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1

Management of Assortment Inventory Groups in Selected Foundry

Szymszal J., Kuczyńska-Chałada M., Król J.

Archives of Foundry Engineering

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2015

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Vol. 15, iss. 3

67--70

EN

As experience shows the practical, reliable assessment and optimisation of total costs of logistical processes implemented in supply chains of foundry plants is a quite complex and complicated process, because it requires to enclose all, without exception, performed actions, including them in various reference cross-sections, systematic activities and finally transforming them in a totally homogenous collection. Only solid analysis and assessment of assortment management in logistical supply systems in foundry plants of particular assortment groups allows to lower the supply costs significantly. In the article the analysis and assessment of the newest implemented optimising algorithms are presented in the process stock management of selected material groups used in a production process of a chosen foundry plant. A practical solution to solve a problem of rotary stock cost minimisation is given as well as of costs while creating a stock with the usage of economical volume and value of order.

2

Energy Demand of Compressor Machines Used in Foundry Plants

Ziółkowski E., Smyksy K., Wrona R., Brzeziński M.

Archives of Foundry Engineering

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2013

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Vol. 13, iss. 2 spec.

112--115

EN

The paper investigates the issues relating to energy consumption in the compressed air installations in foundry plants. Basing on the general characteristics of modern compressors, the major factor and conditions are identified that affect the energy consumption by compressor machines in installations with equalising tanks. Selected aspects are addressed on the basis of measurement data of a screw compressor available in the laboratory of the Faculty of Foundry Engineering AGH-UST.

3

Prognozowanie szeregów czasowych wielkości sprzedaży w Zakładzie Odlewniczym

Szymszal J., Pucka G., Gierek A., Przondziono J.

Archiwum Odlewnictwa

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2005

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R. 5, nr 17

325--332

PL

W artykule przedstawiono wybrane metody prognozowania szeregów czasowych ujmujących liczbę sprzedanych odlewów w określonym okresie sprawozdawczym. Wykorzystano metody bazujące na modelach wyznaczonych dzięki zastosowaniu metod analizy regresji i korelacji, autokorelacji i autoregresji oraz statystyki Durbina-Watsona. Przedstawiono również metodę wygładzania szeregu czasowego w oparciu o średnie ruchome oraz wygładzanie wykładnicze wraz z wyznaczeniem miar dokładności prognozy.

EN

The paper has presented chosen methods of predicting time series embracing number of sold castings during specified reporting period. The methods based on models determined through use of regression and correlation analysis, autocorrelatio n and autoregression as well as Durbin-Watson statistic were applied. Methodology of time series smoothing on the basis of movable means and exponential smoothing with determination of prediction accuracy measures was presented as well.