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30 lat seminarium Zastosowanie Komputerów w Nauce i Technice

Referowski Ludwik, Świsulski Dariusz

Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej

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2020

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Nr 71

7--26

PL

W artykule przedstawiono powstanie cyklu seminaryjnego Zastosowanie Komputerów w Nauce i Technice i jego rozwój w kolejnych latach. Podano problemy i perspektywy seminarium na przyszłe lata. Załączniki zawierają wykaz artykułów opublikowanych przez 30 lat w Zeszytach Naukowych Wydziału Elektrycznego i Zeszytach Naukowych Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej oraz wykaz laureatów konkursu na najlepszy referat.

EN

The article presents the organization of the seminar cycle Application of Computers in Science and Technology and its development in following years. The problems and prospects of the seminar for the coming years were given. The appendices contain a list of articles published for 30 years in The Scientific Papers of Faculty of Electrical Engineering and The Scientific Papers of Faculty of Electrical and Control Engineering Gdańsk University of Technology, and the list of winners of the competition for the best paper.

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Tabular minimal redundant modular structures for fast and high-precision computations using general-purpose computers

Selianinau M.

Scientific Issues of Jan Długosz University in Częstochowa. Mathematics

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2017

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Vol. 22

129--139

EN

The present paper is a continuation of research in parallel information processing based on the tabular modular computing structures. We deal with the methodology of using a minimal redundant modular number system for high-speed and high-precision computation by means of modern universal multicore processors. Advantages of formal computing mode on the base of modular arithmetic are demonstrated by the example of implementation of digital signal processing procedures. The additive and additive multiplicative formal computing schemes with the obtained estimations of the cardinality of working ranges for the realization of calculations are presented in the article.

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Safety management for polluted confined space with IT system: a running case

Hwang J.-J., Wu C. H., Zhuang Z.-Y., Hsu Y. C.

International Journal of Occupational Safety and Ergonomics

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2015

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Vol. 21, No. 2

233--239

EN

This study traced a deployed real IT system to enhance occupational safety for a polluted confined space. By incorporating wireless technology, it automatically monitors the status of workers on the site and upon detected anomalous events, managers are notified effectively. The system, with a redefined standard operations process, is running well at one of Formosa Petrochemical Corporation's refineries. Evidence shows that after deployment, the system does enhance the safety level by real-time monitoring the workers and by managing well and controlling the anomalies. Therefore, such technical architecture can be applied to similar scenarios for safety enhancement purposes.

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Finnish discourses of the stakeholders on development of the implementation of EU legislation concerned with occupational safety and health in computer work

Niskanen T.

International Journal of Occupational Safety and Ergonomics

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2015

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Vol. 21, No. 4

413--425

EN

The overall research objective was to empirically develop the ideas around a system of occupational safety and health (OSH) practices in visual display unit (VDU) work, to describe their relationship with the OSH legislation and to explore how these best practices work to achieve positive results. The aim of the present study was to explore qualitative perceptions of the stakeholders (Finnish Employers’ Associations, Employees Organizations and OSH Governmental Inspectorates) concerning the way that the OSH legislation on VDU work is being applied at work. Many stakeholders claim that technological advances require that in OSH the VDU legislation should be updated, especially that it should be clarified, e.g., when does the VDU worker have the right to obtain special eyeglasses needed for VDU work. Many stakeholders believe that additional guidelines concerning practical ergonomic arrangements in VDU work environment and eyeglasses of the VDU workers are needed. In VDU ergonomics, the co-operation between workplace and occupational health care professionals needs to be developed.

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Assessment of functional parameters and comfort of a new computer mouse as compared with other types of input devices

Dehghan N., Choobineh A., Razeghi M., Hasanzadeh J., Irandoost M., Ebrahimi S.

International Journal of Occupational Safety and Ergonomics

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2015

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Vol. 21, No. 4

493--497

EN

Background. This study was conducted to assess functional parameters and comfort of a new computer mouse (Ergomice) as compared with three other input devices. Materials and methods. Functional parameters (i.e., task completion time and error rate) of each device were assessed by 10 participants using standardized software based on Standard No. ISO 9241-9:2000. Comfort evaluation was also undertaken for each device using the visual analogue scale technique. Statistical analysis including the Wilcoxon signed-rank test and the Friedman test was performed using SPSS version 16. Results. The functional parameters of the standard mouse were better than those of the other devices. However, no significant difference was observed between this mouse and Ergomice. Overall comfort evaluation showed that the standard mouse and Ergomice were more comfortable to work with. The comfort level of hand/wrist posture in the Ergomice was higher than that of the other three devices. Conclusion. The design features of Ergomice could improve its functional properties. Hand/wrist posture comfort of Ergomice was judged to be high compared with that of the other devices.

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Klasyfikacja suszu pietruszki z wykorzystaniem sztucznych sieci neuronowych

Koszela K.

Journal of Research and Applications in Agricultural Engineering

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2012

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Vol. 57, nr 1

87-90

PL

W ostatnich latach prace naukowo-badawcze realizowane w inżynierii rolniczej coraz częściej wykorzystują nowoczesne narzędzie modelowania, jakim są sztuczne sieci neuronowe. To narzędzie, jako uniwersalny aproksymator, w połączeniu z komputerową analizą obrazów, stosowane jest do tworzenia modeli empirycznych, opisujących zjawiska i procesy występujące w pozyskiwaniu i przetwarzaniu materiałów roślinnych. Szczególną cechą sztucznych sieci neuronowych jest zdolność uogólniania nabytej wiedzy, co jest ważnym aspektem w badaniach na obiektach o dużej liczbie czynników determinujących dany proces. Celem pracy badawczej było opracowanie modelu neuronowego do oceny jakości suszu pietruszki i jego klasyfikacji na podstawie cyfrowych fotografii. Do analizy i klasyfikacji wykorzystano susz pietruszki pozyskany metodą konwekcyjną. Do modelu klasyfikacyjnego wybrano cechy charakterystyczne, które umożliwiały klasyfikację ze względu na jakość suszu. W wyniku przeprowadzonych badań wygenerowano kilka modeli neuronowych, które poddano weryfikacji i walidacji.

EN

In recent years, agricultural engineers working in research have been using modern modeling tools, such as artificial neural networks, with increasing frequency. This tool, as a universal approximator together with computer image analysis is used to create empirical models that describe phenomena and processes involved in extracting and processing plant materials. Artificial neural networks are able to generalize from acquired knowledge, and this is an important feature when analyzing data involving a large range of factors to determine a given process. The objective of this research work was to develop a neural model allowing the assessment of dried parsnip quality and its classification on the basis of digital photos. Obtained by the convection method, the dried parsnip was analysed and classified. Its characterisctic features were chosen, allowing classification according to quality. As the result of the research, a number of generated neural models were verified and validated.

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Zastosowanie oprogramowania wspomagającego kontrolowanie procesu epitaksji związków półprzewodnikowych w technologii MOCVD

Wesołowski M., Strupiński W., Zynek J., Caban P., Dumiszewska E., Lenkiewicz D., Kościewicz K., Czołak D., Nizel J.

Materiały Elektroniczne

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2007

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T. 35, nr 3-4

19-30

PL

Celem artykułu jest przedstawienie oprogramowania komputerowego obejmującego szereg zadań związanych z epitaksją związków półprzewodnikowych. Wśród zadań tych znalazły miejsce: 1. zarządzanie przepływami prekursorów, 2. wspomaganie wytwarzania struktur ze studnią kwantową, 3. analiza struktur fotonicznych, 4. analiza potencjału elektrycznego w strukturach. Weryfikacja oprogramowania podczas pracy z systemem epitaksji MOCVD wykazała, że stanowi ono pozytywny przykład rozwiązania problemu numerycznego wspomagania procesu epitaksji.

EN

Several areas of semiconductor epitaxy can be efficiently assisted by computer recipes, some of these areas are already covered by well developed software units, other still needs such approach. The presentation of a software package combining most important tasks in one utility and some tests with MOCVD are included in this publication. The studied software overcomes following topics: 1. Flow corrections computing for ternary, quaternary or higher order compounds. 2. Analysis of quantum wells in semiconductor structures. 3. Analysis of Bragg reflectors and other 1- dimensional photonic structures. 4. Electrical potential profiling. 5. Calculators for minor epitaxy-related problems. Evaluation of flow corrections computing was tested on MOCVD with InGaAsP/InP, InGaAsP/GaAs, and other quaternaries and ternaries. Beside first order approximation, the process-flows response was exercised with application of "software-learning" empirical approach. Results indicated these functions as comfortable and efficient. The semiconductor quantum well structure analysis performed on AlGaAs/GaAs, InGaAs/GaAs, InGaAs/InP and other structures enabled to determine quantum well parameters with high accuracy. The algorithm developed for strained quantum wells was capable to resolve both QW thickness and composition in multiple PL test. The 1- dimensional photonic structure study with InGaAs/InP Bragg reflectors allowed to fit experimental data and resolve structure parameters and uniformity, technological problems with resonant cavities epitaxy have manifested as reduced by application of compiled numerical recipes. The next software area - electrical potential profiling - offered possibility to investigate HEMT structures, prepare potential data for semiconductor quantum well analysis or to forecast depletion regions of test structures. With few other numerical units all algorithms compose a solution of the problem of computer support for epitaxy.

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Telecommunication networks optimization with evolution stochastic algorithms

Olej V., Świątnicki Z.

Biuletyn Wojskowej Akademii Technicznej

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2001

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Vol. 50, nr 2-3

197-211

EN

The paper presents design and analysis of evolution stochastic optimization algorithms to look for optimal multicast routing in broadband telecommunication networks. Following results of computing resources, computing time and cost of connection in broadband telecommunication networksdepend on the correct selection of algorithm according to large of the network and on the parameters of algorithms. For good result of design of the networks, a compromise between kind of algorithm cost of connection and computing time of designed connection is needed.

PL

W pracy przedstawiono projektowanie i analizę ewolucyjnych stochastycznych algorytmów optymalizacyjnych w zastosowaniu do racjonalnego kierowania ruchem w szerokopasmowych sieciach telekomunikacyjnych. Zasoby komputerowe, czas obliczeń oraz koszt połączeń w sieciach szerokopasmowych zależą od właściwego wyboru algorytmu, co jest złożonym zadaniem z powodu rozległości sieci i wielości parametrów algorytmu. Aby otrzymać racjonalne rozwiązanie niezbędny jest kompromis między rodzajem algorytmu, kosztem połączeń i czasem obliczeń.