Main goal of this thesis is implementation of a simple video editing application for Android platform. In the theoretical part are described present-day possibilities of video editing on computers and mentioned also existing applications for Android. Then the platform itself and its features are described with focus to development of applications, especially native ones. The FFmpeg library for multimedia processing is described next. It was used in implementation of application. The next part of thesis considers with implemented application and describes its design, structure, user interface and process of implementation. Then the results of video processing performance tests and their evaluation are presented. In the end is the application compared with similar existing applications.

This thesis is focused on obtaining data from a car via the OBDII interface. A successive analysis of the measured values, car sensors, control systems and communication principles between them is done. Basic principles for creating Android mobile applications have been also summarized here. However, the main focus is on designing an application which uses a microcontroller ELM327 to communicate with the electronic systems of a real car. The application shows the obtained data in a form that enables the driver to improve his/her driving habits in terms of fuel economy. The application also demonstrates communication with a car outside of the OBDII standard, in this scenario, by controlling a built-in radio in the car.

abstract: The Java programing language was implemented in such a way as to limit the amount of possible ways that a program written in Java could be exploited. Unfortunately, all of the protections and safeguards put in place for Java can be circumvented if a program created in Java utilizes internal or external libraries that were created in a separate, insecure language such as C or C++. A secure Java program can then be made insecure and susceptible to even classic vulnerabilities such as stack overflows, string format attacks, and heap overflows and corruption. Through the internal or external libraries included in the Java program, an attacker could potentially hijack the execution flow of the program. Once the Attacker has control of where and how the program executes, the attacker can spread their influence to the rest of the system. However, since these classic vulnerabilities are known weaknesses, special types of protections have been added to the compilers which create the executable code and the systems that run them. The most common forms of protection include Address SpaceLayout Randomization (ASLR), Non-eXecutable stack (NX Stack), and stack cookies or canaries. Of course, these protections and their implementations vary depending on the system. I intend to look specifically at the Android operating system which is used in the daily lives of a significant portion of the planet. Most Android applications execute in a Java context and leave little room for exploitability, however, there are also many applications which utilize external libraries to handle more computationally intensive tasks. The goal of this thesis is to take a closer look at such applications and the protections surrounding them, especially how the default system protections as mentioned above are implemented and applied to the vulnerable external libraries. However, this is only half of the problem. The attacker must get their payload inside of the application in the first place. Since it is necessary to understand how this is occurring, I will also be exploring how the Android operating system gives outside information to applications and how developers have chosen to use that information. / Dissertation/Thesis / Masters Thesis Computer Science 2020

Presented master thesis is dedicated to creation of DEECo component model supported on Android platform. Enabling distributed system of inter-connected devices to run DEECo framework. For this purpose jDEECo implementation of DEECo component model is ported to Android platform and synchronization solution creating common state is done on top of JGroups toolkit. Possible solutions are presented and implementation of created solution is described. At last demo application showing usage of created framework was developed and evaluated.

Goal of this thesis is to create an online service, suitable for approximation of user's position inside a building via his mobile device. For this goal a known network of Wi-Fi access-points was used in combination with a machine learning algorithms. Algorithms were trained and tested on the ground floor in building Q of Mendel University in Brno. The Algorithms and the online service were tested with automated tests as well as in real environment with a mobile application, which was also created as a part of this thesis. Results have shown that reliability and accuracy of service is highly dependent on localized mobile device. Success rate floated between 43~\% and 66~\%, depending on a mobile device.

Koucký, P. Multiplatform web application - Diary of Hunter. Diploma thesis. Brno, 2017. This diploma thesis focuses on the responsibility and competency of the hunter in his shooting and describes modern cloud technologies and their use. Based on acquired knowledge implements the application for web and mobile platform dedicated to hunters. Designed and implemented application is evaluated in terms of its own design and the technologies used. It also suggest options for further development.

This thesis deals with a design and an implementation of object recognition method. The recognition method focuses on an object from a preview of mobile device's camera. The method modifies this object in real time and it is used in an augmented reality application.

The importance of a smooth user experience in applications is increasing. To achieve more performance when interacting with resource intensive data it is important to implement an efficient caching method. The goal of this thesis is to investigate how to implement an efficient cache in an Android application. The use case is to download metadata and images of movies from a WebAPI provided by June AB. In order to investigate which caching method is the most efficient, a pre-study was done on some of the most common caching methods today. Based on the results of the pre-study, two different caching algorithms were tested and evaluated: First-In First-Out (FIFO) and Least Recently Used (LRU). These two algorithms were then implemented in an Android application. The resulting prototype has a responsive user interface capable of caching large amounts of data without noticeable performance loss compared to a non-cached version. The results from the prototype showed that LRU is the better strategy in our use case, however what we discovered was that the buffer size of the cache has the biggest impact on performance, not the cache eviction strategy. / Vikten av en snabb användarupplevelse ökar i nya applikationer. För att få ut mer prestanda när användare interagerar med resurstung data är det viktigt att implementera en effektiv cachingsmetod. Målet med arbetet är att undersöka hur man implementerar en effektiv cache i en Android-applikation. Användarfallet är att ladda ner metadata och bilder på filmer från ett WebAPI som tillhandahölls av June AB. För att undersöka vilken cachingsmetod som är effektivast gjordes en förstudie på några av de mest vanliga cachingsmetoderna idag. Baserat på förstudiens resultat valdes två cachingsalgoritmer för testning och utvärdering: First-In First-Out (FIFO) och Least Recently Used (LRU). Dessa två algoritmer implementerades i en Android-applikation Prototypen som gjordes har ett responsivt användargränsnitt som kan cacha stora mängder data utan märkbar prestandaförlust jämfört med en icke-cachad version. Prototypen visade att LRU är den bättre strategin för vårt användarfall, men upptäckte att bufferstorleken på cachen har den största påverkan av prestandan, inte cachestrategin.

The eerie feeling attributed to human-looking robots and animated characters may be a key factor in our perceptual and cognitive discrimination between the human and the merely humanlike. This study applies factor analysis, correlation, the generalized linear model (GLM), multidimensional scaling (MDS), and kernel isometric mapping (ISOMAP) to analyze ratings of 27 emotions of 16 moving figures whose appearance varies along a human likeness continuum. The results indicate (1) Attributions of eerie and creepy better capture human visceral reaction to an uncanny robot than strange. (2) Eeriness and creepiness are mainly associated with fear but also shocked, disgusted, and nervous. Strange and humanlike are less strongly associated with emotion. (3) Thus, strange and humanlike may be more cognitive, while eerie and creepy are more perceptual and emotional. (4) Human and facial features increase ratings of human likeness. (5) Women are slightly more sensitive to eerie and creepy than men; and older people may be more willing to attribute human likeness to a robot despite its eeriness.

Detta arbete förklarar funktionaliteten bakom Google Cast-teknologi och ger en inblick i de komponenter som krävs för att utveckla en media-applikation i Androidmiljö med stöd för Google Cast. Google Cast-teknologin tillåter media-användare att fjärrspela angiven media mot en så kallad Chromecast-mottagare. Median kan strömmas från en annan enhet som kan vara en telefon, dator eller surfplatta. Projektet tillhandahölls av företaget BookBeat vars kunder under en längre tid önskat stöd för Google Cast i företagets Androidapplikation. Målet med projektet var att utveckla en radioapplikation i en Androidmiljö, med stöd för Google Cast. Syftet med målet var att förstå hur konceptet fungerar och att utforma en exempelapplikation som BookBeat skulle kunna använda som referens i deras framtida implementation av Google Cast. Målet blev uppfyllt och förhoppningen är att exemplet kan komma att användas av BookBeat. / The purpose of this essay is to explain the functionality behind the Google Cast technology and give insight into the different components that a media application in an Android environment with Google Cast support requires. Google Cast technology allows media consumers to remotely play arbitrary media against a so-called Chromecast receiver, from a different device, which can be a phone, computer, or surf pad. The company BookBeat assigned the project, whose customers have been asking for Google Cast support in the companies Android application for a while. The goal of the project was to develop a radio application in an Android environment with Google Cast support. The purpose of the goal was to gain insight into how the concept worked and to develop an example application that BookBeat would be able to use as a reference in their future implementation of Google Cast. The goal was achieved, and the hope is that this example will be of use for BookBeat.