An Avalanche Is Coming Higher Education and the Revolution Ahead
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Bottleneck Discovery and Overlay Management in Network Coded Peer-To-Peer Systems
Bottleneck Discovery and Overlay Management in Network Coded Peer-to-Peer Systems ∗ Mahdi Jafarisiavoshani Christina Fragouli EPFL EPFL Switzerland Switzerland mahdi.jafari@epfl.ch christina.fragouli@epfl.ch Suhas Diggavi Christos Gkantsidis EPFL Microsoft Research Switzerland United Kingdom suhas.diggavi@epfl.ch [email protected] ABSTRACT 1. INTRODUCTION The performance of peer-to-peer (P2P) networks depends critically Peer-to-peer (P2P) networks have proved a very successful dis- on the good connectivity of the overlay topology. In this paper we tributed architecture for content distribution. The design philoso- study P2P networks for content distribution (such as Avalanche) phy of such systems is to delegate the distribution task to the par- that use randomized network coding techniques. The basic idea of ticipating nodes (peers) themselves, rather than concentrating it to such systems is that peers randomly combine and exchange linear a low number of servers with limited resources. Therefore, such a combinations of the source packets. A header appended to each P2P non-hierarchical approach is inherently scalable, since it ex- packet specifies the linear combination that the packet carries. In ploits the computing power and bandwidth of all the participants. this paper we show that the linear combinations a node receives Having addressed the problem of ensuring sufficient network re- from its neighbors reveal structural information about the network. sources, P2P systems still face the challenge of how to efficiently We propose algorithms to utilize this observation for topology man- utilize these resources while maintaining a decentralized operation. agement to avoid bottlenecks and clustering in network-coded P2P Central to this is the challenging management problem of connect- systems. -
Developer Condemns City's Attitude Aican Appeal on Hold Avalanche
Developer condemns city's attitude TERRACE -- Although city under way this spring, law when owners of lots adja- ment." said. council says it favours develop- The problem, he explained, cent to the sewer line and road However, alderman Danny ment, it's not willing to put its was sanitary sewer lines within developed their properties. Sheridan maintained, that is not Pointing out the development money where its mouth is, says the sub-division had to be hook- Council, however, refused the case. could still proceed if Shapitka a local developer. ed up to an existing city lines. both requests. The issue, he said, was paid the road and sewer connec- And that, adds Stan The nearest was :at Mountain • "It just seems the city isn't whether the city had subsidized tion costs, Sheridan said other Shapitka, has prompted him to Vista Drive, approximately too interested in lending any developers in the past -- "I'm developers had done so in the drop plans for what would have 850ft. fr0m-the:sou[hwest cur: type of assistance whatsoever," pretty sure it hasn't" -- and past. That included the city been the city's largest residential her of the development proper- Shapitka said, adding council whether it was going to do so in itself when it had developed sub-division project in many ty. appeared to want the estimated this case. "Council didn't seem properties it owned on the Birch years. Shapitka said he asked the ci- $500,000 increased tax base the willing to do that." Ave. bench and deJong Cres- In August of last year ty to build that line and to pave sub-division :would bring but While conceding Shapitka cent. -
The State of Higher Education 2014
The State of Higher Education – 2014 The State of Higher Education This publication contains new work from the OECD Higher Education Programme and the Directorate for Science, Technology and Innovation. The main chapters cover: a proposed quality framework for quality assurance and improvement, innovative concepts 2014 and practices of business models in higher education, and new approaches to funding and promoting research excellence. The publication includes three original, commissioned articles by Sir Peter Scott, Professor Jane Knight and Ms Concepcion V. Pijano. OECD Higher Education Programme (IMHE) The aim of this publication is to provide important information for members of the OECD Higher Education Programme in line with the mandate to strengthen institutional governance and management. Recognising that higher education leaders are facing many challenges and pressures and can make good use of thoughtful and pertinent analysis, the Higher Education Programme seeks to support the essential work of members in the field. The State of Higher Education publication is part of the OECD Higher Education Programme membership package. The 2014 publication is the second issue in the series produced annually by the OECD Higher Education Programme for exclusive access by members of the Programme. Write to us OECD Higher Education Programme (IMHE) Directorate for Education - OECD 2, rue André Pascal - 75775 Paris Cedex 16 - FRANCE [email protected] Find us at: www.oecd.org/edu/imhe Facebook: www.facebook.com/OECDIMHE Linked in IMHE OECD - Higher Education - YouTube: www.youtube.com/EDUcontact Twitter: twitter.com/OECD_Edu, hashtag #OECDIMHE Slideshare: www.slideshare.net/OECDEDU THE STATE OF HIGHER EDUCATION 2014 edited by Anna Glass with articles by Concepcion V. -
Survey of Verification and Validation Techniques for Small Satellite Software Development
Survey of Verification and Validation Techniques for Small Satellite Software Development Stephen A. Jacklin NASA Ames Research Center Presented at the 2015 Space Tech Expo Conference May 19-21, Long Beach, CA Summary The purpose of this paper is to provide an overview of the current trends and practices in small-satellite software verification and validation. This document is not intended to promote a specific software assurance method. Rather, it seeks to present an unbiased survey of software assurance methods used to verify and validate small satellite software and to make mention of the benefits and value of each approach. These methods include simulation and testing, verification and validation with model-based design, formal methods, and fault-tolerant software design with run-time monitoring. Although the literature reveals that simulation and testing has by far the longest legacy, model-based design methods are proving to be useful for software verification and validation. Some work in formal methods, though not widely used for any satellites, may offer new ways to improve small satellite software verification and validation. These methods need to be further advanced to deal with the state explosion problem and to make them more usable by small-satellite software engineers to be regularly applied to software verification. Last, it is explained how run-time monitoring, combined with fault-tolerant software design methods, provides an important means to detect and correct software errors that escape the verification process or those errors that are produced after launch through the effects of ionizing radiation. Introduction While the space industry has developed very good methods for verifying and validating software for large communication satellites over the last 50 years, such methods are also very expensive and require large development budgets. -
The Fourth Paradigm
ABOUT THE FOURTH PARADIGM This book presents the first broad look at the rapidly emerging field of data- THE FOUR intensive science, with the goal of influencing the worldwide scientific and com- puting research communities and inspiring the next generation of scientists. Increasingly, scientific breakthroughs will be powered by advanced computing capabilities that help researchers manipulate and explore massive datasets. The speed at which any given scientific discipline advances will depend on how well its researchers collaborate with one another, and with technologists, in areas of eScience such as databases, workflow management, visualization, and cloud- computing technologies. This collection of essays expands on the vision of pio- T neering computer scientist Jim Gray for a new, fourth paradigm of discovery based H PARADIGM on data-intensive science and offers insights into how it can be fully realized. “The impact of Jim Gray’s thinking is continuing to get people to think in a new way about how data and software are redefining what it means to do science.” —Bill GaTES “I often tell people working in eScience that they aren’t in this field because they are visionaries or super-intelligent—it’s because they care about science The and they are alive now. It is about technology changing the world, and science taking advantage of it, to do more and do better.” —RhyS FRANCIS, AUSTRALIAN eRESEARCH INFRASTRUCTURE COUNCIL F OURTH “One of the greatest challenges for 21st-century science is how we respond to this new era of data-intensive -
Conference Programme 7Th – 8Th October 2014 University of Michigan, Ann Arbor, USA
World 100 Annual Conference 2014 Transformation: where world-class universities have to change to survive Conference Programme 7TH – 8TH OCTOBER 2014 UNIVERSITY OF MICHIGAN, ANN ARBOR, USA HOSTED BY THE WORLD 100 REPUTATION NETWORK AT THE UNIVERSITY OF MICHIGAN 1 Contents Contents Contents................................................................................ 2 Welcome from the Chair and Director .................................. 3 The World 100 Reputation Network ...................................... 4 World 100 Reputation Network committee ........................... 4 World 100 conference sponsors ............................................. 5 Conference host: the University of Michigan ......................... 5 World 100 members 2014 ..................................................... 6 Become a World 100 member ............................................... 6 Pre-conference and social activities .........................................7 Conference programme ......................................................... 8 Speaker profiles ................................................................... 12 Campus map .......................................................................21 Useful information ............................................................... 23 2 Welcome Welcome from the Chair and Director Welcome to the World 100 Reputation Network conference 2014. This year our delegates represent 45 world- class institutions from 15 countries. We are delighted that you, the experts, have travelled the -
Information to Users
INFORMATION TO USERS This dissertation was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted. The following explanation of techniques is provided to help you understand markings or patterns which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity. 2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image. You will find a good image of the page in the adjacent frame. 3. When a map, drawing or chart, etc., was part of the material being photographed the photographer followed a definite method in "sectioning" the material. It is customary to begin photoing at the upper left hand corner of a large sheet and to continue photoing from le ft to right in equal sections w ith a small overlap. If necessary, sectioning is continued again — beginning below the first row and continuing on until complete. 4. The majority of users indicate that the textual content is of greatest value, however, a somewhat higher quality reproduction could be made from "photographs" if essential to the understanding of the dissertation. -
E TENSION College of Agriculture and Life Sciences Az1403h 04/07
ARIZONA COOPERATIVE E TENSION College of Agriculture and Life Sciences AZ1403h 04/07 IDENTIFYING HIGH QUALITY YOUTH PROGRAMS Community Connections and Collaborations Borden, Stuart, Waits, Tessman, Lauxman, Strickland, & Norquest The University of Arizona Overview The purpose of this fact sheet is to introduce key principles including a range of underserved and at-risk populations to building effective community collaborations in order to with special needs. Combining the efforts of youth, families, increase the quantity and quality of youth programs. Youth, schools, and other organizations results in programs parents, and community members will be introduced to that focus on the whole person (Adger, 2001). Indirectly, strategies for establishing key community collaborations collaborations can provide the means for youth to achieve that will promote the positive development of all young academically through the development of competencies in people through the establishment of high-quality youth academic, social, emotional, vocational, civic, and physical programs. domains (Honig, et al., 2001). Collaborative efforts utilize the strengths of all the collaborators and develop strategies Introduction to achieve the goals of positive youth development Community collaborations provide young people with (McLaughlin, 2000). access to a full range of developmentally appropriate youth programs (Honig, Kahne, & McLaughlin, 2001). These Developing Effective Collaborations programs provide the support and opportunities necessary Establishing and sustaining collaborative efforts with and for youth to be able to fulfill their goals (Pittman, Irby, on behalf of young people requires communities to mobilize. Tolman, Yohalem, & Ferber, 2001). In a recent nationwide The first step is creating the conditions that encourage all poll, 94% of American voters agreed that there should be stakeholders (e.g., youth organizations, schools, families, organized after-school programming for youth to attend youth, and others) to work together. -
Unbundle Products and Services Giving You Just What You Want, Nothing More
Unbundle products and services Giving you just what you want, nothing more A pattern study from the Center for the Edge’s Patterns of Disruption series Deloitte Consulting LLP’s Strategy & Operations practice works with senior executives to help them solve complex problems, bringing an approach to executable strategy that combines deep industry knowledge, rigorous analysis, and insight to enable confident action. Services include corporate strategy, customer and marketing strategy, mergers and acquisitions, social impact strategy, innovation, business model transformation, supply chain and manufacturing operations, sector-specific service operations, and financial management. Giving you just what you want, nothing more Contents Overview | 2 Case studies | 8 Is my market vulnerable? | 15 Endnotes | 16 Contacts | 19 Acknowledgements | 19 About the authors | 20 About the research team | 21 iii Unbundle products and services Overview Unbundle products and services Giving you just what you want, nothing more Def. Unbundle a product or service into stand-alone offerings that were not previously viable to sell separately. Advances in manufacturing and distribution technology change the economics of production and distribution such that established mass-market products can be decomposed into narrower, more specialized component offerings. Customers gain access to offerings that are cheaper or that better fit their specific needs than the original product could. In the report Patterns of disruption: Anticipating disruptive strategies in a world of unicorns, black swans, and exponentials, we explored, from an established incumbent’s point of view, the factors that turn a new technology or new approach into something cataclysmic to the marketplace—and to incumbents’ businesses. In doing so, we identified nine distinct patterns of disruption: recognizable configurations of marketplace conditions and new entrants’ approaches that can pose a disruptive threat to incumbents. -
Cairncross Review a Sustainable Future for Journalism
THE CAIRNCROSS REVIEW A SUSTAINABLE FUTURE FOR JOURNALISM 12 TH FEBRUARY 2019 Contents Executive Summary 5 Chapter 1 – Why should we care about the future of journalism? 14 Introduction 14 1.1 What kinds of journalism matter most? 16 1.2 The wider landscape of news provision 17 1.3 Investigative journalism 18 1.4 Reporting on democracy 21 Chapter 2 – The changing market for news 24 Introduction 24 2.1 Readers have moved online, and print has declined 25 2.2 Online news distribution has changed the ways people consume news 27 2.3 What could be done? 34 Chapter 3 – News publishers’ response to the shift online and falling revenues 39 Introduction 39 3.1 The pursuit of digital advertising revenue 40 Case Study: A Contemporary Newsroom 43 3.2 Direct payment by consumers 48 3.3 What could be done 53 Chapter 4 – The role of the online platforms in the markets for news and advertising 57 Introduction 57 4.1 The online advertising market 58 4.2 The distribution of news publishers’ content online 65 4.3 What could be done? 72 Cairncross Review | 2 Chapter 5 – A future for public interest news 76 5.1 The digital transition has undermined the provision of public-interest journalism 77 5.2 What are publishers already doing to sustain the provision of public-interest news? 78 5.3 The challenges to public-interest journalism are most acute at the local level 79 5.4 What could be done? 82 Conclusion 88 Chapter 6 – What should be done? 90 Endnotes 103 Appendix A: Terms of Reference 114 Appendix B: Advisory Panel 116 Appendix C: Review Methodology 120 Appendix D: List of organisations met during the Review 121 Appendix E: Review Glossary 123 Appendix F: Summary of the Call for Evidence 128 Introduction 128 Appendix G: Acknowledgements 157 Cairncross Review | 3 Executive Summary Executive Summary “The full importance of an epoch-making idea is But the evidence also showed the difficulties with often not perceived in the generation in which it recommending general measures to support is made.. -
The Methbot Operation
The Methbot Operation December 20, 2016 1 The Methbot Operation White Ops has exposed the largest and most profitable ad fraud operation to strike digital advertising to date. THE METHBOT OPERATION 2 Russian cybercriminals are siphoning At this point the Methbot operation has millions of advertising dollars per day become so embedded in the layers of away from U.S. media companies and the the advertising ecosystem, the only way biggest U.S. brand name advertisers in to shut it down is to make the details the single most profitable bot operation public to help affected parties take discovered to date. Dubbed “Methbot” action. Therefore, White Ops is releasing because of references to “meth” in its results from our research with that code, this operation produces massive objective in mind. volumes of fraudulent video advertising impressions by commandeering critical parts of Internet infrastructure and Information available for targeting the premium video advertising download space. Using an army of automated web • IP addresses known to belong to browsers run from fraudulently acquired Methbot for advertisers and their IP addresses, the Methbot operation agencies and platforms to block. is “watching” as many as 300 million This is the fastest way to shut down the video ads per day on falsified websites operation’s ability to monetize. designed to look like premium publisher inventory. More than 6,000 premium • Falsified domain list and full URL domains were targeted and spoofed, list to show the magnitude of impact enabling the operation to attract millions this operation had on the publishing in real advertising dollars. -
Challenges, Changes, Achievements a Celebration of Fifty Years of Geography at the University Plymouth Mark Brayshay
Challenges, Changes, Achievements A Celebration of Fifty Years of Geography at the University Plymouth Mark Brayshay Challenges, Changes, Achievements A Celebration of Fifty Years Challenges, Changes, Achievements A Celebration of Fifty Years of Geography at the University of Plymouth Mark Brayshay Challenges, Changes, Achievements A Celebration of Fifty Years of Geography at the University of Plymouth IV Challenges, Changes, Achievements A Celebration of Fifty Years of Geography at the University of Plymouth MARK BRAYSHAY University of Plymouth Press V VI Paperback edition first published in the United Kingdom in 2019 by University of Plymouth Press, Roland Levinsky Building, Drake Circus, Plymouth, Devon, PL4 8AA, United Kingdom. ISBN 978-1-84102-441-7 Copyright © Mark Brayshay and The School of Geography, Earth and Environmental Sciences, University of Plymouth, 2019 A CIP catalogue record of this book is available from the British Library. All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the author and The School of Geography, Earth and Environmental Sciences, University of Plymouth Printed and bound by Short Run Press Limited, Bittern Road, Sowton Industrial Estate, Exeter EX2 7LW This book is sold subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out, or otherwise circulated without the publisher’s prior consent in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser.