Showing 48 results for Coi
Volume 0, Issue 0 (2-2024)
Abstract
Eric Landowski's semantic and interactive system based on four paradigms of "planning"; "Persuasion"; "Accident and adaptation" is based on the principles of "regularity", "intention", "chance" and "emotional", respectively. Naturally, it is possible to implement this model in epistemological and religious fields in which it is compatible with the interactive practices of the subjects, and based on this, the variety and difference of religious personality practices can be read with this model. Contract. One of the discourses in the Holy Quran is the conversations and interactive practices of Prophet Yusuf with other people in the surah. Relying on a descriptive-analytical method, this study seeks to examine the dialogues and interactive practices of Yusuf's story based on the theoretical framework of Eric Landowski and to explain the relationship between this model and the characters of Surah Yusuf. The general result of the research shows that the subjects and interactive practices are distinguished from each other on the basis of four semantic systems, and each of the characters in the story is adapted based on one of the four semantic systems. Is interception; Among them: It is the interactive practices of Prophet Yusuf (AS) that are based on the type of insight and ideology of the origin and destination of the universe, within the framework of the programmatic semantic system, and other characters are also based on the type of insight and goals. Which follow are debatable and applicable in one or two types of this semantic system.
Volume 4, Issue 2 (9-2015)
Abstract
The effects of dietary nucleotide at 5 levels of 0.0% (Control), 0.15%, 0.25%, 0.35% and 0.5% on the body composition and fatty acids of the grouper, Epinepheluscoioides, with initial weight of 10.70 ± 0.29 g was investigated for a period of 10 weeks. The results indicated improvedgrowth parameters uponadding nucleotide. The best value of growth parameters were observed at nucleotide level of 0.35% that statistically showed higher values for final weight, weight gain andcondition factor than other treatments (P<0.05).There was nosignificant differenceinsurvival(P>0.05). The 0.35% nucleotide level also resulted in a better fatty acids profile, including EPA, EPA+DHA and n-3 than the control. However, 0.5% nucleotide showed significantly higher saturated fatty acids, MUFA and n3/n6 than the control. No significant differences were observed in arachidonic acid and DHA among the treatments (P>0.05). Chemical analysis showed the highest muscle protein in 0.15% and the highest muscle fat in 0.15 and 0.25 treatments, which were significantly higher (P<0.05) than the control group. The results of this study showed that dietary nucleotide has positive effects on growth performance and fatty acid profile of the grouper and the 0.35% level had a better performance.
Volume 5, Issue 2 (3-2025)
Abstract
The duality of causality-coincidence is one of the important issues in the history of human thought. The theory of causality in Islamic philosophy was formed on the axis of essential possibility and, after passing from the elementary period, reached its peak in Allameh Tabataba'i. On the other hand, the theory of coincidence reached its perfection in David Hume after its development. The parties to the dispute argue around this axis whether the preference of existence over non-existence in essences requires a preferred cause or not? Regardless of whether the aforementioned preference is due to a cause or chance, the more important question is whether the occurrence of the aforementioned preference in essence is possible or not? If this preference is impossible, the necessity of the existence of a third perspective and a departure from the aforementioned duality is established. This article seeks to explain the aforementioned challenge and present a solution based on Lewis's idea of possible worlds. Of course, this perspective has no connection to Lewis's causal perspective.
Volume 6, Issue 6 (12-2015)
Abstract
Lieber (2004, 2009) is a decompositional approach with seven semantic features and a principle called coindexation principle. In this theory each lexical item has one semantic skeleton and one semantic body. The skeleton may consist of a hierarchical arrangement of functions and arguments and the semantic body contains two layers: the first one, like semantic skeleton, is relatively stable and can be formalized but the second layer consisting of general information and encyclopedic knowledge, varies a lot. Coindexation principle identifies the arguments of two or more lexical items and makes another item that denotes one unified lexical item. This paper studies the semantic contributions of prepositions in Persian, and then, based on semantic features, classifies them. The conclusion of the paper is that prepositions like other categories as a result of semantic skeletons and weak semantic bodies, own semantic contributions and they have some common semantic features with verbs. Lastly, based on the semantic contribution/features of prepositions, they can be classified.
Volume 8, Issue 1 (4-2008)
Abstract
In this research , the effect of Iran’s government’s expenditures on private sector’s investment during the period between 1971 to 2005 has been investigated . The results of the Cointegration vectors derived from the johansen method indicates that government investment expenditures have complimentary effects on the private investment expenditures while the government consumption expenditures have competing effects
Volume 8, Issue 2 (7-2008)
Abstract
Iran plans to export natural gas (NG) to Western Europe using a system of pipelines running through Iran, Turkey, and Western Europe. International gas pricing is usually undertaken through negotiations between buyers and sellers on a bilateral basis. Currently, Russia is the only exporter of gas from the Former Soviet region. So, Russia competes strongly with Iran to export NG to Western Europe.
This paper develops a bargaining model to study natural gas pricing and analyze competition between Iran and Russia as gas suppliers to Western Europe. In this model, it is assumed that NG pricing is usually linked to the prices of alternative fuels as competing energy sources. Therefore, in light of previous evidence, it is reasonable to consider that there is a
long-run relationship between NG price and price of alternative fuels. Initially, a regression model is specified to investigate unlagged relationship among variables. This relationship is estimated using the Johansen cointegration technique and then we forecast margins of the Iranian NG price. Finally, a VECM model is identified and used to forecast the lower and upper bounds of future NG price.
Volume 8, Issue 2 (6-2020)
Abstract
Aims: The present study aims to shed light on the effects of different treatments of gibberellic, salicylic and ascorbic acid on improving germination parameters of Zygophyllum atriplicoides under in vitro drought stress condition.
Materials & Methods: The experiment was conducted in a factorial in a completely randomized design. Five levels of drought stress (0, -0.3, -0.6, -0.9, and -1.2Mpa) with and without priming treatments were used in this experiment. The priming treatments included three levels of salicylic acid (100, 200, and 300mg/L), three levels of gibberellic acid (125, 250, and 500ppm), three levels of ascorbic acid (100, 200, and 300mg/L) and simultaneously distilled water were used as control. Each level of treatments had 4 replications and the total number of replications was 200. The studied traits included germination rate, germination percentage, rootlet length, shoot length, seedling length, and seed vigor index.
Findings: According to the results, priming improved germination rate, germination percentage, rootlet length, shoot length, seedling length, and seed vigor index. Among all priming levels, 250ppm gibberellic acid accounted for the highest effect on germination traits of this species under all drought stress conditions.
Conclusion: priming with gibberellic acid had significantly more impact on germination parameters under drought stress. Hence, this method serves as a promising step to improve the germination parameters of this plant.
Volume 9, Issue 1 (1-2009)
Abstract
In this paper a macroeconomic approach is derived to develop a long run electricity demand model to analyze the main factors affecting electricity demand in the Islamic Republic of Iran. According to the definition of a demand function, electricity demand, in general, is determined by some main factors including gross domestic product (GDP), prices, etc. This paper, by analyzing the specific political and economical conditions in the Iran, introduces electricity intensity and a dummy variable WAR into the electricity demand forecasting model. A binary dummy variable, WAR is applied to correct the model (between the years 1980-1988 during the Iran and Iraq war). In this study, two popular econometric techniques namely unit root test and cointegration model is derived for modeling the electricity demand. Cointegration is established between kWh and, respectively, GDP, electricity price, electricity intensity, and WAR as a dummy variable. The results show that although GDP is still the most important factor for electricity demand, electricity demand is negatively related to efficiency improvement and tariffs in Iran.
Volume 9, Issue 1 (4-2009)
Abstract
This paper investigates the determinants of private investment in Iran over the period of
1382-2004. First, the variables are tested for unit root and then the long run private investment equation is estimated using cointegration technique. The variables considered in the model include GDP, government investment, inflation, infrastructure and institutions such as rules and regulations, property rights, corruption and social Securities.
The results indicate that GDP and infrastructure positively affect private investment while the institution factors such as rules and regulations, property rights, social securities and corruptions negatively affect private investment.
Volume 9, Issue 1 (1-2020)
Abstract
Aims: In the present study, the morphometric and meristic traits of Alburnus chalcoides from the Chelvand (Astara), Khalesara (Talesh), Siahdarvishan (Anzali wetland), Sefid and Pol (Guilan Province), Tonekabon and Babol (Mazandaran Province) rivers were compared.
Materials & Methods: For this purpose, a total of 170 specimens were collected from above-mentioned rivers. In the Lab some 39 morphometric and 10 meristic traits were recorded. All data were analyzed by using One-Way ANOVA, Duncan test, Kruskal-Wallis, principal component analysis (PCA), canonical variate analysis (CVA) and cluster analysis.
Finding: The results showed a significant difference in 36 morphometric and five meristic traits among the studied populations. CVA result separated the studied populations in the southern parts of the Caspian Sea basin. Also, cluster analysis placed the Chelvand River population in a distinct clade.
Conclusion: This study showed high diversity of morphometric compared to meristic traits and better performance of these traits in population's distinction.
Volume 9, Issue 2 (6-2017)
Abstract
Coin is a written, valid and full content document that its investigation is essential from various aspects. Accordingly, the coins are one of the most important research tools and methods for recognition the history, culture and civilization that help to introduce and analyze the social, cultural, economic and political situations of each course.
In this study, the results of elemental analysis of 6 one Drachma coins of Khosrow II and 11 silver coins belong to Septimius and his wife Julia Domana by XRF method have been reported.
These results show a drop in purity percentage of silver in the Khosrow II coins and weight reduction in Septimius and his wife Julia Domana silver coins. The cause of these fluctuations must be searched in the beginning of 5 year war of Iran and Rome which led to defeat of the Persians and recapturing Cteisphon by Romans at the end of the year 197 AD.. The cause of these fluctuations must be searched in the beginning of 5 year war of Iran and Rome which led to defeat of the Persians and recapturing Cteisphon by Romans at the end of the year 197 AD
Parthian Empire ,Khosrow II ,Silver Coins ,XRF Method
Volume 9, Issue 3 (10-2009)
Abstract
Understanding the different aspects of the relationship between energy consumption and economic growth can outstandingly help to adopt appropriate policies in energy sector. Structural breaks and regime shifts may affect the above relationship. Therefore, it is important to consider structural breaks and regime shifts in empirical analysis.
In this paper, the relationship between energy consumption and economic growth is analyzed in the presence of structural breaks. The empirical models are specified and estimated using Iran's time series data during 1967- 2005 period. To this end, unit root tests proposed by Zivot and Andrews (1992) are first used to identify structural breaks found endogenously and then the Gregory-Hansen cointegration test, which allows strctural breaks in time series, is employed to estimate the long-run relationship between energy consumption and economic growth. The results show that in the long run, there is a positive and significant relationship between energy consumption and economic growth in Iran.
Volume 9, Issue 3 (8-2018)
Abstract
Eric Landowski; the postgreimassien semiotician, defines his semiotic and interactive model as the program of discipline, conviction, coincidence and adjustment, according to the principles of "rule", "intentionality", "luck" and " sensible" paradigm respectively. Naturally, this model can be encompassed in the social domain in which we encounter with the interactive practices of subjects.
If we accept that basically educational activity is defined on the basis of the interaction between the three different factors: the subject of the educator, the subject of the learner, and the object and method on which the training is based, we can study and explore the diversity and the difference for the training practices with this model.
In the present article we tried to examine carefully this model and the characteristics of each of these semiotic and interactive systems. We will present another model, the virtuous and vices one in order to read the possible interactions between the educator's actor and the educator actor in a social welfare class to say the classroom.
Accordingly, different educational methos of analysis and fundamental philosophy upon which each of them has been founded will be explored and examined by introducing various educational goals and patterns.
Volume 9, Issue 3 (8-2020)
Abstract
The effect of different levels of fucoidan on fatty acid profile and growth of rainbow trout were investigated. 150 fish (average weight 18.84 ± 70.7) were distributed in 15 fiberglass tanks (100 liters) and fed for 8 weeks at different levels (0 (control), 0.1%, 0.5%, 1% and 2% fucoidan). The results showed that the treatment with the highest amount of fucoidan had the highest final weight, specific growth rate and body weight gain, and there was a significant difference between treatments (p <0.05). There was no significant difference between feed conversion ratio and different treatments (p> 0.05). The difference between EPA, DHA, SFA, MUFA, n-3, HUFA and ratio of n-3 to n-6 was not significant (p >0.05), while PUFA and Arachidonic acid significantly different between treatments (p <0.05) and the highest value was observed in in treatment 2 and 1% respectively. Based on the results of this study, it can be concluded that this type of Polysaccharide at high doses (1 and 2% of fucoidan) can improve the growth performance and maintain the quality of muscle fatty acids.
Arsalan Khalili-Moghadam, Hamzeh Oraie,
Volume 9, Issue 3 (9-2023)
Abstract
Cataglyphis nodus (Brullé) is one of the fairly known ants of Iran. Here, we present new data on a morphotype from Chaharmahal-o Bakhtiari province (Cheri - Mavarz) closely related to C. nodus. The examined specimens were morphologically had very similar characters with the original description of C. nodus. In order to explore the phylogenetic position of Iranian specimens, a fragment of the mitochondrial Cytochrome c oxidase subunit 1 gene (COI) was used. The Iranian specimens belong to a clade containing C. holgerseni Collingwood & Agosti; C. niger (André), C. nodus and C. savignyi (Dufour). Surprisingly, it was clustered with C. holgerseni, indicating existence of a possibly undescribed species. The final taxonomic conclusion and description of the possible new species postponed until examination of the type specimens of both C. nodus and C. holgerseni.
Jaiswal Deepa, Shiva Shankar, Devadoss Kumar, Karuthapandi Madasamy, Shrikant Jadhav, Rehanuma Sulthana,
Volume 9, Issue 3 (9-2023)
Abstract
The present study is on the morphology and molecular data of the genus Dineutus MacLeay, were collected from the Eastern Ghats mountains in Odisha, Andhra Pradesh, Telangana, Tamil Nadu states located in the eastern Ghats of India. The morphological identification was based on elytral spines, setation on paramere and structure of the median lobe. Molecular characterization was based on the mitochondrial cytochrome oxidase subunit I (COI) and 16s ribosomal RNA gene. Species identified as being D. indicus, D. spinosus, and D. unidentatus. Phylogenetic trees were constructed for both genes, and the COI fragment shows raw genetic distance between 10–12% among the three species of D. indicus, D. spinosus and D. unidentatus, whereas 16s gene shows a divergence of 4–5%. The present study contributes five novel mitochondrial COI and five ribosomal RNA sequences for D. spinosus and D. unidentatus for the first time from India.
Volume 9, Issue 4 (3-2010)
Abstract
There are many factors affecting economic growth. Based on the literature, the effects of these factors such as higher education are mainly examined using endogenous economic growth theories. Various theoretical models are used to estimate the relation among variables affecting economic growth.
This paper investigates the effects of higher education human capital on the economic growth in Iran using the endogenous growth models. The specified model includes human capital, physical investment and foreign debt which are identified as the main determinants of economic growth in Iran. Two dummy variables are included in the model in order to represent the effects of Islamic revolution and imposed war. The Johnson five steps approach is employed to estimate the empirical model.
The results confirm that higher education human capital has a relatively large and statistically significant effect on the economic growth in Iran. It is found that the growth elasticity of higher education human capital is larger than the growth impact of physical capital investment. So, in order to obtain a high rate of economic growth in the country, investment in higher education human capital must be increased. Moreover, based on the findings, it is recommended that the investment should be made using domestic saving instead of financing abroad.
Volume 10, Issue 1 (1-2021)
Abstract
Polysaccharides possess diverse biological properties due to complexity of chemical structure and heterogeneity of molecular weight which could be improved through engineering approaches and chemical modifications. The objective of the present study was to determine the antioxidant and anti-diabetic effects of marine and land originated polysaccharides and explore the correlation between molecular weight and biological activities. Hence, four polysaccharides with varying size distribution and average molecular weight including fucoidan and alginate from brown seaweed Padina pavonica and polysaccharides from Flixweed (Descurainia sophia) and Fennel (Foeniculum vulgare) were subjected to hydrolysis in three levels using 0.05N hydrochloric acid at 100 C for 5, 10 and 20 minutes. The average molecular weight ranged between 2059.5-3781.8 in fucoidan, 1774.4-2324.9 in alginate, 720.4-1373.8 in Flixweed and 5752.6-14077.5 × 103 g/mol in Fennel. The relation between molecular weight reduction and α-amylase activity inhibition was decreasing in fucoidan (52.1-32.8%) and alginate (67.6-32.2%) and increasing in Fennel (61.2-45.0%). Reduction of molecular weight enhanced the DPPH radical scavenging and ferric reducing power of fucoidan (47.9-27.8%; 0.47-0.37 Abs) and Fennel (39.0-12.7%; 0.34-0.16 Abs). The effect of molecular weight reduction was limited on antioxidant activities of alginate and Flixweed. Overall, the findings of the current study revealed that molecular weight is a determinant factor affecting bioactivities of the tested polysaccharides and thus their applications as ingredients having anti-diabetic and antioxidant functions could be possible in their native and/or hydrolyzed forms.
Volume 10, Issue 1 (12-2022)
Abstract
Aim Molecular phylogenetic relationship and morphological characteristics of the reef margin blenny,
Entomacrodus striatus was undertaken in order to clarify its taxonomic status in the Iranian coasts of the Gulf of Oman.
Entomacrodus striatus is distributed in the Indo-Pacific realm.
Materials and Methods This study is based on four samples taken from Chabahar in the northern Gulf of Oman, during February 2019.
The mt-DNA marker (COI) of one
E. striatus from the present study and 15
Entomacrodus species was used for reverification over traditional morpho-taxonomy.
Findings Bayesian Inference (BI) and Maximum Likelihood (ML) approaches result in five clades including, clade A (
Entomacrodus corneliae,
E. chiostictus, E. nigricans, E. sealei, E. cymatobiotus, E. caudofasciatus), clade B (
E. striatus, E. niuafoouensis, E. epalzeocheilos, E. randalli), clade C (
E. macrospilus, E. thalassinus), clade D (
E. vermiculatus, E. decussatus), and clade E (
E. stellifer). The morphological characters of the examined materials were in the range of its original description, except in having a pair of pores in one position of the preopercular series of sensory pores, which may be hypothesized a population variation associated with geographical distribution. The sexual dimorphism is distinguishable especially in color pattern of specimens which the blotches and bands on the male bodies are more bolded than the female ones.
Conclusion The inferred ML and BI trees resulted a homological clustering of taxa that are grouped according to their morphological characteristics and were agree with molecular reconstructions based on nuclear markers.
Volume 10, Issue 4 (1-2011)
Abstract
This paper presents a new method called vespiary regular hexagonal (VRH) model to calculate parasitic capacitance between conductor wire filaments of one turn of a coil and between conductor wires filament and liner and also total capacitance of n-turns having single-layers, multi-conductor wire filaments of the helix magneto cumulative generator (MCG) coil. The presented method is an analytical method and based on the geometrical structure of single-layer multi-conductor wire filaments with circular cross-section form in a turn of MCG coil. In this method, wire filaments of the MCG coil are divided into many very small similar elementary cells. In this structure, an equilateral lozenge shaped basic cell with two trapezium shaped regions is considered between the two adjacent conductor wire filaments in each turn of the MCG coil. This method can be applied to calculate stray capacitance of n-turns of coil with multi conductor wire filaments having the circular cross-sections and wires filament in each turn of the generator coil having wounded around linear and uniform in multi-layers in the hollow circular form and with a certain distance from the surface of the cylindrical metal liner which is placed axially in the center of the coil. Also it is seen that by the progress of the explosion and volume extension of liner and decrease of the number of MCG coil turns up to the second end turn, the total capacitance of generator increases and when it remains only one turn in the circuit, a descending decrease in total capacitance of the generator occurs.
