Primjena nove smjese i tehnologije granulacije sirovine za proces sinterovanje željezne rude

This paper presents a new technology for preparing the mixture for iron ore sintering process. The nature of component mixing and granulation has been discussed. The application of the intensive mixer in the preparation of the process components has been shown. The results of the analysis of the sintering mixture granulation process using laboratory installation for mixing and granulation have been presented.Članak donosi nove tehnologije za primjenu smjese za sinterovanje željezne rude. Raspravljena je priroda komponenti smjese i granulacija. Prikazana je intenzivna primjena smjese u pripremnom procesu komponenti. Prikazani su, rabljenjem laboratorijske opreme za smjesu i granulaciju, rezultati analiza granulacije sinterovane smjese

Chinese Miscanthus (Miscanthus sinensis) as a potential energy plant

W publikacji przeprowadzona została analiza porównawcza miskanta chińskiego (Miscanthus sinensis Anderss) i innych roślin energetycznych. Stwierdzono, że miskant jest dobrą alternatywą dla dotychczas uprawianych roślin energetycznych. Do zalet miskanta chińskiego można zaliczyć: wysoki plon suchej masy, małe zapotrzebowanie na wodę i wysoką mrozoodporność. Przeprowadzone badania wytrzymałościowe źdźbła miskanta chińskiego (próba 3-punktowego zginania) wskazują, że maksymalne naprężenia na zginanie są zależne zarówno od wilgotności, jak i od numeru międzywęźla. Wartości naprężeń maksymalnych zmieniają się od 61 MPa do 150 MPa. Wynika to zarówno z zależności od wilgotności i numeru międzywęźla, jak również z biologicznej zmienności źdźbła.In the publication a comparative analysis of Chinese Miscanthus (Miscanthus sinensis Anderss) and other energy plants was carried out. It was found that Miscanthus sinensis is a good alternative to previously grown energy plants. The advantages of Miscanthus sinensis are: high dry matter yield, low water requirements, and high resistance to frost.The study of Miscanthus sinensis stalks strength (3-point bending sample) indicate that the maxi-mum bending stresses are dependent on both the humidity and the number of internodes. Maximum stress values vary from 61 MPa to 150 MP. This is due to both depending on the humidity and the number of internodes, as well as the biological variability of the stalk

Animating sign language in the real time

The paper presents selected problems of visualizing animated sign language sentences in real time. The presented solution is a part of a system for translation of texts into the sign language. The animation and graphical techniques applied in the system are briefly presented, but the main problems discussed are: how to specify the sign language and how to interpret such a specification. A concise, easy-to-use Szczepankowski's gestographic notation has been adopted. It is widely used in the Polish deaf community. It has been originally intended to be used by humans; thus a part of information it holds is incomplete, inexact, in many cases highly intuitive. The automatic interpretation has to reconstruct all the information that lacks. Another group of problems we have encountered involves issues of kinematics: the motion is to be generated depending on the information that is very general. Techniques like reverse kinematics and collision detecting and avoiding have to be applied. In effect the system is capable to demonstrate gestures as well as whole sentences on the basis of the notation, that is easy for humans to create and to read

The virtual courtroom: a view of justice. Project to prepare witnesses or victims with learning disabilities to give evidence

With the advent of 'The Youth Justice and Criminal Evidence Act 1999' passed by Parliament in August 1999, vulnerable witnesses can for the first time give evidence to the court with the support of 'special measures'. People with a learning disability fall into the category of vulnerable witnesses, and the purpose of this paper is to describe the development of the virtual courtroom, a virtual reality (VR) and multimedia based training platform to prepare this group of people for such an eventuality. Method: A user-centred design methodology was adopted, with a user group being formed of students and adults with learning disabilities. This group, working together with facilitators, experts on the new act, and experienced designers of VR based training systems, designed and implemented the virtual courtroom. Results: The virtual courtroom model has been produced using the Realimation Virtual Reality software tool. The next stage of the project is to design and develop three multimedia-based scenarios showing a variety of situations in which a person with a learning disability could give evidence in court. Conclusion: One of the recommendations in the 'Speaking up for justice' report, suggested that the Home Office develop further material to assist vulnerable witnesses to prepare for their attendance at court. The virtual courtroom provides one of the first and most innovative of such solutions

The Software Design Board: a Tool supporting Workstyle Transitions in Collaborative Software Design

Abstract. Software design is a team activity, and designing effective tools to support collaborative software design is a challenging task. Designers work together in a variety of different styles, and move frequently between these styles throughout the course of their work. As a result, software design tools need to support a variety of collaborative styles, and support fluid movement between these styles. This paper presents the Software Design Board, a prototype collaborative design tool supporting a variety of styles of collaboration, and facilitating transitions between them. The design of Software Design Board was motivated by empirical research demonstrating the importance of such support in collaborative software design, as well as activity analysis identifying the lack of support in existing tools for different styles of collaboration and transitions between them.