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基于纵向数据的ZIP和ZIB非线性回归模型的随机效应存在性检验(英文)
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作者 谢建春 林金官 王俐莉 《数学杂志》 CSCD 北大核心 2010年第2期191-198,共8页
本文研究了基于纵向数据的ZIP和ZIB模型的随机效应存在性检验问题.采用score检验方法,得到了可用矩阵表示的score检验统计量.最后,用一个数据实例说明检验方法的有效性.
关键词 ZIP模型 ZIB模型 SCORE检验 随机效应
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基于BREW的FLASH动画的实现
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作者 叶锋 《电脑知识与技术》 2006年第7期126-128,共3页
FLASH在网络上很风行,而随着3G手机的推出,如何将互联网上的精彩FLASH展现在具有brew平台的手机上,就是非常值得探讨的问题。本文基于BREW的FLASH动画实现的方法进行了分析、研究,给出了对FLASH文件信息按照bitmap组合的原理和规则... FLASH在网络上很风行,而随着3G手机的推出,如何将互联网上的精彩FLASH展现在具有brew平台的手机上,就是非常值得探讨的问题。本文基于BREW的FLASH动画实现的方法进行了分析、研究,给出了对FLASH文件信息按照bitmap组合的原理和规则,使用cairo工具包解决了矢量信息向象素信息转换和绘制。通过实现原型系统验证了该方法的可行性和有效性。 展开更多
关键词 BREW FALSH ZIB
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Progress in research on metal-based materials in stabilized Zn anodes 被引量:5
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作者 Le Li Shao-Feng Jia +3 位作者 Ming-Hui Cao Yong-Qiang Ji Heng-Wei Qiu Dan Zhang 《Rare Metals》 SCIE EI CAS CSCD 2024年第1期20-40,共21页
Aqueous zinc-ion batteries(ZIBs) combine the benefits of metallic Zn anodes with those of aqueous electrolytes and are well suited for large-scale energy storage because of their inherent high safety, cost-effectivene... Aqueous zinc-ion batteries(ZIBs) combine the benefits of metallic Zn anodes with those of aqueous electrolytes and are well suited for large-scale energy storage because of their inherent high safety, cost-effectiveness, and eco-friendliness. Currently, the practical application of such batteries is hindered by the poor cycling performance of Zn anodes due to uncontrolled dendrite formation and severe side reactions, although recent reports suggest that these problems can be mitigated through the modification of Zn anodes with metal-based materials.Given that the mechanisms of improving Zn deposition and the structural evolution of metal-based materials have not been systematically reviewed, we herein systematically overview the metal-based materials used to stabilize Zn anodes, starting with a brief summary of the anode working mechanism and the challenges faced by stabilized Zn anodes. Subsequently, the design principles of Zn anodes stabilized by metal-based materials and the related recent progress are reviewed, and the key challenges and perspectives for the future development of such Zn anodes are proposed. 展开更多
关键词 Zinc-ion batteries(zibs) Zn anode Metalbased materials Alloying metal Stabilized Zn anodes
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Research progress of“rocking chair”type zinc-ion batteries with zinc metal-free anodes 被引量:1
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作者 Le Li Shaofeng Jia +3 位作者 Minghui Cao Yongqiang Ji Hengwei Qiu Dan Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第12期42-52,共11页
"Rocking chair"type lithium-ion batteries with lithium metal-free anodes have been successfully com-mercialized over the past few decades.Zinc-ion batteries(zIBs)have gained increasing attention in recent ye... "Rocking chair"type lithium-ion batteries with lithium metal-free anodes have been successfully com-mercialized over the past few decades.Zinc-ion batteries(zIBs)have gained increasing attention in recent years given their safety,greenness,ease of manufacture,and cost-efficiency.Nevertheless,the practical application of ZIBs is largely hindered by the dendritic growth of the Zn metal anode,low Coulombic eficiency,great harm,and existence of various side reactions.Herein,this review provides a systematic overview of emerging"rocking chair"type ZIBs with zinc metal-free anodes.Firstly,the basic fundamen-tals,advantages,and challenges of“rocking chair”type ZIBs are introduced.Subsequently,an overview of the design principles and recent progress of"rocking chair"type ZIBs with zinc metal-free anodes are presented.Finally,the key challenges and perspectives for future advancement of"rocking chair"type ZiBs with zinc metal-free anodes are proposed.This review is anticipated to attracted increased focus to metal-free anodes"rocking chair"type metal-ion battery and provide new inspirations for the develop-ment of high-energy metal-ion batteries. 展开更多
关键词 Zinc ion batteries(zibs) "Rocking chair"type Zinc metal-free anode Transition metal dichalcogenides Transition metal oxides Organic compounds
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Challenges and perspectives for manganese-based oxides for advanced aqueous zinc-ion batteries 被引量:32
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作者 Yinlei Zhao Yunhai Zhu Xinbo Zhang 《InfoMat》 SCIE CAS 2020年第2期237-260,共24页
Li-ion batteries(LIBs)with excellent cycling stability and high-energy densities have already occupied the commercial rechargeable battery market.Unfortunately,the high cost and intrinsic insecurity induced by organic... Li-ion batteries(LIBs)with excellent cycling stability and high-energy densities have already occupied the commercial rechargeable battery market.Unfortunately,the high cost and intrinsic insecurity induced by organic electrolyte severely hinder their applications in large-scale energy storage.In contrast,aqueous Zn-ion batteries(ZIBs)are being developed as an ideal candidate because of their cheapness and high security.Benefiting from high operating voltage and acceptable specific capacity,recently,manganese-based oxides with different various crystal structures have been extensively studied as cathode materials for aqueous ZIBs.This review presents research progress of manganese-based cathodes in aqueous ZIBs,including various manganese-based oxides and their zinc storage mechanisms.In addition,we also discuss some optimization strategies that aim at improving the electrochemical performance of manganese-based cathodes,and the design of flexible aqueous ZIBs based on manganese-based cathodes(MZIBs).Finally,this review summarizes some valuable research directions,which will promote the further development of aqueous MZIBs. 展开更多
关键词 flexible zibs manganese dioxide manganese-based oxides STRATEGIES zibs
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