Automated test generation for Andriod apps with reinforcement learning algorithms often produce test suites with redundant coverage. We looked at minimizing test suites that have already been generated based on state–action–reward–state–action (SARSA) algorithms. In this dissertation, we hypothesize that there is room for improvement by introducing novel hybrid approaches that combine SARSA-generated test suites with greedy reduction algorithms following the principle of HGS (Harrold Gupta Soffa) approach. In addition, we apply an empirical study on Android test suites that reveals the value of these new hybrid methods. Our novel approaches focus on postprocessing test suites by applying greedy reduction algorithms. To reduce Android test suites, we utilize different coverage criteria including event-based criterion (EBC), element-based criterion (ELBC), and combinatorial-based sequences criteria (CBSC) that follow the principle of combinatorial testing to generate sequences of events and elements. The proposed criteria effectively decreased the test suites generated by SARSA and revealed a high performance in maintaining code coverage. These findings suggest that test suite reduction using these criteria is particularly well suited for SARSA-generated test suites of Android apps.

Diploma thesis focuses on modern trends in marketing communication of specific educational institution. Main goal of the thesis is to analyse and to design of a mobile application for Faculty of Management University of Economics in Prague as a new tool of marketing communication intended for candidates interested in studying and potential students. Theoretical part of the thesis includes general topics about strategic university management of Universities, marketing communication and relations management. Author also presents the mobile application as a product, its applicability, ways of its distribution and necessary steps for its analysis and design.

Diploma thesis is focused on the design of mobile application used in project management and projects portfolio management. The design was created based on the results of analysis of the mobile applications for PM and PPM. The analysis was developed in two steps and its parameters are based on the information provided in the theoretical part. Results of the analysis were used for creating a design of the mobile application, which consists of three basic parts - design functionality, user interface and technical background. The final design was verified by experts to confirm its practical benefits and uses.

The aim of this diploma thesis is to create a mobile application that provides the users with structured, well-arranged and at the same time effective platform to share, present and practice the knowledge of various kinds. The work analyzes several existing applications and systems for education and sharing information and describes different approaches of mobile app development with the focus on multiplatformity. The main part of the work describes the gradual development of the application and documents the created format for the presentation and sharing of study materials, with the possibility of practical practice of the acquired knowledge. The result of this diploma thesis is a mobile application, which is available on the Google Play Store.

This thesis aims to to see if its possible to meet some of the complex needs of people with ADHD, in the form of aiding them with remembering to complete tasks and chores. Current studies have mainly focused on either assessing or treating ADHD rather than looking at aiding people already diagnosed. In order to evaluate if the needs can be met the participants of the paper are first interviewed to determine some of the needs. A mobile application was then developed based on the data collected from the interviews and later evaluated by the participants in a second round of interviews. The result of this paper showed that these complex needs can be met, in this paper the needs managed to be met with the use of mobile notifications that server as reminders and also by letting the participants prioritize the importance of the task. However the application did not fully suit all participants and had some shortcomings which could lead to further research that looks at trying to meet more of these needs, either by continued development of the application or by mapping out what the needs are.

Today smartphones and mobile applications are a part of our everyday life and information has become more accessible then ever before. The notion of sustainability was established in 1987 and is just as relevant now as then. Sustainable Interaction Design is still today a rather unexplored area, nonetheless important to examine. The purpose of this thesis is to study how mobile applications can help and encourage users toa more sustainable lifestyle. Further more we wanted to look into the awareness of people and their willingness to change their everyday life. By choosing two different mobile applications with a focus on environmental questions we have analyzed how users are allowed to be affected. The result is also based on one survey and one focus group. The resultis interpreted based on previous research by Jeffrey Bardzell and Shaowen Bardzell, Elina Eriksson and Daniel Pargman, Maria Normark and Jacob Tholander with theories around Critical Design, Vanilla Sustainability and Perfomative Design. Our conclusion is that mobile applications can help users to a more sustainable living. For users to be encouraged and affected we have defined som key factors. Pleasing aesthetics and structure are required, the information published should not be ambiguous, but clear and accurate, and the behaviour that is encouraged should benefit the user. In addition we have discovered a connection between awareness and the willingness to change. / Smarta telefoner och mobilapplikationer är idag en del av vår vardag och information harblivit mer lättillängligt än någonsin. Begreppet hållbarhet definierades år 1987 och är likaaktuellt då som nu. Hållbar interaktionsdesign är idag ett relativt outtforskat område och somär, möjligtvis just därför, viktigt att undersöka.Syftet med denna studie är att undersöka hur mobilapplikationer kan hjälpa och uppmuntraanvändare till en mer hållbar livsstil. Samtidigt ville vi undersöka medvetenheten och viljantill förändring hos människor i vardagen när det kommer till hållbara val.Vi har valt ut två applikationer med miljöfokus och med hjälp av dem har vi analyserat huranvändare blir påverkade av miljörelaterade frågor. Resultatet är även baserat på enenkätundersökning och en fokusgruppstudie. Vi har tolkat resultatet utifrån tidigare forskningav Jeffrey Bardzell och Shaowen Bardzell, Elina Eriksson och Daniel Pargman samt MariaNormark och Jacob Tholander med teorier kring kritisk design, vanillasustainability och perfomative design. Vi har kommit fram till att mobilapplikationer kanhjälpa användare till en mer hållbar livsstil. Vi har definierad några viktiga faktorer för attanvändare ska bli påverkade och uppmuntrade. En tilltalande estetik och struktur krävs,informationen som ges ut bör inte vara tvetydig utan klar och korrekt samt att denbeteendeförändring som uppmuntras gärna ska gynna användaren själv. Vi har även funnit enkoppling mellan medvetenhet och förändringsvilja.

在現在的社會裡，手機應用程式已經被人們接受與廣泛地利用，然而目前市面上的手機 App 推薦系統，多以使用者實際使用與回報作為參考，若有惡意行為軟體，在使用者介面後竊取使用者資料，這些推薦系統是難以查知其行為的，因此我們提出了 AppReco，一套可以系統化的推薦 iOS App 的推薦系統，而且不需要使用者去實際操作、執行 App。 整個分析流程包括三個步驟：(1) 透過無監督式學習法的隱含狄利克雷分布(Latent Dirichlet Allocation, LDA)做出主題模型，再使用增長層級式自我組織映射圖(Growing Hierarchical Self-Organizing Map, GHSOM)進行分群。(2)使用靜態分析程式碼，去找出其應用程式所執行的行為。(3)透過我們的評分公式對於這些 App，進行評分。 在分群 App 方面，AppReco 使用這些應用程式的官方敘述來進行分群，讓擁有類似屬性的手機應用程式群聚在一起；在檢視 App 方面，AppReco 透過靜態分析這些 App 的程式碼，來計算其使用行為的多寡；在推薦 App 方面，AppReco 分析類似屬性的 App 與其執行的行為，最後推薦使用者使用較少敏感行為(如使用廣告、使用個人資料、使用社群軟體開發包等)的 App。 而本研究使用在 Apple App Store 上面數千個在各個類別中的前兩百名 App 做為我們的實驗資料集來進行實驗。 / Mobile applications have been widely used in life and become dominant software applications nowadays. However there are lack of systematic recommendation systems that can be leveraged in advance without users’ evaluations. We present AppReco, a systematic recommendation system of iOS mobile applications that can evaluate mobile applications without executions. AppReco evaluates apps that have similar interests with static binary analysis, revealing their behaviors according to the embedded functions in the executable. The analysis consists of three stages: (1) unsupervised learning on app descriptions with Latent Dirichlet Allocation for topic discovery and Growing Hierarchical Self-organizing Maps for hierarchical clustering, (2) static binary analysis on executables to discover embedded system calls and (3) ranking common-topic applications from their matched behavior patterns. To find apps that have similar interests, AppReco discovers (unsupervised) topics in official descriptions and clusters apps that have common topics as similar-interest apps. To evaluate apps, AppReco adopts static binary analysis on their executables to count invoked system calls and reveal embedded functions. To recommend apps, AppReco analyzes similar-interest apps with their behaviors of executables, and recommend apps that have less sensitive behaviors such as commercial advertisements, privacy information access, and internet connections, to users. We report our analysis against thousands of iOS apps in the Apple app store including most of the listed top 200 applications in each category.

This Bachelor thesis is about digital tools for event organisers. The platforms offered by companies serve as digital backchannels that among other things facilitate interactions between audience and stage, for example during live Q&A sessions. This work focuses on the tasks and challenges of moderators on site and aims to develop a system that will optimise their workflows. Therefore, a tool is developed that allows moderators to conduct a Q&A session independently without having to rely on the assistance of an event organiser operating a desktop based platform simultaneously. The analysis addresses the moderator's role and tasks. It turns out that the functions of the platform relevant to the moderator can be combined in a mobile interface that is linked to it. Using a semi- structured expert interview, the feedback from clients of the start-up "Happenn" is gathered, which use the already existing platform of the company. Their platform "Happenn Live" serves as case study for this thesis. On the basis of the findings of the methods adapted to Lean UX, a solution approach in the form of a redesign of the platform and a corresponding mobile application for moderators is conceptualised. The structure and visual design of the platform follows the general design standards for desktop- and mobile-based interfaces. In this way, an improved usability can be achieved by making the platform more user-friendly for the user.

Syftet med arbetet var att utvärdera mobilapplikationen KATAM avseende noggrannhet, tidsåtgång, precision och praktisk användning i jämförelse med volymuppskattning med dataklave och skördarrapport. Resultatet vid diameterjämförelsen visar på snarlika uppskattningar från KATAM respektive dataklaven. KATAM hade högre medelgrundyta, 7 % och grövre medeldiameter, 3,7 %, i jämförelse med dataklaven. KATAM hade även överskattningar av medelstammen volym i jämförelse med skördarrapporten och dataklaven, från 2,5 % till 17,6 % beroende på vilket urval av provytor och vilken programversion av KATAM som användes. Underlaget från volymuppskattningar var litet och hade felkällor vilket gjorde resultaten från mätningarna osäkra. Trots att studien visade på en överskattning av diametern talar den inbördes precisionen för att KATAM skulle kunna bli ett alternativ till Dataklaven vid uppskattning av medeldiametern. / The purpose of this essay was to evaluate the mobile application KATAM of accuracy, time, precision and practical use in comparison to volume estimation with data Digital Caliper and harvester report. The result of the diameter comparison showed similar estimates from KATAM and the Digital Caliper respectively. KATAM had a higher mean basel area, 7% and coarser mean diameter, 3.7%, compared to the Digital Caliper. KATAM also had overestimations in volume as compared to the harvesting report and the Digital Caliper concerning the mean stem, from 2.5% to 17.6%, depending on which sample areas were included and which version of KATAM was used. However, the basis of volume estimates was small and had error sources, which made the results of the measurements uncertain. Although the study shows an overestimation of the diameter, the mutual precision indicates that KATAM could be an alternative to the Digital Caliper when estimating the mean diameter.

When making new software systems, security testing should always be included in the process. In this thesis, attacks were identified and performed against a system consisting of two servers and an Android application. A penetration test was also performed against parts of the system. If an attack was successful, this was considered a vulnerability. The attacks that were identified and performed were a NoSQL injection attack a man-in-the-middle attack and reverse engineering. Through the man-in-the-middle attack and reverse engineering, breaching security properties such as confidentiality and integrity was possible. The NoSQL injection attack was not successful in breaching neither. No results from these could be used to exploit the system further. Countermeasures were taken to secure against the discovered vulnerabilities, and new instances of the attacks were performed after this as well. The overall conclusion is that the system is now secure against our implementations of the attacks performed in this thesis.