Wireless local network traces have become an important source of information regarding user activity patterns in the wireless *** on the traces at the University of Southern California,this study investigates the temp...
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Wireless local network traces have become an important source of information regarding user activity patterns in the wireless *** on the traces at the University of Southern California,this study investigates the temporal statistics of inter-arrival time denoting a time interval between two consecutive arrivals at a access point for a *** are the found results that the distribution function of inter-arrival time takes on various forms including exponential form,heavy tail type where the tail can be well fitted by a power-law decaying function and wide power-law form which spans in a wide scale range from several seconds to two days or *** the results indicate that there don’t exist potential,statistically identical arrivals and that simulating network traffic cannot be done with Poisson models.
One of the problems in wireless mesh networks includes the HOL (Head of Line) blocking at relay nodes. To overcome that problem, packet scheduling schemes using the MRTS (Multicast RTS) frame, an extension of the RTS ...
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The paper is focused on fuzzy cognitive maps - abstract soft computing models, which can be applied to model complex systems with uncertainty. The authors present two distinct methodologies for fuzzy cognitive map rec...
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ISBN:
(纸本)9789897580154
The paper is focused on fuzzy cognitive maps - abstract soft computing models, which can be applied to model complex systems with uncertainty. The authors present two distinct methodologies for fuzzy cognitive map reconstruction based on gradient learning. Both theoretical and practical issues involved in the process of a map reconstruction are discussed. Among researched and described aspects are: map sizes, data dimensionality, distortions, optimization procedure, etc. Theoretical results are supported by a series of experiments, that allow to evaluate the quality of the developed approach. The authors compare both procedures and discuss practical issues, that are entailed in the developed methodology. The goal of this study is to investigate theoretical and practical problems, that are relevant in the Fuzzy Cognitive Map reconstruction process.
One of the biggest problems for establishing semantic interoperability is semantic conflicts, which prevent seamless message exchange between heterogeneous Web services. Consequently, numerous work has been done to es...
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This paper describes a vibration analysis system for the examination of the vibration transmitted from the road to the human body in a bicycle with two infant seats. To examine vibrations experienced by a rider and tw...
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We build upon an embodied video chat system, called E-VChat, in which an avatar is superimposed on the other talker's video images to improve the mutual interaction in remote communications. A previous version of ...
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Water is an essential resource in the world and currently household drinking water is an important asset to save the life due to shortage of water in the earth. This paper describes the design and development process ...
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Water is an essential resource in the world and currently household drinking water is an important asset to save the life due to shortage of water in the earth. This paper describes the design and development process of an automatic control system for tap water using floatless water level sensor which can save wastage of water without the presence of any operator physically. This sensing system utilizes a combination of a solenoid valve, electromagnetic relay (a type of electrical switch), floatless level controller (61F) and electrodes (used to sense the watery level electrically). The developed system can automatically control the water tap accordingly when level sensor can sense the lower level of water tank. Also, the system has ability to activate the relay which starts solenoid valve. The entire process can continue until sense the upper level of water. After that the system deactivates the relay as well as the solenoid which can stop the water flow through tap, when the upper level is sensed. In summary, the developed system is able to control the water tap to protect the wastage of valuable water by this mechanism. This system is low-cost compare to other commercial systems, was tested to assess the success rate of the development The result shows an autonomous plus robust monitoring system with satisfactory result which is relatively simple to install.
In the existing adaptively secure ABE (attribute-based encryption) schemes, the decryption cost goes linearly with the number of attributes that are used in decryption. An adaptively secure key-policy ABE (FKP-ABE) sc...
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