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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.
351

Návrh zařízení pro měření výškové polohy těžiště automobilu / Design of Device for Vehicle Center of Gravity Height Measurement

Rektořík, Jiří January 2017 (has links)
The objective of this diploma thesis is the design of a device that measures the vehicle’s centre of gravity height position. The first part defines individual methods of measurement using various measuring equipment. The next part deals with the definition of requirements for the device and the definition of the design. A stress-strain analysis was executed for selected components. This diploma thesis describes the preparation process of the vehicle and the device for the measurement. The next part is dedicated to the design of the measuring chain and to the evaluation of the results. The thesis concludes with a theoretic analysis of the measurement inaccuracy.
352

Vliv prostorového omezení na vlastnosti metamagnetických nanostruktur / Spatial confinement effects in metamagnetic nanostructures

Jaskowiec, Jiří January 2019 (has links)
Silné prostorové omezení materiálů způsobuje jejich nové vlastnosti, které mohou najit uplatnění v mnoha vědeckých i technických odvětvích. Snaha zmenšit velikosti součástek, zvětšit hustotu zápisu a zefektivnit procesy je současným trendem elektronického průmyslu. V této práci je studován vliv prostorového omezení na vlastnosti metamagnetického železo-rhodia (FeRh) během fázové přeměny. FeRh je materiál vykazující fázovou přeměnu prvního druhu mezi antiferomagnetickou a feromagnetickou fází. Metodou mikroskopie magnetických sil v magnetickém poli kolmém na rovinu vzorku je zobrazeni a analyzována struktura fázových domén behem fázové přeměny. Kvantitativní analýza naměřených dat je provedena užitím výškové korelační funkce a její výsledky jsou porovnány pro různé velikosti struktur a tloušťky tenkých vrstev.
353

Měření výšky postavy v obraze / Height Measurement in Digital Image

Olejár, Adam January 2015 (has links)
The aim of this paper is a summary of the theory necessary for a modification, detection of person and the height calculation of the detected person in the image. These information were then used for implementation of the algoritm. The first half reveals teoretical problems and solutions. Shows the basic methods of image preprocessing and discusses the basic concepts of plane and projective geometry and transformations. Then describes the distortion, that brings into the picture imperfections of optical systems of cameras and the possibilities of removing them. Explains HOG algorithm and the actual method of calculating height of person detected in the image. The second half describes algoritm structure and statistical evaluation.
354

Early Height Growth in Douglas Fir

Ferguson, C. W., Jr. 01 1900 (has links)
No description available.
355

Unbiased Estimation for the Contextual Effect of Duration of Adolescent Height Growth on Adulthood Obesity and Health Outcomes via Hierarchical Linear and Nonlinear Models

Carrico, Robert 22 May 2012 (has links)
This dissertation has multiple aims in studying hierarchical linear models in biomedical data analysis. In Chapter 1, the novel idea of studying the durations of adolescent growth spurts as a predictor of adulthood obesity is defined, established, and illustrated. The concept of contextual effects modeling is introduced in this first section as we study secular trend of adulthood obesity and how this trend is mitigated by the durations of individual adolescent growth spurts and the secular average length of adolescent growth spurts. It is found that individuals with longer periods of fast height growth in adolescence are more prone to having favorable BMI profiles in adulthood. In Chapter 2 we study the estimation of contextual effects in a hierarchical generalized linear model (HGLM). We simulate data and study the effects using the higher level group sample mean as the estimate for the true mean versus using an Empirical Bayes (EB) approach (Shin and Raudenbush 2010). We study this comparison for logistic, probit, log-linear, ordinal and nominal regression models. We find that in general the EB estimate lends a parameter estimate much closer to the true value, except for cases with very small variability in the upper level, where it is a more complicated situation and there is likely no need for contextual effects analysis. In Chapter 3 the HGLM studies are made clearer with large-scale simulations. These large scale simulations are shown for logistic regression and probit regression models for binary outcome data. With repetition we are able to establish coverage percentages of the confidence intervals of the true contextual effect. Coverage percentages show the percentage of simulations that have confidence intervals containing the true parameter values. Results confirm observations from the preliminary simulations in the previous section of this paper, and an accompanying example of adulthood hypertension shows how these results can be used in an application.
356

Trendy v tělesné výšce vrcholových sportovních gymnastek ve srovnání tří po sobě jdoucích generacích / Trends in human height of elite female artistic gymnasts in comparision with three consecutive generations.

Pospíšilová, Anežka January 2015 (has links)
There is no common opinion, if the final height of female artistic gymnasts is jeopardized due to excessive training from early childhood. The aim of this master thesis is to compare a trend in human height of artistic gymnasts in three consecutive generations. Auxologic and related information were obtained from 49 elite artistic gymnasts via questionnaire. All were the members of national team. We figured out that artistic gymnasts are statistically smaller than their same-age peers. However, all of them have reached their genetically determined growth potential. The final height of artistic gymnasts across generations was increasing as well as the average female population. According to growth charts, constitutional delay is typical for artistic gymnasts. The age of menarche was statistically higher in the two youngest generations in comparison with the average age of their peers. According to our results, artistic gymnasts are not smaller due to excessive training from childhood, but on the grounds of genetic predisposition for small stature, which is favorable for this sport. Powered by TCPDF (www.tcpdf.org)
357

Vzájemné vztahy mezi výškovými, skokanskými a rychlostně-obratnostními parametry u starších žákyň volejbalu / Relations between high, jumping and speed-dexterity parameters in older students' volleyball

Valtová, Alžběta January 2012 (has links)
Title: Relations between high, jumping and speed-dexterity parameters in older students' volleyball Objectives: The aim of this work is to identify and evaluate the relationships between high, jumping and speed-dexterity parameters in older students' volleyball in the years 2008 to 2012. Methods: For the processing and evaluation of data retrieved from the results of standardized tests for volleyball in individual years and generally used method of comparison (comparison) data were also used basic statistical methods (arithmetic mean, standard deviation, maximum, minimum, range of variation, T-sections, McCall criterion). The evaluation was performed by means of graphs and verbal assessment. Results: In the selection of the 20 highest players in each year from 2008 to 2012 could not be confirmed that the majority did not reach above the average of the absolute values after smash jump start, but it was confirmed that the majority did not reach above-average values when measuring speed-dexterity test, known as K-test measured against a whole group of players in a given year. Furthermore, according to the processed data confirmed that most of the selection of 20 of the K-test the best players in each year from 2008 to 2012 will achieve above-average values of the absolute jump start after smash...
358

Vliv kojení na tělesný růst předškolních dětí / Effect of breastfeeding on the growth of preschool children

Belušová, Zuzana January 2013 (has links)
Growth, that is a sensitive indicator of children's health, should be evaluated in relation to suitable reference data. Under the term "physiological growth of chidren" is understood growth of long-term breast-fed infants that is - in the first months of their life - different from the growth of infants, who were not breast fed. This Thesis is focused on evaluation of impacts the long-term breast-feeding has on the growth of children in their pre-school age and on the differences in comparison with the children, who were breast- fed only minimally or not at all. Data used for this Thesis elaboration were obtained from a questionnaire and by measuring the essential physical proportions of children in different nursery and primary schools in Prague. Thereafter; by analysing the received data, we have come to the conclusion that long-term breast-feeding does not have any significant impact onto stature, weight nor head circumference of pre-school children. Some differences were detected concerning the BMI values and thickness of skin folds; however, the results were out of accord with our expectations that the long-term breast-fed children will have lower BMI values than the children, who were breast-fed just minimally. Comparing the Z-score of the long-term breast-fed children with regard to the data from the...
359

Coarctation of the aorta : register and imaging studies

Rinnström, Daniel January 2016 (has links)
Background Coarctation of the aorta (CoA) constitutes 5-8 % of all congenital heart disease (CHD) and is associated with long-term complications such as hypertension (HTN) and left ventricular hypertrophy (LVH). Factors associated with HTN, LVH, and diffuse myocardial fibrosis, are not yet fully explored in this population. Methods Papers I-III: The Swedish national register of congenital heart disease (SWEDCON) was used to identify adult patients with repaired CoA. Paper IV: Data on 2,424 adult patients with CHD was extracted from SWEDCON and compared to controls (n = 4,605) regarding height, weight and body mass index (BMI). Paper V: Adults with CoA (n = 21, age 28.5 (19.1-65.1) years, 33.3 % female) referred for CMR were investigated with T1 mapping to determine left ventricular extracellular volume fraction (ECV). Results Papers I-II: Out of 653 patients, 344 (52.7 %) had HTN. In a multivariable model, age (years) (OR 1.07, CI 1.05-1.10), sex (male) (OR 3.35, CI 1.98-5.68) and BMI (kg/m2) (OR 1.09, CI 1.03-1.16) were associated with having HTN, and so was systolic arm-leg blood pressure (BP) gradient where an association was found at the ranges (10, 20] mmHg (OR 3.58, CI 1.70-7.55) and > 20 mmHg (OR 11.38, CI 4.03-32.11), in comparison to the range [0, 10] mmHg. When investigating 243 patients with diagnosed HTN, 127 (52.3 %) had elevated BP (≥ 140/90 mmHg). Age (years) (OR 1.03, CI 1.01-1.06) was associated with elevated BP, and so was systolic arm-leg BP gradient in the ranges (10, 20] mmHg (OR 4.92, CI 1.76-13.79), and > 20 mmHg (OR 9.93, CI 2.99-33.02), in comparison to the reference interval [0, 10] mmHg. Patients with elevated BP had more classes of anti-hypertensive medication classes prescribed (1.9 vs 1.5, p = 0.003). Paper III: Out of 506 patients, 114 (22.5 %) were found to have LVH. Systolic BP (mmHg) (OR 1.02, CI 1.01-1.04), aortic valve disease, (OR 2.17, CI 1.33–3.53), age (years) (OR 1.03, CI 1.01–1.05), and HTN (OR 3.02, CI 1.81-5.02), were associated with LVH, while sex (female) (OR 0.41, CI 0.24-0.72) was negatively associated with LVH. Paper IV: There was no difference in height, weight, or BMI between patients with CoA (n = 414) and the reference population. Paper V: In the population of 21 patients, an increased left ventricular myocardial ECV was found in 6 cases (28.6 %). Of the patients with increased ECV, 5/6 (83.3 %) were female (p = 0.002). Patients with increased ECV did not otherwise differ from the rest of the study population. iv Conclusions In adults with repaired CoA, HTN and LVH were common, and many patients with HTN had elevated BP despite treatment. The potentially modifiable factors BMI and systolic arm-leg BP gradient were associated with HTN, and the gradient was also associated with elevated BP among patients with diagnosed HTN. The gradient’s significance remained even within what the current guidelines consider acceptable ranges. Potentially modifiable factors associated with LVH were systolic BP and aortic valve disease. We found no general difference in height, weight, or BMI between patients with CoA and the reference population. While LVH was more common among men, increased myocardial ECV was more common among women.
360

Utmaningen att bygga höga hus i Sverige : Hur utformning och byggnadslogistik utmanas av byggnadshöjden

Durakovic, Ahmet, Wang, Ken January 2019 (has links)
Because of increased domestic construction of taller buildings in Sweden during the lastdecade and more to be planned it is crucial to increase the knowledge in this field and analyzethe problems to find suitable solutions.Due to the nature of taller buildings it is important to focus on key areas that can affect theconstruction in its whole. Such as the logistics during the whole process from start to finishand more important the configurations of the building. This can include fire safety and theload from the wind.Through academic literatures and by interviewing people with key positions during theconstruction of tall buildings in Sweden we have gathered a foundation of information onhow to tackle the problems that occurring when constructing tall buildings.The aim of this degree project is to highlight the problems of the construction of tall buildingsand find suitable solutions of how to effectively minimize or solve the problems.

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