In computer networks nowadays, high-speed routers are compulsory to deliver the incoming packet to its destination. There are two parameters that exist in all lookup techniques that directly affect performance results...
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In computer networks nowadays, high-speed routers are compulsory to deliver the incoming packet to its destination. There are two parameters that exist in all lookup techniques that directly affect performance results: data structure size and number of lookup table accesses. With these remarks in mind, the specific goals of this paper are: (i) Design a data structure for storing an IP lookup table that enhances the lookup process, (ii) Produce an IP lookup algorithm that has a bounded worst-case number of accesses lower than contemporary techniques, and (iii) Improve updating and deletion operations that do not create a bottleneck to efficient forwarding. This paper investigates a suitable data structure of the routing table in order to minimize the total routing time. The investigated structure of the routing table is based on RapidBase technique. It contains all the information necessary to forward an IP data packet toward its destination. The properties of the created routing table facilitate searching for the best matching prefix quicker than when using the current routing table where packets do not have to be queued before lookup. Additionally, the proposed algorithm's effectiveness is deliberated via simulation. A comparative study with recently published algorithms shows that our proposed scheme has a great impact on shortening the route lookup and update operations. For more enhancements, combinations of the proposed algorithm with the most popular algorithms are also studied.
Eye movements have the goal of optimizing visual perception, therefore the investigation of eye motion strategies play an important role in the design of humanoid robot eye systems. Saccades in humans and primates is ...
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ISBN:
(纸本)1424401992;142440200X
Eye movements have the goal of optimizing visual perception, therefore the investigation of eye motion strategies play an important role in the design of humanoid robot eye systems. Saccades in humans and primates is a significant class of ocular motions, which obey the so called Listing's Law, which constrains the admissible eye's angular velocities and ensure zero torsion during motion. In this paper we present a model of the eye plant proving that listing's law implementation is strongly related with the geometry of the eye and its actuation system (extraocular muscles). The proposed model has been used to provide the guidelines for the design of a tendon driven humanoid robot eye. Experimental tests, presented in this paper, validate the model by performing a quantitative comparison of the performance of the robot eye with physiological data measured in humans and primates during saccades
The goal to control the dynamics of high-rise buildings either to ameliorate the damage or prevent their destruction when subject to an earthquake excitation has been subject of extensive research. All known control d...
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The modeling of domains is today a technique with growing acceptance into the software community. Domain models allow the information to be represented in the computer at higher abstraction levels than in the usual ap...
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The modeling of domains is today a technique with growing acceptance into the software community. Domain models allow the information to be represented in the computer at higher abstraction levels than in the usual applications, so improving the human to machine and machine to machine interactions. This paper deals with the application of such modeling paradigm to the controlengineering education field, showing how the knowledge of this domain can be represented in a conceptual structure called ontology which is used as the base for building an Intelligent Tutoring System, a software tool used in the emerging field of e-learning.
The main function of a reactor protection system is to maintain the reactor core integrity and the reactor coolant system pressure boundary. Generally, the reactor protection system adopts the 2-out-of-m redundant arc...
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The main function of a reactor protection system is to maintain the reactor core integrity and the reactor coolant system pressure boundary. Generally, the reactor protection system adopts the 2-out-of-m redundant architecture to assure a reliable operation. This paper describes the safety assessment of a digital reactor protection system using the fault tree analysis technique. The fault tree technique can be expressed in terms of combinations of the basic event failures such as the random hardware failures, common cause failures, operator errors, and the fault tolerance mechanisms implemented in the reactor protection system. In this paper, a prediction method of the hardware failure rate is suggested for a digital reactor protection system, and applied to the reactor protection system being developed in Korea to identify design weak points from a safety point of view.
This paper proposes a density based clustering algorithm which takes obstacles into consideration. The proposed Clustering with Obstacle Entities algorithm COE-DBSCAN is based on the DBSCAN algorithm, which performs e...
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Decision trees have been found very effective for classification especially in data mining. Although classification is a well studied problem, most of the current classification algorithms need an in-memory data struc...
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In this paper, we focus on the issue of adaptive H∞- control design for a class of linear parameter-varying (LPV) systems based on the Hamiltonian-Jacobi-Isaac (HJI) method. By combining the idea of polynomially para...
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