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Search Results: 1 - 10 of 120054 matches for " Ruijiang Wang "
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Improved Adaptive and Multi-group Parallel Genetic Algorithm Based on Good-point Set
Ruijiang Wang,Yihong Ru,Qi Long
Journal of Software , 2009, DOI: 10.4304/jsw.4.4.348-356
Abstract: This paper puts forward an adaptive genetic algorithm to solve the multi-group homogenization in the solution space. The use of good-point set approach improves the initial population, ensuring them a uniform distribution in the solution space. In the evolution, each population implements independent genetic operations (selection, good-point set crossover, and mutation). The introduction of adaptive operator makes crossover and mutation operator self-adaptive. As the algorithm adopts a strategy of retaining the best, a space compression strategy can be designed based on information entropy theory through the information of all sub-populations in the evolution process, which ensures the algorithmic stability and fast convergence to the global optimal solution. Furthermore, in order to explore the feasibility and effectiveness of the improved multi-group parallel algorithm, optimization tests are implemented on some of the typical multi-peak functions, and the results are compared with the analytic solution and optimal solution of basic GA. The outcome suggests that the global searching ability and convergence of the improved algorithm is far better than the basic one.

Wang Ruijiang,Chen Zhongyi,Huang Xiangxu,

热带亚热带植物学报 , 1998,
Abstract: The authors have observed the chromosome numbers of 12 mangrove species growing on the salty and muddy coasts and 2 island species belonging to Rhizophoraceae and Sonneratiaceae in China. The chromosome numbers of seven taxa, namely Bruguiera sexangula, B. sexangula var. rhynchopetala, Rhizophora stylosa, Sonneratia hainanensis, S. paracaseolaris, S. ovata and Carallia brachiata, are reported for the first time, which give a supplement to chromosome data of Chinese mangroves. Fourly-four names, which represent 44.9% of the world mangrove species, are listed in detail, and chromosomal data of partial species are provided.
Development of a finite-element-based design sensitivity analysis for buckling and postbuckling of composite plates
Ruijiang Guo,Aditi Chattopadhyay
Mathematical Problems in Engineering , 1995, DOI: 10.1155/s1024123x95000160
Development of a finite-element-based design sensitivity analysis for buckling and postbuckling of composite plates
Guo Ruijiang,Chattopadhyay Aditi
Mathematical Problems in Engineering , 1995,
Abstract: A finite element based sensitivity analysis procedure is developed for buckling and postbuckling of composite plates. This procedure is based on the direct differentiation approach combined with the reference volume concept. Linear elastic material model and nonlinear geometric relations are used. The sensitivity analysis technique results in a set of linear algebraic equations which are easy to solve. The procedure developed provides the sensitivity derivatives directly from the current load and responses by solving the set of linear equations. Numerical results are presented and are compared with those obtained using finite difference technique. The results show good agreement except at points near critical buckling load where discontinuities occur. The procedure is very efficient computationally.
Association of Serum Phosphorus Variability with Coronary Artery Calcification among Hemodialysis Patients
Mengjing Wang, Haiming Li, Li You, Xiaoling Yu, Min Zhang, Ruijiang Zhu, Chuanming Hao, Zhijie Zhang, Jing Chen
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0093360
Abstract: Coronary artery calcification (CAC) is associated with increased mortality in patients on maintenance hemodialysis (MHD), but the pathogenesis of this condition is not well understood. We evaluated the relationship of CAC score (CACs) and variability in serum phosphorus in MHD patients. Seventy-seven adults on MHD at Huashan Hospital (Shanghai) were enrolled in July, 2010. CAC of all the patients were measured by computed tomography and CACs was calculated by the Agatston method at the entry of enrollment. Patients were divided into three categories according to their CACs (0~10, 11~400, and >400). Blood chemistry was recorded every 3 months from January 2008 to July 2010. Phosphorus variation was defined by the standard deviation (SD) or coefficient of variation (CV) and it was calculated from the past records. The ordinal multivariate logistic regression analysis was used to analyze the predictors of CAC. The mean patient age (± SD) was 61.7 years (±11.3) and 51% of patients were men. The mean CACs was 609.6 (±1062.9), the median CACs was 168.5, and 78% of patients had CACs more than 0. Multivariate analysis indicated that female gender (OR = 0.20, 95% CI = 0.07–0.55), age (OR = 2.31, 95% CI = 1.32–4.04), serum fibroblast growth factor 23 (OR = 2.25, 95% CI = 1.31–3.85), SD-phosphorus calculated from the most recent 6 measurements (OR = 2.12; 95% CI = 1.23–3.63), and CV-phosphorus calculated from the most recent 6 measurements (OR = 1.90, 95% CI = 1.16–3.11) were significantly and independently associated with CACs. These associations persisted for phosphorus variation calculated from past 7, 8, 9, 10, and 11 follow-up values. Variability of serum phosphorus may contribute significantly to CAC and keeping serum phosphorus stable may decrease coronary calcification and associated morbidity and mortality in MHD patients.
Analysis on the Effect of Shading on the Characteristics of Large-scale on-grid PV System in China  [PDF]
Yunlin Sun, Xiangzhi Li, Ruijiang Hong, Hui Shen
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B042
Abstract: Because of rich solar resource and low land cost, a lot of large-scale ground-based grid-connected PV systems have been built in Northwest China. In this paper, some shading phenomena on a grid-connected PV system inNorthwest Chinaare classified and analyzed. Through the I-V curve test of PV modules, it can be seen that dust influence system performance of the grid-connected PV system. And the experimental results have shown that shading could affect the electrical properties of PV modules. Meanwhile, same shading area on different shading positions could have different impacts on the identical PV module.

WANG Hao,HUANG Rongfang,HONG Ruijiang,WU Jie,WEN Lishi,

材料研究学报 , 1992,
Abstract: Microstructure,crystallography,electron structure and optical properties ofaluminum nitride film deposited by ion beam enhanced reactive magnetron sputtering were stu-died.The results show that the microstructure of the film is uniform and the grain size
Impact of aeration conduit diameter on production of landfill gas in a semiaerobic landfill

DU Song,JIN Jing,MOU Zishen,WANG Di,ZHAO Ruijiang,CUI Baoshan,

环境科学学报 , 2011,
Abstract: Semi-aerobic landfill technology is becoming the main technology to solve the solid waste pollution problem in some middle and small cities in China because our earth resource limitation and the large amount of garbage. In this technology, the amount of air which entered into the landfill site has great impact to the generation and composition of LFG. This research set up pilot plants to simulate semi-aerobic landfill technology at Zhuozhou MSW Landfill Site. Three different diameters of aeration conduits, DN100, DN150 and DN200 have been set up connected to the leachate drainage pipe. Each concentration of gases in LFG has been monitored for 10 week continuously. The results show that the concentration and the uptrend of O2 in LFG coming from the plant with DN100 aeration conduit are much higher than it from the other two plants. In the greenhouse gas reduction field, CH4 and CO2 in this plant have been controlled more effectively. Through the aerothermodynamics calculation, we can see the amount of gas which coming from the aeration conduit of DN100, DN150 and DN200 has the proportion of 4:3:2. Since the amount of gas which entering into the drainage pipe are of the same level, the air which is transported into the landfill from the DN100 aeration conduit has the most amount than other two situations.
Effects of high temperature annealing on the dislocation density and electrical properties of upgraded metallurgical grade multicrystalline silicon
HuaBi Xu,RuiJiang Hong,Hui Shen
Chinese Science Bulletin , 2011, DOI: 10.1007/s11434-010-4090-7
Abstract: High temperature annealing was performed on upgraded metallurgical grade multicrystalline silicon (UMG multi-Si) wafers with a purity of 99.999%. The samples were mechanically polished and chemically etched, and then the microstructures were observed by a scanning electron microscope (SEM). The minority carrier lifetime and resistivity of the samples were measured using microwave photoconductance decay and four-point probe techniques, respectively. The results show that the electrical properties of the samples decrease rather than increase as the annealing temperature increases, while the number of dislocations in bulk Si reduced or even disappeared after annealing for 6 hours at 1100–1400°C. It is considered that the structural microdefects induced by the high concentration of metal impurities (including interstitial or substitutional impurities and nanoscale precipitates) determine the minority carrier recombination activity and thus the electrical properties of UMG multi-Si wafers rather than dislocations in bulk Si.
RF Magnetron Sputtering Aluminum Oxide Film for Surface Passivation on Crystalline Silicon Wafers
Siming Chen,Luping Tao,Libin Zeng,Ruijiang Hong
International Journal of Photoenergy , 2013, DOI: 10.1155/2013/792357
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