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Wyświetlanie 1-15 z 226
Tytuł:
Lying by Omission: Experimental Studies
Autorzy:
Chernak, Ezri
Dietrich, Kurt
Raspopovic, Ashley
Turri, Sarah
Turri, John
Powiązania:
https://bibliotekanauki.pl/articles/2142983.pdf
Data publikacji:
2021-06-30
Wydawca:
Uniwersytet Warszawski. Wydział Filozofii
Tematy:
lying
assertion
communication
omission
signaling
Opis:
Leading theories of lying disagree on many points, but they agree on the following assumption: lying essentially involves asserting. The possibility of lying by omission poses a challenge to that shared assumption. To lie by omission is to lie by not asserting. This paper is the first experimental investigation of whether lying by omission is conceptually possible, according to our ordinary, shared lying concept. Overall, our results support, without proving, that it is not possible. Based on the present findings, we hypothesize that to the extent that people are tempted to call an omission a “lie,” it is for lack of a better word. When provided more flexibility to express themselves, almost no one in our studies counted an omission as a lie.
Źródło:
Filozofia Nauki; 2021, 29, 2; 189-208
1230-6894
2657-5868
Pojawia się w:
Filozofia Nauki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nutrient balances and field experimental studies
Autorzy:
Kadar, I
Powiązania:
https://bibliotekanauki.pl/articles/798361.pdf
Data publikacji:
1993
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
fertilization
agriculture
nutrient turnover
soil
nutrient balance
mineral fertilizer
poor acid soil
winter wheat monoculture
Hungary
superphosphate
Opis:
The Author tries to find an answer to the question: how fertilization practice of our days meets the former fertilizing philosophy? When analysing the NPK balances of Hungarian agriculture, it can be seen that the surplus appearing in the nutrient galance-sheet is a consequence of intensive fertilization in the past. The Author discusses some important factors related to liming and fertilization on poor acid soils, K- and P-responses of some crops and soil fertility and future tasks with regard to mineral fertilization. In conclusion the Author presents an opinion that the need for mineral fertilizer in Hungarian agriculture could be minimized, having the same or even higher yield levels in the near future and applying about 20-30 % less NPK fertilizers based on a more sound recommendation.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1993, 400
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania doświadczalne przyczepności
Experimental studies of bond
Autorzy:
Burdziński, Marcin
Niedostatkiewicz, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/128917.pdf
Data publikacji:
2020
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
przyczepność
pull out
beton
pręt żebrowany
konstrukcja żelbetowa
bond
concrete
ribbed steel bar
reinforced concrete structure
Opis:
W artykule zostało przedstawione powszechnie znane wśród badaczy zjawiska przyczepności badanie typu pull out. Zostały opisane wybrane próbki wykorzystywane w tych eksperymentach, sposób prowadzenia badań oraz uzyskiwane z nich rezultaty, a także opisano funkcję przyczepności uzyskiwaną na podstawie wspomnianego testu. W artykule została zaprezentowana własna koncepcja badań dotycząca analizy przyczepności, która w przyszłości ma stanowić podstawę do stworzenia modelu numerycznego służącego do symulacji współpracy betonu i stalowych żebrowanych prętów zbrojeniowych w różnych elementach żelbetowych.
The article presents a pull out test commonly known among bond researchers. Selected specimens used in these experiments, the method of testing and the results obtaining from them were described, and the bond function obtained on the basis of the said test was characterized. In addition, the article presents own concept of experimental bond analysis, which in the future will be formed the basis for creating a numerical model for simulating the cooperation of concrete and steel ribbed reinforcing bars in various reinforced concrete elements.
Źródło:
Builder; 2020, 24, 6; 12-15
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time constraints on experimental studies of lead apatites
Autorzy:
Topolska, Justyna
Bajda, Tomasz
Puzio, Bartosz
Manecki, Maciej
Kozub-Budzyń, Gabriela
Powiązania:
https://bibliotekanauki.pl/articles/2058621.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pyromorphite
vanadinite
experimental mineralogy
dissolution
solubility synthesis
Opis:
The paper presents the results of experimental studies on the synthesis and thermodynamic stability of selected Pb-apatites in terms of criteria determining termination of the experiments. Based on the case study, we indicate difficulties in analysing the obtained experimental data. Time-resolved sampling of precipitate formed during a dropwise synthesis of pyromorphite was performed and the results were compared to the literature data. It has been concluded that the Ostwald ripening time for synthesized solids depends primarily on the chemical composition of the intended Pb-apatite phase. We presented that heterogeneity of precipitate affects its dissolution in terms of repeatability of the results and equilibrating time. A unique 9-year-long experiment on vanadinite stability at a pH range from 2.0-6.0 revealed that among all tested dissolution conditions only the reactions at the pH = 3.5 can perform as the basis for some thermodynamic calculations. It has been concluded that the rate of phase transitions in the Pb-apatites group can be misleading in terms of determining the equilibrium of the system, and the experimental setup designed particularly to provide reliable controls in this aspect should be involved. Means in this respect have been proposed.
Źródło:
Geological Quarterly; 2019, 63, 4; 721--728
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of excavation support safety based on experimental studies
Autorzy:
Gorska, K.
Wyjadłowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/178652.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
soldier pile wall
inclinometer measurements
φ/c reduction procedure
Opis:
The article presents the results of inclinometric measurements and numerical analyses of soldier-pile wall displacements. The excavation under investigation was made in cohesive soils. The measurements were conducted at points located at the edge of the cantilever excavation support system. The displacements of the excavation support observed over the period of three years demonstrated the pattern of steady growth over the first two months, followed by a gradual levelling out to a final plateau. The numerical analyses were conducted based on 3D FEM models. The numerical analysis of the problem comprise calculations of the global structural safety factor depending on the displacement of the chosen points in the lagging and conducted by means of the φ/c reduction procedure. The adopted graphical method of safety estimation is very conservative in the sense that it recognizes stability loss quite early, when one could further load the medium or weaken it by further strength reduction. The values of the Msf factor are relatively high. This is caused by the fact that the structure was designed for excavation twice as deep. Nevertheless, the structure is treated as a temporary one.
Źródło:
Studia Geotechnica et Mechanica; 2015, 37, 3; 19-29
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental studies of a moveable wall to a shock wave
Autorzy:
Górniak, A.
Kaźmierczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/245831.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
pedestrian protection
pyrotechnic actuators
shock wave
Opis:
This paper explains the experiment conducted in order to reveal the response of a movable wall on a shock wave generated by ignition of a pyrotechnic gas generator dedicated for the automotive industry. This same kind of a pyrotechnic gas generator was used in each test. The test station consists on a pyrotechnic actuator in which the movable wall is expressed as a piston. The pyrotechnic actuator was specially design for such type of an investigation. Its design allows withstanding numerous tests without affecting the accuracy, and it is prepared to pressure measurement in three locations on the cylinder. However, here only the pressures measured in the vicinity of a cylinder bottom are under deliberation. This paper focusses on a shape of the piston influence on its movement characteristics (i.e. stroke velocity and acceleration). The experiment has shown that there is an influence of the shape of the movable wall on its movement characteristic. Furthermore, the experiment explained here constitutes a comparison of a piston velocity and acceleration with a flat and concave front surface. The dynamic pressure measurement have proven that the reflected shock wave increases its speed affecting the piston movement.
Źródło:
Journal of KONES; 2013, 20, 3; 145-151
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Studies of Electronic Phase Separation in High Temperature Superconductors
Autorzy:
Szymczak, H.
Szymczak, R.
Powiązania:
https://bibliotekanauki.pl/articles/1860950.pdf
Data publikacji:
1994-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.25.Ha
74.72.-h
Opis:
Experimental research on macroscopic phase separation in La$\text{}_{2}$CuO$\text{}_{4+\delta}$ superconductor and photo-doped cuprates is reviewed. It is shown that the properties of the mixed-phase state strongly depend on the shape and size of the phase domains formed during the phase separation process. The interplay of magnetic and superconducting properties in the mixed-phase state is considered in details. The mechanisms driving the phase separation in La$\text{}_{2}$CuO$\text{}_{4}$ and photo-doped materials are discussed in connection with presented experimental results.
Źródło:
Acta Physica Polonica A; 1994, 85, 1; 79-88
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustic Simulation and Experimental Studies of Theatres and Concert Halls
Autorzy:
Kamisiński, T.
Powiązania:
https://bibliotekanauki.pl/articles/1537463.pdf
Data publikacji:
2010-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.55.Ka
43.55.Mc
43.55.Br
Opis:
Paper presents a numerical simulation of the acoustics of selected concert halls performed using CATT-acoustic software, and the results of acoustic measurements performed in these spaces.
Źródło:
Acta Physica Polonica A; 2010, 118, 1; 78-82
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sail catamaran with hybrid propulsion, design, theoretical and experimental studies
Autorzy:
Litwin, Wojciech
Piątek, Daniel
Leśniewski, Wojciech
Marszałkowski, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/32900237.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
sail catamaran
green shipping
zero emission
hybrid propulsion
Opis:
The development of modern lithium batteries and propulsion systems now allows the use of complex propulsion systems for vessels of various sizes. As part of the research and implementation project, a parallel hybrid drive system was designed, built and then tested in the laboratory. The experimental studies conducted allowed for the measurements of power, fuel consumption and electric power distribution in various operating modes of the propulsion system. The research proves that in the analysed case, the hybrid parallel system meets the demand for electric energy during a typical cruise scenario, and thus there is no need to install a power generator on the yacht.
Źródło:
Polish Maritime Research; 2022, 2; 12-18
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental studies of low-frequency acoustic fields in a shallow sea
Autorzy:
Luchinin, A. G.
Powiązania:
https://bibliotekanauki.pl/articles/332794.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
experimental studies
acoustic fields
shallow sea
Opis:
The results of the studies of excitation and propagation of low-frequency acoustic fields in a shallow sea, which have been carried out at the IAP RAS for several years, are discussed. A novel equipment complex designed specially for these experiments and intended for the selective excitation and reception of waveguide modes is described. Examples of measurements of various characteristics of low-order mode acoustic signals are given, which demonstrate high efficiency of the applied equipment and measurement technique.
Źródło:
Hydroacoustics; 2009, 12; 117-126
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Studies on Charging Operation of a Compact Repetitive Tesla Transformer
Autorzy:
Zhang, Z.
Zhang, J.
Yang, H.
Qian, B.
Meng, Z.
Li, D.
Wang, S.
Cao, Y.
Zhou, W.
Powiązania:
https://bibliotekanauki.pl/articles/1807860.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
84.30.Ng
84.30.Jc
84.30.Qi
84.70.+p
Opis:
Charging operations of a compact Tesla transformer were experimentally investigated, in single-shot and rep-rate (50 pps for 1 s) modes, respectively. The charging limitations were also explored. The experimental results were compared and analyzed. The maximum secondary charging voltages of the Tesla transformer were measured to be 380 kV and 300 kV in single-shot and rep-rate modes, respectively. The RMS pulse-to-pulse instability of the secondary charging voltage is generally less than 10% but increases with the increasing initial voltage across the primary capacitor. Since the secondary capacitor of the Tesla transformer is a pulse forming line (PFL), continued operation is possible if there is breakdown in the PFL. Furthermore, operation can even be continued under occasional breakdown for some pulses, without the effects on the operations of subsequent pulses.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 973-975
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental studies of the quality of embossed characters of the Braille alphabet
Autorzy:
Barczyk, R.
Jasińska-Choromańska, D.
Powiązania:
https://bibliotekanauki.pl/articles/200563.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tactile reading
Braille alphabet
Braille characters
visual impairment
measurement of parameters of Braille dots
czytanie dotykowe
alfabet Braille'a
znaki Braille'a
niedowidzenie
pomiar parametrów kropek brajlowskich
Opis:
The paper presents studies pertaining to the quality of embossed characters of the Braille alphabet used, among other applications, for tagging drug labels. The following parameters of embossed inscriptions were measured: height, diameter of the dots and surface roughness (18 samples with various combinations of their values). 48 blind individuals assessed the quality of the printed text. Statistical analysis proved that a text with dots having height of 0.9 millimeter, diameter of 1.6 millimeters and roughness Ra of about 1 micrometer to be the best. The samples had been made using two different methods of rapid prototyping: PolyJet and SLS. 3D printing is increasingly popular and the studies proved the usefulness of these methods for labeling with embossed inscriptions, due to the repeatability, durability and quality they ensure. The assessing group of blind individuals was comprised of 24 persons 14–17 years old and other 24 persons aged over 60 who were not proficient in reading Braille alphabet, This allows to conclude that a text featuring the above values of the parameters will be easy to read for the majority of blind persons.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 607-614
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental studies and finite element simulation of ultrasonic welding of Cu alloy
Autorzy:
Mohan-Raj, N.
Kumaraswamidhas, L. A.
Arungalai-Vendan, S.
Powiązania:
https://bibliotekanauki.pl/articles/199854.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic
wire
Cu alloys
finite element method
ultradźwięk
drut
stopy Cu
metoda elementów skończonych
Opis:
This research study aims to investigate the mechanical and metallographical aspects of ultrasonic welding of Cu-Cu wires. Experimental trials have been conducted and observations have been recorded as a database that collates parametric, quality and strength aspects of various weldments. Destructive testing and metallurgical characterizations have been carried out to examine the strength and integrity of the weldment. The key focus of this research attempt is laid on determining and evaluating the factors that governs the strength of the weldment. Metallurgical characterizations reveal vital information on the weld integrity and the extent of grain distribution. Further, FEM is employed to understand the deformation and thermal aspects involved in Cu-Cu welding using ultrasonics. The numerical model may provide an insight into the thermal phenomenon governing the joining process and subsequently estimation of the impact. Response surface methodology is employed to identify the parametric interdependencies and subsequently determine the optimized range.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 535-546
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania procesu hamowania pojazdu szynowego
Experimental studies of braking process of the tram
Autorzy:
Dychto, R.
Pietruszewski, R.
Powiązania:
https://bibliotekanauki.pl/articles/313294.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
pojazdy szynowe
hamowanie
badania
rail vehicles
braking
research
Opis:
W artykule omówiono cykl badań procesu hamowania pojazdu szynowego jaki przeprowadzono w Katedrze Pojazdów i Podstaw Budowy Maszyn Politechniki Łódzkiej. Szczegółowo omówiono metodę pomiarową opartą o Rozporządzenie Ministra Infrastruktury z dnia 28 stycznia 2011r. Wykazano zalety i wady każdej z metod ze szczególnym uwzględnieniem metod pośrednich jako obarczonych większym błędem pomiarowym. Dodatkowo dokonano pomiarów drogi hamowania z użyciem piasecznicy na torowiskach o różnym współczynniku przyczepności, poddając ocenie zasadność stosowania urządzeń wspomagających proces hamowania.
The subject of this paper is closely related to series of researches which were done in Department of Vehicles and Fundamentals of Machine Design - Technical University of Lodz. The mentioned studies was focused on tram braking problem. Presented researches was showing differences between methods of measuring braking distance of trams related to regulations commonly use to perform such tests. The main purpose of presented researches was to show differences between braking distance of the tram using sanding system and without it. The diagrams showing the comparison was clearly presented in paper.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 913-917
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental studies of leading edge vortex control of delta wing micro aerial vehicle
Autorzy:
Sibilski, K.
Żyluk, A.
Wróblewski, W.
Powiązania:
https://bibliotekanauki.pl/articles/246620.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
MIcro Aerial Vehicles
unconventional control effectors
Opis:
It is known, that small disturbances generated by the micro actuators can alter large-scale vortex structures, and consequently, generate appreciable aerodynamic moments along all three axes for flight control. In the current study, we explored the possibility of independently controlling these moments. We perform analytical simulations showing optimal position of LEX generators, and water tunnel measurements showing effectiveness of MEX generators as MAV control devices. We applied array of actuators located on either the forward or the rear half section of the leading edge. Both one- and two-sided control configurations have also been investigated. Experimental results showed that asymmetric vortex pairs were formed, which leads to the generation of significant torques in all three axes. The article presents typical vortical flow over a delta wing, water tunnel at Wroclaw University of Technology, experimental setup and procedures, static test results on water tunnel testing including normal forces, pitching and yawing moments, maximum values of rolling, pitching, and yawing moment coefficients, effectiveness of pitching and yawing control.
Źródło:
Journal of KONES; 2018, 25, 3; 393-402
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 226

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