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In the context of closed-loop supply chains (CLSCs), we investigate two critical environmental factors of the product weight and the collection rate, as well as their environmental consequence of the landfill quantity. There are three closely related CLSC models consisting of a manufacturer who also recycles used products and a collector of the used products. The first CLSC is a centralized model...
The main issue of economic growth research is driving factors. This article explores economic growth driving factors' output elasticity and contribution rate in a sample interval, using extended Cobb-Douglas production function with Hebei's data between 2001 and 2008. It also analyses Hebei's characteristics of economic growth mode in the latest 8 years. The result of empirical study shows that our...
This paper constructs an economic growth theory in which economic growth is driven by knowledge accumulation and endogenously determined by the evolutionary dynamics of division of labor between scientific research and material production. Distinguished from the existing growth models based on representative individual's intertemporal choice, this paper formulates economy as an evolutionary process...
Considering the impact of the objective environment on the economic system, this article introduces gray elements to a dynamic input-output model which is based on variable structure control, and proposes the methods of determining the important parameters of the model. This model can reveal the relationship between propensity to consume, propensity to invest, the structure of consumption and investment,...
In this paper, we consider a manufacturer-supplier chain situation in which the manufacturer coordinates, e.g., supports, its supplier's innovation that can eventually lead to supply cost reduction. Developing some mathematical models, we show that sharing innovation cost has a better coordination effect, and manufacturer can share a part of innovation cost when the innovation coefficient is lager,...
The article Starting from the human capital costing, Mathematical Modeling as a leading, put forward research ideas that Divided Corporate profit into two parts of human capital and Physical capital. Building human capital accounting model Through the economic value added model (EVA), And then make a study of Human Capital Accounting. Provide a basis for Human Capital Accounting, and has solved the...
Specific to the present opposite relationship existing prevalently between participants in the pattern of construction project management, Partnering pattern can be adopted to promote all parties of project management to form the harmonious cooperative relationship, which is explained through theory and demonstration, and two fields in which Partnering pattern is applied in our country are put forward...
Construction projects are faced with several major problems, such as lack of co-operation, limited trust and inefficient communication. As an innovative procurement approach, partnering has been used in many construction projects in past decades to achieve better project outcomes and to reduce construction disputes. Based on the character of construction projects and partnering, this paper demonstrated...
In the early of 1990s, reverse logistics was beginning to be widely concerned by some developed countries, as the government and consumers were more attached importance to environment. China had paid more attention to forward logistics, but there is little concern about reverse logistics. As China entered WTO, companies will be confronted with fierce competition. It is necessary for Chinese companies...
This paper establishes a model of equivalent price settlement (time-dependent) in engineering construction contracts brought by the principle of time value of capital and completes a sensitivity analysis to the value realization of the contract price from three aspects of the changes in rate of return on investments, settlement frequency and cascade reduced settlement of the project. The calculating...
This paper introduces the different views of innovation and expatiates on the national/ sub-national innovation system, including the basic functions, characteristics and models of the national/sub-national innovation systems. A mathematic model of an innovation system is brought forward. Then the innovation system is analyzed with the method of system dynamics. And two causal loop diagrams are given...
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