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    Wyświetlanie 1-3 z 3
    Tytuł:
    Combustability of building products versus fire safety
    Autorzy:
    Fangrat, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/200506.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    building performance
    buildings fire safety
    building products
    fire properties
    Euroclass
    wydajność budowy
    bezpieczeństwo pożarowe
    wyroby budowlane
    Euroklasa
    Opis:
    The combustion process is described and analysed based on the experimental results in the context of building fire safety. Data are obtained by means of five standard methods: ISO 5657 ignitability test, ISO 5657 cone calorimeter, ISO 9705 room corner test, EN ISO 1716 small calorimeter, and EN ISO 1182 small furnace. Various categories of building products were tested: cellulose based products (particle boards, plywoods), solid wood, floor coverings, concrete, ceramics, insulations (thermal and/or acoustic), boards (wall/ceiling), mortars, adhesives, and thin coatings. The studied products exhibited very different fire properties from non-combustible to easily combustible. In order to more effectively differentiate non-combustibles and combustibles within building products, the modified heat of combustion was calculated using all test results according to EN ISO 1716 and EN ISO 1182. The revision of criteria for Euro class A1 and A2 is proposed to obtain more realistic reaction-to-fire evaluation. In conclusion, it is advised to use single limit for heat of combustion for A1 and A2 Euro class. The proposed approach for modified heat of combustion is a convenient tool for the fast and cost-effective initial test method for non-combustibility evaluation and seems to be the proper method for distinguishing between non-combustibles and combustibles within building products. It is a better reflection of the real physical process of combustion than the current one. The third A1 criterion is questionable, regarding time to auto-ignition in EN ISO 1182 cylindrical furnace. The measurement for gross heat of combustion by EN ISO 1716 method is proposed for all Euro classes of building products with different limit values.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 709-717
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Scientific basis and rules of thumb in civil engineering: conflict or harmony?
    Autorzy:
    Czarnecki, L.
    Gemert, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/200291.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    building performance
    appraiser
    matrix of the science of construction
    rule of thumb
    durability
    complexity
    diversified development
    wydajność budowy
    rzeczoznawca
    zasada praktyczna
    trwałość
    złożoność
    rozwój zróżnicowany
    Opis:
    Science and engineering intermingle in the area of construction. Engineering works, often of great dimensions and design life cycle of many decades, have to be designed on a scientific basis since the safety of hundreds of users depends on their design. The task of scientific institutions is to define the construction performance within categories that correspond to the contemporary level of knowledge and technology. A construction appraiser who speaks out in a way that ensures unquestionable competence about the performance of elements and buildings (existing and under construction), should be convinced of the scientific basis of his opinions. A comparison of construction sections vs. basic requirements presents an archetype of the science of construction. A matrix of the science of construction reveals its multi-faceted nature; if related to time – the issue of durability has to be considered, and if related to the scale – the complexity. Defining the construction performance in terms of technical features is a constant search for a relationship between the material model and the usability model of a building. The construction industry uses a lot of “rules of thumb”, more than any other sector of technology. In the era of computer-aided design, CAD, and building information modelling (BIM), those rules of thumb remain invaluable verification tools.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 665--673
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Expected employees’ competencies in the process of launching new products in JZR Ltd
    Autorzy:
    Gumiński, Adam
    Dohn, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/27313437.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    human resources management
    employees competencies
    work performance
    machine building enterprise
    new products
    zarządzanie zasobami ludzkimi
    kompetencje pracowników
    wydajność pracy
    przedsiębiorstwo budowy maszyn
    nowe produkty
    Opis:
    Purpose: The article presents the research results concerning employees’ competencies in JZR Ltd. (Jastrzębskie Zakłady Remontowe Ltd.). Human resources management directly affects the operational results of the activity of a manufacturing company. The managers need to recruit employees possessing a high level of competencies. The key expected result is better economic effects. The JZR Development Programme is a good example of the complexity of processes that should be taken into account in good decisions in the area of human resources management in an activity of a manufacturing company. The main purpose of the research was to identify and analyse key employees’ competencies needed to launch new products on the market. The specificity of machine-building enterprises determines the scope and scale of the necessary activities for efficient and effective human resources management. Design/methodology/approach: The objectives of the research were achieved by the analysis of a recruitment process executed in the JZR Development Programme and a questionnaire survey within the project "Development of the skills ecosystem in four countries of the Visegrad Group". Findings: It was found that key elements determining the productivity level of the JZR Development Programme are the high technical and soft competencies of new employees. A risk analysis is also of high magnificence in so complex and capital-consuming projects. Research limitations/implications: The research limitations are due to the complexity of the system, the difficulties arising from the specificity of the mine environment, the lack of the possibility of ongoing diagnostics of the entire infrastructure (e.g. pipeline specification, the ability to measure sediment in water galleries, smooth change of the speed of drive mechanisms, etc.). Practical implications: The analysed investment programme requires workers specializing in the construction and designing of scraper conveyors, belt conveyors and powered supports. Soft skills such as teamwork skills or knowledge of project management methods and tools are highly needed as well. The activity of JZR Ltd. needs specialized software in the field of machine construction in terms of technology and design. Social implications: The expected requirements are strictly connected with IT skills which should be developed within the education process, especially at technical universities. Manufacturing companies like JZR Ltd. need to participate actively in creating the profile of a graduate at universities. Another possible activity could be achieved by cooperation with a potential candidate for work in a manufacturing company. Originality/value: The value of the research is the identified requirements in the range of analyzed technical and soft competencies which could be treated as a benchmark for similar complex manufacturing development projects. According to what was analyzed in the area of literature review we were able to find, there are no specific studies referring and reporting on employees’ competencies required in projects in mining industry.
    Źródło:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2023, 168; 143--154
    1641-3466
    Pojawia się w:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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