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Energy demand of ICT end-use equipment, like personal computers, is considered a potentially important topic for almost 20 years. Policy measures, like the Energy Star Label and worldwide campaigns for low standby consumptions, are now... more
Energy demand of ICT end-use equipment, like personal computers, is considered a potentially important topic for almost 20 years. Policy measures, like the Energy Star Label and worldwide campaigns for low standby consumptions, are now successfully implemented in order that the energy demand of ICT end-use equipment is not growing uncontrolled. But what about energy demand of the infrastructure needed to make use of the ICT end-use equipment? Some previous work will be reported in the fi eld of voice centric telecommunication indicating that energy demand of the infrastructure is growing much faster than energy demand of the phone and reaches for mobile communication up to 90 % of total energy demand. Regarding the infrastructure for internet, a much more complex issue, the energy demand data, as found in the literature, are rather uncertain and partially contradictory. Th e fraction of energy demand for the infrastructure is probably today of the order of 30 % while mobile communication and other trends being expected to steadily increase then installing the infrastructure as the most important element of future energy demand of ICT. In the present paper, a brief survey of several analyses of the energy demand of the infrastructure for ICT is given in section 1. In section 2, preliminary results of ongoing research presently performed by one of us (LS) in the framework of a France Telecom R&D Programme are presented. Finally, section 3 broadens the problematic to the interaction between ICT and contemporary societal and ecological contexts, as they are interlinked.
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Research Interests: Computer Science, Economics, Environmental Economics, Communication, Corporate Social Responsibility, and 15 moreClimate Change, Community Development, Corporate Governance, Green Infrastructure, Computational Modelling, Energy, Corporate Sustainability, Environmental Sustainability, Green ICT, Energy Harvesting, Dependability, Cycling, Ethical Leadership, Greenhouse Effect, and Green ICT in business
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ABSTRACT Ce document constitue à la fois le rapport principal du CUEPE au Groupe d'Experts sur les Scénarios Energétiques (GESE) et la partie conceptuelle du rapport final au Fonds National pour le projet No. 44: "Analyse... more
ABSTRACT Ce document constitue à la fois le rapport principal du CUEPE au Groupe d'Experts sur les Scénarios Energétiques (GESE) et la partie conceptuelle du rapport final au Fonds National pour le projet No. 44: "Analyse technico-économique de la consommation d'énergie en Suisse".
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A partial wave analysis of the non-diffractively produced (K¯0pi+pi- system has been performed. The system was produced in the reaction K-p-->K¯0pi+pi-n at 10 GeV/c, measured in the CERN Omega spectrometer. Besides the... more
A partial wave analysis of the non-diffractively produced (K¯0pi+pi- system has been performed. The system was produced in the reaction K-p-->K¯0pi+pi-n at 10 GeV/c, measured in the CERN Omega spectrometer. Besides the well-known K*(1420) resonance, we find good evidence for the production of Q2(1400) and some indication for Q1(1290) production in JP=1+. In addition we clearly observe a bump in
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L’émergence, puis l’explosion des applications de la microélectronique et, par suite, de l’Internet ouvrent en permanence de nouveaux domaines au sein de l’activité économique. De ce point de vue de grands espoirs sont ainsi fondés sur... more
L’émergence, puis l’explosion des applications de la microélectronique et, par suite, de l’Internet ouvrent en permanence de nouveaux domaines au sein de l’activité économique. De ce point de vue de grands espoirs sont ainsi fondés sur les Technologies de l‘Information et de la Communication (TIC) en vue de la mise en place d’un Développement réellement Durable à l’échelle de la planète toute entière. Cependant, si les TIC actuelles peuvent être en théorie disséminées partout, il semble que leurs conditions d’utilisation ne puissent pas être assurées dans des conditions identiques à cause, en particulier, des exigences énormes en termes d’infrastructures. Ainsi, bien que le gisement d’applications soit colossal, la ressource correspondante semble infiniment plus élevée dans les pays industrialisés de longue date que dans les pays émergents. A l’appui de cette thèse, nous présentons schématiquement ici quelques données quantitatives relatives à l’un des aspects cruciaux : l’impact én...
Energy efficiency indicators for high electric-load buildings
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Energy demand of ICT end-use equipment, like personal computers, is considered a potentially important topic for almost 20 years. Policy measures, like the Energy Star Label and worldwide campaigns for low standby consumptions, are now... more
Energy demand of ICT end-use equipment, like personal computers, is considered a potentially important topic for almost 20 years. Policy measures, like the Energy Star Label and worldwide campaigns for low standby consumptions, are now successfully implemented in order that the energy demand of ICT end-use equipment is not growing uncontrolled. But what about energy demand of the infrastructure needed to make use of the ICT end-use equipment? Some previous work will be reported in the fi eld of voice centric telecommunication indicating that energy demand of the infrastructure is growing much faster than energy demand of the phone and reaches for mobile communication up to 90 % of total energy demand. Regarding the infrastructure for internet, a much more complex issue, the energy demand data, as found in the literature, are rather uncertain and partially contradictory. Th e fraction of energy demand for the infrastructure is probably today of the order of 30 % while mobile communic...
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Research Interests: Computer Science, Economics, Environmental Economics, Communication, Corporate Social Responsibility, and 15 moreClimate Change, Community Development, Corporate Governance, Green Infrastructure, Computational Modelling, Energy, Corporate Sustainability, Environmental Sustainability, Green ICT, Energy Harvesting, Dependability, Cycling, Ethical Leadership, Greenhouse Effect, and Green ICT in business
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Ce document constitue à la fois le rapport principal du CUEPE au Groupe d'Experts sur les Scénarios Energétiques (GESE) et la partie conceptuelle du rapport final au Fonds National pour le projet No. 44: "Analyse... more
Ce document constitue à la fois le rapport principal du CUEPE au Groupe d'Experts sur les Scénarios Energétiques (GESE) et la partie conceptuelle du rapport final au Fonds National pour le projet No. 44: "Analyse technico-économique de la consommation d'énergie en Suisse".
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Three complementary and synergistic projects dealing with indicators of energy efficiency in data centers are presented in this paper. A recent comprehensive data center Charette 1 conducted by RMI identified concepts that could lead to... more
Three complementary and synergistic projects dealing with indicators of energy efficiency in data centers are presented in this paper. A recent comprehensive data center Charette 1 conducted by RMI identified concepts that could lead to data centers that would cost less to build, work better, and save astonishing amounts of electricity. The participants recommended detailed metrics that could be useful in evaluating and influencing energy efficiency. An independent organization that would develop, demonstrate, and implement comprehensive and generally applicable cost, performance and energy intensity indicators was also proposed. LBNL has benchmarked energy consumption in a number of operating data centers. The metrics that were used allow energy efficiency comparison of various system and component designs and may provide indication of overall performance. A large sample of measured performance will be useful in identifying attainable good performance based upon current practice an...