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Dissertations / Theses on the topic 'Frequency meter'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ballard, Valerie Jean. "Experiments with a high frequency laser slope meter." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367969.

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Passiopoulos, Georgios. "RF technology design issues for milli-meter wave wireless communications sectored antenna terminals." Thesis, King's College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271319.

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3

Kaubrys, Evaldas. "Dažnio matavimo stendo sudarymas ir tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140616_164417-07979.

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Dažnio matavimo stendo sudarymas ir tyrimas. Magistro baigiamasis darbas elektronikos inžinerijos laipsniui. Vilniaus Gedimino technikos universitetas. Vilnius, 2014, 71 p., 31 iliustr., 3 lent., 36 bibl., 6 priedai. Sukurtas ir ištirtas dažnio matavimo stendas, atskleidžiantis skaitmeninių dažnio ir periodo matavimo būdų ypatumus. Stendas pakeis šiuo metu laboratoriniuose darbuose naudojamus pasenusius prietaisus. Stendą sudaro 3 užduodantys generatoriai, dažnio sintezatorius, dažniamatis ir sąsaja su asmeniniu kompiuteriu, bendrame korpuse. Matavimo rezultatams įvertinti sukurta specializuot

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Підлісний, Ярослав Володимирович, та Yaroslav Yaroslav Pidlisnyi. "Розробка конструкції цифрового частотоміра". Bachelor's thesis, ТНТУ ім. І Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35650.

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Темою кваліфікаційної роботи є розробка конcтрукції цифрового частотоміра, розраховано його основні технічні параметри, проведено якісну та кількісну оцінку технологічності, визначено умови аксплуатації та показники собівартості розкрито призначення, область застосування та технічні вимоги до проектованого радіопристрою, здійснено вибір елементної бази, описано принцип роботи по електричній принциповій схемі, та виконано її аналіз, виконано розрахунок електричних параметрів окремих каскадів та обґрунтування виробу і опис конструкції, розраховано надійність пристрою, здійснено аналіз технологіч

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Varley, Paul C. "An analysis of rhythm systems in the United States their development and frequency of use by teachers, students, and authors; and relation to perceived learning preferences /." Diss., St. Louis, Mo. : University of Missouri--St. Louis, 2005. http://etd.umsl.edu/r881.

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6

Deshpande, Kshitija Bharat. "A Dedicated Search for Low Frequency Radio Transient Astrophysical Events using ETA." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/35666.

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Astrophysical phenomena such as self-annihilation of primordial black holes (PBHs), gamma ray bursts (GRBs), and supernovae are expected to produce single dispersed pulses detectable in the low end of the radio spectrum. Analysis of these pulses could provide valuable information about the sources, and the surrounding and intervening medium. The Eight-meter-wavelength Transient Array (ETA) is a radio telescope dedicated to the search for these pulses in an 18 MHz bandwidth centered at 38 MHz. ETA consists of 10 dual-polarized active dipoles providing an all-sky field of view. This thesis descr

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7

Томс, Богдан Євгенович, та Bohdan Toms. "Частотомір електронний". Bachelor's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35538.

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Проведено аналіз методів та засобів вимірювання частоти. Обґрунтовано вибір інтервального методу вимірювання частоти. Вимірюваний сигнал перетворюється в послідовність імпульсів і вимірюється період їх слідування. На базі проведеного аналізу розроблено схеми електричну структурну частотоміра. Розроблено схему електричну принципову та проведено розрахунок каскадів. Розроблено алгоритм роботи лічильника періоду, відображення інформації та управління частотоміром. Частотомір управляється однією кнопкою. Технічні параметри частотоміра: Максимальна вимірювана частота 30 МГц; Максимальний крок

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8

Шелельо, Андрій Андрійович, та Andrii Shelelo. "Розробка автоматизованого акустичного вимірювача переміщень механічних об’єктів". Bachelor's thesis, Тернопільський національний технічний університет ім. І. Пулюя, Факультет прикладних інформаційних технологій та електроінженерії, Кафедра автоматизації технологічних процесів і виробництв, 2021. http://elartu.tntu.edu.ua/handle/lib/35518.

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Робота виконана на кафедрі автоматизації технологічних процесів і виробництв факультету прикладних інформаційних технологій та електроінженерії Тернопільського національного технічного університету імені Івана Пулюя Міністерства освіти і науки України. Захист відбудеться «25» червня 2021 р. о 9.00 год. на засіданні екзаменаційної комісії №21 у Тернопільському національному технічному університеті імені Івана Пулюя<br>В кваліфікаційній роботі розроблено акустичний вимірювач переміщення механічних об'єктів. Основне завдання розробки полягає в тому, щоб зробити цей пристрій зручним у використан

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9

Єрмаков, М. С. "Біноміальний пристрій для вимірювання частоти". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81491.

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Пояснювальна записка містить: сторінок 81, рисунка 36, таблиць 21, джерел літератури 12. Об’єктом дослідження роботи є біноміальний пристрій для вимірювання частоти. Мета роботи розробити цифровий частотомір на основі завадостійкого лічильника біноміальних кодів, який здатен працювати в умовах з високим рівнем завад. Вимірювання частоти сигналів дуже часто використовується у виробництві. На результати вимірювання цифрових частотомірів, впливають завади які діють на внутрішні компоненти пристрою, через їх вплив може бути отримане значення яке не відповідає дійсному. Тому актуальним завданням

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10

Kukla, Zdeněk. "Vzdálené měřicí systémy a jejich praktické využití." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217602.

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This master’s thesis is dealing with remote measuring systems and their utilization in power engineering. In the first part there are described requirements on an autonomous measuring system and description of AMM and AMR systems. Communicating and data flows working on accurately defined communicating layers are also depicted in this part. The attention is devoted to the possibility of data processing and functions of devices offered by these attributes. In the following part there are described reasons for utilization of remote measuring systems in power engineering and the main advantages o

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Mogensen, Gavin. "Instrumentation for Impedance Measurements in the ELF/VLF Band for Geophysical Investigations." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/367343.

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Electromagnetic investigations of the upper layers of the earth are of particular interest to earth scientists and mining geophysics companies. This thesis outlines a novel hand-held electronic instrument that performs shallow earth surface impedance measurements to depths of 100 m or less. The device named “TranSIM” (Transient Surface Impedance Meter) operates in the ELF/VLF frequency band and utilises both remote single frequency military transmitter signals and naturally occurring sferics to perform broad band surface impedance measurements. The device incorporates high precision GPS which

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12

VENTO, OSCAR. "Research on the fluid dynamics of diesel injection systems, design of innovative closed-loop control strategies, assessment of a new flowmeter for high-pressure fluids and 1D modelling of liquid and gaseous flows." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2927462.

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13

Danisman, Batuhan. "Analysis Of Conventional Low Voltage Power Line Communication Methods For Automatic Meter Reading And The Classification And Experimental Verification Of Noise Types For Low Voltage Power Line Communication Network." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610469/index.pdf.

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In this thesis, the conventional low voltage power line communication methods is investigated in the axis of automated meter reading applications and the classification and experimental verification of common noise types for low voltage power line communication network. The investigated system provides the real time transmission of electricity consumption data recorded by electricity meters, initially to a local computer via a low voltage line through a low speed PLC (Power Line Carrier) environment and subsequently to a corporate network through a high speed data transmission medium. The auto

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14

Obr, Michal. "Sací měřič rezonance s větší měřicí cívkou." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218826.

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This master’s thesis deals with grid dip meter, its operating principle, characteristics and with measuring procedure. The thesis contains basic division of oscilators, its characteristics and operating principal. The master`s thesis contains complete design of grid dip meter with large-diameter measuring coil which is placed outside the device. Grip dip meter is made of SMD components on a one-sided printed wiring. Grip dip meter consist of transformer itself, that has two secondary windings as a supply for resonance meters and internal digital frequency meter. The device has analog panel gau

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15

Samarakoon, Kamalanath Bandara. "Use of smart meters for frequency and voltage control." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/35740/.

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A load control scheme that used frequency measurements of a smart meter for controlling domestic appliances to provide primary response was investigated. An experimental rig was developed to test and demonstrate the scheme. The amount of loads to be controlled to limit the frequency drop of the Great Britain (GB) power system to a set of minimum allowable frequencies was found. Operating speeds and the limitations of the components of the load controller in providing primary response are discussed. It is shown that if smart meters are to play any role in primary response then the speed at whic

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16

Aquilué, de Pedro Ricardo. "Power line communications for the electrical utility: physical layer design and channel modeling." Doctoral thesis, Universitat Ramon Llull, 2008. http://hdl.handle.net/10803/9138.

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El món de les comunicacions per la xarxa elèctrica (CXE) pot ser dividit en tres grans tipus: CXE en baix voltatge (CXE-BV), en mig voltatge (CXE-MV) i en alt voltatge (CXE-AV). En aquests últims anys, les CXE-BV han atret una gran expectació, ja que les seves capacitats han fet d'aquesta tecnologia una bona opció com alternativa pel bucle local d'accés i pel desplegament de xarxes d'àrea local, focalitzades aquestes últimes en l'entorn domèstic. A més, les CXE-BV inclouen un conjunt d'aplicacions de baixa velocitat orientades a l'operador, com la lectura automàtica de comptadors (LAC), distr

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17

Meier, Christoph [Verfasser]. "Multi-Frequency EDMR Studies of Light-Activated Paramagnetic Centers in µc-Si:H Thin-Film Solar Cells / Christoph Meier." Berlin : Freie Universität Berlin, 2014. http://d-nb.info/1052222307/34.

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18

Hopper, David J. "Investigation of laser frequency stabilisation using modulation transfer spectroscopy." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/16667/1/David_John_Hopper_Thesis.pdf.

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Optical frequency standards are necessary tools for accurate measurement of time and length. In practice these standards are stabilised laser systems locked to a known frequency reference. These references are typically the resonant frequencies of the atoms of an absorption medium that have been theoretically calculated to a high degree of accuracy. This thesis describes a combination of experimental and theoretical research performed on modulation transfer spectroscopy (MTS)--a technique used to frequency stabilise a laser in order to produce an accurate frequency reference--with emphasis pla

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Hopper, David J. "Investigation of laser frequency stabilisation using modulation transfer spectroscopy." Queensland University of Technology, 2008. http://eprints.qut.edu.au/16667/.

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Optical frequency standards are necessary tools for accurate measurement of time and length. In practice these standards are stabilised laser systems locked to a known frequency reference. These references are typically the resonant frequencies of the atoms of an absorption medium that have been theoretically calculated to a high degree of accuracy. This thesis describes a combination of experimental and theoretical research performed on modulation transfer spectroscopy (MTS)--a technique used to frequency stabilise a laser in order to produce an accurate frequency reference--with emphasis pla

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20

Marigliano, Giulia. "Descrittori meteo-climatici del regime di frequenza dei massimi annuali di precipitazione sub-giornaliera osservati in Emilia-Romagna." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Sulla base del modello proposto da Di Baldassarre et al. (2006), che utilizza la precipitazione media annuale (MAP) come proxy della posizione geografica, l’elaborato di Tesi si è posto come obiettivo quello di ricercare ulteriori proxy in grado di fornire una migliore previsione degli eventi estremi di precipitazione, in modo da migliorare la capacità di previsione del modello. Sono stati valutati il 95° percentile delle cumulate annue di precipitazione e il 95° percentile dei dati di precipitazione giornaliera, e per il calcolo degli L-momenti (v. Hosking e Wallis, 1993, 1997), momenti stati

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Meier, Steffen Marius [Verfasser], Uwe [Gutachter] Czarnetzki, and Horst [Gutachter] Fichtner. "Plasmadichtebestimmung mittels Dual-Frequency-Multichannel-Boxcar-THz-Time-Domain-Spektroskopie / Steffen Marius Meier ; Gutachter: Uwe Czarnetzki, Horst Fichtner ; Fakultät für Physik und Astronomie." Bochum : Ruhr-Universität Bochum, 2018. http://d-nb.info/1161942327/34.

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22

Petrgál, Filip. "Digitálně řízený audio zesilovač ve třídě D s dálkovým ovládáním." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220355.

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The contents of this thesis is design of audio power amplifier in Class D with fully digital control and remote control and is divided into two parts . The first part is devoted to the basic principles and theory of key elements of the entire amplifier. The second part consists of a complete description of the design and construction of a power amplifier, digital control with remote control, a spectrum analyzer, equalizer, preamp VU meters and complete power supply. Each proposal contains a detailed analysis of the solutions supported by simulations and software. For individual parts have been

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Singh, Shailendra. "Smart Meters Big Data : Behavioral Analytics via Incremental Data Mining and Visualization." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35244.

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The big data framework applied to smart meters offers an exception platform for data-driven forecasting and decision making to achieve sustainable energy efficiency. Buying-in consumer confidence through respecting occupants' energy consumption behavior and preferences towards improved participation in various energy programs is imperative but difficult to obtain. The key elements for understanding and predicting household energy consumption are activities occupants perform, appliances and the times that appliances are used, and inter-appliance dependencies. This information can be extracted f

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Genotte, Tim [Verfasser], Stephan [Akademischer Betreuer] Sehmisch, Wolfgang [Gutachter] Wuttke, and Thomas [Gutachter] Meyer. "Einfluss der horizontalen Ganzkörpervibration unterschiedlicher Frequenz auf den Lendenwirbelkörper der Ratte / Tim Genotte ; Gutachter: Wolfgang Wuttke, Thomas Meyer ; Betreuer: Stephan Sehmisch." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2017. http://d-nb.info/1149954272/34.

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Samek, Martin. "Měřič kvality elektrické energie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219112.

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The subject of graduation thesis is a design of line analyser according to standard EN61000-4-30 class A. The analyser is determine to be used for quality control of supplied electric power which is, during electric power transmission, affected by several disturbances. Power line analyser should measure single-phase and three-phase network parameters in LV and HV systems. Measured parameters can be shown on the full colour TFT display, stored in the device memory or sent to other devices such as PC. For communication between the device and PC the USB, Ethernet or RS485 interface are used.

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Лавриненко, Олександр Юрійович, Александр Юрьевич Лавриненко та Oleksandr Lavrynenko. "Методи підвищення ефективності семантичного кодування мовних сигналів". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/52212.

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Дисертаційна робота присвячена вирішенню актуальної науково-практичної проблеми в телекомунікаційних системах, а саме підвищення пропускної здатності каналу передачі семантичних мовних даних за рахунок ефективного їх кодування, тобто формулюється питання підвищення ефективності семантичного кодування, а саме – з якою мінімальною швидкістю можливо кодувати семантичні ознаки мовних сигналів із заданою ймовірністю безпомилкового їх розпізнавання? Саме на це питання буде дана відповідь у даному науковому дослідженні, що є актуальною науково-технічною задачею враховуючи зростаючу тенденцію д

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Li, Wan-Chen, and 李宛蓁. "Automatic resonance frequency tracking driver for ultrasonic transducers using a power meter." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/x3yvdd.

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碩士<br>義守大學<br>生物醫學工程學系<br>104<br>The Current research relates to ultrasound probes, which according to their application use different frequencies. In general, driving an ultrasound probe must find a suitable way to manually adjust the operating frequency of the probe, but it’s not convenient and accurate. However, in a suitable operating frequency, its power will become higher. Therefore, in this study, we designed a system that can adjust to a suitable and accurate operating frequency automatically. In this study, we developed a function generator using an AD5930 which can produce continuous

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Tao, Wu-Shiun, and 陶武訓. "Phase Analysis in Speed, Frequency and Distance for Elite 100-meter-sprinters." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/5ttb8y.

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碩士<br>國立體育學院<br>教練研究所<br>90<br>100-meter world records have been approaching human breaking point, and physical ability is no more critical point to win the game. Nowadays the training methods decide the championship and the agonistic achievement by using periodical technical ability. This research analyses and studies the movements by the average speed、the mean frequency and the mean distance of every 10-meter-section in the 100-meter-sprint and of the four periods. The four periods are: the first period — from 0 to 30 meters is called acceleration period; the second period — from

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Yang, Chen-Sung, and 楊陳松. "Implementation of a Portable High Frequency Ultrasound Speed Meter for Body Fluid Characterization." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/40263645115586073242.

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碩士<br>輔仁大學<br>電機工程學系<br>99<br>The main purpose of this study was to design a portable device for measuring the high frequency sound speed. In a general high frequency sound speed measured system, the sound speed was measured via a high speed A/D converter and processed by computer. However, this device only used analog components and micro-processor, and the advantages including low cost and real time display. This sound speed meter included a high frequency ultrasound pulser/receiver and a transducer with a center frequency of 42 MHz. The high frequency ultrasound pulser/receiver producted a

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Chiang, Chao-Wen, and 江朝文. "Frequency-Shaping Sliding Mode Control of High-Speed Micro-Meter-Precision Active Bearing Systems." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/79273351107189100825.

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碩士<br>國立成功大學<br>機械工程學系碩博士班<br>93<br>The Frequency-Shaping Sliding Mode Control (FSSMC) for high-speed active magnetic bearing (AMB) is synthesized. The controller is designed on the basis of the equation of motion of the magnetic bearing system, which composed the dynamics of the electrical sub-system and mechanical sub-system. By linear quadratic, optimal projection and frequency shaping methodology, FSSMC is proved to be asymptotica-lly stable as long as the uncertainties of system parameters are bounded. The main purpose of frequency-shaping design is to avoid excitation of high-order dy

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"Frequency Response Characteristics Of Respiratory Flow-meters." Master's thesis, 2013. http://hdl.handle.net/2286/R.I.20966.

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abstract: Flow measurement has always been one of the most critical processes in many industrial and clinical applications. The dynamic behavior of flow helps to define the state of a process. An industrial example would be that in an aircraft, where the rate of airflow passing the aircraft is used to determine the speed of the plane. A clinical example would be that the flow of a patient's breath which could help determine the state of the patient's lungs. This project is focused on the flow-meter that are used for airflow measurement in human lungs. In order to do these measurements, resisti

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Grant, Stephen Ian. "Medium frequency radar studies of meteors." Thesis, 2003. http://hdl.handle.net/2440/37917.

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This thesis details the application of a medium frequency (MF) Doppler radar to observations of meteoroids entering the Earth's atmosphere. MF radars make possible a greater height coverage of the meteor region (70 to 160 km) than conventional meteor radars. However this type of radar has generally been under-utilised for meteor observations, primarily due to the less than ideal radio environment associated with MF systems. This situation demanded selection of the most appropriate radar meteor techniques and in this respect a variety of techniques are evaluated for application at this freq

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Grant, Stephen Ian. "Medium frequency radar studies of meteors." 2003. http://thesis.library.adelaide.edu.au/public/adt-SUA20040224.152811.

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"July 2003." Includes bibliographical references (leaves 459-484) Electronic publication; full text available in PDF format; abstract in HTML format. Details the application of a medium frequency Doppler radar to observations of meteorites entering the Earth's atmosphere. Techniques were developed that verified system performance was to specification Electronic reproduction.[Australia] :Australian Digital Theses Program,2001. xx, 485 leaves : ill. ; 30 cm.

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Shih, Jyun-Yi, and 石俊益. "Neuro-Fuzzy Computing Based Non-Intrusive Demand Monitoring and Load Identification in Low frequency sampling Smart Meters." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/61766066324119796637.

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碩士<br>國立宜蘭大學<br>電子工程學系碩士班<br>102<br>operation status of home appliances. The proposed system automatically identifies the electrical appliance in starting status. This method takes advantage of the combination of the fuzzy theory and neural network theory for system identification. The measurement of the RMS voltage, RMS current, RMS active power and the RMS apparent power are used for feature extraction by using a simple home Smart Meter with low sampling frequency. In this study, it shows 100% recognition rate in six experiments with different hybrid starting procedure.

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Meyer, Markus [Verfasser]. "Observations of a systematically selected sample of high frequency peaked BL Lac objects with the MAGIC telescope / vorgelegt von Markus Meyer." 2008. http://d-nb.info/989706966/34.

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Jacobi, Christoph. "Zonal prevailing wind trends derived from combined low-frequency and VHF meteor radar wind measurements in the lower thermosphere over Collm (51.3°N, 13.0°E)." 2014. https://ul.qucosa.de/id/qucosa%3A16434.

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Mesopause region winds have been measured by the low-frequency (LF) method at Collm until 2008. Since 2004, meteor radar (MR) measurements have been performed also. The LF and MR data set are combined to obtain a continuous time series of monthly zonal prevailing winds from 1979 through 2013 at about 90 km altitude. It has been found that, on a monthly time scale, the difference between zonal prevailing winds measured by LF and MR are small. During the 35-yr time interval considered, the zonal winds show positive trends towards more westerly winds throughout the year except for spring. There i

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Scoular, Matthew Graham. "Spatial and temporal variability of stand-replacing fire frequency in Quetico Provincial Park, Ontario." Thesis, 2008. http://hdl.handle.net/10012/4101.

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Fire is the primary natural disturbance vital to the ecological integrity of Quetico Provincial Park, Ontario, Canada. A new provincial park planning process (i.e., Class Environmental Assessment) has required the review of Quetico’s Fire Management Plan. To support this review, large and severe (stand-replacing) Quetico fires were studied using 1966 Ontario Ministry of Natural Resources (OMNR) forest resource inventory (FRI) mapping. A Geographic Information Systems (GIS) database of the FRI was created and updated with the OMNR digital fire atlas. This database was used as a time-since-fire

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