The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific...The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific value representing the actual thermal energy provided for blast furnace was proposed. A cost performance evaluation model of coal injection was built up for the optimal selection of various kinds of coal based on effective calorific value. The model contains two indicators: coal effective calorific value which has eight sub-indicators and coal injection cost which includes four sub-indicators. In addition, the calculation principle and application of cost performance evaluation model in a Chinese large-scale iron and steel company were comprehensively introduced. The evaluation results finally confirm that this novel model is of great significance to the optimal selection of blast furnace pulverized coal.展开更多
The publication of ISO 15686-5 is significant for studies related to the life-cycle costs of buildings. Among the many economic evaluation methods, the NPV method is recommended for use by this standard. This stu...The publication of ISO 15686-5 is significant for studies related to the life-cycle costs of buildings. Among the many economic evaluation methods, the NPV method is recommended for use by this standard. This study explains the concept and method of PV, and then provides an explanation of the concept and method of NPV, and points out the limitations in the practical application of the method.展开更多
Since the mid 1980s, an increasing number of project management software packages (PMSP) have appeared in the market to support project management organizations. Currently there are more than 500 software tools availa...Since the mid 1980s, an increasing number of project management software packages (PMSP) have appeared in the market to support project management organizations. Currently there are more than 500 software tools available. They vary widely both in their prices and capabilities. Despite the wide spread of PMSP, project-based organizations are left unguided as to how they should select the most appropriate software tool for their intended business use. The aim of this paper was to develop an evaluation/scoring module suitable for comparing different project management software packages to help select the most appropriate package. The evaluation model is based on the ISO/IEC evaluation criterion that takes into consideration all the necessary features and characteristics required in project management software. The evaluation model will provide software users and project organizations with a useful tool to compare various packages available in the market and select the best that suits their business needs.展开更多
基金Project(51134008)supported by the National Natural Science Foundation of ChinaProject(2012CB720401)supported by the National Basic Research Program of China
文摘The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific value representing the actual thermal energy provided for blast furnace was proposed. A cost performance evaluation model of coal injection was built up for the optimal selection of various kinds of coal based on effective calorific value. The model contains two indicators: coal effective calorific value which has eight sub-indicators and coal injection cost which includes four sub-indicators. In addition, the calculation principle and application of cost performance evaluation model in a Chinese large-scale iron and steel company were comprehensively introduced. The evaluation results finally confirm that this novel model is of great significance to the optimal selection of blast furnace pulverized coal.
文摘The publication of ISO 15686-5 is significant for studies related to the life-cycle costs of buildings. Among the many economic evaluation methods, the NPV method is recommended for use by this standard. This study explains the concept and method of PV, and then provides an explanation of the concept and method of NPV, and points out the limitations in the practical application of the method.
文摘Since the mid 1980s, an increasing number of project management software packages (PMSP) have appeared in the market to support project management organizations. Currently there are more than 500 software tools available. They vary widely both in their prices and capabilities. Despite the wide spread of PMSP, project-based organizations are left unguided as to how they should select the most appropriate software tool for their intended business use. The aim of this paper was to develop an evaluation/scoring module suitable for comparing different project management software packages to help select the most appropriate package. The evaluation model is based on the ISO/IEC evaluation criterion that takes into consideration all the necessary features and characteristics required in project management software. The evaluation model will provide software users and project organizations with a useful tool to compare various packages available in the market and select the best that suits their business needs.
