http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Comprehensive Morphological Hybrid Filter Considering Symmetry Maintained
Yuefeng Lu,Shaofeng Lu,Baomin Han,Jianhua Wu,XiZhi Chang,Chen Feng,Shuo Liu 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.10
In this paper, we present a comprehensive morphological hybrid filter considering symmetry maintained, based on composited the morphological hybrid filters and the generalized morphological hybrid filters. The filter improved filtering performance from two aspects: morphological operate mode and optimization of structure elements. It can eliminate the gray values deviation of the images and have the double advantage of the two-path dual filters. Simulation results show that the new hybrid filter can effectively remove the noise in the image while maintaining the image details. Compared with the other morphological hybrid filters, the images filtered by the new filter may have a higher peak signal-to-noise ratio (PSNR) and a smaller mean square error (MSE).
Yong Liu,Yuefeng Wu,Miaojun Su,Weihua Liu,Xiying Li,Fujian Liu 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.92 No.-
A class of Brønsted–Lewis acid bifunctionalized ionic liquids based heteropolyacid hybrid (BLA-ILs-HPA)solid acids were developed by combining the double sulfonic groups grafted, ionic liquids basedheteropolyacid hybrid with Lewis acidic centers (M = Zn, Co, Fe, Ni, Cu). The prepared BLA-ILs-HPA showboth Brønsted and Lewis acidic sites with extremely-high acid strength and enhanced stabilities, asdetermined by FT-IR, Py-IR, TG, XPS and 31P solid state NMR results. BLA-ILs-HPA were successfullyapplied in esterification camphene with acetic acid to produce isobornyl acetate, and dehydration ofglucose to produce 5-hydrozymethylfural. BLA-ILs-HPA show enhanced catalytic activities in comparisonwith various acid catalysts. The effects of reaction temperatures, initial reactant molar ratio, catalystdosage, and reaction time were studied in detail. The optimal reaction conditions were obtained, and theexperimental data was successfully correlated by a pseudohomogeneous (PH) reaction kinetic model inthe temperature range of 313.15–333.15 K. The calculated values obtained by the reaction kinetic modelwere in good agreement with the experimental data. Moreover, as a heterogeneous reaction catalyst,BLA-ILs-HPA can be recovered by simple treatment. After six times cycling, the decreasing in the catalyticactivity of BLA-ILs-HPA could not be observed significantly, suggesting their good reusability.
Sun Xianshan,Sheng Yuefeng,Wu Cheng,Cai Qingnan,Lai Xunyang 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.1
When distributed generation is connected to the distribution network, there are many uncertainties and various loads, and the power quality is difcult to judge. Therefore, a comprehensive evaluation method for power quality interval balance of active distribution network based on CVAE-TS (coordination Vocational Academic Education-Takagi–Sugeno) is proposed. The method of change vector analysis (CVA) is adopted to generate power data samples of active distribution network. The category labels of each data are added to the original power data as training sets for CVAE, and the number of samples generated within the interval is increased. TS modeling is adopted, fuzzy set theory is combined with least square method, incomplete electric energy data in data sample is converted into complete electric energy data by flling method, and the applicability of data is enhanced. An interval evaluation model of power quality in active power network is established by using analytic hierarchy process. The experimental results show that this method can efectively realize the sampling and flling of power data in active distribution network, the evaluation results are accurate and reliable, and the horizontal distribution of power quality can be intuitively known.