El collar de la paloma (Tauq al-hamamah), traducido en 1967 al castellano por el estudioso del Islam Emilio Garcia Gomez, es un tratado sobre el amor y los amantes de raiz neoplatonica que contiene una reflexion poetica y autobiografica, sobre las formas del amor profano y divino en la cultura musulmana. Escrita en una prosa elegante en que se insertan versos, esta obra influyo en las literaturas oriental y europea del Medioevo.

Mobile communication systems rely on radiofrequency waves to operate. Given the popularity and ubiquity of mobile communication devices as well as network densification, the level of Electromagnetic Field (EMF) exposure to the public is expected to rise significantly over the next few years. Although there is no clear evidence linking short-term exposure to EMF emission from wireless communication systems with adverse health effects, the International Agency for Research on Cancer (IARC) has concluded that EMF radiation is possibly carcinogenic. To cope with the concerns of the general public, the European Environmental Agency has recommended non-technical precautionary approaches to minimize exposure to EMF emissions. Rather than relying on these non-technical approaches, EMF, latency, network resilience and connection density, alongside traditional criteria such as spectral efficiency and energy efficiency are expected to take centre stage in the development of 5G systems. This book focuses on innovative EMF exposure research for future generations of mobile and wireless communications. This timely publication highlights the novel work done on reducing EMF emissions in future mobile communication systems and how to develop smart integrated technical solutions.

In today's modern world, the manufacturing industry is embracing an energy-efficient initiative and adopting green techniques. One aspect that has failed to adopt this scheme is flood grinding. Current flood grinding methods increase the treatment cost of grinding fluid and waste large quantities. In order to remain sustainable and efficient, in-depth research is necessary to study green grinding technologies that can ensure machining precision and surface quality of workpiece and reduce grinding fluid-induced environmental pollution. Enhanced Heat Transfer Mechanism of Nanofluid MQL Cooling Grinding: Emerging Research and Opportunities provides emerging research exploring the theoretical and practical aspects of nanofluid lubrication and its application within grinding flow and green manufacturing. Featuring coverage on a broad range of topics such as airflow distribution, morphology analysis, and lubrication performance, this book is ideally designed for mechanical professionals, engineers, manufacturers, researchers, scientists, academicians, and students seeking current research on clean and low-carbon precision machining methods.

The Holy Qur,an was the revealation given to Prophet Muhammad (P.B.U.H.) from Allah (God)by way of the Angel Gabriel (S.R.A.) approx. 1400 A.D.

Scholar, mystic and visionary, Ibn 'Alwan lived through the transition from Ayyubid to Rasulid rule in thirteenth-century Yemen. He was well known in his time for his critique of the ruling elites and their governance, and left behind a substantial body of writings on Islamic mysticism, theology, law and exegesis of the Qur'an. Here Muhammad Aziz presents a comprehensive portrait of Ibn 'Alwan, delineating the religious and political background in Yemen, the development of Sufi orders, the interplay between Sufi, Shi'i and Sunni traditions, and the impact of Ibn 'Alwan on the history of Sufism and Islam. The first study of Ibn 'Alwan in English, "Religion and Mysticism in Early Islam" is essential reading for all those interested in mysticism, early Islam, Sufism, and religion and history more generally.

This book covers various aspects of thermal energy storage. It looks at storage methods for thermal energy and reviews the various materials that store thermal energy and goes on to propose advanced materials that store energy better than conventional materials. The book also presents various thermophysical properties of advanced materials and the role of thermal energy storage in different applications such as buildings, solar energy, seawater desalination and cooling devices. The advanced energy storage materials have massive impact on heat transfer as compared to conventional energy storage materials. A concise discussion regarding current status, leading groups, journals and the countries working on advanced energy storage materials has also been provided. This book is useful to researchers, professionals and policymakers alike.

This book investigates energy management approaches for energy efficient or energy-centric system design and architecture and presents end-to-end energy management in the recent heterogeneous-type wireless network medium. It also considers energy management in wireless sensor and mesh networks by exploiting energy efficient transmission techniques and protocols. and explores energy management in emerging applications, services and engineering to be facilitated with 5G networks such as WBANs, VANETS and Cognitive networks. A special focus of the book is on the examination of the energy management practices in emerging wireless cellular and ad hoc networks. Considering the broad scope of energy management in wireless cellular and ad hoc networks, this book is organized into six sections covering range of Energy efficient systems and architectures; Energy efficient transmission and techniques; Energy efficient applications and services.

A software architecture manifests the major early design decisions, which determine the system's development, deployment and evolution. Thus, making better architectural decisions is one of the large challenges in software engineering. Software architecture knowledge management is about capturing practical experience and translating it into generalized architectural knowledge, and using this knowledge in the communication with stakeholders during all phases of the software lifecycle.

This book presents a concise description of knowledge management in the software architecture discipline. It explains the importance of sound knowledge management practices for improving software architecture processes and products, and makes clear the role of knowledge management in software architecture and software development processes. It presents many approaches that are in use in software companies today, approaches that have been used in other domains, and approaches under development in academia. After an initial introduction by the editors, the contributions are grouped in three parts on "Architecture Knowledge Management," "Strategies and Approaches for Managing Architectural Knowledge," and "Tools and Techniques for Managing Architectural Knowledge."

The presentation aims at information technology and software engineering professionals, in particular software architects and software architecture researchers. For the industrial audience, the book gives a broad and concise understanding of the importance of knowledge management for improving software architecture process and building capabilities in designing and evaluating better architectures for their mission- and business-critical systems. For researchers, the book will help to understand the applications of various knowledge management approaches in an industrial setting and to identify research challenges and opportunities.

This book explores the direct thrust force control (DTFC) of tubular surface-mount linear permanent magnet synchronous motors (linear PMSMs). It presents a detailed account and analysis of several advanced nonlinear control schemes, based on the direct thrust control principle, to achieve a reduction in steady-state ripple in thrust force with faster transient response, and describes their experimental validation. It also provides rigorous details of the dynamic modelling of linear PMSMs from a control system perspective, and demonstrates the superior control performance of the proposed techniques compared to the current state-of-the-art techniques. Lastly, the book proposes and validates a stator flux observer for sensorless speed estimation comprising a linear state observer and an improved sliding mode component.

Big Data Systems encompass massive challenges related to data diversity, storage mechanisms, and requirements of massive computational power. Further, capabilities of big data systems also vary with respect to type of problems. For instance, distributed memory systems are not recommended for iterative algorithms. Similarly, variations in big data systems also exist related to consistency and fault tolerance. The purpose of this book is to provide a detailed explanation of big data systems. The book covers various topics including Networking, Security, Privacy, Storage, Computation, Cloud Computing, NoSQL and NewSQL systems, High Performance Computing, and Deep Learning. An illustrative and practical approach has been adopted in which theoretical topics have been aided by well-explained programming and illustrative examples. Key Features: Introduces concepts and evolution of Big Data technology. Illustrates examples for thorough understanding. Contains programming examples for hands on development. Explains a variety of topics including NoSQL Systems, NewSQL systems, Security, Privacy, Networking, Cloud, High Performance Computing, and Deep Learning. Exemplifies widely used big data technologies such as Hadoop and Spark. Includes discussion on case studies and open issues. Provides end of chapter questions for enhanced learning.

Documentary about former professional boxer Muhammad Ali directed by film-maker Clare Lewins. With access to Ali's personal audio journals as well as his friends and family members, the film explores how he became an internationally recognised celebrity and countercultural figure due to a provocative and entertaining nature, and also examines how he was with those closest to him while at the top of his game.

The widespread use of mobile internet and smart applications has led to an explosive growth in mobile data traffic, which will continue due to the emerging need of connecting people, machines, and applications in an ubiquitous manner through the mobile infrastructure. The efficient and satisfactory operation of all these densely deployed networks hinges on a suitable backhaul and fronthaul provisioning. The research community is working to provide innovative technologies with extensive performance evaluation metrics along with the required standardisation milestones, hardware and components for a fully deployed network by 2020 and beyond. Access, Fronthaul and Backhaul Networks for 5G & Beyond provides an overview from both academic and industrial stakeholders of innovative backhaul/fronthaul solutions. Covering a wide spectrum of underlying themes ranging from the recent thrust in edge caching for backhaul relaxation to mmWave-based fronthauling for radio access networks, this book is essential reading for engineers, researchers, designers, architects, technicians, students and service providers in the field of networking, mobile and wireless and computing technologies working towards the deployment of 5G networks.

Written by the refugees themselves, this highly original anthology of Palestinians forced to live outside their homeland brings together stories of what it means to be exiled, reflections on the events that led to being displaced, and the raw experience of daily life in a camp. The 11 lives given voice here are unique, each an expression of the myriad displacements that war and occupation have forced upon Palestinians since the Nakba of 1948. At the same time, they form a collective testament of a people driven from their homes and land by colonial occupation. Each story is singular; and each tells the story of all Palestinians. As Edward Said argued in 1984, the object of Israel's colonial warfare is not only material-seeking to minimise Palestinian existence as such-but is also a narrative project that aims to obliterate Palestinian history "as possessed of a coherent narrative direction pointed towards self-determination." In these pages, Palestinian refugees narrate their own histories. The product of a creative-writing workshop organized by the Institute for Palestine Studies in Lebanon, 11 Lives tells of children's adventures in the alleyways of refugee camps, of teenage martyrs and ghosts next-door, of an UNRWA teacher's dismay at the shallowness of her colleagues, and of the love, labour, and land that form the threads of a red keffiyeh. What unites these 11 stories is "the inadmissible existence of the Palestinian people" highlighted by Said. Their words persist, as one contributor writes, "between the Nakba and the Naksa, throughout defeats and massacres, love affairs and revolutions." The stories of Palestinians in exile are also open-ended, and will continue to reverberate across borders until Palestine is free. With contributions by: Nadia Fahed, Intisar Hajaj, Yafa Talal El-Masri, Youssef Naanaa, Ruba Rahme, Hanin Mohammad Rashid, Mira Sidawi, Wedad Taha, Salem Yassin, Taha Younis, Mahmoud Mohammad Zeidan Co-published with the Institute of Palestine Studies.