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C/C-ZrC-SiC复合材料的Si^(2+)离子辐照行为

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材料研究学报 2023年第6期37卷 472-480页

作者：邵萌萌陈招科熊翔曾毅王铎王徐辉中南大学粉末冶金研究院轻质高强结构材料国家级重点实验室长沙410083

用强度为2 MeV的Si^(2+)离子对C/C-ZrC-SiC复合材料进行室温辐照,使用掠入射X射线衍射、拉曼光谱、透射电子显微分析、扫描电子显微分析和纳米压痕等手段研究了辐照前后C/C-ZrC-SiC复合材料的晶体结构、晶格损伤、微观组织结构、表面形... 详细信息

用强度为2 MeV的Si^(2+)离子对C/C-ZrC-SiC复合材料进行室温辐照,使用掠入射X射线衍射、拉曼光谱、透射电子显微分析、扫描电子显微分析和纳米压痕等手段研究了辐照前后C/C-ZrC-SiC复合材料的晶体结构、晶格损伤、微观组织结构、表面形貌及显微力学性能的变化。结果表明:Si^(2+)离子辐照后SiC晶格中产生的应力使晶格膨胀,而ZrC晶格未发生膨胀;辐照后SiC的拉曼峰宽化和偏移在Si-C区域形成新峰,离子辐照诱导ZrC出现的碳空位使其具有拉曼活性,从而出现特征峰;辐照后C/C-ZrC-SiC复合材料的表面形貌没有显著的变化,而ZrC和SiC中碳的原子含量分别提高了37.93%和13.03%;辐照使ZrC中出现大量的间隙缺陷团簇和SiC部分非晶化,且在ZrC与SiC晶粒的交界处出现完全非晶化区域;碳纤维中碳相的ID/IG值与石墨微晶的层面间距增大,热解碳的层状结构被破坏逐渐呈无序化;ZrC、SiC和碳纤维的纳米硬度和弹性模量增大,ZrC的变化最小表明其具有更高的稳定性。

关键词：复合材料 C/C-ZrC-SiC 离子辐照晶格缺陷非晶化微观力学性能

专门带货还是分享带货:网红直播类型与产品类型的交互作用对消费者购买意愿的影响

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财经论丛 2023年第5期 78-90页

作者：汪旭晖王佳淏乌云东北财经大学工商管理学院辽宁大连116025

专门带货型直播和分享带货型直播哪种方式能带来更好的营销绩效呢?本文通过四个情境实验,探讨了网红直播类型对消费者购买意愿的影响机制和边界条件。研究发现:网红直播类型与产品类型的交互作用对购买意愿产生影响。具体来说,当消费者... 详细信息

专门带货型直播和分享带货型直播哪种方式能带来更好的营销绩效呢?本文通过四个情境实验,探讨了网红直播类型对消费者购买意愿的影响机制和边界条件。研究发现:网红直播类型与产品类型的交互作用对购买意愿产生影响。具体来说,当消费者购买实用品时,专门带货型直播更能促进消费者的购买意愿;当消费者购买享乐品时,分享带货型直播更能促进消费者的购买意愿;信息加工流畅性在上述关系中起中介作用,上述匹配关系通过增强消费者的信息加工流畅性进而促进购买意愿;网红直播类型与产品类型的匹配效应是否有效取决于消费者的专业知识水平。研究结论细化了网红直播类型的分类,丰富了网络营销相关领域的文献,对企业开展精准营销具有指导意义。

关键词：专门带货型直播分享带货型直播网络营销消费者购买意愿

Preparation and characteristic study of Schottky diodes based on GaOthin films

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The Journal of China Universities of Posts and Telecommunications 2024年

作者： Zhang xuhui Chen Haifeng Liu Xiangtai Lu Qin wang Zhan Cheng Hang Che Lujie Guan Youyou Han Xiaocong School of Electronic Engineering Xi’an University of Posts and Telecommunications

This study uses atomic layer deposition (ALD) to grow Ga2O3films on SiO2substrates and investigates the influence of film thickness and annealing temperature on film quality. Schottky diode devices are fabricated based on the grown Ga2O3films， and the effects of annealing temperature， electrode size， and electrode spacing on the electrical characteristics of the devices are studied. The results show that as the film thickness increases， the breakdown voltage of the fabricated devices also increases. A Schottky diode with a thickness of 240 nm can achieve a reverse breakdown voltage of 300 V. The film quality significantly improves as the annealing temperature of the film increases. At a voltage of 5 V， the current of the film annealed at 900℃ is 64 times that of the film annealed at 700℃. The optimum annealing temperature for Ohmic contact electrodes is 450℃. At 550℃， the Ohmic contact metal tends to burn， and the performance of the device is reduced. Reducing the electrode spacing increases the forward current of the device but decreases the reverse breakdown voltage. Increasing the Schottky contact electrode size increases the forward current， but the change is not significant， and there is no significant change in the reverse breakdown voltage. The device also performs well at high temperatures， with a reverse breakdown voltage of 220 V at 125℃.

关键词：

乡村振兴进程中农村低收入人口常态化帮扶机制研究

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长白学刊 2023年第5期 131-140页

作者：李卓王旭慧西北农林科技大学人文社会发展学院陕西杨凌712100 西北农林科技大学黄河流域乡村振兴研究与评估中心陕西杨凌712100

在巩固拓展脱贫攻坚成果同乡村振兴有效衔接的阶段,加快构建农村低收入人口常态化帮扶机制对有效防范规模性返贫、全面推进乡村振兴和促进农民生活共同富裕具有重要意义。本文通过对脱贫攻坚与乡村振兴帮扶对象、治理目标和治理模式的比... 详细信息

在巩固拓展脱贫攻坚成果同乡村振兴有效衔接的阶段,加快构建农村低收入人口常态化帮扶机制对有效防范规模性返贫、全面推进乡村振兴和促进农民生活共同富裕具有重要意义。本文通过对脱贫攻坚与乡村振兴帮扶对象、治理目标和治理模式的比较,本文认为在脱贫攻坚转换到乡村振兴的情境下,应加快构建农村低收入人口常态化帮扶机制。研究发现:第一,在脱贫攻坚时期帮扶对象主要聚焦于绝对贫困人口,而在全面推进乡村振兴的进程中帮扶对象将转变为农村低收入人口,其治理目标也将从消除绝对贫困转变为促进农民农村共同富裕;第二,在治理目标发生重大转变的前提下,帮扶机制要做出适应性调整,从超常规治理转向常规治理,以实现对农村低收入人口的常态化治理;第三,乡村振兴进程中农村低收入人口的治理,需要从完善收入分配制度、落实就业优先战略、健全社会保障体系和促进基本公共服务均等化四个方面着手构建农村低收入人口的常态化帮扶机制。

关键词：脱贫攻坚乡村振兴农村低收入人口长效帮扶机制

互联网平台型电商企业的在线声誉治理机制:逻辑理路与实现路径

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当代经济管理 2023年第1期45卷 18-28页

作者：汪旭晖李晶东北财经大学工商管理学院辽宁大连116025

互联网平台型电商企业作为一种新的商业模式在推进零售产业变革,带动社会经济增长的同时也因自身虚拟组织架构加剧了平台型网络市场中的信息不对称问题。研究基于对在线声誉研究的全面回顾与系统梳理,发现在线声誉作为信息披露与信息传... 详细信息

互联网平台型电商企业作为一种新的商业模式在推进零售产业变革,带动社会经济增长的同时也因自身虚拟组织架构加剧了平台型网络市场中的信息不对称问题。研究基于对在线声誉研究的全面回顾与系统梳理,发现在线声誉作为信息披露与信息传递工具可以有效缓解平台型网络市场中的信息不对称问题。通过对互联网平台型电商企业在线声誉治理机制进行深入分析,研究提出互联网平台型电商企业的在线声誉治理机制是声誉规则体系与治理对象的相互匹配、声誉治理策略与经营行为的灵活调整、声誉治理效能与用户参与的协同演进、声誉治理强度与平台发展的动态均衡。

关键词：互联网平台型电商企业在线声誉治理机制平台型网络市场

Electromyographic evaluation of functional electrical stimulation to injured oculomotor nerve

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Neural Regeneration Research 2011年第11期6卷 870-875页

作者： Min Yang Youqiang Meng Ningxi Zhu xuhui wang Liang Wan Wenchuan Zhang JunZhong Shugan Zhu Massimiliano Visocchi Shiting Li Department of Neurosurgery Xinhua Hospital of Shanghai Jiao Tong University Shanghai 200092 China Department of Neurosurgery Central Hospital of Taian City Taian 271000 Shandong Province China Institute of Neurosurgery Catholic University Medical School Policlinico Gemelii Largo Gemelli Rome Italy

Functional electrical stimulation delivered early after injury to the proximal nerve stump has been proposed as a therapeutic approach for enhancing the speed and specificity of axonal regeneration following nerve injury. In this study, the injured oculomotor nerve was stimulated functionally by an implantable electrode. Electromyographic monitoring of the motor unit potential of the inferior oblique muscle was conducted for 12 weeks in two injury groups, one with and one without electric stimulation. The results revealed that, at 2, 4, 6, 8 weeks after functional electric stimulation of the injured oculomotor nerve, motor unit potentials significantly increased, such that amplitude was longer and spike duration gradually shortened. These findings indicate that the injured oculomotor nerve has the potential for regeneration and repair, but this ability is not sufficient for full functional recovery to occur. Importantly, the current results indicated that recovery and regeneration of the injured oculomotor nerve can be promoted with functional electrical stimulation.

关键词： electrical stimulation electromyogram oculomotor nerve motor unit potential injury evaluation neural regeneration

平台型电商声誉向平台卖家声誉的转移机制研究:基于拓展学习迁移理论的分析

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管理世界 2022年第12期38卷 143-158,219页

作者：张其林汪旭晖东北财经大学工商管理学院

在平台交易过程中,买家不仅会选择高声誉卖家,而且会选择高声誉平台型电商。但是,以往研究重点关注了卖家声誉的信号效应,却忽视了平台型电商声誉的晕轮效应。为此,本文对学习迁移理论进行了拓展,并以此为理论基础,建构了平台型电商声... 详细信息

在平台交易过程中,买家不仅会选择高声誉卖家,而且会选择高声誉平台型电商。但是,以往研究重点关注了卖家声誉的信号效应,却忽视了平台型电商声誉的晕轮效应。为此,本文对学习迁移理论进行了拓展,并以此为理论基础,建构了平台型电商声誉向平台卖家声誉的转移机制,试图据此解构平台型电商声誉的晕轮效应。实验研究和问卷研究的结果表明:平台型电商声誉的4个维度通过不同的机制向平台卖家声誉转移,具体来说,企业认知声誉和卖方整体认知声誉分别通过平台市场制度信任和平台购物效能感向卖家认知声誉转移,企业情感声誉和卖方整体情感声誉则分别通过平台品牌认同和平台市场认同向卖家情感声誉转移;并且,平台市场制度信任和平台购物效能感在企业认知声誉向卖家认知声誉转移过程中发挥链式中介作用,平台市场认同和平台品牌认同在卖方整体情感声誉向卖家情感声誉转移过程中发挥链式中介作用。以上结论既为考察平台卖家的绩效差异提供了系统的理论框架,也为探索平台情境下的营销变革提供了崭新的研究视角,还为验证本文建构的拓展学习迁移理论架构提供了扎实的实证证据。

关键词：拓展学习迁移理论平台型电商声誉企业声誉卖方整体声誉声誉转移机制

The Levels-Recursive Algorithm for Vector Valued Interpolants by Triple Branched Continued Fractions

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Numerical Mathematics A Journal of Chinese Universities(English Series) 2006年第2期15卷 137-142页

作者： Shuo Tang xuhui wang Department of Mathematics Hefei University of Technology Hefei Anhui 230009 China Department of Mathematics University of Science and Technology of China Hefei Anhui 230026 China

A kind of triple branched continued fractions is defined by making use of Samel- son inverse and Thiele-type partial inverted di?erences [1]. In this paper, a levels-recursive algorithm is constructed and a numerical ... 详细信息

关键词： Levels-Recursive算法向量估计连分数部分逆

A standardized method to create peripheral nerve injury in dogs using an automatic non-serrated forceps

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Neural Regeneration Research 2012年第32期7卷 2516-2521页

作者： xuhui wang Liang Wan Xinyuan Li Youqiang MenG Ningxi Zhu Min Yang Baohui Feng Wenchuan Zhang Shugan Zhu Shiting Li Department of Neurosurgery Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China The Cranial Nerve Disease Center of Shanghai Shanghai 200092 China

This study describes a method that not only generates an automatic and standardized crush injury in the skull base, but also provides investigators with the option to choose from a range of varying pressure revels. We designed an automatic, non-serrated forceps that exerts a varying force of 0 to 100 g and lasts for a defined period of 0 to 60 seconds. This device was then used to generate a crush injury to the right oculomotor nerve of dogs with a force of 10 g for 15 seconds, resulting in a deficit in the pupil-light reflex and ptosis. Further testing of our model with Toluidine-blue staining demonstrated that, at 2 weeks post-surgery disordered oculomotor nerve fibers, axonal loss, and a thinner than normal myelin sheath were visible. Electrophysiological examination showed occasional spontaneous potentials. Together, these data verified that the model for oculomotor nerve injury was successful, and that the forceps we designed can be used to establish standard mechanical injury models of peripheral nerves.

关键词： oculomotor nerve forceps instrument nerve injury model quantitation cranial nerve peripheral nerve neural regeneration