SOME NUMERICAL ASPECTS OF THE LEVEL SET METHOD

Numerical Simulation of Grain-Boundary Grooving by Level Set Method

A numerical investigation of grain-boundary grooving by means of a level set method is carried out. An idealized polycrystalline interconnect which consists of grains separated by parallel grain boundaries aligned normal to the average orientation of the surface is considered. Initially, the surface diffusion is the only physical mechanism assumed. The surface diffusion is driven by surface-cur...

Some logical and numerical aspects

Artificial Intelligence has received the attentions and contributions of workers in many varied disciplines .. and of many varied interests. As a result there has arisen a large and diverse body of research literature in the field. The task of sorting out and comparing some threads of continuity through this rich and variegated tapestry presents a. tempting prospect. In this article we define a...

the underlying structure of language proficiency and the proficiency level

هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...

Some Probabilistic Aspects of Set Partitions

Some numerical aspects of nonlinear estimation1

Given a nonlinear estimation problem, it is well-known that one algorithm might produce a solution where another algorithm might fail. What is less well-known is that when both algorithms do produce solutions, one of the solutions might be more accurate than the other. In particular, one might give several accurate digits, while the other gives no accurate digits. Possible sources of the phenom...