As aging becomes increasingly serious,how to make the life of the elderly more convenient and comfortable has become one of the social problems to be solved urgently.Old residential areas are one of spaces where the e...As aging becomes increasingly serious,how to make the life of the elderly more convenient and comfortable has become one of the social problems to be solved urgently.Old residential areas are one of spaces where the elderly gather.In this paper,the prominent problems in the community space of existing old residential areas that are not conducive to the life of the elderly were analyzed,and corresponding countermeasures to transform the community space were put forward.It is hoped that public space can play its due value and make old residential areas glow with new vitality.展开更多
This paper presents an energy management optimization system based on an adaptive functional state model of battery aging for internal combustion engine vehicles(ICEVs).First,the functional characteristics of batterie...This paper presents an energy management optimization system based on an adaptive functional state model of battery aging for internal combustion engine vehicles(ICEVs).First,the functional characteristics of batteries in ICEVs are investigated.Then,an adaptive functional state model is proposed to represent battery aging throughout the entire battery service life.A battery protection scheme is developed,including over-discharge and graded over-current protection to improve battery safety.A model-based energy management strategy is synthesized to comprehensively optimize fuel economy,battery life preservation,and vehicle performance.The performance of the proposed scheme was examined under comprehensive test scenarios based on field and bench tests.The results show that the proposed energy management algorithm can effectively improve fuel economy.展开更多
Against the backdrop of a healthy city initiative in helping encourage and facilitate walking behavior,this study first elaborates the fitness function of the ladder trails,which largely form the daily living spaces f...Against the backdrop of a healthy city initiative in helping encourage and facilitate walking behavior,this study first elaborates the fitness function of the ladder trails,which largely form the daily living spaces for the people in mountainous cities or areas.It then analyses the existing research on the elements and guidelines of environmental design from the perspective of their pedestrian friendliness while discussing their suitability to the needs of the elderly.With the research framework set up in the first part,empirical research focusing on the walking behavior of the elderly has been carried out based on two comparable cases of Chongqing Mountain trails.Observing,survey,and interviews have been applied to collect the data.This study concludes with a summary of the elements and principles for designing ladder trails,which are walking-friendly for the elderly.展开更多
基金by the General Project of Natural Science Foundation of Beijing City(8212009)Organized Scientific Research Project of North China University of Technology in 2023(110051360023XN278).
文摘As aging becomes increasingly serious,how to make the life of the elderly more convenient and comfortable has become one of the social problems to be solved urgently.Old residential areas are one of spaces where the elderly gather.In this paper,the prominent problems in the community space of existing old residential areas that are not conducive to the life of the elderly were analyzed,and corresponding countermeasures to transform the community space were put forward.It is hoped that public space can play its due value and make old residential areas glow with new vitality.
基金supported by National Natural Science Foundation of China(Grant No.52002209)Beijing Nova Program,and the State Key Laboratory of Automotive Safety and Energy(Grant No.KFY2210).
文摘This paper presents an energy management optimization system based on an adaptive functional state model of battery aging for internal combustion engine vehicles(ICEVs).First,the functional characteristics of batteries in ICEVs are investigated.Then,an adaptive functional state model is proposed to represent battery aging throughout the entire battery service life.A battery protection scheme is developed,including over-discharge and graded over-current protection to improve battery safety.A model-based energy management strategy is synthesized to comprehensively optimize fuel economy,battery life preservation,and vehicle performance.The performance of the proposed scheme was examined under comprehensive test scenarios based on field and bench tests.The results show that the proposed energy management algorithm can effectively improve fuel economy.
基金the National Natural Science Foundation of China(General Program)Nos.51978090 and 51778076..
文摘Against the backdrop of a healthy city initiative in helping encourage and facilitate walking behavior,this study first elaborates the fitness function of the ladder trails,which largely form the daily living spaces for the people in mountainous cities or areas.It then analyses the existing research on the elements and guidelines of environmental design from the perspective of their pedestrian friendliness while discussing their suitability to the needs of the elderly.With the research framework set up in the first part,empirical research focusing on the walking behavior of the elderly has been carried out based on two comparable cases of Chongqing Mountain trails.Observing,survey,and interviews have been applied to collect the data.This study concludes with a summary of the elements and principles for designing ladder trails,which are walking-friendly for the elderly.
