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Search Results: 1 - 10 of 1317 matches for " Ansari-Piri Esmaeil "
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Superstability of Generalized Derivations
Esmaeil Ansari-Piri,Ehsan Anjidani
Journal of Inequalities and Applications , 2010, DOI: 10.1155/2010/740156
Abstract: We investigate the superstability of the functional equation f(xy)=xf(y)+g(x)y, where f and g are the mappings on Banach algebra A. We have also proved the superstability of generalized derivations associated to the linear functional equation f(γx+βy)=γf(x)+βf(y), where γ,β∈ .
Superstability of Generalized Derivations
Ansari-Piri Esmaeil,Anjidani Ehsan
Journal of Inequalities and Applications , 2010,
Abstract: We investigate the superstability of the functional equation , where and are the mappings on Banach algebra . We have also proved the superstability of generalized derivations associated to the linear functional equation , where .
Stable normed algebras
E. Ansari Piri,S. Nouri
Mathematics , 2015,
Abstract: In this paper we introduce a new property for normed algebras. This property which we call it stability, plays a key role in the studying of the theory of almost multiplier maps. In this note we study some of the basic properties of this notion and characterize stable algebras among similar algebras.
An Investigation of TV Advertisement Effects on Customers' Purchasing and their Satisfaction
Seyyed Yaser Ebrahimian Jolodar,Mohammad Esmaeil Ansari
International Journal of Marketing Studies , 2011, DOI: 10.5539/ijms.v3n4p175
Abstract: Today advertisement plays an important role in persuading customers to purchase products and services. On the other hand the expenses of advertisement in comparisons of other activities in most companies are very remarkable. Marketing studies showed that traditional advertisement strategies based on massive ads bombarding over a generic audience are not very effective and, in some cases, are at risk of being counterproductive. So, marketers and advertising companies are always looking for more effective and newer communication media and evaluation methods of advertising effectiveness. The present study attempts to examine the effects of Avishan company’s TV advertisement (As a big clothing producer company in Iran) on customers' attention to advertisement, interest for purchasing, desire for purchasing, action of purchasing and eventually customers' satisfaction in Babol city. The results show that the TV advertisement was effective in taking attention of customers, creating interest, desire and action of purchasing. Also, the study revealed that the customers were satisfied from purchasing Avishan’s products.
The Effect of CT on HRMS: Case of Automobile Industry in Iran
Mohammad Esmaeil Ansari,Ali Shaemi,Ali Atafar,Vahid Ghasemi
International Journal of Business and Management , 2012, DOI: 10.5539/ijbm.v7n2p58
Abstract: The objective of this article is to develop a model of core technology (CT) that would effect on one of the most important inter-organizational variables, the human resource management system (HRMS) in automobile industry in Iran. The statistical population consists of all automobile manufacturing plants in Iran and sample size is 4 plants. The data gathering tools consist of two questionnaires. 269 copies were distributed, only 78% responded that were analyzed in order to test the conceptual model. The structural equations modeling (SEM) and crossover regression analysis have been applied. The major question of this study referring to the effect of CT on HRMS with respect to SEM related indexes and crossover regression analysis had statistical significance when the proposed model evolved.
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
Analysis Neotectonic Activities in Khafr Basin  [PDF]
Ahmad Ansari Lari, Maryam Ansari, Soraya Ansari
Open Journal of Geology (OJG) , 2016, DOI: 10.4236/ojg.2016.66040
Abstract: As Iran is located on one of the two earthquake-prone belts in the world, and existence of faults and earthquakes is normal in Iran tableland. The main reason of earthquake is Neotectonic movements which can be effective in other natural disasters such as range movements. Due to the severe shortage of historical and seismic data and device in different parts of the world, particularly Iran, need for introducing more researchers and planners of Iran to tectonics and active tectonic areas is more visible. This study is an investigation of Neotectonic activities in Khafr basin area, Fars province. To achieve the aims of this study morphometric parameters were used. Investigations showed that severity and role of tectonic activities in different parts of the basin isdifferent, results of geomorphic and tectonic assessments indicate these differences.Stream length-gradient index (SL)on the main stream is inactive and sub streams are semi active, the ratio of the basin (BS)is 2.27, drainage basin asymmetry index (AF)is in semi active class, the ratio of width to depth of Valley (VF
Risk Factors of Lymph Edema in Breast Cancer Patients
Haghighat Shahpar,Akbari Atieh,Ansari Maryam,Homaei Shandiz Fatemeh,Najafi Massoome,Ebrahimi Mandana,Yunesian Masud,Mirzaei Hamid Reza,Akbari Mohammad Esmaeil
International Journal of Breast Cancer , 2013, DOI: 10.1155/2013/641818
Abstract: Background. Lymphedema secondary to breast cancer treatment is a common and serious problem for disease survivors. The objective of the current study was to identify the risk factors of secondary lymphedema after breast carcinoma treatment. Materials & Methods. The breast cancer patients who were followed up in three centers in Tehran and Mashhad in 2010 were recruited in the study. The circumference measurement was used for defining lymphedema. Results. Among 410 breast cancer patients, 123 cases (30%) developed lymphedema. Variables such as low educational level, body mass index (BMI), higher stage of disease, number of involved lymph nodes, comorbid diseases, trauma, infection, and the time after surgery showed significant correlation with the development of lymphedema. In logistic regression analysis, increase of 1?kg/m2 in BMI (OR?=?1.09; 95%??CI 1.05–1.15), each number increase in lymph node involvement (OR?=?1.15; 95%??CI 1.08–1.21) and the increase of every 1 month after surgery (OR?=?1.01; 95%??CI 1.01–1.02) significantly increased the risk of lymphedema. Conclusion. The results of this study demonstrated that preserving a fitted BMI, emphasis on self-care, and educating preventive activities may have important roles in decreasing the lymphedema incidence and improving the patients’ quality of life. 1. Introduction Lymphedema (LE) is an external (or internal) manifestation of lymphatic system insufficiency and impaired lymph transport [1]. It is characterized by accumulation of lymphatic fluid in the interstitial tissue that causes swelling, most often in extremities. The development of LE occurs when the lymphatic load exceeds the transport capacity. There are two general classifications of LE: primary and secondary. Primary LE develops as a consequence of a pathologic congenital and/or hereditary etiology. Secondary LE, which is more common, is caused by mechanical insufficiency of the lymphatic system due to surgery, radiation, chemotherapy, trauma, infection, tumoral blockage, chronic venous insufficiency, immobility, or tourniquet effects [2]. Upper extremity LE is one of the most common complications after breast cancer surgery with a reported incidence of 6% to 30% [3]. It is estimated that 120,000–600,000 patients suffer from postmastectomy lymphedema in the United States [4]. In a meta-analysis of 72 studies achieved by Disipio et al. in 2013, pooled estimate of lymphedema incidence was 16.6% (95% CI 13.6–20.2). It was 21.4% (14.9–29.8) when data were restricted to prospective cohort studies (30 studies) [5]. The occurrence time of
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.
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