Showing 29 results for jami
Volume 0, Issue 0 (Articles accepted at the time of publication 2023)
Abstract
Children's poetry is a suitable and effective platform for moral and social development and increasing their mental and cognitive abilities. In this respect and due to the importance of the content of children's literary works in the education system, it is necessary to understand children's poetry from different angles. People's culture is a wide collection of elements related to the material and spiritual life of the people of a land, which preservation and transmission to the children's audience and strengthening its place in the thoughts of composers of this field is the reason for the influence and creative productivity of this rich culture. Among them, material traditions are people's daily issues such as tools, food, clothing and vehicles. The present essay examines the reflection of these material traditions in Shaaban Nejad's epic poems. review method; Analytical-descriptive based on library sources. The results show; Shaaban Nejad's poetry as a main source in research; It has a clear and conscious link with people's culture. By using the material examples of people's culture, he connects the past and the present together, with the help of narration, rhythm and song, wide range of vocabulary, imagery and literary works, he displays his ancient roots for the child of the modern world and flourishes and The stability of children's and adolescent literature in Persian language.
Volume 1, Issue 2 (Fall & Winter 2025)
Abstract
The Economic Cooperation Organization (ECO) is the result of the political will of its three founding countries for economic convergence, which had previously symbolized in its predecessor, the Regional Cooperation for Development (RCD). The desire of Iran and two other neighbouring countries to fill the void of past regional cooperation led to the revival of RCD in ECO in 1984. The collapse of the Soviet :union: and the independence of the Muslim Republics led to expansion of the organization. During 1992-96, ECO realized the main areas and priorities of cooperation and established several regional institutions and since 2006 entered the implementation phase of its agreements and strategies. This research seeks to analyse the activities of ECO to achieve the set objectives and evaluate the degree of their realization.. The main question of the essay is whether ECO has been able to realize the goals of regional integration? What has been the role and influence of Iran in the successes and failures of ECO? And can we still hope for the success of this organization? The research hypothesis is that ECO has not achieved much success in the implementation of a large number of agreements and regional plans, and its activities have not had a tangible impact on regional development and prosperity. In the meantime, Iran has played a large role in the failure of ECO. The research method is descriptive-analytical, and the data has been collected and analysed by referring to ECO documents, library sources and field experiences.
Volume 2, Issue 2 (6-2013)
Abstract
The calling behavior of virgin carob moth females, Ectomyelois ceratoniae (Zeller) (Lep.: Pyralidae) was evaluated under two different thermal regimes, cycling and constant temperatures under laboratory condition. The period of calling activity under cycling temperature was prolonged and the total period of calling activity of an individual female was increased. Although moths maintained under cycling temperature started calling later for the first time significantly in the scotophase than those maintained at 25 °C, but the calling activity at cycling temperature was higher than at 25 °C. At two temperature regimes, the mean onset time of calling (MOTC) advanced from about 441 to 189.5th min after the onset of the scotophase, and the mean time spent calling (MTSC) increased by > 120 min over the eight days. MTSC and MOTC for cycling thermal regime were 96.8 ± 6.5 and 275.9 ± 9.3 min respectively. We assumed that the extension of the calling period under cycling temperature might be due to potential similarities of the temperature regime to natural thermal fluctuations which could lead to an increased proportion of females mated; apart from its importance in efficacy of sex pheromone extraction under laboratory conditions.
Volume 2, Issue 2 (4-2016)
Abstract
Background: Pseudomonas aeruginosa is considered an opportunistic pathogen; several reports indicate that the organism can also cause infections in healthy hosts. Four effector proteins have been described in P. aeruginosa: exoU, exoS, exoT, and exoY. These genes that are translated into protein products related to type III secretion systems. Materials and Methods: A total of 134 samples were isolated, and P. aeruginosa was identified using biochemical tests. Bacterial genomic DNA was extracted, and the presence of the exoSand exoUgenes were detected by PCR. Biofilms were formed by culturing P. aeruginosaon glass slides in rich medium. Results: The exoU(73%), exoS (62%) genes were detected from infections caused by P. aeruginosa in urinary tract infection patients. Among the 119 strains isolated from patients with urinary tract infections. Conclusion: An improved understanding of virulence genes and biofilm formation in P.aeruginosa may facilitate the future development of novel vaccines and drug treatments.
Volume 2, Issue 3 (9-2014)
Abstract
We investigated the response of Sea Buckthorn to drought in a nursery experiment that has been studied for the first time in the world for Iranian Sea Buckthorn. Biomass and physiological differences in response to drought were compared between four Elaeagnus rhamnoides seedlings inhabited in Qazvin Province origin seeds of Iran. The experimental design included four water regimes including 2, 4, 8 and 12 days irrigation and three blocks. Water Use Efficiency (WUE), Relative Water Content (RWC), Water Potential (WP), Water Saturation Deficit (WSD), Root and shoot weight of fresh leaves were determined at the end of the watering treatment (four months). We found that drought tolerance was highly related to the plant physiology in E. rhamnoides. With the extension of drought stress from 2 to 12 days, E. rhamnoides seedlings WUE was increased; between one and second treatment, also between third and fourth treatments we observed significant difference. RWC gradually was declined with decreasing water supplies. WP was decreased, while drought was increased from first to last treatment. WSD gradually was increased by accelerating drought in all treatments. WSD values did not differ significantly between treatments three and four. Significant differences at 0.05 levels were not observed between 8 and 12 days-irrigated in both of R and S weight, but in all treatments was decreased toward drought. Our results provided new clue and new insight to study the drought-tolerant mechanism for the study species.
Volume 3, Issue 2 (9-2013)
Abstract
Managerial researches emphasize an organizational contingency elements rule at improving the performance. Although, few theorical and empirical researches were implemented upon the influencing elements at organizational performance.
This paper is an effort to fill gaps of corresponding issue. For this, exploration and searching the literature and expert interviews (DELPHI) resulted in formulation of 14 contingent elements which impact the military organization performance. Then, an importance- performance analysis technique based on experts needs and expectations was used to prioritize the elements performance. This technique also presents weakness and strength of influencing performance elements.
In this paper, to improve the validity and practical aspects of importance- performance analysis technique, experts and personnel of mentioned organization were interviewed.
Then, two quantitative and qualitative techniques multiple regression and DEMATEL final values as integration of implicit and explicit importance respectively are used to extract the importance rates.
Finally, the performance rate extracted through interviews based on likert values as well as importance rate applied to build the importance- performance matrix in four quadrants which based on two axes (importance, performance) to analysis the feature of located elements in each quadrant.
Volume 5, Issue 1 (9-2013)
Abstract
Nowadays, ambivalenceinclude differentelemdnts of human’s life and its spreading has been a social issue. For discovering the origin of for ementionedissue , it is necessary to investigate its historical background. As ghajar are has been exposed to many challenges of traditional and modern values , it can be producer of all types of ambivalences;therefore this issue has been investigated from the point of view of English travel writers who have had association with people and specilly with ghajarcouqp at that time. the population (statistical society) of this research includes all of the itineries written by Englishmen who have traveled to Iran in Ghajar career. That from among them 34 itineraries have been selected as sample (through purposeful sampling) investigating of all types of sociological ambivalence and psychological ambivalence has been done through Robert merton, typological approach in sociological ambivalence theory , also these typs have been investigated and classified by using historical investigation techniques and content analysis . The results show that: from among 6 kinds of sociological and psychological ambivalence, all kinds except 3 type have been refered to in mentioned intineration in ghajar; are highest amount of sociological ambivalence is dedicated to type 5 (alteraction between cultural structure and social structure ) that has been manifested in “aberrant behavior” (psychological ambivalence) in the next level, the 6 type of sociological ambivalence (different collections of cultural values) has been mostly dedicated to imitation of court from western lifestyle . The mentioned ambivalences have been mostly observed among “Iranian base and in “cultural –political field “ and in “naseredin shah” and then “fathali shah” ghajarera. Regarding content analysis of itineraries ,the final analysis of shows the effect of specific feature of social – cultural structure of ghajar are on the spreading of ambivalence.
Volume 5, Issue 3 (Summer 2023)
Abstract
Introduction
Spatial court in the city, management, distribution and distribution of space services and urban possibilities, special attention e-mail. In the discussion of equality and equality, none of the urban groups and classes of residents have a tendency to oppose each other and they provide equal treatment for everyone, regardless of social and economic status, for access to general urban services. For this reason, this topic, as it prevents the accumulation of possibilities and urban services in one area, the polarization of the city space and social inequalities, it makes access to the possibilities in the city for everyone. In accordance with this, the present research is aimed at assessing the spatial justice in the distribution of services and urban possibilities in the palaces of eight Shahr, Tehran.
Methodology
The research method is descriptive-analytical and based on library and documentation methods. The data used in this research are the data that have been extracted from urban areas. In order to analyze the information, in the first stage, using the entropy scale, balance (equality) or disequilibrium (inequality), each of the uses has been analyzed and then proceeded to rank the 13 palaces, regions. And the level of utilization of urban services and possibilities using the Cocoso model has been used for ranking the regions
Result and discussion
Since the globalization of cities and the urbanization of the world is the most prominent feature of the twenty-first century. Especially fortunately, the growth of urbanization in the majority of cities in the developing countries is more rapid. Various (housing, traffic, pollution, urban identity, commercial land, unsustainable land use, etc.) have been faced.
Land, as a limited, scarce and non-renewable commodity, in the face of rapid urban development and increasing collective demand, is transformed into an expensive and profitable commodity, as a result of which it is considered as a means of commerce for the purpose of securing profit and general welfare and improving the standard of living. Special groups are declared and cause many social, economic and environmental problems.
Based on these problems and difficulties of the current urbanization in this research with a radical and critical approach based on theories related to justice and spatial equality, after identifying and analyzing urban land use conditions, types and programs derived from them, the percentage of their realization. Reasons and forces influencing their realization or non-realization, as well as the space produced, the positive or negative spatial-spatial effects resulting from them. Perhaps the most important concern that prompted me to address this matter is the chaotic and confused situation in the suburbs of the three districts and the palaces of the third district of the eight city of Tehran in recent years.
The conditions are not improving, they are getting worse day by day. The situation of overcrowding and non-distribution of inappropriate uses, which have arisen due to major reasons, have led this region to a state of chaos. The urban land has been transformed into a bubble with the expansion of the stock market, the dimensions of which are getting bigger and bigger every day. Since the use of urban land is the core of urban planning, based on this assumption, it is possible to understand the root problems and spatial problems of the current urban area.
Conclusion
The results obtained indicate the imbalance in the distribution of spatial services and urban possibilities. Based on the results of the entropy method, cultural quality with a weight of 0.463 has won the first rank. Sports quality with a weight of 0.255 has won the second rank and green space quality with a weight of 0.153 has won the third rank. According to the Cocoso model and according to the results, Kerman district has won the first rank, Fadak has won the second rank and Wahidiya has won the third rank. Therefore, the eastern region and its palaces, which are located in District 1 and part of District Two, are in a better condition than the western region, where the palaces of District Three are located.
Volume 9, Issue 1 (Winter 2020)
Abstract
Aims: In the present study, a three-dimensional numerical hydrodynamic model with the capability to simulate the diffusion of chemical pollutants released in marine basins was developed and used as a case study to simulate the diffusion of phosphate released by fish culture cages located in the Sisangan marine basin.
Materials & Methods: The equations of the model including momentum equations, continuity of mass equation, temperature, salinity, representative of vertical velocity, the tendency of bottom pressure equations and an extra three-dimensional advection-diffusion equation for simulation of pollutant’s diffusion rewritten in the earth’s spherical coordinates with a vertical Sigma coordinate were solved using finite difference method. To provide the open boundary conditions, the model was used for simulation of wind driven currents in the Caspian Sea from 20 October 2018 to 20 May 2019. For the application of wind field and real geometric condition, it was used the time series of wind fields supplied by ECMWF reanalysis dataset and GEBCO bathymetry with 0.125 degrees resolution and 15 seconds of geographical resolution, respectively.
Findings: Considering the concentration of 17ppb for the phosphate as a concentration of pollutant in the source of the pollution in the location of the fish culture cages, wind induced currents and the diffusion of the phosphate were simulated for 8 months in both horizontal and vertical directions. The results of the simulations were demonstrated and analyzed within the framework of the horizontal surface current, distribution of the phosphate’s concentration in both horizontal and a vertical latitude-depth cross section.
Conclusion: The phosphate’s diffusion is affected by the wind induced currents and after 8 months, it could be extended to the distance of 11, 8.5, 9.5, and 5.7 kilometers far from the cages in eastern, western, southern, and northern directions, respectively. With the generation of vertical velocity and the turbulence effects in the upper layers, phosphate might be diffused in the vertical direction up to 400m depth, as well.
Volume 10, Issue 1 (3-2024)
Abstract
Andreimyrme substriolata (Chen, 1957) and Odontomutilla fletcheri Lelej, Terine & Girish Kumar, 2020 (Hymenoptera, Mutillidae) are newly reported from India. O. fletcheri was only recorded from Sri Lanka till now & A. substriolata was only known from various Southeast Asian countries (China, Taiwan, Indonesia, Japan, Laos, Malaysia, Thailand and Vietnam), in the present study these species are discovered from India which pronounce the geographical affinities of India with Sri Lanka and Southeast Asian countries and vice versa. Diagnosis, figures, distribution maps and remarks of these species are provided.
Volume 11, Issue 1 (3-2025)
Abstract
The goblin spider Orchestina manicata Simon, 1893 (Araneae: Oonopidae) has remained taxonomically unrevised and has not been phylogenetically placed until now. In this study, O. manicata is redescribed based on newly collected specimens from Sri Lanka. The habitus and genital morphology of both males and females are illustrated and described, with photographs provided for the first time. Orchestina manicata is recognised by the embolus which has a triangular bifid tip and a swollen palpal tibia. The abdomen in males and females is rounded. Through a phylogenetic analysis of 51 morphological characters, combined with molecular data from two target genes (28S, 18S), we present the first hypothesis regarding the phylogenetic placement of this species within the genus.
Volume 13, Issue 3 (1-2023)
Abstract
Betulin is a pentacyclic lupane-type
triterpene, mainly obtained from
Betula species plants with a variety of biological actions such as anti-HIV and anticancer properties. This study aimed to enhance the production of betulin in cultures of
Betula litwinowii calli under the influence of concentrations and duration time of elicitors and precursors. Collected leaves from Sangdeh habitat in summer, were cultured in WPM medium containing 2,4-D and BAP hormones. Four month calli were sub-cultured in medium containing elicitors such as salicylic acid, chlorocholine chloride and cobalt chloride and precursors such as sucrose, vitamin and glucose. . Calli were harvested from new culture media after two, three and four weeks and their wet and dry weights were calculated. Data analysis was performed based on two-factor factorial experiment (the first factor, elicitors and precursors each in four levels and the second factor, time with three levels) in a completely randomized design with three replications with SPSS software. Duncan's multiple range test were performed to compare the mean (p≤0.01). The results showed that two week elicitation with chlorocholine chloride (1.5 mg/l for one week) was the best with a more than 3-fold increasing in betulin induction compared to the control treatment (0.068 mg / g). The use of vitamin precursor (ten-fold the normal amount in WPM culture medium) for three weeks, causes the highest increase in betulin induction compared to the control (0.1 mg / g, respectively). In general, in the present study, this treatment is introduced as the best.
M. Shafieefar, M. Adjami, S.a.a. Salehi Neyshabouri,
Volume 14, Issue 1 (6-2014)
Abstract
Abstract: The two main characteristics of a porous bed are the bed material diameter – representing its coarseness - and the porosity which represents its permeability. In this paper the effect of bed permeability on the average structure of flow turbulence is investigated. Flow is modeled using an innovativecontinuum approach based on Volume Averaged Navier-Stokes Equations in several different channel bed porosities. Results of four different simulations with various porosities are presented. Bed permeability can be represented by the permeability Reynolds number, Rek, which is the ratio of effective diameter of porosity and the length scale of eddies near the bed. The Reynolds permeability number (Rek) is the best expression for the bed permeability quantity. In small Rekthe bed acts as a solid/rigid boundary and in large Rek, the bed will behave as a high permeable boundary with negligible viscosity effects. Under these conditions, the turbulence eddies along the flow are rarely observable. The reasons can be due to: 1) the mechanism of free turbulence transfer through permeable layer and/or 2) a considerable decrease in the average shear stress due to no wall-blocking and low-viscosity effects. The dominant characteristic of turbulence near a high permeable bed is relatively large eddy structures, probably originating from so-called Kelvin-Helmholtz instabilities. Suchflow pattern with large vortexes leads to high momentum exchange between the free channel flow and the two-phase flow in porous media below permeable bed. This process also increases the friction between flow and the substrate and therefore will result in moving the Logarithmic-low region slightly downward. In addition, it is observed that the log-low cur near a high permeable bed is 4% steeper than in solid and rough bed.
Volume 16, Issue 4 (winter 2016 2016)
Abstract
The government of Iran has faced with budget deficits during 1979 – 2010, which has been financed mainly through money creation. Theoretically, the impacts of budget deficit and inflationary tax on macroeconomy are very controversial, so that both decrease and increase in consumption, investment, net exports and total expenditure have been supported by empirical researches. Using structural cointegrating vector autoregressive, this paper investigates the impacts of inflationary finance on the demand side of Iran’s economy during mentioned period. Budget deficit is defined as the difference between operating budget deficit (minus net operating balance) and capital balance surplus, or net lending (net acquisition of nonfinancial assets). The results show that both operating budget deficit and net lending have positive impacts on consumption, investment and net imports in the short run. So changes in the demand side have not necessarily same orientation with increase or decrease in budget deficits, but the source of change in budget deficit determines its effects. Reducing budget deficits through positive shock to net lending and a policy of increasing operating budget deficit have similar effects. Furthermore, the results show that the operating budget deficit has no effect on demand components in the long run. The complementarity of inflationary tax and financial repression is confirmed in both short run and long run. In addition, the results indicate that an increase in operating budget deficit and/or net lending induce more inflationary tax and financial repression. Although the budget deficit has no effect on demand side in the long run, but its two outcomes -inflationary tax and financial repression- have opposite effects on the consumption, investment and net imports in both short run and long run.
Volume 17, Issue 3 (5-2015)
Abstract
SCID is a lethal genetic autosomal recessive disorder that has been observed in humans, dogs, mice, and horses. Affected animals are incapable of generating specific antigens for immune responses needed to protect them from infectious diseases. The frequency of affected recessive allele varies in different regions so that the outcome of normal breeding with carriers of recessive alleles is differently distributed. Little information is available for SCID carriers in Iranian horses to prevent carriers breeding. In this study, the occurrence of the SCID alleles was tested in representative samples of Persian Arabian (or Asil) horses. Blood samples were collected from 244 Arabian horses in eight provinces of Iran. The ARMS-PCRs were used for the first time to identify SCID carriers, based on three distinguishing primer pairs. Each sample was used in two separate PCRs with a common forward primer. The two reverse primers differed in their 3′ end: one reverse primer could pick the wild-type allele while the other could pick the mutant allele with a 3′ end deletion. An internal control (HMS02 locus) was used in both reactions to verify whether the amplifications worked correctly. The results showed a mutated allele frequency of 0.8% in the Arabian horse population of Iran. This is the first report identifying SCID carriers’ frequency among Arabian horse population in Iran.
A.r. Habibi, E. jami,
Volume 17, Issue 6 (12-2017)
Abstract
Volume 17, Issue 10 (1-2018)
Abstract
In this paper, optimal trajectories of soft landing on the Moon are designed based on different landing strategies. For this purpose, the problem of soft landing is defined as an optimal control problem to minimize fuel consumption and solved by a combinational direct method. The used solution method in this paper is a combination of direct collocation method, nonlinear programming, differential flatness and B-spline curves. In this method, by using differential flatness, dynamic equations of landing are expressed by the minimum number of state variables in the minimum dimensional space. Also, state variables are approximated by B-spline curves, and control points of these curves are considered as optimization variables of the nonlinear programming problem. By simultaneously using of differential flatness and B-spline curves, the number of variables and constraints of the optimal control problem decrease significantly and the problem is solved with high accuracy and speed. In the paper, three different strategies for soft landing on the Moon are investigated. These strategies are defined based on direct or indirect landing from the parking orbit and separation of horizontal braking and vertical descent phases. According to achieved optimal trajectories, by indirect landing from an intermediate orbit, the space vehicle can be landed on the Moon with the minimum fuel consumption. Also, by separation of horizontal braking and vertical descent phases, a more applicable landing trajectory can be achieved.
Volume 17, Issue 69 (1-2021)
Abstract
The main question of this article is whether myth can have an unconscious presence in the process of forming a literary form; to answer this question, first, with a descriptive-analytical approach, the two layers of mythological beliefs about the relationship between water and rain, fertility and blessing with the king's main function in a political-cultural system are explained. The findings of this article show that the belief in the relationship between the king and the set of beliefs related to water and rain has been an important and effective source in the subconscious formation of the most common and frequent system in Persian poetry. This article also examines the relationship between myth and literature and examines the corresponding relationship between the concept of the king and water and rain and fertility and analyzes the characteristics of the mythical king, examines the dimensions of the development of a recurring image stereotype.
Volume 17, Issue 69 (1-2021)
Abstract
The main question of this article is whether myth can have an unconscious presence in the process of forming a literary form; to answer this question, first, with a descriptive-analytical approach, the two layers of mythological beliefs about the relationship between water and rain, fertility and blessing with the king's main function in a political-cultural system are explained. The findings of this article show that the belief in the relationship between the king and the set of beliefs related to water and rain has been an important and effective source in the subconscious formation of the most common and frequent system in Persian poetry. This article also examines the relationship between myth and literature and examines the corresponding relationship between the concept of the king and water and rain and fertility and analyzes the characteristics of the mythical king, examines the dimensions of the development of a recurring image stereotype.
Volume 20, Issue 3 (Fall 2016)
Abstract
Globalization process through consolidation of many national economies has shaped global economy and led to a network of world cities. In this context, metropolitan for surviving in such competitive environment will require appropriate infrastructures, capacities, and powers. Accordingly, the measuring position of metropolitan areas is necessary to determine the role of them in the global economy. This paper identifies the impacts of economic globalization on the spatial structure of Tehran and Istanbul metropolitans and also compare the function of these cities in the globalization process. The research method was descriptive-analytical and analyzes were based on secondary data. Findings revealed that in term of economic dimension and foreign investment, Istanbul has favorable condition compared to Tehran. However, the lowest difference was related to Internet penetration. Investigation of spatial structure based on polycentricity and investments in meta-projects indicators showed that there are transformations in the Tehran metropolitan. These changes are higher than and more multidimensional in the Istanbul. Finally, it can be argued that the position of Istanbul in the global economy is better than Tehran. Istanbul metropolitan based on necessities of the global economy, inevitably, experiences spatial restructuring.