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Showing 101 results for Shahri


Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract

This study explores teachers’ readiness to implement generative artificial intelligence (GenAI) in their teaching and learning processes, alongside the benefits and challenges related to its utilizations in the Omani context. The data analysis process involved analyzing responses from the 5-point Likert scale questionnaire using descriptive statistics. A sample of 61 teachers with different qualifications from different educational institutions in the Sultanate of Oman participated in the study. The findings revealed that teachers had a positive level of readiness to implement GenAI, highlighting a spectrum of readiness levels, such as attending training sessions about GenAI, and a significant willingness of utilizing GenAI tools in their classes. On the other hand, teachers reported a positive benefit and experience in improving their teaching, stating that GenAI enables them to save their time, improves their teaching experience and job satisfaction, and offers them adaptive learning and instant feedback. However, findings revealed number of challenges for teachers such as a lack of awareness about policies and ethics in implementing GenAI tools, and their cost. Moreover, teachers indicated a moderate concern regarding the challenges of integrating GenAI tools into their teaching practices. Based on the findings, the study provides significant insight for teachers, policymakers, and syllabi designers, stressing the significant importance of preparing teachers to efficiently integrate GenAI in their pedagogical duties to make the most educational potential while mitigating related risks.

Volume 0, Issue 0 (ARTICLES IN PRESS 2024)
Abstract

Trissolcus vassilievi (Mayr) (Hymenoptera: Scelionidae) is one of the most important egg parasitoids of the common sunn pest (CSP), Eurygaster integriceps Puton (Hemiptera: Scutelleridae) in Iran. In this study, the fitness of two populations of T. vassilievi was studied on two populations of hosts in terms of life history parameters. Two populations of T. vassilievi were selected: 1/ Tabriz (as a temperate area), and 2/ Varamin (as a subtropical area), as well as for CSP. Moreover, regarding that outcrossing between populations can produce progeny with superior characteristics, the progeny of reciprocal crosses between original populations also were examined on a single host. The crosses between the two populations caused 13.9-18.5% higher net fecundity than maternal populations which suggests fecundity to be a function of maternal phenotype. The intrinsic rate of increase showed minor differences among treatments which varied between 0.291±0.003 to 0.305±0.003. The partial advantage of the Varamin wasps over the Tabriz ones and the crosses over the original populations was obvious. Such differences may be used to obtain more efficient parasitoids in augmentation programs.
 

Volume 1, Issue 1 (12-2010)
Abstract

We present a method to predict the flexible and rigid regions based on sequence. We use the free energy of two consequent amino acids to define a factor for distinguishing flexible regions from the rigid ones. Using statistical analysis of this free energy, we assign a normalized number between zero to one hundred which we call it flexibility number. Taking the effects of up to four neighbors of an amino acid, into account, resulted in an efficient prediction of flexible and rigid regions of a protein.

Volume 1, Issue 3 (9-2012)
Abstract

In order to study the role of Pythium species associated with cantaloupe root and crown rot, samples were collected from infected fields in different areas of Khorasan Razavi province during 2009-2010. The Root pieces were washed and cultured on CMA-PARP medium. The pythium isolates were then purified by hyphal tip method and identified based on van der Plaats-Niterink mycological key. The pathogenic species were identified as Pythium aphanidermatum, P. ultimum var. ultimum, and P. deliense. The pathogenicity of isolates on cantaloupe seedlings was tested under greenhouse conditions by using wheat grain inoculum. The results indicated that P. aphanidermatum was the most prevalent species and was recovered in all the regions. P. ultimum was isolated from Neyshabour, Fariman and Mashhad whereas P. deliense was detected in Khaaf. This to our knowledge, is the first report on occurrence and distribution of Pythium species causing root and stem rot on cantaloupes in Khorasan province.

Volume 1, Issue 3 (10-2014)
Abstract

Background: Despite the genetic heterogeneity reported in familial ALS (FALS), SOD1 gene mutations are the most frequent cause of FALS, accounting for around 20% of familial cases (ALS1) and isolated sporadic cases. Mutant forms of SOD1 exhibit toxicity that promotes the death of motor neurons. It is well documented that FALS produces protein aggregates in the motor neurons of FALS patients, which have been found to be associated to mitochondria. Methods: In this study, we cloned the SOD1 gene, using reverse transcriptase-polymerase chain reaction (RT-PCR) method, from both a healthy control and a living 79 -year-old man with diagnosis of sporadic form of ALS who had shown unusual rapid progression of disease. RNA samples were available from lymphocytes of them. pET28a expression system and BL21 chemically competent Escherichia coli strain as host were used for protein expression. Results: DNA Sequencing data showed both heterozygosis C to G transition at nucleotide position 21 leading to a C6W changing at protein level and a deletion at nucleotides position 73 to 169 leading to complete deletion of exon two.

Volume 2, Issue 3 ((Articles in Persian) 2011)
Abstract

Comparative literature pays attention to the study of literature confluence literature in various languages and its complex relationship in the past and present as well as its historical relationships in term of effectiveness in the field of arts, literary schools, intellectual current issues and people. From this respect, comparing eastern oriented works with western ones as two opposite poles enjoys a particular importance. The present paper proposes the hypothesis that the play King Lear, a work of Shakespeare, is rooted in Iranian legends. After showing the possible relationship of King Lear with East, We has tried to compare the story of King Lear with several Iranian stories and myths such as Fereydoun myth, Indian GOl Bekavoli, devine story of Zatol Sour cast, story of tried, drunk Mirza and the story of king and his three daughters. By decreasing the King Lear to nine fundamental stories and comparing with them western samples, it was made clear that more than ninety percent of the King Lear stories are similar to the Iranian ones. Researches like this in the field of literature studies in modern Iran are not unprecedented. So as far as the authors know, no independent research on Shakespeare’s King Lear based on the above - mentioned hypothesis has so far been carried out.

Volume 2, Issue 3 (11-2012)
Abstract

The methods and techniques of performance evaluation are the key issues in organizational and academic researches.  One of the problems of performance evaluation in working groups is dealing with group performance evaluation and individual performance evaluation. A comprehensive performance evaluation system not only assesses performance at different levels (individual and group) but also considers the dependence and relations between them. Existing systems cannot consider the effect of different levels on each other. In this paper, we use Data Envelopment Analysis method for studying performance as a multi level phenomenon. For this purpose we use a multi-level Data Envelopment Analysis Model for evaluating performance of working groups in a governmental organization in Iran. The model views the groups at the highest level in the hierarchy as the decision-making units whose performance are optimized. Part of the output from the optimization is a set of performance measures for the components of those top level decision-making units. The result shows that the multi-level DEA model is an appropriate model for measuring groups and their members’ performance at simultaneity.

Volume 2, Issue 4 (3-2013)
Abstract

The aim of this study is to investigate different risks of e-banking in private and public banks of Iran. Despite the certain benefits, e-banking carries tremendous risks. The major risks that are associated with e-banking are strategic, operational, legal and reputational risks. Security is considered the central operational risk of e-banking. For example; breach of security allowing unauthorized access to customer information can be classified as an operational risk, but it also exposes the bank to legal and reputational risks. The methodology used for this study is Questionnaire (AHP), and statistical software for data collection and analysis. Senior managers and vice-chancellor of private and public banks are the research population. Finally, based on the research findings, a few suggestions will be offered for electronic banks' risk management in public and private banks.   Keywords: Electronic Banking, Strategic Risk, Operational Risk, Reputational Risk, Legal Risk

Volume 3, Issue 4 (12-2014)
Abstract

Shot hole caused by Wilsonomyces carpophilus is one of the main constraints to prune fruit production in Iran particularly in Khorasan Razavi province. It causes foliage shot hole in spring and early summer; fruit-spotting and cankers on limbs and twigs during autumn rains. The fungus was isolated from the lesions of twigs and was purified on PDA. The pathogenicity and virulence on detached twigs of stone fruit tree species was examined in vitro. Virulence of the pathogen as measured by lesion length was significantly different among the different host species, showing the nectarine as the most susceptible species. In contrast to other hosts, sour cherry did not show any canker on shoots or twigs and disease progress was just as tissue colonization by the fungus hyphae. However, other species such as prune, cherry, apricot and almond did not show significant differences. The results of bud and shoot evaluations indicated that the fungus overwinters as hyphae and conidia in buds, and in the form of hyphae as well as thick-walled globular chlamydospores in twigs. Additionally, viability of recovered conidia ranged from 33 to 90% throughout the dormant season. A better understanding of disease cycle and survival mode of the fungus will help to manage and prevent the disease.

Volume 4, Issue 4 (winter 2024)
Abstract

Problem: Factors such as the change in the emotional connection of humans with the urban space, events and places, have led to the reduction of place attachment and the aggravation of its consequences in Tehran. 
Target: In this research, analysis of key criteria affecting the use of color palettes as an important factor in the identification and improvement of the spatial attachment of urban spaces in Tehran has been considered.

 authors try to redefine the importance and significance of the urban public arts event in urban spaces, identify the feasibility of performing street music in social environments. The green corridor of Shahrchai and the Khayyam Jonubi sidewalk of Urmia city have been studied.
Method: Interpretive Phenomenological Approach (IPA) is used as a qualitative approach, which aims to provide detailed reviews of the personal life experience of the color perception of the city, and the key criteria affecting the use of the palette. Color schemes are presented in spatial correlation in the framework of causal layered analysis (CLA). Due to the limitation of available samples, a targeted non-random sample was used to identify eleven people with conditions to identify and analyze the approaches and criteria.
Result: The findings of the research showed that the criteria of color preferences, spatial context, citizens' participation, mental image, color perception in the decision-making and urban management system are among the most important criteria affecting the subject of the research. The importance of using color in promoting attachment is influenced by the environmental context, which can lead to the observance of principles such as the presence of citizens in the context of participation. In order to improve the situation of spatial attachment in connection with the color palettes of Tehran metropolis, strategies have been presented in the fields of urban management and design, citizens' participation, and creativity and innovation.


Volume 5, Issue 2 (8-2014)
Abstract

Analysis of signed biological networks has been an interest of some researchers in recent years. We consider communities and balanced clusters as two structural patterns that may reveal different structures in the networks. Although biological networks tend to structural balance, this study clarifies adhesive communities in some transcriptional networks of ecoli and yeast differ from the balanced clusters and have significantly more negative links in their structure. This difference may be used as an index in categorizing various systems' structure and function. Also we study the important role of the positive links between balanced clusters, even though the links between these clusters are mostly negative. Analyzing data of some Gene Regulatory Networks, shows that perturbing the genes located at these links, has a larger effect on the system and causes more distance from the initial equilibrium state. So, signed clustering and detecting the links between these clusters can be considered as an effective approach in detecting the functional units and the key components in the system. This can be useful in applications like gene targeting in drug synthesis.

Volume 5, Issue 3 (9-2017)
Abstract

Background: Environmental stresses, especially salinity and drought, are effective on seed germination and growth.
Materials and Methods: After breaking seed dormancy by simultaneous use of leaching (48 hours) and gibberllic acid (1000 ppm), germination characteristics and seedling growth of Citrullus colocynthis from two ecotypes of Sistan-Baluchestan with six  levels of drought (0, -0.3, -0.6, -0.9, -1.2, -1.5 Mpa) and salinity (0, 50, 100, 150, 200, 250 mM) were studied. This experiment was carried out in two different factorial experiments using completely randomized design with four replications. Statistical analysis was performed using version 18 of SPSS software and Factorial analysis of variance (general linear model) and mean comparisons were done using Duncan's multiple range test. Results: The results demonstrated that there were significant differences among different levels of drought and salinity in all measured traits (P<0.01) and a significant decrease in seed germination and seedling growth were observed with increasing levels of drought and salinity (P<0.01). The results revealed that there were significant interactions effect between ecotype and different levels of drought as well as salinity (P<0.01), so seed vigor of Zabol’ ecotype was higher than that of Saravan.
Discussion and Conclusions: This species has acceptable germination at -0.6 Mpa droughts and 50 mM salinity. These issues must be considered in its intense planting in Sistan-Baluchestan province and using of Zabol’ ecotype seed is recommended.

Volume 5, Issue 5 (No.5 (Tome 21), (Articles in Persian) 2014)
Abstract

In recent years, extensive efforts have been done in developing new educational methods for teaching foreign language in order to increase the language learners' proficiency. This study aims to assess the role of the combined approach of the notional functional syllabus approach and the task-based approach for the purpose of "Arabic for the general aims" and "Arabic for the general academic aims". This assessment has been applied by investigating the required capabilities in learning two skills of speaking and listening in Arabic language by using the descriptive-analytical method. The most important result obtained from this study is that for having an effective communication with the speakers of foreign languages, the issue of linguistic knowledge and even full language input are not so much effective. The factors, which play a significant role in mastering the second languages, include: providing a conversational environment similar to the culture and community of its native speakers, making the process of learning functional and applicable, planning for the creative usage of language ability, and lastly, practical and continuous reproducing of language by the learners.
Bahman Shahri,
Volume 5, Issue 19 (Fall 2012)
Abstract

Since metaphors occur in language, it is an appropriate tool to identify ideology with. The choice of different metaphors in a text by language users would reveal its dominant ideology. Contrary to this, different ideologies may produce different metaphors to support their basic beliefs. Taking conceptual metaphor theory and Teun van Dijk’s theory of ideology as the basic definitions in this paper, the functions of metaphor in an ideological system and also the role of metaphor in different social contexts are being studied.

Volume 6, Issue 1 (12-2006)
Abstract

Home Uterine Activity Monitoring (HUAM) has demonstrated to be of great value for preventing preterm labor in recent years. In this research, a low cost monitoring device for non-invasive monitoring of the uterine activity in pregnant women is presented. The new device has been designed based on an inductive Colpitz oscillator and vertical displacement of a ferrite core in a coil. The resulting frequency of the oscillator is proportional to the pressure in the external surface of the abdomen. This frequency is measured by the portable monitor. A low-power static random access memory (SRAM) provides long-term data storage. The proposed sensor for detecting uterine contractions has light weight, high stability and low cost. This sensor is very simple to manufacture and use for long-term ambulatory monitoring of the uterine activity. Furthermore, this sensor can be calibrated using software. Other features of the sensor are, resolution of 0.13 mmHg, repeatability close to 96% and input range from 0 to 95.32 mmHg.

Volume 6, Issue 1 (No.1 (Tome 22), (Articles in Persian) 2015)
Abstract

Since the advent of amendatory or revolution in the grammar-translation method in late 19th century, the processes dominating the second language have changed considerably in the western world. In teaching Arabic language to Persian speakers, however, it is often focused on the grammar-translation method: generally, reading and comprehension and, in fact, lingual ability of the students. In this study, we try to represent an appropriate model named ATN-D in the three areas of language learner, teacher, and style to develop communication ability in terms of needs and challenges using descriptive-analytic method. ATN-D is acronym of four methods: Audio-Lingual Method; Task-based Approach, Notional Functional Syllabus, and Desuggestopedia. We study repetition subject in order to stabilize lingual structures and vocabularies in the Audio-Lingual Method.  We investigate forming a natural conversational environment and communication and action aspects in Task-based Approach, and Notional Functional Syllabus, respectively. Finally, suggestion-desuggestion is studied in Desuggestopedia method. The most significant result obtained of applying this theory is that appropriate dialogue-directed way, correct use of grammatical structures, strengthening and suggestion for ability in applying proper expression in special social situations, ability in starting, entering, cooperating and ending a conversation, as well as ability in developing a contact with correcting the conversational process and so on play a considerable role in learning two oral skills (speaking and listening) in Arabic language in order to strength and stabilize the communication ability.   

Volume 6, Issue 2 (6-2017)
Abstract

The functional response of the egg parasitoid, Trissolcus vassilievi (Nees) (Hym., Scelionidae), on eggs of the sunn pest, Eurygaster integriceps Put. (Hem., Scutelleridae) was investigated at six constant temperatures (12, 15, 20, 25, 28 and 32 °C) for 8 hours. Using logistic regression, a type III functional response was determined for T. vassilievi at the two temperatures 15 and 32 °C. Any functional response was not detected at other temperatures. The Hassells’ type III model was used for estimating searching efficiency (a) and handling time (Th). At 32 °C the highest attack rateand the lowest handling time was recorded 0.2029 per hour and 0.1856 hour, respectively. Results show that the parasitoid can be used in the pest management programs at low and high temperatures.

Volume 6, Issue 3 (9-2017)
Abstract

Aphis gossypii Glover is one of the major pests of cucumber in Iran. The effects of different concentrations of nitrogen (N1 = 0, N2 = 30, N3 = 60, N4 = 90 and N5 = 120 kg/ha), phosphorus (P1 = 0, P2 = 15 and P3 = 22.5 kg/ha) and silicon (Si1 = 0, Si2 = 100 and Si3 = 200 kg/ha) on life table parameters of apterous morph of A. gossypii were studied. This study was conducted as factorial experiment based on RCD with nine replications in a growth chamber at temperature of 25 ± 3 °C, 60 ± 5% relative humidity (RH) and a photoperiod of 16: 8 h (light: dark). The experiments were carried out using clip-cages that were fixed on leaves of cucumber growing in pots. According to the results, total fecundity of A. gossypii significantly was different among treatments and it was the highest on N1P2Si2 (64.33 offspring) and the lowest on N3P2Si1 (22.67 offspring). The lowest and the highest values of R0 were observed on N3P2Si1and N4P2Si2, respectively. The shortest mean generation time (T) was found on N4P1Si3 and the longest was on N5P3Si1. Furthermore, the lowest and the highest values of r were obtained on N5P3Si2 (0.27 day-1) and N5P1Si1 (0.41 day-1). Our results showed that in simultaneous application, the phosphorus had a more impact on life history and performance of cotton aphid.

Volume 6, Issue 4 (No.4 (Tome 25), (Articles in Persian) 2015)
Abstract

This article analyzes the sources which have been cited in articles of Language Related Research. The research method is citation analysis, and data analysis was performed by Excel software. The results showed that in this period of time, 213 articles were published. 162 papers were presented as team work and the rest were individual studies .The books with 3112 citations and journal articles with over 1258 citations were more than from other sources. Among the cited sources of the Persian, 79.45 percent of the books were written and 20.54 percent were translation. Also, 97.49 percent (506) of the Persian journals articles were written and 2.50 percent (13 cases) have been translation.The highest cited author and translators were respectively, “Hamid Reza Shaeir” with 44 and “Farzaneh Taheri” with 10 citations. The highest cited book in Persian was “Semiotics of discours analysis” with 13 citations. The highest cited journals in Persian and English were the “Journal of Language Related Research” and “Language”, respectively with 76 and 29 citations.  

Volume 7, Issue 2 (Spring 2021)
Abstract

Backgrounds: Metallo-β-Lactamase (MBL) enzymes-producing Pseudomonas aeruginosa strains are one of the most important causes of nosocomial infections and are very difficult to treat, leading to high mortality rate. Therefore, control of these cases is very important, especially in burns. This study aimed to systematically review published data on MBL genes prevalence among P. aeruginosa strains isolated from burn patients.
Materials & Methods: ISI Web of Science, Scopus, PubMed, and Google Scholar were searched using appropriate key terms as follows: P. aeruginosa, metallo-β-lactamase, burn patients, imipenem resistant, and Iran. Antibiotic susceptibility tests were conducted by Kirby-Bauer disc diffusion and broth microdilution methods according to the CLSI guidelines. The MBL producers was evaluated by the combination disk diffusion test (CDDT), and detection of genes such as blaIMP, blaVIM, blaSPM and blaNDM was performed with polymerase chain reaction (PCR). In this review statistical analyses were performed using STATA statistical software Ver.13.
Results: Out of 410 retrieved articles, 18 articles were eligible to be included in this systematic review and meta-analysis. These studies were carried out in Tehran, Shiraz, Yazd, Zahedan, and other locations. Pooled estimation of all P. aeruginosa strains included in 18 studies showed that the prevalence of MBL-producing P. aeruginosa strains in Iranian population was about 49% (95% CI: 33-65). The present study findings also revealed that in Iranian population, the most prevalent MBL genes were blaIMP with 17% (95% CI) and blaVIM with 13% (95% CI), respectively.
Conclusion: Detection of these bacterial resistance genes should be performed nationally, and strict control measures should be put on the agenda to reduce the incidence of these cases.

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