نتایج جستجو برای: scale model
تعداد نتایج: 2555660 فیلتر نتایج به سال:
the solar radiation received by earth surface is one of the most applicable parameter that is so important in hydrology, agriculture, meteorology and climatological modeling. because of very expensive instrument for measuring the radiation, researchers suggested many different experimental equations to estimate this parameter in different climate. seven models which are calibrated for semi-arid...
For the analysis of caries experience in seven year old children we explored the association between the presence or absence of caries experience among different deciduous molars within each child. Some of the observed high associations have an etiological basis (e.g., between symmetrically opponent molars), while others (diagonally opponent molars) are assumed to be the result of the transitiv...
This study examined the influence of rater training and scoring context on the manifestation of rater effects in a group of trained raters. 120 raters participated in the study and experienced one of three training/scoring contexts: (a) online training in a distributed scoring context, (b) online training in a regional scoring context, and (c) stand-up training in a regional context. After trai...
Objectives Dark tetrad personality traits model is a new formulation of maladaptive personality that was introduced after dark triad personality and has added sadism component to Machiavellianism, narcissism, and psychopathy constellation. The current research aimed to study the validity of Dark tetrad personality traits model among Iranian population. Methods This cross-sectional study was im...
پنل های خورشییدی دارای مشیه ه جریان -ولتاژ غیر خطی بوده و تنها در یک نقطه کار خاص، حداکثر توان را تولید می کنند. این نقطه بهینه توان با تغییر دما و شیدت نور تغییر می کند. روش های مهتلفی برای ردیابی نقطه حداکثر توان به صورت free model و based model معرفی شده است. این تحقیق روش جدیدی جهت بهبود عملکرد ردیابی نقطه حداکثر توان پنل های خورشیدی جدا از شبکه ارائه می دهد و الگوریتم روش پیشینهادی از دو...
Bark beetles cause widespread damages in the coniferous-dominated forests of central Europe and North America. In the future, areas affected by bark beetles may further increase due to climate change. However, the early detection of the bark beetle green attack can guide management decisions to prevent larger damages. For this reason, a field-based bark beetle monitoring program is currently im...
run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...
Objectives The current study aimed at validating the Integrated Motivational-Volitional Model of suicidal behavior in Iranian students. Methods The population of the current descriptive correlational and structural equation model included all students of Ardabil city among which 520 people of Mohaghegh Ardabili University students were selected as the sample. Suicide Attempt Scale, The Suicid...
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
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