中国科学院数学与系统科学研究院期刊网

Systems Engineering - Theory & Practice 2009 Vol.29

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Systems Engineering - Theory & Practice    2009, 29 (1): 1-5.   DOI: 10.12011/1000-6788(2009)1-1
Abstract1629)      PDF(pc) (410KB)(1016)       Save

Early order commitment is one of the strategies for supply chain coordination, wherein a retailer commits to purchase a fixed-order quantity and delivery time from a supplier before the real delivery occurs. In this paper, an analytical model is developed for a supply chain with one supplier and multiple
retailers, where the manufacturer uses a wholesale price discount scheme based on retailers' early order commitment periods to induce the retailers to commitment their orders in advance. This model can be used to determine the optimal early commitment periods for the retailers, and to determine the optimal discount scheme for the supplier.

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Systems Engineering - Theory & Practice    2009, 29 (1): 6-12.   DOI: 10.12011/1000-6788(2009)1-6
Abstract1770)      PDF(pc) (557KB)(912)       Save
In order to research on the relationship between stock index futures hedge ratio and hedging horizon, the multi-scale hedge ratio formula was inferred based on wavelet analysis. The formula revealed that the optimal hedge ratio varies over various hedge horizons due to the multi-scale characteristics of volatility and correlation between index futures and spots. Empirical analysis
was studied using the international index futures data. The empirical results suggested that the correlation and volatility ratio between index futures and spots vary over various time scales. The differences between the volatility of index spots and futures in the high frequent scales are larger than the differences in the low frequent scale, but the correlations are smaller than the correlations in the low frequent scales. Further study has suggested that the hedge ratio and hedge effectiveness vary as the variance of correlation and volatility ratio between futures and spots over various time scales.
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Systems Engineering - Theory & Practice    2009, 29 (1): 13-21.   DOI: 10.12011/1000-6788(2009)1-13
Abstract2593)      PDF(pc) (704KB)(836)       Save
Evaluating fund performance in data envelopment analysis is more comprehensive than in traditional single-factor or multi-factor models. An improved DEA model is proposed in this paper based on performance characteristics of equity funds in China, which is called PCPC (preferrable category partly control) model, serving as an assessing tool for equity mutual funds. In this paper,definition and dual form are provided. In succession, not only detailed illustration for PCPC model's property, but also predigestion is given. Furthermore, we enumerate PCPC model's analysis avenue and apply it into equity mutual funds evaluation in China.
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Systems Engineering - Theory & Practice    2009, 29 (1): 22-28.   DOI: 10.12011/1000-6788(2009)1-22
Abstract1632)      PDF(pc) (566KB)(928)       Save
This paper uses VaR as a replacement of variance to measure risk and investigates a portfolio selection problem with different borrowing-lending rates. We consider a general utility function that is a function of only the mean and the VaR of portfolio return and establish a corresponding utility maximization model.Utilizing properties of the efficient frontier of the mean-VaR model, we obtain existence conditions and characterizations of the optimal solutions to the utility maximization model. Further we give a solution method and a numerical algorithm for the optional solution. Finally, as an application and a demonstration of our results, we give a numerical example using the real data of Chinese stock market.
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Systems Engineering - Theory & Practice    2009, 29 (1): 29-36.   DOI: 10.12011/1000-6788(2009)1-29
Abstract1292)      PDF(pc) (463KB)(748)       Save
The forms of representative's utility function and the dynamics of price of endowment are two basic aspects in equilibrium pricing.It will lead to non-robust conclusion if either of these aspects in not considered completkly. Give the explicit formulas for the equilibrium price of the zero coupon bond when the representative's utility shows linear risk tolerance under the linear jump diffusion processes, incorporating both the diversities of the forms of utility functions and the dynamics of price of endowment. The conditions are solved for the constant yield to maturity for the zero coupon bond. And the equilibrium conditions are also found for the endowment.
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Systems Engineering - Theory & Practice    2009, 29 (1): 37-43.   DOI: 10.12011/1000-6788(2009)1-37
Abstract1650)      PDF(pc) (587KB)(838)       Save
Assume that generators 1 and 2 have asymmetric strategies in a duopolistic bidding. Generator 2 adjusts its current strategy according to marginal profit of the last period; Generator 1 selects optimal strategy so as to maximize its objective during a given time period subjected to a dynamic constraint from generator 2's strategy. This paper uses optimal control to analyze the effect of cost and demand on generator 1's excessive profit. The main result is that, if the marginal cost increases very fast and the market demand is very elastic, then equilibrium strategy in the steady state converges to the static Cournot case. This implies that, the player with dominant information cannot improve
its profit significantly.
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Systems Engineering - Theory & Practice    2009, 29 (1): 44-54.   DOI: 10.12011/1000-6788(2009)1-44
Abstract1518)      PDF(pc) (1188KB)(818)       Save
A good double electricity auction mechanism should control market power and enhance the economic welfare of the electricity market.In order to achieve this aim, the paper designs a new double auction mechanism in electricity market, using the idea of the Vickery-Clark-Groves mechanism. In the new mechanism the market participants can gain some transfer payments based on their
contributions to the market welfare, and the new mechanism can balance the budget of the market organizer. Then makes a theoretical analysis and gives a demonstration from the Spanish electricity market, and the results show that comparing with the MCP mechanism, the new one can reduce the bids of some generation companies with market power in faith, and enhance the economic welfare of the electricity market.
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Systems Engineering - Theory & Practice    2009, 29 (1): 55-63.   DOI: 10.12011/1000-6788(2009)1-55
Abstract1387)      PDF(pc) (949KB)(899)       Save
In this paper, to study the production capacity expansion decision under uncertain marketing environment, the multi-period capacity planning models are built based on scenario analysis.There are two kinds of models considered: In the predictive model,the capacity investment plan doesn't change with the realistic scenarios of the stochastic market. In another one, the adaptive model, decision maker can change his investment project according to the realistic marketing scenarios. Numerical study demonstrates
the decision results of these models. Furthermore, the decision risk of investment is discussed by a predictive capacity planning model that integrates the expected revenue risk. Using the downside risk analysis method, the model considers a constraint based on the expected downside risk, which represents the decision maker's risk preference. The decision difference between the model with risk and the model without risk is explored by numerical study.
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Systems Engineering - Theory & Practice    2009, 29 (1): 64-72.   DOI: 10.12011/1000-6788(2009)1-64
Abstract1411)      PDF(pc) (1399KB)(880)       Save
Based on the research of medium and small-sized enterprises' life cycle, plus the data and the information that acquired from cancelled medium and small-sized enterprises in Shenzhen,Guangzhou, Changsha, Zhengzhou, Chengdu five metropolises during 2000-2007 period, this paper evaluated and comparatively analyzed the relation between the life cycle of small and medium-sized enterprises(SMEs) in the five metropolises and the external
environment that SMEs sit in, revealed the relation and the internal mechanism of SMEs and their external environmental situation. Further more, the countermeasures how to prolong the life cycle of SMEs in our country is proposed from perspective both of government and corporation.
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Systems Engineering - Theory & Practice    2009, 29 (1): 73-80.   DOI: 10.12011/1000-6788(2009)1-73
Abstract1468)      PDF(pc) (687KB)(897)       Save
The key of the early warning system of unemployment is the unemployment rate forecasting.The high precision forecasting to the unemployment rate could offer lots of valuable information for the government policies making.In this paper,19 indices that affect the unemployment rate were chosen,and a new forecasting method based on the kernel principal component analysis and the weighted support vector machine was proposed.Further more,the
detailed forecasting steps were also given,and then the new method was applied to the urban registered unemployment rate forecasting in Fujian province.The research results indicate that the precision of fitting and forecasting are very high, and all the relative errors are less than 1{\%}.This is because the new forecasting method considers the correlativity between the indices and the different importance of the samples in different
periods,and simplifies the index system by dimension reduction.The results show that,the new method on the basis of the kernel principal component analysis and the weighted support vector machine is feasible and valid to forecast the unemployment rate,and it also can be generalized to the forecasting of other domain.
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Systems Engineering - Theory & Practice    2009, 29 (1): 81-88.   DOI: 10.12011/1000-6788(2009)1-81
Abstract1488)      PDF(pc) (529KB)(819)       Save
Material requirements planning research has typically assumed that the firm's demands are determined prior to order planning. In contrast, a class of capacitated lot sizing problems is considered, which implicitly decides, through pricing decisions,the demand levels the firm should satisfy in order to maximize contribution to profit. An algorithm based on dynamic programming
is proposed, by which the optimal pricing strategy and the optimal order strategy are obtained in polynomial time. The results show that the algorithm can effectively solve the original problem.Also, in comparison with the decentralized policy, the more rational prices can be set so as to maximize the form's profit by the joint policy. Sensitivity analysis of order capacity shows the effect of capacity on profit and pricing, by which the proper order capacity level can be set. Sensitivity analysis of life perishability shows the remarkable effect of life perishbility on order strategy.
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Systems Engineering - Theory & Practice    2009, 29 (1): 89-96.   DOI: 10.12011/1000-6788(2009)1-89
Abstract1538)      PDF(pc) (703KB)(861)       Save
The paper applied the Partial Least Squares (PLS) approach to
multi-evaluate the performance of public sectors. First, the PLS
approach was reviewed, the PLS modeling process was interpreted and distinguished with Ordinary Least Square(OLS) on performance assessment of public sectors. Second, the PLS method was utilized to analyze public sector performance evaluated by four different bodies in Shanghai as an example, through analysis it was found that the different evaluated sector had one accord with the weighted order of different evaluation index from the four evaluators, the weighted order from larger to smaller was government openness, the management efficiency, executive fairness, fulfilled responsibility, incorruptibly honest, and the service attitude. Meanwhile, in the midst of the four evaluators,there were different contributions from integrated index of every sectors, the influenced via more to less was followed by the superior evaluator, parallel evaluator, professional evaluator and public evaluator. Finally, it was testified that the PLS was suitable method to multi-evaluate public sectors. These conclusions were meaningful upon researching and conducting performance multi-evaluation to public sectors.
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Systems Engineering - Theory & Practice    2009, 29 (1): 97-103.   DOI: 10.12011/1000-6788(2009)1-97
Abstract1399)      PDF(pc) (492KB)(696)       Save
This paper is focused on the mask effects between diagnosis of outliers and of response transformation in regression analysis. Based on the idea of variable selection, a simultaneous diagnosis method is proposed by constructing covariates and employing the genaralized information criterion.
The efficiency of the proposed approach is compared with naive methods through a Monte Carlo simulation and two examples.
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Systems Engineering - Theory & Practice    2009, 29 (1): 104-110.   DOI: 10.12011/1000-6788(2009)1-104
Abstract1572)      PDF(pc) (408KB)(785)       Save
We first analyze the rationality of the existing definitions on the satisfactory
consistency of a linguistic judgement matrix, give a notion of the satisfactory consistency index and present a method to compute the index. Using the method, we can measure the satisfactory consistency of the linguistic judgement matrix, find out all the teams of the judgment elements that are illegitimate in the linguistic judgement matrix, and then, we solve the problem that there is no judgement method for the satisfactory consistency of a linguistic judgement matrix with non-strict pairwise comparison information. Finally, we illustrate the validity and potential practicality of this method with two examples.

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Systems Engineering - Theory & Practice    2009, 29 (1): 111-117.   DOI: 10.12011/1000-6788(2009)1-111
Abstract1171)      PDF(pc) (479KB)(743)       Save
A new class of assignment problem is proposed in this paper, which roots in the optimization management of slabs in steel industry.Comparing with the generalized assignment problem, flow constraints should be considered in this problem besides the capacity constraints when assign items to knapsacks. This problem could be reduced to the generalized assignment problem, and so is NP-hard. For this problem, a heuristic with oscillation strategy and long-term memory list is proposed to solve it. The oscillation strategy makes it possible that the local search oscillates between the feasible and unfeasible solution spaces in order to find better feasible solutions. Long-term memory list is embedded to encourage the diverse moves of items, which helps to improve
the scattered search ability of the algorithm. In order to testify the efficiency of the heuristic, 23 instances have been randomly generated for the computational experiments. The results show that: for small size problems, the maximum deviation of the heuristic from the optimal solution is 0.55{\%}; for larger size problems, the heuristic could find good solutions in very short time.
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Systems Engineering - Theory & Practice    2009, 29 (1): 118-123.   DOI: 10.12011/1000-6788(2009)1-118
Abstract1530)      PDF(pc) (437KB)(798)       Save
Considering such a fact that the traffic demand freshly entering a network doesn't have perfect information about traffic condition and may then choose routes randomly, we present an improved network traffic flow evolution model in this paper. The model's properties and fixed points are investigated. The fixed points of the model, which are different from traditional user equilibrium state or part user equilibrium state, can better formulate the result of traffic flow assignment in realization.Simulation results obtained from a grid network show that the model can be used to approximately model the process of realizing user equilibrium state, the network flow can in deed evolve to one or more fixed points and the initial values of all available path flows can be zero.
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Systems Engineering - Theory & Practice    2009, 29 (1): 124-130.   DOI: 10.12011/1000-6788(2009)1-124
Abstract1472)      PDF(pc) (447KB)(1300)       Save
Based on grey system theory, the decision-making problem is discussed, in which the attribute values are interval grey numbers and the maximum probability of the value of grey number is known. Firstly, three-parameter interval grey number is defined,and the method of three parameters grey interval incidence degree is presented by using the characteristic of this kind of grey number and the advantage of classical grey incidence decision-making. Secondly, considering the proximity and comparability of space position and geometry shape among every scheme's effect evaluation vector, ideal project and critical project, we construct the three-parameter grey interval slope
incidence coefficient formula. Integrated with the above three-parameter grey interval incidence coefficient formula, the method of the grey interval synthesis close degree is given.Finally, by using the analytical technique of the expectation value of three-parameter interval grey numbers and projection pursuit algorithm, the projection attribute function method is
introduced. In addition, the corresponding algorithms of the above three methods are given. An example is used to demonstrate the rationality and validity of the proposed decision-making algorithms. A new approach is provided for the grey decision-making theory and its application.
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Systems Engineering - Theory & Practice    2009, 29 (1): 131-138.   DOI: 10.12011/1000-6788(2009)1-131
Abstract1328)      PDF(pc) (913KB)(795)       Save
At present, almost all kinds of fuzzy controller are designed by using $ \odot $-composite operator. But in this paper, @-composite operator is used for designing fuzzy controller and three new schemes are obtained. And the schemes are applied in the designing of industrial Boiler Drum Water Level fuzzy controller. Moreover,the scheme based on $ \odot $-composite operator which is in common use and the three new schemes based on @-composite operator are implemented by using Matlab. According to the analysis of the
experiment results, a scheme obtained based on @-composite operator is better than that obtained based on $ \odot $-composite operator, and it is the best of the four schemes.
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Systems Engineering - Theory & Practice    2009, 29 (1): 139-144.   DOI: 10.12011/1000-6788(2009)1-139
Abstract1458)      PDF(pc) (793KB)(1138)       Save
Aiming at the insufficiency of traditional water resources optimization that emphasizing water quantity while ignoring water quality, emphasizing economic water demand while ignoring ecological water requirements. Based on the theory of large scale system general optimization, the multi-objective water resources optimization model was proposed to optimize the water resources of Daqinghe in Haihe River Basin, in which the environmental water
demand and water quality were considered. The mixed genetic simulated annealing algorithm was applied to solve the model. The results show that both domestic and environmental water demand can meet requirement at different guaranteed, system coordination degrees all over 0.84.
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Systems Engineering - Theory & Practice    2009, 29 (1): 145-151.   DOI: 10.12011/1000-6788(2009)1-145
Abstract1318)      PDF(pc) (679KB)(747)       Save
Adjusting flood control limited level in phases scientifically will improve water resources utilization ratio without abating the flood control standard of reservoir, and the reasonable partition of the stage in the flood season is the precondition of controlling the limited water level by stage. Therefore, on the
background of Three Gorges Reservoir flood efficient utilization and on analyzing hydrological and meteorological characteristics of upstream and downstream of Three Gorges Reservoir, according to self-similarity of hydrological series, determining the number of flood season staged on the basis of statistical analytical method,choosing the Db4 wavelet and Mallat algorithm, the computation mode of wavelet fractal dimension estimation method is proposed and every stage's fractal dimension of Yichang gauging station is computed, then the final flood season staged is given. The results
demonstrate the periods of Three Gorges Reservoir determined by adopting wavelet fractal dimension method are consistent with that from traditional method, but the fractal dimension result by former method is easier and more stable which ensuring the feasibility and validity of the wavelet fractal dimension method applying to the flood season staged and need deep study.
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Systems Engineering - Theory & Practice    2009, 29 (1): 152-158.   DOI: 10.12011/1000-6788(2009)1-152
Abstract1700)      PDF(pc) (650KB)(998)       Save
Through analyzing problem of wavelet analysis, the annual precipitation series from 1956 to 2000 in the sub-water resources region of upper Lanzhou is decomposed into muti-time scale series with EMD method. The results show that the precipitation series has periods that about 3, 4--8, 11 years, and the physical backgrounds and trends of the IMF sub-series are discussed. An
annual precipitation-runoff forecasting ANN model based on EMD is established, with the EMD decomposition series as input and the corresponding annual runoff as output. The study shows that, as a new and original signal decomposition method, Empirical Mode Decomposition namely EMD can be used as a tool to decompose hydrological time series into exact muti-time scale sub-series for finding their local change rule, and then to supply input variables with high quality and muti-level to enhance model
quality.
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Systems Engineering - Theory & Practice    2009, 29 (1): 159-167.   DOI: 10.12011/1000-6788(2009)1-159
Abstract1353)      PDF(pc) (940KB)(750)       Save
With the increasing production of solid wastes, the old network system for solid wastes may not meet the demand. So, new landfills are needed to promote the network system's capacity for solid wastes. In this paper, a bi-objective programming model for multi-phase landfill location problems is proposed. One objective is to minimize the total cost of openning and operating, the other objective is to minimize negative effect produced by landfills. We present a hybrid multi-objective genetic algorithm to solve this
problem. The multi-objective genetic algorithm featured with a random greedy algorithm designed to repair the infeasible solutions and local heuristic is applied to find the Pareto optimal solutions. The computation results show the proposed programming model and algorithm are effective approach for the
problems.
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Systems Engineering - Theory & Practice    2009, 29 (1): 168-173.   DOI: 10.12011/1000-6788(2009)1-168
Abstract1750)      PDF(pc) (591KB)(963)       Save
Coupling Continuous Ant Colony Algorithm based function optimization and Wavelet Neural Networks, and optimizing weights in Neural Networks and wavelet parameters by Continuous Ant Colony Algorithm, best standard renewing pheromone in Continuous Ant Colony Algorithm was found, and that Wavelet Neural Networks model based on Continuous Ant Colony Algorithm was established, which it was aimed at to forecast accurately Rice Evapotranspiration, make reasonable irrigation scheduling and improve water efficiency.Testing the effects of forecasting water requirement, for well-irrigation rice area of Fujin city in Sanjiang Plain in 1985-2001, network structure was 6-12-1, best training times were 20 until the network converged, and error was only 0.0024. The results indicated that the model is simple, approximation capability is higher, convergence speed is fast enough, and forecast precision is also better. Besides a new method had been proposed for optimizing network parameters and a new thought for it formed.
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Systems Engineering - Theory & Practice    2009, 29 (1): 174-180.   DOI: 10.12011/1000-6788(2009)1-174
Abstract1818)      PDF(pc) (565KB)(852)       Save
According to the current management of coal mine safety status,a coal mine safe control model based on rough sets-artificial neural network(RS-ANN) was established. Based on Man-Machine-Environment theory, safe factors that effect the realization of coal mine safe aim were obtained. Combining the
Rough sets theory that based on the ant colony algorithm with the Neural Networks, the super combination can realize to delete the superfluous inputting information, reduce the complexity and improve the interfere resistance. Therefore, a basic thought and specific method to set up Rough sets-Neural Network system to control the coal mine safe is presented, which introduce rough sets reduction method and obtain the mini safe factor in the
historic data.At last, the neural network system can control the expect aim of coal mine safe management. The forecast results show that this approach is better than the typical BP NN with the same data.
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Systems Engineering - Theory & Practice    2009, 29 (1): 181-185.   DOI: 10.12011/1000-6788(2009)1-181
Abstract1447)      PDF(pc) (481KB)(1094)       Save
The scattered distribution of remaining oil and difficult to determine development potential are two major problems at ultra-high water cut stage. Aimed at the above-mentioned characteristics of reservoirs, on the basis of the statistics for the reservoir description and numerical simulation of typical
reservoirs. Hierarchy division and weight analysis are carried out for the main factors influencing the distribution of remaining oil using AHP(Analytical Hierarchy Process) method. And the potential appraisal model of remaining oil for heterogeneous reservoir at high water cut stage is built . And then the appraisal sofeware of remaining oil for heterogeneous reservoir at high water cut stage is developed. The software is employed to successfully describe
the remaining oil distribution in the same type reservoir of layer8 of block 21 in ShengTuo, providing guidance for scheming and implementation of unit adjustment. 21 block 8 layer.
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Systems Engineering - Theory & Practice    2009, 29 (1): 186-191.   DOI: 10.12011/1000-6788(2009)1-186
Abstract1334)      PDF(pc) (1172KB)(794)       Save
An ergonomic assessment method for cockpit layout of civil aircraft based on virtual design was put forward in the paper through evaluation to a certain cockpit. 3D model of cockpit was translated from CATIA to JACK using .wrl format, pivotal information of model was lost less, the translation didn't affect
ergonomic estimate, then the model was optimized through JACK preparing for later ergonomic appraisement; Human model, built from Chinese pilot of 1{\%}, 50{\%}, 99{\%}, was used in cockpit ergonomic analysis according to Chinese pilot dimensions data,furthermore comfort angel ranges and most comfort posture was built for fit analysis through visiting with pilots, by virtual
controlling human model to devices of cockpit, layout assessment was carried out to seat, rudder pedal, stick, lens hood, center console and top panel. Result of appraisement to every device was educed, and some advices for improvement were also given. This layout assessment method carried beforehand in virtual design phase made human factors considered into design in advance,ultimate cockpit would meet design philosophy centered on human,and the problems such as delaying period and increasing expense
for doing poorly done work over again were reduced, design efficiency was improved greatly.
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Systems Engineering - Theory & Practice    2009, 29 (10): 1-12.   DOI: 10.12011/1000-6788(2009)10-1
Abstract1216)      PDF(pc) (569KB)(730)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 13-20.   DOI: 10.12011/1000-6788(2009)10-13
Abstract1131)      PDF(pc) (786KB)(744)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 21-27.   DOI: 10.12011/1000-6788(2009)10-21
Abstract1492)      PDF(pc) (697KB)(851)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 28-34.   DOI: 10.12011/1000-6788(2009)10-28
Abstract1325)      PDF(pc) (941KB)(1356)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 35-44.   DOI: 10.12011/1000-6788(2009)10-35
Abstract1099)      PDF(pc) (951KB)(1337)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 45-52.   DOI: 10.12011/1000-6788(2009)10-45
Abstract1395)      PDF(pc) (1348KB)(942)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 53-62.   DOI: 10.12011/1000-6788(2009)10-53
Abstract1272)      PDF(pc) (870KB)(980)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 63-67.   DOI: 10.12011/1000-6788(2009)10-63
Abstract1189)      PDF(pc) (414KB)(729)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 68-75.   DOI: 10.12011/1000-6788(2009)10-68
Abstract1163)      PDF(pc) (922KB)(839)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 76-84.   DOI: 10.12011/1000-6788(2009)10-76
Abstract1410)      PDF(pc) (1405KB)(1172)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 85-93.   DOI: 10.12011/1000-6788(2009)10-85
Abstract1079)      PDF(pc) (1373KB)(847)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 94-101.   DOI: 10.12011/1000-6788(2009)10-94
Abstract1115)      PDF(pc) (686KB)(762)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 102-109.   DOI: 10.12011/1000-6788(2009)10-102
Abstract1221)      PDF(pc) (2144KB)(1184)       Save
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Systems Engineering - Theory & Practice    2009, 29 (10): 110-117.   DOI: 10.12011/1000-6788(2009)10-110
Abstract1023)      PDF(pc) (759KB)(812)       Save
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