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Design and implementation of a time-based Sun tracking solar system

AIP Conference Proceedings 2021年第1期2327卷

作者： Fahad Bin Ali Rock Chakma Ahamed Raihan Mahedi Hasan M. F. Shahriar Khan M. J. Alam Rupa Akter S. S. Mahtab 1Department of Electrical and Computer Engineering South China University of Technology China 2Department of EEE University of Science and Technology Chittagong Chittagong Bangladesh 3Department of CSE Jahangirnagar University Bangladesh 4BASc Marine Engineering AMC (Australian Maritime College) University of Tasmania Australia 5Department of EEE Feni University Trunk Road Feni Bangladesh 6Department of EEE Mymensingh Engineering College Mymensingh Bangladesh

Because of continuous decrease fuel of fossil reserve in earth, the whole world is now turning to renewable energy sources like solar, wind, geothermal, hydropower etc. In addition, it can be said that the ultimate source of energy on earth is sun with a few exceptions. And it is also the cleanest energy source without any pollution. The power value of 1.74 x 1017 watts receives by earth and the world consumes about 1.2 x 1013 watts of power per day. We are attempting to devour more energy from the sun utilizing the panel of solar. Changing of solar energy from electrical energy is expanding where the panels position of solar is situated vertically from the sun. In this way, the sun's tracking location and the panels position of solar is significant. In this paper, a new design of automatic tracking system to track the position of sun's has been focused. Though it is positioned vertically from the sun for the maximum conversion of energy in every times as move as solar panel with this system. In this tracking system, Light Depending Resistors (LDR) are applied as sensors. This system includes a microcontroller, LDR, gear motor system, and solar panels. This system is designed as dual axis tracking system. We also added a Real Time Clock and limit switch to reset the position of the solar panels at the end of the day.

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Integration of visible light communication and internet of things for future communication

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AIP Conference Proceedings 2022年第1期2519卷

作者： B. Anitha Vijayalakshmi J. Seetha P. Gandhimathi R. M. Bommi 1Department of Electronics and Communication Engineering Saveetha School of Engineering SIMATS Chennai Tamil Nadu India 2Department of Computer Science SRM Institute of Science and Technology SRMIST Ramapuram Campus Chennai Tamil Nadu India 3Kings Engineering College Department of Physics Chennai Tamil Nadu India 4Centre for System Design Chennai Institute of Technology Chennai Tamil Nadu India

The paper focuses on the need for optical communication in future eras. Spatial reprocess cannot meet the present conditions with increasing traffic demand in Radio Frequency (RF) communication. The frequency spectrum in traditional methods of wireless communication has been saturated. Visible Light Communication (VLC) and Internet-of-Things (IoT) integration will open up many indoor applications in the near future. Light Emitting Diodes (LEDs) and Photodetectors (PDs) in VLC support reliable uplink and downlink for Device-to-Device communication indoors. There is emergence of the energy-efficient variant of the VLC due to the shortage of energy budget in the upcoming era. The VLC works well in low illuminance. Energy conservation is supportedby consuming much lower energy through the usage of LEDs in *** can be achieved through the hybrid of single and multicarrier modulation. The work is about to discuss dimming techniques that support VLC in low illuminance and multicarrier modulation, which supports high data rate transmission.

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Erratum: “Transport in organic semiconductors in large electric fields: From thermal activation to field emission” [Appl. Phys. Lett. 96, 053308 (2010)]

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Applied Physics Letters 2010年第13期96卷

作者： J. H. Worne J. E. Anthony D. Natelson 1Department of Electrical and Computer Engineering Rice University 6100 Main St. Houston Texas 77005 USA 2Department of Chemistry University of Kentucky Lexington Kentucky 40506-0055 USA 3Department of Physics and Astronomy Rice University 6100 Main St. Houston Texas 77005 USA

Figure 3 in our original manuscript has an error in the legend. Both Figs. 3(a) and 3(b) had the values of VG in the legend listed from least to most negative w

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Hybrid control based on sliding mode fuzzy of DFIG power associated WECS

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AIP Conference Proceedings 2019年第1期2123卷

作者： Lakhdar Saihi Fateh Ferroudji Brahim Berbaoui Youcef Bakou Khaled Koussa Farouk Meguellati Khayra Roummani 1Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS Centre de Développement des Energies Renouvelables CDER 01000 Adrar Alegria 2Department of Electrical and Computer Engineering University of Tahri Mohamed Bechar Bp 417 Algeria

In this paper, the robust algorithm based on the coupling of sliding mode control and the fuzzy logic control is concerned to ameliorate the robustness and the performances of a variable speed wind energy conversion system (WECS) based on vertical axis wind turbine (H-darrieus) with direct attack, connected to electric power grid with a doubly fed induction generator (DFIG). The control independently of stator active and reactive powers is used by stator flux orientation strategy. The active power reference derived from turbine’s mechanical power. The hybrid fuzzy sliding mode control permits to enjoy the advantages of these two techniques in order to reduce the chattering phenomenon. The proposed approach is analysed and compared between SMO and SMOF by Simulink/Matlab environment. The simulation results show good performances and robustness of *** original version of this article supplied to AIP Publishing contained an error in the author’s name. The name originally appeared as, Khaira Roumani, but the correct name is Khayra Roummani. An updated version of this article, with the author’s name corrected, was published on January 24, 2020.

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Publisher's Note: “On direct-writing methods for electrically contacting GaAs and Ge nanowire devices” [Appl. Phys. Lett. 96, 223107 (2010)]

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Applied Physics Letters 2019年第21期115卷

作者： Guannan Chen Eric M. Gallo Jonadan Burger Bahram Nabet Adriano Cola Paola Prete Nico Lovergine Jonathan E. Spanier 1Department of Materials Science and Engineering Drexel University Philadelphia Pennsylvania 19104 USA 2Department of Electrical and Computer Engineering Drexel University Philadelphia Pennsylvania 19104 USA 3Istituto per la Microelettronica e Microsistemi (IMM) Consiglio Nazionale delle Richerche (CNR) Lecce 73100 Italy 4Department of Innovation Engineering Universitá del Salento Lecce 73100 Italy

AIP Publishing has made a change to the author byline after publication. All online versions of the article have been updated.

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Ontological representation of image processing methods for coronal hole material segmentation centered on physical restrains using multi-modal scheme

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AIP Conference Proceedings 2022年第1期2405卷

作者： R. Geetha T. Manimegalai S. Ramesh T. M. Amirthalakshmi 1Department of Information Technology Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Chennai Tamil Nadu India 2Department of Computer Science and Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Chennai Tamil Nadu India 3Department of Electronics and Communication Engineering Sri Shakthi Institute of Engineering and Technology Coimbatore-641062 Tamilnadu India 4Department of Electronics and Communicxation Engineering Rajalakshmi institute of technology Tamilnadu Chennai India

The manuscripts demonstrates the consequences on the way to advance in addition authenticate image processing techniques intended for deciding the finest physical models centered happening on solar image surveillances. This technique comprises of choosing the physical models centered proceeding on by means of coronal holes extracted from the images. Eventually, the objective is on the way to custom physical models in order to forecast geomagnetic storms. For coronal hole segmentation it is centered on physical restraints progressing a multi-modal scheme which customs segmentation maps commencing from three diversified methods in order to initialize a level-set technique which progresses the preliminary coronal hole segmentation towards the magnetic boundary. These coronal holes are clustered, mapped and validated. The suggested multi-modal segmentation technique vitally outstripped SegNet, U-net, Henney- Harvey, and FCN by giving precise boundary recognition. This suggested techniques gives 95.5% map classification precisely. An ontological representation IPCHSonto of the image processing method for Coronal Hole Segmentation have been built using protégé tool. This ontology is précised in formal languages by means of a well-defined semantics. Ontologies remain built upon a segmented understanding within a community.

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Publisher's Note: “Low Gilbert damping and high thermal stability of Ru-seeded L1-phase FePd perpendicular magnetic thin films at elevated temperatures” [Appl. Phys Lett. 117, 082405 (2020)]

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Applied Physics Letters 2020年第15期117卷

作者： Delin Zhang Dingbin Huang Ryan J. Wu Dustin Lattery Jinming Liu Xinjun Wang Daniel B. Gopman K. Andre Mkhoyan Jian-Ping Wang Xiaojia Wang 1Electrical and Computer Engineering University of Minnesota Minneapolis Minnesota 55455 USA 2Department of Mechanical Engineering University of Minnesota Minneapolis Minnesota 55455 USA 3Chemical Engineering and Materials Science University of Minnesota Minneapolis Minnesota 55455 USA 4Materials Science and Engineering Division National Institute of Standards and Technology Gaithersburg Maryland 20899 USA

This article was originally published online on 25 August 2020. A spelling error was corrected for the last author listed. The name is correct as it appears abo

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Erratum: “Ytterbium-implanted photonic resonators based on thin film lithium niobate” [J. Appl. Phys. 128, 084302 (2020)]

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Journal of Applied Physics 2022年第11期131卷

作者： Dongmin Pak Haechan An Arindam Nandi Xiaodong Jiang Yi Xuan Mahdi Hosseini 1Birck Nanotechnology Center School of Electrical and Computer Engineering Purdue University West Lafayette Indiana 47907 USA 2Department of Physics and Astronomy Purdue University West Lafayette Indiana 47907 USA 3School of Medicine IUPUI Indianapolis Indiana 46202 USA

The authors would like to add an affiliation for authors of the original version of the published article.1 Affiliation with the department of Physics and Astro

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An inventory model with linear holding cost and stock-dependent demand for non-instantaneous deteriorating items

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AIP Conference Proceedings 2016年第1期1715卷

作者： Satish Kumar A. K. Malik Abhishek Sharma S. K. Yadav Yashveer Singh 1Department of Mathematics D.N. (PG) College Meerut U.P. India 2Department of Mathematics B.K. Birla Institute of Engineering & Technology Pilani-333031 Rajasthan India 3Department of Electronics and Communication Engineering B.K. Birla Institute of Engineering & Technology Pilani-333031 Rajasthan India 4Department of Computer Science GRD Institute of Management & Technology Dehradun Uttarakhand India

The importance of inventory models with non-instantaneously deteriorating items in the management system has been discussed. The holding cost is taken as in linear function of time and demand is stock dependent. For this inventory model, we obtained the optimal order quantity and the total present value of profits. Further, optimality and sensitivity analysis of the optimal profit of the inventory model with key constraints is followed with the help of numerical example.

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Addendum: “A broadband and high-gain metamaterial microstrip antenna” [Appl. Phys. Lett. 96, 164101 (2010)]

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Applied Physics Letters 2011年第15期99卷

作者： Le-Wei Li Ya-Nan Li Tat Soon Yeo Juan R. Mosig Olivier J. F. Martin 1Institute of Electromagnetics and School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 611731 China 2Department of Electrical and Computer Engineering National University of Singapore Kent Ridge Singapore 3Institut de Transmissions Ondes et Photonique (ITOP) Swiss Federal Institute of Technology Lausanne Switzerland

In a recent paper published,1 a metamaterial microstrip antenna of broad bandwidth (at about 10 times of the conventional microstrip antenna) and high gain was

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