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The development of high voltage technology provides technical conditions for the transmission of offshore new energy, but it is necessary to consider the operation status of power grid when we decide the way of grid connection. This paper focuses on the stability of the system and evaluates three access form — the high voltage alternating current (HVAC), traditional direct current (DC) and flexible...
Support vector machine (SVM) plays an important part in fault diagnosis of chemical plant, and intelligent optimization algorithms are used to optimize the SVM parameters, including the penalty parameter C and parameter g of different kernel function, to improve performance of its faults classification. To assess SVM faults classification capability based on diverse optimization algorithms and various...
Intrusion Detection System (IDS) is considered as one of the most effective security mechanisms in wireless networks. However, nodes which are used to monitor the network abnormal behaviors will carry out amount of overhead and degrade network performance. In this paper, we propose a monitor node selection algorithm based on mutual information to solve the above issue. In the algorithm, we consider...
High GDP growth coupled with extensive power consumption of users lead to the rapid growth of peak load, causing the increase of the gap between peak and valley load and the dropping of the power utilization. In order to reduce peak-valley load difference and improve load rate effectively, this paper proposed a new idea for peak load shifting management faced with smart grid. The paper uses big data...
In present paper, to effectively improve the accuracy of burnt scar mapping in hilly areas, a new method by combing multiple spectral indices with Support Vector Machines (SVM) has been put forward. Firstly, the Landsat TM image was geometrically and atmospherically corrected. Secondly, two widely used thematic-oriented spectral indices, namely, the vegetation index SAVI and the water index MNDWI...
Differential evolution (DE) is a simple and efficient evolutionary algorithm. It contains three parameters which need to be predefined by users. These parameters are sensitive to specific problems and difficult to set. Opposition-based computing (OBC) is a new scheme for computational intelligence. OBC is helpful to existing techniques by making better decisions through simultaneous consideration...
In this paper, we study the joint resource allocation for the multi-destination amplify-and-forward relay network with direct source-to-destination links based on orthogonal frequency division multiplexing (OFDM) transmission. We aim to maximize the sum rate by jointly optimizing power allocation, subcarrier pairing, user assignment and transmission mode classification subject to the individual power...
The exact nature of the association between thecontext of the local area and local health outcomes is unknown. We investigated whether areas geographically close but divergentin terms of deprivation have greater inequality in health thanthose where deprivation is similar across neighbouring localities. In order to disaggregate the strong correlation between the deprivationof a target area and that...
Since subjectivity of opinions can be more effectively manipulated in the framework of fuzzy set theory, it is promising way to aggregate experts' judgments using fuzzy set theory. In this short paper, a simple method to aggregate experts' opinions is proposed. In our method, the multiplication operation on fuzzy numbers based on graded mean integration representation is used to simple the aggregation...
Two models are examined in this study: Vector Autoregressive Model (VAR) and Vector Error Correction Model (VECM). Based on three indices: S&P 500, Nikkei 225 (NIKKEI), and Morgan Stanley EAFE (MSCIEAFE or MSCI EAFE) Index, we implement VAR and VECM models, including the pre-estimation diagnostics, model estimation and interpretation and post-estimation tests, etc. By testing, we find that while...
In this paper, the author investigates root's soil mechanics' mechanism and influencing factors of a typical soil reinforcing plant- Hippophae rhamnoides Linn. in the area that has been destroyed by wind and water. This investigation has been done from two aspects: shear strength of root-soil composite and friction characteristic of root-soil interface. The results show that when the root diameter...
With the development of the optical fiber communication, the PLC communication gradually changes to be an auxiliary method in the electric power communication. Most power line carrier channels have been already replaced by the fiber channels, and a lot of free line traps have increased the electric energy loss. This paper applies graph theory to establish a graphical modeling, and uses the breadth-first...
As a small-scale renewable energy source, micro-hydropower can substitute fossil fuel to relief the energy shortage and acquire comprehensive benefits for the society, ecology as well as economy in mountain areas. However, the development and promotion of micro-hydropower are constrained by inferior management level and limited understanding on its benefits, of which only direct economic benefit is...
For the purpose of reducing calculation complexity, the smooth support vector regression (SSVR) is put forward to improve the support vector regression algorithm. In this paper, SSVR is used to make furnace combustion state time series analysis model. In the analysis of the furnace combustion state time series based on SSVR, the influence of different kernel functions and parameter epsiv on the model...
A water-soluble polysaccharide (IOPS) was isolated from the Inonotus obliquus (Fr.) Pilat, which was a medicinal mushroom with many health-benefiting functions. The chemical composition and acute toxicity of IOPS was investigated in order to determine the possibility of using them for human consumption. Chemical analysis of IOPS showed that it was a nonstarch protein bounded acidic polysaccharide...
Studying the optimal subsection of distribution networks feeders, a subsection scheme synthesizing load and the length of subsections is presented. Hierarchical data envelopment analysis (DEA) method is proposed for multi-objective evaluation of subsection schemes. First, the scientific assessment system is established by using the analytic hierarchy process (AHP) and the weights of assessment criteria...
Based on extension theory, performance index and matter-element model of comprehensive evaluation for embedded system were established by analyzing basic characteristic, composition principle and application category of embedded system. Through calculating its comprehensive correlation degree, multiple index evaluation was formulated as the simple target decision. It obtained performance comprehensive...
This paper presents a new algorithm to estimate the cyclo-period of a poly-cyclo-stationary signal. The algorithm is essentially based on the time-varying correlation and the variability method; a calculation of the sample variance ratio as a function of the modulated noise variance visually reveals a regular pattern, from which the poly-cyclo-period is obtained. Properties of the estimation method...
In the increasingly fierce competition in the context of the Web site, E-commerce Website evaluation is an important basis and means to understand the E-commerce website's value, find Website's pros in comparison and guide Website's constitutes. This paper reviews the related evaluation index systems and evaluation methods for E-commerce Websites at home and abroad, and made a new E-commerce Websites...
The steering feel study is very important in the development of electric power steering system (EPS). This paper describes a method about how to evaluate and get the suitable steering feel when driving a vehicle equipped with EPS. The EPS steering feel subjective tests were performed to obtain objective quality parameters that correlate with subjective evaluation. After this, the paper briefly describes...
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