L’émergence des contenus multimédias sur Internet, l’accès aux contenus multimédias et leurs enrichissements constituent un vaste domaine de recherche. Cette thèse s’inscrit dans ce contexte, et présente la réalisation complète et opérationnelle d’une plate-forme de diffusion multimédia interopérable et ouverte. Après avoir spécifié l’architecture de la plate-forme en introduisant le support de tous types de médias, l’indexation efficace, la recherche de contenus et leurs visualisations en ligne, la première contribution de cette thèse est une extension de la norme MPEG 7 permettant d’assurer la gestion des contenus graphiques 3D, ainsi que des informations liées à un système multimédia. Cette extension a permis le développement d’une plate-forme de diffusion gérant tous types de contenus, appelée MyMultimédiaWorld.com, entièrement normalisée à l’aide de MPEG 7 et MPEG 4. La deuxième contribution porte sur les facilités d’accès à la plate-forme multimédia. D’une part, nous avons développé une solution simple et originale d’API d’accès aux contenus multimédia par de applications tierces. D’autre part, nous proposons une solution basée sur le principe d’API pour intégrer dans une plate-forme des algorithmes multimédias. Cette solution permet la création de nouveaux services à partir d’algorithmes externes. A partir des deux APIs, nous proposons une nouvelle approche pour l’évaluation automatique d’algorithmes multimédias. Les aspects clés de cette approche sont l’évaluation en ligne, des conditions identiques pour l’exécution des algorithmes et la mise à jour automatique des résultats. L’approche développée est démontrée à l’aide de deux benchmarks différents, le premier pour l’évaluation des algorithmes de compression de maillage 3D et le second pour le benchmark des descripteurs de formes 3D développé dans le cadre des projets FAME2 et POPS du pôle de compétitivité System@tic. Les avantages de cette approche ont été reconnus récemment par le comité de normalisation MPEG avec sa décision d’adopter www.MyMultimédiaWorld.com pour l’évaluation des algorithmes de compression de maillage 3D. / The emergency of the Internet as a medium for multimedia content, the manner to access the content including means of enriching it with semantic information constitute large research domains. This thesis situates in this context and introduces an operational implementation of an open and interoperable multimedia content distribution platform. After specifying the platform architecture introducing the support of all media types, effective indexation, content search and on-line visualisation, the first contribution of the thesis consists in several MPEG 7 extensions allowing 3D object description, as well as multimedia service specification. These extensions makes it possible a novel approach of asset management systems fully normalised with MPEG 7 and MPEG 4, the concept being demonstrated by the implementation of the www.MyMultimédiaWorld.com platform. The second contribution of the thesis concerns the fundaments and tools to ensure easy access to the multimedia platform. We developed an original solution based on an access API making possible to third party applications to access content and metadata resident into the platform. A second API, makes it possible to integrate multimedia processing algorithm directly in the platform, transforming it into a continuous evolving environment. The Web2.0 paradigm of user generated content is now extended to user generated functionality. Based on the two APIs, we proposed a novel approach for evaluation of multimedia related algorithms. The key aspects are the online processing, evolving content, execution of algorithms in identical conditions, always up-to-date results. The approach is demonstrated for two benchmarks: the first deals with 3D mesh compression algorithms and the second with 3D shape descriptors developed in the FAME2 and POPS projects of the System@tic competitiveness cluster. The advantages of such benchmarking approach were recognized recently by MPEG committee when deciding to adopt www.MyMultimédiaWorld.com as the standard evaluation tool for 3D mesh compression.

Over the past several decades there has been an emphasis in educational research on student assessment and achievement in mathematics. Formative assessments are designed to inform the instructional decision making process and require assessment literacy to interpret and use data provided by these assessments. Many teachers and students were lacking assessment literacy; therefore, they were unable to adjust their instruction and study habits to increase student performance on summative assessments. This study investigated the impact Scholastic Math Inventory (SMI) benchmarks and assessment literacy training had on summative assessments and student motivation in mathematics. The researcher analyzed unit posttest scores and results from the Instructional Materials Motivation Survey (IMMS) for seventh- and eighth-grade mathematics control and treatment groups. The study took place in a public International Baccalaureate (IB) charter school that served families from suburban communities in northern Utah. An analysis of covariance (ANCOVA), using previous CRT math scores as the covariate, was conducted to determine whether there was a difference in the scores of the students who received the SMI benchmarks and assessment literacy training and the students who did not receive this treatment. An analysis of variance (ANOVA) tested whether there was a difference between the IMMS scores for the students who received the SMI benchmarks and assessment literacy training versus students who did not receive this treatment. The study results indicated that summative scores for seventh- and eighth-grade students who received instruction for the unit along with SMI benchmark and assessment literacy training were not statistically different from students in the control group. The results also showed that the student mathematical motivation overall mean scores were not statistically significant. However, the subscale of satisfaction did show a significant difference in the means. The researcher recommended that use of SMI and assessment literacy training be examined carefully, as these strategies may not improve summative assessment scores in all cases.

Microsoft Access är enkelt att komma igång med vilket är en av anledningarna till att det är så populärt,  LKAB har ett system som är skapat i Microsoft Access som kallas Teleregistret. Systemet är ett dokumentationssystem som innehåller kopplingsscheman över bland annat fiber och kopparnätet för prioriterade telefoner, CCTV med mera.LKAB tycker själva att detta system börjar kännas utdaterat, trögt att arbeta med, och har önskemål att ersätta det med ett nytt system i form av en webbapplikation med ett REST-API som även har ett stöd för mobila enheter. Syftet med denna studie utöver att skapa ett nytt dokumentationssystem åt kunden, är att jämföra det nya systemet mot det befintliga. Detta för att få reda på om ett nytt system kan innebära bättre säkerhet, samt ta reda på om tidsbesparingar kan göras genom att införa ett nytt system. För att besvara frågeställningarna har det utförts litteratursökningar, en jämförande studie där båda systemen jämförts mot sina respektive best practises för säkerhet, ett experiment där det har testats om systemen är skyddade mot SQL-injection och två användartest för att ta reda på om tidsbesparingar kan göras. Resultaten av denna studie visar att en ny webbapplikation med ett REST-API är ett säkrare alternativ för kunden och att det innebär tidsbesparingar initialt för personal som inte använder det befintliga systemet frekvent, men tidsbesparingar ses först efter en viss inlärningsperiod för personal som använder det befintliga systemet dagligen.

In der vorliegenden Arbeit werden die Datenbankmanagementsysteme MongoDB, ScyllaDB, OrientDB, Aerospike und Redis mit dem Yahoo! Cloud Serving Benchmark unter der Verwendung von SSD-Speicher getestet. Dazu werden zuerst die verschiedenen NoSQL-Systemtypen beschrieben. Besonderheiten von SSD-Speicher werden zusammengefasst. Anschließend werden Besonderheiten der ausgewählten Datenbankmanagementsystemen und des Yahoo! Cloud Serving Benchmarks beschrieben, um die durchzuführenden Benchmarks zu planen. Weiterhin wird die verwendete Hardware beschrieben, um eine Replikation dieser Benchmarks zu ermöglichen und ein besseres Bild der zu messenden Performance zu bieten. Nach der Planung der Durchführung der Benchmarks, werden die verschiedenen Datenbankmanagementsysteme auf der oberen Grenze getestet, welche die gegebene Hardware bietet. Mit den Ergebnissen dieser werden weitere Benchmarks unter diversen Bedingungen geplant und durchgeführt. Die Ergebnisse werden jeweils ausgewertet und in dieser Arbeit eingebunden. Diese sind von den gegebenen Umständen stark beeinflusst, sodass allgemeingültige Aussagen nicht möglich sind. Zuletzt wird im Ausblick, welche inhaltliche Lücken und Fragen offen stehen oder weitere zusammenhängende Problemstellungen beschrieben.:1 Einleitung 1.1 Motivation 1.2 Vorgehensweise 2 Gegenstand des Benchmarks 2.1 Modell 2.1.1 Key-Value Store 2.1.2 Document Store 2.1.3 Wide-Column Store 2.1.4 Graph Store 2.1.5 Multi-Model 2.2 Medium 2.2.1 SSD 2.2.2 In-Memory 3 Technische Randbedingungen des Benchmarks 3.1 Ausgewählte Datenbankmanagementsysteme 3.2 Yahoo! Cloud Serving Benchmark 3.3 Genutzte Hardware 3.4 Testlauf des Benchmarks 3.5 Erzielter Vergleich 4 Erste Testreihe: 150GB 21 4.1 Aufgetretene Probleme 4.2 Verwendete Einstellungen 4.3 Ergebnisse: erster Versuch 4.4 Ergebnisse: 150GB 5 Testreihen: Übergreifende Szenarien 5.1 Testreihe 50GB 5.2 Testreihe 10GB 5.3 Testreihe Großes Feld 5.4 Testreihe Sekundärindex 5.5 Testreihe Latenz 5.6 Testreihe Discord 6 Ergebnisse DBMS-intern 6.1 MongoDB 6.2 ScyllaDB 6.3 OrientDB 6.4 Aerospike 6.5 Redis 7 Schlussteil 7.1 Auswertung 7.1.1 YCSB-Tool 7.1.2 MongoDB 7.1.3 ScyllaDB 7.1.4 Aerospike 7.1.5 OrientDB 7.1.6 Redis 7.1.7 SSD-Speicher 7.2 Zusammenfassung 7.3 Ausblick

Indiana University-Purdue University Indianapolis (IUPUI) / With the large number of Android apps available in app stores such as Google Play, it has become increasingly challenging to choose among the apps. The users generally select the apps based on the ratings and reviews of other users, or the recommendations from the app store. But it is very important to take the security into consideration while choosing an app with the increasing security and privacy concerns with mobile apps. This thesis proposes different ranking schemes for Android apps based on security apps evaluated from the static code analysis tools that are available. It proposes the ranking schemes based on the categories of evidences reported by the tools, based on the frequency of each category, and based on the severity of each evidence. The evidences are gathered, and rankings are generated based on the theory of Subjective Logic. In addition to these ranking schemes, the tools are themselves evaluated against the Ghera benchmark. Finally, this work proposes two additional schemes to combine the evidences from difference tools to provide a combined ranking.

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The subject of JavaScript frameworks/libraries and which to choose as a developer, organization or client has been the target of quite some research, and even more debate. This thesis aims to investigate four of these, namely Angular, React, Svelte and Vue by building a functionally identical application and running performance tests towards them through Apache JMeter to measure throughput. Furthermore, Webdriver plugin will be added to measure full render response times to add another dimension to the discussion. The result of the investigation shows that even if some of the tests speak very highly in favor of some of these frameworks/libraries, some do not, and adding in previous research into perceived values as well as performance metrics of these frameworks make the picture even more complex. Furthermore, the frameworks/libraries in question evolve very rapidly, constantly contending against each other. What this study does, in the end, is to provide a basic method of comparison that can be extended, which will aid stakeholders in researching the frameworks/libraries strengths and weaknesses as well as which framework that fits their project’s needs. / Ämnet JavaScript och dess ramverk och bibliotek, samt vilket man bör välja som utvecklare, organisation eller kund har varit mål för en stor mängd forskning, och än mer debatt. Den här uppsatsen ämnar undersöka fyra av dessa ramverk/bibliotek genom att bygga en funktionellt identisk applikation och genomföra prestanda tester med Apache JMeter mot dem för att mäta genomströmning. Utöver detta kommer även ett instickningsprogram till JMeter vid namn Webdriver användas på samma applikationer för att mäta responstid och ytterligare expandera diskussionen. Resultatet av den här undersökningen visar att vissa av dessa tester talar i förmån för vissa ramverk/bibliotek, medan vissa inte gör det. Adderar man dessutom tidigare forskning rörande mjukare värden och prestandamätningar så blir bilden än mer komplex. Vidare kan nämnas att dessa ramverk och bibliotek utvecklats oerhört under de senaste åren och fortfarande utvecklas, och är i konstant kamp mot varandra. I slutändan skulle jag hävda att det bästa man kan göra som intressent är att samla så mycket fakta rörande både sitt eget projekt och de ramverk/bibliotek som kan tänkas användas, och sen välja. Vad den här studien kan ge en intressent är en reproducerbar metod med expansionsmöjligheter för att få ut nödvändig information inför nämnda val.

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The concept of efficiency measurement is based on the definition of a frontier that envelopes observed production plans. The effect of pollution on productive efficiency is typically studied by considering pollution as not freely disposable (i.e., there is a cost incurred to dispose of pollution) or by assigning shadow prices to pollution outputs. However, the frontier along with the required technological assumptions (such as convexity) needed for a definition of a frontier may be replaced with the concept of pair-wise dominance. With data from a manufacturing facility, the use of pair-wise dominance allows one to consider a wide spectrum of inputs and outputs. Pair-wise dominance can also be applied to segregate production plans into sets according to their relative environmental performance and productive efficiency. These sets are used to identify reference production plans upon which distance-based measures of performance are defined. This research applies pair-wise dominance to time series data from a printed circuit board manufacturing facility to illustrate the approach. The proposed approach is compared to the Data Envelopment Analysis (DEA) approach. It was observed that for detailed production data the proposed approach was more informative concerning the measurement of productive efficiency than the standard methods. / Ph. D.