[图书][B] Some models in the theory of computer viruses propagation

A Iliev, N Kyurkchiev, A Rahnev, T Terzieva - 2019 - researchgate.net
3.1 Introduction 35 3.2 Approximating cumulative number of Netsky worm variants 37 3.3
Approximating number of malicious hosts 39 3.4 Approximating cdf of content signatures for …

[图书][B] Some Families of Sigmoid Functions: Applications to Growth Theory

N Kyurkchiev, A Iliev, A Rahnev - 2019 - researchgate.net
Page 1 ! " # $ % & '(( $ ) * + , * $ + -- -- -- -- * . * / 0 . 1 +21 (0 * " 3 $ " $ $ " + 4 1 ( 5 0 * 3 $ 677 89
1 1 . ! / 2 * Page 2 1 Nikolay Kyurkchiev, Anton Iliev and Asen Rahnev SOME FAMILIES OF …

[PDF][PDF] Selected Topics in Mathematical Modeling: Some New Trends

N Kyurkchiev - … to Academician Blagovest Sendov (1932-2020) …, 2020 - researchgate.net
1.1 Introduction 12 1.2 Preliminaries 13 1.3 Main Results 14 1.3. 1 Approximating the” real
wealth data” 18 1.3. 2 Approximating the” growth data (mean height) of sunflower plants” 18 …

[图书][B] Extension of Gompertz-type Equation in Modern Science: 240 Anniversary of the birth of B. Gompertz

N Kyurkchiev, A Iliev - 2018 - researchgate.net
Untitled Page 1 Page 2 1 Nikolay Kyurkchiev, Anton Iliev EXTENSION OF GOMPERTZ-TYPE
EQUATION IN MODERN SCIENCE. 240 Anniversary of the birth of B. Gompertz 2018 Page 3 …

[图书][B] A Look at the New Logistic Models with" Polynomial Variable Transfer"

N Kyurkchiev, A Iliev, A Rahnev - 2020 - researchgate.net
4.1 The Pham's model 67 4.2 The Pham's model with” polynomial variable transfer” 68 4.3
Modified Logistic model with” polynomial variable transfer” 71 4.4 Truncated Cauchy power …

[图书][B] Some New Logistic Differential Models: Properties and Applications

V Kyurkchiev, A Iliev, A Rahnev, N Kyurkchiev - 2019 - researchgate.net
Some New Logistic Differential Models Page 1 Vesselin Kyurkchiev Anton Iliev Asen Rahnev
Nikolay Kyurkchiev Some New Logistic Differential Models Properties and Applications In this …

[PDF][PDF] Some intrinsic properties of adaptive functions to piecewise smooth data

N Kyurkchiev - 2021 - researchgate.net
Untitled Page 1 Page 2 1 Nikolay Kyurkchiev SOME INTRINSIC PROPERTIES OF
ADAPTIVE FUNCTIONS TO PIECEWISE SMOOTH DATA 2021 Page 3 2 . Scientific …

[PDF][PDF] On a sigmoidal growth function generated by reaction networks. Some extensions and applications

N Kyurkchiev - Communications in Applied Analysis, 2019 - researchgate.net
In [2] S. Markov considered the possibility of approximating the input function s (t) in the
differential model y′(t)= ky (t) s (t); y (t0)= y0 with the Bateman [3] type correction. In the …

Soil water and salinity dynamics under the improved drip-irrigation scheduling for ecological restoration in the saline area of Yellow River basin

S Dong, G Wang, Y Kang, Q Ma, S Wan - Agricultural Water Management, 2022 - Elsevier
The drip-irrigation scheduled by different soil matric potential (SMP) thresholds at different
stages according to soil water and salt management purposes was usually adopted for …

Some properties of the Blumberg's hyper-log-logistic curve

R Anguelov, N Kyurkchiev, S Markov - Biomath, 2018 - biomath.math.bas.bg
The paper considers the sigmoid function definedthrough the hyper-log-logistic model
introduced by Blumberg. We study the Hausdorff distance of this sigmoid to the Heaviside …