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RISS 인기검색어
- 검색키워드
- 저자 : João Carneiro (검색결과 3 건)
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A General Template to Configure Multi-Criteria Problems in Ubiquitous GDSS
João Carneiro,Diogo Martinho,Goreti Marreiros,Paulo Novais 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.11
The study of multi-criteria problems adapted to the context of Ubiquitous Group Deci-sion Support Systems (UbiGDSS) is covered in the literature through very different per-spectives and interests. There are scientific studies related to the multi-criteria problems that lie across argumentation-based negotiation, multi-agent systems, dialogues, etc. However, to perform most of these studies, a high amount of information is required. The usage of so much data or information that is difficult to collect or configure can bring good results in theoretical scenarios but can be impossible to use in the real world. In order to overcome these issues, we present in this paper a general template to configure multi-criteria problems adapted for the contexts of UbiGDSS that intends to be easy and fast to configure, appellative, intuitive, permits to collect a lot of data and helps the deci-sion-maker transmitting his beliefs and opinions to the system. Our proposal includes three sections: Problem Data, Personal Configuration and Problem Configuration. We have developed a prototype with our template with the purpose to simulate the configura-tion of a multi-criteria problem. We invited real decision-makers to use our prototype in a simulated scenario and asked to them to fulfil a survey in the end in order to study our hypotheses. Our general template achieved good results and proved to be very percepti-ble and fast to configure.
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UbiGDSS : A Theoretical Model to Predict Decision-Makers’ Sat-isfaction
João Carneiro,Ricardo Santos,Goreti Marreiros,Paulo Novais 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.7
The market globalization and the firms’ internationalization hinder the matching of the top managers’ agenda, making it difficult to meet in the same space or time. On the one hand, the appearance of Ubiquitous Group Decision Support Systems (UbiGDSS) ena-bled individuals to gather and make decisions in different spaces at different times, but on the other hand, originated problems related to the lack of human interaction. To under-stand how the arguments used can influence each of the decision-makers, what is their satisfaction regarding the decision made, and other affective issues such as emotions and mood, are some examples of that lack. In order to try to overcome this lack, we propose a theoretical model that is specially designed for agents, helping to understand the interac-tions impact on each agent and their satisfaction with the decision made.
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Léa Elias Mendes Carneiro Zaidan,Joan Manuel Rodriguez-Díaz,Daniella Carla Napoleão,Maria da Conceição Branco da Silva de Mendonça Mon,Alberto da Nova Araújo,Mohand Benachour,Valdinete Lins da Silva 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.2
We examined the photocatalytic degradation of phenol from laboratory samples under UV radiation by using BiPO4/H2O2 and TiO2/H2O2 advanced oxidation systems. Both catalysts prepared were characterized by scanning electron microscopy, Fourier transform infrared and X-ray diffraction. Surface area tests showed about 3.46 and 31.33m2·g−1, respectively, for BiPO4 and TiO2. A central composite design was developed with the following variables-- catalyst concentration, time and concentration of hydrogen peroxide--to optimize the degradation process. Removal rates of 99.99% for phenol degradation using BiPO4 and TiO2 were obtained, respectively. For mineralization of organic carbon were obtained 95,56% when using BiPO4 and 63,40% for TiO2, respectively. The lumped kinetic model represented satisfactorily the degradation of phenol process, using BiPO4/H2O2/UV (R2=0.9977) and TiO2/H2O2/UV (R2=0.9701) treatments. The toxicity tests using different seed species showed the benefits of the proposed advanced oxidation process when applied to waste waters containing these pollutants.
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