tailieunhanh - Global Guidance PrinciPles for life cycle assessment databases: A Basis for Greener Processes and Products

As a solution to the problems encountered with DIRECT, Gamma employs what appear today to be relatively straightforward solutions. Architecturally, Gamma is based on a shared-nothing [STON86] architecture consisting of a number of processors interconnected by a communications network such as a hypercube or a ring, with disks directly connected to the individual processors. It is generally accepted that such architectures can be scaled to incorporate 1000s of processors. In fact, Teradata database machines [TERA85] incorporating a shared-nothing architecture with over 200 processors are already in use. The second key idea employed by Gamma is the use of hash-based parallel algorithms. . | United Nations Environment Programme m CD nj CD Life Cycle A Basis for Greener Processes and Products GO 05 nj GO m m CD m Copyright United Nations Environment Programme 2011 This publication may be reproduced in whole or in part and in any form for educational or non-profit purposes without special permission from the copyright holder provided acknowledgement of the source is made. UNEP would appreciate receiving a copy of any publication that uses this publication as a source. No use of this publication may be made for resale or for any other commercial purpose whatsoever without prior permission in writing from the United Nations Environment Programme. Disclaimer The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the United Nations Environment Programme concerning the legal status of any country territory city or area or of its authorities or concerning delimitation of its frontiers or boundaries. Moreover the views expressed do not necessarily represent the decision or the stated policy of the United Nations Environment Programme the European Commission any national government or any other organization participating in the International Life Cycle Initiative Board and the Shonan Guidance Principles workshop. The Life Cycle Initiative complements ongoing national and regional activities. Citing of trade names or commercial processes does not constitute endorsement. Information contained herein does not necessarily reflect the policy or views of the Society of Environmental Toxicology and Chemistry SETAC . Mention of commercial or noncommercial products and services does not imply endorsement or affiliation by SETAC. rUNEP promotes environmentally sound practices globally and in its own activities. This publication is printed on 100 recycled paper using vegetable -based inks and other eco-friendly practices. Our distribution policy aims to reduce UNEP s carbon .

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