Dragica Radosav

Realization business intelligence in commerce using Microsoft Business Intelligence

Business intelligence today covers the elements of information technology, accounting management, business analysis and marketing. It enables collection, analysis, distribution and acting based on the business information and for the purpose of easier solving of management problems and making of best business decisions. So, business intelligence system originally intended for the decision makers even though in todaypsilas modern conditions of new economies decisions are made by majority of the managers in the company. SQL server 2008 and Visual Studio 2005 together offer deeper integration between the data base in the application development then ever before. Programmers now have the possibility to create a CLR stored procedure, function and user defined types directly from Visual Studio development environment. Other then that, Visual Studio 2005 supports all new SQL Server data types. Business Intelligence with Office Share Point Server 2007 system facilitate to people who make decisions to access information and analyze them at any time, anywhere. Managers in the trading company can use updated information wherever people are working, cooperate and make decisions regardless whether this is on desktop or via Web.

Analysis of basketball games using neural networks

Data mining is a technology in data analysis with rising application in sports. Basketball is one of most popular sports. Due to its dynamics, a large number of events happen during a game. Basketball statisticians have task to note as many of these events as possible, in order to provide their analysis. In this paper, we used data from the First B basketball league for men in Serbia, for seasons 2005/06, 2006/07, 2007/08, 2008/09 and 2009/2010. During these five seasons, total of 890 games were played. Data were collected for individual players, so it was necessary to adapt these in order to show statistics for a whole team. These data were analyzed using feedforward technique in neural networks, which is the most often used technique in analyzing nonlinear sports data. As a final result, we concluded that the most important elements in basketball are two-point shots under the hoop and defensive rebound, i.e. game “in paint”.

Adolescents' informal computer usage and their expectations of ICT in teaching - Case study

This paper presents research with the basic goal of establishing the structure of informal computer use among adolescents in the Republic of Serbia, and of verifying the existence of a statistically significant correlation between this and their expectations regarding the implementation of ICT in the teaching process. This research was conducted by examining the opinions of 14-18 year-old adolescents regarding their computer use, Internet and social networks, and their expectations related to ICT in teaching. The results were obtained from 318 questionnaires consisting of 32 questions distributed among a representative, focused sample of adolescents: seventh and eighth grade primary, grammar and high school pupils in the Republic of Serbia. The research was carried out during the 2013/2014 school year. Data processing included a descriptive and correlative analysis which showed that Serbian adolescents are very active when it comes to informal computer use, and that there is a statistically significant correlation between the dimensions of computer use among adolescents and their expectations regarding ICT in teaching. The obtained results provide a foundation for the prediction of educational strategies regarding mandatory ICT integration in teaching courses, and the implementation of ICT in realizing teaching content. Basic goal was establishing the structure of informal computer use among adolescents.We examined adolescents expectations regarding ICT use in the teaching.Participants were recruited from primary, vocational and grammar schools in Serbia.Data processing included a descriptive and correlative analysis.ICT usage has an influence on expectations regarding ICT use in teaching.

Computer adaptive testing for student's knowledge in C++ exam

In adaptive learning systems for distance learning attention is focused on adjusting the learning material to the needs of the individual. Adaptive tests adjust to the current level of knowledge of the examinee and is specific for their needs, thus it is much better at evaluating the knowledge of each individual. The basic goal of adaptive computer tests is to ensure the examinee questions that are challenging enough for them but not too difficult, which would lead to frustration and confusion. The aim of this paper is to present a computer adaptive test (CAT) realized in MATLAB.

Teaching Computer Science in a web-based environment

Programming is a major subject in Computer Science (CS) departments. However, students often face difficulties on the basic programming courses due to several factors that cause these difficulties. Maybe the most important reason is the lack of problem solving abilities that many students show. This paper describes the web-based environment Pex4Fun from Microsoft Research for teaching computer science. Pex4Fun can be used to teach and learn computer programming at many levels, from high school all the way through graduate courses. Pex4Fun was experimentally used for learning Visual Basic with college students, the results of which are presented in this paper.

Extending the learning object metadata with “recommended” parameters

In this work the authors suggest the introduction of two new parameters apart from the existing ones in the metadata system. In the reusability process when choosing from learning object repository in order to use it in ones own work it may be useful to have some data regarding how that particular learning object was evaluated by other users.

Guidelines on accessible web portal design

WWW (World Wide Web) as a basic internet service has an important role in almost every aspect of life. The goal of the message sent from one Web page is to attract temporary and future clients i.e. visitors, and to inform them about products, services and to stimulate them to buy and use them. Therefore, the authors of Web pages have to consider different abilities possibilities and conditions of using. Each attempt which makes accessibility easier is useful for people with disabilities. The authors of these paper present guidelines which should be considered in web portals design, in order to make them accessible to people with disabilities. The problem of adjustment of web pages to people with disabilities is analyzed in more details

Computer adaptive tests: A comparative study

Computer based tests are becoming increasingly important and are thus implemented in all fields of education. The clear advantage of computer adaptive testing is witnessed by the maximal balance of accuracy and efficiency. For purposes of determining the effects of applying the computer adaptive test for knowledge evaluation, the adaptive test was realized in the MATLAB software package. The research was done at Subotica Tech - College of Applied Sciences (Subotica, Serbia) with students from the Department of Informatics. The MATLAB application was compared with two computer adaptive tests with a similar purpose: testing students knowledge of programming languages. The comparison was done for the four basic components that every computer adaptive test has to have: item bank, starting point, item selection algorithm and stopping rule.

COMPARISON OF EXAMINATION METHODS BASED ON MULTIPLE-CHOICE QUESTIONS USING PERSONAL COMPUTERS AND PAPER-BASED TESTING

Computer-based testing, by facilitating the interaction between teaching and learning, can improve the quality of learning through improved formative feedback which is a key aspect of formative assessment. This study makes a contribution to the research on computer-based testing by examining the mode differences between the paper-and-pencil test and computer-based test. The previously conducted researches in this area dealt with the students of primary and secondary schools. In those researches the points of observation were the students’ successes in mathematics, English and social sciences; no research was done in field of programming languages such as C++ with post-secondary students. The main aim of this study was to find out whether there are differences in the achieved results in two ways of testing: computer-based testing and paper-and-pencil test. Also, the intention was to detect those characteristics of computer based test, which may have a negative effect on students’ achievements. The participants were a representative sample of the population of all engineering students studying computer science at Subotica Tech. The findings of this study led the authors to reach the conclusion that there are no significant differences in scored results for the paper-and-pencil testing and the computer-based testing.

Managers' roles in web content management system

Modern education demands the usage of modern methods of education. Students’ lifestyle and learning largely depends on information obtained by using the internet and social networks. Managing this information represents a very complex process. In this paper, the roles of managers in learning management system will be presented. Also, the research results of applying WBMS developed at Technical Faculty “Mihajlo Pupin” and its effects will be presented as well. The paper’s contribution is in comparative analysis of the research results obtained in 2005 and in 2011.