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Numerical Simulation of Spear Motion as Game Items

Journal of Physics: Conference Series 2020年第1期1445卷

作者： R R Muhima S Mardi M Hariadi I Puspitasari Informatics Engineering Department ITATS Arief Rachman Hakim 100 Surabaya Indonesia Electrical Engineering Department Sepuluh Nopember Institute of Technology Indonesia Information System Study Program Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya 60115 Indonesia

Game development in 3D is mostly done by characters, items and the environment. Game items such as character weapons modeled in 3D will be the attraction of a game. In this paper, spear motion as a game items is modeled in 3D. Nonlinear Equations Six Degrees of Freedom (6 DOF) are used for mathematical models of spear motion. The parameters studied in the motion model are: geometry, mass and aerodynamics. Spear aerodynamic parameters were analyzed using the Datcom method. Numerical simulation of mathematical models of spear motion with variations in the initial velocity of the throw and the direction of the throw. From the results of numerical simulation, the maximum range R = 131.7 m at the initial velocity V0 = 40 m/s, the direction of throw (angle θ0 = 35 deg, angle 0 = 10 deg, ψ0 = 0 deg). And the maximum height Hmax = 12.18 m is achieved at the initial velocity V0 = 20 m/s, direction of throw (angle θ0 = 35 deg, angle 0 = 40 deg, angle ψ0 = 0 deg).

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The Ni isotopic composition of Ryugu reveals a common accretion region for carbonaceous chondrites

arXiv

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arXiv 2024年

作者： Spitzer, Fridolin Kleine, Thorsten Burkhardt, Christoph Hopp, Timo Yokoyama, Tetsuya Abe, Yoshinari Aléon, Jérôme OD. Alexander, Conel M. Amari, Sachiko Amelin, Yuri Bajo, Ken-Ichi Bizzarro, Martin Bouvier, Audrey Carlson, Richard W. Chaussidon, Marc Choi, Byeon-Gak Dauphas, Nicolas Davis, Andrew M. Rocco, Tommaso Di Fujiya, Wataru Fukai, Ryota Gautam, Ikshu Haba, Makiko K. Hibiya, Yuki Hidaka, Hiroshi Homma, Hisashi Hoppe, Peter Huss, Gary R. Ichida, Kiyohiro Iizuka, Tsuyoshi Ireland, Trevor R. Ishikawa, Akira Itoh, Shoichi Kawasaki, Noriyuki Kita, Noriko T. Kitajima, Kouki Komatani, Shintaro Krot, Alexander N. Liu, Ming-Chang Masuda, Yuki Morita, Mayu Moynier, Fréderic Motomura, Kazuko Nakai, Izumi Nagashima, Kazuhide Nguyen, Ann Nittler, Larry Onose, Morihiko Pack, Andreas Park, Changkun Piani, Laurette Qin, Liping Russell, Sara S. Sakamoto, Naoya Schönbächler, Maria Tafla, Lauren Tang, Haolan Terada, Kentaro Terada, Yasuko Usui, Tomohiro Wada, Sohei Wadhwa, Meenakshi Walker, Richard J. Yamashita, Katsuyuki Yin, Qing-Zhu Yoneda, Shigekazu Young, Edward D. Yui, Hiroharu Zhang, Ai-Cheng Nakamura, Tomoki Naraoka, Hiroshi Noguchi, Takaaki Okazaki, Ryuji Sakamoto, Kanako Yabuta, Hikaru Abe, Masanao Miyazaki, Akiko Nakato, Aiko Nishimura, Masahiro Okada, Tatsuaki Yada, Toru Yogata, Kasumi Nakazawa, Satoru Saiki, Takanao Tanaka, Satoshi Terui, Fuyuto Tsuda, Yuichi Watanabe, Sei-Ichiro Yoshikawa, Makoto Tachibana, Shogo Yurimoto, Hisayoshi Max Planck Institute for Solar System Research Justus-von-Liebig-Weg 3 Göttingen37077 Germany Department of Earth and Planetary Sciences Tokyo Institute of Technology Tokyo152-8551 Japan Graduate School of Engineering Materials Science and Engineering Tokyo Denki University Tokyo120-8551 Japan Institut de Minéralogie de Physique des Matériaux et de Cosmochimie Sorbonne Université Museum National d'Histoire Naturelle CNRS UMR 7590 IRD Paris75005 France Earth and Planets Laboratory Carnegie Institution for Science WashingtonDC20015 United States McDonnell Center for the Space Sciences and Physics Department Washington University 35 St. LouisMO63130 United States Geochemical Research Center The University of Tokyo Tokyo113-0033 Japan Guangzhou Institute of Geochemistry Chinese Academy of Sciences GD Guangzhou510640 China Departement of Natural History Sciences Hokkaido University Sapporo001-0021 Japan Centre for Star and Planet Formation Globe Institute University of Copenhagen Copenhagen1350 Denmark Bayerisches Geoinstitut Universität Bayreuth Bayreuth95447 Germany Université Paris Cité Institut de Physique du Globe de Paris CNRS Paris75005 France Department of Earth Science Education Seoul National University Seoul08826 Korea Republic of Department of the Geophysical Sciences Enrico Fermi Institute The University of Chicago 5734 South Ellis Avenue Chicago60637 United States Faculty of Geosciences and Geography University of Göttingen GöttingenD-37077 Germany Faculty of Science Ibaraki University Mito310-8512 Japan ISAS/JSEC JAXA Sagamihara252-5210 Japan Research Center for Advanced Science and Technology The University of Tokyo Tokyo153-8904 Japan Research Institute for Marine Resources Utilization Japan Agency for Marine-Earth Science and Technology Kanagawa237-0061 Japan Departement of Earth and Planetary Sciences Nagoya University Nagoya464-8601 Japan Osaka Application Laboratory SBUWDX Rigaku Corporation Osaka569-1

The isotopic compositions of samples returned from Cb-type asteroid Ryugu and Ivuna-type (CI) chondrites are distinct from other carbonaceous chondrites, which has led to the suggestion that Ryugu/CI chondrites formed in a different region of the accretion disk, possibly around the orbits of Uranus and Neptune. We show that, like for Fe, Ryugu and CI chondrites also have indistinguishable Ni isotope anomalies, which differ from those of other carbonaceous chondrites. We propose that this unique Fe and Ni isotopic composition reflects different accretion efficiencies of small FeNi metal grains among the carbonaceous chondrite parent bodies. The CI chondrites incorporated these grains more efficiently, possibly because they formed at the end of the disk’s lifetime, when planetesimal formation was also triggered by photoevaporation of the disk. Isotopic variations among carbonaceous chondrites may thus reflect fractionation of distinct dust components from a common reservoir, implying CI chondrites/Ryugu may have formed in the same region of the accretion disk as other carbonaceous chondrites. © 2024, CC BY.

关键词： Nickel

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Synthesis of mercaptoethyl ester of palm fatty acid distillate: Effects of dehydration methods

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IOP Conference Series: Materials Science and engineering 2020年第1期823卷

作者： I Dewa Gede Arsa Putrawan Dicka Ar Rahim Andri Patuan Anggi Sitompul Salma Rifasari Wakana Research Group on Chemical Engineering Product Design & Development Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia. Research Group on Chemical Engineering Energy & Process System Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia. Study Program of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia.

This research was aimed to evaluate the synthesis of mercaptoethyl ester of palm fatty acid distillate (PFAD) where water as a byproduct was removed by using vacuum distillation and azeotropic distillation. The reactions were done in a batch reactor using para-toluene sulfonic acid (pTSA) as a catalyst. The performances of the synthesis were evaluated by measuring the sulfhydryl content and yield of the product. Compared to dehydration by vacuum distillation, dehydration by azeotropic distillation gave lower sulfhydryl content and yield but faster reaction completion. Azeotropic distillation gave sulfhydryl content and yield in the range of 6–7% and 57–74%, respectively. Vacuum distillation gave sulfhydryl content and yield in the range of 7–9% and 75–85%, respectively.

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Toxicity assessment of SARS-CoV-2-derived peptides in combination with a mix of pollutants on zebrafish adults: A perspective study of behavioral, biometric, mutagenic, and biochemical toxicity

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The Science of the total environment 2023年第PT 2期858卷 159838页

作者： Ítalo Nascimento Freitas Amanda Vieira Dourado Amanda Pereira da Costa Araújo Sindoval Silva de Souza Thiarlen Marinho da Luz Abraão Tiago Batista Guimarães Alex Rodrigues Gomes Abu Reza Md Towfiqul Islam Md Mostafizur Rahman Andrés Hugo Arias Davoodbasha Mubarak Ali Chinnasamy Ragavendran Chinnaperumal Kamaraj Guilherme Malafaia Laboratory of Toxicology Applied to the Environment Goiano Federal Institute Urutaí GO Brazil Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia Uberlândia MG Brazil. Laboratory of Toxicology Applied to the Environment Goiano Federal Institute Urutaí GO Brazil. Post-Graduation Program in Environmental Sciences Federal University of Goiás Goiânia GO Brazil. Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás Goiânia GO Brazil. Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute Urutaí GO Brazil. Begum Rokeya University Department of Disaster Management Rangpur 5404 Bangladesh. Laboratory of Environmental Health and Ecotoxicology Department of Environmental Sciences Jahangirnagar University Dhaka 1342 Bangladesh. Instituto Argentino de Oceanografía (IADO) Universidad Nacional del Sur (UNS)-CONICET Florida 8000 Complejo CCT CONICET Bahía Blanca Edificio E1 B8000BFW Bahía Blanca Argentina. Petroleum and Chemical Engineering Faculty of Engineering Universiti Teknologi Brunei Bandar Seri Begawan BE1410 Brunei Darussalam. Department of Conservative Dentistry and Endodontics Saveetha Dental College and Hospitals Saveetha Institute of Medical and Technical Sciences (SIMATS) Chennai India. Interdisciplinary Institute of Indian System of Medicine (IIISM) Directorate of Research and Virtual Education SRM Institute of Science and Technology (SRMIST) Kattankulathur 603203 Tamil Nadu India. Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia Uberlândia MG Brazil Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás Goiânia GO Brazil Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute Urutaí GO Brazil. Electronic address: guilhermeifgoiano@***.

The dispersion of SARS-CoV-2 in aquatic environments via the discharge of domestic and hospital sewage has been confirmed in different locations. Thus, we aimed to evaluate the possible impacts of zebrafish (Danio rerio) exposure to SARS-CoV-2 peptide fragments (PSPD-2001, 2002, and 2003) alone and combined with a mix of emerging pollutants. Our data did not reveal the induction of behavioral, biometric, or mutagenic changes. But we noticed an organ-dependent biochemical response. While nitric oxide and malondialdehyde production in the brain, gills, and muscle did not differ between groups, superoxide dismutase activity was reduced in the "PSPD", "Mix", and "Mix+PSPD" groups. An increase in catalase activity and a reduction in DPPH radical scavenging activity were observed in the brains of animals exposed to the treatments. However, the "Mix+PSPD" group had a higher IBRv2 value, with NO levels (brain), the reduction of acetylcholinesterase activity (muscles), and the DPPH radical scavenging activity (brain and muscles), the most discriminant factors for this group. The principal component analysis (PCA) and hierarchical clustering analysis indicated a clear separation of the "Mix+PSPD" group from the others. Thus, we conclude that exposure to viral fragments, associated with the mix of pollutants, induced more significant toxicity in zebrafish adults than in others.

关键词： Biomarkers COVID-19 Danio rerio Freshwater ecosystems Non-target organisms Novel coronavirus

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Closed-loop sparse channel estimation for wideband millimeter-wave full-dimensional MIMO systems

arXiv

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arXiv 2019年

作者： Liao, Anwen Gao, Zhen Wang, Hua Chen, Sheng Alouini, Mohamed-Slim Yin, Hao School of Information and Electronics Beijing Institute of Technology Beijing100081 China School of Electronics and Computer Science University of Southampton SouthamptonSO17 1BJ United Kingdom King Abdulaziz University Jeddah21589 Saudi Arabia Electrical Engineering Program Division of Physical Sciences and Engineering King Abdullah University of Science and Technology Thuwal Makkah Province Saudi Arabia Institute of China Electronic System Engineering Corporation Beijing100141 China

This paper proposes a closed-loop sparse channel estimation (CE) scheme for wideband millimeter-wave hybrid full-dimensional multiple-input multiple-output and time division duplexing based systems, which exploits the channel sparsity in both angle and delay domains. At the downlink CE stage, random transmit precoding matrix is designed at base station (BS) for channel sounding, and receive combining matrices at user devices (UDs) are designed whereby the hybrid array is visualized as a low-dimensional digital array for facilitating the multi-dimensional unitary ESPRIT (MDU-ESPRIT) algorithm to estimate respective angle-of-arrivals (AoAs). At the uplink CE stage, the estimated downlink AoAs, namely, uplink angle-of-departures (AoDs), are exploited to design multi-beam transmit precoding matrices at UDs to enable BS to estimate the uplink AoAs, i.e., the downlink AoDs, and delays of different UDs, whereby the MDU-ESPRIT algorithm is used based on the designed receive combining matrix at BS. Furthermore, a maximum likelihood approach is proposed to pair the channel parameters acquired at the two stages, and the path gains are then obtained using least squares estimator. According to spectrum estimation theory, our solution can acquire the super-resolution estimations of the AoAs/AoDs and delays of sparse multipath components with low training overhead. Simulation results verify the better CE performance and lower computational complexity of our solution over state-of-the-art approaches. Copyright © 2019, The Authors. All rights reserved.

关键词： Millimeter waves

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The Multi-modality Cell Segmentation Challenge: Towards Universal Solutions

arXiv

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arXiv 2023年

作者： Ma, Jun Xie, Ronald Ayyadhury, Shamini Ge, Cheng Gupta, Anubha Gupta, Ritu Gu, Song Zhang, Yao Lee, Gihun Kim, Joonkee Lou, Wei Li, Haofeng Upschulte, Eric Dickscheid, Timo de Almeida, José Guilherme Wang, Yixin Han, Lin Yang, Xin Labagnara, Marco Gligorovski, Vojislav Scheder, Maxime Rahi, Sahand Jamal Kempster, Carly Pollitt, Alice Espinosa, Leon Mignot, Tâm Middeke, Jan Moritz Eckardt, Jan-Niklas Li, Wangkai Li, Zhaoyang Cai, Xiaochen Bai, Bizhe Greenwald, Noah F. Van Valen, David Weisbart, Erin Cimini, Beth A. Cheung, Trevor Brück, Oscar Bader, Gary D. Wang, Bo Peter Munk Cardiac Centre University Health Network TorontoON Canada Department of Laboratory Medicine and Pathobiology University of Toronto TorontoON Canada Vector Institute TorontoON Canada Department of Molecular Genetics University of Toronto TorontoON Canada Donnelly Centre University of Toronto TorontoON Canada Princess Margaret Cancer Centre University Health Network TorontoON Canada School of Medicine and Pharmacy Ocean University of China Qingdao China New Delhi India Laboratory Oncology Dr. BRA-IRCH All India Institute of Medical Sciences New Delhi India Department of Image Reconstruction Nanjing Anke Medical Technology Co. Ltd. Nanjing China Shanghai Artificial Intelligence Laboratory Shanghai China Graduate School of AI KAIST Seoul Korea Republic of Shenzhen Research Institute of Big Data Shenzhen China Shenzhen China Helmholtz AI Research Center Jülich Jülich Germany Faculty of Mathematics and Natural Sciences Institute of Computer Science Heinrich Heine University Düsseldorf Düsseldorf Germany Hinxton United Kingdom Champalimaud Foundation - Centre for the Unknown Lisbon Portugal Department of Bioengineering Stanford University Palo AltoCA United States Tandon School of Engineering New York University New YorkNY United States School of Biomedical Engineering Health Science Center Shenzhen University Shenzhen China Lausanne Switzerland School of Biological Sciences University of Reading Reading United Kingdom Laboratoire de Chimie Bactérienne CNRS Université Aix Marseille UMR Institut de Microbiologie de la Méditerranée Marseille France Department of Internal Medicine I University Hospital Dresden Technical University Dresden Dresden Germany Else Kroener Fresenius Center for Digital Health Technical University Dresden Dresden Germany Department of Automation University of Science and Technology of China Hefei China Institute of Advanced Technology University of Science and Technology of China Hefei Chi

Cell segmentation is a critical step for quantitative single-cell analysis in microscopy images. Existing cell segmentation methods are often tailored to specific modalities or require manual interventions to specify hyper-parameters in different experimental settings. Here, we present a multi-modality cell segmentation benchmark, comprising over 1500 labeled images derived from more than 50 diverse biological experiments. The top participants developed a Transformer-based deep-learning algorithm that not only exceeds existing methods but can also be applied to diverse microscopy images across imaging platforms and tissue types without manual parameter adjustments. This benchmark and the improved algorithm offer promising avenues for more accurate and versatile cell analysis in microscopy imaging. © 2023, CC BY-NC-ND.

关键词： Deep learning

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Computation of Polyhedral Positive Invariant Sets via Linear Matrix Inequalities 16

Computation of Polyhedral Positive Invariant Sets via Linear...

引用

16th European Control Conference, ECC 2018

作者： Rubin, Daniel Nguyen, Hoai-Nam Gutman, Per-Olof Autonomous Systems Program Technion- Israel Institute of Technology Haifa Israel Control Signal and System Department IFP Energies Nouvelles Rond-point de l'Échangeur de Solaize BP3 Solaize69360 Israel Faculty of Civil and Environmental Engineering Technion- Israel Institute of Technology Haifa Israel

ISBN: (纸本)9783952426982

This paper presents a linear matrix inequality based algorithm for computation of polyhedral positive invari- ant sets for linear discrete-time systems subject to bounded state and input constraints. While the main algorithm is suitable for computation of polyhedral invariant sets of a general shape, a second algorithm specialized for symmetric sets is also presented. The results are extended to include polytopic uncertainty. Verification and demonstration of the proposed scheme is done through numerical examples. © 2018 European Control Association (EUCA).

关键词： Linear matrix inequalities

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Residential factors associated with mental health in United States Veterans, Air Force military, and Air Force employees

Indoor Environments

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Indoor Environments 2025年第2期2卷

作者： Andrew J. Hoisington Christopher A. Stamper Molly E. Penzenik Meredith Reitter Elizabeth J. Kovacs Nazanin H. Bahraini Lisa A. Brenner Department of Physical Medicine & Rehabilitation University of Colorado Anschutz Medical Campus Aurora CO USA Department of Systems Engineering & Management Air Force Institute of Technology Wright-Patterson AFB OH USA Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC) Rocky Mountain Regional VA Medical Center (RMRVAMC) Aurora CO USA Department of Surgery Division of GI Trauma and Endocrine Surgery University of Colorado Anschutz Medical Campus Aurora CO USA Alcohol Research Program University of Colorado Anschutz Medical Campus Aurora CO USA Department of Psychiatry University of Colorado Anschutz Medical Campus Aurora CO USA Veterans Health Administration Eastern Colorado Health Care System Rocky Mountain Regional Veterans Affairs Medical Center (RMRVAMC) Aurora CO USA Center for Neuroscience University of Colorado Anschutz Medical Campus Aurora CO USA

Individuals in Westernized countries spend most of their time indoors. However, exploration of residential building factors that may influence occupants’ mental health is limited in scientific literature. The purpose of this study was to explore investigator’s perceived areas of importance in residences to mental health via survey methods. To that end, we administered the Housing, Occupancy, Materials, and Environment (HOME) survey to assess factors that may influence mental health to those working in the United States (US) Air Force (n = 230) or past military members, US Veterans (n = 180). Self-reported mental health surveys were also administered to the Air Force (RAND 36-Item Short-Form) and Veterans (36-Item Short-Form survey version 2, Patient Health Questionnaire-9). The residential question that correlated to the most mental health measures for both groups was an ability to adjust indoor climate, with positive correlations. Other correlations between residential questions and health scores across the two groups were dissimilar, indicating the residential factors of importance to mental health may be variable across an individual’s life. For example, multiple positive correlations between mental health measures and nature in the older Veteran group support robust and support previous results on the importance of nature to older adults. Overall, this study provides a basis for future research and targeted clinical interventions that can quantify and positively impact the home environment and improve mental health outcomes.

关键词： AF Air Force BASE Building Assessment Survey and Evaluation HOME Housing Occupancy Materials and Environment CBE Center for the Built Environment MCS Mental Component Score PCS Physical Component Score MIRECC Rocky Mountain Mental Illness Research Education and Clinical Center US United States US-VMP United States-Veteran Microbiome Project Residences Mental Health Survey Military Indoor Environment Building Quality

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Perovskite Photovoltaic Cells: Synergistic Effect of Excited State Property and Aggregation Characteristic of Organic Semiconductor on Efficient Hole-Transportation in Perovskite Device (Adv. Funct. Mater. 5/2021)

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Advanced Functional Materials 2021年第5期31卷

作者： Bonghyun Jo Hansol Park Eswaran Kamaraj Sewook Lee Bumho Jung Sivaraman Somasundaram Gyeong G. Jeon Kyu-Tae Lee Namdoo Kim Jong H. Kim Bong-Gi Kim Tae Kyu Ahn Sanghyuk Park Hui Joon Park Department of Organic and Nano Engineering Hanyang University Seoul 04763 Korea Department of Energy Science Sungkyunkwan University Suwon 16419 Korea Human-Tech Convergence Program Hanyang University Seoul 04763 Korea Department of Chemistry Kongju National University Kongju 32588 Korea Department of Molecular Science and Technology Ajou University Suwon 16499 Korea Department of Physics Inha University Incheon 22212 Korea Department of Organic and Nano System Engineering Konkuk University Seoul 05029 Korea

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Carbon nanodots prepared from polyethylenimine for quantitation of salivary uric acid

Carbon nanodots prepared from polyethylenimine for quantitat...

引用

22nd International Conference on Miniaturized systems for Chemistry and Life Sciences, MicroTAS 2018

作者： Wu, Wei-Cheng Chen, Hsin-Yi Tiffany Lin, Shih-Chi Chen, Hsin-Ying Chen, Fu-Rong Chang, Huan-Tsung Tseng, Fan-Gang Department of Engineering and System Science National Tsing Hua University Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taiwan Research Center for Applied Sciences Academia Sinica Taiwan Department of Chemistry National Taiwan University Taiwan Department of Chemistry Chung Yuan Christian University Taiwan

ISBN: (纸本)9781510897571

Salivary uric acid is regarded as a noninvasive biomarker of metabolic syndrome and renal disorder. Although many enzyme based assays have been developed for quantitation of uric acids, most of the biological reagents are only stable for 30 days after opening even stored at 2-8 °C. To overcome this short-lasting problem, long-lasting (more than two years), easily stored and cost-effective nonenzymatic C-dots prepared from PEI through a simple hydrothermal method were developed. Experimental results reveal that the sensitivity of the PEI C-dot assay for uric acid is higher than that of reported fluorescece and enzyme based sensors. Copyright © (2018) by Chemical and Biological Microsystems Society. All rights reserved.

关键词： Nanodots

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