• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 241
  • 142
  • 127
  • 117
  • 16
  • 15
  • 14
  • 12
  • 7
  • 6
  • 6
  • 5
  • 4
  • 2
  • 2
  • Tagged with
  • 773
  • 203
  • 164
  • 124
  • 108
  • 107
  • 104
  • 89
  • 82
  • 73
  • 71
  • 70
  • 69
  • 62
  • 59
  • 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.
171

OpenData-API: Untersuchung der Unsicherheiten für spezifische DWD-Wettervorhersagedaten

Surikov, A., Cavaterra, A., Zehner, M., Lambeck, S. 14 February 2024 (has links)
Das Ziel der Studie ist die Entwicklung eines Fehlerkorrekturmodells fürWettervorhersagedaten, welches zu einem besseren Verständnis der Zuverlässigkeit der lokalenWettervorhersagen beitragen soll. Weiterhin soll das Fehlermodell in weiterführenden Arbeiten innerhalb eines stochastischen modellprädiktiven Reglers (MPC) Anwendung finden. Im Rahmen der Studie werden sowohl prognostizierte als auch tatsächliche Wetterdaten aus dem Raum Fulda erfasst. Diese Daten werden grafisch dargestellt und mittels Fourier-Transformation analysiert. Auf Basis dieser Analyse werden mathematische Modelle zur Vorhersage von Fehlern und zur Bestimmung der Varianz vorgeschlagen. Die Parameter dieser Modelle werden durch lineare Regression bestimmt. Die erzielten Ergebnisse werden ausführlich ausgewertet.
172

Investigation of the influence of gasoline engine induction system parameters on the exhaust emission

Kauffmann, Joseph Chester January 1972 (has links)
No description available.
173

MULTI-PLATFORM IMPLEMENTATION OF SPEECH APIS

Manukyan, Karen 21 August 2008 (has links)
No description available.
174

[pt] AVALIAÇÃO DA TENACIDADE E PREVISÕES DE FRATURAS EM MATERIAIS ELASTOPLÁSTICOS / [en] TOUGHNESS EVALUATION AND FRACTURE PREDICTIONS IN ELASTOPLASTIC MATERIALS

EDUARDO ENES COTA 05 October 2020 (has links)
[pt] Compreender como analisar trincas é essencial para a indústria petroquímica evitar qualquer incidente de uma forma econômica. Normas de Integridade Estrutural fornecem procedimentos conservadores para avaliar componentes trincados como tubulações e vasos de pressão. Portanto, previsões de cargas criticas foram calculadas assumindo uma placa com trinca passante seguindo procedimentos dos níveis 2 e 3 da API 579. Para comparação, testes experimentais foram realizados para avaliar o conservatismo da norma em falha por rasgamento dúctil. Além disso, a tenacidade à fratura foi medida por meio do JIc e curva J-R. A técnica usada durante o processo de fratura foi o método de flexibilidade elástica com descarregamento e carregamentos sequenciais. Adicionalmente, efeito de geometria e tipo de carregamento, os quais possuem grande influência nas medições de tenacidade, também foram avaliados usando conceitos da mecânica da fratura elastoplástica. O material utilizado nesse trabalho foi o API 5L X80, que é um aço de Alta Resistencia e Baixa Liga (ARBL) bifásico desenvolvido para tubulações aplicáveis em aguas profundas. Os ensaios experimentais de medição de tenacidade usando corpos de prova SE(B), que possuem média-alta restrição plástica, foram testados seguindo procedimentos da ASTM E1820-17. Já os experimentos usando corpos de prova SE(T), que possuem baixa restrição plástica, foram realizados considerando procedimentos da literatura. / [en] Understanding how to analyze cracks is essential for the petrochemical industry to avoid accidents or incidents in a safe and economical way. Structural Integrity standards provide conservative procedures to assess the actual strength of cracked components like pipes and pressure vessels. Therefore, critical loads predictions were computed on a plate with a through-wall crack following level 2 and 3 of the fitness-for-service guide API 579. For comparison, experimental tests were performed to evaluate the standard conservatism on a ductile tearing type of failure. Furthermore, the fracture toughness of the steel was measured through standard JIc tests and material s resistance curves (J-R curve). The technique used during the fracturing process was the elastic compliance method with unloading/reloading sequences. Additionally, the effects of the specimen s geometry and the type of loading, which can significantly change the value of its toughness, were also analyzed using concepts of elastoplastic fracture mechanics. The material used in this work was the API 5L X80, which is a High Strength Low Alloy (HSLA) dual-phase steel developed for deepwater pipelines. The fracture toughness measurement tests using SE(B) specimens, which have a medium-to-high plastic constraint, followed the ASTM E1820-17 procedures. The experiments with SE(T) specimens, which present a low plastic restriction, considered literature procedures.
175

Gamification of reading aloud using Godot and Web speech / Spelifiering av högläsning genom användning av Godot och Web Speech

Ali Kadhum, Bashir January 2022 (has links)
Immersion is a subject studied in various areas and especially in games, since a game that immerses a player, counts as a game of great value. Many studies have been performed to understand how to measure immersion through various forms of questionnaires, but how can one with the help of gamification and loud reading make reading more immersive? To see if gamification and loud reading can make reading more immersive an application is developed, the application provides a paragraph, and when read loud correctly creates sound and shows images. Then the application is tested by a group of people to see if gamification can be used to bring life to reading and further immerse the reader in the world of books.
176

Unga vuxnas val av betalningsmetoder: En analys avkodkomplexitet för betalmetoder i en spar-applikation / Young Adults' Choice of Payment Methods: AnAnaysis of Code Complexity in a saving application

Fredholm, Alexander, Vo, Ta Quang January 2024 (has links)
I detta examensarbete utforskas vilka överförings- och betalningsmetoder ungavuxna föredrar av Swish, Klarna och Tink samt tekniska implementering gällandekodkomplexitet för dessa överförings- och betalningsmetoder. Detta är viktigt för attkunna erbjuda överförings- och betalningsmetoder som unga vuxna känner sigtrygga med och till att denna målgrupp fortsätter gå mot ett kontantfritt samhälle.Studien syftar till att fylla det forskningsgap som finns kring en direkt jämförelse avdessa betalningsmetoder.Forskningen visar att unga vuxna föredrar metoder som är användarvänliga och harett starkt varumärkesrykte. Forskningen visar också behovet av att vända sigspecifikt till unga vuxna då dessa saknar finansiell kunskap inom området.En prototyp utvecklades för att jämföra kodkomplexitet mellan de mest populärabetalningsmetoderna Swish, Klarna och Tink. Kodkomplexiteten förimplementeringen av dessa metoder mättes med Cyclomatic Complexity, ochresultaten visade att Swish, Klarna och Tink alla har en liknande implementering viaAPI-anrop i sin enklaste form, vilket innebär att valet mellan dem inte innebär någonskillnad i kodkomplexitet.Utifrån jämförandet av kodkomplexitet valdes en komplett prototyp att utvecklas föratt funktionstesta en implementetion av Tink, med hjälp av Quarkus för logik-delenkallad backend och SwiftUI för utseende-delen kallad frontend. SwiftUI valdes föratt skapa en dynamisk och användarvänlig gränssnittsupplevelse för Apple-enheter,medan Quarkus valdes för sin robusthet och effektivitet på server sidan.Prototypen funktionstestades och utvärderades av produktägaren Peak AMSecurities AB. Resultatet blev att prototypens kodbas kan användas i framtidaproduktionssättning.Denna studie bidrar till insikt om unga vuxnas preferenser för digitalabetalningsmetoder och erbjuder en teknisk grund för vidare forskning inomområdet. Genom att jämföra Swish, Klarna och Tink ger arbetet viktiga insikter somkan hjälpa utvecklare att skapa bättre finansiella verktyg som möter användarnasbehov och förväntningar. / This thesis explores which transfer methods young adults prefer among Swish,Klarna, and Tink, as well as the technical implementation concerning code com-plexity for these transfer and payment methods. This is important to offer transferand payment methods that young adults feel comfortable with and to ensure thistarget group continues to move towards a cashless society. The study aims to fill theresearch gap regarding a direct comparison of these payment methods.Research shows that young adults prefer methods that are user-friendly and have astrong brand reputation. The research also highlights the need to specifically ad-dress young adults as they lack financial knowledge in the area.A prototype was developed to compare code complexity with the most popular pay-ment methods Swish, Klarna, and Tink. The code complexity for the implementa-tion of these methods was measured using Cyclomatic Complexity, and the resultsshowed that Swish, Klarna, and Tink all have similar implementations via API callsin their simplest form, which means they do not increase code complexity for devel-opers.Based on the comparison of code complexity, a complete prototype was chosen tobe developed for functional testing, implemented with Tink, using Quarkus for thebackend logic and SwiftUI for the frontend interface. SwiftUI was chosen to createa dynamic and user-friendly interface experience for Apple devices, while Quarkuswas chosen for its robustness and efficiency in server-side processing.The prototype was functionally tested and evaluated by the product owner Peak AMSecurities AB. The result was that the prototype's codebase can be used in futureproduction deployment.This study contributes to the understanding of young adults' preferences for digitalpayment methods and provides a technical foundation for further research in thearea. By comparing Swish, Klarna, and Tink, the work offers important insightsthat can help developers create better financial tools that meet users' needs and ex-pectations.
177

Labyrinth Seal Preprocessor and Post-Processor Design and Parametric Study

Mehta, Rumeet Pradeep 03 June 2008 (has links)
Vibrations caused due to aerodynamic excitation may cause severe limitation to the performance of turbomachines. The force resulting from the non-uniform pressure distribution within the labyrinth cavity is identified as a major source of this excitation. In order to perform rotor dynamic evaluation of rotor-bearing-seal system, accurate prediction of this force is essential. A visual basic based front-end, for a labyrinth seal analysis program, has been designed herein. In order to accurately predict the excitation force, proper modeling of labyrinth leak path is important. Thus, the front-end developed herein incorporates a leak-path geometric diagram for visual analysis of labyrinth leak path and tooth location. Furthermore, to investigate influence of various operating conditions and gas properties on excitation force (effective cross-coupling stiffness), a parametric study is performed on both the eye seal and the balance piston labyrinth seal. / Master of Science
178

Implementing an Application Programming Interface for Distributed Adaptive Computing Systems

Yao, Kuan 12 June 2000 (has links)
Developing applications for distributed adaptive computing systems (ACS) requires developers to have knowledge of both parallel computing and configurable computing. Furthermore, portability and scalability are required for developers to use innovative ACS research directly in deployed systems. This thesis presents an Application Programming Interface (API) implementation developed in a scalable parallel ACS system. The API gives the developer the ability to easily control both single board and multi-board systems in a network cluster environment. The API implementation is highly portable and scalable, allowing ACS researchers to easily move from a research system to a deployed system. The thesis details the design and implementation of the API, as well as analyzes its performance. / Master of Science
179

Designing and Implementing a Rust API for Mimer SQL by Foreign Function Interfacing

Axelman, Edvard, Bruce, Edvin, Eriksson, Simon, Forslund, William, Hammarberg, Fredrik, Wallsten, Viktor January 2024 (has links)
According to research, software security vulnerabilities most often stem from memory related issues. These memory issues are mitigated in many programming languages, but often at the cost of performance. Rust, however, is a programming language which addresses these memory issues without significant losses in performance. Leveraging this strength, an Application Programming Interface (API) for interacting with Mimer SQL databases was developed in Rust. As there is no standard for writing database APIs in Rust, inspiration was drawn from other Rust APIs for relational database management systems to ensure similar functionality. The development process involved three main steps: stakeholder requirement specification, system design and implementation, and testing and evaluation. Stakeholder requirements were identified collaboratively to ensure alignment between user needs and API functionality. The system design consists of two libraries: the “FFI Library”, facilitating interaction with the Mimer SQL C API, and the “API library”, providing a user-friendly interface for Rust developers. Key features include connection management, statement preparation, cursor handling, and transaction support. Testing methodologies include unit and integration testing, performance benchmarking against the C API, and consideration for memory safety. The resulting API demonstrates performance parity with the C API and adherence to Rust conventions. / Enligt forskning beror säkerhetsbrister i programvara oftast på minnesrelaterade problem. Dessa minnesproblem motverkas i många programmeringsspråk, men ofta på bekostnad av prestanda. Rust är dock ett programmeringsspråk som åtgärdar dessa minnesproblem utan betydande prestandaförluster. Genom att utnyttja denna styrka utvecklades ett applikationsprogrammeringsgränssnitt (API) för att interagera med Mimer SQL-databaser i Rust. Eftersom det inte finns någon standard för att skriva databas-API:er i Rust hämtades inspiration från andra Rust-API:er för relationsdatabaser för att säkerställa liknande funktionalitet. Utvecklingsprocessen innefattade tre huvudsteg: specifikation av intressentkrav, systemdesign och implementering samt testning och utvärdering. Intressentkraven identifierades genom samarbete för att säkerställa överensstämmelse mellan användarbehov och API-funktionalitet. Systemdesignen består av två bibliotek: “FFI-biblioteket”, som erbjuder interaktionen med Mimer SQL C API:t, och “API-biblioteket”, som erbjuder ett användarvänligt gränssnitt för Rust-utvecklare. Nyckelfunktioner inkluderar anslutningshantering, validering av SQL-satser, iterering över resultatset och transaktionsstöd. Testmetoderna omfattar enhets- och integrationstester, prestandajämförelser med C API:t och testning av minnessäkerhet. Det resulterande API:t visar prestandaparitet med C API:t och följer konventioner i Rust.
180

Förbättra användning av API : Ett case inom Business Intelligence med implementering av en anpassad portal-lösning

Almeling, Marie, Svedlund Ishii, Tomoko January 2024 (has links)
API, Application Program Interface, enables users to interact with data. However, access to an API often depends on programming proficiency, which can limit its usage. This study explored ways to improve API usage by developing and implementing a custom portal for Power BI’s API, called AdminPortal (AdP).         To address the first research question, which investigated whether AdP improved API usage compared to the existing portal, a System Usability Scale (SUS) survey was conducted. The second research question was studied through qualitative methods, including open-ended questions and documentation of use cases, to gain deeper insights into how AdP could be utilized and how it improved the workflow for Power BI administration. The results showed a statistically significant difference between AdP and the existing portal, with AdP receiving higher SUS scores. Additionally, comparing workflows with and without AdP highlighted two use cases, where AdP simplified tasks by providing a user-friendly interface, in contrast to the manual processes or coding requirements of the existing portal.   AdP demonstrated the feasibility of accessing API benefits without coding. While offering advantages like automation and flexibility, AdP also presented challenges such as information selection and user interface complexity. / API, Application Program Interface, gör det möjligt för användare att interagera med data. Tillgängligheten till API är ofta beroende av programmeringskunskaper. Detta medför begränsningar i användandet av API. Denna studie har genom att utveckla och implementera en anpassad portal för Power BI:s API, kallad AdminPortal (AdP), studerat möjligheten till en förbättring av användningen av API.  I studien användes en kombination av kvantitativa och kvalitativa metoder. Den första forskningsfrågan fokuserar på om AdP förbättrade användningen av API jämfört med att använda den befintliga Power BI-portal, vilket undersöktes med hjälp av System Usability Scale (SUS). Den andra forskningsfrågan studerar djupare insikter i hur AdP kan användas för att förbättra arbetsflödet för administration av Power BI. För detta användes kvalitativa metoder, inklusive öppna frågor under SUS-undersökningen och dokumentation av användarfall.  Resultaten visar en statistiskt signifikant skillnad mellan AdP och den befintliga portal som tillhandhålls av Power BI, där AdP får högre SUS-poäng. Dessutom, jämfördes två användarfall, med eller utan AdP, där AdP visar på mer användarvänlighet jämfört med de manuella processerna eller kodningskompetensen som krävs för den befintliga Power BI-portalen.  AdP visar möjligheten att få tillgång till fördelar av API utan kodning. Samtidigt som AdP erbjuder fördelar som automatisering och flexibilitet, har även AdP utmaningar relaterade till informationsurval och användargränssnittets komplexitet.

Page generated in 0.056 seconds