本文对燃气轮机发电机组整机的投资模型进行了分析,结合2018 Gas Turbine Word(GTW)handbook的数据对燃气轮机整机投资模型进行了更新,并给出了燃气-蒸汽联合循环的的单变量、双变量投资模型。无论对燃气轮机整机还是联合循环,采用幂函...本文对燃气轮机发电机组整机的投资模型进行了分析,结合2018 Gas Turbine Word(GTW)handbook的数据对燃气轮机整机投资模型进行了更新,并给出了燃气-蒸汽联合循环的的单变量、双变量投资模型。无论对燃气轮机整机还是联合循环,采用幂函数的投资模型都优于对数函数,而单变量和双变量投资模型的精度相当。采用幂函数单变量或者双变量的投资模型都可以实现全功率范围误差10%以内的投资估算。展开更多
To balance inventory cost with diverse demand,an optimal investment decision on necessary process improvement for delayed product differentiation is studied. A two-stage flexible manufacturing system is modeled as a c...To balance inventory cost with diverse demand,an optimal investment decision on necessary process improvement for delayed product differentiation is studied. A two-stage flexible manufacturing system is modeled as a continuous time Markov chain. The first production stage manufactures semifinished products based on a make-to-stock policy. The second production stage customizes semi-finished products from the first production stage on a make-to-order policy. Various performance measures for this flexible manufacturing system are evaluated by using matrix geometric methods. An optimization model to determine the level of investment on process improvement that minimizes the manufacturer ’s total cost is established. The results show that,a higher investment level can reduce both the expected customer order fulfillment delay and the expected semi-finished products inventory. When the initial order penetration point is 0. 4,the manufacturer ’s total cost is reduced by 15. 89% through process investment. In addition, the optimal investment level increases with the increase in the unit time cost of customer order fulfillment delay,and decreases with the increase in the product value and the initial order penetration point.展开更多
Unit trust is a collective investment scheme for investors, who seek to meet their long-term investment objectives for better returns with diversified portfolios. Unit trust is one of the largest sources of funding in...Unit trust is a collective investment scheme for investors, who seek to meet their long-term investment objectives for better returns with diversified portfolios. Unit trust is one of the largest sources of funding in Malaysia and plays a significant role in financial development and economic growth. The objective of this paper is to provide an overview of the development and the performance trends of unit trust investment schemes in Malaysia. There are several types of unit trust products available in Malaysia： both conventional as well as Islamic unit trust schemes （UTSs）. The rapid growth of investment management industry over the last 10 years was largely driven by the unit trust industry, in which the net asset value （NAV） grew annually by 18.0% from RM43.3 billion in 2000 to RM226.8 billion in 2010. The penetration rate of the unit trust industry rose from 10.0% in 2000 to 17.8% in 2010.展开更多
The ability of fund asset allocation is an important factor of influence the fund performance. Choose stock funds, starting from the stock fund investment strategy, different investment strategies have their respectiv...The ability of fund asset allocation is an important factor of influence the fund performance. Choose stock funds, starting from the stock fund investment strategy, different investment strategies have their respective asset allocation. For fund asset allocation ability, this paper chose different performance indicators, through the method of comparison between group and group, listed stock funds of our country classification in K - W single factor ANOVA. At the same time, according to the result of test, analyze the causes affect the ability of the fund asset allocation, and gives the corresponding investment advice.展开更多
文摘本文对燃气轮机发电机组整机的投资模型进行了分析,结合2018 Gas Turbine Word(GTW)handbook的数据对燃气轮机整机投资模型进行了更新,并给出了燃气-蒸汽联合循环的的单变量、双变量投资模型。无论对燃气轮机整机还是联合循环,采用幂函数的投资模型都优于对数函数,而单变量和双变量投资模型的精度相当。采用幂函数单变量或者双变量的投资模型都可以实现全功率范围误差10%以内的投资估算。
基金The National Natural Science Foundation of China(No.71661147004)
文摘To balance inventory cost with diverse demand,an optimal investment decision on necessary process improvement for delayed product differentiation is studied. A two-stage flexible manufacturing system is modeled as a continuous time Markov chain. The first production stage manufactures semifinished products based on a make-to-stock policy. The second production stage customizes semi-finished products from the first production stage on a make-to-order policy. Various performance measures for this flexible manufacturing system are evaluated by using matrix geometric methods. An optimization model to determine the level of investment on process improvement that minimizes the manufacturer ’s total cost is established. The results show that,a higher investment level can reduce both the expected customer order fulfillment delay and the expected semi-finished products inventory. When the initial order penetration point is 0. 4,the manufacturer ’s total cost is reduced by 15. 89% through process investment. In addition, the optimal investment level increases with the increase in the unit time cost of customer order fulfillment delay,and decreases with the increase in the product value and the initial order penetration point.
文摘Unit trust is a collective investment scheme for investors, who seek to meet their long-term investment objectives for better returns with diversified portfolios. Unit trust is one of the largest sources of funding in Malaysia and plays a significant role in financial development and economic growth. The objective of this paper is to provide an overview of the development and the performance trends of unit trust investment schemes in Malaysia. There are several types of unit trust products available in Malaysia： both conventional as well as Islamic unit trust schemes （UTSs）. The rapid growth of investment management industry over the last 10 years was largely driven by the unit trust industry, in which the net asset value （NAV） grew annually by 18.0% from RM43.3 billion in 2000 to RM226.8 billion in 2010. The penetration rate of the unit trust industry rose from 10.0% in 2000 to 17.8% in 2010.
文摘The ability of fund asset allocation is an important factor of influence the fund performance. Choose stock funds, starting from the stock fund investment strategy, different investment strategies have their respective asset allocation. For fund asset allocation ability, this paper chose different performance indicators, through the method of comparison between group and group, listed stock funds of our country classification in K - W single factor ANOVA. At the same time, according to the result of test, analyze the causes affect the ability of the fund asset allocation, and gives the corresponding investment advice.
