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Taian, China

Liu Y.,Central University of Finance and Economics | Chen J.,Peking University | Hu W.,Shandong Institute of Light Industry | Zhu L.-L.,Taishan College
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences | Year: 2011

The separation transformation method is extended to the (1+N)-dimensional triple Sine-Gordon equation and a special type of implicitly exact solution for this equation is obtained. The exact solution contains an arbitrary function which may lead to abundant localized structures of the highdimensional nonlinear wave equations. The separation transformation method in this paper can also be applied to other kinds of high-dimensional nonlinear wave equations. © 2011 Verlag der Zeitschrift für Naturforschung, Tübingen. Source

Yan-xiang G.,Taishan College
Chinese Astronomy and Astrophysics | Year: 2010

Starting from the differential equation of motion of photons on equatorial plane and in spherically symmetric field of gravitation and adopting the post-Newtonian approximate method, the post-post-Newtonian amendments of radar echo delay test in the Reissner-Nordström metric field are investigated. Via calculations the post-Newtionian and post-post-Newtonian amendments are obtained. When the electric charge Q is equal to zero, these results are applicable to electrically neutral celestial bodies, and the amendments of post-Newtonian parts are consistent with those provided by classical literature. The approximate expansion used in this paper can also be adopted to probe the amendments of still higher orders. The high-order amendments for radar echo have important significance to the ongoing high-precision spatial gravitation tests. © 2010. Source

Li C.,Shandong University | Li C.,Taishan College | Wang Y.,Shandong University
International Journal of Control, Automation and Systems | Year: 2013

This paper investigates the input disturbance suppression problem for nonlinear Port-Controlled Hamiltonian (PCH) system and presents a number of new results on the controllers design via the internal model approach. Different from the existing results on this topic we consider two cases. Firstly, the case of the disturbance generated from a linear Hamiltonian system acts through a channel other than the input channel is studied by adopting a method of decomposing the control into two parts and designing an internal model to zero the effect of the exogenous disturbance. Secondly, the case of the disturbance generated from a bounded nonlinear exosystem is studied by presenting a procedure of designing a nonlinear internal model to cancel the effect of the disturbance under two fundamental assumptions. Moreover, to further improve the suppression, a more effective internal model is also designed under less hypotheses. Finally, as an useful application, a corollary is presented by applying these results on PCH system to general nonlinear affine system. Simulations of a third-order synchronous generator model with disturbance generated from a nonlinear exosystem show the effectiveness of the designed internal model. © 2013 Institute of Control, Robotics and Systems and The Korean Institute of Electrical Engineers and Springer-Verlag Berlin Heidelberg. Source

Wang X.,Taishan College
Applied Mechanics and Materials | Year: 2014

Now environment basic public service is an important component of basic public service in China. However, there are deficient & unbalanced supply, single mode of supply, backward technology and other problems in environment basic public service. This needs to use scientific and technological innovation to change this situation. The trend of innovation is to use the technology of big data to establish the system of wisdom environment public service. © (2014) Trans Tech Publications, Switzerland. Source

Xiao G.,CAS Institute of Earth Environment | Xiao G.,Wuhan University | Guo Z.,CAS Institute of Geology and Geophysics | Dupont-Nivet G.,CNRS Geosciences Laboratory of Rennes | And 10 more authors.
Earth and Planetary Science Letters | Year: 2012

The growth history of the Tibetan Plateau provides a valuable natural laboratory to understand tectonic processes of the India-Asia collision and their impact on and interactions with Asian and global climate change. However, both Tibetan Plateau growth and Asian paleoenvironments are generally poorly documented in pre-Pliocene times and reflect limited temporal coverage for different parts of the plateau. Here we present magnetostratigraphic results from the Xining Basin, at the NE margin of the Tibetan Plateau, precisely dating the record between the earliest Oligocene (~33. Ma) to the middle Miocene (~16. Ma). The pattern of observed paleomagnetic polarity zones is unequivocally correlated to the geomagnetic polarity time scale (GPTS) indicating relatively constant and low sediment accumulation rates (32. m/Myr) except for a peculiar period of unstable accumulation between 25.3 and 19.7. Ma. At the beginning of this interval, a marked permanent increase in magnetite content of the sediments is observed and likely relates to a change in provenance. We directly relate this unstable period of sediment accumulation and provenance change to the coeval exhumation recently reported by low-temperature thermochronology from the Laji Shan range, which subsequently formed the southern margin of the Xining Basin. Evidence for NE Tibet tectonism at 25-20. Ma can be associated with widespread deformation over the entire Himalayan-Tibetan orogen at this time, which may be linked to the coeval appearance of monsoon climate in Eastern Asia and the onset of central Asian desertification. © 2011 Elsevier B.V. Source

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