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Tytuł:
Effect of Process Variables on Friction Stirred Microstructure and Surface Hardness of AZ31 Magnesium Alloy
Autorzy:
Kim, Jae-Yeon
Hwang, Jung-Woo
Lee, Seung-Mi
Hyun, Chang-Young
Park, Ik-Keun
Byeon, Jai-Won
Powiązania:
https://bibliotekanauki.pl/articles/355106.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
friction stir process
AZ31 alloy
diamond particle
process variable
grain size
Opis:
Effects of various friction stir processing (FSP) variables on the microstructural evolution and microhardness of the AZ31 magnesium alloy were investigated. The processing variables include rotational and travelling speed of the tool, kind of secondphase (i.e., diamond, Al2 O3 , and ZrO2 ) and groove depth (i.e., volume fraction of second phase). Grain size, distribution of second phase particle, grain texture, and microhardness were analyzed as a function of the FSP process variables. The FSPed AZ31 com-posites fabricated with a high heat input condition showed the better dispersion of particle without macro defect. For all composite specimens, the grain size decreased and the microhardness increased regardless of the grooved depth compared with that of the FSPed AZ31 without strengthening particle, respectively. For the AZ31/diamond composite having a grain size of about 1 μm, microhardness (i.e., about 108 Hv) was about two times higher than that of the matrix alloy (i.e., about 52 Hv). The effect of second phase particle on retardation of grain growth and resulting hardness increase was discussed.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 3; 907-911
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial Analysis of Coastal Vulnerability Index to Sea Level Rise in Biak Numfor Regency (Indonesia)
Autorzy:
Rumahorbo, Basa T.
Warpur, Maklon
Tanjung, Rosye H. R.
Hamuna, Baigo
Powiązania:
https://bibliotekanauki.pl/articles/24201621.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
spatial mapping
coastal vulnerability
coastal geologic variable
physical process variable
sea level rise
Biak Island
Opis:
Assessing the vulnerability of coastal areas is important in evaluating impact of sea level rise due to global climate change. This study aimed to spatially analyze and map the vulnerability level of the Biak Numfor Regency’s coastal area on Biak Island to the threat of sea level rise. The study area is limited to 500 m from the coastline and is divided into 383 grid cells. The Coastal Vulnerability Index (CVI) method was used to map the level of vulnerability of coastal areas based on four coastal geological variables (coastal elevation, coastal slope, geomorphology, and shoreline change) and three ocean physical process variables (tidal range, average significant wave height, and relative sea level rise). The results showed that the coastal areas of Biak Numfor Regency, belonging to the low, medium and high-risk vulnerability categories, were 77,685.63 km (32.18%), 159,084.38 km (65.74%), and 5,024.96 km (2.08%), respectively. The variables that contribute significantly to the level of vulnerability are coastal elevation, coastal slope, coastal geomorphology, and shoreline changes due to abrasion compared to tidal range, significant wave heights, and sea level rise rates. Vulnerability studies of other variables that can contribute to the vulnerability of coastal areas are needed, such as socio-economic variables and the impact of human activities on changes in the coastal environment, to obtain a comprehensive CVI value in supporting coastal mitigation planning efforts against sea level rise disasters so that they are more focused.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 113--125
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical study of the motion characteristics of a variable length connecting rod mechanism
Autorzy:
Chen, Jiadui
Liu, Qinghua
Yang, B.
Powiązania:
https://bibliotekanauki.pl/articles/38882766.pdf
Data publikacji:
2022
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
variable length connecting rod engine
variable stroke
variable compression ratio
kinematic model
piston movement process
Opis:
The sustainable development of society calls for automobile engines with high efficiency and very low pollutant emission. The variable compression ratio (VCR) technique is one of the effective methods to deal with this issue. Engines with variable length connecting rod (VLEs) yield higher efficiency than other VCR engines. This paper focuses on a variable length connecting rod mechanism that achieves a VCR by changing the positions of the bottom dead center (BDC) and the top dead center (TDC) (controlled by the rotation of the eccentric sleeve) relative to the crankshaft. A kinematic model is also proposed to calculate and analyze the motion characteristics of the variable length connecting rod mechanism. The effects of eccentric size and eccentric phase on the piston motion, the TDC and BDC positions, the stroke length, the crank angles at TDC and BDC, and the compression ratio are studied in detail. It is found that the piston exhibits good motion characteristics with proper eccentric size and eccentric phase, and the compression ratio can be adjusted by varying the eccentric phase with proper eccentric size. A comparison between the proposed mechanism with another mechanism is also conducted. Therefore, this work can serve as a necessary reference for designing, analyzing, and optimizing VLEs.
Źródło:
Engineering Transactions; 2022, 70, 1; 3-22
0867-888X
Pojawia się w:
Engineering Transactions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Response of linear system to α-stable Levy input
Autorzy:
Walczak, J.
Mazurkiewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/97700.pdf
Data publikacji:
2012
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
random variable
Lévy process
linear systems
SISO system
Opis:
This article suggests the method of analysis stochastic processes in deterministic linear SISO system of first order. Using the definition of α-stable random variable, the definition of α-stable Levy process has been introduced and presented their properties. Transformation of α-stable white noise process in the system has been investigated as well. Obtained results has been illustrated by an example.
Źródło:
Computer Applications in Electrical Engineering; 2012, 10; 50-60
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of the Inverse Gaussian Process with hazard rate functions-based drifts applied to degradation modelling
Autorzy:
Rodríguez-Picón, Luis Alberto
Méndez-González, Luis Carlos
Pérez-Olguín, Iván JC
Hernández-Hernández, Jesús Israel
Powiązania:
https://bibliotekanauki.pl/articles/2175136.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
inverse Gaussian process
hazard rate function
degradation rate
variable drift
Opis:
The stochastic modelling of degradation processes requires different characteristics to be considered, such that it is possible to capture all the possible information about a phenomenon under study. An important characteristic is what is known as the drift in some stochastic processes; specifically, the drift allows to obtain information about the growth degradation rate of the characteristic of interest. In some phenomenon’s the growth rate cannot be considered as a constant parameter, which means that the rate may vary from trajectory to trajectory. Given this, it is important to study alternative strategies that allow to model this variation in the drift. In this paper, several hazard rate functions are integrated in the inverse Gaussian process to describe its drift in the aims of individually characterize degradation trajectories. The proposed modelling scheme is illustrated in two case studies, from which the best fitting model is selected via information criteria, a discussion of the flexibility of the proposed models is provided according to the obtained results.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 3; 590--602
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk analysis method by the extreme data of dependent exogenous variables
Autorzy:
Tereshchenko, Ihor
Tereshchenko, Anton
Bilous, Nataliya
Shtangey, Svetlana
Warsza, Zygmunt L.
Powiązania:
https://bibliotekanauki.pl/articles/2141854.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
exogenous variable
risk-oriented process approach
extreme value theory
tailed distribution
Opis:
Many practical tasks of data multivariate statistical analysis from the standpoint of a risk-oriented process approach (in accordance with ISO 9001: 2015, 31000: 2018) requires the definition of the risk values for the dependent exogenous variables of some processes. This paper proposes the method, which consist of original stages sequence for calculating value-at-risk (VaR) or conditional-value-at-risk (CVaR) of dependent exogenous variables, presented of the extreme data frame of critical manufacture process parameters or other parameters, for example, extreme data of environmental monitoring and etc. Risk analysis method by the extreme data of dependent exogenous variables, presented of the data matrix, uses the result of solving the formalized problem of defines the tails parameters of the joint distributions of exogenous variables as components of a bivariate random variable. It can be argued that the tails parameters of the joint distributions of dependent exogenous variables make the validated corrections of the VaR and CVaR estimates for such variables. This method expands the practical application of extreme value theory for the value at risk analysis of any dependent variables as process parameters.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 3; 44-53
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a Restricted Admissibility Compulsory Vacation Queue with Essential and Optional Services
Autorzy:
Rathinasabapathy, Kalyanaraman
V, Suvitha
Powiązania:
https://bibliotekanauki.pl/articles/747609.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Compulsory server vacation-Bernoulli process-Restricted Admissibility-Supplementary variable technique-Performance measures.
kolejkowanie, crowdsourcing(madrość tłumu), macierzowa analiza stanów ustalonych, pseudo procesy narodzin i śmierci, strumien zgłoszeń Markowa
Opis:
Odwolywanie się do madrości tlumu (crowdsourcing-u, okazjonalnych serwisów zewnetrznych) jest wykorzystywane w różnych dziedzinach. Znane są przyklady ze slużby zdrowia, informatyki, nauk o srodowisku, z biznesu oraz marketingu. Jednakze dopiero od niedawna zastosowano modele teorii kolejek na uzytek modelowania tej metody powiązania zadan. Badania te obejmuja modele kolejek  typu M/M/c,  MAP/PH/1 i MAP/PH/c.  Motywacja dla tych modeli sa uslugi, których realizacje zlecamy do pewnej grupy klientów, a nastepnie ta grupa klientów decyduje sie swiadczyc podobne uslugi dla innych grup klientów. Przykladowo, jedna grupa klientów odwiedza sklepy w celu zakupu penych towarów, podczas gdy drugi typ klientów zleca zakup tych dóbr przez Internet czy telefon i oczekuje ich dostarczenia. Wówczas obsluga sklepu stacjonarnego wykorzystuje odwiedzajacych ich klientów jako kurierów do obslugi inny grupy klientów. Nie wszyscy klienci sklepie sa gotowi, a w niektórych przypadkach jest to niemozliwe, aby pelnic role posredników dzialajacych na rzecz sklepu stacjonarnego. Wprowadzamy zatem prawdopodobienstwo tego, ze klienci jest sklonny przyjac zlecenie obslugi innych klientów. Ninieszy artykul zajmuje sie obsluga z mozliwoscia  wakacje i urlop w pracy przy modelu ovslugi MAP/PH/1 z wykorzystaniem  crowdsourcingu. Zastosowano macierzowe metody analityczne do badania systemu w stanu ustalonym. Podano przyklady numeryczne wykazujace znaczace korzysci z wprowadzenia takich wariantów w klasycznych modelach kolejkowych.
A single server queue with compulsory vacation has been considered. In addition the admission to queue is based on a Bernoulli process and also the server give two phase of essential services and an optional service. For this model the probability generating functions of number of customers in the queue for different server states are obtained using supplementary variable technique. Some performance measures are calculated. Particular models are deduced and some numerical examples are presented.
Źródło:
Mathematica Applicanda; 2016, 44, 2
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozkład prawdopodobieństwa czasu oczekiwania na zgłoszenie statku na torze wodnym Szczecin - Świnoujście
Probability Distribution of the Waiting Times for a Ship Report in the Szczecin - Świnoujście Fairway
Autorzy:
Kasyk, L.
Powiązania:
https://bibliotekanauki.pl/articles/359910.pdf
Data publikacji:
2004
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
zmienna losowa
rozkład wykładniczy
proces Poissona
EXPLO-SHIP 2004
random variable
exponential distribution
Poisson process
Opis:
Wykorzystując test "chi kwadrat" Pearsona zweryfikowano hipotezę o tym, że zmienna losowa, którą jest czas pomiędzy zgłoszeniami kolejnych jednostek płynących torem wodnym Szczecin - Świnoujście ma rozkład wykładniczy. Dane z 2002 roku analizowano w trzech zbiorach: dla dni świątecznych, okołoświątecznych i dla dni roboczych. Ponadto zweryfikowano hipotezę o rozkładzie wykładniczym czasu oczekiwania dla zgłoszeń w poszczególnych porach dnia wyróżnionych okresów.
The author has tested a hypothesis concerning the exponential distribution of the waiting times for the reporting of the next fairway vessel in the y Szczecin - Świnoujście fairway. The "chi square" Pearson test has been used. The relevant 2002 data have been examined in three sets: for weekdays, for holidays and for days immediately preceding or following holidays ("near-holidays").
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 2 (74); 205-215
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wear process in successive time units described by first order recurrences
Autorzy:
Wierzcholski, K.
Powiązania:
https://bibliotekanauki.pl/articles/244485.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
wear determination during slide bearings operating process
first order recurrence equation
class of variable coefficients
Opis:
The numerous tribology problems occurring in power-train and transport industry lead to wear bearing determination solutions. Especially the project designer demand the more and more information referring the slide bearing wear anticipation in succeeding years of machine operations. In this paper a perspective will be provided on what is known about various types of influences which are caused wear effects. Some machinery eventually fails or becomes uneconomical to operate because of single causes for example types of wear, but most mechanical devices succumb to combinations of causes. A direct parallel is seems in the human machine. Therefore this paper presents the methods of solutions of some specific class of ordinary non-homogeneous recurrence equations of first order with variable coefficients occurring in hydrodynamic theory of bearing wear problems. The various coefficients occurring in considered recurrent equations are determined from experimental measurements where the influence of various operating parameters on the wear effects is taking into account. The influence of numerous operating parameters on the wear effects is experimentally determined in the case if mentioned parameters are independent as well if are mutually connected. Moreover in this paper the theorems will be presented of the existence, determination and an algorithm construction of discrete solutions of non-homogeneous, linear, first order recurrent equations with variable coefficients. The Lemmas and Theorem are formulated and proved by means of the Unified Operator of Summation (UOS operator) with a unitary translation operator, where the operator properties and features are taking into account. In the case of the space of solution functions, the above mentioned wear problems determination are attributed to practical applications related to the non-homogeneous, linear, first order differential equations. The examples presented in this paper for various variable coefficients i.e. for various operating conditions determine the wear values of micro- bearing system during the indicated time units of operating time.
Źródło:
Journal of KONES; 2014, 21, 3; 285-292
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peano type theorem for random fuzzy initial value problem
Autorzy:
Malinowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/729255.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
Random fuzzy differential equations
random fuzzy initial value problem
fuzzy stochastic process
fuzzy random variable
Opis:
In this paper we consider the random fuzzy differential equations and show their application by an example. Under suitable conditions the Peano type theorem on existence of solutions is proved. For our purposes, a notion of ε-solution is exploited.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2011, 31, 1; 5-22
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A concept of determining the relation between load and wear of tribological systems of ship main selfignition engines by using probabilistic approach
Autorzy:
Girtler, J.
Powiązania:
https://bibliotekanauki.pl/articles/258580.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
combustion engine load
probability
stochastic process
self-ignition engine
random variable
statistical relation
stochastic relation
Opis:
This paper presents a proposal of simultaneous consideration of load and wear associated with it , of tribological systems of ship main engines (intended for ship propulsion) . Based on results of investigations it was assumed that both the load Q (i.e. a cause of wear ) and the wear Z (i.e. an effect of load occurrence) considered in a given time t (0 ≤ t ≤ tn) are random variables Qt and Zt ,respectively. There was characterized operational principle of ship main engines in definite external conditions (WZ) as well as consequences of excessive load of engines. Three hypotheses highlighting relations existing between load and wear of the above mentioned systems, have been proposed. The first of them deals with explanation of stochastic relation between load and wear, the second highlights why it is possible to assume that the load Qt and the wear Zt are positively correlated , and the third – why it is possible to assume that coefficient of correlation between Qt and Zt may be taken close to one.
Źródło:
Polish Maritime Research; 2018, 4; 130-138
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient learning variable impedance control for industrial robots
Autorzy:
Li, C.
Zhang, Z.
Xia, G.
Xie, X.
Zhu, Q.
Powiązania:
https://bibliotekanauki.pl/articles/200716.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
variable impedance control
reinforcement learning
efficient
Gaussian process
industrial robots
impedancja
poprawa efektywności
wydajność
model Gaussa
roboty przemysłowe
Opis:
Compared with the robots, humans can learn to perform various contact tasks in unstructured environments by modulating arm impedance characteristics. In this article, we consider endowing this compliant ability to the industrial robots to effectively learn to perform repetitive force-sensitive tasks. Current learning impedance control methods usually suffer from inefficiency. This paper establishes an efficient variable impedance control method. To improve the learning efficiency, we employ the probabilistic Gaussian process model as the transition dynamics of the system for internal simulation, permitting long-term inference and planning in a Bayesian manner. Then, the optimal impedance regulation strategy is searched using a model-based reinforcement learning algorithm. The effectiveness and efficiency of the proposed method are verified through force control tasks using a 6-DoFs Reinovo industrial manipulator.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 2; 201-212
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identyfikacja stanu zdatności systemu
Identification of the ability state of the system
Autorzy:
Jaźwiński, J.
Klimaszewski, S.
Powiązania:
https://bibliotekanauki.pl/articles/327676.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
identyfikacja stanu
cecha
wymaganie
zmienna losowa
proces losowy
identification of the state
characteristic
requirement
random variable
random process
Opis:
Pod pojęciem identyfikacji stanu zdatności systemu rozumiemy relacje C ∋ W (zbiór cech C zawiera się w zbiorze wymagań W). Cechy mogą być zdeterminowane - c, zmienne losowe - C, procesy losowe - C(t). Wymagania mogą być zdeterminowane - w, zmienne losowe W, procesy losowe W(t). Zbiór cech i zbiór wymagań wyznaczają dziewięć różnych relacji. W referacie omówiono wszystkie relacje, podając ich modele matematyczne oraz interpretację.
Under the notion of identification of the ability state of the system we understand the relations C ∋ W (the set of characteristics C is included in the set of requirements W). The characteristics can be determined - c, random variables - C, random processes - C(t). The requirements can be determined - w, random variables W, random processes W(t). The set of characteristics and the set of requirements determine nine different relations. All the relations have been considered in the paper as well as their mathematical models and interpretation have been given.
Źródło:
Diagnostyka; 2006, 2(38); 159-166
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Late intake valve closing as a way of the throttleless control of SI engine load
Autorzy:
Żmudka, Z.
Postrzednik, S.
Przybyła, G.
Powiązania:
https://bibliotekanauki.pl/articles/247952.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
spark-ignition engine
variable valve actuation
late intake valve closing
open Atkinson-Miller cycle
charge exchange process
cycle efficiency
Opis:
The paper tackles the problems connected with the charge exchange in internal combustion engines. The theoretical analysis of the charge exchange process in the SI engine has been presented. The realization of the charge exchange process is connected with the necessity of overcoming the flow resistances, then with the necessity of doing a work, so-called the charge exchange work. The flow resistance caused by throttling valve is especially high at the partial load running of an engine. A system with independent, late intake valve closing has been analysed. The use of the analysed system to governing of an engine load will enable to eliminate a throttling valve from inlet system and reduce the charge exchange work, especially within the range of partial load. The decrease of the charge exchange work leads to an increase of the internal and effective works, which results in an increase of the effective efficiency of the spark ignition engine. The open, theoretical Atkinson-Miller cycle has been assumed as a model of processes proceeding in the engine with variable intake valve actuation. The system has been analysed individually and comparatively with open Seiliger-Sabathe cycle, which is theoretical cycle for the classic throttle governing of engine load. Benefits resulting from application of the system with late intake valve closing have been assessed on the basis of the selected parameters: a fuel dose, a cycle work, relative charge exchange work and cycle efficiency.
Źródło:
Journal of KONES; 2012, 19, 1; 491-499
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identyfikacja potencjału operacyjnego operatora środka transportu
Transport devices operator operation potential status identification
Autorzy:
Szpytko, J.
Jaźwiński, J.
Woźniak, D.
Klimaszewski, S.
Powiązania:
https://bibliotekanauki.pl/articles/208633.pdf
Data publikacji:
2011
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
identyfikacja stanu operatora
cecha
wymaganie
zmienna losowa
proces losowy
identification of the operator state
characteristic
requirements
random variable
random process
Opis:
Pod pojęciem identyfikacji stanu zdatności operatora środków transportu rozumiemy relacje C ⊂ W (zbiór cech C zawiera się w zbiorze wymagań W). Cechy mogą być zdeterminowane - c, zmienne losowe - C, procesy losowe - C(t). Wymagania mogą być zdeterminowane - w, zmienne losowe W, procesy losowe W(t). Zbiór cech i zbiór wymagań wyznaczają dziewięć różnych relacji. W artykule omówiono możliwe relacje, podając ich modele matematyczne oraz interpretację.
Under the notion of identification of the ability state of the operator type transportation system we understand the relations C ⊂ W (the set of characteristics C is included in the set of requirements W). The characteristics can be: determined - c, random variables - C, random processes - C(t). The operation requirements of the man-device set can be: determined - w, random variables W, random processes W(t). The set of characteristics and the set of requirements determine nine different relations. All the relations have been considered in the paper, as well as their mathematical models and interpretation have been given.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2011, 60, 1; 179-194
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 24

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