Provides insight into which factors influence public transportation problems via extensive complexity analysis
Contains a new model for customer-oriented public transportation problems, resulting in more objective solutions
Provides a framework in which methods for optimization and routing can be combined to solve network problems with integrated routing
Presents exact integer programming approaches as well as a heuristic approach which alternates traffic assignment and optimization steps
This book treats three planning problems arising in public railway transportation planning: line planning, timetabling, and delay management, with the objective to minimize passengers’ travel time. While many optimization approaches simplify these problems by assuming that passengers’ route choice is independent of the solution, this book focuses on models which take into account that passengers will adapt their travel route to the implemented planning solution. That is, a planning solution and passengers’ routes are determined and evaluated simultaneously.
This work is technically deep, with insightful findings regarding complexity and algorithmic approaches to public transportation problems with integrated passenger routing. It is intended for researchers in the fields of mathematics, computer science, or operations research, working in the field of public transportation from an optimization standpoint. It is also ideal for students who want to gain intuition and experience in doing complexity proofs and designing polynomial-time algorithms for network problems.
The book models line planning, timetabling, and delay management as combined design and routing problems on networks. In a complexity analysis, the border between NP-hard and polynomially solvable problems is illustrated. Based on that, the insights gained are used to develop solution approaches for the considered problems. Besides integer programming formulations, a heuristic method iterating planning and routing steps is proposed to solve the problems.
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Author: Occupational Safety and Health Administration | Size: 1 MB | Format:PDF | Quality:Unspecified | Publisher: U.S. Department of Labor | Year: 2009 | pages: 72 | ISBN: 978-1-61344-196-1
Effective management of employee safety and health protection is a decisive factor in reducing the extent and severity of work-related injuries and illnesses and their related costs. In fact, an effective safety and health management system forms the basis of good employee protection that can save time and money, increase productivity and reduce employee injuries, illnesses and related workers’ compensation costs. To assist employers and employees in developing effective safety and health management systems, this 2009 guidance document addresses the control of employee exposures to respirable dust containing crystalline silica, which is known to cause silicosis, a serious lung disease, as well as increase the risk of lung cancer and other systemic diseases. This document provides information on the effectiveness of various engineering control approaches for several kinds of construction operations and equipment, and contains recommendations for work practices and respiratory protection, as appropriate.
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Design of Coastal Revetments, Seawalls, and Bulkheads - Engineering and Design
Size: 2 MB | Format:PDF | Quality:Unspecified | Publisher: U.S. Army Corps of Engineers | Year: 1995 | pages: 110
In areas subject to wind-driven waves and surge, this 1995 manual provides guidance for the design of structures such as revetments, seawalls, and bulkheads, commonly employed either to combat erosion or to maintain development at an advanced position from the natural shoreline. Proper performance of such structures is predicated on close adherence to established design guidance. This manual presents important design considerations and describes commonly available materials and structural components.
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Blasting Vibrations and Their Effects on Structures
Author: Nicholls, Harry R., Johnson, Charles F., Duvall, Wilbur I. | Size: 3 MB | Format:PDF | Quality:Unspecified | Publisher: UNT Libraries Government Documents Department | Year: 1971 | pages: 110
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This report is a domestic scan focusing on practices among U.S. transportation departments (DOT) for identification, prioritization, and execution of programs for management of highway bridges. The scan includes reviews of DOT manuals, guidelines, and policy statements; a collection of responses to amplifying questions from DOTs; and travel to seven sites for meetings with DOT staff. The most detailed information was collected from 13 DOTs that participated in meetings with the scan team. Document review includes input from 11 other DOTs. All sources are state or local government agencies of the United States. The scan team observed that certain practices in current use in bridge maintenance are effective in improving overall bridge conditions. These key observations/findings are divided into three main categories: the bridge management process, preventive maintenance, and agency support. The first of these categories, the bridge management process, further touches upon four elements of an effective process: identification of maintenance needs, performance measures, prioritization, and verification. State departments of transportation were either visited, or information was obtained from them via questionnaires.
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Common Airport Pavement Maintenance Practices - A Synthesis of Airport Practice
Author: Hajek, Jerry; Hall, Jim W.; Hein, David K. | Size: 4 MB | Format:PDF | Quality:Unspecified | Publisher: Transportation Research Board | Year: 2011 | pages: 112 | ISBN: 978-0-309-14334-9
This synthesis study is intended to inform airport pavement engineers and airport maintenance managers and personnel about how airports implement a pavement maintenance management program, including inspection and tracking pavement condition, scheduling maintenance, identifying necessary funds, and treating distresses in asphalt and concrete pavements. Information used in this study was acquired through a review of the literature and interviews with airport operators and industry experts.
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Posted by: tolin - 04-25-2014, 04:31 AM - Forum: Archive
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Article/eBook Full Name: Temporary Works: Principles of Design and Construction
Author(s): Murray Grant and Peter Pallett
Edition: N/A
Publish Date: 7 Mar 2012
ISBN: 0727741772 & 978-0727741776
Published By: ICE Publishing
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Author: C. V. R. Murty Rupen Goswami A. R. Vijayanarayanan Vipul V. Mehta | Size: 4.6 MB | Format:PDF | Quality:Unspecified | Publisher: Gujarat State Disaster Management Authority Government of Gujarat | pages: 268
This book explains concepts in behaviour of buildings during earthquakes. The book dwells on basic concepts in earthquake resistant design of buildings, first describes these at a conceptual level and then articulates further with numerical examples. It is an attempt to respond to some of the frequently asked questions by Architects and Structural Engineers regarding behaviour of Reinforced Concrete (RC) and Steel buildings under the action of lateral loads, especially during earthquakes. Since most buildings built in India are made of RC, the dominant set of examples used
is of RC buildings. But, with no loss of generality, the broad concepts discussed in this document are valid for both RC and Steel buildings. Also, the discussion is limited to normal buildings without any special devices, like base isolation and other energy absorbing or dissipating devices. Also, specialised systems (like post-tensioning slab systems and nuclear power plants) are not in focus. This book employs exaggerated deformation shapes to emphasise deformations, and thereby, to develop the most needed intuition of structural behaviour of buildings during earthquakes and its consequences on earthquake-resistant design. The book contains animations related to behaviour of the various buildings models used in this work. Those readers seeing the electronic copy of this book should make special note of those pages titled Animation Set ..., to capture the hyperlinks and reach the said animations. The target audience of the book is practicing seismic structural engineers and architects, in addition to students and teachers of engineering and architecture colleges striving to understand seismic behaviour, analysis and design of buildings.
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Dear Forum member, need your help to share following paper:
Rasmus Müller, Stefan Larsson, Johan Spross. Extended multivariate approach for uncertainty reduction in the assessment of undrained shear strength in clays. Canadian Geotechnical Journal, 2014, Vol. 51, No. 3 : pp. 231-245. (doi: 10.1139/cgj-2012-0176)
Article/eBook Full Name: Primer on Seismic Isolation
Author(s): Andrew W. Taylor and Takeru Igusa
Publish Date: 2004
ISBN: 9780784475584
Published By: ASCE
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