Led Lighting

Autor: Sal Cangeloso
Publisher: "O'Reilly Media, Inc."
ISBN: 1449334725
File Size: 69,64 MB
Format: PDF, Mobi
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We’re on the brink of a lighting revolution with light-emitting diodes—the tiny LEDs you’ve seen in electronic devices for years. With this practical guide, you’ll go behind the scenes to see how and why manufacturers are now designing LED devices to light everything from homes and offices to streets and warehouses. Author Sal Cangeloso shows you the working parts of a “simple” LED bulb and explains the challenges electronics companies face as they push LED lighting into the mainstream. You’ll learn how you can use LEDs now, and why solid state lighting will bring dramatic changes in the near future. Explore the drivers, phosphors, and integrated circuits in a typical LED bulb Understand the challenges in producing LED bulbs with acceptable brightness, color temperature, and power consumption Learn about non-bulb LED applications, including lamps, street lights, and signage Discover the market forces driving—and impeding—the adoption of LED lighting Compare LEDs to compact fluorescent lamps (CFLs) and electron-stimulated luminescence (ESL) bulbs Gaze into the future of intelligent lighting, including networked lighting systems

La Science Et Le Monde Moderne D Alfred North Whitehead

Autor: François Beets
Publisher: Walter de Gruyter
ISBN: 3110322080
File Size: 76,42 MB
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The second international Chromatiques whiteheadiennes conference was devoted exclusively to the exegesis and contextualization of Whitehead's Science and the Modern World (1925). In order to elucidate the meaning and significance of this epoch-making work, the Proceedings are designed to form "companion" volume. With one paper devoted to each of its thirteen chapters, the Proceedings aim, on the one hand, to identify the specific contribution of each chapter to Whitehead's own research program - that is to say, to put its categories into perspective by means of an internal analysis- and, on the other hand, to identify its global impact in the history of ideas.

The Heart Led Leader

Autor: Thomas Spaulding
Publisher: Crown Business
ISBN: 055341903X
File Size: 30,73 MB
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In his first book, It's Not Just Who You Know, former CEO of Up with People Tommy Spaulding talked about the power of building genuine and lasting relationships both personally and professionally. In his new book, Spaulding turns his focus to ourselves -- to who we are. Authentic leaders, Spaulding says, live and lead from the heart. The values and principles that guide our lives and shape our ability to lead others is far more important than our title, or our ability to crunch numbers, or the impressive degrees we display on our walls. To effect true transformational change, heart-led leaders draw on the qualities of humility, vulnerability, transparency, empathy and love. Illustrated with stories from his own life, and from some of the exceptional leaders he has met and worked with over the years, Spaulding unpacks what those qualities mean, talks about the 18-inch journey from the head to the heart -- from our intellect to our emotions -- and shows us how to incorporate them into our careers, into how we manage and lead others, and into how we live our lives.


Autor: Bob Johnstone
Publisher: Createspace Independent Publishing Platform
ISBN: 9781546737421
File Size: 39,28 MB
Format: PDF, Mobi
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What kind of people does it take to change the light bulb? That is the question Bob Johnstone addresses in this follow-up to Brilliant!, his critically acclaimed book on the origins of the LED revolution. The answer is passionate individuals determined to make the world a better - and better-lit - place. The book tells the story of what has been called "one of the fastest technology shifts in human history." It is a shift that affects us all. Lighting accounts for up to twenty percent of the electricity we consume. LEDs use much less electricity than incandescent light bulbs, leading to huge reductions in our energy consumption, and helping to slow down climate change. But the LED revolution also encompasses light for better health and year-round crops, as well new, previously undreamed-of applications.

La Vie D Etienne Le Jeune Par Tienne Le Diacre

Autor: Marie-France Auzépy
Publisher: Routledge
ISBN: 1351923781
File Size: 31,55 MB
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The Life of Stephen the Younger is one of the rare sources for Byzantium in the ’Dark Ages’ and one of the key witnesses to the history of Iconoclasm. This book presents a new edition of the text, together with a French translation and commentary, and an important introduction. Stephen was a hermit, killed in 765 at the order of the emperor Constantine V; his Life was written in 809, some forty years after the 7th Ecumenical Council, Nicaea II, at which Orthodoxy was affirmed. Professor Auzépy shows how the Life reflects the politics of the era, both those of the patriarchate on which the author depended, and of the female monastery near which Stephen had lived, and transforms the probable victim of a failed political plot into a Christ-like figure martyred by a diabolic emperor. La Vie d’Etienne le Jeune est une des rares sources sur l’histoire de Byzance durant le Haut Moyen-Age et un témoignage majeur de la querelle iconoclaste. Cet ouvrage, comprenant une importante introduction, présente une nouvelle édition du texte, accompagnée d’une traduction française annotée. Etienne est un ermite qui fut assassiné en 765 sur l’ordre de l’empereur Constantin V. Sa Vie fut écrite en 809, une quarantaine d’années après le septième concile œcuménique de Nicée II, au cours duquel fut affirmé l’Orthodoxie. Le professeur Auzépy démontre comment la Vie reflète les enjeux politiques de cette époque, ceux du patriarcat dont l’auteur dépendait comme ceux du monastère de femmes auprès duquel Etienne a vécu, et comment la Vie transforme son héros, probablement mis à mort dans le cadre d’un complot, en une figure de saint moine martyrisé par un empereur diabolique. Winner of the "Prix Charles Diehl de l'Académie des Inscriptions et Belles-Lettres 1999".

Le R Seau Social D Entreprise

Autor: Garnier Alain
Publisher: Lavoisier
ISBN: 2746279843
File Size: 55,38 MB
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Après avoir envahi le web, les réseaux sociaux partent désormais à la conquête de l'entreprise. Ces nouveaux outils se révèlent être de véritables leviers stratégiques au service des organisations. Cet ouvrage analyse les enjeux de cette nouvelle mutation pour les entreprises. Il pose les questions-clés avant d'envisager un projet de réseau social d'entreprise (RSE) et la méthodologie de mise en place qui l'accompagne. Les changements imposés par son implémentation sont étudiés dans leur dimension technique (système d'information) et dans leur dimension humaine (accompagnement, conduite du changement auprès des utilisateurs et questions juridiques). Le réseau social d'entreprise présente également différents retours d'expérience et dresse un panorama des principaux éditeurs et de leur solution, apportant ainsi des exemples concrets et des pistes de réflexion nécessaires à l'appréhension de ces nouveaux usages d'entreprise.