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    Wyświetlanie 1-4 z 4
    Tytuł:
    Analysis of Tourism Service Quality in Kołobrzeg Region by Means of Time Series Models
    Autorzy:
    Dłubakowska-Puzio, Ewa K.
    Karpuk, Michał
    Puzio, Kamil
    Powiązania:
    https://bibliotekanauki.pl/articles/633129.pdf
    Data publikacji:
    2012-12-01
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    The aim of the given paper is to present the analysis of tourism services by means of time series models and forecasting of evaluation of tourism services. Tourism services are analysed according to various parameters: hotel stay price, hotel services quality (such as cleanness of rooms, check-in, information provision etc.), catering quality and medical service quality. The research has been undertaken on the basis of responses of foreign guests of 13 hotels in Kołobrzeg region taken from 1400 questionnaires divided according to age and sex of respondents. Various econometric models were used for the analysis of statistic regularities. First, customers evaluated quality of their stay in hotels. These data were examined during the 2006-2009 time period as a stochastic process. It was found that the processes are nonstationary, that is why the ARIMA (1,1,1) model was used in the study. On the basis of the analyses and prognoses one can deduce that models of time series make it possible to estimate a tendency that occurs for an analysed parameter, however misprediction is quite possible to appear (up to 30 %). Similar results were achieved during the analysis of evaluation of hotel stay quality on the basis of sex of respondents. One should point out that an average value of male evaluation rate is higher than an average value of female evaluation rate. Time series for analysed variables were integrated into level I(1). A certain co-integrational connection was found between the evaluation of hotel stay and number of stays in a given hotel, where tourists that have already visited a given hotel for several times presumably give a high evaluation rate of hotel stay quality. The result of the analysis of long-term relation between hotel stay and duration of check-in is presented in high mutual dependence of hotel evaluation rate on evaluation of check-in duration. A hotel stay price influences hotel stay evaluation in a negative way, but catering and medical services are considered as standard and do not have any particular influence on hotel stay evaluation. The undertaken study shows that methods that take into account time series can be successfully used in analysis of parameters of tourist comfort and in evaluation of hotel services.
    Źródło:
    Comparative Economic Research. Central and Eastern Europe; 2012, 15, 4; 31-44
    1508-2008
    2082-6737
    Pojawia się w:
    Comparative Economic Research. Central and Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary Tests of Innovative Eco-Friendly Furfuryl Resins and Foundry Sand Mixtures Based on These Resins
    Autorzy:
    Kamińska, Jadwiga
    Puzio, Sabina
    Angrecki, Michał
    Stachowicz, Mateusz
    Łoś, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/123922.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    loose self-hardening sand
    furfuryl resin
    environmental protection
    mechanical tests
    casting surface quality
    Opis:
    The foundry industry in Poland and EU member states is growing steadily. The alloys based on ferrous metals (cast steel and cast iron) largely contribute to this upward trend. Currently, foundries are facing the problem of increasing requirements, which enforce the production of castings characterized by high dimensional accuracy and surface smoothness with parallel elimination of casting defects. Castings are mostly made in moulding sand mixtures, which are also subject to more and more stringent requirements to meet the above-mentioned casting acceptance conditions. Additionally, moulding sands should ensure adequate mould stiffness to avoid the risk of dimensional deformations during the pouring of liquid metal to this mould and casting solidification. For these reasons, the production of this type of castings has been dominated by loose self-hardening sands with furfuryl resin, commonly called furan sands. In the group of self-hardening sands with synthetic resins, loose self-hardening sands with furfuryl resin enjoy the greatest popularity. What accounts for this fact is the high level of the reclamability of these sands, the possibility of obtaining castings with high dimensional accuracy, the ability to make intricate moulds and cores, the binding process taking place at ambient temperature, and low content of binder. Unfortunately, this technology also has some disadvantages, which include short lifetime of the sand mixture, harmful gases emitted from the sand, and currently also high cost of the sand mixture. The anticipated tightening of the environmental protection regulations in the EU countries, including limiting the content of free furfuryl alcohol in resins (<25% by mass) and reducing the emission of furfuryl alcohol, formaldehyde and BTEX compounds at workplaces, necessitated the development of a new generation of furfuryl resins friendly to the environment. The article compares the results of testing the strength properties of foundry moulding sands using two types of resins, i.e. the resin of a new generation synthesized by Grupa Azoty JRCh and a commercial resin used in the foundry industry. Additionally, derivatographic studies of the above mentioned sand mixtures were conducted, and the loss on ignition and the amount of gases emitted by the sand mixture were determined. Melting was also carried out to study the impact of the resin used on the surface quality of iron castings.
    Źródło:
    Journal of Ecological Engineering; 2019, 20, 9; 285-292
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of the Addition of Bentonite Clay to Traditional Sand Mixtures on the Surface Quality of Iron Castings
    Autorzy:
    Kamińska, Jadwiga
    Puzio, Sabina
    Angrecki, Michał
    Stachowicz, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/123084.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    bentonite
    bentonite clay
    traditional sand mixtures
    casting surface quality
    Opis:
    Successful casting demands that during pouring of the foundry mould with molten metal the mould cavity suffers no deformation. This, in turn, demands the use of binding materials that can give the base sand adequate strength. The main bonding materials are clay binders. The foundry industry uses minerals rich in clay, such as kaolinite, halloysite, hydromica, montmorillonite, polygorskite, vermiculite and allophane. Due to their binding capacity, montmorillonites are the most interesting minerals of all the plastic clay rocks. The basic clay rock containing montmorillonite, used as a common binding material for traditional foundry sand mixtures, is bentonite. The domestic demand for raw bentonite materials is almost entirely satisfied by imports from Slovakia, Turkey, Italy, Germany and the Czech Republic, in order of import size. In Poland, the bentonite deposits occur in very small quantities. The exploitation of bentonites is carried out only in the Krzeniów deposit, where they constitute a mineral accompanying basalt. Much more common are bentonite clays containing in addition to smectites also a large amount of other clay minerals. The article presents the results of studies of the physico-chemical and mechanical properties of moulding sand mixtures containing pure bentonite, pure clay or hybrid bentonites which are a bentonite-clay mixture. Melting was also carried out to determine the effect of the type of binder on the surface quality of iron castings.
    Źródło:
    Journal of Ecological Engineering; 2020, 21, 1; 160-167
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przekazy medialne jako mechanizmy kształtowania społecznej oceny polityków na przykładzie polskich wyborów prezydenckich w 2015 roku
    Media coverage as mechanisms for shaping the social assessment of politicians on the example of the Polish presidential elections in 2015
    Autorzy:
    Puzio, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/585456.pdf
    Data publikacji:
    2019
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    media, election campaign, presidential election 2015
    media, kampania wyborcza, wybory prezydenckie 2015
    Opis:
    The main purpose of the presented article was to create a detailed analysis of media messages understood as mechanisms for supporting or worsening the social assessment of politicians and political parties during election campaigns. The author's research field was the Polish presiden-tial campaign of 2015. The first part of the study was devoted to the phenomenon of the media-tization of social and political life. Then, as part of the campaign's characteristics, the division of Polish media into mainstream media and right-wing media was presented, as well as their way of presenting the candidacy of Andrzej Duda and the Law and Justice party as a supportive or disavowing action. This confirms the author's thesis that the Polish presidential campaign of 2015 became a textbook example of the phenomenon of media bias during a permanent political battle. In the conclusion of the presented analysis, the author states that the actions of the favou-rable media can contribute to the electoral victory and the improvement of the politician’s image, despite the spectacular reluctance of the media hostile to him.
    Głównym celem prezentowanego artykułu było dokonanie szczegółowej analizy przekazów medialnych rozumianych jako mechanizmy wsparcia lub pogorszenia społecznej oceny polityków i ugrupowań politycznych w trakcie kampanii wyborczych. Polem badawczym autora była polska kampania prezydencka z roku 2015. Pierwsza część opracowania została poświęcona zjawisku mediatyzacji życia społeczno-politycznego. Następnie, w ramach charakteryzowanej kampanii, przedstawiony został podział polskich mediów na media mainstreamu i media prawicowe, jak również ich sposób prezentowania kandydatury Andrzeja Dudy oraz partii Prawo i Sprawiedliwość, jako działania wspierającego lub dezawuującego. Potwierdza to tezę autora, że polska kampania prezydencka z 2015 roku stała się podręcznikowym przykładem zjawiska stronniczości mediów podczas permanentnie trwającej walki politycznej. W ramach konkluzji przedstawionej analizy autor stwierdza, że działania mediów przychylnych przyczynić się mogą do wyborczej wygranej i polepszenia wizerunku polityka, pomimo spektakularnej niechęci wrogich mu mediów.  
    Źródło:
    Studia Wyborcze; 2019, 28; 39-54
    1898-0082
    Pojawia się w:
    Studia Wyborcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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