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Search Results: 1 - 10 of 127506 matches for " Jianmin LI "
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Late-onset Orbital Cellulitis with Abscess Formation Caused by Klebsiella Pneumoniae  [PDF]
Jing Li, Jianmin Ma, Xin Ge
Open Journal of Ophthalmology (OJOph) , 2012, DOI: 10.4236/ojoph.2012.23019
Abstract: Klebsiella pneumoniae is a facultative anaerobic gram-negative, non-motile, capsulated, gas-producing rod found widely in nature and often associated with urinary and respiratory infections in humans. Orbital cellulitis with abscess formation caused by K. pneumoniae is rare. Here, we present a case of K. pneumonia-inducing orbital cellulitis with abscess formation in a patient who had undergone an orbital wall fracture prosthesis with hydroxyapatite implantation due to orbital trauma 9 years ago. The patient was treated successfully with antibiotics and surgery.
Auditory P300 as an Indicator in Effectiveness of Robot-Assisted Lower Limb Rehabilitation Training among Hemiplegic Patients after Ischemic Stroke  [PDF]
Yaning Zhao, Zhengwei Hao, Jianmin Li
Open Journal of Therapy and Rehabilitation (OJTR) , 2014, DOI: 10.4236/ojtr.2014.22012
Abstract: Background: Robot-assisted lower limb rehabilitation training in early stage could improve the limb function among hemiplegic patients caused by ischemic stroke. P300 potential changes have importantly clinical value for evaluating the improvement in nerve function during the training as one of the objective targets. Methods: Sixty hemiplegic patients after stroke were randomly divided into a Lokomat group (30 cases) and a control group (30 cases). The Lokomat group received Lokomat rehabilitation while the control group only received traditional rehabilitation. The gait parameters and the balance ability were evaluated by the K421GAITRite analysis system and the Berg Balance Scale (BBS); ERP components including N100, N200, P200 and P300 potential were evaluated by a muscle electric inducing potentiometer. Results: There were no significant differences in BBS and gait parameters (P > 0.05), as well as in amplitude and incubation periods (IP) (P > 0.05) between the two groups before training. After 8 weeks treatment, the total (48.88 ± 3.68), static (26.40 ± 3.14) and dynamic (22.64 ± 3.68) balance scores improved significantly; the pace (59.22 ± 4.67), stride length (19.04 ± 2.24), feet wide (98.02 ± 7.97) and walking velocity (84.86 ± 9.88) and IP of N200 and P300 shortened obviously and P300 amplitude increased significantly in robot group (P < 0.05). Conclusion: This demonstrated that robot-assisted lower limb rehabilitation training in early stage could improve the limb function among hemiplegic patients caused by ischemic stroke. P300 may be considered as an indicator of neurological function improvement and effective robot-assisted lower limb rehabilitation training.
Resilience of Interbank Market Networks to Shocks
Shouwei Li,Jianmin He
Discrete Dynamics in Nature and Society , 2011, DOI: 10.1155/2011/594945
Abstract: This paper first constructs a tiered network model of the interbank market. Then, from the perspective of contagion risk, it studies numerically the resilience of four types of interbank market network models to shocks, namely, tiered networks, random networks, small-world networks, and scale-free networks. This paper studies the interbank market with homogeneous and heterogeneous banks and analyzes random shocks and selective shocks. The study reveals that tiered interbank market networks and random interbank market networks are basically more vulnerable against selective shocks, while small-world interbank market networks and scale-free interbank market networks are generally more vulnerable against random shocks. Besides, the results indicate that, in the four types of interbank market networks, scale-free networks have the highest stability against shocks, while small-world networks are the most vulnerable. When banks are homogeneous, faced with selective shocks, the stability of the tiered interbank market networks is slightly lower than that of random interbank market networks, whereas, in other cases, the stability of the tiered interbank market networks is basically between that of random interbank market networks and that of scale-free interbank market networks. 1. Introduction Interbank markets play an essential role in modern financial systems. In an interbank market, banks with liquidity shortages can borrow liquidity from banks with liquidity surpluses. This interconnection of the banking system can lead to an enhanced liquidity allocation, but it also contributes to risk sharing among banks. Interbank linkages in interbank markets might become a contagion channel through which solvency or liquidity problems of a single bank can spread to other banks. Direct interbank connections become a source of systemic risk, which has highlighted the importance of interbank markets for financial stability. The importance of interbank linkages has been recognized in safeguarding overall financial stability. At the same time, there has been a lot of empirical research on the recognition of such linkages as a channel of contagion. These studies adopt data on interbank exposures from a number of countries, namely, Switzerland, United States, Germany, the United Kingdom, Holand, Denmark, India, and Finland [1–8]. These researches are valuable in providing insights into the empirical significance of interbank contagion in real interbank markets. However, the empirical literature assumes maximum diversification or a complete interbank market structure, which
Some Priori Estimates about Solutions to Nonhomogeneous A-Harmonic Equations
Jianmin Zhu,Jun Li
Journal of Inequalities and Applications , 2010, DOI: 10.1155/2010/520240
Abstract: We deal with the nonhomogeneous A-harmonic equation d*A(x,g+du)=d*h and the related conjugate A-harmonic equation A(x,g+du)=h+d*v. Some priori estimates about solutions to these equations are obtained, which generalize some existing results. Particularly, we obtain the same estimate given by Theorem 1 of Iwaniec (1992) for the weak solution to the first equation under weaker conditions by a simpler method.
Load-balanced Route Discovery for Wireless Sensor Networks
Jianmin Zhang,Jian Li
Journal of Networks , 2010, DOI: 10.4304/jnw.5.9.1060-1067
Abstract: Wireless sensor networks have received academia research attention at present. A typically task in a wireless sensor network is that every sensor node senses its local environment and, upon request, sends the data of interest back to the sink node. The energy-constrain sensors in wireless sensor networks operate on limited batteries, so it is a very important issue to use energy efficiently and reduce power consumption. Most recent routing protocols tend to find the minimum energy cost path to lower energy usage for all routing paths, thus, they may lead to some of the nodes deplete their energy quickly. To maximize the network survivability by using equal energy among as many nodes as possible, this paper presents a novel load balancing multipath routing algorithm
Some Priori Estimates about Solutions to Nonhomogeneous A-Harmonic Equations
Zhu Jianmin,Li Jun
Journal of Inequalities and Applications , 2010,
Abstract: We deal with the nonhomogeneous A-harmonic equation and the related conjugate A-harmonic equation . Some priori estimates about solutions to these equations are obtained, which generalize some existing results. Particularly, we obtain the same estimate given by Theorem 1 of Iwaniec (1992) for the weak solution to the first equation under weaker conditions by a simpler method.
An Equilibrium Model of Interbank Networks Based on Variational Inequalities
Shouwei Li,Jianmin He
Advances in Mathematical Physics , 2013, DOI: 10.1155/2013/175232
Abstract: We develop an equilibrium model of credit network and trust network in the interbank market. We consider two kinds of decision makers including banks with liquidity surplus and banks with liquidity shortage. We model the behavior of the decision makers, derive the equilibrium conditions, and establish the variational inequality formulation for interbank credit network and trust network. We then utilize the variational inequality formulation to obtain qualitative properties of the equilibrium pattern in terms of existence and uniqueness. 1. Introduction Interbank markets are among the most important in financial systems. They allow exchanges among financial institutions, facilitating the allocation of the liquidity surplus to banks with liquidity shortage. A particular feature in interbank markets is the threat of systemic risk, where the failure of one bank spreads to other banks, through interbank connections. Notwithstanding, the global financial crisis, which burst in August 2007, has shown the dark side of interbank connections. In recent years, interbank connections have received significant attention in the literature. However, the literature mainly focuses on network structure, based on which the effect of systemic risk is simulated. The intricate structure of interbank connections can be captured by using a network representation, and this network is called credit network in this paper. Actually, there is large literature justifying the existence of the heterogeneity of interbank credit networks in real world banking systems, such as a random network topology [1], a small-world network topology [2], a scale-free network topology [3], tiered network topology [4], and so on. Some researches focus on the explanation of how they emerge, for instance, Inaoka et al. [3] construct a growing model for banking networks to explain that a power-law distribution is a self-organized critical phenomenon; Teteryatnikova [5] and Li and He [6] provide different methods to construct tiered credit networks in interbank markets. Network models have proven to be very helpful for the study of shock propagation and a system’s resilience to contagion [7], and there has been growing literature to simulate the effect of systemic risk based on interbank credit network models. There are many significant studies in this area, such as Iori et al. [8], Nier et al. [9], Canedo and Jaramillo [10], Gai and Kapadia [11], May and Arinaminpathy [12], Berman et al. [13], Gai et al. [14], Haldane and May [15], Anand et al. [16], Heise and Kuehn [17], Lenzu and Tedeschi [18],
CNN Based Hashing for Image Retrieval
Jinma Guo,Jianmin Li
Computer Science , 2015,
Abstract: Along with data on the web increasing dramatically, hashing is becoming more and more popular as a method of approximate nearest neighbor search. Previous supervised hashing methods utilized similarity/dissimilarity matrix to get semantic information. But the matrix is not easy to construct for a new dataset. Rather than to reconstruct the matrix, we proposed a straightforward CNN-based hashing method, i.e. binarilizing the activations of a fully connected layer with threshold 0 and taking the binary result as hash codes. This method achieved the best performance on CIFAR-10 and was comparable with the state-of-the-art on MNIST. And our experiments on CIFAR-10 suggested that the signs of activations may carry more information than the relative values of activations between samples, and that the co-adaption between feature extractor and hash functions is important for hashing.
An Extension of the Poincar’e Lemma of Differential Forms  [PDF]
Zhaoyang Tang, Jianmin Zhu, Jianhua Huang, Jin Li
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.41004
Abstract:

This paper is to extend the Poincare Lemma for differential forms in a bounded, convex domain [1] in Rn to a more general domain that, we call, is deformable to every point in itself. Then we extend the homotopy operator T in [1] to the domain defromed to every point of itself.

Surfactant Surface Tension Effects on Promoting Hydrate Formation: An Experimental Study Using Fluorocarbon Surfactant (Intechem-01) + SDS Composite Surfactant  [PDF]
Lin Zhang, Shidong Zhou, Shuli Wang, Lei Wang, Jianmin Li
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.45A005
Abstract:

The investigation of surface tension is a very important task for gas hydrate studying. Surfactants can effectively reduce the surface tension, improve the gas storage capability of hydrate and increase the formation rate, shorten the induction time. The objective of this study were to obtain a better understanding of the role of surface tension on hydrate formation and build gas hydrate models involve surfactant. In this study it was highlighted that the surface tension of Intechem-01 + SDS composite surfactants in natural gas hydrate promotion system and the change rules at different temperatures, concentration and proportion. According to the results of experiment, the surface tension of composite surfactants decreased with the increase of Intechem-01. The best cooperating effect was observed in proportion (Intechem-01 content) of 0.6 - 0.7, where the surface tension was the lowest. In this proportion range, the composite surfactants showed the same effect to pure fluorine carbon surfactant. The study shown the surface tension of composite surfactants decreased with the rise of temperature, and they were in a linear relationship within a certain range. Surface tension of composite surfactants decreased with the increase of surfactant concentration, however, it was no longer decreased above critical micelle concentration (CMC). The fitting equation of surface tension with various factors has been obtained.

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