Now a day centrifugal pumps are vital components of industries. Certainly, one of the most important specifications of centrifugal pumps are the performance curves. In the present work, performance curves of a centrifugal pumps are obtained by Computational fluid dynamics (CFD) and as an outcome, CFD results compare by practical curves. At the first step impeller and volute are designed with tw...

abstract reference evapotranspiration (eto) is an essential parameter required for proper management of agricultural crop irrigation. eto is influenced by many different hydrological variables and as a result is a very complex procces. eto is usually estimated by empirical or process-orinented models (mathematical relationships) from historical weather data. the need for accurate estimates of e...

Spatial prepositions work as pointers to localize objects in space. For instance “The book is over the table” indicates that the located object (LO) is somewhere “over” the reference object (RO). To understand where the LO is people need to assign direction to space (selecting a reference frame). Three experiments are reported which investigated the reference frame conflict between LO and RO. W...

Localizing tactile stimuli on our body requires sensory information to be represented in multiple frames of reference along the sensory pathways. These reference frames include the representation of sensory information in skin coordinates, in which the spatial relationship of skin regions is maintained. The organization of the primary somatosensory cortex matches such somatotopic reference fram...

The new JVT H.264 video coding standard is becoming the dominant standard, mainly due to its high coding efficiency. Among all modules in the encoder, motion estimation plays a key role since it can significantly affect the output quality of an encoded sequence. However, motion estimation requires a significant part of the encoding time. One reason is because H.264 allows motion estimation base...

In this paper, we propose a novel scalable video coding algorithm based on multiple reference frame method. To improve the coding efficinecy in both base layer and enhancement layer, double reference picture and double motion vector algorithms are employed for motion compensated prediction. Moreover, these two double reference picture and double motion vectot schemes can reduce drift problem, w...

Two experiments examined how locations in environmental spaces, which cannot be overseen from one location, are represented in memory: by global reference frames, multiple local reference frames, or orientation-free representations. After learning an immersive virtual environment by repeatedly walking a closed multisegment route, participants pointed to seven previously learned targets from dif...

This paper presents a real-time video surveillance system which is capable of tracking multiple persons and locating faces in moderately complex scenes. Rather than using heavily parameterized models for the tracking of foreground regions, we suggest the modeling of objects based on the bounding boxes that contain them. The algorithm describes a novel integration of dynamic reference frame diff...

A novel motion representation and estimation scheme is presented that leads to improved coding efficiency of blockbased video coders like, e.g., H.263. The proposed scheme is based on motion-compensated prediction from more than one reference frame. The reference pictures are warped or globally motion-compensated versions of the previous frame. Affine motion models are used as warping parameter...

A novel motion representation and estimation scheme is presented that leads to improved coding e ciency of blockbased video coders like, e.g., H.263. The proposed scheme is based on motion-compensated prediction from more than one reference frame. The reference pictures are warped or globally motion-compensated versions of the previous frame. A ne motion models are used as warping parameters ap...