A Business Intelligence Tool for Studing Value Co-creation and Innovation
S. Tanev, P. Ruskov, L. Georgiev, T. Bailetti
Key Words:
Value co-creation; open innovation; principal component analysis; linear regression analysis; emperical study; business intelligence tool.
Abstract:
Value co-creation is an emerging marketing and innovation paradigm describing a broader opening of the firm to its customers by providing them with the opportunity to become active participants in the design and development of personalized products, services and experiences. However, there is not yet fully satisfactory theoretical vision about its distinctive characteristics as compared to more traditional value creation approaches. One of the challenges in studying value co-creation is the lack of business intelligence (Bl) tools that can be used in the conceptualization of value co-creation practices. The present paper provides a preliminary vision for the development of such a BL tool and a first implementation that uses emperical research results in answering two research questions. The first question is: What are the principal components of value co-creation? The second question is: What is the relationship between the degree of firms' involvement in value co-creation activities and their innovativeness?

A Computer-Based Technology for Proccesing and Visualization of Session's Data
I. Zheliazkova, P. Valkova, G. Georgiev
Key Words:
Computer-based technology; experiment; test; task; exercise; session's data; processing; visualization.
Abstract:
Student, teacher and course evaluation are recognised as mutually connected decision making problems based on criteria involving multiple and possibly conflicting indicators. The paer justifies the need of such evaluation. a natural experiment is described. The experiment was divided into two sessions respectively for pretest and test-like exercise. A computer-based subject-independent technology for processing and visualization of session's data is described. Then, the descriptive statistics, correlation, regression, and cluster analysis are applied for some decision making problems.

Simulation Analyzes of System Characteristics and Parametres for Multithreading Processors
T. Marinov, M. Marinova
Key Words:
Computer systems; Multithreaded processors; Thread-level parallelism; Computer simulation analysis.
Abstract:
The paper describes an attempt to evaluate the impact on overall processor performance of some of the important parameters in multithreading processing. The performance improvement is analysed through simulation technique and the influence of number of threads, number of processors in multi-core environment and pipeline efficiency is presented in tables and figures. Some conclusions on the possibility to reach better performance are made, based on the presented results.

Pattern Classification in a Noisy Environment
M. Mladenov
Key Words:
Classification; nisy environment; class area approximation; radial basis elements.
Abstract:
This paper is focused on the classification of multidimensional patterns in classes located in a noisy environment using approximation of the class areas through radial basis elements. Different variants of class area approximation are proposed and investigated. An approach for classification in overlapping classes is discussed. It is based on the class areas approximation taking into account the class potentials. A variant of classifier validation, which uses noisy vectors in validating sets is investigated. The classifiers are trained and tested with simulated data and experimental data, related to the recognition of color characteristics of grain sample elements. The results obtained by classifiers proposed and classifier with standard radial basis functions and Bayesian classifier are compared.

Inverted Pendulum Control: an Overview
K. Perev
Key Words:
Cart - pendulum system; inverted pendulum; swing up control; local stabilization.
Abstract:
This paper considers the problem of inverted pendulum control. Position control of the inverted pendulum in upright equilibrium state can be divided into two tasks: swing up control of the pendulum in upright position and local stabilization around the equilibrium point. Two main approaches for solving the first problem are presented: the energy approach and the speed gradient approach. At the same time, many modern methods for control of the inverted pendulum are also introduced. The presented methods solve the inverted pendulum swing up problem and ensure its global stabilization.

On the Measurement of Quantity of Information on Speech, Sound and Image and their Link with the Information Processing
K. Boyanov
Key Words:
Speech; sound; image.
Abstract:
The speed of information transfer and processing becomes more and more important. One of the main tasks, following the information processing is the rationalization of the results or acceptance of decisions and conclusions. The research so far shows that the possibility of existence of civilization, similar to ours is minimal. This means that the chances for information exchange, so important for mankind actions are also minimal. This implies that new serious research can be carried out on the issues of maximum speed on information transfer, minimal time for its processing and the correlation between them.