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Showing 14 results for Khayat


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

Cet article examine l'approche de la mise en œuvre des compétences de compréhension de l'écrit dans les cours de langue française en Iran. Les données étudiées dans cette recherche ont été recueillies par le biais de questionnaires, d'entretiens et d'observations en classe. Les objectifs de cette étude sont de comprendre les perspectives et les opinions des apprenants et des enseignants concernant les compétences de compréhension de l'écrit, d'examiner les approches pédagogiques utilisées et d'identifier les obstacles existants dans ce domaine. En conséquence, des suggestions spécifiques pour améliorer l'approche pédagogique de la compréhension de l'écrit sont fournies. Les résultats de cette étude indiquent que les apprenants ont des compréhensions différentes de divers éléments liés à la compréhension de l'écrit, y compris la nécessité de lire rapidement pour accomplir les exercices, de passer du temps pour une compréhension approfondie des textes, etc. De plus, les réponses des enseignants soulignent l'importance de la flexibilité, de l'utilisation de ressources diversifiées et de l'implication active des apprenants. Les résultats obtenus de ces conclusions sont discutés pour l'enseignement de la langue française, mettant en évidence la nécessité de sensibiliser les apprenants et les enseignants à l'importance de la mise en œuvre de stratégies efficaces de compréhension de l'écrit.
 

Volume 5, Issue 4 (winter 2024)
Abstract

The metro not only provides public transportation but also fosters interactions among citizens and contributes to the urban environment. Hence, attention to social interactions and spatial provisions to transform into urban spaces is crucial. The objective of this research is to establish a framework for achieving the quality of life in underground spaces that incorporates a comprehensive expression of placemaking. The research methodology is based on collecting and analyzing textual and documentary data, qualitatively focused on interpretive paradigms. This theoretical article aims to enhance a critical understanding of production and consumption processes within the urban public space. Findings indicate that urban underground spaces, to function as urban areas, need to offer a set of unique qualities aligned with citizens' needs as these spaces extend beyond the defined scope of urban areas. These urban spaces can be examined in the realms of lived space, perceived space, and conceived space by the citizens. In conclusion, in achieving a form of placemaking, the components of daily life, encompassing spatial behaviour, spatial representation, and representational space in alignment with the qualities of underground urban spaces, such as inner space qualities, inter-space qualities and extra-spatial qualities (legibility, inclusiveness, vitality, Accessibility, moderation, providing a variety of services and facilities), significantly shape the landscape of citizens' everyday lives. Identifying these qualities and the interactive dynamics between citizens' daily lives and urban space can lead to the creation of place and the process of placemaking.

Volume 8, Issue 2 (Summer 2018)
Abstract

Introduction The thoughts of Sheikh Ishraq (Shahāb ad-Dīn” Yahya ibn Habash Suhrawardī) have a high status in the Islamic world. These thoughts spread in the Safavid era, so that, more than ever, they became an important and influential category in the Islamic world.  Since the art of architecture is the manifestation of the thoughts and mentalities of the architects and thinkers of each historical period, it can be expected that Suhrawardi’s thoughts are also manifested in the field of architecture. The main question of the research is whether the philosophy of Ishraq has influenced the Esfahani architectural style? And if so, how was this impact on the structure of the buildings of that era? In the following, using the interpretive-historical research method, the analysis of the views of Sheikh Ishraq and its comparative comparison with the architectural works of Esfahan doctrine were discussed. Then, using analytical-descriptive techniques, the correspondences between Suhrawardi’s thoughts and the architectural field of Esfahani style were explained. The data collection method is done by library research and referring to architectural documents.
Conclusion Studies conducted indicate that Esfahani style is significantly in line with the thoughts of Sheikh Ishraq. The various manifestations of light in the architecture of hierarchy, colors and decorations, empty space, the principle of plurality in unity, altar, golden dome, and so on can be considered as the effects of light in the architecture of this era.


Volume 10, Issue 4 (Fall 2022)
Abstract

Aims: This study aimed to determine the adherence to treatment and affecting factors in tuberculosis patients during COVID-19 outbreaks.
Instrument & Methods: This is a mixed-method study with an explanatory sequential design. The first phase was a cross-sectional study on 108 tuberculosis patients. Data were collected with an adherence questionnaire in patients with chronic disease. Descriptive statistics and linear regression tests were used for quantitative data analysis. The second phase was a qualitative study with the conventional content analysis approach. Participants included 12 patients and healthcare providers involved in the directly observed treatment short course program for tuberculosis in related centers to Iranshahr University of Medical Sciences, Southeast of Iran.
Findings: The median scores of treatment adherence were 110.00±35.00, and 48 (44%) of subjects had poor to moderate scores. COVID-19 and non-COVID-19 factors have influenced the adherence to treatment in patients with tuberculosis patients.
Conclusion: A worldwide and unanticipated crisis can negatively affect the control of chronic diseases.  Anxiety and panic over the unknown nature, lack of definitive treatment, and mortality of COVID-19 led to the disruption of the directly observed therapies program by both tuberculosis patients and healthcare providers. Giving part of the tuberculosis management responsibility to the patient and family was not an effective solution during the COVID-19 crisis.
 

Volume 12, Issue 4 (Fall 2024)
Abstract

Aims: Vaginismus disorder is the second most common sexual dysfunction in women, and it is a significant issue in the lives of those affected. This disorder has unfortunate and destructive consequences for the individual’s health, the family unit, and the couple’s intimacy. This study aimed to compare vaginismus-specific schema therapy with conventional schema therapy in terms of their effects on sexual self-assertiveness and self-esteem in women with vaginismus disorder.
Materials & Methods: This quasi-experimental research employed a pre-test, post-test, and follow-up design, including a control group. The statistical population consisted of women with vaginismus disorder who were referred to the obstetrics and gynecology clinic of Payambaran Hospital in Tehran, Iran, in 2021, of whom 45 individuals were selected using a purposive sampling method, and were randomly assigned to three groups through a simple lottery method (n=15 per group). The Persian version of Halbert’s Sexual Self-Assertiveness Questionnaire and the Female Sexual Self-Esteem Inventory (SSEI-W) developed by Zeanah and Schwarz were used. The two experimental groups received treatment in ten sessions, each lasting 90 minutes, while the control group did not receive any intervention. Data were analyzed by repeated-measures ANOVA and Bonferroni’s post-hoc test using SPSS 22.
Findings: Both vaginismus-specific schema therapy and conventional schema therapy were effective in increasing sexual self-assertiveness (Eta=0.83) and self-esteem (Eta=0.94) in women with vaginismus disorder compared to the control group (p=0.001). A comparison of the mean differences between the two intervention groups and the control group revealed that vaginismus-specific schema therapy was more effective in improving self-assertiveness and sexual self-esteem in women than conventional schema therapy (p=0.001).
Conclusion: Vaginismus-specific schema therapy for vaginismus enhances sexual self-assertiveness and self-esteem among women with vaginismus by helping them identify their problems.

Volume 13, Issue 52 (4-2016)
Abstract

  The purpose of this study was prediction of thermal (effective moisture diffusivity and specific energy consumption), physical (shrinkage and color) and mechanical properties (rupture force) of terebinth fruit in a semi industrial continuous dryer using artificial neural networks (ANNs). Three effective factors on thermal, physical and mechanical properties, were air temperature, air velocity and belt linear speed as independent variables. Experiments were conducted with a semi industrial continuous dryer in temperature levels of 45, 60, 75 °C, air velocity levels of 1, 1.5 and 2 m/s and belt linear speed levels of 2.5, 6.5, 10.5 mm/s. Necessary data were collected using a the semi-industrial continuous dryer. Feed and cascade forward back propagation networks with learning algorithms of Levenberg-Marquardt and the Bayesian regulation were used to train the patterns. To predict the effective moisture diffusivity, feed forward networks with the Bayesian regulation, topology of 3-10-13-1 and 108 training cycles with R2=0.9999 was optimal arrangement. The optimal topology to predict the specific energy consumption was 3-10-1 with feed forward network, Levenberg-Marquardt algorithm, 117 training cycles and R2=0.9961. The best network for shrinkage prediction was feed forward network with the Bayesian regulation algorithm, topology of 3-6-4-1, 101 training cycles and R2=0.9926. To predict the total color change, feed forward networks with the Levenberg-Marquardt algorithm, topology of 3-6-7-1, 24 training cycles and R2=0.9139 was the optimal arrangement. The best network to predict the rupture force was feed forward network trained with the Bayesian regulation, topology of 3-8-6-1, 69 training cycles and R2=0.9990.

Volume 13, Issue 60 (0-0)
Abstract

β-galactosidase is one of the most important and widely used enzymes in three areas of health, Food Industry and environment, so kinetic modeling of this enzyme could be playing an important role in the optimization of its industrial production process. First, in this study kinetic of β-galactosidase production by Bacillus licheniformis bacteria in batch fermentation was evaluated during 22 hours, in the range of 20-50 g/l of initial lactose concentration as a limiting substrate, at 30 ° C. Then, with the observation of inhibition at the highest concentration of this range, logistic and Haldane kinetic models were selected to model and determine the kinetic parameters of fermentation. These models were obtained a good approximation of the experimental results of substrate utilization in all phases and microbial growth data in the exponential growth phase and the stationary phase, but minor deviations of the experimental data were observed in the decelerating growth phase. In addition, β-galactosidase activity results were in good agreement with experimental data, and the maximum deviation in this data was observed in initial concentrations 30 and 40 g/l of substrate simultaneously with the end of the exponential phase and beginning of decelerating phase of microbial growth (The fourth hours of starting inoculum). The linear regressions between experimental data and results obtained from the models, in all initial concentration of lactose and for each variable biomass concentration, substrate concentration and enzyme activity, was more than 0.95.
 

Volume 14, Issue 1 (March & April 2023 (Articles in English & French) 2023)
Abstract

Les recherches abordant la question de la compétence éthique en didactique du FLE sont aujourd’hui au cœur de l’actualité et sont souvent reprises pour analyser différents aspects de cette compétence au sein du processus de l’enseignement-apprentissage des langues-cultures étrangères. Sans la compétence éthique qui a pour source la sémiotique, la didactique des langues-cultures étrangères ne peut
Received: 31 December 2022
Received in revised form: 7 February 2023
    Accepted: 18 March 2023
 pas être perfectionnée. 

Cet article tente de répondre à la question comment définir précisément la notion de compétence éthique et comment l’intégrer dans les cours de FLE.  Cette étude a donc pour objectif de proposer des tâches communes à accomplir par les apprenants afin de créer un espace de l’agir avec l’autre, un espace commun qui pousse les apprenants à partager des valeurs en devenir, des valeurs humaines non seulement dans la classe mais aussi dans la société. La manière dont la compétence éthique peut être acquise et développée parmi les apprenants de langue en tant des acteurs sociaux sera également discutée et abordée dans le cadre d’une recherche descriptivo-analytique de trois manuels de langue basés sur l’approche actionnelle et adressés aux adolescents de 14 à 18 ans. En analysant les tâches abordées dans les manuels de langue basés sur l’approche actionnelle nous allons comprendre comment l’éthique construit un espace commun de l’agir qui encourage les apprenants et les enseignants à partager des valeurs en devenir aussi bien dans la classe de langue que dans la société.
 

Volume 14, Issue 16 (Forth Special Issue 2015)
Abstract

For the experimental study of fluidized bed`s hydrodynamics and investigating of several effective parameters on this hydrodynamics, a fluidized bed is designed and manufactured. This bed is a cylindrical transparent column with internal diameter as 14 cm. Bed particles are silica sand in the size ranged from 200 to 750 micrometers. In this study, first the Minimum fluidization velocity ("Umf" ) of Different sieve particles is determined and the effect of particle size and bed height on this velocity is investigated. Then, influence of particle size and bed height on the bed pressure drop is studied. Then experimental results are compared with calculated values from current prediction correlations to determine the deviations of the prediction values from experimental data. As a result, by increasing the particle size in the equal bed height, Minimum fluidization velocity is increased but the pressure drop does not significantly change. Also, by increasing bed height, the Minimum fluidization velocity and pressure drop increased. But for Minimum fluidization velocity, this increase is insignificant and it can be ignored. Also bed pressure drop changed linearly with bed height

Volume 15, Issue 59 (Fall 2022)
Abstract

Lyrical literature and hence romantic poetry is a collection of feelings, emotions and representations of human relationships which has been widely used in different eras and discourses with various even conflicting functions and manifestations. Romantic poetry, distancing from political poetry, discusses politics of literature rather than political literature. However, modern Iranian poetry, deeply connected with politics and protest literature, establishes a different relation between dramatic poetry and political poetry. Shamlou is one of the prominent poets of political poetry whose antagonism and political conflicts are sources of metaphors and constructions in romance. This paper, based on critical discourse analysis, emphasizing the concept of "antagonism" as a key concept in politics, shows that politics is related to romance in two ways. First, such romances are new experiences to represent human relationships. Second, they are against traditional literature, since Shamlou by changing the rhetoric of romantic poetry created a type of literature that is romance in surface but resistance literature in depth.
Extended Abstract
Iranian modern literature is fundamentally different from pre-modern literature; although the way modern literature uses the theological source of pre-modern literature is not its logical continuation. Political orders and the concepts are the most important elements of the distinction between two periods. Usually, romantic poetry is distinguished from political poetry, but Iranian modern poetry, which is connected to protest literature and political matters, has established a good relationship between romantic and political poetry. Studying he relationship between political literature and the politics of the literature is the main goal of this manuscript. The concept of “antagonism" is emphasized here as the key word in Shamlou's poetry, showing how politics is connected to romances. Firstly, these romances are new representations of human experience, and secondly it is a rhetorical change in romantic poetry, which is against the traditional literature. The most important principle that connects the concept of "articulation" to the political issues is discursive conflict; thus, for a better understanding of the conflict, political literature, and the politics of literature discourse, the concept of politics must be separated from the political orders. Any action which is beyond the realm of the individual, can influence the decisions of the society, especially the political power, and in some way modify or oppose it, and it is called a political action. Political poetry promotes the idea of anti-reading, and a political poet as an anti-reading thinks about the "enemy other". After a huge break of the Persian Constitutional Revolution, social movements and the libertarianism language took an explicit form. Literature migrated from traditional lyrical to a new space. Revealing the name of "Aida" with the poet not as a Platonic lover but as a better half living with Shamlou is a kind of conflict with the tradition of romance-writing in one hand and "Literature of resistance" from the other. In political poetry, enemy is the other, and in the romantic poem, the other is the friend. The poet of political poetry thinks about resistance; in this view, the enemy has become a focal point; because the enemy has captured a part of his unconscious like a "central metaphor". The confrontational mentality of the political poet turns the other, such as the enemy, into an object, and turns the other, such as friend and love, into a praiseworthy subject. Contemporary poetry, unlike pre-modern poetry with a negative aspect, brought the private into the domain of the public, and by highlighting the other friend in romantic poetry, created a kind of resistance and negation tool. In his poem, Shamlou clearly says that love is an epic and he sees this reversal from the eyes of the enemy. The link between love and struggle in Shamlou's poems is the internal link between the practice of personal experience and the most external political behaviors. In a general classification, historically, his life can be divided into three parts:
A: The period in which the search for love gives way to experience; the experience of life and poetry, which, according to him, are "not impressions of life, but life itself". This period can be referred to as the period "before the appearance of Aida". B: The period when the poet, tired of the bitter experiences he has acquired in his personal and social life, finds another love and he moves to the house so that love becomes a refuge and a bastion where he can relieve the outside fatigue and find new strength to fight. This period starts from 1962 "Aida's appearance". C: In the third part of his life, although he still has Aida's presence, Shamlou thinks more about death and "struggle with silence" and he remembers his friends. In fact, this same love and social commitment in Shamlou's poetry makes him not distinguish between individual love and public love.
From the perspective of love, three types of love can be distinguished in Shamlou's poem: 1. Romantic love without social pains.2. Personal love with social representations, and 3. General love or love of freedom and man:
1. Although romantic love is not the general indicator of the concept of love in Shamlou's poems; Shamlou has been involved with this type of love in a negative way. He considered individual and public love as opposed to romantic love, which always has the suspicion of eroticism. Romantic love can be found in Shamlou's first poetry collection, "Āhang-hāye Farāmush Shodeh (Forgotten Songs)".
2. Keeping distance from his romantic love, Shamlou discovers love in another dimension: the shadow of resistance; as it can be a strength for fighters who return to fight again.
3. By rejecting romantic love, Shamlou arrived at a special definition of man; a person who can have the courage to deny the disturbing facts and reveal himself as a fighting person.
The convergence of the meanings of the two fields of politics and love has turned Samlou's poem into a different poem. From this point of view, finding the signs and codes of his romantic poetry is not compelling only in purely lyrical spaces. The enemy as a threatening other has caused Shamlou to experience new ways, because the discourse of his poetry is against the discourse of domination; whether we seek this dominance in aesthetics or in the discourse of power. It is in this situation that Shamlou glorifies the beloved as another and brings love into his poem in the atmosphere of resistance to discover a new truth. In individual romances, he uses the same signs and symbols that used before in public love. The same lover with a revolutionary face and the same revolutionary faces with the beloved cause him to not see a difference between public love and personal love.
 

Volume 17, Issue 12 (2-2018)
Abstract

Pool boiling has the ability to remove large heat flux at low difference temperature of wall and this can be further enhanced by using surface modification methods. This article investigates pool boiling heat transfer on 4 levels with different orientations. For this purpose, a laboratory device was designed and built. The main goal of providing a simple and cost-effective manner with high durability in industrial applications, to having the highest amount of critical heat flux at the lowest level of super-heated temperature difference. The results show that surface roughness factor causing a delay in connecting the bubbles and heat flux increased slightly. In addition to roughness factor, two factors separating bubbles from the fluid in the heat dissipation and more power nucleation sites and micro-bubble layer can be more important than the surface roughness. The surface polished in one direction with lower roughness has higher critical heat flux than circular rough surface. Ultimately to combine bubble separation and more feed the micro layer with made micro channel. With this method it could be increased 131% critical heat flux and 211% heat transfer coefficient.

Volume 19, Issue 1 (January 2019)
Abstract

Shan-Chen model is the most common model for simulation of multiphase flows using lattice Boltzmann method. The entire multiphase Lattice Boltzman models are limited to regimes, where the temperature dynamics are either negligible or their effects on the flow are unimportant. The entire multiphase LBE models are limited to regimes where the temperature dynamics are either negligible or their effects on the flow are unimportant. The multiphase isothermal lattice Boltzmann equation (LBE) model and single phase thermal LBE (TLBE) model were described. In this research, by combining these two models, the thermal two-phase LBE model was proposed. The coupling of the two models is through a suitably defined body force term. Due to the external nature of this coupling, the new model will have the same stability as the isothermal two-phase model. For this purpose, the scalar thermal model was initially neutral and, then, the Shan-Chen model was expressed in homogeneous state. Also, droplet falling on a heated solid surface and positioning droplet on heated solid surface in different Rayleigh and Reynolds number and different diameter size of droplet were considered. Results show that the temperature in the multiphase flow, as a barrier, delays achieving a stable state, and the fake speed created at the interface area in the temperature field also affects.


Volume 19, Issue 5 (12-2019)
Abstract

In this paper hydraulics and flow structure over the rectangular piano key weirs with different heights have been studied experimentally and numerically and effects of different fillet shapes on hydraulic performance are investigated. Experiments are conducted in a one meter width flume. Models of the tested weirs are made from PVC Plates in 3 different heights and with the same L/W ratios equal to 5. Discharge coefficient curve for wide range of heads over height ratio for 3 different weir heights are determined and effect of triangular, half round and oval fillets on increasing of discharge coefficient are investigated. In this research, the chosen range for ratio of head over height is in good agreement with ratio which has been used to design of prototype weirs. Large triangular and oval shaped fillets have significant effects on improvement of performance of the piano key weirs. Main effect of fillets is more uniformly distribution of the flow streamlines over the downstream part of the side crest. In second part of this paper, one and half-key piano key weirs with oval noses and without any nose (net) have been numerically modeled using Flow-3D model. Discharge coefficients of one of the numerically simulated rectangular models is compared with derived discharge coefficient curve from physical model. Convergence of inflow and outflow of numerical model has been controlled. Satisfactory correspondence presents between the experimental and numerical studies. Discharge distribution over the crest of the normal PKW and the weir equipped with oval fillet are compared. Result showed that due to uniformly distribution of the streamlines, the fillet notably increases flow rate at the downstream part of the side crest. Results of numerical simulations are exported to Tecplot software, in order to visualize the flow streamlines at different parts of the studied weirs. The weir with oval fillet affects the flow streamlines in three positions: the near bead streamlines of the weir with oval fillet, have less lateral diversion when they reach beneath the overhang of the outlet keys. In other word, streamlines pass this region more smoothly rather than normal PKW. As a result, the fillet decreases the local head loss, when the flow enters the inlet keys. Streamlines of the mid depth level show less contraction at the entrance and middle of the inlet keys. Consequently, lower velocity of the flow along the inlet keys, helps to more evacuation of the flow from side crests. Finally, streamlines release more uniformly from downstream part of the side crest. These phenomena results low submergence level at the middle of the outlet keys. The outlet keys are the brake of nonlinear weirs. By decreasing the submergence level of the outlet keys, flow from the side crests discharge more freely from inlet to the outlet keys.   

Volume 19, Issue 11 (November 2019)
Abstract

This study aims to investigate the effect of nanoparticle deposition on the boiling surface in the presence of microchannel on the characteristics of boiling heat transfer. In this experimental study, the copper boiling surfaces including polished circular surface, rectangular and trapezoidal microchannels were used. The microchannels include feeding sub-channels perpendicular to the main channel, which increases the boiling surface and separates the downward cool fluid flow and upward hot bubbles. Nuclear boiling experiments on microchannel surfaces in the presence of a hybrid water-based nanofluid containing 70% titanium oxide and 30% OH-based multi-wall carbon nanotubes in volumetric concentrations of 0.1% and 0.5% have been conducted. The results of nanofluid boiling experiments on both microchannel surfaces show that with increasing concentrations, critical heat flux and heat transfer coefficient increases and the highest increase in critical heat flux and heat transfer coefficient is related to the hybrid nanofluid with 0.5 % volumetric concentration on the surface with trapezoidal microchannel and their values are 64.64% and 344.76%, respectively, compared to pure water boiling on the polished copper surface. Also, in boiling of pure water on the deposited surfaces with nanoparticles, the greatest increase in critical heat flux and heat transfer coefficient is related to the surface with trapezoidal microchannels with 0.1% volumetric concentration  and 0.5% and volumetric concentration  and  their values are 120.16% and 149.4% respectively, compared to pure water boiling on the polished copper surface.
 


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