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Software-Defined Networking (SDN) supports programmability by refactoring the network control plane. An SDN logically centralizes the control plane of network entities at the controller level. To achieve scalability, reliability, and availability, it is inevitable for the control plane to be configured as physically distributed. However, current deployments adopt a single SDN controller mainly due...
To solve the problem of congestion which often occurs in the process of the large data transmission in large-scale wireless senator networks, a multipath routing protocol based on congestion control mechanism implemented by cross-layer design concept is proposed. Realizing the multipath routing protocol on the basis of AODV protocol, congestion control mechanism with active congestion avoidance, real-time...
Silicon physical unclonable function (PUF) exploits the random variation in the manufacturing process to extract unique information for each chip. Ring oscillator PUF (RO-PUF) is easy to implement for both ASIC and FPGA, and it becomes one of the most popular techniques to build a PUF. However, the unwanted systematic process variation degrades the randomness and uniqueness of RO-PUF. To reduce the...
As a distributed MapReduce framework, Hadoop has been widely adopted in big data processing, in which HDFS (Hadoop Distributed File System) is mostly used for data storage. Though the single master architecture of HDFS simplifies the design and implementation, it suffers from issues such as SPOF (Single Point Of Failure) and scalability, which further may become performance bottleneck. To address...
The Wireless Sensor Converge-cast Networks (WSCNs) are widely applied in many fields such as medical applications and environmental monitoring. The monitoring data are collected from the sensors and gathering toward the sink node. A coding aware routing scheme based on Connected Dominating Set is provided. Based on CDS, a coding condition, named Improved Coding Conditions (ICC), is defined with an...
Community detection is an important way to analyze and understand the real networks. In this paper, we not only define Local community modularity and Tightness between local communities for directed weighted networks, but also realize a distributed algorithm that detects overlapping local community in networks. The algorithm is divided into two parts, initial local community detection and similar...
The purpose of this research is to investigate the factors influencing satisfaction on e-tax filing (e-Revenue) of SMEs in Thailand. The data were collected from 415 respondents using the service. The website service quality dimensions in this study consist of information quality, system quality and service quality. The related hypotheses were tested using structural equation modeling. The researcher...
Reliability information derived from the channel output in the form of a Log Likelihood Ratio or a Distance Metric (DM) have been proposed in literature for M-ary Quadrature Amplitude Modulation systems. Reliable soft information from the channel output improves the performance of the forward error correction decoding algorithm. This paper proposes an improved method of extracting reliability information...
Reputation of Web service plays an important role in selecting the best service from massive services. Traditional approaches of measuring Web service reputation are based on all the historical ratings. Although these approaches are effective in the same context environment, they fail in obtaining accurate reputation measurement when users' context is different. In this paper, we propose a context-based...
With gaining the benefit of the cross-language and cross-platform characteristics of Service-Oriented Computing (SOC), Service-Oriented Multi-Agent System (SOMAS) has attracted many researcher's attention. SOMAS gives intelligent and autonomous properties to overcome the limitations of SOC such as hardly adaptive to the open and dynamic environment. In this paper, we focus on the service reliability...
Chroma-keying is an important technique for image/video background replacement, which is heavily used in film production, video game industry and news casting. In chroma-keying system, the foreground objects are shot in front of solid color background. In conventional chroma-keying systems, difference and clustering based algorithms are mainly used to separate foreground from background. However,...
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