نتایج جستجو برای: a field
تعداد نتایج: 13574029 فیلتر نتایج به سال:
We discuss shallow resonances in the nonrelativistic scattering of two particles using an effective field theory (EFT) that includes auxiliary with quantum numbers resonance. construct manifestly renormalized amplitude up to next-to-leading order a systematic expansion. For narrow resonance, is perturbative except immediate vicinity resonance poles. It naturally has zero low-energy region, anal...
this ethnographic case study research was carried out in a private school setting in the context of iran. the research tried to explore the analysis and identity construction of a group of learners and teachers along with the content analysis of books on the basis of four types of commodified, political, national and narrative identities. how english language learners and teachers in an informa...
فشار روانی پس از سانحه (ptsd) یکی از شدیدترین انواع اختلالات اضطرابی است که در پی مواجهه با سوانح شدید بروز می کند. هدف از این مطالعه بررسی اثرات تزریق ملاتونین در دو بازه ی زمانی 6 و 11 روزه بر پاسخ-های رفتاری موش صحرایی مدل ptsd بود. بمنظور القاء ptsd از مدل حیوانی تلفیقی شوک و تک استرس طولانی مدت (s&sps) استفاده شد. حیوانات به مدت 5 روز، روزانه یک شوک الکتریکیma 1 دریافت کرده و در روز ششم با...
mobile robot navigation is one of the basic problems in robotics. in this paper, a new approachis proposed for autonomous mobile robot navigation in an unknown environment. the proposedapproach is based on learning virtual parallel paths that propel the mobile robot toward the trackusing a multi-layer, feed-forward neural network. for training, a human operator navigates themobile robot in some...
in this project, some new polyaspartimides, (pas)s, have been synthesized form michael addition reaction between new synthetic bismaleimide (bmi) and some aromatic diamines. a characteristic property of this polyaspartimides is a pendent carboxylic group, which introduced to these polymers from new bismaleimide. bismaleimides (bmi) is one of the interesting compounds, which can be self-polymeri...
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