Internet protocols have moved from host centricity, which involves looking for a specific host, to data centricity, which involves looking for specific data. Data location in MANET is incipient. The unstructured and dynamic nature of MANETs makes object location a difficult problem. Structured object location techniques for the Internet, such as Tapestry, Pastry, etc., do not apply well to ad h...

In this paper we address two important problems in motion analysis: the detection of moving objects and their localization. Statistical and level set approaches are adopted in order to formulate these problems. For the change detection problem, the inter-frame di erence is modeled by a mixture of two zero-mean Laplacian distributions. At rst, statistical tests using criteria with negligible err...

When attention is directed to a location within an object, other locations within that object also enjoy an attentional advantage. Recently we demonstrated that this object-based advantage is mediated by increased attentional priority assigned to locations within an already attended object and not to early sensory enhancement due to the "spread" of attention within the attended object (Shomstei...

We present a model of object location memory developed within the ACT-R cognitive architecture and compare the model’s performance to that of human participants in a modified version of the toy test. The results of the experiment reveal that the accuracy of location recall is significantly affected by both the number of objects in the set and the order in which objects are selected for relocati...

This study investigated whether "intentional" instructions could improve older adults' object memory and object-location memory about a scene by promoting object-oriented viewing. Eye movements of younger and older adults were recorded while they viewed a photograph depicting 12 household objects in a cubicle with or without the knowledge that memory about these objects and their locations woul...

Aging is accompanied by an impairment of associative memory. The medial temporal lobe and fronto-striatal network, both involved in associative memory, are known to decline functionally and structurally with age, leading to the so-called associative binding deficit and the resource deficit. Because the MTL and fronto-striatal network interact, they might also be able to support each other. We t...

The ability to remember where objects were is thought to require multiple separate processes. One has to encode the precise positions occupied, assign the various objects to the correct (relative) locations, and achieve an integration of both types of spatial information. This study examined whether sex differences exist for these selective components of object location memory. Twenty males and...

Distributed object applications rely heavily on distributed systems and objects. Solutions using CORBA with its location transparency are inefficient and do not scale for high-throughput networked applications. Our work addresses these inefficiencies by creating a mechanism enabling applications to influence the system’s object location policies on an object-by-object basis.We also provide an a...

In this project, I aim to locate objects in a room using a wireless sensor network of ultrasonic rangefinders. The goal is to accomplish object localization using computationally cheap sensors, such as the ultrasonic rangefinders, without requiring any tagging or modification to the object being tracked, i.e., requiring invasive techniques. To approach this problem through rapid prototyping, I ...