Universidade Nova de Lisboa

Displaying 1-16 of 16 results

  • White Papers // Feb 2012

    Typing Dynamic Roles in Multiparty Interaction

    Communication is a central feature of nowadays software systems, as more and more often systems are built using computational resources that are concurrently available and distributed in the network. Extreme examples include operating systems where functionality is distributed between distinct threads in the system, and a service available on the...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2011

    Quality in Use of DSLs: Current Evaluation Methods

    Domain Specific Languages (DSLs) are claimed to contribute to increment productivity, while reducing the required maintenance and programming expertise. In this paper, the usability of these languages becomes a major issue: if the language is not easy to learn and use, it is unlikely to be successfully adopted. It is...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jan 2011

    Energy Efficient NDMA Multi-Packet Detection With Multiple Power Levels

    Multi-packet detection approaches handle packet collisions and errors by forcing packet retransmission and by processing the resulting signals. NDMA (Network Diversity Multiple Access) detection approach forces Q retransmissions by all stations when Q stations transmit in one collision slot. Previous work assumed that perfect power control is used, where the...

    Provided By Universidade Nova de Lisboa

  • White Papers // Nov 2010

    Innovation As A Latent Variable: An Alternative Measurement Approach

    In searching for improvements in the measurement of innovation, in this paper the authors suggest the idea of conceiving innovation as a latent variable or concept, i.e., one that cannot be accurately defined or directly measured. They propose the use of multivariate statistical analysis (a combination of cluster and discriminate...

    Provided By Universidade Nova de Lisboa

  • White Papers // Nov 2010

    Determinants Of Entrepreneurship: Are Women Different?

    In this paper the authors investigate, for the first time, how individual determinants of entrepreneurship - such as age, income, education, work status, skills, access to networks and fear of failure - differ between males and females. They conduct the exercise using individual data provided by the Global Entrepreneurship Monitor...

    Provided By Universidade Nova de Lisboa

  • White Papers // Nov 2010

    Fiscal Transfers For Biodiversity Conservation: The Portuguese Local Finances Law

    Biodiversity loss is a serious global environmental problem. Economic instruments in biodiversity policies can contribute towards reconciling the conservation costs encountered at local level with the benefits of biodiversity conservation at higher levels of governance, from regional and national levels up to the global level. This paper outlines the theoretical...

    Provided By Universidade Nova de Lisboa

  • White Papers // Aug 2010

    Innovations and Upgrades in Virtualized Network Architectures

    The difficulty of making changes to the internet architecture has spawned widespread interest in virtualized testbeds as a place to deploy new services. Despite the excitement, uncertainty surrounds the question of how technologies can bridge the gap from testbed to global availability. It is recognized that no amount of validation...

    Provided By Universidade Nova de Lisboa

  • White Papers // Aug 2010

    Encyclopedia Of Human Resources Information Systems: Challenges In e-HRM

    The dominant discourse in education and training policies, at the turn of the millennium, was on LifeLong Learning (LLL) in the context of a knowledge-based society. Globalization has exacerbated differentiation in the labor market, with the First World converting faster to a knowledge economy and a service society, while a...

    Provided By Universidade Nova de Lisboa

  • White Papers // Aug 2010

    Benchmarking Stability of Aspect-Oriented Product-Line Decompositions

    Product-line stability is essential to promote the longevity of its core assets and products. Even though modularity is a key principle to achieve stable product lines, many of their varying concerns are crosscutting. Aspect-oriented decompositions are aimed at fostering superior modularity of such crosscutting concerns. However, their ability to improve...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2010

    Multi-Agent Platform in WSAN Applications: A Time Synchronization Perspective

    Research on wireless sensor and actuator networks has attracted considerable attention in the past few years. When dealing with monitoring and control over these infrastructures in industrial environments, distributed artificial intelligence techniques, under the form of agents, can be used to improve performance, in terms of autonomy, adaptability and robustness....

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2010

    Multi-Agent Based Architecture for Robust Supervision Over Wireless Sensor Networks

    The Wireless Sensor Networks have become an important issue in the research community. They can be used to detect and classify ephemeral events, such as alarm and fault detection notifications due to important changes in machine, process, plant security, operator actions, etc. Therefore, different process components with different behaviors have...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jun 2010

    Family Matters: Endogenous Gender Discrimination In Economic Development

    The authors present a growth model where savings, fertility, labour force participation and gender wage discrimination are endogenously determined. Households consist of husband and wife, who disagree on how to allocate resources to their individual consumption. Household decisions are made by bargaining and the bargaining power of each spouse depends...

    Provided By Universidade Nova de Lisboa

  • White Papers // Mar 2010

    Innovation And Environmental Policy: Clean Vs. Dirty Technical Change

    The authors study a two sector endogenous growth model with environmental quality with two goods and two factors of production, one clean and one dirty. Technological change creates clean or dirty innovations. They compare the laissez-faire equilibrium and the social optimum and study first- and second-best policies. Optimal policy encourages...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jan 2010

    Poster Abstract: A Case Study on Performance Enhancement in WSN Using Contiki OS

    In the present paper the authors present a study considering a variable number of nodes collecting data and sending them to a sink node. This implementation is based on Contiki OS and Rime communication stack, using Crossbow TelosB motes. The present experimental scenario faces several requirements including the following: reliability...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jan 2010

    Do Software Languages Engineers Evaluate Their Languages?

    Domain Specific Languages (DSLs) can contribute to increment productivity, while reducing the required maintenance and programming expertise. The authors hypothesize that Software Languages Engineering (SLE) developers consistently skip, or relax, Language Evaluation. Based on the experience of engineering other types of software products, they assume that this may potentially lead...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2009

    The Politics Of Growth: Can Lobbying Raise Growth And Welfare?

    This paper aims at analyzing the effects of lobbying over economic growth and primarily welfare. The authors model explicitly the interaction between policy-makers and firms in a setup where the latter undertakes political contributions to the former in exchange for more restrictive market regulations which induce exit and enhance the...

    Provided By Universidade Nova de Lisboa

  • White Papers // Aug 2010

    Innovations and Upgrades in Virtualized Network Architectures

    The difficulty of making changes to the internet architecture has spawned widespread interest in virtualized testbeds as a place to deploy new services. Despite the excitement, uncertainty surrounds the question of how technologies can bridge the gap from testbed to global availability. It is recognized that no amount of validation...

    Provided By Universidade Nova de Lisboa

  • White Papers // Nov 2010

    Innovation As A Latent Variable: An Alternative Measurement Approach

    In searching for improvements in the measurement of innovation, in this paper the authors suggest the idea of conceiving innovation as a latent variable or concept, i.e., one that cannot be accurately defined or directly measured. They propose the use of multivariate statistical analysis (a combination of cluster and discriminate...

    Provided By Universidade Nova de Lisboa

  • White Papers // Aug 2010

    Encyclopedia Of Human Resources Information Systems: Challenges In e-HRM

    The dominant discourse in education and training policies, at the turn of the millennium, was on LifeLong Learning (LLL) in the context of a knowledge-based society. Globalization has exacerbated differentiation in the labor market, with the First World converting faster to a knowledge economy and a service society, while a...

    Provided By Universidade Nova de Lisboa

  • White Papers // Nov 2010

    Determinants Of Entrepreneurship: Are Women Different?

    In this paper the authors investigate, for the first time, how individual determinants of entrepreneurship - such as age, income, education, work status, skills, access to networks and fear of failure - differ between males and females. They conduct the exercise using individual data provided by the Global Entrepreneurship Monitor...

    Provided By Universidade Nova de Lisboa

  • White Papers // Mar 2010

    Innovation And Environmental Policy: Clean Vs. Dirty Technical Change

    The authors study a two sector endogenous growth model with environmental quality with two goods and two factors of production, one clean and one dirty. Technological change creates clean or dirty innovations. They compare the laissez-faire equilibrium and the social optimum and study first- and second-best policies. Optimal policy encourages...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2009

    The Politics Of Growth: Can Lobbying Raise Growth And Welfare?

    This paper aims at analyzing the effects of lobbying over economic growth and primarily welfare. The authors model explicitly the interaction between policy-makers and firms in a setup where the latter undertakes political contributions to the former in exchange for more restrictive market regulations which induce exit and enhance the...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jun 2010

    Family Matters: Endogenous Gender Discrimination In Economic Development

    The authors present a growth model where savings, fertility, labour force participation and gender wage discrimination are endogenously determined. Households consist of husband and wife, who disagree on how to allocate resources to their individual consumption. Household decisions are made by bargaining and the bargaining power of each spouse depends...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2010

    Multi-Agent Based Architecture for Robust Supervision Over Wireless Sensor Networks

    The Wireless Sensor Networks have become an important issue in the research community. They can be used to detect and classify ephemeral events, such as alarm and fault detection notifications due to important changes in machine, process, plant security, operator actions, etc. Therefore, different process components with different behaviors have...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2010

    Multi-Agent Platform in WSAN Applications: A Time Synchronization Perspective

    Research on wireless sensor and actuator networks has attracted considerable attention in the past few years. When dealing with monitoring and control over these infrastructures in industrial environments, distributed artificial intelligence techniques, under the form of agents, can be used to improve performance, in terms of autonomy, adaptability and robustness....

    Provided By Universidade Nova de Lisboa

  • White Papers // Jan 2010

    Poster Abstract: A Case Study on Performance Enhancement in WSN Using Contiki OS

    In the present paper the authors present a study considering a variable number of nodes collecting data and sending them to a sink node. This implementation is based on Contiki OS and Rime communication stack, using Crossbow TelosB motes. The present experimental scenario faces several requirements including the following: reliability...

    Provided By Universidade Nova de Lisboa

  • White Papers // Nov 2010

    Fiscal Transfers For Biodiversity Conservation: The Portuguese Local Finances Law

    Biodiversity loss is a serious global environmental problem. Economic instruments in biodiversity policies can contribute towards reconciling the conservation costs encountered at local level with the benefits of biodiversity conservation at higher levels of governance, from regional and national levels up to the global level. This paper outlines the theoretical...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jul 2011

    Quality in Use of DSLs: Current Evaluation Methods

    Domain Specific Languages (DSLs) are claimed to contribute to increment productivity, while reducing the required maintenance and programming expertise. In this paper, the usability of these languages becomes a major issue: if the language is not easy to learn and use, it is unlikely to be successfully adopted. It is...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jan 2010

    Do Software Languages Engineers Evaluate Their Languages?

    Domain Specific Languages (DSLs) can contribute to increment productivity, while reducing the required maintenance and programming expertise. The authors hypothesize that Software Languages Engineering (SLE) developers consistently skip, or relax, Language Evaluation. Based on the experience of engineering other types of software products, they assume that this may potentially lead...

    Provided By Universidade Nova de Lisboa

  • White Papers // Aug 2010

    Benchmarking Stability of Aspect-Oriented Product-Line Decompositions

    Product-line stability is essential to promote the longevity of its core assets and products. Even though modularity is a key principle to achieve stable product lines, many of their varying concerns are crosscutting. Aspect-oriented decompositions are aimed at fostering superior modularity of such crosscutting concerns. However, their ability to improve...

    Provided By Universidade Nova de Lisboa

  • White Papers // Jan 2011

    Energy Efficient NDMA Multi-Packet Detection With Multiple Power Levels

    Multi-packet detection approaches handle packet collisions and errors by forcing packet retransmission and by processing the resulting signals. NDMA (Network Diversity Multiple Access) detection approach forces Q retransmissions by all stations when Q stations transmit in one collision slot. Previous work assumed that perfect power control is used, where the...

    Provided By Universidade Nova de Lisboa

  • White Papers // Feb 2012

    Typing Dynamic Roles in Multiparty Interaction

    Communication is a central feature of nowadays software systems, as more and more often systems are built using computational resources that are concurrently available and distributed in the network. Extreme examples include operating systems where functionality is distributed between distinct threads in the system, and a service available on the...

    Provided By Universidade Nova de Lisboa