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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

GPS-Trak Low Cost Alternative to Auto-Tracking Using GPS and Multimode Single Axis Antenna Techniques

Sullivan, Arthur 10 1900 (has links)
International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, California / The GPS Satellite System provides precise determination of time, space, and position of aerospace (airborne) vehicles during flight and flight test situations. The cost of "GPS" equipment has been decreasing dramatically -- a phenomenon similar to that which was experienced with "hand held" calculators 20 years or so ago. By the use of a multigain (and beam) antenna and GPS, a very low cost single axis system can be utilized for reception of telemetry and at the same time to provide accurate position, velocity, and acceleration information concerning the airborne vehicle.
2

The nature and usefulness of corporate cash management services provided by banks to companies in Hong Kong.

January 1985 (has links)
by Yu Ying Choi Alan Abel. / Bibliography: leaves 72-73 / Thesis (M.B.A.)--Chinese University of Hong Kong, 1985
3

Positional differences of physical peak intense periods in Swedish elite football : A pilot study of under 19 and first team players / Positionsskillnader vid den mest fysiskt intensiva perioden i svensk elitfotboll : En pilotstudie av ungdomsspelare och seniorspelare

Eriksson, Adam January 2024 (has links)
Syfte: Syftet med denna studie är att med hjälp av multivariata parametrar undersöka skillnader i fysisk extern belastning under den mest intensiva perioden (MIP) av match för spelare på ungdomselit och seniornivå samt att identifiera eventuella skillnader mellan positioner och halvlekar.Metod: En kvantitativ retrospektiv studie tillämpades, där spelare från ett seniorlag (SEN)spelandes i högsta divisionen i Sverige samt fotbollsspelare från ett ungdomselitlag (U19)från samma klubb spelades i näst högsta divisionen för åldersgruppen deltog i studien. Fysisk extern belastning mättes med hjälp av Global Positioning System (GPS). MIP analyserades utifrån spelares taktiska utgångsposition och med hjälp av multivariata parametrar. Rullande medelvärden användes för analys av 1-min MIP.Resultat: SEN täckte signifikant längre distans under den mest intensiva 1-mintusperioden av match jämfört med U19 (SEN 140 ± 22,3 m; U19 120 ± 24,1 m, p < 0.001). Vid jämförelse mellan positioner täcker SEN-Lateral längre distanser än U19-Lateral under mest intensiva 1-mintusperioden av MIP-kinematik (135 ± 23.5 m vs 104 ± 40.3 m, p = 0.015).Slutsats: Sammanfattningsvis konfirmerar denna studie en skillnad av den mest intensiva 1-minuters perioden för senior- och ungdomsspelare för MIPk. Studien visar att seniorspelare positionerade lateral på planen täcker längre distanser under MIPk jämfört med U19 på samma position. Praktiker bör beakta dessa skillnader i sina träningsupplägg för att kunna förbereda ungdomsspelare för de fysiska krav som ses i seniormiljön / Aim: The present study aimed to investigate differences in physical external load during the most intense period (MIP) of match play for youth and senior player and to indentify possible differences between positions and halves, with multivariate parameters. Method: A quantitative retrospective study was applied, players from a senior team playing in the highest division in Sweden participated in the study as well as football players from a youth elite team from the same club playing in the second highest division for the age group. Physical external load was measured using Global Positioning System (GPS). MIP was analyzed based on players' initial tactical position and using multivariate parameters. Rolling averages were used to analyze 1-min MIP.Results: SEN covered significantly longer distances during the most intense 1-min period of the match compared to U19 (SEN 140 ± 22,3 m; U19 120 ± 24,1 m, p < 0.001). When comparing between positions, SEN-Lateral covers longer distances than U19-Lateral during the most intense 1-minute period of the MIPk (135 ± 23.5 m vs 104 ± 40.3 m, p = 0.015).Conclusions: In conclusion, this study confirms a difference in the most intense 1-minute period for senior and youth players for MIPk. The study shows that senior players positioned laterally on the pitch cover longer distances during MIPk compared to U19-Lateral. Practitioners should consider these differences in their training programmes in order to prepare youth players for the physical demands seen in the senior environment.
4

Vorhersage des in-game Status im Fußball mit Maschinellem Lernen basierend auf zeitkontinuierlichen Spielerpositionsdaten

Lang, Steffen, Wild, Raphael, Isenko, Alexander, Link, Daniel 14 October 2022 (has links)
Diese Studie beschäftigt sich mit der Vorhersage, ausschließlich auf Basis von Spielerpositionsdaten, ob ein Fußballspiel in einem Moment unterbrochen ist oder nicht. Hierfür wurden vier machine-learning Modelle mit Daten von 102 Spielen der Fußball Bundesliga trainiert und ihre Genauigkeit evaluiert. Dabei zeigte sich eine Genauigkeit von bis zu 92% für einen einzelnen Moment und eine Präzision von 81% für ganze Unterbrechungen. / This study deals with the prediction, based solely on player position data, whether a soccer match is interrupted at a moment or not. For this purpose, four machine-learning models were trained with data from 102 matches of the German Bundesliga and their accuracy was evaluated. The results showed an accuracy of up to 92% for a single moment and a precision of 81% for whole interruptions.

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