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The bootstrap method is a well-known method to gather a full probability distribution from the dataset of a small sample. The simple bootstrap i.e. resampling from the raw dataset often leads to a significant irregularities in a shape of resulting empirical distribution due to the discontinuity of a support. The remedy for these irregularities is the smoothed bootstrap: a small random shift of source...
Hydraulic power systems are widely used in heavy machinery. Safety of such a systems have a major importance due to the fact that any failure may cause environmental contamination or serious injury. One of the component which protects hydraulic drive systems against excessive rising of working pressure is a safety valve which aim is to maintain pressure in the systems below acceptable level. Pressure...
Exhaust systems are susceptible to in-service wear because of their exposition to the very aggressive corrosive environment. Various stainless steels grades (mostly ferritic and austenitic, but also martensitic and duplex) and protective coatings are currently used for exhaust system elements to increase their aestetics and corrosion resistance. This article focuses on evaluation and comparison of...
One of main purposes of every enterprise is to satisfy the buyer, therefore customer service is perceived as the capability or the ability of satisfying customers expectations and requirements. The present article was devoted to the issue of the quality assessment of customer service assuring the data security on the basis of pharmacies network case study of. The survey was based on prepared questionnaire...
Food safety means all the conditions that have to be met and actions that have to be taken at all stages of food production or sales to protect human health and life. Studies have demonstrated that organic food is considered by consumers to be healthier and safer than conventional food produced by means of intensive farming methods. In this context, the interest in organic food among both consumers...
The subject of the article is concern towards hydraulic systems safety improvement by elimination or/and reduction the possible mistakes which could be the reason of operator accidents and damage of the machine and surroundings. The most typical situation which could be present during hydraulic system operation and maintenance have been analysed and classified to help understand its correlation with...
Managing quality of education is difficult and diversified task. Certainly, at the very center of quality assurance is experience that students and graduates get throughout their education course. One of the factors influencing these experiences are teaching methods. The objective of the paper is to assess the experience of Workplace Safety and Hygiene master program students of with regard to teaching...
A multi-floor manufacturing in residential districts of huge city promotes decongestion of urban traffic and satisfy the population’s demand for essential goods. City manufacturing and its supply chain entail several challenges related to the sustainable development of a large agglomeration. Environmental problems impose significant constraints on such manufacturing activities and production waste...
To consider the optimization of the supply chain, a company operating in the cosmetics and hygiene industry was selected. It is a typical production company with foreign capital, working on entrusted material which entirely belongs to the parent company. The company management, purchasing and sales department are located at the parent company, the Polish branch is entrusted only with production and...
In recent years, the research of nodular cast iron has been focused on increasing fatigue resistence. In the paper, two types of alloyed nodular cast irons have been investigated – SiMo-nodular cast iron alloyed by 4% of silicon and 1% of molybdenum and SiCu-nodular cast iron alloyed by 4% of silicon and 1.5% of copper. SiMo-nodular cast iron is suitable for high-temperature applications, for example...
Possibilities of use of degassing and carbon gas in industry. Degassing gas represents a waste during coal mining so far and this issue is not effectively solved in Ostrava region up till now Ecological aspects, safety, economic aspects. Coal deposits represent a special case in which the deposit is both a source of coal and reservoir of gas. For the thing is that, in the process of coalification...
Steels of the ARMOX class belong into a group of the fine-grained, increased strength steels, which are manufactured by the quenching and low tempering procedure, with intensive thermo-mechanical treatment at high temperatures. Combination of the heat and mechanical treatments provides for the fine grains and exceptionally good properties of these steels, while the low-tempering enables relatively...
In this paper, the results of a research on thin-plate single-lap connections are presented. Such type of connections is popular in steel roofs made of trapezoidal plates and other thin-walled elements. In case of a building safety it is necessary to ensure that materials with proper durability and ductility are used. Connections are one of the most important components in such structures, particularly...
Safety of use of the buildings refers i.a. to ensuring appropriate hygienic and sanitary conditions and also health conditions. According to the EU Directive on the energy performance of buildings, there is a need to define the conditions for the classification of objects in terms of indoor microclimate requirements. Evaluating the quality of the interior environment in buildings and specifying the...
The management of contemporary health systems is a problem of many countries, which consists not only of issues related to the establishment of the roles of institutions involved in their functioning, the allocation of funds, asymmetry of information, or access to health services. Problems of the all system often result from faulty management of particular health institutions, and more specifically...
The article presents the Job Safety Analysis for a Glass Production Line Operator's Workstation in the context of the Risk Management Process. The main tasks performed by the worker have been defined, and then risks associated with each activity and preventive actions have been identified. On this basis, for the Health & Safety risk analysis and assessment, criteria have been established, which...
The concept of corporate social responsibility (CSR) since several dozen years has been recognized as one of the most important solutions used by companies that want to build competitive advantage through concern for economic effects, people and the environment. Important role in the management of CSR by these companies is the implementation of its standards and norm and their reporting. However,...
The objective of this paper is to present and verify the decision-making model which makes it possible to streamline the occupational hazards that tend to occur in the work environment, according to the adopted decision-making criteria. In this way, it will be possible to reduce inconsistencies of decision-makers deciding to focus their preventive measures upon the most important hazards, in the situation...
Provision of professional work is very often associated with the worker's exposure to the occurrence of various types of threats. Some of the most important include those related to physical overload. Excessive strain on the musculoskeletal system can lead to muscle, ligament and tendon injuries. Therefore, it is necessary to evaluate the workplace in terms of its ergonomics. This paper presents the...
In this paper, the authors have discussed the subject of fire and explosion hazards during the operation of a modern ship's high-power internal combustion engines. The causes of the occurrence of and the methods of preventing explosions in the starting manifolds of modern piston combustion engines equipped with a pneumatic starting system, with starting valves on the cylinder heads, have been specified...
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