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Dissertations / Theses on the topic 'Electric wiring'
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1
Long, Chan Fai. "Design of a knowledge-based inspection of general electrical systems." Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3950611.
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Łękawa-Raus, Agnieszka Ewa. "Carbon nanotube fibres for electrical wiring applications." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608287.
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Chahal, Premjeet. "Integral resistors and capacitors for mixed-signal packages using electroless plating and polymer-ceramic nanocomposites." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15518.
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Jachim, Jenny Ann. "The examination of the effect of three water soluble fluxes on biased comb patterns exposed to high humidity or condensing environments." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/19573.
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Chen, Junxiang. "Study of 270VDC system application." Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/9477.
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As increasing power requirement in more or all electric aircraft, electric power
system is required to be more efficient and lower in weight. Among the current
power generation technologies, 115V variable frequency (VF) system and
270VDC system are regarded as the two optimal options for future use in MEA
or AEA. Therefore, it is very important to compare their relative merits in order
to determine the optimal choice on the primary power type.
As the reviewed literature mainly represents the comparison between 270VDC
system and 115V constant frequency system, it is very necessary to conduct
the comparison between 270VDC system and 115V/VF system. The aim of this
study is to grasp the nature of these systems and evaluate these two systems in
terms of some engineering aspects.
Literature regarding the power generation technology is first investigated. Based
on initial comparison, the 270VDC brushless generating system and 115V VF
generating system are selected for this study. Before conducting system
architecture design and wiring system design, the load requirement analysis
and optimization are conducted. Finally, a comparison between these two
systems will be made in terms of weight, power off take, minimum voltampere
(VA) capacity requirement, voltage drop, reliability, life cycle cost and risk.
The results show that the 270VDC system is superior to the115V/VF system in
terms of weight and efficiency. With regards to system reliability, the 270VDC
system can be designed as either an active parallel system or a standby system
while the 115V/VF system can only be designed as a standby redundant
system. As far as risk is concerned, the 270VDC is more dangerous than the
115V/VF system in terms of arcing risk and corona discharge. All in all, the
270VDC system can be considered as the optimal choice for future use in AEA
or MEA.
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Huang, Jian, Pei Di, Toshio Fukuda, 敏男 福田, and Takayuki Matsuno. "Fault-tolerant Mating Process of Electric Connectors in Robotic Wiring Harness Assembly Systems." IEEE, 2008. http://hdl.handle.net/2237/11149.
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Huang, Jian, Toshio Fukuda, 敏男 福田, and Takayuki Matsuno. "Model-Based Intelligent Fault Detection and Diagnosis for Mating Electric Connectors in Robotic Wiring Harness Assembly Systems." IEEE, 2008. http://hdl.handle.net/2237/11173.
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Chabane, Sofiane. "A modified enhanced transmission line theory as a solution to wiring configurations inconsistent with the classical transmission line theory - Application to vehicle harnesses." Thesis, Rennes, INSA, 2014. http://www.theses.fr/2014ISAR0013.
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Cette thèse présente, dans un premier temps, une nouvelle approche pour traiter les lignes de transmission, appelée la Théorie des Lignes de Transmission Améliorée et Modifiée (TLTAM). Cette extension du formalisme classique de la théorie des lignes de transmission est directement dérivée des équations de Maxwell et ne se limite pas à la seule prise en compte du mode transverse électromagnétique (TEM). Tout en conservant la simplicité du formalisme classique, cette extension aboutit à la définition de paramètres linéiques évolués et associés au mode antenne de la ligne de transmission. Cette solution présente l’avantage d’être compatible avec les noyaux de calcul existants, tout en palliant certaines limitations de la théorie des lignes de transmission (TLT) classique. LA TLTAM est tout d’abord définie pour le cas élémentaire d’une ligne de transmission à conducteur unique. Elle est ensuite généralisée au cas d’un nombre quelconque de conducteurs. Les matrices de paramètres linéiques correspondants sont alors définies. Les capacités de cette nouvelle théorie sont démontrées et validées au moyen de confrontations avec la solution directe des équations de Maxwell et de résultats de mesure. Dans un deuxième temps, le traitement d’une ligne de transmission multiconducteur située à distance d’un plan de référence conducteur est effectué au moyen d’une nouvelle approche désignée sous le nom de Théorie des Lignes de Transmission à Double Référence Intégrée (TLTDRI). Cette approche permet de simplifier l’évaluation des paramètres linéiques du faisceau en scindant le problème initial en deux sous-ensembles de lignes de transmission couplées. Le premier sous-ensemble est composé d'un fil conducteur du faisceau choisi arbitrairement et le plan de référence et constitue le sous-ensemble externe. Le deuxième sousensemble est composé uniquement des fils conducteurs du faisceau, en l’absence du plan de référence et constitue un sous-ensemble interne dont la référence locale est le fil choisi précédemment. On montre alors que seul le sous-ensemble externe nécessite le calcul de paramètres linéiques évolués associés à TLTAM. Le calcul des paramètres linéiques dans le système à référence unique constituée par le plan de référence, est reconstitué à partir de formules de passage permettant leur expression à partir des paramètres linéiques des deux sousensembles. Cette approche est validée et ses résultats sont en très bon accord avec ceux fournis par un calcul numérique direct des équations de Maxwell ainsi que ceux de la TLTAM. Elle permet une simplification très significative du traitement de l’interaction entre le faisceau de câble et la structure conductrice de référenceThis thesis presents, in a first step, a new approach to deal with transmission lines called the Modified Enhanced Transmission Line Theory (METLT). This extension of the classical formalism of the transmission line theory (TLT) is directly derived from Maxwell's equations without the restriction to the transverse electromagnetic (TEM) mode. This extension leads to the definition of enhanced per-unit-length (p.u.l.) parameters taking into account the antenna mode of the transmission line, while it keeps the simplicity of the classical formalism. This solution presents the advantage of being compatible with the existing TLT solvers while overcoming some limitations of the classical TLT. The METLT is firstly developed for the simple case of a single conductor transmission line. It is then generalized to the case of any number of conductors. The corresponding matrices of the p.u.l. parameters are then calculated. The capabilities of this new theory are demonstrated and validated by the means of comparisons with results obtained through a rigorous resolution of Maxwell's equations and measurements results. In a second step, a multi-conductor transmission line sufficiently far from the reference ground plane is assessed through a new approach called: Embedded Double Reference Transmission Line Theory (EDRTLT). This approach allows the simplification of the calculation of the harness p.u.l. parameters by splitting the first set of wires above a ground plane into two subsets of coupled transmission lines. The first subset consists in a conducting wire chosen arbitrarily and the reference ground plane and forms the external subset. The second subset consists only in the conducting wires of the harness, in the absence of the ground plane, and forms an internal subset which local reference is the wire chosen previously. We show that only the external subset requires the calculation of the enhanced p.u.l. parameters with the METLT. The calculation of the harness p.u.l. parameters in the system with a single reference, which is the ground plane only, is made through transformation formulae that allow their extraction from the p.u.l. parameters of the two subsets. This approach is validated and its results are in a very good agreement with those obtained by a rigorous resolution of Maxwell's equations and those of the METLT. It allows a great simplification to assess the interaction between the harness and the reference conducting structure
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Arbab, M. N. "The long term degradation of insulation by electrical treeing." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382783.
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Lawee, Ian P. (Ian Philip). "Reducing development cycle time for aircraft electrical wiring systems." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11530.
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Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1995.Includes bibliographical references (p. 93-94).
by Ian P. Lawee.
M.S.
11
Jullesson, David. "Wiring liposomes and chloroplasts to the grid with an electronic polymer." Thesis, Linköpings universitet, Biomolekylär och Organisk Elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-97517.
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We present a novel thylakoid based bio-solar cell capable of generating a photoelectric current of 0.7 µA/cm2. We have introduced an electro conductive polymer, PEDOT-S, to the thylakoid membrane. PEDOT-S intervenes in the photosynthesis, captures electrons from the electron transport chain and transfers them directly across the thylakoid membrane, thus generating a current. The incorporation of the electro conductive polymer into the thylakoid membrane is therefore vital for the function of the bio-solar cell. A liposomal model system based on liposomes formed by oleic acid was used to develop and study the incorporation of PEDOT-S to fatty acid membranes. The liposomes allow for a more controllable and easily manipulated system compared to the thylakoid membrane. In the model system, PEDOT-S could successfully be incorporated to the membrane, and the developed methods were applied to the real system of thylakoid membranes. We found that a bio-compatible electrolyte and redox couple was required for this system to function. The final thylakoid based bio-solar cell was evaluated according to performance and reproducibility. We found that this bio-solar system can generate a low but reproducible current.
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Altamura, Lucie. "Bio-inspired protein nanowire : electrical conductivity and use as redox mediator for enzyme wiring." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENY006.
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Nous avons développé un nano-fil conducteur, constitué uniquement de protéines et bio-inspiré des nano-fils bactériens conducteurs. Pour cela, une protéine chimère a été créée par l'association d'une protéine prion capable de s'auto-assembler en fibre et d'une métalloprotéine, une rubrédoxine, capable d'effectuer des transferts d'électrons. Comme montré par des techniques de microscopies et de spectroscopies (absorbance UV-visible et RPE), la protéine chimère est capable de former des fibres à la surface desquelles on retrouve les rubrédoxines. Les propriétés électroniques des nano-fils ont été caractérisées par des mesures courant-tension sur des échantillons secs et par électrochimie. Les mesures courant-tension ont montré que la conduction se faisait par plusieurs mécanismes. Les acides aminés aromatiques présents au centre du domaine prion semblent impliqués dans un des mécanismes de conduction. Les mesures électrochimiques ont quant à elles montré une conduction par sauts entre rubrédoxines. De plus, nous avons utilisé les nano-fils comme interface entre une enzyme, la laccase, et une électrode. Un courant électrocatalytique dû à la réduction de l'oxygène a été obtenu prouvant ainsi la capacité de nos nano-fils à agir comme médiateurs d'électrons. Les nano-fils conducteurs faits de protéines sont une structure intéressante pour comprendre le transport de charges dans les systèmes biologiques et sont également très prometteurs pour le développement de la bioélectronique et plus particulièrement de biocapteurs et de biopiles enzymatiquesThe discovery of bacterial nanowires able to transport electrons on long range within biofilms and transfer them to electrodes is very promising for the development of bioelectronics and bio-electrochemical interfaces. However, their assembling process, their molecular composition and the electron transport mechanism are not fully understood yet. We took inspiration from bacterial nanowires to design conductive protein nanowires. We fused the sequence of a rubredoxin, an electron transfer iron-sulfur protein, to the sequence of HET-s(218-289), a prion domain that forms amyloid fibril by self-assembling under well-defined conditions. The resulting chimeric protein forms amyloid fibrils and displays redox proteins organized on the surface as shown by microscopy techniques and UV-Vis and EPR spectroscopy. Electron transfer mechanisms were studied in “dry state” current-voltage (I-V ) measurements and as hydrated film by electrochemistry. Dry state measurements allowed to evidence several conduction pathways with a possible role of aromatic residues in the conduction. Electrochemistry revealed electron transport by hopping between adjacent redox centers. This property allowed the use of our protein as mediator between a multicopper enzyme (laccase) and an electrode for electrocatalytic reduction of oxygen. These protein nanowires are interesting structures for the study of charge transport mechanisms in biological systems but are also very promising for the design of biosensors and enzymatic biofuel cells
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Plytus, H. R., and Г. Р. Плитус. "Special aspects of aircraft wiring shielding." Thesis, National aviation university, 2021. https://er.nau.edu.ua/handle/NAU/50501.
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1. Innovative cables and cabling solutions for next-generation Aerospace – Nexans, 2015. – 24 p.
2. Controlling the EMI effects of aircraft avionics [web resource]. - Access mode: https://cutt.ly/PxIMPTr
3. Determining When to Shield Aircraft Wiring [web resource]. - Access mode: https://cutt.ly/dxI1wKs
4. Cables Shield in Aircraft, Wilson G. Salgado, Miguel G. Molina – 15th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Global Partnerships for Development and Engineering Education”, United States, 2017. – 5 p.Shielding is one of the most reliable and popular ways to avoid electromagnetic interference (EMI) exposure to wiring. This, of course, increases the reliability, but there is no need to use the shield on all wires of the aircraft, and it also has some disadvantages and extra costs. Therefore, with the aim of the correct choice of wire (shielded or not) electrical wiring interconnection system (EWIS) designers need to conduct an appropriate analysis of the transmitted data, its frequency, power, etc.
Екранування — це один з найнадійніших і найпопулярніших способів уникнути електромагнітних перешкод. Що, звичайно, підвищує надійність, але нема потреби використовувати екранування на всіх проводах повітряних суден через те, що ця процедура має деякі недоліки та додаткові витрати. Тому, з метою правильного вибору дроту (екранований чи ні) конструкторам системи з'єднань електропроводки необхідно проводити відповідний аналіз даних, що передаються по дроту, з якою частотою, потужністю тощо.
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Clavel, Edith. "Vers un outil de conception de cablage : le logiciel InCa." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0157.
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L'augmentation du niveau technologique des convertisseurs statiques d'Electronique de Puissance inhérente aux perfonnances foequentielles accrue. . . . Des semi-oenducteurs et au besoin de compacité lui aussi grandissant rend leur coaception de plus en plus délicate. L'utilisation de composants modem. Es,à fort pouvoir de commutation ne permet plus de négliger lel\. CaractériMiquel\ électrique~ de~ connexionl\ tant vi~-à-vis del\ surten~ions inadmil\sibles lors de )'ouvenure del\ semi-conducteur!\ que pour leur mise en parallèle dans le~ !\tructures de forte pui~sance. La caraetéri~ation des impédances de câblage avant la réalisation du prototype reste la voie privilégiée dans la conception des structures qui permettra de diminuer les coûts et les délais. Pour ce faire. La modélisation des connexions passe par la simulation. _ InCa. Logiciel destiné à la prédétermination des inductances de câblage en utilisant la méthode PEEC. A été développé pour ~c;urer cette étape de la conception. Une méthodologie de modélisation a été mise au point. Elle consiste à rechercher le schéma électrique équivalent des connexions en prenant en compte aussi bien l'effet de la fréquence, des connexions voisines que la présence d'un plan de masse. Le couplage automatique de InCa avec un simulateur électrique, SPICE par exemple. Permet d'intégrer les résultats de la simulation sur Inca et d'obtenir les formes en courant et tension du convertisseur. InCa. Dont la base de données, orientée objets. Est adaptée à la méthode de résolution. A pennis, de caractériser différentes technologies de câblage. Allant du circuit intégré. De la technologie hybride jusqu'à la technologie bus barn: de plus en plus utilisée dans les structures d'Electronique de PuissanceThe augmentation of technological level of power static converters due to increasing frequency performances of semi-conductors and due to the need of redueing the sizes of the structures makes their design more and more tricky. The use of up-to-date components with high power of commutation does not allow to negleet the electrical characteristies of connections not only face to inadmissible overvoltages when semiconductors turn on but also when for their a. ~sociation in parallel in high power structures. The characterization of cabling impedances before the realization of the prototype remains the privileged way in the design of structures which allows to reduce costs and delays. For this, the simulation is necessary to model connections. InCa. Simulation 1001 dedicated 10 the characterization of cabling inductances using PEEC method' has been developped to ensure this stage of design. A method for modelling has been established. It consists in looking for the equivalent electrical circuit of connections considering not only the skin and proximity em~Cb but al~o the presence of a ground plane. The automatÎc coupling of InCa with an clectrical simulation tool such as SPICE atlows to use the results given by InCa in order to obtain the cuurent and voltage wave fonn. ~ of the converter. InCa whose database is adapted to the solving method has a110wed to characterize varioul\ cabling technologies from integrclted circuit. Hybrid technology to bus bar technology more and more used in the power electronics structures
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Moffat, Brian G. "Micro-manufactured Rogowski coils for fault detection of aircraft electrical wiring and interconnection systems (EWIS)." Thesis, Heriot-Watt University, 2014. http://hdl.handle.net/10399/2847.
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Aircraft wiring failures have increased over the last few years resulting in arc faults and high-energy flashover on the wiring bundle, which can propagate down through aircraft Electrical Wiring and Interconnect Systems (EWIS). It is considered cost prohibitive to completely rewire a plane in terms of man hours and operational time lost to do this, and most faults are only detectable whilst the aircraft is in flight. Temperature, humidity and vibration all accelerate ageing and failure effects on EWIS. This research investigates methods of in-situ non-invasive testing of aircraft wiring during fight. Failure Mode Effects and Analysis (FMEA) was performed on legacy aircraft EWIS using data obtained from RAF Brize Norton. Micro-Electro-mechanical- Systems (MEMS) were evaluated for use in a wire monitoring system that measures the environmental parameters responsible for ageing and failure of EWIS. Such MEMS can be developed into a Health and Usage Monitoring MicroSystem (HUMMS) by incorporating advanced signal processing and prognostic software. Current and humidity sensors were chosen for further investigation in this thesis. These sensors can be positioned inside and outside cable connectors of EWIS so that arc faults can be reliably detected and located. This thesis presents the design, manufacture and test of micro-manufactured Rogowski sensors. The manufactured sensors were benchmarked against commercial high frequency current transformers (HFCT), as these devices can also detect high frequency current signature due to wire insulation failure. Results indicate that these sensors possess superior voltage output compared to the HFCT. The design, manufacture and test of a polymer capacitive humidity sensor is also presented. Two different types of polymer were reviewed as part of the evaluation. A feature of the sensor design is recovery from exposure to chemicals found on wiring bundles. Current and humidity sensors were demonstrated to be suitable for integrating onto a common substrate with accelerometers, temperature sensors and pressure sensors for health monitoring and prognostics of aircraft EWIS.
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Poole, Philip John. "Investigation into the application of semi-custom I.C. techniques to an advanced automotive multiplexed wiring harness." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328216.
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Mee, Christine. "Spectrophotometric studies of individual components of a cupric chloride etchant used in printed wiring board manufacturing processes /." Online version of thesis, 1986. http://hdl.handle.net/1850/8841.
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Egner-Duppich, Christel. "Vertrauen beim Online-Kauf : Entstehung und Wirkung von Vertrauen in konsumentenbezogenen Online-Kaufprozessen /." Hamburg : Kovač, 2008. http://d-nb.info/988362422/04.
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Li, Weiping. "Large-area, low-cost via formation and metallization in multilayer thin film interconnection on Printed Wiring Boards (PWB)." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19641.
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Qin, Xian. "Compliant copper microwire arrays for reliable interconnections between large low-CTE packages and printed wiring board." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53532.
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The trend to high I/O density, performance and miniaturization at low cost is driving the industry towards shrinking interposer design rules, requiring a new set of packaging technologies. Low-CTE packages from silicon, glass and low-CTE organic substrates enable high interconnection density, high reliability and integration of system components. However, the large CTE mismatch between the package and the board presents reliability challenges for the board-level interconnections. Novel stress-relief structures that can meet reliability requirements along with electrical performance while meeting the cost constraints are needed to address these challenges. This thesis focuses on a comprehensive methodology starting with modeling, design, fabrication and characterization to validate such stress-relief structures. This study specifically explores SMT-compatible stress-relief microwire arrays in thin polymer carriers as a unique and low-cost solution for reliable board-level interconnections between large low-CTE packages and printed wiring boards.
The microwire arrays are pre-fabricated in ultra-thin carriers using low-cost manufacturing processes such as laser vias and copper electroplating, which are then assembled in between the interposer and printed wiring board (PWB) as stress-relief interlayers. The microwire array results in dramatic reduction in solder stresses and strains, even with larger interposer sizes (20 mm × 20 mm), at finer pitch (400 microns), without the need for underfill. The parallel wire arrays result in low resistance and inductance, and therefore do not degrade the electrical performance. The scalability of the structures and the unique processes, from micro to nanowires, provides extendibility to finer pitch and larger package sizes.
Finite element method (FEM) was used to study the reliability of the interconnections to provide guidelines for the test vehicle design. The models were built in 2.5D geometries to study the reliability of 400 µm-pitch interconnections with a 100 µm thick, 20 mm × 20 mm silicon package that was SMT-assembled onto an organic printed wiring board. The performance of the microwire array interconnection is compared to that of ball grid array (BGA) interconnections, in warpage, equivalent plastic strain and projected fatigue life.
A unique set of materials and processes was used to demonstrate the low-cost fabrication of microwire arrays. Copper microwires with 12 µm diameter and 50 µm height were fabricated on both sides of a 50 µm thick, thermoplastic polymer carrier using dryfilm based photolithography and bottom-up electrolytic plating. The copper microwire interconnections were assembled between silicon interposer and FR-4 PWB through SMT-compatible process. Thermal mechanical reliability of the interconnections was characterized by thermal cycling test from -40°C to 125°C. The initial fatigue failure in the interconnections was identified at 700 cycles in the solder on the silicon package side, which is consistent with the modeling results. This study therefore demonstrated a highly-reliable and SMT-compatible solution for board-level interconnections between large low-CTE packages and printed wiring board.
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Bednář, Vojtěch. "Rekonstrukce elektrické části vytloukacího roštu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241115.
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This Diploma work is concerned with the design of project documentation for discharging shakeout machine electric installation. This work continues in the Semestral project 2 in which the background of a new machine was made. Then, this work deals with the replacement of a switch room with required devices including the design of a new connecting cables and power streams. In the first part, the work deals with the control part of the device and the design of control and signal cables including the product documentation of the device. In the second part, the work deals with the proposal of building electro installation in which a new lighting and its use is described. The last part focuses on the coordination during the realization of a suggested device. In this part, all problems coming from the particular working procedures including a proposal of possible solutions are described. According to the project documentation and following realization, the documentation of final concept reflecting the real status of the device is described.
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Khandelwal, Avinash 1987. "The wiring diagram of antennal lobe and mapping a brain circuit that controls chemotaxis behavior in the Drosophila larva." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/663806.
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Drosophila larvae present unique opportunity for anatomical and functional mapping of their nervous system because of features such as numerical simplicity of neurons its nervous system is composed of, and ability to exhibit quantifiable behaviors such as chemotaxis. Here, we mapped entire antennal lobe of larval Drosophila with one of its circuits responsible for controlling sensorimotor transformation in lateral horn (LH) (higher brain) through a single brain descending neuron using electron microscopic 3D reconstruction.
In antennal lobe, we reported a canonical circuit with uniglomerular projection neurons (uPNs), working to relay gain-controlled ORN activity to higher brain centers like Mushroom body and lateral horn. We also found a parallel circuit with multiglomerular projection neurons (mPNs) and hierarchically organized local neurons (LNs) selectively integrating signal from multiple ORNs at the first synapse with LN-LN connectivity putatively implementing gain control mechanism that can potentially switch from computing distinguished odor signals through panglomerular inhibition to allowing system to respond to faint aversive odor in an environment rich with strong appetitive odors.
We also reconstructed and studied one of the olfactory connected circuits in the LH that was found to be influencing chemotaxis behavior in larva through a single brain descending neuron, PVM027. We found that this neuron was responsible in controlling stop response of chemotaxis behavior. EM reconstruction revealed its connection with variety of motor systems and SEZ descending neurons in the VNC. Connections were revealed with the peristaltic wave propagation circuit of larva, and PVM027 was found to be implementing stop by terminating and ceasing the origin of forward peristaltic waves.Las larvas de Drosophila ofrecen una oportunidad única para el mapeo anatómico y funcional de su sistema nervioso debido a propiedades como la simplicidad numérica de neuronas que componen su sistema nervioso y su habilidad de exhibir comportamientos cuantificables como la quimiotaxis. En este estudio hemos mapeado el lóbulo antenal de la larva de Drosophila con uno de sus circuitos responsable de controlar la transformación sensorial-motora en el asta lateral (LH) (cerebro superior) a través de una sola neurona descendiente usando la reconstrucción 3D para microscopia electrónica. Hemos presentado, en el lóbulo antenal, un circuito canónico con proyecciones neuronales uniglomerulares (uPNs) responsables de transmitir aumentos controlados de actividad desde sus ORN* hasta centros superiores del cerebro como el cuerpo fungiforme y el asta lateral del protocerebro. Hemos descubierto también un circuito paralelo formado por neuronas con proyecciones multiglomerulares (mPNs) y neuronas locales (Lns), organizadas jerárquicamente, que integran selectivamente señales desde múltiples ORNs a nivel de primera sinapsis con conectividad LN-LN implementando aparentemente un mecanismo de aumento de control que potencialmente puede intercambiar señales olfativas distintas computacionalmente a través de inhibición panglomerular permitiendo al sistema responder a olores vagamente aversivos en un ambiente rico en fuertes olores apetitosos. También hemos reconstruido y estudiado uno de los circuitos olfativos que conectan con el LH conocido por influenciar la quimiotaxis de la larva a través de un sola neurona cerebral descendiente, la PVM027. Hemos descubierto que dicha neurona es la responsable de controlar la respuesta stop en el comportamiento de quimiotaxis. La reconstrucción por EM revela su conexión con una variedad de sistemas motores así como neuronas descendientes SEZ en el VNC. Observamos dichas conexiones gracias al circuito de propagación de onda peristáltica de la larva, y descubrimos que la PVM027 implementa la señal de stop terminando e interrumpiendo el origen de la onda peristáltica.
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Krejčí, Jan. "CNC řízení frézky." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442459.
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This diploma thesis deals with rebuild of manual drill-mill machine BF20L into CNC mill machine, 3D model of that and eventual control using PLC. All axes are powered by stepper motors, with encoders, connected to control cards and industrial computer from company Beckhoff. For this control is made full switchboard, supplemented by electrical wiring diagram. Program control along with visualization is made in software TwinCAT 3. Drill-mill machine can be controlled manually or automatically by program.
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Marikkar, Fathima Saneeha. "Molecular Design of Electrode Surfaces and Interfaces: For Optimized Charge Transfer at Transparent Conducting Oxide Electrodes and Spectroelectrochemical Sensing." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/193952.
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This dissertation has focused on i) optimizing charge transfer rates at indium-tinoxide (ITO) electrodes, and ii) characterization of the supramolecular structure and properties of ultra thin surface modifier films on modified electrodes for various device applications. Commercial ITO surfaces were modified using conducting polymer thin film architectures with and without various chemical activation procedures. Ferrocene derivatives were used as redox probes, which showed dramatic changes in electron transfer rate as the SA-PANI/PAA layers were added to the ITO surface. Highest rates of electron transfer were observed for DMFc, whose oxidation potential coincides with the potential region where these SA-PANI/PAA films reach their optimal electroactivity. Apparent heterogeneous electron transfer rate constants, kS, measured voltammetrically, were ca.10 x higher for SA-PANI/PAA films on ITO, versus clean ITO substrates. These films also showed linear potentiometric responses with retention of the ITO transparency with the capability to create smoothest films using an aqueous deposition protocol, which proved important in other applications. ITO electrodes were also modified via chemisorption of carboxy functionalized EDOTCA and electropolymerization of PEDOTCA/PEDOT copolymers, when properly optimized for thickness and structure, enhance voltammetrically determined electron transfer rates (kS) to solution probe molecules, such as dimethylferrocene (DMFc). Values of kS ≥ 0.4 cm•sec⁻¹, were determined, approaching rates seen on clean gold surfaces. ITO activation combined with formation of these co-polymer films has the effect of enhancing the electroactive fraction of electrode surface, versus a non-activated, unmodified ITO electrode, which acts as a “blocked” electrode. The electroactivity and spectroelectrochemistry of these films helped to resolve the electron transfer rate mechanism and enabled the construction of models in combination with AFM, XPS, UPS and RAIRS studies. The surface topography, structure, composition, work function and contact angle, also revealed other desirable properties for molecular electronic devices. The carboxylic functionality of the EDOTCA molecule adds more desirable properties compared to normal PEDOT films, such as favoring the deposition of smooth films, increasing the optical contrast, participating in hydrogen-bonding, chemisorption to oxide surface, self-doping and providing a linker for incorporation of different functional groups, new molecules, or nanoparticles. Periodic sub-micron electrode arrays can be created using micro-contact printing and electropolymerization. The sinusoidal modulation of the refractive index of such confined conducting polymer nanostructures or nanoparticle stripes allows efficient visible light diffraction. The modulation of the diffraction efficiency at PANI and PEDOT gratings in the presence of an analytical stimulus such as pH or potential demonstrate the sensing capability at these surfaces. The template stripped gold surfaces that are being developed in our lab demonstrate several advantages over commercially available evaporated gold films especially for nanoscale surface modification.
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Benešová, Lucie. "Počítačová podpora projektování datových rozvodů - projektová laboratoř." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218815.
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This thesis is concerned with data wiring infractructure. In the theoretical part the basic technology of the LAN networks is described as well as its parts, such as HUB and switch. Various types of transfer paths used in data wiring are briefly mentioned. They included coaxial cable, which were then replaced by shielded twisted pair and in future the fibre optics cables will be used instead. The shielded twisted pair operates on structured cabelling, which is guided by central principles in designing, which then can guarantee 15 years of good service. The most used cables 5e and 6 are described. The next chapter describes the endings of cables and connectors as well as the principles of patch pannels and patch cables. The following parts focus on the fibre optics networks, because they are the networks of the future. The types of fibre optics cables are described together with networks standards, the minimal fibre radius and innovations such as WDM or micropipes. There is also a resume of the ČSN norms, which are important for this thesis, concerning issues of the ways how to lay cables, placing of the communications etc. In the practical part, the various softwares for designing data wiring infractructure are studied and compared. As the most convinient for student proposals the AutoCAD Electrical 2011 has been chosen. This design software is studied from the point of view of its user interface and basic rules of behaviour. The functions of the menus and pripary settings are described. In the last part of the thesis the lesson is provided. The lesson should give students basic information and opportunity to design a basic data wiring infrastructure for a building.
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Sabel, Tatjana. "Wirkung der Marke bei Onlinekäufen : eine empirisch gestützte Analyse /." Hamburg : Kovač, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016233489&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Parma, Lukáš. "Hodnocení efektivnosti technologií pro inteligentní domácnosti." Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-149920.
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This thesis deals with the study of home automation systems. The main goal of this thesis is to prove their effectiveness. The sample project shows how to calculate the efficiency and profitability of investment in the home automation systems. The result of this work is a methodology for determining the efficiency of investment projects into automation systems. The work is divided into two parts. The theoretical part is to provide the reader with the basic understanding of automation systems. their functionality and their advantages and disadvantages. A technical model is provided describing an automation system iNELS. The practical part describes the procedures and the outcomes of the effectiveness of the system.
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Чміль, Степан Станіславович, and Stepan Chmil. "Забезпечення надійності функціонування розподільчої мережі 110 кВ Теребовлянського РЕМ." Master's thesis, Тернопільський національний технічний університет імені Івана Пулюя, кафедра електричної інженерії,Тернопіль, Україна, 2020. http://elartu.tntu.edu.ua/handle/lib/33510.
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У сучасному світі централізоване електропостачання підприємств та населених пунктів забезпечується від енергетичних систем. Дані енергосистеми складаються з електростанцій, підстанцій, повітряних та кабельних лінії електропередач. “Постає завдання забезпечити оптимальний режим роботи енергосистеми в цілому” [2]. Дане завдання необхідно виконати враховуючи взаємозв’язок між окремими елементами енергосистеми.
Проектування розвитку електричних мереж включає в себе задачу розробки та обґрунтування економічних та технічних питань, що забезпечують необхідну якість та надійність електропостачання. На основі проектів відбувається подальша реконструкція або будівництво підстанцій, електростанцій, повітряних ЛЕП.
Проекти розвитку енергосистем та електричних мереж дають змогу в загальному розглядати весь технологічний процес від виробництва до споживання електроенергії.
Тому, забезпечення надійності функціонування розподільних мереж є актуальною задачею.В даній кваліфікаційній роботі магістра здійснено аналіз мережі Теребовлянського району ВАТ “Тернопільобленерго”. Розраховано навантаження підстанції для максимального та мінімального режимів. Запропоновано сім можливих варіантів розвитку електричної мережі Теребовлянського РЕМ. Проведено вибір марки проводу, потужності та кількості силових трансформаторів. Розглянуто різні варіанти схем електричних з’єднань для високої та низької сторони підстанції. Здійснено вибір комутуючої апаратури, вимірювальної апаратури, трансформаторів власних потреб. Запропоновано принципову схему підстанції .
In this qualification work of the master the analysis of the network of Terebovlya district of JSC "Ternopiloblenergo" is carried out. The substation load for maximum and minimum modes is calculated. Seven possible variants of development of the electric network of Terebovlya REM are offered. The choice of wire brand, power and number of power transformers was made. Different variants of electrical connection schemes for the high and low side of the substation are considered. The choice of switching equipment, measuring equipment, transformers of own needs is made. The schematic diagram of the substation is proposed.
ВСТУП...6 1. АНАЛІТИЧНИЙ РОЗДІЛ…8 1.1 Розподільчі мережі. Резервування…8 1.2 Надійність електропостачання споживачів. Категорійність. Вимоги до постачальних компаній…13 1.3 Висновки до розділу…17 2. РОЗРАХУНКОВО-ДОСЛІДНИЦЬКИЙ РОЗДІЛ…18 2.1 Характеристика електричної мережі 110 кВ Теребовлянського району електромереж ВАТ “Тернопільобленерго”…18 2.2 Обчислення навантаження на підстанції «Раковець»…27 2.3 Запропоновані варіанти розвитку електричної мережі Теребовлянського РЕМ …28 2.4 Вибір проводів повітряних ліній електропередач …36 2.5 Вибір силових трансформаторів ПС «Раковець»…36 2.6 Визначення параметрів елементів. Формування схеми заміщення електричної мережі 110 кВ Теребовлянського РЕМ …40 2.7 Висновки до розділу…45 3. ПРОЕКТНО-КОНСТРУКТОРСЬКИЙ РОЗДІЛ …46 3.1 Варіанти головної схеми електричних з'єднань …46 3.2 Розрахунок струмів короткого замикання …52 3.2.1 Розрахунок ударного струму…53 3.2.2 Розрахунок складових струму…53 3.2.3 Розрахунок теплового імпульсу струму…54 3.3 Вибір вимірювальної апаратури …55 3.3.1 Вибір трансформаторі струму …56 3.3.2 Вибір ТН…58 3.3.2.1. Вибір ТН на стороні 110 кВ…59 3.3.2.2. Вибір ТН на стороні 35 кВ…59 3.3.2.3. Вибір ТН на 10 кВ…60 3.4 Вибір вимикачів, роз’єднувачів …60 3.5 Вибір обмежувачів перенапруг для 110 кВ, 35 кВ та 10 кВ …62 3.6 Вибір ТВП…63 3.7 Вибір запобіжників …64 3.8 Побудова принципової схеми ПС «Раковець»…65 3.9 Висновки до розділу …68 4. ОХОРОНА ПРАЦІ ТА БЕЗПЕКА В НАДЗВИЧАЙНИХ СИТУАЦІЯХ…69 4.1 Причини електротравм та умови ураження людини електричним струмом …69 4.2 Система засобів та заходів з безпечної експлуатації електроустановок …70 4.3 Дія електромагнітного випромінювання на людину …72 ЗАГАЛЬНІ ВИСНОВКИ…74 ПЕРЕЛІК ПОСИЛАНЬ…75 ДОДАТКИ…1 Додаток А. Вибір потужності силових трансформаторів…2 Додаток Б. Порівняльний розрахунок трансформаторів…3
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Mantovani, Michela [Verfasser], and Rolf [Akademischer Betreuer] Schubert. "Modulation of neocortical neurotransmissions by antidepressants and neuromodulatory drugs in human and rodent brain tissue and effect of electrical high-frequency stimulation in human neocortex = Modulation der Neokortikalen Neurotransmissionen durch Antidepressiva und Neuromodulatorische Substanzen im Hirngewebe von Menschen und Nagetieren und Wirkung der elektrischen Hochfrequenzstimulation im menschlichen Neokortex." Freiburg : Universität, 2012. http://d-nb.info/1123472971/34.
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He, Cheng-Chang, and 何承璋. "The Study on Fire Prevention Strategies for Electric Wiring in the House." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/91902394589072025823.
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碩士國立臺北科技大學
土木與防災技術研究所
90
The frequent occurrence of major fire accidents caused tremendous loss of lives and properties in this country. In order to reduce the occurrence and prevent the fire hazards, the government needs to advocate the knowledge of fire prevention and implement effective fire-fighting strategies in addition to changing laws and regulations and promoting public safety plans. This study includes the analysis of contributing factors of electrical fires of aged and deteriorated electrical wiring, the investigation of electricity usage of old residential buildings, and the test of electrical wires. According to this investigation, the fire hazards of old residential buildings are mainly the frayed or faulty electrical cords and outlets, the careless use of extension cords, the improper connection of electrical wires/sockets, and the use of frayed wires. These are the major factors that triggered electrical fires of old residential buildings. In the electrical current test, it was found that the aged and deteriorated electrical wires carried less current safely then the equivalent brand new electrical wires (about 90%). Therefore, this study provides suggestions in terms of regulations and disaster factors to prevent electrical fires and reduce the occurrence of electrical fire accidents.
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"On structural characteristics and improved scheme for graph-based digital circuit rewiring." 2008. http://library.cuhk.edu.hk/record=b5893634.
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Chim, Fu Shing.Thesis (M.Phil.)--Chinese University of Hong Kong, 2008.
Includes bibliographical references (leaves 79-82).
Abstracts in English and Chinese.
Abstract --- p.i
Acknowledgement --- p.iii
Chapter 1 --- Introduction --- p.1
Chapter 2 --- Rewiring Background --- p.4
Chapter 2.1 --- ATPG-Based Rewiring - REWIRE --- p.5
Chapter 2.2 --- Graph-Based Rewiring - GBAW --- p.7
Chapter 3 --- Characteristics of Rewiring Algorithms --- p.10
Chapter 3.1 --- Comparsion between GBAW and REWIRE --- p.10
Chapter 3.2 --- Problem Definition and Motivation --- p.11
Chapter 4 --- Expanding Pattern Library --- p.14
Chapter 4.1 --- Optimizing GBAW's Pattern Library --- p.14
Chapter 4.2 --- Reduced Function Set for Gates within Patterns --- p.15
Chapter 4.3 --- Rewiring with Multiple-Input Gates --- p.15
Chapter 4.4 --- Experiment with GBAW Rewiring --- p.18
Chapter 4.4.1 --- Experimental Results --- p.18
Chapter 4.4.2 --- Discussion --- p.19
Chapter 4.5 --- Experiment with Multi-way GBAW Partitioning --- p.21
Chapter 4.5.1 --- Experimental Results --- p.22
Chapter 4.5.2 --- Discussion --- p.24
Chapter 4.6 --- Summary --- p.24
Chapter 5 --- Circuit Structure for Rewiring --- p.26
Chapter 5.1 --- Common Circuit Structure in GBAW Patterns --- p.26
Chapter 5.2 --- Single Fanout Chains and Reconverging Alternative Wires for REWIRE --- p.28
Chapter 5.3 --- Successive Rewiring --- p.31
Chapter 5.4 --- Summary --- p.33
Chapter 6 --- Chain-Based Rewiring Approach --- p.35
Chapter 6.1 --- Single Fanout Chains in Graph-Based Rewiring --- p.35
Chapter 6.2 --- Chain-Based Rewiring Approach --- p.36
Chapter 6.3 --- Experimental Results --- p.40
Chapter 6.4 --- Discussion --- p.41
Chapter 6.5 --- Summary --- p.43
Chapter 7 --- Hybrid Rewiring Framework --- p.44
Chapter 7.1 --- Limit of Static Approaches --- p.44
Chapter 7.2 --- Analyzing Framework of Dynamic Rewiring --- p.45
Chapter 7.3 --- Techniques for Redundancy Identification --- p.47
Chapter 8 --- Hybrid Chain-Based Rewiring Approach --- p.53
Chapter 8.1 --- Hybrid Rewiring Framework --- p.53
Chapter 8.1.1 --- Chain-Based Preliminary Target Wire Filtering --- p.55
Chapter 8.1.2 --- Implication-Based Candidate Wire Generation --- p.55
Chapter 8.1.3 --- Fast Redundancy Identification --- p.57
Chapter 8.2 --- Uncontrollability and Controlling-Value Paths --- p.58
Chapter 8.3 --- HYBRID - An Implementation of Our Framework --- p.61
Chapter 8.4 --- Experimental Results --- p.63
Chapter 8.5 --- Discussion --- p.65
Chapter 8.6 --- Summary --- p.67
Chapter 9 --- Rewiring Coupled FPGA Technology Mapping --- p.68
Chapter 9.1 --- FPGA Technology Mapping --- p.68
Chapter 9.2 --- Rewiring Coupled FPGA Technology Mapping --- p.70
Chapter 9.2.1 --- Rewiring-based Logic Level Reduction --- p.71
Chapter 9.2.2 --- Incremental Logic Resynthesis (ILR) Area Minimization --- p.71
Chapter 9.3 --- Experimental Results --- p.72
Chapter 9.4 --- Discussion --- p.73
Chapter 9.5 --- Summary --- p.75
Chapter 10 --- Conclusion and Future Works --- p.76
Bibliography --- p.79
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ŠMRHA, Jiří. "Elektronická stavebnice v předmětu Praktické činnosti." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-118182.
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In this thesis I focused on the evaluation of the historical development of electronic kits in the Czech school system, and the survey of the current state of use of electronic kits in the subject Praktické činnosti (Practical Activities) on the second level of primary schools. The thesis also presents a comparison of different types of electronic kits using complex eva-luation criteria. Another part deals with design and implementation of a custom electronic kit intended for teaching the subject Praktické činnosti (Practical Activities), including the implementation of appropriate didactic instruction.
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Cai, Geng Xin, and 蔡庚辛. "Electrical characterization and design of lossy packaging wiring." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/23613554241410413688.
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Winfield, Ian. "Nanocrystalline Metal Enabled Conductors for Enhanced Strength-to-weight Aerospace Electrical Wiring." Thesis, 2010. http://hdl.handle.net/1807/24650.
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High strength-to-weight nanocrystalline alloy enabled conductor (NEC) prototypes were successfully developed by reinforcing an oxygen-free copper core material with electrodeposited cobalt phosphorus (CoP) coatings. A rule of mixtures approach was utilized to design the NEC prototypes to meet materials performance indices. Three unique NEC prototypes were produced with CoP coatings composed of alternating nanocrystalline (11 nm) and coarse-grained layers. The tensile properties were dependant on the coating microstructures, with tensile strengths of 1000 MPa, 970 MPa, and 900 MPa, respectively, and corresponding tensile elongations of 4.6%, 6.1%, and 10%, respectively. The electrical conductivity of the NEC prototypes was ~58 %IACS (resistivity of ~2.96 µΩ-cm). The rule of mixtures approach effectively predicted the tensile strength and conductivity. The NEC samples were significantly stronger than the incumbent high-strength aerospace conductor material, Be-Cu alloy CS95, which exhibits a tensile strength of only 655 MPa and conductivity of 63 %IACS.
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Bhat, Shriram N. "Studies In Micro Interconnections In Printed Wiring Board." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/846.
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Trend towards downsizing the product size and at the same time to bring more functionality in electronic products, demands electrically interconnecting several miniaturized electronic components with high counts of I\Os (Input/Out put) on smaller and smaller size printed wiring boards [PWB]. These miniature components occupy lower foot print area but require higher routing interconnection densities. However, the conventional multilayer board technologies exhibit limitations when there is need to connect very high I\O components such as ball grid arrays, which require blind and buried interconnections within the multilayer mono-block. This limitation has given raise to newer methods of multi layer construction.
Build–up multilayer PWB is now the technology of choice for enhanced routing capability including blind and buried interlayer connections. Build up methods are based on making very small vias within dielectric layers followed by metalisation. Typically blind and buried vias are very small, and hence called “micro vias” connecting the layers selectively within the multilayer mono-block. Buried vias make the interconnection between the consecutive layers, and blind vias connect the surface layers to any one of the interior layers in the build up multilayer board. If the blind vias are filled with a dielectric, the entire top and bottom surface area becomes available for high -density component mounting.
The crux in build up board technologies is the method of creating micro-holes; a micro hole is a hole, which is less than 150 micro meter in diameter. Efforts are made to replace existing metalising techniques with “paste filling” methodologies, which would result in “SOLID CONDUCTING VIAS” CALLED AS “MICRO -INTERCONNECTS” The work reported in this thesis aims at demonstrating one such innovative ‘solid conducting via’ formation without using any of the known micro-hole formation techniques. Based on the results obtained some useful conclusions have been drawn which will perhaps go a long way in the name of “PRINTED PILLAR TECHNOLOGY” a novel methodology for building multilayer suitable for very high I\O components such as “ball grid arrays.”
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Bhat, Shriram N. "Studies In Micro Interconnections In Printed Wiring Board." Thesis, 2008. http://hdl.handle.net/2005/846.
Full textAbstract:
Trend towards downsizing the product size and at the same time to bring more functionality in electronic products, demands electrically interconnecting several miniaturized electronic components with high counts of I\Os (Input/Out put) on smaller and smaller size printed wiring boards [PWB]. These miniature components occupy lower foot print area but require higher routing interconnection densities. However, the conventional multilayer board technologies exhibit limitations when there is need to connect very high I\O components such as ball grid arrays, which require blind and buried interconnections within the multilayer mono-block. This limitation has given raise to newer methods of multi layer construction.
Build–up multilayer PWB is now the technology of choice for enhanced routing capability including blind and buried interlayer connections. Build up methods are based on making very small vias within dielectric layers followed by metalisation. Typically blind and buried vias are very small, and hence called “micro vias” connecting the layers selectively within the multilayer mono-block. Buried vias make the interconnection between the consecutive layers, and blind vias connect the surface layers to any one of the interior layers in the build up multilayer board. If the blind vias are filled with a dielectric, the entire top and bottom surface area becomes available for high -density component mounting.
The crux in build up board technologies is the method of creating micro-holes; a micro hole is a hole, which is less than 150 micro meter in diameter. Efforts are made to replace existing metalising techniques with “paste filling” methodologies, which would result in “SOLID CONDUCTING VIAS” CALLED AS “MICRO -INTERCONNECTS” The work reported in this thesis aims at demonstrating one such innovative ‘solid conducting via’ formation without using any of the known micro-hole formation techniques. Based on the results obtained some useful conclusions have been drawn which will perhaps go a long way in the name of “PRINTED PILLAR TECHNOLOGY” a novel methodology for building multilayer suitable for very high I\O components such as “ball grid arrays.”
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HSIAO, HSIN-YI, and 蕭欣義. "Research on Optimization of Wiring Technology for Automotive Electrical Accessories(Take M brand auto parts as an example)." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ebqcsz.
Full textAbstract:
碩士南開科技大學
車輛與機電產業研究所
105
This study investigates the optimization of the wiring technology of car electrical accessories, including the wiring design method, selection of appropriate wire material types according to their positions on the vehicle, calculation of the load for selection of appropriate wire and fuse capacity, how to properly load proper power supply, circuit and signal sources on the vehicle and appropriate methods for wiring for summarizing the optimal design method and wiring method of the car's electrical fittings to develop the “Confirmation Form for the Wiring Technology Specification for Car Electrical Accessories” to ensure the quality and safety in designing and installing accessories avoid damages of the parts after the use of vehicles and accessories due to improper wiring design and engineering, or major hazards such as burning of cars. According to the results of empirical research, with optimized wiring design and installation method and the confirmation table confirming that the installation result meets the requirements, after the tests and the 30,000-kilometer comprehensive durability test of the vehicle, no adverse situation has occurred. The results confirmed that the accessories installed in accordance with the optimized wiring design and installation method did improve the installation quality and safety and enhanced the competitiveness of the accessories and installers, creating a win-win situation between the customers and the operators.
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CHEN，MEMG-CHUN and 陳能鈞. "A Study on Innovation and Improvements of Electrical Wiring Engineering Methods-A Case From A Company Manufacturing Vacuum Sintering Furnace." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/92tbua.
Full textAbstract:
碩士明新科技大學
管理研究所碩士在職專班
105
Today, the wiring in the machine are much more complicated compared to the past ones. Thus, using the old techniques for wiring is not suitable anymore. At present, the domestic machinery factories place high value on the improvements of main hardware and software programs in the machine, but they don’t pay much attention on improving the electrical control wiring. The goal of this research is to improve the system of wiring. To shorten the time of maintenance, and to decrease the error rate of wiring, the cause-effect chain analysis method in the TRIZ theory was used to find out the main parts needed to be focused for improvements. There were four parts. First, the data for the vacuum sintering furnace is lack of systemization. Second, the manual containing electrician regulations is too thick to read for electricians during working. Third, it is time-consuming for checking whether the internal three-phase contact point) functions properly or not. Last, it needs a lot of time for the external wiring because the connections between external components and the machine are complicated. After I found out the main parts, I used the method of resolving technology contradictions to seek out feasible improvements for the problems. I got four projects for improvements. They were establishing a line number system, sticking related regulations on the commonly-used instruments, using the Molex power connector’s (莫士端子) plug(公座) and receptacle(母座) match connect set on wiring of motor, and creating SOPs for common wirings. We found out that these four projects may reduce the repair time into one-fourth to one-sixth times, and may save NT$ 32100 in cost of maintenance for each Vacuum Sintering Furnace. It may also save 6 working days in connecting external wiring and NT$16800 for each Vacuum Sintering Furnace in cost of wiring. Although the regulations and industrial electrical wiring rules for electricians are written in the manual, but the manual is too thick, so that few electricians learnt these regulations by the manual. Most of them learn these regulations from the experienced electricians. Learning in this way lacks of systematization, and is difficult for new entrants to get used to work quickly. We think that making table lists for the arrangements of wiring based on the past experience will help new staff get used to work in a short time. Since the new entrants get used to work quickly, they will make less errors in the work, and this will improve the work efficiency, and will decrease the cost of the wiring.
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賴韋安. "The effect of Cooperative Learning on Learning Achievement – An Action Research on Industry wiring practice course of Electrical Technology Department at Vocational High School." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/97938844942011035586.
Full textAbstract:
碩士國立彰化師範大學
工業教育與技術學系
101
Abstract This study aimed to explore the effects of Cooperative Learning on Industrial wiring practice course of Electrical Technology Department at Vocational High School. The researcher used qualitative research including questionnaires interviews, field observation video and reviewed the related studies on Cooperative Learning to understand the meaning and status of Cooperative Learning. Action research was conducted to identify problems and solve ongoing problems. The descriptive statistics was used to analyze the Students' pre-test and post-test results to reflect the teaching profession and hence were enhanced students' learning effects. Based on the research objectives, the research results are summarized as follows： 1. The teaching results of Industrial wiring practice course：(1)Students' generally lack learning motivation. (2)Groups of adult students and high-proficiency students are in good learning condition. (3)Students' personality would affect learning. 2. Cooperative Learning affected students' learning achievement on the cognitive aspect：(1)High-proficiency group's learning effects did not were enhanced. (2)The groups of high-intermediate proficiency and low-intermediate proficiency students' learning effects were enhanced. (3)The low-intermediate proficiency students' learning effects were enhanced most obviously. The affective aspect：class atmosphere was pleasant, which gave the students a sense of belonging. The skill aspect：the students' pass rate of industrial wiring c test was 75％, which was higher than the roughly 50％ of students in Electrical Technology Department at Night School. It showed that students' learning effects were enhanced significantly. 3. Based on action research, the researcher's reflection results were shown on three stages. (1)First stage：in the preliminary week, after investigating students' pre-learning knowledge by interview, the effects of Cooperative Learning were positive. (2)Second stage：students had been gradually losing the enthusiasm on teaching experiments, and many problems emerged. The researcher played videos to motivate students. (3)The third stage：the spiral effect of action research can continue and be applied generally to facilitate teacher's professional development.
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賴振龍. "The Study of Intention and Influential Factors in Participating Class B Skill Test of Commercial Wiring Technician for Vocational School Teachers of Electrical Engineering Division in Changhua County." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/47611044391881945934.
Full textAbstract:
碩士國立彰化師範大學
電機工程學系
97
Abstract The technical and vocational education aims to practically train students to engage in career-oriented activities. In addition to basic professional knowledge, professional skills are indispensable for teachers in vocational schools. Therefore, technology licenses are the easiest way to recognize whether teachers have the professional level of skills and expertise. The purpose of this study is to investigate the intention and influencial facors of vocational school teachers of the electrical engineering division in Changhua County, whose tendency to participate and obtain "the class B indoor wiring technology license". The literature analysis and a questionnaire survey method are applied in this study. "Personal factors", "environmental factors" and "organizational factors" are main factors to impact vocational teachers in participating in technical skills class B test. After examining the survey data by statistical analysis, the conclusions can provide the provision of education authorities, schools and the Vocational Training Council of Labor Affairs as reference. The result also offers reference for authorities to reconduct vocational high school teachers technical skills training and certification activities. Keywords：electrical engineering division teachers of the vocational high school, the class B indoor wiring technology license.
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Liang, Ching-Hsien, and 梁慶賢. "The Relationship Between The Motivation of Learning and The Effectiveness of Learning in Skill-based Senior High School Electrical Engineering Students Participating in The Industrial Wiring Level C Skill Test." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/25pw2h.
Full textAbstract:
碩士國立彰化師範大學
工業教育與技術學系
107
The purpose of this study was to investigate the relationship between technical motivation and learning outcomes of technical high school electrical students participating in the industrial wiring C-level skill test. After the literature was investigated, the questionnaires were compiled and randomly sampled. The sampled subjects were national electrical students. A total of 870 questionnaires were distributed, and the questionnaires were collected. 787 valid questionnaires were valid 840, and the effective questionnaire ratio was 89.94%. After the questionnaire was collected, the data were analyzed and compared using analyze Descriptive Statiscs,Independent Sample t-test, One-way Analysis of Variance(ANOVA), Scheff’e Method, post hoc test, Pearson Product-moment correlation and stepwise regression procedure.According to the reseatch outcomes, we have the following conclusions: 1. Skill-based senior high school electrical students participate in the industrial wiring level C skill test with a higher level of learning motivation at the "career progress" level. 2.Skill-based senior high school electrical students participate in the industrial wiring C-level skills test with a "skills" level to face higher learning outcomes. 3.Skill-based senior high school electrical students participate in the industrial wiring level C skills test for learning motivation and learning effectiveness vary with different background variables. 4.Skill-based senior high school electrical students participate in the industrial wiring level C skill check is positively related to learning motivation and learning effectiveness. 5.Skill-based senior high school electrical engineering students participate in the industrial wiring level C skill verification Learning motivation has a significant predictive effect on learning outcomes. Keywords: skill-based senior high school, skill verification, learning motivation, learning effectiveness
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Peters, Frauke. "Vergleich dielektrisch behinderter Entladungen bezüglich der physikalischen Eigenschaften und der Wirkung auf Holz und Holzwerkstoffe." Doctoral thesis, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E553-0.
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