Consider a (robotic) explorer starting an exploration of an unknown terrain from its base station. As the explorer has only limited communication radius, it is necessary to maintain a line of robotic relay stations following the explorer, so that consecutive stations are within the communication radius of each other. This line has to start in the base station and to end at the explorer. In the ...

In this paper we examine the use of hypotheticals as a heuristic device to assist a case-based reasoner test the strengths, weaknesses, and ramifications of an analysis or argument by exploring and augmenting the space of known cases and indirectly, the at tendant spaces of doctrine and argument. Our program, HYPO, works in the task domain of the law, particularly, the area of trade secret prot...

In this paper, we empirically test the relation between price discrimination and product market competition in a two-sided market environment using a new data set of Spanish local TV stations that provides information on subscription and advertising prices per station for 1996, 1999 and 2002. Due to changes in regulation during this period affecting the degree of local market competition, we us...

Rafael Alonso Matsushita Information Technology Laboratory, 2 Research Way Princeton, NJ 08540 USA [email protected] In a mobile computing environment, a user carrymg a portable computer can execute a mobilf transaction by submilling the operations of the transaction to distributed data servers from different locations. As a result _9f this mobility, the operations of the transaclio...

This paper attempts to measure the performance of the Hyper Text Transfer Protocol (HTTP) (Fielding et al. 1997) in a multiple access, satellite environment. The HTTP client’s access to the Internet is via a shared satellite uplink channel. The multiple access protocols we have chosen to simulate are Slotted ALOHA (Kleinrock and Lam 1975) and Reservation ALOHA (Crowther et al. 1973). We have co...

Energy efficiency is an important issue for mobile computers since they must rely on their batteries. We present a novel MAC protocol that achieves a good energy efficiency of wireless interface of the mobile and provides support for diverse traffic types and QoS. The scheduler of the base station is responsible to provide the required QoS to connections on the wireless link and to minimise the...

This study developed a reinforcement learning-based energy management agent that controls the fine dust concentration by controlling facilities such as blowers and air conditioners to efficiently manage in station. To this end, we formulated an optimization problem based on Markov decision-making process model for predicting of station training artificial neural network (ANN) supervised learnin...

Wireless information networks need to employ small radio cells to support large user populations. However, this will impose extra burden on network traffic control as a result of frequent handover behavior. Existing approaches to support a high handover rate still have cell loss and cell out-of-sequence penalty while the handover is in progress. This paper proposes a novel handover protocol tha...

The system is made with main distributed components: First Level: Industrial Computers placed in Control Room (monitors thermal and electrical processes based on the data provided by the second level); Second Level: PLCs which collects data from process and transmits information on the first level; also takes commands from this level which are further, passed to execution elements from third le...