Dissertations / Theses: 'Tractor units'

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Кожушко, Андрій Павлович. "Підвищення техніко-економічних показників колісних тракторів з безступінчастими трансмісіями раціональною зміною параметрів регулювання гідромашин в процесі розгону." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/20967.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.22.02 – автомобілі та трактори. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2016 р. Дисертацію присвячено підвищенню техніко-економічних показників машинно-тракторних агрегатів з гідрооб'ємно-механічними трансмісіями за рахунок використання раціональних законів зміни параметрів регулювання гідромашин гідрооб'ємної передачі в процесі розгону. Складена комплексна математична модель систем машинно-тракторного агрегату, вдосконалено математичний опис зміни сили тяги на гаку шляхом урахування процесу заглиблення плуга в процесі виходу на технологічний режим при виконанні операції "оранка". Встановлено вплив зміни робочого об'єму гідромотору при різних законах зміни параметрів регулювання гідромашин гідрооб'ємної передачі на динаміку розгону машинно-тракторного агрегату. Визначено вплив зміни часу розгону машинно-тракторного агрегату при різних законах зміни параметрів регулювання гідромашин гідрооб'ємної передачі. Сформовано раціональні закони зміни параметрів регулювання гідромашин гідрооб'ємної передачі, при яких підвищуються техніко-економічні показники машинно-тракторного агрегату.
The dissertation for obtaining a scientific degree of Candidate of Science (Technology) on the specialty 05.22.02 – automobiles and tractors. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2016. Dissertation is devoted to improve the technical and economic performance of wheeled tractors with hydrovolumetric mechanical transmission by detecting changes in the parameters of rational regulation of hydromachines during acceleration. Compiled complex mathematical model of the system tractor units improved the mathematical description of the changes tractive force on the hook by taking into account the process of deepening the plow in entering the technological mode of operation "plowing". The influence of changes in the working volume hydraulic parameters changes various laws regulating hydraulic machines hydrovolumetric transmission to dynamics of dispersal tractor unit. The influence of changes in time acceleration tractor unit under various laws of parameters regulating hydraulic machines hydrovolumetric transmission. Formed rational laws change control parameters of hydrovolumetric gear in which the increase of technical and economic parameters of the machine and tractor unit.

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Кожушко, Андрій Павлович. "Підвищення техніко-економічних показників колісних тракторів з безступінчастими трансмісіями раціональною зміною параметрів регулювання гідромашин в процесі розгону." Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/20971.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.22.02 – автомобілі та трактори. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2016 р. Дисертацію присвячено підвищенню техніко-економічних показників машинно-тракторних агрегатів з гідрооб'ємно-механічними трансмісіями за рахунок використання раціональних законів зміни параметрів регулювання гідромашин гідрооб'ємної передачі в процесі розгону. Складена комплексна математична модель систем машинно-тракторного агрегату, вдосконалено математичний опис зміни сили тяги на гаку шляхом урахування процесу заглиблення плуга в процесі виходу на технологічний режим при виконанні операції "оранка". Встановлено вплив зміни робочого об'єму гідромотору при різних законах зміни параметрів регулювання гідромашин гідрооб'ємної передачі на динаміку розгону машинно-тракторного агрегату. Визначено вплив зміни часу розгону машинно-тракторного агрегату при різних законах зміни параметрів регулювання гідромашин гідрооб'ємної передачі. Сформовано раціональні закони зміни параметрів регулювання гідромашин гідрооб'ємної передачі, при яких підвищуються техніко-економічні показники машинно-тракторного агрегату.
The dissertation for obtaining a scientific degree of Candidate of Science (Technology) on the specialty 05.22.02 – automobiles and tractors. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2016. Dissertation is devoted to improve the technical and economic performance of wheeled tractors with hydrovolumetric mechanical transmission by detecting changes in the parameters of rational regulation of hydromachines during acceleration. Compiled complex mathematical model of the system tractor units improved the mathematical description of the changes tractive force on the hook by taking into account the process of deepening the plow in entering the technological mode of operation "plowing". The influence of changes in the working volume hydraulic parameters changes various laws regulating hydraulic machines hydrovolumetric transmission to dynamics of dispersal tractor unit. The influence of changes in time acceleration tractor unit under various laws of parameters regulating hydraulic machines hydrovolumetric transmission. Formed rational laws change control parameters of hydrovolumetric gear in which the increase of technical and economic parameters of the machine and tractor unit.

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Körtgen, Christopher, Gabriele Morandi, Georg Jacobs, and Felix Straßburger. "Automated calibration of a tractor transmission control unit." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199792.

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This paper presents an approach for an automated calibration process for electronic control units (ECU) of power split transmissions in agricultural tractors. Today the calibration process is done manually on a prototype tractor by experts. In order to reduce development costs the calibration process is shifted from prototype testing to software modelling. Simultaneous optimization methods are used within the software modelling to calculate new parameters. The simultaneous optimization includes objective evaluation methods to evaluate the tractor behaviour. With the combination of both methods inside the software modelling, the calibration process can be automated. The success of this approach depends on the quality of the software modelling. Therefore the identification of the initial prototype behaviour and the fitting of the tractor software model is done at the beginning. At the end of the automated calibration the validation and fine-tuning of the calculated parameters are done on the real tractor. These steps are condensed to a five step automated calibration process which includes simultaneous optimization and objective evaluation methods in several applications. After the detailed discussion of this automated calibration process one function of the ECU (one transmission component) will be calibrated through this process as example.

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Sewell, Andrew J. "Multirole power units in cereal harvesting : an economic case for adoption." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295107.

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Semmler, John Gregory. "Effect of training on corticospinal control of human motor units /." Title page, table of contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phs471.pdf.

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Kozhushko, A. P., and K. Riezva. "Comparison a running smoothness of a wheeled tractor with a semitrailer tank or unit while driving on asphalt-concrete surface." Thesis, Scientific Route, Estonia, 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/46135.

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Mehta, Vikas Chandra. "PERFORMANCE OF PAN-TILT TRACKER BASED ON THE PIN-HOLE LENS MODEL." UKnowledge, 2009. http://uknowledge.uky.edu/gradschool_theses/596.

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In the modern day, recognition and tracking of face or the iris is potentially one of the most powerful ways of differentiating between an authentic person and an imposter. Our method uses stereo vision to track the 3-Dimensional coordinates of a target equivalent to a person’s eyes and using a pan-tilt unit we target these areas for additional processing such as iris or facial imaging. One of the most important parts involved in tracking is the way the pan-tilt unit is calibrated. There have been techniques in the past where PTZ (Pan-tilt-zoom) digital camera has been used and calibrated using self calibration techniques involving a checker board calibration grid but the tracking error was found to be large in these techniques. We introduce a more accurate form of calibration of the pantilt unit using photogrammetric calibration technique and view the pan-tilt unit as an emulation of a Pinhole Lens Model to detect and track the target. The system is demonstrated on ideal targets.

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Мітцель, Микола Олександрович. "Вплив особливих зон роботи гідропередачі на техніко-економічні показники колісних тракторів з безступінчастими гідрооб'ємно-механічними трансмісіями." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22578.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.22.02 – автомобілі та трактори. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2016 р. Дисертацію присвячено підвищенню техніко-економічних показників машинно-тракторних агрегатів оснащених гідрооб'ємно-механічними трансмісіями з диференціалом "на виході" за рахунок розміщення агротехнічних швидкостей в особливих зонах роботи гідрооб'ємної передачі. Складена комплексна математична модель особливих зон роботи гідрооб'ємної передачі, що дозволяє досліджувати робочі процеси в межах особливої зони. Розглянуто процес утворення особливої зони на висхідній та низхідній регулювальній характеристиці гідрооб'ємно-механічної трансмісії. Встановлено вплив режимів навантаження та конструктивних параметрів трансмісії на ширину особливої зони та загальний ККД трансмісії. Визначено вплив часу розгону колісного трактору на величину сплеску робочого тиску при виході з особливої зони. Сформульовано рекомендації до проектування перспективних схем трансмісій з диференціалом "на виході", що дозволять досягати максимального ККД трансмісії в межах швидкостей основних енергоємних сільськогосподарських операцій. Експериментальними дослідженнями визначено точність математичної моделі втрат в гідрооб'ємній передачі К. І. Городецького. Експериментально досліджено достовірність математичної моделі особливих зон на лабораторному стенді та колісному тракторі, та підтверджено рекомендації щодо перспективних схем гідрооб'ємно-механічних трансмісій з диференціалом "на виході".
The dissertation for obtaining a scientific degree of Candidate of Science (Technology) on the specialty 05.22.02 – automobiles and tractors. –National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2016. The dissertation is devoted to improving technical and economic indicators of machine-tractor units equipped input-coupled power-split hydrovolumetric mechanical transmissions by placing farming velocity in special areas of work hydrovolumetric transmission. Compiled complex mathematical model special zones of hydrovolumetric transmission that allows you to explore work processes within the special zone. The process of creation of special zones ascending for and descending regulating characteristics. The influence of the mode load and design parameters of the transmission to the width of the special zones and the overall efficiency of the transmission. The effect of time acceleration wheeled tractor a surge in the value of the operating pressure at the outlet of the special zones. Recommendations for the design of perspective schemes output coupled transmissions that will achieve maximum efficiency transmission speeds within the major energy intensive agricultural operations. Experimental studies determined the accuracy of the mathematical model of hydraulic losses in the transmission by K. Gorodetsky's mathematical model. Experimentally investigated the accuracy of the mathematical model of special zones on the laboratory stand and wheeled tractors, and found the references to perspective schemes input-coupled power-split hydrovolumetric mechanical transmissions.

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Мітцель, Микола Олександрович. "Вплив особливих зон роботи гідропередачі на техніко-економічні показники колісних тракторів з безступінчастими гідрооб'ємно-механічними трансмісіями." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22568.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.22.02 – автомобілі та трактори. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2016 р. Дисертацію присвячено підвищенню техніко-економічних показників машинно-тракторних агрегатів оснащених гідрооб'ємно-механічними трансмісіями з диференціалом "на виході" за рахунок розміщення агротехнічних швидкостей в особливих зонах роботи гідрооб'ємної передачі. Складена комплексна математична модель особливих зон роботи гідрооб'ємної передачі, що дозволяє досліджувати робочі процеси в межах особливої зони. Розглянуто процес утворення особливої зони на висхідній та низхідній регулювальній характеристиці гідрооб'ємно-механічної трансмісії. Встановлено вплив режимів навантаження та конструктивних параметрів трансмісії на ширину особливої зони та загальний ККД трансмісії. Визначено вплив часу розгону колісного трактору на величину сплеску робочого тиску при виході з особливої зони. Сформульовано рекомендації до проектування перспективних схем трансмісій з диференціалом "на виході", що дозволять досягати максимального ККД трансмісії в межах швидкостей основних енергоємних сільськогосподарських операцій. Експериментальними дослідженнями визначено точність математичної моделі втрат в гідрооб'ємній передачі К. І. Городецького. Експериментально досліджено достовірність математичної моделі особливих зон на лабораторному стенді та колісному тракторі, та підтверджено рекомендації щодо перспективних схем гідрооб'ємно-механічних трансмісій з диференціалом "на виході".
The dissertation for obtaining a scientific degree of Candidate of Science (Technology) on the specialty 05.22.02 – automobiles and tractors. –National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2016. The dissertation is devoted to improving technical and economic indicators of machine-tractor units equipped input-coupled power-split hydrovolumetric mechanical transmissions by placing farming velocity in special areas of work hydrovolumetric transmission. Compiled complex mathematical model special zones of hydrovolumetric transmission that allows you to explore work processes within the special zone. The process of creation of special zones ascending for and descending regulating characteristics. The influence of the mode load and design parameters of the transmission to the width of the special zones and the overall efficiency of the transmission. The effect of time acceleration wheeled tractor a surge in the value of the operating pressure at the outlet of the special zones. Recommendations for the design of perspective schemes output coupled transmissions that will achieve maximum efficiency transmission speeds within the major energy intensive agricultural operations. Experimental studies determined the accuracy of the mathematical model of hydraulic losses in the transmission by K. Gorodetsky's mathematical model. Experimentally investigated the accuracy of the mathematical model of special zones on the laboratory stand and wheeled tractors, and found the references to perspective schemes input-coupled power-split hydrovolumetric mechanical transmissions.

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Morcrette, Quentin. "Tracer la route : les cartes d'itinéraire du papier à l'écran, usages et représentations : contribution pour une étude diachronique comparée (France/Etats-Unis)." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE2138/document.

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Les technologies du numérique modifient profondément la manière dont les sociétés appréhendent et se représentent leur espace. La cartographie n’est pas à l’écart de ces changements et les cartes sont de plus en plus nombreuses et sont utilisées sous de nouvelles formes. C’est en particulier le cas de la consultation d’itinéraires uniques, rendue plus aisée par les évolutions techniques et technologiques. L’usage de ces itinéraires est aujourd’hui l’une des principales fonctionnalités des cartes numériques, dont un grand nombre sont issues de sociétés implantées aux États-Unis.Comment appréhender, dans le cadre d’une analyse diachronique et comparatiste, le rôle des cartes d’itinéraire dans la cartographie numérique? S’agit-il d’une nouveauté ou de la réactualisation d’une forme cartographique plus ancienne ? Quelle place tient ce type de représentations dans une perspective croisée?La thèse propose de répondre à ces questions par une analyse large à trois entrées : cartobibliographique, sémiologique et processuelle, en se basant sur des corpus de cartes issus de la Bibliothèque nationale de France et de laNewberry Library. Les principaux résultats de ce travail apportent un éclairage sur les changements en cours avec le passage d’une cartographie majoritairement papier à une cartographie majoritairement écran. Ils invitent finalement à penser ces changements à travers une redéfinition du statut de la carte à l’ère numérique
Digital technologies deeply change the way in which societies grasp their environment and represent space Cartography is not exempt from these changes, maps are more widespread than ever and are being used for new purposes. Among them, the use of route specific maps, made easier by technical and technological developments. Many online maps are used for itineraries, and most of them come from United States-based corporations.These observations raise the questions of how to understand this specific use of maps when put in a chronological and comparative perspective ? Is this an innovation or rather an actualization of a previous type of mapping practice ? What is the status of these itineraries when studied in a multifaceted perspective ?This research addresses these questions using three main approches : cartobibliographical, semiological and processual, and relying on extensive map collections from the Bibliothèque nationale de France and the Newberry Library. The main results bring new insights on the changes taking place with the transition from a primarily paper cartography to a primarily on-screen cartography and call for a redefinition of the status of maps in the digital era

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Бадейнов, Олександр Михайлович. "Динаміка навантажень та покращення пружно-демпфуючих характеристик тягово-зчіпних пристроїв триланкового автопоїзда." Diss., Національний університет «Львівська політехніка», 2021. https://ena.lpnu.ua/handle/ntb/56786.

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Hutton, Hayley. "Clinical features and outcome of patients with severe lower respiratory tract infection admitted to a Paediatric Intensive Care Unit in the Western Cape, South Africa." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/24501.

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Objective: Acute lower respiratory tract infection (ALRTI) remains an important cause of childhood morbidity and mortality in low and middle income countries (LMIC). This study aims to describe the clinical features of children admitted to a Pediatric Intensive Care Unit (PICU) with severe ALRTI and to investigate risk factors, clinical course and in-hospital outcome. Design: Retrospective cohort study Setting: Red Cross War Memorial Children's Hospital, Cape Town, South Africa Patients: 265 children (0-12years) admitted to the PICU during 2012 with a primary diagnosis of ALRTI. Intervention: None. Measurements and main results: 265 patients [median (interquartile range, IQR) age 4 months (2-12months)] were admitted with ALRTI, 157(59.3%) were male. Co-morbid disease was present in 102(38.5%) including cardiac disease in 42(15.9%) or tuberculosis in 7(6.4%) . While only 27(10.2%) were HIV infected, 87(32.8%) children were HIV exposed. The in-hospital mortality was 34(12.8%); 24(9.1%) died in PICU and a further 10 in the medical wards following discharge from PICU. The median duration of ICU and hospital stay was 4.0 days (2.0-8.0) and 12.5 days (7.9-28.0) respectively. Most [192 (72.5%)] children required invasive ventilatory support, while 42 (15.8%) patients required cardiac inotropic support. Risk factors for mortality included severe malnutrition (Odds ratio (OR) 8.25; 95% CI 1.47- 46.21); informal housing without access to piped water and/or electricity (OR11.87; CI 1.89- 20.81); or need for inotropic support (OR 44.35; CI 8.20-239.92). HIV exposure or infection was associated with a significantly longer duration of hospital stay (p=0.002). Conclusion: Severe ALRTI occurs predominantly in young infants and is associated with a high mortality. Several sociodemographic risk factors impact on the risk of severe disease and poorer outcome.

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Омельяненко, Ольга Владимировна, and Валерий Петрович Северин. "Управление потоками мощности электропоезда с накопителем энергии." Thesis, Національний університет біоресурсів і природокористування України, 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33130.

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Описывается система тягового привода электроподвижного состава с накопителем энергии, рассмотрены режимы ее работы, предложена система управления процессами обмена энергией между тяговыми электродвигателями, накопителем энергии и контактной сетью, а также определена энергетическая эффективность предлагаемой системы.
A system of a traction unit with an energy storage device was described, operation modes of this system were considered, energy management system which controls the power flow between traction engines, storage device and trolley line was proposed, it's energy efficiency was calculated.

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Шевцов, Вадим Михайлович. "Вибір і обґрунтування температурних режимів роботи гідрооб'ємно-механічної трансмісії колісного трактора." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38019.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.22.02 – автомобілі та трактори. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2018 р. Дисертацію присвячено підвищенню ефективності використання тракторів з ГОМТ за рахунок визначення впливу температурних режимів роботи ГОП на показники роботи трансмісії, обґрунтуванню параметрів системи охолодження гідрооб'ємної передачі. Проведено аналіз щодо впливу температури робочої рідини на роботу гідросистеми та підходів щодо визначення температурних режимів роботи гідрооб'ємної передачі. Складена розширена матрична математична модель, яка відрізняється урахуванням, окрім кінематичних та силових, температурних режимів роботи ГОП в складі ГОМТ трактора та дозволяє визначити перепад температури робочої рідини на різних ланках гідросистеми в залежності від режимів роботи. Проведені експериментальні дослідження підтвердили адекватність складеної математичної моделі. Проаналізовано характер зміни температури робочої рідини в ГОП на робочих та транспортних передачах. Виявлено залежність загального ККД трансмісії на кожній передачі від температурних режимів роботи ГОП в її складі та сформовані рекомендації щодо методології вибору системи охолодження.
The thesis for granting the scientific degree of Candidate of technical sciences in the specialty 05.22.02 – cars and tractors. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis is devoted to increasing the efficiency of application the tractors based on hydrovolumetric mechanical transmissions (HVMT) through the determination of influence of temperature modes on hydrovolumetric transmission (HVT) characteristics justification of parameters of cooling system in HVT. The influence on temperature of working fluid on the work of hydro system has been carried out. There have been determined the approaches in the determination of temperature modes of HVT. The parameters of cooling system of HVT have been justified. There has been developed the extended mathematical model which considers the temperature, kinematics and power modes of volumetric hydraulic gear in HVMT of the wheel tractor. There also has been developed the mathematic model as a matrix that includes the description of kinematic parameters of HVMT, power parameters and energy conversion efficiency of all gearing parts and thermal characteristics. The provided research approved the adequacy of developed mathematical model. The variation of temperature of working fluid in the working and transport gear may be described as a curve with a maximum in a special zone. There has been determined the influence of temperature on general and volumetric energy conversion efficiency for the each gear and the recommendation for choosing the cooling system that consider the redistribution of power fluids in HVMT were performed.

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15

Nfor, Nformi Emmanuel. "Sequence stratigraphic characterisation of petroleum reservoirs in Block 11b/12b of the Southern Outeniqua Basin." University of the Western Cape, 2011. http://hdl.handle.net/11394/2924.

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Magister Scientiae - MSc
The main purpose of this study was to identify and characterize the various sand prone depositional facies in the deepwater Southern Outeniqua Basin which generally tend to form during lowstand (marine regression) conditions producing progradational facies. It made use of sequence stratigraphy and turbidite facies models to predict the probable location of deepwater reservoirs in the undrilled Southern Outeniqua Basin using data from basin margin Pletmos Basin and the deepwater Southern Outeniqua Basin. Basin margin depositional packages were correlated in time and space with deepwater packages. It was an attempt at bridging the gap between process-related studies of sedimentary rocks and the more traditional economic geology f commercial deposits of petroleum using prevailing state-of-the-art in basin analysis. It enabled the most realistic reconstructions of genetic stratigraphy and offered the greatest application in exploration. Sequence stratigraphic analysis and interpretation of seismics, well logs, cores and biostratigraphic data was carried out providing a chronostratigraphic framework of the study area within which seismic facies analysis done. Nine (9) seismic lines that span the shallow/basin margin Pletmos basin into the undrilled deepwater Southern Outeniqua basin were analysed and interpreted and the relevant seismic geometries were captured. Four (4) turbidite depositional elements were identified from the seismic lines: channel, overbank deposits, haotic deposits and basin plain (basin floor fan) deposits. These were identified from the relevant seismic geometries (geometric attributes) observed on the 2D seismic lines. Thinning attributes, unconformity attributes and seismic facies attributes were observed from the seismic lines. This was preceded by basic structural analyses and interpretation of the seismic lines. according to the structural analysis and interpretation, deposition trended NW-SE and NNW-SSE as we go deepwater into the Southern Outeniqua basin. Well logs from six (6) of the interpreted wells indicated depositional channel fill as well as basin floor fans. This was identified in well Ga-V1 and Ga-S1 respectively. A bell and crescent shape gamma ray log signature was observed in well Ga-V1 indicating a fining up sequence as the channel was abandoned while an isolated massive mound-shape gamma ray log signature was observed in Ga-S1 indicating basin plain well-sorted sands. Core analyses and interpretation from two southern-most wells revealed three (3) facies which were derived based on Walker‘s 1978, turbidite facies. The observed facies were: sandstone, sand/shale and shale facies. Sequence stratigraphic characterisation of petroleum reservoirs in block 11b/12b of the Southern Outeniqua Basin. Cores of well Ga-V1 displayed fine-grained alternations of thin sandstone beds and shales belonging to the thin-bedded turbidite facies. This is typical of levees of the upper fan channel but could easily be confused with similar facies on the basin plain. According to Walker, 1978 such facies form under conditions of active fan progradation. Ga-S1 cores displayed not only classic turbidite facies where there was alternating sand and shale sections but showed thick uninterrupted sections of clean sands. This is typical of basin plain deposits. Only one well had biostratigraphic data though being very limited in content. This data revealed particular depth sections and stratigraphic sections as having medium to fast depositional rates. Such rates are characteristic of turbidite deposition from turbidity currents. This study as well as a complementary study by Carvajal et al., 2009 revealed that the Southern Outeniqua basin is a sand-prone basin with many progradational sequences in which tectonics and sediment supply rate have been significant factors (amongst others such as sea level change) in the formation of these deepwater sequences. In conclusion, the Southern Outeniqua basin was hereby seen as having a viable and unexplored petroleum system existing in this sand prone untested world class.
South Africa

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16

Шевцов, Вадим Михайлович. "Вибір і обґрунтування температурних режимів роботи гідрооб'ємно-механічної трансмісії колісного трактора." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38015.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.22.02 – автомобілі та трактори. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2018 р. Дисертацію присвячено підвищенню ефективності використання тракторів з ГОМТ за рахунок визначення впливу температурних режимів роботи ГОП на показники роботи трансмісії, обґрунтуванню параметрів системи охолодження гідрооб'ємної передачі. Проведено аналіз щодо впливу температури робочої рідини на роботу гідросистеми та підходів щодо визначення температурних режимів роботи гідрооб'ємної передачі. Складена розширена матрична математична модель, яка відрізняється урахуванням, окрім кінематичних та силових, температурних режимів роботи ГОП в складі ГОМТ трактора та дозволяє визначити перепад температури робочої рідини на різних ланках гідросистеми в залежності від режимів роботи. Проведені експериментальні дослідження підтвердили адекватність складеної математичної моделі. Проаналізовано характер зміни температури робочої рідини в ГОП на робочих та транспортних передачах. Виявлено залежність загального ККД трансмісії на кожній передачі від температурних режимів роботи ГОП в її складі та сформовані рекомендації щодо методології вибору системи охолодження.
The thesis for granting the scientific degree of Candidate of technical sciences in the specialty 05.22.02 – cars and tractors. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis is devoted to increasing the efficiency of application the tractors based on hydrovolumetric mechanical transmissions (HVMT) through the determination of influence of temperature modes on hydrovolumetric transmission (HVT) characteristics justification of parameters of cooling system in HVT. The influence on temperature of working fluid on the work of hydro system has been carried out. There have been determined the approaches in the determination of temperature modes of HVT. The parameters of cooling system of HVT have been justified. There has been developed the extended mathematical model which considers the temperature, kinematics and power modes of volumetric hydraulic gear in HVMT of the wheel tractor. There also has been developed the mathematic model as a matrix that includes the description of kinematic parameters of HVMT, power parameters and energy conversion efficiency of all gearing parts and thermal characteristics. The provided research approved the adequacy of developed mathematical model. The variation of temperature of working fluid in the working and transport gear may be described as a curve with a maximum in a special zone. There has been determined the influence of temperature on general and volumetric energy conversion efficiency for the each gear and the recommendation for choosing the cooling system that consider the redistribution of power fluids in HVMT were performed.

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17

Михеев, А. Ю., and A. Y. Mikheev. "Повышение эффективности использования подвижного состава на предприятии ООО «Жасмин» г. Михайловска : магистерская диссертация." Master's thesis, б. и, 2020. http://hdl.handle.net/10995/86597.

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The aim of the master's thesis is to develop theoretical and practical methods for increasing the efficiency of the enterprise’s vehicles and ensuring the development of the quality of operation of the operational service. The practical significance of the work lies in the application of methods and calculations to improve the efficiency of the operational and maintenance services of the enterprise LLC “Jasmine”. The introduction of the results of work at the enterprise will increase the efficiency of the use of rolling stock due to its rational use, as well as reduce material costs for transportation. In the master's thesis, an analysis was made of the activity of the enterprise, the possibility of using a tractor- transport unit in the construction of roads was considered, the construction of a transport bogies for semi trailers was proposed, and the maneuverability indicators of a motor train were determined.
Целью магистерской диссертации является разработка теоретических и практических методов повышения эффективности работы транспортных средств предприятия и обеспечение развития качества работы эксплуатационной службы. Практическое значение работы заключается в применении методик и расчетов для повышения эффективности работы эксплуатационной и обслуживающей службы предприятия ООО «Жасмин». Внедрение результатов работы на предприятии позволит повысить эффективность использования подвижного состава за счет рационального его использования, а также снизить материальные затраты на транспортные работы. В магистерской диссертации проведен анализ деятельности предприятия, рассмотрена возможность применения тракторно-транспортного агрегата при строительстве автомобильных дорог, предложена конструкция подкатной тележки для полуприцепа, а также определены показатели маневренности автотракторного поезда.

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18

Vestin, Albin, and Gustav Strandberg. "Evaluation of Target Tracking Using Multiple Sensors and Non-Causal Algorithms." Thesis, Linköpings universitet, Reglerteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160020.

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Today, the main research field for the automotive industry is to find solutions for active safety. In order to perceive the surrounding environment, tracking nearby traffic objects plays an important role. Validation of the tracking performance is often done in staged traffic scenarios, where additional sensors, mounted on the vehicles, are used to obtain their true positions and velocities. The difficulty of evaluating the tracking performance complicates its development. An alternative approach studied in this thesis, is to record sequences and use non-causal algorithms, such as smoothing, instead of filtering to estimate the true target states. With this method, validation data for online, causal, target tracking algorithms can be obtained for all traffic scenarios without the need of extra sensors. We investigate how non-causal algorithms affects the target tracking performance using multiple sensors and dynamic models of different complexity. This is done to evaluate real-time methods against estimates obtained from non-causal filtering. Two different measurement units, a monocular camera and a LIDAR sensor, and two dynamic models are evaluated and compared using both causal and non-causal methods. The system is tested in two single object scenarios where ground truth is available and in three multi object scenarios without ground truth. Results from the two single object scenarios shows that tracking using only a monocular camera performs poorly since it is unable to measure the distance to objects. Here, a complementary LIDAR sensor improves the tracking performance significantly. The dynamic models are shown to have a small impact on the tracking performance, while the non-causal application gives a distinct improvement when tracking objects at large distances. Since the sequence can be reversed, the non-causal estimates are propagated from more certain states when the target is closer to the ego vehicle. For multiple object tracking, we find that correct associations between measurements and tracks are crucial for improving the tracking performance with non-causal algorithms.

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19

Afrathim, Afthab, and 安浩宇. "Improving the Stability of the Tractor Semi-Trailer by Steering the Rear Wheels of the Tractor Unit Using an Optimal Controller." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/89v7e9.

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碩士
國立臺灣科技大學
機械工程系
106
This thesis investigates a strategy that seeks to improve the stability of the tractor semi-trailer by controlling the rear wheels of the tractor unit to track a desired articulation angle. A linear quadratic regulator controller with tracking capability was designed in Simulink to track the desired articulation angle using tractor rear wheel steering. The performance of the controller was tested by interfacing Simulink with TruckSim, thereby allowing the use of TruckSim’s accurate vehicle model. From the simulations, it was found that by tracking the desired articulation angle, the roll and yaw stability of the tractor semi-trailer improved except in cases where sharp inputs are given in low road-tire friction coefficient conditions, e.g. J-turn. It was also found that it is crucial for the driver/system to consider the rear wheel kinematics of the tractor unit when deciding on the steering input of the front wheels. To verify the simulation results, scaled vehicle testing, using the principle of dynamic similarity was attempted; however, due to the speed limitations of the designed scaled articulated vehicle, the pi-groups could not be matched successfully, therefore, the simulation results could not be verified using scaled vehicle testing.

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20

LI, CHEN GUNG, and 陳光立. "Study on Dynamic Performance of Traction Motors for Electrical Multiple Units of Mass Rapid Transit." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/57853730462549763543.

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碩士
華梵大學
機電工程研究所
94
A mass rapid transit (MRT) vehicle usually consists of eleven subsystems to perform functions in each aspect as to achieve demanded performance for its successful operation, and it is also realized the driving subsystem is the most vital equipment of an effective accomplishment during the running processes. Within this research, vector-oriented control approach was first adopted in establishing a simple mathematical model, which characterized the induction motors used in the mass rapid transit vehicle, and a utility, POWER SYSTEM BLOCKSET, of a well-known commercial code MATLAB/SIMULINK was employed to design the driver model for the induction motors and to simulate the MRT vehicle’s overall operations from starting, accelerating, sliding, up to desecrating and stop. Furthermore, basic control theories such PI and Fuzzy control approaches were explored in examining the control performances of a MRT vehicle on the test track and in comparisons with the experimental data. It was verified that the fuzzy controller developed in this thesis can certainly fulfill the operating necessities of the MRT vehicles, which are even though conducted using the conventional PI controlling method. Consequently, the fuzzy control approach for maneuvering MRT vehicles is a prospective candidate with more flexibility in the near future.

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21

Kao, Yi-Xuan, and 高義炫. "DC Traction power short circuit test/analysis and Protection unit configurations." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/73209688248270274654.

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碩士
華梵大學
機電工程研究所
95
The DC traction power analysis can be determined the quantities, capacities and locations of the traction supply substations. This paper is to develop the best protection unit configurations of the power supply system by using the DC traction power short circuit test. During the DC traction power short circuit test, the components such as diodes, circuit breakers, switches and cable will be monitored individually. When the failures or short circuits are occurred, the increasing values of voltage and current on each component of the system will be recorded at the same time. After we analyze varies of voltage and current on each component, we use both experimental and theoretical methods to calculate the parameters of inductance and resistance of the system. As a result, we can find out the best protection unit configurations of the power supply system.

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Fang, Chih-Hsuan, and 方志軒. "Implementation and Investigation of Wearable Eye Tracker with Inertial Measurement Unit and Marker Compensations." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/hmewdj.

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碩士
國立中興大學
電機工程學系所
106
To achieve a more convenient life, the human-computer interaction always has been a researching topic. Due to the rising of the consumer electronics in recent years, people are increasing the requirement for wearable devices. A wearable eye tracker with the function of human-computer interaction will also be developed quickly. In this thesis, we develop a low-cost and user-friendly wearable eye tracker system. After the user completes the calibration process, the proposed system can keep the accuracy of the predicted gazing point when the head posture is changed, or the head position is moved. In the thesis, we propose a NIR-eye tracker system with a NIR camera for capturing the eye image, and a visible-light camera for capturing the view frame of the user. Through the random sample consensus (RANSAC) process and the ellipse fitting, the center of the pupil can be found. Then the system uses this information to estimate where the user is gazing. The initial calibration is done by tracking the finger with finger sleeve, and the tracked finger points will draw the calibration area in the space. Two kinds of geometric transformations, i.e. pseudo affine and projection, are used in the proposed calibration design. Besides, when the head posture is changed or the head is moved, the eye tracker usually needs to recalibration. In this thesis, we propose a new head compensation method, which combines the inertial measurement unit (IMU) and a reference marker in the outward view. By the proposed method, the proposed design can keep the accuracy without recalibration after the head pose is changed or moved. By experiment on the PC with Intel Core i7-7700 at 3.60 GHz operating frequency, the results show that the errors of horizontal and vertical placements are 1.07°~1.73° and 1.25°~3.35° respectively by using pseudo affine transformation to predict the gazing points. After the head moves backward 20 cm from the initial location, the errors of horizontal and vertical placements are 2.08°~2.64° and 0.75°~3.52°, respectively; The errors of horizontal and vertical placements are 0.98°~2.70°and 1.17°~3.69° respectively by using projection transformation to predict the gazing points. When the head moves backward 20 cm from the initial position, the errors of horizontal and vertical placements are 2.04°~2.58°and 0.46°~2.10, respectively. To compare the performance between the two transformations, the proposed method by the pseudo affine transformation operates 4.08 us/frame to predict the gazing points, while the method by the projection transformation performs 7.37us/frame. For the implementation with the NVIDIA Jetson TX2 embedded platform, the core algorithm performs about 27.93 frame/sec for image processing. The proposed method with the pseudo affine transformation operates 18.83 us/frame to predict the gazing point, while the method with the projection transformation performs 28.75 us/frame.

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ROUČKA, František. "Využití traktorů s pásovým podvozkem v podniku zemědělské prvovýroby." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-376045.

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The diploma thesis, which deals with the usage of tractors with tracked chassis in the agricultural primary production, presents in a literature overview the design of the chassis of wheeled tractors, which is supplemented with front axle suspension systems. Main theoretical part of the overview describes the construction of the tracked chassis. There are mentioned and described all units of significant producers of tracked tractors. Further, the work describes the design of suspension of tracked tractors and the possibility of control of the tracked chassis. The theoretical part ends with a chapter focusing on semi-tracked tractors. Practical part shows the methodology and results of the measuring by use of the tracked tractors in the agricultural company annual production, focused on the utilization of each Tractor-set. Thesis is completed by characteristic of the general agriculture company with the analysis of the investments and costs.

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24

Shen, Chiu-Hsiang, and 沈秋香. "Risk Factors of Healthcare- Associated Urinary Tract Infection in Intensive Care Units Patients of Regional Teaching Hospital." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/mbc953.

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碩士
美和科技大學
護理系健康照護碩士班
106
Background: Nearly 2 millions nosocomial hospital infections occur every year and urinary tract infection accounts for around 40% which is the largest proportion of healthcare-associated infections. Urinary tract infection is the most common infection in intensive care units and causes 31.8% of healthcare-associated infections. Urinary tract infection is an important topic needed to be concerned. Objective: This study was to investigate the effects of demographic characteristics, intrinsic factors, and extrinsic factors on patients with healthcare-associated urinary tract infections in intensive care units. Research methods: This retrospective study was conducted to collect 121 patients with healthcare-associated urinary tract infections from 2012 to 2016, and 121 patients with the same gender in the control group who did not have healthcare-associated urinary tract infections in intensive care units. The age, sex and unit of intensive care units were control variables, which were matched in this study. Findings: The statistically significant risk factors for healthcare-associated urinary tract infections in the intensive care unit are: a history of the disease (OR =4.981; 95%CI=1.289～19.249), undergoing surgery (OR=4.515; 95%CI=1.387～14.695), coexisted infections (OR=6.015; 95%CI=2.233～16.198), and catheter placement (OR=74.298; 95%CI=1.482～3725.172). The protective factor was the hospitalized duration in the intensive care units (OR=0.904; 95% CI=0.858～0.953). Conclusions: Placing catheters with aseptic technique and performing daily bundle care of catheters are crucial preventive measures to improve the care quality and reduce the incidence of healthcare-associated urinary tract infection.

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Feng, Yu-Hsin, and 馮宥訢. "To examine relevant factors associated with catheter associated urinary tract infection in intensive care units using bundle care." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/743246.

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碩士
義守大學
護理學系
107
Purpose: The catheter-associated urinary tract infection (CAUTI) care bundle bis the standard procedure for catheter placement and the care procedure to control indwelling urinary catheterization infection. The purpose of this study was to examine the factors associated with catheter urinary tract infection after bundle care in the intensive care unit. 　　Methods: This study appplied secondary data to examine the factors associated with CAUTI. Data were from intensive care units of adult internal and surgery in a teaching hospital in southern Taiwan. The data of indwelling catheter used between January 1, 2017 and December 31, 2017, CAUTI were collected. Analytical methods include descriptive statistics, birariate analysis and logistic regression with a significant level of p < .05. 　　Results: The data included a total sample of 1120 records with a indwelling catheter used. A total of 330 records showed positive for urine culture. There were 627 males (56%) and 493 females (44%) with an average age of 69 years (standard deviation 15) of the sample. The average days of indwelling catheter used was 6.6 days (standard deviation 4.9). In the intensive care unit, 364 cases were successfully remove the catheter (32.5%) and 756 were not (67.5%). To analyze the risk factors for CAUTI, variables were: age, gender, catheter retention days, the size of indwelling catheter, the successful remove of the indwelling catheter or not, and diabetes, were significantly related to CAUTI. There was no significant relationship among APACHE Ⅱ score, bundle care technique, solution for daily care of urine catheter, and indwelling urinary CAUTI. 　　Conclusion: CAUTI is a common nosocomial infection, age, women, increasing the retention days of indwelling catheter, larger catheter diameter and diabetes are risk factors for CAUTI. This study results can be used in guiding clinical prevention effectively to decreasing the rate of CAUTI in clinical practices.

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Cooppan, Shivaan. "A once daily multi-unit system for the site-specific delivery of multiple drug regimens." Master's thesis, 2011. http://hdl.handle.net/10539/10584.

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Complex medication regimens have major implications on patient therapy. When we consider that these regimen therapies can also be further convoluted by co-morbidity, it is then seen as an essential opportunity to research possible solutions to alleviate such complications. Globally identified conditions such as the Human Immuno-deficiency Virus (HIV) and Tuberculosis (TB) are known to have such complications within their respective regimens. In many cases, the regimental therapies themselves are overbearing with high pill burdens having to be taken in segregated manners throughout the day. Within a standard TB regimen, isoniazid and rifampicin are seen to have a deleterious drug-drug interaction in which the bioavailability is compromised through formation of an insoluble complex. Despite this interaction, the 2 active drugs must be taken concurrently for successful TB therapy. No true solution exists as fixed dose combinations of isoniazid and rifampicin (Rifinah®) are still in production despite the detrimental interaction that impedes successful bioavailability. The once daily multi-unit drug delivery system (ODMUS) has the benefits of superseding the described problems and aiding in therapeutic outcomes. Preliminary studies utilized preliminary testing to ascertain the science surrounding the 2 components of the ODMUS, the memblet and the multiparticulate components. pH-sensitive polymers (Eudragit® L100-55 and E 100) were of critical importance to the success of the system and were individually manipulated for each component to produce a novel memblet and multiparticulate system through a unique salting out approach. Primary studies focused on drug release testing and drug entrapment for the multiparticulate component. Testing of the memblet system addressed dissolution and thermal analysis. Utilizing this data, a series of process variables were used to achieve an optimized formulation through a Box- Behnken statistical design. Optimized formulations used response testing to establish the optimal characteristics of both components. Multiparticulates achieved controlled release for 12 hours with an enhanced 71% drug entrapment efficiency. Memblet release profiles were confirmed over 2 hours with a maximal Tg of 56°C. Molecular modeling corroborated release understanding for both components. Surface area and porosity analysis, surface morphology, fourier transform infrared spectroscopy as well as thermal, rheological and mechanical analysis were additional tests undertaken on the optimized formulations. In vivo analysis was the final testing to verify validity of the ODMUS components and utilized a pig model for the investigation. UPLC blood analysis revealed increase blood levels of INH (CmaxINH= 0.0138ng/mL) and RIF (CmaxRIF= 0.052ng/mL) in relation to conventional dosage forms validating segregated site-specific release and increased bioavailability. Ideally, a segregated means of drug delivery throughout the gastrointestinal tract was achieved such that an enhanced bioavailability, a more controlled release and a simplified medication regimen was produced. This study aimed to achieve said goals through novel technique analysis, innovation and globally approved science to critically assess the success of the ODMUS as a potential means to reduce the complexities of medication regimen therapy.

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LING, CHENG-HUA, and 凌正華. "The Evaluation of Care Bundle at Catheter-Associated Urinary Tract Infections in Intensive Care Units of a District Hospital." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/dmutyt.

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碩士
中臺科技大學
醫療暨健康產業管理系碩士班
107
Purpose:This study mainly discussed the trend and risk factors of catheter- associate urinary tract infection among patients using urinary catheters in the intensive care units of a district hospital in Nantou County from 2015 to 2018. It also discussed the catheter-associate urinary tract infection rate in different "catheter associated care bundle" stages, which can then provide a safe medical environment and quality of care for patients.Methods:This is a longitudinal study which patients was placed catheters in the intensive care unit from May 2015 to December 2018 were collected by the sensory control room. A total of 2,132 cases were collected. Descriptive statistics, Chi-square test and multiple logistic regression analysis were used to identify whether demographic data, hospitalization data and catheter usage data of the cases were related to catheter-associate urinary tract infection. The trend of catheter-related urinary tract infection rate in different stages of implementing "catheter associated care bundle" was also analyzed.Results:Chi-square test and multiple logistic regression analysis showed that the longer hospitalization days and the more days in the intensive care unit, as well as the use of over size 18 catheters were significantly related to catheter-associated urinary tract infection in the intensive care units. After the implementation of "catheter associated care bundle", the average infection rate decreased from 3.17‰(SD=2.61) in the preparation period to 2.33‰(SD=0.35) and 2.43‰(SD=0.54) in the execution period and the autonomous period, respectively. The average and standard deviation of infection rate decreased showed a decreasing trend of infection rate and its variability. Conclusions: The results showed that the longer the hospitalization days, the longer days in the intensive care units, the longer indwelling days of the catheter, and the larger the catheter diameter, the higher the chance of catheter-associated urinary tract infection. Therefore, reducing the hospitalization days and the days in the intensive care unit, and using catheter with a smaller diameter can decrease the risk of catheter-associated urinary tract infection. Implementing "catheter associated care bundle" has a tendency of reducing urinary tract infection rate and its variability, which is helpful to decrease catheter-associated urinary tract infection in the intensive care units.

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Liu, Ting-Lun, and 劉定倫. "Design and Implementation of Visible-light Wearable Eye Tracker joint Inertial Measurement Unit for Head-motion Compensation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/70361016035270110101.

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碩士
國立中興大學
電機工程學系所
105
In recent years, the human-computer interaction has been widely implied in almost every way in our daily life. Especially the wearable devices toward more intuitive and more convenient. In this thesis, we develop a low-cost wearable eye tracker system that doesn’t need to fix the head after the user performs the calibration procedure. The proposed system also allows the head free and the correct gaze estimation simultaneously. In this thesis, the eye tracker includes the visible-light front-view webcam, which captures the eye image, and the outward webcam, which captures the scene image. We propose two different algorithms for the iris center localization. One is based on the ellipse fitting method, the other is based the image gradients for accurate and robust eye center localization. In the calibration procedure, we compare different conditions in the outdoor and indoor conditions, and the head-movement compensation scheme with the IMU’s data is used for the tracking processes. Besides, since the human eyes are stereo-sphere shape, the gaze points are difficult to be projected from the 3-dimensions space to the 2-dimensions image. In order to solve this situation, we try to utilize 9 calibration points to increase the gaze tracking accuracy. In our experiments by Algorithm 1: the experimental results show that in the outdoor condition, the offset of iris center is both within 4 pixels for horizontal and vertical coordinates. Then in the indoor case, the offset of iris center are both within 5.5 pixels for horizontal and vertical coordinates. By Algorithm 2 in the outdoor condition, its center offset of horizontal is 1 pixels, and the vertical offset is 5 pixels. Then in the indoor condition, its center offset of horizontal is 2.3 pixels, and the vertical offset is 7 pixels. Through the perspective function with the IMU compensation, by Algorithm 1 in the outdoor testing mode, the system achieves the horizontal accuracies of gaze tracking between 1.6 and 2.1 degrees, and the vertical accuracies of gaze tracking between 1.7 and 1.9 degrees respectively. In the indoor condition, the system achieves the horizontal accuracies of gaze tracking between 1.5 and 2.2 degrees, and the vertical accuracies of gaze tracking between 0.9 and 2.1 degrees respectively. By Algorithm 2 in the outdoor testing mode, the system achieves the horizontal accuracies of gaze tracking between 1.5 and 2.9 degrees, and the vertical accuracies of gaze tracking between 1.0 and 1.9 degrees respectively. In the indoor condition, the system achieves the horizontal accuracies of gaze tracking between 0.6 and 2.8 degrees, and the vertical accuracies of gaze tracking between 2.5 and 2.8 degrees respectively.

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Wei-Yao, Wang, and 王唯堯. "Surveillance and Management of Nosocomial Urinary Tract Infections by Serratia Marcescens in an Intensive Care Unit." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/08564896472720124915.

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碩士
中國醫藥學院
醫學研究所
91
SURVEILLANCE AND MANAGEMENT OF NOSOCOMIAL URINARY TRACT INFECTIONS BY SERRATIA MARCESCENS IN AN INTENSIVE CARE UNIT WY WANG1, SC KE2, PC LEE2. Division of Infectious Disease1 and Infection Control Committee2., Tung’s Taichung MetroHarbor Hospital, Taiwan Serratia marcescens has been reported to be one of the causative organisms of nosocomial infections and outbreaks. From the surveillance data, the incidence of nosocomial urinary tract infection (UTI) in our adult patients intensive care unit (APICU) is extremely higher than that in ward, especially in nosocomial UTI by S. marcescens. The APICU had been closed and had been cleaned and disinfected completely. The aim of this study is to identify whether a clone spreading of S. marcescens in APICU and to determine the effect of cleaning and disinfection of APICU in reducing the incidence of nosocomial UTI. During a 18-month study period (between April 2001 and September 2002), we analyzed the epidemiological data retrospectively and the bacteriological samples prospectively from patients with nosocomial UTI and environments with genotyping of strains by pulsed-field gel electrophoresis (PFGE). There were 605 and 146 episodes of nosocomial UTI recovered in the hospital and in APICU and 83 and 60 episodes caused by S. marcescens, respectively. The infection rates of nosocomial UTI in the hospital and in APICU and those of nosocomial S. marcescens UTI in the hospital and in APICU were 2.15, 16.26, 0.31, and 6.69 episodes/1,000 patient-days, respectively (p<0.01). The infection rates of nosocomial UTI and of nosocomial S. marcescens UTI were not changed significantly through cleaning and disinfecting the APICU (17.5 vs. 19.9 episodes/1,000 patient-days, p=0.53; 8.7 vs. 6.3 episodes/1,000 patient-days, p=0.38, respectively). Seventeen S. marcescens isolates from urine samples of patients and five isolates from environment in APICU were analyzed by PFGE, which 3 different clones of S. marcescens were identified. The infection rates of total and S. marcescenes UTI in APICU were significantly higher than those of hospital, which revealed significant urinary infection and S. marscescens infection occurring in APICU. The infection rates of nosocomial UTI in APICU were not changed despite closing wards and proper cleaning and disinfecion. The macrorestriction patterns of genomic DNA by PFGE revealed that there were clonal spreading of S. marscescens in patients and environments of APICU. Further delineation of the mode of transmission of nosocomial urinary tract infection is needed. Key words: Serratia marcescens, nosocomial infection, pulsed-field gel electrophoresis, adult patient intensive care unit.

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Lin, Yu-Chen, and 林煜真. "Relative Factors of Foley Care Mode In Intensive Care Unit and Healthcare-associated Urinary Tract Infection." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/09927036132939445715.

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碩士
臺北醫學大學
護理學研究所
99
The purpose of this research is to explore the relationships between the Foley care mode in intensive care units and healthcare-associated urinary tract infection in order to find a great improvement. This is in descriptive and correlation research design, taking six adult intensive care units in a Taipei medical center as an object. 180 Foley catheter possessed cases are collected by judgment sampling and longitudinal follow-up. The data were collected by patient information sheets and foley care information sheets from direct observation, healthcare records, inquiring on-duty healthcare nursing people and medical records. SPSS 17.0 is utilized for data analysis and statistical tests; p value set at 0.05. Descriptive statistics, Mann-Whitney U, Fisher''s exact test, Chi-square were employed to analyze this significant test of urinary tract infection which happen or not, and seek main danger factors to evaluates the corresponding risk. A multiple linear regression analysis is carried out to predict the values of a dependent variable. The results shown there were no statistically significant (p< .05) between Foley catheter possessory and healthcare-associated urinary infection. Whether the patient older than or equal to 70 years old? Whether the patient taking antibiotic or not? Whether the average void volume less than 2000ml per day? Whether the patient having diarrhea more than or equal to 2 days? Whether the employ haven''t disinfected hand before or after the shunts and drainage system? Whether the employ touched the container of the shunt system while falling? The risk factors of infection were list above, and the most predictable factor was "Whether the employ touched the container of the shunts and drainage system ", which represents 38%, next in sequence was "Whether the patient taking antibiotic or not?" and "Whether the patient having diarrhea more than or equal to 2 days?", which respectively represents 12% and 8%. These three factors had united predictive ability reached 57%. The results suggest the direction of clinical healthcare improvement, the index of the necessity of possessory of Foley catheter for the high-risk group, reducing the possibility of healthcare-associated urinary tract infection.

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Li, Ching Hsien, and 李靜嫻. "Impact of Presence of Waterborne Pathogens in Hospital Water Distribution System on the Occurrence of Nosocomial Respiratory Tract and Blood Stream Infections in Intensive Care Units." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/71991392452323103573.

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碩士
國立高雄師範大學
環境教育研究所
93
The purpose of this study is to determine the distribution of waterborne pathogens in a hospital water distribution system and its association with nosocomial respiratory tract and bloodstream infections. The waterborne pathogens investigated in this study included Pseudomonas aeruginosa, Stenotrophomonas maltophilia, and Acinetobacter baumannii. The study period was from 1st January 2003 through 31st December 2004. The study was conducted prospectively at a tertiary-care medical center with 1266 beds in Kaohsiung, Taiwan. The environmental surveillance for waterborne pathogens was performed by culturing water tap in the intensive care units (ICUs) periodically. The clinical surveillance of nosocomial respiratory tract and bloodstream infections caused by the waterborne pathogens was on patients who were admitted to ICUs and survived over 48 hours identified by infection control nurses according to our criteria. Three hundred and fifty-six tap swab samples were collected from 45 faucets in 2003, and 225 in 2004. During the same period, the positive rates of cultured sites for P. aeruginosa was 14.3% in 2003 and raised to 64.4% in 2004. The positive rates of cultured sites were between 2.2 and 15.6 % for S. maltophilia and 2.2 and 11.5% for A. baumannii. Genomic DNA typing between patient isolates and environmental isolates was performed by pulsed-field gel electrophoresis. Waterborne pathogens of same genotype could persist at the same faucets for a long period of time and could be found at different faucets of different ICUs at same time and caused nosocomial infections in patients.

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32

Hanna, Nawar. "Comparaison populationnelle des résultats périopératoires entre la néphro-urétérectomie ouverte et laparoscopique aux États-Unis." Thèse, 2015. http://hdl.handle.net/1866/16260.

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Introduction : La néphro-urétérectomie radicale (NUR) représente le traitement primaire pour les patients atteints d’une tumeur des voies excrétrices supérieures (TVES) non métastatique. Une approche ouverte ou laparoscopique peut être considérée. Malgré la présence de plusieurs études comparant les résultats périopératoires et oncologiques entre ces deux approches, aucunes études se basent sur une cohorte populationnelle. Objectif : Notre but est d’évaluer la morbidité péri-opératoire entre la NUR ouverte et laparoscopique en utilisant une cohorte populationnelle. Méthode : Nous avons utilisé la base de donnée Nationwide Inpatient Sample (NIS) pour identifier tous les patients atteints d’une TVES non métastatique, traités par NUR ouverte ou laparoscopique, entre 1998 et 2009. Au total, 7401 (90,8%) et 754 (9,2%) patients ont subi une NUR ouverte et laparoscopique, respectivement. Dans le but de contrôler les différences inhérentes entre les deux groupes, nous avons utilisé une analyse par appariement sur les scores de propension. Ainsi, 3016 (80%) patients avec NUR ouverte étaient appariés à 754 (20%) patients avec NUR laparoscopique. Intervention : Tous les patients ont subi une NUR. Mesures : Les taux de complications intra-opératoires et post-opératoires, de transfusions sanguines, d’hospitalisation prolongée et de mortalité intrahospitalière ont été mesurés. Des analyses de régression logistique on été utilisées pour notre cohorte, après appariement sur les scores de propension. Résultats et Limitations : Pour les patients traités par approche ouverte vs. laparoscopique, les taux suivants furent calculés : transfusions sanguines : 15 vs. 10% (p<0,001); complications intra-opératoires : 4,7 vs. 2,1% (p=0,002); complications post-opératoires : 17 vs. 15% (p=0,24); durée d’hospitalisation prolongée (≥ 5 jours) : 47 vs. 28% (p<0,001); mortalité intra-hospitalière 1,3 vs. 0,7% (p=0,12). Sur les analyses par régression logistique, les patients ayant été traités par NUR laparoscopique avaient moins de chance de recevoir une transfusion sanguine (odds ratio [OR]: 0,6, p<0,001), de subir une complication intra-opératoire (OR: 0,4, p=0,002), et d’avoir une durée prolongée d’hospitalisation (OR: 0,4, p<0,001). Globalement les taux de complications postopératoires étaient équivalents. Toutefois, l’approche laparoscopique était associée à moins de complications pulmonaires (OR: 0,4, p=0,007). Cette étude est limitée par sa nature rétrospective. Conclusion: Après ajustement de potentiels biais de sélection, la NUR par approche laparoscopique est associée à moins de complications intraopératoires et péri-opératoires comparée à la NUR par approche ouverte.
Background: Nephroureterectomy represents the primary management for patients with non-metastatic upper tract urothelial carcinoma (UTUC). Either an open (ONU) or laparoscopic (LNU) nephroureterectomy may be considered. Despite the presence of several reports comparing perioperative and cancer control outcomes between the two approaches, no reports relied on a population-based cohort. Objectives: To examine intraoperative and postoperative morbidity of ONU and LNU in a population-based cohort. Design, setting, and participants: We relied on the Nationwide Inpatient Sample (NIS) to identify patients with non-metastatic UTUC treated with ONU or LNU between years 1998 and 2009. Overall, 7401 (90.8%) and 754 (9.2%) patients underwent ONU and LNU, respectively. To adjust for potential baseline differences between the two groups, propensity-based matching was performed. This resulted in 3016 (80%) ONU patients matched to 754 (20%) LNU patients. Intervention: All patients underwent NU. Measurements: The rates of intraoperative and postoperative complications, blood transfusions, prolonged length of stay (pLOS), and in-hospital mortality were assessed for both procedures. Multivariable logistic regression analyses were performed within the post propensity-matched cohort. Results and limitations: For ONU vs. LNU respectively, the following rates were recorded: blood transfusions: 15 vs. 10% (P<0.001); intraoperative complications: 4.7 vs. 2.1% (P=0.002); postoperative complications: 17 vs. 15% (P=0.24); pLOS (≥5 days): 47 vs. 28% (P<0.001); in-hospital mortality: 1.3 vs. 0.7% (P=0.12). In multivariable logistic regression analyses, LNU patients were less likely to receive a blood transfusion (odds ratio [OR]: 0.6, P<0.001), to experience any intraoperative complications (OR: 0.4, P=0.002), and to have a pLOS (OR: 0.4, P<0.001). Overall postoperative complications were equivalent. However, LNU patients had fewer respiratory complications (OR: 0.4, P=0.007). This study is limited by its retrospective nature. Conclusions: After adjustment for potential selection biases, LNU is associated with fewer adverse intraoperative and perioperative outcomes than ONU.

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Machová, Gabriela. "Bytové spoluvlastnictví - správa společných částí domu a pozemku." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-271596.

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The Diploma thesis focuses on the current legislation of residential co-ownership, especially of administration of a building and tract of land. Its content is divided into two parts. The aim of the first part of the thesis is to present fundamental interpretation of an institute of residential co-ownership which is one of the types of co-ownership with a large number of specifics. The thesis includes also an outline of its historical development, an analysis of conceptual theories of residential co-ownership and explanation of essential terms of the institute. As one of the most important terms is considered the term unit. For correct understanding the thesis explains also other terms which the legislation of the unit expressly operates with. The relevant examples are the terms flat, commercial premises, building and tract of land and share of a building and tract of land. The first part of the thesis serves to obtain fundamental information about an institution of residential co-ownership and its essential elements that will be used during a deeper research in the second part. The second part of the thesis deals with comprehensive legislation analysis of administration of a building and tract of land. The constituent chapters include a definition of administration of a building and tract of land,...

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Лижнюк, Микола Русланович, and Mukola Lyznuk. "Обґрунтування параметрів висіваючого апарата селекційної сівалки." Master's thesis, 2020. http://elartu.tntu.edu.ua/handle/lib/33344.

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У дипломній роботі обґрунтовано конструкцію висіваючого апарату сівалки для механізації пociву кукурудзи на селекційних ділянках первинного насінництва та конкурсного сортовипробування. Серійні просапні сівалки на селекційних ділянках застосовувати недоцільно, оскільки вони не відповідають вимогам селекції – чистота закладання експерименту і процес дослідження. Висівний апарат розроблено базуючись на: аналізі способів посіву; вивченні літературних джерел, патентів та авторських свідоцтв; агротехнічних вимогах до селекційної сівалки. Невелика потреба у селекційних сівалках (кілька десятків штук), нетехнологічність у виготовленні, складність та великі витрати стримують конструювання таких машин. Висіваючий апарат для селекційної сівалки монтують з основних складальних одиниць сівалки універсальної пневматичної СУПН-6. Висіваючий апарат забезпечує: наочність процесу попереднього розподілу насіння у рядках; очищення апарата від невисіяного насіння; простоту заправки висіваючих апаратів посівним матеріалом. Для розробленої конструктивної схеми сівалки селекційної порційного висіву розраховані основні параметри і режими роботи конусного порційного дозатора висіваючого апарата; обґрунтовано основні експлуатаційні показники посівного агрегата; виконано інженерно-технічне обґрунтування вибору трактора (клас 1,4) для агрегатування із сівалкою селекційною; виконано розрахунок посівного агрегату. У роботі також проаналізовані сучасні напрямки вдосконалення сівалок; вимоги до якості пунктирної сівби; обґрунтовано вибір конструкції висівного апарата та сошників; обґрунтовано конструктивне рішення сівалки для селекційного посіву та підвіски посівної секції сівалки ССПВ-6.
In thesis work substantiates the design of the seeding unit of the drill for mechanization of corn sowing in the selection areas of primary seed production and competitive variety testing. Serial prosapni seeders on the selection areas should not be used because they do not meet the requirements of selection - the purity of the experiment and the research process. The seeding unit is developed based on: the analysis of methods of sowing; study of literary sources, patents and copyright certificates; of the agrotechnical requirements to the selection seeder. The small need of the selection seeders (several dozen pieces), non-technological of manufacturing, complexity and large costs constrain the designing of such machines. The sowing device for a selection seeder is mounted from the main assembly units of a seeder of universal pneumatic SUPN-6. The sowing device provides: clarity of process of preliminary distribution of seeds in row; cleaning of the device from unsown seeds; simplicity of filling of sowing devices with sowing material. For the developed constructive scheme of a selection seeder of portion sowing the basic parameters and operating modes of the conical portion batcher of the sowing apparatus are calculated; the main operational indicators of the sowing unit are substantiated; performed engineering and technical substantiation of the choice of tractor (class 1,4) for aggregation with selection seeder; calculation of the sowing unit are performed. In the work also analyzed modern areas of improvement of seeders; requirements for the quality of dotted sowing; the choice of the design of the sowing apparatus and coulters are substantiated; the constructive decision of the seeder for selection sowing and pendants of the sowing section of the SSPV-6 seeder are substantiated.

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Nformi, Emmanuel Nfor. "Sequence stratigraphic characterisation of petroleum reservoirs in Block 11b/12b of the Southern Outeniqua Basin." Thesis, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_3647_1365671037.

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The main purpose of this study was to identify and characterize the various sand prone depositional facies in the deepwater Southern Outeniqua Basin which generally tend to form during
lowstand (marine regression) conditions producing progradational facies. It made use of sequence stratigraphy and turbidite facies models to predict the probable location of deepwater
reservoirs in the undrilled Southern Outeniqua Basin using data from basin margin Pletmos Basin and the deepwater Southern Outeniqua Basin. Basin margin depositional packages were
correlated in time and space with deepwater packages. It was an attempt at bridging the gap between process-related studies of sedimentary rocks and the more traditional economic geology
f commercial deposits of petroleum using prevailing state-of-the-art in basin analysis. It enabled the most realistic reconstructions of genetic stratigraphy and offered the greatest
application in exploration. Sequence stratigraphic analysis and interpretation of seismics, well logs, cores and biostratigraphic data was carried out providing a chronostratigraphic framework of the study area within which seismic facies analysis done. Nine (9) seismic lines that span the shallow/basin margin Pletmos basin into the undrilled deepwater Southern Outeniqua basin were analysed and interpreted and the relevant seismic geometries were captured. Four (4) turbidite depositional elements were identified from the seismic lines: channel, overbank deposits,
haotic deposits and basin plain (basin floor fan) deposits. These were identified from the relevant seismic geometries (geometric attributes) observed on the 2D seismic lines. Thinning attributes, unconformity attributes and seismic facies attributes were observed from the seismic lines. This was preceded by basic structural analyses and interpretation of the
seismic lines. according to the structural analysis and interpretation, deposition trended NW-SE and NNW-SSE as we go deepwater into the Southern Outeniqua basin. Well logs from six (6)
of the interpreted wells indicated depositional channel fill as well as basin floor fans. This was identified in well Ga-V1 and Ga-S1 respectively. A bell and crescent shape gamma ray log
signature was observed in well Ga-V1 indicating a fining up sequence as the channel was abandoned while an isolated massive mound-shape gamma ray log signature was observed in
Ga-S1 indicating basin plain well-sorted sands. Core analyses and interpretation from two southern-most wells revealed three (3) facies which were derived based on Walker&lsquo
s 1978, turbidite
facies. The observed facies were: sandstone, sand/shale and shale facies. Sequence stratigraphic characterisation of petroleum reservoirs in block 11b/12b of the Southern Outeniqua
Basin. Cores of well Ga-V1 displayed fine-grained alternations of thin sandstone beds and shales belonging to the thin-bedded turbidite facies. This is typical of levees of the upper fan channel but
could easily be confused with similar facies on the basin plain. According to Walker, 1978 such facies form under conditions of active fan progradation. Ga-S1 cores displayed not only classic
turbidite facies where there was alternating sand and shale sections but showed thick uninterrupted sections of clean sands. This is typical of basin plain deposits. Only one well had
biostratigraphic data though being very limited in content. This data revealed particular depth sections and stratigraphic sections as having medium to fast depositional rates. Such rates are
characteristic of turbidite deposition from turbidity currents. This study as well as a complementary study by Carvajal et al., 2009 revealed that the Southern Outeniqua basin is a sand-prone
basin with many progradational sequences in which tectonics and sediment supply rate have been significant factors (amongst others such as sea level change) in the formation of these
deepwater sequences. In conclusion, the Southern Outeniqua basin was hereby seen as having a viable and unexplored petroleum system existing in this sand prone untested world class.

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Gillis, Robert Francis Fraser. "Finding genetic elements that head to the autistic phenotype." Thèse, 2007. http://hdl.handle.net/1866/7622.

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Dissertations / Theses on the topic 'Tractor units'

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