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Search Results: 1 - 10 of 38339 matches for " JIN Hao? "
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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.
Maximization of Wealth in a Jump-Diffusion Model
Yunfeng YANG,Hao JIN
Studies in Mathematical Sciences , 2013, DOI: 10.3968/j.sms.1923845220130601.105
Abstract: This paper study the problem of wealth optimization when jump-diffusion asset price model being driven by a count process that more general than Poisson process. It is found unique equivalent martingale measure, we employ the conventional stochastic analysis methods. It is proved that the existence of an optimal portfolio and consumption process. The optimal wealth process, the value function, the optimal portfolio and consumption process are given.
Wealth Optimization Models with Stochastic Volatility and Continuous Dividends
YANG Yunfeng,JIN Hao
International Business and Management , 2013, DOI: 10.3968/j.ibm.1923842820130601.1115
Abstract: This paper study the problem of wealth optimization.It is established that the behavior model of the stock pricing process is jump-diffusion driven by a count process and stochastic volatility. Supposing that risk assets pay continuous dividend regarded as the function of time. It is proved that the existence of an optimal portfolio and unique equivalent martingale measure by stochastic analysis methods. The unique equivalent martingale measure ,the optimal wealth process, the value function and the optimal portfolio are deduced. Key words: Jump-Diffusion process; Stochastic volatility; Dividends; Incomplete financial market; Wealth optimization
An Improved Flowchart for Gabor Order Tracking with Gaussian Window as the Analysis Window
Yang Jin,Zhiyong Hao
EURASIP Journal on Advances in Signal Processing , 2011, DOI: 10.1155/2011/507215
Modification Effect of Nano-Graphene Oxide on Properties and Structure of Polysulfone Ultrafiltration Membrane  [PDF]
Hao Yuan, Lahua Jin, Dan Luo, Chen Ge
Journal of Environmental Protection (JEP) , 2018, DOI: 10.4236/jep.2018.911074
Abstract: In order to improve the purification properties of polysulfone (PSF) ultrafiltration membranes (UFM), nano-graphene oxide (nano-GO) was taken as modifier, and the physical blending process was adopted in our experiment. The microstructure, surface morphology and functional groups of modified UFM have been characterized respectively by scanning electron microscopy, atomic force microscopy and Fourier transform infrared spectroscopy, and the static contact angle between the membrane surface and the water droplet has also been detected to show the change of its hydrophilicity. Through experiments, it has been found that modified UFM has larger and more developed finger micro-pores, and there exist a large number of -OH groups on its surface, and also its hydrophilicity has been enhanced. The result of the experiments show that the modified UFM may keep rejection above 97% and its water flux can be reached at about 219.1 L/(m2·h) under pressure of 1 bar if 0.4 wt% of nano-GO was added. Additionally, the nano-GO can increase the flux recovery radio (FRR) of the membranes, and the maximum FRR was observed as 74.4% if 0.3 wt% of nano-GO was appended.
LTR retrotransposon landscape in Medicago truncatula: more rapid removal than in rice
Hao Wang, Jin-Song Liu
BMC Genomics , 2008, DOI: 10.1186/1471-2164-9-382
Abstract: We use a newly developed tool LTR_FINDER to identify LTR retrotransposons in the Mt genome and detect 526 full-length elements as well as a great number of copies related to them. These elements constitute about 9.6% of currently available genomic sequences. They are classified into 85 families of which 64 are reported for the first time. The majority of the LTR retrotransposons belong to either Copia or Gypsy superfamily and the others are categorized as TRIMs or LARDs by their length. We find that the copy-number of Copia-like families is 3 times more than that of Gypsy-like ones but the latter contribute more to the genome. The analysis of PBS and protein-coding domain structure of the LTR families reveals that they tend to use only 4–5 types of tRNAs and many families have quite conservative ORFs besides known TE domains. For several important families, we describe in detail their abundance, conservation, insertion time and structure. We investigate the amplification-deletion pattern of the elements and find that the detectable full-length elements are relatively young and most of them were inserted within the last 0.52 MY. We also estimate that more than ten million bp of the Mt genomic sequences have been removed by the deletion of LTR elements and the removal of the full-length structures in Mt has been more rapid than in rice.This report is the first comprehensive description and analysis of LTR retrotransposons in the Mt genome. Many important novel LTR families were discovered and their evolution is elucidated. Our results may outline the LTR retrotransposon landscape of the model legume.Transposable elements (TEs) are mobile repetitive DNA that have been found in virtually all eukaryotic genomes investigated so far [1-3]. LTR retrotransposons are class I TEs that transpose in a "copy and paste" mode via RNA intermediates. Typical structural characters of a LTR retrotransposon include: 1) two highly similar LTR sequences from several hundred to several tho
Thermodynamic Calculation of the SrO-Nb2O5 System
Thermodynamic Calculation of the SrO-Nb_2O_5 System

Ying YANG,Hao YU,Zhanpeng JIN,

材料科学技术学报 , 1999,
Abstract: The SrO-Nb2O5 quasibinary system is assessed using the Calculation of Phase Diagram (CALPHAD) technique. A set of self-consistent parameters is obtained and the calculated phase diagram is consistent with the experimental data. It is suggested that further tentative investigation is required especially in the SrO-riched region.
GaN-based heterostructures: electric--static equilibrium and boundary conditions

Zhang Jin-Feng,Hao Yue,

中国物理 B , 2006,
Abstract: In the GaN-based heterostructures, this paper reports that the strong electric fields induced by polarization effects at the structure boundaries complicate the electric--static equilibrium and the boundary conditions. The basic requirements of electric--static equilibrium for the heterostructure systems are discussed first, and it is deduced that in the application of the coupled Schr\"{o}dinger--Poisson model to the heterostructures of electric--static equilibrium state, zero external electric field guarantees the overall electric neutrality, and there is no need to introduce the charge balance equation. Then the relation between the screening of the polar charges in GaN-based heterostructures and the possible boundary conditions of the Poisson equation is analysed, it is shown that the various boundary conditions are equivalent to each other, and the surface charge, which can be used in studying the screening of the polar charges, can be precisely solved even if only the conduction band energy is correctly known at the surface. Finally, through the calculations on an AlGaN/GaN heterostructure with typical structure parameters by the coupled Schr\"{o}dinger--Poisson model under the various boundary conditions, the correctness of the above analyses are validated.
Improved Classification Methods for Brain Computer Interface System
YI Fang,LI Hao,JIN Xiaojie
International Journal of Computer Network and Information Security , 2012,
Abstract: Brain computer interface (BCI) aims at providing a new communication way without brain’s normal output through nerve and muscle. The electroencephalography (EEG) has been widely used for BCI system because it is a non-invasive approach. For the EEG signals of left and right hand motor imagery, the event-related desynchronization (ERD) and event-related synchronization(ERS) are used as classification features in this paper. The raw data are transformed by nonlinear methods and classified by Fisher classifier. Compared with the linear methods, the classification accuracy can get an obvious increase to 86.25%. Two different nonlinear transform were arised and one of them is under the consideration of the relativity of two channels of EEG signals. With these nonlinear transform, the performance are also stable with the balance of two misclassifications.
Dynamic Pool Segmentation Model and Algorithm in the Car Rental Industry
Yazao Yang,Wenzhou Jin,Xiaoni Hao
Journal of Computers , 2009, DOI: 10.4304/jcp.4.12.1202-1208
Abstract: Pool segmentation is an essential step in the logistics management process for large-scale car rental business. Its main function involves dynamic decisions about pools clustering and regional logistics management centers selecting, whose goal is to optimize fleet utilization and improve the logistics management efficiency. According to developing mode of car rental enterprises and layout of leasing sites, a three-tier structure is presented to describe the logistics management relations among each leasing sites. Based on the logistics operation characteristics and practical administration demand, a dynamic model and its algorithm are proposed for pool segmentation in the car rental industry. A case study shows that the proposed methodology is feasible and effective.
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