Tento projekt se podrobně zaměřuje na data z avioniky a může být chápán jako horní vrstva nad systémy monitorujícími poruchy, která poskytuje dodatečné informace o letu. Pro konkrétní návrh byly vybrány Airbus A320 a A340 jako zástupci moderních a rozšířených dopravních letadel. Vyvíjená aplikace analyzuje dvě vybrané komplexní situace z toku dat palubní avioniky a hledá podmínky, které vedou k abnormálnímu chování letadla (nikoliv poruchám). Práce je primárně zaměřena na letové fáze, strukturu dat (a jejich kategorizaci) a na vývoj aplikace na bázi fuzzy systému s expertní znalostí uloženou v jeho pravidlech.

The thesis describes a comprehensive solution of a web application for administration of extensive LAN and WAN networks, which are based on nodes by MikroTik . There is a feasibility study, which says, what modules and what functionality should be included. Also a database structure is clarified and technical procedures of solution of the whole assignment are outlined with an emphasis on universality and maximal simplicity.

This thesis describes principles of specific HTTPS attacks and provides realization of attacks using lab environment based on VMware. Elaboration is divided to specific dedicated attacks, each part evaluates risk of vulnerability and describes the way of realization in guides for students and lector´s manuals.

Den stora mängden tillgänglig data på internet kan användas för att förbättra förutsägelser genom maskininlärning. Problemet är att sådan data ofta är i ett obehandlat format och kräver att någon manuellt bestämmer etiketter på den insamlade datan innan den kan användas av algoritmen. Semi-supervised learning (SSL) är en teknik där algoritmen använder ett fåtal förbehandlade exempel och därefter automatiskt bestämmer etiketter för resterande data. Ett tillvägagångssätt inom SSL är att representera datan i en graf, vilket kallas för graf-baserad semi-supervised learning (GSSL), och sedan hitta likheter mellan noderna i grafen för att automatiskt bestämma etiketter.Vårt mål i denna uppsatsen är att förenkla de avancerade processerna och stegen för att implementera en GSSL-algoritm. Vi kommer att gå igen grundläggande steg som hur utvecklingsmiljön ska installeras men även mer avancerade steg som data pre-processering och feature extraction. Feature extraction metoderna som uppsatsen använder sig av är bag-of-words (BOW) och term frequency-inverse document frequency (TF-IDF). Slutgiltligen presenterar vi klassificering av dokument med Label Propagation (LP) och Multinomial Naive Bayes (MNB) samt en detaljerad beskrivning över hur GSSL fungerar.Vi presenterar även prestanda för klassificering-algoritmerna genom att klassificera 20 Newsgroup datasetet med LP och MNB. Resultaten dokumenteras genom två olika utvärderingspoäng vilka är F1-score och accuracy. Vi gör även en jämförelse mellan MNB och LP med två olika typer av kärnor, KNN och RBF, på olika mängder av förbehandlade träningsdokument. Resultaten ifrån klassificering-algoritmerna visar att MNB är bättre på att klassificera datasetet än LP. / The large amount of available data on the web can be used to improve the predictions made by machine learning algorithms. The problem is that such data is often in a raw format and needs to be manually labeled by a human before it can be used by a machine learning algorithm. Semi-supervised learning (SSL) is a technique where the algorithm uses a few prepared samples to automatically prepare the rest of the data. One approach to SSL is to represent the data in a graph, also called graph-based semi-supervised learning (GSSL), and find similarities between the nodes for automatic labeling.Our goal in this thesis is to simplify the advanced processes and steps to implement a GSSL-algorithm. We will cover basic tasks such as setup of the developing environment and more advanced steps such as data preprocessing and feature extraction. The feature extraction techniques covered are bag-of-words (BOW) and term frequency-inverse document frequency (TF-IDF). Lastly, we present how to classify documents using Label Propagation (LP) and Multinomial Naive Bayes (MNB) with a detailed explanation of the inner workings of GSSL. We showcased the classification performance by classifying documents from the 20 Newsgroup dataset using LP and MNB. The results are documented using two different evaluation scores called F1-score and accuracy. A comparison between MNB and the LP-algorithm using two different types of kernels, KNN and RBF, was made on different amount of labeled documents. The results from the classification algorithms shows that MNB is better at classifying the data than LP.

No description available.

The number of IoT and cyber-physical systems will be growing in the comingfuture. According to estimates, more than 21 billion IoT devices are expectedto exist by 2025. The adoption of Digital Twins and AI-enhanced IoTapplications is projected to fuel the expected increase in IoT spending.It is essential to accelerate the development., deployment, and administrationof these IoT applications, which can be accomplished by orchestrating IoTcomponents, devices, services, and systems. IoT Intelligence orchestrationposes several obstacles that must be overcome for a wide range of domainspecific use cases and applications to follow and support business logic.This thesis aims to create a secure and full proof way of orchestratingintelligence within IoT devices from multiple ecosystems.It also aims tobreak down the current approach of monolithic development and introduce amixture of visual programming and distributed systems considering all thenecessary cyber-security aspects,.A comparison of the developed framework and the existing tool with thenecessary characteristics like security, response time and the accuracy too isincluded.of the thesis.

<p>In many industries the tracking and tracing of products within the supply chain is required by law. Companies in the metal working industry exchange so-called material test reports, which specify the product’s properties, the customer’s requirements, and serve as an assurance between the supplier and the customer. Internet technologies have changed the way companies exchange information and conduct business. In the metal working industry companies can implement an intermediary platform and make the exchange of material test reports more efficient. Furthermore, a client application that allows the company to export test reports from their information system directly to the intermediary can significantly decrease the processing costs. This inter-organizational collaboration can render an increase in productivity for customers and suppliers. </p><p>The main goal of the thesis is to analyze how companies in a supply chain can exchange documents with an intermediary over the protocol SOAP as well as support companies by showing a structured procedure for how to achieve security in a system using SOAP. SOAP is a platform independent XML-based communication protocol. The Extensible Markup Language (XML) is of major importance in e-business applications, because of its platform, language, and vendor independent way of describing data. As a universal data format, it enables the seamless connection of business systems. </p><p>SOAP does not provide any security and is usually implemented over HTTP, which allows it to pass through firewalls. Companies are only prepared to join an inter-organizational collaboration if IT-security is guaranteed. In the exchange of material test reports, security has two objectives. The first is to replace the handwritten signature in the paper-based document exchange. The second is to guarantee security for the material test reports as well as for the information intermediary. </p><p>SOAP’s extensibility model allows organizations to develop new extensions, which build upon the protocol and provide functions which aren’t specified. Specifications for attachments as well as for security should be implemented in the electronic document exchange. To design a secure system, each security concept, such as confidentiality, authentication and integrity, can be analyzed in its context and the appropriate standard can thereafter be implemented.</p>

The objective of the research was to develop high quality GaN epitaxial growth on alternative substrates that could result in higher external quantum efficiency devices. Typical GaN growth on sapphire results in high defect materials, typically 10⁸⁻¹⁰cm⁻², due to a large difference in lattice mismatch and thermal expansion coefficient. Therefore, it is useful to study epitaxial growth on alternative substrates to sapphire such as ZnO which offers the possibility of lattice matched growth. High-quality metalorganic chemical vapor deposition (MOCVD) of GaN on ZnO substrate is hard to grow due to the thermal stability of ZnO, out-diffusion of Zn, and H₂back etching into the sample. Preliminary growths of GaN on bare ZnO substrates showed multiple cracks and peeling of the surface. A multi-buffer layer of LT-AlN/GaN was found to solve the cracking and peeling-off issues and demonstrated the first successful GaN growth on ZnO substrates. Good quality InGaN films were also grown showing indium compositions of 17-27% with no indium droplets or phase separation. ZnO was found to to sustain a higher strain state than sapphire, and thereby incorporating higher indium concentrations, as high as 43%, without phase separation, compared to the same growth on sapphire with only 32%. Si doping of InGaN layers, a known inducer for phase separation, did induce phase separation on sapphire growths, but not for growths on ZnO. This higher strain state for ZnO substrates was correlated to its perfect lattice match with InGaN at 18% indium concentration. Transmission electron microscopy results revealed reduction of threading dislocation and perfectly matched crystals at the GaN buffer/ZnO interface showing coherent growth of GaN on ZnO. However, Zn diffusion into the epilayer was an issue. Therefore, an atomic layer deposition of Al₂O₃was grown as a transition layer prior to GaN and InGaN growth by MOCVD. X-ray and PL showed distinct GaN peaks on Al₂O₃/ZnO layers demonstrating the first GaN films grown on Al₂O₃/ZnO. X-ray photoelectron spectroscopy showed a decrese in Zn diffusion into the epilayer, demonstrating that an ALD Al₂O₃layer was a promising transition layer for GaN growth on ZnO substrates by MOCVD.

This dissertation examines classroom conversations involving refugee and immigrant youth in a second language (L2) introduction program, exploring how L2 Swedish emerges as a multiparty accomplishment by both the teacher and the students. Drawing on forty hours of video-recorded Swedish L2 classroom conversations, as well as on observations and informal interviews, it focuses on talk as a form of social action. Theoretically and methodologically, the dissertation primarily combines insights from language socialization and social constructionist frameworks and detailed transcriptions informed by conversation analysis. Study I documents how schooled Swedish as a second language (SSL) student identities emerged as performative effects of how the students in school activities were addressed as “ethnic” students, and how they managed to handle, adopt, and contest being positioned as the Other. Study II records classroom performances and the formation of a community of practice. The analyses cover how students’ verbal improvisations (repetitions, stylizations, and laughter) and alignments to local registers authenticate SSL identities. The findings show how stylizations were important resources for metalinguistic reflections on correctness, and for the establishment of a local language ideology. Study III documents the interactional nature of classroom repair work. Detailed analyses of correction sequences and trajectories show that both the teacher and the students produced ambiguous other-corrections, illuminating the intricate multiparty work in correction trajectories. In brief, this dissertation illuminates multiparty aspects of classroom L2 socialization. The analyses of classroom talk show how both teacher and student investments in language competencies and local ideologies of correct Swedish or style, as well as participation and identity work, are co-constructed through participants’ tailoring of talk. / <p>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Manuscript. Paper 3: Accepted.</p>

Ce travail tente d’approfondir la recherche et de systématiser les courants théoriques concernant l’utilisation des outils TIC dans la classe d’espagnol langue étrangère et ce, avec une emphase sur la technologie Web 2.0. Bien que plusieurs enseignants soient déjà conscients de l’importance de ces technologies, une grande majorité de la littérature sur le sujet se trouve dans une bibliographie mineure ou encore dispersée sur l’ensemble des portaux Web. En ce début de millénaire, le concept de Web 2.0, au même titre que l’avancement technologique, transforme le processus d’enseignement et la participation en éducation. Nous analyserons donc les répercutions de cette technologie dans le domaine de l’enseignement de l’espagnol et comment, en l’utilisant adéquatement, obtenir un programme d’apprentissage plus attractif et effectif autant à l’intérieur qu’à l’extérieur de la salle de cours. Finalement, nos propositions théoriques sont accompagnées d’études de cas précis où le recours à l’électronique a été utilisé tel que ce qui se trouve actuellement en ELE. Ainsi nous tentons de démontrer la pertinence de tout le corpus que nous avons développé. En épilogue sont offertes de brèves notes sur le panoramique décrit et celle prévue pour l’enseignement de l’espagnol à l’aide des TIC actuelles. / This work tries to investigate and to systematize the theoretical currents of ICT resources in Spanish foreign language classes, with emphasis on Web technology 2.0. Though many teachers are conscious of the relevancy of the topic, the majority of its literature can be seen in minor bibliographies or in a set of Web portals increasingly dispersed. As the technology advances, the concept of Web 2.0 is transforming the participants as well as the process of education of this current age. We analyze how this conception reverberates in the teaching of Spanish, in order to achieve a more attractive and effective method of learning whether inside or outside the classroom. Finally, we accompany our theoretical proposals of the study regarding precise cases with electronic resources that are in use nowadays in SSL. Using this method, we are able to verify the relevancy of the whole corpus that we have developed. In addition, we offer brief notes of the described panorama as well as foreseeable future regarding the education of Spanish from the current ICT tools. / La bibliographie comprends des adresses web consultables en ligne