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Applied Computer Science Volume 10, Number 1, 2014

ICT IN HIGHER EDUCATION: AN EXPERIENCE WITH E-BOOKS

The present paper seeks to explain the diverse advantages of virtual books and also the main barriers that make it difficult their implementation in the classroom. A brief review of the literature on ICT, e-learning, distance education and e-books will be complemented with a case study about the preparation, development and implementation of an e-book. The paper could be helpful both for systems analysts and for teachers when they are developing and implementing e-books.

COMPUTER-AIDED ANALYSIS OF A NEW PROCESS FOR FLANGING HOLLOW PARTS

The paper presents a new process for flanging hollow parts. This process is performed using a specially designed set of tools with movable sleeves. The principle of operation of the tool set is described and examples of the numerical analysis results are given. The FEM simulation was performed on the assumption that the hot-formed hollow workpiece (tube) is made of AlMgSi aluminum alloy. The obtained FEM results show changes in the workpiece shape during flanging, variations in the forming force and the damage function distribution computed according to the C-L failure criterion. The theoretical results of the new flanging method provided basis for experimental tests.

MODELLING AND FORECASTING OF CLOUD DATA WAREHOUSING LOAD

Cloud data storages in their internal structure are not using their full potential functionality because of the complexity of behavior of network traffic, which affects the quality of service. The paper describes various models of network traffic and analyzes the most promising models for cloud data storages that take into account the phenomenon of self-similarity. The result of research found the frequency of cloud data warehouse traffic and that the intensity of storage load mainly depends on the incoming and outgoing traffic. Sufficiently high value of Hurst parameter indicates the potential for modelling and prediction of con-gestion cloud data storage in the long run.

CAN LOCAL KNOWLEDGE WORKERS SIGNIFICANTLY CONTRIBUTE TO THE GROWTH OF THE NATIONAL LEVEL OF INNOVATION?

This paper systematically examines the role of knowledge workers on the level of innovation development in Poland. Specific hypotheses on the importance of the collaboration of knowledge workers for the growth of national innovation in two areas: knowledge creation and knowledge exploitation are examined. The study is based on a survey and interviews with 40 IT workers in small Polish businesses. The results show that cooperation between knowledge workers enables an improvement in the amount of human resources in science and technology and an increase in the number of high- and medium-tech Polish manufacturing enterprises. Specifically, the results confirm the hypothesis that the greater the amount of collaboration between knowledge workers, the higher the level of national innovation measured in these two indicators.

CONDITIONS OF MANUFACTURING IN CONTEMPORARY SMALL AND MEDIUM ENTERPRICES

In accordance with the requirements of the modern market, small and medium-sized enterprises (SMEs) need to offer a wide range of products tailored to the specific and individual requirements. The article presents the conditions of production using modern computer techniques. Presented solutions are used in modern practice.

USING DISK SPRING SOLVER APPLICATION FOR PROTOTYPING DISK SPRINGS IN PASSENGER LIFT CATCHERS

The foregoing study presents the use of Disk Spring Solver DSS application for prototyping configurations of disk spring pile applied in the design of friction lift catchers. The methodology of disk springs selection was presented on the basis of possibilities given by DSS application. On the basis of this application and the conducted analyses disk springs were optimally matched with catchers as main flexible element. The design of catchers was worked out in model environment SolidWORKS 2012 together with MES analysis.