نتایج جستجو برای: classes of similarity solutions
تعداد نتایج: 21197881 فیلتر نتایج به سال:
We investigate self-similar dynamical processes in an isothermal self-gravitational fluid with spherical symmetry. In reference to earlier complementary solution results of Larson, Penston, Shu, Hunter and Whitworth & Summers, we further explore the ‘semi-complete solution space’ from an initial instant t→ 0 to a final stage t→ +∞. These similarity solutions can describe and accommodate physica...
در این پایان نامه ما، گراف کلاس های هم ارزی مقسوم علیه های صفر یک حلقه جابجایی r را مطالعه می کنیم. در ادامه چگونگی دریافت اطلاعاتی درباره حلقه r از این ساختار را نشان می دهیم. به ویژه چگونگی شناسایی اول وابسته های حلقه r را به کمک گراف کلاس های هم ارزی مقسوم علیه های صفر آن تعیین می کنیم. ایده اصلی این پایان نامه از مقاله s. spiroff, c. wickham, a zero divisor graph determind by equivalence...
The COVID-19 pandemic has impacted all aspects of our lives and even the scientific fields. Most of the COVID-19 preventative strategies, such as basic hygiene, are similar to concerns of patients with obsessive-compulsive disorder, especially those with contamination fears. The obsessive-compulsive (OC) questionnaires typically have several items about basic hygiene. The contamination/cleaning...
the main purpose of the present study was to investigate the relationship between listening proficiency and metacognitive listening strategies awareness among low, mid, and highly self-regulated students. three hundred and seventy one efl students participated in this study (all grade 3 and 4 high-school students who were studying in khansar in academic year 1391-92). to gather the data, three ...
anxiety is one common disorder during childhood. in curing anxiety disorders, there are different types of psychological remedies, pharmotherapy, family therapy, and music therapy that can improve the individual’s anxiety, but we need some other remedies to improve social and emotional relationship and interactions. considering the importance of curing the anxiety disorders, the effect of sand ...
we introduce a new solution for kawahara-kdv equations. the lie group analysis is used to carry out the integration of this equations. the similarity reductions and exact solutions are obtained based on the optimal system method.
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