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Jinan, China

Yang Z.,Shandong Polytechnic University | Xing J.,Jigang Group Co Ltd | Wang X.,Shandong Polytechnic University
2011 International Conference on Electrical and Control Engineering, ICECE 2011 - Proceedings | Year: 2011

This article explains how to improve the traditional workflow process meta-model, and then proposes the improved knowledge flow model on the traditional model. Elaborates further on the combination of workflow technology and knowledge flow, and how to be used this in enterprise knowledge management system. © 2011 IEEE. Source


Liu X.,Jinan Vocational College | Feng F.,Jigang Group Co Ltd
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2014

The coding efficiency of H.264/AVC standard is improved twice as large as that of MPEG-2 standard, yet its computational complexity is also greatly increased. Coupled with the real-time computing constraints in the actual application environment, the hardware implementation of H.264/AVC decoding chipset is a huge challenge. Based on H.264/AVC SoC platform solution, a reconfigurable intra prediction decoder is proposed in this paper. All the parallel arithmetic units are concentrated in a computing module, and the input data of the computing module are controlled in different modes, respectively, to achieve the reconfigurable architecture of predictor. Meanwhile, four parallel modules of the same structure are adopted to improve the processing capacity, so that the predicted values of four pixels can be generated simultaneously. Simulation results show that the design is very suitable to be integrated into H.264/AVC decoding chipset. © Sila Science. All rights reserved. Source


Yang L.,Dalian Maritime University | Zhong J.-J.,Dalian Maritime University | Han J.-A.,Dalian Maritime University | Meng L.-L.,Jigang Group Co Ltd
Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | Year: 2012

The three dimensional Reynolds-averaged Navier-Stokes equations and the Spalart-Allmaras turbulent model are adopted to simulate numerically a flow field of the three dimensional flow-path of the ram-rotor with two kinds of throat contract ratio and five kinds of strake stagger angle. It has been found that the throat contract ratio can affect the shock wave structure and performance obviously. The flow speed is subsonic when the throat contract ratio is larger. The ram-rotor has higher adiabatic efficiency, total pressure ratio and static pressure ratio when the throat contract ratio is lower. With the increasing of the strake straggle angle, the flow angle and the total pressure ratio decrease. In order to improve the overall performance and the flow field structure of the ram-rotor, the reasonable compromises should be made among the adiabatic efficiency, the total pressure ratio, the flow angle, the mass flow rate, the width of the ram-rotor, and so on. Case with throat contract ratio 0.6 and strake stagger angle 12° has the optimal configuration in the study of this paper. Source


Wang L.-M.,Control Iron and Steel Research Institute, China | Zhang H.,CAS Technical Institute of Physics and Chemistry | Liu N.,Jigang Group Co Ltd | Liu Z.-D.,Control Iron and Steel Research Institute, China | And 2 more authors.
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | Year: 2012

Hot compression experiments on three high-alloy martensitic heat-resistant steels of 0Cr11Ni2MoVNb, 1Cr20Co6Ni2Mo1WV and 403Nb were carried out by using a Gleeble-3500 simulator. The results show that the apparent activation energy for hot working of these alloys is 461.6 kJ/mol, 508.1 kJ/mol and 571.1 kJ/mol, respectively. Comparing this work with other researches', it can be concluded that the main factor affecting the apparent activation in steels is carbon and alloy element content. For plain steels and micro-alloyed steels, because the amount of alloy elements is small and the carbides formed are also few, the carbon content has no obvious effect on the apparent activation energy. However, for high-alloy steels, because the carbides, especially the thin NbC particles have a drag effect on dislocations and alloy elements have solid solution strength effect, the apparent activation energy increases with the increasing of content of carbon and alloy elements. Source


Mu L.,Shandong University | Shi J.,Shandong University | Li X.,Jigang Group Co Ltd
Advanced Materials Research | Year: 2012

Impact loads in large iron and steel enterprise bring the power system reactive power impact, which makes the fluctuation of the system voltage, power factor and other parameters are out of the limitation of the national standard. Substation bus reactive load forecasting in large iron and steel enterprise can be introduced to determine reactive power optimization strategy and the switching of capacitors. In this paper, a combination forecasting model of quadratic self-adaptive exponential smoothing (QSES) model and converse exponential (CE) model has been proposed for substation bus reactive load forecasting. The numerical results in Jinan iron and steel Group show the application of this model is encouraging. © (2012) Trans Tech Publications, Switzerland. Source

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