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Дисертації з теми "Compressor selection"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Holmberg, Henrik. "Towards Automatic and Systematic Compressor Model Selection Based on Measurement Data." Thesis, Linköpings universitet, Fordonssystem, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-178104.

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Centrifugal compressors are mechanical devices that move and compress gas and are used in a wide range of applications. To get as much efficiency out of the compressors as possible, high demandsare put on having good compressor models. One method of compressor modeling is the curve fitting method, where empirical and mathematical models are used to parameterize relationships between different compressor characteristics. The models come in a vast variety of formats, complexity and difficulty of applying them. With the variety of compressors and models to select from, it is important to select a

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2

Якимів, Д. С. "Дослідження одноступеневої холодильної машини з різними типами компресорів". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86616.

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У роботі виконано розрахунок параметрів у вузлових точках циклу одноступеневої холодильної машини, в результаті чого визначено необхідну продуктивність компресора. Потім виконано порівняльний аналіз поршневого, гвинтового та спірального компресорів за загальноприйнятою методикою та за допомогою програмного забезпечення компанії Bitzer. За результатами розрахунку і аналізу виконано підбір компресора, який найбільше задовольняє вимогам. У розділі охорони праці виконано аналіз шкідливих та небезпечних факторів при експлуатації холодильного обладнання та виконано розрахунок природного та штучного

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3

Tipton, Russell C. "Simulation of a storage freezer operating with a binary nonazeotropic refrigerant blend part I. equation of state cycle selection compressor model and air-cooled condenser model." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182524272.

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4

Лавриненко, О. С. "Вибір та проектування компресорної машини об’ємного принципу дії для системи холодопостачання". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/76506.

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Розділ 1 "Спеціальний розділ": розрахунок ротаційно-пластинчастого компресора, розрахунок поршневого компресора, розрахунок гвинтового компресора, розрахунок спірального компресора, порівняльний аналіз різних типів компресорів, визначення витрати газу через зазори спірального компресора; розділ 2 «Охорона праці та безпека у надзвичайних ситуаціях»: небезпечні і шкідливі фактори компресорного виробництва, розрахунок захисного заземлення електроприводу, розрахунок хімічної обстановки на об'єкті у зв’язку з аварією на прилеглій залізничній станції, що призвела до руйнування ємності з аміаком; роз

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5

Олійник, Я. О. "Проєктування стаціонарної азотно-мембранної компресорної станції". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86611.

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У роботі виконано розрахунок стаціонарної азотної мембранної станції, а саме підбір та розрахунок гвинтових компресорів, сепаратора та фільтра. Потім виконано розрахунок потреби в стисненому азоті по трьом гілкам, які відрізняються чистотою кінцевого продукту. В результаті аналізу використання різної кількості компресорів для потреб стиснення азоту, виконано вибір найбільш оптимального варіанту. У розділі охорони праці виконано аналіз шкідливих та небезпечних факторів при експлуатації гвинтових компресорів.<br>В работе выполнен расчет стационарной азотной мембранной станции, а именно подбор и

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6

Venter, Johan. "Development of a dynamic centrifugal compressor selector for large compressed air networks in the mining industry / Johan Venter." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9540.

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Various commercial software packages are available for simulating compressed air network operations. However, none of these software packages are able to dynamically prioritise compressor selection on large compressed air networks in the mining industry. In this dissertation, a dynamic compressor selector (DCS) will be developed that will actively and continuously monitor system demand. The software will ensure that the most suitable compressors, based on efficiency and position in the compressed air network, are always in operation. The study will be conducted at a platinum mine. Compressed a

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7

Chau, Wing San. "Key frame selection for video transcoding /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202005%20CHAU.

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8

Ryen, Tom. "Rate-distortion optimal vector selection in frame based compression." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-575.

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<p>In signal compression we distinguish between lossless and lossy compression. In lossless compression, the encoded signal is more bit efficient than the original signal and is exactly the same as the original one when decoded. In lossy compression, the encoded signal represents an approximation of the original signal, but it has less number of bits. In the latter situation, the major issue is to find the best possible rate-distortion (RD) tradeoff. The rate-distortion function (RDF) represents the theoretical lower bound of the distortion between the original and the reconstructed signal, su

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9

Cai, Xun Ph D. Massachusetts Institute of Technology. "Algorithms for transform selection in multiple-transform video compression." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74903.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 73).<br>Selecting proper transforms for video compression has been based on the rate-distortion criterion. Transforms that appear reasonable are incorporated into a video coding system and their performance is evaluated. This approach is tedious when a large number of transforms are used. A quick approach to evaluate these transforms is based on the energy compaction property. With a proper transfor

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10

Chen, Jihong. "Sparse Modeling in Classification, Compression and Detection." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5051.

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The principal focus of this thesis is the exploration of sparse structures in a variety of statistical modelling problems. While more comprehensive models can be useful to solve a larger number of problems, its calculation may be ill-posed in most practical instances because of the sparsity of informative features in the data. If this sparse structure can be exploited, the models can often be solved very efficiently. The thesis is composed of four projects. Firstly, feature sparsity is incorporated to improve the performance of support vector machines when there are a lot of noise features pr

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11

Agrahari, Manoj Kumar. "Better Selection of K-mers for Compression of DNA Sequences using Huffman Encoding." OpenSIUC, 2021. https://opensiuc.lib.siu.edu/theses/2859.

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The genome of an organism contains all hereditary information encoded in DNA.Genome databases are rapidly increasing. This increase in the amount of DNA data demands an increasing need to compress the DNA data in less space for faster transmission and research activities. General text compression algorithms don’t utilize the specific characteristics of a DNA sequence. There are various tools developed using different algorithms and approaches. Many of these tools include the implementation of Huffman encoding to incorporate the characteristics of DNA sequences. Huffman-based techniques center

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12

Ajoku, Uzoma. "Investigating the compression properties of selective laser sintered Nylon-12." Thesis, Loughborough University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504052.

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The Selective Laser Sintering process is a widely established Rapid Manufacturing technology that offers various possibilities not available from other production techniques. The application of Selective Laser Sintering in the creation of products such as shoe outsoles has led to a requirement for compression property data and an understanding of the factors that influence it. This research investigated the effect of sintering temperature on compression modulus and strength of Selective Laser Sintered nylon-12 parts. Three parameters were used to vary temperature. These were laser power, part

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13

Chang, Andy. "Fast multi-frame and multi-block selection for H.264 video coding standard /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202003%20CHANG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 57-58). Also available in electronic version. Access restricted to campus users.

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14

Miller, David J. "The selection and testing of compression seal and chamber coating materials for the pivotal engine™." Thesis, University of Canterbury. Mechanical Engineering, 2006. http://hdl.handle.net/10092/1569.

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Wear and friction tests were conducted on a rotational tribometer to identify material couples for compression seals and chamber coatings to extend the service life of the Pivotal Engine™. Potential materials were identified based on reports in the literature of successful use in similar environments. From the rotational tribometer tests, the best material couple was found to be reaction bonded silicon nitride against a Sulzer Metco F4301 plasma sprayed coating followed by a Total Seal TiN coated seal against the F4301 coating. However, the performance predicted by the rotational tribometer wa

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15

NGUYEN-PHUC, ERIC. "Compression selective et focalisation visuelle : application au codage hybride de sequences d'images." Rennes 1, 1995. http://www.theses.fr/1995REN10167.

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Le domaine d'etude de cette these est le traitement numerique des signaux pour la compression d'images ou de sequences d'images a bas debits. L'innovation de ce travail repose sur l'introduction de la notion de focalisation d'attention dans ce domaine. Contrairement a l'approche conventionnelle de compression du signal de television numerique ou aucun a priori n'est donne sur le contenu de la scene a coder et ou l'image est evaluee de maniere globale, ici le traitement est opere en fonction de zones d'interet. Comme nous le montrons, il n'existe pas de critere de selection de l'information per

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16

Wolfram, Kyle Martin. "Characterization of air to fuel ratio control and non-selective catalytic reduction on an integral compressor engine." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/742.

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17

Prabhakar, Sandesh. "Algorithms and Low Cost Architectures for Trace Buffer-Based Silicon Debug." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/35931.

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An effective silicon debug technique uses a trace buffer to monitor and capture a portion of the circuit response during its functional, post-silicon operation. Due to the limited space of the available trace buffer, selection of the critical trace signals plays an important role in both minimizing the number of signals traced and maximizing the observability/restorability of other untraced signals during post-silicon validation. In this thesis, a new method is proposed for trace buffer signal selection for the purpose of post-silicon debug. The selection is performed by favoring those signals

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18

Hall, Geoffrey. "Selective lossless retention of critical thermal data within highly compressed thermal video sequences." Thesis, University of Central Lancashire, 2002. http://clok.uclan.ac.uk/20071/.

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The research described in this thesis involves the development of a video coding scheme which provides lossless Region Of Interest (ROl) coding specifically targeted toward the compression of thermal video sequences. In particular the scheme is designed to provide lossless coding of critical temperature data contained in thermal video sequences used within firefighting applications. High coding efficiency is achieved by the use of Discrete Cosine Transform (DCT) based lossy coding for non-critical areas of the video sequence. The research is divided into three key sections; an investigation in

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19

Gomes, Diego de Miranda. "Compress?o Seletiva de Imagens Coloridas com Detec??o Autom?tica de Regi?es de Interesse." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15520.

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Made available in DSpace on 2014-12-17T14:56:22Z (GMT). No. of bitstreams: 1 DiegoMG.pdf: 1982662 bytes, checksum: e489eb42e914d358aaeb197489ceb5e4 (MD5) Previous issue date: 2006-01-05<br>There has been an increasing tendency on the use of selective image compression, since several applications make use of digital images and the loss of information in certain regions is not allowed in some cases. However, there are applications in which these images are captured and stored automatically making it impossible to the user to select the regions of interest to be compressed in a lossless manner.

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20

Ko, Seunghyun. "Selecting Best Compromises among Performance Measures during In-Mold Coating of Sheet Molding Compound Compression Molding Parts." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1430756657.

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21

Ruan, Peiying. "Computational Methods for Analyzing Protein Complexes and Protein-Protein Interactions." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199433.

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22

Puri, Saurabh. "Learning, selection and coding of new block transforms in and for the optimization loop of video coders." Thesis, Nantes, 2017. http://www.theses.fr/2017NANT4075/document.

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Анотація:

Les transformées sont un élément clé dans les systèmes de codage vidéo par blocs. Cette thèse approfondit les schémas d’apprentissage à multiples transformées. Une première contribution de ce travail est consacrée à l’évaluation de schémas d’apprentissage de transformées de deux types en ligne et hors ligne. Les deux approches sont comparées en détail et leur pertinence respective révélées. Nous proposons ensuite plusieurs techniques afin d’améliorer la stabilité du système d’apprentissage et réduire le coût de la signalisation. Une seconde contribution concerne les schémas d’apprentissage mul

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23

Su, Yong. "Mathematical modeling with applications in high-performance coding." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127139848.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xiv, 130 p.; also includes graphics (some col.). Includes bibliographical references (p. 125-130). Available online via OhioLINK's ETD Center

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24

Schneider, Rhiannon N. "Genome-Wide Analyses for Partial Resistance to Phytophthora sojae Kaufmann and Gerdemann in Soybean (Glycine max L. Merr.) Populations from North America and the Republic of Korea." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429741967.

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25

Saarimäki, Jonas. "The mechanical properties of lattice truss tructures with loadbearing shells made of selectively laser melted Hastelloy X (TM)." Thesis, KTH, Industriell produktion, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-41320.

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This thesis discusses how to test the mechanical properties of openlattice truss structures and hybrids being a tube containing a latticetruss structure. By properties we mean strength, stiffness, thermalconductivity and so forth.Mechanical testing was done on two different structures to betterunderstand how the load-bearing properties change when these structuresare subjected to tensile, compressive and bending forces. The structuresinvestigated were Diamond and Octagon built at 45° and 90°. Acousticemission was also used to evaluate and analyze the different behaviour ofthe structures. The t

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26

Alay, Ozgu. "Fast Intra/inter Mode Decision For A Real-time H.264 Streaming System." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607355/index.pdf.

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Video compression is a key technology used in several multimedia applications. Improvements in the compression techniques together with the increasing speed and optimized architecture of the new family processors enable us to use this technology more in real time systems. H.264 (also known as MPEG-4 Part 10 or AVC - Advanced Video Coding), is the latest video coding standard which is noted for achieving very high data compression. While H.264 is superior to its predecessors, it has a very high computational complexity which makes its costly for real time applications. Thus, in order to perform

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27

Asif, Muhammad Salman. "Primal dual pursuit a homotopy based algorithm for the Dantzig selector /." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24693.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Romberg, Justin; Committee Member: McClellan, James; Committee Member: Mersereau, Russell

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28

Boulegane, Dihia. "Machine learning algorithms for dynamic Internet of Things." Electronic Thesis or Diss., Institut polytechnique de Paris, 2021. http://www.theses.fr/2021IPPAT048.

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Анотація:

La croissance rapide de l’Internet des Objets (IdO) ainsi que la prolifération des capteurs ont donné lieu à diverses sources de données qui génèrent continuellement de grandes quantités de données et à une grande vitesse sous la forme de flux. Ces flux sont essentiels dans le processus de prise de décision dans différents secteurs d’activité et ce grâce aux techniques d’intelligence artificielle et d’apprentissage automatique afin d’extraire des connaissances précieuses et les transformer en actions pertinentes. Par ailleurs, les données sont souvent associées à un indicateur temporel, appelé

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29

Ben, Ammar Yamen. "Traitements thermomécaniques des colonies de lamelles parallèles du Zircaloy-4 trempé-β". Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2012. http://tel.archives-ouvertes.fr/tel-00849217.

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Le Zircaloy-4 utilisé comme matériau de gainage des combustibles nucléaires est trempé β puis filé sur aiguille dans le haut domaine α. La microstructure de trempe, qui conditionne les opérations de mise en forme ultérieures, se présente sous deux formes : vannerie ou colonies de lamelles parallèles. Ces dernières se fragmentent difficilement lorsqu'elles sont normales à l'effort de compression. La thèse étudie trois aspects de ce phénomène. Le premier concerne les conditions de trempe : temps d'homogénéisation dans le domaine β et vitesse de refroidissement. Une adaptation au Zircaloy-4 de l'

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30

Dubois, Loïc. "Protection de vidéo comprimée par chiffrement sélectif réduit." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20169/document.

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Анотація:

De nos jours, les vidéos et les images sont devenues un moyen de communication très important. L'acquisition, la transmission, l'archivage et la visualisation de ces données visuelles, que ce soit à titre professionnel ou privé, augmentent de manière exponentielle. En conséquence, la confidentialité de ces contenus est devenue un problème majeur. Pour répondre à ce problème, le chiffrement sélectif est une solution qui assure la confidentialité visuelle des données en ne chiffrant qu'une partie des données. Le chiffrement sélectif permet de conserver le débit initial et de rester conforme aux

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31

Durif, Ghislain. "Multivariate analysis of high-throughput sequencing data." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1334/document.

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L'analyse statistique de données de séquençage à haut débit (NGS) pose des questions computationnelles concernant la modélisation et l'inférence, en particulier à cause de la grande dimension des données. Le travail de recherche dans ce manuscrit porte sur des méthodes de réductions de dimension hybrides, basées sur des approches de compression (représentation dans un espace de faible dimension) et de sélection de variables. Des développements sont menés concernant la régression "Partial Least Squares" parcimonieuse (supervisée) et les méthodes de factorisation parcimonieuse de matrices (non s

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32

Valachová, Michaela. "Progressive Meshes." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236577.

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This thesis introduces a representation of graphical data, progressive meshes, and its fields of usage. The main part of this work is mathematical representation of progressive meshes and the simplification algorithm, which leads to this representation. Examples of changes in progressive mesh representation are also part of this thesis, along with few examples. The result is an application that implements the calculation of the Progressive Meshes model representation

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33

MORBEE, MARLEEN. "Optimized information processing in resource-constrained vision systems. From low-complexity coding to smart sensor networks." Doctoral thesis, Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/12126.

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Vision systems have become ubiquitous. They are used for traffic monitoring, elderly care, video conferencing, virtual reality, surveillance, smart rooms, home automation, sport games analysis, industrial safety, medical care etc. In most vision systems, the data coming from the visual sensor(s) is processed before transmission in order to save communication bandwidth or achieve higher frame rates. The type of data processing needs to be chosen carefully depending on the targeted application, and taking into account the available memory, computational power, energy resources and bandwidth cons

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34

Wu, Hui-Chun, and 吳慧君. "Best Selection of Refrigerant Compressor with HFC-245fa." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/ub4vrn.

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碩士<br>國立臺北科技大學<br>能源與冷凍空調工程系碩士班<br>101<br>The study intends to select from the market a compressor that meets the operation specifications of HFC-245fa refrigerant, and use the compressor to achieve effectiveness of HFC-245fa. After experiments are conducted, the study employs theoretical analysis and actual compression system to compare the difference among refrigerating and heating capacities, COPL and COPH under different evaporation temperatures and condensing temperatures. Research results show that HFC-134a refrigerant is most similar to HFC-245fa refrigerant. The study conducts actua

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Menon, Sreejith K. "COMPASS - A Guide For Selection Of Compression Strategies For Embedded Processors." Thesis, 2005. https://etd.iisc.ac.in/handle/2005/1440.

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Menon, Sreejith K. "COMPASS - A Guide For Selection Of Compression Strategies For Embedded Processors." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1440.

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Van, Tonder Adriaan Jacobus Marthinus. "Automation of compressor networks through a dynamic control system / Adriaan Jacobus Marthinus van Tonder." Thesis, 2014. http://hdl.handle.net/10394/15723.

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Compressed air makes up an important part of South African precious metal mining processes. Rising operational costs in the struggling mining sector increased the interest of the power utility, Eskom, and mine management in achievable electrical energy savings. Demand side management initiatives, funded by Eskom, realised a significant improvement in electrical energy efficiency of compressed air networks. Supply side interventions further aided optimisation by lowering operational costs. Previous research identified the need for integrating compressed air supply and demand side initiatives. A

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Chen, Kung-Han, and 陳功瀚. "An Efficient Test Data Compression Scheme Using Selection Expansion." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/61101774897607876166.

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碩士<br>淡江大學<br>電機工程學系碩士班<br>100<br>Because MISR (Multiple input shift register) can use one ATE data run a lot of times in it. We use this characteristic to let one data run lots of times in MISR to generate a lot of patterns. MISR is the foundation of our decompressor .And using Gauss-Elimination to get the ATE data. Selection with Flip-Flop can spread MISR data, because one Flip-Flop of MISR connected with two MUXs of Selection. The Selection connected with the MISR. Flip-Flops are connected with the Selection. The original ATE is spreading by our decompressor architecture. And using the Fli

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Van, Niekerk Mattheus Hendrikus Pieters. "The implementation of a dynamic air compressor selector system in mines / Mattheus Hendrikus Pieters van Niekerk." Thesis, 2015. http://hdl.handle.net/10394/15714.

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The generation of compressed air comprises 20% of the total electricity usage in the mining industry, although compressed air is often seen as a free source of energy. There are however significant costs associated with generating compressed air and maintaining a compressed air system. There are several methods to optimise the electricity used to generate compressed air. The focus of this study is on one of these methods – the implementation of a dynamic air compressor selector. A Dynamic Compressor Selector (DCS) system was developed to fulfil this purpose. DCS is a system that combines deman

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Lin, Chian Hsiung, and 林俊雄. "Image Compression Using Wavelet Packets with Top-down Basis Selection Algorithm." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/77834492517292590580.

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Huang, Chin Chia, and 黃俊嘉. "Efficient Code Compression for Embedded Systems by Multi-level Dictionaries and Selective Compression." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/82150375332190857635.

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碩士<br>國立中正大學<br>資訊工程研究所<br>88<br>Since text compressions are well-known techniques, we propose the construction of code compression schemes for embedded systems based on these techniques. And the issues we concerned are the program size and the energy consumption. In the aspect of program size, we bring up two methods. One is a dictionary based compression scheme, which is called multi-level dictionaries. And the second one named as assembling common code sequences, which can be either dictionary based compression or not. The key idea of the multi-level dictionary approach is to sep

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Hu, Chun-Hao, and 胡峻豪. "A PERCEPTUALLY OPTIMIZED H.264/AVC CODER BASED ON SELECTION OF COMPRESSION MODE." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/22692240526649401714.

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碩士<br>大同大學<br>通訊工程研究所<br>93<br>Video coding based on human visual system (HVS) has become an important subject in the area of video communication. However, the HVS is rarely used in standard codec. This paper focus on how to enhance the perceptual quality of H.264/AVC codec by means of improving the mode selection algorithm based on Human visual model. In the proposed mode selection algorithm, the perceptual minimum rate-distortion cost criterion would choose the best mode from various inter/intra prediction modes to optimize video quality on macro-block basis. In comparison with H.264 sta

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Li, Li. "Model Selection via Minimum Description Length." Thesis, 2011. http://hdl.handle.net/1807/31834.

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The minimum description length (MDL) principle originated from data compression literature and has been considered for deriving statistical model selection procedures. Most existing methods utilizing the MDL principle focus on models consisting of independent data, particularly in the context of linear regression. The data considered in this thesis are in the form of repeated measurements, and the exploration of MDL principle begins with classical linear mixed-effects models. We distinct two kinds of research focuses: one concerns the population parameters and the other concerns the cluster/su

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Qiu, Zhi-Han, and 邱致瀚. "Study on Dual-mode Entropy Coding Selection for Low Bit Rate Lightweight Video Compression." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/18243409858846687549.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>98<br>The objective of this thesis is to develop a dual-mode entropy coding selection algorithm for the low bit-rate lightweight video compression system. In applications of low bit-rate lightweight video compression system, entropy coding stage costs the most time and the time of CABAC is 1.5 times the time of CAVLC on the average. As a result, we develop a dual-mode entropy coding selection algorithm to choose the better mode for each frame encoded. Dual-mode entropy coding selection algorithm can be used to compute the PSNR difference of one frame which encoded

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Wu, Chia-Yuam, and 巫家源. "A Feature Selection of Hiding the Encryption Information and Resistant Lossy Compression in Social Website." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/77281567142647494587.

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碩士<br>清雲科技大學<br>電腦通訊與系統工程研究所<br>100<br>In this thesis, we propose a feature selection mechanism to hide the encryption information into social sites. The cover image is first discrete cosine transformed (DCT), and then eigenvaules are calculated and taken as the block feature in each block. We selected eight direction DCT blocks as candidate blocks to embed the encryption information. Then, a selective data hiding method is adressed in which the candidate block is chosen for data embedding only when the result of variance from the cover image and stege image is smaller than a threshold. Simula

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Nandhini, Devi N. "A Feasibility Map-Based Framework and Its Implementation for Selection in Engineering Design." Thesis, 2015. http://etd.iisc.ac.in/handle/2005/3770.

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A pragmatic method for selecting components and devices from a database or parameterized models is developed in this thesis. The quantitative framework presented here is sufficiently general to accommodate an entire device assembly, a component, or a sub-assembly. The details pertaining to a device or a component are classified into three sets of variables: (i) user-specifications, s (ii) device parameters, p , and (iii) device characteristics, c . Functional, practical, and performance-related attributes that a user can provide comprise user-specifications. Since, most often, a specification

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Nandhini, Devi N. "A Feasibility Map-Based Framework and Its Implementation for Selection in Engineering Design." Thesis, 2015. http://etd.iisc.ernet.in/2005/3770.

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A pragmatic method for selecting components and devices from a database or parameterized models is developed in this thesis. The quantitative framework presented here is sufficiently general to accommodate an entire device assembly, a component, or a sub-assembly. The details pertaining to a device or a component are classified into three sets of variables: (i) user-specifications, s (ii) device parameters, p , and (iii) device characteristics, c . Functional, practical, and performance-related attributes that a user can provide comprise user-specifications. Since, most often, a specification

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Kumcu, A., L. Platisa, H. Chen, et al. "Selecting stimuli parameters for video quality studies based on perceptual similarity distances." 2015. http://hdl.handle.net/10454/16977.

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Yes<br>This work presents a methodology to optimize the selection of multiple parameter levels of an image acquisition, degradation, or post-processing process applied to stimuli intended to be used in a subjective image or video quality assessment (QA) study. It is known that processing parameters (e.g. compression bit-rate) or techni- cal quality measures (e.g. peak signal-to-noise ratio, PSNR) are often non-linearly related to human quality judgment, and the model of either relationship may not be known in advance. Using these approaches to select parameter levels may lead to an inaccu

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(5930585), Vineeth Chigarangappa Rangadhamap. "Fast Computation of Wide Neural Networks." Thesis, 2019.

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<div>The recent advances in articial neural networks have demonstrated competitive performance of deep neural networks (and it is comparable with humans) on tasks like image classication, natural language processing and time series classication. These large scale networks pose an enormous computational challenge, especially in resource constrained devices. The current work proposes a targeted-rank based framework for accelerated computation of wide neural networks. It investigates the problem of rank-selection for tensor ring nets to achieve optimal network compression. When applied to a state

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Teixeira, Francisco Tomé Ferreira. "Mechanical behavior of PA12 lattice structures produced by SLS." Master's thesis, 2021. http://hdl.handle.net/1822/74851.

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Dissertação de mestrado integrado em Engenharia de Polímeros<br>Taking into account the rapid technological evolution and the growing demand, for the industrial sector to meet the most diverse needs of the market, Additive Manufacturing (AM) technology appears as a transformative approach to industrial production that enables the creation of lighter, stronger parts and systems. The versatility of this type of technology allows a reduction in production time and energy consumption, as well as, reducing material waste in the production of a product. It is in this last point that the technologies

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