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Search Results: 1 - 10 of 348 matches for " Zohreh Siavoshi "
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Reading Performance and Academic Achievement in Early Childhood Bilingual and Monolinguals  [PDF]
Abootaleb Seadatee-Shamir, Zohreh Siavoshi
Open Journal of Applied Sciences (OJAppS) , 2014, DOI: 10.4236/ojapps.2014.46031
Abstract: Relationship between reading performance and academic achievement is theoretically predictable. However, this relationship could be higher among early childhood bilingual (ECBL) students than monolingual peers. For evaluating this claim, two groups of randomly selected female second graders (150 Farsi speaking and 150 Farsi and Turkish speaking) were tested and compared on these characteristics. The measures used were Kormi-Nouri and associates’ tests of reading performance. Moreover, academic achievement was defined to be the average of scores obtained by students at their final school exams in Math, Science and Farsi. Analysis of regression was then performed to determine which construct served as the best predictor of academic achievement in both groups. Based on the results, ECBL girls were superior to their monolingual (ML) counterparts in all three areas. Findings also show that reading performance was a strong predictor of school achievement for both groups.
Failure of a granular step
Saloome Siavoshi,Arshad Kudrolli
Physics , 2005, DOI: 10.1103/PhysRevE.71.051302
Abstract: We investigate the gravity driven rapid failure of a granular step composed of non-cohesive steel beads. The step is initially held together with electromagnets, and released when the current is switched off. We visualize the surface and the motion of the grains during the entire relaxation. The initial failure occurs at the surface and the subsequent flow is also confined to the surface as the step relaxes to its final state. The final shape of the surface is almost linear, depends on the initial angle of the step, and is not sensitive to the size of the grains. The average final slope of the pile is only slightly lower than the angle of repose of a pile formed by slowly pouring particles on to a flat surface. The evolution of the step is compared with a proposed convective-diffusion model of our system. The qualitative features of the relaxation are captured by the model after a flow-dependent dissipation parameter is introduced.
Evidence-Based Management: An Overview  [PDF]
Zohreh Sohrabi, Nazila Zarghi
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.616180
Abstract: Evidence-based management is not a new idea. It has developed several years ago, however, it continued through the movement of evidence-based practice following emerging well-known definition of David Sackett from evidence-based medicine. As other professionals, the movement of evidence-based practice, as well as its application in real setting faces to many challenges. This study aimed to address Evidence-based management definition, principles and its challenges for applying in real settings and the possible solutions to overcome the barriers.
$λ$-perfect maps
M. Namdari,M. A. Siavoshi
Mathematics , 2015,
Abstract: The $\lambda$-perfect maps, a generalization of perfect maps (continuous closed maps with compact fibers) are presented. Using $P_\lambda$-spaces and the concept of $\lambda$-compactness some results regarding $\lambda$-perfect maps will be investigated.
Effect of pretreatment with Ethanol or Ammonium Hydroxide on Helicobacter Pylori colonization in the stomach of rats
Fahimi F,Siavoshi F,Ala S
Acta Medica Iranica , 2002,
Abstract: Animal models for H.pylori infection have been developed to clarify the pathogenesis, testing new therapies and developing vaccines against human H.pylori infection. Although rats have been used extensively for gastric ulceration and acid secretion studies, the animal is not normally infected with H.pylori.Several chemicals such as ethanol and ammonium hydroxide can induce gastric erosion and interact with gastric mucosal defense mechanisms. The aim of the present study was to investigate the effects of pretreatment with the gastroinvasive agents on colonization of H. pylori with the gastroinvasive agents on colonization of H. pylori in not germ-free rats in order to overcome the resistance against H. pylori in rats. After 24 h fasting, the rats were divided into three major groups. Animals in the first group were not pretreated with any chemicals. The two other groups were pretreated with ethanol (60%) or ammonium hydroxide (1%) before inoculation of 1 mL H. pylori suspension (3×108 cfu/ml). The results showed that H. pylori could not colonize in rats, even with ethanol or ammonium hydroxide pretreatment. An understanding of the mechanism of this resistance can help researchers to develop new therapeutic or preventive drugs against H. pylori and it is recommended to perform more investigation to clarify the reason of this resistance
Friction of a slider on a granular layer: Non-monotonic thickness dependence and effect of boundary conditions
Saloome Siavoshi,Ashish V. Orpe,Arshad Kudrolli
Physics , 2005, DOI: 10.1103/PhysRevE.73.010301
Abstract: We investigate the effective friction encountered by a mass sliding on a granular layer as a function of bed thickness and boundary roughness conditions. The observed friction has minima for a small number of layers before it increases and saturates to a value which depends on the roughness of the sliding surface. We use an index-matched interstitial liquid to probe the internal motion of the grains with fluorescence imaging in a regime where the liquid has no significant effect on the measured friction. The shear profiles obtained as a function of depth show decrease in slip near the sliding surface as the layer thickness is increased. We propose that the friction depends on the degree of grain confinement relative to the sliding surfaces.
Facilitating Reading Comprehension among Engineering Students: Acquiring Successful Strategies
Zohreh Ziyaeeimehr
Studies in Literature and Language , 2012, DOI: 10.3968/2253
Abstract: The present study aimed at finding out the effect of two different methods of reading instruction, namely, the traditional grammar translation method and reading comprehension strategies on improving the reading comprehension of Iranian engineering students. The participants included 40 male and female Iranian university students majoring in chemistry that randomly divided into two groups of experimental and control. The participants in the experimental group were taught their textbooks focusing on reading comprehension strategies, while the participants in the control group were exposed to the conventionally-used grammar-translation method. Having run 10 sessions of instruction, the performances of the two groups were compared with each other by an independent-samples t-test to find possible differences between the two groups. The findings were indicative of the effective role of reading comprehension strategies on the reading comprehension of Iranian university students. Key words: ESP; Reading Comprehension Strategies; English for Engineering Students
Hepatitis C Virus Cryoglobulinemia and Non-Hodgkin Lymphoma
Zohreh Jadali
Hepatitis Monthly , 2012,
Abstract: Context: On the strength of epidemiological data,biological studies, and clinical findings, hepatitis C virus appears to be involved in the pathogenesis of a proportion of patients with non-Hodgkin lymphoma and cryoglobulinemia.Objectives: The aim of this paper is to review the published literature focused on the current knowledge concerning hepatitis C virus and its potential role in the production of non-Hodgkin lymphoma and cryoglobulinemia in susceptible individuals.Evidence Acquisition: In this review, databases such as pubMed, embase, ISI, and Iranian databases including Iranmedex, and SID were searched.Results: The results of this review indicate that HCV infection may be a likely cause of various B cell dysregulation disorders such as non-Hodgkin lymphoma and cryoglobulinemia.Conclusion: Based on current findings, it has been hypothesized that NHL and cryoglobulinemia in HCV infection may have an immune-mediated pathogenesis. In HCV infected patients, we showed an elevated risk of these two diseases. These finding suggested a possible role for chronic hepatitis C in the pathogenesis of NHL and cryoglobulinemia.
Application of Delphi method for determining the affecting factors upon audit risk model
Zohreh Hajiha
Management Science Letters , 2012,
Abstract: The assessment of risks in an audit work could directly influence the costs, timing, and strategies as well as audit quality. The purpose of this paper is to identify the critical affecting factors on risks proposed in Audit Risk Model (ARM), in Iranian audit environment of Iran. In the present, the Delphi Method consists of 60 audit partners and managers is employed. The panel consists of two equally divided groups, one from audit organization, a governmental organization, and the other from private audit firms. We employ two rounds of Delphi and 58 critical risk factors extracted from auditing literature and Iranian auditing standards and present them to the experts. There are 43 factors categorized as important factors to assess the risks in ARM. The results are considerable in an Iranian audit environment, findings show the most important factors are in inherent risk factors. Finally, we made a comparison with a similar study in Taiwan. Differences indicate that in professional judgment issues like risk assessment, the consideration of particular culture and environment could help enhance the precision of assessments, especially in assessing control risk factors.
Fuzzy audit risk modeling algorithm
Zohreh Hajihaa
Management Science Letters , 2011,
Abstract: Fuzzy logic has created suitable mathematics for making decisions in uncertain environments including professional judgments. One of the situations is to assess auditee risks. During recent years, risk based audit (RBA) has been regarded as one of the main tools to fight against fraud. The main issue in RBA is to determine the overall audit risk an auditor accepts, which impact the efficiency of an audit. The primary objective of this research is to redesign the audit risk model (ARM) proposed by auditing standards. The proposed model of this paper uses fuzzy inference systems (FIS) based on the judgments of audit experts. The implementation of proposed fuzzy technique uses triangular fuzzy numbers to express the inputs and Mamdani method along with center of gravity are incorporated for defuzzification. The proposed model uses three FISs for audit, inherent and control risks, and there are five levels of linguistic variables for outputs. FISs include 25, 25 and 81 rules of if-then respectively and officials of Iranian audit experts confirm all the rules.
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