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Wyświetlanie 1-12 z 12
Tytuł:
The concept of building a digital transformation model for enterprises from the SME sector
Koncepcja budowy transformacji cyfrowej przedsiębiorstwa dla przedsiębiorstw sektora MŚP
Autorzy:
Szopa, Łukasz
Cyplik, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/361800.pdf
Data publikacji:
2020
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
digital transformation model
digital index
SME sector
model transformacji cyfrowej przedsiębiorstwa
indeks cyfrowy
sektor MŚP
Opis:
Background: The ecosystem of digital solutions and technologies that is a part of digital economy, present in most small and medium-sized enterprises, can be considered underdeveloped and outdated, which has a direct negative impact on the effectiveness of the implementation of activities at the operational level. An important element of building a competitive advantage of small and medium-sized enterprises may be the implementation of a model for their digital transformation as an element of a wider concept of digital supply chains. Methods: The article uses the method of „case study" and questionnaire research to develop a model of digital transformation of enterprises from the SME sector. It is worth pointing out that small and medium-sized enterprises are the most numerous group of institutional participants in the modern market economy. The work uses the concept of the Digitization Index and quality tools, which include, inter alia, Ishikawa diagram and SWOT analysis. The research environment was a manufacturing company from the furniture industry, also acting as the main coordinator between all the links with which it cooperates within the supply chain Results: The article describes the phenomena of digital transformation, which is the main driving force of the digital economy and digitization, which is an indispensable element of transforming business models in accordance with its principles. The final effect of digital transformation of supply chains, which is the creation of new business models based on the properties of digital solutions, called digital supply chains, was also characterized. As a result of the considerations, a concept for building a digital transformation model for enterprises in the SME sector was proposed. Conclusions: The model of digital transformation of enterprises in the SME sector should include both the assessment of the current level of digitization of the enterprise as well as the proposal of its digital transformation. Increasing the degree of digitization of the enterprise surveyed as part of the case study will allow, in the long run, to achieve an increase in the effectiveness of the tasks performed, mainly in terms of reducing the time of their execution and improving the efficiency of information flow between all participants in the supply chain.
Wstęp: Ekosystem rozwiązań i technologii cyfrowych wchodzący w skład gospodarki cyfrowej, obecny w większości małych bądź średnich przedsiębiorstw w większości przypadków można uznać za słabo rozwinięty i przestarzały, co wpływa w bezpośredni sposób negatywnie na stopień efektywności realizacji ich działań na poziomie operacyjnym. Istotnym elementem budowy przewagi konkurencyjnej małych i średnich przedsiębiorstw może byći mplementacja modelu przeprowadzenia ich transformacji cyfrowej jako elementu szerszej koncepcji cyfrowych łańcuchów dostaw. Metody: W artykule zastosowano metodę „case study” oraz badanie ankietowe do opracowania modelu transformacji cyfrowej przedsiębiorstw z sektora MSP. W pracy wykorzystano koncepcję Indeksu Cyfryzacji oraz narzędzia jakościowe, do których zaliczono m.in. diagram Ishikawy oraz analizę SWOT. Środowiskiem badań było przedsiębiorstwo produkcyjne z branży meblowej pełniące również funkcję głównego koordynatora, pomiędzy wszystkimi ogniwami, z którymi współpracuje w ramach łańcucha dostaw. Wyniki: W artykule opisano zjawiska cyfrowej transformacji, będącej główną siła napędową gospodarki cyfrowej oraz cyfryzacji stanowiącej nieodzowny element przeobrażania modeli funkcjonowania przedsiębiorstw zgodnie z jej zasadami. Scharakteryzowano również końcowy efekt transformacji cyfrowej łańcuchów dostaw, którym jest tworzenie nowych modeli biznesu opartych na właściwościach rozwiązań cyfrowych nazywanych cyfrowymi łańcuchami dostaw. W efekcie rozważań zaproponowano koncepcję budowy modelu transformacji cyfrowej przedsiębiorstw w sektorze MSP. Wnioski: Model transformacji cyfrowej przedsiębiorstw w sektorze MSP obejmować powinien zarówno ocenę obecnego poziomu cyfryzacji przedsiębiorstwa jak również propozycję jego transformacji cyfrowej. Zwiększenie stopnia cyfryzacji badanego w ramach case study przedsiębiorstwa pozwoli w dłuższej perspektywie czasu na uzyskanie wzrostu efektywności realizowanych zadań głównie pod kątem redukcji czasu ich wykonywania oraz poprawy sprawności przepływu informacji między wszystkimi uczestnikami łańcucha dostaw, zapewniając jednocześnie możliwość uzyskania przewagi konkurencyjnej na głównymi rywalami, którzy nie przeprowadzili cyfrowej transformacji funkcjonowania swojego modelu biznesu.
Źródło:
LogForum; 2020, 16, 4; 593-601
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leoncin – nowy polski chondryt LL4-6
Leoncin – the new LL4-6 ordinary chondrite from Poland
Autorzy:
Karwowski, Łukasz
Szopa, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1033149.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
brecciated meteorite
monomictic breccia
new meteorite from Poland
ordinary chondrite LL4-6
Opis:
In this study, the new ordinary chondrite LL4-6 from the Leoncin Community, Poland is reported. This meteorite was sold on Allegro, a Polish online e-commerce platform, to a person, who is member of the Meteoritic Society of Poland. The meteorite was sold in 2017, but originally the fall was in 2012. Finder of the meteorite from the Nowe Gniewniewice Village (Leoncin Community) claimed that the meteorite was still warm (the higher temperature was result after hit in the roof) after fall and made a whole in metal roof (which was repaired soon after the fall). For five years after fall of the meteorite, it stayed in the finder hands. The total known weight of the meteorite is 111.3 g. The main mass is in the M. Burski’s collection (~70 g). Two plates with the total mass 20 g are stored at the Earth Science Museum, Faculty of Natural Sciences, University of Silesia in Katowice, Poland. The meteorite is strongly brecciated. All clasts are rounded, reaching up to 1 cm in size. The matrix is very fine grained. The biggest as well as clasts are represented by complex olivine-feldspar chondrule. Numerous clasts do not have any chondrules or their fragments as well. The fusion crust of the Leoncin meteorite is typical, having porous and glassy (isotropic) the most external part. The glassy zone is rich in Cr-rich spinels, where relicts of unmolten olivines and pyroxenes are present. The next zone is so-called the black vein zone. The veins are represented my metallic phases or Fe sulphide. The most common mineral in the fresh meteorite is olivine, having Fo and Fa up to 69 and 31, respectively. Pyroxenes are characterised by a general chemical formulae as follow: Fs9.78–9.7 Wo44.77–44.2 En46.02–45.53. Almost all feldspars are represented by plagioclases (Ab83.5–86.76Or2.54–5.53An9.42–12.5). Metallic phases are mostly represented by kamacite, taenite and rare tetrataenite (the richest in Ni phase; 55.92–49.21 wt.%). Troilite, spinel, ilmenite, apatite and merrillite are also noted. Based on chemical composition of investigated minerals, the Leoncin meteorite can by classified as a LL ordinary chondrite. It has been confirmed by fayalite content (avg. 30.33%) as well as the forsterite content in pyroxenes (avg. 25.32%). Brecciating of the meteorite, the same mineral content of the chondrules and their matrix shows that the meteorite is an example of monomictic breccia. Metamorphic changes of the clasts, their quality, size and mineral content, together with the chemical composition of selected minerals, indicate the LL4-6 type of the meteorites. The Leoncin meteorite seems to be a regolith, that formed far from the collision place on the asteroid. This situation is confirmed by the limitation of gassy material only to the fusion crust and lack of shock changes in the minerals. The parent body might be similar to the 25143 Itokawa asteroid or has connection with the Flora family.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2020, 11; 31-44
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Datowanie metamorfizmu z początku Układu Słonecznego: wiek U-Pb apatytu z meteorytu Leoncin (chondryt zwyczajny LL5-6 o charakterze brekcji monomiktycznej)
U-Pb age of the early Solar System metamorphism by using apatite from the Leoncin meteorite (LL5-6 ordinary chondrites – monomictic breccia)
Autorzy:
Szopa, Krzysztof
Karwowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1830279.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
LA-ICP-MS
Leoncin
SEM
formation ages
meteorites
Opis:
The U-Pb system is a useful chronometer for understanding the formation history of chondritic materials. Modern studies showed that the formation ages of chondrites (4.55–4.56 Ga) effectively equal the formation age of the solar system. Recently, researchers have undertaken U-Pb isotopic studies of phosphates separated from equilibrated ordinary chondrites, which are the major hosts for U and are enriched by an order of magnitude or more relative to the bulk rock (typical U concentrations of 0.1–3 ppm in phosphates). The observed Pb-Pb model ages for these phosphates range from 4.563–4.502 Ga, with an analytical precision of 1 Ma and the U-Pb system is apparently concordant. They also argued that the Pb-Pb ages of the phosphates from several H chondrites show a negative correlation with metamorphic grade. They concluded that thermal processing of the equilibrated chondrites took place over a 60 Ma interval and grain size of the phosphates increases with the degree of metamorphism. In the Leoncin meteorite, apatite reveal the 207Pb/206Pb age, which is 4549±61 Ma. The obtained apatite age in the Leoncin meteorite reflects the early solar system formation process. Moreover, the age is an example of the early solar system metamorphism, which confirms a slightly younger event of secondary changes of the parent body for this meteorite. It is also the first isotopic age of a Polish meteorite.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2021, 12; 85-91
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NWA 14360 – Nowy meteoryt z Nigru
A new meteorite from Niger: NWA 14360
Autorzy:
Karwowski, Łukasz
Szopa, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2034032.pdf
Data publikacji:
2022-03
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
ordinary chondrites
NWA 14360
meteorite
meteorites classification
Opis:
The new meteorite was bought as one single stone in 2019 from a dealer in Niger by Tomasz Jakubowski. The meteorite has fusion crust. It contains chondrules of different types with dominance of barred olivine chondrules, with diameter to 1.5 mm. Px and Ol are 78.1 vol%. of the meteorite mass. Pl is up 11.8 vol%. Average fayalite content is 24.93. Metallic phases are 3.0 vol%. Troilite is up to 5.9 vol%. Spinel (Cr-spinel) is up to 0.9 vol%. Average content of the secondary Fe-rich minerals (e.g. hydroxides) is 0.4 vol%. Feldspar composition is: Ab80.2Or5.0An14.8. Mean content of Al2O3, MgO and TiO2 in chromium spinel is 6.70 wt%, 2.05 wt% and 2.02 wt%, respectively. Metal phases are kamacite and tetrataenite. The kamacite has a Ni content in the range 5.83–6.81 wt%, while the Co content is in the range 0.39 to 0.56 wt%. Tetrataenite is has Ni content from 49.68 to 50.46 wt%, and Co up to 0.05 wt%. High-Ca monoclinic pyroxene, similar to diopside, is very rare. Accessory minerals are: chlorapatite and merrylite. Base on chemistry and petrography, the meteorite is classified as ordinary chondrite (L5). The main mass, a 9190 g specimen, is in Krzysztof Socha private collection. Small fragments with the total mass 71 g are stored in Museum of Earth Sciences (catalogue no: WNoZ/Mt/110) at University of Silesia in Katowice, Poland. 39 g was used for thin-section preparation and spectroscopic investigation (Mössbauer spectroscopy).
Źródło:
Acta Societatis Metheoriticae Polonorum; 2022, 13; 47-59
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy w Polsce są autochtoniczne tektyty?
Are autochthonous tektites in Poland?
Autorzy:
Brachaniec, Tomasz
Szopa, Krzysztof
Karwowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1033045.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Polska
autochthonous
moldavite
strewn field
tektite
Opis:
Undoubtedly, the river transport is very important in tektites distribution. Most of the moldavites are located in fluvial sediments, what indicates their redeposition origin. Similar situation is on the territory of Poland. Finding of the autochthonous Polish tektites seems very difficult and requires further fieldworks.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2016, 7; 17-20
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polskie mołdawity – podsumowanie dotychczasowej wiedzy
Polish moldavites – a summary of existing knowledge
Autorzy:
Brachaniec, Tomasz
Szopa, Krzysztof
Karwowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1033074.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Miocene
Polska
Ries
fluvial transport
moldavites
tektites
Opis:
Up to now, twenty Polish moldavites were recovered from fluvial deposits of Gozdnica formation. Apart from typical bottle green colour, moldavites also yield other typical features for tektites like presence of bubbles and inclusions of lechatelierite. Low degree of corrosion and palaeogeography suggest river transport flow from Lusatia to the east direction in the Miocene.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2017, 8; 18-22
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polskie mołdawity : obecny stan wiedzy i perspektywy nowych znalezisk
Polish moldavites : the current state of knowledge and perspectives of new finds
Autorzy:
Szopa, Krzysztof
Brachaniec, Tomasz
Karwowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2075990.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
mołdawit
tektyt
Nördlinger Ries
miocen
plejstocen
Polska
moldavite
tektite
Miocene
Pleistocene
Polska
Opis:
The first Polish moldavites were discovered in 2012. This paper is a summary of the distribution and inventory of these Polish tektites. Up to the present, 28 moldavites have been described from seven different sandpits. These moldavites were deposited in the upper Miocene fluvial deposits of the Gozdnica Formation, as well as in the Pleistocene river terraces. Apart from a typical bottle green colour, moldavites also have other diagnostics features for this class of tektites, such as the presence of bubbles, inclusions oflechatelierite, as well as the same, homogeneous chemical composition. Fluvial redeposition was interpreted as the main process which determined moldavite distribution. Despite the most recent find of one moldavite specimen in Bielawy, all of these specimens indicate both Lusatian as well as sub-strewn Czech fields as their supply area.
Źródło:
Przegląd Geologiczny; 2019, 67, 8; 662--667
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pierwsze znalezisko polskich mołdawitów
The first discovery of Polish moldavites
Autorzy:
Brachaniec, Tomasz
Karwowski, Łukasz
Szopa, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1032960.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Polska
Ries crater
meteorites
moldavites
strewnfield
tektites
Opis:
In Lower Silesia, in the late Miocene sediments moldavites were discovered. Finding of polish moldavites may change the existing model of tektites distribution, after the impact in the Ries crater area. Further studies are planned and should bring a new information.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2013, 4; 37-38
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe znalezisko meteorytu w południowej części województwa łódzkiego
New meteorite from the southern part of the Łódź Voivodeship, Poland
Autorzy:
Karwowski, Łukasz
Szopa, Krzysztof
Woźniak, Marek
Powiązania:
https://bibliotekanauki.pl/articles/1830272.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Kuźnica
meteorites
new meteorite from Poland
ordinary chondrite H5
Opis:
An anonymous person from Częstochowa in Poland found a new meteorite during the summer of 2008. The specimen was found in eolian sand, where exotic grains connected with glacial activity were not observed. The suspected meteorite was kept in the founder’s possession until the autumn of 2018. This was when the holder of the meteorite contacted the owners of the woreczko.pl webpage, which is dedicated to meteorite identification. Moreover, the webpage was developed and operated by meteorite collectors Jan Woreczko and Wadi. After meeting, Jan and Wadi bought the meteorite, which is now part of their collection. After the meeting, Jan and Wadi bought the meteorite (total meteorite mass 2143 g), which is now part of their collection. Three fragments with their total mass 20.74 g as well as two thin-sections (7.03 g) are deposited at the Earth Sciences Museum, University of Silesia in Katowice. The fusion crust is black to brownish, typical for a chondrite. Regmagliptes are visible. The meteorite is characterized by chondrules, which range in diameter from 0.015 to 1.000 mm in diameter. The most common type of chondrule is represented by olivine (Ol). The barred Ol texture, showing elongate, sub-parallel bars of olivine with clear pyroxenes (Px) and oligoclase between the bars. The second characteristic type is represented by Ol-Px porphyritic chondrules and radial Px chondrules. The matrix is not recrystallized; and the clasts are up to 0.1 to 0.2 mm in diameter. Px and Ol, plagioclase, metallic phases, troilite, and spinel (Cr-spinel) are up to 71.9 vol.%, 11.2 vol.%., 7.0 vol.%., 4.2 vol.%., and 1.1 vol.% of the meteorite, respectively. The average content of the secondary minerals is 4.4 vol.% (close to the outermost part is up to 8–10 vol.%. The meteorite is classified as a H5 ordinary chondrite, based on the Ol and Px composition (Fa/Fs), with an official name ‘Kuźnica’.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2021, 12; 41-57
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fragmenty kopalnego meteorytu z Lechówki: charakterystyka mineralogiczna i geochemiczna
Fragments of strongly weathered meteorite from Lechówka: mineralogical and geochemical characterisation
Autorzy:
Szopa, Krzysztof
Karwowski, Łukasz
Krzykawski, Tomasz
Brachaniec, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1033087.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Cretaceous-Paleogene boundary
Lechówka
fossil iron meteorites
kamacite
meteorites
paleometeorite
schreibersite
taenite
Opis:
Fossil iron meteorites are extremely rare in the geological sedimentary record. In the boundary clay from the outcrop at the Lechówka quarry (Poland), fragments of the paleometeorite were found in the Cretaceous-Paleogene boundary clay layer. The fragments of meteorite (2–6 mm in size) and meteoritic dust are metallic-grey in colour. Analyses of the meteorite from Lechówka reveal the presence of Ni-rich minerals with a total Ni amount of 2–3 wt%. They are represented by: taenite, kamacite, schreibersite, Ni-rich magnetite, and Ni-rich goethite. The investigated remnants of paleometeorite apparently represent an independent fall and does not seem to be derived from the K-Pg impactor.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2017, 8; 100-109
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jak odróżnić oryginał od fałszywek: kopalny meteoryt z Lechówki
How to distinguish the original from fakes: the fossil meteorite from Lechówka
Autorzy:
Szopa, Krzysztof
Karwowski, Łukasz
Krzykawski, Tomasz
Brachaniec, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1033111.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Lechówka meteorite
fake meteorite
fossil meteorite
Opis:
Value of meteorites can be explained at least in two aspects. From the scientific point of view they are priceless objects, which can bring important information about the very beginning of the Universe. Because of their rarity anduniqueness, the meteorites often are extremely expensive in the term of a commercial value. This situation is used by dishonest sellers who offer fake meteorites. It has happened with the paleometeorite remnants, which were originallyfound in Cretaceous-Paleogene clay boundary in Lechówka, Poland. The so-called fake Lechówka remnants were offered by one seller on domestic online shops. All grains had certificate of authenticity that was included with the sold grains. In this paper we described the most common and diagnostic features, which can be easily applied to distinguish the original meteorite remnants from the fake ones.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2018, 9; 112-122
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sferule z granicy Kreda-Paleogen (Lechówka, Polska) – wstępne dane
Spherules from the Cretaceous–Paleogene boundary (Lechówka, Polska) – preliminary data
Autorzy:
Brachaniec, Tomasz
Szopa, Krzysztof
Karwowski, Łukasz
Krzykawski, Tomasz
Salamon, Mariusz
Brom, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1033022.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Cretaceous–Paleogene boundary
impact origin
smectite
spherule
spinel
Opis:
Samples of boundary clay from Cretaceous–Paleogene deposits from Lechówka, Poland were examined for spherules to confirm the impact origin of the sediment. The chemical composition of investigated spherules show similarities to material from the K–Pg boundary from Stevns Klint. The impact genesis of the spherules is confirmed by the presence of nickel-rich spinel grains on their surfaces. The deposits with spherules are built by smectite with Al and Mg enrichment. This cheto smectite is forming as a result of the weathering of the impact glass.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2015, 6; 17-22
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
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