2.897 resultater (0,41128 sekunder)

Mærke

Butik

Pris (EUR)

Nulstil filter

Produkter
Fra
Butikker

Understanding LED Illumination - M. Nisa (iem Led Lighting Technologies Khan - Bog - Taylor & Francis Inc - Plusbog.dk

Understanding LED Illumination - M. Nisa (iem Led Lighting Technologies Khan - Bog - Taylor & Francis Inc - Plusbog.dk

Understanding LED Illumination elucidates the science of lighting for light emitting diodes. It presents concepts, theory, simulations, and new design techniques that shine the spotlight on illumination, energy efficiency, and reducing electrical power consumption. The text provides an introduction to the fundamentals of LED lamp design, and highlights the principles of large-space and 3D object illumination for developing competitive LED lamps. The first part of the book discusses lamp output metrics and characterization methods, while the second part of the book explores certain retail and prototype lamp comparisons with theory, simulations and experiments It details the light propagation and distribution characteristics of LED light sources for general illumination applications, and presents design and simulation requirements for LED lamps suited for real-world applications. It also addresses light generation, efficiency, theoretical limits, efficiency limiting factors, and LED lamp design elements. - - Emphasizes the lighting aspects for LED lamps: quality and improvement - - - Describes the basics of junction diode and the intricacies of compound semiconductor optoelectronic properties including the thermal, electrical, optical, and mechanical aspects - - - Explains the challenges of LED lighting in scientific and mathematical terms - - - Includes case studies from Osram Optosemiconductors, Sylvania, and Phillips, GE, and others - The book characterizes several LED replacement lamps for household and commercial lighting and discusses a novel design for improving tubular LED replacements. It takes the mysteries out of solid-state lighting for lighting designers, and helps LED scientists and engineers effectively design their products to provide high-quality illumination.

DKK 884.00
1

Locally Led Peacebuilding - - Bog - Rowman & Littlefield - Plusbog.dk

From LED to Solid State Lighting - Jeffery C. C. Lo - Bog - John Wiley & Sons Inc - Plusbog.dk

From LED to Solid State Lighting - Jeffery C. C. Lo - Bog - John Wiley & Sons Inc - Plusbog.dk

FROM LED TO SOLID STATE LIGHTING A comprehensive and practical reference complete with hands-on exercises and experimental data In From LED to Solid State Lighting: Principles, Materials, Packaging, Characterization, and Applications , accomplished mechanical engineers Shi-Wei Ricky Lee, Jeffery C. C. Lo, Mian Tao, and Huaiyu Ye deliver a practical overview of the design and construction of LED lighting modules, from the fabrication of the LED chip to the LED modules incorporated in complete LED lighting fixtures. The distinguished authors discuss the major advantages of solid-state lighting, including energy savings, environmental friendliness, and lengthy operational life, as well as the contributions offered by the packaging of light-emitting diodes in the pursuit of these features. Readers will discover presentations of the technical issues that arise in packaging LED components, like interconnection, phosphor deposition, and encapsulation. They’ll also find insightful elaborations on optical design, analysis, and characterization. Discussions of LED applications, technology roadmaps, and IP issues round out the included material. This important book also includes: - Thorough introductions to lighting, photometry, and colorimetry, the fundamentals of light-emitting diodes, and the fabrication of LED wafers and chips - - Practical discussions of the packaging of LED chips, wafer-level packaging of LED arrays, and optical and electrical characterization - - Comprehensive explorations of board-level assembly and LED modules and optical and electrical characterization - - In-depth examinations of thermal management, reliability engineering for LED packaging, and applications for general lighting Perfect for post-graduate students and practicing engineers studying or working in the field of LED manufacturing for solid state lighting applications, From LED to Solid State Lighting: Principles, Materials, Packaging, Characterization, and Applications is also an indispensable resource for managers and technicians seeking a one-stop guide to the subject.

DKK 1005.00
1

Designs and Methods for Youth-Led Research - - Bog - SAGE Publications Inc - Plusbog.dk

Market-Led Agrarian Reform - - Bog - Taylor & Francis Ltd - Plusbog.dk

Market-Led Agrarian Reform - - Bog - Taylor & Francis Ltd - Plusbog.dk

Three-fourths of the world’s poor are rural poor. Most of the rural poor remain dependent on land-based livelihoods for their incomes and reproduction despite significant livelihood diversification in recent years. Land issue remains critical to any development discourse today. Market-led agrarian reform (MLAR) has gained prominence since the early 1990s as an alternative to state-led land reforms. This neoliberal policy is based on the inversion of what its proponents see as the features of earlier approaches, and calls for redistribution via privatized, decentralized transactions between ‘willing sellers’ and ‘willing buyers’. Its proponents, especially those associated with the World Bank, have claimed success where the policy has been implemented, but such claims have been contested by independent scholars as well as by peasant movements who are struggling to gain access to land. This book presents three thematic papers and six country studies. The thematic papers address issues of formalisation of property rights, gendered land rights, and neoliberal enclosure. These studies demonstrate the pervasive influence of neoliberal ideas on property rights and rural development debates, well beyond the ‘core’ question of land redistribution. The country cases bring together experiences from Brazil, Guatemala, El Salvador, Philippines, South Africa and Egypt. Common findings include the success of landowners in minimising the impact of reform, and a lack of post-transfer support, translating into marginal impact on poverty. The limitations of the market-led approach, and the implications of the studies presented here for the future of agrarian reform, are considered in the editors’ introduction. This book was a special issue of The Third World Quarterly .

DKK 1085.00
1

Older Adult-Led Health Promotion in Urban Communities - Melvin Delgado - Bog - Rowman & Littlefield - Plusbog.dk

Youth-Led Health Promotion in Urban Communities - Melvin Delgado - Bog - Rowman & Littlefield - Plusbog.dk

Scaling-up Community-Led Total Sanitation - Kamal Kar - Bog - Practical Action Publishing - Plusbog.dk

Women-Led Innovation and Entrepreneurship - - Bog - Taylor & Francis Ltd - Plusbog.dk

Mad Knowledges and User-Led Research - Diana Susan Rose - Bog - Springer International Publishing AG - Plusbog.dk

Cosmic Roots: The Conflict Between Science And Religion And How It Led To The Secular Age - Ira Mark Egdall - Bog - World Scientific Publishing Co Pte

Cosmic Roots: The Conflict Between Science And Religion And How It Led To The Secular Age - Ira Mark Egdall - Bog - World Scientific Publishing Co Pte

Cosmic Roots traces the five-thousand-year conflict between science and religion — and how it has shaped our modern secular worldview.Told with rare clarity and striking insight, this fascinating and thought-provoking book focuses on the history of cosmology and its sister science astronomy. For it was discoveries within these great disciplines which first led to the conflict between science and religion. The story begins with the cosmological beliefs of the ancients — from the flat Earth models of the Sumerians and Hebrews to the Greek notion of the orbits of planets as divine circles. Topics progress from Aristotle and Ptolemy''s integrated planetary models to the Sun-centered cosmologies of Copernicus, Galileo, Kepler, and the great Isaac Newton. Their combined scientific achievements stand as testimony to the power and imagination of the human mind.This meticulously researched narrative also traces the roots of Western religion, based on historical events and archeological evidence. It takes us on a captivating journey through Western religious history — from ancient paganism to the ethical monotheism of the Hebrews, Christians, and Moslems. Along the way, we follow the rise and fall of civilizations, of empires, cycles of war and peace, unification and division.The book concludes with how Darwin came up with his theory of evolution and the impact of modern physics on religious beliefs. The cumulative effect of the scientific discoveries presented in Cosmic Roots has, for better or for worse, led to the separation of science and religion we see in Western culture today.

DKK 1128.00
1