Across the first few years of life, infants readily extract many kinds of regularities from their environment, and this ability is thought to be central to development in a number of domains. Numerous studies have documented infants' ability to recognize deterministic sequential patterns. However, little is known about the processes infants use to build and update representations of structure i...

Mobile Agent (MA) is autonomous software entity which moves from host to host in the open network like internet under its own control. It is once launched its creator or base host has no information about its location until it come back to the creator after completing its itinerary. In multi agent environment where multiple agents are launched, different MAs often need to locate each other in o...

in this paper, a formal model for antivirus update agent system is presented based on mobile agent technology and predicate/transition petri nets. the mobile agent system contains two mobile agents called dca and una. it sends out agents to update antivirus on client computers in a network. each agent takes on a specified responsibility. first, dca roams through the network and check the last d...

A key observation of a time-based location management scheme (TBLMS) is that the simple paging method (i.e., the fastest paging method) does not guarantee to find a mobile terminal, no matter how small the location update cycle is and how big the radius of a paging area (PA) is. Therefore, in addition to cost analysis and optimization, there is one extra issue to deal with in a TBLMS, i.e., the...

Tracking moving objects is one of the most common requirements for many location-based applications. The location of a moving object changes continuously but the database location of the moving object cannot update continuously. Modelling of such moving object database should be considered to facilitate study of the performance and design parameters for this database feature. Such study is esse...

Recent research has shown that by 30 months of age, children can successfully update their representation of an absent object's location on the basis of new verbal information, whereas 23-month-olds often return to the object's prior location. The current results show that this updating failure persisted even when (a) toddlers received visual and verbal information about the prior location but ...

This chapter analyzes and proposes some mobility management models and schemes by taking into account their capability to reduce search and location update costs in wireless mobile networks. The first model proposed is called the built-in memory model; it is based on the architecture of the IS-41 network and aims at reducing the homelocation-register (HLR) access overhead. The performance of th...

Location management is important to effectively keep track of mobile terminals with reduced signal flows and database queries. A system with single home location register and pointer forwarding is assumed. A mobile terminal is assumed to have memory to store the IDs of visitor location registers (VLRs) each of which has the forwarding pointer to identify its current location. To obtain the regi...

Location is the most essential presence information for mobile users. In this paper, we present an improved time-based clustering technique for extracting significant locations from GPS data stream. This new location extraction mechanism is incorporated with Google Maps for realizing cooperative place annotation on mobile instant messengers (MIM). To enhance the context-awareness of the MIM sys...