Browsing by Subject "delay"

Now showing 1 - 8 of 8

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Blok funkcjonalny regulowanego opóźnienia sygnału oparty na układzie pary różnicowej
(Data obrony: 2018-03-12) Radko, Artur
Wydział Informatyki, Elektroniki i Telekomunikacji
Access status: Open Access ,
Existence and uniqueness of anti-periodic solutions for a class of nonlinear n-th order functional differential equations
(2011) Liu, Ling; Li, Yongkun
In this paper, we use the method of coincide degree theory to establish new results on the existence and uniqueness of anti-periodic solutions for a class of nonlinear n-th order functional differential equations of the form $x^{(n)}(t)=F(t, x_t, x^{(n-1)}_t, x(t), x^{(n-1)}(t), x(t-\tau(t)), x^{(n-1)}(t-\sigma(t))).$
Access status: Open Access ,
On fractional random differential equations with delay
(2016) Ho, Vu; Nguyen, Ngoc Phung; Nguyen, Phuong
In this paper, we consider the existence and uniqueness of solutions of the fractional random differential equations with delay. Moreover, some kind of boundedness of the solution is proven. Finally, the applicability of the theoretical results is illustrated with some real world examples.
Access status: Open Access ,
Oscillatory criteria via linearization of half-linear second order delay differential equations
(Wydawnictwa AGH, 2020) Baculíková, Blanka; Džurina, Jozef
In the paper, we study oscillation of the half-linear second order delay differential equations of the form $\left(r(t)(y'(t))^{\alpha}\right)'+p(t)y^{\alpha}(\tau(t))=0.$ We introduce new monotonic properties of its nonoscillatory solutions and use them for linearization of considered equation which leads to new oscillatory criteria. The presented results essentially improve existing ones.
Access status: Open Access ,
Oscillatory results for second-order noncanonical delay differential equations
(Wydawnictwa AGH, 2019) Džurina, Jozef; Jadlovská, Irena; Stavroulakis, Ioannis P.
The main purpose of this paper is to improve recent oscillation results for the second-order half-linear delay differential equation $\left(r(t)\left(y'(t)\right)^\gamma\right)'+q(t)y^\gamma(\tau(t))= 0, \quad t\geq t_0,$ under the condition $\int_{t_0}^{\infty}\frac{\text{d} t}{r^{1/\gamma}(t)} \lt \infty.$ Our approach is essentially based on establishing sharper estimates for positive solutions of the studied equation than those used in known works. Two examples illustrating the results are given.
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Quality of service in wireless access for vehicular networks (WAVE)
(Data obrony: 2016-07-13) Okehie, Chima
Wydział Informatyki, Elektroniki i Telekomunikacji
Access status: Open Access ,
Representation of solutions of linear discrete systems with constant coefficients and with delays
(Wydawnictwa AGH, 2025) Diblík, Josef
The paper surveys the results achieved in representing solutions of linear non-homogeneous discrete systems with constant coefficients and with delays and their fractional variants by using special matrices called discrete delayed-type matrices. These are used to express solutions of initial problems in a closed and often simple form. Then, results are briefly discussed achieved by such representations of solutions in stability, controllability and other fields. In addition, a similar topic is dealt with concerning linear non-homogeneous differential equations with delays and their variants. Moreover, some comments are given to this parallel direction pointing some important moments in the developing this theory. An outline of future perspectives in this direction is discussed as well.
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Wyznaczanie opóźnień metodą korelacji dla rejestracji sejsmoakustycznych
(Data obrony: 2012-11-21) Wolak, Mateusz
Wydział Geologii, Geofizyki i Ochrony Środowiska
The primary threats occurring in mines are the shocks. With zoning, we can determine the direction or place in which such a phenomenon took place. The purpose of this work was to create an application that allows do appoint on which geophone signal appeared earliest, and the difference in time begining of acoustic emission given in milliseconds between the earliest path and those on which the signal was recorded with a delay. The work compares the effectiveness of correlation for calculating the delay, depending on the variation of the input variable. Work has been completed the presentation of the results compared to the measurement carried out by the operator and reaching final conclusions. As the environment for the implementation of this task choosed language Java.