Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Jensen’s inequality for GG-convex functions
1
7
EN
Gholamreza
Zabandan
0000 0002 0282 6362
Department of Mathematics, Faculty of Mathematical Sciences and Computer, Kharazmi University, Tehran, Iran
zabandan@khu.ac.ir
10.22075/ijnaa.2017.11330.1555
In this paper, we obtain Jensen’s inequality for GG-convex functions. Also, we get inequalities alike to Hermite-Hadamard inequality for GG-convex functions. Some examples are given.
Jensen’s inequality,GG-convex,Integral inequality
https://ijnaa.semnan.ac.ir/article_3725.html
https://ijnaa.semnan.ac.ir/article_3725_6495b5167432572a458ef98bec36e414.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Analysis of disassembled executable codes by abstract interpretation
9
13
EN
Mohammad hadi
Alaeiyan
Iran University of Science and Technology, Narmak, Tehran, 16844, Iran
hadi_alaeiyan@comp.iust.ac.ir
10.22075/ijnaa.2019.4048
The aim of this paper is to define the abstract domain, abstract operator, abstract semantic, the environments and states of disassembled executable codes as well as a way to analysis the disassembled executable codes. Nowadays, static analysis on disassembled code going to grow. Reverse engineering and malware analysis use this technique. Thus, we tried to perform pluralization the requirements of static analysis by abstract interpretation as well as report some specific and advantageous notes in this paper. In addition, we present an algorithm to obtain the control ow graph of disassembled code.
Static analysis,Abstract domain,Abstract operator,Abstract semantic,Environment and state of abstract interpretation
https://ijnaa.semnan.ac.ir/article_4048.html
https://ijnaa.semnan.ac.ir/article_4048_2f0bf098430d4aac72901e31b2747c69.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Optimally Local Dense Conditions for the Existence of Solutions for Vector Equilibrium Problems
15
26
EN
Sirous
Moradi
Arak University
sirousmoradi@gmail.com
Maryam
Shokouhnia
Department of Mathematics, Faculty of Science, Arak University, Arak, Iran
shokoohniam63@yahoo.com
Somaye
Jafari
Department of Mathematics, Arak University, Arak, Iran
s.jafari.math@gmail.com
10.22075/ijnaa.2019.16783.1893
In this paper, by using C-sequentially sign property for bifunctions, we provide sufficient conditions that ensure the existence of solutions of some vector equilibrium problems in Hausdorff topological vector spaces which ordered by a cone. The conditions which we consider are not imposed on the whole domain of the operators involved, but just on a locally segment-dense subset of the domain.
locally segment-dense set,vector equilibrium problem,C-sequentially sign property
https://ijnaa.semnan.ac.ir/article_3549.html
https://ijnaa.semnan.ac.ir/article_3549_600ab53f65a28aea0c8c5b5f237a6de8.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Entropy of infinite systems and transformations
27
33
EN
Massoud
Amini
0000-0002-9253-5859
Department of Mathematics
Tarbiat Modares University
Tehran, Iran
mamini@modares.ac.ir
10.22075/ijnaa.2019.17400.1931
The Kolmogorov-Sinai entropy is a far reaching dynamical generalization of Shannon entropy of information systems. This entropy works perfectly for probability measure preserving (p.m.p.) transformations. However, it is not useful when there is no finite invariant measure. There are certain successful extensions of the notion of entropy to infinite measure spaces, or transformations with infinite invariant measures. The three main extensions are Parry, Krengel, and Poisson entropies. In this survey, we shortly overview the history of entropy, discuss the pioneering notions of Shannon and later contributions of Kolmogorov and Sinai, and discuss in somewhat more details the extensions to infinite systems. We compare and contrast these entropies with each other and with the entropy on finite systems.
Infinite invariant measure,Kolmogorov-Sinai entropy,Parry entropy,Krengel entropy,Poisson entropy,Pinsker factor
https://ijnaa.semnan.ac.ir/article_4050.html
https://ijnaa.semnan.ac.ir/article_4050_8ffa4224508e953e9acfb96439027198.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Solving a nonlinear inverse system of Burgers equations
35
54
EN
Hamed
Zeidabadi
School of Mathematics and Computer Science, Damghan University, P.O.Box 36715-364, Damghan, Iran.
h.zeidabadi@std.du.ac.ir
Reza
Pourgholi
School of Mathematics and Computer Science, Damghan University, P.O.Box 36715-364, Damghan, Iran.
pourgholi@du.ac.ir
Seyyed Hashem
Tabasi
School of mathematics and computer sienceses, Damghan University, Semnan, Iran.
tabasi@du.ac.ir
10.22075/ijnaa.2019.11008.1537
By applying finite difference formula to time discretization and the cubic B-splines for spatial variable, a numerical method for solving the inverse system of Burgers equations is presented. Also, the convergence analysis and stability for this problem are investigated and the order of convergence is obtained. By using two test problems, the accuracy of presented method is verified. Additionally, obtained numerical results of the cubic B-spline method are compared to trigonometric cubic B-spline method, exponential cubic B-spline method and radial basis function method. Implementation simplicity and less computational cost are the main advantages of proposed scheme compared to previous proposals.
System of Burgers equations,Cubic B-spline,Collocation method,Inverse problems,Convergence analysis,Stability analysis,Tikhonov regularization method,Ill-posed problems,Noisy data
https://ijnaa.semnan.ac.ir/article_4051.html
https://ijnaa.semnan.ac.ir/article_4051_fa12b05921b7c3b29c6bbf2534ee5565.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Completely Continuous Banach Algebras
55
62
EN
Bahman
Hayati
Faculty of Mathematical Sciences, Malayer University, P. O. Box 16846-13114, Malayer, Iran
hayati@malayeru.ac.ir
10.22075/ijnaa.2019.1184.1268
For a Banach algebra $mathfrak{A}$, we introduce ~$c.c(mathfrak{A})$, the set of all $phiin mathfrak{A}^*$ such that $theta_phi:mathfrak{A}to mathfrak{A}^*$ is a completely continuous operator, where $theta_phi$ is defined by $theta_phi(a)=acdotphi$ for all $ain mathfrak{A}$. We call $mathfrak{A}$, a completely continuous Banach algebra if $c.c(mathfrak{A})=mathfrak{A}^*$. We give some examples of completely continuous Banach algebras and a sufficient condition for an open problem raised for the first time by J.E Gale, T.J. Ransford and M. C. White: Is there exist an infinite-dimensional amenable Banach algebra whose underlying Banach space is reflexive? We prove that a reflexive, amenable, completely continuous Banach algebra with the approximation property is trivial.
Amenability,Completely continuous,Banach algebra
https://ijnaa.semnan.ac.ir/article_4052.html
https://ijnaa.semnan.ac.ir/article_4052_98d6bd83d5d5695668206e7b12bb7f92.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Solvability of infinite system of nonlinear singular integral equations in the $C(Itimes I, c)$ space and modified semi-analytic method to find a closed-form of solution
63
76
EN
Anupam
Das
Department of Mathematics, Rajiv Gandhi University, Rono Hills, Doimukh-791112, Arunachal Pradesh, India
anupam.das@di.ku.dk
Mohsen
Rabbani
0000-0003-3602-6125
Department of Mathematics, Sari Branch, Islamic Azad University, Sari, Iran
mrabbani@iausari.ac.ir
Bipan
Hazarika
0000-0002-0644-0600
Department of Mathematics, Rajiv Gandhi University, Rono Hills, Doimukh-791112, Arunachal Pradesh, India
bh_rgu@yahoo.co.in
Reza
Arab
Department of Mathematics, Sari Branch, Islamic Azad University, Sari, Iran
mathreza.arab@gmail.com
10.22075/ijnaa.2019.16525.1875
In this article, we discuss about solvability of infinite systems of singular integral equations with two variables in the Banach sequence space $C(I times I, c)$ by applying measure of noncompactness and Meir-Keeler condensing operators. By presenting an example, we have illustrated our results. For validity of the results we introduce a modified semi-analytic method in the case of two variables to make an iteration algorithm to find a closed-form of solution for the above problem. The numerical results show that the produced sequence for approximating the solution of example is in the $c$ space with a high accuracy.
Measure of noncompactness,Infinite systems of singular integral equations,Meir-Keeler condensing operators,Fixed point theorem,Modified homotopy perturbation
https://ijnaa.semnan.ac.ir/article_4053.html
https://ijnaa.semnan.ac.ir/article_4053_f0d83ce21ced64ebc87901f2504b2f55.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Coupled fixed point theorems for rational type contractions via C-class functions
77
98
EN
Arslan
Hojat Ansari
Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran
analsisamirmath2@gmail.com
Bahman
Moeini
Department of Mathematics, Hidaj Branch, Islamic Azad University, Hidaj, Iran
moeini145523@gmail.com
Isa
Yildirim
0000-0001-6165-716X
Department of Mathematics, Faculty of Science, Ataturk University, 25240 Erzurum,
Turkey
isayildirim@atauni.edu.tr
Anca
Maria Oprea
Babe s-Bolyai University, Faculty of Mathematics and Computer Sciences, 400084 Cluj-Napoca, Romania
anca.oprea@math.ubbcluj.ro
10.22075/ijnaa.2018.11820.1591
In this paper, by using C-class functions, we will present a coupled fixed problem in b-metric space for the single-valued operators satisfying a generalized contraction condition. The first part of the paper is related to some fixed point theorems, the second part presents the uniqueness and existence of the solution of the coupled fixed point problem and in the third part, we discuss data dependence, well-posedness, Ulam-Hyers stability and limit shadowing property of the coupled fixed point set.
Fixed point,ordered metric space,rational type contraction,Coupled fixed point,data dependence,well-posedness,Ulam-Hyers stability,limit shadowing property
https://ijnaa.semnan.ac.ir/article_4054.html
https://ijnaa.semnan.ac.ir/article_4054_283349094c7b0d3ea2014e1c94994c7b.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Nash Equilibrium Strategy for Bi-matrix Games with L-R Fuzzy Payoffs
99
109
EN
Fatemeh
Madandar
Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran
fatemeh.madandar@kiau.ac.ir
Somayeh
Haghayeghi
Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran
s.haghayeghi@kiau.ac.ir
S.Mansour
Vaezpour
null
Department of Mathematics and Computer Sciences, Amirkabir University of Technology, Tehran, Iran
vaez@aut.ac.ir
10.22075/ijnaa.2018.13073.1674
In this paper, bi-matrix games are investigated based on L-R fuzzy variables. Also, based on the fuzzy max order several models in non-symmetrical L-R fuzzy environment is constructed and the existence condition of Nash equilibrium strategies of the fuzzy bi-matrix games is proposed. At last, based on the Nash equilibrium of crisp parametric bi-matrix games, we obtain the Pareto and weak Pareto Nash equilibrium strategies of the fuzzy bi-matrix games.
Bi-matrix game,Nash equilibrium,L-R fuzzy variable
https://ijnaa.semnan.ac.ir/article_4055.html
https://ijnaa.semnan.ac.ir/article_4055_8ed4b87793f9dc8aa68d20d0f30da122.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Fixed point theorems for new J-type mappings in modular spaces
111
118
EN
Esmaiel
Feizi
0000-0002-0159-7799
Mathematics Department, Bu-Ali Sina University, P.O. Box 65174-4161, Hamadan, Iran
efeizi1@gmail.com
Zahra
Hossseini
Mathematics Department, Bu-Ali Sina University, P.O. Box 65174-4161, Hamadan, Iran
z.hoseini@basu.ac.ir
10.22075/ijnaa.2019.1816.1475
In this paper, we introduce $rho$-altering $J$-type mappings in modular spaces. We prove some fixed point theorems for $rho$-altering and $rho$-altering $J$-type mappings in modular spaces. We also furnish illustrative examples to express relationship between these mappings. As a consequence, the results are applied to the existence of solution of an integral equation arising from an ODE system.
Modular space,$rho$-Altering mapping,$rho$-Asymptotically regular mapping,$rho$-$J$-type mapping,$rho$-altering $J$-type mapping,Integral equation
https://ijnaa.semnan.ac.ir/article_4056.html
https://ijnaa.semnan.ac.ir/article_4056_3d32ca72a3d313a00aa8b96543758683.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Periodic Wave Shock solutions of Burgers equations
119
129
EN
Saida
Bendaas
Department of Mathematics, Faculty of Sciences, Ferhat Abbas University, Campus El-bez, Setif - 19000, Algeria
saida_bendaas@yahoo.fr
Noureddine
Alaa
Department of Mathematics, Faculty of Science and Technics, University of Marrakesh, Morocco
n.alaa@uca.ac.ma
10.22075/ijnaa.2018.10791.1524
In this paper we investigate the exact peroidic wave shock solutions of the Burgers equations. Our purpose is to describe the asymptotic behavior of the solution in the cauchy problem for viscid equation with small parametr ε and to discuss in particular the case of periodic wave shock. We show that the solution of this problem approaches the shock type solution for the cauchy problem of the inviscid burgers equation. The results are formulated in classical mathematics and proved with infinitesimal techniques of non standard analysis.
Non Standard Analysis,Boundary Problem,Viscid Burgers Equation,Inviscid Burgers Equation,Heat Equation. Peroidic wave shock
https://ijnaa.semnan.ac.ir/article_4057.html
https://ijnaa.semnan.ac.ir/article_4057_49e099cb1ae39d820ee91104b59d3f1a.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
On soft ultrafilters
131
138
EN
Alireza
Bagheri Salec
Department of Mathematics, Faculty of Basic Sciences, University of Qom, Qom, Iran
alireza_bagheri_salec@yahoo.com
10.22075/ijnaa.2017.12670.1645
In this paper, the concept of soft ultrafilters is introduced and some of the related structures such as soft Stone-Cech compactification, principal soft ultrafilters and basis for its topology are studied.
Stone-Cech compactification,ultrafilter,soft set
https://ijnaa.semnan.ac.ir/article_4058.html
https://ijnaa.semnan.ac.ir/article_4058_8b868059554bccbd18e97696b2d76efb.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Hermitian solutions to the system of operator equations $T_iX=U_i$
139
152
EN
S.Mansour
Vaezpour
null
Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
vaez@aut.ac.ir
Zahra
Bakhtiari
Department of Mathematics, Payame Nour University, Tehran, Iran
za_bakhtiari@yahoo.com
10.22075/ijnaa.2017.1475.1378
In this article, we consider the system of operator equations $T_iX=U_i$ for $i=1,2,...,n$ and give necessary and sufficient conditions for the existence of common Hermitian solutions to this system of operator equations for arbitrary operators without the closedness condition. Also, we study the Moore-Penrose inverse of a $ntimes 1$ block operator matrix and then give the general form of common Hermitian solutions to this system of equations. Consequently, we give the necessary and sufficient conditions for the existence of common Hermitian solutions to the system of an operator equation and also present the necessary conditions for the solvability of the equation $sum_{i=1}{n}T_iX_i=U$.
Operator equation,Hermitian solution,Common solution,Existence of solution,Moore penrose inverse
https://ijnaa.semnan.ac.ir/article_4059.html
https://ijnaa.semnan.ac.ir/article_4059_01638be695de3fa1c98b915e397bc3bf.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Adaptive fuzzy sliding mode and indirect radial-basis-function neural network controller for trajectory tracking control of a car-like robot
153
166
EN
Masoud
Shirzadeh
Dept. of Electrical Engineering,
Amirkabir University of Technology,
Tehran 15875-4413, Iran
masoud_shirzad@aut.ac.ir
Abdollah
Amirkhani
Dept. of Automotive Engineering,
Iran University of Science and Technology,
Tehran 16846-13114, Iran
amirkhani@iust.ac.ir
Mohammad H.
Shojaeefard
Department of Automotive Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
Hamid
Behroozi
Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
10.22075/ijnaa.2019.4060
The ever-growing use of various vehicles for transportation, on the one hand, and the statistics of soaring road accidents resulting from human error, on the other hand, reminds us of the necessity to conduct more extensive research on the design, manufacturing and control of driver-less intelligent vehicles. For the automatic control of an autonomous vehicle, we need its dynamic model, which, due to the existing uncertainties, the unmodeled dynamics and the performed simplifications, is impossible to determine exactly. Add to this, the external disturbances that exist on the movement path. In this paper, two adaptive controllers have been proposed for tracking the trajectory of a car-like robot. The first controller includes an indirect radial-basis-function neural network whose parameters are updated online via gradient descent. The second controller is adaptively updated online by means of fuzzy logic. The proposed controller includes a nonlinear robust section that uses the sliding mode method and a fuzzy logic section that updates some of the nonlinear control parameters online. The fuzzy logic system has been designed to deal with the chattering problem in the controller of a car-like robot. In both controllers, the parameters have been determined by means of genetic algorithm. The obtained results indicate that even with the consideration of un-ideal effects such as uncertainties and external disturbances, the proposed controller has been able to perform successfully.
dynamic model,trajectory tracking,car-like robot,sliding mode,fuzzy logic system
https://ijnaa.semnan.ac.ir/article_4060.html
https://ijnaa.semnan.ac.ir/article_4060_9007e962e4554f3cf3f646d18bb437b3.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Home appliances energy management based on the IoT system
167
175
EN
Heliasadat
Hosseinian
Faculty of Mechanics, Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
helia.hosseinian@aut.ac.ir
Hamidreza
Damghani
Faculty of Mechanics, Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
hamidreza.damghani@gmail.com
Leila
Damghani
Faculty of Computer Engineering- Artificial intelligence, Kharazmi University, Tehran, Iran
Golnoosh
Nezam
Faculty of architecture engineering, West Tehran Branch, Islamic Azad University, Tehran, Iran
golnooshnezam@gmail.com
Hediyehsadat
Hosseinian
Faculty of architecture engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
hediyehsadat.hosseinian@gmail.com
10.22075/ijnaa.2019.4061
The idea of the Internet of Things (IoT) has turned out to be increasingly prominent in the cutting edge period of innovation than at any other time. From little family unit gadgets to extensive modern machines, the vision of IoT has made it conceivable to interface the gadgets with the physical world around them. This expanding prominence has likewise made the IoT gadgets and applications in the focal point of consideration among aggressors. Officially, a few sorts of pernicious exercises exist that endeavor to bargain the security and protection of the IoT gadgets. One fascinating rising risk vector is the assaults that misuse the utilization of sensors on IoT gadgets. IoT gadgets are powerless against sensor-based dangers because of the absence of legitimate security estimations accessible to control the utilization of sensors by applications. By abusing the sensors (e.g., accelerometer, gyrator, mouthpiece, light sensor, and so on) on an IoT gadget, assailants can separate data from the gadget, exchange malware to a gadget, or trigger a pernicious movement to bargain the gadget. In this review, we investigate different dangers focusing on IoT gadgets and talk about how their sensors can be mishandled for malignant purposes. Specifically, we present an itemized study about existing sensor-based dangers to IoT gadgets and countermeasures that are grown specifically to verify the sensors of IoT gadgets. Besides, we talk about the security and protection issues of IoT gadgets with regards to sensor-based dangers and finish up with future research headings.
Energy management,Internet of Things (IoT),Intelligent Systems,Smart home,Home Appliances,Energy consumption
https://ijnaa.semnan.ac.ir/article_4061.html
https://ijnaa.semnan.ac.ir/article_4061_c66440845bb97a5c5bca37dc920cfd2f.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
A new SDN-based framework for wireless local area networks
177
183
EN
Ahmad
Jalili
Faculty of Computer Engineering, Gonbad Kavous University, Gonbad Kavous, Iran
jalili@gonbad.ac.ir
10.22075/ijnaa.2019.4062
Nowadays wireless networks are becoming important in personal and public communication and growing very rapidly. Similarly, Software Defined Network (SDN) is an emerging approach to overcome challenges of traditional networks. In this paper, a new SDN-based framework is proposed to fine-grained control of 802.11 Wireless LANs. This work describes the benefits of programmable Access Points. The proposed framework is evaluated on a prototype. We show that this architecture allows us to react to application needs, adjust network configuration for a priority application, detect network problems, and improve the user experience of the network. Our architecture relies on the IEEE 802.11 standard, and exploits it to collect information from the stations.
Software Defined Networks,Wireless Networks,Control Plane,Wireless LANs,Data Plane
https://ijnaa.semnan.ac.ir/article_4062.html
https://ijnaa.semnan.ac.ir/article_4062_12f38bf23e016238db2c83ac2297d059.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
A Novel Approach for Detecting Relationships in Social Networks Using Cellular Automata Based Graph Coloring
185
192
EN
M.
Kashani
Department of Electrical Engineering and Information Technology Iranian Research Organization for Science and
Technology (IROST), Tehran, Iran
m.kashani@irost.ir
S.V.
Shojaedini
Department of Electrical Engineering and Information Technology Iranian Research Organization for Science and
Technology (IROST), Tehran, Iran
S.
Gorgin
Department of Electrical Engineering and Information Technology Iranian Research Organization for Science and
Technology (IROST), Tehran, Iran
10.22075/ijnaa.2019.4063
All the social networks can be modeled as a graph, where each roles as vertex and each relation roles as an edge. The graph can be show as $G = [V;E]$, where $V$ is the set of vertices and $E$ is the set of edges. All social networks can be segmented to $K$ groups, where there are members in each group with same features. In each group each person knows other individuals and is in touch with them. In this study, the main goal is introducing a new approach for detecting these groups and minimizing the number of these groups using a cellular automat algorithm. There are two types of social networks, containing simulated social network and real social network. The results show that the introduced method has a great potential to significantly reduce the number of colors assigned and running time of the program.
Social networks,Graph coloring,Cellular automata
https://ijnaa.semnan.ac.ir/article_4063.html
https://ijnaa.semnan.ac.ir/article_4063_17f403a51f166a173016427ef4cb1f31.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Cystoscopy Image Classification Using Deep Convolutional Neural Networks
193
215
EN
Seyyed Mohammad Reza
Hashemi
Faculty of Computer Engineering and IT, Shahrood University of Technology, Shahrood, Iran
smr.hashemi@shahroodut.ac.ir
Hamid
Hassanpour
Faculty of Computer Engineering and IT, Shahrood University of Technology, Shahrood, Iran
h.hassanpour@shahroodut.ac.ir
Ehsan
Kozegar
University of Guilan, Guilan, Iran
kozegar@guilan.ac.ir
Tao
Tan
Eindhoven University of Technology, Eindhoven, The Netherlands
t.tan1@tue.nl
10.22075/ijnaa.2019.4064
In the past three decades, the use of smart methods in medical diagnostic systems has attracted the attention of many researchers. However, no smart activity has been provided in the field of medical image processing for diagnosis of bladder cancer through cystoscopy images despite the high prevalence in the world. In this paper, two well-known convolutional neural networks (CNNs) and a multilayer neural network was applied to classify bladder cystoscopy images. One of the most important issues in training phase of neural networks is determining the learning rate because selecting too small or large learning rate leads to slow convergence, volatility and divergence, respectively. Therefore, an algorithm is required to dynamically change the convergence rate. In this respect, an adaptive method was presented for determining the learning rate so that the multilayer neural network could be improved. In this method, the learning rate is determined using a coefficient based on the difference between the accuracy of training and validation according to the output error. In addition, the rate of changes is updated according to the level of weight changes and output error. The proposed method was evaluated on 720 bladder cystoscopy images in four classes of blood in urine, benign and malignant masses. Based on the simulated results, the second proposed method (CNNs) achieved at least 17% decrease in error and increased the convergence speed of the proposed method in the classification of cystoscopy images, compared to the other competing methods.
Cystoscopy Images,Medical Image Classication,MLP Neural Network,Adaptive Learning Rate,CNNs
https://ijnaa.semnan.ac.ir/article_4064.html
https://ijnaa.semnan.ac.ir/article_4064_1ae5421a208b9f8020134d448f2ce28c.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Real-time Prediction and Synchronization of Business Process Instances using Data and Control Perspective
217
228
EN
Iman
Firouzian
Faculty of Computer and IT,
Shahrood University of Technology, Shahrood, Iran
iman.firouzian@gmail.com
Morteza
Zahedi
Faculty of Computer and IT,
Shahrood University of Technology, Shahrood, Iran
Hamid
Hassanpour
Faculty of Computer Engineering and IT, Shahrood University of Technology, Shahrood, Iran
h.hassanpour@shahroodut.ac.ir
10.22075/ijnaa.2019.4065
Nowadays, in a competitive and dynamic environment of businesses, organizations need to monitor, analyze and improve business processes with the use of Business Process Management Systems (BPMSs). Management, prediction and time control of events in BPMS is one of the major challenges of this area of research that has attracted lots of researchers. In this paper, we present a 4-phase pipeline approach to the problem of synchronizing each pair of dependent process instances to arrive at the corresponding pair of tasks simultaneous or near-simultaneous. In the first phase, the process model is mined from the event log and enriched by the probabilistic distributions of time information. In the second phase, the hidden processing dependency between the each pair of dependent process instances is formally defined and is mined from the event log. In the third phase, a process state prediction algorithm is presented to predict the future route of process instance and then predict the remaining time of the process instance to a given point in a predicted route of the business process. In the fourth phase, an iterative synchronization algorithm is presented based on the presented process state prediction algorithm to make each pair of dependent process instances arrive at the corresponding pair of tasks simultaneous or near-simultaneous. Experimental results on a real-life event log of BPI challenge 2012 show that the proposed method leads to 39% reduction in cycle time for dependent process instances.
Business Process,Synchronization,Cycle Time Prediction,Dependent Process Instances
https://ijnaa.semnan.ac.ir/article_4065.html
https://ijnaa.semnan.ac.ir/article_4065_618bebc09d64eb0b627624c37dceb9af.pdf
Semnan University
International Journal of Nonlinear Analysis and Applications
2008-6822
10
1
2019
11
01
Natural scene text localization using edge color signature
229
237
EN
Jalil
Ghavidel
Faculty of Computer Engineering, Shahrood University of Technology, Shahrood, Iran
jalil_ghavidel@shahroodut.ac.ir
Alireza
Ahmadyfard
Faculty of Electrical and Robotic Engineering, Shahrood University of Technology, Shahrood, Iran
ahmadyfard@shahroodut.ac.ir
Morteza
Zahedi
Faculty of Computer Engineering, Shahrood University of Technology, Shahrood, Iran
10.22075/ijnaa.2019.4066
Localizing text regions in images taken from natural scenes is one of the challenging problems due to variations in font, size, color and orientation of text. In this paper, we introduce a new concept so called Edge Color Signature for localizing text regions in an image. This method is able to localize both Farsi and English texts. In the proposed method first a pyramid using different scales of the input image is created. Then for each level of the pyramid an edge map is extracted. Afterwards, several geometric features are employed to filter out the non-text edges from the extracted edges. At this stage we describe an edge using colors of its neighboring pixels. We use the mean-Shift algorithm to obtain the color modes surrounding each edge pixel. Subsequently, the connected edge pixels with similar color signatures are clustered using Single-Linkage clustering algorithm to construct meaningful groups. Finally, each of the clusters is labeled as text or non-text using an MLP based cascade classifier. The proposed method has been evaluated on well-known ICDAR 2013 and our Farsi dataset, the result is very promising.
Text localization,Natural scene images,Edge color signature,Clustering,Farsi language
https://ijnaa.semnan.ac.ir/article_4066.html
https://ijnaa.semnan.ac.ir/article_4066_8532277f2c7c0711482667b2f116a1dd.pdf