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1
Content available The habitat suitability model for the potential distribution of Ornithodoros tholozani (Laboulbène et Mégnin, 1882) and Ornithodoros lahorensis (Neumann, 1908) (Acari: Argasidae): the main vectors of tick-borne relapsing fever in Iran
100%
Moradis-Asl E. , Jafari S.
Annals of Parasitology
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2020
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tom 66
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nr 3
2
Content available remote On rare s-precontinuity for multifunctions
100%
Ekici E. , Jafari S.
Demonstratio Mathematica
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2013
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tom Vol. 46, nr 2
395--403
EN
In this paper, we introduce and study the notions of upper and lower rarely s-precontinuous multifunctions which are a generalization of weakly s-precontinuous multifunctions due to Ekici and Park [3].
3
Content available remote On strongly semi-regular spaces
100%
Jafari S. , Noiri T.
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2001
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tom Vol. 34, nr 1
187-190
EN
The present authors [12] introduced the notion of strong semi-regularity to investigate the class of (0, s)-continuous functions. The aim of this paper is to investigate further this type of regularity.
4
Content available remote On semi δs-irresolute functions
100%
Caldas M. , Jafari S.
Fasciculi Mathematici
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2017
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tom Nr 58
47--55
EN
The concept of semi δs-irresolute function in topological spaces is introduced and studied. Some of their characteristic properties are considered. Also we investigate the relationships between these classes of functions and other classes of noncontinuous functions.
5
Content available Genetic diversity and taxonomic studies of Allium akaka and A. elburzense native to Iran using morphological characters
80%
Jafari S. , Hassandokht M. R. , Taheri M. , Kashi A.
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2017
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tom 25
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nr 1
6
Content available remote Quasi δ-β-continuous functions
80%
Rajesh N. , Caldas M. , Jafari S. , Moshokoa S. P.
Fasciculi Mathematici
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2011
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tom Nr 46
105--113
EN
The aim of this paper is to introduce and characterize a new class of functions called quasi-δ-β-continuous functions in ideal topological spaces by using δ-β-open sets.
7
Content available remote On strongly generalized pre-continuous mappings
80%
El-Maghrabi A. I. , Al-Subhi B. , Jafari S.
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tom Nr 48
23--34
EN
The aim of this paper is devoted to introduce and studya new class of generalized closed sets, namely strongly generalized preclosed sets which is weaker than both of preclosed sets and g* - closed sets (M.K. Kumar, 1999). Moreover, we investigate some properties such as strongly generalized precontinuous and strongly generalized preclosed maps via strongly generalized preclosedness.
8
Content available remote New maximal and minimal sets via βθ-open sets
80%
Caldas M. , Jafari S. , Noiri T.
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2018
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tom Nr 61
17--25
EN
Nakaoka and Oda ([9] and [10]) introduced the notion of maximal open sets and minimal closed sets. In this paper, we introduce new classes of sets called maximal βθ-open sets, minimal βθ-closed sets, βθ-semi maximal open sets and βθ-semi minimal closed sets and investigate some of their fundamental properties.
9
Content available remote On contra (…)-continuous functions and strongly (…)-closed spaces
80%
Missier S. P. , Devamanoharan C. , Caldas M. , Jafari S.
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2012
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tom Vol. 45, nr 1
187-202
EN
In [4], Dontchev introduced and investigated a new notion of continuity called contra-continuity. Recently, Jafari and Noiri ([8], [9], [10]) introduced new generalization of contra-continuity called contra-super-continuity, contra-(…)-continuity and contra-precontinuity. It is the objective of this paper to introduce and study a new class of contra-continuous functions via (…)-closed sets.
10
Content available remote More on almost contra λ-continuous functions
80%
Baker C. W. , Caldas M. , Jafari S. , Moshokoa S. P.
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tom Nr 42
17-28
EN
In 1996, Dontchev [14] introduced and investigated a new notion of non-continuity called contra-continuity. Recently, Baker et al. [6] offered a new generalization of contra-continuous functions via λ-closed sets, called almost contra λ-continuous functions. It is the objective of this paper to further study some more properties of such functions.
11
Content available remote A bitopological view of ϒ-open sets
80%
Jafari S. , Thivagar M. L. , Ponmani S. A. , Rajeswari R. R.
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tom Nr 42
53-61
EN
The aim of this paper is to introduce the ϒ -open sets in bitopological spaces and utilize them to define and characterize (i, j)ϒ -T0 spaces and a class of continuous mappings.
12
Content available remote On weakly BR-open functions and their characterizations in topological spaces
80%
Caldas M. , Ekici E. , Jafari S. , Latif R. M.
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2011
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tom Vol. 44, nr 1
159--168
EN
In this paper, we introduce and study a new class of functions by using the notions of b-θ-open sets and b-θ-closure operator called weakly BR-open functions. The connections between this function and the other existing topological functions are studied.
13
Content available remote On maps and generalized lambda alfa-sets
80%
Caldas M. , Ganster M. , Jafari S. , Navalagi G. B.
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tom Vol. 38, nr 3
729--738
EN
In this paper we introduce and study the concepts of g-lambda alfa-continuous maps, g-lambda alfa-irresolute maps and g-lambda alfa-closed maps by using generalized lambda alfa-sets and generalized Valfa-sets.
14
Content available remote δ-local function and its properties in ideal topological spaces
80%
Hatir E. , Al-Omari A. , Jafari S.
Fasciculi Mathematici
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2014
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tom Nr 53
53--64
EN
In this paper, we investigated δ-local function and its properties in ideal topological space. Moreover, the relationships other local functions such as local function [1, 3] and semi-local function [2] are investigated.
15
Content available remote On semi-g-regular and semi-g-normal spaces
80%
Ganster M. , Jafari S. , Navalagi G. B.
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2002
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tom Vol. 35, nr 2
415-421
EN
The aim of this paper is to introduce and study two new classes of spaces, called semi-g-regular and semi-g-normal spaces. Semi-g-regularity and semi-g-normality are separation properties obtained by utilizing semi-generalized closed sets. Recall that a subset A of a topological space (X, r) is called semi-generalized closed, briefly sg-closed, if the semi-closure of A C X is a subset of U C X whenever A is a subset of U and U is semi-open in (X,r).
16
Content available remote On almost weakly continuous functions
80%
Jafari S. , Noiri T.
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1998
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tom Vol. 31, nr 2
437-443
17
Content available A 4-D chaotic hyperjerk system with a hidden attractor, adaptive backstepping control and circuit design
71%
Vaidyanathan S. , Jafari S. , Pham V.-T. , Azar A. T. , Alsaadi F. E.
Archives of Control Sciences
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2018
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tom Vol. 28, No. 2
239--254
EN
A novel 4-D chaotic hyperjerk system with four quadratic nonlinearities is presented in this work. It is interesting that the hyperjerk system has no equilibrium. A chaotic attractor is said to be a hidden attractor when its basin of attraction has no intersection with small neighborhoods of equilibrium points of the system. Thus, our new non-equilibrium hyperjerk system possesses a hidden attractor. Chaos in the system has been observed in phase portraits and verified by positive Lyapunov exponents. Adaptive backstepping controller is designed for the global chaos control of the non-equilibrium hyperjerk system with a hidden attractor. An electronic circuit for realizing the non-equilibrium hyperjerk system is also introduced, which validates the theoretical chaotic model of the hyperjerk system with a hidden chaotic attractor.
18
Content available Flora diversity in burned forest areas in Dehdez, Iran
71%
Mataji A. , Daliri H. K. , Babaie S. , Jafari S. , Roshan S. A.
Folia Forestalia Polonica. Series A . Forestry
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2013
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tom 55
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nr 1
EN
Flora identified within a region plays an important role in maintaining national natural reserves. Iran is one of the most important centers of plant diversity in the Old World (22% endemic species of 8000 plant species). Dehdez burned forest area is located in the southeastern Khuzestan province. The field data were obtained from 115 sample plots in a systematic random grid (20 m × 20 m). The attributes such as tree and shrub species type, the number of species and canopy coverage were recorded. Within each sample plot small and large crown diameters were measured. In order to record herbaceous species, the Whitaker’s snail plot method was applied (100 m² minimum plot area). In this study, 240 plant species were assessed and identified to 158 genera and 42 families. Asteraceae family with 33 species, Papilionaceae with 32 species, Poaceae with 29 species, Apiaceae w ith 27 s pecies a nd Lamiaceae with 18 species prevailed and constituted 57.9% of all the plants observed. Investigation of species life forms showed that Hemicryptophyte plants were most important. Chorological study showed that species found in Irano-Turanian and Common areas of Irano-Turanian and Mediterranean eruption were the most important ecological groups in the region, while other chorotypes were positioned far from the next in importance.
19
Study on mechanical properties of sunflower seeds
71%
Jafari S. , Khazaei J. , Arabhosseini A. , Massah J. , Khoshtaghaza M. H.
Electronic Journal of Polish Agricultural Universities. Series Food Science and Technology
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2011
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tom 14
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nr 1
20
An in vitro study on the ability of tannic acid to inhibit methanogenesis and biohydrogenation of C18 PUFA in the rumen of goats
61%
Al-Jumaili W. S. , Goh Y. M. , Jafari S. , Rajion M. A. , Jahromi M. F. , Ebrahimi M.
Annals of Animal Science
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2017
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tom 17
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nr 2
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