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Profitability Analysis of Spanish CCGTs under Future Scenarios of high RES and EV Penetration

Profitability Analysis of Spanish CCGTs under Future Scenari...

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International Conference on European Electricity Market, EEM

作者： Francisco Martinez Alberto Campos Salvador Doménech José Villar Instituto de Investigación Tecnológica IIT Universidad Pontificia Comillas Madrid Spain Instituto de Investigación Tecnológica IIT ICAI Universidad Pontificia Comillas Madrid Spain Technology and Science INESC TEC - Institute for Systems and Computer Engineering Porto Portugal

Among conventional generation technologies in Spain, Combined Cycle Gas Turbines (CCGT) is the one that has experienced the largest development over the first decade of the 21st century. However, despite its promising future, multiple factors (such as the renewable generation increase, demand decline, adverse regulatory policies, etc.) have compromised their competitive position, reducing their capacity factor and undermining their financial viability. Because of those issues, electricity companies are giving up on new CCGTs investments, or even considering closing or mothballing some of their recently built plants. However, many still claim for the necessity of maintaining flexible backup technologies to cope with the variability of renewable energies, as a transition technology until energy storage or other future technologies emerge. This paper makes a profitability analysis of CCGTs in the Spanish electric power sector under different scenarios of RES penetration, carbon plants decommissioning, CO 2 emission costs and EV penetration.

关键词： Investment Production Profitability Power systems Finance Coal Companies

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Evaluating YOLO Models for Grape Moth Detection in Insect Traps

Evaluating YOLO Models for Grape Moth Detection in Insect Tr...

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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Ana Cláudia Teixeira Gabriel Carneiro Raul Morais Joaquim J. Sousa António Cunha University of Trás-os-Montes and Alto Douro Vila Real Portugal Institute for Systems and Computer Engineering Technology and Science (INESC TEC) Porto Portugal Centre for the Research and Technology of Agro-Environmental and Biological Sciences University of Trás-os-Montes e Alto Douro Vila Real Portugal

The grape moth is a common pest that affects grapevines by consuming both fruit and foliage, rendering grapes deformed and unsellable. Integrated pest management for the grape moth heavily relies on pheromone traps, which serve a crucial function by identifying and tracking adult moth populations. This information is then used to determine the most appropriate time and method for implementing other control techniques. This study aims to find the best method for detecting small insects. We evaluate the following recent YOLO models: v5, v6, v7, and v8 for detecting and counting grape moths in insect traps. The best performance was achieved by YOLOv8, with an average precision of 92.4% and a counting error of 8.1%.

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Optical fiber sensors for monitoring cement paste carbonation 5

Optical fiber sensors for monitoring cement paste carbonatio...

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5th International Conference on Applications of Optics and Photonics, AOP 2022

作者： Da Silva, P.M. Mendes, J.P. Coelho, L.C.C. De Almeida, J.M.M.M. INESC TEC-Institute for Systems and Computer Engineering Technology and Science Faculty of Sciences University of Porto Rua do Campo Alegre Porto4169-007 Portugal Department of Physics and Astronomy Faculty of Sciences University of Porto Rua do Campo Alegre Porto4169-007 Portugal CIQUP - Chemistry Research Unit Chemistry and Biochemistry Department Faculty of Sciences University of Porto Porto4169-007 Portugal Department of Physics School of Sciences and Technology University of Trás-os-Montes e Alto Douro Vila Real5001-801 Portugal

The use of concrete has been widespread in our society in housing and infrastructure, despite the environmental cost associated with its production. Its decay poses a social, economic, and environmental problem. Currently, the carbonation of cement paste is monitored through the measurement of its pH, with several optical fiber sensors (OFS) have been produced for this purpose. In the current work the focus is, also, on the carbonation monitoring of cement paste through an OFS, but not through pH measurements. Single fiber reflectance spectroscopy, previously employed to measure cement paste durability, is used to monitor the discoloration of cement paste caused by carbonation. As the carbonation front reaches the fiber tip embedded in the cement paste, the signal reflected onto the fiber increases. The accelerated carbonation of two limestone cement paste samples in an atmosphere of 100% CO2 was successfully monitored. The applicability of the sensor for operational use with ambient CO2 was confirmed through the measurement of carbonation at 3% CO2. The cross interference from water ingress and egress was also evaluated, and it didn't hinder the measurements of carbonation. Therefore, a novel OFS capable of measuring cement paste carbonation and durability, was achieved. © Published under licence by IOP Publishing Ltd.

关键词： Carbonation

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Bayesian Coalition Game-Based Optimized Clustering in Wireless Sensor Networks

Bayesian Coalition Game-Based Optimized Clustering in Wirele...

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IEEE International Conference on Communications

作者： Sudhanshu Tyagi Sudeep Tanwar S. K. Gupta Neeraj Kumar Sudip Misra J. P. C. Rodrigues Sana Ullah Department of Electronics and Communication Engineering JPIET Department of Information Technology Bharat Institute of Technology Department of Electronics and Communication Engineering IIMT Department of Computer Science & Engineering Thapar University School of Information Technology IIT Kharagpur Instituto de Telecomunication University of Beira Interior Portugal and ITMO University CISTER/INESC TEC ISEP Polytechnic Institute of Porto

ISBN: (纸本)9781467364300

Wireless Sensor Networks (WSNs) have gained a lot of popularity in recent years because these are being used in wide range of applications. A collection of randomly/planned deployed tiny Sensor Nodes (SNs) can perform the task according to the need of a specific application. Utilization of energy of SNs is one of the key issues in these networks as nodes are battery operated and recharge or replacement of battery is a difficult task to be achieved. To address this issue, we propose a Bayesian Coalition Game-based optimized clustering in WSNs. To formulate the game, we propose a new Hybrid Homogeneous LEACH (HHO-LEACH) protocol for SNs in WSNs. We have used the concepts of Learning Automata (LA), and Bayesian Coalition Game (BCG) in which SNs are assumed as the players in the game with dynamic thresholds-based coalition formation among themselves, i.e., coalition among the nodes are formed using distance-based thresholds which makes a partition of the network field. SNs near to base station use direct communication for data transfer with or without single hop to the Base Station (BS) after interacting with the environment. During this process, each player may get a reward, or a penalty with respect to the finite number of actions performed. Performance of the proposed protocol is evaluated using extensive simulations by selecting various evaluation metrics. The results obtained show that proposed coalition game achieved better stability, and network lifetime in comparison to other existing protocols such as LEACH, and DD.

关键词： Lifetime Homogeneous LEACH

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Generation Expansion Planning Based on Positive Net Present Value

Generation Expansion Planning Based on Positive Net Present ...

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International Conference on European Electricity Market, EEM

作者： Salvador Doménech Martínez Fco. Alberto Campos Fernández José Villar Collado Instituto de Investigación Tecnológica IIT ICAI Universidad Pontificia Comillas Madrid Spain Instituto de Investigación Tecnológica I ICAI Universidad Pontificia Comillas Madrid Spain INESC TEC - Institute for Systems and Computer Engineering Technology and Science Porto Portugal

Many Generation Expansion Problems (GEP) models have been proposed in the literature based on agent-based equilibria or cost-minimization, integrated in bilevel or single-level models. In the simplest (and unrealistic) single-level cost minimization GEP with only the balance constraint, it can be proved that optimal generation investments are recovered through the system marginal cost, meaning that the Net Present Value (NPV) is 0. However, in more complex representations with additional constraints (such as technical or minimum capacity system constraints) non-profitable investments might occur, i.e., their NPV can go below 0. The aim of this work is to provide insights on how introducing complexity into GEP models affects the investments with and without imposing positive NPV as new constraints. The non-linearities in the NPV formulation are solved with a novel iterative algorithm. The main conclusion from the case studies is that the cost minimization GEP model forcing positive NPV can help to better represent the behavior of energy market players and simulate oligopolistic energy markets without explicitly representing profit maximization.

关键词： Investment Remuneration Production Computational modeling Minimization Profitability Finance

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Differential Refractometric Platform for Reliable Biosensing based on Long-period Gratings and Molecular Imprinting 27

Differential Refractometric Platform for Reliable Biosensing...

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27th International Conference on Optical Fiber Sensors, OFS 2022

作者： Mendes, João P. Coelho, Luís C. C. Pereira, Carlos M. Jorge, Pedro A. S. Chemistry Research Unit of University of Porto Faculty of Sciences University of Porto Porto4169-007 Portugal Faculty of Sciences of University of Porto INESC TEC - Institute for Systems and Computer EngineeringTechnology and Science Porto4169-007 Portugal Departamento de Química E Bioquímica Faculdade de Ciências Universidade do Porto Porto4169-007 Portugal Departmento de Física E Astronomia Faculdade de Ciências Universidade do Porto Porto4169-007 Portugal

ISBN: (纸本)9781957171142

A new (bio)sensing platform based on differential refractometric measurements was developed. The sensing scheme is based on the combination LPFGs/MIP/NIP, involving a dual channel system for real-time compensation of non-specific interactions. The correction system improves the sensor behavior by reducing the response to interferents by 30%. © 2022 The Author(s).

关键词： Effective refractive index Long period gratings Optical standards Sensor performance Sensors Temperature sensors

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Energetic system with biomass and how to mitigate associated problems

Energetic system with biomass and how to mitigate associated...

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International Youth Conference on Energetics (IYCE)

作者： Adelino S. Nabais João R. Galvão Rita M. T. Ascenso Sérgio A. Leitão Department of Energy and Environment Leiria Polytechnic Institute Portugal Department of Computer Science Leiria Polytechnic Institute Portugal Department of Electrical Engineering R&D Unit Portugal INESC-TEC (UTAD pole) School of Sciences and Technology Vila Real Portugal

In this work we present a greenhouse case study with a new energy model based on a Biomass energy source, once it is a more profitable and sustainable energy system, but demands special safety measures. Biomass has so... 详细信息

关键词： Biomass Combustion Boilers Green products Explosions Temperature measurement

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Optical Fiber Sensor for the Detection of Decarboxylation Products of Amino Acids 27

Optical Fiber Sensor for the Detection of Decarboxylation Pr...

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27th International Conference on Optical Fiber Sensors, OFS 2022

作者： Vasconcelos, Helena De Almeida, José M. M. M. Mendes, João Dias, Bernardo Jorge, Pedro A. S. Saraiva, Cristina Coelho, Luís C. C. School of Agrarian and Veterinary Sciences University of Trás-os-Montes E Alto Douro Vila Real5001-801 Portugal Faculty of Sciences INESC TEC-Institute for Systems and Computer Engineering University of Porto Technology and Science Porto4169-007 Portugal CIQUP - Chemistry Research Unit Chemistry and Biochemistry Department Faculty of Sciences University of Porto Porto4169-007 Portugal Department of Physics and Astronomy Faculty of Sciences University of Porto Porto4169-007 Portugal Department of Physics School of Science and Technology University of Trás-os-Montes E Alto Douro Vila Real5001-801 Portugal

Long period fiber gratings coated with TiO2 and poly(ethylene-co-vinyl acetate) (PEVA), a polymeric structure permeable biogenic amines found in foodstuff, were used to detect these compounds through the wavelength sh... 详细信息

ISBN: (纸本)9781957171142

关键词： Ethylene

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A Robotic Framework for the Robot@Factory 4.0 Competition

A Robotic Framework for the Robot@Factory 4.0 Competition

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IEEE International Conference on Autonomous Robot systems and Competitions (ICARSC)

作者： Ricardo B. Sousa Cláudia D. Rocha João G. Martins João Pedro Costa João Tomás Padrão José Maria Sarmento José Pedro Carvalho Maria S. Lopes Paulo G. Costa António Paulo Moreira Faculty of Engineering University of Porto (FEUP) Porto Portugal CRIIS - Centre for Robotics in Industry and Intelligent Systems INESC TEC - Institute for Systems and Computer Engineering Technology and Science Porto Portugal University of Trás-os-Montes and Alto Douro (UTAD) Vila Real Portugal C2SR - Cyber-Physical Control Systems and Robotics SYSTEC - Research Center for Systems and Technologies Porto Portugal

ISBN: (数字)9798350352344

ISBN: (纸本)9798350352351

Robotic competitions stand as platforms to propel the forefront of robotics research while nurturing STEM education, serving as hubs of both applied research and scientific innovation. In Portugal, the Portuguese Robotics Open (FNR) is an event with several robotic competitions, including the Robot@Factory 4.0 competition. This competition presents an example of deploying autonomous robots on a factory shop floor. Although the literature has works proposing frameworks for the original version of the Robot@Factory competition, none of them proposes a system framework for the Robot@Factory 4.0 version that presents the hardware, firmware, and software to complete the competition and achieve autonomous navigation. This paper proposes a complete robotic framework for the Robot@Factory 4.0 competition that is modular and open-access, enabling future participants to use and improve it in future editions. This work is the culmination of all the knowledge acquired by winning the 2022 and 2023 editions of the competition.

关键词： technological innovation Education Propulsion Production facilities Software Hardware Autonomous robots

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An agent-based framework for intelligent optimization of interactive visualizations

An agent-based framework for intelligent optimization of int...

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5th International Conference on Agents and Artificial Intelligence, ICAART 2013

作者： Moreira, Pedro Miguel Reis, Luís Paulo Augusto Sousa, A. ESTG-IPVC School of Technology and Management Polytechnic Institute of Viana do Castelo Viana do Castelo Portugal LIACC-Artificial Intelligence and Computer Science Lab. Univ. of Porto Porto Portugal EEUM-School of Engineering Univ. of Minho-DSI Campus de Azurém 4800-058 Guimarães Portugal INESC-TEC/DEI Faculty of Engineering Univ. of Porto R. Dr. Roberto Frias 4200-465 Porto Portugal

ISBN: (纸本)9789898565389

Interactive visualization of virtual environments is an active research topic. There is a multiplicity of applications such as simulation systems, augmented and mixed reality environments, computer games, amongst others, which endlessly demand for greater levels of realism and interaction. At every stage of the process, including modeling, image synthesis, transmission and navigation, there are identifiable circumstances which may compromise the achievement of high quality solutions for the posed problems. For many of these problems, an effective use of optimization tools can play a major role in order to achieve solutions with better quality. Within this context, an innovative optimization architecture is presented regarding to two major principles. The first principle comprises the possibility to integrate, with reduced effort, the optimization tools with existent applications and systems. Thus, we propose an agent-based framework where the optimization application may operate as an independent process in respect to the visualization application where communication is achieved by means of a specifically developed high-level message based protocol. The second principle establishes on the utilization of a class of intelligent optimization methods, known as metaheuristics, which major distinguishing quality is their great level of problem-independence, thus, enabling a wider application. The paper describes conducted experiments and presents results that demonstrate the utility and efficacy of the proposed framework.

关键词： Multi agent systems

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