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Search Results: 1 - 10 of 152472 matches for " LI Jian-fei "
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Study on Chinese Rural Drinking Water Option and Its Pricing  [PDF]
Jian-Fei Leng, Lu Li
Journal of Financial Risk Management (JFRM) , 2012, DOI: 10.4236/jfrm.2012.14010
Abstract: The problems of Chinese rural drinking water have existed for a long time and are deteriorating. Determining the price of rural drinking water is beneficial for solving these problems to some extent. Therefore, this article makes appropriate study on rural drinking water option and its pricing model. Based on the theories of options and water option, we make description on the connotation of rural drinking water option and its trading principle as well as main entities. In addition, on the basis of traditional Black-Scholes option pricing model and the actual situation of rural drinking water, we construct rural drinking water option pricing model from different aspects. With the guiding price of rural drinking water option, it can realize the optimum allocation of rural drinking water resource on the market.
Potassium (2,2′-bipyridine-κ2N,N′)bis(carbonato-κ2O,O′)cobaltate(III) dihydrate
Jian-Fei Wang,Jian-Li Lin
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810037463
Abstract: In the title compound, K[Co(CO3)2(C10H8N2)]·2H2O, the Co(III) atom is coordinated by two bipyridine N atoms and four O atoms from two bidentate chelating carbonate anions, and thus adopts a distorted octahedral N2O4 environment. The [Co(bipy)(CO3)2] (bipy is 2,2′-bipyridine) units are stacked along [100] via π–π stacking interactions, with interplanar distances between the bipyridine rings of 3.36 (4) and 3.44 (6) , forming chains. Classical O—H...O hydrogen-bonding interactions link the chains, forming channels along (100) in which the K+ ions reside and leading to a three-dimensional supramolecular architecture.
Aqua(4-carboxypyridine-2,6-dicarboxylato-κ3O2,N,O6)(1,10-phenanthroline-κ2N,N′)nickel(II)
Qin Zou,Jian-fei Wang,Jian-li Lin
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811026055
Abstract: The title compound, [Ni(C8H3NO6)(C12H8N2)(H2O)], contains an NiII ion, a 1,10-phenanthroline (phen) ligand, a 4-carboxypyridine-2,6-dicarboxylate (Hptc2 ) anion and a coordinated water molecule. The NiII atom exhibits a distorted octahedral N3O3 environment. O—H...O hydrogen bonding between coordinated water and carboxylate O atoms, as well as π–π stacking interactions [interplanar distances between phen rings = 3.293 (2) ] lead to a supermolecular assembly.
Multi-focus Image Fusion Scheme Based on Wavelet Contrast
一种基于小波方向对比度的多聚焦图像融合方法

WANG Li,LU Di,LV Jian-fei,
王丽
,卢迪,吕剑飞

中国图象图形学报 , 2008,
Abstract: The vision system of human being is sensitive to local contrast. If the wavelet transform and directional contrast are put together, the effect of image fusion may be better. This paper puts forward a new multi-focus image fusion scheme based on wavelet directional contrast after researching the directional contrast. First, the input multi-focus images are decomposed by wavelet transform. Second, the high frequency neighborhood and low frequency neighborhood are ratioed on each disaggregatire layer of each image. Low frequency of this decomposition is obtained by two-dimensional discrete wavelet inverse transform of last decomposition's low frequency and high frequency. The bigger ratio one corresponding high frequency wavelet coefficient is taken to corresponding wavelet coefficient. Then two-dimensional discrete wavelet inverse transform of high frequency and low frequency from the maximum decomposition to minimum decomposition is calculated. The fusion image is acquived at last. The neighborhood relativity of pixel is taken into account, the error in selecting pixels is reduced. Experiments show that this scheme is improved than the multi-focus image scheme calculating the wavelet directional contrast of each pixel.
Implicitness-to-explicitness translation in English translation of traditional Chinese medicine
Jian-fei ZHU
Zhong Xi Yi Jie He Xue Bao , 2008,
Abstract:
Research on the Establishment of Chinese Rural Drinking Water Market  [PDF]
Jian-Fei Leng, Yi-Ran Ding
American Journal of Industrial and Business Management (AJIBM) , 2013, DOI: 10.4236/ajibm.2013.31001
Abstract:


The aim of this paper is to research the establishment of Chinese rural drinking water market. On the basis of prior research on rural drinking water and water market, we study the market establishment and analyze trading elements, procedure and modes of Chinese rural drinking water market. Then we explore the operating mechanism of the market, such as the supply and demand mechanism, the price mechanism, the competition mechanism and the support mechanism. This study will conduce to the optimization of the allocation of water resources.


Case Analysis of the ZC Company’s AS Power Project Investment Decision-Making  [PDF]
Jian-Fei Leng, Qun Zhang, Xiang-Nan Wang
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.511064
Abstract: First, combined with relevant theories of modern investment decision-making, this paper took AS power engineering project of ZC Company for instance, analyzed objective function of power engineering investment structure in ZC Company. Second, this paper analyzed investment decision-making structure of AS power engineering project in ZC Company, and obtained specific results of investment decision-making, and the related results were verified. Through analysis and exploration, this paper has a scientific impact on ZC Company for the AS power project investment, while it’s hoped that it can play a role in electric power engineering projects of other companies in China. So it can better promote the development of electrical engineering investment in electrical industry.
Neuroprotective, Anti-Amyloidogenic and Neurotrophic Effects of Apigenin in an Alzheimer’s Disease Mouse Model
Le Zhao,Jun-Li Wang,Rui Liu,Xiao-Xu Li,Jian-Fei Li,Lu Zhang
Molecules , 2013, DOI: 10.3390/molecules18089949
Abstract: Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by extracellular senile plaques and intracellular neurofibrillary tangles in the brain. Amyloid-β peptides (Aβ) are considered to play a critical role in the onset and progression of AD. Apigenin (4',5,7-trihydroxyflavone) is a pharmacologically active agent. Even though some evidence suggests that it has potential neuroprotective effects, no preexisting study has reported any therapeutic effects of apigenin in AD models. In the present study, we examined the effects of apigenin on cognitive function in APP/PS1 double transgenic AD mice and explored its mechanism(s) of action. Three-month oral treatment with apigenin rescued learning deficits and relieved memory retention in APP/PS1 mice. Apigenin also showed effects affecting APP processing and preventing Aβ burden due to the down-regulation of BACE1 and β-CTF levels, the relief of Aβ deposition, and the decrease of insoluble Aβ levels. Moreover, apigenin exhibited superoxide anion scavenging effects and improved antioxidative enzyme activity of superoxide dismutase and glutathione peroxidase. In addition, apigenin restored neurotrophic ERK/CREB/BDNF pathway in the cerebral cortex. In conclusion, apigenin may ameliorate AD-associated learning and memory impairment through relieving Aβ burden, suppressing amyloidogenic process, inhibiting oxidative stress, and restoring ERK/CREB/BDNF pathway. Therefore, apigenin appears to represent an alternative medication for the prevention and/or therapy of AD.
An improved complex variable element-free Galerkin method for two-dimensional elasticity problems

Bai Fu-Nong,Li Dong-Ming,Wang Jian-Fei,Cheng Yu-Min,

中国物理 B , 2012,
Abstract: In this paper, the improved complex variable moving least-squares (ICVMLS) approximation is presented. The ICVMLS approximation has an explicit physics meaning. Compared with the complex variable moving least-squares (CVMLS) approximations presented by Cheng and Ren, the ICVMLS approximation has a great computational precision and efficiency. Based on the element-free Galerkin (EFG) method and the ICVMLS approximation, the improved complex variable element-free Galerkin (ICVEFG) method is presented for two-dimensional elasticity problems, and the corresponding formulae are obtained. Compared with the conventional EFG method, the ICVEFG method has a great computational accuracy and efficiency. For the purpose of demonstration, three selected numerical examples are solved using the ICVEFG method.
Adaptive robust controller of mobile satellite antenna systems
移动卫星天线的自适应鲁棒控制系统

LI Guo,HU Jian-fei,YU Da-tai,
李果
,胡剑飞,余达太

控制理论与应用 , 2007,
Abstract: The use of the adaptive robust controller for improving control performance and stability of mobile satellite antenna systems is investigated in this paper.An adaptive robust control system of mobile satellite antennas is presented. The adaptive robust controller is designed according to the mobile satellite antenna systems model.The proposed adaptive controller and the corresponding robust adaptive law not only keep the closed-loop system robustly stable,but also provide the expected performance.Finally,the effectiveness of the algorithm is verified by experimental results,demonstrating that the control performance and stability of mobile satellite antenna systems are improved,and the control system maintains satisfactory control performance despite the change of road surface condition.
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