Journal of Computer Sciences Institute

308-310

Authors: Grzegorz Iwaniuk

With the development of mobile device technology, the need to protect these devices from unauthorized access is increasing. Currently, there are common methods of unlocking devices whose operation consists in reading the pattern or the password entered by the user. The article presents the creation of an original method of screen protection of a mobile device and its comparison with commonly used screen locking methods.

318-323

Authors: Michał Bartkiewicz, Adrian Dziedzic

Article shows analysis of Xamarin technology in two modes: Xamarin Forms and Xamarin Native, used for developing applications for mobile devices with Android system. Comparison concerns the number of generated lines of code, performance of each part and size of installed application and size of apk installation file. Analysis was based on two identical applications created using both approaches. As a result of the analysis the more efficient approach for given purpose has been indicated.

328-333

Authors: Mateusz Magier, Beata Pańczyk

This article contains comparative analysis of selected Front-End Code Playground tools. The included tables were performed on the results of tests of the considered applications and the analysis of their documentation. The comparison was made for several criteria (including: features of code editors, custom modes of creating projects, support for preprocessors and project export methods). The conclusions drawn from the comparison allowed dividing the considered tools into three groups (applications with: high, moderate and low level of advancement).

340-344

Authors: Mateusz Erbel, Piotr Kopniak

The article discusses the issue of the security of Internet applications. The most popular types of attacks and methods of securing web applications against them are discussed. The study conducted the effectiveness of security of web applications. The research methodology was based on the proprietary application implemented in PHP technology. The result of the research is a proposal of solutions aimed at improving application security.

220-225

Authors: Tomasz Borysiewicz

Producer of Android operating system have been trying to offer ways to protect digital data on devices since 1st version of this platform. Development of possibilities of operating system and new technological solutions allows to launch more innovate protections, which are not only more secure, but also very comfortable in everyday usage. This article presents comparison of available solutions, both in terms of the best protection and convenience of usage. The topic of convenience of usage required research to collect information about the most popular configurations among users. The analysis of security level of available locks and obtained results allowed to verify whether owners of devices running Android operating system are properly securing digital data stored in internal memory of their devices.

230-234

Authors: Sofiia Lahoda, Marek Miłosz

The article presents the results of a study that will help for user to create a end-user parameters database using other web-sites as the primary source. The main goal of the work is making analysis to obtain information about the user of social networks. Next goal is analysis of the gathering data and the possibility of their use. The experiment was done using two methods of text analysis: parsing and scraping. The results are presented graphically and critical compared to each other.

241-246

Authors: Jacek Chmiel, Maria Skublewska-Paszkowska

This article presents time analysis of performance of Windows 10 and Windows 8.1. Presented research was mainly focused on performance comparison of mobile device system elements which are relevant from end user point of view like main processor, RAM and mass storage throughput, image generation speed by the graphics processor and access time to devices. In order to measure the performance of the above elements a mobile benchmark application was created. The hypotheses set in the article have been verified and partially confirmed.

252-257

Authors: Tomasz Paczuski, Beata Pańczyk

The aim of the article is to compare the tools for automating user interface tests on the example of Sikula and AutoIT. The conducted research has focused on the time of testing scripts, their complexity, ease of maintenance and reliability. For the purposes of the study, an application in C # was created and several representative automatic tests were written in each tool.

263-269

Authors: Grzegorz Dziewit, Jakub Korczyński, Maria Skublewska-Paszkowska

Comparison of efficiency is not a trivial phenomenon because of disparities between different database systems. This paper presents a methodology of comparing relational database systems in respect of mean time of execution individual DML queries containing subqueries and conjunction of tables. The presented methodology can be additionally accommodated to studies of efficiency in a range of database system itself (study of queries executed directly in database engine). The described methodology allows to receive statement telling which database system is better in comparison to another in dependency of functionalities fulfilled by external application. In the article the analysis of mean time of execution individual DML queries was performed.Two research hypotheses have been put forward: "Microsoft SQL Server database system needs less time to execute INSERT and UPDATE queries than Oracle database" and "Oracle database system needs less time to execute DML queries with binary data than SQL Server".

277-281

Authors: Krzysztof Lenart, Małgorzata Plechawska-Wójcik

The paper describes results of the possibility analysis of environmental monitoring and detection threats with the Arduino platform. Sensors compatible with Arduino enabling environmental monitoring were used to conduct research. The research consisted in monitoring environmental parameters, monitoring among others air temperature and humidity, sound level or gases harmful to health., Capabilities of the platform have been analyzed based on the obtained results.

286-291

Authors: Bartłomiej Karol Flis, Łukasz Kołyga, Maria Skublewska-Paszkowska

The article compares two modern integration platforms used in production and test environments. These are, a free integrity solution WSO2 data bus and OSB bus, called Oracle Service Bus, which is a commercial software. The tests that were carried out on the abovementioned buses and results were discussed. In addition, a comparison of results with conclusions that were drawn after the tests was attached.

298-301

Authors: Krzysztof Drążek, Maria Skublewska-Paszkowska

Automation tests are used for verification of functionality of developing applications. The performance of automation tests written in HP UFT and Selenium WebDriver was compared. There were created 3 tests for both technologies that were executing the same tasks. According to the obtained results, it was concluded which technology is a better choice if the time efficiency of tests execution is important.

108-115

Authors: Przemysław Mincewicz, Małgorzata Plechawska-Wójcik

The aim of this paper is verification of possibilities of Laravel PHP framework. An overview of literature is presented, which shows Laravel as a research tool in various scientific fields and compares it with other PHP language tools. The project of a test application was presented, which is a database of music albums with three datasets - one, two and five thousand albums. Laravel's Zend Framework and Symfony performance survey was based on, among other things, database loading time, database searches, and the time to generate a single album view with relationships. Summary of the information contained in the paper states that Laravel is an easy-to-use tool, with a number of app creation aids, but with performance outweighed by the frameworks compared to it, the most efficient of which is Zend Framework.

120-125

Authors: Kamil Bartosz Podkowiak, Damian Burak, Tomasz Szymczyk

This article deals with the comparison of two technologies for manipulating 3D objects in terms of ease of use, ergonomics and intuitiveness. The comparison was based on the results obtained from the outcome of test tasks and questionnaires performed on the group of 15 people. Detailed research and test scenarios and additional questionnaires have been made. Each of the respondents had the opportunity to familiarize themselves with the device by performing three tests in two test scenarios (one per device).

132-137

Authors: Cezary Cichocki

This article compares two open source platforms supports e-commerce, such as: Wordpress with Woocommerce plugin and Magento Community Edition. The paper shows pros and cons of both systems. The main functionalities of them were tested and showed. Based on research - conducted measuring the speed of web page load by using online tools such as Google PageSpeed Insights and system popularity analysis based on social media and Internet forums, conclusion were made.

142-149

Authors: Ewelina Piątkowska, Katarzyna Wąsik, Małgorzata Plechawska-Wójcik

The article presents the use of .NET Core in web applications development. The analysis covers tests performed on a test application based on the .NET Core framework. The following benchmarking criteria were selected for the framework analysis: pattern search in text, counting parsing time, rendering operations on graphical files, adding files to archives, CRUD operation speed. These criteria were compared on two different operating systems - Windows, Linux. Additionally, the paper presents results obtained after the tests and their analysis. The hypothesis that tests will be executed faster on Windows than on Linux has only been partially confirmed.

158-161

Authors: Oleksandr Chornyi, Marek Miłosz

This article presents the results of comparing code developing speeds and project loads across different frameworks to explore which of them seems to be the best choice in the long time. The analysis was carried out in terms of the exploratory study, the design of the sample project and the literature review. Comparison will make it possible to point to a better performance framework and prolong its use.

168-171

Authors: Oleh Datsko, Elżbieta Miłosz

Work with database is one of base things in developing an application. Every technology/language uses own ways to work with database. In the case of Android the SQLite relational database management system is used. Analysis applies the read, write and delete of items from the table. SQLite is like a minimized version of desktop database management system so for every experiment very limited elements count is used.

178-182

Authors: Krzysztof Pawelec

The goal of this article was to perform analysis of usability possibilities of frontend framework AngularJS compared to native programming language JavaScript, on which it is based on. Several framework funcionalities were chosen and set together with self implemented solutions in JavaScript. Comparison was made according to specified criteria: usage simplicity, possibilities of utilization and reusability. Created scripts confirm accepted assumptions, that in JavaScript it is possible to write simplified and reusable implementations of useful mechanisms, which are present in AngularJS.

191-194

Authors: Edyta Łukasik, Tomasz Zientarski

The aim of the article is to compare three programs for the optical text recognition. The problem of the optical text recognition has been defined. Next, briefly the functionality of this technology was described. The most important programs realizing the discussed problem were also characterized. The selected programs were tested using two samples of machine writing in Polish. The speed of the text recognition process was determined. The correctness of characters and words recognition in the analyzed text was also specified.

200-204

Authors: Mateusz Moczulski, Małgorzata Plechawska-Wójcik

The paper contains comparison between Angular and BackboneJS frameworks. For research purposes, two single page applications were created. Both providing the same functionalities. In this article such elements were examined and compared: time of loading elements, number lines of code, size of compiled application. community gathered around frameworks and time needed to create the application using frameworks. The obtained results did not indicate a solution that was clearly better to be used in single page applications.

210-214

Authors: Marek Miłosz, Janusz Gazda

Artificial neural networks are one of the tools of modern text recognising systems from images, including handwritten ones. The article presents the results of a computational experiment aimed at analyzing the quality of recognition of handwritten digits by two artificial neural networks (ANNs) with different architecture and parameters. The correctness indicator was used as the basic criterion for the quality of character recognition. In addition, the number of neurons and their layers and the ANNs learning time were analyzed. The Python language and the TensorFlow library were used to create the ANNs, and software for their learning and testing. Both ANNs were learned and tested using the same big sets of images of handwritten characters.

6-11

Authors: Bartosz Drawdzik, Maria Skublewska-Paszkowska

The paper presents the process of creating two application using two different methods of programming. One of them is simple PHP application based on data stored in a relational MySQL database and a application of the same functionality implemented on the Magento 1.9 platform. The main purpose of the paper is to test applications and verify them of the extent to which functionality is fault-tolerant. It means that tests will be the - individuals function and their resistance to errors. The obtained results allow the authors to evaluate which kind of programming is the best and improve clean code and it’s quality.

20-27

Authors: Dariusz Meksuła, Konrad Mikołajczyk, Małgorzata Plechawska-Wójcik, Magdalena Borys

The purpose of this article is to present the eye-tracking method in the context of evaluation of responsive web application dedicated to manage students practices. To determine usability of the application the eye-tracking method has been chosen due to its high objectivity. Using this method one can unequivocally determine the user gaze direction, which interface elements enchained his attention and which ones were completely skipped. As part of the work were prepared scenarios with tasks for the research participants, questionnaires and time of the tasks execution where measured. Collected data were presented as heat maps and scanpaths. The paper covers also actual review of bibliography of the eye-tracking area and detailed description of the eye-tracking method. What is more the paper gives description of test subject, conducted test and discusses results.

34-41

Authors: Piotr Król, Damian Marek, Jakub Smołka

This article discusses authentication methods for users of mobile devices with touchscreens. The analysis concerns the authentication methods already existing in Android OS and new authorization methods proposed by the authors. Pattern and PIN (Personal Identification Number) lock were compared with two new authentication methods. The time required for entering the key, number of mistakes, number of possible combinations were analyzed.

47-54

Authors: Rafał Szewczyk, Małgorzata Plechawska-Wójcik

The article presents a comparative analysis of selected skeletons for dependency injection in Java. The analysis consists in comparing the speed of the frameworks in different configurations. For each technology has been created a separate application, and the results are presented in graphs and tables.

59-61

Authors: Hlib Dikariev, Marek Miłosz

The article presents the results of analysis of the distributed registry technology called blockchain. The analysis was performed for the possibility of using the blockchain technology in different spheres of human activity.

68-72

Authors: Paweł Kotarski, Kacper Śledź, Jakub Smołka

Solutions that allow developers to create application for different mobile systems in which they can share whole source code or large parts of it are becoming more popular. This article compares the performance of Android-based mobile application created with the default and multiplatform tools. Authors on selected examples examine performance in various aspects of the application.

77-81

Authors: Kamil Litkowski, Jakub Smołka

Article discusses performance differences of emulators Android Emulator version 26.1.4 and BlueStacks App Player 3 and physical devices with Android platform. Performance is measured by the chess algorithm execution time. Article also describes previous research related to this subject. The article also presents the used research methods, results of research based on chess algorithms and conclusions.

87-91

Authors: Dawid Wieczorek, Jakub Smołka

The article examined whether applications written using the cross-platform application framework perform equally well as native solutions on selected operating systems. The Xamarin.Forms framework was tested against the native Android SDK and Universal Windows Platform frameworks for mobile systems Android and Windows 10 Mobile.

97-101

Authors: Paweł Borys, Beata Pańczyk

During web application development, working with a database and choosing appropriate tool for database managing is extremely important. This choice influences both final application and its development process. However there is a large number of possibilities of choosing the best tool to use in a project. It often provides some difficulties. The main goal of this paper is to present the advantages and disadvantages of three popular solutions for ASP.NET MVC platform (ADO.NET, Entity Framework, NHibernate) to help make the proper decision.