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Wyszukujesz frazę "smoothness" wg kryterium: Temat


Tytuł:
The influence of technological parameters process burnishing on the reduce roughness steel shaft
Autorzy:
Dyl, T.
Nikonowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/246902.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
burnishing
reduce roughness
smoothness processing
Opis:
The processing is burnishing one from the methods of processing finishing off the metals, depending on utilization the local plastic deformation, produced in top layer of object as a result of definite, meeting co-operation hard the and smooth tool from worked surface. The plastic deformations are called out by arrangement of strengths causing the superficial crossing the value of tension pressures of the making plastic material worked. Set them on cold causing except moving the unevenness also the cold work in top layer of worked object. The effect of moving ("flowing") the unevenness of surface, as a result of influence on worked surface smooth the and hard tool, it is the decrease of roughness of surface worked, however the effect the cold work - the principal change of property of top layer object. Phenomena these, though they step out the most often simultaneously, can have different intensity, according from demanded main effect of processing. It can be with main aim of applying processing the burnishing in technology of machines: the smoothness processing - the definite decrease the height not the equality of surface after previous processing burnishing; the strengthening processing - the producing of definite changes of physical properties of material in top layer of object, causing immunizing him on working such exploational factors how fatigue, abrasive waste, corrosion and different; the processing the dimensional - smoothness - the definite enlargement the dimension exactitude from simultaneous decrease to required value the roughness of surface. The determination of influence of technological parameters process burnishing on quality of surface of rolls from stainless and unalloyed steel is the aim of work.
Źródło:
Journal of KONES; 2010, 17, 2; 97-102
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maximal functions and smoothness spaces in $L_{p}(ℝ^{d})
Autorzy:
Kyriazis, G. C.
Powiązania:
https://bibliotekanauki.pl/articles/1218547.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
maximal functions
approximation by operators
wavelets
smoothness spaces
Opis:
We study smoothness spaces generated by maximal functions related to the local approximation errors of integral operators. It turns out that in certain cases these smoothness classes coincide with the spaces $C^α_p(ℝ^d)$, 0 < p≤∞, introduced by DeVore and Sharpley [DS] by means of the so-called sharp maximal functions of Calderón and Scott. As an application we characterize the $C^α_p(ℝ^d)$ spaces in terms of the coefficients of wavelet decompositions.
Źródło:
Studia Mathematica; 1998, 128, 3; 219-241
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The methods of quality assessment of the tracked suspensions of the combat vehicles
Autorzy:
Rybak, P.
Hryciów, Z.
Michałowski, B.
Wiśniewski, A.
Wojciechowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/243485.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
tracked combat vehicle
suspension
driving smoothness
test track
Opis:
The extortions that result in the vibrations of a hull of the combat vehicle have an impact on the tracked combat vehicle during the off-road driving. They may have a negative impact on the crew, internal equipment, shooting accuracy. A level of the hull loads depends on quality of the suspension system, which main responsibility consists in minimising an amplitude of the vibrations. Therefore, it is necessary both to improve a structure of the suspension system, and its components, as well as their optimisation. The tests of the driving smoothness of the vehicle and quality of the suspension elements can be realised both within a frame of the model tests and while driving in the real conditions. The assessment criteria of the driving smoothness are directly related to the negative influence of the vibrations to the human body. The suspension quality should be assumed both upon an execution of the vehicle prototype, and during the design or modernisation phase. It results both in reducing the time, and minimisation of the costs and risk related to the structure development. The model tests enable to evaluate the driving smoothness and comfort prior to an execution of the prototype. The tests on the test tracks in the final phase of the development are carried out in order to evaluate the driving smoothness.
Źródło:
Journal of KONES; 2018, 25, 4; 471-478
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The problem of determining traffic volume in a restricted traffic area
Problem wyznaczania wielkości ruchu w ograniczonej przestrzeni ruchowej
Autorzy:
Skorupski, J.
Powiązania:
https://bibliotekanauki.pl/articles/359263.pdf
Data publikacji:
2010
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
bezpieczeństwo ruchu
płynność ruchu
traffic safety
traffic smoothness
Opis:
One of the most common problems in the process of traffic management is the determination of the proper traffic volume. On the one hand there is a tendency of increasing traffic volume - it brings profits to all subjects involved in the transportation process. On the other hand there is a tendency to decrease traffic volume – it assures better safety. It is necessary to solve the problem of finding a compromise between those tendencies. Solving this problem is possible, based on developed methods of safety dimensioning that use the concept of traffic smoothness for quantitative evaluation of traffic safety level. In the paper the concept of those methods is explained. Besides, presented are results of simulation research on the relation between traffic smoothness and the safety level in a restricted control sector. Although the paper presents the implementation (examples) of the problem in the air traffic management, similar procedures and methods may be applied to the marine traffic.
Jednym z najważniejszych problemów w procesie zarządzania ruchem jest kwestia wyznaczenia właściwego natężenia ruchu. Z jednej strony pojawia się tendencja do zwiększania ruchu - daje to korzyści (zyski) wszystkim podmiotom biorącym udział w procesie transportowym. Z drugiej jednak strony pojawia się dążenie do zmniejszenia ruchu – co zapewnia większe bezpieczeństwo. Konieczne jest więc rozwiązanie problemu wyznaczenia kompromisowej wielkości ruchu. Możliwe staje się to w oparciu o opracowanie metod wymiarowania bezpieczeństwa, bazujących na pojęciu płynności ruchu, dlatego możliwe jest liczbowe wyrażenie poziomu bezpieczeństwa. W artykule przedstawiono koncepcję tych metod oraz wyniki symulacyjnego badania zależności płynności i poziomu bezpieczeństwa w ograniczonym sektorze kontroli. Podano implementację przykładu w zarządzaniu ruchem lotniczym, ale podobne procedury i metody mogą być używane także w ruchu morskim.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2010, 21 (93); 77-82
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation by bivariate Mazhar-Totik operators
Autorzy:
Wachnicki, Eugeniusz
Powiązania:
https://bibliotekanauki.pl/articles/746253.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
positive linear operator
rate of convergence
Voronovskaya theorem
modulus of continuity
modulus of smoothness
mixed modulus of smoothness
limit problem
Opis:
The aim of this paper is to study a bivariate version of the operator investigated in [2], [4]. We shall present Voronovskaya type theorem and theorems giving a rate of convergence of this operator. Some applications for the limit problem are indicated.
Źródło:
Commentationes Mathematicae; 2010, 50, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dini continuity of the first derivatives of generalized solutions to the Dirichlet problem for linear elliptic second order equations in nonsmooth domains
Autorzy:
Borsuk, Mikhail
Powiązania:
https://bibliotekanauki.pl/articles/1294311.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
elliptic equations
nonsmooth domains
Dini continuous
smoothness of generalized solutions
Opis:
We consider generalized solutions to the Dirichlet problem for linear elliptic second order equations in a domain bounded by a Dini-Lyapunov surface and containing a conical point. For such solutions we derive Dini estimates for the first order generalized derivatives.
Źródło:
Annales Polonici Mathematici; 1998, 69, 2; 129-154
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation by Durrmeyer-type operators
Autorzy:
Gupta, Vijay
Srivastava, G.
Powiązania:
https://bibliotekanauki.pl/articles/1311057.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
modulus of smoothness
global direct theorem
differential and integral operators
Opis:
We define a new kind of Durrmeyer-type summation-integral operators and study a global direct theorem for these operators in terms of the Ditzian-Totik modulus of smoothness.
Źródło:
Annales Polonici Mathematici; 1996, 64, 2; 153-159
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of the nonlinear dynamics of a smooth and discontinuous oscillator with different smoothness parameters and initial values
Autorzy:
Chang, Yujian
Chen, Enli
Feng, Ming
Powiązania:
https://bibliotekanauki.pl/articles/281961.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
SD oscillator
experimental system
nonlinear dynamic characteristic
initial value sensitivity
smoothness parameters
Opis:
The dynamic response of a nonlinear system is very sensitive to initial conditions. Both the irrational nonlinearity and the large displacement of a smooth and discontinuous (SD) oscillator have been studied in this paper. An experimental study has been conducted on a model of the SD oscillator with different initial conditions and smoothness parameters. Experimental results indicate that tiny variation in the initial displacement will lead to different kinds of vibrations, and the system exhibits a wide range of nonlinear dynamical phenomena with the change of smoothness parameters. All experimental results are in good conformity with numerical simulation results.
Źródło:
Journal of Theoretical and Applied Mechanics; 2019, 57, 4; 935-946
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A tool orientation smoothing method for five-axis machining to avoid singularity problems
Autorzy:
Cui, Chuanhui
Zhu, Zhengqing
Chen, Shuai
Zheng, Qiang
Chai, Jinfeng
Li, Xiancai
Powiązania:
https://bibliotekanauki.pl/articles/2200873.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
aeroengine blade
smoothness of tool orientation
five-axis machine tool
singular area
Opis:
In numerically controlled grinding of aeroengine blades, a sharp change in a rotating shaft caused by a singular zone greatly reduces grinding precision and quality. This paper proposes an algorithm to optimize the tool-path that combines optimization of the C-axis rotation angle, a modification to the tool orientation and adjustments to the tool position by taking a four-array machine tool with two rotational axes (B-axis and C-axis) as an example. The algorithm was verified using VERICUT software, furthermore, in machining experiments, the rotation amplitudes of the rotary axis in singular areas was effectively reduced, which ensured grinding quality of blades.
Źródło:
Journal of Theoretical and Applied Mechanics; 2023, 61, 1; 89--102
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The generalized sine function and geometrical properties of normed spaces
Autorzy:
Szostok, T.
Powiązania:
https://bibliotekanauki.pl/articles/255087.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
geometry of normed spaces
smoothness
strict convexity
Birkhoff-James orthogonality
conditional functional equations
Opis:
Let [formula] be a nornied space. We deal here with a function s : X x X —> R given by the formula [formula] (for x = 0 we must define it separately). Then we take two unit vectors x and y such that y is orthogonal to x in the Birkhoff-James sense. Using these vectors we construct new functions Φx,y which are defined on R. If X is an inner product space, then Φx, y = sin and, therefore, one may call this function a generalization of the sine function. We show that the properties of this function are connected with geometrical properties of the normed space X.
Źródło:
Opuscula Mathematica; 2015, 35, 1; 117-126
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the means of experimental determination of dynamic loading of the rolling stock
Sovershenstvovanie sredstv ehksperimentalnogo opredelenija dinamicheskojj nagruzhennosti khodovykh chastejj podvizhnogo sostava
Autorzy:
Domin, R.
Mostovych, A.
Kolomiiets, A.
Powiązania:
https://bibliotekanauki.pl/articles/792590.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
control test
technical diagnostics
railway rolling stock
experimental determination
dynamic loading
smoothness motion
locomotive
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heuristic Procedure for the Assembly Line Balancing Problem With Postural Load Smoothness
Autorzy:
Jaturanonda, C.
Nanthavanij, S.
Das, S. K.
Powiązania:
https://bibliotekanauki.pl/articles/90459.pdf
Data publikacji:
2013
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
assembly line balancing
postural load smoothness
upper extremities disorders
RULA
linia montażowa
obciążenie
kończyny górne
Opis:
This paper presents a heuristic procedure for assigning assembly tasks to workstations where both productivity and ergonomics issues are considered concurrently. The procedure uses Kilbridge and Wester’s algorithm to obtain an initial task–workstation assignment solution which minimizes the balance delay of an assembly line. A task reassignment algorithm was applied to improve the initial solution by exchanging assembly tasks, which smooth postural load among workers, between workstations. A composite index of variation was used to measure the effectiveness of the task–workstation assignment solution. On the basis of clothes assembling, it was found that the task–workstation assignment solution with a minimum composite index of variation can be obtained with relatively equal weights in balance delay and postural load.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2013, 19, 4; 531-541
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The union of uniform closed balls conjecture
Autorzy:
Nour, C.
Stern, R. J.
Takche, J.
Powiązania:
https://bibliotekanauki.pl/articles/970775.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
proximal smoothness
interior and exterior sphere conditions
union of uniform closed balls property
wedged set
nonsmooth analysis
Opis:
The exterior sphere condition is compared to proximal smoothness, and examples are provided, which show that the two properties are not necessarily equivalent. Then conditions are given under which equivalence holds, and an open question involving the union of uniform closed balls property is stated in the form of a conjecture.
Źródło:
Control and Cybernetics; 2009, 38, 4B; 1525-1534
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some stability results for asymptotic norming properties of Banach spaces
Autorzy:
Basu, Sudeshna
Rao, T.
Powiązania:
https://bibliotekanauki.pl/articles/966021.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
$c_0$- and $l_1$-direct sum of Banach spaces
$w^*$-Asymptotic Norming Property
Hahn-Banach smoothness
Źródło:
Colloquium Mathematicum; 1998, 75, 2; 271-284
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristic of monotonicity of Orlicz function spaces equipped with the Orlicz norm
Autorzy:
Foralewski, Paweł
Hudzik, Henryk
Kaczmarek, Radosław
Krbec, Miroslav
Powiązania:
https://bibliotekanauki.pl/articles/746439.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Orlicz space
Orlicz norm
Kothe space
Kothe dual
characteristic of monotonicity
strict monotonicity
point of order smoothness
Opis:
We first prove that the property of strict monotonicity of a~K\"othe space \((E,\|.\|_E)\) and\slash or of its K\"othe dual \((E',\|.\|_{E'})\) can be used successfully to compare the supports of \(x\in E\backslash\{\theta\}\) and \(y\in S(E')\), where \(=\|x\|_E\). Next we prove that any element \(x\in S_{+}(E)\) with \(\mu(T\backslash\operatorname{supp} x)=0\) is a~point of order smoothness in \(E\), whenever \(E\) is an order continuous K\"othe space. Finally, we present formulas for the characteristic of monotonicity of Orlicz function spaces endowed with the Orlicz norm in the case when the generating Orlicz function does not satisfy suitable \(\Delta_2\)-condition or the measure is non-atomic infinite, and some lower and upper estimates for the characteristic of monotonicity of this spaces when the measure is non-atomic and finite.
Źródło:
Commentationes Mathematicae; 2013, 53, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł

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