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"Pemilihan lokasi dan desain sistem energi surya merupakan tahapan yang sangat penting dalam memastikan kelayakan, keberlanjutan, dan operasional yang optimal suatu Pembangkit Listrik Tenaga Surya (PLTS). Banyak hal yang perlu dipertimbangkan dalam evaluasinya, seperti posisi (spasial) dan kondisi suatu wilayah (geospasial). Oleh karena itu, penelitian ini bertujuan untuk mengembangkan skema atau rancangan pengambilan keputusan untuk pemilihan lokasi PLTS yang sesuai, khususnya di desa tertinggal, terdepan, dan terluar (3T) Indonesia dengan metode yang digunakan adalah kombinasi Geographical Information System (GIS) dan pendekatan pengambilan keputusan multi-kriteria (MCDM), serta optimisasi desain sistem PLTS dengan menggunakan perangkat lunak HOMER untuk daerah paling sesuai berdasarkan analisis geospasial GIS-Analytic Hierarchy Process (AHP). Hasil yang didapatkan adalah kriteria yang paling berpengaruh adalah kriteria iklim (GHI 32%, temperatur 21%, dan kelembaban 5%). Daerah yang paling sesuai untuk PLTS adalah Desa Kalibagor, Desa Tulamben, Desa Tolada, Desa Kotaraja, Desa Talaga Tomoagu, Desa Maronge, dan Desa Nelelamawangi, sedangkan desa 3T yang sesuai untuk PLTS adalah Desa Kafelulang, Desa Pendulangan, dan Desa Sampuro. Kapasitas PLTS di daerah paling sesuai berada pada rentang 45,7 s/d 2.973 kW dengan produksi listrik yang dihasilkan sebanyak 69.718 s/d 4.457.825 kWh/tahun, sedangkan di desa 3T 79,4 s/d 146 kW dengan produksi listrik yang dihasilkan sebanyak 97.685 s/d 247.234 kWh/tahun. Rentang nilai Levelized Cost of Electricity (LCOE) untuk daerah paling sesuai adalah Rp4.119/kWh s/d Rp4.639/kWh, sedangkan untuk desa 3T adalah Rp4.201/kWh s/d Rp4.808/kWh.......Site selection and solar energy system design are very important stages in ensuring the feasibility, sustainability, and optimal operation of a Solar PV Power Plant. Many things need to be considered in the evaluation, such as the position (spatial) and condition of an area (geospatial). Therefore, this study aims to develop a decision-making scheme or design for the selection of suitable solar PV locations, especially in disadvantaged, frontier, and outermost (3T) villages in Indonesia. The method used is a combination of Geographical Information System (GIS) and a multi-criteria-decision-making approach (MCDM), as well as optimization solar energy system design using HOMER software for the highly suitable area based on GIS-Analytic Hierarchy Process (AHP). The results obtained are the most influential criteria are climate (GHI 32%, temperature 21%, and humidity 5%). The highly suitable areas for solar PV power plant are Kalibagor Village, Tulamben Village, Tolada Village, Kotaraja Village, Talaga Tomoagu Village, Maronge Village, and Nelelamawangi Village, while the 3T villages that are suitable for PLTS are Kafelulang Village, Pendulangan Village, and Sampuro Village. Solar PV capacity in the highly suitable area varies between 45.7 and 2,973 kW with electricity production of 69,718 to 4,457,825 kWh/year, while in 3T villages varies 79.4 to 146 kW with electricity production of 97,685 to 247,234 kWh/year. Levelized Cost of Electricity (LCOE) in the highly suitable area varies between 4,119 IDR/kWh to 4,639 IDR/kWh, while in 3T villages varies 4,201 IDR/kWh to 4,808 IDR/kWh."

"The shipbuilding industry is currently operating in a state of intense market competition. In order to compete in the global market, shipbuilders must produce ships that are more efficient and which can be constructed in a relatively short turnaround time between order placement and delivery. This necessitates the development of new methods such as the building of series of ships, design optimization, and the modularization concept. This paper presents a design optimization approach based on the modularization concept for engine room design. The proposed method focuses on the following characteristics: piping systems, employed in multiple bulk carrier-series ships, of different sizes. Consideration is given to the cost and weight of these systems and the similarity and common features of the modules and arrangements concerned. The piping system design process is divided into two stages—module definition and arrangement design. A design structure matrix is adopted to define an effective module that could be employed for use in the design of various series of ships. An optimization system has been developed for use in the arrangement design stage. It uses a genetic algorithm to obtain a similar pattern for module arrangement in various series of ships, with specific consideration extended to cost and similarity. The details of the proposed method are discussed in this paper. In addition, the paper discusses the piping system design of an actual ship by using the proposed method and evaluates its effectiveness."

"Transformator tenaga merupakan salah satu bagian penting dalam sistem tenaga listrik dan memiliki rugi-rugi yang merupakan bagian dari biaya energi listrik. Pengadaan transformator yang hanya mempertimbangkan biaya pembelian awal saja menjadi tidak ekonomis dalam siklus hidupnya. Dalam pengadaan transformator tenaga total biaya kepemilikan sangat penting untuk dihitung dan dianalisis sebagai dasar pembuatan spesifikasi dan rancangannya agar mendapatkan biaya yang paling optimum. Dalam proses pengadaan dan desain transformator, paramater optimum tidak hanya ditentukan oleh parameter desain dan biaya paling rendah, namun dipengaruhi oleh biaya material, rugi-rugi dan pengoperasiannya. Optimasi desain dan perhitungan total biaya kepemilikan dari transformator sangat penting, agar tercapai produk yang ekonomis dan handal.Tujuan penelitian ini adalah untuk studi dan analisis optimasi rancangan dan total biaya kepemilikan dari transformator tenaga 60MVA 150/20kV dan 90 MVA 132/33kV sebagai dasar untuk penentuan spesifikasi dan rancangan yang digunakan dalam proses pembelian transformator tenaga. Studi dilakukan dengan tinjauan rancangan, fabrikasi dan struktur biaya transformator tenaga, melakukan optimasi rancangan dan perhitungan total biaya kepemilikan.Hasil penelitian menunjukan bahwa dengan optimasi menggunakan kapitalisasi rugi-rugi sebagai parameter input memberikan total biaya kepemilikan yang paling optimum, yaitu menurunkan total biaya kepemilikan sebesar 3 untuk transformator tenaga 60MVA dan 9 untuk 90 MVA. Faktor-faktor kapitalisasi rugi-rugi dan total biaya kepemilikan dipengaruhi oleh suku bunga, umur ekonomis, biaya pokok penyediaan energi, faktor beban dan rugi-rugi transformator. Hal-hal tersebut sangat penting sebagai dasar untuk menentukan spesifikasi dan evaluasi dalam menentukan rancangan dan operasi transformator tenaga yang paling optimum. Implikasi praktis dari penelitian ini adalah pemilik dan pabrikan transformator dapat mengembangkan spesifikasi, rancangan yang tepat dan membantu proses pembelian transformator yang sesuai dengan operasinya.......Power transformer is one of the most important part in electrical power system and has losses as a part of cost electricity. Purchasing of transformer that only considers the initial become uneconomical for its entire life cycle. In transformer purchasing process, total cost of ownership is very important to be calculated and analyzed and basis for specification development and its design to get the optimum cost. In transformer purchasing and design process, the optimum parameter is not only determined by the design and the lowest cost, but also influenced by material cost, losses and its operation. Design optimization and calculation transformer total cost of ownership is very important to get reliable and economical product.The purpose is to study and analysis design optimization and of power transformer 60 MVA 150 20kV dan 90 MVA 132 33 kV as a basis of specification development and design that used in purchasing process. The study is done by reviewing current design, fabrication and power transformer cost structure, design optimization and total cost ownership calculation.The results of study show optimization using losses capitalization as input give the most optimum results, which reduce total ownership cost 3 for 60 MVA transformer and 9 for 90 MVA. The factors of losses capitalization and total cost of ownership is affected by interest rate, economic life, cost of electricity, load factor and transformer losses. Those factors are very important as a basis to determine the optimum specification, design evaluation and operation. The practical implication of this study is the owner and manufacturer of transformer can develop the right specifications and design to support purchasing process of transformer according to its operation."

"This book introduces a holistic approach to ship design and its optimisation for life-cycle operation. It deals with the scientific background of the adopted approach and the associated synthesis model, which follows modern computer aided engineering (CAE) procedures. It integrates techno-economic databases, calculation and multi-objective optimisation modules and s/w tools with a well-established Computer-Aided Design (CAD) platform, along with a Virtual Vessel Framework (VVF), which will allow virtual testing before the building phase of a new vessel. The resulting graphic user interface (GUI) and information exchange systems enable the exploration of the huge design space to a much larger extent and in less time than is currently possible, thus leading to new insights and promising new design alternatives. The book not only covers the various stages of the design of the main ship system, but also addresses relevant major onboard systems/components in terms of life-cycle performance to offer readers a better understanding of suitable outfitting details, which is a key aspect when it comes the outfitting-intensive products of international shipyards. The book disseminates results of the EU funded Horizon 2020 project HOLISHIP (www.holiship.eu).;"

"This volume presents up-to-date material on the state of the art in evolutionary and deterministic methods for design, optimization and control with applications to industrial and societal problems from Europe, Asia, and America.EUROGEN 2015 was the 11th of a series of International Conferences devoted to bringing together specialists from universities, research institutions and industries developing or applying evolutionary and deterministic methods in design optimization, with emphasis on solving industrial and societal problems.The conference was organised around a number of parallel symposia, regular sessions, and keynote lectures focused on surrogate-based optimization in aerodynamic design, adjoint methods for steady & unsteady optimization, multi-disciplinary design optimization, holistic optimization in marine design, game strategies combined with evolutionary computation, optimization under uncertainty, topology optimization, optimal planning, shape optimization, and production scheduling."

"The papers in this volume focus on the following topics: design optimization and inverse problems, numerical optimization techniques,efficient analysis and reanalysis techniques, sensitivity analysis and industrial applications. The conference EngOpt brings together engineers, applied mathematicians and computer scientists working on research, development and practical application of optimization methods in all engineering disciplines and applied sciences."

"This book describes different approaches for solving industrial problems like product design, process optimization, quality enhancement, productivity improvement and cost minimization. Several optimization techniques are described. The book covers case studies on the applications of classical as well as evolutionary and swarm optimization tools for solving industrial issues. The content is very helpful for industry personnel, particularly engineers from the Operation, R&D and Quality Assurance sectors, and also the academic researchers of different engineering and/or business administration background."

"This book contains thirty-five selected papers presented at the International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control with Applications to Industrial and Societal Problems (EUROGEN 2017). This was one of the Thematic Conferences of the European Community on Computational Methods in Applied Sciences (ECCOMAS).Topics treated in the various chapters reflect the state of the art in theoretical and numerical methods and tools for optimization, and engineering design and societal applications. The volume focuses particularly on intelligent systems for multidisciplinary design optimization (mdo) problems based on multi-hybridized software, adjoint-based and one-shot methods, uncertainty quantification and optimization, multidisciplinary design optimization, applications of game theory to industrial optimization problems, applications in structural and civil engineering optimum design and surrogate models based optimization methods in aerodynamic design."

"This book covers cutting-edge findings related to uncertainty quantification and optimization under uncertainties (i.e. robust and reliable optimization), with a special emphasis on aeronautics and turbomachinery, although not limited to these fields. It describes new methods for uncertainty quantification, such as non-intrusive polynomial chaos, collocation methods, perturbation methods, as well as adjoint based and multi-level Monte Carlo methods. It includes methods for characterization of most influential uncertainties, as well as formulations for robust and reliable design optimization. A distinctive element of the book is the unique collection of test cases with prescribed uncertainties, which are representative of the current engineering practice of the industrial consortium partners involved in UMRIDA, a level 1 collaborative project within the European Commission's Seventh Framework Programme (FP7). All developed methods are benchmarked against these industrial challenges. Moreover, the book includes a section dedicated to Best Practice Guidelines for uncertainty quantification and robust design optimization, summarizing the findings obtained by the consortium members within the UMRIDA project. All in all, the book offers a authoritative guide to cutting-edge methodologies for uncertainty management in engineering design, covers a wide range of applications and discusses new ideas for future research and interdisciplinary collaborations."

"This book describes an effective framework for setting the right process parameters and new mold design to reduce the current plastic defects in injection molding. It presents a new approach for the optimization of injection molding process via (i) a new mold runner design which leads to 20 percent reduction in scrap rate, 2.5 percent reduction in manufacturing time, and easier ejection of injected part, (ii) a new mold gate design which leads to less plastic defects; and (iii) the introduction of a number of promising alternatives with high moldability indices. Besides presenting important developments of relevance academic research, the book also includes useful information for people working in the injection molding industry, especially in the green manufacturing field."