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GPU accelerated lattice Boltzmann simulation of non-Newtonian power-law fluid in a porous enclosure

AIP Conference Proceedings 2021年第1期2324卷

作者： Mashnoon Islam Preetom Nag Md. Mamun Molla 1Department of Electrical and Computer Engineering North South University Dhaka Bangladesh 2Department of Mathematics & Physics North South University Dhaka-1229 Bangladesh 3Center for Applied Scientific Computing (CASC) North South University Dhaka-1229 Bangladesh

This paper demonstrates a numerical study of heat transfer in a square porous cavity filled with non-Newtonian power-law fluid. A Graphics Processing Unit (GPU) has been used to accelerate the numerical simulation, which uses the Multiple-Relaxation-Time (MRT) Lattice Boltzmann Method. A modified power-law model has been employed to characterize the flow of non-Newtonian fluids. The simulations have been conducted for the power-law index n ranging from (0.6 ≤ n ≤ 1.0), the Darcy number Da ranging from (10−3 ≤ Da ≤ 10−1) and the Raleigh number Ra ranging from (103 ≤ Ra ≤ 105). Results show that the average Nusselt number (Nu) decreases with an increase in the value of n while Nu increases with an increase in the value of Da. Moreover, an increment in the value of Ra leads to an increase in the average Nusselt number.

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Study of pyrolysis kinetics on domestic plastic waste

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AIP Conference Proceedings 2022年第1期2645卷

作者： Nona Merry M. Mitan Merci Fourte Yusuf Mihai Brebu M. M. Sari Sri Hastuty 1Department of Chemistry Faculty of Science and Computer Universitas Pertamina 12220 Kebayoran Lama Jakarta Indonesia 2Laboratory of Physical Chemistry of Polymers “Petru Poni” Institute of Macromolecular Chemistry Romanian Academy 41A Grigore Ghica Vodă Alley 700487 Iaşi Romania 3Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina 12220 Kebayoran Lama Jakarta Indonesia 4Department of Mechanical Engineering Faculty of Industrial Technology Universitas Pertamina 12220 Kebayoran Lama Jakarta Indonesia

The development of polymer recycling is supported by research of degradation kinetics, pyrolysis products, and even reaction mechanisms. In this research, non-isothermal kinetic methods were used to estimate activation energies and to select the best fitting reaction models for high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), and polystyrene (PS). Pyrolysis is thermal heating of materials without oxygen and conversion into gas, liquid, and solid products. To perform an optimum pyrolysis, the degradation kinetics of plastic materials need to be studied. Fourier Transform Infra-Red Spectroscopy (FTIR) was used for characterization of initial materials and Thermogravimetry (TGA) was used to determine the degradation kinetics. Based on the results of the TGA, the optimal degradation temperature for plastic and mixed waste was determined from 380 to 500°C for each selected material. The kinetic method used is Coats-Redfern. From the results of the analysis, the activation energy range for thermal decomposition is 200–300 kJ/mol. This can indicate the minimum energy necessary for the pyrolysis process.

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Vowel duration in the Buckeye corpus

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Proceedings of Meetings on Acoustics 2021年第1期45卷

作者： Sean A. Fulop Hannah J. M. Scott 1Department of Linguistics California State University Fresno Fresno C A 93740 USA sfulop@mail.csufresno.edu sfulop@mail.fresnostate.edu 2Department of Electrical Engineering and Computer Science Oregon State University Corvallis OR 97331 USA hannahjmscott@***

Phonological accounts of American English [Labov, W. et al. (2006) The Atlas of North American English, Berlin: Walter de Gruyter] rely on historical and phonotactic analysis to categorize the vowels as either long (two morae) or short (one mora). The vowels of beat, bait, boot, boat, bought, bite, bout, boy are traditionally identified as long, while bit, bet, bat, book, but, bot are supposedly short. It is a reasonable question whether these vowels are indeed longer and shorter, respectively, in phonetic duration. A study of “General American” [Rositzke, H.A. (1939) “Vowel-length in General American speech,” Language15(2):99-109] examined the durations of the vowels of 5 subjects in scripted utterances, without controlling for dialect. The findings were mostly in accord with the above categories, with the exceptions that [æ, ɑ] (bat, bot) were both phonetically long. The present study is an effort to replicate Rositzke’s on 341,425 vowel tokens in the Buckeye Corpus of conversational English (40 speakers from Columbus, Ohio). The results essentially confirm that the vowels [æ, ɑ] (bat, bot) are phonetically as long as the traditional ‘long’ vowels. This situation calls the traditional analysis of American English vowel length into question.

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Electric power supply of steel producing companies: Schematic design solutions to improve reliability of power grids

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AIP Conference Proceedings 2022年第1期2686卷

作者： Gennady P. Kornilov Ildar R. Abdulveleev Oxana S. Logunova Palvan I. Kalandarov Obid Tursunov Dilshod Kodirov Doniyor Abdurakhimov 1Department of Power Supply of Industrial Enterprises Nosov Mangnitogorsk State Technical University Magnitogorsk Russia 2Department of Computer Engineering and Programming Nosov Mangnitogorsk State Technical University Magnitogorsk Russia 3Department of Automation and Control of Technological Process and Production Tashkent Institute of Irrigation and Agricultural Mechanization Engineers 100000 Tashkent Uzbekistan 4Department of Power Supply and Renewable Energy Sources Tashkent Institute of Irrigation and Agricultural Mechanization Engineers 100000 Tashkent Uzbekistan 5Research Institute of Forestry 111104 Tashkent Uzbekistan 6Gulistan State University 120100 Gulistan Uzbekistan

This research is aimed at improving electric power supply reliability at major industrial plants by applying schematic design solutions. The authors analyzed the features of branch electric power distribution systems at a metallurgical plant; considered options of their revamping to improve reliability of electric power supply; carried out experimental research on splitting 110 kV meshed system at the integrated iron and steel works. When performing the research, mathematical simulation methods and full-scale experiment methods were used. Following the research, we proposed three options to revamp the power grid at the industrial plant applying schematic design solutions: Scheme A - separating substations, causing problems, in an individual block; Scheme B - separating independent 110 kV closed electric power grids; Scheme C – splitting the meshed system into two independent circuits. It is proved that the most efficient solution is Scheme C, which is characterized by a lower number of unscheduled downtimes of the facilities by mitigating the effects of faults in one of meshed systems on a continuous operation of shops powered from the neighboring grid; eliminated risks of simultaneous stops of all or the majority of metallurgical shops of the works during short circuits in 110 kV grids; and a considerable reduction in short circuit currents and active losses in 110 kV industrial grids. An aggregate benefit from the proposed measures aimed at revamping of the electrical grid of metallurgical units by applying schematic design solutions is over USD750,000/year.

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Functional voxel representation of the Voronoi diagram as a tool for analyzing the structure of interparticle space

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AIP Conference Proceedings 2022年第1期2503卷

作者： Mikhail Loktev 1Laboratory of Computer Graphics V. A. Trapeznikov Institute of Control Sciences of Russian Academy of Sciences 65 Profsoyuznaya street Moscow 117997 Russia 2Department of Engineering Graphics Moscow State Technological University “STANKIN” Vadkovsky Pereulok 3a. 127055 Moscow Russia

The article discusses an approach to research in the field of interpore space analysis, which is primarily geometric in nature. The method of functional-voxel modeling is used as a basic geometric tool, since it allows you to form graphic M-images (model image) of any dimension. For the analytical representation of the geometry and Voronoi diagram of the model, the mathematical apparatus of R-functions (Rvachev functions) is used. A software implementation of the proposed approaches for constructing a Voronoi diagram in three-dimensional space will be presented.

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Decision support system with MOORA method in selection of the best teachers

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AIP Conference Proceedings 2022年第1期2453卷

作者： Novendra Adisaputra Sinaga Heru Sugara Ewin Johan Sembiring Melva Epy Mardiana Manurung Harsudianto Silaen Pipin Sumantrie Victor Marudut Mulia Siregar 1Department of Computerized Accounting Politeknik Bisnis Indonesia Indonesia 2Secretary Department Politeknik Bisnis Indonesia Indonesia 3Sekolah Tinggi Teologi Sumatera Utara Indonesia 4Sekolah Tinggi Ilmu Kesehatan Arjuna Indonesia 5Sekolah Tinggi Ilmu Kesehatan Murni Teguh Indonesia 6Akademi Keperawatan Surya Nusantara Pematangsiantar Indonesia 7Department of Computer Engineering Politeknik Bisnis Indonesia Indonesia

This study aims to build a decision support system that can help make it easier to evaluate employees and teachers at the Tamansiswa Private High School Pematangsiantar branch. Every employee in the organization is required to provide positive performance through good performance, considering that organizational performance depends on the performance of its employees. For this reason, an objective assessment of employee performance will be very useful to motivate employees to work well. To simplify the process of evaluating employee performance that occurs at the Tamansiswa Private High School, it is done by designing a Decision Support System using the MOORA (Multi-Objective Optimization on the Basis of Ratio Analysis) method. This DSS uses criteria consisting of Creativity, Initiative, Personality, Social, Professionalism, and the number of absences. The results of this study obtained recommendations for the best teacher, namely the teacher with an alternative Tamsis_teacher_01 with a Yi value of 0,39105.

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Multistep immersion casting of plasmonic nanoparticle assemblage for efficient solar shortwave radiation absorption

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AIP Conference Proceedings 2020年第1期2270卷

作者： Supriya S. More G. Ravindranath Sagar More Santosh More 1Department of Automobile Engineering RIT Sakharale India 2APS College of Engineering Bangalore India 3Utopia Automation and Control Satara India

The study of a scalable absorber, which efficiently converts shortwave radiation to heat energy, is the foundational requirement for viable solar energy harvesting. Plasmonic and nano-particle are the solution, which can attain technical and economic requirement of the absorber. However, the issue of scalability and performance need to be enhanced to a greater extent. This paper demonstrates an auto-catalytic reaction based, electroless multistep immersion deposit technique for manufacturing of plasmonic nano-particle based solar shortwave radiation absorber. The technique, which can enable controlled assemblage of nano-particle layers on an aluminium substrate to achieve excellent absorptance and abatement of thermal emittance. The present work reports a scaled-up absorber, which can obtain mean determined absorptance of 0.93 at 80°C and thermal emittance of 0.06 at 80°C for shortwave radiation of 300 nm to 1800 nm wavelengths. Because of the porous structure of nano-particle deposit, the absorber shows excellent mechanical and thermal properties at high temperature up to 120°*** paper reports a plasmonic absorber with aluminium (EC1100 grade) mini-channel heat receiver as a substrate, the most novel and practical plasmonic solar absorber reported till date. The distinct scalable fabrication technique combined with enhanced performance guide it towards inexpensive, large- scale manufacturing of plasmonic solar thermal heat receiver.

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User-configurable decision support system for clinical risk management

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Procedia computer Science 2021年 190卷 463-470页

作者： Elena Kleymenova Mikhail Dronov Liubov Yashina Elena Matrosova Svetlana Payushchik Maria Nigmatkulova Vitaly Otdelenov General Medical Center of the Bank of Russia Sevastopolsky pr.66 Moscow 117593 Russia Federal Research Center “Computer Science and Control” of the Russian Academy of Sciences Vavilova str. 44 Moscow 119333 Russia Russian Medical Academy of Continuous Professional Education Barrikadnaya st. 2/1 Moscow 125993 Russia Faculty of Physics M.V. Lomonosov Moscow State University Leninskie Gory GSP-1 Moscow 119991 Russia Information Technology Department Moscow City University Vtoroy Selskohoziajstvenny proezd 4 Moscow 129226 Russia National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) Kashirskoe shosse 31 Moscow 115409 Russia

The paper describes an application of relational structure-independent database for the design of user-configurable information system aimed at the intellectual support of clinical risk management in a hospital. The system represents a clinical decision support system (CDSS) and includes three modules: prevention of hospital-acquired adverse events (HA-AE), HA-AE prevention processes and audit of HA-AE cases. Thanks to flexible system configuration and graphic user interface, the clinical experts are able to compose complex knowledge artifacts directly working with the system, without engagement of knowledge engineers for supporting knowledge formalization or highly skilled professionals to ensure the physical layer performance. The successful practical approval of CDSS in a medical facility opens up prospects for a new level of cognitive support for diagnostic and treatment processes, patient safety improvement and healthcare costs reduction.

关键词： decision support system clinical risk management structure-independent database

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Input optics systems of the KAGRA detector during O3GK (vol 2023, 023F01, 2023)

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PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS 2023年第5期2023卷

作者： Akutsu, T. Ando, M. Arai, K. Arai, Y. Araki, S. Araya, A. Aritomi, N. Asada, H. Aso, Y. Bae, S. Bae, Y. Baiotti, L. Bajpai, R. Barton, M. A. Cannon, K. Cao, Z. Capocasa, E. Chan, M. Chen, C. Chen, K. Chen, Y. Chiang, C-I Chu, H. Chu, Y-K Eguchi, S. Enomoto, Y. Flaminio, R. Fujii, Y. Fujikawa, Y. Fukunaga, M. Fukushima, M. Furuhata, T. Gao, D. Ge, G-G Ha, S. Hagiwara, A. Haino, S. Han, W-B Hasegawa, K. Hattori, K. Hayakawa, H. Hayama, K. Himemoto, Y. Hiranuma, Y. Hirata, N. Hirose, E. Hong, Z. Hsieh, B-H Huang, G-Z Huang, H-Y Huang, P. Huang, Y-C Huang, Y-J Hui, D. C. Y. Ide, S. Ikenoue, B. Imam, S. Inayoshi, K. Inoue, Y. Ioka, K. Ito, K. Itoh, Y. Izumi, K. Jeon, C. Jin, H-B Jung, K. Jung, P. Kaihotsu, K. Kajita, T. Kakizaki, M. Kamiizumi, M. Kanbara, S. Kanda, N. Kang, G. Kataoka, Y. Kawaguchi, K. Kawai, N. Kawasaki, T. Kim, C. Kim, J. Kim, J. C. Kim, Ws Kim, Y-M Kimura, N. Kita, N. Kitazawa, H. Kojima, Y. Kokeyama, K. Komori, K. Kong, A. K. H. Kotake, K. Kozakai, C. Kozu, R. Kumar, R. Kume, J. Kuo, C. Kuo, H-S Kuromiya, Y. Kuroyanagi, S. Kusayanagi, K. Kwak, K. Lee, H. K. Lee, H. W. Lee, R. Leonardi, M. Li, K. L. Lin, L. C-C Lin, C-Y Lin, F-K Lin, F-L Lin, H. L. Liu, G. C. Luo, L-W Majorana, E. Marchio, M. Michimura, Y. Mio, N. Miyakawa, O. Miyamoto, A. Miyazaki, Y. Miyo, K. Miyoki, S. Mori, Y. Morisaki, S. Moriwaki, Y. Nagano, K. Nagano, S. Nakamura, K. Nakano, H. Nakano, M. Nakashima, R. Nakayama, Y. Narikawa, T. Naticchioni, L. Negishi, R. Quynh, L. Nguyen Ni, W-T Nishizawa, A. Nozaki, S. Obuchi, Y. Ogaki, W. Oh, J. J. Oh, S. H. Ohashi, M. Ohishi, N. Ohkawa, M. Ohta, H. Okutani, Y. Okutomi, K. Oohara, K. Ooi, C. Oshino, S. Otabe, S. Pan, K-C Pang, H. Parisi, A. Park, J. Arellano, F. E. Pena Pinto, I. Sago, N. Saito, S. Saito, Y. Sakai, K. Sakai, Y. Sakuno, Y. Sato, S. Sato, T. Sawada, T. Sekiguchi, T. Sekiguchi, Y. Shao, L. Shibagaki, S. Shimizu, R. Shimoda, T. Shimode, K. Shinkai, H. Shishido, T. Shoda, A. Somiya, K. Son, E. J. Sotani, H. Sugimoto, R. Suresh, J. Suzuki, T. Suzuki, T. Tagoshi, H. Takahashi, H Gravitational Wave Science Project National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Department of Physics The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Research Center for the Early Universe The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Institute for Cosmic Ray Research KAGRA Observatory The University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa City Chiba 277-8582 Japan Accelerator Laboratory High Energy Accelerator Research Organization (KEK) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Earthquake Research Institute The University of Tokyo 1-1-1 Yayoi Bunkyo-ku Tokyo 113-0032 Japan Department of Mathematics and Physics Graduate School of Science and Technology Hirosaki University 3 Bunkyo-cho Hirosaki Aomori 036-8561 Japan Kamioka Branch National Astronomical Observatory of Japan 238 Higashi-Mozumi Kamioka-cho Hida City Gifu 506-1205 Japan The Graduate University for Advanced Studies (SOKENDAI) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Korea Institute of Science and Technology Information 245 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea National Institute for Mathematical Sciences 70 Yuseong-daero 1689 Beon-gil Yuseong-gu Daejeon 34047 Republic of Korea International College Osaka University 1-1 Machikaneyama-cho Toyonaka City Osaka 560-0043 Japan School of High Energy Accelerator Science The Graduate University for Advanced Studies (SOKENDAI) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Department of Astronomy Beijing Normal University Xinjiekouwai Street 19 Haidian District Beijing 100875 China Department of Applied Physics Fukuoka University 8-19-1 Nanakuma Jonan Fukuoka City Fukuoka 814-0180 Japan Department of Physics Tamkang University No. 151 Yingzhuan Road Danshui Dist. New Taipei City 25137 Taiwan Department of Physics

KAGRA, the underground and cryogenic gravitational-wave detector, was operated for its solo observation from February 25 to March 10, 2020, and its first joint observation with the GEO 600 detector from April 7 to April 21, 2020 (O3GK). This study presents an overview of the input optics systems of the KAGRA detector, which consist of various optical systems, such as a laser source, its intensity and frequency stabilization systems, modulators, a Faraday isolator, mode-matching telescopes, and a high-power beam dump. These optics were successfully delivered to the KAGRA interferometer and operated stably during the observations. The laser frequency noise was observed to limit the detector sensitivity above a few kilohertz, whereas the laser intensity did not significantly limit the detector sensitivity.

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Solution of fractional kinetic equations by using integral transform

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AIP Conference Proceedings 2020年第1期2253卷

作者： Garima Agarwal Ruchi Mathur 1Department of Computer Applications Manipal University Jaipur India 2Department of Mathematics Jaipur Engineering collega and Research Center Jaipur India

In the present article the author develop the solution of Fractional Kinetic Equation in a new and further generalized form by involving the ζ-Gauss Hypergeometric Functions as Kinetic Equations are having great importance in certain astrophysical problems. The change of chemical composition in star like the sun can be computed by this new generalized form of Kinetic equations. The main fold generality of the ζ-Gauss Hypergeometric Functions is discussed in terms of the solution of the Fractional Kinetic Equation. Special case involving the Gauss Hypergeometric function are also considered. The obtained results imply more precisely the known results and easily computable solution can also be established by the given results.

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