49 research outputs found
Supply Chain FMEA Risk Analysis for the Heavy Industry Sector
The discussed problem is associated with the analysis of risk factors affecting supply chain management in the heavy industry sector based on the analysis of entities operating in this industry. During the research, several aspects of key importance in supply chain management in the heavy industry sector were identified. The use of the failure mode and effects analysis (FMEA) method in research has enabled the detection of defects in supply chain management and analysis of factors that may negatively affect the flow of goods. During the research, potential design flaws and the effect of these flaws were identified, indicating the class, cause, and occurrence
Understanding factors behind the effectiveness of personal identification : revolution - a new technique of creative problem solving
Although it is widely believed that inducing a change in mental perspective through personal identification with an object facilitates problem solving, empirical evidence that supports this thesis is limited. The present study aimed at recognition of factors determining the effectiveness of personal identification by verifying the efficiency of a new technique of creative problem solving called Revolution. Forty-six subjects participating in the naturalistic study were randomly assigned to five experimental groups testing several versions of Revolution. The following factors were manipulated: personal identification (presence versus lack of identification), problem type (abstract versus specific) and time lag between the preparation stage (preparing the project) and the execution stage. Solutions generated by different groups were evaluated by a team of eight competent judges using the Creative Product Semantic Scale. There was no difference in the overall quality of the solutions when problem type variable was under consideration. Surprisingly, identification appeared to have a negative impact on product creativity (as evaluated by the judges). Detailed analyses revealed that the negative influence of personal identification was limited to specific task conditions, implying that it can be neutralized by separating the preparation from execution stage. The implications of the present results are discussed
Hazards in the production process, characteristics and methods of risk elimination
This article presents the main hazards in the production process on the basis of selected enterprises. Those hazards are mainly related to the safety of workers. The second element of the analysis is the way of elimination of risk factors. The method of risk elimination in each enterprise has been shown, with particular emphasis on the most effective ways of removing threats. The comparative analysis was applied for research purposes
Analysis and evaluation of transport effectiveness and profitability
Transport is one of the final stages in the sales of the produced batch. Manufacturing enterprises each time face a dilemma whether to hire a carrier to transport finished goods or invest in their own transportation fleet. The aim of the article is to look at transport through the prism of finished goods. The discussed transport relates to road transport of metal products. The authors conducted research on the basis of the comparative analysis based on selected manufacturing companies. The analysis concerns the actual cost of transport when choosing the option of an external carrier and the carriage by own means of transport, as well as occurring transport damages
The concept of industry supply chains : a pilot study
PURPOSE: The paper presents an analysis of supply chain concepts and research on the
industry supply chain. The aim of the paper was to present the industry supply chain for the
heavy industry.APPROACH/METHODOLOGY/DESIGN: The literature analysis conducted emerged supply chain
concepts on theoretical grounds, which enabled the development of a supply chain concept
dedicated to the heavy industry. The research methodology was also based on a 2016-2019
analysis of the heavy industry industry, an interview and a literature analysis of previously
known supply chain concepts. The study group consists of nine business entities.FINDINGS: The main conclusion of the article is that industrial supply chains operate without
spatial constraints and use every possible mode of transport, depending on demand. The flow
of goods is strongly dependent on energy prices, raw material prices and labour costs.
Skilful stock control is an important factor.PRACTICAL IMPLICATIONS: It is safe to say that supply chains have existed since the beginning of
entrepreneurship. The article helps to understand this phenomenon, as well as shows a
practical look at a specific area of research through an extended research sample from
heavy industry. A certain limitation may be that the industry is too dynamically changing.
Consequently, the study of supply chain flows requires continuous improvement.ORIGINALITY/VALUE: The analysis of the heavy industry sector enabled the development of
interdependencies between the entities involved in the flow of goods. The article provides a
basis for improving supply chains in the heavy industry sector.Research financed from the NCN research project no. UMO-2012/05 / B / HS4 / 04139.peer-reviewe
Sinus of Valsalva aneurysm
Bicuspid aortic valve is one of the most common congenital cardiac anomalies and it may be
accompanied by other cardiovascular anomalies. Sinus of Valsalva aneurysm is a rare
anomaly in adult population, but it coexists with bicuspid aortic valve quite often. This report
describes a 57 years-old patient who had a bicuspid aortic valve accompanied by unruptured
Valsalva sinus aneurysm with significant left anterior narrowing and who underwent successful
surgery with ascending aorta and aortic valve replacement as well as coronary by-pass
grafting
Branżowe łańcuchy dostaw jako szansa dla współczesnych organizacji
The article presents an analysis of the concept of supply chains and studies on the industry supply chain. The literature analysis revealed theories of supply chains on a theoretical basis, which enabled the development of a supply chain concept dedicated to a specific industry – heavy industry. The purpose of the article was to present the industry supply chain for the heavy industry sector. The research methodology was based on an analysis of the heavy industry sector in 2016–2019, an interview and literature analysis of previously known concepts of supply chains.W rozdziale przedstawiono analizę koncepcji łańcuchów dostaw oraz badania dotyczące branżowego łańcucha dostaw. Przeprowadzona analiza literaturowa wyłoniła koncepcje łańcuchów dostaw na gruncie teoretycznym, co umożliwiło opracowanie koncepcji łańcucha dostaw dedykowanej branży przemysłu ciężkiego. Celem opracowania było przedstawienie branżowego łańcucha dostaw dla branży przemysłu ciężkiego. Metodyka badawcza opierała się na analizie branży przemysłu ciężkiego na przestrzeni lat 2016–2019, wywiadzie oraz analizie literaturowej dotychczas znanych koncepcji łańcuchów dostaw
Mutations in the HvDWARF, HvCPD and HvBRI1 Genes-Involved in Brassinosteroid Biosynthesis/Signalling : Altered Photosynthetic Efficiency, Hormonal Homeostasis and Tolerance to High/Low Temperatures in Barley
Brassinosteroids (BR) are steroid phytohormones that are involved in the growth and stress response in plants, but the precise mechanisms of their action are still being discovered. In our study we have used BR-deficient barley mutants 522DK and BW084 (which carry missense mutations in the HvDWARF and HvCPD genes, respectively). We have also used a BR-signalling mutant that harbors missense substitutions in the HvBRI1 gene. Our aim was (1) to find out if the content of phytohormones in the mutants grown at 20 °C is different than in the wild types and whether/how the content of phytohormones changes after plant acclimation at temperatures of 5 °C and 27 °C?, (2) to characterise the effectiveness of the light reactions of photosynthesis of the barley mutants in comparison to wild types at various temperatures, and (3) to verify the impact of mutations on the tolerance of barley to high and low temperatures. Hormonal characteristics of the BR mutants of barley show the complexity of the interactions between BR and other plant hormones that are additionally modified by temperature and possibly by other factors. The results suggest the participation of BR in auxin catabolism. Further, BR appears to play a role in maintaining the ABA–ABAGlc balance. As for the gibberellin content in plants at a temperature of 20 °C, more in-depth studies will be required to explain the contradictory effects regarding the accumulation of GA3, GA4 and GA5, which appears to be dependent on the type of mutation and connected to the BR level. A fast-kinetic chlorophyll a fluorescence analysis has revealed that the mutants had lower values of energy absorption than the wild types, but the values of the energy transferred via the electron-transport chain was maintained at the wild-type level. We presumed that BR are involved in regulating plant acclimation to extreme (low/high) temperatures, thus the BR-deficient and BR-signalling mutants should be less tolerant to low/high temperatures when compared to the wild types. Unexpectedly, all of the mutants showed a higher tolerance to high temperatures than the wild types. The BW084 and BW312 mutants were less tolerant to frost than the wild type, but 522DK had a similar frost tolerance as the reference wild-type cultivar
Disturbances in the Biosynthesis or Signalling of Brassinosteroids That Are Caused by Mutations in the HvDWARF, HvCPD and HvBRI1 Genes Increase the Tolerance of Barley to the Deacclimation Process
Tolerance to deacclimation is an important physiological feature in plants in the face of global warming, which is resulting
in incidents of increases in winter temperatures. The aim of the work was to explore how disturbances in the signalling and
synthesis of brassinosteroids (BR) influence the deacclimation tolerance of barley. One group of mutants and their reference
cultivars (Bowman and Delisa) was cold-acclimated, deacclimated and then tested for frost tolerance at − 12 °C. After cold
acclimation, the second group of plants was additionally exposed to frost (− 6 °C) and then, deacclimated and tested for frost
tolerance at − 12 °C. The deacclimated brassinosteroid mutants were characterised by an increased tolerance to frost, and
consequently, had a higher tolerance to deacclimation than their wild-type cultivars. The mechanism of this phenomenon may
be partly explained by analysing the hormonal homeostasis in the crowns. For all of the tested plants, a characteristic feature
of the response to the deacclimation phase was an increase in the growth-promoting hormones and abscisic acid compared
to the cold acclimation phase. The increase was greater in the BR-deficient (BW084) and BR-insensitive (BW312) mutants
compared to the Bowman reference cultivar. Mutant 522DK was characterised by a lower accumulation of total cytokinins
and gibberellins as well as an enhanced auxin deactivation compared to the Delisa. In the second group, when the plants were
exposed to a temperature of − 6 °C before deacclimation, the hormonal homeostasis was further altered in both the mutants
and reference cultivars, but all of the mutants had a higher frost tolerance than the wild types