This book contributes to making urban rail transport fast, punctual and energy-efficient –significant factors in the importance of public transportation systems to economic, environmental and social requirements at both municipal and national levels. It proposes new methods for shortening passenger travel times and for reducing energy consumption, addressing two major topics: (1) train trajectory planning: the authors derive a nonlinear model for the operation of trains and present several approaches for calculating optimal and energy-efficient trajectories within a given schedule; and (2) train scheduling: the authors develop a train scheduling model for urban rail systems and optimization approaches with which to balance total passenger travel time with energy efficiency and other costs to the operator. Mixed-integer linear programming and pseudospectral methods are among the new methods proposed for single- and multi-train systems for the solution of the nonlinear trajectory planning problem which involves constraints such as varying speed restrictions and maximum traction/braking force. Signaling systems and their effects are also accounted for in the trajectory planning model. Origin–destination passenger demand is included in the model formulation for train scheduling. Iterative convex programming and efficient bi-level approaches are utilized in the solution of the train-scheduling problem. In addition, the splitting rates and route choices of passengers are also optimized from the system point of view. The problems and solutions described in Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems will interest researchers studying public transport systems and logistics whether from an academic or practitioner background as well as providing a real application for anybody studying optimization theory and predictive control.
Identification of Multivariable Industrial Processes presents a unified approach to multivariable industrial process identification. It concentrates on industrial processes with reference to model applications. The areas covered are experiment design, model structure selection, parameter estimation as well as error bounds of the transfer function. This publication is intended to fill the gap between modern systems and control theory and industrial application. It is based on the results of 10 years of research and application experiences. The theories and models discussed are fully explained and illustrated with case studies. At an early stage the reader is introduced to real applications.
The underlying idea and motive for the book is that the notion of complexity may humanize the social sciences, may conceive the complex human being as more human, and turn reality as assumed in our doing social science into a more complex, that is a richer reality for all. The main focus of this book is on new thinking in complexity, with complexity to be taken as derived from the Latin word complexus: ‘that which is interwoven.’ The trans-disciplinary approach advocated here will be trans-disciplinary in two ways: firstly, by going beyond the separate disciplines within the fields of both natural sciences and social sciences, and, secondly, by going beyond the separate cultures of the natural sciences and of the social sciences and humanities.
This volume presents a short review study of the potential relationships between cognitive neuroscience and educational science. Conducted by order of the Dutch Programme Council for Educational Research of the Netherlands Organization for Scienti c Research (NWO; cf. the American NSF), the review aims to identify: (1) how educational principles, mechanisms, and theories could be extended or re ned based on ndings from cognitive neuroscience, and (2) which neuroscience prin- ples, mechanisms, or theories may have implications for educational research and could lead to new interdisciplinary research ventures. The contents should be seen as the outcome of the ‘Explorations in Learning and the Brain’ project. In this project, we started with a ‘quick scan’ of the lite- ture that formed the input for an expert workshop that was held in Amsterdam on March 10–11,2008. This expert workshopidenti ed additional relevant themesand issues that helped us to update the ‘quick scan’ into this nal document. In this way the input from the participants of the expert workshop (listed in Appendix A) has greatly in uenced the present text. We are therefore grateful to the participants for their scholarly and enthusiastic contributions. The content of the current volume, however, is the full responsibility of the authors.
This book endeavours to take the conceptualisation of the relationship between transnational remittance exchanges and gender to a new level. Thus, inevitably, it provides a number of case studies of relationships between gender and remittances from around the world, highlighting different processes and practises. Thereby the authors seek to understand the impact of remittances on gender and gender relations, both at the sending as well as at the receiving end. For each case study authors ask how remittances affect gender identities and relationships but also vice versa. By itself this already adds a wealth of insights to a field that is remarkably understudied despite a volume of studies on gender and the feminization of migration in developing contexts. Chapters take an open, explorative approach to the relationship between gender and remittance behaviour with the aid of case studies focusing on transnational flows between migrants and countries of origin. With the wide variety of cases this book is able to provide conceptual insights to better understand how remittances affect gender identity, roles and relations (at both the receiving and sending end) and give specific attention to the roles of various actors directly and indirectly involved in remittance sending in current collectively organized remittance schemes from around the world.
The crossing of national state borders is one of the most-discussed issues of contemporary times and it poses many challenges for individual and collective identities. This concerns both short-distance mobility as well as long-distance migration. Choosing to move - or not - across international borders is a complex decision, involving both cognitive and emotional processes. This book tests the approach that three crucial thresholds need to be crossed before mobility occurs; the individual’s mindset about migrating, the choice of destination and perception of crossing borders to that location and the specific routes and spatial trajectories available to get there. Thus both borders and trajectories can act as thresholds to spatial moves. The threshold approach, with its focus on processes affecting whether, when and where to move, aims to understand the decision-making process in all its dimensions, in the hope that this will lead to a better understanding of the ways migrants conceive, perceive and undertake their transnational journeys. This book examines the three constitutive parts discerned in the cross-border mobility decision-making process: people, borders and trajectories and their interrelationships. Illustrated by a global range of case studies, it demonstrates that the relation between the three is not fixed but flexible and that decision-making contains aspects of belonging, instability, security and volatility affecting their mobility or immobility.
Unsere Gegenwart scheint mehr und mehr Umbrüchen zu unterliegen. Eine Innovation folgt der nächsten, Traditionen gelten schnell als überholt, moderne Trends werden altmodisch. Dieser permanente Wandel verläuft in unserer Wahrnehmung immer rasanter. Auch bei einem Blick in die Vergangenheit scheinen Umbrüche, neue Ideen und Erfindungen zu überwiegen und in ständigen Wertverschiebungen zu resultieren. Aber was ist mit den beständigen Dingen? Nicht nur Veränderungen schaffen Werte, sondern auch Beständigkeit. Dabei stellt sich nicht nur die Frage, welche Werte durch Kontinuität entstehen, sondern auch welche Werte sie bedingen. Traditionen sind identitätsstiftend. Sie gehören zum kulturellen Gedächtnis, bilden oftmals eine Basis für Innovationen und haben dadurch eine eigene Bedeutung im Hinblick auf Veränderungen. Kontinuitäten zu erkennen, ist in einer Welt im stetigen Wandel ein schwieriges Unterfangen und auch im Rückblick nicht unproblematisch, vor allem wenn die Akteure selbst nicht mehr zu sprechen sind. Aber ein Blick auf die materielle Kultur erlaubt Aufschlüsse über Beständigkeit. Von Menschen gefertigte Objekte sind Traditionsträger, sie beherbergen die Ideen und Wertvorstellungen ihrer Gestalter und bleiben über Zeit und Raum hinweg erhalten. The Limits of Change umfasst Beiträge aus Archäologie, Philosophie und Ethnologie, die sich auf unterschiedliche Weise mit der Thematik der Kontinuität auseinandersetzen und den Sachverhalt kritisch beleuchten. So wird zum einen der Blick in die Vergangenheit gerichtet und auf Basis archäologischer Überlieferungen das Thema untersucht. Zum anderen liefert die Diskussion zeitgenössischer und globaler Sachverhalte wichtige Hinweise im Hinblick auf Kontinuität und Tradition.
This book contributes to making urban rail transport fast, punctual and energy-efficient –significant factors in the importance of public transportation systems to economic, environmental and social requirements at both municipal and national levels. It proposes new methods for shortening passenger travel times and for reducing energy consumption, addressing two major topics: (1) train trajectory planning: the authors derive a nonlinear model for the operation of trains and present several approaches for calculating optimal and energy-efficient trajectories within a given schedule; and (2) train scheduling: the authors develop a train scheduling model for urban rail systems and optimization approaches with which to balance total passenger travel time with energy efficiency and other costs to the operator. Mixed-integer linear programming and pseudospectral methods are among the new methods proposed for single- and multi-train systems for the solution of the nonlinear trajectory planning problem which involves constraints such as varying speed restrictions and maximum traction/braking force. Signaling systems and their effects are also accounted for in the trajectory planning model. Origin–destination passenger demand is included in the model formulation for train scheduling. Iterative convex programming and efficient bi-level approaches are utilized in the solution of the train-scheduling problem. In addition, the splitting rates and route choices of passengers are also optimized from the system point of view. The problems and solutions described in Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems will interest researchers studying public transport systems and logistics whether from an academic or practitioner background as well as providing a real application for anybody studying optimization theory and predictive control.
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