Application of 0-1 Linear Programming in Investment Combination in Enterprise

The optimal model of investment combination has been constructed with 0-1 linear programming. The subject-to equations of the model are also discussed, and the solution of investment combination is acquired through special software. A case study demonstrates that the model of investment combination can effectively resolve the decision of annual planning of investment items in enterprise.     

Appraisal Model of Investment Decision and Its Application

Through building the appraisal model of investment chance and relative appraisal index, the best investment chance could be chosen by systematic analysis scientifically and objectively, so as to avoid blind investment and ensure the development of national economy and the interests of investors.     

Application of Cluster Analysis in Stock Investment

The primary methods of stock investment analysis are fundamental analysis ,technic analsis and portfolio investment analysis.Based on analyzing the applicability and limitation of these methods, the paper is applying the cluster analysis in the stock investment, and pointing out it is a feasible and effective way to give advices to stock investment. Cluster analysis firstly looks into the industry factor, company factor, profitability and pullulation of each stock, so people can discover the investment value through stock'immanent value which is decided by their fundamental characters.To gather the similar stocks,a synthetic evaluation index system is erected to measure the similarity of stock all-roundly and objectively. Cluster analysis can help investors hold the whole character of stocks, make certain of investing scale and suppose the possible variation of stock price.So it will be easier for investors to choose investing occasion.     

Optimal Design of Plane Cascades Based on Wavelet Theory

Based on the optimal control theory and Lagrange interpolation an optimal design model of plane cascades of 3D blade in an arbitrary surface of revolution is established. Using wavelet theory to solve the model, and lots of numerical results are obtained. The results show that the wavelet method is more effective than the conventional methods.     

VaR Model and Application to Securities Investment Management

VaR model is one of methods to measure and control market risk.This paper analyzes VaR model principle and its main factors.According to function relation,the relationship between the portfolio value and its market risk factors are sorted in two kinds: linear and nonlinear.The method of calculating the VaR is put forward.Finally,the article analyzes the application of VaR model to portfolio,risk control,information disclosure and financial supervison.     

Optimal Control System for UPFC

This paper first analyzes the internal dynamic process of the UPFC,then a five order differential equation is presented to describe dynamic behavior of UPFC. In term of this,a optimal control system is designed.Dynamic simulation of a transmission system demonstrates the effectiveness.     

Risky Investment Contracts with the Theory of Games

There exists the information asymmetry between venture capitalists and venture entrepreneurs which can cause the problem of moral hazard. To deal with the problem of moral hazard, it is necessary to choose the proper investment tool and compensation policy. A game model is set up, which helps to study which tool is the best investment tool among debt, common stock, convertible preferred stock and convertible debt, given the venture entrepreneurs can be made work hard. By the analysis of the model, a fact can be found that convertible preferred stock and convertible debt is the best way if the better result is twice larger than the original capital. Otherwise, the form of debt will be better.     

An Optimal Combinatorial Forecast Method in for Future Profit of Assets

This paper presents an optimal combinatorial forecast method for the future profit of assets.     

Application of Evolutionary Programming in Optimal Reactive Power Dispatch

This paper describes an application of evolutionary programming(EP) to reactive power optimization and voltage control of power systems.Some technical problems which conclude mutation sacle,fitness value and population size have been solved to make EP practical for solving the optimal power flow problems.The computational results with EP have been compared with those obtained from a conventional gradient based optimization method.The comparision shows that EP are better than conventional methods in dealing with the optimization of noncontinuous and nonsmooth funcnons.The EP show the ability to search for the global optimum in reactive optimization that has multiple optima.     

An Optimal Distribution Strategy for Dampers in Frame Structures

An optimal distribution strategy of the energy dissipation dampers installed in the bottom stories of frame structures was put forward based on dynamic characteristics of base-isolated system. Firstly, the number of stories was defined by calculating the ratio of site characteristic frequency ω and bottom isolation stories natural frequency ωn of energy dissipation structure. Then, with regard to storey drift permissible value, the quantity and installation positions of dampers were defined through several simple calculations. 2 sets of actual strong earthquake records and 1 set of artificial acceleration time-history curve for a 10 stories frame structure were selected to conduct the time-history analysis under frequently and rarely earthquakes by ETABS software and Perform-3D software. The results show that the dynamic characteristics of energy dissipation structure in which the dampers are installed in lower stories are similar to those of base-isolated system.     

Two Optimization Methods for Portfolio Investment Decision

On the basis of introducing some fundamental theories and computational methods of portfolio investment, this paper derives a decision model for searching optimal portfolio with the utility function. Then,after comparing the new model with the conditional extreme optimization model,which has been usually considered by people,the result shows the new model would be more efficient under certain conditions.     

Optimal Control of Semi-Active Suspensions with ER Shock Absorber

An ER shock absorber with mixed mode is designed and its mathematical model is built. The optimal control method with LQ is applied to semi-active suspension systems in vehicle. A optimal output tuner is designed on basis of 1/4 dynamic model and the characteristics of the ER shock absorber. Its aim function and the weighting parameter matrix are determined. The feedback gain vector is found from solving the Algebraic Equation. The result shows that the optimal controller could not only diminish the body acceleration effectively but also improve the ride and handling characteristics. The construction of the ER shock absorber is reasonable and its performance meets the optimal control requirements of semi-active suspension system under the 3 kV/mm. In additional, the optimal control has low cost and energy consumption as well as rapid response . Such a system can meet with the requirements of semi-active suspension control completely.     

Economic Analysis of the Financial Supporting Policy in the Economic Development Zones

This paper makes an economic analysis of the Financial Supporting Policy to invite outside investments in the Economic Development Zones(EDZs),deduces the formula of the optimal ratio of the quantity of financial support to the local financial income and draws figures of the curve.The EDZs should consider the effectiveness of financial subsidy before they use this policy;technical progress is the precondition of subsidy.The Financial Supporting Policy should first help those industries that can promote local economic growth best get subsidy.Under the conditions of low initial economic level and subsidy combining with other preferred policies,the ratio of financial subsidy should reduce;properly by prolonging the time limit and the EDZs' paying more attention to long-run objection lead to lower subsidy ratio.     

Application of Flow Analysis to Risk Management of Land Investment

Combined with the development flow of real estate project,firstly a flow analysis is put forward for land investment risk identification of real estate projects,then by method of list analysis and method of expectancy computing to determine the risk level and the gain and loss of expectancy of land investment.Based on the relation and flow chart of land investment risk,the risk intensity of land investment is computed,in order to achieve an objective,effective and scientific dynamic management of land investment risk.     

The Cost Control of Government Investment Project in the Design Stage

The design stage is the key part in the control of construction cost,but,there is always short of strength of cost control in design phase. In this paper,the characteristics of construction design stage are discussed, and five methods for construction cost control in design phase are put forward, which inspire us further to strengthen control and management in design phase as a governmental policy and ensure feasible technique and reasonable economy designs.     

Calculating the Optimal Radius of the Elastic-Plastic Junction

In viewpoint of the fourth strength theory, the authors derive a theoretic formula for calculating the optimal radius of elastic-plastic juncation in auto-ferttaged thick-wall cylindric pressure vessel, then derive a theoretic formula of the allowable maximal operating pressure for the pressure vessel with autoferttaged. In the end, the authors propose a restrictive prerequisite of maximum operating perssure for engineering.     

福建省商品林投资风险评价

本文构建了福建省商品林投资风险评价指标体系。然后,采用因子分析法,对福建、浙江、广东、江西、湖南、湖北、云南等7个省份的商品林投资风险进行横向评价和比较,通过评价,发现2007年在7个比较省份中,福建省综合评价得分排名第二,风险较小。在此基础上,找出影响福建省商品林投资风险的薄弱因子,并提出相应的对策。     

A New Heuristic Evolutionary Programming and Its Application in Solution of the Optimal Power Flow

A new algorithm,based on the combination of the evolutionary programming with the traditional gradient adjustment technique,is presented for solving the optimal power flow problem which describes some technical problems(representations of candidate solutions,evaluation function,mutation operator).Its efficiency is higher than that of general evolutionary programming.     

以投资为目的的森林资源资产评估问题探讨

随着以投资为目的的森林资源资产评估业务日益增多,许多相关的理论问题亟需解决。通过对该目的下的价值类型、评估方法、评估参数等问题研究发现:价值类型的选择主要取决于委托者的利益诉求,同时要考虑现实市场条件的限制,具体可选类型包括市场价值类型与投资价值类型;评估方法的选择要与评估目的、价值类型相适应。当选择市场价值类型时,市场比较法应该是评估首选。当选择投资价值类型时,如果委托方是财务投资者,收益现值法是评估首选,如果委托方是战略投资者,公式P=Va+S×K应是评估首选;评估参数的选择,要与评估方法相一致,市场法的关键参数是可比的参照对象,收益现值法应用的关键参数是投资收益率,公式P=Va+S×K应用的关键参数是收益分成率K。以投资为目的的森林资源资产评估中,还要考虑森林采伐限额及其他相关政策的影响。