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Search Results: 1 - 10 of 17423 matches for " Hao Liao "
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Design and Development of Magical Mobile Updater for Automatic Information Synchronization
Ximei Liao,Hao Shi
International Journal of Wireless & Mobile Networks , 2010,
Abstract: Today wireless technologies have become more and more popular in our daily life, the most popular being in telecommunication and networking. Wireless technology has turned out to be convenient andwidely uses as it is becoming an inexpensive option to replace fixed cables. There are many different wireless technologies around the world and they are implemented into different wireless devices for ourdaily use. In this paper, the state-of-art of Bluetooth technology is first reviewed. It aims to demonstrate use of Bluetooth wireless technology including its protocol and functionality by building an application to connect and communicate between wired and wireless devices. The key of this research is to evaluate whether utilization of Bluetooth technology can synchronize contents between a mobile phone and a server computer. The paper no only focuses on developing an application prototype of Magic Mobile Updater (MMU) for Bluetooth enabled devices, which addresses its security and connectivity, but also studies how wireless Bluetooth technology affects and improves our daily life in the near future.
Reconstructing propagation networks with temporal similarity metrics
Hao Liao,An Zeng
Computer Science , 2014,
Abstract: Node similarity is a significant property driving the growth of real networks. In this paper, based on the observed spreading results we apply the node similarity metrics to reconstruct propagation networks. We find that the reconstruction accuracy of the similarity metrics is strongly influenced by the infection rate of the spreading process. Moreover, there is a range of infection rate in which the reconstruction accuracy of some similarity metrics drops to nearly zero. In order to improve the similarity-based reconstruction method, we finally propose a temporal similarity metric to take into account the time information of the spreading. The reconstruction results are remarkably improved with the new method.
Measurement of Reaction Rate of Gelled Acids and Calcite with the Rotating Disk Apparatus  [PDF]
Yunhu Liao, Dezheng Zhang, Jianfeng Peng, Hao Liang, Yunlei Gong
Natural Resources (NR) , 2017, DOI: 10.4236/nr.2017.88035
Abstract: An investigation has been made to study the reaction kinetics of gelled acids with calcite using a rotating disk apparatus. The rheological experiments revealed that all gelled acids behaved as non-Newtonian shear thinning fluids. With the rotating disk apparatus, the reaction kinetics parameters, activation energy, and effective diffusion coefficients were determined. It was found that the reaction of gelled acid with calcite was mass transfer limited at low polymer concentration and moving toward surface reaction limited at higher polymer concentration. And the diffusion rate marginally decreased, with increasing the polymer concentration.
Management Innovation and Practice of Full Life Circle in Offshore Petroleum Exploration Target  [PDF]
Jin Liao, Yunzhi Jin, Xunda Wu, Hao Liang
International Journal of Geosciences (IJG) , 2018, DOI: 10.4236/ijg.2018.96023
Abstract: Faced with the continued downturn of international oil price and increasing complexity of oil-gas geological conditions since 2013, CNOOC China Ltd., Zhanjiang has promoted management innovation of full life circle with the theme of “value to exploration-oriented”, establishing QC system of multiple-dimension exploration to make exploration target management standardized and institutionalized, putting forward new ideas, closed-loop management of “big data” in full life circle to make exploration target and decision flow informationized, generating comprehensive reserve method of exploration target optimization and quantifiable management mode of “probabilistic method” evaluated by experts, and establishing “optimal so-lution” to management decision model to manage optimal target combination to drill and bring about lean management of exploration deployment. All the management innovations and practices have been carried out in oilfields of western South China Sea successfully, with corporation’s exploration decision and deployment guided effectively, a great success of petroleum exploration, and remarkable economic as well as society benefits.
Scattering of Scalar Waves by Schwarzschild Black Hole Immersed in Magnetic Field
Juhua Chen,Hao Liao,Yongjiu Wang
Physics , 2011, DOI: 10.1140/epjc/s10052-013-2395-9
Abstract: The magnetic field is one of the most important constituents of the cosmic space and one of the main sources of the dynamics of interacting matter in the universe. The astronomical observations imply the existence of a strong magnetic fields of up to $10^4-10^8G$ near supermassive black holes in the active galactic nuclei and even around stellar mass black holes. In this paper, with the quantum scattering theory, we analysis the Schr\"{o}edinger-type scalar wave equation of black hole immersed in magnetic field and numerically investigate its absorption cross section and scattering cross section. We find that the absorption cross sections oscillate about the geometric optical value in the high frequency regime. Furthermore in low frequency regime, the magnetic field makes the absorption cross section weaker and this effect is more obviously on lower frequency brand. On the other hand, for the effects of scattering cross sections for the black hole immersed in magnetic field, we find that the magnetic field makes the scattering flux weaker and its width narrower in the forward direction. We find that there also exists the glory phenomenon along the backforward direction. At fixed frequency, the glory peak is higher and the glory width becomes narrower due to the black hole immersed in magnetic field.
Measuring quality, reputation and trust in online communities
Hao Liao,Giulio Cimini,Matus Medo
Computer Science , 2012,
Abstract: In the Internet era the information overload and the challenge to detect quality content has raised the issue of how to rank both resources and users in online communities. In this paper we develop a general ranking method that can simultaneously evaluate users' reputation and objects' quality in an iterative procedure, and that exploits the trust relationships and social acquaintances of users as an additional source of information. We test our method on two real online communities, the EconoPhysics forum and the Last.fm music catalogue, and determine how different variants of the algorithm influence the resultant ranking. We show the benefits of considering trust relationships, and define the form of the algorithm better apt to common situations.
Towards an objective ranking in online reputation systems: the effect of the rating projection
Hao Liao,An Zeng,Yi-Cheng Zhang
Computer Science , 2014,
Abstract: Online reputation systems are commonly used by e-commerce providers nowadays. In order to generate an objective ranking of online items' quality according to users' ratings, many sophisticated algorithms have been proposed in the literature. In this paper, instead of proposing new algorithms we focus on a more fundamental problem: the rating projection. The basic idea is that even though the rating values given by users are linearly separated, the real preference of users to items between different values gave is nonlinear. We thus design an approach to project the original ratings of users to more representative values. This approach can be regarded as a data pretreatment method. Simulation in both artificial and real networks shows that the performance of the ranking algorithms can be improved when the projected ratings are used.
Predicting missing links via correlation between nodes
Hao Liao,An Zeng,Yi-Cheng Zhang
Computer Science , 2014,
Abstract: As a fundamental problem in many different fields, link prediction aims to estimate the likelihood of an existing link between two nodes based on the observed information. Since this problem is related to many applications ranging from uncovering missing data to predicting the evolution of networks, link prediction has been intensively investigated recently and many methods have been proposed so far. The essential challenge of link prediction is to estimate the similarity between nodes. Most of the existing methods are based on the common neighbor index and its variants. In this paper, we propose to calculate the similarity between nodes by the correlation coefficient. This method is found to be very effective when applied to calculate similarity based on high order paths. We finally fuse the correlation-based method with the resource allocation method, and find that the combined method can substantially outperform the existing methods, especially in sparse networks.
Tracing neuronal tracts in the olfactory pathway of rat and detecting ischemic core in a rat model of focal ischemia using manganese enhanced magnetic resonance imaging
Ke Fang,Yingxia Li,Hua Liu,Weijing Liao,Hao Lei
Chinese Science Bulletin , 2004, DOI: 10.1007/BF03183410
Abstract: Manganese enhanced magnetic resonance imaging (MRI) is a novel neuroimaging technique that can be usedin vivo to trace neuronal tract and to study brain functions dynamically. In this study, manganese enhanced MRI was used to trace the neuronal tracts between the laminar structures of the olfactory bulb (OB) in rat and to study the so-called “calcium overload” phenomenon in a rat model of cerebral ischemia. High spatial resolution images of the OB were obtained and used to measure the transportation rate of Mn2+ among the laminar structures of the OB, which was shown to be approximately 0.2 mm/h under resting condition. In the rat focal ischemia study, it was found that the total area of brain regions with Mn2+ accumulation (representing brain regions with calcium overload) was only 55%±15% of the area of the ischemic brain regions shown by diffusion-weighted imaging (DWI). Manganese enhanced MRI might be more accurate than DWI in detecting the ischemic core at the early stage of experimental cerebral ischemia.
Medical Organization Information Security Management Based on ISO27001 Information Security Standard
Kuo-Hsiung Liao,Hao-En Chueh
Journal of Software , 2012, DOI: 10.4304/jsw.7.4.792-797
Abstract: Most of the information security events in medical organizations are due to improper management. This is a clear indication that the security of information is an issue related to information and communication technology and a management issue as well. In a review of literature, most research on information security has focused on information and communication technology issues, such as network security and access control; rarely addressing issues at the management-level. The main purpose of this study is to construct a mechanism for the management of information with regard to security as it applies to medical organizations. This mechanism is based on the eleven control items and one hundred thirty-three control objectives of the ISO27001 information security management standard. This study analyzes and identifies the most common events related to information security in medical organizations and categorizes these events as high risk, transferable-risk, and controlled-risk to facilitate the management of such risk.
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