نتایج جستجو برای: flac 2d
تعداد نتایج: 83451 فیلتر نتایج به سال:
Deep-seated slope failures are common features in the mountains of the Raca Unit, Magura Nappe of the Flysch Belt of Western Carpathians. Since they represent very complicated system, understanding of their evolution and triggers still remains unclear. We tried to provide a back-analysis of their development by using a finite difference code (FDM) of continua (Flac 4.0). We confirmed that such ...
Two methods were devised to select a series of overlapping deletion mutations carried on episomal elements in Escherichia coli. The deletions were then used in an analysis of (i) the relative position on the genome of previously described mutant loci in the flagellar genes, (ii) the relative position of a newly defined cistron, flaN, and (iii) the orientation and direction of transcription of g...
Kalman filtering is a method for estimating state variables of a dynamic systems recursively from noise-contaminated measurements. For systems with nonlinear dynamics, a natural extension of the Linear Kalman Filter (LKF), called Extended Kalman filter (EKF) is used. The Kalman filter represents one of the most popular estimation techniques for integrating signals from navigation systems, like ...
به دلیل آنکه دیوارهای حائل خاک مسلح از جمله تأسیسات زیربنایی شهرها و راه ها محسوب می شوند و باید قابلیت سرویس دهی خود را پس از زلزله خصوصاً در مجاورت بزرگراه ها بعنوان شریان های حیاتی حفظ نمایند، بررسی رفتار دینامیکی این سازه های خاکی تا لحظه گسیختگی از اهمیت ویژه ای برخوردار می باشد. بررسی رفتار استاتیکی و لرزه ای دیوارهای خاک مسلح ژئوسنتتیک توسط محققین مختلفی انجام شده و نتایج قابل قبولی از عم...
چکیده احداث مخازن نفت و گاز در چند دهه اخیر به دلایل گوناگون از جمله محیط زیست، استراتژیک، اقتصادی، تنظیم بازار عرضه و تقاضا و نیز تامین بازار در زمان اوج مصرف، در کانون توجه کشورهای مختلف بویژه کشورهای صنعتی و صادرکنندگان عمده نفت بوده است. از این جمله کشور ایران نیز به خصوص در چند سال گذشته مطالعات تحقیقاتی و امکان سنجی را در این موضوع شروع کرده است. این مغارها می توانند به صورت پوشش دار و ب...
introduction emerging hypotheses suggest a causal role for prenatal androgen exposure in some cases of autism spectrum disorders (asd). the ratios of the lengths of the bones of the 2nd to the 4th digits (2d:4d) are purported to be markers for prenatal androgen exposure and to be established early in gestation. ratio of second and fourth digits (2d:4d) is usually used as a proxy for prenatal t...
We report an experimental study of the backscattering of a sound wave of frequency f by a surface vibrating harmonically at frequency F (F << f) and amplitude A in the regime where the Doppler effect overcomes bulk nonlinear effects. When the duration to of the analyzed time series of the scattered wave is small compared to the vibration period, the power spectrum of the backscattered wave is p...
Longwave oscillatory Marangoni convection in a planar binary liquid layer is studied. Finite-amplitude regimes with perturbations of temperature and solute concentration of order unity are considered. Both thermocapillary and solutocapillary effects are taken into account. Oneand two-dimensional patterns on a rhombic lattice are studied and their stability to the perturbations which do not nece...
multi-dimensional representation and analysis because of the unique relationships between the vertical and horizontal distributions of excavated materials and their spatio-temporal distribution. Until very recently, however, archaeologists have predominantly applied only two-dimensional (2D) forms of representation to understand the complex spatial distribution of archaeological materials. Curr...
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