Search

Mobile agent based intrusion detection systems distribute detection agents to prevent system from shutting down when an agent becomes breaks. Because in this system agents are distributed, it can reduce network delay and network load, and each agent can operate independently. Agents can also be easily added or deleted. In this paper we propose an enhanced design of mobile agent based intrusion detection system using Hidden Markov Model algorithm for detection. Hidden Markov Model algorithm is used to detect abnormal behavior pattern by analyzing log information. By adopting this algorithm to the mobile intrusion detection agents, detection performance can be improved. [ABSTRACT FROM AUTHOR]

WS-CDL (Web Services Choreography Description Language), a Candidate Recommendation from World Wide Web Consortium, facilitates the specification of rules to govern the ordering of message exchanges between web service participants. This paper considers a computing environment where a mobile client interoperates with a web service provider according to a WS-CDL specification that defines peer-to-peer interactions, and proposes a framework through which the client can specify its preference on how conversation should take place. The presented framework allows mobile clients to effectively cope with user and device mobility through providing a flexible means to reduce the number of exchanged messages without violating choreography requirement. [ABSTRACT FROM AUTHOR]

OVPN (Optical Virtual Private Network) over IP (Internet Protocol)/GMPLS (Generalized Multi-Protocol Label Switching) over DWDM (Dense Wavelength Division Multiplexing) technology with QoS assurances is considered as a promising approach for the next generation OVPN. In this paper, we suggest a multicast OLSP (Optical Label Switched Path) establishment mechanism for supporting high bandwidth multicast services. For the establishment of the multicast OLSP, we propose a new multicast tree generation algorithm VS-MIMR (Virtual Source-based Minimum Interference Multicast Routing) that finds the minimum interference path between virtual source nodes. We also suggest an entire OVPN control mechanism to adapt the operation of the routing and signaling protocols of GMPLS. [ABSTRACT FROM AUTHOR]

DoS(Denial of Service) / DDoS(Distributed Denial of Service) attacks threaten Internet security nowadays. However, the current Internet protocol and backbone network do not support traceback to know attacker's real location. Many methods to defend DoS/DDoS attack have been proposed. However these kinds of methods cause network overhead because they use many packets to reconstruct an attack path. In this paper we propose effective probability marking methods and a pushback algorithm to reduce network overhead. [ABSTRACT FROM AUTHOR]

Web service technology is a representative means of heterogeneous system integration and communication. Process language standards, such as WS-BPEL and WS-CDL, have accelerated the usability of web services in business area. However, recently emerging web service devices in ubiquitous environments still have a difficulty in coordinating their processes because of the limited computing power and storage. This research proposes a framework of event-based process enactment for ubiquitous web service devices. The framework adopts P2P architecture where devices communicate with one another via web services eventing. The schema of ECA rules and messaging protocol are presented for P2P process enactment so that service devices can interact each other and accomplish their process execution based on the ECA rules. Our proposed framework is expected to be useful in ubiquitous service environments since it enables a scalable and light-weighted process enactment through event-based web service technology. Keywords: Peer-to-peer process, web services eventing, ubiquitous computing, Event-Condition-Action rules. [ABSTRACT FROM AUTHOR]

This paper proposes efficient channel assignment scheme for mobility prediction handover. In future mobile communication networks, the radius of the cell becomes smaller so as to utilize the limited channel efficiently. Because of the smaller radius of the cell, it is difficult to maintain Quality of Service (QoS) on account of occurring the call drop phenomenon and the insufficient channel during the terminal movement. In order to prevent these phenomena, the mobility prediction handover schemes are proposed. However, the problem is the bad effectiveness of the channel because existing channel assignment schemes ignore the mobility prediction handover. The proposed scheme maintains the dropping probability of handover calls, reduce the blocking probability of new calls, and increase utilization of channel. [ABSTRACT FROM AUTHOR]

Alcohol abuse increases mortality by cardiovascular disease and relatively high arteriosclerosis process. The effect of alcohol on body can not be noticed even if there are severe cardiac disorders because it paralyzes judgment and perceptual function of people. Also, alcohol uptake could disturb actions of various drugs that are used for angina pectoris and heart failure. In this research, the change of blood flow rate of normal and alcoholic state was investigated as a method to understand the effect of alcohol on human body. The rate of blood flow was measured using a commercial blood flow rate measurement system. The blood flow rate appears higher in alcoholic persons than normal persons from this measurement. This change is considered to investigate indirectly the effects of alcohol uptake on cardiovascular disease like high blood pressure, ischemic heart disease, etc. [ABSTRACT FROM AUTHOR]