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Dissertations / Theses on the topic 'Highway capacity'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Saberi, Kalaee Meead. "Investigating Freeway Speed-Flow Relationships for Traffic Assignment Applications." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/33.

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Developments in high resolution traffic sensors over the past decades are providing a wealth of empirical speed-flow data. Travel demand models use speed-flow relationships to assign traffic flows to network links. However, speed-flow relationships have not been revalidated against new detailed traffic sensor data. Therefore, it is necessary to revisit speed-flow relationships based on actual measured conditions on network links rather than assuming constant speed-flow relationships over entire highway network systems. Speed-flow relationships have been particularly difficult to calibrate and

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2

Fernandez, Leon Jose Alfredo. "Applying Mathcad to the Highway Capacity Manual." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5183.

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The objective of this study was to develop a tool for engineers and researchers to understand the underlying logic of the Highway Capacity Manual (HCM) procedures. The HCM offers a collection of methodologies and techniques for estimating the capacity and evaluation of the level of service for highway, street and transit facilities (HCM 2000). Mathcad worksheets were developed to replicate the computational procedures of five chapters of the HCM. The principal topics addressed are advantages of the Mathcad worksheets over existing implementations of the HCM, challenges associated with the i

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3

Ortiz, Logan A. "Highway work zone capacity estimation using field data from Kansas." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18224.

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Master of Science<br>Department of Civil Engineering<br>Sunanda Dissanayake<br>Although extensive research has been conducted on urban freeway capacity estimation methods, minimal research has been carried out for rural highway sections, especially sections within work zones. This study filled that void for rural highways in Kansas. This study estimated capacity of rural highway work zones in Kansas. Six work zone locations were selected. An average of six days’ worth of field data was collected, from mid-October 2013 to late November 2013, at each of these work zone sites. Two capacity estima

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4

Forsberg, Fredrik. "Increased Traffic Loads on Swedish Highway Bridges : A Case study of the bridge at highway interchange Värö." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-62026.

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The Swedish government is planning to increase the maximum vehicle gross load regulations on parts of the national roads from the present 60 t, for the load carrying capacity class BK1, to 74 t, for the proposed new load carrying capacity class BK4. The initial implementation of the new load carrying capacity class for 74 t vehicles will only regard major highways and important roads, however, at a later stage the plan is to implement the new BK4 class on the full current BK1 road network. The biggest obstacle which arises when implementing these increased traffic loads is insufficient load ca

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Al-Dawood, Abdullah Saad. "Transportation and economic development evaluation model." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39905.

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The system dynamics methodology is used to develop a computer simulation model to determine whether to add lanes to a congested highway or build a new, more direct, facility. Fundamental to this evaluation is the incorporation of non-user measures of effectiveness to go with the traditional highway user measures of effectiveness, such as the Benefit-Cost Ratio. In the system dynamics methodology three alternative forms of the model of a system are used: verbal, visual, and mathematical. The verbal description is diagrammatic and shows cause-and-effect relationships between many variables in a

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6

陳福耀 and Fuk-yiu Victor Chan. "A review of the capacity of the Highways Department to implement highway infrastructure projects in 1990's." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31966731.

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7

Chan, Fuk-yiu Victor. "A review of the capacity of the Highways Department to implement highway infrastructure projects in 1990's." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25138650.

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8

Liu, Yan. "Highway Capacity and Traffic Behavior under Connected and Automated Traffic Environment." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627667986751621.

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9

Fishelson, James. "Platooning Safety and Capacity in Automated Electric Transportation." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1949.

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Automated Electric Transportation (AET) proposes a system of automated platooning vehicles electrically powered by the roadway via wireless inductive power transfer. This has the potential to provide roadway transportation that is less congested, more flexible, cleaner, safer, and faster than the current system. The focus of this research is to show how platooning can be accomplished in a safe manner and what capacities such an automated platooning system can achieve. To accomplish this, first two collision models are developed to show the performance of automated platoons during an emergency

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10

Freckleton, Derek Rulon. "Traffic Operations Analysis of Merging Strategies for Vehicles in an Automated Electric Transportation System." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1418.

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Automated Electric Transportation (AET) is a concept of an emerging cooperative transportation system that combines recent advances in vehicle automation and electric power transfer. It is a network of vehicles that control themselves as they traverse from an origin to a destination while being electrically powered in motion – all without the use of connected wires. AET's realization may provide unparalleled returns in the form of dramatic reductions in traffic-related air pollution, our nation’s dependence on foreign oil, traffic congestion, and roadway inefficiency. More importantly, it may

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11

Durbin, Casey Thomas. "Traffic performance on two-lane, two-way highways examination of new analytical approaches /." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/durbin/DurbinC0806.pdf.

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12

Ramachandran, Suresh. "Analysis of Freeway Weaving Areas Using Corridor Simulator and Highway Capacity Manual." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35886.

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Weaving is defined as the crossing of two or more traffic streams traveling in the same direction along a significant length of the highway without the aid of traffic control devices . The traditional methods used for design and operational analysis of a highway is the Highway Capacity Manual (HCM). The traditional weaving methods in the highway capacity manual use road geometry and traffic volume as inputs and provide an estimate of speed as an output. CORSIM is a new computer simulation model developed by Federal Highway Administration (FHWA) for simulation of traffic behavior on integrated

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13

Jillella, Srinivas. "A comparative study of weaving sections in TRANSIMS and Highway Capacity Manual." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33888.

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Weaving is defined as the crossing of two or more traffic streams traveling in the same direction along a significant length of the highway without the aid of traffic control devices. The traditional methods used for the design and operational analysis of a highway is the Highway Capacity Manual (HCM). These traditional methods in the manual use road geometry and traffic volumes as input and provide an estimate of the speed as an output. TRANSIMS is a new computer simulation package in transportation that can be used as an analysis as well as a planning tool. The Microsimulator in TRANSIMS dea

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14

Zhang, Yihua. "Capacity Modeling of Freeway Weaving Sections." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/27779.

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The dissertation develops analytical models that estimate the capacity of freeway weaving sections. The analytical models are developed using simulated data that were compiled using the INTEGRATION software. Consequently, the first step of the research effort is to validate the INTEGRATION lane-changing modeling procedures and the capacity estimates that are derived from the model against field observations. The INTEGRATION software is validated against field data gathered by the University of California at Berkeley by comparing the lateral and longitudinal distribution of simulated and field

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15

Wise, Warren E. "The concept of carrying capacity as a tool for managing scenic roadways." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45950.

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<p>Increasing interest in driving for pleasure has put a burden of crowding and over-use on many of our nation's scenic highways. The carrying capacity concept says that there is an acceptable level of use or change for a resource beyond which that resource will be significantly degraded. This thesis examines the applicability of this concept to the problems of crowding and over-use of scenic roadways.</p> <p>This study developed as an attempt to bridge the gap between recently developed carrying capacity models in recreation resource management and planning and the specific problems o

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Ren, Liang. "Development and Validation of New Capacity Models for Roundabouts." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/367372.

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There is increased interest in building modern roundabouts in Europe, Australia and North America because of the safety and operational benefits that can be realized from this type of intersection. With this interest comes the increasing need to be able to estimate the capacity, evaluate the performance and analyze the emission levels that a roundabout will be likely to provide once it is built. In the early 2000s, a National Cooperative Highway Research Program (NCHRP) study was conducted that, among other tasks, developed single-lane roundabout capacity estimation equations. These equations,

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Al-Mojel, A. H. S. "The effect of geometric design on the capacity of isolated highway traffic signal approaches." Thesis, University of Bradford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378110.

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18

Yu, Bin. "Modeling Truck Motion along Grade Sections." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/26276.

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Roadway grades have a diverse effect on vehicle speeds, depending on vehicle and roadway characteristics. For example, passenger cars can generally negotiate grades of 5 percent or less without considerable reductions in vehicle speeds, while heavy-duty trucks are affected significantly by grades because of their inferior operating capability. Consequently, due to the potential significant speed differential between automobiles and heavy-duty trucks, these trucks can have a significant impact on the quality of flow, throughput, and safety of a traffic stream. Truck climbing lanes are typically

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Ingle, Anthony. "Development of Passenger Car Equivalents for Basic Freeway Segments." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/33951.

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Passenger car equivalents (PCEs) are used in highway capacity analysis to convert a mixed vehicle flow into an equivalent passenger car flow. This calculation is relevant to capacity and level of service determination, lane requirements, and determining the effect of traffic on highway operations. The most recent Highway Capacity Manual 2000 reports PCEs for basic freeway segments according to percent and length of grade and proportion of heavy vehicles. Heavy vehicles are considered to be either of two categories: trucks and buses or RVs. For trucks and buses, PCEs are reported for a typical

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Paula, Francisco Suliano Mesquita. "Proposta de adaptação da metodologia do highway capacity manual 2000 para análise de vias arteriais urbanas em Fortaleza." reponame:Repositório Institucional da UFC, 2006. http://www.repositorio.ufc.br/handle/riufc/4876.

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PAULA, F. S. M. Proposta de adaptação da metodologia do highway capacity manual 2000 para análise de vias arteriais urbanas em Fortaleza. 2006. 158 f. Dissertação (Mestrado em Engenharia de Transportes) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2006.<br>Submitted by Zacarias Barbosa Matias Junior (zaca@det.ufc.br) on 2013-05-21T19:34:56Z No. of bitstreams: 1 2006_dis_fsmpaula.pdf: 3768647 bytes, checksum: b7469c301d167688db28b89bfc50b40c (MD5)<br>Approved for entry into archive by Marlene Sousa(mmarlene@ufc.br) on 2013-05-27T16:13:34Z (GMT) No. of bitstreams: 1 2006_di

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Hashim, Elaff, and Jonathan Jönsson. "Busshållplatsers kapacitet : Utvärdering av tillämpbarhet av modell från Highway Capacity Manual 2000 med uinderlag från busstrafik i Stockholms innerstad." Thesis, KTH, Transportplanering, ekonomi och teknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170542.

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Stockholm is growing with almost two fully loaded SL-buses a day. One of the consequences that derive from this is the increase of public transport travelers who put the regionally governed public transport up to the test in terms of its capacity. The Transport administration in Stockholm County initiated 2015 a project with the purpose of simplifying the calculation of bus stop capacities. A hypothesis (set up by the Transport administration) based on that a model for calculation of bus stop capacities could be calibrated for Stockholm conditions is being researched in this bachelor’s essay.

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Alkaim, Al-Akhdar. "Effect of vehicle type on highway traffic flow : effects of vehicle type on speed, delay and capacity characteristics of highway traffic flow in the United Kingdom and Saudi Arabia determined by an examination of traffic data." Thesis, University of Bradford, 1987. http://hdl.handle.net/10454/3739.

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The thesis considers the effects of vehicle type on highway traffic control. The effects of vehicle type on the capacity of traffic signal approaches are examined by the experimental determination of passenger car units at intersections in London and West Yorkshire and in addition saturation flows and lost times are examined. Vehicle type effect at roundabout entries are investigated and the results of field observations reported. Details are given of the gap acceptance of varying vehicle types, the effect of vehicle type on delay and comparisons are made with existing recommendations for the

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Werkenthin, Moritz [Verfasser], Björn [Akademischer Betreuer] Kluge, Gerd [Akademischer Betreuer] Wessolek, and Patricia [Akademischer Betreuer] Göbel. "Assessment of metal contamination and retention capacity of highway embankment soils / Moritz Werkenthin. Gutachter: Gerd Wessolek ; Patricia Göbel. Betreuer: Björn Kluge ; Gerd Wessolek." Berlin : Technische Universität Berlin, 2015. http://d-nb.info/1072146452/34.

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Johnston, Nathan R. "Development of a Bicycle Level of Service Methodology for Two-Way Stop-Controlled (TWSC) Intersections." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1168.

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This thesis fills a missing piece in research on multimodal performance measures for traffic on streets and highways. The Highway Capacity Manual (HCM) published by the Transportation Research Board (TRB) provides Level of Service (LOS) methodologies which enable engineers and planners to evaluate the overall performance of roadways and highways based on the physical characteristics of facilities. This allows for the evaluation of those facilities and offers a means for recognizing issues and planning, designing, implementing, and ultimately assessing improvements. Originally, level of service

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Osra, Khalid A. "Traffic characteristics on the Jeddah-Makkah freeway, Saudi Arabia." Ohio : Ohio University, 2002. http://www.ohiolink.edu/etd/view.cgi?ohiou1174931451.

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Blogg, Miranda Louise. "Queues and delays at traffic elements with variable demand." Thesis, Queensland University of Technology, 2000.

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Crescentini, Ilaria. "Ottimizzazione della fasatura e dispositivi di controllo automatico del rispetto del rosso semaforico: analisi di un'intersezione isolata nel Comune di Casalecchio di Reno." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amslaurea.unibo.it/82/.

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Rickardsson, Johan. "A Study of Traffic Capacity with Regards to Heavy vehicle Share and Level of Service through Microsimulation." Thesis, KTH, Transportplanering, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302528.

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The 2+1-road is a specific three lane road which aims to increase the safety of the predecessor 13 meter wide four lane roads. As a lane is removed and a weaving section is introduced the capacity is severely lowered, sometimes halved. A very demanding part of the traffic system with regards to capacity are heavy vehicles, especially in conjunction with the 2+1-roads. However, exactly how the share of heavy vehicles impacts the traffic system with regards to 2+1 roads and freeways is not previously studied, which grants the opportunity of this work. The work has been carried out in connection

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Sullivan, Daniel P. "Vehicle headway and lane flow distributions on multi-lane arterial roads." Thesis, Queensland University of Technology, 2001.

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Strömgren, Per. "Modelling of Traffic Performance for Swedish Roads and Motorways." Doctoral thesis, KTH, Transportplanering, ekonomi och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-185930.

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This thesis consists of five scientific articles oriented towards capacity. Managing capacity constraints with associated delays is a big issue at new design as well as at trimming existing traffic facilities. In larger Swedish cities these challenges have become more and more important as a result of growing traffic demand due to rapid population increase.Models for estimating capacity and delay are available, but not many are calibrated for Swedish conditions due to the high effort required. This thesis documents development and calibration of new models for motorway links, entry and exit la

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Kopřiva, Jan. "Návrh mostu na dálnici D1 (Jánovce - Jabloňov)." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227605.

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The purpose of this thesis is to design bridge over the valley on D1 highway. Length of the structure is 170 meters. Main structure is four spans prestressed beam. The length of fields is 36+48+48+36 meters. The structure is examined in all phases of construction, including the operating phase according to valid standards.

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Dias, José Maria. "INVESTIGAÇÃO DAS PRÁTICAS DE LOGÍSTICA URBANA EM CIDADES BRASILEIRAS." Universidade Federal de São Carlos, 2017. https://repositorio.ufscar.br/handle/ufscar/9224.

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Submitted by José Dias (jmdiassor@gmail.com) on 2017-12-06T15:37:50Z No. of bitstreams: 2 Dissertação JMDias UFSCar_So v.final.pdf: 1930492 bytes, checksum: cf7a9d0a9b17e5ea00075d652b21d2ce (MD5) Carta comprovante.pdf: 330278 bytes, checksum: 7ec98b5d36367e44412de8af04a35377 (MD5)<br>Approved for entry into archive by Milena Rubi ( ri.bso@ufscar.br) on 2017-12-07T12:03:28Z (GMT) No. of bitstreams: 2 Dissertação JMDias UFSCar_So v.final.pdf: 1930492 bytes, checksum: cf7a9d0a9b17e5ea00075d652b21d2ce (MD5) Carta comprovante.pdf: 330278 bytes, checksum: 7ec98b5d36367e44412de8af04a35377 (MD5)<

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Ross, Michael C. M. B. A. Sloan School of Management. "Reducing variations in a highly constrained environment in order to increase production capacity." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/126988.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, in conjunction with the Leaders for Global Operations Program at MIT, May, 2020<br>Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, in conjunction with the Leaders for Global Operations Program at MIT, May, 2020<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 89-90).<br>Variations and the negatives effects it causes on production capacity and planning are topics of significant interest in the manufacturing communities. This research

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Andrade, Gustavo Riente de. "Capacidade e relação fluxo-velocidade em autoestradas e rodovias de pista dupla paulistas." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/18/18144/tde-21062012-103018/.

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Neste trabalho, calibra-se um modelo que descreva a relação fluxo-velocidade em autoestradas e rodovias de pista dupla, considerando as recomendações tecidas pelos autores envolvidos na elaboração do modelo do Highway Capacity Manual - HCM 2010. Para tanto, foi utilizada uma amostra de 788.122 observações, coletadas por 25 estações em quatro rodovias paulistas: SP-348, SP-021, SP-280 e SP 270. A análise dos dados mostrou que, conforme preconizado pelo HCM 2010, existe um intervalo de fluxos no qual a velocidade se mantém constante, o que corresponde à velocidade

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Masters, Paula, Megan Quinn, G. Galfano, and Samuel Pettyjohn. "Highly Infectious Disease Training for Law Enforcement/First Responders: Collaboration to Strengthen Preparedness Capacity." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/6799.

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Krone, Stefan, and Gerhard Fettweis. "Capacity of Communications Channels with 1-Bit Quantization and Oversampling at the Receiver." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-101462.

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Communications receivers that rely on 1-bit analogto-digital conversion are advantageous in terms of hardware complexity and power dissipation. Performance limitations due to the 1-bit quantization can be tackled with oversampling. This paper considers the oversampling gain from an information-theoretic perspective by analyzing the channel capacity with 1-bit quantization and oversampling at the receiver for the particular case of AWGN channels. This includes a numerical computation of the capacity and optimal transmit symbol constellations, as well as the derivation of closed-form expressions

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Demarchi, Sergio Henrique. "Influência dos veículos pesados na capacidade e nível de serviço de rodovias de pista dupla." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/18/18137/tde-07032018-112201/.

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O objetivo desta tese de doutorado é avaliar o impacto de caminhões na capacidade e nível de serviço de rodovias de pista dupla, a partir de fatores de equivalência veicular. São determinados equivalentes para diversas combinações de comprimentos e magnitudes de greides, volumes de tráfego e porcentagens de caminhões. Os equivalentes são calculados supondo que um fluxo formado só por automóveis é equivalente a um fluxo composto por automóveis e caminhões quando ambos possuem a mesma densidade. A partir de observações de campo, supõe-se que o fluxo de caminhões seja formado por proporções fixas

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Krone, Stefan, and Gerhard Fettweis. "Capacity of Communications Channels with 1-Bit Quantization and Oversampling at the Receiver." Technische Universität Dresden, 2012. https://tud.qucosa.de/id/qucosa%3A26361.

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Communications receivers that rely on 1-bit analogto-digital conversion are advantageous in terms of hardware complexity and power dissipation. Performance limitations due to the 1-bit quantization can be tackled with oversampling. This paper considers the oversampling gain from an information-theoretic perspective by analyzing the channel capacity with 1-bit quantization and oversampling at the receiver for the particular case of AWGN channels. This includes a numerical computation of the capacity and optimal transmit symbol constellations, as well as the derivation of closed-form expressions

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Morrison, Michele. "Confidence and competence? : the capacity of New Zealand boards of trustees to appoint highly effective school principals /." The University of Waikato, 2006. http://hdl.handle.net/10289/2395.

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Academics and lay persons alike freely acknowledge that principals exert enormous influence over the creation, maintenance and enhancement of the learning environment in schools. They recognise that a turbulent educational world presents principals with multiple challenges in sustaining the conditions necessary for student achievement, and that some principals are more successful in this endeavour than others. This small-scale qualitative study uses a semi-structured interview process to gather data from five Chairpersons of Boards of Trustees who have appointed a principal within the precedin

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Luo, Dexin. "Design of highly distributed biofuel production systems." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45878.

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This thesis develops quantitative methods for evaluation and design of large-scale biofuel production systems with a particular focus on bioreactor-based fuel systems. In Chapter 2, a lifecycle assessment (LCA) method is integrated with chemical process modeling to select from different process designs the one that maximizes the energy efficiency and minimizes the environmental impact of a production system. An algae-based ethanol production technology, which is in the process of commercialization, is used as a case study. Motivated by this case study, Chapter 3 studies the selection of proces

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Oliveira, Gabriel Jurado Martins de. "Calibração da relação fluxo-velocidade para autoestradas e rodovias de pista dupla." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18144/tde-10092018-150848/.

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Esta pesquisa apresenta um método de calibração da relação fluxo-velocidade do Highway Capacity Manual, HCM, para autoestradas e rodovias de pista dupla, a partir de recomendações tecidas pelos autores envolvidos na elaboração do manual. Para tanto, foi utilizado uma amostra com mais de 1.700.000 observações, coletadas por 34 sensores de tráfego, localizados em quatros rodovias do Estado de São Paulo: SP-280, SP-348, SP-270 e SP-021. O tratamento do banco de dados foi realizado por meio da filtragem dos dados originais através da aplicação de três critérios, que têm como finalidade remover obs

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Curuk, Selva Muratoglu. "Highly Efficient New Methods Of Channel Estimation For Ofdm Systems." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609290/index.pdf.

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In the first part, the topic of average channel capacity for Orthogonal Frequency Division Multiplexing (OFDM) under Rayleigh, Rician, Nakagami-m, Hoyt, Weibull and Lognormal fading is addressed. With the assumption that channel state information is known, we deal with a lower bound for the capacity and find closed computable forms for Rician fading without diversity and with Maximum Ratio Combining diversity at the receiver. Approximate expressions are also provided for the capacity lower bound in the case of high Signal to Noise Ratio. This thesis presents two simplified Maximum A Posteriori

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Godongwana, Ziboneni Governor. "Highly selective mesoporous sorbents for mercury removal from industrial wastewater." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8398_1320306023.

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The results of this study show that novel mesoporous carbons were obtained as inverse replica of SBA-15, HMS and MCM-41 silica templates, with a large pore diameter (2-4 nm), a BET surface area of 1867, 874 and 910 m2g â1 respectively for CA_SBA-15_LPG_105, CA_HMS_LPG_80 and CA_MCM- 41_LPG_80 with bimodal pore size distribution (PSD) in the mesopores range. The results obtained show that mesoporous carbon with graphitic structures can be synthesized via the LPG route.

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Campos, Murilo de. "Grau de saturação de fósforo em solos tropicais altamente intemperizados." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-16092014-090245/.

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O fósforo (P) é um elemento essencial para o desenvolvimento das plantas e precisa ser suprido em quantidades adequadas para obtenção de altas produtividades das culturas agrícolas. O conteúdo de P no solo e consequente perda deste para as águas superficiais são importantes fatores relacionados a eutrofização de ambientes aquáticos. Nesse trabalho foi obtido o Grau de saturação de P (GSP) em 29 solos tropicais altamente intemperizados e seus valores foram correlacionados com atributos químicos, físicos e mineralógicos dos solos. Antes de calcular o GSP, foram determinados parâmetros como Índic

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Rudjanakanoknad, Jittichai. "Increasing freeway merge capacity through on-ramp metering." 2005. http://repositories.cdlib.org/its/ds/ds2005rudjana/.

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Thesis (Ph. D. in Engineering)--University of California, Berkeley, 2005.<br>Includes bibliographical references (p. 64-66). Also available online via the University of California web site (http://repositories.cdlib.org/escholarship/).

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Hicks, Carolyn. "Measuring Highway Work Zone Throughput." Thesis, 2009. http://hdl.handle.net/1807/17515.

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The focus of this project is highway construction zones and the impact of lane closures on traffic. By measuring throughput (the number of vehicles that can flow through a work zone in a given amount of time), analysis was performed to determine the factors that affect this value. Successful data collection uncovered a paradox. Often work zones would see no queuing, indicating the lane could have been closed for longer hours. Alternatively sites with forced flow allowed fewer vehicles through the site than expected, indicating that the design value is too high, requiring shorter lane closure h

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Yin, Ting-Chi, and 殷鼎棋. "Estimation and Analysis on Highway Capacity in Long Tunnel." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/40277578161797793840.

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Mills, Alison Fayre. "Entry-lane capacity analysis of roundabouts in Texas using VISSIM, SIDRA, and the highway capacity manual." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-08-4074.

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Road safety and traffic congestion are two of the critical issues facing the transportation profession today. As a means to promote safety and efficiency at United States intersections modern roundabouts are becoming more and more common. Over the last ten years, roundabouts implementation methodologies have been developed using data collected at U.S. roundabouts. These methodologies were first published in National Cooperative Highway Report 572: Roundabouts in the United States and more recently in the second edition of the national roundabout guidelines. This work attempts to validate the

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Zhu, Kangyuan Ping W. V. "Traffic capacity and speed analyses of freeway work zones based on computer simulation." 2004. http://etd.lib.fsu.edu/theses/available/etd-05242004-195534.

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Thesis (M.S.)--Florida State University, 2004.<br>Advisor: Dr. W. Virgil Ping, Florida State University, College of Engineering, Dept. of Civil and Environmental Engineering. Title and description from dissertation home page (viewed Oct. 06, 2004). Includes bibliographical references.

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Hsuen, Lai I., and 賴以軒. "Headway Policy and Capacity Assessment of on an Automated Highway System - ADVANCE-F." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/34722594739386234062.

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碩士<br>淡江大學<br>土木工程研究所<br>82<br>In order to study the benifit of the Advanced Drive Vehicles /Automatic Navigation & Control Enroute System-Freeway( ADVANCE-F) and its feasibi- lity in traffic control,it is necessary to develop a comprehensive understandings of capacity and suitable headway of the system. With overcrowded traffic scarious land, in Taiwan nowadays the tra- ditional traffic control approaches are insuffici- ent to our needs. On the purpose of using energe and land ef

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