In this article, we are concerned with the following problem: let X be a Banach space, over the field F (F = C or R), V ⊂ X is an n-dimensional subspace of X and u1, . . . ,um are m linearly independent functionals on X. given x∈X we want to recover x on the basis of the values u1(x), . . . ,um(x)∈ F. Hence we are looking for a map F : X → V such that uj (Fx) = uj (x) for all j = 1, . . . ,m. S...

Electronic communications have become the most important kind of communications in business. However, trust, privacy and security have become the great challenges for business and governments around the globe. The Public Key Infrastructure (PKI) model tries to solve these issues and make the Internet more secure. This paper explains the main purposes of PKI and addresses some of the major issue...

in this paper a new method is proposed for path planning of planar manipulators amid obstacles through mathematical programming in a way that the robot’s links avoid collision with obstacles throughout their motion from an initial to a goal configuration. after inputting the workspace geometry, the shortest feasible path for the robot’s end-effector is planned toward its goal position using gen...

this paper consists of two parts. the first section describes the index and process of globalization and presents kof and a.t. kearney models and index. it also shows the situation of iran in the process of globalization. the results of this section indicate that based on the above mentioned index, iran does not have a good situation in the globalization process (iran’s position is the lowest a...

background: the rapid pace of elderly population growth and higher hospitalization of them has raised the need for an efficient relation between the nurses and elderly patients to promote their health. as there are some obstacles in nurses' relation with elderly patients, this study was implemented to clear nurses’ viewpoints in order to familiar them how to remove these barriers. the present s...

in recent years, various attempts have been made by media managers to achieve a framework to move from conventional newsrooms to convergent newsrooms.so it seems that the recognition of obstacles and barriers faced by newsrooms attaches of great importance. this research is a complete series of these challenges in four categories, including: technological, organizational, cultural and instituti...

this paper aims to address the obstacles of accession of turkey to the european :union: (eu). for this the paper discusses some obstacles in the way of turkey’s application to accede to the european :union: that have caused delay in its membership in eu. the paper explains all the efforts that turkey has made to achieve this goal, on one hand. on the other hand, considering all existing obstacl...

The present note illustrates how logical formalizations of common sense knowledge and reasoning can achieve some of the open-endedness of human common sense reasoning. A plan is made to fly from Glasgow to Moscow and is shown by circumscription to lead to the traveller arriving in Moscow. Then a fact about an unexpected obstacle— the traveller losing his ticket—is added without changing any of ...

We prove that if an object O is convex and fat then, for any two points a and b on its boundary, there exists a path on O’s boundary, from a to b, whose length is bounded by the length of the line segment ab times some constant β. This constant is a function of the dimension d and the fatness parameter. We prove bounds for β, and show how to efficiently find paths on the boundary of O whose len...

Navigation Among Movable Obstacles Mike Stilman Robots would be much more useful if they could move obstacles out of the way. Traditional motion planning searches for collision free paths from a start to a goal. However, real world search and rescue, construction, home and nursing home domains contain debris, materials clutter, doors and objects that need to be moved by the robot. Theoretically...