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Search Results: 1 - 10 of 2953 matches for " Piri Hossein "
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Strong convergence theorem for amenable semigroups of nonexpansive mappings and variational inequalities
Piri Hossein,Badali Ali
Fixed Point Theory and Applications , 2011,
Abstract: In this paper, using strongly monotone and lipschitzian operator, we introduce a general iterative process for finding a common fixed point of a semigroup of nonexpansive mappings, with respect to strongly left regular sequence of means defined on an appropriate space of bounded real-valued functions of the semigroups and the set of solutions of variational inequality for β-inverse strongly monotone mapping in a real Hilbert space. Under suitable conditions, we prove the strong convergence theorem for approximating a common element of the above two sets. Mathematics Subject Classification 2000: 47H09, 47H10, 43A07, 47J25
The Effects of Pre-task, On-line, and both Pre-task and On-line Planning on Fluency, Complexity, and Accuracy – The Case of Iranian EFL Learners’ Written Production
Faramarz Piri,Hossein Barati,Saeed Ketabi
English Language Teaching , 2012, DOI: 10.5539/elt.v5n6p158
Abstract: Previous studies on the effect of planning on language production have revealed that planning does have a positive effect on language performance in terms of fluency, complexity, and accuracy. The present study was an attempt to investigate the effects of pre-task, on-line, and both pre-task and on-line planning on fluency, accuracy, and complexity of Iranian EFL learners’ written production. Forty five Iranian learners of English performed a narrative task based on a series of six pictures. The narratives, then, were coded to measure the fluency, accuracy, and complexity of the participants' production. The results of one-way ANOVA revealed that on-line planning (OLP) and pre-task plus on-line planning (PTP+OLP) had no effect on the fluency, complexity, and accuracy of the Iranian EFL learners’ written narratives. However, pre-task planning (PTP) had a significant effect on one variable of fluency (i.e. syllables per minute) but it had no effect on the complexity and accuracy of the written narratives. Findings have pedagogical implications for language teachers and syllabus designers in EFL context.
Corporate communications impact on corporate image and corporate competitiveness
Valentina Piri
Tr?i?te/Market , 2008,
Abstract: The subject of this paper is an analysis of the impact of corporate communications and of the intensity of their application on a company’s image management, and an emphasis of the role that a company’s image plays as one of the fundamental sources of its competitiveness in contemporary market conditions. Through review and analysis of theoretical contributions, the paper shows how corporate communications integrate management, organization and the marketing communication dimension at the level of the company and how, by adequate intensity of their application and an adequate degree of integration, they may have an impact on the company’s image management. The need to understand the concept of company image as a significant source of competitiveness is also stressed. For that purpose, the work includes comprehensive research of the impact of the intensity of corporate communications on the company’s image on the market of the Republic of Croatia while also researching the impact of the company’s positive image on its competitiveness. The methodology used in this work comprised a public opinion poll, carried out on a convenient sample of persons. Gathered data were analyzed using multiple regression and correlation analysis methods. Research results confirmed the impact of the intensity of corporate communications on the company’s image as well as the statement that the company’s positive image contributes to increasing its competitiveness. In that sense, it is possible to attribute to corporate communications a strategically important role for the company’s business operations within the framework of newly emerging market conditions.
The Effect of Dorsal Hippocampal α2-Adrenegic Receptors on WIN55,212-2 State-Dependent Memory of Passive Avoidance
m Piri
Qom University of Medical Sciences Journal , 2012,
Abstract: Background and Objectives: Cannabinoids are a class of psychoactive compounds that produce a wide array of effects in a large number of species. In the present study, the effects of bilateral intra-CA1 injections of an α2-adrenergic receptor agents, on WIN55,212-2 state-dependent learning were examined in adult male Wistar rats. Methods: The animals were bilaterally implanted with chronic cannulae in the CA1 regions of the dorsal hippocampus, trained in a step-down type inhibitory avoidance task, and tested 24h after training to measure step-down latency. Results: Post-training intra-CA1 injection of WIN55,212-2 (0.25 and 0.5μg/rat) induced impairment of memory retention. Amnesia produced by post-training WIN55,212-2 (0.5μg/rat) was reversed by pre-test administration of the same dose of WIN55,212-2 that is due to a state-dependent effect. Pre-test intra-CA1 injection of clonidine (0.5 and 0.75μg/rat, intra-CA1) improved post-training WIN55,212-2 (0.5μg/rat, intra-CA1)-induced retrieval impairment, while pre-test intra-CA1 injection of yohimbine (1μg/rat, intra-CA1) 2min before the administration of WIN55,212-2 (0.5μg/rat, intra-CA1) inhibited WIN55,212-2 state-dependent memory. Conclusion: These results suggest that α2-adrenergic receptors of the dorsal hippocampal CA1 regions may play an important role in Win55,212-2-induced amnesia and WIN55,212-2 state-dependent memory
Shoot organogenesis in oleaster (Elaeagnus angustifolia L.)
O Karami, K Piri
African Journal of Biotechnology , 2009,
Abstract: Efficient plant regeneration through organogenesis was achieved from callus cultures derived from leaf explants of Elaeagnus angustifolia. Calli were obtained on MS medai containing 3% sucrose and different concentrations of TDZ (0.5, 1, 2, 3, 4 and 6 mg/l). Maximum percentage response for callus formation was 85% on MS medium supplemented with 2 mg/l of TDZ. Shoot organogenesis was achieved after transfer of calli to MS media with 3% sucrose and different concentrations of BA (0.5, 1, 2, 3, 4 and 6 mg/l) and kinetin (0.5, 1, 2, 3, 4 and 6 mg/l). Maximum organogenesis was obtained with 2 mg/l of BA. Rooting of the shoots was achieved on MS supplemented with 0.2 mg/l of IBA. Regenerated plantlets were acclimatized and successfully transplanted to soil.
Mojgan Kalantary,Solmaz Piri
Iranian Journal of Radiology , 2012,
Abstract: The fetal biophysical profile score (BPS or BPP) re-fers to the sonographic assessment of four discrete biophysical variables:Fetal movementFetal toneFetal breathingAmniotic fluid volumeResult of nonstress testingEach of these five parameters is given a score of 0 or 2 points. Presence of these biophysical variables implies absence of significant central nervous system hypoxemia/acidemia at the time of testing. By comparison, a compromised fetus typically exhibits loss of acceleration of fetal heart rate, decreased body movement and breathing, hypotonia and less acutely, decreased amniotic fluid volume. Sonographic detection of signs of fetal compromise can allow appropriate intervention that will ideally prevent adverse fetal squeal.
Knowledge Management Practices in a Successful Research and Development Organization
Jasemi, Milad,Piri, Morteza
Open Journal of Knowledge Management , 2012,
Abstract: In this paper after a review on the concept and literature of knowledge management, the conceptual model of a successful knowledge management system that is currently being applied in a research and development organization is presented and discussed. The main contribution of the paper is presenting the model in its useful and practical status without becoming involved in theoretical discussions that have different shapes but similar meanings.
Book review: Kesi , T.: "Pona anje potro a a"
Sun?ana Piri Rajh
Tr?i?te/Market , 2007,
Comparison of perceived value structural models
Sun?ana Piri Rajh
Tr?i?te/Market , 2012,
Abstract: Perceived value has been considered an important determinant of consumer shopping behavior and studied as such for a long period of time. According to one research stream, perceived value is a variable determined by perceived quality and perceived sacrifice. Another research stream suggests that the perception of value is a result of the consumer risk perception. This implies the presence of two somewhat independent research streams that are integrated by a third research stream – the one suggesting that perceived value is a result of perceived quality and perceived sacrifices while perceived (performance and financial) risk mediates the relationship between perceived quality and perceived sacrifices on the one hand, and perceived value on the other. This paper describes the three approaches (models) that have been mentioned. The aim of the paper is to determine which of the observed models show the most acceptable level of fit to the empirical data. Using the survey method, research involving three product categories has been conducted on a sample of Croatian consumers. Collected data was analyzed by the structural equation modeling (SEM) method. Research has shown an appropriate level of fit of each observed model to the empirical data. However, the model measuring the effect of perceived risk on perceived value indicates the best level of fit, which implies that perceived performance risk and perceived financial risk are the best predictors of perceived value.
Strong Convergence of a Generalized Iterative Method for Semigroups of Nonexpansive Mappings in Hilbert Spaces
Husain Piri,Hamid Vaezi
Fixed Point Theory and Applications , 2010, DOI: 10.1155/2010/907275
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