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Chapter and Conference Paper
Multi-band Wavelet Based Digital Watermarking Using Principal Component Analysis
This paper presents a novel watermarking scheme based on multi-band wavelet. Different from many other watermarking schemes, in which the watermark detection threshold is chosen empirically, the false positive...
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Chapter and Conference Paper
3D Non-rigid Surface Matching and Registration Based on Holomorphic Differentials
3D surface matching is fundamental for shape registration, deformable 3D non-rigid tracking, recognition and classification. In this paper we describe a novel approach for generating an efficient and optimal c...
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Chapter and Conference Paper
A Brief Discussion on the Method and Key Technology of Using ZY-3
Digital orthography (DOM) is an important 4D map** product. In this paper, according to the characteristics of ZY-3 satellite image, the technical process of making orthophoto image based on ZY-3 satellite i...
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Chapter and Conference Paper
Discussion on Sedimentary Facies Modeling Method of Tidal Delta Reservoir
The ST gas field is widely developed with sand bodies of tidal delta plain and front, and the distribution law is complex. Combined with core, well logging, and seismic data, the sequential indicator simulatio...
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Chapter and Conference Paper
Responses of Adjacent Building Pile to Foundation Pit Dewatering
In water-rich area, foundation pit pum** has adverse effects on adjacent buildings. In this study, a series of numerical simulations are carried out, based on a practical dewatering test in an excavation for...
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Chapter and Conference Paper
Characteristics and Development Work Emphasis of Thin-Layer Low-Resistivity Subtle Reservoir – A Case Study of DK Oilfield
Thin-layer low-resistivity subtle reservoir is a kind of complex reservoir, accounting for large proportion in the currently developed oilfields. Predictably, this kind of reservoir will become more important ...
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Chapter and Conference Paper
A Novel Control Strategy for Series Converter of VFT Under Dual-Side Harmonically Distorted Grid Voltages
Variable frequency transformer (VFT) is a feasible equipment for asynchronous interconnection of power grids. However, VFT is easy to be disturbed by power grids. This paper intends to improve the operation of...
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Chapter and Conference Paper
Improving Transmittable Active Power Capability of VFT with Optimal Stator Reactive Power Reference
The variable frequency transformer (VFT) is a new type of flexible AC transmission system equipment to achieve the interconnections of asynchronous power grids, whose transmittable active power capability is o...
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Chapter and Conference Paper
Research on Adaptability of Downhole Two-Stage Series Hydrocyclone Separation Technology
In view of the disadvantages of the separation technology in the same well injection -production technology, the downhole two-stage series hydrocyclone separation technology is put forward in order to overcome...