Open Access Theses and Dissertations

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1. CHEN SHUKAI. URBAN AUTONOMOUS TRANSPORT SYSTEMS: INCENTIVE PROGRAM, DEDICATED LANES, AND FLEET OPERATION.

Degree: 2021, National University of Singapore

URL: https://scholarbank.nus.edu.sg/handle/10635/185500 

Subjects/Keywords: autonomous vehicles; subsidy; dedicated lanes; fleet operation; first-mile ridesharing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

SHUKAI, C. (2021). URBAN AUTONOMOUS TRANSPORT SYSTEMS: INCENTIVE PROGRAM, DEDICATED LANES, AND FLEET OPERATION. (Thesis). National University of Singapore. Retrieved from https://scholarbank.nus.edu.sg/handle/10635/185500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

SHUKAI, CHEN. “URBAN AUTONOMOUS TRANSPORT SYSTEMS: INCENTIVE PROGRAM, DEDICATED LANES, AND FLEET OPERATION.” 2021. Thesis, National University of Singapore. Accessed April 12, 2021. https://scholarbank.nus.edu.sg/handle/10635/185500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

SHUKAI, CHEN. “URBAN AUTONOMOUS TRANSPORT SYSTEMS: INCENTIVE PROGRAM, DEDICATED LANES, AND FLEET OPERATION.” 2021. Web. 12 Apr 2021.

Vancouver:

SHUKAI C. URBAN AUTONOMOUS TRANSPORT SYSTEMS: INCENTIVE PROGRAM, DEDICATED LANES, AND FLEET OPERATION. [Internet] [Thesis]. National University of Singapore; 2021. [cited 2021 Apr 12]. Available from: https://scholarbank.nus.edu.sg/handle/10635/185500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

SHUKAI C. URBAN AUTONOMOUS TRANSPORT SYSTEMS: INCENTIVE PROGRAM, DEDICATED LANES, AND FLEET OPERATION. [Thesis]. National University of Singapore; 2021. Available from: https://scholarbank.nus.edu.sg/handle/10635/185500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Ñahuis, Fernando Vladimir Cerna [UNESP]. Modelos de programação matemática para o gerenciamento de energia em modernos sistemas de distribuição de energia elétrica.

Degree: 2017, Universidade Estadual Paulista (UNESP)

URL: http://hdl.handle.net/11449/148871 

Submitted by FERNANDO VLADIMIR CERNA ÑAHUIS null ([email protected]) on 2017-02-22T17:36:35Z No. of bitstreams: 1 TESE-FINAL.pdf: 2994686 bytes, checksum: 5e487b40d4aeb0006f40a0abdb9d9af6 (MD5)

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Made available in DSpace on 2017-02-24T20:11:29Z (GMT). No. of bitstreams: 1 nahuis_fvc_dr_ilha.pdf: 2994686 bytes, checksum: 5e487b40d4aeb0006f40a0abdb9d9af6 (MD5) Previous issue date: 2017-02-17

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Nesta tese são apresentados três modelos de programação matemática que abordam os problemas de otimização relacionados ao gerenciamento da energia nos sistemas de distribuição de energia elétrica (SDEE), como: 1) Programação ótima das entregas e carregamento dos veículos elétricos (VEs) durante a navegação em um mapa de cidade, 2) Gerenciamento ótimo pelo lado da demanda considerando um sistema fotovoltaico híbrido (SFH) em uma residência em baixa tensão (RBT) no SDEE, e 3) O melhoramento do fator de carga (FC) do SDEE através do controle da demanda. O primeiro problema visa minimizar os custos relacionados com a manutenção e geração de horas extra durante a operação de uma frota de VEs, levando em conta um conjunto de entregas pre-especificadas, assim como, pontos de carregamento alocados ao longo de cada via urbana (principal e/ou secundária) pertencente ao mapa da cidade. No segundo problema, para uma residência em baixa tensão é planejado um perfil ótimo de consumo para o dia seguinte. Este perfil de consumo é obtido através de um programa de gerenciamento pelo lado da demanda (GLD) que considera uma estrutura tarifária e um esquema de operação que otimiza os recursos energéticos vindos de um SFH e o SDEE. Para cada problema de otimização é apresentado o seu correspondente modelo de programação não linear inteiro misto (PNLIM). O terceiro problema visa minimizar os custos por compra de energia (consumo e perdas de potência ativa) da concessionária, levando em conta, o controle da demanda dos usos-finais, presentes nas unidades consumidoras (residenciais, comerciais, e industriais) no SDEE. As incertezas na utilização dos usos-finais nas unidades consumidoras são simuladas através de um algoritmo Monte Carlo. Além disso, o modelo proposto PIMRQ é rodado dentro de um processo iterativo, que visa a melhoria do FC do SDEE. Por outro lado, através destes modelos não-lineares, a solução ótima global não é garantida, enquanto o uso de modelos equivalentes (para o primeiro e segundo problema, sendo um modelo aproximado para o terceiro) de programação linear inteira mista (PLIM) resolvidos por ferramentas de otimização clássica existentes garantem a convergência para a solução ótima global. Por conseguinte, para resolver este inconveniente, os seus modelos MILP equivalentes são obtidos e explicados em detalhe. Os…

Advisors/Committee Members: Universidade Estadual Paulista (UNESP), Flores, Marcos Júlio Rider [UNESP].

Subjects/Keywords: Modelos de programação matemática; Mapa de cidade; Operação de uma frota de VEs; Gerenciamento pelo lado da demanda; Sistema fotovoltaico híbrido; City map; Demand side management; Hybrid photovoltaic system; Mathematical programming models; Operation of a fleet of EVs

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Ñahuis, F. V. C. [. (2017). Modelos de programação matemática para o gerenciamento de energia em modernos sistemas de distribuição de energia elétrica. (Doctoral Dissertation). Universidade Estadual Paulista (UNESP). Retrieved from http://hdl.handle.net/11449/148871

Chicago Manual of Style (16th Edition):

Ñahuis, Fernando Vladimir Cerna [UNESP]. “Modelos de programação matemática para o gerenciamento de energia em modernos sistemas de distribuição de energia elétrica.” 2017. Doctoral Dissertation, Universidade Estadual Paulista (UNESP). Accessed April 12, 2021. http://hdl.handle.net/11449/148871.

MLA Handbook (7th Edition):

Ñahuis, Fernando Vladimir Cerna [UNESP]. “Modelos de programação matemática para o gerenciamento de energia em modernos sistemas de distribuição de energia elétrica.” 2017. Web. 12 Apr 2021.

Vancouver:

Ñahuis FVC[. Modelos de programação matemática para o gerenciamento de energia em modernos sistemas de distribuição de energia elétrica. [Internet] [Doctoral dissertation]. Universidade Estadual Paulista (UNESP); 2017. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/11449/148871.

Council of Science Editors:

Ñahuis FVC[. Modelos de programação matemática para o gerenciamento de energia em modernos sistemas de distribuição de energia elétrica. [Doctoral Dissertation]. Universidade Estadual Paulista (UNESP); 2017. Available from: http://hdl.handle.net/11449/148871

3. Park, Yongha. Studies in Airline and Aviation Efficiency.

Degree: PhD, Geography, 2017, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu149261466159752 

Operations in air transportation systems are the consequence of complex interactions among passengers, operators, and policymakers, within their respective local and global contexts. This research investigates the aviation operations and passenger trip flows in air transportation networks by utilizing a variety of empirical sources at varying geographic scales. It focuses on two key aspects of airline/aircraft operations: operational efficiency, and the impacts of current operational practices on passenger trips. To explore the first topic, empirical assessments of aircraft operations in US and global aviation markets are conducted, based on aircraft fuel burn and operating cost performance models. These models are also utilized to examine the cost-efficient fleet configuration problem in an optimization framework. Seating configuration and flight length are observed as key factors differentiating the empirical aircraft fuel burn rates, across geographic markets and operating aircraft types. The resulting heterogeneity of aircraft operational efficiency is an empirical indication based on the current operational practices of airlines for their aircraft fleets and seating configurations, and should be considered as a substantial factor in current emission-related debates over airline carbon tax policies. Also, through a comparative analysis of cost-efficient fleets given the operational reality in the US aviation markets, the study demonstrates gaps between actual use and fleet deployments designed to minimize operating costs, suggesting that combining large and small aircraft to reduce operating costs is a viable alternative for a wide range of segment markets of varying sizes and lengths. To investigate the leverage of operational practices on passenger journeys, the differential roles of hub and local airports in the US aviation markets are focused. The author designed an air transport-focused OD synthesis model to predict US domestic and international passenger trips at a disaggregated level, by reconciling public and commercial air traffic databases within different geographic boundaries. This model is validated with empirical domestic trip samples. Also, sensitivity tests for the model’s core terms are conducted, which allow us to examine the possible range of prediction, particularly for international trips. The results show that the hub facilities’ roles are geographically uneven, functioning disproportionally for domestic and international connecting trips. For local airports, on the other hand, a bivariate accessibility measure is used to analyze spatio-temporal variations in trip demand and the trip efficiency of local passengers. Overall, the study demonstrates a vulnerability in service quality at the local airports, affected by airlines’ changeable routing strategies and local/global situations. The results also highlight the need to reevaluate the Essential Air Service (EAS) program, a subsidy policy for rural airports. Advisors/Committee Members: O'Kelly, Morton (Advisor).

Subjects/Keywords: Geography; Transportation; Transportation Planning; Urban Planning; Global aircraft fleet operation; Cost-efficient fleet; Route Flow Estimator; Airport accessibility; Essential Air Service

…23 2.5.2 Fleet operation and variations of seat configurations… …36 Chapter 3: Examination of cost-efficient aircraft fleets using empirical operation data… …43 3.2.1 Core issues on the aircraft fleet operations… …52 3.4 Fleet configuration models for minimizing DOC… …172 xi List of Tables Table 2.1 Annual fleet operations with estimated fuel use totals… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Park, Y. (2017). Studies in Airline and Aviation Efficiency. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu149261466159752

Chicago Manual of Style (16th Edition):

Park, Yongha. “Studies in Airline and Aviation Efficiency.” 2017. Doctoral Dissertation, The Ohio State University. Accessed April 12, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu149261466159752.

MLA Handbook (7th Edition):

Park, Yongha. “Studies in Airline and Aviation Efficiency.” 2017. Web. 12 Apr 2021.

Vancouver:

Park Y. Studies in Airline and Aviation Efficiency. [Internet] [Doctoral dissertation]. The Ohio State University; 2017. [cited 2021 Apr 12]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu149261466159752.

Council of Science Editors:

Park Y. Studies in Airline and Aviation Efficiency. [Doctoral Dissertation]. The Ohio State University; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu149261466159752

.