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1
Centový, Radoslav. "Analýza trajektorie mobilních mapovacích platforem." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-390215.
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The diploma thesis deals with possibilities of tracing the trajectory of mobile mapping systems in order to compare their accuracy. This thesis discusses the individual components of the mobile mapping device that were used in its construction. The thesis contains the results of the experiments that were performed on individual test.
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Štrublíková, Iva. "MES systémy ve strojírenství." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228258.
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The content of the diploma thesis is a description of the functions and features of the production control systems - MES (manufacturing execution systems), an analysis of these systems implemented in The Czech Republic, an elaboration of the system proposal of an intelligent production control system and retrieving new algorithms and functions according to which these systems can by formed. The MES systems analysis is performed by comparing implemented systems to the modules of production control systems conformably to MESA international. In the system suggestion there will be the intelligent component formed by automatic analysis of the effect of the order delay in production - automatic Gantt chart comparison of the plan versus reality. According to the adjusted system parameters it will separately make decisions about production scheduling. Searching new algorithms and functions will proceed in the reagions of artificial intelligence - genetic algorithms, holonic and multiagent systems, experts systems.
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Havlíková, Marie. "Diagnostika systémů s lidským operátorem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233473.
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The doctoral thesis is thematically focused to human operator systems significantly contributing to this system reliability and safety. The theoretical part of the thesis is concerned with human activities and communications in MMS system, valuation and estimation of human reliability probability in MSS. The important part of the thesis is also a description of human operator neuromuscular system as an executive powerful system on MMS system regulating activities and the summary of human driver models in compensative lateral car control. The practical part of the doctoral thesis is based on analyses created by experimental data of drives. Experimental drives were done on drivers set following different backgrounds and different sleep deprivation at whole day. All experimental data was realized from the cooperation and following the agreement of Faculty of Transportation Science research centre on Prague ČVUT. Another part of thesis includes driver simulation model proposals with nonlinear components for lateral car control. Simulation model drives are compared with real drives or drivers on drive-simulator and there are monitored identical and different dynamic movement characteristics. The main target of doctoral thesis is to detect and obtain significant dynamical drive experience characteristics based on experimental data analyses. As well to found drive characters variability owing to driver’s fatigue and determinated evaluated characteristics changes. Acquired results of thesis should help in assistant systems that in cooperation with other components alert to micro-sleep and run off drive possibility.
4
Wang, Limin. "Modeling and real-time feedback control of MEMS device." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3711.
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Thesis (Ph. D.)--West Virginia University, 2004.Title from document title page. Document formatted into pages; contains v, 132 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 128-132).
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Voborný, Vojtěch. "Analýzu výrobního informačního systému MES Hydra a následná optimalizace ve zvolené společnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2017. http://www.nusl.cz/ntk/nusl-318355.
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The thesis focuses on the analysis of the processing informational system MES Hydra used by automotive company Jopp Automotive s. r. o.. Since the company does not use full potential of the described system, emphasis will be placed especially on the modules involved in the production process. The analysis will be carried out by user's perspective and also the actual implementation and suggestions about possible improving of user´s interface or potential application of additional options of the system will be considered. The integral part of the thesis are production schemes, on that facts and ideas for process optimalization controlled by the system will be discussed.
6
Tichý, Jan. "Systémy MES/MOM v prostředí Industry 4.0." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316386.
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This diploma thesis "MES / MOM Systems in the Industry 4.0 concept" deals with the analysis, design and implementation of these systems. The first focus is on Industry 4.0 analysis, where are describe each part of Industry 4.0. Based on this knowledge, there were specified the changes in the MES / MOM systems. According to the changes and knowledge were designed and implemented the MES / MOM concept. The system communicates with the PLC using its own communicator and represents the data in the application environment. The application implements the Historian module and system modules. The PLC has an MS SQL protocol implemented so that the device can read and write data without the need to communicate with the parent system. This implementation is in line with Industry 4.0’s concept.
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Gruber, Jakub. "Využití podnikových dat k zabezpečování kvality výrobku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442862.
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The task of the thesis is a theoretical analysis and description of the use of company data. Emphasis is placed on the system analysis of the problem. The specific production process and the data available from it are evaluated, which help to find a technical and economic evaluation.
8
Bobalík, Lukáš. "Využití senzorů MEMS pro lokální určení polohy." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221043.
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Within this Master’s thesis, design and construction of a strapdown inertial navigation system based on MEMS sensors is described. The thesis includes theoretic analysis of physics behind determining the position of an object based on the object’s aceleration and changes in the object’s orientation in space. Included is also an overview of mathematical methods related to the position calculation.
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Gill, Martin L. "Combining MAS and P2P systems : the Agent Trees Multi-Agent System (ATMAS)." Thesis, University of Stirling, 2005. http://hdl.handle.net/1893/108.
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The seamless retrieval of information distributed across networks has been one of the key goals of many systems. Early solutions involved the use of single static agents which would retrieve the unfiltered data and then process it. However, this was deemed costly and inefficient in terms of the bandwidth since complete files need to be downloaded when only a single value is often all that is required. As a result, mobile agents were developed to filter the data in situ before returning it to the user. However, mobile agents have their own associated problems, namely security and control. The Agent Trees Multi-Agent System (AT-MAS) has been developed to provide the remote processing and filtering capabilities but without the need for mobile code. It is implemented as a Peer to Peer (P2P) network of static intelligent cooperating agents, each of which control one or more data sources. This dissertation describes the two key technologies have directly influenced the design of ATMAS, Peer-to-Peer (P2P) systems and Multi-Agent Systems (MAS). P2P systems are conceptually simple, but limited in power, whereas MAS are significantly more complex but correspondingly more powerful. The resulting system exhibits the power of traditional MAS systems while retaining the simplicity of P2P systems. The dissertation describes the system in detail and analyses its performance.
10
Specht, Hendrik. "MEMS-Laser-Display-System." Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-71334.
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In der vorliegenden Arbeit werden die im Zusammenhang mit der Strahlablenkung stehenden Systemaspekte der auf MEMS-Scanner basierenden Laser-Display-Technologie theoretisch analysiert und aus den Ergebnissen die praktische Implementierung eines Laser-Display-Systems als Testplattform vorgenommen. Dabei werden mit einem Ansatz auf Basis zweier 1D-Scanner und einem weiteren Ansatz mit einem 2D-Scanner zwei Varianten realisiert. Darüber hinaus erfolgt die Entwicklung eines bildbasierten Multiparametertestverfahrens, welches sowohl für den Test komplettierter Strahlablenkeinheiten bzw. Projektionsmodule als auch zum umfassenden und zeiteffizienten Test von MEMS-Scannern auf Wafer-Level geeignet ist. Mit diesem Verfahren erfolgt eine Charakterisierung der zwei realisierten Varianten des Laser-Displays.
Ausgehend von den Eigenschaften des menschlichen visuellen Systems und den daraus resultierenden Anforderungen an das Bild sowie einer systemtheoretischen Betrachtung des mechanischen Verhaltens von MEMS-Scannern bildet die Ansteuersignalerzeugung für den resonanten Betrieb der schnellen und den quasistatischen Betrieb der langsamen Achse einen Schwerpunkt. Neben dem reinen digitalen Regler- bzw. Filterentwurf sowie mehreren Linearisierungsmaßnahmen beinhaltet dieser auch die Herleitung einer FPGA-basierten Videosignalverarbeitung zur Konvertierung von Scannpattern, Zeitregime und Auflösung mit einer entsprechenden Synchronisierung von Strahlablenkung und Lasermodulation. Auf Grundlage der daraus resultierenden Erkenntnisse über den Zusammenhang zwischen Scanner-/Systemparametern und Bildparametern werden Testbild-Bildverarbeitungsalgorithmus-Kombinationen entwickelt und diese, angeordnet in einer Sequenz, mit einem Kalibrierverfahren zu einem Testverfahren für MEMS-Scanner vervollständigt.
Die Ergebnisse dieser Arbeit entstanden im Rahmen von industriell beauftragten F&E-Projekten und fließen in die andauernde Fortführung des Themas beim Auftraggeber ein.
11
Tse, Laam Angela. "MEMS packaging with stereolithography." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17025.
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Bajer, Zdeněk. "Zhodnocení přínosů ze zavedení manažerského informačního systému (na vybraném podniku)." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-201654.
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The thesis "Evaluation of the gains of introduction of management information system (on the selected company)" examines the success of introduction of management information system. Theoretical part is focused on information systems, especially on life cycle, required features, settings and areas of management. Practical part describes complete research: characteristics and analysis of the company, creation of survey and the results. All the gains are identified in the results of the survey. This research extends theoretical area of management information systems and it helps the supplier as evaluation of completed implementation.
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Frisk, Thomas. "MEMS interfaces for bioanalysis systems /." Stockholm : Elektriska energisystem, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4609.
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Then, Alan M. (Alan Michael) 1965. "Commercialization of microelectromechanical systems (MEMS)." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8920.
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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2001.Includes bibliographical references (leaves 69-72).
Microelectromechanical systems (MEMS), at their core are a set of technologies that employ the processes developed in the integrated circuit (IC) and semiconductor industries to construct electro- mechanical devices. In the case of Microopticelectromechanical systems (MOEMS), optical elements are also integrated into these devices. MEMS technology holds the promise of significantly miniaturizing, reducing the cost of, and enhancing the performance of many sensors and actuators, evidence its widespread use in the manufacture of accelerometers, ink jet printer heads and various chemical gas sensors. Despite its stellar success in these "killer-applications," MEMS technology has failed to realize the widespread success many had predicted for it. Nonetheless, this technology has recently been explored extensively for new electro-optics applications, specifically in telecommunications for dense wavelength division multiplexing (DWDM) and optical switching. This thesis examines various models of dynamic technology adoption and explores how they apply to MEMS technology. Furthermore, by way of historical comparison to the development of application specific integrated circuit (ASIC), it will identify various developmental similarities. Finally, a unique model outlining the critical driving forces behind the adoption of MEMS technology will be constructed.
by Alan M. Then.
S.M.M.O.T.
15
Kárník, Jiří. "Převod vizualizace WinCC do MES systému COMES." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-240915.
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Presented thesis describes visualization of industrial processes. It focuses especially on the conversion of visualized data between Siemens Simatic WinCC and XML format. Build-in script editor is used to do aforementioned operations. Conversion and implementation of the data to the MES system COMES is solved in the next section of the thesis. Thesis also contains analysis of both used industrial systems and solves graphic format selection, which will be used to display image data in system COMES
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Singh, Kuljeet. "LIVESMOBILE : extending the LIVES system to support SMS and MMS for mobile learning." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/30756.
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The past decade has seen a proliferation of cellular devices actively being used in
day to day lives by people in developing nations. Education however still remains
a challenge as children are either deprived of basic education or are victims of
favoritism due to deep-rooted inequalities linked to family wealth, gender, ethnicity,
language and location. Less educated adults face problems due to lack of
skills or qualifications required to get decent jobs. The proper use of educational
material can tackle some of these problems and in general improve the general
quality of life amongst this section of the population. Learning through Interactive
Voice Education System (LIVES) is a system developed at the University of
British Columbia (UBC) which aims at providing education to people in developing
countries by using voice-based lessons delivered using a pre-existing mobile
phone infrastructure. LIVES offers a two-way communication channel between
the user and the system and thus has the ability to offer a customized learning
experience based on the users’ preferences. In the LIVES system, this customization
is offered by providing the user with a list of options through the use of voice
dialogues within calls at which the user chooses a particular option. In this thesis, we propose a way to integrate Short Message Service (SMS) and Multimedia
Message Service (MMS) into the LIVES system to enhance the learning experience
of the end-user. By using SMS, we propose that the user can customize his
learning experience in ways which are hard to achieve through voice. Moreover,
the addition of MMS to the LIVES system provides an additional mechanism for
content delivery to the student. We propose that the addition of MMS capability to
the LIVES system can tackle some of the challenges faced during content delivery
by using voice as a delivery mechanism.
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Daoudi, Kamal. "Modélisation et gestion de performance de services de la messagerie industrielle MMS (manufacturing message specification)." Nancy 1, 1994. http://www.theses.fr/1994NAN10312.
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Cette thèse présente l'étude de l'évolution du temps de réponse de services de la messagerie industrielle MMS (manufacturing message specification) sous différentes conditions de configuration et de charge. Elle s'intéresse particulièrement aux services de contrôle/commande confirmés simples, selon la classification proposée dans ce mémoire. Elle s'appuie sur une démarche classique d'expérimentations (mesures) et de modélisation. Les mesures ont été effectuées sur une plateforme MAP/MMS, mise en œuvre pour ces tests. Elles ont montré le comportement de certains services MMS sous différentes charges et dans différentes configurations. Pour mieux contrôler une application et vérifier sa faisabilité avant sa conception, il est nécessaire de disposer de modèles de performance. Une approche de modélisation est proposée ainsi que des modèles de performance pour l'évaluation des temps de réponse de services MMS en prenant en compte entre autres les caractéristiques d'une implémentation réelle de cette messagerie. Le formalisme des réseaux de pétri stochastiques colorés est utilisé pour leur représentation et la simulation pour leur résolution, après l'analyse des caractéristiques que présentent les services MMS. La résolution de ces modèles a permis de comparer leur tendance comportementale à celle observée sur la plateforme de tests
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Pekárek, Jan. "Výzkum a vývoj moderních emisních senzorů typu MEMS." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233623.
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The dissertation thesis is focused on research and development of modern emission MEMS sensors. The emission sensor based on the field emission from nanostructured materials represents innovative approach to pressure sensing. The nanostructures serve as electron emitter in an electric field between the cathode and anode in the pressure sensor. This electric field is constant and the change in ambient pressure causes the change of distance between electrodes, thereby the electric field is increasing. This intensity is proportional to the emission from the cathode made of nanostructured material. Changing the distance between the electrodes is caused by the deflection of the deformation element - the membrane, which operates the measured pressure. In the current state of the art an extensive research is carried out to find new nanostructured materials with good emission properties. Four nanostructured materials have been chosen and then experimentally prepared and characterized inside the vacuum chamber. For the simulation of diaphragm bending, the chamber is equipped with linear nano-motion drive SmarAct that enables precise changes of the distance between two electrodes inside the vacuum chamber. The computer model to predict the deformation of diaphragm was prepared in the simulation program CoventorWare. The behavior of diaphragm in a wide range of dimensions of the membrane, its thickness and the applied pressure are possible to predict. The dependencies of the current density on the electric field are plotted from the measured emission characteristics of nanostructured materials and thus characterized nanostructured materials can be compared. The dependencies are further converted by Fowler-Nordheimovy theory on the curve (ln(J/E2) vs. 1/E), whose advantage is linear shape. Basic parameters describing the emission properties of characterized nanostructured materials are deducted. Two methods for vacuum packaging of the sensor electrodes are designed. Anodic bonding technology and encapsulating using glass frit bonding are tested. To evaluate the bonding strength, the bonded substrates are tested for tensile strength.
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Wang, Kerwin. "Micro-optical components for a MEMS integrated display /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/6047.
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Graham, John Albert. "An analysis of key MIS issues." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27698.
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The purpose of this research was to examine the topical Management Information System (MIS) issues of the day to determine which are most important along with the factors contributing to their importance.
Two professional societies from the greater Vancouver area were surveyed to obtain the MIS practitioners' opinions as to the most important issues. The respondents predominantly held managerial positions while the organizations comprised a wide cross section of sizes and industries.
Data management, planning and integrating technologies were the top rated issues as seen by the aggregation of respondents. A factor analysis identified five higher level issues. An analysis was also performed to determine if importance was related to the demographic variables of company size, industry, respondent position and innovator category. Comparisons were made with previous research with the main trend being the increased importance placed on technical or application system issues versus management issues.Business, Sauder School of
Graduate
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Pekárek, Jan. "Katodové nanostruktury v MEMS aplikacích." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217244.
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The main goal of this work is to introduce new carbon structures - carbon nanotubes. The main objective of this work is to take advantage of the unique characteristic of carbon nanotubes to emit electrons at very low supply voltage.
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Akazan, Justin N'Guessan. "Contribution à l'intégration de la messagerie industrielle MMS dans les systèmes et applications temps réel et répartis." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL067N.
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Compte tenu de l'importance de la communication dans un Système Automatise (SA), le réseau MAP (Manufacturing Automation Protocol) et, en particulier, le protocole MMS (Manufacturing Message Specification) ont été développés afin de permettre la communication et la synchronisation entre des machines hétérogènes dans un SA. Bien que MMS offre des facilités de communication et de synchronisation entre taches réparties, ce protocole présente des faiblesses, notamment au niveau de la prise en compte des contraintes temporelles, alors que celles-ci sont fondamentalement importantes dans les environnements qui utilisent MMS. Par ailleurs, l'utilisation de MMS dans des environnements industriels est limitée en raison de la difficulté inhérente à l'usage de MMS. Cette thèse est une contribution à la résolution de ces problèmes. Elle est structurée en trois parties: 1. Présentation de l'importance de la communication, donc de MMS, dans les systèmes automatisés. 2. Présentation d'un outil de développement d'applications temps réel fondées sur MMS. À partir d'une spécification d'application temps réel et répartie, cet outil, baptisé MMS-Toolkit, permet de générer les services de communication MMS ainsi que les contraintes temporelles provenant de la spécification de l'application. Il permet ainsi d'automatiser, en partie, l'étape de passage d'une architecture fonctionnelle à une architecture opérationnelle. 3. Présentation d'une approche d'extension de MMS du point de vue temps réel. Il s'agit de l'intégration des contraintes de temps dans les objets, services et le protocole MMS afin de mieux prendre en compte la dimension temporelle des applications faisant appel à MMS. Les contraintes de temps exprimées sur les objets et les services n'offrent d'intérêt que si les exécutions auxquelles elles sont associées sont ordonnancées en vue de respecter ces contraintes. Ainsi l'ordonnancement temps réel de taches et de messages devient primordial pour MMS temps réel ; il est donc étudié dans cette partie. La thèse se termine par une conclusion montrant les résultats obtenus et les perspectives envisagées pour poursuivre ce travail
23
Cragun, Rebecca. "Thermal Microactuators for Microelectromechanical Systems (MEMS)." BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/54.
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Microactuators are needed to convert energy into mechanical work at the microscale. Thermal microactuators can be used to produce this needed mechanical work. The purpose of this research was to design, fabricate, and test thermal microactuators for use at the microscale in microelectromechanical systems (MEMS). The microactuators developed were tested to determine the magnitude of their deflection and estimate their force. Five groups of thermal microactuators were designed and tested. All of the groups used the geometrically constrained expansion of various segments to produce their deflection. The first group, Thermal Expansion Devices (TEDs), produced a rotational displacement and had deflections up to 20 µm. The second group, Bi-directional Thermal Expansion Devices (Bi-TEDs) were similar to the TEDs. The difference, as the name implies, was that the Bi-TEDs deflected up to 6 µm in two directions. Thermomechanical In-plane Micromechanisms (TIMs) were the third group tested. They produced a linear motion up to 20 µm. The fourth group was the Rapid Expansion Bi-directional Actuators (REBAs). These microactuators were bi-directional and produced up to 12 µm deflection in each direction. The final group of thermal microactuators was the Joint Actuating Micro-mechanical Expansion Systems (JAMESs). These thermal microactuators rotated pin joints up to 8 degrees. The thermal microactuators studied can be used in a wide variety of applications. They can move ratchets, position valves, move switches, change devices, or make connections. The thermal microactuator groups have their own unique advantages. The TIMS can be tailored for the amount of deflection and output force they produce. This will allow them to replace some microactuator arrays and decrease the space used for actuation. The Bi-TEDs and REBAs are bi-directional and can possibly replace two single direction micro-actuators. The JAMESs can be attached directly to a pin joint of an existing mechanism. These advantages allow these thermal microactuator groups to be used for a wide variety of applications.
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Spadaccini, Christopher M. (Christopher Michael) 1974. "Combustion systems for power-MEMS applications." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17813.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, June 2004."February 2004."
Includes bibliographical references (p. 261-270).
As part of an effort to develop a micro-scale gas turbine engine for power generation and micro-propulsion applications, this thesis presents the design, fabrication, experimental testing, and modeling of the combustion system. Two fundamentally different combustion systems are presented; an advanced homogenous gas-phase microcombustor and a heterogeneous catalytic microcombustor. An advanced gas-phase microcombustor consisting of a primary and dilution-zone configuration is discussed and compared to a single-zone combustor arrangement. The device was micromachined from silicon using Deep Reactive Ion Etching (DRIE) and aligned fusion wafer bonding. The maximum power density achieved in the 191 mm³ device approached 1400 MW/m³ with hydrogen-air mixtures. Exit gas temperatures in excess of 1600 K and efficiencies over 90% were attained. For the same equivalence ratio and overall efficiency, the dual-zone microcombustor reached power densities nearly double that of the single zone configuration. With more practical hydrocarbon fuels such as propane and ethylene, the device performed poorly due to significantly longer reaction time-scales and inadequate fuel-air mixing achieving maximum power densities of only 150 MW/m³. Unlike large-scale combustors, the performance of the gas-phase microcombustors was more severely limited by heat transfer and chemical kinetics constraints. Using all available gas-phase microcombustor data, an empirically-based design tool was developed, important design trades identified, and recommendations for future designs presented. Surface catalysis was identified as a possible means of obtaining higher power densities with storable hydrocarbon fuels by increasing reaction rates. Microcombustors with a similar
(cont.) geometry to the gas-phase devices were fitted with platinum coated foam materials of various porosity and surface area. For near stoichiometric propane-air mixtures, exit gas temperatures approaching 1100 K were achieved at mass flow rates in excess of 0.35 g/s. This corresponds to a power density of approximately 1200 MW/m³; an 8.5-fold increase over the maximum power density achieved for gas-phase propane-air combustion. Low order models including simple time-scale analyses and a one-dimensional steady-state plug flow reactor model, were developed to elucidate the underlying physics and to identify important design parameters. High power density catalytic microcombustors were found to be limited by the diffusion of fuel species to the active surface, while substrate porosity and surface area-to-volume ratio were the dominant design variables. Experiments and modeling suggest that with adequate thermal management, power densities in excess of 1500 MW/m³ and efficiencies over 90% are possible within the microengine pressure loss constraint and the material limits of the catalyst. A materials characterization study of the catalyst and its substrate revealed that metal diffusion and catalyst agglomeration were likely failure modes.
by Christopher M. Spadaccini.
Ph.D.
25
Robinson, Gary Neil 1960. "The commercialization of microelectromechanical systems (MEMS)." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9534.
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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 1999.Includes bibliographical references (leaf 80).
Microelectromechanical systems (MEMS) comprise a set of technologies for the micromachining and electromechanical integration of sensors and actuators. MEMS allow for the radical miniaturization of such devices, as well as for significant improvements in performance and cost over conventionally fabricated mechanical and electrical components. In this thesis, I attempt to assess the value inherent in MEMS innovations and to understand how companies have tried to capture that value. In doing so, I assess the pathways and prospects for the commercialization of MEMS-based devices. I have chosen to focus on two classes of devices: (1) micromachined accelerometers for crash sensing and subsequent air bag deployment in automobiles, and (2) microfabricated chemical sensing and analysis devices for detecting and quantifying gas phase molecules, analyzing complex molecular mixtures, and carrying out high throughput screening of chemical compounds. Accelerometers are an example of a MEMS-based sensor that has almost completely displaced existing electromechanical substitute devices. Applications of MEMS to chemical sensing and analysis, however, are less mature and widespread adoption is less assured. In both cases, I evaluate the opportunities in the new technology from several different perspectives: (1) the factors that affect the transition from innovative technologies to marketable products; (2) the economic, market, and strategic forces that influence the adoption of these products; and (3) the business models of companies that have attempted to profit from MEMS innovations. I conclude the thesis with a chapter on potential strategic market barriers to successful commercialization of MEMS-based devices.
by Gary N. Robinson.
S.M.M.O.T.
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Dawson, Jeremy M. "Through-wafer interrogation of MEMS device motion." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=856.
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Thesis (M.S.)--West Virginia University, 1999.Title from document title page. Document formatted into pages; contains xii, 122 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 119-122).
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Albahri, Shehab. "Mechanical characterization of MEMS devices." Diss., Online access via UMI:, 2007.
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Líčeník, Adam. "Výpočtové modelování dynamiky převodových ústrojí v prostředí MBS." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-449784.
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This diploma thesis is focused on compiling a computational model of the transmission of a Zetor Forterra HSX tractor in the Multibody software MSC ADAMS environment. It analyses the issue of creating gears in terms of vibration and noise. The thesis describes the creation of computational model which is used for simulation of the load conditions during tractor operation. The methodology is applied to a single-stage gearbox in which is verified. Then it is used on a model of a real tractor gearbox. The response of the input load conditions is projected during the forces in the engagement of the gears which are transmitted to the bearings.
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Dieme, Robert. "Characterization of noise in MEMS piezoresistive microphones." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010508.
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Rodríguez, Ramón L. (Ramón Luis) 1976. "Performance measurements of MEMS analysis system." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9473.
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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.Includes bibliographical references (leaves 89-90).
Designers and manufacturers of Micro Electromechanical Systems need accurate instruments to examine the mechanical properties of the devices they fabricate. The research presented in this thesis evaluate's the motion detection capabilities of a MEMS Analysis System. The thesis describes two motion detection schemes and the experiments that have been carried out to characterize them. It provides detailed analysis of the results, as well as suggestions as to how to improve each method. Most importantly, however, it establishes a framework in which future performance tests can be based on.
by Ramón L. Rodríguez.
M.Eng.
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Pedersen, Erik J. (Eric James) 1975. "User interface for MEMS characterization system." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/79998.
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Thesis (Elec.E.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.Includes bibliographical references (leaf 94).
by Erik J. Pedersen.
Elec.E.
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Maddela, Madhurima Ramadoss Ramesh. "Design of MEMS-based tunable antennas, organic transistors and MEMS-based organic control circuits." Auburn, Ala, 2008. http://repo.lib.auburn.edu/2007%20Fall%20Dissertations/Maddela_Madhurima_8.pdf.
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Rathouzský, Matouš. "Elektronický záznam o ukončení výroby." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413265.
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The diploma thesis focuses on the development of the internal production information system of the company Ravensburger Karton s.r.o. based in Polička. The work is divided into two parts, which is the design of an ERD diagram for database development in the data layer and parts of data presentation with user interaction in the presentation layer.
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Wang, Xuan-Qi Tai Yu-Chong. "Integrated parylene micro electro mechanical systems (MEMS) /." Diss., Pasadena, Calif. : California Institute of Technology, 2000. http://resolver.caltech.edu/CaltechETD:etd-09062005-112235.
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Wong, Christine Y. 1975. "Strategic outsourcing of micro-electromechanical systems (MEMS)." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/43726.
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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering; in conjunction with the Leaders for Manufacturing Program at MIT, 2002."June 2002."
Includes bibliographical references (leaves 60-61).
ABB Automation is starting to experiment with Micro-electrical Mechanical Systems (MEMS) as an enabling technology for their products. If ABB's implementation of MEMS is found successful, it will be able to create breakthrough products and services that will revolutionize the market in ABB's industrial sensors, instrumentation and analytical areas. The thesis begins with a description of ABB as a company and then provides a brief overview on MEMS and the challenges ABB faces as it tries to commercialize MEMS enabled products. A literature review is also included to explain how companies can better profit from technological innovations such as MEMS. An analysis of ABB's decision to outsource MEMS is described with multiple frameworks including a vertical integration versus outsourcing model as well as a traditional make or buy decision assessment from a financial perspective. The decision to outsource is valid given the stage of the technological life cycle and the company's resolution to use MEMS in selected products. Since the strategic fit argument is still questionable through much of ABB, outsourcing is a legitimate choice for MEMS. Outsourcing allows a greater amount of flexibility and the least amount of capital investment. Although ABB has decided to outsource its MEMS capabilities, it has to realize that there is a possibility of vertical market failure with MEMS. There are very few suppliers in the market today with potentially fewer in the future as mergers and acquisitions begin to take place once a dominant design is established. This vertical market failure encourages vertical integration and not outsourcing.
Christine Y. Wong.
S.M.
M.B.A.
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Hromek, Jiří. "Komunikace OPC serverů se systémem MES (COMES)." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220142.
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The presenting master`s thesis is concerned with leveraging the CCI system COMES firm COMPAS as OPC client. It was described data transfer architecture based OPC server OPC Client with OPC specifications and standards. Further, it was done the analysis of OPC servers from different manufacturers. The output of the thesis is conception and testing methodology of communication CCI module mode OPC client and OPC servers from different manufacturers.
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Strawser, Richard E. "MEMS Electrostatic Switching Technology for Microwave Systems." University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin974746046.
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Zhang, Ping, and Andrew Dillon. "HCI and MIS: shared concerns (Editorial)." Elsevier, 2003. http://hdl.handle.net/10150/106118.
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The fields of HCI and MIS share many concerns but have traditionally not shared
literatures, theories and results. This special issue is a first attempt at bridging the disciplinary
divide. In this paper, the history of both fields is briefly outlined and reasons for the
independence of eachare examined. The criteria for paper inclusion are outlined and each
paper is briefly introduced.
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Willis, Oral R. "Characterizing fluoropolymeric materials for microelectronics and MEMS packaging." Diss., Online access via UMI:, 2007.
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Kim, Seong Jin Dean Robert Neal. "An evaluation system for mechanical and electrical characterization of MEMS devices." Auburn, Ala, 2009. http://hdl.handle.net/10415/1592.
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Erbes, Andreja. "MEMS resonators for low power wireless communications and timing applications." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708912.
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Handtmann, Martin. "Dynamische Regelung mikroelektromechanischer Systeme (MEMS) mit Hilfe kapazitiver Signalwandlung und Kraftrückkoppelung." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973065613.
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Agrawal, Deepak Kumar. "Nonlinear effects and synchronization in MEMs oscillators." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648280.
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Jalůvka, Jakub. "Digitalizace toku dat výrobního procesu jako nástroj pro efektivní řízení výroby." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417473.
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The master thesis deals with the issue of proposing a solution which eliminates negative effects in an automotive company. The solution suggested is processed on the basis of a theoretical part (modern trends in production) and a detailed analysis. The final solution is a new operational layer of production management, using the implementation of MES system.
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Chan, Yiu-wing Jacky, and 陳耀榮. "MIS in a multinational company." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31264591.
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OH, KWANGWOOK. "DEVELOPMENT OF MAGNETICALLY ACTUATED MICROVALVES AND MICROPUMPS FOR SURFACE MOUNTABLE MICROFLUIDIC SYSTEMS." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin983300097.
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Cichra, Petr. "Výběr a implementace informačního systému." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2021. http://www.nusl.cz/ntk/nusl-444593.
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This master’s thesis deals with the selection and implementation of an information system for the Pavlovín winery s.r.o. In this thesis is firstly introduces the theoretical foundation necessary for the understanding of this topic and subsequently is analysed the current state of the company with an emphasis on the information system and production processes related to process procedures in the field of cellar management. The penultimate part of the thesis is connected with the evaluation of the information system variant and the subsequent selection of the optimal variant, its implementation is described in the last chapter using the technique of project management.
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Tang, Xudong 1967. "A complete MEMS analysis system and implementation." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86552.
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Czarny, Jaroslaw. "Conception, fabrication et caractérisation d'un microphone MEMS." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0003/document.
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Les microphones à électret dédiés à l'électronique grand public et les applications médicales (les audioprothèses) ont atteint les limites de la miniaturisation. Depuis la sortie du premier microphone basé sur une technologie microsystème sur silicium (MEMS: Micro-Electro-Mechanical Systems), les microphones à électret sont progressivement remplacés par les microphones MEMS. Les MEMS utilisent le silicium car il offre des caractéristiques mécaniques exceptionnelles avec de bonnes propriétés électriques et la technologie de fabrication est maintenant bien maîtrisée. La plupart des microphones MEMS qui sont décrits dans la littérature sont constitués d’une membrane qui vibre en dehors du plan du capteur, et utilisent la transduction capacitive. La miniaturisation de tels microphones est limitée car leur sensibilité est liée à la valeur de la capacité qui dépend de la taille de la membrane. En outre, les capteurs capacitifs sont très sensibles aux capacités parasites et aux non-linéarités. Cette thèse présente une nouvelle architecture de microphone MEMS qui utilise des micro-poutres qui vibrent dans le plan capteur. La transduction du signal est réalisée par des nanojauges piézorésistives intégrées dans le microsystème et attachées aux micro-poutres. Ce système de détection original ne présente pas les inconvénients de la détection capacitive et à la différence des piézorésistors classiques intégrés dans la membrane de silicium, les nanofils suspendus permettent d’éliminer les courants de fuite. De plus, l'amélioration de la détection est possible puisque le coefficient piézo-résistif longitudinal est inversement proportionnel à la section du nanofil. Les fluctuations de pression acoustique entraînent les déviations des micro-poutres qui produisent une concentration de contraintes dans les nanogauges. Le comportement du capteur, que l’on cherche à modéliser, est lié à des phénomènes mécaniques, acoustiques et électriques qui sont couplés. En raison des dimensions micrométriques du MEMS, les effets des dissipations thermique et visqueuse doivent être pris en compte dans le comportement acoustique. Pour prédire de façon fiable le comportement du capteur, deux modèles vibroacoustiques sont utilisés: un modèle éléments finis basé sur l'ensemble des équations de Navier-Stokes linéarisées et un modèle approché basé sur un schéma à constantes localisées (représentation par circuit électrique équivalent). Les deux modèles sont complémentaires dans le processus de conception pour déterminer la réponse en fréquence et le taux de bruit du capteur. Le travail est complété par la description des processus technologiques et les défis liés à la fabrication du prototype. Puis deux approches pour la caractérisation fonctionnelle du microphone MEMS sont présentées, la première en tube d’impédance, la seconde en champ libreElectret microphones dedicated to consumer electronics and medical applications (hearing aids) have reached the miniaturization limits. Since the release of the first microphone based on Silicon micromachining, electret microphones are constantly replaced by MEMS microphones. MEMS (Micro-Electro-Mechanical Systems) microphones use Silicon that provides exceptional mechanical characteristics along with good electric properties and mature fabrication technology. Regardless of the transduction principle (capacitive, piezoresistive, piezoelectric, optical), all of the MEMS microphones reported in the state of the art literature are based on a membrane deflecting out of the plane of the base wafer. Most of the reported microphones and all of the commercially available MEMS use capacitive transduction. Downscaling of capacitive microphones is problematic, since the sensitivity depends on capacitance value. Moreover capacitive sensors suffer of high sensitivity to parasitic capacitance and nonlinearity. The drawbacks of capacitive detection may be overcome with use of piezoresistive properties of Silicon nanowires. Unlike the classical piezoresistors integrated into silicon membrane, suspended nanowires do not suffer of leakage current. Further improvement of piezoresistive detection is possible since the longitudinal piezoresistive coefficient rises inversely proportional to nanowire section. This thesis presents the considerations of novel MEMS microphone architecture that uses microbeams which deflect in the plane of the base wafer. Signal transduction is achieved by piezoresistive nanogauges integrated in the microsystem and attached to the microbeams. Acoustic pressure fluctuations lead to the deflection of the microbeams which produces a stress concentration in the nanogauges. Accurate simulations of the discussed transducer couple acoustic, mechanical and electric behavior of the system. Due to micrometric dimensions of the MEMS acoustic system, thermal and viscous dissipative effects have to be taken into account. To reliably predict the sensor behavior two acoustic models are prepared: the complete Finite Element Model based on the full set of linearized Navier-Stokes equations and the approximative model based on the Lumped Elements (Equivalent Cirtuit Representation). Both models are complementary in the design process to finally retrieve the frequency response and the noise budget of the sensor. The work is completed by the description of the technological process and the challenges related to the prototype microfabrication. Then the approach to the MEMS microphone characterization in pressure-field and free-field is presented
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Milne, Stuart Brian. "Thin-film silicon based MEMS actuators and materials." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609898.
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