Chen J.,Shandong Jiaotong University
ICIC Express Letters | Year: 2017
This paper presents a robust supply chain network design model involving multi-product, multi-period and multi-echelon under uncertain demand. It aims to form a systematic solution including facility location and capacity design, supply plan, production plan and delivery plan. The uncertainty of demand is described by means of scenario approach. Following with multiple criteria evaluation, the optimal objective is the weighted sum of total cost, variance of total cost and penalty cost of inventory shortage. Limits of supply and delivery distance are incorporated in the proposed model. The supply limits include two parts, where the minimum supply quantity from an arbitrary supplier to its customers is regulated, and the demand from a downstream node may be satisfied by at least two upstream suppliers. The delivery distance limit is regulated that a distribution center’s distribution radius should be proportional to its capacity. Several important conclusions are drawn through numerical sample tests. First, the proposed method ensures a robust supply chain network with an ability of risk mitigation. Second, a reasonable distribution radius limit in a DC is beneficial for intensive logistics management. Finally, the trade-off between minimal inventory shortage and total supply chain cost should be reached by adjusting penalty weight. © 2017 ICIC International.
Zhang J.,Shandong Jiaotong University
Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011 | Year: 2011
Aceording to the fast imProvement of computer teclmology, automated fingerprint identification system is the main research topic of biometric recognition. However, the Performance of fingerprint identification systems is limited by the quality of fingerprint images which are often influenced by different factors. So it is necessary to improve the fingerprint image quality and to make them fit for the requirement of real applications. Much more attention was Paid to fingerprint image enhancement with orieniation filtering. © 2011 IEEE.
Yang R.,Shandong University |
Yang R.,Shandong Jiaotong University |
Wang Y.,Shandong University
Automatica | Year: 2013
This paper investigates the finite-time stability (FTS) analysis and finite-time H control design for a class of nonlinear time-delay Hamiltonian systems, and proposes some delay-dependent results on both the FTS and finite-time control design. First, a criterion on the FTS is proposed for general time-delay nonlinear systems via the Razumikhin approach. Then, based on the criterion, some delay-independent and delay-dependent conditions on the FTS are derived for the nonlinear time-delay Hamiltonian systems by constructing a suitable Lyapunov function. Third, we use the obtained FTS results to investigate the finite-time H control problem, and present a control design procedure for a class of nonlinear time-delay port-controlled Hamiltonian systems by the energy-shaping approach. Study of two illustrative examples shows that the results obtained in this paper work very well in the FTS analysis and control design of some nonlinear time-delay Hamiltonian systems. © 2012 Elsevier Ltd. All rights reserved.
Zhang G.,Shandong Jiaotong University
Lecture Notes in Electrical Engineering | Year: 2014
Car collision is now the traffic accident with higher incidence and more death. In the process of collision between large trucks and cars, the cars are likely to drill into the trucks in the front or in the back and be compacted on the side due to the high frame of the trucks. What's more, the quality of trucks is much larger than small cars, which will lead to the problem of compatibility. © 2014 Springer-Verlag.
Gao S.,Shandong Jiaotong University
Journal of Modern Optics | Year: 2015
A diode-end-pumped passively Q-switched Nd:YAG laser with a V:YAG saturable absorber emitting at 1319 and 1338 nm was demonstrated for the first time. A maximum output power of 286 mW was obtained with minimum pulse duration of 13.2 ns and the highest repetition rate was 15 kHz under an incident pump power of 7.7 W. The calculated highest peak power and pulse energy were 2.1 kW and 29 J, respectively. © 2015 Taylor & Francis.
Ma X.L.,Shandong Jiaotong University
Applied Mechanics and Materials | Year: 2013
This paper introduces the basic principle of stereolithography technology, characteristics of laser rapid prototyping technology and its application in various fields, the laser rapid prototyping technology has been in the modeling industry, machinery manufacturing, aerospace, military, architecture, film and television, home appliances, light industry, medicine, archaeology, cultural art, sculpture, jewelry and other fields has been widely applied. © (2013) Trans Tech Publications, Switzerland.
Yi L.,Shandong Jiaotong University
Energy Procedia | Year: 2011
Allowing for global warming, low carbonization is the hotels' inevitably choice. Based on investigation conducted among high-star hotels in Ji'nan, this paper calculates the carbon footprint of catering products in these hotels during operation. The conclusions are as following: 1 The carbon footprint of catering products in high-star hotels during operation is mainly generated in the direct source of carbon emissions, accounting for over 99%. 2 All of the carbon emissions from indirect sources correlate to reception scale. However there is a wide gap among them: according to the carbon emissions per unit of catering product from the consumption of electricity among the six hotels, the highest one is 25 times as the lowest one. 3 Among the six hotels, there is a gap on the carbon footprints per unit of catering product, the highest one is 5.56 times as the lowest one.4 The higher rank of hotels and the more characteristics of catering products, the more carbon footprints. © 2011 Published by Elsevier Ltd.
Li W.,Shandong Jiaotong University
Procedia Engineering | Year: 2012
The paper mainly introduced the status and future developing strategy of continuing engineering education (CEE) in China. At first, the paper told about the origin and short history of CEE in China. In the next part, the paper introduced the status of CEE in China such as national policies, folk organizations, forms of research and communication with the international organization. Besides, the paper pointed there are still many shortcomings and difficulties of CEE in China. In the last part, based on the nation's policy and previous research, the paper analyzed the future developing strategy of CEE including continuing to enhance infrastructure and public service, emphasizing on distance education, enhancing the quality of teachers and strengthening co-operation between the university and the enterprise etc. © 2011 Published by Elsevier Ltd.
Shandong Jiaotong University | Date: 2010-04-29
Disclosed is a gasbag type pavement testing apparatus, comprising a main frame (7), roller wheels (1) and a pneumatic suspension frame system which consists of gasbags (2), ventilated bolts (5), spokes (6), an inflating valve (10), a communicating shaft (11) and rockers (3). The gasbags (2), ventilated bolts (5), spokes (6), inflating valve (10), and communicating shaft (11) constitute an air storing space interconnecting each gasbag, the air storing space is inflated or deflated through the inflating valve (10), and the rockers (3) are hinge-jointed with the spokes (6). The spokes (6), rockers (3) and the communicating shaft (11) constitute a spoke assembly. The roller wheels (1) are driven by the spoke assembly to rotate round the communicating shaft (11), the roller wheels (1) contact the pavement in turn under the joint action of the gasbags (2) and the spoke assembly to simulate the practical situation and hence conduct the rolling test for the pavement. The testing apparatus performs the test with higher accuracy and higher efficiency.
Shandong Jiaotong University | Date: 2010-05-31
Disclosed is a floating mechanism loading vehicle provided with double shafts and eight wheels for pavement accelerated loading test. The floating mechanism loading vehicle comprises front and rear rotating shafts (5), on each of which two loading steel wheels (3) and two backhaul steel wheels (2) are mounted, the loading steel wheels (3) being fixed on the rotating shafts (5) and the backhaul steel wheels (2) being rotatable round the rotating shafts (5). During the loading rolling course, the loading steel wheels (3) runs on the loading rail (4), while during the unloading backhaul course, the backhaul steel wheels (2) runs on the backhaul rail (1).