Geometric constraints are imperative components of many dynamic simulation systems to effectively control the behavior of simulated objects. In this paper we present an improved first-order implicit constraint enforcement scheme to achieve improved accuracy without significant computational burden. Our improved implicit constraint enforcement technique is seamlessly integrated into a dynamic si...

in this paper, a new analytical approach has been presented for solving strongly nonlinear oscillator problems. iteration perturbation method leads us to high accurate solution. two different high nonlinear examples are also presented to show the application and accuracy of the presented method. the results are compared with analytical methods and with the numerical solution using runge-kutta m...

This paper studies the implications of globalization for aggregate output and welfare when risk averse workers face the risk of unemployment. The impact of globalization on the welfare of workers and aggregate output depends on the degree of substitutability between domestic workers and imported inputs. When the degree of substitutability is high (low), then globalization reduces (increases) wa...

let $ m , n in mathbb{n}$, $d$ be a division ring, and $m_{m times n}(d)$ denote the bimodule of all $m times n$ matrices with entries from $d$. first, we characterize one-sided submodules of $m_{m times n}(d)$ in terms of left row reduced echelon or right column reduced echelon matrices with entries from $d$. next, we introduce the notion of a nest module of matrices with entries from $d$. we ...

Genetic aberrations are commonly seen in human preimplantation embryos. Non-disjunction and premature division of a chromosome are common in both meiosis and mitosis divisions. The expected result for meiotic aneuploidies is full aneuploidy in the later stages whereas mosaicism is the most frequent event in the cleavage and blastocyst stages. The main causes for mosaicism are post-zygotic event...

People have different ways of coping with stress, and some turn to cigarettes. It sounds as though you already know that smoking may not be the best way for you to deal with stress. However, as you also pointed out, quitting may continue to be a challenge. Keep in mind though, quitting doesn?t necessarily mean a one-time event; it may be a gradual process that involves a lot of commitment throu...

Copy right Idea Grou p Inc . Copy right Idea Grou p Inc . Many organizations are taking advantage of World Wide Web market opportunities through the development of electronic commerce (E-Commerce) web sites. The implementation of an E-Commerce web site, however, doesn’t guarantee marketing and financial success. In fact, it could adversely impact the organization when the site is viewed as cons...

This paper introduces an Advanced Artificial Potential Field (AAPF) controller which is used to control the robot's motion in cluttered environments. The proposed approach gives less computation and increases the reaction speed of the robot at obstacle avoidance situations. The increasing of robot's reaction speed doesn't affect on the smoothness of its path due to the use of Gen...

IntroductionNew treatments for acute ischaemic stroke, such as mechanical thrombectomy, can achieve reperfusion of large tissue. Some studies have suggested that therapies increase the risk suffering symptomatic seizure (ASS) and poststroke epilepsy (PSE). The aim study was to determine incidence ASS PSE in patients undergoing related factors.Patients methodsThis a retrospective single-centre i...