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Wyszukujesz frazę "Markiewicz, Ł." wg kryterium: Autor


Tytuł:
Methods of navigation in the mobile application supporting movement of the blind
Autorzy:
Wiśniewski, B.
Drypczewski, K.
Markiewicz, Ł.
Kamiński, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/332007.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Akustyczne
Opis:
This paper presents conclusions from the last development phase of the “Voice Maps” project. Authors specify newly found available options for navigation in affordable system for the blind with all their related aspects. System uses dedicated geographical data, built-in smartphone GPS receivers and DGPS external device in order to assist blind users in their everyday travelling. Authors also discuss new methods to improve positioning accuracy and navigation reliability (map matching and remote pathfinding) along with interface modules for the blind.
Źródło:
Hydroacoustics; 2013, 16; 243-252
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Projekt listwy zasilającej w oparciu o koncepcję Internetu Rzeczy
The Internet Things on the example of a power strip project
Autorzy:
Nowomiejski, A.
Łaguna, Ł.
Mich, D.
Markiewicz, S.
Galla, S.
Powiązania:
https://bibliotekanauki.pl/articles/267655.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
Internet rzeczy
listwa zasilająca
sterowanie bezprzewodowe
Internet of things
power strip
wireless
Opis:
W referacie przedstawiono podstawowe uwarunkowania, jakimi należy kierować się przy opracowywaniu urządzeń należących do klasy obiektów określanych mianem „Internetu Rzeczy” na przykładzie zrealizowanego prototypu listwy zasilającej. Przedstawione w pracy urządzenie przeznaczone jest do sterowanie różnorodnymi odbiornikami energii elektrycznej niemogącymi być bezpośrednio sterowanymi z sieci Ethernet. W pracy przedstawiono przyjęte założenia projektowe oraz zastosowane rozwiązania. Przedawniono również wyniki testów prototypu i wskazano na napotkane problemy.
The paper presents the basic conditions that should be followed when developing Internet of Things (IoT) devices on the example of the implemented power strip arrangement that allows control of various electric energy receivers. The article assumed design assumptions and applied solutions. The results of the prototype tests were also subjected to expiration and indicates the problems encountered.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2018, 60; 97-100
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibilities of extension of gear oil service life in rail vehicles
Autorzy:
Muślewski, Ł.
Sójka, M.
Landowski, B.
Markiewicz-Patalon, M.
Powiązania:
https://bibliotekanauki.pl/articles/244369.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
rail vehicle
lubricity
ignition temperature
concentration of wear products
kinematic viscosity
Opis:
The study deals with the results of operational tests of gear oils used in a regional railway transport system. The character of the aging process and the impact of gear oil operation on the main factors determining further usability of gear oil have been defined on the basis of the results of carried out tests. It was proved that transport systems lack reliable convenient diagnostic methods for gear oil used during the process of operation. One of the criteria taken into consideration in decision-making is the period of oil change imposed by the gear manufacturer. The long process of oil application is accompanied by physicochemical changes, which cause degradation of its properties. This phenomenon is referred to as oil aging. This fact can cause loss of viscosity, increase in the amount of pollution, and in effect a decrease in the ability to provide a durable boundary film. The lubricating ability of oil decreases as well. An increase in the amount of pollution is caused by interaction of the collaborating friction elements and by pollutants coming from the gear environment. These changes are of permanent character and reflect the state of new characteristics referred to as operational characteristics. Gear oils have a certain lubricating ability, which is a critical parameter. This study is an attempt to find a way of the oil service life extension and convince the propulsion systems manufacturers that reduction of costs connected with rail vehicle maintenance does make sense.
Źródło:
Journal of KONES; 2018, 25, 4; 309-316
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozwój technologii i urządzeń do oczyszczania wody na bazie osiągnięć naukowo- technicznych Wojskowego Instytutu Techniki Inżynieryjnej
Development of water treatment equipment and technology, as based on the science and engineering accomplishments of the military institute of engineer technology
Autorzy:
Mazurczuk, R.
Kwak, A.
Szyszka, K.
Maliszewski, W.
Markiewicz, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/234742.pdf
Data publikacji:
2011
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
rozwój technologii
oczyszczanie wody
technology development
water treatment
Opis:
W artykule przedstawiono osiągnięcia WITI w zakresie wdrażania technologii uzdatniania wód powierzchniowych i rozwiązań technicznych stosowanych w wojskowych filtrach i stacjach oczyszczania wody. Pokazano typoszeregi filtrów małych, średnich i dużych oraz ich kolejnych modernizacji. W rozdziale „Opracowanie metody usuwania z wody radionuklidów i zastosowanie jej w wojskowych filtrach oczyszczania wody” przedstawiono w skrócie źródła możliwych skażeń promieniotwórczych wody, przydatność typowych procesów oczyszczania wody stosowanych w warunkach polowych do usuwania z niej radionuklidów, wady dotychczas stosowanych technologii oraz zasadę opracowanej metody oczyszczania wody z substancji promieniotwórczych i zastosowanie jej w nowych filtrach wojskowych. W referacie przedstawiono również możliwości wdrożenia technik membranowych do budowy wojskowych filtrów uzdatniania wody z wyszczególnieniem ich wad i zalet oraz zasygnalizowano rozpoczęcie prac o tej tematyce w Wojskowym Instytucie Techniki Inżynieryjnej.
The paper presents projects accomplished by Military Institute of Engineer Technology (WITI) in the area of surface water treatment and technological solutions applied in military water treatment equipment and military water treatment stations. The division of the equipment into those of low-, medium- and high output is given, as is the course of their subsequent upgrades. In the chapter entitled “Development and implementation of the method of removing radionuclides out of water in military water treatment stations” what can be found is a concise description of the possible radioactive contamination sources in water and the applicability of conventionally used field water treatment processes in case of radionuclide removal. The drawbacks of the contemporary technologies are included as well. Described in detail is the newly-developed method of removing radioactive contaminations from water and the application of this method in new military water purifiers is given. The paper also addresses the issue of introducing membrane technologies into the structure of military water treatment equipment and water treatment stations, presenting the advantages and drawbacks of this solution. Additionally, initiation of work on the subject in WITI is indicated.
Źródło:
Problemy Techniki Uzbrojenia; 2011, R. 40, z. 117; 29-36
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of selected operating parameters of engine powered by a mixture of biocomponents and diesel oil
Autorzy:
Markiewicz-Patalon, M.
Muślewski, Ł.
Kaszkowiak, J.
Knopik, L.
Powiązania:
https://bibliotekanauki.pl/articles/244467.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
means of transport
diesel oil
biocomponent
alternative fuels
Opis:
Reaching of high parameters of a drive unit and low pollution of the natural environment is considered to be the most desired effect of motorization. The use of the additive in the form of fatty acid methyl esters to the diesel oil, assumes lowering of harmful fuel gases’ emission and reaching high operating parameters of an engine, such as power and turning moment. Studies on the power output and the turning moment of an engine with self-ignition are presented in the study. The subject matter of the studies was a combustion engine with self-ignition of the power of 80 kW with the direct common rail system and turbo-compressor’s supercharging and with electromagnetic injectors. The tested engine was powered with diesel oil and the mixture of fatty acid methyl esters and the diesel fuel, in proportions 10%, 30% and 50% with an improver, at the standard settings of the fuel injection controllers. The vehicle used for the testing purposes, has been singled out with respect to the specific features, such as: universality of its use as a means of transportation and the opportunity of modification of the injection parameters, resistance to possible unfavourable consequences resulting from the use of the fuel mixture. The studies were conducted on a chassis test house, at full engine’s loading. The vehicle placed on the test house’s rollers, was strapped with belts to the foundation, and then accelerated up to the specific speed and subjected to loading standing in place. In such a manner, the road conditions were simulated. The obtained results of the tests were subject to the statistical analysis. From their analysis it results, that application of the mixture lowers the engine’s parameters to a degree unnoticeable at the time of its operation.
Źródło:
Journal of KONES; 2018, 25, 2; 239-244
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the suitability of the fuels with component power engines
Autorzy:
Markiewicz-Patalon, M.
Muślewski, Ł.
Kaszkowiak, J.
Landowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/241697.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
biocomponent
diesel
energy
calorific value
viscosity
cetane number
Opis:
The article presents the results of laboratory tests of selected properties of fuels available on the market and fuels with higher density component B100 obtained from rapeseed oil (10, 30, 50 and 100%). An analysis of the cetane number, viscosity, and weight of the ash remaining after combustion of fuel samples was made. It was found that the cetane number of pure biocomponent is higher than diesel oil of mineral origin and it slowly decreased along with a decrease in the Extras component. All tested samples of fuels have appropriate cetane number to power internal combustion engines with compression ignition. The viscosity of the fuel samples measured at a temperature of 30ºC increased along with an increase in the content of biocomponent and approached the limit values for fuels. According to the results presented by other authors in their studies ash mass decreased along with an increase in the content of the component. Only premium diesel showed less ash mass than other fuel. The study includes also the energy value and the calorific value of liquid fuels with addition of a biocomponent, which power diesel engines. The results of the tests indicate a slight decrease in the calorific value of the fuel along with an increase in the content of biocomponent, which does not affect the ability to power the engines. Laboratory tests have proved that use of methyl esters of fatty acids in diesel fuel is the right choice to power diesel engines.
Źródło:
Journal of KONES; 2017, 24, 4; 187-192
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of intake system modification on the formula student engine power.
Autorzy:
Markiewicz, T.
Kaczmarczyk, Ł.
Fabiś, P.
Powiązania:
https://bibliotekanauki.pl/articles/198373.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
Formula Student
intake
engine power
wlot
moc silnika
Opis:
This paper is a summary of the design and workmanship of the formula student engine intake vehicle, for simulation research projects were conducted on the intake system. In the process, the most favourable model system was selected, which was capable of producing a satisfactory range of the characteristics of the engine. For chosen models, the intake system was also determined in terms of its impact on the power and torque of the test vehicle, which was driven by a four-cylinder engine with a displacement of 0.6 dm3 .
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2017, 94; 139-149
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil organic matter status in agricultural soil sequence of former shoreline of disappearing Sumowskie Lakes, North-Eastern Poland
Sta glebowej materii organicznej w rolniczo użytkowanej sekwencji gleb dawnej strefy brzegowej zanikających jezior Sumowskich (północno-wschodnia Polska)
Autorzy:
Markiewicz, M.
Mendyk, L.
Gonet, S.S.
Powiązania:
https://bibliotekanauki.pl/articles/905624.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
soil organic matter
organic matter status
agricultural soil
shoreline
disappearing lake
Polska
Brodnica Lakeland
Opis:
The aim of the study has been to define the stocks and the basic properties of soil organic matter in agricultural-used soil sequence located in the former shoreline of disappearing lakes. The study area is located in the catchment of the Sumowskie Lakes, the Brodnica Lake District, North-Eastern Poland. The investigations involved preparation of five soil pits located in the south-western part of the former Sumowskie Lake bottom and on the southern slope of the adjacent kame hill. The greatest soil transformation is reflected in the quality and quantity of the soil organic matter. Indexes of organic matter quality and TOC stocks are significantly changing along the studied transect. The strongly humidified organic matter is found in mursh horizons. Gyttja layers above the groundwater level have a medium humification index. Horizons saturated with water are very low humidified. TOC stocks drop along the analysed soil sequence from the biogenic plain to the top of the kame hill.
Celem badań było określenie zasobów i podstawowych właściwości materii organicznej sekwencji rolniczo użytkowanych gleb dawnej strefy brzegowej zanikających jezior. Obszar badań był zlokalizowany w zlewni jezior Sumowskich na Pojezierzu Brodnickim w Polsce północno-wschodniej. Analizowano transekt składający się z pięciu profili glebowych znajdujących się w pd.-zach. części dawnego Jeziora Sumowskiego. Obejmował on dno dawnego jeziora oraz przylegające wzgórze kemowe. Największe zróżnicowanie gleb dotyczyło ilości i jakości glebowej materii organicznej. Zarówno właściwości materii organicznej, jak i jej zasoby wyraźnie różnicują się w analizowanym transekcie. Materia organiczna poziomów murszowych gleb pojeziornych odznacza się najwyższym stopniem humifikacji, warstwy gytii, powyżej poziomu wód gruntowych, pośrednim, a poziomy nasycone wodą najniższym spośród analizowanych. Zasoby węgla organicznego zmniejszają się wzdłuż transektu od gleb pojeziornych do szczytu pagórka kemowego (pararędziny).
Źródło:
Polish Journal of Soil Science; 2015, 48, 1
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Client-server Approach in the Navigation System for the Blind
Autorzy:
Markiewicz, Ł.
Drypczewski, K.
Wiśniewski, B.
Kamiński, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/117366.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Navigation System
Navigation System for the Blind
voice maps
Spatial Data
geographic information system (GIS)
Mobile Device
pathfinding
mobile application
Opis:
The article presents the client-server approach in the navigation system for the blind - “Voice Maps”. The authors were among the main creators of the prototype and currently the commercialization phase is being finished. In the implemented prototype only exemplary, limited spatial data were used, therefore they could be stored and analyzed (for pathfinding process) in the mobile device’s memory without any difficulties. The resulting increase of spatial data scale and complexity required a modification of the data storage and operation. Consequently, the decision was made to maintain a central spatial database, which is accessed remotely. After that modification, the mobile application fetches the required batch of spatial data (with the pathfinding and search results) from the central server through the mobile internet connection, which has also become necessary for other purposes (e.g. voice recognition). The authors present the advantages and disadvantages of this new approach along with the results of the server operational tests.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 395-400
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coastline change-detection method using remote sensing satellite observation data
Autorzy:
Markiewicz, Ł.
Mazurek, P.
Chybicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/331592.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
coastal monitoring
SAR
Sentinel
Landsat
background subtraction
image processing
Opis:
Coastal zones are not only the fundaments for local economics based on trade, shipping and transport services, but also a source of food, energy, and resources. Apart from offering diverse opportunities for recreation and tourism, coastal zones provide protection against storms and other meteorological disturbances. Environmental information is also essential because of the direct influence on a country’s maritime zones, which are territorial sea and exclusive economic zones. Keeping local communities and ecosystems healthy requires monitoring and assessing of all the vital changes of territorial sea and its baseline. The paper presents a method and a concept of a system that provides an efficient means of automatic analysis of spatial data provided by satellite observation systems (optical Landsat 8 and SAR Sentinel 1) in order to monitor, and detect, changes in the coastline. The proposed methodology is based on a set of algorithms that enable one to trace and detect changes in coastline shape, and eventual damage to marine infrastructure, such as breakwaters and harbours, relying on high resolution satellite observational products.
Źródło:
Hydroacoustics; 2016, 19; 277-284
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cechy osobowości a decyzje adolescentów dotyczące planów edukacyjnych i zawodowych
Autorzy:
Markiewicz, Katarzyna
Kaczmarek, Bożydar L.J.
Kostka-Szymańska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/637069.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
adolescence, career planning, personality traits, economic changes
Opis:
Personality traits and adolescents’ decisions concerning education and career planningOne of the most signifi cant tasks confronting adolescents is planning future career in order to start an independent life (Kanfer et al., 2001). A number of studies show that it poses number of signifi cant problems (Super, 1963; Super, Savickas, Super, 1996; Webber, 1990; Borgen, Amundson, 2010). The aim of the present study was to defi ne decision-making mechanisms that have an impact on career planning by adolescents and the infl uence of their personality traits upon it. The NEO-FFI Inventory and a self-constructed questionnaire were administered to 116 students of the last year of a secondary school. The data indicate correlations between the choices concerning further studies and personality traits measured with NEO-FFI Inventory. The following traits proved to be signifi cant: neuroticism, extraversion, agreeableness, and conscientiousness
Źródło:
Psychologia Rozwojowa; 2010, 15, 3
1895-6297
2084-3879
Pojawia się w:
Psychologia Rozwojowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cognitive dysfunctions in a Minimally Verbal (MV) patient with Autism Spectrum Disorder (ASD)
Autorzy:
Markiewicz, Katarzyna
Kaczmarek, Bożydar L.J
Kropotov, Juri D
MacQueen, Weronika D
MacQueen, Bruce D
Pachalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2106145.pdf
Data publikacji:
2019-11-22
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
intellectual disability
epilepsy
event related potentials
EEG
QEEG
Opis:
The aim of this study was to examine the neurophysiological correlates of cognitive dysfunctions in a patient with the minimally verbal variant of Autism Spectrum Disorder (ASD + MV), who after reaching adulthood showed progressive deterioration of his cognitive skills. The patient was a 25-year-old male, diagnosed with ASD. He never developed spoken language, and communicated only by gesturing or writing on a computer. Our findings confirmed comorbidity of ASD and epilepsy, accompanied by dysfunction of cognitive control. We also found that spontaneous EEG and event-related potentials (ERPs) in a cued GO/NOGO task can be used to assess functional brain changes concomitant with ASD.
Źródło:
Acta Neuropsychologica; 2019, 17(3); 301-310
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coping Strategies and COVID-19 Prevalence Among University Students Learning in the Online and Blended Mode
Autorzy:
Markiewicz, Katarzyna
Kaczmarek, Bożydar L.J.
Oryshchyn-Buzhdyhan, Lidiya
Powiązania:
https://bibliotekanauki.pl/articles/2057076.pdf
Data publikacji:
2022-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
country
age
gender
personality
executive functions
Opis:
The study assessed whether students who contracted COVID-19 and did not fall ill differed in coping strategies. The study comprised 111 participants, including 55.9% who were infected and 44.1% who were not. It consisted of online (49.5%) and blended mode learners (50.5%) aged 19 to 31. We used the Brief COPE Inventory to assess ways of coping with stress. Among online students, 65.5% fell ill, while less than half of blended mode learners got sick. Students who contracted COVID-19 were more likely to use maladaptive coping strategies, and respondents who did not become ill were more likely to use adaptive strategies.
Źródło:
The New Educational Review; 2022, 68; 223-234
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł

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