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International Conference on Electronic Design (ICED)

作者： Z. Osman S. N Azemi A. A. M. Ezanuddin L. M Kamarudin School of Computer and Communication Engineering Universiti Malaysia Perlis (UniMAP) Perlis Malaysia Universiti Malaysia Perlis Arau Perlis MY Advanced Communication Engineering Centre (ACE) UniMAP Perlis Malaysia Centre of Excellence for Advanced Sensor and Technology (CEASTech) UniMAP Perlis Malaysia

ISBN: (纸本)9781509021611

In this paper, a new FSPA for new application - outdoor RF energy harvesting will proposed and designed. A new FSPA structure will joint with folded patch meander line and two pairs of slot embedded into its ground plane. A less profile, less cost and ease to fabricate the folded shorted patch antenna (FSPA) will introduced. The proposed antenna designing and performing using Computer Simulation technology (CST). Simulated results show that this antenna can obtain an impedance bandwidth of 2.48% from 839 to 860 MHz at the center frequency of 848 Mhz. The results also show that the good omnidirectional radiation pattern and stable gain over the operating frequencies.

关键词： Microstrip antennas Patch antennas Antenna radiation patterns Bandwidth Radio frequency Energy harvesting

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Distributed cognitive radio detection using Waspmote sensor for Windows based PC/Laptop

Distributed cognitive radio detection using Waspmote sensor ...

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International Conference on Electronic Design (ICED)

作者： M. N. Morshed S. Khatun L. M. Kamarudin A. Zakaria N. Azmi Embedded Computing Research Cluster School of Computer and Communication Engineering Universiti Malaysia Perlis (UniMAP) Perlis Malaysia Centre of Excellence for Advanced Sensor Technology Universiti Malaysia Perlis (UniMAP) Perlis Malaysia

All over the world, the existing spectrum is already been saturated with ever increasing demand. Every day huge number of users is joined to the existing fixed band frequency but the bandwidth is not increasing. To solve this issue the cognitive radio is the best choice. Spectrum or white space detection is an essential and very important issue in cognitive radio communication. The aim of channel detection is to find out efficiently the presence or absence of primary or licensed frequency. In this paper, we have developed a Libelium Waspmote sensor based cognitive radio detection scheme which is very easy to use, energy and cost effective. The reason for selecting this type of sensor is it supports IEEE 802.11 b/g and the Tx/Rx antenna transmission and reception sensitivity can be changed by the software. It can scan the available channel resource within its range and can store the data files. Also the security of this type of sensor supports the highest level of wireless security that is Wireless Protected Access V2 or WPA2. It is Windows based which is very common worldwide. The application runs in background without interrupting the PC/Laptop users. It is able to find efficient spectrum hole (Ideal channel) for a secondary or cognitive user to use the primary or licensed band without interrupting the primary user.

关键词： Cognitive radio IEEE 802.11 Standards sensors Throughput Portable computers Loss measurement

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A TASK-DRIVEN APPROACH TO KNOWLEDGE ACQUISITION, ANALYSIS AND REPRESENTATION FOR INTELLIGENT TRAINING SYSTEMS

A TASK-DRIVEN APPROACH TO KNOWLEDGE ACQUISITION, ANALYSIS AN...

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1992 IEEE International Conference on Systems, Man, and Cybernetics

作者： BLOOM, C BULLEMER, P CHU, R VILLANO, M Cognitive Sciences Section Honeywell Sensor and System Development Center 3660 Technology Dr. Minneapolis 55418 MN United States US WEST Advanced Technologies 4001 Discovery Drive Boulder 80303 CO United States

ISBN: (纸本)0780307208

This paper presents work in progress to develop a task driven approach to acquiring, analyzing and representing knowledge for an intelligent tutoring system (ITS). Our research premise is that using a task model approach provides direction and infrastructure for acquiring, analyzing and representing domain-specific knowledge, and enables the development of an ITS that teaches domain users to perform tasks in the right way at the right time. © 1992 IEEE.

关键词： Domain Knowledge

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Performance evaluation of ASTER cryocooler in orbit

Performance evaluation of ASTER cryocooler in orbit

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Conference on sensors, Systems and Next-Generation Satellites VI

作者： Kawada, M Akao, H Kobayashi, M Akagi, S Maekawa, T Nishihara, O Kudoh, M Fujisada, H National Institute of Advanced Industrial Science and Technology (Japan) Mitsubishi Electric Corp. (Japan) Fujitsu Ltd. (Japan) Japan Resources Observation System Organization (Japan) Sensor Information Lab. Corp. (Japan)

ISBN: (纸本)0819446637

The advanced spaceborne thermal emission and reflection radiometer (ASTER) was developed by the Ministry of Economy, Trade and Industry (METI) for installation in the EOS-AM1 spacecraft. The ASTER consists of a visible and near-infrared radiometer (VNIR), a short-wave infrared radiometer (SWIR) and a thermal infrared radiometer (TIR). Two cryocoolers are required to cool the infrared detectors for the SWIR and the TIR subsystems. Two cryocoolers have been operating in orbit for over 22000 hours. The temperature of each detector was stabilized in the allowable temperature range. Long-term data have been acquired on the cooling performance and power consumption (or motor current) under normal operating conditions for each cryocooler, and they have also been evaluated based on the detector temperature and temperature stability in this phase. In this paper, the following are described: outline of ground test results and performance of the ASTER cryocooler in orbit for over 22000 hours.

关键词： terra ASTER SWIR TIR space cryocooler cryocooler performance

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Cycling performance prediction based on cadence analysis by using multiple regression 7

Cycling performance prediction based on cadence analysis by ...

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7th International Conference on Man Machine Systems, ICoMMS 2021

作者： Sudin, Sukhairi Aziz, Azizi Naim Abdul Saad, Fathinul Syahir Ahmad Khalid, Nurul Syahirah Ibrahim, Ismail Ishaq Faculty of Electrical Engineering Technology Universiti Malaysia Perlis Kampus Pauh Putra Arau Perlis 02600 Malaysia Centre of Excellence for Advanced Sensor Technology Universiti Malaysia Perlis Kompleks Pengajian Jejawi 2 Arau Perlis 02600 Malaysia

This project examined the influence of the cadence, speed, heart rate and power towards the cycling performance by using Garmin Edge *** change in cadence will affect the speed, heart rate and power of the novice cyclist and the changes pattern will be observed through mobile devices installed with Garmin Connect application. Every results will be recorded for the next task which analysis the collected data by using machine learning algorithm which is Regression analysis. Regression analysis is a statistical method for modelling the connection between one or more independent variables and a dependent (target) variable. Regression analysis is required to answer these types of prediction problems in machine learning. Regression is a supervised learning technique that aids in the discovery of variable correlations and allows for the prediction of a continuous output variable based on one or more predictor variables. A total of forty days' worth of events were captured in the dataset. Cadence act as dependent variable, (y) while speed, heart rate and power act as independent variable, (x) in prediction of the cycling performance. Simple linear regression is defined as linear regression with only one input variable (x). When there are several input variables, the linear regression is referred to as multiple linear regression. The research uses a linear regression technique to predict cycling performance based on cadence analysis. The linear regression algorithm reveals a linear relationship between a dependent (y) variable and one or more independent (y) variables, thus the name. Because linear regression reveals a linear relationship, it determines how the value of the dependent variable changes as the value of the independent variable changes. This analysis use the Mean Squared Error (MSE) expense function for Linear Regression, which is the average of squared errors between expected and real values. Value of R squared had been recorded in this project. A low R-sq

关键词： Linear regression

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Bulk growth and analysis on luminescence, third order nonlinear optical, laser damage threshold, dielectric and thermal properties of KDP crystal doped with BTZC complex

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Materials Research Innovations 2018年第7期22卷 404-408页

作者： Rasal, Y.B. Anis, Mohd Shirsat, M.D. Hussaini, S.S. Crystal Growth Laboratory Department of Physics Milliya Arts Science and Management Science College Beed India Department of Physics Sant Gadge Baba Amravati University Amravati India RUSA Centre for Advanced Sensor Technology Dr. Babasaheb Ambedkar Marathwada University Aurangabad India

The 34 × 10 × 06 mm3 bulk single crystal of bis-thiourea zinc chloride (BTZC) doped potassium dihydrogen phosphate (KDP) material has been grown from solution evaporation growth technique. The color centered photoluminescence nature of grown crystal has been investigated in visible region of interest. The He–Ne laser assisted Z-scan analysis has been carried out to explore the promising third order nonlinear optical behavior of BTZC-KDP crystal. The origin of nonlinear refraction (n 2), the absorption coefficient (β) and susceptibility (χ3) has been discussed and their respective magnitudes have been determined using the Z-scan transmittance data. The high magnitude of laser damage threshold (GW/cm2) of grown crystal has been determined using the 1064 nm Nd:YAG laser. The influence of increasing temperature on dielectric constant and dielectric loss of pure and BTZC doped KDP crystal has been comparatively investigated. The thermal decomposition and the melting profile of BTZC doped KDP crystal has been investigated by means of simultaneous thermogravimetric and differential thermal analysis. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Nonlinear optics

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Light induced microstructure transformation in a-Si：H films

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Chinese Physics B 2007年第4期16卷 1125-1128页

作者：刘国汉丁毅张文理陈光华贺德衍邓金祥 School of Physical Science and Technology Lanzhou University Lanzhou 730000 China Institute of Sensor Technology Gansu Academy of Sciences Lanzhou 730000 China The Key Laboratory of Advanced Functional Materials Ministry of Education of China Beijing University of Technology Beijing 100022 China

A series of a-Si：H films are deposited by hot wire assisted microwave electron cyclotron resonant chemical vapour deposition （HW-MWECR-CVD）, subsequently exposed under simulated illumination for three hours. This paper studies the microstructure change during illumination by Fourier Transformation Infrared （FTIR） spectra. There are two typical transformation tendencies of microstructure after illumination. It proposes a model of light induced structural change based on the experimental results. It is found that all samples follow the same mechanism during illumination, and intrinsic structure of samples affect the total H content.

关键词： hydrogenated amorphous silicon Staebler-Wronski effect microwave electron cyclotron resonant chemical vapour deposition

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Manipulating functional groups between polyvinylidene difluoride and nanoparticles for high-performance triboelectric nanogenerator

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Nano Research 2023年第9期16卷 11855-11861页

作者： Zekun Li Lu Zhang Lihao Guo Wenwen Hu Aifang Yu Junyi Zhai CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China School of Advanced Materials and Nanotechnology Interdisciplinary Research Center of Smart SensorsXidian UniversityXi’an 712000China School of Aerospace Science and Technology Xidian UniversityXi’an 712000China

Interface functional groups play an essential role in regulating the electrical properties of bulk *** this work,we designed a novel strategy to explore a new way to enhance triboelectric performance by regulating the functional groups between nano-fillers and polymer matrix without obvious changes in the dielectric *** silica nanoparticles(SNPs)modified perfluoro-silane coupling agents(PFSCAs)with different chain lengths were added to the polyvinylidene difluoride to regulate the transferred charge density(TCD)of triboelectric nanogenerators(TENGs).When the doping concentration of perfluorodecyl modified SNPs is 2.25 wt.%,the nanocomposite film based TENG exhibits the maximum TCD of 166μC/m^(2)and power density of 3.12 W/m^(2)which are 6 times and 39 times as big as those of pure polyvinylidene difluoride(PVDF)*** charge accumulation and decay process show that interface functional groups dominate the performance of ***,a Fermi level model is proposed and why the TCD could be regulated by the concentration of nanoparticles in bulk materials is *** work provides a new concept for understanding the performance of TENG independent dielectric constant and points out a new direction for enhancing TENG’s performance,since wealthy functional groups with selectivity are applicable.

关键词： triboelectric nanogenerators functional groups surface modification interfacial regulation transferred charge density

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FET-based biomolecular sensor employing Pt reference electrode for the detection of DNA sequence

FET-based biomolecular sensor employing Pt reference electro...

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International Microprocesses and Nanotechnology Conference, MNC 2003

作者： Kim, Dong-Sun Park, Hey-Jung Jung, Hwan-Mok Shin, Jang-Kyoo Choi, Pyung Lee, Jong-Hyun Yoo, Kyutae Lim, Geunbae School of Electronic and Electrical Eng. Kyungpook National Univ. 1370 Sangyuk-dong buk-gu Daegu702-701 Korea Republic of Dept. of Sensor Eng. Kyungpook National Univ. 1370 Sangyuk-dong buk-gu Daegu702-701 Korea Republic of Bio-Chip Project Team Samsung Advanced Institute of Technology Korea Republic of

In this paper, we have fabricated an PMOSFET type biomolecular sensor employing Pt electrode with an improved performance for the detection of DNA sequence based on CMOS technology and investigated its electrical char... 详细信息

ISBN: (纸本)4891140402

关键词： DNA sequences

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Volcano-structured Double-gated Field Emitter Arrays;Emission Characteristics and Applications 24

Volcano-structured Double-gated Field Emitter Arrays;Emissio...

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24th International Vacuum Electronics Conference, IVEC 2023

作者： Mimura, Hidenori Neo, Yoichiro Nagao, Masayoshi Tsutaki, Kunio Kajikawa, Yoshihiro Munehiro, Takatsugu Research Institute of Electronics Shizuoka Uiversity Hamamatsu Japan National Institute of Advanced Industrial Science and Technology Tsukuba Japan NEC Network and Sensor Systems Ltd. Microwave Tubes Division Sagamihara Japan

ISBN: (纸本)9781665473217

Volcano-structured double-gated field emitter arrays (VDG-FEAs) have realized both highly focusing electron beam and high emission current. The prototype image sensor using Spindt-type VDG-FEA has obtained a reproduced image with uniform image intensity without magnetic focusing. we describe a compact image sensor using the VDG-FEA. We are developing a 300 GHz band traveling wave tube (TWT) using a thermal cathode. We believe that the VDG-FEA is a promising cathode for the 300 GHz TWT in the future. © 2023 IEEE.

关键词： Field emission

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