This book describes the use of free air cooling to improve the efficiency of, and cooling of, equipment for use in telecom infrastructures. Discussed at length is the cooling of communication installation rooms such as data centers or base stations, and this is intended as a valuable tool for the people designing and manufacturing key parts of communication networks. This book provides an introduction to current cooling methods used for energy reduction, and also compares present cooling methods in use in the field. The qualification methods and standard reliability assessments are reviewed, and their inability to assess the risks of free air cooling is discussed. The method of identifying the risks associated with free air cooling on equipment performance and reliability is introduced. A novel method of assessment for free air cooling is also proposed that utilizes prognostics and health management (PHM). This book also: Describes how the implementation of free air cooling can save energy for cooling within the telecommunications infrastructure. Analyzes the potential risks and failures of mechanisms possible in the implementation of free air cooling, which benefits manufacturers and equipment designers. Presents prognostics-based assessments to identify and mitigate the risks of telecommunications equipment under free air cooling conditions, which can provide the early warning of equipment failures at operation stage without disturbing the data centers' service. Optimum Cooling for Data Centers is an ideal book for researchers and engineers interested in designing and manufacturing equipment for use in telecom infrastructures.

Cities are centres of exciting events, flows, movements and contradictions that produce both opportunities and challenges. Evolved through the centuries, they display layers of spatial, cultural and socio-economic diversity and contestations, which are articulated in multiple ways. It is in this backdrop that the present volume addresses some of the myriad issues visible in the contemporary cities of the Global South. The volume is divided into three parts, each of them focusing on different dimension of contemporary urban challenges. Part I entitled 'The Concept of a City' contains five papers dealing with conceptual complexities of the urban. This part analyses as to what extent development intrudes on urban space and space in turn influences development. Part II 'City and Urban Space' contains six papers. These focus on the existing patterns, processes, and perspectives of urbanization and its consequent everyday manifestations across different cities. Part III 'Urban Policy, Planning and Governance' has six papers dealing with policy and planning. In the wake of rapid urbanization and economic growth, the urban sector is swiftly changing towards being economic engines. Cities and towns being the centres of economic activities play a catalytic role in contributing to economic development and poverty reduction. However, there are layers of challenges that these cities face. This timely volume brings out these challenges and also analyses plausible solutions which can be brought about by the efficient and effective provision of essential urban services and infrastructure. Please note: This title is co-published with Manohar Publishers, New Delhi. Taylor & Francis does not sell or distribute the Hardback in India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka.