رابطه افت تحصیلی با رضایت تحصیلی و برخی عوامل در دانشجویان دانشگاه علوم پزشکی گلستان

زمینه و هدف : افت تحصیلی به عنوان یکی از معضلات نظام هاي آموزشی در کلیه کشورها مشاهده شده و تبعات روحی، روانی، خانوادگی و اجتماعی متعددي را براي دانشجویان به همراه دارد. این مطالعه با هدف تعیین رضایت تحصیلی و برخی عوامل مرتبط با 1387 انجام شد. - افت تحصیلی دانشجویان در دانشگاه علوم پزشکی گلستان در سال هاي 89 1387 دانشگاه علوم پزشکیگلستان ازطریق - روش بررسی: این مطالعه توصیفی- تحلیلی از نوع مقطعی، در دانشجویان ورودي 89 سرشماري 1393 پرونده مورد بررسی قرارگرفت که از این تعداد، 80 نفر از دانشجویان که معیارهاي افت تحصیلی در این مطالعه را داشتند، انتخاب شدند. دادهها از طریق پرسشنامهبرگرفته شده ازمطالعه مشابه که روایی وپایایی آن از طریق ضریب آلفاي کرونبا خ 0/87 ) تایید شده بود، با مشخصات دموگرافیک، تحصیلی و رضایت از تحصیل جمع آوري گردید. تحلیلهاي آماري با استفاده از آمار ) توصیفی و آزمون کاي دو صورت گرفت. 45 درصد و / 19 سال بود. بیشترین فراوانی افت تحصیلی به ترتیب در دانشجویان پزشکی با 3 - یافتهها: محدوده سنی دانشجویان 39 10 درصد بود. از نظر رضایت 20 درصد رضایت خو ب ، 8 درصد متوسط و 72 درصد / 17 درصد و بهداشت محیط با 7 / پرستاري 3 و میزان حمایت (P ≤0/ دانشجویان رضایت آموزشی ضعیف داشتند. بین میزان رضایت آموزشی دانشجویان با متغیرشغل پدر ( 019 ارتباط معنیدار آماري مشاهده شد. ( P≤0/ و تعامل با مشاوره و استاد مشاور( 010 ( P≤0/ خانواده( 010 نتیجهگیري: دادههاي این مطالعه نشان داد که متغیرهاي رشته، شغل پدر، حمایت خانواده، تعامل با استاد مشاور و داشتن رضای ت تحصیلیاز عواملی هستند که برافت تحصیلی دانشجویان تاثیرگذار بوده است. به نظر میرسد که دربهبود وضعیت آموزشی دانشجویان، حمایتهاي خانوادگی به همراه تعاملات مناسب استاد و دانشجو، در کنار امکانات، تسهیلات و فرصتهاي آموزشی دانشگاه بتوانند باعث پیشرفت یادگیري و رضایت از تحصیلی در دانشجویان شود

Performance of various training algorithms on scene illumination classification

The increasing number of training algorithms along with their convincing results will make this question that which algorithm will be more efficient. This study aims to perform some widespread tests on some well-known training algorithms (Levenberg-Marquardt, Resilient back propagation and Scaled conjugate gradient) to evaluate their performance for scene illumination classification. The results presented by this research can provide a reliable guide line for choosing the most appropriate training algorithm depends on the problem specification. The results of this study select the LM training method with the accuracy of 94.41% as the most accurate and RP as the most quick method with response time of 0.426 s

Froude number scaling unifies impact trajectories into granular media across gravitational conditions

The interactions of solid objects with granular media is countered by a resistance force that stems from frictional forces between the grains and the media's resistance to inertia imposed by the intruder. Earlier theories of granular intrusion have suggested an additive contribution of these two families of forces and had tremendous success in predicting resistive forces on arbitrary shaped objects. However, it remains unclear how these forces are influenced by gravitational conditions. We examine the role of gravity on surface impact behavior into cohesionless granular media using hundreds of soft-sphere discrete element simulations, we demonstrate that the outcome of impacts remain qualitatively similar under varying gravitational conditions if initial velocities are scaled with the Froude number, suggesting an underlying law. Using theoretical arguments, we provide reasoning for the observed universality and show that there is a hidden dependency in resistive forces into granular media on Froude number. Following the theoretical framework, we show that Froude number scaling precisely collapses impact trajectories across gravitational conditions, setting the foundation for explorations in granular behavior beyond Earth

Moir\'e Engineering in 2D Heterostructures with Process-Induced Strain

We report deterministic control over moir\'e superlattice geometry in twisted bilayer graphene by implementing designable device-level heterostrain with process-induced strain engineering. We quantify strain and moir\'e interference with Raman spectroscopy through in-plane and moir\'e-activated phonon mode shifts. Results support systematic C$_{3}$ rotational symmetry breaking and tunable periodicity in moir\'e superlattices under the application of uniaxial or biaxial heterostrain, confirmed with density functional theory based first principles calculations. This provides a method to not only tune moir\'e interference without additional twisting, but also allows for a systematic pathway to explore new van der Waals based moir\'e superlattice symmetries by deterministic design

Fragment screening targeting Ebola virus nucleoprotein C-terminal domain identifies lead candidates

The Ebola Virus is a causative agent of viral hemorrhagic fever outbreaks and a potential global health risk. The outbreak in West Africa (2013-2016) led to 11,000+ deaths and 30,000+ Ebola infected individuals. The current outbreak in the Democratic Republic of Congo (DRC) with 3000+ confirmed cases and 2000+ deaths attributed to Ebola virus infections provides a reminder that innovative countermeasures are still needed. Ebola virus encodes 7 open reading frames (ORFs). Of these, the nucleocapsid protein (eNP) encoded by the first ORF plays many significant roles, including a role in viral RNA synthesis. Here we describe efforts to target the C-terminal domain of eNP (eNP-CTD) that contains highly conserved residues 641-739 as a pan-Ebola antiviral target. Interactions of eNP-CTD with Ebola Viral Protein 30 (eVP30) and Viral Protein 40 (eVP40) have been shown to be crucial for viral RNA synthesis, virion formation, and virion transport. We used nuclear magnetic response (NMR)-based methods to screened the eNP-CTD against a fragment library. Perturbations of 1

Near the horizon of 5D black rings

For the five dimensional N=2 black rings, we study the supersymmetry enhancement and identify the global supergroup of the near horizon geometry. We show that the global part of the supergroup is OSp(4*|2)X U(1) which is similar to the small black string. We show that results obtained by applying the entropy function formalism, the c-extremization approach and the Brown-Henneaux method to the black ring solution are in agreement with the microscopic entropy calculation.Comment: 26 pages, version to appear in JHEP, the near horizon superalgebra is corrected, discussion on small black ring is discarded, Brown-Henneaux approach to large black ring is adde

Energy loss in a strongly coupled anisotropic plasma

We study the energy loss of a rotating infinitely massive quark moving, at constant velocity, through an anisotropic strongly-coupled N=4 plasma from holography. It is shown that, similar to the isotropic plasma, the energy loss of the rotating quark is due to either the drag force or radiation with a continuous crossover from drag-dominated regime to the radiation dominated regime. We find that the anisotropy has a significant effect on the energy loss of the heavy quark, specially in the crossover regime. We argue that the energy loss due to radiation in anisotropic media is less than the isotropic case. Interestingly this is similar to analogous calculations for the energy loss in weakly coupled anisotropic plasma.Comment: 26+1 pages, 10 figures, typos fixe