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Wyświetlanie 1-9 z 9
Tytuł:
Metody zwiększenia efektywności transportu towarowego w obrębie aglomeracji szczecińskiej
Methods for increasing the efficiency of freight transport in Szczecin area
Autorzy:
Kujawski, A.
Pastuszak, K.
Kacprzak, K.
Franos, M.
Powiązania:
https://bibliotekanauki.pl/articles/309888.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
aglomeracja szczecińska
transport drogowy
transport kolejowy
koszty transportu
efektywność transportu
Szczecin agglomeration
road transport
railway transport
transportation costs
transport efficiency
Opis:
W artykule omówione zostały problemy transportowe w obrębie aglomeracji szczecińskiej. Dokonano analizy stanu istniejącego oraz zaproponowano rozwiązania problemów transportu towarowego na przykładzie istniejącej sieci logistycznej. Proponowana metoda polega na odciążeniu transportu drogowego przy wykorzystaniu istniejącej infrastruktury transportu kolejowego, a także przeanalizowanie jaki będzie to miało wpływ na koszty bezpośrednie oraz koszty zewnętrzne dla tych dwóch gałęzi transportu. W analizie wykorzystano metodę najkrótszej ścieżki do rozwiązania problemu komiwojażera. Metoda ta rozwiązuje graf hamiltonowski w poszukiwaniu minimalnej odległości pomiędzy wszystkimi badanymi punktami i wyznacza najkrótszą ścieżkę pomiędzy nimi.
The article presents transport problems within the Szczecin area and analysis of the existing situation. The main goal is to propose solutions of the freight transport using the existing logistics network. The aim is to relieve part of road transport and move it to the rail using existing infrastructure. Results will be used to examine the impact on external costs. The analysis uses the method of shortest path to solve the traveling salesman problem. This method resolves the Hamiltonian graph to search of the minimum distance between all test points and determines the shortest path between them.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 9; 139-144
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poduszkowiec sterowany z systemu android
A hovercraft controlled from Android system
Autorzy:
Filipek, P.
Kamiński, T.
Panas, P.
Pastuszak, K.
Powiązania:
https://bibliotekanauki.pl/articles/312555.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
poduszkowiec
układ sterowania
system android
hovercraft
control system
android system
Opis:
W artykule przedstawiono projekt pojazdu poduszkowego oraz rzeczywiste wykonanie modelu i układu sterowania przy użyciu ogólnodostępnych części oraz materiałów. Pojazd składa się z dwóch systemów napędowych, jeden służy do wytwarzania ciśnienia wewnątrz poduszki powietrznej, która kieruje powietrze pod kadłub poduszkowca i jednocześnie unosi pojazd nad podłożem. Drugi system służy do wprawiania pojazdu w ruch postępowy oraz zmiany kierunku ruchu. Sterowanie pojazdem odbywa się za pomocą urządzenia mobilnego z systemem Android połączonego bezprzewodowo z mikrokontrolerem Arduino.
Paper shows the design of air-cushion vehicle and the actual implementation of the model and control system using generally accessible parts and materials. The vehicle consists of two main systems, The lift system producing pressure inside the air cushion which directs air under the hull of the hovercraft and at the same time raises the vehicle above the ground. The second system propels the craft forward and change the direction of movement. Control system is done by using Android smartphone connected wirelessly to the Arduino microcontroller.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 6; 663-667, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogen Production in Institute of Fluid Machinery of Polish Academy of Science in Gdańsk — theory and practice
Autorzy:
Sołowski, G.
Czylkowski, D.
Hrycak, B.
Siuzdak, K.
Pastuszak, K.
Cenian, A.
Powiązania:
https://bibliotekanauki.pl/articles/1190155.pdf
Data publikacji:
2019
Wydawca:
Gdańska Szkoła Wyższa
Tematy:
hydrogen
dark fermentation
plasmolysis
photochemical water oxidation
Opis:
The hydrogen production technologies developed in the Institute of Fluid-Flow Machinery, Polish Academy of Sciences in Gdańsk are discussed here. They include the following methods: dark fermentation, photoelectrochemical water oxidation and hydrocarbons (or alcohols) reforming by microwave plasma. The potential of hydrogen production by using dark fermentation of different popular wastes such as: agricultural wastes, textile or wood waste, was determined using suitable models. Also, the influence of microaeration during dark fermentation of some substrates, e.g. sour cabbage, was tested. Photochemical oxidation is a water-splitting process driven by radiation at the surface of a titanium-oxide anode. The Si microrods covered by titania films were verified as a photoanode material. The hydrogen production from methane, ethanol, isopropanol and kerosene was driven by a microwave plasma. The results obtained confirm that microwave plasma sources have a high potential for hydrogen production via gaseous and liquid fuels reforming.
Źródło:
Eco-Energetics: technologies, environment, law and economy; 2019, 2; 135--144
2657-5922
2657-7674
Pojawia się w:
Eco-Energetics: technologies, environment, law and economy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Somatotype variables related to strength and power output in male basketball players
Autorzy:
Buśko, K.
Pastuszak, A.
Lipińska, M.
Gryko, K.
Powiązania:
https://bibliotekanauki.pl/articles/306234.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mężczyzna
koszykówka
somatotyp
siła
skok
male
basketball
Somatotype
strength
power
vertical jump
Opis:
The purpose of this study was to investigate the relationship between somatotype, muscular strength, power output measured in maximal cycle ergometer exercise bouts, and maximal power output and height of rise of the body mass centre (jump height) measured in akimbo counter movement jump (ACMJ), counter movement jump (CMJ) and spike jump (SPJ), in male basketball players. Methods: Thirteen male basketball players (second division, age 19.4±0.8 years, body height 192.9±5.6 cm, body mass 88.8±8.6 kg, training experience 9.3±0.8 years) participated in the study. Somatotype was determined using the Heath-Carter method. Maximal joint torques were measured under static conditions. Power output was measured in 2 maximal cycle ergometer exercise bouts, 10 s each, with increasing external loads equal to 7.5 and 10.0% of the body weight (BW). All jump trials (ACMJ, CMJ and SPJ) were performed on a force plate. Results: The mean somatotype of basketball players amounted to: 2.8-4.2-3.2. Sum of the joint torques for left and right lower extremities (0.613), trunk (0.631) and all six measured muscle groups (0.647) were significantly correlated (p<0.05) with mesomorphy and ectomorphy. Conclusion: It can be assumed that basketball players’ anthropometric characteristics can influence their level of performance but it is not a decisive factor.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 2; 161-167
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerometer profile of motion of the pelvic girdle in butterfly swimming
Autorzy:
Staniak, Z.
Buśko, K.
Górski, M.
Pastuszak, A.
Powiązania:
https://bibliotekanauki.pl/articles/306410.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
pływanie
przyspieszenie
prędkość
swimming
butterfly swimming
acceleration
velocity
profile of pelvic girdle motion
Opis:
Purpose: The aim of the study was to develop a method to measure and analyse kinematics of movement of the pelvic girdle in butterfly swimming in order to support training of technical skills. Methods: A device for recording triaxial accelerations and triaxial rotational angular velocities was mounted on the dorsal part of the pelvic girdle of athlete. The measurements were performed in ten elite butterfly swimmers (age: 23.1 ± 3.7 years, body height: 187.6 ± 4.3 cm, body mass 83.4 ± 6.33 kg). The task of the athlete was to swim one length of short course pool at maximal intensity. Individual mean graphical and numerical profiles of the kinematics of the movement of the pelvic girdle was computed, within the average cycle based on five consecutive cycles. Results: Statistical analysis of numerical individual parameters of profiles of the athletes studied revealed statistically significant differences between the swimmers. Statistically significant correlations were also found between personal best times in 50 m swimming (r = –0.76, p < 0.05) and 100 m swimming (r = –0.76, p < 0.05) and duration of the part of the cycle connected with the decline in velocity from maximum translational motion velocity obtained during propulsion with the upper and lower limbs to minimum value of the velocity obtained before the beginning of propulsion only with the lower limbs. Conclusion: The proposed measurement method, presentation and analysis of the profile of the pelvic girdle motion in butterfly swimming represents a good tool for fast and effective qualitative and quantitative biomechanical evaluation of movement technique components.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 159-167
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Somatotype : variables related to muscle torque and power output in female volleyball players
Autorzy:
Buśko, K.
Lewandowska, J.
Lipińska, M.
Michalski, R.
Pastuszak, A.
Powiązania:
https://bibliotekanauki.pl/articles/307269.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
female
volleyball players
somatotype
strength
power
jump
wytrzymałość
energia
skok
Opis:
The purpose of this study was to investigate the relationship between somatotype, muscle torque, maximal power output and height of rise of the body mass centre measured in akimbo counter movement jump (ACMJ), counter movement jump (CMJ) and spike jump (SPJ), and power output measured in maximal cycle ergometer exercise bouts in female volleyball players. Fourteen players participated in the study. Somatotype was determined using the Heath–Carter method. Maximal muscle torque was measured under static conditions. Power output was measured in 5 maximal cycle ergometer exercise bouts, 10 s each, at increasing external loads equal to 2.5, 5.0, 7.5, 10.0 and 12.5% of body weight (BW). All jump trials (ACMJ, SPJ and CMJ) were performed on a force plate. The mean somatotype of volleyball players was: 4.9-3.5-2.5. The value of the sum of muscle torque of the left upper extremities was significantly correlated only with mesomorphic component. Mesomorphic and ectomorphic components correlated significantly with values of maximal power measured during ACMJ and CMJ. Power output measured in maximal cycle ergometer exercise bouts at increasing external loads equal to 2.5, 5.0 and 7.5% of BW was significantly correlated with endomorphy, mesomorphy and ectomorphy.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 2; 119-126
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Development of Rapidly Solidified Magnesium – Copper Ribbons
Autorzy:
Pastuszak, M.
Cieślak, G.
Dobkowska, A.
Mizera, J.
Kurzydłowski, K. J.
Powiązania:
https://bibliotekanauki.pl/articles/958209.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnesium-based alloys
rapid solidification
microstructure
mechanical properties
corrosion properties
Opis:
The aim of the present work was to plan and carry out an experiment consisting of amorphization of industrial magnesium alloy WE 43 (Mg - 4 Y - 3 RE - 0.5 Zr) modified by the copper addition. Investigated alloy modified with 20% of copper was rapidly quenched with the use of melt spinning technique. The effects of cooling rate on the structure and properties of the obtained material were extensively analyzed. The structure and phase analysis of samples were examined using X-ray diffraction method (XRD) while the thermal stability of the samples was determined by differential scanning calorimetry (DSC). Microstructure observations were also conducted. The microhardness tests (HV0.02) and corrosion resistance tests were carried out to investigate the properties of the material. Corrosion resistance measurements were held using a typical three-electrode system. As the result of the research, the effect of cooling rate on microstructure and properties of investigated alloy was determined.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2B; 1083-1088
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated Communications System for the Remote Operation of Unmanned Aerial Vehicle
Autorzy:
Kurek, K.
Keller, T.
Modelski, J.
Yashchyshyn, Y.
Pastuszak, G.
Darmetko, M.
Bajurko, P.
Powiązania:
https://bibliotekanauki.pl/articles/116567.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
communication system
remote operation
wireless system
Opis:
The aim of the paper is to present the concept of the integrated system dedicated for communication and remote operation of the unmanned aerial vehicle (UAV). In the paper the concept and realization of this kind of wireless communications system is presented. The system consists of two integrated solutions – unidirectional broadcast transmission of video, audio and data from UAV to the operators within the mobile command centre and two‐way communication with the telemetry and control subsystem. The systems are integrated within the single chassis and placed on the UAV to ensure proper operation of the flying robot. The specific elements of the system are presented as well as main requirements and connected with them development methods are also discussed in the paper.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 2; 235-242
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of episodic events in the Baltic Sea – combined in situ and satellite observations
Autorzy:
Lysiak-Pastuszak, E.
Bartoszewicz, M.
Bradtke, K.
Darecki, M.
Drgas, N.
Kowalczuk, P.
Krasniewski, W.
Krezel, A.
Krzyminski, W.
Lewandowski, L.
Mazur-Marzec, H.
Piliczewski, B.
Sagan, S.
Sutryk, K.
Witek, B.
Powiązania:
https://bibliotekanauki.pl/articles/48563.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
Ferry Box project
algal bloom
hepatotoxin
satellite image
coastal water
oceanic water
salinity
temperature
Opis:
A project was developed concerning the operational system of surveillance and the recording of episodic events in the Baltic Sea. In situ information was to be combined with multi-sensory satellite imagery to determine the extent of algal blooms, to track their evolution and that of rapid environmental events like hydrological fronts. The main element of the system was an autonomous Ferry Box module on a ferry operating between Gdynia and Karlskrona, automatically measuring temperature, salinity and chlorophyll a fluorescence. At pre-selected locations, discrete water samples were collected, which were subsequently analysed for their phytoplankton content, and algal hepato- and neurotoxins; they were also used in toxicity tests with Artemia franciscana.
Źródło:
Oceanologia; 2012, 54, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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