Table of Content

28 March 2013, Volume 47 Issue 03 Previous Issue    Next Issue

Energy and Power Engineering

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Experimental Investigation of Holed-Casing Treatment on Steady and Transient Characteristics in an Industrial Centrifugal Compressor   DING Liang, WANG Tong, GU Chuan-Gang 2013, 47 (03):  335-340.  Abstract ( 2158 )   Save A new method of holed casing treatment was put forward and applied to an industrial centrifugal compressor. A series of experimental investigations were conducted to study the effects of casing treatment on steady and transient performance of the compressor.Dynamic pressure is monitored under stable operating point and surge occurrence condition at the following positions: two ends of the treated holes, 37%-chord impeller tip position and the vaneless diffuser. By use of the casing treatment, the surge margin of the compressor is increased by about 10%Qd with negligible decrease in efficiency. Pulsating pressure change is taken as an indicator for evaluating the flow direction in the hole. Near surge point, when the static pressure of the bleeding port is larger than the turning point, a sudden increase in pulsating pressure indicates that the bleeding flow occurs. Near choke side, when the static pressure of the turning point is larger than the bleeding port, a severe change in pulsating pressure indicates that the bypass flow occurs. The signal analysis of the dynamic pressure at surge occurrence shows that the compressor stalls with a modal inception rather than a spike wave no matter casing treatment is applied or not. The travelling speed of the stall cell found in the compressor with casing treatment is faster than that with solid casing. The occurrence of modal precursor wave is delayed with casing treatment.   References | Related Articles | Metrics

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Simulation Study About the Spray Characteristics of a Stirling Engine by Using Diesel and Dimethyl Ether ZHU Guang-Fei-1, CHEN Xiao-Ling-1, ZHANG Wu-Gao-1, GU Gen-Xiang-2 , HUANG Zhen-1 2013, 47 (03):  341-345.  Abstract ( 2622 )   Save According to the practical spray characteristics of a Stirling engine, the mathematical and physical model was built and solved. By comparing with experiment data, the model was verified and validated. On this base, the spray characteristic of Stirling engine by using ultralow sulfur diesel (ULSD) fuel and dimethyl ether (DME) under cooling condition were simulated and analyzed. The results show that increasing back pressure can improve the spray characteristics although it could restrain the DME atomization. Compared with ULSD, DME provides shorter tip penetration and wider cone angle under the same mass flow rate and back pressure.With the increase of back pressure, the spray cone angle tends to increase whereas high ambient pressure has slight influence on spray cone angle when the back pressure exceeds a certain high value.   References | Related Articles | Metrics

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Experimental Investigation on Off-Design Performance of Small-Size Humid Air Turbine Cycle WEI Chen-Yu, ZANG Shu-Sheng, GE Bing, PU Qiang 2013, 47 (03):  346-351.  Abstract ( 2257 )   Save  An off-design performance test investigation on humid air turbine (HAT) cycle was conducted on a small-size two-shaft gas turbine test rig. The goals of this paper are to study the gas turbine performance improvement in HAT cycle at low parameters. Two different conditions are taken into account for the test investigation: in Case I, the fuel flow was kept constant while in Case II the turbine inlet temperature was kept constant. In Case I, when the air humidity ratio was increased, the power output was increased, and at the same time, the turbine inlet temperature (TIT) and the NOx emission were reduced. In Case II, when the air humidity ratio was increased, the power output could be enormously increased.Based on the gas turbine parts characteristics and test conditions, the off-design performance of HAT cycle was calculated and the results show that the HAT cycle performs better than twoshaft cycle in terms of the specific work and the efficiency, and the effect is more obvious along with the increase of air humidity ratio. Increasing humidity ratio can also enlarge surge margin on compressor curves at the same inlet air flow, turbine inlet temperature and power output. Key words： References | Related Articles | Metrics

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Permeability, Thermal Conductivity and the Pore Characters of Sintered Porous Metal Materials REN Xiao-Jun-1, ZHANG Peng-1, WANG Xiao-Jun-2, PAN Yan-Pin-2 2013, 47 (03):  352-357.  Abstract ( 3252 )   Save In order to characterize the sintered porous metal materials, porosity was tested.  Surface porosity, average pore size and pore size distribution were obtained through image processing and analysis based on scanning electron microscope(SEM) images of nature fracture surfaces. Permeability and air permeability were measured by experimental apparatus based on Darcy’s law, and the effects of original power grain size, porosity, thickness, low temperature condition, average pore size and pore size distribution on permeability were also discussed. Effective thermal conductivities were measured by a hot disk thermal constant analyzer and compared with predicted results from empirical equations. The results demonstrate that volume average pore size and pore size distribution can effectively reflect the change of air permeability, and thickness has an important influence on porosity and permeability. A stronger wall effect is presented in the case of a thinner thickness and a bigger original power grain size. Low temperature condition has no influence on permeability. References | Related Articles | Metrics

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Numerical and Experimental Investigation of Unsteady Flows aboutRotor-Stator Interaction for Stator Lean Effects LIU Hai-Jian-a, 欧Yang-Hua-a , WU Ya-Dong-b, TIAN Jie-a, DU Chao-Hui-a 2013, 47 (03):  358-363.  Abstract ( 2387 )   Save Three stators with different lean angle were employed for numerical study to obtain the rotor’s wake evolution, and to get the RMS pressure and ΔCp at stators’ surface. At the experiment part, the noise spectra were measured to compare with numerical study. The results indicate that the wakes of rotor interaction with stator is the main source of noise, and the stator with different lean angle can change the phase of rotor’s wake, the first harmonic of tone noise is the reason for difference of the total sound pressure level (SPL).   References | Related Articles | Metrics

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Numerical Simulation of Ash Deposit of Typical Coal in Pulverized Coal-Fired Boiler WANG Zhen, HU Li-Yuan, LUO Yong-Hao, WANG Yuan 2013, 47 (03):  364-369.  Abstract ( 3058 )   Save A numerical model coupled with comprehensive combustion code to predict ash deposition in a coal-fired boiler was developed. The results show serious slagging is mainly at 20-25 meter height of the front wall, because of the more rapid gas flow and higher temperature, and burning Shenmu coal will result in more slagging than Zibo coal. The predictions indicate slagging can be alleviated by proper operating conditions and using low slagging-tendency coals.   References | Related Articles | Metrics

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Effect of Refrigerant Charge on the Performance of a Direct Expansion Solar Assisted Heat Pump Water Heater Using R410A KONG Xiang-Qiang-1, LIN Lin-1, LI Ying-1, ZHANG Dong-2, YANG Qian-Ming-1 2013, 47 (03):  370-375.  Abstract ( 2774 )   Save Based on the distributed parameter and homogeneous flow models of solar collector/evaporator and condenser, the lumped parameter models of compressor and electronic expansion valve and the refrigerant charge model, a simulation program of a direct expansion solar assisted heat pump water heater (DXSAHPWH) system using R410A was coded. For a fixed superheat degree at the collector outlet, the thermal performance parameters of the DX-SAHPWH system were obtained under different refrigerant charge conditions, and the effects of changing the refrigerant charge on the thermal performance of the system were analyzed. The results show that as the refrigerant charge increases, the evaporating pressure and heating time of the system decrease, but the instantaneous power of the compressor and the thermal efficiency of the collector increase. What’s more, the influences of the refrigerant charge on the condensing pressure and coefficient of performance (COP) of the system are very small.   References | Related Articles | Metrics

Engergy and Power Engineering

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A Criterion Based on Computational Singular Perturbation for the Construction of Reduced Mechanism for Dimethyl Ether WU Zuo-Zhu, QIAO Xin-Qi, HUANG Zhen 2013, 47 (03):  376-380.  Abstract ( 2620 )   Save  A criterion based on computational singular perturbation (CSP) was proposed to determine the number of quasi-steady state (QSS) species. Together with CSP, it was applied to the reduction of dimethyl ether (DME) involving 55 species and 290 reactions leading to the development of a 26-species reduced mechanism with 20 lumped steps. A software package named I-CSP was developed to make the reduction process more efficient. Input to the I-CSP includes (i) the detailed mechanism, (ii) the numerical solution of the problem for a specific set of operating conditions, (iii) the number of quasi steady state (QSS) species. The resulting reduced mechanism was validated both in homogenous reactor, including auto-ignition and PSR, over a wide range of pressure and equivalence ratio, and in a steady, one-dimensional, burner-stabilized freely propagating premixed laminar flame. Comparison of the results calculated with the detailed and the reduced mechanisms shows excellent agreements in homogenous reactor, but discrepancies can be observed in the premixed laminar flame. References | Related Articles | Metrics

Energy and Power Engineering

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Dynamic Modeling and Critical Speed Calculation of Gas Turbine Rod Fastening Rotor WANG Shao-Bo, MENG Cheng, SU Ming 2013, 47 (03):  381-384.  Abstract ( 3564 )   Save Rod fastening rotor is usually used in heavy duty gas turbine rotor-support system, of which critical speed calculation differs from that of the integral rotor. In the framework of Riccati transfer matrix method, discretization of central tie-rod fastening rotor structure with detailed analysis was conducted. Taking into account the impacts which are brought by bearing support and meshing face tooth on dynamic characteristics of rotor system, a computation model of rotor-support system was further established. In this way, critical speeds and the corresponding modes were obtained.The calculated result shows a good agreement with the test measurement result, which implies that the method is accurate and computation model  is reliable. This approach can also be applied to analyze dynamic characteristics of rotors with homogenous structure.   References | Related Articles | Metrics

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Numerical Model of Heat and Mass Transfer for Tube-Finned Heat Exchangers under Dehumidifying Conditions   HAN Wei-Zhe, DING Guo-Liang, HU Hai-Tao, ZHUANG Da-Wei 2013, 47 (03):  385-391.  Abstract ( 2205 )   Save Dehumidifying process is very common in the evaporating conditions of finned tube heat exchangers, which has tremendous effect on the performance of heat exchangers. In order to make the simulation closer to the heat and mass transfer mechanisms, a numerical model of heat and mass transfer on air side was established. Not only is the mass transfer produced by the concentration difference between water vapor and liquid considered in this model but also the simulation of direct water vapor condensation is added by means of classical nucleation theory. The comparison between the numerical model and experimental data shows that the numerical model has good accuracy. The relative errors for jh factor and jm factor are 6.93% and 12.1% respectively. The numerical simulation shows that the relative humidity only affects the mass transfer characteristics under partial wet conditions.   References | Related Articles | Metrics

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Aerodynamic Investigation of Wind Turbine During Pitching Motion SHEN Xin, YU Guo-Hua, ZHU Xiao-Cheng, DU Chao-Hui 2013, 47 (03):  392-397.  Abstract ( 2378 )   Save A vortex lattice method was used for the blade model for the unsteady aerodynamic prediction of wind turbine during pitching motion. In order to present the change of the shape and vorticity of the wake, a time marching free wake model was used to calculate the wake trailed for the tip of the blade. The results of the test cases were compared with the experimental data available from the NREL PHASE VI rotor experiments, indicating that the model not only corrects power levels, but also predates the transient overshoots and undershoots of the rotor during pitching motion accurately.   References | Related Articles | Metrics

Others

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Optimization of Warship Spare Parts in the Scenario of Wartime Mission WANG Rui-1, LEI Hong-Wei-1, PENG Ying-Wu-2, LI Qing-Min-2, QI Yong-Qiang-1 2013, 47 (03):  398-403.  Abstract ( 2896 )   Save Warship equipment is always supported by three-echelon spare parts maintenance support and four-echelon spare parts supply support system in wartime. Inventory is an important factor to brigade sustainability. Combat mission and spare parts support system was analyzed. By extending dynamic Palm theorem, probability distribution of SRU in repair can be computed. Dynamic mission, failure, combat damage, condemnations and procurement were considered and brigade mission success evaluation model by spare parts maintenance and supply support in wartime was established. Stock cost was taken as the optimization object and brigade mission success was used as the restriction. Spare parts optimization model based on brigade mission success was established. The spare parts optimization concept was provided based on margin analysis method. Finally, it was illuminated that the model would provide decision-making for equipment support units in designing support concept.   References | Related Articles | Metrics

General Industrial Technology

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Study on Seasonal Energy Efficiency Ratio and Potential Temperature of  Variable-Speed Room Air Conditioner Based on Running Time TIAN Zhen, GU Bo 2013, 47 (03):  404-407.  Abstract ( 2402 )   Save Seasonal energy efficiency ratio (SEER) of three variablespeed air conditioners under three kinds of running time was analyzed, respectively. Running time frequency (RTF) was taken to characterize the distribution of running time on temperature intervals. Bar graph was used to show the distribution of cooling load and energy consumption on temperature intervals. The results show that, the smaller the temperature under maximum RTF, the higher the SEER is. The faster the accumulation speed of RTF on low temperature intervals, the higher the SEER is. The regularity of distribution of cooling load and energy consumption on temperature intervals is decided by running time. The potential temperature can be showed on the bar graph, which has high reference value in performance optimization and selection of variable-speed room air conditioner.   References | Related Articles | Metrics

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Acoustic Performance of Sound Absorption Coating Containing Composite Cavities TAO Meng-1, ZHUO Lin-Kai-2 2013, 47 (03):  408-412.  Abstract ( 3056 )   Save Using the waveguide finite element method, the propagation and the attenuation curves of the axial wave in the sound absorption coating which contains periodic composite cavities were obtained. Besides, the analytical approach of the acoustic performance of sound absorption coating was given together using the transfer matrix. Taking the sound absorption coating which contains periodic conical cavities as an example, the effect of cavity size on the acoustic performance was discussed both by the wave-mode transformation phenomenon and by the axial wave propagating characteristics respectively. The  erical results show that the peak absorption coefficient is shifted to the lower frequency as the proportion of bigger cavities in the composite coating increases.   References | Related Articles | Metrics

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Numerical Model for Micro-channel Parallel Flow Evaporator LIANG Yuan-Yuan, ZHAO Yu, CHEN Jiang-Ping 2013, 47 (03):  413-416.  Abstract ( 3460 )   Save A distributed parameter model for the micro-channel parallel flow evaporator was developed. Elements are divided into dry condition and wet condition, and the ε-NTU (efficiency-number of transfer units) method is used to calculate the heat transfer rate. Different two-phase heat transfer correlations were compared and the model was verified by experiment. The results show that the model using Kandlikar’s correlation obtains the highest precision, the calculated mean deviation is 3.64%. The model can predict airside and refrigerant side pressure drop within ±10% and ±15% respectively. The model is an effective analytical method for the parallel flow evaporator development. References | Related Articles | Metrics

Communication and Transportation

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Index System and Prosperity Indices of Global Shipping Industry and Applied Research NING Xiao-Lin-1, ZHAO Yi-Fei-2, CHEN Fei-儿1 2013, 47 (03):  417-422.  Abstract ( 2608 )   Save In order to better measure and evaluate the conditions of the international shipping market and its development trend, this paper, taking into consideration the volume and value level and other factors of the global shipping industry, simulated the structure of AHP and established the index system of global shipping prosperity; using the time difference correlation analysis, cluster analysis, etc., classified these indicators into three categories of the preceding, the simultaneous and the lagging indicators; learned the theory of the economic monitoring, and established the diffusion indices and composite indices of global shipping prosperity by using the method of factor analysis; collected the statistics of the global maritime economy in recent five years as a study sample, illustrated global shipping prosperity indices and the results, and comprehensively and objectively assessed the dynamic process of the global shipping industry prosperity.   References | Related Articles | Metrics

Others

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Application and Comparison of the Different Turbulent  Models Simulation for Non-Contact Vortex Gripper WU Qiong, YE Qian, MENG Guo-Xiang 2013, 47 (03):  423-427.  Abstract ( 2122 )   Save Standard k-ε turbulent model, RNG k-ε turbulent model and RSM turbulent model were used to simulate for non-contact vortex gripper. Through the simulation calculation, the pressure distribution, lifting force and flow rate characteristics of the three turbulent models were obtained respectively. Comparing the three turbulent models’ result with experimental result, RSM turbulent model is the most reasonable. RNG k-ε turbulence model forecast results take second place and in the engineering application the error of this model is acceptable. Standard k-ε turbulence model forecast result is the worst. RSM turbulent model and RNG k-ε turbulent model could be used as theoretical basis of the product upgrades.   References | Related Articles | Metrics

Electrotechnology

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Reliability Simulation of Remote Power Feeding System WANG Xi-Chen-1, ZHOU Xue-Jun-1, HU Ran-2, FAN Cheng-1, MIAO Hui-1 2013, 47 (03):  428-433.  Abstract ( 2948 )   Save The remote power feeding system is one of the core technologies of the deep seafloor observatory network, it is necessary to analyze the reliability of this system. An equivalent circuit model which includes the values for long distance submarine cable resistance, inductance and capacitance was established, five different failures of the power feeding system were summed up, and the data comes from professional simulation software. The results show that the system can work stably to keep the characters of series connection and constant current. It is proved that this system has high reliability and can be used in the deep seafloor observatory network.   References | Related Articles | Metrics

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Design and Simulation Research on Double-Staggered Arranged Porous Nozzle HUANG Kang, 欧Yang-Guang-Yao , AN Shi-Jie, CHANG Han-Bao 2013, 47 (03):  434-437.  Abstract ( 2296 )   Save For the serious phenomenon of the traditional nozzle spray run into a wall and the spray interference of general porous nozzle under high injection pressure, this paper designed a staggered arranged porous nozzle with upper and lower layers, clarified the structure and theoretical basis of the doublestaggered arranged porous nozzle, established the spray and combustion models to study the spray characteristics of the doublestaggered arranged porous nozzle and the influence of its structural parameters on combustion and emissions performance of the common rail diesel engine. The spray simulation shows that the doublestaggered arranged porous nozzle has a shorter injection distance and better spatial distribution of fuel properties compared with conventional nozzle. The influence of structural parameters of doublestaggered arranged porous nozzle on common rail diesel engine combustion and emission performance shows that the upper nozzle spray angle using a large one or under nozzle using a small diameter, can make the diesel combustion and emissions performance further improved. References | Related Articles | Metrics

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Optimal Reinsurance-Investment Strategies in a Mean-Reverting Market WANG Lei, GU Meng-Di 2013, 47 (03):  438-443.  Abstract ( 2580 )   Save In a mean-reverting market, how to arrange reinsurance and investment proportions is a practical problem faced by general insurers. Assuming that the price of the risky asset is simulated by the exponential OrnsteinUhlenbeck process and the claim process follows a Brownian motion with drift, the optimal proportional reinsurance and investment decisions for insurers with power utility or exponential utility function were studied by stochastic control. A numerical simulation was presented to illustrate the relationship between the speed of mean-reversion and the optimal investment strategy. The results indicate that in a meanreverting market, the optimal strategy depends on not only time and wealth but also the extent of the spot price of the risky asset deviating from the mean value. The predictability of prices requires decision makers to judge the market stage and decide investment strategy in the light of market trend. Key words： References | Related Articles | Metrics

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An Empirical Research on the Relationship among Knowledge Management, Knowledge Competence and Core Competence HONG Jiang-Tao-1, YANG Xiao-Yan-1, CHEN Jun-Fang-2 2013, 47 (03):  444-449.  Abstract ( 2217 )   Save This paper targets the current six leading domestic IT manufacturing companies. It uses structural equation model to analyze the relationship among knowledge management, knowledge competence and core competence in their different business activities. The research results are as follows. Knowledge management has a positive direct effect on knowledge competence. Knowledge competence has a positive direct effect on core competence. Knowledge management has a positive direct effect on core competence. However, it has an indirect effect on core competence by way of knowledge competence. Knowledge competence is a medium between knowledge management and core competence. Conclusions of this paper can provide some theoretical guidance for the increase of Chinese IT industry’ s international competitiveness based on knowledge. References | Related Articles | Metrics

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Real-Time Optimization Strategy of the Multi-Period Dynamic Vehicle Routing Problems XIONG Hao, YAN Hui-Li, ZHOU He-Ping, LIU Wu-Sheng 2013, 47 (03):  450-453.  Abstract ( 2775 )   Save The multi-period dynamic vehicle routing problem(MPDVRP) belongs to the emerging problem of dynamic vehicle routing problem, which can be divided into single decision-making problem and multi-decision-making problem. Average distance strategy and cutting-and-batch TSP strategy were constructed for these two types of problems. The average distance strategy gives priority to customers those cannot be delayed, and then selects the customers those can be delayed according to the average path distance. In cutting-and-batch TSP strategy, the customers will be delayed or refused only in the last decision according to decision-making time limit. Simulations of the two strategies were carried out, and the numerical results show that the two strategies are both better than the existing strategies. References | Related Articles | Metrics

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Analysis on Supply Emergency Management Based on Dual-Source ZHANG Wen-Jie-1, 2 , LUO Jian-Wen-2 2013, 47 (03):  454-458.  Abstract ( 2417 )   Save The problem about manufacturer’s supply emergency management strategy under emergencies was studied. Based on single-source, the effects of two different strategies including risky dual-source and mixed dual-source on responding to supply disruption risk were analyzed. The optimal ordering decision and expected profit of the manufacturer in two different procurement strategies were compared, and the factors that have the impact on the manufacturer’s choice of emergency strategy were analyzed. Finally, some numerical examples were used to demonstrate the impact of supply disruption probability on the procurement decision and expected profit of the manufacturer. It is shown that dual-source strategy is better than single-source in the prevention of the risk of supply disruptions. The total ordered quantity by the manufacturer in mixed dual-source is equal to that of single-source, but less than that of risky dualsource. In the case of mixed dual-source strategy, the manufacturer will increase the use of reliable supplier as the disruption probability increases, even though bear a higher purchase cost.   References | Related Articles | Metrics

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The Volume Weighted Average Price Strategy Based on Instantaneous Volume and Return Adjusted Dynamically ZHOU Ren-Cai-1, CHEN Xiao-Wen-2 2013, 47 (03):  459-464.  Abstract ( 2705 )   Save After summarizing the feature about volume weighted average price(VWAP) algorithm, this article proposed a new VWAP strategy. The intraday volume share is decomposed into market part and specific part. The dynamics of specific part is described by volume-return vector autoregression(VAR) model. The result of empirical study shows that the VWAP-VAR strategy presented in this article can reduce the track error and execution risk in VWAP order, and its performance is better than that of the classical VWAP strategy and VWAP-ARMA strategy.   References | Related Articles | Metrics

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Portfolio Optimization with Liability under the Vasicek Model CHANG Hao-1, 2 , RONG Xi-Min-3 2013, 47 (03):  465-471.  Abstract ( 2292 )   Save This paper is concerned with a portfolio optimization problem with liability and stochastic interest rate model, where risk-free interest rate is assumed to follow the Vasicek interest rate model, while liability process follows Brownian motion with drift. Moreover, it was assumed that liability dynamic is correlated with stock price and interest rate. Dynamic programming principle was applied to obtain Hamilton-Jacobi-Bellman(HJB) equation for the value function and further Legendre transform was used to derive its dual equation. Power utility and exponential utility function were chosen for the analysis. Finally, the closed-form solutions to the optimal investment strategies were obtained by using separate variable and variable change technique and numerical examples were presented to illustrate the impact of market parameters on the optimal policies.   References | Related Articles | Metrics

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Number-Coded Grouping Genetic Algorithm for  Solving Grouping Problem: Design and Application CHEN Yao-1, 2 , HUO Jia-Zhen-3 2013, 47 (03):  472-478.  Abstract ( 2177 )   Save Grouping problem exists widely in management, it is hard to solve because of its strong NP-Hard. This paper proposed number-coded grouping genetic algorithm, a new solution to supply logistics optimization problem with constraints and nonlinear objective function. Several grouping-based operators were designed to realize the grouping evolution, such as two-point grouping crossover and heuristic grouping mutation. It was applied to a real-world numerical case in transportation consolidation, which shows the performance of the algorithm. References | Related Articles | Metrics

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Effect of Sampling on Growth Mechanisms of Complex Networks YANG Bo, CHEN Ying 2013, 47 (03):  479-483.  Abstract ( 2332 )   Save The problem of whether the topological structure of network can be kept well when data is collected incompletely is concerned. The current focus on the effect of sampling on macro statistical properties has been extended to consideration of its effect on micro network mechanisms. A mechanism-inferring method of networks exploited from machine learning theory was used to identify the mechanisms of sampled networks obtained by different sampling methods. The results were compared with the original networks to analyze the impact of sampling on network mechanisms. It is found that different sampling methods have a nontrivial influence on growth mechanisms of networks. In conclusion, the hub-chain sampling strategy can keep mechanisms better than others. Meanwhile, hub sampling and chain sampling have more remarkable influences on network mechanisms than their effects on structural properties. In addition, there are some differences in the effects of sampling for different types of networks, which means in practice we should select suitable sampling method according to the research object of network to improve the accuracy of network building more effectively. References | Related Articles | Metrics

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Study on Supply Chain Robustness Index Mode Considering Profits and Risks LI Bin-a, JI Jian-Hua-a, b , LI Guo-Wei-a 2013, 47 (03):  484-488.  Abstract ( 2238 )   Save Standing on the overall interests of the enterprise, this paper designed a systematical quantification approach of supply chain robustness index considering the profits and risks synthetically. The paper built a compositive supply chain robustness index considering supply chain connectivity, profits and service level, to guide the enterprises’ supply chain design, evaluation and management. This paper also studied the robustness of multi-sourcing, strategic stocks and emergency option mode, and proved the usefulness of the approach through numerical examples. References | Related Articles | Metrics

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Study on Financing Supply Chain Coordination Based on Strategic Customer   ZHOU Jian-Heng-1, GAO Jie-2, GUAN Xian-Jun-3 2013, 47 (03):  489-494.  Abstract ( 2270 )   Save By introducing the strategic customer’s behavior into the financing supply chain, this paper studied its impact on the financial and operation decisions. In a financing supply chain where customers anticipate future sales and choose purchase timing to maximize their expected surplus, based on the customers’ rational behavior, the bank and supplier make their decision on financial ratio and produce quantity. This paper extends the base model by taking the 3PL and retailer into account. Based on the analysis，we find that with the screening of 3PL and the decentralized supply chain of retailer, we can achieve more optimal performance than centralized supply chain. The supplier and retailer are both better off. Key words： References | Related Articles | Metrics

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Research on the Location-Allocation System with Constraints  Based on Covering Location Problem BI Ya-1, LI Wen-Feng-2 2013, 47 (03):  495-499.  Abstract ( 2861 )   Save The design of location-allocation model with time and capacity constraints was aimed to the optimal location-allocation and the lowest cost of supply chain. The non-linear programming model for location-allocation system was constructed with certain assumptions as premises. A heuristic algorithm for the model was designed according to the specific structure of the model’s decision-making space. Finally, the numerical calculation was performed in the model to solve an arithmetic problem in practical investigation. The results show that the decision model is practical and the algorithm is valid.   References | Related Articles | Metrics

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Cost Allocation Schemes for Transportation Alliance Based on Farsighted Stability ZHENG Shi-Yuan 2013, 47 (03):  500-504.  Abstract ( 2151 )   Save Based on the transportation cooperative game model, this paper discussed the cost allocation schemes under Shapley value and PES. The properties of these two cost allocation schemes and their affections to the farsighted stability of transportation alliance were analyzed. The studies indicate that carrier’s Shapley value is positively correlated with his demand, and negatively correlated with his production volume; carrier’s PES is positively correlated with his demand, while negatively correlated with other carriers’ production volumes; the increasing cost of the whole transportation alliance is almost sustained by the carrier himself when his demand and production volume are increased in the same scale simultaneously; “differential alliance” is more stable with Shapley value being cost allocation scheme, while “alliance between giants” is more stable with PES being cost allocation scheme.   References | Related Articles | Metrics