Nikolai Scerbakov

WBT-Master - Modern Learning Management System

An effective learning management system (LMS) is a vital component of an overall E-Learning infrastructure in universities nowadays. Learning Management System can be seen as a structured repository of courseware materials provided with additional communication facilities such as discussion forum, annotations, chats, etc. In this paper, we present innovative features of a modern LMS called WBT-Master. These features actually justify the development of yet another LMS.

Quantitative Evaluation of University Lecturing

In this paper we present a method for evaluating the quality of university lectures. The method is based on an analysis of students’ behavior during working with online materials after visiting the classroom lectures or viewing prerecorded lectures. The students’ behavior is monitored via analysis of Log files, and via special extensions of e-book readers and online movie viewers. All the data are recorded on a web site. The gathered data is analyzed to draw conclusions about the quality of lecturing.

Plagiarism detection in SQL student assignments

An original method for plagiarism detection in SQL student assignments has been proposed. The method is based on identifying so-called “SQL lexemes” - persistent elements of an SQL statement, and “SQL variables” - easily modifiable elements of SQL statements. Thus, any SQL statements can be replaced with a so-called token - sequence of SQL lexemes and SQL variables. Distance between SQL tokens can be calculated using such a well-known algorithm as Levenshtein Metric. Small values of Levenshtein distance between tokens detect such SQL statements that were built by modifications of others.