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Search Results: 1 - 10 of 4173 matches for " Guiming Miao "
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Application of Hierarchical Model in Non-Life Insurance Actuarial Science  [PDF]
Guiming Miao
Modern Economy (ME) , 2018, DOI: 10.4236/me.2018.93025
Abstract: Loss data structures in non-life insurance businesses are increasingly complex, and the tendency of correlation and heterogeneity is gradually presented. Hierarchical model can breakthrough limitation that the traditional rate determination method only analyzes the loss data of the same insurance policy; meanwhile, the accuracy of complex structure data prediction is improved. This paper, using a hierarchical generalized linear model, studies the non-life rate determination of multi-year loss data and takes auto insurance data for empirical analysis. The research results show that GLMM’s fitting degree is greatly improved compared with GLM, considering the random effects. It can more effectively reflect different risk individual differences and also reveal the heterogeneity and correlation of risk individual loss during multiple insurance periods.
A Framework of Stability Analysis for Multi-agent Systems on Arbitrary Topology Graph: Linear Systems
Wang Yong,Li Guiming
Computer Science , 2015,
Abstract: In this paper, from the structural perspective, we propose a new stability analysis approach for the consensus of linear multi-agent systems. Different from the general tools: the Laplacian matrix based method and the Lyapunov's method, this approach treats the multi-agent system as the composition of many isolated agents, and focuses on their special input and output relationship. Through transforming the construction of a graph into a standard procedure only including three basic structures, the stability analysis is recursive and independent of the specific topology. Therefore, this approach can be used for multi-agent systems on any topology graph.
PLC Modeling and Checking Based on Formal Method  [PDF]
Yueshan Zheng, Guiming Luo, Junbo Sun, Junjie Zhang, Zhenfeng Wang
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.311124
Abstract: High reliability is the key to performance of electrical control equipment. PLC combines computer technology, automatic control technology and communication technology and becomes widely used for automation of industrial processes. Some requirements of complex PLC systems cannot be satisfied by the traditional verification methods. In this paper, an efficient method for the PLC systems modeling and verification is proposed. To ensure the high-speed property of PLC, we proposed a technique of “Time interval model” and “notice-waiting”. It could reduce the state space and make it possible to verify some complex PLC systems. Also, the conversion from the built PLC model to the Promela language is obtained and a tool PLC-Checker for modeling and checking PLC systems are designed. Using PLC-Checker to check a classical PLC example, a counter-example is found. Although the probability of this logic error occurs very small, it could result in system crash fatally.
Study on Regional Efficiency and Productivity of Guangdong Province
—Based on Hicks-Moorsteen TFP Index
 [PDF]

Jia Miao
Modern Economy (ME) , 2018, DOI: 10.4236/me.2018.912134
Abstract: In this paper, Hicks-Moorsteen TFP index is employed to investigate regional efficiency and productivity of 21 cities in Guangdong province during 2000-2015. The findings demonstrate that the efficiency of the whole province first rises and then falls, and has rebounded in recent years. Technical efficiency and scope efficiency have increased, while regional scale efficiency has declined. The Pearl River Delta region has obvious competitive advantages, and scope efficiency alleviates the decline in the efficiency of the non PRD. Secondly, the results indicate that Shenzhen has strong regional development competitiveness, and the economic development efficiency which leads Guangdong province. Thirdly, although the total factor productivity of 21 cities in Guangdong province has increase 0.38 percent with an average level of 1.0165 during this period with a comparatively large fluctuation, the slow growth of technological progress hindered the progress of TFP to some extent. In addition, the TFP level in the PRD region has some advantages over the non PRD region. Finally, as the most efficient city, Shenzhen’s TFP level is in the middle and upper reaches and has great potential.
Literature Review of the Research on Real Estate Financial Risk  [PDF]
Yemin Miao
Open Journal of Business and Management (OJBM) , 2019, DOI: 10.4236/ojbm.2019.72060
Abstract: After a brief conceptual explanation and background introduction of real estate finance and its risks, this paper mainly focuses on the relationship between real estate price fluctuation and financial risk, real estate bubble, the formation and transmission of real estate financial risk, and the control of real estate financial risk. Several research categories were classified and related research was reviewed. In the end, it summarizes and puts forward that China’s research on real estate financial risk also has the following problems and development direction: the research on the connotation of real estate financial risk needs to be improved; the research on real estate bubble needs to be quantified; the research on risk formation needs to be deepened from the mechanism; the research on risk transmission needs to be combined with the reality of China; and the empirical research on real estate financial risk needs to be improved.
2DGE-coomassie brilliant blue staining used to differentiate pasteurized milk from reconstituted milk  [PDF]
Yajun Wu, Ying Chen, Bin Wang, Haiyan Wang, Fei Yuan, Guiming Zhao
Health (Health) , 2009, DOI: 10.4236/health.2009.13024
Abstract: Differentiating pasteurized milk and reconsti-tuted milk by scientific approach was necessary to defend consumer from economic fraud of wrong labeling. In this paper 2DGE (2 Dimen-sional Gel Electrophoresis)-coomassie brilliant blue staining method was employed and sig-nificant color intensity changing was observed among raw milk, pasteurized milk, UHT milk and reconstituted milk. For example, the intensity of 10 protein spots including casein and lac-toglobulin reduced more than two folds from pasteurized milk to reconstituted milk. However, DIGE (Differential Gel Electrophoresis) assay showed that the majority protein remained simi-lar level from pasteurized milk to reconstituted milk. Therefore the color fading of coomassie brilliant blue stained 2D gels may be due to other biochemical reaction, such as Maillard reaction, instead of protein degradation. Stability of 2DGE pattern was confirmed by running six gels of the same sample in parallel and software analysis showed that all proteins were at similar level. Two commercialized pasteurized milk samples and one reconstituted milk sample were tested by 2DGE-coomassie blue staining method and re-constituted milk could be easily identified.
Breakdown of lawsonite subsequent to peak UHP metamorphism in the Dabie terrane and its implication for fluid activity
Xuping Li,Yiliang Li,Guiming Shu
Chinese Science Bulletin , 2005, DOI: 10.1360/982004-407
Abstract: Abundant occurrences of quartz vein within eclogites in the Dabie-Sulu orogen provide us an opportunity to study metamorphic fluid flow during subduction and exhumation of continental crust. It is, however, usually short of petrological constraints on pressure and temperature of vein formation. This study focuses on kyanite-quartz veins within low-T/high-P eclogite in the Dabie terrane that contain unique polycrystalline aggregates, interpreted as pseudomorphs after porphyroblasts of lawsonite. Coesite pseudomorphs were found for the first time in garnet from eclogite, resulting in a revised estimate of peak P-T conditions at 670 °C and 3.3 GPa for the eclogite. This indicates a stability field at graphite/diamond transition, thus upgrading the HP unit to a UHP unit. Neither foliation texture, undulose extinction of quartz nor coesite were observed in quartz veins, although the peak P-T conditions were estimated the same as that in host eclogite in light of thermodynamic calculation based on mineral assemblage in kyanite-quartz veins. Therefore, the formation of the kyanite-quartz veins as well as the breakdown of lawsonite into the kyanite-quartz-zoisite assemblage took place during exhumation subsequent to the peak UHP conditions. In this regard, the continental subduction not only brought the water of water-bearing mineral such as lawsonite into the deep mantle, but also released the water from the mineral during exhumation.
Phase relationship between the relative sunspot number and solar 10.7 cm flux
XueFeng Zhang,GuiMing Le,YanXia Zhang
Chinese Science Bulletin , 2012, DOI: 10.1007/s11434-012-5104-4
Abstract: A range of analysis approaches, namely continuous wavelet, cross wavelet, and wavelet coherence analyses, are employed to clarify the phase relationship between the smoothed monthly mean sunspot number and solar 10.7 cm flux (F10.7). Analysis shows that there is a region of high spectral power sitting across the Schwabe cycle belt, where the two time series are in phase. However, analysis of the cross-wavelet transform and wavelet coherence unveils asynchronous behavior featured with phase mixing in the high-frequency components of sunspot activity and solar F10.7, which may explain the different activity properties of the photosphere and corona on a short time scale.
A comparative analysis on two solar proton events
GuiMing Le,YanBen Han,YiJun Zhang
Chinese Science Bulletin , 2007, DOI: 10.1007/s11434-007-2220-7
Abstract: This paper presents a comparative analysis on the two Solar Proton Events (SPE), which occurred on 14 July 2000 (Bastille Day) and 28 October 2003 (28OCT03) respectively. It is found that although the peak flux of the latter seemed to be greater than that of the former based on geostationary observations, the maximum intensities of the energetic protons (>10 MeV and 30 MeV) during the Bastille Day event were all higher than those of the 28OCT03 event according to the interplanetary observations. Further analysis indicated that the quantity of the seed particles, which could be accelerated to the energies exceeding 10 and 30 MeV by the Coronal Mass Ejection (CME)-driven shock on 14 July 2000, was far larger than that of the 28OCT03 event. In the Bastille Day case, when the CME approached to the height around 14 R⊙, the CME-driven shock would reach its maximum capacity in accelerating the solar energetic protons (>100 MeV). In contrast, on 28 October 2003, when CME approached to the height about 58R⊙, the CME-driven shock reached its highest potential in accelerating the solar energetic protons of the same category. At this moment, the peak flux (>100 MeV) was about 155 pfu, which was much lower than 355 pfu measured on 14 July 2000. This demonstrated that in the Bastille Day event, the quantity of the seed particles, which could be accelerated to the energy beyond 100 MeV, was significantly larger than its counterpart in the 28OCT03 case. Therefore, the peak flux of an SPE event depends not only on the interplanetary intensity of the solar energetic particles, but also on the velocity of the associated CME-driven shock, and the quantity of the seed particles as well as on the interplanetary magnetic environment. This paper also reveals that the magnetic sheath associated with ICME on 28 October 2003 captured a large number of solar energetic protons, including those having energy greater than 100 MeV.
Solar release time of solar energetic particles and associated acceleration source in corona
GuiMing Le,YuHua Tang,YanBen Han
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-0030-1
Abstract: Solar energetic particles (SEPs) are accelerated in corona at an early phase of solar energetic particle events (SEPE). The acceleration mechanism of SEPs in corona can only be inferred from an analysis of multi-band observational data, as the observation of SEPs is usually made around 1AU. In this context, people have investigated spectrums, charge state, solar release time (SRT), and multi-band data of SEPEs, in an attempt to judge the acceleration mechanism of SEPs. The SRT computation of SEPs is an important and commonly used approach to study the acceleration mechanism of SEPs in corona. This paper reviews some important findings concerning the SRT computation of SEPs, and analyzes different merits of each approach for such calculation, based on a range of SEPE case studies. This paper also analyzes and discusses both possible and actual acceleration mechanisms of a number of SEPEs, by calculating the SRT of the SEPEs. Finally, the paper summarizes the possible problems in studying an acceleration mechanism of SEPEs inferred from the SRT of SEP.
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