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Study of learner-oriented mobile learning (m-learning) instructions based on classification of student m-learning strategies has aroused much attention over the last decade. Due to the multivariate nature of students' learning strategies, traditional classification methods often fail to produce reliable classification results. In this paper, a new classification method based on Principal Component...
Trust decision made by sensor nodes and its dynamics constitute building blocks to secure and stabilize the whole Wireless Sensor Networks (WSNs). To disclose this evolutionary process, we study the dynamics of a sensor node making a trust decision that will determine whether to cooperate with others. A trust game for sensor nodes is created to reflect sensor nodes' utilities during their trust decisions...
With regard to the fuzziness of limit state in the deep sliding stability of gravity dams, the fuzzy response surface method is put forward to analyze the reliability, including algorithm of fuzzy response surface method and determination of membership function. The concept of primary limit state and subordinate limit state is proposed for the fuzzy response surface method. The safety factor is endowed...
We propose a variant of the well-known Lenstra, Lenstra, Lovász algorithm (LLL) for MIMO detection in this paper, which is called random selection LLL (RSLLL). Not like the original LLL algorithm which sequentially searches through the whole basis, the new algorithm takes a random selection of the next pair of columns for LLL reduction. The proposed algorithm is proved to finish within finite number...
The performance evaluation of supply chains is the key of effective supply chain management, which is not only helpful to describe and analyze the historical performance and status, but also can be used to set performance targets and determine the future focus. The paper, according to the shortcomings of existing fuzzy comprehensive evaluation models, eliminated the redundant data in index membership...
The respective operation performance of node enterprises and the coordination performance between them commonly constitutes the internal performance of the supply chain. The custom satisfaction degree, which depends on the products and service provided by the supply chain system to the ultimate customers, determines the external performance. The existing studies on performance evaluation of supply...
It is an important way to optimize the rural economy structure, and boost the rural economy developing, as well as be an important aspect in new socialist countryside construction to develop rural logistics industry. It has important practical significance to study modern logistics system in rural areas. The paper applied rough set theory to analyse the evaluation index system of modern rural logistics...
Promoting harmonious of the relationship between man and nature and taking the road of green development have become a new model of urban development. Considering city's scientific development from the point of energy saving, emission reduction and economic development, the paper built an evaluation index system of urban green development and carried out the weight analysis of every index with analytic...
Agriculture is the basic industry of the national economy, and agriculture is a so important industry especially for China. Therefore, the healthy development of agriculture and rural economy affects the overall situation of our national economy. It has important practical significance to study modern logistics system in rural areas. The core of fuzzy comprehensive evaluation on modern rural logistics...
Agricultural products network marketing means fully introducing e-commerce systems into the sale process of agricultural products, using information technologies to publish and collect the demand and price information, and relying on agricultural production bases and logistics distribution systems to enhance brand images, improve customer services, develop online marketing channels and ultimately...
The core of fuzzy comprehensive evaluation is membership degree transformation. But the existing transformation methods should be questioned, because redundant data in index membership degree is also used to compute object membership degree, which is not useful for object classification. The paper applied an improved algorithm for membership degree transformation in fuzzy evaluation on urban green...
Agriculture is the basic industry of the national economy, and agriculture is a so important industry especially for China. Therefore, the healthy development of agriculture and rural economy affects the overall situation of our national economy. It has important practical significance to study modern logistics system in rural areas. The core of fuzzy comprehensive evaluation on modern rural logistics...
Investment risks assessment of high-tech projects is a more complex process, involving various factors and it is not entirely the linear relationship between influencing factors and measurement results. Artificial neural network (ANN) has a strong nonlinear mapping ability, with strong learning ability and high classification and prediction accuracy. The paper applied ANN to establish a new risk assessment...
Software maintainability means the ease with which a software system or component can be modified to correct faults, improve performance or other attributes, or adapt to a changed environment. For different software maintenance organizations or personnel, there are different concerns on software maintainability. If any one of the factors affecting the maintainability has not been completely resolved,...
In the evaluation process of digital libraries, there are many aspects needing to consider, with a lot of uncertainty and ambiguity, so it is reasonable and scientific to apply fuzzy comprehensive evaluation method for digital library fuzzy evaluation. The core of fuzzy evaluation is membership degree transformation. But the existing transformation methods should be questioned, because redundant data...
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