One of the modern paradigms to develop a system is object oriented analysis and design. In this paradigm, there are several objects and each object plays some specific roles. There is a sequence of activities to develop an analysis model. In the first step, we work in developing an initial use case model. Then in the second step, they identify a number of concepts and build a glossary of partic...

How might varying spatial organization improve memory for sets of objects? In this experiment simple line drawings of everyday objects were placed in grids that were regularly or irregularly organized at either a local or a global level, to give 4 layouts of stimuli that varied in the distinctiveness of their spatial organization of objects. Nineteen university students took part in six success...

Visual context is used in different forms for saliency computation. While its use in saliency models for fixations prediction is often reasoned, this is less so the case for approaches that aim to compute saliency at the object level. We argue that the types of context employed by these methods lack clear justification and may in fact interfere with the purpose of capturing the saliency of whol...

First we review an analysis of conditions that should be met if features are to provide robust inferences about world properties. Features meeting these conditions provide indices into especially useful categories of visual properties. Then we show that for a given set of elemental concepts the categories associated with these properties have a natural hierarchical (specialization) structure. W...

In this thesis, I studied the lensed quasar CX2201-3201, which is lensed by an edgeon spiral galaxy. The unusually high tilt of the spiral galaxy provides us with a rare opportunity for mass modeling. In addition, the unusual placement of the two visible images of the system offers an intriguing lensing system for study-the two images straddle the lensing galaxy's visible disk, but are off to o...

This paper is a further development of the approach to weak cosmic censorship proposed by the authors in Ref. [5]. We state and prove a modified version of that work’s main result under significantly relaxed assumptions on the asymptotic structure of space–time. The result, which imposes strong constraints on the occurrence of naked singularities of the strong curvature type, is in particular a...

Object detection plays an important role in successfulness of a wide range of applications that involve images as input data. In this paper we have presented a new approach for background modeling by nonconsecutive frames differencing. Direction and velocity of moving objects have been extracted in order to get an appropriate sequence of frames to perform frame subtraction. Stationary parts of ...