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Wyświetlanie 1-15 z 21
Tytuł:
Reverse engineering-inspired parametric 3D geometry model of marine propeller
Autorzy:
Zheng, Long
Chen, Shunhuai
Chen, Xinyu
Ji, Shengchen
Powiązania:
https://bibliotekanauki.pl/articles/34615041.pdf
Data publikacji:
2023
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine propeller
geometric modeling
parametric 3D geometry model
surface reconstruction
Opis:
In this study, an effective parametric 3D geometry model of a propeller was established with the aid of reverse engineering. The goal is to reduce the free parameters while automating the modelling of the propeller. The process of building the parametric model begins by generating an initial point cloud by defining the feature matrix associated with the propeller blade profile shape. Subsequently, the initial point cloud is deformed and refined by the deformation feature matrix and resampling. Finally, a 3D geometry model of the propeller is generated by surface reconstruction. The model can be built automatically by interactively modifying the feature matrices. Two numerical analyses illustrate the performance of the parametric 3D geometry model. Specifically, two propellers are constructed using the proposed model to estimate the shape error between the reconstructed propellers and the original offset of the propellers. These propellers are selected as research objects to determine the hydrodynamic performance error between the propeller constructed by the proposed model and a benchmark propeller. According to the results of the numerical study, the parametric 3D geometry model can precisely reconstruct the aforementioned geometry within a valid error range. The hydrodynamic error analysis demonstrates that the geometric inaccuracy from the reconstructed model has less impact on the propeller performance. This indicates that the model described in this study is generalised and robust. Moreover, some uncommon propeller CAD models were generated in batches using the parametric 3D geometry model.
Źródło:
Polish Maritime Research; 2023, 3; 35-47
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technological transformation in journalism: Journalists’ techno-cultural experiences from actor-network perspective
Autorzy:
Şendur Atabek, Gülseren
Powiązania:
https://bibliotekanauki.pl/articles/32443964.pdf
Data publikacji:
2023-06-29
Wydawca:
Uniwersytet Warszawski. Wydział Dziennikarstwa, Informacji i Bibliologii
Tematy:
journalism technologies
techno-culture
technological change
actor-network theory
journalism history
Opis:
Objective: Technological transformations have profoundly changed the journalism professions. These transformational processes have been experienced by journalists in a techno-cultural environment where their personal and collective memories were shaped. This study employs oral history as the data collection technique in order to explore the details of this techno-cultural change from the actor-network theory (ANT) perspective. Research methods: A sample of 28 senior Turkish journalists were interviewed about their experiences on the technological transformations in their professional life. The transcribed text from these narrations were qualitatively analyzed by NVivo. Results: Journalists agreed that their work was more satisfactory during their past career, and they had faced some difficulties in new forms of technical practices. They also remembered how they were able to tackle some unexpected technical problems by introducing creative inventions. They generally acknowledged the negative effects of technology on the job cuts. Cognitive value: Interviewees’ narrations display the details of the change in journalism professions.
Źródło:
Studia Medioznawcze; 2024, 1; 35-47
2451-1617
Pojawia się w:
Studia Medioznawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tryb zwoływania rad familijnych opiek „mniejszych” na podstawie akt łódzkiego i zgierskiego magistratu do 1876 roku
Convening procedure of the family councils for the „minor” guardianships based on the magistrates’ files from Łódź and Zgierz until 1876
Autorzy:
Machut-Kowalczyk, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/39990579.pdf
Data publikacji:
2023
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:
rada familijna
opieka
Prezydent Miasta Łodzi
Kodeks Cywilny Królestwa Polskiego
sąd pokoju
Królestwo Polskie
family council
guardianship
President of Łódź
Civil Code of the Kingdom of Poland
court of peace
Kingdom of Poland
Opis:
Rady familijne dla opiek „mniejszych” zwoływane były przez prezydentów albo burmistrzów (w miastach) oraz wójtów (na wsi). Akta pupilarne zachowane w Archiwum Państwowym w Łodzi dostarczają informacji o zwoływaniu tych organów przez burmistrzów i prezydentów w Łodzi i Zgierzu w latach 1825–1876. W praktyce bardzo często rady familijne odbywały się bez wcześniejszego wyznaczenia terminu. Nawet w przypadku wyznaczenia terminu posiedzenia, suplikanci chętnie sami informowali i zbierali członków rady familijnej. Zapozwy magistrat wystawiał bardzo rzadko. Uproszczona procedura mogła mieć wpływ na zmniejszenie kosztów postępowania.
Family councils for the „minor” guardianships were convened by presidents or mayors (in the cities) and mayors (in the countryside). Custodial files in the State Archive in Łódź inform us about convening family councils by presidents and mayors in Łódź and Zgierz in years 1825–1876. Conveying family councils without prior notice was a common practice. Even when the date of meeting was set in advance, the supplicants gladly informed and gathered members of the family councils by themselves. Official calls were set up by magistrate very rarely. Simplified procedure could result in reduction of the proceedings costs.
Źródło:
Studia z Dziejów Państwa i Prawa Polskiego; 2023, XXVI, 26; 35-47
1733-0335
Pojawia się w:
Studia z Dziejów Państwa i Prawa Polskiego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nieprawidłowości w sprzedaży łączonej i wiązanej kredytów mieszkaniowych i ubezpieczeń
Irregularities in Bundling and Tying Practices Home Loans and Insurance
Autorzy:
Nowak, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/36095538.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
mortgage
cross selling
insurance
bancassurance
consumer protection
Opis:
Banks, as part of cooperation with insurance companies, offer customers insurances. The of insurance is securing loan repayment. Polish Financial Supervision Authority (KNF) issued a number of reports on this subject. Identified by KNF numerous irregularities and the previous nonregulation resulted in 2014 r. publish Recommendation U. After the Recommendation U the national legislator as a result of the implementation of the directives introduced many significant changes in the area of bancassurance, which fundamentally changed the way banks offer insurance and strengthened the position of consumers. The idea of offering home loans with insurance is currently being realized as part of bundling and in certain situations also in tying practices and the position of the consumer is strengthened for example by information obligations imposed on banks. The main purpose of the article is to present the definition of the concept, forms and the scope of its application by the search banks, causes and consequences of improper bundling and tying practices and to indicate repair solutions. The presented objective of the project fits in with the research gap in the literature on the subject. Currently, there are no studies that would analyze the consequences for consumers of bundling and tying practices insurance with a home loan. Methodology. In theoretical part of the article author used analysis of the literature and a review of legal regularions. In order to determine the nature of irregularities occurring in the process of offering insurance by banks author used analysis how banks offers mortgage credit with insurance. Author also used in the article several examples of complains submitted by consumer to Financial Ombudsman in the years 2017–2021. The result of the research. The research allowed to notice current irregularities that may indicate a violation of consumer interests on the bancassurance. The identified irregularities are occuring for example in offering insurance that is unsuited to the client’s needs, misleading or concluding a contract basing only verbal information. The mismatch of loan repayment insurance is largely due to deficiencies in the credit process.
Źródło:
Finanse i Prawo Finansowe; 2022, 2 (Numer Specjalny); 35-47
2391-6478
2353-5601
Pojawia się w:
Finanse i Prawo Finansowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prawda i uczciwość w filozofii politycznej Ayn Rand
Autorzy:
Drelich, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/34112017.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Ayn Rand
liberalism
libertarianism
objectivism
philosophy of politics
liberalizm
libertarianizm
obiektywizm
filozofia polityki
Opis:
Ayn Rand was an American writer, journalist and philosopher, sometimes counted among the American radical liberalism or libertarianism. The primary purpose of the article is to indicate how Rand understood the value of truth, how the virtue of honesty is related to it and how both of them have influenced her political philosophy. The first part of the article presents the understanding of truth in Rand’s political philosophy. The second part is devoted to the foundations of her interpretation of truth that we can find in the doctrine of the libertarian objectivist school. The third part shows the practical dimension of truth by showing its place in the life of an individual human being. The fourth part describes honesty as a virtue responding to the need for truth. The article is the result of an analysis of the content of the most important Rand’s texts, in which she took up the issues of truth and honesty. The main method used in the study was the hermeneutic-phenomenological one. Thanks to that it was possible to extract the meaning of the conceptual categories used by Rand with their theoretical foundations.
Ayn Rand była amerykańską pisarką, publicystką i filozofką, zaliczaną niekiedy do amerykańskiego radykalnego liberalizmu czy też libertarianizmu. Zasadniczym celem niniejszego artykułu jest wskazanie, w jaki sposób Rand rozumiała wartość prawdy oraz jak wiązała z nią cnotę uczciwości, a także jaki wpływ oba czynniki miały na jej filozofię polityczną. W pierwszej części artykułu zaprezentowano sposób rozumienia prawdy w filozofii politycznej Rand. Część drugą poświęcono podstawom jej interpretacji prawdy, jakie można znaleźć w doktrynie libertariańskiej szkoły obiektywistycznej. W części trzeciej wskazano praktyczny wymiar prawdy przez ukazanie jej miejsca w życiu jednostki. część czwarta zawiera charakterystykę uczciwości jako cnoty będącej odpowiedzią na potrzebę prawdy. Artykuł jest efektem analizy treści najważniejszych tekstów Rand, w których podejmowała problematykę prawdy i uczciwości. Zastosowano metodę hermeneutyczno-fenomenologiczną, dzięki której wydobyto sens kategorii pojęciowych zastosowanych przez Rand i dokonano wglądu w jej teoretyczne podstawy.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio K – Politologia; 2021, 28, 1; 35-47
1428-9512
2300-7567
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio K – Politologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Balance in the Turbulent World of Economy
Autorzy:
Jakimowicz, A.
Juzwiszyn, J.
Powiązania:
https://bibliotekanauki.pl/articles/1388526.pdf
Data publikacji:
2015-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
89.65.Gh
47.27.Jv
47.15.G-
47.35.-i
47.32.C-
01.65.+g
Opis:
The stock market balance can be presented as a result of mutual effect of the supply and demand on the market. This creates high-frequency dynamics of prices for shares, what in turn leads to the appearance of the three-dimensional rotary trajectories of the market. The 3-D space is a Cartesian product: prices, volumes, and time. In this space whirling vectors form rotary-spiral trajectories and, they in turn, determine in the appropriate time periods side surfaces of solids of revolution, which rotate as well. Perpendicular projections of rotary trajectories on planes with standing out time axis cause that economic rotary phenomena are depicted on the mentioned planes by means of flat zigzags. Double rotating of economic vectors resembles precession movement. This is the precession movement which guarantees oscillating-rotating vectors around the hypothetical line of economic balance. Economic vectors are always set in rotary motion mainly by stimulating the vectors of demand and supply. Dynamically changing volumes of the mentioned forces cause that permanent state of economic balance practically do not exist in market reality. In the modified by the authors cobwebbed model states of fragile balance are explained by means of precession and accompanying it nutation. The rotary movement occurs universally in our world. The effects of vortexes from the world of nature are extremely quickly reflected in changing in chaotic way forces of demand and supply which in turn are the main generators of economic vortexes. Then the relationship is unambiguous and can be expressed by a short general statement claiming that vortexes generate vortexes regardless of the environment in which they occur. The resemblance between the rotary trajectories observed in hydrodynamics and the stock market rotary-spiral trajectory was the inspiration of the work for creating the econophysical analogue of the so-called stock market Reynolds number (R_{e}). The academic community has long sought a description of the phenomenon of turbulence in financial markets, and this article is an attempt to face this challenge. The original idea behind developing an economic equivalent of the Reynolds number was that market vectors of volumes, prices and time components can be treated as particles of a stream of liquid flowing through a pipe of a given cross-section. The Reynolds number, defined in this way, can be applied in research into the dynamics of stock exchange indices and, in particular, for the development of short-term warning forecasts. Additionally, it can be treated as a coefficient confirming (or rejecting) long-term stock market predictions.
Źródło:
Acta Physica Polonica A; 2015, 127, 3A; A-78-A-85
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lie Symmetry Reductions, Exact Solutions and Conservation Laws of the Third Order Variant Boussinesq System
Autorzy:
Yaşar, E.
Giresunlu, İ.
Powiązania:
https://bibliotekanauki.pl/articles/1401513.pdf
Data publikacji:
2015-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.30.Ik
02.30.Jr
47.35.Fg
Opis:
The Lie group method is applied to the third order variant Boussinesq system, which arises in the modelling of the water waves. The symmetry reductions and invariant solutions are obtained with respect to Lie point symmetry generators of the underlying system. In addition, we derive conservation laws of the variant Boussinesq system.
Źródło:
Acta Physica Polonica A; 2015, 128, 3; 252-255
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chirality Induced by Magnetoelectrolysis
Autorzy:
Mogi, I.
Aogaki, R.
Morimoto, R.
Watanabe, K.
Powiązania:
https://bibliotekanauki.pl/articles/1202308.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
47.35.Tv
Opis:
Surface chiral formation of Cu films was investigated in the galvanostatic electrodeposition under a magnetic field of 5 T perpendicular to the electrode surface. The surface chirality was examined by electrochemical voltammograms of a chiral molecule of tartaric acid. The chiral induction depended on the magnetoelectrodeposition time, and this implied that the formation of the self-organized state of magnetohydrodynamic flows around the electrode is crucial for the chiral formation.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 380-381
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magneto-Rotational Symmetry in Chiral Magnetoelectrodeposition
Autorzy:
Aogaki, R.
Morimoto, R.
Sugiyama, A.
Mogi, I.
Asanuma, M.
Miura, M.
Oshikiri, Y.
Yamauchi, Y.
Powiązania:
https://bibliotekanauki.pl/articles/1202193.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
47.35.Tv
Opis:
The chiral activities of electrodeposited surfaces fabricated under vertical magnetic fields were theoretically examined. Chiral activities arise from the micro-vortexes, called micro-MHD (magnetohydrodynamic) flows (MMF), activated under a tornado-like vortex called vertical MHD flow (VMF). It was concluded that the interaction between MMF and VMF determines the activities.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 378-379
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
X-Ray Photoelectron Spectroscopy - Methodology and Application
Autorzy:
Papis-Polakowska, E.
White, R.
Deeks, C.
Mannsberger, M.
Krajewska, A.
Strupinski, W.
Płocinski, T.
Jankowska, O.
Powiązania:
https://bibliotekanauki.pl/articles/1364037.pdf
Data publikacji:
2014-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.60.-i
81.05.ue
68.47.Gh
68.35.bg
68.35.bj
Opis:
The crucial measurements aspects of X-ray photoelectron spectroscopy, such as chemical state analysis, depth profiling, mapping, and thickness calculation have been presented. The metal alloys, $Ti_2O_5$, graphene and type-II InAs/GaSb superlattice structures have been examined by using the new Thermo Scientific K-Alpha X-ray Photoelectron Spectrometer.
Źródło:
Acta Physica Polonica A; 2014, 125, 4; 1061-1064
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pulsed Power Application of TDI-Type Pseudospark Switches
Autorzy:
Bochkov, V.
Bochkov, D.
Gnedin, I.
Panov, P.
Powiązania:
https://bibliotekanauki.pl/articles/1807939.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
52.35.Bj
52.35.Lv
52.75.Kq
52.77.-j
47.35.-i
Opis:
The module of pulsed power electrohydraulic installation equipped with a technological tank having 2 working electrodes, storing energy up to 3 kJ at average power of 10 kW was constructed and tested. As power switching elements pseudospark switches of TDI-type were used. During the tests organic materials (flax straw) were processed. In the paper various factors, affecting PSS electrodes erosion, are considered. Valuable recommendations on providing the best service time of the switches are summarized. The major object of the investigations is the development of technological system capable of providing a continuous production process with power consumption up to hundreds of kWh with large volumes (up to several tons) processed materials transportation. The process continuity substantially reduces cost of processing, simplifies design, and improves operational characteristics of the device and finally increases competitiveness of the production.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 1118-1121
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Metal Coated Diamond Crystallites by Combined Photoacoustic Effect and Photothermal Radiometry
Autorzy:
Delgadillo-Holtfort, I.
Gibkes, J.
Chirtoc, M.
Neubauer, E.
Bein, B.
Pelzl, J.
Powiązania:
https://bibliotekanauki.pl/articles/1811541.pdf
Data publikacji:
2008-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.47.Pm
43.35.Ud
78.20.Nv
65.40.-b
66.70.+f
Opis:
Photoacoustic effect and photothermal radiometry were applied to characterise the thermal properties of diamond crystallites which were coated by a Cu film, a Cr film and a Cr-Cu film. The Cu-coated diamond exhibits a considerable thermal barrier at the Cu-diamond interface which had disappeared for the crystallites with a thin bond Cr layer between diamond and Cu. The comparison of the responses of both measurement techniques reveals the non-negligible influence of the optical absorption in the visible and IR on the deduced thermal parameters.
Źródło:
Acta Physica Polonica A; 2008, 114, 6A; A-57-A-61
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface Segregation of CoPt Polycrystalline Alloy
Autorzy:
Godowski, P. J.
Ohgi, T.
Fujita, D.
Powiązania:
https://bibliotekanauki.pl/articles/2036875.pdf
Data publikacji:
2003-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.35.Dv
68.47.De
79.60.-i
Opis:
Composition-depth profiling using different emission angles of X-ray photoelectron spectroscopy showed surface enhancement of platinum concentration of the CoPt(30at%) alloy extensively annealed to 1000~K in ultrahigh vacuum. The results are compared with theoretical predictions basing on models with no crystal face dependence.
Źródło:
Acta Physica Polonica A; 2003, 104, 1; 35-44
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
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