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  • optimization  (122)
  • MDPI - Multidisciplinary Digital Publishing Institute  (122)
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  • 2020-2024  (122)
  • 2020-2023
  • 2022  (122)
  • 2022  (122)
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  • 2020-2024  (122)
  • 2020-2023
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  • 1
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-05-06
    Description: Today, the flow of electricity is bidirectional, and not all electricity is centrally produced in large power plants. With the growing emergence of prosumers and microgrids, the amount of electricity produced by sources other than large, traditional power plants is ever-increasing. These alternative sources include photovoltaic (PV), wind turbine (WT), geothermal, and biomass renewable generation plants. Some renewable energy resources (solar PV and wind turbine generation) are highly dependent on natural processes and parameters (wind speed, wind direction, temperature, solar irradiation, humidity, etc.). Thus, the outputs are so stochastic in nature. New data-science-inspired real-time solutions are needed in order to co-develop digital twins of large intermittent renewable plants whose services can be globally delivered.
    Keywords: self-healing grid ; machine-learning ; feature extraction ; event detection ; optimization techniques ; manta ray foraging optimization algorithm ; multi-objective function ; radial networks ; optimal power flow ; automatic P2P energy trading ; Markov decision process ; deep reinforcement learning ; deep Q-network ; long short-term delayed reward ; inter-area oscillations ; modal analysis ; reduced order modeling ; dynamic mode decomposition ; machine learning ; artificial neural networks ; steady-state security assessment ; situation awareness ; cellular computational networks ; load flow prediction ; contingency ; fuzzy system ; change detection ; data analytics ; data mining ; filtering ; optimization ; power quality ; signal processing ; total variation smoothing ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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  • 2
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: This book covers the latest development of bioprocess technology including theoretical, numerical, and experimental approaches in biotechnology as well as green technology that bridge conventional practices and Industry 4.0. Bioprocessing is one of the key factors in several emerging industries of biofuels, used in the production of biogas, bioethanol, and biodiesel; industrial enzymes; waste management through biotechnology; new vaccines; and many more. It is hoped that the novel bioprocess and green biotechnologies presented in this book are useful in assisting the global community in working towards fulfilling the Sustainable Development Goals (SDG) of the United Nations.
    Keywords: extraction ; leaf ; liquid biphasic flotation ; polygonum ; protein ; date fruits ; proximate analysis ; physico-chemical characteristics ; date sugar ; phytoconstituents ; amino acids ; biomaterials ; Ficus carica ; diabetes mellitus ; proteomics ; sperm quality ; bioeconomy ; bioprocesses ; applications ; policy ; social welfare ; sustainability ; nanofiltration ; lipase ; Fusarium heterosporum ; fatty acid methyl ester ; electronics package ; induction heating ; magnetic field ; electric field ; TM110 single-mode cavity ; solder ; eddy current ; GABA ; fermented food ; functional food ; non-protein amino acid ; soy sauce fermentation ; lignocellulosic biomass ; holocellulose ; CMC ; degree of substitution ; excipient ; non-edible ; oil ; biodiesel production ; fuel ; Lactobacillus isolation ; lag phase ; bacteria sequencing ; breast milk ; chitosan ; co-loaded nanoparticles ; hydrophobic modification ; l-ascorbic acid ; thymoquinone ; sustainable supply chain management (SSSCM) ; social sustainability ; qualitative research ; Pakistan ; biohydrogen production ; immobilised cells ; entrapment ; alginate ; activated carbon ; carbon dioxide ; culture media ; microorganism ; optimization ; plant growth promoting rhizobacteria ; oil palm seedlings nursery ; biofertilizers ; chemical fertilizer ; n/a ; sago hampas ; amylase ; cellulase ; substrate feeding ; saccharification ; biomass ; waste cooking oil ; green fuel ; biodiesel ; heterogeneous catalyst ; deoxygenation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 3
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: Some terms, such as eco-friendly, circular economy and green technologies, have remained in our vocabulary, because the truth is that mankind is altering the planet to put its own subsistence at risk. Besides, for rationalization in the consumption of raw materials and energy, the recycling of waste through efficient and sustainable processes forms the backbone of the paradigm of a sustainable industry. One of the most relevant technologies for the new productive model is anaerobic digestion. Historically, anaerobic digestion has been developed in the field of urban wastes and wastewater treatments, but in the new challenge, its role is more relevant. Anaerobic digestion is a technologically mature biological treatment, which joins bioenergy production with the efficient removal of contaminants. This issue provides a specialized, but broad in scope, overview of the possibilities of the anaerobic digestion of lignocellulosic biomass (mainly forestry and agricultural wastes), which is expected to be a more promising substrate for the development of biorefineries. Its conversion to bioenergy through anaerobic digestion must solve some troubles: the complex lignocellulosic structure needs to be deconstructed by pretreatments and a co-substrate may need to be added to improve the biological process. Ten selected works advance this proposal into the future.
    Keywords: exhausted sugar beet pulp ; pig manure ; anaerobic co-digestion ; thermophilic ; lignocellulosic waste ; anaerobic digestion ; biogas ; optimization ; operating parameters ; review ; particle-rich substrate ; suspended solids disintegration ; disintegration kinetics ; cellulase ; lignocellulosic biomass ; pretreatment methods ; limitations ; hydro-thermal pretreatment ; biofuels ; feedstock and degradation pathway ; AD systems ; pretreatment technologies ; process stability ; codigestion ; rice straw ; nutrients ; recycling ; digestate ; methane ; corn residue ; organosolv pretreatment ; sugar beet by-products ; manure ; semi-continuous feeding mode ; methane improvement ; non-classical parameters ; sorghum mutant ; biomass ; soluble sugars ; dilute acid pretreatment ; one-pot process ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 4
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-27
    Description: Cognitive building is a pioneering topic envisioning the future of our built environment. The concept of "cognitive" provides a paradigm shift that steps from the static concept of the building as a container of human activities towards the modernist vision of "machine à habiter" of Le Corbusier, where the technological content adds the capability of learning from users' behavior and environmental variables to adapt itself to achieve major goals such as user comfort, energy-saving, flexible functionality, high durability, and good maintainability. The concept is based on digital frameworks and IoT networks towards the concept of a smart city.
    Keywords: explainable post occupancy ; humanoid robot ; lighting simulation software ; BIM ; openBIM ; IFC ; IoT ; sensors ; cognitive buildings ; asset management ; digital twin ; BEM ; simulation modelling ; dynamic simulation ; Building Information Modelling (BIM) ; Internet of Things (IoT) ; facility management ; cyber-physical systems ; Building Management System ; Digital Twin ; Post-Occupancy Evaluations ; cognitive ; digital twins ; building lifecycle management ; artificial intelligence ; decision support ; self-learning ; optimization ; building performance simulation ; lighting simulation ; lighting quality ; visual comfort ; office field study ; evidence-based design ; building information modeling ; HVAC ; fan coil ; Internet of Things ; predictive maintenance ; fault detection ; smart building ; sustainable building ; construction projects ; BIM implementation ; stakeholders ; barriers ; construction product ; servitization ; level of evidence ; level curves ; ground slopes ; embankments ; road and rail design ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general
    Language: English
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  • 5
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-05-06
    Description: With the announcement of the European Green Deal, which defines a set of policy initiatives aimed at achieving a 50–55% reduction in carbon emissions by 2030 and making Europe climate neutral in 2050, the challenge of energy transition becomes even more critical. The transformation of national energy systems towards sustainability is progressing throughout all Central and Eastern European (CEE) countries, yet the goals and results are different. Most EU Member States have made substantial progress towards meeting their long-term commitments of emissions reductions. However, some bloc members have struggled to meet their obligations. An effective energy transition requires the introduction of appropriately designed policy instruments and of robust economic analyses that ensure the best possible outcomes at the lowest costs for society. In this context, this Special Issue aims to bring into the discussion the challenges that CEE countries have to face and overcome while undergoing energy transition.
    Keywords: climate change ; food security ; grand challenges ; multiple factor analysis ; regional studies ; renewable energy ; sustainable development goals ; support systems ; energy policy ; cogeneration ; capacity market ; individual cogeneration premium ; trade globalization ; financial globalization ; CO2 emissions ; real GDP per capita ; bootstrap panel Granger causality ; EU transition economies ; photovoltaics ; renewable energy sources ; “My Electricity” ; renewable energy policy ; Poland ; “Mój Prąd” ; grant ; renewable energy grants ; renewable energy support ; economic appraisal ; social discount rate ; Ramsey formula ; consumption rate of interest ; social opportunity cost ; renewable energy sources (RES) ; green energy transformation ; sustainable development ; energy cooperatives ; coopetition ; Renewable Energy Communities ; management ; households ; energy consumption ; platform ; EU ETS ; CO2 ; emissions trading ; energy companies from Central and Eastern Europe ; decarbonisation ; energy transition ; low-carbon technology ; climate and energy policy ; indicators ; biomass ; electric vehicle ; electromobility ; energy balance ; efficiency engines ; clustering ; charging stations ; data analysis ; hydrogen cells ; energy law ; customer preferences ; electric car ; PHEV ; driving technique ; limestone sorbents ; flue gas desulphurisation ; FGD gypsum ; coal-fired power plants ; climate policy ; capacity adequacy ; linear programming ; COVID-19 pandemic ; lockdown ; electricity demand profiles ; Polish energy mix ; energy transition in Poland ; social acceptance ; carbon emissions ; fleet electrification ; sustainable mobility ; fleet management ; energy mix ; onshore wind ; risk assessment ; cash-flows ; discount rate ; cost of capital ; cost of equity ; district heating ; decarbonization ; energy efficiency ; Hubgrade ; remuneration mechanism ; power generation ; new investments ; combined heat and power ; optimization ; thermal energy storage ; uncertainty ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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  • 6
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-05-06
    Description: According to the National Research Council, the use of embedded systems throughout society could well overtake previous milestones in the information revolution. Mechatronics is the synergistic combination of electronic, mechanical engineering, controls, software and systems engineering in the design of processes and products. Mechatronic systems put “intelligence” into physical systems. Embedded sensors/actuators/processors are integral parts of mechatronic systems. The implementation of mechatronic systems is consistently on the rise. However, manufacturers are working hard to reduce the implementation cost of these systems while trying avoid compromising product quality. One way of addressing these conflicting objectives is through new automatic control methods, virtual sensing/estimation, and new innovative hardware topologies.
    Keywords: independent-wheel drive ; steering assistance ; nonlinear system ; active disturbance rejection control ; smooth road feeling ; city bus transport ; electric vehicles ; electrification ; software tool ; planning ; control ; charging management ; simulation ; analysis ; energy management ; hybrid electric vehicle ; powertrain electrification ; equivalent consumption minimization ; supercharging ; hardware-in-the-loop experiments ; driving force distribution ; decentralized traction system ; 4WD electric vehicle ; energy efficiency ; traction control ; efficiency optimization ; air mobility ; fuel cell hybrid aircraft ; stochastic optimal control ; drift counteraction optimal control ; normal force estimation ; unbiased minimum variance estimation ; controller output observer ; youla parameterization ; adaptive cruise control ; automated driving ; energy-saving ; fuel-saving ; optimal control ; passenger comfort ; new energy vehicles ; speed prediction ; macroscopic traffic model ; traffic big-data ; deep learning ; vehicle lateral dynamic and control ; unresolved issues ; application of speed prediction ; electric vehicle ; hybrid vehicle ; lithium ion ; ultracapacitor ; battery aging ; EHB ; EMB ; EWB ; system modeling ; bond graph ; optimization ; control design ; Youla parameterization ; robust control ; nonlinear optimization ; brake-by-wire ; actuator ; electro-mechanical brake ; electronic wedge brake ; electro-hydraulic brake ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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  • 7
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: This book, which is a reprint of articles published in the Special Issue "Advances in Hydrogen Energy" in Energies, seeks to contribute to disseminating the most recent advancements in the field of hydrogen energy. It does so by presenting scientific works from around the world covering both modeling and experimental analysis. The focus is placed on research covering all aspects of the hydrogen energy, from production to storage and final use, including the development of other easy to transport and versatile hydrogen-based energy carriers via the power-to-x (PtX) route, such as ammonia and methanol.Hydrogen energy research and development has attracted growing attention as one of the key solutions for clean future energy systems. In order to reduce greenhouse gas emissions, governments across the world are developing ambitious policies to support hydrogen technology, and an increasing level of funding has been allocated for projects of research, development, and demonstration of these technologies. At the same time, the private sector is capitalizing on the opportunity with larger investments in hydrogen technology solutions.While intense research activities have been dedicated to this field, several issues require further research prior to achieving full commercialization of hydrogen technology solutions. This book addresses some of these issues by presenting detailed models to optimize design strategies and operating conditions for the entire hydrogen value chain, covering production via electrolysis, storage and use in different types of fuel cells and in different forms of energy carriers.
    Keywords: methanol steam reforming ; hydrogen production ; exhaust waste heat ; rib microreactor ; air-cooled proton exchange membrane fuel cells ; adiabatic fuel cell temperature ; thermodynamic analysis of proton exchange membrane fuel cells ; ammonia ; hydrogen ; production ; storage ; utilization ; CO2 free ; hydrogen storage ; hydrogen compression ; non-mechanical compressors ; electrochemical compressors ; activated carbons ; computational analysis ; high-pressure methanol steam reformer ; phase change heat transfer ; high pressure steam condensation ; high temperature PEM ; fuel cell ; electro-osmotic drag ; polymer electrolyte membrane ; proton exchange membrane fuel cells ; proton exchange membrane electrolyzer cells ; membrane water transport ; elementary reactions steps ; rate-determining step ; solid oxide electrolysis cell ; multi-physics ; optimal rib/pitch ratio ; parameters sensitivity ; analytical expression ; SOFC ; system ; model ; stack test ; hydrogen systems ; cryogenics ; vortex tubes ; computational fluid dynamics ; low melting metal ; Al-based alloy ; metal smelting ; fuel cells ; hydrogen hybrid energy system ; thermography ; CFD modeling ; heat transfer ; optimization ; PEM ; fault ; diagnosis ; electrochemical impedance spectroscopy ; distribution of relaxation times ; reformate ; proton exchange membrane fuel cell ; gas diffusion layer ; microscopic porous layer ; fracture ; two phase flow ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 8
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: Climate change is becoming visible today, and so this book—through including innovative solutions and experimental research as well as state-of-the-art studies in challenging areas related to sustainable energy development based on hybrid energy systems that combine renewable energy systems with fuel cells—represents a useful resource for researchers in these fields. In this context, hydrogen fuel cell technology is one of the alternative solutions for the development of future clean energy systems. As this book presents the latest solutions, readers working in research areas related to the above are invited to read it.
    Keywords: fuel cell powered vehicle ; medium- and heavy-duty trucks ; component sizing ; ownership cost ; optimization ; hybrid power systems ; renewable energy sources ; fuel cell systems ; required-power-following control ; fuel economy ; permanent magnet synchronous generator ; fault ride-through ; interval type-2 fuzzy logic system ; wind energy conversion ; proton exchange membrane fuel cell ; hydrogen economy ; fueling flows control ; global extremum seeking ; load following ; matlab ; simulink ; real-time capability ; dynamic fuel cell model ; electricity distribution networks ; optimal capacitor allocation ; Genetic Algorithm ; Particle Swarm Optimization ; Bat Algorithm ; Whale Algorithm ; Sperm-Whale Algorithm ; alternative energy ; energy efficiency ; fuel cell ; hydrogen energy ; stationary application ; electrical vehicle ; AC charging station in mode 3 ; PLC ; steam methane reforming ; steam methanol reforming ; electrical efficiency ; exergy efficiency ; LNG ; Stirling engine ; solar concentrator ; automation system ; human–machine interface ; sensors ; direct methanol fuel cell ; multi stacks ; portable power ; energy management system ; Internet of Things ; long-term ; in-field test ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 9
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: This Special Issue and Book, ‘Latest Hydroforming Technology of Metallic Tubes and Sheets’, includes 16 papers, which cover the state of the art of forming technologies in the relevant topics in the field. The technologies and methodologies presented in these papers will be very helpful for scientists, engineers, and technicians in product development or forming technology innovation related to tube hydroforming processes.
    Keywords: tube hydroforming ; small-diameter tube ; magnesium alloy ; warm working ; deformation characteristics ; forming defects ; forming limit ; bellows forming ; vision-based sensor ; fuzzy control ; semi-dieless forming ; local heating ; metal spinning ; tube forming ; incremental forming ; numerical control ; hydroforming ; overlapping blank ; variable-diameter part ; thickness ; ultra-thin walled tube ; tube bending ; laminated mandrel ; rotary draw bending ; Finite Element Analysis (FEA) ; deformation property ; lightweight structure ; bending ; formability ; numerical methods ; processing technology ; crash safety ; hot bending ; partial-quench ; FEM ; strip friction test ; friction coefficient ; surface roughness ; sliding speed ; contact pressure ; movable die ; loading path ; finite element simulation ; irregular bellows ; metal tube ; planetary ball dies ; diameter reduction process ; forming limits ; biaxial stretching ; forming limit measurement ; experimental design ; strain rate sensitivity ; elevated temperatures ; pneumatic forming ; drawing ; flaring ; tube expansion ; plug drawing ; thickness reduction ; hydro-flanging ; punch head shape ; finite element analysis ; alumimum alloy ; tube bulging test ; formability test ; biaxial strain ; local rubber bulging ; cutout shape ; slit length ; two-layer tube ; rigid plasticity ; arbitrary yield criterion ; arbitrary hardening law ; analytic solution ; magnesium alloy tube ; warm hydroforming ; non-uniform temperature field ; protrusion type forming ; wall thickness distribution ; coupled thermal-structural analysis ; optimization ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 10
    Publication Date: 2022-11-17
    Description: Micro- and nano-molding technologies are continuously being developed due to enduring trends like increasing miniaturization and higher functional integration of products, devices, and systems. Furthermore, with the introduction of higher performance polymers, feedstocks, and composites, new opportunities in terms of material properties can be exploited, and, consequently, more micro-products and micro/nano-structured surfaces are currently being designed and manufactured.Innovations in micro- and nano-molding techniques are seen in the different processes employed in production (injection molding, micro injection molding, etc.); on the use of new and functional materials; for an ever-increasing number of applications (health-care devices, micro-implants, mobility, and communications products, optical elements, micro-electromechanical systems, sensors, etc.); in several key enabling technologies that support the successful realization of micro and nano molding processes (micro- and nano-tooling technologies, process monitoring techniques, micro- and nanometrology methods for quality control, simulation, etc.) and their integration into new manufacturing process chains.This Special Issue reprint showcases research papers and review articles that focus on the latest developments in micro-manufacturing and key enabling technologies for the production of both micro-products and micro-structured surfaces.
    Keywords: demolding process ; molecular dynamics simulation ; polypropylene ; injection molding ; nanostructure ; depth-to-width ratio ; air-shielding electrochemical micro-machining ; nozzle design ; flow field ; grey relational analysis ; optimization ; bistable mechanism ; V-beam structure ; compliant mechanism ; microinjection molding ; out-of-plane ; silicon photonics ; integrated optics ; waveguide crossing design ; multimode interference (MMI) ; sub-wavelength grating (SWG) ; multiplexing technology ; optical aspheric surface ; fast tool serve (FTS) ; machining error ; optical performance ; micro injection moulding ; adiabatic heating ; diesel effect ; venting ; film insert moulding ; surface analysis ; blister formation ; simulation ; semi-crystalline polymer ; PLLA ; thermoplastics ; microdevice ; direct-writing ; additive manufacturing ; micro manufacturing ; functionalization ; modeling ; micro-injection molding ; micro replication ; process simulation ; grating couplers ; integrated waveguide devices ; functional analysis ; micro-injection moulding ; machine design ; process capability ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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