اندازه‌گیری پرتو گاما در زمینه‌های مختلف تحقیقاتی نیازمند آشکارسازهای کارآمد است. زمینه دزیمتری فوتون آشکارساز جرقه‌ای NaI(Tl) به عنوان یکی از سوسوزن معدنی (غیرآلی)، علت دارا بودن مقدار بالای نور خروجی بسیار حایز اهمیت این پژوهش سعی گردیده است، با کمک کد مونت‌کارلو (MCNPX) مقدمات مشخصه‌یابی توسط و بهره‌گیری روش‌های متفاوت محاسبه دز (تالی‌های 6F، 4*F، 6+F 8*F) انجام شود. طور معمول، یک تابش (شمار...

Abstract Background Personal health behaviours, which rely on community characteristics, could affect individual vulnerability disease infection. Due to insufficient study examine behaviours as risk factors of COVID-19 infection, we conducted municipal level spatial analysis investigate association between and incidence. Methods We extracted cumulative incidence data from January 20th 2020 Febr...

این مقاله حاصل پژوهشی درباره قیمت‌گذاری و تبلیغ پویا است با استفاده از یک مدل کنترل بهینه، روشی برای تعیین تعداد بلیت فروش رویداد ورزشی یا تفریحی به­دست می­‌دهد تا سود برگزارکننده بیشینه شود؛ همچنین سعی شده حد ممکن هزینه پشتیبانی در این­گونه رخدادها نظیر غذا، نوشیدنی، کالاها، بیمه، امکان واگذاری رایگان سایر خدمات به خریداران نظر گرفته شود. روش، علاوه بر بلیت‌­ها (برنامه‌­ریزی ظرفیت)، قیمت پویای...

A routing protocol in a wireless sensor network is usually used to find a route to the destination so that the nodes can report the event to the sink in an energy efficient manner. The battery limitations of the sensor nodes and the characteristics of the environment where the nodes are deployed, make the routing problem very challenging. The Sensor data from different nodes in a dense region m...

We are interested in the real time pose estimation of a group of networked mobile robots based on exteroceptive information from their vision systems. Additionally, we are also interested in simultaneously tracking a rigid unknown object. We present a localization and object tracking approach based on statistical operators and simple graph searching algorithms. The approach was implemented in o...

Bhendi yellow vein mosaic disease (BYVMD) is the most devastating viral of okra (Abelmoschus moschatus ssp. moschatus) which affects yield and quality produce in India. The causative agent BYVMD begomovirus i.e. bhendi virus (BYVMV) having DNA-A molecule along with betasatellite. Present study was carried out during 2019–21 at research farm ICAR-National Bureau Plant Genetic Resources, New Delh...

Weed is a plant that grows along with nearly all field crops, including rice, wheat, cotton, millets and sugar cane, affecting crop yield quality. Classification accurate identification of types weeds challenging task for farmers in earlier stage growth because similarity. To address this issue, an efficient weed classification model proposed the Deep Convolutional Neural Network (CNN) implemen...