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1
Lundberg, Eric J. „The Automated Laser Position System - ALPS“. Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44123.
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The construction industry needs an accurate real-time positioning system. Such a system, if successfully implemented, would lead to significant increases in the performance of many construction operations. This thesis presents the Automated Laser Position System (ALPS) for accurate real-time positioning. ALPS is a spin-off of the Automated Position And Control System (APAC) research, sponsored by the National Science Foundation under grant DMC-8717476.
The ALPS concept has three primary components: a rotation laser, laser detectors and a central processing unit. ALPS generates both horizontal (X,Y) and vertical (Z) position information. It is mathematically predicted that ALPS could produce accuracies of ± 17 mm in the horizontal and ± 5,9 mm in the vertical, at a range of 400 m. Position measurements would be updated 50 times a second.
Master of Science
2
Mullet, Kathy K. „The effects of shoulder position on four sleeve/bodice structures“. Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/37231.
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3
Feuerstein, Martin J. „Performance evaluation of a spread spectrum local area position location system“. Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39073.
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The primary objective of this research was the investigation of position location technologies suitable for use in construction automation applications. Ground based radio frequency spread spectrum techniques were chosen due to their relatively low cost, ease of implementation, and all weather capability. Two types of spectral spreading were examined: frequency hopping and direct sequence. The error performance capabilities of spread spectrum position location systems were studied systematically through theoretical analysis, a series of experimental tests, and by the development of a computer simulation package. A small scale experimental test was conducted as a proof of concept and a test of the prototype hardware. The small scale test was also used to estimate parameters of the computer simulation program. Later, a full scale test was conducted at a site approximately the size of a typical construction project. Computer simulations of the system performance were found to be in good agreement with the experimental results.
The position error performance of a frequency hopping phase Ineasurenlent type position location system was determined using theoretical, simulation, and experimental means. The primary limitation to position accuracy was found to be propagation channel induced errors. By employing nonlinear filtering methods combined with robust estimation techniques, position error distributions which exceed the performance of classic least squared error methods have been achieved. The relationship between vertical and horizontal errors for practical systems has been determined. Computer simulations have provided estimates of the position accuracy of a direct sequence system which combines time domain techniques for ambiguity resolution determination and phase measurement for fine position. For the first time, phase error distributions of hyperbolic multilateration systems in multipath environments have been studied. The computer simulation tools which have been developed and verified experimentally can be used to analyze the performance of future radio position location systems.Ph. D.
4
Purdy, Daniel S. „An application of the hyperbolic navigation radio system for automated position and control“. Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/46061.
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As automation in the construction site of the future becomes a reality, position location systems are necessary to provide real-time data to an operator. This thesis addresses problems associated with development of a real time automated position location system using a method similar to hyperbolic navigation methods. The Automated Position and Control (APAC) project is a joint effort between the Civil and Electrical Engineering departments at Virginia Polytechnic and State University and Bechtel Eastern Power Corporation.
Master of Science
5
Pourshirazi, Aida. „An Application for the Detection of Signal Strength for ESP8266 Position“. TopSCHOLAR®, 2017. https://digitalcommons.wku.edu/theses/2043.
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Sinkholes are hazardous to buildings and their occupants, so a sensing device that can monitor underground changes is vital. Void Technology, developed in the Research and Development Center at Western Kentucky University, is creating a device that can improve monitoring for any movement underground. This device, created by Void Technology, is equipped with ESP8266, which is a Wi-Fi module that can send its information to the router in a wireless network. The focus of this thesis is on designing and developing an IOS framework application to show the signal strength capabilities in different buildings to find the optimum placement of the Void Technology devices. Each building, based on various construction materials, had different attenuations that could cause signal loss from the application to the ESP82266. The optimum place was found with this designed application. From this test experiment, it can be concluded that the application can show the signal strength based dBm. Thus, this new application is cost-effective as well as user friendly and which can help both the installer and homeowner to find the best position for installing The Void Technology with optimum signal strength.
6
Grinberg, Yanina. „FASCICULAR PERINEURIUM THICKNESS, SIZE, AND POSITION AFFECT MODEL PREDICTIONS OF NEURAL EXCITATION“. Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1207083143.
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7
Meyer, Steven J. „GPS Receiver Testing on the Supersonic Naval Ordnance Research Track (SNORT)“. International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/609808.
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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, NevadaThere is an interest in using Global Positioning System (GPS) receivers to find: Time Space Position Information (TSPI), miss distances between a missile and target, and using the data real time as an independent tracking aid for range safety. Ashtech, Inc. has several standalone GPS receivers they believe can work at high g levels. This paper investigates how the Ashtech GPS receivers work under high g loading in one axis. The telemetry system used to collect data from the receivers and the reconstruction of the data will also be discussed. The test was done at SNORT (Supersonic Naval Ordnance Research Track) located at NAWS, China Lake, CA. The g level obtained was about +23 g’s with a deceleration of -15 g’s. The velocity reached was about Mach 2.0. A summary of the errors is included.
8
Bojnell, Kim, und Mattias Feltendal. „Development of a flexible stand to position a microwave transmitter : A complimentary tool to test equipment for breast cancer research“. Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-55146.
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Breast cancer is the most common form of cancer among women, this type of cancer is diagnosed in around 9000 women every year in Sweden. The most common studies to find breast cancer is through mammography where the breast tissue is compressed and exposed by radiation. Not only does the technique expose the breast tissue for radiation, but it can also be very uncomfortable. There is research on a new kind of scanning where use of microwaves reduces the uncomfortable situation. The MDH research team that are working with this technology needs help to position a transmitter of microwaves to test their equipment. The purpose of this paper is to discover a way to mechanically position a transmitter so that it can be moved along a breast model. The investigation will be made through a product development process in order to review the research question: RQ: “How can a product be designed to position and adjust a microwave transmitter to various locations in order to help testing of cancer research equipment?” By using an agile working methodology in combination with a Design thinking process this thesis includes several sprints that involved continues improvement and feedback from the research team. The first sprint was mostly to discover and experiment on new design ideas as well as control if any of them could work. It resulted in need of measurement changes and redesigning. The second sprint involved measurement corrections. The model itself had the reasonable measurements and the functions worked as expected. However, some of the functions needed to be improved as well as a problem with clearing of the wires to the transmitter itself. The third sprint included changes where more freedom was given and more clearance was made for the wires, but this design turned out to be unpredictable. The fourth sprint included a completely new design to stabilizing the prototype as a result from the researchers’ feedback. To answer the research question, the final design resulted in a 3D printed stand designed to move the transmitter along x-axis as well as rotate around y-axis to adjust to different breast diameters and forms. The stand also includes a rack and pinion design that makes it possible to adjust to different breast lengths. Lastly, the stand makes it possible to gradually move the transmitter around the breast model. However, the final design does not only answer the research question it also fulfils stability and functionality requirements set by the research team. This clarifies why the first iterations needed redesigning. Therefore, the stand is ready for preliminary tests of the researcher’s equipment. To conclude, there are many different design solutions that can answer the research question. However, the design requires stability which reduce the number of design solutions.
9
Wallby, Thomas. „Lika för alla? : Social position och etnicitet som determinanter för amning, föräldrars rökvanor och kontakter med BVC“. Doctoral thesis, Uppsala universitet, Pediatrik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-170037.
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Child Health Services (CHS) in Sweden are offered free of charge to all Swedish parents with children 0-5 years of age. The regular service schedule includes home visits, health examinations, vaccinations and participation in parenting groups. The CHS should pay extra attention to disadvantaged families. The aim of this thesis was to investigate to what extent the CHS reaches groups of families with special needs, e.g. immigrant families, low income families, young and single mothers, with universal or selective measures, as well as to investigate the variation of two determinants of child health, second hand smoke and breastfeeding, in these groups of families. The thesis also aimed at investigating validity of data in the county CHS quality database (Basta). The thesis is based on data from Basta together with several national registers. The CHS equally reached all families with infants with the universal program except for participation in parenting group. Foreign born, young, single and low-income mothers had lower participation rates. Smoking rates were lower in foreign-born than in Swedish-born mothers and higher for foreign-born than in Swedish-born fathers. Smoking was more common among single and low income parents and young mothers. Young and single mothers had lower breastfeeding rates at 6 months. At 12 months the breastfeeding rates were higher among foreign-born mothers. The validity test of data in the Basta database showed sensitivity values for immunizations, breastfeeding and smoking at 90-100 % and for any home visit, participation in parenting group at any time, a minimum number of 6 visits at the Child Health Centre (CHC) and a minimum number of 11 visits at the CHC at 88 - 96 %. The sensitivity value for the exact match of number of CHC visits (+/- 3 visits) was 88 %. Conclusions: The universal programme was equally distributed in different immigrant and socio-demographic populations. However, the results did not indicate equality according to the assumption that some families need more input than others in order to achieve equity of outcome. Individual data routinely collected from CHS records to a quality database provides data of good quality that can be used for both quality surveillance and research.
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Kujiraoka, Scott R., und Russell G. Fielder. „USING COOPERATIVE RESEARCH AND DEVELOPMENT AGREEMENTS (CRADA) TO REDUCE THE TRANSITION TO PRODUCTION RISK OF A MISSILE TELEMETRY SECTION“. International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604581.
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ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, NevadaThe Joint Advanced Missile Instrumentation (JAMI) Program’s main thrust has been the integration of Global Positioning System (GPS) tracking technology into the Department of Defense (DoD) Missile Test Ranges. This technology could be used for Time, Space, Position, and Information (TSPI), Flight Termination (FTS), or End Game Scoring purposes. However the Program’s main goal is to develop Proof-of-Concept components only. Transitioning Missile technology developed by the Government to Private Industry, so that it can be economically mass produced, has been quite a challenge. Traditionally, private industry has had to bid on proposals without much detailed information on how these components have been designed and fabricated. These unknown risks, Non-Recurring Engineering (NRE) and Missile Flight Qualification costs, routinely have significantly increased the price of these procurement contracts. In order so that the Fleet can economically utilize these components in the field, Cooperative Research and Development Agreements (CRADA) between the Government and Private Industry have been used to successfully transition Government developed technology to mass production. They can eliminate the NRE and flight qualification costs to provide for an economical and low risk method of providing the Fleet with the latest advances in GPS Tracking Technology. This paper will discuss how this is currently being accomplished in the development of a conformal wraparound instrumentation antenna for a five-inch diameter Missile Telemetry (TM) Section.
11
Fatollahzadeh, Kianoush. „A laboratory vehicle mock-up research work on truck driver's seat position and posture : a mathematical model approach with respect to anthropometry, body landmark locations and discomfort /“. Stockholm : Department of Industrial Economics and Management, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4028.
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12
Sandlund, Jonas. „Position-matching and goal-directed reaching acuity of the upper limb in chronic neck pain : associations to self-rated characteristics“. Doctoral thesis, Umeå : Gävle : Univ. ; Centre for Musculoskeletal Research, University of Gävle, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1635.
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13
Fatollahzadeh, Kianoush. „A laboratory vehicle mock-up research work on truck driver’s selected seat position and posture : A mathematical model approach with respect to anthropometry, body landmark locations and discomfort“. Doctoral thesis, KTH, Industriell ekonomi och organisation (Inst.), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4028.
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Professional truck drivers are highly exposed to fatigue and work related injuries. Truck drivers are common victims of musculoskeletal disorders, frequently suffering from pain symptoms particularly in the neck, shoulder and lower back. This situation is believed to be a contributor to the high absenteeism in this job category. A high percentage of this problem is due to the adoption of an unhealthy driving posture resulting from inappropriate seat design. This incorrect and poor design is owing to the insufficient and obsolete anthropometrical data which has been used for decades for arranging and positioning components in the driver environment. The main objective of the present study was to create and construct a mathematical model which clarifies and predicts the drivers’ comfortable sitting posture and position. It was hypothesized that the length and height characteristics of some body segments as well as the body weight and waist circumference of the driver have a great impact on the selection of a specific sitting posture. The steering wheel positions as well as the pedal/floor locations were hypothesized to be highly correlated to the driver’s selected posture and the corresponding comfort. The effect of the seat position on posture selection and related comfort assessments constituted the other hypothesis of the study which received extra attention. A laboratory experiment on a Scania truck cab mock-up was conducted. The seat track travel along a vertical as well as horizontal forward-backward path was obtained by mounting the seat on the motorized rigid frame which allowed unrestricted vertical and fore-aft travel. The seat cushion angle and backrest angle were adjusted by pivoting the entire seat and backrest around a lateral axis and independently. The pedal components were mounted on a motorized platform, thus allowing unrestricted fore-aft and height travel without any changes in the pedal angles. The steering wheel was mounted on the instrument panel by two independent pneumatic axes which allowed a wide range of adjustments including tilting and moving along the sagittal plane for adjusting the height and distance. The test plan called for 55 international highly experienced heavy truck drivers. The drivers were recruited to span a large range of body weight and stature, in particular to ensure adequate representation of both the extreme as well as the normal group of drivers. The drivers filled in a general information questionnaire before undergoing the anthropometrical measurements and thereafter the test trials. The experiment contained a subset of test conditions with five different trials using random selection sampling procedure. Drivers were asked to adjust the components in a wide range of trajectory according to a written protocol. A sparse set of threedimensional body landmark locations and the corresponding comfort assessments were recorded. As the main part of the result, the mathematical models using multiple regression analyses on selected body landmarks as well as anthropometrical measures were developed which proposed a linear correlation between parameters. The differences between the observed data and the corresponding predicted data using the model were found to be minimal and almost dispensable. Additionally, the drivers preferred to sit in the rearmost position and at a rather high level relative to the rest of the available and adjustable area. Considering the normal adjustable seat area of the cab, only a very small part of the observed Hpoint data lies within this area while a large remaining amount of data lies outside of it. Moreover, the difference between the observation (plotted H-point data) and the neutral H-point was found to be significant. Furthermore, and since some of the data lies almost on the border of the adjustable area, it may indicate a reasonable tendency for even more seat adjustment in the backward direction. A conceptual model consisting of four different parameters was developed and presented in the end. These parameters of the model suggest being as key factors which play a central role on process of decision making regarding the selection of a desirable sitting posture. Any eventual modifications and adjustments for elimination or minimizing discrepancies, biases or obscured factors affecting the quality of the mathematical model would be a case for future study. The investigation of a complete assessment of comfort should be supplemented with an analysis of how many truck drivers are satisfied with the comfort in the end.QC 20100824
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Brink, Yolandi. „Sitting posture : a predictive factor for upper quadrant musculoskeletal pain in computing high school students“. Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71876.
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Thesis (PhD)--Stellenbosch University, 2012.Includes bibliography
ENGLISH ABSTRACT: Introduction: The increased prevalence of adolescent upper quadrant musculoskeletal pain (UQMP) is becoming a great concern to health professionals. The risk factors associated with adolescent UQMP are complex and multifactorial, including, among others sitting as a physical risk factor. However, no evidence exists to support sitting postural angles as a potential predictive factor for adolescent UQMP in computing high school students. Thus, the current project aimed to describe the three-dimensional (3D) sitting postural angles of computing South African high school students in a real-life setting, using a well-tested and documented posture measurement instrument. Methodology: This research project is comprised of seven related studies. Part I of the dissertation presents a systematic review describing the reliability and validity testing of posture measurement instruments. This is followed by three primary correlation and repeated measures observational studies aimed at ascertaining the reliability and validity of a newly developed 3D Posture Analysis Tool (3D-PAT) in the measurement of nine sitting postural angles of computing high school students. Part II of the dissertation presents a systematic review, that evaluates the latest published research evidence of whether sitting is related to UQMP, and, if so, to identify the elements of sitting that significantly contribute to UQMP. This review is followed by a description of a cohort study, with a prospective period of one year. The 3D-PAT was implemented in a clinical research setting in order to measure the 3D sitting posture of a cohort of asymptomatic computing high school students and in order to assess the outcome, seated-related UQMP, prospectively. The prospective study design enabled the research project to contribute to an understanding of any causative relationship between the exposure (sitting postural angles) and the outcome (seated-related UQMP) in a subgroup of adolescents (computer users). Results: After the first phase of psychometric testing of the 3D-PAT using high school students, the findings indicated that the instrument required modifications prior to further psychometric testing. The second phase of testing revealed that the 3D-PAT compared very well with the reference standard for measurement of the X-, Y- and Z-coordinates of the reflective markers on a mannequin. The findings from the phase three study, again using high school students, indicated that the 3D-PAT compared very well with the reference standard and justified its use for the measurement of six sitting postural angles of the upper quadrant in computing high school students. For the cohort study, a 60% response rate for participation was achieved at baseline, with 98% of the students participating at six-month and 80% at one-year follow up. Of the students, 33.5% complained of seated-related UQMP during the follow-up period. Exposure to increased head flexion (>80°) (ρ=0.0001) and the combination of increased head flexion and decreased cranio-cervical angles (ρ=0.007) were significant predictors of seated-related UQMP for those computing high school students complaining of pain greater than the 90th percentile for such. Conclusion: The project described in the current dissertation is the first research project to assess sitting postural angles in asymptomatic high school students, while they worked on desktop computers in a school computer classroom and to assess UQMP prospectively. The research project reports a causal relationship between increased head flexion and seated-related UQMP as increased head flexion was found to be a predictor of seated-related UQMP developing within six to 12 months for computing high school students with a pain score equal or greater than the 90th percentile for pain. The research project emphasises that further research is warranted to investigate the causal pathway between sitting posture and adolescents’ UQMP.
AFRIKAANSE OPSOMMING: Inleiding: Die stygende voorkoms van boonste-kwadrant muskuloskeletale-pyn (BKMP) onder adolessente is besig om ’n groot bron van kommer vir professionele gesondheidswerkers te word. Die risiko-faktore waarmee adolessente BKMP gepaard gaan, is kompleks en multifaktories. Dit sluit onder andere sit as ’n fisiese risiko-faktor in. Daar is egter nog geen bewyse om sittende posturale hoeke as potensiële voorspeller van adolessente BKMP te ondersteun nie. Dus beoog hierdie projek om die drie-dimensionele (3D) sittende posturale hoeke van Suid-Afrikaanse hoërskoolleerders wat ook rekenaargebruikers is, in ’n werklike omgewing te beskryf, deur gebruik te maak van ’n instrument wat postuur meet en wat goed getoets en gedokumenteerd is. Metodiek: Hierdie navorsingsprojek is saamgestel uit sewe studies. Gedeelte I van die proefskrif bied ’n sistematiese oorsig van betroubaarheids- en geldigheidstoetsing van instrumente wat postuur meet. Dit word gevolg deur drie primêre korrelasie studies en studies vir die waarneming van herhaalde meting wat die betroubaarheid en geldigheid van n nuut-ontwikkelde 3D instrument vir posturale analise (3D-PAT) bepaal, wanneer nege sittende posturale hoeke van hoërskoolleerders wat rekenaars gebruik, gemeet word. Gedeelte II van die proefskrif bied ’n sistematiese oorsig van die jongste gepubliseerde navorsing om te evalueer of daar bewyse is dat sit verband hou met BKMP, en, indien wel, om die elemente van sit wat betekenisvol bydra tot BKMP, te identifiseer. Die sistematiese oorsig word deur ’n beskrywing van ‘n jaarlange kohortstudie gevolg. Die 3D-PAT is gebruik in ’n kliniese-navorsingsraamwerk om die 3D-sitpostuur van ’n kohort simptoomvrye hoërskoolleerders wat rekenaargebruikers is, te meet en sitverwante BKMP as uitkoms in die vooruitsig te stel. Die studie ontwerp het dit vir die navorsingsprojek moontlik gemaak om ’n insiggewende bydrae te lewer tot begrip vir enige oorsaaklikheidsverwantskap tussen die blootstelling (sittende posturale hoeke) en die uitkoms (sitverwante BKMP) in ’n subgroup van adolessente (rekenaargebruikers). Resultate: Na afloop van die eerste psigometriese toesting van die 3D-PAT, waarin hoërskoolleerders gebruik is, het bevindings daarop gedui dat die instrument verander moet word voordat toetsing kan voortgaan. Die tweede fase van toetsing het getoon dat die 3D-PAT baie goed vergelyk met die verwysingstandaard vir die meet van die X-, Y- en Z-koördinate van die reflektiewe merkers op ’n mannekyn. Die bevindings van die derde fase van die studie, waartydens hoërskoolleerders weer gebruik is, het aangedui dat die 3D-PAT baie goed vergelyk met die verwysingstandaard. Dit het die gebruik van die instrument om ses sittende posturale hoeke van die boonste kwadrant van hoërskoolleerders wat rekenaars gebruik te meet, bevestig. Die kohortstudie het ’n 60%-reaksiesyfer vir deelname behaal tydens die basislynmetings, waarvan 98% leerders deelgeneem het aan die sesmaande-opvolgmetings en 80% aan die eenjaaropvolgmetings. ’n Totaal van 33.5% van die leerders het gekla van sitverwante BKMP gedurende die eenjaar opvolgperiode. Blootstelling aan ’n vergrootte kopfleksie-hoek (>80°) (ρ = 0.0001) en die kombinasie van ’n vergrootte kopfleksie- en verminderde kranio-servikale hoek (ρ = 0.007) was betekenisvolle voorspellers van sitverwante BKMP vir die hoërskoolleerders wat rekenaars gebruik en kla van groter pyn as die 90ste persentiel daarvan. Gevolgtrekking: Hierdie projek is die eerste navorsing wat sittende posturale hoeke van simptoomvrye hoërskoolleerders wat op tafelrekenaars in die skool se rekenaarklaskamer werk, meet en BKMP voorspel. Die navorsingsprojek rapporteer ‘n oorsaaklikheidsverwantskap tussen ‘n vergrootte kopfleksie-hoek en sitverwante BKMP omdat vergrootte kopfleksie ‘n voorspeller is van sitverwante BKMP wat binne ses tot 12 maande by hoërskoolleerders wat rekenaars gebruik, met ‘n pyntelling gelyk of groter as die 90ste persentiel van pyn, ontwikkel. Die navorsingsprojek beklemtoon dat verdere navorsing om die oorsaaklikheidsroete tussen sitpostuur en adolessente BKMP te ondersoek, geregverdig is.
Medical Research Council of South Africa
National Research Fund
Division of Research Development and Support of Stellenbosch University
15
Šrám, Kristián. „Manifestace diskursivních hierarchií ve spotřebě a jejich proměna v kontextu finanční krize“. Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-201745.
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This thesis seeks to analyze how social position is negotiated by particular consumption practices. Thesis is theoretically based upon social-constructivist claims that reality is a social construct that comprises of continuously negotiated meanings. That implies that observed phenomena, such as among others consumption and social position, are seen as constituted by the cultural and symbolic dimensions of society. Methodological basis of the thesis is qualitative research. In the context of consumer behavior research I follow the research stream of consumer culture theory. Key findings of the study are that discourses on consumption are partially determined by social position while higher classes are comparatively more reflexive in their interpretations of consumption. However, social boundaries are not strictly given which creates a space for negotiating one`s social position. That might be accomplished by reinterpretation of social position. Prominent strategies of such reinterpretations were defined by discourses of neoliberalism and egalitarism. Another option consists of transgressing the economic boundaries by utilizing cultural capital. However, in the Czech society there has not yet been developed a clear consensus on what cultural capital consists of - that creates even more potential for negotiating one`s own social position.
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HAN, SHAN-HSUN, und 韓繕遜. „The research on intelligent human position detection“. Thesis, 2019. http://ndltd.ncl.edu.tw/handle/pkse37.
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碩士國立勤益科技大學
電子工程系
107
This article uses PIR sensors and ultrasonic sensors to detect the position of the human body and objects. The PIR sensor can block most of the infrared light through the sensor's Lens. Because Lens is coated with a multi-layer film, and the human body temperature is about 36.5 degrees, this coating only allows infrared rays near the wavelength of 36.5 degrees to pass,. Therefore, it is suitably used together as a detection of the human body. In this paper, the Arduino microcontroller will send a 10uS TTL pulse signal to trigger the ultrasonic sensor. After the ultrasonic sensor is ready to send,it will send eight 40KHz square waves to the object to be detected, and then the trip time from signals emitted to signals received is calculated and converted into distances. This paper uses the coordinates to determine the position of the human body on the plane and control the stepper motor to obtain the angle. The distance coordinates are obtained by the super-wave to complete the position in the space where the human body is located. In practice, the stepper motor controls the rotation angle of 5.625 degrees. The starting position of the stepping motor rotation angle is set to 0 degrees, and the planned angles are forward rotation and reverse rotation. Finally, the LCD screen is used to display the angle and distance when the human body or objects are detected, and then indicates that the motor displays a "+" angle when it rotates forward and "-" when it rotates reversed. When the system detects the human body, the "H" font will appear behind the distance, and no H indicates that the object is detected.
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Lin, Jiann-yuan, und 林健元. „Research for the Impact of Eight Geographic Positions in the Bedroom of Lucky Position“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/4269gt.
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碩士大葉大學
設計暨藝術學院碩士在職專班
104
The geography of Feng-shui theory is derived from the relationship between geographic location and the building space. Geography side of the building is a very important part around the physical environment, because of the environment we lived is influenced the sun greatly. Due to the rotation and the revolution of the earth, the sunshine region and the orientation are different. The relationship of nature is much closed between the micro-climate in our living space. So it is really worth discussing about the geographical orientation of living space. In this study, according to the east and west of four dwellings, east and west of four lives from the theories of Ba-Zhai position.We explored Wen-chang, blossom, Officer-paul, and health by case studies, and then collected in connection with the effect of eight positions in the bedroom space for living space with interview records. We considered that Feng-Shui geography side is physical environment in the scientific argument today. In this research, hoping to bring some reference and assist to some people in related fields or designers in the planning process.
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Ma, Chin-Hung, und 馬景宏. „Car-Based Channel Model Research for Global Position System“. Thesis, 2007. http://ndltd.ncl.edu.tw/handle/63418255913167393435.
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碩士中原大學
電機工程研究所
95
Abstract This thesis investigates the car-based channel model to evaluate the wireless performance for handheld device in the open space by adding a factor from the “Scenario Signal Strength” method. Traditionally using the test equipment with antenna and “DUT(Device Under Test)” to find out the value of the signal strength is the most popular method to find out the DUT performance in the specific test environment. By using this method we can find out the relationship between the channel model and our test environment after analysis the test results. Rayleigh fading distribution and Rician fading distribution are the basic types for the LOS and none LOS environment. We will use the Global Position System for the 1575.42MHz signal strength research in LOS put the device in a car. In this thesis, we will use a “Scenario Signal Strength” method for the AUD performance estimation. We will introduce the CTIA test program in Chapter3.2 and we will test the AUT performance in a CTIA approved 3D chamber, and then provide several models to simulate the near field affection for the AUD. We can provide several different factors to compensate the near field affection for the antenna when we do the performance test in the car. “Scenario Signal Strength” factor is a compensation value for channel model when the antenna in the user equipment is impacted by the environments. In recent years the handheld product is more and more popular for people. The concept that adds the near field affection for a channel model is helped to have a more accurate value for evaluation.
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YANG, KUO-YU, und 楊國煜. „RESEARCH OF THE MINOR POSITION IN THE PUBLIC LAW“. Thesis, 1996. http://ndltd.ncl.edu.tw/handle/09342255812095011838.
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LEN und 夏銘聰. „Computer Simulation and Research of UWB/TDOA Position System“. Thesis, 2005. http://ndltd.ncl.edu.tw/handle/86617093383081029037.
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碩士南台科技大學
電子工程系
93
The Ultra-wideband (UWB) communication technology, with low power and high-speed information transmission ability, can be adapted to indoor-wireless digital network for the fast and convenient network service between the portable electronic equipment, such as PDA, digital camera, audio-visual equipment, mobile phone, notebook, and the other electronic mobile-equipment. By high-speed transmission, those equipments can exchange a large number of digital information and files through wireless communication network. The Ultra-wideband technique with shorter pulse can also be used for the precise location of the indoor transmitter. By using the information of the receivers, which are put on the fixed position, and a new appropriate operation rule, we can estimate the location of the emitter. Because the unit of the Ultra-wideband pulse duration is nano second, the location error will be less than one meter. This function can be applied to check the warehouse stock or track the special goods. The proprietors of the interflow of commodities and stores can suppose to make an inventory of stocks, so that they can get the accurate responses and save manpower and time. In this thesis, we present a novel Time-Difference-of Arrival (TDOA) location technique with the UWB impulse radio. By estimating the time differences between the different receivers and the transmitter (the space of ), the position of the transmitter can be located. The advantage of the TDOA technique is avoiding a complex synchronization circuit. In this thesis we also consider the effects of imperfect communication channel, such as Multi-path, Multiple-access interference (MAI) and path fading, that may affects the precision of the location. By Matlab simulation, the influence of the above impacts can be derived and these results can be very useful to the UWB position engineers.
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Cheng, Chin-Mu, und 鄭清木. „Research on Position-Controlling Motors for Loads of Turntable“. Thesis, 2004. http://ndltd.ncl.edu.tw/handle/99700771760660506270.
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碩士中原大學
電機工程研究所
92
Stepping motor is often used in position-controlling. However, after long-time running, errors of position control occur frequently when a 2-phase stepping motor is used for the production of TV deflection unit with loads of turntable. As a result, about 60 times of breakdown take place every day. To find other types of motor to replace the existing one is, therefore, needed. DC brushless motor is a special motor without armature and commutator, making itself high efficient and small. Nevertheless high precision stepping motor also has its advantages to improve the problem of position control. Results of simulation and analysis from aspects of cost, efficiency, stability, and complexity of adaption reveal that DC brushless motor has ameliorated of the problems to a small extent. High-precision stepping motor is thus suggested due to its accuracy of position control and reduction of breakdown rate from 60 times to 10 times daily. It costs only NT 32,000 dollars replacement per unit, but leading to as high as NT 250,000 dollars of cost saving per month. Effectiveness of using high-precision stepping motor in place of is proved in the technical report. Keyword：DC brushless motor, stepping motor, position control
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Wu, Wen-chen, und 吳文成. „Research on Micro Position of Assistant Feedback by Mechanical Vision“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/00004329187898198495.
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碩士義守大學
電機工程學系碩士班
94
The image acquisition system is a kind of pretty mature technology. The thesis is to develop an automatic micro-positioning system that integrates image acquisition, signal amplifier and driving unit for achieving the function of a high precision and stability micro-positioning control system. The system is divided into three subsystems: image acquisition system, signal interface/driving system and mechanical positioning system. The image acquisition system is used to obtain the absolute/relative coordinate by pattern matching method in the software developed in the LabVIEW. According to the coordinate, the signal interface converts the I/O signal to delivery the necessary control signal. Then, the mechanical positioning system achieves a high accurate positioning work. According to the experimental results, the system can achieve the function of a high precision and stability positioning control system.
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曹爾發. „Research on Position Control Strategy for Flexible Mechanism with Friction“. Thesis, 2004. http://ndltd.ncl.edu.tw/handle/18261979139069022355.
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Liu, Ying-Chih, und 呂英誌. „On the ejector-type distillation system nozzle optimum position research“. Thesis, 2013. http://ndltd.ncl.edu.tw/handle/40142695918570477683.
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碩士國立勤益科技大學
冷凍空調系
101
Water scarcity is a growing global problem. Desalination and waste water recycling are the two main methods for exploitation of water resources and water conservation. But both methods will consume a large amount of energy. How to develop a water generaion system with low energy consumption cost is a subject quite worth studying. In this study, an ejector-type distillation system has been developed. This system distills water by means of ejector suction function with the following designated conditions: - Saturation temperature of generator: 100,105, or 110℃. - Saturation temperature of evaporator: 50℃ - Saturation temperature of condenser: 60,70, or 75℃ - Ejector nozzle diameter: 5.392 mm. -The inner diameters of diffuser calculated by using ejector one-dimensional model vary from 11 mm to 17 mm. Since one-dimensional model analysis of the ejector that use water as the working fluid did not display nozzle optimum mounting position corresponding to maximum performance. In order to find out the nozzle optimum mounted position. The design condition ejector peak entrainment ratios are found out experimentally by changing four different nozzle positions with collocation three different diffuser inner diameters. Finally, empirical formula of ejector optimum mounted position for water system is derived from experimental data.
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Luo, Jian-Yuan, und 羅健源. „A research of cooperative networks─network position, competence and advantage“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/87297894895296048628.
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碩士國立中興大學
企業管理學系所
94
The main purpose of this study is to probe how a firm can endow itself with competitive advantage through cooperative network relationships in a cooperative network and to expect to have a further understanding of the relation between cooperative network relationships and competitive advantage. We think that if a firm wants to endow itself with competitive advantage through cooperative network relationships, a firm should obtain resource advantage (valuable, rare, inimitable, unsubstitutability) first. In order to have a more complete annotation of the obtainment of resource advantage in a cooperative network, we also adopt both the resource based perspective and the network perspective to propose that a firm’s internal network competence and external network position are two antecedents of resource advantage.Then, we build a conceptual framework. According to “Financial Supervisory Commission, Executive Yuan─Securities and Futures Bureau”, we choose the listed firms as our research objects, then we delivery questionnaires to them through mail and E-mail. After one and a half months,we receive 130 effective questionnaires. Then, we proceed to analyze our data and to test research hypotheses by χ2 test, T test, descriptive statistical analysis, factor analysis, Pearson correlation analysis, regression analysis and AMOS. Empirical results reveal that both network centrality and network competence positively influence resource advantage; resource advantage positively influence competitive advantage. Besides, through the test of mediation effects, we find that both network centrality and network competence influence competitive advantage further through resource advantage. Finally, according to the empirical results, we specify the meanings of research hypotheses and the whole study. Then, we provide suggestions in practices, research restrictions and possible future research directions.
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Tsai, Cheng-Liang, und 蔡政良. „The Research of Marketing Competition Position on the Credit Card“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/28380192931662876998.
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碩士國立成功大學
統計學系碩博士班
94
With credit debt and credit card slaves increasing, bank’s former marketing strategies have failed. The economic benefits of credit card market still are not ignored. Today, how to increase market share of credit card is not the key point of bank’s marketing strategy. There is not necessary that high market share can bring high economic benefits. This research regards thirty-six issuing banks in Taiwan and overseas. The residents of twenty years old above are the population. We collect data by means of sending survey. We takes stratified sampling to get three hundred samples in effect. The main statistics methods are “Descriptive Statistics Analysis”, “Factor Analysis”, “Analysis of Variance”, “Cluster Analysis” and “Multidimensional Scaling Analysis”, etc….We find the competitive position and consumer characters of each bank. This research exposes as follows: 1. The omni-directional issuing bank: Chinatrust Bank is the leader. The main competitions are Taishin International Bank, Cathay United Bank, Union Bank of Taiwan and Jih Sun International Bank. 2. The servicing-directional issuing bank: Citi Bank is the leader. The main competition is Taipei Fubon Bank. 3. The general-directional issuing bank: The general-directional issuing banks have a smaller market share than the others. There are two competition groups: one group are Far Eastern International Bank and Overseas Chinese Bank, another are Shanghai Commercial & Saving Bank and Land Bank. 4. The financial-serving direction: The degrees that Survey Candidates care are influenced by ages, family life cycle, the level of education, background, profession and monthly income. 5. The image direction: The degrees that Survey Candidates care are influenced by ages, family life cycle, the level of education, monthly income and districts. 6. The convenience direction: The degrees that Survey Candidates care are influenced by ages, family life cycle and districts.
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Wu, Vincent, und 吳國豪. „The Research on the Calligraphy History Position of Soong Kao Tzong“. Thesis, 1998. http://ndltd.ncl.edu.tw/handle/80211882473962827536.
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Chen, Wei-nian, und 陳威年. „Research on position control of switching solenoids with self-displacement sensing“. Thesis, 2008. http://ndltd.ncl.edu.tw/handle/21752836627181852806.
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碩士雲林科技大學
機械工程系碩士班
96
The purpose of this thesis is to convert an on-off solenoid valve into a proportional valve via self displacement sensing. Accurate position control will be achieved without adding an external displacement sensor. Exploiting the fact that the coil inductance varies with iron-core position, we apply a sinusoidal signal to the solenoid coil. A capacitor is connected to the coil to form an LC resonant circuit. It is found that if the frequency of the excitation signal is near the resonant frequency of the LC circuit, the core position can be estimated by observing the phase difference between the input and output signals. Two different methods are used for phase detections. The first one employs the Cosine law, and the second utilizes the capture function of a 16-bit microcontroller. The phase angles corresponding to a discrete set of core positions are first established. The iron-core displacement is then detectable by interpolating on these measured data. Finally, a closed-loop control system is constructed using the 16-bit microcontroller. Real-time testing indicates that a positioning accuracy of 0.03 mm can be achieved over a stroke of 1.5 mm. Keywords: on-off solenoids, self-sensing, linear actuators, displacement sensors
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Bao-Kim, Liu, und 劉寶磬. „The Research of Fuzzy Logic Applied on Antenna Axis-position Compensation“. Thesis, 2000. http://ndltd.ncl.edu.tw/handle/60709285607344546620.
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碩士中原大學
資訊工程學系
88
While the Antenna is tracking a moving target, it can only turn the detected angle passively by following the moving trace of that target. Which can not reduce the angle error between the target and Antenna. By researching and analysing the target’s past behavior the following moving trace can be predicted , and then guide the Antenna move to more accurate next position of target by applied the axis position compensation force. The compensation is adjusted by the fuzzy logic according to the moving distance and angle of target . So it can reduce the error and response quickly by computing compensation . The Fuzzy logic method used in this thesis is simulated by the Matlab and adjust the membership function by input a set of AZ and EL axis data , then compute the force of compensation which is decided from output of fuzzy fuzzy logic inference. The procedure of adjust the membership function continues until the error is unacceptable. Therefore the Antenna can predict the moving of target precisely.
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Liu, Yu-fang, und 劉裕方. „Research of Applying PID Theory to Position Control of Slider Crank“. Thesis, 2005. http://ndltd.ncl.edu.tw/handle/87796922337135262708.
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碩士義守大學
電機工程學系碩士班
93
The PID controller up to now is still frequently used in industry and manufacturing. The main reason is its uncomplicated device and facile execution, as well as good quality of controlled result. Since the PID was proposed, numerous related investigations and dissertations have been accomplished. The applications of PID combined with other control theories have also been effectively carried out. The importance of PID is therefore exceedingly evident. The steady state error is the common and widely existed problem for controller researchers. This thesis proposes the efficient solution by combining the PID and labVIEW software to eliminate the steady state error of the slider crank position control. The three reference indexes are error, differential error and double differential error. The better robust performance is predicted for the proposed PID controller. The analysis and discussion of the experimental results are detailed proposed in this thesis.
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Chen, Song-Ray, und 陳松瑞. „A Research of Velocity and Position Control of AC Induction Motor“. Thesis, 1997. http://ndltd.ncl.edu.tw/handle/10927933482854202048.
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Guo, Jin Sheng, und 郭進昇. „THERMOSOLUTAL CONVECTION WITH HORIZONTAL DIFFERENCE POSITION PARTITIONS OF THE ENCLOSURES RESEARCH“. Thesis, 2018. http://ndltd.ncl.edu.tw/handle/equ29c.
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碩士南亞技術學院
機械工程系機械與機電工程碩士班
106
The current study is primarily motivated to gain better understanding of the flow pattern, the temperature distribution and concentration distribution caused by thermossolutal convection in an electrochemical system with a partially divided verticaled enclosure. The test cell is a rectangular enclosure formed with acrylic and copper plates, which is wrapped with foam insulator to ensure an adiabatic boundary condition, and its aspect ratio is 1.0. The temperature is maintained uniform and controlled by two separated constant –temperature baths, which circulate heated or cooled water through the heat exchanger. The working solution used is aqueous copper sulphate. An electrochemical method based on a diffusion-controlled electrode reaction will be employed in this work for creating the concentration gradient. To visualize the flow, the shadowgraph technique are used. To understand the flow structure, the temperature distribution and concentration distribution are investigated. Also, this thesis is to develop a numerical method for analysis of thermal and the flow pattern velocity and vecten distribution. Finally, the correlations between Sherwood number and solutal Grashof number are also need to be analyzed.The ranges of the parameters in this work are： Ar(enclosure)＝1，Ar(partitions)＝0.111，Pr＝7~8，Sc＝1700~2100，N＝±10.69，Gr,t=4.5×106，Gr,m= 4.8×105
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PIAO-SHAN, HSU, und 許彪山. „THE RESEARCH OF THE BANK CREDIT RISK FROM THE ADUIT POSITION“. Thesis, 2005. http://ndltd.ncl.edu.tw/handle/27319386259116998163.
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碩士輔仁大學
金融研究所
93
In the wake of Asia financial crisis in 1997, domestic banks were getting stricter on corporate credit policy and borrowing. But even so, corporate scandals or coffer depletion were in sight all the time when global economy were picking up. Those so-called mine-shares drew bead on investors and banks and brought them huge losses. Among them, some of the top managements were well-educated with professional diploma and were familiar with operations of various financial derivatives. They contrived to channeled corporate fund overseas and depleted corporate by setting up paper company engaging in fraudulent trade; some even cooked the books to deceive investors public. Once these fraudulent companies surface, it would take their toll on banks. To reduce bad loan, how to foresee and take precautionary measures to steer clear of those fraudulent clients have become an urgent call for banks. Traditional audit only focuses on whether internal control is compliance with laws and regulations and only scratches the surface when it comes to banks’ main risk-corporate credit risk. But banks’ operation risk heavily hinges on the quality of credit assessment, auditors not only have to review whether internal control mechanism is in compliance with laws laid down by regulatory bodies but also need to further develop a credit analysis system that put banks’ interest first and be capable of “ nipping in the bud” against potential corporate credit default to avoid being trapped in corporate credit risk while maximize shareholders’ value. To this end, auditors should from to time review credit compliance both externally and internally as well as try to better conventional credit assessment approach in order to keep abreast with the business development pace and find out doubtful clients beforehand. By doing so, bank loans can be recovered in a timely manner and assets quality are therefore boosted to assure the normal operation. Moreover, in response to implementation of the Basel II at the end of 2006, banks have to think about how to apply Internal Rating-Based Approach (IRB) to corporate credit assessment. Namely, by importing new Basel assessment approach, banks have to try to look for eligible clients through credit analysis and selection, and this becomes an important issue for banks. This thesis set out from audit viewpoint and intends to construct a model for corporate credit assessment that is based on current corporate credit assessment approach and case study, which are also employed to analyze and develop this model and to further verify that the contentions in this thesis are practical and useful on sifting out clients with potentially poor credit. Thus, banks are able to minimize credit risk and reduce the frequency of corporate credit default.
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Hsu, Hui-Ming, und 許惠明. „Research of Position Training System of Track and Field Coach in China“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/38698312090338879810.
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碩士國立體育學院
教練研究所
94
Abstract The purpose of this study is to investigate the relevant law and regulations, style and content of training, the grade of coach, duty of station and position training benefits of track and field coach in China. At the meantime, the achievements of track and field coach’s position training in China are summed up and provided as the innovation references to the coach system in Taiwan. The work of coach training in China takes account of highly. The researches of “position training system of sport coach” are preceded since 1987, the track and field was accepted and appointed first by 'National Sports Commission' as the tested item countrywide in 1988, and this coach’s position training system is also the first item carried out in China. Under the collective efforts of Sport Offices at all level, related departments and universities or colleges undertaken, the framework development of track and field coach position training system in China has become standardized, systemized, socialized and internationalized, and the devolpments of coach position training at all level have fully expanded. Especially, the developments of coach's quality of position training have already become one of the important factors that China improved its competitive sport. The methods of document analysis and content analysis are adopted directly in this research to explore the evolution of track and field coach's position training in China, and following conclusions can be obtained: 1. In recent years, the competitive sport of China makes progress enormously. Analyzing from the scientific training and management of competitive sport, the most benefit are gotton from the superiority of the socialist system, where the ‘nationwide frame’ is implemented, and all the manpower, material resources, financial resources of the municipal government in the whole country are applied effectively to the competitive sport. 2. In China, the appointing system is adopted before implementing coach's position training, which is lack of elasticity, and has become a perfect stage already after 1996. The system of track and field coach training is on the basis of academic credentials, the position training is the key point, which includes all kinds of short-term and diversified information service coach training forms, where the certificate licences is the essential condition that the coach declares to hold a post and promote. 3. There are five grades of the track and field coach job in China, namely, tertiary coach, second coach, first class coach, senior coach and national-level coach. Among of these, the national-level and senior coach belong to the professional title, the first class coach belongs to the intermediate professional title, while the second and tertiary coach belong to the elementary title. At all levels of coach credentials, they must have good sportsmanship and spirit devoted for the sport, besides, the academic credentials, holding a post and the training periods also have strict restriction. 4. The basic structure of track and field coach's position training system in China is made up of three components, that is, management system, teaching and educational administration system, and the security system. Among of which, the management system is critical, teaching and educational administration system are the kernel, and the security system is the guarantee. All the three terms must connect each other and can be neglected. 5. The expenses of track and field coach’s position training are according to the principles of who derives the benefited should offer the funds, and the ways adopted are national allocation mainly, the collective and personal payment as complement, and combines the multi channels raising the funds. 6. The training forms of all levels track and field coaches in China are, takes flexible diversification, pursuits time efficiency in 2-3 months to finish the academic programs of about 200 class hours, which includes teaching by postal tuition 100 class hours and instruct teaching (specialized course and practical operation) 100 class hours. Then, according to different projects, different grades, and different training content, the various kinds of training forms are adopted, respectively. 7. Basing upon the present situation of the track and field coach traing in China, it is found that its development is steady, the number of the coach is about 25,000 at present, and there are 7,500 track and field coaches, which accounts for 30%. Up to 1997, through the training of all levels track and field full-time coach, there are 6,273 persons obtaining the professional title, which accounts for 89% of the full-time coaches of track and field at all levels. At the respects of educational degree and age composition in outstanding sports coaches, there are low educational degree and aging phenomenon exist, and this is one of the phenomena worths the relevant units improving positively in China. Keyword: track and field coach, position training
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Su, Chen-shan, und 蘇振山. „The research on applications of visual servo position control in micro factory“. Thesis, 2008. http://ndltd.ncl.edu.tw/handle/08733044824291077621.
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碩士國立成功大學
機械工程學系碩博士班
96
The micro factory is composed of three systems. These systems are manufacture and assembling system, the material supply system and the object transport system, and the servo position control is the central technique of these systems. In this thesis, at first I will introduce some general methods for image processing, it include image edge detection, image segmentation, Morphological image processing and the applications of digital wavelet transform about image compression and noise filtering. Next, I will describe the structure of visual system and utilize regional edge statistics algorithm with multiple sub-domain to be an important technique of visual servo position control in the micro factory. Finally, the micro-compliant gripper developed by “Opto-Mechatronic System Control Laboratory” is utilized to develop a PC-based visual servo system with digital signal processor (DSP) and applied to automatic micromanipulation of object. In the experiment, the tool of object transport system is utilizing a piezo-drived compliant micro gripper with size of 669×546×100μm3 and can grasp the thin cylinder with diameter 30~80μm; and further, to increase the DOF of the object stage to accomplish the material supply system. Finally, The research achieved to supply, position, carry and transport the object with diameter 50μm automatically in micro factory.
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tse, Cheng an, und 鄭安策. „Research of the Development Form Pager in 8-Position Sensitivity Test Platform“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/76420746236219098247.
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碩士大葉大學
電機工程學系碩士班
94
In this thesis, the study is the Eight-Position Sensitivity Test Platform (EPSTP) research and installation. The EPSTP study will focus on installation, setup the golden sample via this platform so that the sample can be a reference for correction and comparison to other stations. There are three main topics discussed in this thesis. In the first topic, cell phone and pager sensitivity test procedure are examined. Besides that, test environment, test software, and equipment setup are discussed later. The installation idea, equipments used, and control program writing are provided. Finally, the prevention from damages on equipments is described also. Design rules and knowledge for setup EPSTP are the second topic. There are two different tests. One is the test under anechoic chamber and device under test (DUT) in the normal area, and the other one is the test under carrying DUT on the salty-lite to simulate the human carrying the DUT. In this way, the golden sample can be obtained. The last topic is the simulation and emulation results. Finally, the advantages drawbacks of the EPSTP are drawn in the conclusion section.
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Hsu, Chia-Wen, und 許嘉文. „Research on resource characteristics, capability enhancement and network position in international business“. Thesis, 2001. http://ndltd.ncl.edu.tw/handle/16850594392258403955.
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碩士國立暨南國際大學
國際企業學系
89
We try to integrate the resource-based theory, network theory, strategic linkage theory and organizational learning theory into a research framework. We consider key factors that affect the performance of alliance cooperation. In our research, we use the information technology industry, machine industry and chemical industry as our research sample for empirical study. Using Path Analysis and LISREL model, we find that firm’s learning capability and relational capability are key factors that significantly influence enhancement of firm’s capabilities and improvement of firm’s network positions. Firm’s learning capability and relational capability function as the key factors to influence firm’s enhancement of capability and network position. Complementarities in research and marketing can help Taiwan firm to enhance their research capability, manufacturing capability and network position. Another important result reveals that firm’s capability enhancement in R&D and marketing facilitate Taiwan firm to enhance their network position in the overall industry network.
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Ho, Zu-Sheng, und 何祖盛. „Research on the Position Sensorless Control Technology of the Brushless DC Motor“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/bp38k6.
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博士義守大學
電子工程學系
103
The brushless DC motor rotor position sensors are needed to provide rotor position information for commutation. If the rotor is not placed in the best position, it might cause a phase-lag or phase-lead during commutation. The brushless DC motor can adopt a sensorless drive method to detect the rotor position and replace the rotor position sensors. This can remove the placement problems of rotor position sensors and enable the motor to run better in environments of high temperatures or humidity and other harsh conditions. However, the most troublesome aspects of the sensorless drive are the starting process and the impact that the sensorless method to detect the rotor position has on the operation. This dissertation presents a full speed range sensorless circuit that uses the PWM of commutation signals to filter out noise caused by PWM switching in the phase voltages. This makes the motor easy to start, does not produce phase shifting problems at high speed, and even achieves the purposes of high and low voltage systems. When the brushless DC motor is running, it will cause the problem of a current lag because of the characteristics of the inductor. To improve this problem, this dissertation proposes two correction methods: One is unexcited phase correction method. The method detects deviations from the current phase by using the two unexcited phase freewheeling current effects that exist within an electric cycle and then achieves phase correction through the phase control. The other way is the minimum torque ripple correction method, which uses the characteristics of the DC bus current driving produced in response to determine the phase deviation. Ultimately, the method uses the phase control to achieve the correction of minimum torque ripple to improve the problem of torque fluctuation when driving. In addition to providing the correct phase information for the sensorless drive, these two correction methods can also be applied to the sensor drive to improve the placement of the rotor position sensor offset problems. This dissertation integrates the proposed back electromotive force (BEMF) circuit, positive phase drive, and the minimum torque ripple drive to establish a platform for rotor position sensor calibration. The rotor position sensor is usually fixed on the PCB or embedded into mechanical structure. However, during the processing or assembly by operators, position deviation can easily occur. Currently, the rotor position sensor calibration methods make the rotor rotate by the method of dragging and make corrections through the relationship between the back electromotive force and the rotor position sensor. The proposed rotor position sensor calibration platform uses the sensorless drive in the correct phase or minimum ripple phase, determines the deviated angle by the relationship between the commutation state and the rotor position sensor, and then displays the error angle on the LCD or computer. Finally, the experiments verified that the sensorless circuit, correct phase correction, minimum ripple correction, and rotor position sensor calibration platform proposed by this dissertation are correct, and stably achieved the practical purposes of the theory.
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Lindsay, E., Peter Vowden und Kath Vowden. „Does the anatomical position of the motorcyclist impact venous return?“ 2013. http://hdl.handle.net/10454/9785.
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NoWhile most motorcyclists focus on the maintenance of their motorcycle and personal safety equipment, recent research has highlighted the impact of motorcycling on lowerlimb health. This article underlines the importance of regular health checks to recognise early warning signs of venous disease and how health promotion initiatives linked to preventative strategies may help to minimise the risk of developing venous leg ulcers in this difficult-to-reach population.
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Kan, Wen, und 甘雯. „The Research of Establishing Position Census System in the R.O. C. Administration Organization“. Thesis, 1995. http://ndltd.ncl.edu.tw/handle/75703707753615251013.
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Chiu, Wei-Shao, und 邱紹偉. „Study of Building Product Position and Strategy Research- Case of Lien-Jade Company“. Thesis, 2014. http://ndltd.ncl.edu.tw/handle/fu5y6q.
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碩士崑山科技大學
企業管理研究所
102
This study proposed to explore the association between product position and marketing theory, on the basis of a case study. The results showed that commodity-linked poly construction, mainly cooperated by a group with similar needs and desire. They have common value from a variety of aspects, including quality requirement of residents, reputation and images of builders. The results showed that the factors maintaining this brand was because of their product position was clear. This factor also successfully helped this company to promote their brand as international.
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Po-YunChia und 賈柏耘. „Research on Tool Surface Equation and Machining Position of Hobbing and Power Skiving“. Thesis, 2017. http://ndltd.ncl.edu.tw/handle/67v9js.
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碩士國立成功大學
機械工程學系
105
SUMMARY The hobbing method is the most common way of making external gears today. The powerful skiving method is a new and more efficient gear machining method. But the current lack of mathematical models of these two kinds of tools. This paper presents a simple method to establish the mathematical models of hobbing and power skiving tools, and the proposed mathematical model with the following characteristics. The first is that the mathematical model of the external gear is calculated by the meshing of the rack and the gear. The 4 × 4 homogeneous coordinate transformation matrix is used to design the hobbing cutter on the cylinder, and then the conjugate theory is used to solve the cutting edge surface equation of the hobbing cutter. Thus the surface equation can be seen hatch design variables, it will help to simplify the tool design process. The second feature is that, since the cutting edge of the powerful skiving tool is not a simple function, we define it as a 1 × 4 matrix. Then use 4 × 4 homogeneous coordinate transformation matrix to establish the position of the power skiving tool and the gear. So mathematical model of the powerful skiving tool will be established, and then the conjugate theory is used to solve the cutting edge surface equation of the powerful skiving tool. The parameter of the surface equations of power skiving tool design will be helpful to simplify the design process of the tool. Finally, We have established a 4 × 4 homogeneous coordinate transformation matrix with six degrees of freedoms. With the machining processing of hobbing method and the power skiving method, then we will ues the homogeneous coordinate conversion to solve the six variables. So the positions of hobbing and power skiving method while machining external gears will be found.
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Tu, Hung-Jan, und 涂弘燃. „Research on Interior Permanent Magnet Synchronous Motor Drive and Rotor Position/Speed Estimation“. Thesis, 2003. http://ndltd.ncl.edu.tw/handle/00082456822630946689.
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碩士國立臺灣科技大學
電機工程系
91
The thesis studies a drive system implementation and its rotor position/speed estimation for an interior permanent magnet synchronous motor control system. First, the characteristics and mathematical model of the interior permanent magnet synchronous motor are discussed. Then, the parameters measurement of the motor is proposed. Next, a new rotor position estimator of the interior permanent magnet synchronous motor is discussed. This estimator can easily be realized and it is unrelated to the motor parameters. In addition, the estimating technique only needs the current sensor circuit and does not require any hardware circuit. After that, some computer simulation results are discussed. The implementation of the interior permanent magnet synchronous motor speed control system is developed and based on a digital signal processor. Several experimental results can validate the simulated waveforms and evaluate the correctness and feasibility of the proposed methods.
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陳慶國. „Research on Nonlinear Controller Design and Rotor Position Estimation for Switched Reluctance Motor Drives“. Thesis, 2004. http://ndltd.ncl.edu.tw/handle/67896904040925588482.
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45
Wu, Ping-Sheng, und 吳秉昇. „Research of Hybrid Position/Force Control for Applying Automatic Waxing with a Robot Arm“. Thesis, 2017. http://ndltd.ncl.edu.tw/handle/7vv75m.
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碩士國立臺灣科技大學
材料科學與工程系
105
Industrial robots are usually used to do repeated work. For example, pick and place, handling and so on. At the same time, these robots are generally controlled under position control mode. However, it is necessary to consider about the external force of the end-effector when the robots need to contact with the environment of objects in the specific task, such as grinding, polishing, deburring and so on. Hence, the robot arm must have the ability of sensing and compliance for the external force. In the case of waxing, hybrid position/force control is a good way to implement. Hybrid position/force control is a strategy to divide the robot arm’s six degree of freedom into parts, one is position control part, and the other is force control part. The dynamic model of six axes robot arm is so complicated that it is very difficult to control the robot arm under torque control mode. And the fact is that robots usually do the task under position control mode. So the PID controller is utilized to implement the force control of the end-effector. The advantage of PID controller is that it is easy to realize the end-effector’s force control under the position control mode. The closed loop control is achieve after getting the controller’s output, which is displacement of the end-effector, and then computing robot’s inverse kinematics to order the robot to adjust the position. The quintic polynomial is used for trajectory planning, robot will do the smooth motion by designing the trajectory which position, velocity and acceleration are all continuous. Finally, the waxing system is realized by integrating the position part and the force part. The experiment of the study include the fundamental experiment of the transformation of force/moment, force control, waxing under position control and waxing with hybrid position/force control strategy. At last, the method of the study will be proved as a better way to waxing task by comparing the result of position control and hybrid position/force control method. Moreover, the applicability of waxing system proposed by this study is proved by using sponge and woolen wheel as two kinds of different waxing tools.
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Huang, Po-Yuan, und 黃柏元. „Research on the Legal Position of Judicial Policemen and the Legitimacy of Judicial Duties“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/96120721207141148381.
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碩士開南大學
法律學系
103
Since there was judicial trial, the judicial policemen has played an important role in the security maintenance of court and the process of investigation and trial. Unlike the United States of America which has various police institutions, the countries with civil law systems usually have centralized and comprehensive police system. How does this police system coexist or interconnect with the judicial police system of judicial authorities? Moreover, how do judicial policemen enforce the Prosecutors' Order, Arrest with a Warrant and perform other judicial duties, such as safety check and body search? Is there any oversight or questionable parts? And does the system conform to the principles of Administrative Law and The Code of Criminal Procedure? In Taiwan, the judicial policemen is set at each of the judiciary, it belongs to the most narrow sense of the judicial police. At present, access control and security checks, is considered to be a violation of the principle of explicit delegation, and search the body is supplied with the search incident to arrest by the Criminal Procedure Code theory to define the scope of the search.
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Lin, Gwo-Ching, und 林國卿. „A research on the best position for operating the smart phone with one hand“. Thesis, 2014. http://ndltd.ncl.edu.tw/handle/81975252318363465254.
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碩士健行科技大學
工業管理系碩士班
103
Due to the popularity of smart phones, long-term operating of improper posture may cause users serious injury on human hand. Because the big screen is the current trend for smart phones, resulting in changing in the operating range of the hand and increasing the weight of the body itself, it''s display will produce different effects to hand, it is worthy of further exploration when the situation is not clear. Therefore, this study will focus on large-screen mobile phone with a different hand sliding operating position, and proceed operation and evaluation. First, we use questionnaires to confirmed that users all use mobile phones with more than 4-inch screen, and analyze its operating posture and habits. Then we summarize the three operating positions to carry out a experiment from references of relevant literatures, Further, we selection 15 young people have smart phones as experimental subjects, By recording their EMG for 4.6-inch large screen mobile phone operating and collecting relevant data for statistical analysis and comparison, we try to find a better operating position to reduce the risk and probability of hand injuries. Experimental results show that different operation modes have different effects indeed,and the operating posture this study found is significantly better than others. Therefore, it is suggested that when the users operate the smart phone,the operating posture this study proposed which fits in with the concept of operating posture will be able to effectively reduce finger force and wrist stress.
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Bo, Wen-Yi, und 薄文怡. „Research on the Document Adding Method and Function Menu Position of Mobile Scanning Application“. Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7x4d4s.
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碩士國立臺灣科技大學
設計系
107
With the popularity of smart handheld devices and the improvement of digital image processing technology, application software, and computer user interface, it has been becoming more convenient for consumers to use image scanning technology. Market objects have changed from office businesses to general consumers. The purpose of this study is to explore the user interface experience pertinento to the scanning application on a smart phone. That is, to study which file adding methods and function menu position can help achieve a better task operation performance and user experience in order to further improve the mobile scanning application and to improve user satisfaction. This study is divided into three experimental stages:（1）Collect functional data of existing mobile scanning applications, and conduct questionnaire design to help investigate current situation;（2）Pilot experiment: Through the results generated from partiicpants’ task operation performance and questionnaire survey, the subsequent design improvement direction is obtained;（3）Verification experiment: Based on the results from summarized literature review and pilot experiment. Simulation prototypes were created to help carry out verification experiment. The experimental design was conducted in a two factor between-subject experimental design of a 2 (file adding method) x 3 (function menu position) in order to explore whether different research variables affect the participants’ subjective feelings. The results of the study are summarized as follows:（1）The "floating operation button" is better than the "pop-up operation button" in terms of task operation performance and subjective satisfaction. （2）The function menu position of "listed below" is better than the "list alone" in task operation performance and subjective evaluation;（3）When adding documents by using "menu bar on top", it is recommended to use "jump operation button" to help improve user satisfaction;（4）The mobile app should try to improve the error tolerance rate, and users can quickly fix it after an error occurs;（5）Clean and clear graphics can help users quickly learn to operate a new application and have a strong learning ability;（6）Within a limited interface area, each presentation of information will compete with the main information, and the interface usability can be improved by removing unnecessary information from the interface. Keywords：Scanning, Function menu position, Applications, User interface, System usability
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YANG, MING-CHE, und 楊明哲. „Research on Spatial Position Matching Method of Sub-Interferograms of Synchronous Phase - Shift Interferometer“. Thesis, 2018. http://ndltd.ncl.edu.tw/handle/xx8pqa.
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碩士國立聯合大學
光電工程學系碩士班
107
Synchronous phase-shifting interferometry uses multiple interference patterns to retrieve phase signals by subtracting and dividing these patterns. In the subtraction process, the system fixed noise in each interference pattern is automatically cancelled to obtain a higher precision measurement result. The pixel-matching method of these patterns was studied and two kinds of algorithms were designed and implemented at the same time.These are the image processing and fast Fourier transform phase correlation method,respectively. One of the four interferograms was taken as a reference to pixel-match for the other three maps. The phase correlation algorithm is used to calculate the relative displacements of the four interference fringe patterns.
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Liao, Jau-Jiun, und 廖昭郡. „The Research of Combining SERVQUAL and SEE to Develop an Intelligent Position Service Platform“. Thesis, 2010. http://ndltd.ncl.edu.tw/handle/88562211020231619980.
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碩士國立高雄第一科技大學
資訊管理所
98
The factors that determine profitability are not limited to tangible products; they also include intangibles associated with the service aspects of business, and have become a Key Success Factors (KSF) for any enterprise. However, services are susceptible to the changing needs of customers, and particularly prone to variation are problems associated with design and the development of new products. These kinds of problems can significantly influence customers, and affect user intentions. We had two primary objectives in performing this research: 1) acquiring and responding to the changing needs of customers, 2) ensuring that developed services meet the needs of customers. In the first part of this study, we explore service-related studies. In the second part of the study, we look at three areas of Service Science, service design, technology, and commercial applications. We integrate these three aspects of service to form a foundation for our research, which we refer to as “Directions of Service Science”. The implementation of these aspects of service is covered by an extension to this model we call the “Extended Conceptual Model of Service Science” , which includes Service Development Model, intelligent position service platform, and immediate interactive two-way commercial applications. To achieve our objective of “ensuring that developed services meet the needs of customers”, we first combined Service Quality (SERVQUAL) and Service Experience Engineering (SEE) to form an extension of service design we call “Service Development Model”. We use dimensions of SERVQUAL to analyze and evaluate the needs of users, and employing SEE to develop services, based on these needs. To achieve our objective of “acquiring and responding to the changing needs of customers”, we considered the results of our analysis of“Service Development Models”, in planning an intelligent position service platform to extend the technology of Service Science, and carry out immediate interactive two-way commercial applications through case studies. After implementing the “Extended Conceptual Model of Service Science”, we progressively carry out the “Directions of Service Science”, to fulfill our objective of promoting innovation in Service Science.