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Tytuł:
Analiza wydajności silnika Unity3D w aspekcie symulacji cząsteczkowych
Efficiency analysis of Unity3D engine in terms of particle simulation
Autorzy:
Walczyna, M.
Plechawska-Wójcik, M.
Powiązania:
https://bibliotekanauki.pl/articles/98158.pdf
Data publikacji:
2017
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
cząsteczka
system cząsteczek
Unity 3D
wydajność
symulacja
particle
particle system
efficiency
simulation
Opis:
Dokument ten przedstawia badania w sektorze wydajności cząsteczek utworzonych przez wbudowany w Unity3D system cząsteczek oraz tworzonych poprzez skrypt napisanym w języku C#. Autor skupił się na zbadaniu wpływu poszczególnych zadań na szybkość renderowania klatki, różnicy jakie występują podczas generowania cząsteczek przez system cząsteczek, a tych generowanych przez skrypt oraz jak duży wpływ ma złożoność siatki cząsteczki generowanej na zachwianie wydajności aplikacji. W tym celu, z użyciem Unity3D, Microsoft Visual Studio oraz Blendera, została utworzona aplikacja na komputery z systemem Windows która pozwala na dostosowanie parametrów symulacji (liczby generowanych cząsteczek, kształtu cząsteczki – kula, sześcian).
This document reviews research in efficiency analysys of particles created by Unity 3D built-in particle system compared to those created via sctript written in C# language. Author focused his research on examining the impact of the various tasks on the speed of rendering frames, a difference which occur during the generation of particle by particle system and those generated by a script, and how influential is the complexity of the mesh particles generated on the application performance. For this purpose, using Unity3D, Microsoft Visual Studio and Blender, an applications for computers that are ruunniong on Windows system was created, application allows to adjust the simulation parameters (the number of generated particles, particle shape - sphere, cube).
Źródło:
Journal of Computer Sciences Institute; 2017, 3; 59-63
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza przestrzeni roboczej układu więzadeł stawu skokowego górnego w płaszczyźnie strzałkowej i czołowej - badania wstępne
A workspace analysis for a ligament system of an upper ankle joint in sagittal and frontal plane - a preliminary study
Autorzy:
Mazur, Marta
Ciszkiewicz, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2201482.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
układ wieloczłonowy
procedura numeryczna
stopa
goleń
multi-particle system
numerical procedure
foot
shin
Opis:
Celem pracy była analiza przestrzeni roboczej układu więzadeł stawu skokowego górnego. Na potrzeby badań przygotowano trójwymiarowy model wieloczłonowy górnego stawu skokowego, który zawierał dwa ciała sztywne: nieruchomą goleń i kości stopy. Ciała te połączone były ze sobą układem trójwymiarowych cięgien, które zastępowały więzadła. Przestrzeń roboczą stawu wyznaczono poprzez iteracyjną zmianę położenia kości stopy. Na podstawie otrzymanych wyników stwierdzono, że przestrzeń robocza górnego stawu skokowego zdeterminowana jest głównie przez geometrię więzadeł położonych po jego bocznej stronie.
The aim of this study was to analyze the workspace of a ligament system of an upper ankle joint. To facilitate this research, a spatial multibody model of an upper ankle joint was prepared. The model contained two rigid bodies corresponding to the lower leg and the foot. The bodies were connected by a system of three-dimensional cables representing the ligaments. The workspace was computed by iteratively modifying the location of the foot. The obtained results suggest that the workspace of the upper ankle joint is mostly determined by the geometry of the ligaments located on its medial side.
Źródło:
Aktualne Problemy Biomechaniki; 2019, 17; 77--84
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Random jumps with free partially deterministic coalescence
Skoki z częściowo deterministycznym sklejaniem
Autorzy:
Pilorz, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/953401.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
sklejanie
skoki
model agentowy
stek
równanie kinetyczne
układ nieskończonej liczby cząstek
innite particle system
Opis:
The aim of this paper is to discuss a special case of a coalescing random jumps model of infinitely many jumping individuals. Jumps are embedded with repulsion at the target point and coalescence kernel is defined in such a way that for two coalescing individuals the result is deterministically defined. A possible approach to study the dynamics of the system numerically is discussed. It is based on a Poisson approximation of states of the system. Some interesting results of simulations are showed.
Źródło:
Mathematica Applicanda; 2019, 47, 1
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wstęp do komputerowego generowania koryta rzeki z wykorzystaniem systemu cząstek na potrzeby modelowania wirtualnego środowiska
Introduction to computer generation of a riverbed with use of the particle system for modelling the virtual environment
Autorzy:
Warszawski, K.
Zawadzki, T.
Powiązania:
https://bibliotekanauki.pl/articles/154313.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
wirtualna rzeczywistość
System Cząstek
modelowanie terenu
Generowanie koryta rzeki
virtual reality
particle system
landscape modelling
riverbed generation
Opis:
Artykuł przybliża idee zastosowania systemu cząstek do automatycznego deformowania struktur terenowych. Za pomocą proponowanej metody można od podstaw ukształtować krajobraz jak i można jej użyć do deformacji wstępnie predefiniowanego ukształtowania terenu i wzbogacenia jego powierzchni o struktury przypominające formacje powstałe na skutek długotrwałego oddziaływania erozji hydrologicznej, tj. kanion czy koryto rzeki. Ze względu na krótki czas pracy algorytmu, który zbliżony jest do rzeczywistego, metoda pozwala na uzyskanie w rozsądnym czasie wybranych struktur terenowych również na typowych komputerach osobistych.
The paper deals with a method that applies the particle system to modify height-field based landscapes with generation of hydrological erosion like canyons or riverbeds. The authors present a construction of the particle system, its main attributes and its influence on the final product of the modelling process. Performance of the particle-based algorithm is close to real-time, thus it offers the opportunity for fast terrain surface modifications, which enable selected landscapes to be rendered in real-time on typical desktop computers [6, 7]. The main data structure of the modelled terrain is typical height-field, based on a two dimensional array. Each cell represents the altitude at a coordination point defined by rows and columns of this array. This kind of landscape data structure enables fast and simple implementation of the terrain deformation and can be rendered in any virtual reality systems. In the paper there are discussed the basic problems of landscape hydrological erosion deformations and there is proposed a fast alternative to the algorithms based on Computational Fluids Dynamic (CFD) or rainfall erosion [9, 11]. The proposed method is not intended to simulate physically the erosion process but to focus on its results for exploitation in virtual environments in on-line visualisations.
Źródło:
Pomiary Automatyka Kontrola; 2009, R. 55, nr 7, 7; 464-466
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A kinetic equation for repulsive coalescing random jumps in continuum
Autorzy:
Pilorz, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/747233.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Coalescence
coagulation
hopping particles
individual-based model
configuration spaces
infinite particle system
microscopic dynamics
Vlasov scaling
kinetic equation
Opis:
A continuum individual-based model of hopping and coalescing particles is introduced and studied. Its microscopic dynamics are described by a hierarchy of evolution equations obtained in the paper. Then the passage from the micro- to mesoscopic dynamics is performed by means of a Vlasov-type scaling. The existence and uniqueness of solutions of the corresponding kinetic equation are proved.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica; 2016, 70, 1
0365-1029
2083-7402
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact and particle vibration absorbers optimal design
Działanie oraz optymalna konstrukcja dynamicznego absorbera drgań
Autorzy:
Snitynskyy, V.
Kernytskyy, I.
Diveyev, B.
Horbay, O.
Koruniak, P.
Humenyuk, R.
Kokhana, T.
Powiązania:
https://bibliotekanauki.pl/articles/2083884.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
dynamic vibration absorber
particle-based damping system
buffered absorber
optimization
design
Opis:
The paper contemplates the provision of impact or particle dynamic vibration absorber (DVA). An efficient numerical approach based on the theoretical-experimental method is proposed to maximize the minimal damping of modes in a prescribed frequency range for general viscous tuned-mass systems. Methods of decomposition and numerical synthesis on the basis of adaptive schemes are considered. The influence of dynamic vibration absorbers and basic design elastic and damping properties is under discussion. Compact buffered impact absorbers are analysed. One task of this work is to analyse parameters identification of the dynamic vibration absorber and the basic structure. The work focused on a single degree of order (SDOF) system which is equivalent to particle DVA. The simulation provides a close agreement with the measurements over various entire frequency ranges, which means the SDOF is simple yet easy to calculate the damped motion, compared with the experimental results of particle DVA. Examples of the attachment of particle DVA’s and elongated element with multi-mass impact DVA’s are offered. The paper contemplates the provision of the impact multi-mass DVA’s with masses collisions and traction for additional damping. A technique is developed to give the optimal DVA’s for the elimination of excessive vibration in harmonic and impact loaded systems.
Źródło:
Acta Scientiarum Polonorum. Architectura; 2020, 19, 1; 93-102
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of Synchronous Data Streams Processing in the RPC Muon Trigger System of the CMS Experiment
Autorzy:
Poźniak, K. T.
Powiązania:
https://bibliotekanauki.pl/articles/226758.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
synchronization
particle measurements
data acquisition
triggering
measurement system
Opis:
This paper presents signal synchronization aspects in a large, distributed, multichannel RPC Muon Trigger system in the CMS experiment. The paper is an introduction to normalized structure analysis methods of such systems. The method introduces a general model of the system, presented in a form of a network of distributed, synchronous, pipeline processes. The model is based on a definition of a synchronous data stream and its formal, fundamental properties. Theoretical considerations are supported by a practical application of synchronous streams and processes management. The following processes were modeled and implemented in hardware: window synchronization, derandomization, data concentration and generation of test pulses. There are presented chosen results of the model application in the CMS experiment.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 4; 489-502
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of conductive particle contaminationon the insulation system of rotating electrical machines with direct oil cooling
Autorzy:
Yang, Liguo
Pauli, Florian
Zhang, Shimin
Hambrecht, Fabian
Hameyer, Kay
Powiązania:
https://bibliotekanauki.pl/articles/2135735.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cooling
insulation system
particle contamination
partial discharge
surface resistance
Opis:
An integration of the electrical machine and the gearbox is attracting particular attention for the design of modern electric and hybrid drive trains, since it saves overall space and subsequently increases the power density. Another benefit of a high level of integration is that it enables a combined application of oils as both cooling fluid for the electrical machine and as lubrication fluid for the transmission system. In this way, the power density of the integrated drive train can be further increased. During the oil cycling, conductive contaminations may be introduced and subsequently have an influence on the function of the insulation system of the electrical machine. In the present work, the influences of the cooling oil and its conductive contaminations, conductive particles as well as their combination with humidity, on the electrical and dielectric properties of the insulation system are studied. The results show that by application of the cooling oil, the partial discharge inception voltage (PDIV) of the winding insulation increases significantly so that an electrical breakdown is prone to happen before a partial discharge (PD) occurs. With increasing particle contamination, the PDIV of the insulation system decreases significantly, while the capacitance increases. Besides, conductive particles and humidity decrease the surface resistance and surface breakdown voltage of the insulation papers significantly. The results indicate that the conductive particle contaminations can play an important role for the electrical degradation of the insulation system.
Źródło:
Archives of Electrical Engineering; 2022, 71, 3; 789--804
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of the properties and development in technology for obtaining multi-component systems of particle reinforced aluminum and titanium alloys
Autorzy:
Gumen, Olena
Selina, Irina
Kruzhkova, Mariia
Powiązania:
https://bibliotekanauki.pl/articles/31342645.pdf
Data publikacji:
2022
Wydawca:
Politechnika Częstochowska
Tematy:
stopy aluminium
system wieloskładnikowy
żelazo
aluminum alloys
multicomponent system
iron
particle reinforced chase
Opis:
The article analyzes the groundwork on the influence of alloying contaminants on the structure and mechanical properties of aluminum alloys. Aluminum has become widely used in various parts of machine-building due to its physical properties. However, the main task of modern material science is to increase the strength of aluminum alloys. Therefore, today there is the development of materials and alloys based on aluminum with alloying constituents (copper, silicon, magnesium, zinc, mangan), which are administered in aluminum mainly to increase its strength. Especially attractive are properties of aluminum-doped by transition metals, in particular scandium, zirconium, iron, etc. Finally, conclusions are drawn in order to develop a material based on aluminum with increased hardness, durability, and crack resistance.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2022, 11; 17-21
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The new approach to hybrid Kalman filtering, based on the changed order of filters for state estimation of dynamical systems
Autorzy:
Michalski, Jacek
Kozierski, Piotr
Ziętkiewicz, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/378067.pdf
Data publikacji:
2019
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
state estimation
Kalman filtering
particle filtering
power system
quality indices
Opis:
The paper presents a new approach to Hybrid Kalman filtering, composed of Extended Kalman Filter and Unscented Kalman Filter. In known algorithms, the Unscented Kalman Filter algorithm is used as first and the result of this is given as an input to the Extended Kalman Filter. The authors checked modified Hybrid Kalman Filter with changed order of filters using theoretical object, which was created on the basis of power system. Besides traditional method, the modification of Hybrid Kalman Particle Filter was evaluated too. Results were compared with Extended Kalman Filter, Unscented Kalman Filter and Bootstrap Particle Filter. For particle filters the authors compared method estimation qualities for a different number of particles. The estimation quality was evaluated by three quality indices. Based on the obtained results, one can see that the changed order of methods in Hybrid Kalman filter can improve estimation quality.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2019, 97; 181-190
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Particle filtering for the estimation of system mode of operation
Autorzy:
Cadini, F.
Avram, D.
Zio, E.
Powiązania:
https://bibliotekanauki.pl/articles/2069691.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
particle filtering
Monte Carlo
hybrid system
discrete modes of operation
Opis:
Efficient diagnosis and prognosis of system faults depend on the ability to estimate the system state on the basis of noisy measurements of the system dynamic variables and parameters. The system dynamics is typically characterized by transitions among discrete modes of operation, each one giving rise to a specific continuous dynamics of evolution. The estimation of the state of these hybrid dynamic systems is a particularly challenging task because it requires keeping track of the transitions among the multiple modes of system dynamics corresponding to the different modes of operation. In this paper a Monte Carlo estimation method is illustrated with an application to a case study of literature which consists of a tank filled with liquid, whose level is autonomously maintained between two thresholds. The system behavior is controlled by discrete mode actuators, whose states are estimated by a Monte Carlo-based particle filter on the basis of noisy level and temperature measurements.
Źródło:
Journal of Polish Safety and Reliability Association; 2009, 1; 77--86
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Power system state estimation using dispersed particle filter
Autorzy:
Kozierski, P.
Lis, M.
Horla, D.
Powiązania:
https://bibliotekanauki.pl/articles/950942.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
particle filter
power system
state observer
state estimation
dispersed estimation
Opis:
The paper presents a new approach to particle filtering, i.e. Dispersed Particle Filter. This algorithm has been applied to the power system, but it can also be used in other transmission networks. In this approach, the whole network must be divided into smaller parts. As it has been shown, use of Dispersed Particle Filter improves the quality of the state estimation, compared to a simple particle filter. It has been also checked that communication between subsystems improves the obtained results. It has been checked by means of simulation based on model, which has been created on the basis of knowledge about practically functioning power systems.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2014, 8, 3; 35-40
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Function optimization using metaheuristics
Autorzy:
Pilski, M.
Seredyński, F.
Powiązania:
https://bibliotekanauki.pl/articles/92887.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
particle swarm optimization (PSO)
artificial immune system
genetic algorithm
function optimization
Opis:
The paper presents the results of comparison of three metaheuristics that currently exist in the problem of function optimization. The first algorithm is Particle Swarm Optimization (PSO) - the algorithm has recently emerged. The next one is based on a paradigm of Artificial Immune System (AIS). Both algorithms are compared with Genetic Algorithm (GA). The algorithms are applied to optimize a set of functions well known in the area of evolutionary computation. Experimental results show that it is difficult to unambiguously select one best algorithm which outperforms other tested metaheuristics.
Źródło:
Studia Informatica : systems and information technology; 2006, 1(7); 77-91
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Power system oscillation damping controller design: a novel approach of integrated HHO-PSO algorithm
Autorzy:
Devarapalli, Ramesh
Kumar, Vikash
Powiązania:
https://bibliotekanauki.pl/articles/1845528.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Harris hawk optimization
power system stabilizers
STATCOM
FACTS
particle swarm optimization
Opis:
The hybridization of a recently suggested Harris hawk’s optimizer (HHO) with the traditional particle swarm optimization (PSO) has been proposed in this paper. The velocity function update in each iteration of the PSO technique has been adopted to avoid being trapped into local search space with HHO. The performance of the proposed Integrated HHO-PSO (IHHOPSO) is evaluated using 23 benchmark functions and compared with the novel algorithms and hybrid versions of the neighbouring standard algorithms. Statistical analysis with the proposed algorithm is presented, and the effectiveness is shown in the comparison of grey wolf optimization (GWO), Harris hawks optimizer (HHO), barnacles matting optimization (BMO) and hybrid GWO-PSO algorithms. The comparison in convergence characters with the considered set of optimization methods also presented along with the boxplot. The proposed algorithm is further validated via an emerging engineering case study of controller parameter tuning of power system stability enhancement problem. The considered case study tunes the parameters of STATCOM and power system stabilizers (PSS) connected in a sample power network with the proposed IHHOPSO algorithm. A multi-objective function has been considered and different operating conditions has been investigated in this papers which recommends proposed algorithm in an effective damping of power network oscillations.
Źródło:
Archives of Control Sciences; 2021, 31, 3; 553-591
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jacking and energy consumption control over network for jack-up rig: simulation and experiment
Autorzy:
Do, Viet-Dung
Dang, Xuan-Kien
Tran, Tien-Dat
Pham, Thi Duyen-Anh
Powiązania:
https://bibliotekanauki.pl/articles/32912855.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
networked control system
environmental forces
energy consumption
Fuzzy Particle Swarm Optimization
jacking system
time-delay
Opis:
Oil and gas projects differ from regular investment projects in that they are frequently large-scale, categorised as vital national projects, highly technological, and associated with significant risks. Drilling rigs are a crucial component of the oil and gas sector and the majority of the systems and equipment aboard drilling rigs are operated automatically. Consequently, it is crucial to address the topic of an advanced control theory for off-shore systems. Network technology connected to control is progressively being used to replace outdated technologies, together with other contemporary technologies. In this study, we examine how to adapt a networked control jacking system to the effects of internal and external disturbances with a time delay, using a Fuzzy controller (FC)-based particle swarm optimisation. To demonstrate the benefit of the proposed approach, the developed Fuzzy Particle Swarm Optimisation (FPSO) controller is compared with the fuzzy controller. Finally, the results from simulations and experiments utilising Matlab software and embedded systems demonstrate the suitability of the proposed approach.
Źródło:
Polish Maritime Research; 2022, 3; 89-98
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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