The paper summarized the development course of Shijiazhuang Zoo from the aspects of origin, animal feeding and management and venue construction, and showed the achievements of Shijiazhuang Zoo in feeding and reproduc...The paper summarized the development course of Shijiazhuang Zoo from the aspects of origin, animal feeding and management and venue construction, and showed the achievements of Shijiazhuang Zoo in feeding and reproduction, scientific research and communication, venue renova-tion and expansion in different periods. The problems existing in the development of Shijiazhuang Zoo were put forward, and the future development was prospected.展开更多
In the context of an aging population, the promotion of time banking as a new model of voluntary service can help alleviate the ever–increasing pressures for elderly care and services in China. The development of tim...In the context of an aging population, the promotion of time banking as a new model of voluntary service can help alleviate the ever–increasing pressures for elderly care and services in China. The development of time banking in China has successively undergone the stage of traditional practice, the stage of infancy and exploration, as well as the stage of accelerated growth. Meanwhile, this process has also witnessed the formation of many localized innovations. To further the localization and innovation of time banking, this paper analyzes its basis in traditional culture, summarizes its process of practice and explores new directions of future innovation. Based on the summary of existing problems, this paper proposes to enhance the recognition of time banking among the public, facilitate localized innovation of time banking, promote its informatization, and involve the participation of young people, particularly college students.展开更多
Well integrity technology can effectively ensure the safety of the entire life cycle of oil and gas wells. With the exploration and development of more and more high-temperature, high-pressure, high-yield and deep wel...Well integrity technology can effectively ensure the safety of the entire life cycle of oil and gas wells. With the exploration and development of more and more high-temperature, high-pressure, high-yield and deep wells, and the constantly increasing requirements for safety and environmental protection in various countries, well integrity technology has become a research hot spot in the oil industry. Based on the analysis of the four basic concepts of well integrity: full life cycle, well integrity management system, well barrier, and risk assessment, this article conducts a comparative analysis of the development history of well integrity technologies at home and abroad, and systematically summarizes foreign wells. The current status of integrity technology, based on the above investigation and analysis, puts forward suggestions for the next development direction of well integrity technology, which has certain guiding significance for the development of the integrity of the next step.展开更多
This review article on the development course of scandium solvent extraction covers:(i)neutral phosphorus extractants;(ii)acid phosphorus extractants;(iii)carboxylic acid extractants;(iv)amine extractants;(v)chelating...This review article on the development course of scandium solvent extraction covers:(i)neutral phosphorus extractants;(ii)acid phosphorus extractants;(iii)carboxylic acid extractants;(iv)amine extractants;(v)chelating extractants;(vi)synergistic extractants.Those extractants are of valuable reference for developing new separation process of scandium from red mud,titanium dioride and other rare earth resources.展开更多
Purpose:This article reviews the development of quantitative methods in educational research in China since 1978.Design/Approach/Methods:For this summary and literature review,we used data from the China National Know...Purpose:This article reviews the development of quantitative methods in educational research in China since 1978.Design/Approach/Methods:For this summary and literature review,we used data from the China National Knowledge Infrastructure(CNKI),relevant books,and research output from the Graduate School of Education,Peking University.Findings:We divided the development of quantitative methods in Chinese educational research into four stages:the Startup Stage(1978–1988),the Gradual Application Stage(1989–1998),the Growth Spurt Stage(1999–2008),and the Integrated and Diverse Development Stage(2009–2018).Overall,the development of quantitative methods in Chinese educational research shows sustained innovation in numerous aspects,including research methods,data sources,utilization of advancements in computing technology and statistical software,and research topics.However,despite the relatively advanced state of quantitative methods,education measurement and evaluation require further attention.The questionnaire and experimental research data currently available indicate the need to improve the mining and utilization of big data.Moreover,while Chinese educational researchers have demonstrated their proficiency in using quantitative research methods,improvements remain to be made with respect to collaboration and sharing.Originality/Value:This article is the first to analyze systemically the development of quantitative methods in Chinese educational research.It provides an original summary of the development and characteristics of quantitative methods in educational research in China.展开更多
基金Supported by Science and Technology Project of Department of Housing&Urban-Rural Development of Hebei Province(2013-153)。
文摘The paper summarized the development course of Shijiazhuang Zoo from the aspects of origin, animal feeding and management and venue construction, and showed the achievements of Shijiazhuang Zoo in feeding and reproduction, scientific research and communication, venue renova-tion and expansion in different periods. The problems existing in the development of Shijiazhuang Zoo were put forward, and the future development was prospected.
文摘In the context of an aging population, the promotion of time banking as a new model of voluntary service can help alleviate the ever–increasing pressures for elderly care and services in China. The development of time banking in China has successively undergone the stage of traditional practice, the stage of infancy and exploration, as well as the stage of accelerated growth. Meanwhile, this process has also witnessed the formation of many localized innovations. To further the localization and innovation of time banking, this paper analyzes its basis in traditional culture, summarizes its process of practice and explores new directions of future innovation. Based on the summary of existing problems, this paper proposes to enhance the recognition of time banking among the public, facilitate localized innovation of time banking, promote its informatization, and involve the participation of young people, particularly college students.
文摘Well integrity technology can effectively ensure the safety of the entire life cycle of oil and gas wells. With the exploration and development of more and more high-temperature, high-pressure, high-yield and deep wells, and the constantly increasing requirements for safety and environmental protection in various countries, well integrity technology has become a research hot spot in the oil industry. Based on the analysis of the four basic concepts of well integrity: full life cycle, well integrity management system, well barrier, and risk assessment, this article conducts a comparative analysis of the development history of well integrity technologies at home and abroad, and systematically summarizes foreign wells. The current status of integrity technology, based on the above investigation and analysis, puts forward suggestions for the next development direction of well integrity technology, which has certain guiding significance for the development of the integrity of the next step.
基金Project supported by the National Basic Research Program of China(973 Project,2006CB403302)。
文摘This review article on the development course of scandium solvent extraction covers:(i)neutral phosphorus extractants;(ii)acid phosphorus extractants;(iii)carboxylic acid extractants;(iv)amine extractants;(v)chelating extractants;(vi)synergistic extractants.Those extractants are of valuable reference for developing new separation process of scandium from red mud,titanium dioride and other rare earth resources.
文摘Purpose:This article reviews the development of quantitative methods in educational research in China since 1978.Design/Approach/Methods:For this summary and literature review,we used data from the China National Knowledge Infrastructure(CNKI),relevant books,and research output from the Graduate School of Education,Peking University.Findings:We divided the development of quantitative methods in Chinese educational research into four stages:the Startup Stage(1978–1988),the Gradual Application Stage(1989–1998),the Growth Spurt Stage(1999–2008),and the Integrated and Diverse Development Stage(2009–2018).Overall,the development of quantitative methods in Chinese educational research shows sustained innovation in numerous aspects,including research methods,data sources,utilization of advancements in computing technology and statistical software,and research topics.However,despite the relatively advanced state of quantitative methods,education measurement and evaluation require further attention.The questionnaire and experimental research data currently available indicate the need to improve the mining and utilization of big data.Moreover,while Chinese educational researchers have demonstrated their proficiency in using quantitative research methods,improvements remain to be made with respect to collaboration and sharing.Originality/Value:This article is the first to analyze systemically the development of quantitative methods in Chinese educational research.It provides an original summary of the development and characteristics of quantitative methods in educational research in China.
