When performing oscillatory movements of two joints in the sagittal plane, there is a directional constraint for performing such movements. Previous studies could not distinguish whether the directional constraint reflected movement direction encoded in the extrinsic (outside the body) reference frame or in the intrinsic (the participants' torso/head) reference frame since participants performe...

In this paper, we present the method of localization system that uses iGPS (indoor GPS) sensor and Omni-directional vision sensor in the environment involving land mark. The indoor GPS (iGPS) is a simple and cheap localization sensor in the indoor environment. However, the error range of iGPS is too wide to be used in a small size robot. This paper presents a more accurate method of localizatio...

Crime scene forensic evidence may include audio gunshot recordings obtained from some known or assumed location with respect to the shooting position. The acoustic evidence of the gunshot depends significantly upon the relative orientation of the firearm's barrel and the recording microphone due to the inherent directional characteristics of the gun, the microphone, and the acoustical character...

Inadequate hole cleaning can lead to many problems in horizontal and directional wells. In this work, we tried to investigate the cutting transport phenomenon by an experimental directional drilling simulator, considering the differences between the operational and experimental conditions. The inclination, fluid type (water, foam, viscous, and dense), rotary speed (0 and 110 rpm), nozzle bit si...

In this paper, we present the method of localization system that uses iGPS (indoor GPS) sensor and Omni‐directional vision sensor in the environment involving landmark. Self‐assembly robots need to know its own position to assemble to other robot. The indoor GPS (iGPS) is a simple and cheap localization sensor to adapt self‐assembly robots in the indoor environment. However, the error range of ...

In order to cope with the ambiguity of spatial relative position concepts, we propose a new definition of the relative position between two objects in a fuzzy set framework. This definition is based on a morphological and fuzzy pattern-matching approach, and consists of comparing an object to a fuzzy landscape representing the degree of satisfaction of a directional relationship to a reference ...

The importance of describing relationships between objects has been highlighted in works in very di0erent areas, including image understanding. Among these relationships, directional relative position relations are important since they provide an important information about the spatial arrangement of objects in the scene. Such concepts are rather ambiguous, they defy precise de2nitions, but hum...