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Development of A Station for The Measurement of Environmental Conditions in The Unidades Tecnologicas De Santander (UTS), Using Telemetry and Database Management with Raspberry Pi

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IOP Conference Series: Materials Science and Engineering 2021年第1期1154卷

作者： A Quintero Ruiz C L Sandoval-Rodriguez A D Rincon-Quintero B E Tarazona-Romero C G Cárdenas-Arias J G Ascanio-Villabona Energy Systems Automation and Control Research Group (GISEAC) Design and materials research group (DIMAT) Electromechanical Engineering Faculty of Natural Sciences and Engineering Unidades Tecnologicas de Santander (UTS) Road No 9-82 students 680005 Bucaramanga Colombia Doctoral Program in Electronic and Communications Department of Communications Engineering University of the Basque Country UPV/EHU 48013 Bilbao Spain Doctoral Program in Energy Efficiency and Sustainability in Engineering and Architecture Department of Machines and Thermal Engines University of the Basque Country (UPV / EHU) Engineer Torres Quevedo Square 1 48013 Bilbao BI Spain Doctoral Program in Engineering of Materials and Sustainable Processes University of the Basque Country UPV/EHU 48013 Bilbao Spain

This article focuses on the development of an electronic remote data acquisition system which will have the following sensors adapted: thermometer, hygrometer and barometer. From the measurements of these will be obtained data of temperature, relative humidity, atmospheric pressure, which will be stored in the form of records in a data recorder using Raspberry Pi and through wireless communication the data will be transmitted when the software requires it to a module Central of visualization, which according to some parameters will automatically update the histories according to the defined times, or at the request of the user. It will be implemented following a process of research, planning, execution and validation. It implies the necessary information for the implementation, in the planning process the different systems to be used will be divided into 3 groups, measurement and registration system, communication system and a control system composed of the software, and then the acquisition will proceed of the equipment and accessories necessary to execute the assembly. In the execution process, the physical implementation of all the systems will be carried out and the programming of the data acquisition, communication and data storage systems will be developed.

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A bibliometric analysis of the uses of the cocoa pod shell

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IOP Conference Series: Materials Science and Engineering 2021年第1期1154卷

作者： A D Rincón-Quintero L A Del Portillo-Valdés C G Cárdenas-Arias B E Tarazona-Romero W L Rondón-Romero M A Durán-Sarmiento Design and materials research group (DIMAT) Automation and Control Energy Systems Research Group (GISEAC) Electromechanical engineering Faculty of Natural Sciences and Engineering Technological Units of Santander (UTS) Calle de los estudiantes No 9-82 680005 Bucaramanga Colombia Energy in Building research group (ENEDI) Doctoral Program in Energy Efficiency and Sustainability in Engineering and Architecture Department of Machines and Thermal Engines University of the Basque Country UPV/EHU Engineer Torres Quevedo Plaza 1 48013 Bilbao Spain Doctoral Program in Electronic and Communications Department of Communications Engineering University of the Basque Country UPV/EHU 48013 Bilbao Spain Doctoral Program in Engineering of Materials and Sustainable Processes University of the Basque Country UPV/EHU 48013 Bilbao Spain

The research explores the use of cocoa pod shell (CPS) in rural areas and accessible to the cocoa farmer, applying VOSviewer software. The results show that the production of ethanol or biochar with CPS is not feasible, the first due to its low sugar content and the second, due to the requirement of processes with high temperatures for the extraction of different chemical compounds (i.e activated carbon). On the other hand, obtaining pellets represents a viable energy potential, since the calorific value is competitive with other biomass; Also, through anaerobic digestion under the ideal conditions, it can generate 55% in biogas of the solid matter used. Additionally, the ashes produced in direct combustion or pellets rep-resent an excellent catalyst, which can be used in transesterification, for the generation of biodiesel, used with other residual oils, giving a plus in the efficient use of resources.

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Fast construction of correcting ensembles for legacy artificial intelligence systems: Algorithms and a case study

arXiv

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arXiv 2018年

作者： Tyukin, Ivan Yu. Gorban, Alexander N. Green, Stephen Prokhorov, Danil University of Leicester Department of Mathematics University Road LeicesterLE1 7RH United Kingdom Department of Automation and Control Processes St. Petersburg State University of Electrical Engineering Prof. Popova str. 5 Saint-Petersburg197376 Russia Lobachevsky State University of Nizhnij Novgorod Prospekt Gagarina 23 Nizhnij Novgorod603022 Russia Toyota R & D Ann-ArborMI United States

This paper presents a new approach for constructing simple and computationally efficient improvements of generic Artificial Intelligence (AI) systems, including Multilayer and Deep Learning neural networks. The improvements are small network ensembles added to the existing AI architectures. Theoretical foundations of the approach are based on stochastic separation theorems and the ideas of the concentration of measure. We show that, subject to mild technical assumptions on statistical properties of internal signals in the original AI system, the approach enables fast removal of the AI's errors with probability close to one on the datasets which may be exponentially large in dimension. The approach is illustrated with numerical examples and a case study of digits recognition in American Sign Language. Copyright © 2018, The Authors. All rights reserved.

关键词： Stochastic systems

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Stochastic separation theorems

arXiv

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arXiv 2017年

作者： Gorban, A.N. Tyukin, I.Y. Department of Mathematics University of Leicester LeicesterLE1 7RH United Kingdom Department of Automation and Control Processes Saint-Petersburg State Electrotechnical University Saint-Petersburg197376 Russia

The problem of non-iterative one-shot and non-destructive correction of unavoidable mistakes arises in all Artificial Intelligence applications in the real world. Its solution requires robust separation of samples with errors from samples where the system works properly. We demonstrate that in (moderately) high dimension this separation could be achieved with probability close to one by linear discriminants. Based on fundamental properties of measure concentration, we show that for M 1 - ∂, where 1 > ∂ > 0 is a given small constant. Exact values of a, b > 0 depend on the probability distribution that determines how the random M-element sets are drawn, and on the constant ∂. These stochastic separation theorems provide a new instrument for the development, analysis, and assessment of machine learning methods and algorithms in high dimension. Theoretical statements are illustrated with numerical *** Codes 68T10 Copyright © 2017, The Authors. All rights reserved.

关键词： Stochastic systems

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Dielectric cross-shaped resonator based metasurface for vortex beam generation in Mid-IR and THz wavelengths

arXiv

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arXiv 2019年

作者： Dharmavarapu, Raghu Izumi, Ken-Ichi Katayama, Ikufumi Ng, Soon Hock Vongsvivut, Jitraporn Tobin, Mark J. Kuchmizhak, Aleksandr Nishijima, Yoshiaki Bhattacharya, Shanti Juodkazis, Saulius Department of Electrical Engineering Indian Institute of Technology Madras Chennai600036 India Centre for Micro-Photonics Faculty of Science Engineering and Technology Swinburne University of Technology HawthornVIC3122 Australia Melbourne Centre for Nanofabrication ANFF 151 Wellington Road ClaytonVIC3168 Australia Physics Department Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama240-8501 Japan Infrared Microspectroscopy Beamline Australian Synchrotron ClaytonVIC3168 Australia Institute of Automation and Control Processes Far Eastern Branch Russian Academy of Sciences Vladivostok690041 Russia Far Eastern Federal University Vladivostok690090 Russia Department of Electrical and Computer Engineering Graduate School of Engineering Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama240-8501 Japan Institute of Advanced Sciences Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama240-8501 Japan School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo152-8550 Japan

Metasurfaces are engineered thin surfaces comprising two dimensional (2D) arrays of sub-wavelength spaced and sub-wavelength sized resonators. Metasurfaces can locally manipulate the amplitude, phase and polarization of light with high spatial resolution. In this study, we report numerical and experimental results of a vortex-beam-generating metasurface fabricated specifically for infrared (IR) and terahertz (THz) wavelengths. The designed metasurface consisted of a 2D array of dielectric cross-shaped resonators with spatially varying length, thereby providing desired spatially varying phase shift to the incident light. The metasurface was found to be insensitive to polarization of incident light. The dimensions of the cross-resonators were calculated using rigorous finite difference time domain (FDTD) analysis. The spectral scalability via physical scaling of meta resonators was demonstrated using two vortex generating optical elements operating at 8.8 μm (IR) and 0.78 THz (Terahertz). The vortex beam generated in the mid-IR spectral range was imaged using FTIR imaging miscroscope equipped with a focal plane array (FPA) detector. This design could be used for efficient wavefront shaping as well as various optical imaging applications in mid-IR spectral range, where polarization insensitivity is desired. Copyright © 2019, The Authors. All rights reserved.

关键词： Resonators

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Knowledge Transfer Between Artificial Intelligence Systems

arXiv

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arXiv 2017年

作者： Tyukin, Ivan Yu. Gorban, Alexander N. Sofeikov, Konstantin I. Romanenko, Ilya University of Leicester Department of Mathematics University Road LeicesterLE1 7RH United Kingdom Department of Automation and Control Processes St. Petersburg State University of Electrical Engineering Prof. Popova str. 5 Saint-Petersburg197376 Russia UnivAI Ltd 5 Park Court Pyrford Road West Byfleet KT14 6SD United Kingdom Imaging and Vision Group ARM Ltd 1 Summerpool Rd Loughborough LE11 5RD United Kingdom

We consider the fundamental question: how a legacy "student" Artificial Intelligent (AI) system could learn from a legacy "teacher" AI system or a human expert without complete re-training and, most importantly, without requiring significant computational resources. Here "learning" is understood as an ability of one system to mimic responses of the other and vice-versa. We call such learning an Artificial Intelligence knowledge transfer. We show that if internal variables of the "student" Artificial Intelligent system have the structure of an n-dimensional topological vector space and n is sufficiently high then, with probability close to one, the required knowledge transfer can be implemented by simple cascades of linear functionals. In particular, for n sufficiently large, with probability close to one, the "student" system can successfully and non-iteratively learn k n new examples from the "teacher" (or correct the same number of mistakes) at the cost of two additional inner products. The concept is illustrated with an example of knowledge transfer from a pre-trained convolutional neural network to a simple linear classifier with HOG *** Codes 68T05, 68T30 Copyright © 2017, The Authors. All rights reserved.

关键词： Knowledge management

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Corrigendum: Dielectric cross-shaped-resonator-based metasurface for vortex beam generation at mid-IR and THz wavelengths (Nanophotonics (2019) 8:7 (1263–1270) DOI: 10.1515/nanoph-2019-0112)

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Nanophotonics 2019年

作者： Dharmavarapu, Raghu Izumi, Ken-ichi Katayama, Ikufumi Ng, Soon Hock Vongsvivut, Jitraporn Tobin, Mark J. Kuchmizhak, Aleksandr Nishijima, Yoshiaki Bhattacharya, Shanti Juodkazis, Saulius Centre for NEMS and Nanophotonics (CNNP) Department of Electrical Engineering Indian Institute of Technology Madras Chennai 600036 India Centre for Micro-Photonics Faculty of Science Engineering and Technology Swinburne University of Technology Hawthorn VIC 3122 Australia Melbourne Centre for Nanofabrication ANFF 151 Wellington Road Clayton VIC 3168 Australia Physics Department Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Infrared Microspectroscopy Beamline Australian Synchrotron Clayton VIC 3168 Australia Institute of Automation and Control Processes Far Eastern Branch Russian Academy of Sciences Vladivostok 690041 Russia Far Eastern Federal University Vladivostok 690090 Russia Department of Electrical and Computer Engineering Graduate School of Engineering Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Institute of Advanced Sciences Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Tokyo Tech World Research Hub Initiative (WRHI) School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan

There was a mistake in the grant number used in the recently published paper (DOI: https://***/10.1515/ nanoph-2019-0112. Published Online: 2019-07-09). The text should read: A.K. is grateful for support via the Russian Science Foundation (grant no. 17-19-01325), and R.D. thanks the IIT Madras-Swinburne joint PhD program. © 2019 De Gruyter. All rights reserved.

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Photoluminescence spectroscopy investigation of epitaxial Si/GaSb nanocrystals/Si heterostructure

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AIP Conference Proceedings 2017年第1期1874卷

作者： Dmitry L. Goroshko Alexander V. Shevlyagin Evgeniy A. Chusovitin Sergey A. Dotsenko Anton K. Gutakovskii M. Iinuma Y. Terai Evgeniy Yu. Subbotin Nikolay G. Galkin 1Institute of Automation and Control Processes FEB RAS 5 Radio St. 690041 Vladivostok Russia 2Far Eastern Federal University 8 Sukhanova St. 690950 Vladivostok Russia 3Rzhanov Institute of Semiconductor Physics SB RAS Lavrentieva Ave.13 Novosibirsk Russia 4Kyushu Institute of Technology Department of Computer Science and Electronics 680-4 Kawazu Iizuka Fukuoka 820-8502 Japan

Two-layer heterostructure with GaSb nanocrystals formed by solid phase epitaxy and embedded into the silicon was investigated using low-temperature (10-140 K) photoluminescence and time-resolved photoluminescence spectroscopies. Two characteristic luminescence bands with a maximum of about 0.82 and 0.87 eV were observed. It was found that low-energy peak is associated with D1 dislocation-related luminescence in silicon. Analysis of the decay components together with temperature and power dependencies of the photoluminescence for the high-energy maximum revealed that emission is more likely originated from the combined D2 dislocation centers in silicon and radiative recombination in type–II band alignment Si/GaSb nanocrystals/Si heterostructure. A nonradiative recombination dominates in all temperature range studied.

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Stress-induced indirect to direct band gap transition in β-FeSi2 nanocrystals embedded in Si

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AIP Conference Proceedings 2017年第1期1874卷

作者： A. V. Shevlyagin D. L. Goroshko E. A. Chusovitin S. A. Balagan S. A. Dotsenko K. N. Galkin N. G. Galkin T. S. Shamirzaev A. K. Gutakovskii M. Iinuma Y. Terai 1Institute of Automation and Control Processes FEB RAS Radio St. 5 Vladivostok Russia 2Far Eastern Federal University School of Natural Sciences Sukhanova St. 8 Vladivostok Russia 3Rzhanov Institute of Semiconductor Physics SB RAS Lavrentieva Ave.13 Novosibirsk Russia 4Ural Federal University Mira St. 19 Yekaterinburg Russia 5Novosibirsk State University Pirogova St. 2 630090 Novosibirsk Russia 6Department of Computer Science and Electronics Kyushu Institute of Technology Iizuka Fukuoka 820-8502 Japan

Embedded in silicon β-FeSi2 nanocrystals (NCs) were grown on Si(111) by solid phase epitaxy of a thin iron film followed by Si molecular beam epitaxy. After solid phase epitaxy, a mixture of β-FeSi2 and ε-FeSi nanocrystals is formed on the surface, sometimes β and ε phases coexist inside one nanocrystal. During initial stage of Si molecular beam epitaxy all ε-FeSi transforms into β-FeSi2. β-FeSi2 nanocrystals tend to move following Si growth front. By adjusting growth condition, we manage to prevent the nanocrystals from moving and to fabricate 7-layer n-Si(111)/β-FeSi2_NCs/p+-Si silicon heterostructure with embedded β-FeSi2 NCs. An epitaxial relationship and a stress induced in the nanocrystals by silicon matrix were found to be suitable for indirect to direct band gap transition in β-FeSi2. Of the heterostructure, a n-i-p avalanche photodetector and a light-emitting diode were formed. They have shown relatively good performance: ultrabroadband photoresponse from the visible (400 nm) to short-wavelength infrared (1800 nm) ranges owing to quantum-confined Stark effect in the nanocrystals and optical emission power of up to 25 µW at 9 A/cm2 with an external quantum efficiency of 0.009% at room temperature owing to a direct fundamental transition in stressed β-FeSi2 nanocrystals.

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Surface Phases of Metals on Silicon as Material for Surface Engineering

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MRS Online Proceedings Library (OPL) 2011年第1期697卷 P5.28-P5.28页

作者： Alexander A. Saranin Sergey V. Rizhkov Dmitriy A. Tsukanov Victor G. Lifshits Andrey V. Zotov Kenjiro Oura Shuji Hasegawa Institute of Automation and Control Processes FEB RAS Vladivostok Russia Vladivostok State University Vladivostok Russia Department of Electronic Engineering Osaka University Suita Osaka 565 Japan Department of Physics University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan

To study structural and transport properties of the surface phases on silicon, a number of adsorbate/silicon systems on Si(100) and Si(111) surfaces has been investigated using scanning tunneling microscopy (STM), reflection-high-energy-electron diffraction (RHEED) and in-situ electrical resistance measurements. Results of investigations of formation and electrical properties of Si-Al, Si-Na, Si-Ag and Si-In surface structure are presented.

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