2015
10
1
0
169
Integrating Goal Programming, Taylor Series, Kuhn-Tucker Conditions, and Penalty Function Approaches to Solve Linear Fractional Bi-level Programming Problems
2
2
In this paper, we integrate goal programming (GP), Taylor Series, Kuhn-Tucker conditions and Penalty Function approaches to solve linear fractional bi-level programming (LFBLP)problems. As we know, the Taylor Series is having the property of transforming fractional functions to a polynomial. In the present article by Taylor Series we obtain polynomial objective functions which are equivalent to fractional objective functions. Then on using the Kuhn-Tucker optimality condition of the lower level problem, we transform the linear bilevel programming problem into a corresponding single level programming. The complementary and slackness
condition of the lower level problem is appended to the upper level objective with a penalty, that can be reduce to a single objective function. In the other words,
suitable transformations can be applied to formulate FBLP problems. Finally a numerical example is given to illustrate the complexity of the procedure to the solution.
1
10
M.
Saraj
M.
Saraj
msaraj@scu.ac.ir
N.
Safaei
N.
Safaei
n_safaei@ymail.com
Bi-level programming
Fractional programming
Taylor Series
Kuhn-Tucker conditions
Goal programming
Penalty function.
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Optimal Linear Codes Over GF(7) and GF(11) with Dimension 3
2
2
Let $n_q(k,d)$ denote the smallest value of $n$ for which there exists a linear $[n,k,d]$-code over the Galois field $GF(q)$. An $[n,k,d]$-code whose length is equal to $n_q(k,d)$ is called {em optimal}. In this paper we present some matrix generators for the family of optimal $[n,3,d]$ codes over $GF(7)$ and $GF(11)$. Most of our given codes in $GF(7)$ are non-isomorphic with the codes presented before. Our given codes in $GF(11)$ are all new.
11
22
M.
Emami
M.
Emami
Univ. of Zanjan
mojgan.emami@yahoo.com
L.
pedram
L.
pedram
Univ. of Zanjan
leilapedram@yahoo.com
Linear codes
Optimal codes
Griesmer bound.
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OD-characterization of Almost Simple Groups Related to displaystyle D4(4)
2
2
Let $G$ be a finite group and $pi_{e}(G)$ be the set of orders of all elements in $G$. The set $pi_{e}(G)$ determines the prime
graph (or Grunberg-Kegel graph) $Gamma(G)$ whose vertex set is $pi(G)$, the set of primes dividing the order of $G$, and two
vertices $p$ and $q$ are adjacent if and only if $pqinpi_{e}(G)$. The degree $deg(p)$ of a vertex $pin pi(G)$, is the number of edges incident on $p$. Let
$pi(G)={p_{1},p_{2},...,p_{k}}$ with $p_{1}<p_{2}<...<p_{k}$. We define $D(G):=(deg(p_{1}),deg(p_{2}),...,deg(p_{k}))$, which is
called the degree pattern of $G$. The group $G$ is called $k$-fold OD-characterizable if there exist exactly $k$ non-isomorphic groups $M$ satisfying conditions $|G|=|M|$ and $D(G)=D(M)$. Usually a 1-fold OD-characterizable group is simply called OD-characterizable. In this paper, we classify all finite groups with the same order and degree pattern as an almost simple groups related to $D_{4}(4)$.
23
43
G. R.
Rezaeezadeh
G. R.
Rezaeezadeh
university of shahrekord
rezaeezadeh@sci.sku.ac.ir
M. R.
Darafsheh
M. R.
Darafsheh
university of tehran
darafsheh@ut.ac.ir
M.
Bibak
M.
Bibak
university of shahrekord
m.bibak62@gmail.com
M.
Sajadi
M.
Sajadi
university of shahrekord
sajadi−mas@yahoo.com
Degree pattern
$k$-fold OD-characterizable
Almost simple group.
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Associated Graphs of Modules Over Commutative Rings
2
2
Let $R$ be a commutative ring with identity and let $M$ be an $R$-module. In this paper we introduce a new graph associated to modules over commutative rings. We study the relationship between the algebraic properties of modules and their associated graphs. A topological characterization for the completeness of the special subgraphs is presented. Also modules whose associated graph is complete, tree or complete bipartite are studied and several characterizations are given.
45
58
A.
Abbasi
A.
Abbasi
Uni. Guilan
aabbasi@guilan.ac.ir
H.
Roshan-Shekalgourabi
H.
Roshan-Shekalgourabi
Uni. Guilan
hroshan@guilan.ac.ir
D.
Hassanzadeh-Lelekaami
D.
Hassanzadeh-Lelekaami
Uni. Guilan
dhmath@guilan.ac.ir
Associated Graph of module
Prime spectrum
Connected graph
Diameter.
[## ##]
Filters and the Weakly Almost Periodic Compactification of a Semitopological Semigroup
2
2
Let $S$ be a semitopological semigroup. The $wap-$ compactification of semigroup S, is a compact
semitopological semigroup with certain universal properties relative to the original semigroup, and
the $Lmc-$ compactification of semigroup $S$ is a universal semigroup compactification of $S$,
which are denoted by $S^{wap}$ and $S^{Lmc}$ respectively. In this paper, an internal construction of the
$wap-$compactification of a semitopological semigroup is constructed as a space of $z-$filters. Also we
obtain the cardinality of $S^{wap}$ and show that if $S^{wap}$ is the one point compactification then
$(S^{Lmc}-S)*S^{Lmc}$ is dense in $S^{Lmc}-S$.
59
80
M.
Akbari Tootkaboni
M.
Akbari Tootkaboni
akbari@shahed.ac.ir
Semigroup compactification
$Lmc$-compactification
$wap$-compactification
$z$-filter.
[## ##]
Gravitational Search Algorithm to Solve the K-of-N Lifetime Problem in Two-Tiered WSNs
2
2
Wireless Sensor Networks (WSNs) are networks of autonomous nodes used for monitoring an environment. In designing WSNs, one of the main issues is limited energy source for each sensor node. Hence, offering ways to optimize energy consumption in WSNs which eventually increases the network lifetime is strongly felt. Gravitational Search Algorithm (GSA) is a novel stochastic population-based meta-heuristic that has been successfully designed for solving continuous optimization problems. GSA has a flexible and well-balanced mechanism to enhance intensification (intensively explore areas of the search space with high quality solutions) and diversification (move to unexplored areas of the search space when necessary) abilities. In this paper, we will propose a GSA-based method for near-optimal positioning of Base Station (BS) in heterogeneous two-tiered WSNs, where Application Nodes (ANs) may own different data transmission rates, initial energies and parameter values. Here, we treat with the problem of positioning of BS in heterogeneous two-tiered WSNs as a continuous optimization problem and show that proposed GSA can locates the BS node in an appropriate near-optimal position of heterogeneous WSNs. From the experimental results, it can be easily concluded that the proposed approach finds the better location when compared to the PSO algorithm and the exhaustive search.
81
93
M.
Kuchaki Rafsanjani
M.
Kuchaki Rafsanjani
marjankuchaki@yahoo.com
M. B.
Dowlatshahi
M. B.
Dowlatshahi
H.
Nezamabadi-Pour
H.
Nezamabadi-Pour
Wireless sensor network (WSN)
Two-tiered WSNs
Base station location
Energy consumption
Network lifetime
Gravitational search algorithm (GSA).
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Distance-Balanced Closure of Some Graphs
2
2
In this paper we prove that any distance-balanced graph $G$ with $Delta(G)geq |V(G)|-3$ is regular.
Also we define notion of distance-balanced closure of a graph and we find distance-balanced closures of trees $T$ with
$Delta(T)geq |V(T)|-3$.
95
102
N.
Ghareghani
N.
Ghareghani
ghareghani@ut.ac.ir
B.
Manoochehrian
B.
Manoochehrian
behzad@khayam.ut.ac.ir
M.
Mohammad-Noori
M.
Mohammad-Noori
morteza@ipm.ir
Distances in graphs
Distance-balanced graphs
Distance-balanced closure.
[## ##]
($phi,rho$)-Representation of $Gamma$-So-Rings
2
2
A $Gamma$-so-ring is a structure possessing a natural partial ordering,
an infinitary partial addition and a ternary multiplication, subject to a set of axioms.
The partial functions under disjoint-domain sums and functional composition is a $Gamma$-so-ring.
In this paper we introduce the notions of subdirect product and $(phi,rho)$-product of $Gamma$-so-rings
and study $(phi,rho)$-representation of $Gamma$-so-rings.
103
119
M.
Siva Mala
M.
Siva Mala
Assistant Professor
sivamala_aug9@yahoo.co.in
K.
Siva Prasad
K.
Siva Prasad
Assistant Professor
siva235prasad@yahoo.co.in
Subdirectly irreducible $Gamma$-so-ring
Subdirect product
$(phi
rho)$-product of $Gamma_i$-so-rings
$(phi
rho)$-representation of a $Gamma$-so-ring.
[## ##]
On Barycentric-Magic Graphs
2
2
Let $A$ be an abelian group. A graph $G=(V,E)$ is said to be $A$-barycentric-magic if there exists a labeling $l:E(G)longrightarrow Asetminuslbrace{0}rbrace$ such that the induced vertex set labeling $l^{+}:V(G)longrightarrow A$ defined by $l^{+}(v)=sum_{uvin E(G)}l(uv)$ is a constant map and also satisfies that $l^{+}(v)=deg(v)l(u_{v}v)$ for all $v in V$, and for some vertex $u_{v}$ adjacent to $v$. In this paper we determine all $hinmathbb{N}$ for which a given graph G is $mathbb{Z}_{h}$-barycentric-magic and characterize $mathbb{Z}_{h}$-barycentric-magic labeling for some graphs containing vertices of degree 2 and 3.
121
129
M. T.
Varela
M. T.
Varela
mtvarela@usb.ve
Magic graph
Barycentric sequences
Barycentric magic graph.
[## ##]
On the 2-absorbing Submodules
2
2
Let $R$ be a commutative ring and $M$ be an $R$-module. In this
paper, we investigate some properties of 2-absorbing submodules of
$M$. It is shown that $N$ is a 2-absorbing submodule of $M$ if
and only if whenever $IJLsubseteq N$ for some ideals $I,J$ of R
and a submodule $L$ of $M$, then $ILsubseteq N$ or $JLsubseteq
N$ or $IJsubseteq N:_RM$. Also, if $N$ is a 2-absorbing submodule
of $M$ and $M/N$ is Noetherian, then a chain of 2-absorbing
submodules of $M$ is constructed. Furthermore, the annihilation of
$E(R/frak p)$ is studied whenever $0$ is a 2-absorbing submodule
of $E(R/frak p)$, where $frak p$ is a prime ideal of $R$ and
$E(R/frak p)$ is an injective envelope of $R/frak p$.
131
137
Sh.
Payrovi
Sh.
Payrovi
Imam Khomeini International University
shpayrovi@sci.ikiu.ac.ir
S.
Babaei
S.
Babaei
sbabaei@edu.ikiu.ac.ir
2-absorbing ideal
2-absorbing submodule
A chain of 2-absorbing submodule.
[## ##]
On Tensor Product of Graphs, Girth and Triangles
2
2
The purpose of this paper is to obtain a necessary and sufficient condition for the tensor product of two or more graphs to be connected, bipartite or eulerian. Also, we present a characterization of the duplicate graph $G 1 K_2$ to be unicyclic. Finally, the girth and the formula for computing the number of triangles in the tensor product of graphs are worked out.
139
147
H. P.
Patil
H. P.
Patil
Pondicherry University
hpppondy@gmail.com
V.
Raja
V.
Raja
Pondicherru university
vraja.math@gmail.com
Tensor product
Bipartite graph
Connected graph
Eulerian graph
Girth
Cycle
Path.
[## ##]
Epi-Cesaro Convergence
2
2
Since the turn of the century there have been several notions of convergence for subsets of metric spaces appear in the
literature. Appearing in as a subset of these notions is the concepts of epi-convergence. In this paper we peresent definitions of epi-Cesaro convergence for sequences of lower semicontinuous functions from $X$ to $[-infty,infty]$ and Kuratowski Cesaro convergence of sequences of sets. Also we characterize the connection between epi-Cesaro convergence of sequences of functions and Kuratowski Cesaro convergence of their epigarphs.
149
155
F.
Nuray
F.
Nuray
Afyon Kocatepe University
fnuray@aku.edu.tr
R. F.
Patterson
R. F.
Patterson
University of North Florida
rpatters@unf.edu
Cesaro convergence
Epi-convergence
Epi-Cesaro convergence
Lower semicontinuous function.
[## ##]
ABSTRACTS IN PERSIAN - Vol. 10, No. 1
2
2
Please see the full text contains the Pesian abstracts for this volume.
157
169
Name of Authors
in This Volume
Name of Authors
in This Volume
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