The Experts below are selected from a list of 50685 Experts worldwide ranked by ideXlab platform

Paulo Ferrão - One of the best experts on this subject based on the ideXlab platform.

  • Life Cycle Activity analysis: logistics and environmental policies for bottled water in Portugal
    OR Spektrum, 2001
    Co-Authors: Fausto Freire, Sten Thore, Paulo Ferrão
    Abstract:

    An innovative mathematical programming decision support model –Life Cycle Activity Analysis (LCAA)– is presented, integrating considerations of optimal allocations of resources and impacts upon the environment during the Life Cycle of products. LCAA is based on the classical formulation of Activity analysis and on the Life Cycle assessment framework. The concept of linear activities is extended to embrace mass and energy fluxes over the entire Life Cycle of products including their environmental impacts. Special attention is given to the presence of loops in the product chains, such as those occurring when materials/products are recovered (reused, reCycled.). An application brought from the Portuguese bottled water industry is described. The model features alternative activities for production technologies and product recovery strategies and permits the joint consideration of monetary costs and environmental burdens. The results obtained under five scenarios, including distinct disposal strategies and environmental constraints, are discussed.

  • Life Cycle Activity Analysis Applied to the Portuguese Used Tire Market
    SAE Technical Paper Series, 2000
    Co-Authors: Fausto Freire, Paulo Ferrão, Cristina Reis, Sten Thore
    Abstract:

    A mathematical programming decision model — Life Cycle Activity Analysis (LCAA), integrating economics and environment in the optimization of the Life Cycle of products is presented. LCAA is based on the integration of "Activity analysis" with the "Life Cycle assessment" framework. An illustrative application taken from the Portuguese used tire market is described. The model features two scenarios for tire end-of-Life recovery technologies, where the environmental consequences of the prohibition of tire landfill are analyzed, namely in terms of energy use. Alternative end of Life strategies such as tire remanufacture (retreading), recycling, heat generation in cement plants is considered in the model. The model shows that, provided the Portuguese constraints on the capacity of the alternative solutions, the prohibition of tire landfill result in a 5% decrease of energy consumption over the total tire Life Cycle.

Fausto Freire - One of the best experts on this subject based on the ideXlab platform.

  • Life Cycle Activity analysis: logistics and environmental policies for bottled water in Portugal
    OR Spektrum, 2001
    Co-Authors: Fausto Freire, Sten Thore, Paulo Ferrão
    Abstract:

    An innovative mathematical programming decision support model –Life Cycle Activity Analysis (LCAA)– is presented, integrating considerations of optimal allocations of resources and impacts upon the environment during the Life Cycle of products. LCAA is based on the classical formulation of Activity analysis and on the Life Cycle assessment framework. The concept of linear activities is extended to embrace mass and energy fluxes over the entire Life Cycle of products including their environmental impacts. Special attention is given to the presence of loops in the product chains, such as those occurring when materials/products are recovered (reused, reCycled.). An application brought from the Portuguese bottled water industry is described. The model features alternative activities for production technologies and product recovery strategies and permits the joint consideration of monetary costs and environmental burdens. The results obtained under five scenarios, including distinct disposal strategies and environmental constraints, are discussed.

  • Life Cycle Activity Analysis Applied to the Portuguese Used Tire Market
    SAE Technical Paper Series, 2000
    Co-Authors: Fausto Freire, Paulo Ferrão, Cristina Reis, Sten Thore
    Abstract:

    A mathematical programming decision model — Life Cycle Activity Analysis (LCAA), integrating economics and environment in the optimization of the Life Cycle of products is presented. LCAA is based on the integration of "Activity analysis" with the "Life Cycle assessment" framework. An illustrative application taken from the Portuguese used tire market is described. The model features two scenarios for tire end-of-Life recovery technologies, where the environmental consequences of the prohibition of tire landfill are analyzed, namely in terms of energy use. Alternative end of Life strategies such as tire remanufacture (retreading), recycling, heat generation in cement plants is considered in the model. The model shows that, provided the Portuguese constraints on the capacity of the alternative solutions, the prohibition of tire landfill result in a 5% decrease of energy consumption over the total tire Life Cycle.

Sten Thore - One of the best experts on this subject based on the ideXlab platform.

  • Life Cycle Activity analysis: logistics and environmental policies for bottled water in Portugal
    OR Spektrum, 2001
    Co-Authors: Fausto Freire, Sten Thore, Paulo Ferrão
    Abstract:

    An innovative mathematical programming decision support model –Life Cycle Activity Analysis (LCAA)– is presented, integrating considerations of optimal allocations of resources and impacts upon the environment during the Life Cycle of products. LCAA is based on the classical formulation of Activity analysis and on the Life Cycle assessment framework. The concept of linear activities is extended to embrace mass and energy fluxes over the entire Life Cycle of products including their environmental impacts. Special attention is given to the presence of loops in the product chains, such as those occurring when materials/products are recovered (reused, reCycled.). An application brought from the Portuguese bottled water industry is described. The model features alternative activities for production technologies and product recovery strategies and permits the joint consideration of monetary costs and environmental burdens. The results obtained under five scenarios, including distinct disposal strategies and environmental constraints, are discussed.

  • Life Cycle Activity Analysis Applied to the Portuguese Used Tire Market
    SAE Technical Paper Series, 2000
    Co-Authors: Fausto Freire, Paulo Ferrão, Cristina Reis, Sten Thore
    Abstract:

    A mathematical programming decision model — Life Cycle Activity Analysis (LCAA), integrating economics and environment in the optimization of the Life Cycle of products is presented. LCAA is based on the integration of "Activity analysis" with the "Life Cycle assessment" framework. An illustrative application taken from the Portuguese used tire market is described. The model features two scenarios for tire end-of-Life recovery technologies, where the environmental consequences of the prohibition of tire landfill are analyzed, namely in terms of energy use. Alternative end of Life strategies such as tire remanufacture (retreading), recycling, heat generation in cement plants is considered in the model. The model shows that, provided the Portuguese constraints on the capacity of the alternative solutions, the prohibition of tire landfill result in a 5% decrease of energy consumption over the total tire Life Cycle.

Sumi Helal - One of the best experts on this subject based on the ideXlab platform.

  • fuzzy logic based Activity Life Cycle tracking and recognition
    International Conference on Smart Homes and Health Telematics, 2013
    Co-Authors: Eunju Kim, Sumi Helal
    Abstract:

    Human Activity has a Life Cycle that could be tracked to provide crucial information that increases Activity recognition performance. Life Cycle tracking also enables powerful and more versatile programming models over the sentience of human activities. This paper introduces a new Activity recognition approach that is based on fuzzy logic and Activity Life Cycle tracking. We conduct preliminary performance validation and show how Activity Life Cycle tracking offers higher accuracy when compared to the traditional approach of no-Life Cycle Activity recognition.

W Mellor - One of the best experts on this subject based on the ideXlab platform.

  • Life Cycle Activity Analysis: A Case Study of Plastic Panels
    Technology Commercialization: DEA and Related Analytical Methods for Evaluating the Use and Implementation of Technical Innovation, 2002
    Co-Authors: F Freire, Robert Clift, G. Stevens, E Williams, Adisa Azapagic, W Mellor
    Abstract:

    Life Cycle Activity Analysis (LCAA) combines classical Activity Analysis with environmental Life Cycle Assessment (LCA). It provides a structured approach to economic and environmental optimization of the entire supply chain of products, processes or services. LCAA considers all activities from 'cradle to grave' including alternative methods of production, distribution, reuse and recovery. This paper builds on the previous work by the authors and applies the LCAA approach to assess alternative end-of-Life options for plastic components used in electronic equipment. The environmental and economic consequences associated with these end-of- Life options, such as remanufacturing, mechanical recycling, feedstock recycling and incineration, are evaluated for the entire supply chain and opportunities for closing the material loop are highlighted. A mathematical programming model is formulated and solved numerically to determine the optimal supply chain configurations for several scenarios. Solutions are proposed which reduce both environmental and economic impacts when compared to current practice.