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Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract
In semiotics, the denotative relationship is established between the three aspects of the sign, the object, and the interpretation of the same sign, and symbolic processes find endless meanings and this relationship classifies the symbolic, indexical and iconic species. Proverbs are taken from the context of a linguistic community that form multiple meanings and show gender construction. with semiotic studies, the significations of the opposition between man and woman in proverbs can be investigated. In this article, the concept of gender in proverbs of Tati language is investigated with Peirce's semiotic model in order to evaluate and analyze the reflection of their linguistic elements in all kinds of signs. Based on the result, Tati proverbs are mostly in the form of symbolic signs. The highest frequency is objectification and then otherness. The symbolic contrast between male and female gender and the discourse order and hierarchical position of this concept in the form of ideas of superiority/inferiority, value/worthless, human/animal, authoritarianism/weakening, center/periphery, self/other, norm/abnormal, friend/ Enemy and Dominant/Dominant have been classified and conceptualized. This opposition represents the idea of the otherness of the female gender and the superiority of the male gender over it as a dominant discourse. Based on this, the gender structure of this concept can be shaped in relation to the language type of Tat tribes of Northern Khorasan.
Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract
Some muslim scholars and theologians believe in monotheistic creation, but others believe that Allah The Almighty has inspired monotheism to man after his creation. Aiming to investigate the collection of Mulla Sadra's works on monotheism (tawhid) and its correspondent beliefs, the Topic-based Discourse Analysis Model (See Mazinani, Alizadeh, and Azad, 1397) was applied. The results were categorised in three sections: claims, warrants/topos, and certainty in assertion. Sadra claims that the belief in the monotheism is Man's very nature and a necessity for his existence. He has made most of his claims by refering to Quranic verses and hadiths by their explicit quotation, implication and interpretation. In the maze of this important matter, this philosopher occasionally takes an implicit rational position by denoting the topos such as "benefit", "harm", "fundamental need", "necessity", "fulfillment of treaties", "trustworthiness" "Pressure", and "attribution", which these can also be infered from the quoted verses and hadiths. Of course, such kind of argumentation by Mulla Sadra makes it difficult for non-Muslims and rationalists to accept his claims and theory. In all the data considered, however, an influential decisive declarative tone prevails in the claims so that no words or signs of doubt or any item suggesting Mitigation Strategy were observed. In the same vein, the Intensification Sterategy application was nearly observed in 20% of the data, and the processes of negation and passivization with their specific function were seen in 10% of the data.
Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract
The present study aims to investigate the aggregate analysis of linguistic variables of South Ruedbar language varieties in Kerman province by using the dialectometry and mapping software package with a quantitative and holistic approach. Data collection has been done from 22 sites from the south seven cities of Kerman province. For this purpose, a questionnaire containing 208 words and 10 basic sentences based on ‘National Language Atlas Project Questionnaire of Iran’ and ‘Morris Swadesh basic list words’ are used. The validity of mentioned questionnaire was 0.98 based on Cronbach’s alpha test. The results of aggregate analysis showed that 6 major dialect clusters are distinct and these dialect clusters are divided into subclusters. Each of these dialect clusters has distinct phonetical, phonological, morphological, or syntactical features that set it apart from other clusters. Based on statistical analysis, the ‘A’ dialect cluster due to the use of the continuous prefix /mi-/ and plural suffix /-hɑ/ in comparison to other clusters has the highest similarity and the ‘B’ cluster in cases such as the use of the infinitive suffix /-eng/ and continuous suffix /-æ/ has the highest difference in terms of morphology and syntacticity with the standard Persian. The ‘J’, ‘D’, ‘H’ and ‘V’ dialect clusters despite their distinction from the standard Persian, as the use of the continuous prefix /-ʔæ/ and plural suffix /-on/, are most similar to Aeach other and in terms of phonetic process and the presence of South Ruedbar variety special phones are similar to ‘B’cluster.
Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract
Semiotics, with its phenomenological turn, provides the basis for re-projecting lost dimensions of meaning such as presence, perceptual-sensory flow, and the body. French semiotician Eric Landowski also proposes linguistic systems of adaptation and coincidence in a different way from Grimas. The Resāle-y-Mūmūsīyāh by Ehsan Abdipour, in which the linguistic actions of the actors create an interactive situation in which we witness the transformation of discursive spaces into each other and one event into another. These successive becomings are formed in the context of language and through perceptual-sensory and bodily processes. The issue is how the process of generating meaning in the context of language and the processes of transition from language to discourse are realized. In this research, the mechanisms of meaning production are investigated from the perspective of Landofsky's phenomenology in the context of adaptation, coincidence, programmatic and persuasive linguistic systems. Also, the phenomenological manifestations of the body are examined and analyzed by relying on the linguistic and discourse systems of this story. The aim of the research is to apply Landowski's phenomenological model in analyzing the linguistic structures of the story. The research question is also how does the main character of the story live in the world and which linguistic and discursive systems are seen in this story? The result shows that the systems of planning and persuasion force the main character of the story to accept certain requirements, but the systems of adaptation and coincidence create a lived experience for her.
Volume 0, Issue 0 (Articles accepted for Publication 2024)
Abstract
Aim and Introduction:
Vulnerable employment, a segment of the informal economy, includes home-based businesses that emerge due to a lack of opportunities for formal employment. These businesses often operate without essential benefits such as medical insurance, social security, bonuses, and pensions, which exposes workers to economic instability. Consequently, many individuals engaged in vulnerable employment seek loans and financial assistance to expand their business activities and transition to the formal sector. Banks, as the primary providers of such loans, request collateral from borrowers – typically in the form of property documents – to ensure repayment and mitigate financial risk. Strengthening legal rights related to loan collateral enhances banks’ confidence in issuing loans, thereby increasing access to credit for vulnerable workers.
Due to the oil-dependent nature of OPEC economies and their reliance on oil revenues, many of these countries often lack robust production infrastructures capable of generating sufficient formal employment opportunities. This study aims to analyze the effect of strengthening loan-related legal rights on vulnerable employment in OPEC member countries, including Iran, Iraq, Algeria, Angola, Congo, Gabon, Kuwait, Saudi Arabia, the United Arab Emirates, Venezuela, Guinea, Libya, and Nigeria, during the period from 2013 to 2021.
Methodology:
Following the approach of Herkenhoff et al. (2021), this study employs a model in which the independent variables include the strength of legal rights related to loans, oil revenues, secondary school enrollment rates, and the urbanization ratio. Given the study’s objective of analyzing the threshold effects of legal loan rights on vulnerable employment, the Panel Smooth Transition Regression (PSTRmouseout="msoCommentHide('_com_1')" onmouseover="msoCommentShow('_anchor_1','_com_1')">[A1] ) method is used to estimate the model.
Results and Discussion:
The analysis identifies a 6.22% threshold in the legal rights index, distinguishing two distinct regimes. In the first regime, the strength of legal loan rights does not significantly impact vulnerable employment. However, in the second regime, a higher index value reduces vulnerable employment, suggesting that more substantial legal loan rights facilitate the transition of workers from the vulnerable to the formal sector. Additionally, oil revenues and secondary school enrollment rates exhibit a negative effect on vulnerable employment, while the urbanization ratio has a positive effect.
Conclusion:
The findings of this study indicate that strengthening legal loan rights has contributed to a reduction in vulnerable employment, which is a subset of informal employment. This shift has contributed to growth in formal sector employment. Banking regulations and enhanced requirements for obtaining collateral have increased banks’ confidence in lending, as they are better able to mitigate the risk of non-repayment. However, this system primarily benefits individuals who can pledge valid collateral, such as real estate and housing documents. Given the high value of such collateralized assets, borrowers are more likely to invest their loans in business development, transitioning their employment from the informal to the formal sector. In addition to securing stable employment, they also gain access to social benefits such as insurance and social security. This financial stability enables them to make timely loan repayments, preventing defaults and preserving their financial credibility.
Based on these findings, it is recommended that governments and banking authorities in the investigated countries implement strict laws and regulations to guarantee loan security and identify factors contributing to bank insolvency. Such measures would help prevent financial resource mismanagement in the banking sector and reduce the probability of bank failures. Strengthening financial regulations and risk management strategies would facilitate lending, ultimately promoting employment growth in the formal sector and reducing the prevalence of vulnerable employment.
Furthermore, the study reveals that oil revenues negatively impact vulnerable employment, which may be attributed to increased government spending on productive investments and formal job creation. This suggests that redirecting oil revenues toward investment, production, and employment generation—rather than short-term expenditures—can facilitate the transition of workers from the informal to the formal sector. Thus, policymakers are encouraged to prioritize long-term economic strategies that allocate oil revenues to sectors that foster sustainable employment opportunities.
The findings also highlight the positive effect of education on labor force transition. Higher levels of education and training result in a more skilled workforce, increasing their acceptance and employability in formal job markets. Therefore, governments should allocate additional resources to public education, provide free schooling, and expand access to higher education for economically disadvantaged groups. Promoting scientific education and fostering a culture that values learning can further enhance workforce skills and economic mobility.
Finally, the study finds that urbanization has had a positive effect on vulnerable employment, indicating that increasing urbanization has not been accompanied by industrial advancements or skill development, thereby failing to support the expansion of the formal sector. Instead, urbanization in the studied countries has often been driven by unfavorable business environments, weak regulatory frameworks, and a lack of political transparency, contributing to the growth of the informal economy. To address these challenges, policymakers should focus on improving governance, strengthening legal and economic structures, and fostering a business-friendly environment that supports formal employment
Vulnerable employment, a segment of the informal economy, includes home-based businesses that emerge due to a lack of opportunities for formal employment. These businesses often operate without essential benefits such as medical insurance, social security, bonuses, and pensions, which exposes workers to economic instability. Consequently, many individuals engaged in vulnerable employment seek loans and financial assistance to expand their business activities and transition to the formal sector. Banks, as the primary providers of such loans, request collateral from borrowers – typically in the form of property documents – to ensure repayment and mitigate financial risk. Strengthening legal rights related to loan collateral enhances banks’ confidence in issuing loans, thereby increasing access to credit for vulnerable workers.
Due to the oil-dependent nature of OPEC economies and their reliance on oil revenues, many of these countries often lack robust production infrastructures capable of generating sufficient formal employment opportunities. This study aims to analyze the effect of strengthening loan-related legal rights on vulnerable employment in OPEC member countries, including Iran, Iraq, Algeria, Angola, Congo, Gabon, Kuwait, Saudi Arabia, the United Arab Emirates, Venezuela, Guinea, Libya, and Nigeria, during the period from 2013 to 2021.
Methodology:
Following the approach of Herkenhoff et al. (2021), this study employs a model in which the independent variables include the strength of legal rights related to loans, oil revenues, secondary school enrollment rates, and the urbanization ratio. Given the study’s objective of analyzing the threshold effects of legal loan rights on vulnerable employment, the Panel Smooth Transition Regression (PSTRmouseout="msoCommentHide('_com_1')" on
Results and Discussion:
The analysis identifies a 6.22% threshold in the legal rights index, distinguishing two distinct regimes. In the first regime, the strength of legal loan rights does not significantly impact vulnerable employment. However, in the second regime, a higher index value reduces vulnerable employment, suggesting that more substantial legal loan rights facilitate the transition of workers from the vulnerable to the formal sector. Additionally, oil revenues and secondary school enrollment rates exhibit a negative effect on vulnerable employment, while the urbanization ratio has a positive effect.
Conclusion:
The findings of this study indicate that strengthening legal loan rights has contributed to a reduction in vulnerable employment, which is a subset of informal employment. This shift has contributed to growth in formal sector employment. Banking regulations and enhanced requirements for obtaining collateral have increased banks’ confidence in lending, as they are better able to mitigate the risk of non-repayment. However, this system primarily benefits individuals who can pledge valid collateral, such as real estate and housing documents. Given the high value of such collateralized assets, borrowers are more likely to invest their loans in business development, transitioning their employment from the informal to the formal sector. In addition to securing stable employment, they also gain access to social benefits such as insurance and social security. This financial stability enables them to make timely loan repayments, preventing defaults and preserving their financial credibility.
Based on these findings, it is recommended that governments and banking authorities in the investigated countries implement strict laws and regulations to guarantee loan security and identify factors contributing to bank insolvency. Such measures would help prevent financial resource mismanagement in the banking sector and reduce the probability of bank failures. Strengthening financial regulations and risk management strategies would facilitate lending, ultimately promoting employment growth in the formal sector and reducing the prevalence of vulnerable employment.
Furthermore, the study reveals that oil revenues negatively impact vulnerable employment, which may be attributed to increased government spending on productive investments and formal job creation. This suggests that redirecting oil revenues toward investment, production, and employment generation—rather than short-term expenditures—can facilitate the transition of workers from the informal to the formal sector. Thus, policymakers are encouraged to prioritize long-term economic strategies that allocate oil revenues to sectors that foster sustainable employment opportunities.
The findings also highlight the positive effect of education on labor force transition. Higher levels of education and training result in a more skilled workforce, increasing their acceptance and employability in formal job markets. Therefore, governments should allocate additional resources to public education, provide free schooling, and expand access to higher education for economically disadvantaged groups. Promoting scientific education and fostering a culture that values learning can further enhance workforce skills and economic mobility.
Finally, the study finds that urbanization has had a positive effect on vulnerable employment, indicating that increasing urbanization has not been accompanied by industrial advancements or skill development, thereby failing to support the expansion of the formal sector. Instead, urbanization in the studied countries has often been driven by unfavorable business environments, weak regulatory frameworks, and a lack of political transparency, contributing to the growth of the informal economy. To address these challenges, policymakers should focus on improving governance, strengthening legal and economic structures, and fostering a business-friendly environment that supports formal employment
mouseout="msoCommentHide('_com_1')" onmouseover="msoCommentShow('_anchor_1','_com_1')" style="text-align: justify;">
mouseout="msoCommentHide('_com_1')" onmouseover="msoCommentShow('_anchor_1','_com_1')" style="text-align: justify;">
mouseout="msoCommentHide('_com_1')" onmouseover="msoCommentShow('_anchor_1','_com_1')" style="text-align: justify;"> [A1]The written abbreviation is for “the Panel Smooth Transition Regression”
Volume 3, Issue 1 (6-2013)
Abstract
Given the importance of loyalty, this study seeks to test and investigate the effectiveness and mechanism of relationship between factors that influence the e-loyalty in Saman Bank. In this regard, Relationship Marketing Strategy is the independent variable, e-satisfaction and e-trust are the moderating variables and e-loyalty is the dependent variable in the research model. The research population is a group of customers in Tehran who used the internet services of Saman Bank. Two underlying foundations of Relationship Marketing, mutual obligation and communication, significantly affect e-trust and conflict management foundations and competency are highly effective one-satisfaction. However; no meaningful relationship was found between conflict management and e-trust.
Volume 3, Issue 1 (6-2014)
Abstract
The probiotic effects of Saccharomyces cerevisiae and Aspergillus niger on the feeding efficiency, body composition, ammonia excretion, blood serum enzymes and the intestinal microbiota of juvenile beluga, Huso huso was investigated. The fish (31.8±2.81g) were randomly allocated into 12 oval tanks at a density of 30 individuals per tank with three replicates for each treatment,. The fish were fed either a basal diet (as control) or the diet supplemented with S. cerevisiae and A. niger (2×106, 4×106 and 6×106 cells g-1) for 8 weeks. The results indicated that the probiotic supplemented diet at 6×106 (cells g-1) significantly improved FCR and other nutritional indicators compared to the control treatment (p<0.05). Significant improvements (p<0.05) were also observed in ammonia excretion and blood serum enzymes between treatments. Total viable fungus and Lactobacillus spp. count were significantly improved in treatment compared to control (p<0.05). These results indicated that S. cerevisiae and A. niger improved feeding performance and blood serum enzymes of beluga.
Volume 4, Issue 1 (Spring 2020)
Abstract
Abstract
Research Subject: In recent years, the use of graphene nanoplatelets (GnPs) in polymer nanocomposites has attracted considerable attention. Dispersion state of GnPs in the polymer matrix has a great importance which can affect microstructure and final properties of nanocomposite. Therefore, in the present work, the effect of compatibilizer on the dispersion state of GnPs and also on internal structure, orientation, and tensile properties of polypropylene (PP)/GnPs nanocomposite fibers are investigated.
Research Approach: PP/GnPs nanocomposite fibers containing 0.1% and 0.5% GnPs with and without maleic anhydride-grafted polypropylene (PP-g-MA) were melt spun. Dispersion state and location of GnPs in the nanocomposite fibers were investigated by transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). Fiber orientation and crystallinity were studied by polarized Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC), respectively. Moreover, fracture behaviour of PP/GnPs nanocomposite fibers was investigated by cross-sectional scanning electron microscopy (SEM) images of tensile fractured samples. Using Halpin-Tsai model, experimental tensile moduli of fibers were compared with the predicted values.
Main Results: TEM images show that in the compatibilized PP/MA/GnPs nanocomposite fibers, GnPs aggregates decrease and their size also reduces, suggesting that GnPs dispersion improved. An increase in Lp of the compatibilized sample recorded from SAXS analysis indicates that the more GnPs are located in the intrafibrillar region. Based on polarized FTIR and DSC results, orientation and crystallinity of PP/G0.5 nanocomposite fiber are found to significantly increase after inclusion of PP-g-MA. Moreover, reinforcing effect of GnPs in PP/MA/GnPs nanocomposite fibers could be explained by better GnPs dispersion and changes in internal structure of fiber. Furthermore, the tensile fracture behavior of PP/GnPs nanocomposite fiber changes from ductile to brittle in the presence of PP-g-MA.
Volume 4, Issue 4 (Fall 2019)
Abstract
Aims: Musculoskeletal Disorders (MSDs) as one of the important multifactorial health problems among school going adolescents that might be due to back pack carrying. The aim of this study was to determine the relationship between backpack standards with MSDs among students.
Method and Instrument: This was a cross-sectional designed study. The non-probability sample consisted of 159 students from four secondary and high schools in Pars Abad city, Iran, in 2019. A combination of two Nordic and Cornell questionnaires were used to collect data. The data were about demographic charisteristics and experiencing pain or discomfort in musculoskeletal system that were obtained via the self-report. Data analyzed by Chi-Square and Logistic Regression test using SPSS-22 software.
Findings: In total, 159 students with mean age of took part in the study. A significant difference was found between the neck, shoulder, upper back, lower back, forearm, and thigh pains with backpack carrying standards such as “way of carrying backpack”, “how to put the light and heavy stationery in the backpack”, and “backpack height “. the inappropriate carrying of backpack and improper placement of stationery in the backpack could cause shoulder and thigh pains was more than other MSDs respectively
Conclusion: This study indicates that there was a relationship between all of reviewed standards for using backpack with MSDs among school going adolescents. Thus, it is suggested to focus on increasing knowledge of adolescents and their parents to use the proper backpack.
Method and Instrument: This was a cross-sectional designed study. The non-probability sample consisted of 159 students from four secondary and high schools in Pars Abad city, Iran, in 2019. A combination of two Nordic and Cornell questionnaires were used to collect data. The data were about demographic charisteristics and experiencing pain or discomfort in musculoskeletal system that were obtained via the self-report. Data analyzed by Chi-Square and Logistic Regression test using SPSS-22 software.
Findings: In total, 159 students with mean age of took part in the study. A significant difference was found between the neck, shoulder, upper back, lower back, forearm, and thigh pains with backpack carrying standards such as “way of carrying backpack”, “how to put the light and heavy stationery in the backpack”, and “backpack height “. the inappropriate carrying of backpack and improper placement of stationery in the backpack could cause shoulder and thigh pains was more than other MSDs respectively
Conclusion: This study indicates that there was a relationship between all of reviewed standards for using backpack with MSDs among school going adolescents. Thus, it is suggested to focus on increasing knowledge of adolescents and their parents to use the proper backpack.
Volume 5, Issue 1 (9-2013)
Abstract
The present study titled "the effects of social and economic modernization on the occurrence of the Constitutional Revoloution in Iran" seeks to present the economical and social innovation achieved during Qajar period and also discusses the role and effects of these innovations in encouraging Iranian people for political participation and overthrowing Qajar dynasty. this study shows that the innovations occurred during Qajar period caused changes on old customs and introduced modernism and new styles of social life. It also, taught new concepts like freedom and law to the Iranian people. Struggling to achieve the above goals and to protect the country, the people decided to become united. By establishing the parliament, they limited the power of the monarchy and made a way for people to participate in governing their country. Today this unity and interference is called political participation. The method of this research is historical comparative and the method of data gathering is library and documentary.
Volume 5, Issue 1 (Winter 2020)
Abstract
Aims: Backpacks are the most popular means of carrying backpack among school going students, but long duration of backpack carrying might lead to MusculoSkeletal Disorders (MSDs) among them. The purpose of the present study was to determine if MSDs could be related to backpack carrying among school going students.
Method and Instruments: This cross-sectional study was carried out among 159 students selected by convenience sampling from four schools in Pars Abad city of Ardabil in Iran in Autumn 2019. A combination of two Nordic and Cornell questionnaires used to collect the data via self-reporting , an anatomical figure of musculoskeletal system was provided to mark the area of pain , and also the students’ body weight and weight of their backpack were recorded using a digital weighting scale. Data analysis was performed using SPSS-23 software by Chi-Square test and descriptive statistics.
Findings: Lower back, neck, and wrist pains were the most common pains, respectively. Based on the results of Chi-square test, none of the musculoskeletal pains were significant association with transport ways vehicles to school such as walking, cycling, by car except for ankle pain (P-value <0.05). However, students who walked to school reported a higher prevalence of MSDs.
Conclusion: According to the study’s results, there was only a significant association between “types of transport to school” with ankle pain among students who carried backpack during last 12 month. Hence, it is recommended that researchers consider other determinants of these disorders in future research.
Method and Instruments: This cross-sectional study was carried out among 159 students selected by convenience sampling from four schools in Pars Abad city of Ardabil in Iran in Autumn 2019. A combination of two Nordic and Cornell questionnaires used to collect the data via self-reporting , an anatomical figure of musculoskeletal system was provided to mark the area of pain , and also the students’ body weight and weight of their backpack were recorded using a digital weighting scale. Data analysis was performed using SPSS-23 software by Chi-Square test and descriptive statistics.
Findings: Lower back, neck, and wrist pains were the most common pains, respectively. Based on the results of Chi-square test, none of the musculoskeletal pains were significant association with transport ways vehicles to school such as walking, cycling, by car except for ankle pain (P-value <0.05). However, students who walked to school reported a higher prevalence of MSDs.
Conclusion: According to the study’s results, there was only a significant association between “types of transport to school” with ankle pain among students who carried backpack during last 12 month. Hence, it is recommended that researchers consider other determinants of these disorders in future research.
Volume 5, Issue 2 (6-2016)
Abstract
Leptonchus granulosus, recovered from Lorestan province, is described and illustrated based on morphological, morphometric and molecular data. The Iranian population of the species is characterized by its body length of 1091 - 1374 mm, cuticle distinctly two layered, outer layer finely annulated, inner layer distinctly annulated, being partly separated from the body and shriveled after fixation, cap-like lip region separated from the rest of body by constriction, distinctly sclerotised walls of prestoma and stoma, delicate needle-like odontostyle with distinct narrow lumen, 8.0-9.5 mm long, slightly arcuate odontophore, 17-21 mm long, with arms slightly thickened at base, small pear-shaped pharyngeal bulb, occupying 16.6-24.3% of pharynx length, simple intestine, very long prerectum (617-663 µm long), its junction with intestine having three distinct guard cells located between anterior ovary and cardia, didelphic female reproductive system, composed of equally sized less developed tracts, but with distinct parts (tubular uterus, simple oviduct and ovary), conoid to hemispheroid tail and absence of males. In comparison with the available reports of the species, no remarkable variation in morphometric data ranges was observed. This is the first representative of the genus for Iran’s nematode fauna found so far. Molecular phylogenetic studies of Iranian population of L. granulosus using 1669 nt partial sequences of 18S rDNA revealed it forming a clade with another isolate of the species in Bayesian inference (BI) with 0.95 Bayesian posterior probability (BPP).
Volume 5, Issue 3 (Fall 2021)
Abstract
Abstract
Research subject: In this research, epoxy modification was successfully performed by polyurethane and its effect on abrasion and adhesion properties have been investigated. The most important concern in the blending of these polymers was the formation of gels upon exposure of epoxy resin and isocyanate in polyurethane.
Research approach: One solution to overcome this problem is to control the chemical activity of Isocyanate. Therefore to reduce the chemical activity of isocyanate and prevent gel formation due to the combination of epoxy and polyurethane, first polyurethane prepolymer containing 3.58 wt.% NCO was prepared by mixing poly tetra methylene glycol 2000 (PTMG 2000) and toluene di isocyanate (2,4-TDI); and then by adding 20 wt.% of it to the epoxy resin, the curing process was completed by using dimethyl thio-toluene di amine (DMTDA) as a common curing agent and also specific heat treatment.
Main results: Fourier transformation infrared spectroscopy results showed that the modification process has been successful by elimination of the peaks related to epoxide and isocyanate groups in the prepared sample in addition to the formation of a broad peak related to secondary hydroxyl group (C-O) due to the opening of epoxide rings. Pull off tests also confirmed increasing adhesion to carbon steel substrate as a result of secondary hydroxyl generation through this blending. Although, the Persoz hardness of modified epoxy decreased by 5%, but with a 17-fold reduction of elastic modulus (as per tensile test result), abrasion resistance improved 6 times according to abrasion test. Finally, joining of the cavities to each other is introduced as the abrasion mechanism by considering the field emission- scanning electron microscope images.
Volume 6, Issue 1 (6-2017)
Abstract
In a completely randomized experiment, the effect of Daphnia magna meal on growth performance and carcass composition of rainbow trout (Oncorhynchus mykiss) larvae (body weight 0.538±0.197 g) was evaluated for a period of 60 days. Five diets with the same protein content (crude protein 52.70%) were prepared, including two diets containing fermented daphnia meal T1 (20%), T2 (30%), two diets containing raw meal T3 (20%) and T4 (30%), and a basal diet without daphnia meal as the control. The bacterial species used for fermenting included five commercial probiotic species. Fermented daphnia meal brought about significantly higher growth and the lowest feed conversion ratios, viz. T1 (1.27 ± 0.35) and T2 (1.31 ± 0.46), in comparison with T3 (1.38 ± 0.37), T4 (1.41 ± 0.42) and the control (1.84 ± 0.69) (p<0.05). The result of carcass composition analyzes showed that the highest protein percentage (68.23 ± 0.48%) was in T2 and the highest percentage of fat and energy (11.26 ± 0.50% , 4761.63 ±48.88 Cal g-1) were in T4 (p<0.05). The overall results of this experiment indicated that daphnia could be considered as a suitable partial protein source in rainbow trout larval feed.
Volume 6, Issue 4 (No.4 (Tome 25), (Articles in Persian) 2015)
Abstract
"Syntactic change should not arise, unless it can be shown to be caused"(Longobardi, 2001:278). Historically placed in second position of the clause, Persian Pronominal Clitics behave differently today and appear in three different structural-typological patterns: a) preposition + clitic assigned oblique case; b) nominal + clitic assigned genitive case; and c) immediate adjacency of a transitive verb assigned accusative case. Aiming to discover the causes of Persian's achievement to this trio of patterns, this study was conducted in the framework of Generative Grammar. The diachronic analysis shows that a sequence of some factors has been involved in changing Persian’s historical second position Clitic System: firstly, some morphological changes and the speaker’s attempt to remove the ambiguities have paved the ground for other structural changes to happen. Secondly, after particular morphological feedings, patterns a & b have been established as a result of analogical generalization of pre-existing linguistic structures. Pattern c has gradually come to existence by frequently reanalyzing the position of clitics in the sentence. This pattern can be a part of the grammaticalization process of Persian clitics that has been accelerated by morphological changes and Reanalysis. As a final step, linguistic contact to Arabic was recognized as an accelerating factor in applying this trio of patterns in Persian Standard Language.
Volume 6, Issue 4 (2-2017)
Abstract
In cyberspace, Social networks have been born as a new type of websites and have gained an enormous range of users and fans. Social networks are one type of social media and are places for forming virtual communities of interested users. Internet users have been classified in different ways based on their type of using social networks. This study seeks to provide a mechanism to predict patterns of behavior in social networks. Due to the expansion of social networks, the selected network requires a model based on the new strategic decisions or policies for better serve users. This study uses data mining techniques for classification and analysis of social network users for better understanding of their behavior and improving services and developing appropriate strategies. Understanding behavioral patterns of users of social networks lead to better adaptation to user needs. The user population applied for analysis includes 31033 users that use a specific Iranian Social Network regularly. A method for clustering and orientation analysis based on past users behavior using CRISP-DM and data mining software is deeply analyzed and described. A full perception of users’ behavior will result in a better match of social network features with users’ needs as well as a high value added for users and profitability for social network owners.
Volume 6, Issue 12 (Fall & Winter 2020)
Abstract
The two Qur'anic words, 'osr' and 'yosr', require a revision of transcripts and interpretations. Most interpreters, and commentators have received the equivalent of "ease and simplicity" for the matter of "yosr" and "hardness" for the matter of "osr." The most important form of error in accepting this concept in verses 5 and 6 of the Sura "Sharh", is the mismatch between the verses and the truth. On this basis, most commentators have used the term "maa" in these two verses as meaning later, and They are influenced by a syntactic rule and a poor narrative and believe that the message of verse 5 and 6 of this sura is that it is two easy with every difficulty. The present article seeks to retrieve the notion of "Osr" and "Yosr" , with the descriptive-analytic method. The retrieval of the concept of "Osr" (difficulty) and "Yosr" (development), and also the study of the correct meaning of the term "Maa", Expresses a concept that has been neglected by most commentators and that concept is the expression of a divine tradition in verse 5; and the consolation and calm of the Prophet on the sixth. Therefore, the reason for the repetition of the verses is not emphasis; but each of the two contains an independent message that has been analyzed in this paper.
Volume 6, Issue 12 (Fall & Winter 2020)
Abstract
Study and recognition and comparison of the divine names, plays an important role in understanding, translation and interpreting the Qur'an. In this research by using descriptive and analytical method, the eight divine names in the field of creation are examined. Based on Arabic poetry and prose, words of linguists and commentators, linguistic contexts, and succession relations, their exact meaning and their use in different verses should be revealed. "Sanee" means who create with precision, science and power. "Sanee" translated to "Maker". "Khaliq" means who create on the basis of size and creativity. The word "Khaliq" in Qur'an is associated with two names: "Rabb" (The Lord) and Razegh" (The Provider). "Khaliq" translated to "Creator"."Fatir" means who fission the inexistence and signifies God's power and greatness. "Fatir" translated to "Bringer". "Mobde", according to its antonyms [Moiid], means who began the creation. "Mobde" translated to "Producer". "Monshe" means the creator who exalt the creations. "Monshe" translated to "Establisher". "Badiee" implies that the Creator's innovation and his needless from former matter and form "Badiee" translated to "Originator". "Bare" means the Creator who himself and His creations are isolated from all flaws. "Bare" translated to "Shaper". "Zare" means the creator that his creations are vast, wide, and dispersed. "Zare" translated to "Multiplier". Without questioning it must consider the conceptual difference between these names in the translation, interpretation and cite of the verses.
Assessing the Relationship between Forms of Spatial Inequalities and Sustainable Development in Iran
Volume 7, Issue 1 (Winter 2025)
Abstract
Spatial inequalities and income and capital gaps between different areas of society are currently considered one of the most significant barriers to sustainable development. Disparities between disadvantaged regions (border or non-border) and developed regions, as well as urban-rural gaps, are the most important signs of spatial inequalities. This paper attempts to study the degree of integration or disparity between urban and rural areas in Iran over the past four decades using a secondary analysis method. Four variables will be analyzed: population distribution, dominant economic and production sectors, poverty levels and distribution, and income and expenditure gaps. Evaluation of the spatial planning system’s performance in the country reveals a sectoral and non-planning approach with an emphasis on centralization and urbanization, which has exacerbated inequalities and disparities between peripheral and central regions, as well as between urban and rural areas. The country has experienced rapid, unplanned, and sometimes uneven urbanization, to the detriment of the sustainability and population balance in small urban areas and rural ones, which has not necessarily been accompanied by balanced regional development. Large cities have attracted a labor force to their peripheries, leading to a life of poverty in marginal and rural areas. While absolute poverty has decreased, rural populations, especially in disadvantaged areas, continue to bear the brunt of poverty. Income and expenditure indicators have also favored urban dwellers. Overall, macro-level data in the country indicates the existence of spatial divisions. However, wherever urban-rural linkages have been established and strengthened, regional and urban-rural disparities have decreased.
Volume 7, Issue 3 (10-2016)
Abstract
To the Iranians minds the matter of the Russification of the Caucasus, as an Iranian area by its historical, cultural and ethnical roots, always has been a fresh and recursive concern; the process in which the Armenians had a dominant role. Inspired by memories of the Crusader Wars, the Armenians always were engaged with the ideal of presence of a powerful Christian state in their neighborhood. Since Western Europe powers never were as close to the region as to cause any change on the Caucasus, naturally the attention of the Armenians had been absorbed to another Christian state, the State of Muscovy. The process which Armenians attempted to involve the ever-expansionist state of Muscovy or later Russian Empire with Caucasus affairs through it, begun by 1660th (1070 H.) and took long up to 1828, year of signing Turkmanchay treaty. This survey tried, by appeal to an explicative approach, to shed light on twists and turns of a 160 years process and the transition of the Armenian loyalty from Iran to the Russia as most as possible. Findings of this survey show that the church leaders, the Meliks, and the merchants, as the triumvir which shaped the Armenian Aristocracy, respectively had the most effective influence on the Armenians political loyalty; while introduction of the Russia was the initiation of the merchants, then the Meliks intensified the aspiration, and at last it was the church which by choosing its new affiliation put the end on everything.