有效进行区域可再生能源规划有利于充分利用我国丰富的可再生能源资源、推动节能减排进程、提高电源结构低碳化程度、促进智能化绿色电力的发展。在介绍我国当前面临的能源可持续发展问题以及区域可再生能源规划模型框架的基础上,对目...有效进行区域可再生能源规划有利于充分利用我国丰富的可再生能源资源、推动节能减排进程、提高电源结构低碳化程度、促进智能化绿色电力的发展。在介绍我国当前面临的能源可持续发展问题以及区域可再生能源规划模型框架的基础上,对目前国内外应用于能源规划研究的集成结构模型及其现状进行了综述,重点总结了IIASA-WEC能源-经济-环境模型、中国能源环境综合评价模型系统(theintegrated policy assessment model for China,IPAC)、能源系统长期前景规划模型(prospective outlook on long-termenergy systems,POLES)、国家能源模型(the national energymodeling systems,NEMS)以及可再生电力混合优化模型(hybrid optimization model for electric renewables,HOMER)等混合能源模型的结构及应用现状,并指出了当前存在的一些问题和未来的发展方向。展开更多
Towards integration of supply chain, manufacturing/production and investment decision making, this paper presents a hierarchical model architecture which contains six sub-models covering the areas of manufacturing con...Towards integration of supply chain, manufacturing/production and investment decision making, this paper presents a hierarchical model architecture which contains six sub-models covering the areas of manufacturing control, production operation, design and revamp, production management, supply chain and investment decision making. Six types of flow, material, energy, information, humanware, partsware and capital are clasified. These flows connect enterprise components/subsystems to formulate system topology and logical structure. Enterprise components/subsystems are abstracted to generic elementary and composite classes. Finally, the model architecture is applied to a management system of an integrated suply chain, and suggestion are made on the usage of the model architecture and further development of the model as well as implementation issues.展开更多
This paper presents some insights on the state-of-the-art practice that has been utilized recently in the inplace structural strength and fatigue analysis for topsides on deepwater floating platforms such as tension l...This paper presents some insights on the state-of-the-art practice that has been utilized recently in the inplace structural strength and fatigue analysis for topsides on deepwater floating platforms such as tension leg plat-form (TLP) and semi-submersibles. Emphases are put on analysis software,geometric and mass modeling,hydro-dynamic loading and its mapping,and analysis procedures. In addition,for the in-place analysis using structure analysis computer system (SACS),the procedure of Visual Basic for Application (VBA) is developed to map AQWA-LINE hydrodynamic loading to the SACS integrated hull/topsides model;for the in-place analysis using structure engineering system analysis model (SESAM),many computer aided applications are made to aid the post-processing. These applications have been used in structural analyses for a few TLP and semi-submersible plat-form topsides,and are briefly introduced in this paper.展开更多
The aim of this paper is to assess the impact of intellectual capital （IC） on firms＇ financial performance with reference to a sample of companies operating in the European Union （EU） area during the period from ...The aim of this paper is to assess the impact of intellectual capital （IC） on firms＇ financial performance with reference to a sample of companies operating in the European Union （EU） area during the period from 2006 to 2013. The analyses are further differentiated by country of domicile, industry sector, and historical period （pre-crisis and crisis）. We investigate whether the value of the components of IC is a relevant factor that influences firms＇ performance, proposing and testing a modified version of the value added intellectual capital （VAICTM） model which also considers country-specific differences in terms of default risk. The empirical results evidence the relevance of the information on IC disclosed by companies. Differences arise depending on the reference country, industry, and historical period examined. The main limitations of the research are the unbalanced structure of the sample among countries and industries and the specificity of the examined sample （listed firms applying IAS/IFRS system）. The main implication of the study is that, since we demonstrate the value relevance of IC, our findings could be of interest for standard setters for defining a standard （qualitative and quantitative） level of information on human resources to be disclosed by companies in their financial statements. Our contribution to the literature is the proposal of some relevant modifications to the original VAICTM model and providing new evidence on the influence that IC had in recent years on business performance in the EU.展开更多
In this paper, the structured trajectory planning of lane change in collision-free road environment is studied and validated using the vehicle-driver integration data, and a new trajectory planning model for lane chan...In this paper, the structured trajectory planning of lane change in collision-free road environment is studied and validated using the vehicle-driver integration data, and a new trajectory planning model for lane change is proposed based on linear offset and sine function to balance driver comfort and vehicle dynamics. The trajectory curvature of the proposed model is continuous without mutation, and the zero-based curvature at the starting and end points during lane change assures the motion direction of end points in parallel with the lane line. The field experiment are designed to collect the vehicle-driver integration data, such as steering angle, brake pedal angel and accelerator pedal angel. The correction Correlation analysis of lane-changing maneuver and influencing variables is conducted to obtain the significant variables that can be used to calibrate and test the proposed model. The results demonstrate that vehicle velocity and Y-axis acceleration have significant effects on the lane-changing maneuver, so that the model recalibrated by the samples of different velocity ranges and Y-axis accelerations has better fitted performance compared with the model calibrated by the sample trajectory. In addition, the proposed model presents a decreasing tendency of the lane change trajectory fitted MAE with the increase of time span of calibrating samples at the starting stage.展开更多
文摘有效进行区域可再生能源规划有利于充分利用我国丰富的可再生能源资源、推动节能减排进程、提高电源结构低碳化程度、促进智能化绿色电力的发展。在介绍我国当前面临的能源可持续发展问题以及区域可再生能源规划模型框架的基础上,对目前国内外应用于能源规划研究的集成结构模型及其现状进行了综述,重点总结了IIASA-WEC能源-经济-环境模型、中国能源环境综合评价模型系统(theintegrated policy assessment model for China,IPAC)、能源系统长期前景规划模型(prospective outlook on long-termenergy systems,POLES)、国家能源模型(the national energymodeling systems,NEMS)以及可再生电力混合优化模型(hybrid optimization model for electric renewables,HOMER)等混合能源模型的结构及应用现状,并指出了当前存在的一些问题和未来的发展方向。
基金Supported by the National Natural Science Foundation of China (No. 79931000) and The State Major Basic Research Development Program (No. G20000263).
文摘Towards integration of supply chain, manufacturing/production and investment decision making, this paper presents a hierarchical model architecture which contains six sub-models covering the areas of manufacturing control, production operation, design and revamp, production management, supply chain and investment decision making. Six types of flow, material, energy, information, humanware, partsware and capital are clasified. These flows connect enterprise components/subsystems to formulate system topology and logical structure. Enterprise components/subsystems are abstracted to generic elementary and composite classes. Finally, the model architecture is applied to a management system of an integrated suply chain, and suggestion are made on the usage of the model architecture and further development of the model as well as implementation issues.
文摘This paper presents some insights on the state-of-the-art practice that has been utilized recently in the inplace structural strength and fatigue analysis for topsides on deepwater floating platforms such as tension leg plat-form (TLP) and semi-submersibles. Emphases are put on analysis software,geometric and mass modeling,hydro-dynamic loading and its mapping,and analysis procedures. In addition,for the in-place analysis using structure analysis computer system (SACS),the procedure of Visual Basic for Application (VBA) is developed to map AQWA-LINE hydrodynamic loading to the SACS integrated hull/topsides model;for the in-place analysis using structure engineering system analysis model (SESAM),many computer aided applications are made to aid the post-processing. These applications have been used in structural analyses for a few TLP and semi-submersible plat-form topsides,and are briefly introduced in this paper.
文摘The aim of this paper is to assess the impact of intellectual capital （IC） on firms＇ financial performance with reference to a sample of companies operating in the European Union （EU） area during the period from 2006 to 2013. The analyses are further differentiated by country of domicile, industry sector, and historical period （pre-crisis and crisis）. We investigate whether the value of the components of IC is a relevant factor that influences firms＇ performance, proposing and testing a modified version of the value added intellectual capital （VAICTM） model which also considers country-specific differences in terms of default risk. The empirical results evidence the relevance of the information on IC disclosed by companies. Differences arise depending on the reference country, industry, and historical period examined. The main limitations of the research are the unbalanced structure of the sample among countries and industries and the specificity of the examined sample （listed firms applying IAS/IFRS system）. The main implication of the study is that, since we demonstrate the value relevance of IC, our findings could be of interest for standard setters for defining a standard （qualitative and quantitative） level of information on human resources to be disclosed by companies in their financial statements. Our contribution to the literature is the proposal of some relevant modifications to the original VAICTM model and providing new evidence on the influence that IC had in recent years on business performance in the EU.
基金supported by the National Natural Science Foundation of China(Grant No.61473028)the National Basic Research Program of China("973" Program)(Grant No.2012CB725403)the National High Technology Research and Development Program of China("863" Program)(Grant No.2015AA124103)
文摘In this paper, the structured trajectory planning of lane change in collision-free road environment is studied and validated using the vehicle-driver integration data, and a new trajectory planning model for lane change is proposed based on linear offset and sine function to balance driver comfort and vehicle dynamics. The trajectory curvature of the proposed model is continuous without mutation, and the zero-based curvature at the starting and end points during lane change assures the motion direction of end points in parallel with the lane line. The field experiment are designed to collect the vehicle-driver integration data, such as steering angle, brake pedal angel and accelerator pedal angel. The correction Correlation analysis of lane-changing maneuver and influencing variables is conducted to obtain the significant variables that can be used to calibrate and test the proposed model. The results demonstrate that vehicle velocity and Y-axis acceleration have significant effects on the lane-changing maneuver, so that the model recalibrated by the samples of different velocity ranges and Y-axis accelerations has better fitted performance compared with the model calibrated by the sample trajectory. In addition, the proposed model presents a decreasing tendency of the lane change trajectory fitted MAE with the increase of time span of calibrating samples at the starting stage.
