Journal of Computer Sciences Institute

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.