Search Results

1 - 10 of 27 items :

  • "performance" x
  • Mechanical Engineering x
  • Introductions and Overviews x
Clear All
Sustainability of a Small Firm – the Entrepreneurial Perspective

, Oficyna Wydawnicza Branta, Bydgoszcz, 14-29. Ploum, L., Blok, V., Lans T., Omta O., 2018. Toward a validated competence framework for sustainable entrepreneurship. Organization&Environment, 31(2), 113-132. Prawo ochrony środowiska (POS) z dnia 27 kwietnia 2001 r., art.3, pkt.50. Raymond, L., Marchand, M., St-Pierre, J., Cadieux,, L., Labelle, F., 2013. Dimensions of small business performance from the owner-manager's perspective: a re-conceptualization and empirical validation , Entrepreneurship & Regional Development, 25(5-6), 468-499. Revell

Open access
Calculation of the Thermal Dynamic Performance of the Residential Buildings’ Walls

–58. EIA (US Energy Information Administration), 2016. International Energy Outlook 2016 With Projections to 2024 . Washington, DC, US. https://www.eia.gov/outlooks/ieo/ EN ISO 13786 Standard 2017: Thermal performance of building components -- Dynamic thermal characteristics - Calculation methods Ferrariand S., Zanotto, V., 2016. Building Energy Performance Assessment in Southern Europe. Springer, Berlin, Heidelberg, Leipzig, Germany. Giarma, C., Kontoleon, K. J., 2016. Dynamic thermal response of building material layers in aspect of their

Open access
Improvement of Manual Assembly Line Based on Value Stream Mapping (VSM) and Efectiveness Coefficient

.P., Sieckmann, F., Kohl, H., Seliger, G. 2018, Learning process planning for special machinery assembly, Procedia Manufacturing 23, pp. 75–80. DOI:10.1016/j.promfg.2018.03.164. Moreira, B.M.D.N., Gouveia, R.M.,Silva, F.J.G.; Campilho, R.D.S.G. 2017, A Novel Concept of Production and Assembly Processes Integration , Procedia Manufacturing 11, pp. 1385–1395. DOI: 10.1016/j.promfg.2017.07.268. Naebulharam, R., Zhang, L. 2013, Performance Analysis of Serial Production Lines with Deteriorating Product Quality , IFAC Proceedings Volumes 46/9, pp. 501–506. DOI: 10

Open access
Proposal of Methodology for Practical Application of Nonparametric Control Charts

, M. A., 2008. A nonparametric control chart based on the Mann-Whitney statistic. Beyond Parametrics in Interdisciplinary Research: Festschrift in Honor of Professor Pranab K. Sen Beachwood, Ohio, USA: Institute of Mathematical Statistics, 156, DOI: 10.1214/193940307000000112. Chin, W. S., Khoo, M. B. C., 2012. A study of the median run length (MRL) Performance of the EWMA T chart for the mean . The South African Journal of Industrial Engineering, 23(3), 42-55, DOI: 10.7166/23-3-510 Coelho, M., Chakraborti, S., Marien, A., Graham, M. A., 2015. A

Open access
Computer Modelling of RC Beams Reinforced with High Strength Rebars and Steel Plate

References Abu-Tair, A., Rigden, S., Burley, E., 1996. Testing the Bond Between Repair Materials and Concrete Substrate , ACI Materials Journal, 93(6), 553-558 Tayeh, B., Bakar, B.H., Megat J., Megat A., Voo, Y. 2013. Evaluation of Bond Strength between Normal Concrete Substrate and Ultra High Performance Fiber Concrete as a Repair Material , Procedia Engineering, 54, 554–563. 10.1016/j.proeng.2013.03.050. Alghuff, A., Shihada, S., Tayeh, B., 2019. Comparative Study of Static and Response Spectrum Methods for Seismic Analysis of Regular RC

Open access
Initial Public Offering (IPO) as a Potential Source of Capital for the Development of the Wood-based Industry Enterprises in Poland

Abstract

The quest for new sources of financing for the development of green economy sectors and enterprises is one of the challenges to effective management. This study verifies whether a relationship exists between the activity of selected companies who access the capital market in search for new financing sources, their development level and their competitive edge. The sample used in this study was composed of companies from the forestry and wood-based sector (a major part of the Polish economy) listed on the Warsaw Stock Exchange. The Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) was used to assess the development level of selected enterprises. The main recommendations were formulated based on the findings from the analysis of performance ratios and from the comparative and descriptive analysis of data on stock exchange transactions in the wood-based sector. This is because the assumption was made that by becoming more active in the capital market and, as a consequence, by strengthening their competitive position, the enterprises covered by this study may contribute to adding value in the circular economy.

Open access
Concept of Reconfigurability in Interoperation Manufacturing Buffers for Smart Factory

Abstract

In this article, it is described how the reconfigurable inter-operational buffers system built on the Digital Twin platform. Interoperating production buffers are now widely used in production. Their effect on the production system can be seen in decreasing downtime. From a cost-based point of view, the interoperating production buffers may generate a gain from the reduction in the volume of work-in-process, with which we increase production performance. This ratio depends on the average number of products that the buffers contain. The average number of pieces in the buffer is limited by the capacity of the buffer. The impact of turbulence in production is seen precisely on the average content of inter-operational production buffers. If we want to maintain work-in-process on optimal values, it is necessary to calculate and maintain the optimal capacity of each interoperating production buffer on the line. In the context of Smart Factory, it is currently possible that the current capacity of the interoperating production buffers is maintained according to the current state of production. In the subject system, real production facilities communicate with each other through the IoT as autonomous agents, which are decided on the basis of a formula to calculate the optimal capacity of the buffers, the prediction of faults and negotiation, thus actively maintaining the optimal capacity of intermediate operating production buffers for Smart Factory support.

Open access
The Impact of the Melting and Pouring Process on the Quality of the Biggest Rocking Bell Called Vox Patris

Abstract

The paper describes the process of melting, metalworking and pouring the form of the world's largest 55-ton rocking bell called Vox Patris. The project was carried out by Pracownia Ludwisarska of Jan Felczyński from Przemyśl in cooperation with Rduch Bells & Clocks from Czernica and Metalodlew SA from Kraków. Comprehensive scientific and technical support of the project was provided by the Department of Foundry of the Silesian University of Technology. The bell is made of bronze, which is an alloy of copper and tin with a content of tin at the level of 20%. The foundry, where the melting and pouring process took place, had two 14 ton electric furnaces, 15 ton transport pouring ladle and a 60 ton collection ladle. Therefore, it was necessary to determine the minimum temperature of the pouring and the conditions for holding the liquid metal so that the metal from the first cast would not solidify before accumulating its total amount (four melts) (Bartocha and Baron, 2015; Bartocha and Baron, 2016). The study presents the tests of alloy properties and a series of computer simulations. Thanks to them the maximum and minimum permissible temperature of metal overheating has been determined (Bartocha, 2017). The final stage of the cast was the mold pouring process. The filling system was responsible for the correct performance of this process. This system comprised a tank (collector) under a doublestopper 60-ton main ladle, an eleven-meter tapping spout, an infusion tank and a downgate. The task of the gating system is uniform and continuous supply of liquid metal to the mold until it is completely filled. The unusual layout, that was used, required checking many factors. Various configurations of the system parameters have been tested based on the series of computer simulations (Czochlarski and Bukowski, 1935; Ignaszak, 1999).

Open access
ISO 9001 Standard Management System Certification – Data Analysis for Sectors by Country

REFERENCES Allur, E., Heras-Saizarbitoria, I., Casadesus, M., 2014. Internalization of ISO 9001: a longitudinal survey , Industrial Management & Data Systems, 114(6), 872-885. Briscoe, J.A., Fawcett, S.E., Todd, R.H., 2005. The implementation and impact of ISO 9000 among small manufacturing enterprises , Journal of Small Business Management, 43(3), 309-330. Dick, G.P.M., Heras, I., Casadesus, M., 2008. Shedding light on causation between ISO 9001 and improved business performance , International Journal of Operations & Production Management

Open access
The Area of Supply Chain Quality Management – Third Party Logistics in Case Study

, Wyższa Szkoła Logistyki w Poznaniu, Poznań. Hu, H., Flynn, B., Zhao, X., 2014. Global Supply Chain Quality Management: Product Recalls and Their Impact, CRC Press, Boca Raton. Kadłubek, M., 2018. The essence of quality in corporate logistics management , Scientific Quarterly Organization and Management, 3(43),17-30. Kardas, E., Kowacki, W., Czaja, G., 2011. Znaczenie logistyki w zarządzaniu jakością , Logistyka 5, CD. Lin, C., Kuei, C. H., Chai, K. W., 2013. Identifying critical enablers and pathways to high performance supply chain quality

Open access