ACS Applied Computer Science

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vol. 13, no. 2,2017

COMPUTER AIDED THERMAL PROCESSES IN TECHNICAL SPACES

This paper describes research work on methods concerning heat transfers through walls of thermal technical chambers. The paper presents the mathematical and physical analysis of problems in the field of energy savings and material selection in thermal chambers in controlled gaseous environment. The purpose for the research is to point out areas subjected to the highest energy losses  caused by building’s construction and geographical orientation of walls in the aspect of daily atmospheric temperature changes  emerging on chamber exterior. Thermal problems were solved using computer aided support. The paper presents exemplary measurement results taken in Lublin region during various periods throughout a year.
  • APA 6th style
Janczarek, M., & Bulyandra, O. (2017). Computer aided thermal processes in technical spaces. Applied Computer Science, 13(2), 82-93. doi:10.23743/acs-2017-16
  • Chicago style
Janczarek, Marian, and Oleksij Bulyandra. "Computer Aided Thermal Processes in Technical Spaces." Applied Computer Science 13, no. 2 (2017): 82-93.
  • IEEE style
M. Janczarek and O. Bulyandra, "Computer aided thermal processes in technical spaces," Applied Computer Science, vol. 13, no. 2, pp. 82-93, 2017.
  • Vancouver style
Janczarek M, Bulyandra O. Computer aided thermal processes in technical spaces. Applied Computer Science. 2017;13(2):82-93.
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A SIMULATION EXPERIMENT AND MULTI-CRITERIA ASSESSMENT OF MANUFACTURING PROCESS FLOW VARIANTS TESTED ON A COMPUTER MODEL

The article presents issues relating to designing and improvement of manufacturing processes based on a modelling and simulation method. The 3D model of a production line has been designed and simulation experiment, conducted on the Arena model prepared in a versatile package for modelling and simulation of manufacturing systems and representing functioning of the system, has been carried out. The results obtained from the experiment and analyses of time and ergonomics of work at a work station were subject to multi-criteria assessment based on a point-by-point method of assessment according to Yager.
  • APA 6th style
Kukla, S., & Smetana, M. (2017). A simulation experiment and multi-criteria assessment of manufacturing process flow variants tested on a computer model. Applied Computer Science, 13(2), 72-81. doi:10.23743/acs-2017-15
  • Chicago style
Kukla, Sławomir, and Marek Smetana. "A Simulation Experiment and Multi-Criteria Assessment of Manufacturing Process Flow Variants Tested on a Computer Model." Applied Computer Science 13, no. 2 (2017): 72-81. 
  • IEEE style
S. Kukla and M. Smetana, "A simulation experiment and multi-criteria assessment of manufacturing process flow variants tested on a computer model," Applied Computer Science, vol. 13, no. 2, pp. 72-81, 2017.
  • Vancouver style
Kukla S, Smetana M. A simulation experiment and multi-criteria assessment of manufacturing process flow variants tested on a computer model. Applied Computer Science. 2017;13(2):72-81.
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MATCHING PURSUIT ALGORITHM IN ASSESSING THE STATE OF ROLLING BEARINGS

In this paper the results of Matching Pursuit (MP) Octave algorithm applied to noise, vibration and harness (NVH) diagnosis of rolling bearings are presented. For this purpose two bearings in different condition state were examined. The object of the analysis was to calculate and present which energy error values of MP algorithm give the most accuracy results for different changes in bearing structures and also how energy values spread in time-frequency domain for chosen energy error value.
  • APA 6th style
Jonak, K., & Krukow, P. (2017). Matching Pursuit algorithm in assessing the state of rolling bearings. Applied Computer Science, 13(2), 61-71. doi:10.23743/acs-2017-14
  • Chicago style
Jonak, Kamil, and Paweł Krukow. "Matching Pursuit Algorithm in Assessing the State of Rolling Bearings." Applied Computer Science 13, no. 2 (2017): 61-71.
  • IEEE style
K. Jonak and P. Krukow, "Matching Pursuit algorithm in assessing the state of rolling bearings," Applied Computer Science, vol. 13, no. 2, pp. 61-71, 2017.
  • Vancouver style
Jonak K, Krukow P. Matching Pursuit algorithm in assessing the state of rolling bearings. Applied Computer Science. 2017;13(2):61-71.
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DEA-BASED DYNAMIC ASSESSMENT OF REGIONAL ENVIRONMENTAL EFFICIENCY

We apply window Data Envelopment Analysis (DEA) to the solution of the problem of assessment of the efficiency of regional production systems in Southern Russia. The proposed method allows to monitor the changes in efficiency of regional economic systems throughout time and has a high discrimination power. The simplicity of the technical implementation of the proposed method and the availability of the necessary software for its use allow one to hope for its wide implementation in the modern practice of regional environmental management.
  • APA 6th style
Ratner, S., & Ratner, P. (2017). DEA-based dynamic assessment of regional environmental efficiency. Applied Computer Science, 13(2), 48-60. doi:10.23743/acs-2017-13
  • Chicago style
Ratner, Svetlana, and Pavel Ratner. "Dea-Based Dynamic Assessment of Regional Environmental Efficiency." Applied Computer Science 13, no. 2 (2017): 48-60.
  • IEEE style
S. Ratner and P. Ratner, "DEA-based dynamic assessment of regional environmental efficiency," Applied Computer Science, vol. 13, no. 2, pp. 48-60, 2017.
  • Vancouver style
Ratner S, Ratner P. DEA-based dynamic assessment of regional environmental efficiency. Applied Computer Science. 2017;13(2):48-60.

THE NONUNIFORMITY OF THE PISTON MOTION OF THE RADIAL ENGINE

The results of kinematic analysis of the ASz-62IR radial engine crankshaft was presented. In addition, the one-dimensional model of the working cycle of the engine was created in AVL BOOST system. Differences in the waveforms for each pistons causes the differences in the filling process what reflects in the mass of the load supplied to cylinders. Additionally, due to one dimensional model computation. The results show differences in the value of maximum pressure. This causes differences in mean effective pressure of up to 4% and which also affects the vibrations of the whole engine.
  • APA 6th style
Pietrykowski, K., & Tulwin, T. (2017). The nonuniformity of the piston motion of the radial engine. Applied Computer Science, 13(2), 39-47. doi:10.23743/acs-2017-12
  • Chicago style
Pietrykowski, Konrad, and Tytus Tulwin. "The Nonuniformity of the Piston Motion of the Radial Engine." Applied Computer Science 13, no. 2 (2017): 39-47.
  • IEEE style
K. Pietrykowski and T. Tulwin, "The nonuniformity of the piston motion of the radial engine," Applied Computer Science, vol. 13, no. 2, pp. 39-47, 2017.
  • Vancouver style
Pietrykowski K, Tulwin T. The nonuniformity of the piston motion of the radial engine. Applied Computer Science. 2017;13(2):39-47.

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