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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Untersuchungen über etwaige regelmässige änderungen von höhenunterschieden und über zufällige und systematische nivellementsfehler, angestellt an periodischen feineinwägungen, die im jahre 1905 von der geodäschen abteilung der Kgl. Landwirtschaftlichen hochschule zu Berlin in Halensee ausgeführt wurden ...

Schulz, J. Wilhelm G., January 1900 (has links)
Inaug.-diss.--Berlin. / Lebenslauf.
2

Untersuchungen über etwaige regelmässige änderungen von höhenunterschieden und über zufällige und systematische nivellementsfehler, angestellt an periodischen feineinwägungen, die im jahre 1905 von der geodäschen abteilung der Kgl. Landwirtschaftlichen hochschule zu Berlin in Halensee ausgeführt wurden ...

Schulz, J. Wilhelm G., January 1900 (has links)
Inaug.-diss.--Berlin. / Lebenslauf.
3

Geoid undulation from GPS heighting /

Dung Nguyen. Unknown Date (has links)
Thesis (MAppSc)--University of South Australia, 1998
4

Las operaciones del ingeniero en los desiertos montañosos hidromensura de los rios "Pasion" y "Chixory"--estado de Tabasco ...

Alcalá, Maximino. January 3795 (has links)
Tesis--Escuela Nacional de Ingenieros, Mexico.
5

Laser Leveling and Farm Profits

Daubert, John, Ayer, Harry 06 1900 (has links)
No description available.
6

Estudo e implementação de sistema Pull Leveling em fábrica de montagem

Alves, Pedro Miguel de Rezende Pinto dos Santos January 2009 (has links)
Tese de mestrado integrado. Engenharia Electrotécnica e de Computadores (Major Automação). Faculdade de Engenharia. Universidade do Porto. 2009
7

Nivelamento trigonométrico e nivelamento geométrico classe IIN da NBR 13.133 : limites e condições de compatibilidade / Trigonometrical leveling and leveling class IIN of NBR 13.133 : compatibility limits and conditions

Antonio Sérgio Bento Moreira 31 July 2003 (has links)
O nivelamento trigonométrico com estação total é uma técnica que tem sua aplicação revigorada em situações que até pouco tempo atrás, por razões de precisão, somente podiam ser atendidas com uso de nivelamento geométrico. A NBR 13.133 inclui este tipo de nivelamento em uma única classe e estabelece tolerâncias muito altas, e por essa razão limita a sua especificação por empresas contratantes. Neste trabalho, avaliou-se a precisão do nivelamento trigonométrico usando estações totais de baixa e média precisão, comparando as diferenças de níveis obtidos por nivelamento geométrico. Na avaliação foram consideradas as influências de alguns fatores na propagação dos erros: a obtenção da altura do instrumento, os efeitos atmosférico, o posicionamento e altura dos alvos, a precisão dos equipamentos e as distâncias de visadas. Os resultados possibilitaram definir as distâncias máximas de visada nas condições avaliadas, em que alcança a tolerância do nivelamento geométrico IIN / The trigonometrical leveling with total station is a technique that has been increased in situations in that even some time, for reasons of precision, the use of the leveling was demanded. The NBR 13.133 includes this trigonometrical leveling in a single class and it establishes very high tolerances, and for that reason it limits its specification for contracting companies. The precision of the trigonometrical leveling was evaluated using total stations of low and intermediate precision, comparing the differences of levels obtained by leveling. In the evaluation the influences of some factors were considered in the propagation of the errors: the instrument height determination, the atmospheric effects, the positioning and staff height determination, the precision of the equipments and the distances of staff. The results made possible to define the sight maximum distances in the evaluated conditions, in that it reaches the IIN tolerance leveling
8

Nivelamento trigonométrico e nivelamento geométrico classe IIN da NBR 13.133 : limites e condições de compatibilidade / Trigonometrical leveling and leveling class IIN of NBR 13.133 : compatibility limits and conditions

Moreira, Antonio Sérgio Bento 31 July 2003 (has links)
O nivelamento trigonométrico com estação total é uma técnica que tem sua aplicação revigorada em situações que até pouco tempo atrás, por razões de precisão, somente podiam ser atendidas com uso de nivelamento geométrico. A NBR 13.133 inclui este tipo de nivelamento em uma única classe e estabelece tolerâncias muito altas, e por essa razão limita a sua especificação por empresas contratantes. Neste trabalho, avaliou-se a precisão do nivelamento trigonométrico usando estações totais de baixa e média precisão, comparando as diferenças de níveis obtidos por nivelamento geométrico. Na avaliação foram consideradas as influências de alguns fatores na propagação dos erros: a obtenção da altura do instrumento, os efeitos atmosférico, o posicionamento e altura dos alvos, a precisão dos equipamentos e as distâncias de visadas. Os resultados possibilitaram definir as distâncias máximas de visada nas condições avaliadas, em que alcança a tolerância do nivelamento geométrico IIN / The trigonometrical leveling with total station is a technique that has been increased in situations in that even some time, for reasons of precision, the use of the leveling was demanded. The NBR 13.133 includes this trigonometrical leveling in a single class and it establishes very high tolerances, and for that reason it limits its specification for contracting companies. The precision of the trigonometrical leveling was evaluated using total stations of low and intermediate precision, comparing the differences of levels obtained by leveling. In the evaluation the influences of some factors were considered in the propagation of the errors: the instrument height determination, the atmospheric effects, the positioning and staff height determination, the precision of the equipments and the distances of staff. The results made possible to define the sight maximum distances in the evaluated conditions, in that it reaches the IIN tolerance leveling
9

Optimization of Batch Sizes : A simulation based study on how equally sized batches affect production planning

Hjertqvist, Elin, Malin, Östman January 2017 (has links)
Volvo Trucks is one of the world’s largest truck manufacturers, with a cab production plant located in Umeå, Sweden. The variation in batch sizes of the different components causes variation in the length of the production plan of subparts, and thus variation in production lead times. This project aims to examine how equally sized batches affect the length of the production plan, and what batch size is optimal to achieve efficient production planning. The examination was conducted with respect to lean principles and a mathematical model was built to simulate the use of different batch sizes. In order to run the simulation, both historical and new data was used. Parameters interesting to examine for the result are the length and variation of the production plan, number of set-ups, production frequency, inventory levels and the annual production. A batch size of 2.0 hours is optimal as the length of the production plan then varies the least in the allowed interval. Equally sized batches exclusively were not found to contribute to a more efficient production planning. Smaller batch sizes in combination with equally sized batches were however shown to decrease the variation in the production plan, and to result in increased stock turnover and decreased inventory levels. / Volvo Lastvagnar är en av världens största lastbilstillverkare, med en fabrik för tillverkning av hytter placerad i Umeå. Variationen i orderstorlekar för olika komponenter orsakar variation i längden av produktionsplanen, vilket i sin tur leder till varierade ledtider. Detta projekt syftar till att undersöka hur utjämnade orderstorlekar påverkar längden av produktionsplanen och vilken orderstorlek som är optimal för en effektiv produktionsplanering. Projektet utfördes med hjälp av leanprinciper och en matematisk modell av produktionen byggdes för att simulera användningen av olika orderstorlekar. För att köra simuleringen användes både historiskt och nytt data. Intressanta parametrar för resultatet är längden och variationen i produktionsplan, antal verktygsbyten, produktionsfrekvens, lagernivåer och årlig produktion. En orderstorlek på 2,0 timmar är optimal eftersom längden på produktionsplanen då har minst variation inom det tillåtna intervallet. Enbart jämna orderstorlekar visade sig inte bidra till en effektivare produktionsplanering, men mindre orderstorlekar i kombination med jämna orderstorlekar visade sig minska variationen i produktionsplan och resulterade i ökad lageromsättning samt minskade lagernivåer.
10

Interday and intraday stance analysis variability in dogs with hindlimb lameness and comparison of the effect of dog, surgeon, and TPLO surgical procedure variables on improvement of eight-week post-operative static weight-bearing.

Wilson, Megan L. January 1900 (has links)
Master of Science in Biomedical Sciences / Department of Clinical Sciences / James K. Roush / Interday and intraday stance analysis variability in dogs with hindlimb lameness Objective: The purpose of this study was to assess the same day and next-day repeatability of data collected with a Pet Safe Stance Analyzer on animals with naturally-occurring lameness presented for veterinary orthopedic examination. Our hypothesis was that dogs would show consistent repeatability with regards to body weight distribution on the Pet Safe Stance analyzer. Materials and Methods: Interday Variability Trial: Thirty-one consecutive dogs presenting for hindlimb lameness were included. The PetSafe Stance Analyzer was used with the dog standing in their natural standing position with each foot placed in its respective quadrant on the Stance Analyzer. A minimum of 5 valid measurements were collected and averaged to find the mean distribution of weight on each limb. This process was repeated the following day with the same handler and recorder. Intraday Variability Trial: Fifteen consecutive dogs were placed on the Pet Safe Stance analyzer and measurements were collected for each of 5 trials identical to the interday group. Four additional assessment trials followed with reintroduction of the animal to the room at each assessment. Results: Interday Variability Trial: There were no significant differences between Day 1 and Day 2 measured variables except for a significant increase in the Forelimb Symmetry index on Day 2 compared to Day 1. Lin’s Correlation Coefficients % body weight measured on Day 1 compared to Day 2 were significantly correlated on the lame hindlimb (0.524) and contralateral hindlimb (0.733). Intraday Variability Trial: There were no significant differences across trials for measured variables of % weight on the lame hindlimb, contralateral hindlimb, ipsilateral forelimb, or contralateral forelimb. Lin’s Correlation coefficients showed strong correlation between trials for the lame hindlimb (0.682), contralateral hindlimb (0.817), body weight (0.863), and hindlimb symmetry index (0.726). Clinical Significance: A commercial stance analyzer is a repeatable method of measurement of weight-bearing on lame hindlimbs of dogs between days and in repeated trials over one day. Day-to-day forelimb weight-bearing in dogs who are lame on a hindlimb is more variable, likely because of trial to trial changes in weight redistribution from lameness. Comparison of the effect of dog, surgeon, and TPLO surgical procedure variables on improvement of eight-week post-operative static weight-bearing Objective: To compare the effect of surgeon and tibial plateau leveling osteotomy (TPLO) procedure variations on the outcome of TPLO in naturally-occurring cranial cruciate-deficient stifles. Materials and methods: Records from 142 dogs receiving a TPLO were reviewed for information regarding surgical procedure, status of meniscus at the time of surgery, surgeon identity, ACVS diplomate or resident, meniscal release, progression of healing at the progress evaluation based on radiographic interpretation, and complications encountered. The primary outcome measure was static force on the operated limb at recheck on a PetSafe Stance Analyzer ͣ. Results: Recheck tibial plateau angle (TPA) was negatively and significantly correlated with improvement (r=-0.2132, p=0.013). Post-operative, and Recheck TPA’s were all significantly correlated with one another. The amount of TPA change from initial to immediate post-operative values was significantly correlated with the Initial TPA (r=0.628, p<0.001). Surgeon, surgical experience, arthrotomy, meniscal damage, meniscal intervention, complications, post-operative TPA, and initial TPA had no significant effect on weight-bearing at recheck. Clinical Significance: TPLO’s show improvement of 4.58% BW on the operated limb at 6-12 week rechecks on a stance analyzer. Surgeon, surgical experience, arthrotomy, meniscal damage, meniscal intervention, complications, post-operative TPA, and initial TPA have no effect on surgical outcome.

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