• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 600
  • 210
  • 136
  • 54
  • 52
  • 41
  • 20
  • 19
  • 16
  • 16
  • 8
  • 7
  • 7
  • 6
  • 6
  • Tagged with
  • 1466
  • 135
  • 133
  • 107
  • 102
  • 99
  • 95
  • 82
  • 82
  • 80
  • 76
  • 72
  • 72
  • 71
  • 70
  • 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.
581

Měření parametrů GNSS přijímačů / Measurement of GNSS receiver parameters

Beneš, Jiří January 2020 (has links)
Goal of this thesis is to propose and realize a viable method to determine static a dynamic parameters of GNSS receivers. Thesis begins with research of GNSS, foremostly determining position and associated uncertainties of measurement. Following chapter contains research of GNSS receivers, data flow and methods of evaluating parameters of such measurements. Summary of obtained information is then used to schedule measurements, assemble experiment and create evaluating metrics. Main selected evaluating metric is weighted histogram of deviations with extended information. Aplication of proposed metrics onto measurements of GNSS receivers augments available information of GNSS receiver accuracy for whole range of values. This metrics also supplies additional statistical information about course of measurement.
582

Testování metody Precise Point Positioning / Testing of Precise Point Positioning Method

Nosek, Jakub January 2020 (has links)
This diploma thesis deals with the Precise Point Positioning (PPP) method in various variants. The thesis describes the theoretical foundations of the PPP method and the most important systematic errors that affect accuracy. The accuracy of the PPP method was evaluated using data from the permanent GNSS station CADM, which is part of the AdMaS research center. Data of the period 2018 – 2019 were processed. The results of combinations of different GNSS and the results of different observation periods were compared. Finally, the accuracy was verified at 299 IGS GNSS stations.
583

Monitorování výrobní přesnosti / Monitoring of production accuracy

Jelínek, Adam January 2020 (has links)
This master thesis is about implementation of cloud systems for the purpose of monitoring and advancing production accuracy of CNC machine tools within context of Industry 4.0. A demonstration application was created. It is hosted in MindSphere cloud from the Siemens company.
584

Detekce stresu a únavy v komplexních datech řidiče / Stresss and fatique detection in complex driver's data

Šimoňáková, Sabína January 2021 (has links)
Main aim of our thesis is fatigue and stress detection from biological signals of a driver. Introduction contains information on published methods of detection and thoroughly informs readers about theoretical background necessary for our thesis. In the practical application we have firstly worked with a database of measured rides and subsequently chose their most relevant sections. Extraction and selection of features followed afterward. Five different classification models for tiredness and stress detection were used in the thesis and prediction was based on actual data. Lastly, the final section compares the best model of our thesis with the already published results.
585

Myoelectrical activity in elite and recreational fly casters in trout distance and trout accuracy

Ingemansson, Jimmy January 2021 (has links)
No description available.
586

Sledování malých změn objektů / Detection of Little Changes

Čírtek, Jiří January 2008 (has links)
This diploma thesis inspects problems with specification location of edges with higher accuracy then one pixel (subpixel accuracy). In terms of this assignment has been created program, which generates three different shapes of objects. With change of parameters in program is measuring location of gravitational center on objects with subpixel accuracy. Obtained data of gravitational center deviations are depictured in graphs.
587

Modul kombinované globální satelitní navigace / Combined Global Navigation Satellite System Module

Jurajda, David January 2013 (has links)
The thesis objective is design of methodology focused on accuracy measurement in field of GPS/GLONASS receivers. Text is devided into five main parts. The first one is focused on GNSS technology. Second one deals with used coordinate systems and map projections (ETRS89, WGS84, UTM, Gauss-Krüger). Next part discusses statistical methods. Part four is focused on hardware. Then the final part describes experiment realization and obtained data analysis.
588

Přesnost měření na dílenských mikroskopech / Accuracy of measurement on workshop microscope

Pernikář, Václav January 2008 (has links)
This thesis deals with the performance of the measurement accuracy in the optical measuring systems. The first part describes basic principles of metrology and the guidelines of the expression of uncertainty and the factors which influence measurement result. The second part classifies optical measuring systems and describes some measuring principles of them. The final part compares two optical gauges and the evaluation of some of their characteristics through the use of very simple experiments.
589

Technologie rychlého prototypování za použití metody FDM a současně technologie vytavitelného modelu / RP technology using FDM method and investment casting technology

Smrčka, Václav January 2008 (has links)
Determining accuracy of wax patterns is an important in wide implementing rapid prototyping methods in investment casting. This experiment is comparing wax pattern accuracy produced in classical metal die and silicone mould. It has been found out, that wax patterns produced by the silicone mould are ounly about one or two accuracy steps worse then wax patterns produced by classical metal die.
590

Rozměrová přesnost odlitků ze slitin Al vyráběných metodou vytavitelného modelu / Dimensional accuracy of Al castings manufactured by lost wax process

Kučera, Tomáš January 2008 (has links)
The aim of my diploma thesis was to find the possibilities of reaching the dimensional tolerance in the individual phases of casting by the investment casting process. The accuracy of the selected wax patterns and castings were measured by a caliper. At first the selected dimensions of the wax models were measured right after taking them out of the mold and then they were measured during seven days. The castings were measured after pouring. The obtained figures were statistically evaluated. The results show that the large-scale and thick-wall wax model should be coated after seven days of stabilization because the dimensions of the wax model are not stable.

Page generated in 0.1529 seconds