Transportation Commons^™

A Two-Stage Parallel Network Dea Model For Analyzing The Operational Capability Of Container Terminals, Jaehun Park, Byung Kwon Lee, Joyce M. W. Low

Research Collection Lee Kong Chian School Of Business

This study proposes a systematical approach to evaluate the operational capability of container terminals and discusses the effect of resource usages on operational performances. Two inter-dependent processes (i.e. the loading-discharging (L&D) and the delivery-receiving (D&R) operational processes) with shared/non-shared resources and common/separate productions are examined and characterized as a two-stage parallel network. An evaluation model is developed upon the principles of data envelopment analysis (DEA) to assess the operational capability of the terminals. Using the real-world dataset of 9 container terminals at Port of Busan, comparative performance results are obtained for 5 years spanning across 2014–2018. The proposed model demonstrates …

Density Of Demand And The Consumer Benefit From Uber, Matthew H. Shapiro

Research Collection School Of Economics

Uber has attracted the attention of economists and policy makers for its innovations in the taxicab market and its potential for significant consumer welfare gains. The size of this gain depends in part on whether these innovations permit transactions previously costly or infeasible. Using New York City — the largest taxi market in the country — as its context, this paper estimates the level of any technological advantage Uber has over hail taxis in matching to consumers. I combine publicly available transportation data with data scraped from Uber and traffic cameras to estimate a model of the demand for transportation …

Development Of A Statistical Model To Predict Materials’ Unit Prices For Future Maintenance And Rehabilitation In Highway Life Cycle Cost Analysis, Changmo Kim, Ghazan Khan, Brent Nguyen, Emily L. Hoang

Mineta Transportation Institute

The main objectives of this study are to investigate the trends in primary pavement materials’ unit price over time and to develop statistical models and guidelines for using predictive unit prices of pavement materials instead of uniform unit prices in life cycle cost analysis (LCCA) for future maintenance and rehabilitation (M&R) projects. Various socio-economic data were collected for the past 20 years (1997–2018) in California, including oil price, population, government expenditure in transportation, vehicle registration, and other key variables, in order to identify factors affecting pavement materials’ unit price. Additionally, the unit price records of the popular pavement materials were …

Analysis Of High-Speed Rail Operations Using Vissim Simulation To Determine Access Charges And The Impact Of Incidents On A Shared Network, Komal Sree Teja Boyapati

UNLV Theses, Dissertations, Professional Papers, and Capstones

Shared High-Speed Rail (HSR) networks are networks where two or more railway operators use the same railway network infrastructure for train operations. The train operations in the shared HSR network can be composed of different types of trains operating at different speeds with varying stops at stations in a network. The interactions between different types of trains in the shared HSR network depends on the characteristics of the network’s infrastructure and train operations, and affect the capacity of the network. When a rail operator who owns the infrastructure allows other operators to access its infrastructure, the additional traffic will lead …

A Parametric Analysis Of A Turbofan Engine With An Auxiliary Bypass Combustion Chamber – The Turboaux Engine, Kaleab Fetahi

Mechanical & Aerospace Engineering Theses & Dissertations

A parametric study of a novel turbofan engine with an auxiliary combustion chamber, nicknamed the TurboAux engine is presented. The TurboAux engine is conceived as an extension of a low-bypass turbofan engine with an auxiliary bypass annular combustion chamber around the core stream. The study presented in this thesis is motivated by the need to facilitate clean secondary burning of fuel at temperatures higher than conventionally realized, from air exiting the low-pressure compressor. The parametric study starts by analyzing the turbojet engine and its performance with and without an afterburner segment attached. Following that, the conventional turbofan and its mixing …

Methodologies To Quantify Transit Performance Metrics At The System-Level Using High-Resolution Gps, Stop-Level, And Gtfs Archived Transit Data, Travis Bradley Glick

Dissertations and Theses

Performance metrics have typically focused at two main scales: a microscopic scale that focuses on specific locations, time-periods, and trips; and, a macroscopic scale that averages metrics over longer times, entire routes, and networks. When applied to entire transit systems, microscopic methodologies often have computational limitations while macroscopic methodologies ascribe artificial uniformity to non-uniform analysis areas. These limitations highlight the need for a middle approach.

This dissertation presents a mesoscopic analysis based around timepoint-segments, which are a novel application of an existing system for many transit agencies. For this research, routes are divided into a consecutive group of bus stops …

Racial Disparities In Traffic Enforcement, Mike Dolan Fliss

PSU Transportation Seminars

Law enforcement traffic stops are one of the most common entryways to the US justice system, with significant downstream impacts for both individuals and communities. Group-specific rates are typically based on jurisdiction resident populations; these rates, like many justice-system indicators, demonstrate race-ethnicity disparities. Residential-based rates implicitly assume race-ethnicity groups have equal vehicle access, equal driving volume, and that all driving occurs in resident’s jurisdictions. In contrast, surveys suggest Black non-Hispanic and Hispanic households have less access and drive less than white non-Hispanic households. Models incorporating US Census data and race-ethnicity driving factors from the 2017 National Household Travel Survey showed …

Curating Equitable Transportation, Nikotris Perkins

PSU Transportation Seminars

Getting people and goods from here to there is central to the ways we live, work, and play in the United States. The transportation networks we create as planners, engineers, geologists, contractors, consultants, advocates, and citizens involve a multitude of decisions. These decisions have great impact on who can get where, when and how; often connected to our structures of social power. This seminar connects those dots, questions our ability to make change, and calls participants to be actively involved in a transportation system that is curated for those it targets: everyone.

Webinar: Bus Stops: Access And Equity, Keith Bartholomew

TREC Webinar Series

Improving bus stops by providing shelters, seating, signage, and sidewalks is relatively inexpensive and popular among riders and local officials. Making such improvements, however, is not often a priority for U.S. transit providers because of competing demands for capital funds and a perception that amenities are not tied to measurable increases in system effectiveness or efficiency. This webinar focuses on the role that bus stops play as the point of first contact between transit agencies and their potential riders, and how the quality of that contact can influence both ridership and accessibility for riders with mobility-related disabilities. The webinar will …

At The Intersection Of Safety + Race + Transportation, Charlene Mcgee

PSU Transportation Seminars

Transportation policies at the local, regional, state and national levels have a direct impact on urban land use and development patterns. Transportation intersects with multiple areas including public health, education, climate change, physical activity, health outcomes, build environment, violence, safety, social cohesion and the wellness of communities. For the health outcomes influenced by transportation, disparities exist by race, ethnicity, and socioeconomic status in Multnomah County. Disproportionate exposure to injury, air pollution, and noise contributes to inequitable burdens of injuries and chronic disease among race and ethnic groups. This is exacerbated by lack of access to safe places for active transportation …

Feasibility Study Of The Implementation Of An Effective And Eco-Friendly Energy Management System : Case Study Of Palermo's Fincantieri Shipyard, Bryan Singer Asturias

World Maritime University Dissertations

No abstract provided.

A Study On The Environmental Impact Of A Fully Battery-Powered Electric Waterborne Transport Along Davao City To Igacos Route : A Life Cycle Assessment, Rejard Villegas Marfe

World Maritime University Dissertations

No abstract provided.

Factors Influencing The Dry Bulk Sales And Purchase Market : Capesize Vessels, Alexandros N. Atzas

World Maritime University Dissertations

No abstract provided.

Why And How To Reduce Port Waiting Time : A Case Study Of Umm Qasr Port, Walaa Taher Altop

World Maritime University Dissertations

No abstract provided.

Maritime Surveillance In Egypt : Status Of Vessel Traffic Management System And Opportunities For Future Improvements, Esslam Abdelfattah Hassan

World Maritime University Dissertations

No abstract provided.

An Impact Of Maritime Trade On The Nigerian Economy, Femi Emmanuel Ogunleye

World Maritime University Dissertations

No abstract provided.

Modelling The Investment Decision In The Dry Bulk Sector : The Choice Of A Second Hand Vessel Versus A Newly Built Vessel, Rikki Quenessa Lambey

World Maritime University Dissertations

No abstract provided.

Evaluation On Ethiopian "Fob" (Free On Board) Directive : Cost -Benefit Analysis On Sea Transport Cost Of Ethiopian Containerized And Dry Bulk Import Goods, Eskedar Behailu Amare

World Maritime University Dissertations

No abstract provided.

Mind The Cap : Case Study Of Sulpher 2020 Cap For Vietnam Tanker Joint Stock Company, Tran Hai Au La

World Maritime University Dissertations

No abstract provided.

Case Study Of Audit In Turkmenistan In Accordance With Iii Code For Strategy, Hojanepes Gulyyev

World Maritime University Dissertations

No abstract provided.