نتایج جستجو برای: 2d model

تعداد نتایج: 2167494  

Journal: :فیزیک زمین و فضا 0
s vatankhah student of geophysics, department of earth physics, institute of geophysics, university of tehran, iran v ardestani, e. department of earth physics, institute of geophysics, university of tehran, iran m ashtari jafari department of earth physics, institute of geophysics, university of tehran, iran

applying 2d algorithms for inverting the potential field data is more useful and efficient than their 3d counterparts, whenever the geologic situation permits. this is because the computation time is less and modeling the subsurface is easier. in this paper we present a 2d inversion algorithm for interpreting gravity data by employing a set of constraints including minimum distance, smoothness,...

ژورنال: :مجله پژوهش های حفاظت آب و خاک 2016
فیروزه جوادزاده محمدرضا خالدیان مریم نوابیان پریسا شاهین رخسار

محدودیت منابع آب در برخی مناطق، موجب کاربرد آب های نامتعارف و استفاده از سامانه های آبیاری با راندمان بالا نظیر آبیاری قطره ای شده است. عدم مدیریت صحیح در مصرف منابع آب، منجر به افزایش تجمع نمک در سطح خاک گردیده است. به سبب محدودیت های اجرایی مانند بالابودن هزینه و زمان بر بودن آزمایش های مزرعه ای، استفاده از مدل های شبیه-ساز برای مطالعه سناریوهای مختلف مدیریتی توصیه می شود. هدف پژوهش حاضر بررس...

Journal: :International Journal of Advanced Computer Science and Applications 2019

A. Ardeshir, F. Bahadori and A. Tahershamsi,

In this paper, development of a semi-two- dimensional mathematical model called SDAR is introduced. The model is composed of two principal modules of hydraulics and sediment transport. The newly developed SDAR model has a number of capabilities including determination of sediment transport rate, aggradation - degradation calculation, longitudinal profile and lateral cross–sectional variation s...

ژورنال: علوم آب و خاک 2013

Excess pore water pressure in clay core dams during construction and primary filling reservoir (first impounding) causes initiation and progression of hydraulic fracture. In this research, the instrumentation data during construction and first filling reservoir (first impounding) was analyzed. It measured internal deformations, pore water pressures and total vertical stresses and compared with ...

Journal: :journal of computational applied mechanics 0
majid sadedel center of advanced systems and technologies (cast), school of mechanical engineering, college of engineering, university of tehran, tehran, iran. aghil yousefikoma center of advanced systems and technologies (cast), school of mechanical engineering, college of engineering, university of tehran, tehran, iran faezeh iranmanesh center of advanced systems and technologies (cast), school of mechanical engineering, college of engineering, university of tehran, tehran, iran.

the main objective of this article is to optimize the walking pattern of a 2d humanoid robot with heel-off and toe-off motions in order to minimize the energy consumption and maximize the stability margin. to this end, at first, a gait planning method is introduced based on the ankle and hip joint position trajectories. then, using these trajectories and the inverse kinematics, the position tra...

2015
Anna Avramenko Heikki Haario

This paper reports the development and application of a 2D depth-averaged model. The main goal of this contribution is to apply the depth averaged equations to a wind park model in which the treatment of the geometry, introduced on the mathematical model by the mass and momentum source terms. The depth-averaged model will be used in future to find the optimal position of wind turbines in the wi...

2001
Ming-Yang Kao Vijay Ramachandran

We propose a mathematical model of DNA self-assembly using 2D tiles to form 3D nanostructures. This is the first work to combine studies in self-assembly and nanotechnology in 3D, just as Rothemund and Winfree did in the 2D case. Our model is a more precise superset of their Tile Assembly Model that facilitates building scalable 3D molecules. Under our model, we present algorithms to build a ho...

Journal: :Gynecologic oncology 2007
Peggy M A J Geomini Sjors F P J Coppus Kirsten B Kluivers Gérard L Bremer Roy F P M Kruitwagen Ben Willem J Mol

OBJECTIVE Patient characteristics, CA125 level and two-dimensional (2D) ultrasonography can be used to predict the probability of malignancy of an ovarian mass. Three-dimensional (3D) ultrasonography might also contribute to the prediction of malignancy. We evaluated whether addition of 3D features to a diagnostic model could improve the discriminative capacity of the model. METHODS This mult...

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