Tufts University

Displaying 1-14 of 14 results

  • White Papers // Nov 2011

    Understanding Visualization by Understanding Individual Users

    Visualizations are tools to support thinking. They can be used to externalize knowledge about a complex analytical task or domain, and through interaction, they can embody a reasoning process. As such, visualization cannot be fully understood without also understanding how the user of a visualization thinks. This understanding is nontrivial,...

    Provided By Tufts University

  • White Papers // Jun 2011

    A Proposal Mechanism Against the Attacks: Cooperative Blackhole, Blackmail, Overflow and Selfish in Routing Protocol of Mobile Ad Hoc Network

    The present paper is dedicated to study attacks and countermeasure in MANET. After a short introduction to what MANETs are and network security the authors present a survey of various attacks in MANETs pertaining to fail routing protocols. They present the different tools used by these attacks and the mechanisms...

    Provided By Tufts University

  • White Papers // Mar 2011

    Mobiles and Mobility: The Effect of Mobile Phones on Migration in Niger

    Labor markets in developing countries are subject to a high degree of frictions. The authors report the results from a randomized evaluation of an adult education program (Project ABC) in Niger, in which students learned how to use simple mobile phones as part of a literacy and numeracy class. Overall,...

    Provided By Tufts University

  • White Papers // Mar 2011

    An Energy Conserving Routing Algorithm for Wireless Sensor Networks

    Wireless Sensor Networks (WSN) technologies are widely used in today's world for monitoring purposes. In most applications, the sensors are not plugged in. Instead, they get power from the batteries they carry. To keep the network alive for a long time with such limited power, it is very important to...

    Provided By Tufts University

  • White Papers // Jan 2011

    Performance Characterization of Distributed Virtual-Reality Applications: A Case Study

    DLoVe is a new paradigm for designing and implementing distributed and non-distributed Virtual Reality applications using one-way constraints. The authors introduce a useful measure of asynchronous real-time distributed applications such as Virtual Reality. They define performance as the latency of the data in each rendered frame in addition to the...

    Provided By Tufts University

  • White Papers // Jan 2011

    Tangible Query Interfaces: Physically Constrained Tokens for Manipulating Database Queries

    The authors present a new approach for using physically constrained tokens to express, manipulate, and visualize parameterized database queries. This method extends tangible interfaces to enable interaction with large aggregates of information. They describe two interface prototypes that use physical tokens to represent database parameters. These tokens are manipulated upon...

    Provided By Tufts University

  • White Papers // Sep 2010

    The Macroeconomics Of Development Without Throughput Growth

    Serious discussion has begun of policies to promote the goal of increasing wellbeing without material growth. Moving towards this goal requires a profound reorientation of macroeconomic theory. Importantly, the call by ecological economists to move away from traditional growth-oriented models comes at a moment when standard macroeconomics is in considerable...

    Provided By Tufts University

  • White Papers // Aug 2010

    Labor Market Institutions, Firm-specific Skills, And Trade Patterns

    This paper studies how cross-country differences in labor market institutions shape the pattern of international trade, focusing on workers' skill acquisition. The author develops a model in which workers undertake non-contractible activities to acquire firm-specific skills on the job. In the model, workers have more incentive to acquire firm-specific skills...

    Provided By Tufts University

  • White Papers // Mar 2010

    Firm Value, Investment And Monetary Policy

    This paper presents empirical evidence on the effects of three nominal risk factors, local interest spreads, US interest spread, and US federal funds rate signal-to-noise ratio on the value of firms and on the cross-listing decision of firms destined to three major markets in North America, Asia and Europe. The...

    Provided By Tufts University

  • White Papers // Jun 2009

    Globalization's Reluctant Shepherd

    It's curious that Battle in Seattle, Stuart Townsend's movie about the mass riots that disabled the 1999 ministerial meeting of the World Trade Organization (WTO), was shown at both the Democratic and Republican conventions in 2008. The film not only provided an anachronistic backdrop to the political aphorism of change...

    Provided By Tufts University

  • White Papers // Apr 2009

    Comparing the Use of Tangible and Graphical Programming Languages for Informal Science Education

    Much of the work done in the field of tangible interaction has focused on creating tools for learning. However, in many cases, little evidence has been provided that tangible interfaces offer educational benefits compared to more conventional interaction techniques. This paper presents a study comparing the use of a tangible...

    Provided By Tufts University

  • White Papers // Jan 2009

    The Challenging Future of Strategic Planning

    Strategic planning for American foreign policy is either dead or dying. Or, at least, this is the assessment of mainstream commentators and policymakers in recent years. Strategic planning affects three aspects of foreign policy: the plans, the planning, and the planners. If the policy plans are actually implemented, their effect...

    Provided By Tufts University

  • White Papers // Jul 2008

    On Free Speech and Civil Discourse: Filtering Abuse in Blog Comments

    Internet blogs provide forums for discussions within virtual communities, allowing readers to post comments on what they read. However, such comments may contain abuse, such as personal attacks, offensive remarks about race or religion, or commercial spam, all of which reduce the value of community discussion. Ideally, filters would promote...

    Provided By Tufts University

  • White Papers // Jul 2008

    Ecological Macroeconomics: Consumption, Investment, And Climate Change

    The challenge of reducing global carbon emissions by 50-85 per cent by the year 2050, which is suggested by the Intergovernmental Panel on Climate Change (2007a) as a target compatible with limiting the risk of a more-than-2?C temperature increase, clearly conflicts with existing patterns of economic growth, which are heavily...

    Provided By Tufts University

  • White Papers // Apr 2009

    Comparing the Use of Tangible and Graphical Programming Languages for Informal Science Education

    Much of the work done in the field of tangible interaction has focused on creating tools for learning. However, in many cases, little evidence has been provided that tangible interfaces offer educational benefits compared to more conventional interaction techniques. This paper presents a study comparing the use of a tangible...

    Provided By Tufts University

  • White Papers // Jan 2009

    The Challenging Future of Strategic Planning

    Strategic planning for American foreign policy is either dead or dying. Or, at least, this is the assessment of mainstream commentators and policymakers in recent years. Strategic planning affects three aspects of foreign policy: the plans, the planning, and the planners. If the policy plans are actually implemented, their effect...

    Provided By Tufts University

  • White Papers // Aug 2010

    Labor Market Institutions, Firm-specific Skills, And Trade Patterns

    This paper studies how cross-country differences in labor market institutions shape the pattern of international trade, focusing on workers' skill acquisition. The author develops a model in which workers undertake non-contractible activities to acquire firm-specific skills on the job. In the model, workers have more incentive to acquire firm-specific skills...

    Provided By Tufts University

  • White Papers // Jul 2008

    On Free Speech and Civil Discourse: Filtering Abuse in Blog Comments

    Internet blogs provide forums for discussions within virtual communities, allowing readers to post comments on what they read. However, such comments may contain abuse, such as personal attacks, offensive remarks about race or religion, or commercial spam, all of which reduce the value of community discussion. Ideally, filters would promote...

    Provided By Tufts University

  • White Papers // Jan 2011

    Performance Characterization of Distributed Virtual-Reality Applications: A Case Study

    DLoVe is a new paradigm for designing and implementing distributed and non-distributed Virtual Reality applications using one-way constraints. The authors introduce a useful measure of asynchronous real-time distributed applications such as Virtual Reality. They define performance as the latency of the data in each rendered frame in addition to the...

    Provided By Tufts University

  • White Papers // Jan 2011

    Tangible Query Interfaces: Physically Constrained Tokens for Manipulating Database Queries

    The authors present a new approach for using physically constrained tokens to express, manipulate, and visualize parameterized database queries. This method extends tangible interfaces to enable interaction with large aggregates of information. They describe two interface prototypes that use physical tokens to represent database parameters. These tokens are manipulated upon...

    Provided By Tufts University

  • White Papers // Jun 2009

    Globalization's Reluctant Shepherd

    It's curious that Battle in Seattle, Stuart Townsend's movie about the mass riots that disabled the 1999 ministerial meeting of the World Trade Organization (WTO), was shown at both the Democratic and Republican conventions in 2008. The film not only provided an anachronistic backdrop to the political aphorism of change...

    Provided By Tufts University

  • White Papers // Mar 2010

    Firm Value, Investment And Monetary Policy

    This paper presents empirical evidence on the effects of three nominal risk factors, local interest spreads, US interest spread, and US federal funds rate signal-to-noise ratio on the value of firms and on the cross-listing decision of firms destined to three major markets in North America, Asia and Europe. The...

    Provided By Tufts University

  • White Papers // Sep 2010

    The Macroeconomics Of Development Without Throughput Growth

    Serious discussion has begun of policies to promote the goal of increasing wellbeing without material growth. Moving towards this goal requires a profound reorientation of macroeconomic theory. Importantly, the call by ecological economists to move away from traditional growth-oriented models comes at a moment when standard macroeconomics is in considerable...

    Provided By Tufts University

  • White Papers // Jul 2008

    Ecological Macroeconomics: Consumption, Investment, And Climate Change

    The challenge of reducing global carbon emissions by 50-85 per cent by the year 2050, which is suggested by the Intergovernmental Panel on Climate Change (2007a) as a target compatible with limiting the risk of a more-than-2?C temperature increase, clearly conflicts with existing patterns of economic growth, which are heavily...

    Provided By Tufts University

  • White Papers // Mar 2011

    Mobiles and Mobility: The Effect of Mobile Phones on Migration in Niger

    Labor markets in developing countries are subject to a high degree of frictions. The authors report the results from a randomized evaluation of an adult education program (Project ABC) in Niger, in which students learned how to use simple mobile phones as part of a literacy and numeracy class. Overall,...

    Provided By Tufts University

  • White Papers // Mar 2011

    An Energy Conserving Routing Algorithm for Wireless Sensor Networks

    Wireless Sensor Networks (WSN) technologies are widely used in today's world for monitoring purposes. In most applications, the sensors are not plugged in. Instead, they get power from the batteries they carry. To keep the network alive for a long time with such limited power, it is very important to...

    Provided By Tufts University

  • White Papers // Jun 2011

    A Proposal Mechanism Against the Attacks: Cooperative Blackhole, Blackmail, Overflow and Selfish in Routing Protocol of Mobile Ad Hoc Network

    The present paper is dedicated to study attacks and countermeasure in MANET. After a short introduction to what MANETs are and network security the authors present a survey of various attacks in MANETs pertaining to fail routing protocols. They present the different tools used by these attacks and the mechanisms...

    Provided By Tufts University

  • White Papers // Nov 2011

    Understanding Visualization by Understanding Individual Users

    Visualizations are tools to support thinking. They can be used to externalize knowledge about a complex analytical task or domain, and through interaction, they can embody a reasoning process. As such, visualization cannot be fully understood without also understanding how the user of a visualization thinks. This understanding is nontrivial,...

    Provided By Tufts University