Puyang Vocational and Technical College

Henan’an, China

Puyang Vocational and Technical College

Henan’an, China
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Wang X.,Bohai University | Li Y.,Puyang Vocational and Technical College
Algorithms | Year: 2017

In this paper, we present a new sixth-order iterative method for solving nonlinear systems and prove a local convergence result. The new method requires solving five linear systems per iteration. An important feature of the new method is that the LU (lower upper, also called LU factorization) decomposition of the Jacobian matrix is computed only once in each iteration. The computational efficiency index of the new method is compared to that of some known methods. Numerical results are given to show that the convergence behavior of the new method is similar to the existing methods. The new method can be applied to small-and medium-sized nonlinear systems. © 2017 by the authors.

Wang S.,Puyang Vocational and Technical College | Du C.,Yangzhou University | Zhao H.,Yangzhou University
Journal of Chemical Thermodynamics | Year: 2017

The solubility of 4-bromopyrazole in binary (methanol + water) and (ethanol + water) solvent mixtures were investigated by using the isothermal dissolution equilibrium method under atmosphere pressure. The maximum solubility was observed in neat methanol or ethanol. At the same mass fraction of methanol or ethanol and temperature, the solubility of 4-bromopyrazole was greater in (ethanol + water) than in (methanol + water) mixed solvents. The obtained solubility data were correlated with Jouyban-Acree model, modified Apelblat-Jouyban-Acree model and van't Hoff-Jouyban-Acree model. The largest values of relative average deviation and the root-mean-square deviation were 3.59 × 10−2 and 6.60 × 10−3, respectively. Positive apparent enthalpies showed that dissolution of 4-bromopyrazole in these mixed solvents was an endothermic process. Preferential solvation parameters of 4-bromopyrazole were also derived by means of the inverse Kirkwood-Buff integrals method. The preferential solvation parameter was negative in water-rich mixtures but positive in intermediate composition and alcohol-rich mixtures. In the latter case, it is conjecturable that 4-bromopyrazole is acting as a Lewis acid with alcohol molecules. The co-solvent action may be related to the breaking of the ordered structure of water around the polar moieties of 4-bromopyrazole which increases the solvation of this solute. The solubility data and thermodynamic study expanded the physicochemical information about 4-bromopyrazole in binary solvent mixtures. © 2017 Elsevier Ltd

Lu J.Y.,National Center for Space Weather | Liu Z.-Q.,University of Chinese Academy of Sciences | Kabin K.,Royal Military College of Canada | Zhao M.X.,National Center for Space Weather | And 3 more authors.
Journal of Geophysical Research: Space Physics | Year: 2011

The numerical results from a physics-based global magnetohydrodynamic (MHD) model are used to examine the relationship between the shape and size of the magnetopause and the solar wind conditions. The magnetopause location is identified by tracing three-dimensional streamlines through the simulation domain and is fitted by simple analytical functions. The resulting model is applicable for approximating magnetopause location for dipole tilt angle ∼0 and interplanetary magnetic field (IMF) BX and BY = 0 nT at both low and high magnetospheric latitudes. In both regions the results are compared with available empirical models. It is shown that IMF BZ mainly affects the flaring angle (the magnetopause shape) and has smaller effects on the magnetopause size. In contrast, the solar wind DP mainly affects the magnetopause standoff distance (magnetopause size) and has little effect on the magnetopause shape. Both conclusions are consistent with empirical models. Copyright 2011 by the American Geophysical Union.

Zhou Q.,China University of Petroleum - Beijing | Wang G.,Puyang Vocational and Technical College | Xie G.,Henan Institute of Science and Technology
Journal of Separation Science | Year: 2013

Benzoylurea (BU) insecticides have contributed greatly to the output of crops. Their residue in the environment put serious threats on human health and environmental safety. In this study, we have established a new, rapid, and reliable method for the monitoring of typical BU insecticides such as diflubenzuron, flufenoxuron, triflumuron, and chlorfluazuron with dispersive liquid-liquid microextraction prior to HPLC. Chlorobenzene and ethanol were employed as the extraction solvent and disperser solvent, respectively. The possible parameters which would influence the extraction efficiency such as the kinds and volumes of extraction and disperser solvents, extraction time, sample pH, centrifuging time, and salting-out effect were optimized in detail. Under the optimal conditions, the linear range of proposed method was in the range of 1.0-70 μg/L. The detection limits varied from 0.24 to 0.82 μg/L and the precision of the method was <6.5% (RSD, n = 6). The proposed method was validated with real water samples and satisfactory spiked recoveries were achieved. All these results indicate that the proposed method is a low cost, easy to operate, efficient, and sensitive method for the analysis of BU insecticides in water samples. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Gao F.,Puyang Vocational and Technical College
International Journal of Simulation: Systems, Science and Technology | Year: 2016

In a network environment, an internal accounting information system helps to strengthen its capabilities, diversify its means of control, deal with more stringent requirements, and expand its scope. An accounting information system should also be subject to further development and changes to give enterprises great benefits, and its internal control should expose new problems and challenges. In this paper, we investigate through analysis of the lower levels of the network of environmental accounting information system to explore i) accounting control, ii) its mode of basic internal control of accounting information systems, iii) real-time control research network environment, iv) the accounting process reengineering processes to construct theoretical models of accounting controls, and v) how it can more effectively play the role of real-time control to provide theoretical support. © 2016, UK Simulation Society. All rights reserved.

Liang C.-S.,Puyang Vocational and Technical College
Lecture Notes in Electrical Engineering | Year: 2012

The higher vocational course reform, based on the working process, is one of the core contents of the 21st century's vocational education reform, which can be mainly realized through schools-business cooperation and achieved based on the integration of work and study as well as the creation of the teaching mode scenarios. The guidance of the curriculum implementation lies in action. Meanwhile, great attention should be paid to consummate the training conditions, the establishment of working scenes, the reform of inspection and the development of teaching resources. It has manifested the characteristic of higher vocational education, which is advantageous in raising the students' competence in post and their professional quality. © 2012 Springer-Verlag GmbH.

Liang C.-S.,Puyang Vocational and Technical College
Lecture Notes in Electrical Engineering | Year: 2012

Nowadays parallel computing has been applied in more and more fields, The Linux-based PC cluster is a cheap and efficient parallel computing system. The software and hardware environment in building clusters was introduced, including the construction of nodes, selection of operation system, SSI, and construction methods of MPI parallel environment. The cluster is implemented with several PC in the lab, the detailed process of software configuration is also provided,the programming condition is provided for parallel calculation on the cluster. © 2012 Springer-Verlag GmbH.

Zhang B.,Puyang Vocational and Technical College
Advances in Intelligent Systems and Computing | Year: 2013

Physics teaching is important to cultivate students' scientific inquiry ability and innovation ability. Based on the recognition of context for physics teaching and the discussion on the theoretical foundations for the design of virtual laboratories for teaching, this paper reported the construction, characteristics, and application scenarios of a network virtual laboratory for physics teaching in high school. © 2013 Springer-Verlag.

Chen J.,Puyang Vocational and Technical College
Proceedings - 2015 International Conference on Intelligent Transportation, Big Data and Smart City, ICITBS 2015 | Year: 2015

This article aimed at the questions that learner exists in the current study, and proposed the tentative plan through constructs "Discipline knowledge map" in the network environment to guidance study. Carried on the plan and the design to the knowledge map in the network, and developed a discipline knowledge map model of electronic technology domain using network database, network programming, browser cartography technical method and so on, expected to help studies of the learner. Summarized the significance of the research. © 2016 IEEE.

Liang C.-S.,Puyang Vocational and Technical College
Advances in Intelligent and Soft Computing | Year: 2012

Uniform charged spherical sphere generated by the electric field in the sphere inside and outside electric field strength distribution is very simple, but it is difficult to obtain the spherical surface of the electric field strength with Gauss's law . This article introduced the integral calculation and deductive analytic two methods, using field strength's principle of superposition to calculate the electric field strength value of the charged spherical surface, to obtain a complete electric field strength distribution of the uniformly charged spherical generated electric field . According to the investigation, the present study is the first example. © 2012 Springer-Verlag GmbH.

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