Дисертації з теми "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.
Повний текст джерелаThe 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.
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.
Повний текст джерелаThe 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.
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.
Повний текст джерелаSewell, 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.
Повний текст джерелаSemmler, 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.
Повний текст джерелаKozhushko, 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.
Повний текст джерелаMehta, Vikas Chandra. "PERFORMANCE OF PAN-TILT TRACKER BASED ON THE PIN-HOLE LENS MODEL." UKnowledge, 2009. http://uknowledge.uky.edu/gradschool_theses/596.
Повний текст джерелаМітцель, 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.
Повний текст джерелаThe 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.
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.
Повний текст джерелаThe 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.
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.
Повний текст джерелаDigital 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
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.
Повний текст джерелаHutton, 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.
Повний текст джерелаОмельяненко, Ольга Владимировна, та 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.
Повний текст джерелаA 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.
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.
Повний текст джерелаThe 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.
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.
Повний текст джерелаThe 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
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.
Повний текст джерелаThe 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.
Михеев, А. Ю., та 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.
Повний текст джерелаЦелью 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.
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.
Повний текст джерелаAfrathim, 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.
Повний текст джерела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.
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.
Повний текст джерела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.
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.
Повний текст джерела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.
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.
Повний текст джерела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.
ROUČKA, František. "Využití traktorů s pásovým podvozkem v podniku zemědělské prvovýroby." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-376045.
Повний текст джерелаShen, 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.
Повний текст джерела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.
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.
Повний текст джерела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.
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.
Повний текст джерелаLING, 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.
Повний текст джерела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.
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.
Повний текст джерела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.
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.
Повний текст джерела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.
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.
Повний текст джерела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.
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.
Повний текст джерела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.
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.
Повний текст джерелаBackground: 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.
Machová, Gabriela. "Bytové spoluvlastnictví - správa společných částí domu a pozemku." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-271596.
Повний текст джерелаЛижнюк, Микола Русланович, та Mukola Lyznuk. "Обґрунтування параметрів висіваючого апарата селекційної сівалки". Master's thesis, 2020. http://elartu.tntu.edu.ua/handle/lib/33344.
Повний текст джерелаIn 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.
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.
Повний текст джерелаThe 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.
Gillis, Robert Francis Fraser. "Finding genetic elements that head to the autistic phenotype." Thèse, 2007. http://hdl.handle.net/1866/7622.
Повний текст джерела