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Wyszukujesz frazę "Ciszek, A." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
Theory of constraints as a stimulus towards warehouse transformation process on the example of the distribution center
Autorzy:
Lewandowska-Ciszek, A.
Powiązania:
https://bibliotekanauki.pl/articles/407387.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
warehousing
picking
efficiency
competitiveness
Theory of Constraints
Opis:
In the face of challenges faced by today’s managers, such as unreliability of processes conducted within the company, low quality of materials, too long time of fulfilling the customer orders and missing the deadlines of their implementation, the role of dynamic parameters of the warehousing as the source of competitive advantage of a modern enterprise is growing. The aim of the study is to identify and analyze the factors determining the effective implementation of the warehousing in the Distribution Center. In the research there has been adopted the following hypothesis: with the increase in the number of customer orders, which is characterized by an increasingly smaller number of assortment items, the importance of managing constraints limiting the material flow within the warehousing is increasing. The above-mentioned hypothesis is verified in accordance with the test procedure including literature research and a case study. The research results show that the Theory of Constraints is an excellent tool supporting the transformation of the warehouse management method. With the help of the Theory of Constraints it is possible to determine precisely the places in the material flow, where the adaptation actions undertaken bring down the greatest effects.
Źródło:
Management and Production Engineering Review; 2018, 9, 4; 96-105
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Complexity of a modern enterprise and its flexibility in the sector of industrial automation
Autorzy:
Lewandowska-Ciszek, A.
Powiązania:
https://bibliotekanauki.pl/articles/202428.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
industrial automation
measurement
complexity
flexibility
competitiveness
Opis:
The awareness of the growing importance of the complexity in creating a new type of a modern enterprise strategy and in introducing changes within planning, control and organizational structures contributed to undertaking studies on relationships occurring between the complexity of a modern enterprise and its flexibility in the sector of industrial automation, as well as filling the gap relating to the cognitive impact of poor complexity management on the flexibility of the company. The main objective of the research work is to check whether there is an important relationship between the complexity of the business and its flexibility in the industrial automation sector. Quantification of the relationship between these two quantities – the complexity and flexibility – happened by the use of the Multidimensional Correspondence Analysis (MCA) and Perceptual Maps. The study which has been carried out indicated that the flexibility and complexity functions in the enterprise management rise, however, the knowledge of these issues is highly insufficient. The research discovered that the obstacles which hamper striking a balance between the flexibility and complexity in their advanced stages exert a devastating impact on the quality of the process management. Reducing the flexibility at its higher levels generates a context in which the market risk is enhanced. Companies characterised by improper flexibility management bear higher workforce costs and their processes of decision-making last longer. Methodical and systematized study of flexibility and complexity will decrease the destructive influence of the interaction between these two categories.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 3; 575-584
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Supercharging without a compressor of stepless compression combustion engine
Bezsprężarkowe doładowanie bezstopniowe silnika spalinowego o zapłonie samoczynnym
Autorzy:
Ciszek, K.
Kaźmierczak, A.
Tkaczyk, M.
Zabłocki, W.
Powiązania:
https://bibliotekanauki.pl/articles/245737.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
silnik spalinowy
doładowanie
napełnienie cylindra
combustion engines
intake throttle
filling up
Opis:
One of the main interests of constructors is an approach to the optimal load exchange proces s and consequently obtaining the maximal cylinder filling. Aiming at the cylinder's filling improvement caused rapid development of supercharging in all its transforms, more perfect and sophisticated. One of such approach is a dynamic supercharging commonly used in engines with fuel injection. In order to improve working parameters operating in precisely predetermined rotational speed the dynamic supercharger can be applied as a union with a turbo supercharger or as an independent system This objective is relatively easy to achieve for a single cylinder engine, however for a multi cylinder engines it appears to be more complicated. It has been determined that dynamical supercharging as opposed to turbo supercharging is proved economically and efficient engine response improvement procedure. The objective of presented paper is creating as well as calculating a stepless supercharging system of the resonance compression combustion engine used as a drivefor motor cars Proposed system consists in the connection of the existing solution of the continuous change of the geometry system through the change of the length only resonance lines with the change of the volume of the resonance reservoir.
Jednym z najważniejszych zagadnień konstrukcyjnych silników spalinowych jest zapewnienie optymalnego napełnienia cylindra silnika spalinowego. Poprawa napełnienia cylindra jest najczęściej realizowana z wykorzystaniem różnych systemów doładowania, a najczęściej w tym celu stosuje się turbodoładowanie w wszystkich jego odmianach. Jedną z odmian systemu doładowania jest doładowanie dynamiczne lub rezonansowe. W niniejszej pracy zaproponowano nowatorski projekt układu dolotowego, którego zadaniem jest poprawa napełnienia silnika w szerokim zakresie prędkości obrotowej. System ten jest relatywnie prosty w przypadku silnika jednocylindrowego, jednakże w silniku wielocylindrowym jest bardziej skomplikowany. Doładowanie dynamiczne w wersji ograniczonej do określonego zakresu prędkości obrotowej silnika jest obecnie szeroko stosowane w połączeniu z turbodoładowaniem. W pracy tej przedstawiono obliczenia bezstopniowego układu doładowania dynamicznego silnika o zapłonie samoczynnym przeznaczonego do samochodu osobowego. Zaproponowany układ polega na połączeniu istniejącego rozwiązania płynnej zmiany geometrii układu poprzez zmianę długości tylko przewodów rezonansowych ze zmianą objętości zbiornika rezonansowego
Źródło:
Journal of KONES; 2009, 16, 4; 51-58
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ex vivo and in silico study of human Common Carotid Arteries pressure response in physiological and inverted state
Autorzy:
Piechna, A.
Cieślicki, K.
Lombarski, L.
Ciszek, B.
Powiązania:
https://bibliotekanauki.pl/articles/265143.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
artery mechanics
residual stress
pressure-inflation test
common carotid artery
tętnica szyjna
metoda elementów skończonych
symulacja komputerowa
Opis:
Arterial walls are a multilayer structures with nonlinear material characteristics. Furthermore, residua stresses exist in unloaded state (zero-pressure condition) and they affect arterial behavior. To investigate these phenomena a number of theoretical and numerical studies were performed, however no experimental validation was proposed and realized yet. We cannot get rid of residual stresses without damaging the arterial segment. In this paper we propose a novel experiment to validate a numerical model of artery with residual stresses. The inspiration for our study originates from experiments made by Dobrin on dogs’ arteries (1999). We applied the idea of turning the artery inside out. After such an operation the sequence of layer is reversed and the residual stresses are re-ordered. We performed several pressure-inflation tests on human Common Carotid Arteries (CCA) in normal and inverted configurations. The nonlinear responses of arterial behavior were obtained and compared to the numerical model. Computer simulations were carried out using the commercial software which applied the finite element method (FEM). Then, these results were discussed.
Źródło:
International Journal of Applied Mechanics and Engineering; 2015, 20, 1; 209-214
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High renin arterial hypertension due to occlusion of the adrenal veins in the rat
Autorzy:
Abramczyk, P
Przybylski, J.
Lisiecka, A.
Papierski, K.
Ciszek, B.
Powiązania:
https://bibliotekanauki.pl/articles/70105.pdf
Data publikacji:
1995
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
kidney function
occlusion
adrenal vein
central adrenal vein
high renin
plasma concentration
blood
adrenal gland
plasma renin
rat
blood pressure
human physiology
adrenorenal rete
arterial hypertension
hormone
Źródło:
Journal of Physiology and Pharmacology; 1995, 46, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Machine learning models for predicting patients survival after liver transplantation
Autorzy:
Jarmulski, W.
Wieczorkowska, A.
Trzaska, M.
Ciszek, M.
Paczek, L.
Powiązania:
https://bibliotekanauki.pl/articles/305726.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
machine learning
models interpretability
survival prediction
generalized additive models (GAM)
liver transplant
Opis:
In our work, we have built models predicting whether a patient will lose an organ after a liver transplant within a specified time horizon. We have used the observations of bilirubin and creatinine in the whole first year after the transplantation to derive predictors, capturing not only their static value but also their variability. Our models indeed have a predictive power that proves the value of incorporating variability of biochemical measurements, and it is the first contribution of our paper. As the second contribution we have identified that full-complexity models such as random forests and gradient boosting lack sufficient interpretability despite having the best predictive power, which is important in medicine. We have found that generalized additive models (GAM) provide the desired interpretability, and their predictive power is closer to the predictions of full-complexity models than to the predictions of simple linear models.
Źródło:
Computer Science; 2018, 19 (2); 223-239
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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