Log in

Relevant bibliographies by topics / Compressor machine / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Compressor machine.

Dissertations / Theses on the topic 'Compressor machine'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Compressor machine.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Ibsaine, Rabah. "Étude d’un système tritherme intégrant une compression thermique originale, destiné au marché du chauffage résidentiel." Thesis, Pau, 2015. http://www.theses.fr/2015PAUU3030/document.

Full text

Abstract:

L’innovation technologique dans les filières énergétiques est une manière pertinente de réaliser des économies d’énergie et de répondre aux préoccupations environnementales. Le chauffage représente la principale consommation d’énergie dans le secteur de l’habitat en France et contribue fortement aux rejets de gaz à effet de serre. Un nouveau conceptde compresseur thermique a été développé par la société boostHEAT. Il est destiné à remplacer le compresseur mécanique conventionnel d’un système de pompe à chaleur au CO2 pour former un système “tritherme”. Ce compresseur thermique est constitué d’

APA, Harvard, Vancouver, ISO, and other styles

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.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

3

Lapáček, Martin. "Reverzační turbokompresor." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231809.

Full text

Abstract:

This diploma thesis is dedicated to a design of a reversing turbo-compressor. The thesis is divided into several parts. The introductory part includes the relevant theory and categorization of turbomachines. The second part describes the storage system the machine is designed for. A separate chapter is devoted to other examples of possible use of this machine. The next chapter provides a detail description of modes and individual parts of the machine. The most comprehensive chapter is then devoted to the design of the compressor, turbine calculation and design of integrated gearbox. The thesis

APA, Harvard, Vancouver, ISO, and other styles

4

Bardou, Olivier. "Sur des methodes de surveillance et de diagnostic vibratoire de machines alternativesS." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0015.

Full text

Abstract:

Le but de ce travail est d'appliquer des methodes de traitement du signal et de reconnaissance des formes pour la surveillance des machines alternatives par les vibrations. Une synthese des methodes existantes pour la surveillance vibratoire de machines simples, comme les machines tournantes, est tout d'abord developpee. Cela nous permet de degager les limites des outils classiques d'analyse. La complexite des machines alternatives justifie alors l'utilisation d'outils de traitement du signal plus adaptes a l'extraction de parametres pertinents vis a vis du caractere non-stationnaire du signal

APA, Harvard, Vancouver, ISO, and other styles

5

Кушніров, Павло Васильович, Павел Васильевич Кушниров, Pavlo Vasylovych Kushnirov та Е. А. Сергиенко. "Повышение эффективности обработки деталей компрессоров". Thesis, Издательство СумГУ, 2008. http://essuir.sumdu.edu.ua/handle/123456789/5887.

Full text

Abstract:

Усовершенствование технологии обработки деталей компрессоров является актуальной задачей, поскольку компрессоры – это важнейшее энергетическое оборудование машиностроительной промышленности. Цель исследований - повышение эффективности обработки детали «Цилиндр III ступени 43.42.22.019.01.00.008», входящей в состав компрессора типа ЗВШ 1,6-3/46 М3. При цитировании документа, используйте ссылку http://essuir.sumdu.edu.ua/handle/123456789/5887

APA, Harvard, Vancouver, ISO, and other styles

6

Бондаренко, Герман Андрійович, Герман Андреевич Бондаренко, Herman Andriiovych Bondarenko та І. В. Лисенко. "Оптимізація режимів роботи повітряної КС з використанням математичної моделі". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/62554.

Full text

Abstract:

Мета роботи: розробка математичної моделі управління роботою повітряної компресорної станції промислового підприємства на змінних режимах. Задача: розробити алгоритм, програму і математичні моделі КС, призначеної для управління КС шляхом включення або ж вимкнення компресорних машин, згідно з прийнятими критеріями раціональності. Вирішити задачу для аналізу компресорної станції з будь-якими типорозмірами компресорних машин з відомим графіком навантаження станції.

APA, Harvard, Vancouver, ISO, and other styles

7

Бурий, Андрій Сергійович, Андрей Сергеевич Бурый, Andrii Serhiiovych Buryi, Віталій Іович Симоновський, Виталий Иович Симоновский та Vitalii Iovych Symonovskyi. "Повышение вибронадежности поршневых компрессорных установок". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40551.

Full text

Abstract:

Проблема обеспечения вибронадежности поршневых машин вследствие полигармонического характера крутящих моментов и неуравновешенности элементов валопровода представляет собой весьма трудноразрешимую задачу. Одним из основных факторов, влияющих на вибронадежность поршневых машин, являются крутильные колебания, особенно на резонансных режимах. Они, как известно, относятся к опасным динамическим нагрузкам, которые нередко приводят к аварийным повреждениям коленчатых валов, редукторов, муфт, демпферов и других элементов валопроводов поршневых машин, в частности компрессоров.

APA, Harvard, Vancouver, ISO, and other styles

8

Козін, Віктор Миколайович, Виктор Николаевич Козин, Viktor Mykolaiovych Kozin та М. В. Заставенко. "Аналіз ефективності роботи конденсатора повітряного охолодження парокомпресійної холодильної машини". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/62418.

Full text

Abstract:

З часом резерви розвіданих первинних ресурсів вичерпуються, кількість нафти і природного газу, з розумною ціною видобування, з кожним роком стає менше, а попит на них зростає. Крім того, останнім часом спостерігається загальна тенденція стрімкого подорожчання первинних енергоресурсів, що у свою чергу призводить до зростання цін на кінцевий продукт. Очевидно, що економія первинних енергоресурсів є невід’ємною складовою будь-якого підприємства, зокрема пов’язаного із використанням холодильної техніки.

APA, Harvard, Vancouver, ISO, and other styles

9

Vrána, Jan. "Třírotorový lopatkový stroj pro klimatizační systém." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230158.

Full text

Abstract:

For air cooling in aircrafts is used an air cycle machine. Recently, there is focusing on incresing efficiency of air cycle and due this are added another rotors. Design of machine with three rotors is performed in this thesis.

APA, Harvard, Vancouver, ISO, and other styles

10

SANCHEZ, FERNANDO ZEGARRA. "COMPRESSION IGNITION OF ETHANOL-POWERED IN RAPID COMPRESSION MACHINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=29324@1.

Full text

Abstract:

PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Com o passar do tempo, a humanidade tem uma maior dependência na geração de energia, utilizada para promoção de conforto, transporte e outros. Com a finalidade de resolver este aumento de demanda, novas fontes eficientes, de preferência renováveis, estão sendo pesquisadas. O transporte é uma das atividades que tem maior dependência dos combustíveis fósseis, além de ser também um dos maiores geradores de gases de efeito estufa. É por isso, que

APA, Harvard, Vancouver, ISO, and other styles

11

Довгопол, М. В. "Дослідження і розрахунок аміачного поршневого компресора, що працює у складі одноступеневої холодильної машини". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/82900.

Full text

Abstract:

У роботі виконано розрахунок холодильного циклу та компресора, а також визначено вплив температур гарячого і холодного джерела оберненого циклу одноступеневої парокомпресійної холодильної машини на коефіцієнт перетворення циклу, а також на витратні і енергетичні характеристики компресора, що працює у його складі. У розділі охорони праці розглянуто шкідливі та небезпечні фактори, які виникають при експлуатації поршневих компресорів у холодильному виробництві<br>В работе выполнен расчет холодильного цикла и компрессора, а также определено влияние температур горячего и холодного источника обратно

APA, Harvard, Vancouver, ISO, and other styles

12

Hahn, Tairin. "Ignition study in rapid compression machine." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/46641.

Full text

Abstract:

Thesis (Mech. E.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.<br>Includes bibliographical references (leaves 79-81).<br>As it becomes more and more difficult to find "easy" oil, various alternative fuels are introduced to the markets. These fuels have chemical properties that are different from the traditional gasoline and diesel fuels so that engine efficiency and other engine behaviors may be affected To improve engine efficiency and to identify which alternative fuel is the cleanest fuel solution, it is necessary to compile information about the ignition d

APA, Harvard, Vancouver, ISO, and other styles

13

Khanchoul, Mohamed. "Contribution au développement de la partie électromécanique d’un compresseur pour climatisation de véhicule électrique." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112384/document.

Full text

Abstract:

Cette thèse s'inscrit dans le cadre du projet Compacité qui vise à développer un compresseur électrique pour véhicules électriques à l’aide d’une démarche mécatronique. Dans cette thématique, le rôle du LGEP est de développer la partie électromécanique du compresseur. Cette thèse est constituée de deux parties, la première concerne la conception d’un moteur pour le compresseur et la deuxième a trait à la commande sans capteur mécanique de ce moteur. La première partie de la thèse est d'abord consacrée au dimensionnement d'une machine électrique pour un compresseur électrique. Le cahier des cha

APA, Harvard, Vancouver, ISO, and other styles

14

LOAIZA, JUAN CARLOS VALDEZ. "REACTIVITY CONTROLLED COMPRESSION IGNITION OF DIESEL FUEL AND ETHANOL IN RAPID COMPRESSION MACHINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35559@1.

Full text

Abstract:

PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Serão necessários muitos anos para que os biocombustíveis sejam capazes de substituir integralmente os derivados fósseis. Este trabalho visa estudar formas alternativas de conversão de energia contida nos combustíveis utilizados em motores de combustão interna. Maiores eficiências na conversão da energia contida no combustível e uma menor emissão dos gases de exaustão são benefícios associados à ignição por compressão de reatividade controlada, RCCI, onde dois fluidos com dife

APA, Harvard, Vancouver, ISO, and other styles

15

Bruccoleri, Damon F. "Database Streaming Compression on Memory-Limited Machines." Diss., NSUWorks, 2018. https://nsuworks.nova.edu/gscis_etd/1031.

Full text

Abstract:

Dynamic Huffman compression algorithms operate on data-streams with a bounded symbol list. With these algorithms, the complete list of symbols must be contained in main memory or secondary storage. A horizontal format transaction database that is streaming can have a very large item list. Many nodes tax both the processing hardware primary memory size, and the processing time to dynamically maintain the tree. This research investigated Huffman compression of a transaction-streaming database with a very large symbol list, where each item in the transaction database schema’s item list is a symbo

APA, Harvard, Vancouver, ISO, and other styles

16

Mittal, Gaurav. "A rapid compression machine design, characterization, and autoignition investigations /." online version, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=case1130184196.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Arshad, Norhashim Mohd. "Real-time data compression for machine vision measurement systems." Thesis, Liverpool John Moores University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285284.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Lee, Daeyup. "Autoignition measurements and modeling in a rapid compression machine." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10278.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Stander, Melchior. "Development of an intermediate strain rate compression testing machine." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9131.

Full text

Abstract:

Includes bibliographical references.<br>The further development of the wedge bar Intermediate Strain rate Tester (IST) presented by Cloete and Oxtoby [1] is presented in this dissertation. The concept uses a wedge mechanism to deform 5 mm diameter, 5 mm long specimens at strain rates in the region of 10 s, up to strains of 30. As impact principles are used to start and stop the experiment, it takes less than 1 of the testing duration to reach testing speed and to stop the experiment. The kinetic energy stored in the wedge bar helps ensure a near constant loading rate over the duration of the e

APA, Harvard, Vancouver, ISO, and other styles

20

Bruccoleri, Damon. "Database Streaming Compression on Memory-Limited Machines." Thesis, Nova Southeastern University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10751913.

Full text

Abstract:

<p> Dynamic Huffman compression algorithms operate on data-streams with a bounded symbol list. With these algorithms, the complete list of symbols must be contained in main memory or secondary storage. A horizontal format transaction database that is streaming can have a very large item list. Many nodes tax both the processing hardware primary memory size, and the processing time to dynamically maintain the tree. </p><p> This research investigated Huffman compression of a transaction-streaming database with a very large symbol list, where each item in the transaction database schema’s

APA, Harvard, Vancouver, ISO, and other styles

21

Ayala, Ferran A. (Ferran Alberto) 1976. "Data base generation and modeling of Homogeneous Charge Compression Ignition using a rapid compression machine." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/88882.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Guilherme, Karen de Lolo. "Modelagem dinamica de compressores alternativaos." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264561.

Full text

Abstract:

Orientador: Paulo Roberto Gabriel Kurka<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-11T06:28:28Z (GMT). No. of bitstreams: 1 Guilherme_KarendeLolo_D.pdf: 2419963 bytes, checksum: 554ac4d31b46ae66bd610d91ebaa931a (MD5) Previous issue date: 2008<br>Resumo: Este trabalho tem como objetivo propor um modelo de dinâmica flexível dos componentes de um compressor alternativo monocilíndrico de refrigeração. Tal modelo representa um aperfeiçoamento da modelagem dinâmica utilizada, que supõe mancais rotativos fixos ou

APA, Harvard, Vancouver, ISO, and other styles

23

Burago, Igor. "Automated Attacks on Compression-Based Classifiers." Thesis, University of Oregon, 2014. http://hdl.handle.net/1794/18439.

Full text

Abstract:

Methods of compression-based text classification have proven their usefulness for various applications. However, in some classification problems, such as spam filtering, a classifier confronts one or many adversaries willing to induce errors in the classifier's judgment on certain kinds of input. In this thesis, we consider the problem of finding thrifty strategies for character-based text modification that allow an adversary to revert classifier's verdict on a given family of input texts. We propose three statistical statements of the problem that can be used by an attacker to obtain transfor

APA, Harvard, Vancouver, ISO, and other styles

24

Lee, Daeyup. "Autoignition measurements for oxygenated fuels in a rapid compression machine." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Asnoun, Ahmed. "Modélisation de la combustion dans une machine à compression rapide." Poitiers, 1990. http://www.theses.fr/1990POIT2302.

Full text

Abstract:

La machine a compression rapide (mcr) utilisee permet de simuler les phases compression et detente d'un cycle moteur. Les effets importants de la turbulence sur les transferts de masse et de chaleur, lors de l'admission et l'echappement, ont ete ecartes, afin de mieux connaitre les caracteristiques des conditions initiales et de bien evaluer les influences de certains parametres, sur les evolutions relatives de la combustion. Pour simuler d'une facon qualitative la combustion dans cette machine, nous nous sommes interesses a la methode de la combustion par tranches. Ce modele est simple et ne

APA, Harvard, Vancouver, ISO, and other styles

26

Materego, Myeji Chrysostom. "Auto-ignition characterisation of synthetic fuels via Rapid Compression Machine." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/12929/.

Full text

Abstract:

Availability and sustainability of fuels for road and air transport is essential for economic development and growth of any nation. New alternative fuels provide an opportunity to limit the use of ever declining conventional petroleum oil reserves as well as offsetting CO2 generation from their use. Liquid fuels have the highest energy density for transportation applications and synthetic liquid fuels, which can be produced from renewable non-food bio feedstock offer an exciting opportunity for partial or even total substitution of remaining fossil fuel supplies. It is therefore of great inter

APA, Harvard, Vancouver, ISO, and other styles

27

Leconte, Louis. "Compression and federated learning : an approach to frugal machine learning." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS107.

Full text

Abstract:

Les appareils et outils “intelligents” deviennent progressivement la norme, la mise en œuvre d'algorithmes basés sur des réseaux neuronaux artificiels se développant largement. Les réseaux neuronaux sont des modèles non linéaires d'apprentissage automatique avec de nombreux paramètres qui manipulent des objets de haute dimension et obtiennent des performances de pointe dans divers domaines, tels que la reconnaissance d'images, la reconnaissance vocale, le traitement du langage naturel et les systèmes de recommandation.Toutefois, l'entraînement d'un réseau neuronal sur un appareil à faible capa

APA, Harvard, Vancouver, ISO, and other styles

28

Chung, Jimmy Hok Leung. "Application of sequence prediction to data compression." Thesis, Manchester Metropolitan University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322411.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Shah, Mohak. "Sample compression, margins and generalization: Extensions to the set covering machine." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/29372.

Full text

Abstract:

This thesis studies the generalization behavior of algorithms in Sample Compression Settings. It extends the study of the Sample Compression framework to derive data-dependent bounds that give tighter guarantees to the algorithms where data-independent bounds such as the VC bounds are not applicable. It also studies the interplay between sparsity and the separating margin, of the classifier and shows how new compression based data-dependent bounds can be obtained that can exploit these two quantities explicitly. These bounds not only provide tight generalization guarantees but by themselves pr

APA, Harvard, Vancouver, ISO, and other styles

30

Park, Pyongwan. "Rapid compression machine measurements of ignition delays for primary reference fuels." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/14068.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Necula, Horia. "Modelisation d'une machine frigorifique a compression utilisant le mélange zéotropique R407C." Lyon, INSA, 1999. http://www.theses.fr/1999ISAL0065.

Full text

Abstract:

Ce travail concerne la modélisation en régime permanent d'une machine frigorifique à compression utilisant le mélange zéotropique R407C. Chaque élément constituant la machine est modélisé séparément afin de déterminer les fonctions reliant ses variables d'entrée à ses variables de sortie. Le programme d'ensemble qui réunit les modèles élémentaires ne comporte qu'un nombre restreint de variables d'entrée. Le bilan massique sur l'ensemble de la boucle est effectué et comparé à la masse du fluide frigorigène introduit dans la machine. Les échangeurs sont du type tubes et calandre avec des tubes c

APA, Harvard, Vancouver, ISO, and other styles

32

Bhari, Anil. "A Rapid Compression Machine with the Novel Concept of Crevice Containment." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1294677850.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Davies, Varun Anthony. "Autoignition Study of Ethanol and Heptane in a Rapid Compression Machine." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1415106446.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Latendresse, Mario. "Génération de machines virtuelles pour l'exécution de programmes compressés." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0012/NQ52170.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Saeung, Somchai. "Contribution à l'étude des machines frigorifiques à adsorption-compression." Nancy 1, 2006. http://docnum.univ-lorraine.fr/prive/SCD_T_2006_0134_SAEUNG.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Geras, Krzysztof Jerzy. "Exploiting diversity for efficient machine learning." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/28839.

Full text

Abstract:

A common practice for solving machine learning problems is currently to consider each problem in isolation, starting from scratch every time a new learning problem is encountered or a new model is proposed. This is a perfectly feasible solution when the problems are sufficiently easy or, if the problem is hard when a large amount of resources, both in terms of the training data and computation, are available. Although this naive approach has been the main focus of research in machine learning for a few decades and had a lot of success, it becomes infeasible if the problem is too hard in propor

APA, Harvard, Vancouver, ISO, and other styles

37

Buckney, David. "Clearance management in twin screw compressors." Thesis, City, University of London, 2017. http://openaccess.city.ac.uk/18235/.

Full text

Abstract:

Although the performance of twin screw compressors is heavily dependent on the rotor clearances within them, chamber models, used as design aids, allow for the specification of their magnitude and distribution but do not account for how these may vary during operation, as a result of internal temperature changes caused by the compression process. A validated procedure has therefore been developed to enable a chamber model to predict compressor performance, while including the effects of rotor and casing distortion resulting from dependant thermal effects. This has been achieved by the use of s

APA, Harvard, Vancouver, ISO, and other styles

38

Zouidi, Naïma. "Complexity reduction of VVC encoder using machine learning techniques : intra-prediction." Electronic Thesis or Diss., Rennes, INSA, 2023. http://www.theses.fr/2023ISAR0016.

Full text

Abstract:

En juillet 2020, la nouvelle norme de codage vidéo, appelle Versatile Video Coding (VVC), a été publiée par le groupe Joint Video Experts Team (JVET). Cette norme permet un niveau plus élevé de polyvalence avec une meilleure performance en compression vidéo par rapport à son prédécesseur, High-Efficiency Video Coding (HEVC). En effet, elle introduit plusieurs nouveaux outils de codage tels que les modes de prédiction intra à granularité plus fine (IPMs) et la division QuadTree Multi-type Tree (QTMT). Étant donné que la recherche des meilleures décisions de codage est généralement précédée par

APA, Harvard, Vancouver, ISO, and other styles

39

Chukanova, E. "Modelling of screw compressor plant operation under intermittent conditions." Thesis, City, University of London, 2016. http://openaccess.city.ac.uk/15825/.

Full text

Abstract:

Compressor plant frequently operates under unsteady conditions. This is due to pressure fluctuations, variable flow demand, or unsteady inlet conditions, as well as shaft speed variation. Also, following demand, compressor plants often work intermittently with frequent starts and stops. This may cause premature wear, decrease of compressor performance and even failure, which might cost millions of pounds to industry in downtime. However, there is still a lack of published data which describes intermittent plant behaviour, or predicts the effects of unsteady operation upon compressor plant perf

APA, Harvard, Vancouver, ISO, and other styles

40

Wolf, Robert S. "A study of diesel heat transfer distribution using a rapid compression machine." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/38718.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Ding, Zhimei. "Image Wavelet Compression Implementation Using a Run-Time Reconfigurable Custom Computing Machine." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34105.

Full text

Abstract:

This thesis presents the design and implementation of the Image Wavelet Compression (IWC) algorithm on Field Programmable Gate Arrays (FPGAs) by using the run-time reconfigurable custom computing machine design tool Janus. The four routines implementing the IWC are discussed. The structure of Janus is introduced and the IWC implementation design framework to use Janus structure is described in detail. The Janus hardware circuit design model, which has been used in the IWC implementation, is demonstrated here. The hardware implementation results are presented and analyzed, focusing on reconf

APA, Harvard, Vancouver, ISO, and other styles

42

Murashko, Oleksandr. "Using machine learning to select and optimise multiple objectives in media compression." Thesis, University of St Andrews, 2018. http://hdl.handle.net/10023/15657.

Full text

Abstract:

The growing complexity of emerging image and video compression standards means additional demands on computational time and energy resources in a variety of environments. Additionally, the steady increase in sensor resolution, display resolution, and the demand for increasingly high-quality media in consumer and professional applications also mean that there is an increasing quantity of media being compressed. This work focuses on a methodology for improving and understanding the quality of media compression algorithms using an empirical approach. Consequently, the outcomes of this research ca

APA, Harvard, Vancouver, ISO, and other styles

43

Silveira, Josemar. "Etude thermo-économique des machines frigorifiques à compression de vapeur." Lyon, INSA, 1997. http://www.theses.fr/1997ISAL0074.

Full text

Abstract:

L'optimisation d'une machine frigorifique ou d'une pompe à chaleur peut être envisagée sur un plan purement technique par analyse du cycle thermodynamique et localisation des principales sources d'irréversibilités. On peut améliorer cette optimisation de type exergétique, en introduisant des paramètres économiques. La méthode thermo-économique consiste alors à affecter à chaque élément une fonction principale de production essergétique. Le coût unitaire de ces produits essergétiques est ensuite optimisé au niveau de chaque élément puis de l'ensemble. Notre travail a consisté dans une première

APA, Harvard, Vancouver, ISO, and other styles

44

Lucchi, Michael <1989&gt. "Dynamic models for the analysis of vapour-compression refrigerating machines." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amsdottorato.unibo.it/9359/1/Michael%20Lucchi%20-%20Cycle%20XXXII.pdf.

Full text

Abstract:

Vapour-compression refrigeration systems represent one of the most relevant fields in terms of energy consumption. Among the research works aimed at reducing their environmental impact, those related to control systems are appealing, since they usually involve lower costs than interventions at system level and directly affects the energy consumption. In this work, a library of models able to reproduce the dynamics of the main components of a vapour-compression refrigeration machine has been developed in Matlab/SIMULINK to supply the building blocks to investigate the effects of different cont

APA, Harvard, Vancouver, ISO, and other styles

45

Raubenheimer, Gert. "Vibration excitation of axial compressor rotor blades." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17987.

Full text

Abstract:

Thesis (MScEng)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: Turbomachines are exposed to several environmental factors which may cause failure of components. One of these factors, high cycle fatigue, is often caused by blade utter. This thesis forms part of a project of the European Seventh Framework Programme (FP7), called project Future. Project Future is doing theoretical and experimental investigation into the occurrence of utter in turbomachinery. The objective of this thesis was to evaluate the effectiveness of a gas injection system as a means of exciting vibrations on

APA, Harvard, Vancouver, ISO, and other styles

46

Beaulieu, Shawn L. "Developing Toward Generality: Combating Catastrophic Forgetting with Developmental Compression." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/874.

Full text

Abstract:

General intelligence is the exhibition of intelligent behavior across multiple problems in a variety of settings, however intelligence is defined and measured. Endemic in approaches to realize such intelligence in machines is catastrophic forgetting, in which sequential learning corrupts knowledge obtained earlier in the sequence or in which tasks antagonistically compete for system resources. Methods for obviating catastrophic forgetting have either sought to identify and preserve features of the system necessary to solve one problem when learning to solve another, or enforce modularity such

APA, Harvard, Vancouver, ISO, and other styles

47

Nyong, Oku. "Development of a rapid compression machine for screening alternative fuel for gas turbines." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/17855/.

Full text

Abstract:

The reduction of NOx, soot and other emissions in aero or industrial gas turbines are engage by the concept of new combustion system such as the lean premixed pre-vaporized system. Which brings with it several engineering solutions such as combustion instabilities, flashback and autoignition. An experimental test rig named Sheffield Rapid Compression Machine (Shef-RCM) is designed to investigate the autoignition chemistry of alternative fuels relevant to gas turbine plant and to handle high boiling point long chain hydrocarbon fuels. The Shef-RCM incorporates a hydraulic stopping mechanism, pi

APA, Harvard, Vancouver, ISO, and other styles

48

Russell, Andrew D. "The manufacture of gas turbine compressor components by Metal Injection Moulding." Thesis, Edinburgh Napier University, 2015. http://researchrepository.napier.ac.uk/Output/9827.

Full text

Abstract:

Gas turbine compressor components manufactured from nickel base alloys have traditionally been precision die forged in sequential thermo-mechanical processing operations in order to achieve the desired geometry and mechanical properties. Metal Injection Moulding (MIM) is a competing three dimensional forming technology with proven applications in both the automotive and medical industries for producing industrial quantities of small, net shaped components. To date, the Metal Injection Moulding process has had limited exposure as a manufacturing process for gas turbine compressor components. Th

APA, Harvard, Vancouver, ISO, and other styles

49

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

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

50

Von, Backstrom Theodor W. "From turbo-machines to solar chimneys." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71762.

Full text

Abstract:

Thesis (PhD)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: This dissertation is basically a summary, with some interpretation, of published research by the author. The scope is limited to the fields of turbo-machinery, computational fluid dynamics and solar chimney power plants. The main contribution in the field of turbo-machinery in general is in the development of a through-flow method that automatically satisfies mass conservation. Concerning fan design, the contributions are the realization of the importance of the exit kinetic energy in the determination of the efficiency of

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!