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Tai'an, China

Shandong University of Science and Technology established in 1951 is a university in Shandong province, China. It offers courses in science and technology. Wikipedia.

Wang Y.,Shandong University of Science and Technology
International Journal of Materials Research | Year: 2014

Conductive polymers are widely studied as microwave absorbing materials due to their light weight, corrosion resistance, good and flexible processibility and variability of conductivity. Among them, polyaniline (PANI) microwave absorbing materials have been studied most extensively because of their easier and inexpensive preparation methods, good environmental stability in both doped and undoped forms, excellent physical and chemical properties, high conductivity at microwave frequencies and unique doping mechanism with its ease of protonic acid doping in the emeraldine form. In this paper, the preparation and the microwave properties of PANI/inorganics composites and PANI/insulating polymer composites are thoroughly reported. © Carl Hanser Verlag GmbH and Co. KG.

Xu M.,Shandong University of Science and Technology
Energy | Year: 2012

A variational principle for heat conduction is formulated which results in the steady state heat conduction equation established from the Fourier law. Furthermore based on the thermodynamics in terms of entransy a more general functional is defined for incompressible fluids. We show that extremizing this functional gives rise to the state described by the Navier-Stokes-Fourier equations with vanishing substantive derivatives of the temperature and velocity field. In this sense one may conclude that this variational principle is consistent with the Navier-Stokes-Fourier equations. Therefore the variational principle developed in the present work demonstrates a great advantage over the minimum entropy production principle. © 2012 Elsevier Ltd.

Xu M.,Shandong University of Science and Technology
Journal of Heat Transfer | Year: 2011

The thermal vibration phenomenon occurring in the dual-phase-lagging heat conduction violates the second law of thermodynamics under the local equilibrium assumption. In order to resolve this paradox, two types of the extended irreversible thermodynamics are developed in the present work, which make the dual-phase-lagging heat conduction model compatible with the second law of thermodynamics. It is also shown that these extended irreversible thermodynamics can give rise to the Maxwell model for the viscoelastic fluid flow. © 2011 American Society of Mechanical Engineers.

Chu M.,Shandong University of Science and Technology
Modern Tunnelling Technology | Year: 2014

The support resistance of surrounding rock in deep tunnels is determined by the pressure and displacement of surrounding rock obtained by theoretical calculations and the relationship between the support and displacement analyzed by the P-U figure. The range of the support resistance can be determined based on the quantitative calculation of pressure and displacement of the surrounding rock of the deep tunnel, and the support scheme and schedule can be selected considering the relationship between the surrounding rock and support in the P-U figure. This method has been applied to the support of the pump chamber of the Longgu coal mine, and the results show that: (1) The calculated pressure and displacement of the surrounding rock conform with engineering practice and the reasonable range of support resistance of a pump chamber is 4 ~ 6MPa; (2) The support scheme and schedule can be determined based on the support resistances and P-U figure; (3) The achievements have been successfully applied to coal mine engineering.

Yang L.,Shandong University of Science and Technology
Sensors (Basel, Switzerland) | Year: 2013

Region of Interest (ROI) extraction is a crucial step in an automatic finger vein recognition system. The aim of ROI extraction is to decide which part of the image is suitable for finger vein feature extraction. This paper proposes a finger vein ROI extraction method which is robust to finger displacement and rotation. First, we determine the middle line of the finger, which will be used to correct the image skew. Then, a sliding window is used to detect the phalangeal joints and further to ascertain the height of ROI. Last, for the corrective image with certain height, we will obtain the ROI by using the internal tangents of finger edges as the left and right boundary. The experimental results show that the proposed method can extract ROI more accurately and effectively compared with other methods, and thus improve the performance of finger vein identification system. Besides, to acquire the high quality finger vein image during the capture process, we propose eight criteria for finger vein capture from different aspects and these criteria should be helpful to some extent for finger vein capture.

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