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arXiv 2024年

作者： Tanaka, Takumi S. Silverman, John D. Shimasaku, Kazuhiro Arita, Junya Akins, Hollis B. Inayoshi, Kohei Ding, Xuheng Onoue, Masafusa Liu, Zhaoxuan Casey, Caitlin M. Lambrides, Erini Kokorev, Vasily Jin, Shuowen Faisst, Andreas L. Drakos, Nicole Shen, Yue Li, Junyao Zhuang, Mingyang Fei, Qinyue Ito, Kei Ren, Wenke Matsui, Suin Ando, Makoto Hatano, Shun Fujii, Michiko S. Kartaltepe, Jeyhan S. Koekemoer, Anton M. Liu, Daizhong McCracken, Henry Joy Rhodes, Jason Robertson, Brant E. Franco, Maximilien Andika, Irham T. Cloonan, Aidan P. Fan, Xiaohui Gozaliasl, Ghassem Harish, Santosh Hayward, Christopher C. Huertas-Company, Marc Kakkad, Darshan Kinugawa, Tomoya Roy, Namrata Shuntov, Marko Talia, Margherita Toft, Sune Vijayan, Aswin P. Zhang, Yiyang The University of Tokyo Institutes for Advanced Study The University of Tokyo Kashiwa Chiba277-8583 Japan Department of Astronomy Graduate School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan UTIAS The University of Tokyo Kashiwa Chiba277-8583 Japan Center for Astrophysical Sciences Department of Physics and Astronomy Johns Hopkins University BaltimoreMD21218 United States Research Center for the Early Universe Graduate School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan Department of Astronomy The University of Texas at Austin 2515 Speedway Boulevard Stop C1400 AustinTX78712 United States Kavli Institute for Astronomy and Astrophysics Peking University Beijing100871 China School of Physics and Technology Wuhan University Wuhan430072 China Denmark NASA-Goddard Space Flight Center Code 662 GreenbeltMD20771 United States Kapteyn Astronomical Institute University of Groningen Groningen9700 AV Netherlands DTU Space Technical University of Denmark Elektrovej Building 328 Kgs. Lyngby2800 Denmark Caltech/IPAC 1200 E. California Blvd PasadenaCA91125 United States Department of Physics and Astronomy University of Hawaii Hilo 200 W Kawili St. HiloHI96720 United States Department of Astronomy University of Illinois at Urbana-Champaign UrbanaIL61801 United States National Center for Supercomputing Applications University of Illinois at Urbana-Champaign UrbanaIL61801 United States Department of Astronomy School of Physics Peking University Beijing100871 China CAS Key Laboratory for Research in Galaxies and Cosmology Department of Astronomy University of Science and Technology of China Anhui Hefei230026 China School of Astronomy and Space Science University of Science and Technology of China Hefei230026 China National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Osawa 2-21-1 Mitaka Tokyo181-8588 Japan Laboratory for Multiwave

"Little Red Dots" (LRDs) are an abundant high-redshift population newly discovered by the James Webb Space Telescope (JWST). They are characterized by a red color in the rest-frame optical band, compact morphology, and broad Balmer emission lines (FWHM >∼ 1000 km s−1) that suggest an AGN nature. Using a method of pixel-by-pixel color selection and relaxing the compactness criteria, we identify three of the first dual LRD candidates in the COSMOS-Web survey with projected separations of 0.′′2-0.′′4 (1-2 pkpc at their photometric redshifts). A comparison between existing LRD samples and mock data reveals that the projected separations of these dual LRD candidates are unlikely to result from chance projections of objects at different redshifts. In one case (CW-B5-15958), the dual LRD includes two bright sources (mF444W = 24.3 and 24.8) with characteristic V-shape spectral energy distribution (SEDs) and photometric redshifts consistent with each other. We find that CW-B5-15958 has a faint off-centered component and a companion galaxy. In the other two dual systems, the brighter LRD exhibits a V-shape SED, while the fainter LRD (mF444W>∼ 26) is undetected in both F115W and F150W. These discoveries suggest that the angular auto-correlation function (ACF) of LRDs exhibits a significant excess (∼ 3 × 102 times) on sub-arcsec (kilo-parsec) separations compared to the extrapolation of a power-law ACF of JWST-found AGNs measured over 10′′-100′′. Follow-up spectroscopic confirmation of their redshifts and the construction of a larger sample are essential to advance our understanding of the evolution of supermassive black holes and the importance of mergers in the early universe. © 2024, CC BY.

关键词： Pixels

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MedShapeNet - A Large-Scale Dataset of 3D Medical Shapes for computer Vision

arXiv

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arXiv 2023年

作者： Li, Jianning Zhou, Zongwei Yang, Jiancheng Pepe, Antonio Gsaxner, Christina Luijten, Gijs Qu, Chongyu Zhang, Tiezheng Chen, Xiaoxi Li, Wenxuan Wodzinski, Marek Friedrich, Paul Xie, Kangxian Jin, Yuan Ambigapathy, Narmada Nasca, Enrico Solak, Naida Melito, Gian Marco Vu, Viet Duc Memon, Afaque R. Schlachta, Christopher De Ribaupierre, Sandrine Patel, Rajnikant Eagleson, Roy Chen, Xiaojun Mächler, Heinrich Kirschke, Jan Stefan de la Rosa, Ezequiel Christ, Patrick Ferdinand Li, Hongwei Bran Ellis, David G. Aizenberg, Michele R. Gatidis, Sergios Küstner, Thomas Shusharina, Nadya Heller, Nicholas Andrearczyk, Vincent Depeursinge, Adrien Hatt, Mathieu Sekuboyina, Anjany Löffler, Maximilian Liebl, Hans Dorent, Reuben Vercauteren, Tom Shapey, Jonathan Kujawa, Aaron Cornelissen, Stefan Langenhuizen, Patrick Ben-Hamadou, Achraf Rekik, Ahmed Pujades, Sergi Boyer, Edmond Bolelli, Federico Grana, Costantino Lumetti, Luca Salehi, Hamidreza Ma, Jun Zhang, Yao Gharleghi, Ramtin Beier, Susann Sowmya, Arcot Garza-Villarreal, Eduardo A. Balducci, Thania Angeles-Valdez, Diego Souza, Roberto Rittner, Leticia Frayne, Richard Ji, Yuanfeng Ferrari, Vincenzo Chatterjee, Soumick Dubost, Florian Schreiber, Stefanie Mattern, Hendrik Speck, Oliver Haehn, Daniel John, Christoph Nürnberger, Andreas Pedrosa, João Ferreira, Carlos Aresta, Guilherme Cunha, António Campilho, Aurélio Suter, Yannick Garcia, Jose Lalande, Alain Vandenbossche, Vicky Van Oevelen, Aline Duquesne, Kate Mekhzoum, Hamza Vandemeulebroucke, Jef Audenaert, Emmanuel Krebs, Claudia van Leeuwen, Timo Vereecke, Evie Heidemeyer, Hauke Röhrig, Rainer Hölzle, Frank Badeli, Vahid Krieger, Kathrin Gunzer, Matthias Chen, Jianxu van Meegdenburg, Timo Dada, Amin Balzer, Miriam Fragemann, Jana Jonske, Frederic Rempe, Moritz Malorodov, Stanislav Bahnsen, Fin H. Seibold, Constantin Jaus, Alexander Marinov, Zdravko Jaeger, Paul F. Stiefelhagen, Rainer Santos, Ana Sofia Lindo, Mariana Ferreira, André Alves, Victor Kamp, Michael Abourayya, Amr Nensa, Felix Hörst, Fabian Brehmer, Alexander Hein Girardetstraße 2 Essen45131 Germany Graz University of Technology Inffeldgasse 16c Graz8010 Austria Graz Austria The Department of Computer Science Johns Hopkins University Malone Hall 3400 N Charles St BaltimoreMD21218 United States Rte Cantonale Lausanne1015 Switzerland The Department of Measurement and Electronics AGH University of Science and Technology Krakow Poland Sierre Switzerland Department of Biomedical Engineering University of Basel Hegenheimermattweg Allschwil167C CH-4123 Switzerland The Boston College 140 Commonwealth Ave Chestnut HillMA02467 United States University Hospital B7-200 339 Windermere Road LondonN6A 5A5 Canada The Department of Radiology Renji Hospital School of Medicine Shanghai Jiao Tong University Shanghai200240 China The Research Center for Connected Healthcare Big Data ZhejiangLab Zhejiang Hangzhou311121 China The Faculty of Statistics Technical University Dortmund August-Schmidt-Straße 1 Dortmund44227 Germany The Institute of Mechanics Graz University of Technology Kopernikusgasse 24/IV Graz8010 Austria The Institute of Biomedical Manufacturing and Life Quality Engineering State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai200240 China The Department of Cardiac Surgery Medical University Graz Auenbruggerplatz 29 Graz8036 Austria The Department of Diagnostic and Interventional Radiology University Hospital Giessen Justus-Liebig-University Giessen Klinikstraße 33 Giessen35392 Germany The Department of Mechanical Engineering Mehran University of Engineering and Technology Jamshoro Sindh76062 Pakistan The Institute of Medical Robotics Shanghai Jiao Tong University Shanghai China The Geschäftsführender Oberarzt Abteilung für Interventionelle und Diagnostische Neuroradiologie Universitätsklinikum der Technischen Universität München Ismaningerstr. 22 München81675 Germany icometrix Kolonel Be

Prior to the deep learning era, shape was commonly used to describe the objects. Nowadays, state-of-the-art (SOTA) algorithms in medical imaging are predominantly diverging from computer vision, where voxel grids, meshes, point clouds, and implicit surface models are used. This is seen from numerous shape-related publications in premier vision conferences as well as the growing popularity of ShapeNet (about 51,300 models) and Princeton ModelNet (127,915 models). For the medical domain, we present a large collection of anatomical shapes (e.g., bones, organs, vessels) and 3D models of surgical instrument, called MedShapeNet, created to facilitate the translation of data-driven vision algorithms to medical applications and to adapt SOTA vision algorithms to medical problems. As a unique feature, we directly model the majority of shapes on the imaging data of real patients. As of today, MedShapeNet includes 23 datasets with more than 100,000 shapes that are paired with annotations (ground truth). Our data is freely accessible via a web interface and a Python application programming interface (API) and can be used for discriminative, reconstructive, and variational benchmarks as well as various applications in virtual, augmented, or mixed reality, and 3D printing. Exemplary, we present use cases in the fields of classification of brain tumors, skull reconstructions, multi-class anatomy completion, education, and 3D printing. In future, we will extend the data and improve the interfaces. The project pages are: https://***/ and https://***/Jianningli/*** Codes 68T01 © 2023, CC BY.

关键词： Large dataset

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A new approach for the analysis of losses in calculation of high-voltage transmission networks

引用

Tehnicki Vjesnik 2018年第5期25卷 1506-1512页

作者： Petrović, Ivica Mikulić, Filip Baus, Zoran Nikolovski, Srete Galić, Dario Faculty of Electrical Engineering Computer Science and Information Technology Osijek Kneza Trpimira 2B Osijek31000 Croatia Faculty of Medicine Josipa Huttlera 4 Osijek31000 Croatia Croatian Transmission System Operator Ltd. Information Technology Osijek Osijek Croatia

By determining the losses in the power system, the aim is to determine the difference between the theoretical values and the actual losses obtained by measuring, to determine the reason for this difference, and to propose a theoretical method for selecting the calculation method that best corresponds to each type of transmission system. It is important to estimate the losses index for the expected level of loads, and thereby provide a basis for planning of system exploitation. The paper deals with the analysis of new methods used for the determination of losses in transmission network. New methods for determining losses that best suit the transmission system are presented, as well as a new method for determining losses in the transmission network, which is based on three elements. In conclusion, a comparison of individual methods tested on the real network model is shown with the aim of comparison of calculation, validation of results and evaluation of the analytical method of choice. © 2018, Strojarski Facultet. All rights reserved.

关键词： Electric power transmission

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Overview and Application Examples of Agent-Based Unified Simulation Environment

Overview and Application Examples of Agent-Based Unified Sim...

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IIAI International Conference on Advanced Applied Informatics (IIAIAAI)

作者： Takahiro Ando Ryo Fujii Kenji Hisazumi Tsunenori Mine Tsuneo Nakanishi Akira Fukuda Faculty of Information Science and Electrical Engineering Kyushu Univ. Fukuoka Japan Graduate School of Information Science and Electrical Engineering Kyushu Univ. Fukuoka Japan System LSI Research Center Kyushu Univ. Fukuoka Japan Dept. of Electronics Engineering and Computer Science Fukuoka Univ. Fukuoka Japan

ISBN: (纸本)9781538674482;9781538674475

Agent-based traffic simulation has become more and more attractive and important to develop new ITS (Intelligent Transport systems) services. So far a variety of studies and developments that combine simulators and evaluate ITS services on the combined simulators have been conducted. In this paper, we introduce a simulation environment, called Agent-based USE (Agent-based Unified Simulation Environment), and some application examples for ITS services. The Agent-based USE provides an easy-to-build simulation environment for ITS-related services. In particular, by connecting simulators with ITS services, the Agent-based USE determines behaviors to be changed on the simulators using the data of the services such as recommendation results generated by the services, tells the decisions to simulators; the Agent-based USE then obtains the data representing the current situation on the simulators and sends the data to the services as feedback so as to enable the services to generate the next recommendation. In addition, by using the Agent-based USE, it is possible to construct a co-simulation environment where simulation is performed by synchronizing some kinds of simulators and services and by sharing each simulation information. In this paper, we introduce the overview and architecture of the Agent-based USE for traffic simulation, and discuss its usefulness through some application examples.

关键词： Decision making Automobiles Roads Information science Electrical engineering Monitoring Real-time systems

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3-D Linear Reconstruction of the Experimental Fresnel Data by the GMMV Inversion Method

3-D Linear Reconstruction of the Experimental Fresnel Data b...

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International Applied Computational Electromagnetics Society Symposium (ACES)

作者： Shilong Sun Bert Jan Kooij Alexander G. Yarovoy State Key Laboratory of Complex Electromagnetic Environmental Effects on Electronics and Information System National University of Defense Technology Changsha China Faculty Electrical Engineering Mathematics and Computer Science Delft University of technology Netherlands

In this paper, the generalized multiple measurement vectors (GMMV) linear inversion method is applied to the reconstruction of the 3-D Fresnel data, provided by the Institue Fresnel (Marseille, France). The results show that the GMMV-based method can obtain good resolution along the xand yaxes, while poor resolution along the z-axis, because there were only receiving antennas distributed on the x-o-y plane, indicating that the diversity of the measurement angle is critical for the GMMV method.

关键词： Image reconstruction Imaging Inverse problems Receivers Scattering Shape Integrated circuits

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Effect of pretreatment of substrate on synthesized diamond films on Tungsten Carbide substrate by flame combustion

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Procedia Manufacturing 2017年 13卷 21-28页

作者： Takahashi, M. Kamiya, O. Pasang, T. Department of System Design Engineering Faculty of Engineering Science Akita University 1-1 Tegatagakuen-machi Akita 010-8502 Japan Mechanical Engineering School of Engineering Computer & Mathematical Science Auckland University of Technology 34 St Paul Street Auckland 1020 New Zealand

A flame combustion method enables the synthesis of diamond using acetylene-oxygen gas flame combustion in ambient air. Recently, tungsten carbide (WC) has been used as cutting tools in the machining industry. To obtain diamond films and to achieve good adhesion on the WC substrate, diamond films were synthesized by flame combustion method. However, synthesized diamond films delaminate as a result of thermal stress during cooling. In this study, as a pretreatment of the substrate to prevent the delamination, a chemical processing was performed. The WC substrate was pretreated by chemical etching to roughen the surface. The substrate was etched in an ultrasonic bath using Murakami's reagent. Another processing was performed using an acid solution of hydrogen peroxide, in order to remove cobalt from the substrate surface. The pretreatment periods were varied. Moreover, the effect of the pretreatment of the substrate on synthesized diamond films by flame combustion was investigated. © 2017 The Author(s)

关键词： Diamond films Flame combustion Pretreatment of substrate Tungsten carbide

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Optimization of Compact UWB Monopole Antenna with Tapered Connection and Linier Tapered Transformer

Optimization of Compact UWB Monopole Antenna with Tapered Co...

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International Conference on Applied Information Technology and Innovation (ICAITI)

作者： Firdaus Yulindon Meza Silvana Asrial Riswan Efendi Noor Azah Samsudin Electrical Engineering Department Politeknik Negeri Padang Padang Indonesia Faculty of Information System Universitas Andalas Padang Indonesia Faculty of Science And Technology State Islamic Sultan Syarif Kasim Riau Indonesia Faculty of Computer Science and Information Technology Universiti Tun Hussein Onn Parit Raja Batu Pahat Johor Malaysia

ISBN: (纸本)9781538667279;9781538667262

A very compact UWB monopole antenna with stable radiation pattern is presented. The antenna is constructed on FR4 with dielectric constant of 4.4 and 1.6 thickness. The antenna has a bandwidth of 4.2 - 11.2 GHz. The antenna impedance adjustment process in the UWB frequency range can be adjusted by optimizing the tapered side and linear tapered transformers. The antenna structure have the same radiator and ground plane width. A partial ground plane produces an antenna with a stable omnidirectional radiation pattern for all UWB frequency bands. The antenna gain also shows very stable with a maximum gain of 3.5 dBi.

关键词： antenna radiation patterns microwave antennas monopole antennas omnidirectional antennas permittivity ultra wideband antennas Monopole antennas Ultra wideband antennas omnidirectional antennas Microwave antennas antenna radiation patterns Dielectric constant Radiation patterns tapering Ultra wideband technologies ANTENNA antennae frequency ranges

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Smart Monitoring Temperature and Humidity of the Room Server Using Raspberry Pi and Whatsapp Notifications

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Journal of Physics: Conference Series 2019年第1期1351卷

作者： Dwi Ely Kurniawan Mohd Iqbal John Friadi Rohmat Indra Borman Rio Rinaldi Department of Informatics Engineering Politeknik Negeri Batam Indonesia Department of Informatics Engineering STIKOM Muhammadiyah Batam Indonesia Department of Information System Batam University Indonesia Faculty of Engineering & Computer Science Universitas Teknokrat Indonesia Indonesia

The server room is a room that stores data, there is company information (Data Center). Hot server room conditions can cause performance on the device and network to decrease. Therefore an admin must keep the server space stable so that the server and network performance is maintained. The temperature monitoring system can be used to monitor temperature and humidity in the server room. In addition, it provides a response to reduce the temperature if there is a temperature increase in the server room. This study uses the Internet of Thing (IoT), which is a device used by the Raspberry Pi and Wemos DHT Shield wireless sensor as a device that is able to read the temperature and humidity conditions of the room. Temperature and humidity log data is stored in the MySQL database, then displayed in a chart diagram in real time. IoT response based on predetermined temperature standards by giving notifications to users via Whatsapp Application on mobile devices.

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Generative adversarial network based on chaotic time series

arXiv

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arXiv 2019年

作者： Naruse, Makoto Matsubara, Takashi Chauvet, Nicolas Kanno, Kazutaka Yang, Tianyu Uchida, Atsushi Department of Information Physics and Computing Graduate School of Information Science and Technology University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-8656 Japan Department of Mathematical Engineering and Information Physics Faculty of Engineering University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-8656 Japan Department of Computational Science Graduate School of System Informatics Kobe University 1- 1 Rokkodai Nada Kobe Hyogo657-8501 Japan Department of Information and Computer Sciences Saitama University 255 Shimo-Okubo Sakura-ku Saitama Saitama338-8570 Japan

Generative adversarial network (GAN) is gaining increased importance in artificially constructing natural images and related functionalities wherein two networks called generator and discriminator are evolving through adversarial mechanisms. Using deep convolutional neural networks and related techniques, high-resolution, highly realistic scenes, human faces, among others have been generated. While GAN in general needs a large amount of genuine training data sets, it is noteworthy that vast amounts of pseudorandom numbers are required. Here we utilize chaotic time series generated experimentally by semiconductor lasers for the latent variables of GAN whereby the inherent nature of chaos can be reflected or transformed into the generated output data. We show that the similarity in proximity, which is a degree of robustness of the generated images with respects to a minute change in the input latent variables, is enhanced while the versatility as a whole is not severely degraded. Furthermore, we demonstrate that the surrogate chaos time series eliminates the signature of generated images that is originally observed corresponding to the negative autocorrelation inherent in the chaos sequence. We also discuss the impact of utilizing chaotic time series in retrieving images from the trained generator. Copyright © 2019, The Authors. All rights reserved.

关键词： Generative adversarial networks

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Efficient Pose Machine Based on Parameter-Sensitive Hashing 5

Efficient Pose Machine Based on Parameter-Sensitive Hashing

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2017 International Conference on Progress in Informatics and Computing(PIC)

作者： Shangchi Lin Bowen Liu Yang Wen Anum Masood Bin Sheng Ping Li Xin Liu Haoyang Yu Weiyao Lin Department of Computer Science and Engineering Shanghai Jiao Tong University Department of Mathematics and Information Technology The Education University of Hong Kong Faculty of Information Technology Macau University of Science and Technology Shenzhen Tencent Computer System Co.Ltd. Department of Electronic Engineering Shanghai Jiao Tong University

ISBN: (纸本)9781538619797;9781538619780

In this paper, we propose an efficient pose machine using Parameter-Sensitive Hashing(PSH) techniques. Based on the original pose machine, which is a sequential prediction framework, we employ the Convolutional Neural Network(CNN)to extract features. To handle the high dimensional feature vectors and conduct similarity search efficiently, we use the Parameter-Sensitive Hashing Function(PSHF) to map the feature vectors into binary values. The property of the PSHF ensures that the collisions happen when two vectors are near to each other and the search can be completed in a fractional power time. We apply our approach to the popular datasets including LSP and FLIC and make a comparison with previous methods based on a criterion of strict Percentage of Correct Parts(PCP).Experimental results reflect that our approach outperforms previous methods in accuracy.

关键词： Human pose estimation convolutional neural network parameter-sensitive hashing example-based method parameter estimation

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