Algorithmics of Large and Complex Networks


Book Description

A state-of-the-art survey that reports on the progress made in selected areas of this important and growing field, aiding the analysis of existing networks and the design of new and more efficient algorithms for solving various problems on these networks.




The Route Towards Global Sustainability


Book Description

This volume discusses topics of global sustainability involving sustainability indicators, stakeholders' participation, and technological and strategic advances with the goal of "thinking locally to act globally". Scientists, academics, policymakers, and planners are currently focused on escalating global socioeconomic and ecological issues, such as rising inequality, adverse anthropogenic impacts on the environment, and deficiencies in natural resources. These variables are pushing the earth system's resistance capacity past its breaking point, with additional pressures incurred by a global pandemic. Therefore, this book looks to impart knowledge on participatory learning action research for human and environmental health and well-being. Sustainable development planning and management are needed in these pressing circumstances, and they necessitate an analytical interpretation of ongoing processes, current and future challenges, and an understanding of available tools and technologies. The main sections of the book focus on challenges and management practices for global sustainability, promoting educational values, smart initiatives in urban contexts, and integrating emerging sustainability dimensions in policies and legislation. The primary audience for the work is policy makers, urban planners, social scientists, economists, NGOs, and students, researchers, and educators engaged in environmental social science and sustainability management.







Geocomputation with R


Book Description

Geocomputation with R is for people who want to analyze, visualize and model geographic data with open source software. It is based on R, a statistical programming language that has powerful data processing, visualization, and geospatial capabilities. The book equips you with the knowledge and skills to tackle a wide range of issues manifested in geographic data, including those with scientific, societal, and environmental implications. This book will interest people from many backgrounds, especially Geographic Information Systems (GIS) users interested in applying their domain-specific knowledge in a powerful open source language for data science, and R users interested in extending their skills to handle spatial data. The book is divided into three parts: (I) Foundations, aimed at getting you up-to-speed with geographic data in R, (II) extensions, which covers advanced techniques, and (III) applications to real-world problems. The chapters cover progressively more advanced topics, with early chapters providing strong foundations on which the later chapters build. Part I describes the nature of spatial datasets in R and methods for manipulating them. It also covers geographic data import/export and transforming coordinate reference systems. Part II represents methods that build on these foundations. It covers advanced map making (including web mapping), "bridges" to GIS, sharing reproducible code, and how to do cross-validation in the presence of spatial autocorrelation. Part III applies the knowledge gained to tackle real-world problems, including representing and modeling transport systems, finding optimal locations for stores or services, and ecological modeling. Exercises at the end of each chapter give you the skills needed to tackle a range of geospatial problems. Solutions for each chapter and supplementary materials providing extended examples are available at https://geocompr.github.io/geocompkg/articles/.




Air Route Networks Through Complex Networks Theory


Book Description

Air Route Networks through Complex Networks Theory connects theory research with network connectivity analysis, providing practitioners with the tools they need to develop more efficient, resilient and profitable air route networks. The book helps airline route planners and executives create more robust route networks that are less vulnerable to disruptions, such as node isolation. The book further explores errors and attacks in complex networks, strategies for detecting critical nodes and cascading failure models to assess and maximize robustness. The book explains how to measure air route network connectivity with complex network representations. Air transport is among the most dynamic and toughest competition industries in today's global economy. The quality of air route network design is a key strategic factor in an airline's viability. These robust networks provide for more stable and secure carrier operations vs. those based simply on existing supply and demand volumes. Node-specific and network-specific representations are covered, along with in-depth coverage of connectivity in special and temporal networks. These collective tools serve as a guide for practitioners seeking to apply complex network theory to the airline industry. - Presents complex networks theory research results applied to airline transportation networks - Examines airline network robustness in the face of disruptions, providing strategies for detecting critical nodes of air transport networks - Provides historical perspective on the economic, political, technical, and geographical constraints that influence airline route portfolios - Connects data from valuable tools, such as navpoints, area control centers (ACC), and flight information centers, with air network modeling - Studies spreading-related phenomena, such as rumors, and disease contagions, and how these affect the airline industry




Fixed-route Transit Ridership Forecasting and Service Planning Methods


Book Description

TRB's Transit Cooperative Research Program (TCRP) Synthesis 66: Fixed-Route Transit Ridership Forecasting and Service Planning Methods examines the state of the practice in fixed-route transit ridership forecasting and service planning. The report also explores forecasting methodologies, resource requirements, data inputs, and organizational issues. In addition, the report analyzes the impacts of service changes and reviews transit agency assessments of the effectiveness and reliability of their methods and of desired improvements.













Addressing irregular migration through principled programmatic approaches: Examining the West Africa route and WFP operations


Book Description

This is a joint IFPRI-WFP study on the drivers, profile, and risks of irregular migration in the West Africa context. By taking a route-based approach to irregular migration in West Africa, the study examined migrants’ origins, their transit experience, and the situation where their journey stalls or ends. Drawing on a mixed methods approach the study includes case studies in Mali and Libya, representing an analysis of the migration route of the Ténéré desert crossing of the south-central Sahara. The overall analysis features the profiles of irregular migrants and the primary factors influencing their migration decisions. It also examines links between food insecurity and irregular migration to understand the risks and address the needs of this increasingly vulnerable population.