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In multi-hop wireless networks where links are prone to be broken or degraded, it is important to guarantee the network connectivity as well as satisfy the performance requirements. Observing the promising features of Multiple-Input Multiple-Output (MIMO) techniques for improving the transmission capacity and reliability, in this paper, we make the very first attempt to deploy MIMO nodes as relays...
Internet-based users innovation community can be defined as mediated social spaces in digital environment that allow groups to form and be sustained primarily through ongoing communication processes. The members of innovation communities are usually lead users of specific kind of products, they put up web sites or participate in the existent one hosted by manufacturers or the third part for the purpose...
Feature extraction plays an essential role in Hyperspectral image classification. Linear discriminant analysis (LDA) is a commonly used feature extraction (FE) method to resolve the Hughes phenomenon for classification. The Hughes phenomenon (also called the curse of dimensionality) is often encountered in classification when the dimensionality of the space grows and the size of the training set is...
Linear discriminant analysis (LDA) is a commonly used feature extraction (FE) method to resolve the Hughes phenomenon for classification. The Hughes phenomenon (also called the curse of dimensionality) is often encountered in classification when the dimensionality of the space grows and the size of the training set is fixed, especially in the small sampling size problem. Recent studies show that the...
With the popularity of wireless devices and the increase of computing and storage resources, there are increasing interests in supporting mobile computing techniques. Particularly, ad hoc networks can potentially connect different wireless devices to enable more powerful wireless applications and mobile computing capabilities. To meet the ever increasing communication need, it is important to improve...
Support vector machine (SVM) is one of the most powerful techniques for supervised classification. However, the performances of SVMs are based on choosing the proper kernel functions or proper parameters of a kernel function. It is extremely time consuming by applying the k-fold cross-validation (CV) to choose the almost best parameter. Nevertheless, the searching range and fineness of the grid method...
In this study, a novel classifier ensemble method named adaptive feature extraction (AdaFE) with reject region is proposed for hyperspectral image. This new concept is deduced from the concepts of reject region and feature extraction. The main idea is adaptive in the sense that subsequent feature spaces are tweaked in favor of those reject regions by Gaussian or knn classifiers in the previous feature...
In recent years, we have seen a surge of interest in enabling communications over meshed wireless networks. Particularly, supporting peer-to-peer communications over a multi-hop wireless network has a big potential in enabling ubiquitous computing. However, many wireless nodes have limited capabilities, for example, sensor nodes or small handheld devices. Also, the end-to-end capacity and delay degrade...
The advance of business-to-business commerce has result in the establishment of many types of electronic marketplace. This paper focuses on a market exchange as the "secondary market" for the perishable goods-that is, for the resellers to disposal and acquisition of excess perishable goods inventory. Follow the method of Lee and Whang(2002), we develop a model of secondary market in the...
Multiple-input and multiple-output (MIMO) technique is considered as one of the most promising emerging wireless technologies that can significantly improve transmission capacity and reliability in wireless mesh networks. While MIMO has been widely studied for single link transmission scenarios in physical layer as well as from MAC perspective, its impact on network layer, especially its interaction...
Multiple-input and multiple-output (MIMO) technique is considered as one of the most promising wireless technologies that can significantly improve transmission capacity and reliability. Many emerging mobile wireless applications require peer-to-peer transmissions over an ad hoc network, where the nodes often have different number of antennas, and the channel condition and network topology vary over...
The objective of this research is to reveal the mechanisms associated with the initial formation of people's trust in online banking and intention to use the service. And this research fills a research gap by focusing on offline to online trust transfer process, which has received almost no attention. For this, we attempt to understand the effect of three antecedent factors (structural assurance,...
The objective of this research is to reveal the mechanisms associated with the initial formation of peoplepsilas trust in mobile banking and intention to use the service. And this research fills a research gap by focusing on online to mobile trust transfer process, which has received almost no attention. For this, we attempt to understand the effect of three antecedent factors (structural assurance,...
The objective of this research is to reveal the mechanisms associated with the initial formation of peoplepsilas trust in mobile banking and intention to use the service. And this research fills a research gap by focusing on online to mobile trust transfer process and the effects of previous satisfaction, which has received almost no attention. For this, we attempt to understand the effect of three...
The advance of business-to-business commerce has resulted in the establishment of many types of electronic marketplaces. This paper focuses on a market exchange as the ??secondary market?? for perishable goods-that is, for the resellers to dispose and acquire excessive perishable goods inventory. This research investigates the quantity effect of the electronic secondary market on the perishable goods...
In MIMO-OFDM systems, antenna selection algorithms are used to find a subset of transmit antennas subject to channel variation, which provide the highest system capacity or the best BER performance with a given low computational complexity. In this paper, the optimum transmit antenna selection algorithm for MIMO-OFDM systems is firstly presented, then two suboptimum selection algorithms are proposed,...
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