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In the recent decade, the solid-state transformer (SST) has been extensively investigated for the distribution systems. The basic idea of SST is to reduce the volume and weight of power transformer, as well as improve controllability and power quality of power systems. Among the existing SST topologies, modular multilevel converters (MMCs)-based SST is very promising due to its modularity and scalability,...
Modular multilevel converters (MMCs) have become the most promising converter technologies for medium/high-power applications, specifically for high-voltage direct current (HVDC) transmission systems. For the analysis of the large-scale MMCs-embedded power systems, i.e., multiterminal dc (MTDC) systems and dc grids, modeling and simulation plays an important role in transient and fault analysis. However,...
Construction enterprises are faced with major changes of the construction industry and market, and innovation has become an important development measure for the construction enterprises to cope with the market crisis, expand the living space, and create a new profit point. This paper analyzes the necessity of innovation-driven development of construction enterprises, and puts forward the general...
Signal coordination is one of the most widely employed strategies to efficiently operate signal plans in a network. The impact on a network varies depending on signal plans as well as the spatial shape of coordination groups. Improper coordination groups may worsen the traffic flow and level of service Finding ideal decomposition points of an arterial is critical in a system-wide perspective. This...
This paper presents a model-based Field Programmable Gates Array (FPGA) design for real-time feature extraction of Electroencephalogram (EEG) signals, which can be used for brainwaves bands classification to track and detect mental status in Brain Computer Interface (BCI) applications and consciousness studies. An model-based design approach is used to implement Short-time Fourier Transform (STFT)...
According to the wind speed prediction appeared in data acquisition difficulties, so as to the poor forecast accuracy, this paper proposed the history data of near BP-ANN wind short-term forecast model, with emphasis on BP model of input layer and hidden layer parameters are estimated. In the certain scope, enumerated input layer and hidden layer parameters, and use a large number of data simulation,...
Recently lots of new technologies are introduced at the distribution level, and the distribution system is facing challenges on technology and management during reforming toward an Active Distribution System. The sustainability evaluation (SE) fits the new era better than the conventional reliability and economic evaluation. In this regard, by reviewing recent works on sustainability evaluation, the...
When making 4G sites planning scheme, telecom operators prefer to reuse the existing 2G/3G site resources to reduce capital and operating expenditure. However, 4G is a typical co-frequency interference network with characteristics of hard handover and mode 3 interference. Thus, it is of great significance to identify the high-risk original 2G/3G sites which may cause interference problem. Based on...
In this paper, high order impedance boundary condition (HOIBC) is used to improve the analysis of electromagnetic scattering from dielectric coated bodies of revolution (BOR). The well known PMCHW or JMCFIE method based on the surface integral equation (SIE) are feasible to solve the problem and another useful approach is volume-surface integral equation (VSIE). According to the equivalence principle,...
With the accelerating industrialization and urbanization, the contradiction between urban development and land use in China has become increasingly prominent. Land use has interaction effect with urbanization development, economic standard, land use pattern and ecological environment, and so on. The problem that how to implement smart land use under the background of the rationality of urbanization,...
Beichen district of Tianjin, located in the important node of Beijing-Tianjin golden corridor and high-tech industry area of Jingjintang region, has strong industrial foundations, while it is still faced with the problems that traditional industries account for high proportion of the industrial structure, inefficient use of industrial land, lack of enterprise innovation ability and shortage of resources,...
We present a modified joint trilateral filter based method for depth map refinement. Seeded region growing algorithm and Euclidean distance transform(EDT) are involved for error pixels extraction. With the error information wiped out, a joint trilateral filter method is employed as a hole filling strategy to fill the values. Compared to the basic bilateral filter method, structural similarity index(SSIM)...
We demonstrate a simple head tracked 3D display that is capable of providing motion parallax; the ability to look around objects. This is achieved by using a head tracked display that shows two images only at any particular time. These images can be observed in alternate viewing zones across the viewing field in front of the screen that are fixed in position. The display serves a single viewer and...
Integrated test technology is the research emphasis of improving test and support capability of complex weaponry equipment. In order to solve the Analysis Hierarchical Process (AHP) method research of decision-making information system in the integrated test technology, and then to simplify the decision-making information system structure and improve the efficiency of decision-making, the paper introduces...
As more and more data is outsourced to cloud which is assumed to be a semi-trusted server, it is necessary to encrypt the sensitive data stored in the cloud. However, it brings a series of problems, such as: How to search over the encrypted data efficiently and securely? How should a data owner grant search capabilities to the data users? To solve these problems, we propose two attribute-based keyword...
With the development of the storage medium, such as the emerging of the SSD, the tradition way of data distribution can't keep up with the pace of the storage device development. Specifically, for example, Traditional RAID only enhanced the performance or reliability in the single storage medium and all the data are distributed in the same storage medium. But with the wide range of using raid, the...
Pansharpening is an important tool in remote sensing applications, as earth observation satellites provide both high-resolution panchromatic and low-resolution multispectral images. Many pansharpening techniques have been developed so far. However, most available methods are not effective for the latest very high resolution WorldView-2 satellite imagery. In this paper, we present a novel pansharpening...
Locality Sensitive Hashing (LSH) is proposed to construct indexes for high-dimensional approximate similarity search. Multi-Probe LSH (MPLSH) is a variation of LSH which can reduce the number of hash tables. Based on the idea of MPLSH, this paper proposes a novel probability model and a query-adaptive algorithm to generate the optimal multi-probe sequence for range queries. Our probability model takes...
Trip planning is generally a very time-consuming task due to the complex trip requirements and the lack of convenient tools/systems to assist the planning. In this paper, we propose a travel path search system based on geo-tagged photos to facilitate tourists' trip planning, not only for where to visit but also how to visit. The large scale geo-tagged photos that are public ally available on the web...
Although it has been extensively studied for many years, automatic image annotation is still a challenging problem. Recently, data-driven approaches have demonstrated their great success to image auto-annotation. Such approaches leverage abundant partially annotated web images to annotate an uncaptioned image. Specifically, they first retrieve a group of visually closely similar images given an uncaptioned...
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