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Wyświetlanie 1-8 z 8
Tytuł:
Historical land use conversion in Kraków’s metropolitan zone
Autorzy:
Prus, Barbara
Nowak, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/100591.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
land use change
metropolitan area
suburbanisation
agricultural marginalisation
historical GIS
zmiana użytkownika gruntu
obszar metropolitalny
suburbanizacja
marginalizacja rolnictwa
historyczny GIS
Opis:
Land use conversion is a dynamic process that occurs all over the world. The scale of this process is global, and depends on related driving forces. There are numerous case studies of land use changes but only a few synthesise the results. The aim of the study is to analyse historical land use conversions in two villages located in peri-urban areas of the city of Kraków, and in particular, to indicate the directions of these changes associated with the distance of the given village to Kraków. The examples of two villages were selected so as to indicate the direction of changes in the immediate vicinity of the city as well as in a zone further outside the city. The aim is also to present a possible approach to monitoring the long-term development of these areas. As regards Poland, the expansion of urban pattern of land development outside the administrative boundaries of cities results in direct interference in agricultural production space, and not infrequently in areas having particular natural and cultural values. This is also the case within the zone of the direct impact of the city of Kraków on areas located to the south of the urban agglomeration. The article confirms that the changes involve the conversion of agricultural areas into built-up and urbanised areas. Nevertheless, the study results indicate an unexpected increase in the area of wasteland in close vicinity of the city, despite soil conditions being favourable to pursuing agricultural activities. It is a long-term study, which considers precise maps showing land use structure. It is the first step towards designing multi-scale studies that would consider land use changes in the neighbourhood of metropolitan areas.
Źródło:
Geomatics, Landmanagement and Landscape; 2019, 4; 93-107
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Results of archaeological rescue excavations at Mucharz (Beskidy Mts.)
Autorzy:
Valde-Nowak, Paweł
Tarasiński, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/442466.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Jagielloński. Instytut Archeologii
Tematy:
Western Carpathians
Mucharz site
rescue excavations
Świdry culture
Mesolithic
Neolithic
Mierzanowice culture
Medieval Period
Opis:
During rescue excavations at the site Mucharz 12 carried out due to building of the water reservoir at Świnna Poręba on the border of the Middle and Small Beskidy Mts. unexpectedly traces of the Late Paleolithic settlement of Świdry culture were discovered, among them remains of two dwelling features. Besides them the site provided numerous Mesolithic artifacts, traces of Neolithic settlement, assemblages representing two different variants of Bronze Age Mierzanowice culture and finally remains connected with medieval occupation. Studies on stone artifacts demonstrated that mainly during the Mesolithic period local deposits of Mikuszowice hornstone were exploited. Presence of the artifacts made of raw materials coming from some distance sources (e.g. Jurassic flint) was confirmed as well. Presented results put new light on the problem of detectability of archaeological sites within mountain zones of southern Poland, as well as on the character of prehistorical settlement traces on the territory.
Źródło:
Recherches Archéologiques Nouvelle Serie; 2010, 2; 185-201
0137-3285
Pojawia się w:
Recherches Archéologiques Nouvelle Serie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obesity in 18-25-year-olds in relation to their physical activity, and lifestyle
Autorzy:
Gabrys, Tomasz
Nowak, Zbigniew
Michalski, Cezary
Szmatlan -Gabrys, Urszula
Stanula, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/1031711.pdf
Data publikacji:
2018
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
health promotion
obesity
overweight
physical activity
Opis:
The quality of life is a multidimensional notion. When studying it, one should take the physical, the psychological, the social, and the professional aspects into consid eration. Among them, the notion of the influence of obesity, understood as a modern -age disease, relates the quality of life to the notion of health, in the aspect of physical activity. The aim of the study carried out, was to determine the relationship be tween obesity in 18 -25 year - olds, and their physical activity, as well as the quality of their lives. The study was carried out by means a WHOQOL - BREF, and IPAQ survey questionnaires carried out on a group of 100 participants. The control group included pe ople whose BMI was within the norm, whereas the study group comprised people whose BMI was over 25. The results of the study have shown obesity to have a statistically significant negative impact on the quality of life in the physical, and mental domains, and as far as the general perception of health was concerned. In the study group, the mean weekly energy expenditure, was lower than in the control group. The physical activity of the obese, includes, mainly, activities based on light effort, and to a less er extent, those based on moderate effort. A comparative analysis has shown the level of physical activity to be significantly lower in obese women, in each type of physical effort, except light effort. This difference does not exist between the study, and control groups of men.
Źródło:
Physical Activity Review; 2018, 6; 64-72
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the credibility of the extracted position from a vast collection of job offers with machine learning ensemble methods
Autorzy:
Drozda, Paweł
Ropiak, Krzysztof
Nowak, Bartosz A.
Talun, Arkadiusz
Osowski, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/22615539.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
machine learning
web scraping
granularity method
classification
Opis:
The main aim of this paper is to evaluate crawlers collecting the job offers from websites. In particular the research is focused on checking the effectiveness of ensemble machine learning methods for the validity of extracted position from the job ads. Moreover, in order to significantly reduce the training time of the algorithms (Random Forests and XGBoost), granularity methods were also tested to significantly reduce the input training dataset. Both methods achieved satisfactory results in accuracy and F1 measures, which exceeded 96%. In addition, granulation reduced the input dataset by more than 99%, and the results obtained were only slightly worse (accuracy between 1% and 5%, F1 between 3% and 8%). Thus, it can be concluded that the considered methods can be used in the evaluation of job web crawlers.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2023, 26(1); 125--140
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sequential leaching analysis to investigate the sintering process of coal, cereal pellets and wood pellets Ash
Autorzy:
Szydełko, Arkadiusz
Nowak-Woźny, Dorota
Urbanek, Bartosz
González-Valdés, Laura
Rybak, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/952662.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
coal
biomass
leaching
ashfusionbehaviour
węgiel
biomasa
ługowanie
Opis:
The presence of inorganic elements in solid fuels is not only considered a direct source of problems in the furnace but is also connected with the release of pollutants into air during combustion. This article focuses on the sintering characteristics of biomass and coal ashes, in particular on the leaching processes, and their impact on the tendency to sinter ash. Biomass and coal ash with high alkali metal concentration can deposit in boiler sections and cause severe operating problems such as slagging, fouling and corrosion of boiler and heat exchanger surface, limiting heat transfer. Two biomass types and one coal ash with different origin and different chemical compositions were investigated. A sequential leaching analysis was employed in this study to elucidate the modes of occurrence of metals that can transform into fuel extract. Sequential leaching analysis was conducted as a two-step process: using distilled water in the first step and acetic acid in the second step. The chemical composition of ashes, before and after each step of the leaching processwas studied using ICP-OES method. The standard Ash Fusion Temperature (AFTs) technique was also employed to assess the sintering tendency of the tested samples. It was observed that the presence of key elements such as sodium, potassium, magnesium and sulphur (elucidated in the leaching process) plays a significant role in sintering process. The sintering tendency enhances when the concentration of these elements increases.
Źródło:
Chemical and Process Engineering; 2019, 40, 2; 189-199
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model and measurements of a combi-steamer condensation hood
Autorzy:
Tokarski, Mieszko
Ryfa, Arkadiusz
Buliński, Piotr
Rojczyk, Marek
Ziarko, Krzysztof
Nowak, Andrzej J.
Powiązania:
https://bibliotekanauki.pl/articles/240444.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy balance
heat transfer
heat exchanger
condensation
condensation hood
Opis:
Combi-steamer condensation hoods are widely used in modern gastronomy. They condense steam produced by the combi-steamer and also filter solid particles, moisture, grease and smells. All these factors negatively affect the staff and dishes, so efficient work of the condensation hoods becomes important. A mathematical and experimental analysis of such a device is described in this paper. First a measurement methodology was designed and measurements of air humidity, temperature and mass flow rates were performed. The measurement procedure concerned dedicated a steam generator and combi-steamer. Next a mathematical model was developed. It was based on mass and energy balances of the condensation hood. The condensate flow rate turned out to be insufficient to fulfill the energy balance while measured directly. Hence, it was calculated from heater’s power of the steam generator and the balance model was validated. The combisteamer had an unknown output, so the condensate flow rate was provided by the balance model after its validation. A preliminary diagnosis of the device was carried out as well.
Źródło:
Archives of Thermodynamics; 2020, 41, 1; 125-149
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Variable-Intensity Running Training and Circuit Training on Selected Physiological Parameters of Soccer Players
Autorzy:
Ambroży, Tadeusz
Nowak, Mateusz
Omorczyk, Jarosław
Wrześniewski, Krzysztof
Ozimek, Mariusz
Duda, Henryk
Mucha, Dawid
Ceranowicz, Piotr
Pałka, Tomasz
Stanula, Arkadiusz
Mucha, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/1030576.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
circuit training
physiological parameters
soccer players
variable-intensity running training
Opis:
Proper planning of the training process based on individual LT and AT metabolic thresholds is essential to improve athletic performance. Development of endurance in soccer players is mainly based on continuous runs and variable-intensity runs, supplemented with strength conditioning and sport-specific training. The aim of the study was to analyse selected parameters of physical capacity of soccer players after 8-week variable-intensity running training and circuit training. The experiment was carried out in a group of 34 soccer players aged 21 to 26 years. The athletes were divided into two groups: 17 people in the experimental group and 17 people in the control group. The experimental group was involved in 30-minute tempo runs two times a week for 8 weeks with variable intensity at AT. In the same period, the control group performed two 60-minute continuous runs at the intensity of 70-75%HRmax. The determination of metabolic thresholds used two indirect tests: the multistage shuttle run test (beep test) and maximal lactate steady state test (MLSS) with author's own modification. In order to evaluate maximal heart rate (HRmax), the research procedure was started from the beep test (distance: 20 m). The speed at the first level was 8.5 km/h and increased with each level by 0.5 km/h. Training of the experimental group where variable exercise intensity was used caused a statistically significant increase in HRmax (by 1.9%) and blood lactate levels at the AT (by 20.5%). The training in the experimental group led to the statistically significant (p < 0.05) increase in the parameters of the following variables: HRmax (by 1.9%); lactate level (by 7.85); HR at the AT (by 1,9%); lactate level at the AT (by 20.5%). The assumptions of the experimental training did not cause statistically significant changes in pretest vs. posttest HRmax and blood lactate levels for the LT. Endurance training with high intensity is more effective in soccer players compared to training with moderate intensity. Development of special endurance in soccer should also assume the intensity and method of working similar to the method used during sport competition.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2018, 23, 3; 25-35
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
1000 Liver Transplantations at the Department of General, Transplant and Liver Surgery, Medical University of Warsaw - Analysis of Indications and Results
Autorzy:
Krawczyk, Marek
Grąt, Michał
Barski, Krzysztof
Ligocka, Joanna
Antczak, Arkadiusz
Kornasiewicz, Oskar
Skalski, Michał
Patkowski, Waldemar
Nyckowski, Paweł
Zieniewicz, Krzysztof
Grzelak, Ireneusz
Pawlak, Jacek
Alsharabi, Abdulsalam
Wróblewski, Tadeusz
Paluszkiewicz, Rafał
Najnigier, Bogusław
Dudek, Krzysztof
Remiszewski, Piotr
Smoter, Piotr
Grodzicki, Mariusz
Korba, Michał
Kotulski, Marcin
Cieślak, Bartosz
Kalinowski, Piotr
Gierej, Piotr
Frączek, Mariusz
Rdzanek, Łukasz
Stankiewicz, Rafał
Kobryń, Konrad
Nazarewski, Łukasz
Leonowicz, Dorota
Urban-Lechowicz, Magdalena
Skwarek, Anna
Giercuszkiewicz, Dorota
Paczkowska, Agata
Piwowarska, Jolanta
Gelo, Remigiusz
Andruszkiewicz, Paweł
Brudkowska, Anna
Andrzejewska, Renata
Niewiński, Grzegorz
Kilińska, Beata
Zarzycka, Aleksandra
Nowak, Robert
Kosiński, Cezary
Korta, Teresa
Ołdakowska-Jedynak, Urszula
Sańko-Resmer, Joanna
Foroncewicz, Bartosz
Ziółkowski, Jacek
Mucha, Krzysztof
Senatorski, Grzegorz
Pączek, Leszek
Habior, Andrzej
Lechowicz, Robert
Polański, Sławomir
Leowska, Elżbieta
Pacho, Ryszard
Andrzejewska, Małgorzata
Rowiński, Olgierd
Kozieł, Sławomir
Żurakowski, Jerzy
Ziarkiewicz-Wróblewska, Bogna
Górnicka, Barbara
Hevelke, Piotr
Michałowicz, Bogdan
Karwowski, Andrzej
Szczerbań, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/1396689.pdf
Data publikacji:
2012-06-01
Wydawca:
Index Copernicus International
Tematy:
liver transplantation
indications
results
mortality
Opis:
The aim of the study was to analyze indications and results of the first one thousand liver transplantations at Chair and Clinic of General, Transplantation and Liver Surgery, Medical University of Warsaw.Material and methods. Data from 1000 transplantations (944 patients) performed at Chair and Clinic of General, Transplantation and Liver Surgery between 1994 and 2011 were analyzed retrospectively. These included 943 first transplantations and 55 retransplantations and 2 re-retransplantations. Frequency of particular indications for first transplantation and retransplantations was established. Perioperative mortality was defined as death within 30 days after the transplantation. Kaplan-Meier survival analysis was used to estimate 5-year patient and graft survival.Results. The most common indications for first transplantation included: liver failure caused by hepatitis C infection (27.8%) and hepatitis B infection (18%) and alcoholic liver disease (17.7%). Early (< 6 months) and late (> 6 months) retransplantations were dominated by hepatic artery thrombosis (54.3%) and recurrence of the underlying disease (45%). Perioperative mortality rate was 8.9% for first transplantations and 34.5% for retransplantations. Five-year patient and graft survival rate was 74.3% and 71%, respectively, after first transplantations and 54.7% and 52.9%, respectively, after retransplantations.Conclusions. Development of liver transplantation program provided more than 1000 transplantations and excellent long-term results. Liver failure caused by hepatitis C and B infections remains the most common cause of liver transplantation and structure of other indications is consistent with European data.
Źródło:
Polish Journal of Surgery; 2012, 84, 6; 304-312
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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