One of the main problems in the field of mobile robotics is the estimation of the robot’s position in the environment. Position probability grids have been proven to be a robust technique for the estimation of the absolute position of a mobile robot. In this paper we describe an application of position probability grids to the tracking of the position of the robot. The main difference of our me...

results the mean duration of esophagectomy was 70 minutes and the total operation 180 minutes. the mean amount of bleeding during surgery was 250 cc. conversion to open approach occurred only in one patient out of 15. no cases of anastomotic leakage or pneumonia was observed. also, no case of mortality was reported. patients and methods this is a prospective study of 15 selected patients who un...

Discrete populations of brain cells signal differing types of spatial information. These "spatial cells" are largely confined to a closely-connected network of sites. We describe here, for the first time, cells in the anterior claustrum of the freely-moving rat encoding place, boundary and object information. This novel claustral spatial signal potentially directly modulates a wide variety of a...

0 NE of the troublesome problems in the field of electrocardiography is to decide whether certain peculiarities in the tracings are due to abnormalities of the myocardium or to nothing more than an unusual position of the heart. Difficulties of this kind occur in connection with the interpretation of both limb and precordial leads and may limit the value of the records considerably. This paper ...

extract  in this study, position of fetus were examined in the different weeks of pregnancy and their association with fetus presentation in during labor. the study group included women who had normal condition. the aim of this study include:   1- to determine the distribution normal position of fetus before birth.   2- to determine the possibility of concurrent position of fetus in during preg...