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Author: Ade Ogunsola
Publisher: Springer Science & Business Media
ISBN: 3642302815
Category : Technology & Engineering
Languages : en
Pages : 545
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Book Description
A railway is a complex distributed engineering system: the construction of a new railway or the modernisation of a existing one requires a deep understanding of the constitutive components and their interaction, inside the system itself and towards the outside world. The former covers the various subsystems (featuring a complex mix of high power sources, sensitive safety critical systems, intentional transmitters, etc.) and their interaction, including the specific functions and their relevance to safety. The latter represents all the additional possible external victims and sources of electromagnetic interaction. EMC thus starts from a comprehension of the emissions and immunity characteristics and the interactions between sources and victims, with a strong relationship to electromagnetics and to system modeling. On the other hand, the said functions are achieved and preserved and their relevance for safety is adequately handled, if the related requirements are well posed and managed throughout the process from the beginning. The link is represented by standards and their correct application, as a support to analysis, testing and demonstration.
Author: Ade Ogunsola
Publisher: Springer Science & Business Media
ISBN: 3642302815
Category : Technology & Engineering
Languages : en
Pages : 545
Get Book Here
Book Description
A railway is a complex distributed engineering system: the construction of a new railway or the modernisation of a existing one requires a deep understanding of the constitutive components and their interaction, inside the system itself and towards the outside world. The former covers the various subsystems (featuring a complex mix of high power sources, sensitive safety critical systems, intentional transmitters, etc.) and their interaction, including the specific functions and their relevance to safety. The latter represents all the additional possible external victims and sources of electromagnetic interaction. EMC thus starts from a comprehension of the emissions and immunity characteristics and the interactions between sources and victims, with a strong relationship to electromagnetics and to system modeling. On the other hand, the said functions are achieved and preserved and their relevance for safety is adequately handled, if the related requirements are well posed and managed throughout the process from the beginning. The link is represented by standards and their correct application, as a support to analysis, testing and demonstration.
Author: Sirong Yi
Publisher: Academic Press
ISBN: 0128129344
Category : Technology & Engineering
Languages : en
Pages : 326
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Book Description
Dynamic Analysis of High-Speed Railway Alignment: Theory and Practice elaborates on the dynamic analysis theory and method on spatial alignment parameters of high-speed railways, revealing the interaction mechanism between vehicle-track dynamic performance and track parameters of high-speed railways. It ascertains the influence rules of track structure and track geometry on vehicle-track dynamic performance, establishes the relationship models between vehicle-track dynamic performance and curve dynamic characteristic parameters, and defines the calculation relationship between lateral acceleration of car body on curves and track parameters. This book can be used as a reference book for scientific researchers, engineering technicians and management engaged in railway engineering, and will be very helpful for railway technicians who want to learn more about route planning, design, and construction and maintenance technologies of high-speed railways. - Presents the dynamic effects between the running speed of high-speed trains on curves and spatial curve technical parameters - Provides dynamic analysis, theory and methods on curve parameters of high-speed railways and improves the calculation theory on spatial alignment of high-speed railways - Covers minimum curve radius, transition curve length, minimum radius of vertical curve, steepest slope, minimum slope length and length of intermediate straight line
Author: Bai Gao
Publisher: World Scientific
ISBN: 9811206767
Category : Technology & Engineering
Languages : en
Pages : 456
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Book Description
High-speed railway system is interdisciplinary subject that covers infrastructure, mobile equipment, traction power supply, communication signal, operation and maintenance, and transportation organization. The purpose of this book is to give readers a basic understanding of the technology behind of China's high-speed rail network.In this book, the author mainly focusses on the innovations of products and processes, especially product innovation, which involves the selection of technology route, technology system and technology source. Therefore, the innovation in HST here refers to the selection of technology route, technology system and technology source, as well as, the new products developed and manufactured according to the selection. With the in-depth study, the author would like to provide outlook for development in this area in the next stage.
Author: Management Association, Information Resources
Publisher: IGI Global
ISBN: 179989021X
Category : Computers
Languages : en
Pages : 1865
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Book Description
Social media has become an integral part of society as social networking has become a main form of communication and human interaction. To stay relevant, businesses have adopted social media tactics to interact with consumers, conduct business, and remain competitive. Social technologies have reached a vital point in the business world, being essential in strategic decision-making processes, building relationships with consumers, marketing and branding efforts, and other important areas. While social media continues to gain importance in modern society, it is essential to determine how it functions in contemporary business. The Research Anthology on Strategies for Using Social Media as a Service and Tool in Business provides updated information on how businesses are strategically using social media and explores the role of social media in keeping businesses competitive in the global economy. The chapters will discuss how social tools work, what services businesses are utilizing, both the benefits and challenges to how social media is changing the modern business atmosphere, and more. This book is essential for researchers, instructors, social media managers, business managers, students, executives, practitioners, industry professionals, social media analysts, and all audiences interested in how social media is being used in modern businesses as both a service and integral tool.
Author:
Publisher: Fundacion BBVA
ISBN: 8492937327
Category :
Languages : es
Pages : 136
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Book Description
Este informe pretende contribuir al análisis económico de los proyectos de inversión en alta velocidad ferroviaria. La evaluación económica de proyectos puede ayudar a los gobiernos a formarse una idea más precisa sobre los beneficios esperados de distintas líneas de actuación que absorben dinero público para resolver un mismo problema de transporte. En este informe se trata de determinar las circunstancias en las que la inversión en alta velocidad es socialmente deseable y en que otras la sociedad gana posponiendo la inversión. La red de alta velocidad puede construirse gradualmente, añadiendo nuevas líneas una vez que la evaluación económica muestra una rentabilidad social positiva.
Author: Andrea Mariscotti
Publisher: ASTM Analysis, Simulation, Test and Measurement
ISBN: 9788894109115
Category : Business & Economics
Languages : en
Pages : 312
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Book Description
Railway and metro systems embed modern technologies and interface with external systems, outside world and humans. This book focuses on electromagnetic field coupling and its experimental assessment. Electromagnetics, transmission lines, antennas, the spectrum analyzer, time-frequency transforms, probability, statistics and uncertainty are the background. Six chapters follow that discuss standards, scientific literature, measurement methods, procedures. Emissions of rolling stock, line and substation using 2006 and 2015 versions of EN 50121 are considered, discussing infrastructure influence, variability and synchronization with train operation, consistency. RF emissions of current collection system and impact to radio communications are evaluated by means of joint time-frequency transforms, APD and BER. Low-frequency magnetic field is a possible threat to susceptible medical and scientific equipment. For human exposure of personnel and passengers the presence of large power equipment, the relatively short distance and the time-varying nature of sources shall be taken into account with suitable evaluation methods against EN 50550 and ICNIRP limits. The aim is supporting EMC and test engineers, R&D and academic staff in their activities, while planning and preparing on-site tests in modern electrified transportation systems, bridging analysis and simulation. Examples and practical considerations are the result of many years of experience of EMC testing in railways.
Author: South Africa. Board of Trade and Industries
Publisher:
ISBN:
Category : Railroads
Languages : en
Pages : 88
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Book Description
Author: Luís Borda-de-Água
Publisher: Springer
ISBN: 3319574965
Category : Nature
Languages : en
Pages : 336
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Book Description
This book is open access under a CC BY 4.0 license. This book provides a unique overview of the impacts of railways on biodiversity, integrating the existing knowledge on the ecological effects of railways on wildlife, identifying major knowledge gaps and research directions and presenting the emerging field of railway ecology. The book is divided into two major parts: Part one offers a general review of the major conceptual and theoretical principles of railway ecology. The chapters consider the impacts of railways on wildlife populations and concentrate on four major topics: mortality, barrier effects, species invasions and disturbances (ranging from noise to chemical pollution). Part two focuses on a number of case studies from Europe, Asia and North America written by an international group of experts.
Author:
Publisher:
ISBN:
Category : Railroads
Languages : en
Pages : 996
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Book Description
Author: Elisabeth Köll
Publisher: Harvard University Press
ISBN: 0674916425
Category : History
Languages : en
Pages : 417
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Book Description
As a vehicle to convey both the history of modern China and the complex forces still driving the nation’s economic success, rail has no equal. Railroads and the Transformation of China is the first comprehensive history, in any language, of railroad operation from the last decades of the Qing Empire to the present. China’s first fractured lines were built under semicolonial conditions by competing foreign investors. The national system that began taking shape in the 1910s suffered all the ills of the country at large: warlordism and Japanese invasion, Chinese partisan sabotage, the Great Leap Forward when lines suffered in the “battle for steel,” and the Cultural Revolution, during which Red Guards were granted free passage to “make revolution” across the country, nearly collapsing the system. Elisabeth Köll’s expansive study shows how railroads survived the rupture of the 1949 Communist revolution and became an enduring model of Chinese infrastructure expansion. The railroads persisted because they were exemplary bureaucratic institutions. Through detailed archival research and interviews, Köll builds case studies illuminating the strength of rail administration. Pragmatic management, combining central authority and local autonomy, sustained rail organizations amid shifting political and economic priorities. As Köll shows, rail provided a blueprint for the past forty years of ambitious, semipublic business development and remains an essential component of the PRC’s politically charged, technocratic economic model for China’s future.
