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Search Results: 1 - 10 of 61275 matches for " Zhao Jin "
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The (Quasi-)Baerness of Skew Group Ring and Fixed Ring  [PDF]
Hailan Jin, Qinxue Zhao
Advances in Pure Mathematics (APM) , 2011, DOI: 10.4236/apm.2011.16065
Abstract: In this paper, the (quasi-)Baerness of skew group ring and fixed ring is investigated. The following two results are obtained: if R is a simple ring with identity and G an outer automorphism group, then R G is a Baer ring; if R is an Artinian simple ring with identity and G an outer automorphism group, then RG is a Baer ring. Moreover, by decomposing Morita Context ring and Morita Context Theory, we provided several conditions of Morita Context ring, which is formed of skew group ring and fixed ring, to be (quasi-)Baer ring.
Adaptive Cascade Generalized Predictive Control  [PDF]
Tao Geng, Jin Zhao
International Journal of Intelligence Science (IJIS) , 2014, DOI: 10.4236/ijis.2014.43009
Abstract:

Cascade control is one of the most popular structures for process control as it is a special architecture for dealing with disturbances. However, the drawbacks of cascade control are obvious that primary controller and secondary controller should be tuned together, which influences each other. In this paper, a new Adaptive Cascade Generalized Predictive Controller (ACGPC) is introduced. ACGPC is a method issued from GPC and the inner and outer controllers of a cascade system are replaced by one cascade generalized predictive controller, where both loops model are updated by Recursive Least Squares method. Compared with existing methods, the new method is simpler and yet more effective. It can be directly integrated into commercially available industrial auto-tuning systems. Some examples are given to illustrate the effectiveness and robustness of the proposed method.

Prediction of Container Throughput in China  [PDF]
Zhao Jin, Yaozong Ding
Chinese Studies (ChnStd) , 2018, DOI: 10.4236/chnstd.2018.71002
Abstract: In this paper, we will use the time series analysis method to predict the throughput of the research, through the establishment of time series SARIMA model, using the January-February 2017 domestic container throughput statistics of the main container port forecast from March 2017 to December 2020 container throughput data and analyze the trend of the throughput of major container ports in China in the coming year according to the forecast results. At the same time, we will use R software to analyze the time series of the throughput of China’s major container ports. By decomposing the time series and correcting the seasonal differences of the data, a seasonally revised time series chart is obtained. Based on the above analysis, this paper predicts that by 2020 China’s major container port throughput will be at the level of 250 million TEU-270 million TEU.
Interspecific Variation in Compensatory Regrowth to Herbivory Associated with Soil Nutrients in Three Ficus (Moraceae) Saplings
Jin Zhao, Jin Chen
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0045092
Abstract: Plant compensatory regrowth is an induced process that enhances plant tolerance to herbivory. Plant behavior against herbivores differs between species and depends on resource availability, thus making general predictions related to plant compensatory regrowth difficult. To understand how soil nutrients determine the degree of compensatory regrowth for different plant species, we selected saplings of three Ficus species and treated with herbivore insects and artificial injury in both glasshouse conditions and in the field at two soil nutrient levels. Compensatory regrowth was calculated by biomass, relative growth rate and photosynthetic characteristics. A similar pattern was found in both the glasshouse and in the field for species F. hispida, where overcompensatory regrowth was triggered only under fertile conditions, and full compensatory regrowth occurred under infertile conditions. For F. auriculata, overcompensatory regrowth was stimulated only under infertile conditions and full compensatory regrowth occurred under fertile conditions. Ficus racemosa displayed full compensatory regrowth in both soil nutrient levels, but without overcompensatory regrowth following any of the treatments. The three Ficus species differed in biomass allocation following herbivore damage and artificial injury. The root/shoot ratio of F. hispida decreased largely following herbivore damage and artificial injury, while the root/shoot ratio for F. auriculata increased against damage treatments. The increase of shoot and root size for F. hispida and F. auriculata, respectively, appeared to be caused by a significant increase in photosynthesis. The results indicated that shifts in biomass allocation and increased photosynthesis are two of the mechanisms underlying compensatory regrowth. Contrasting patterns among the three Ficus species suggest that further theoretical and empirical work is necessary to better understand the complexity of the plant responses to herbivore damage.
Construction of Accounting Comprehensive Experimental Platform Based on SaaS Mode  [PDF]
Ying Yang, Tao Jin, Yun Zhao
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.37B031
Abstract:

The limitation of accounting experimental teaching software leads to the level of teaching falling behind that of practical applications. In order to solve this problem, it is necessary to construct an accounting comprehensive experimental platform. It is highly feasible to establish such a platform based on SaaS mode. Furthermore, when developing this platform, some new requirements are proposed to the functional design of the platform.

Infinite Number of Disjoint Chaotic Subsystems of Cellular Automaton Rule 106  [PDF]
Gaocang Zhao, Fangyue Chen, Weifeng Jin
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.520303
Abstract: In this paper, the dynamics of rule 106, a Chua’s hyper Bernoulli cellular automata rule, is studied and discussed from the viewpoint of symbolic dynamics. It is presented that rule 106 defines a chaotic subsystem which is topologically mixing and possesses the positive topologically entropy. An effective method of constructing its chaotic subsystems is proposed. Indeed, it is interesting to find that this rule is filled with infinitely many disjoint chaotic subsystems. Special attention is paid to each subsystem on which rule 106 is topologically mixing and possesses the positive topologically entropy. Therefore, it is natural to argue that the intrinsic complexity of rule 106 is high from this viewpoint.
Form Distribution Characteristics of Nitrogen in a Reservoir as Drinking Water Source  [PDF]
Lahua Jin, Chen Zhao, Jiayi Wang
Journal of Environmental Protection (JEP) , 2016, DOI: 10.4236/jep.2016.713156
Abstract: Based on field detected water quality data, the distribution characteristics of different forms of nitrogen in a reservoir as drinking water source in Dongguan, which locates at the Pearl River Delta of China, have been analyzed in order to provide theoretical bases for prevention and reduction of eutrophication. The analyzed results show that nitrogen forms in the influent area of the reservoir are given priority to ammonia nitrogen and nitrate nitrogen, whose proportion is more than 45% respectively, and this is probably caused by the pollution of inflow water quality; but in the effluent area, the forms are given priority to nitrate nitrogen, whose proportion is as high as 96% and above; also the proportion of ammonia nitrogen drops by more than 80% during the process from the influent area to the effluent area, and this shows that the natural process of nitrification and denitrification can be well accomplished in the reservoir. We recommend here that to reduce the input amount of ammonia nitrogen and organic nitrogen into the reservoir is the most efficient way to prevent or mitigate eutrophication of water body.
Complex Behavior in a Fish Algae Consumption Model with Impulsive Control Strategy
Jin Yang,Min Zhao
Discrete Dynamics in Nature and Society , 2011, DOI: 10.1155/2011/163541
Abstract: This paper investigates a dynamic mathematical model of fish algae consumption with an impulsive control strategy analytically. It is proved that the system has a globally asymptotically stable algae-eradication periodic solution and is permanent by using the theory of impulsive equations and small-amplitude perturbation techniques. Numerical results for impulsive perturbations demonstrate the rich dynamic behavior of the system. Further, we have also compared biological control with chemical control. All these results may be useful in controlling eutrophication.
A Mathematical Model for the Dynamics of a Fish Algae Consumption Model with Impulsive Control Strategy
Jin Yang,Min Zhao
Journal of Applied Mathematics , 2012, DOI: 10.1155/2012/452789
Abstract: A dynamic mathematical model of fish algae consumption with an impulsive control strategy is proposed and analyzed in detail. It is shown that the system has a globally asymptotically stable algae-eradication periodic solution which can be obtained using the Floquet theory of impulsive differential equations and small-amplitude perturbation techniques. The conditions for the permanence of the system can also be determined. Numerical results for impulsive perturbations show the rich dynamic behavior of the system. All these results may be useful in controlling eutrophication.
Study on Government Management Mechanism of Energy Conservation and Emission Reduction
AN Jin-Zhao
Journal of Applied Sciences and Environmental Management , 2009,
Abstract: Energy conservation and emission reduction is essential to suitable development and economic development in harmony with the environment. Building the government management mechanism of energy conservation and emission reduction has become an important task of government reforms. Study the retraining factors of energy conservation and emission reduction, and propose legal guarantees, management innovation, technology innovation, service system construction and upgrading of industrial structure are the critical factors to energy conservation and emission reduction management mechanism‘s performance. Then discuss the critical factors deeply. Improve the special legislation, department law linkage and strengthening law enforcement supervision are essential to providing legal guarantees for energy conservation and emission reduction; comprehensive evaluation system and strict control system are essential to management innovation; policy guide and comprehensive utilization is essential to technology innovation; positive policy guide for development of consultation industry is the main task of energy conservation and emission reduction service system construction; high and new technology industries, elimination of outdated production capacity and development of recycling economy are useful for upgrading of industrial structure.
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