in the opening weeks of 2012. On January 25, 2012, the Obama Administration released a new “National Strategy for Global Supply Chain Security.” That same month, the World Economic Forum released a report titled “New Models for Addressing Supply Chain and Transport Risk.” The common theme in the two documents is the continuing need to enhance the resiliency of global supply chains. Both documents emphasize the need for government-industry cooperation. The WEF report also highlights the value of scenario planning as a tool to address supply chain and transport risk.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133797978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Industrial Upgrading and Global Recession: Evidence of Hard Disk Drive and Automotive Industries in Thailand 产业升级与全球衰退:泰国硬盘驱动器和汽车工业的证据
Transportation Planning & Policy eJournal Pub Date : 2011-05-01 DOI: 10.2139/ssrn.1852163
Archanun Kohpaiboon, N. Poapongsakorn
{"title":"Industrial Upgrading and Global Recession: Evidence of Hard Disk Drive and Automotive Industries in Thailand","authors":"Archanun Kohpaiboon, N. Poapongsakorn","doi":"10.2139/ssrn.1852163","DOIUrl":"https://doi.org/10.2139/ssrn.1852163","url":null,"abstract":"This paper illustrates the upgrading experiences of the automotive and hard disk drive (HDD) industries in Thailand, chosen because of their outstanding export performance in the developing world. An understanding of their upgrading experiences can shed some light on the ongoing debate regarding the relative importance of international production networks (IPNs) and industrial clusters (ICs) and their implications for prudential industrial policy. The impact of the recent global recession is also discussed in this paper. There is evidence of industrial upgrading in both the automotive and HDD industries. Yet one primary policy challenge still remains, that is, the limited role of indigenous suppliers in the multinational enterprise (MNE) production networks. This limited role is, to a certain extent, related to the overall incentive structure. Where these two industries differ is in their mode of networking, that is, whether they are part of an IPN or an IC. In the case of the automotive industry, industrial clustering has been observed and has reached a level where the local content of a locally manufactured vehicle is approaching 100%. In the case of the HDD industry, industrial clustering has naturally occurred and reached a certain level.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122558749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
The Impact of Exogenous Asymmetry on Trade and Agglomeration in Core-Periphery Model 核心-外围模型中外生不对称对贸易和集聚的影响
Transportation Planning & Policy eJournal Pub Date : 2011-03-16 DOI: 10.2139/ssrn.1787832
A. Sidorov
{"title":"The Impact of Exogenous Asymmetry on Trade and Agglomeration in Core-Periphery Model","authors":"A. Sidorov","doi":"10.2139/ssrn.1787832","DOIUrl":"https://doi.org/10.2139/ssrn.1787832","url":null,"abstract":"The paper studies the Krugman's CP model in the weakly explored case of asymmetric regions in two settings: international trade and agglomeration processes. First setting implies that the industrial labor is immobile, while second one consider mobile industrial labor and long-run equilibria. Analytical study of both settings requires application of advanced mathematical analysis, e.g. implicit function theory. For international trade we find how equilibrium prices, production, consumption, wages and welfare for all population groups respond to shifts in all exogenous parameters: characteristics of utility function, transportation costs and degree of asymmetry in initial labor endowment. As for agglomeration process, it was found that the asymmetry in the population distribution simplifies pattern of agglomeration, making the direction of migration more definite, so the well-known ambiguity of final destination may disappear under sufficiently large extent of asymmetry. From political point of view, it means that under some conditions, openness of international trade may be harmful to immobile population of the smaller country.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123983285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
One for the Road: Public Transportation, Alcohol Consumption, and Intoxicated Driving 一个在路上:公共交通、酒精消费和醉酒驾驶
Transportation Planning & Policy eJournal Pub Date : 2010-04-01 DOI: 10.3386/W15872
C. K. Jackson, Emily Greene Owens
{"title":"One for the Road: Public Transportation, Alcohol Consumption, and Intoxicated Driving","authors":"C. K. Jackson, Emily Greene Owens","doi":"10.3386/W15872","DOIUrl":"https://doi.org/10.3386/W15872","url":null,"abstract":"We exploit arguably exogenous train schedule changes in Washington DC to investigate the relationship between public transportation provision, the risky decision to consume alcohol, and the criminal decision to engage in alcohol-impaired driving. Using a triple differences strategy, we provide evidence that overall there was little effect on DUI arrests, alcohol related fatal traffic and alcohol related arrests. However, we find that these overall effects mask considerable heterogeneity across geographic areas and spatial shifting. Specifically, we find that areas close to bars that are within walking distance to Metro stations experience increases in alcohol related arrests and decreases in DUI arrests.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129524077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Survival of the Un-fittest: Why the Worst Infrastructure Gets Built - and What We Can Do about It 《适者生存:为什么建造最差的基础设施——以及我们能做些什么
Transportation Planning & Policy eJournal Pub Date : 2009-12-01 DOI: 10.2139/ssrn.2229768
B. Flyvbjerg
{"title":"Survival of the Un-fittest: Why the Worst Infrastructure Gets Built - and What We Can Do about It","authors":"B. Flyvbjerg","doi":"10.2139/ssrn.2229768","DOIUrl":"https://doi.org/10.2139/ssrn.2229768","url":null,"abstract":"The article first describes characteristics of major infrastructure projects. Second, it documents a much neglected topic in economics: that ex ante estimates of costs and benefits are often very different from actual ex post costs and benefits. For large infrastructure projects the consequences are cost overruns, benefit shortfalls, and the systematic underestimation of risks. Third, implications for cost--benefit analysis are described, including that such analysis is not to be trusted for major infrastructure projects. Fourth, the article uncovers the causes of this state of affairs in terms of perverse incentives that encourage promoters to underestimate costs and overestimate benefits in the business cases for their projects. But the projects that are made to look best on paper are the projects that amass the highest cost overruns and benefit shortfalls in reality. The article depicts this situation as 'survival of the unfittest'. Fifth, the article sets out to explain how the problem may be solved, with a view to arriving at more efficient and more democratic projects, and avoiding the scandals that often accompany major infrastructure investments. Finally, the article identifies current trends in major infrastructure development. It is argued that a rapid increase in stimulus spending, combined with more investments in emerging economies, combined with more spending on information technology is catapulting infrastructure investment from the frying pan into the fire. Copyright 2009, Oxford University Press.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124558992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 439
The Myth of Unbundling the Railways in the Czech Republic 捷克共和国拆分铁路的神话
Transportation Planning & Policy eJournal Pub Date : 2009-09-15 DOI: 10.2139/ssrn.2387667
T. Otáhal
{"title":"The Myth of Unbundling the Railways in the Czech Republic","authors":"T. Otáhal","doi":"10.2139/ssrn.2387667","DOIUrl":"https://doi.org/10.2139/ssrn.2387667","url":null,"abstract":"Does unbundling ensure efficient railway transportation? The separation of railway operators and infrastructure is supposed to ensure efficient railway transportation. However, the experience with the unbundling of the railway operation in the Czech Republic suggests that unbundling does not work. In this paper, we investigate the hypothesis that the Czech railways represent an example of a network industry which is more efficient when it is concentrated. Therefore, the unbundling of railways in the Czech Republic favors particular political interests instead of efficient operation. Our hypothesis is supported by the growth of per unit costs that indicates the inefficient operation of unbundled Czech railways. We also looked at the volume of subsidies and the productivity of labor which indicate the particular interests of politicians and the management of the Czech railways.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114996763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
How Do Gasoline Prices Affect Fleet Fuel Economy? 汽油价格如何影响车队燃油经济性?
Transportation Planning & Policy eJournal Pub Date : 2008-10-01 DOI: 10.1257/POL.1.2.113
Shanjun Li, Roger H. von Haefen, C. Timmins
{"title":"How Do Gasoline Prices Affect Fleet Fuel Economy?","authors":"Shanjun Li, Roger H. von Haefen, C. Timmins","doi":"10.1257/POL.1.2.113","DOIUrl":"https://doi.org/10.1257/POL.1.2.113","url":null,"abstract":"Exploiting a rich data set of passenger vehicle registrations in twenty U.S. metropolitan statistical areas from 1997 to 2005, we examine the effects of gasoline prices on the automotive fleet's composition. We find that high gasoline prices affect fleet fuel economy through two channels: (1) shifting new auto purchases towards more fuel-efficient vehicles, and (2) speeding the scrappage of older, less fuel-efficient used vehicles. Policy simulations based on our econometric estimates suggest that a 10% increase in gasoline prices from 2005 levels will generate a 0.22% increase in fleet fuel economy in the short run and a 2.04% increase in the long run.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130013682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 211
Risk Prediction and Reduction in Passenger Transport Service Delivery 客运服务提供的风险预测与降低
Transportation Planning & Policy eJournal Pub Date : 2006-10-31 DOI: 10.2139/ssrn.941727
E. Enyi
{"title":"Risk Prediction and Reduction in Passenger Transport Service Delivery","authors":"E. Enyi","doi":"10.2139/ssrn.941727","DOIUrl":"https://doi.org/10.2139/ssrn.941727","url":null,"abstract":"Risk is a phenomenon that has become part of human activities. Risk is in everything and is defined according to the circumstance of the activity or event under contention. Transportation business in Nigeria is a highly risky one especially as it affects passenger transport services. The abundance of bad roads and reckless driving habits coupled with poor highway and vehicle maintenance culture tends to multiply the risk for both operators and their human cargoes. The need to effectively determine operational risk with a view to finding ways of reducing same gave rise to the research and presentation of this paper. In the course of study, records were obtained and analyzed from the offices of the Federal Road Safety Corps (FRSC) and a prominent luxury bus transport company at Onitsha. The analysis gave informed insight into the causes of road accidents and their risk factors from which a modest risk prediction model was formulated whilst offering useful suggestions on risk reduction strategies. The study also revealed that passenger transportation business operational risk is of two folds - accidental and financial risk and it is the combination of these two that determines the overall systematic risk of the business.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126409125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Assortative Matching, Adverse Selection and Durable Goods: Transaction History, Safety Regulation and the Likelihood of Trade in the Business Aircraft Market 分类匹配、逆向选择和耐用品:商务飞机市场的交易历史、安全监管和交易可能性
Transportation Planning & Policy eJournal Pub Date : 2006-06-01 DOI: 10.2139/ssrn.912510
Thomas W. Gilligan
{"title":"Assortative Matching, Adverse Selection and Durable Goods: Transaction History, Safety Regulation and the Likelihood of Trade in the Business Aircraft Market","authors":"Thomas W. Gilligan","doi":"10.2139/ssrn.912510","DOIUrl":"https://doi.org/10.2139/ssrn.912510","url":null,"abstract":"In recent years, considerable progress has occurred in modeling durable goods transactions in dynamic settings under asymmetric information. Most notable among these contributions are the works of Hendel and Lizzeri (1999, 2002), Janssen and Roy (2002), and Hendel, Lizzeri and Siniscalchi (2005). I explore registration changes for a sample of business aircraft over the period 1980-1999 to test some of the predictions of these models. The empirical regularities highlighted in this paper support these models. My results are also consistent with the view that high levels of efficiency can obtain even when information asymmetries condition the durable good trading environment.","PeriodicalId":278996,"journal":{"name":"Transportation Planning & Policy eJournal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128273415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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