可见光与红外图像自适应加权平均融合方法

针对传统可见光图像与红外图像融合存在显著性信息保留不完整的问题,本文提出了一种新的自适应加权平均融合算法。首先,该方法通过非下采样轮廓波变换将源图像分解为不同尺度、不同方向的高低频分量。然后,针对低频分量的特点提出了一种基于显著性的自适应加权平均融合规则,用于保留源图像中的重要信息。对于高频分量,本文采用绝对值取大的融合策略。最后,根据融合后的高低频分量重构出最终的融合图像。实验结果表明,本文算法与传统融合算法相比,在主观视觉和客观指标上都具有优势。

Plasma Surface Treatment of BOPP Film by Dielectric Barrier Glow Discharge in Argon/Air

A plasma surface treatment of biaxially oriented polypropylene (BOPP) film was carried out with dielectric barrier glow discharge (DBGD) in Ar/air. The paper studied the effects of the ratios of Ar/air plasma on the BOPP surface modification. The results indicated that the efficiency of the plasma surface modification was improved with increasing treatment time and power density with DBGD in Ar/air. The water contact angle increased first and then decreased with the increase of the Ar/air mixture rate. The DBGD gives a better surface modification than filament discharge. The ageing behavior was influenced by the mixture rate of Ar/air, but the water contact angle of the treated sample was always less than that of un-treated sample.

An Improved Method of the Energy Loss Calculation Considering the Volatility of Wind Power Generation

The energy loss of the power grid is one of the key factors affecting the economic operation of power systems. How to calculate the electric energy consumption accurately will have a great influence on the planning, operation and management of the power grid. Currently there is a mountain of theoretical methods to calculate the line loss of the power system. However, these methods have some limitation, such as less considering the volatility of wind power resources. This paper presents an improved method to calculate the energy loss of wind power generation, considering the fluctuations of wind power generation. First, data are collected to obtain the curve of the typical daily expected output of wind farms for one month. Second, the curve of the typical daily expected output are corrected by the average electricity and the shape factor to obtain the curve of the typical daily equivalent output of wind farms for one month. Finally, the power flow is calculated by using typical daily equivalent output curve to describe the energy loss for one month. The results in the 110 kV main network show that the method is feasible.

Optimal Economic Life Interval Evaluation Method of Transformers

This paper proposed a method of optimal economic life interval evaluation of transformer, thus providing scientific support for power system planning and reconstruction. First, obtaining the transformer failure rate by using Levenberg-Marquardt based least squares algorithm on the consumption that transformer failure mode meets three-parameters Weibull distribution. Second, calculating operation cost and failure cost of transformer during its life cycle on the basis of transformer failure rate. Then, acquiring the optimal economic life interval of transformer through life cycle minimal average annual cost based on the theory of interval analysis. Finally, the proposed method is proved to be effective by applying to some real transformers.

减税法案后美国合伙制企业的转型趋势——对黑石等合伙制企业转型公司制的税务分析

从税法的角度分析,合伙制企业作为穿透实体,与公司制企业较易区分。然而,随着合伙制企业法的发展,公开交易的合伙制企业也可以集中管理、相对自由和公开地转让股份、享受公司制企业的待遇,这些特征使其和一家公司制企业几乎完全一致。因此,经营者仍然坚持选择合伙制企业的重要原因之一是享受较低的税负。2017年美国《减税与就业法案》的出台大幅度降低了公司制企业的税收负担,在很大程度上减少了公司制企业与合伙制企业之间的税负差。在这样的背景下,美国投资界的巨头黑石与KKR,先后转型为公司制企业。本文重点分析此类企业转型背后的税务原因,进而对合伙制企业的税收政策进行思考。