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学者姓名：李京文
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Abstract ：
Heterostructural materials have the advantage of extreme low switching energy between states and hence are expected to be applied in photonic devices, whose optical performances are vital to explore in advance. In this paper, crystal structures of TiTe2/Sb2Te3 heterostructural films and their effects on optical properties were clarified from the aspects of in-plane strain, resonant bonding and charge redistribution by experiments and first principle simulations. Larger strain in Sb2Te3 sublayer tended to decrease reflectivity and refractive indexes, while huge resonant bonding effect was beneficial to improve the optical parameter deviations. Charge analyses showed that crystalline optical property variations were actually deriving from the electron redistribution differences especially near the heterostructural Te center dot center dot center dot Te gap, which also accounted for experimental reflectivity order. Finally, based on the resonant bond effects and surrounding electron density after stimuluses, five optical levels with identifiable optical contrasts (n and Delta R) were achieved in 1/2 model for uses. The present study sheds new light on optical properties of TiTe2/Sb2Te3 and paves the way for potential multi-state applications of heterostructure in photonic and storage devices. (C) 2021 Elsevier B.V. All rights reserved.
Keyword ：
First principle simulation First principle simulation Optical properties Optical properties Heterostructure Heterostructure Charge distribution Charge distribution
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| GB/T 7714 | Han, Gang , Liu, Furong , Zhang, Yongzhi et al. Effect of structure architecture on optical properties of TiTe2/Sb2Te3 multilayer nanofilms [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 877 . |
| MLA | Han, Gang et al. "Effect of structure architecture on optical properties of TiTe2/Sb2Te3 multilayer nanofilms" . | JOURNAL OF ALLOYS AND COMPOUNDS 877 (2021) . |
| APA | Han, Gang , Liu, Furong , Zhang, Yongzhi , Li, Jingwen , Li, Wenqiang , Chen, Qingyuan et al. Effect of structure architecture on optical properties of TiTe2/Sb2Te3 multilayer nanofilms . | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 877 . |
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In recent years, the research and application of blockchain applied in e-government has been increasing. The characteristics of blockchain, such as non-tamper, verifiable and inspirable, have been well applied in confirming the rights, accountability, and assessment of government data resources, and other unresolved problems over the years. Well, the decentralized feature is naturally inconsistent with the strong central feature of the government so that the application of common blockchain technology in e-government cannot support the government regulatory mechanism effectively. To solve this problem, this paper proposes a strong supervision model of blockchain based on the Threshold Ring Signature algorithm (TRS). Further experiments show that the process and results of signature voting by using this model. Compared with the common blockchain, the strong supervision model can control the error rate of the chain information and increase the flexibility of blockchain so as to enhance the integration application of blockchain and e-government. © 2020 IEEE.
Keyword ：
Blockchain Blockchain e-government e-government
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| GB/T 7714 | Lin, Shaofu , Li, Jingwen , Liang, Wei . Research on Strong Supervision Algorithm Model Based on Blockchain in E-government [C] . 2020 : 345-349 . |
| MLA | Lin, Shaofu et al. "Research on Strong Supervision Algorithm Model Based on Blockchain in E-government" . (2020) : 345-349 . |
| APA | Lin, Shaofu , Li, Jingwen , Liang, Wei . Research on Strong Supervision Algorithm Model Based on Blockchain in E-government . (2020) : 345-349 . |
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Abstract ：
In recent years, the research and application of blockchain applied in e-government has been increasing. The characteristics of blockchain, such as non-tamper, verifiable and inspirable, have been well applied in confirming the rights, accountability, and assessment of government data resources, and other unresolved problems over the years. Well, the decentralized feature is naturally inconsistent with the strong central feature of the government so that the application of common blockchain technology in e-government cannot support the government regulatory mechanism effectively. To solve this problem, this paper proposes a strong supervision model of blockchain based on the Threshold Ring Signature algorithm (TRS). Further experiments show that the process and results of signature voting by using this model. Compared with the common blockchain, the strong supervision model can control the error rate of the chain information and increase the flexibility of blockchain so as to enhance the integration application of blockchain and e-government.
Keyword ：
strong supervision model strong supervision model e-government e-government Blockchain Blockchain Threshold Ring Signature Threshold Ring Signature
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| GB/T 7714 | Lin, Shaofu , Li, Jingwen , Liang, Wei . Research on Strong Supervision Algorithm Model Based on Blockchain in E-government [C] . 2020 : 345-349 . |
| MLA | Lin, Shaofu et al. "Research on Strong Supervision Algorithm Model Based on Blockchain in E-government" . (2020) : 345-349 . |
| APA | Lin, Shaofu , Li, Jingwen , Liang, Wei . Research on Strong Supervision Algorithm Model Based on Blockchain in E-government . (2020) : 345-349 . |
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技术进步是实现跨越式的经济增长和产业升级的重要手段之一.本文深入研究了智能手机产业2010-2017年的技术进步问题,对产业内三星、苹果、华为、小米、OP-PO、VIVO、中兴、魅族、HTC、联发科和高通这些具有代表性的重要企业进行调查后,构建了适用智能手机产业发展的评价体系,之后采用面板数据模型对所搜集到的数据进行实证分析,得出技术进步对智能手机产业发展的贡献.研究发现:(1)技术进步投入对产业发展指数的影响系数达1.78,说明技术进步对智能手机产业的发展具有正向推动作用;(2)相比其他技术进步因素,专利申请量对产业发展指数的影响较弱;(3)资本投入对产业发展指数的影响系数达0.257,继续投入资本有利于产业的发展.
Keyword ：
智能手机产业 智能手机产业 面板数据 面板数据 产业政策 产业政策 评价体系 评价体系 技术进步 技术进步
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| GB/T 7714 | 李京文 , 杨正东 , 杜时雨 . 技术进步对智能手机产业发展影响研究 [J]. | 价格理论与实践 , 2019 , (4) : 21-24 . |
| MLA | 李京文 et al. "技术进步对智能手机产业发展影响研究" . | 价格理论与实践 4 (2019) : 21-24 . |
| APA | 李京文 , 杨正东 , 杜时雨 . 技术进步对智能手机产业发展影响研究 . | 价格理论与实践 , 2019 , (4) , 21-24 . |
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文章从产业集聚区的视角着手,构建了一套汽车产业集聚区竞争力评价指标体系,采用主成分分析法和AHP层次分析法分析各产业集聚区以及其各自组成省份的汽车产业竞争力,结果发现长三角地区和中部地区汽车产业竞争力最强,京津冀地区和珠三角地区次之,东北地区和西部地区最弱。之后利用两种分析法分别计算出各指标的权重,结果显示:我国汽车产业已基本形成适宜的规模,需要在未来加大运营管理和研发力度。
Keyword ：
AHP层次分析法 AHP层次分析法 产业集聚区 产业集聚区 主成分分析 主成分分析 产业竞争力 产业竞争力
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| GB/T 7714 | 李京文 , 杜时雨 , 杨正东 . 我国主要汽车产业集聚区竞争力分析 [J]. | 统计与决策 , 2019 , 35 (01) : 133-137 . |
| MLA | 李京文 et al. "我国主要汽车产业集聚区竞争力分析" . | 统计与决策 35 . 01 (2019) : 133-137 . |
| APA | 李京文 , 杜时雨 , 杨正东 . 我国主要汽车产业集聚区竞争力分析 . | 统计与决策 , 2019 , 35 (01) , 133-137 . |
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Abstract ：
在创新资源有限的情况下,如何在机器人系统集成、机器人本体、关键零部件等产业链各领域合理分配创新资源,是亟待解决的关键问题.基于系统动力学模型建立了工业机器人产业发展模型,并以实际数据对机器人产业不同领域发展进行了仿真分析.研究发现,工业机器人产业发展初期,产业政策支持重点应以系统集成为主,机器人本体和关键零部件发展为辅;在后期,机器人本体领域发展逐渐超过系统集成领域,在此阶段,应以机器人本体和关键零部件为主,系统集成为辅.
Keyword ：
产业发展路径 产业发展路径 系统动力学 系统动力学 机器人产业 机器人产业
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| GB/T 7714 | 李京文 , 韩行 . 基于系统动力学的工业机器人产业发展路径研究 [J]. | 东北大学学报（社会科学版） , 2019 , 21 (2) : 132-138 . |
| MLA | 李京文 et al. "基于系统动力学的工业机器人产业发展路径研究" . | 东北大学学报（社会科学版） 21 . 2 (2019) : 132-138 . |
| APA | 李京文 , 韩行 . 基于系统动力学的工业机器人产业发展路径研究 . | 东北大学学报（社会科学版） , 2019 , 21 (2) , 132-138 . |
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在京津冀协同发展上升为国家战略的背景下,检验京津冀城市群不同城市间的经济增长关系,厘清大城市是否有利于小城市经济增长,对于打赢脱贫攻坚战具有重要意义。以京津冀128个县级小城市为例,在传统经济增长模型中加入大城市地理距离、行政边界、产业结构等因素,估计不同等级大城市对小城市经济增长的空间影响及其异质性。研究发现:核心城市抑制了周边小城市经济增长,存在集聚阴影和"环京津贫困带";小城市之间也存在经济增长负面溢出效应;与长三角城市群相比,京津冀城市群内核心城市辐射和带动功能明显不足,区内城市间发展差距大。最后,从破除行政区经济束缚、强化中心城市辐射溢出效应、科学界定各级城市功能等方面提出了促进大中...
Keyword ：
集聚阴影 集聚阴影 空间作用 空间作用 京津冀城市群 京津冀城市群 环京津贫困带 环京津贫困带
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| GB/T 7714 | 李京文 , 池绍杰 . 新时代大城市对周边中小城市经济增长的影响 [J]. | 科技进步与对策 , 2019 , 36 (14) : 31-37 . |
| MLA | 李京文 et al. "新时代大城市对周边中小城市经济增长的影响" . | 科技进步与对策 36 . 14 (2019) : 31-37 . |
| APA | 李京文 , 池绍杰 . 新时代大城市对周边中小城市经济增长的影响 . | 科技进步与对策 , 2019 , 36 (14) , 31-37 . |
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发展引领产业变革的颠覆性技术,不断催生新型战略性新兴产业是我国当前创新驱动和军民融合的国家战略下的必然选择。文章试图结合相关领域的最新研究,从军民融合的新视角分析颠覆性技术创新对战略性新兴产业发展,将军民融合贯穿于从颠覆性技术创新到新兴产业形成的整个过程,找寻出颠覆性技术与战略性新兴产业两者之间的机理机制,对促进我国新型战略性新兴产业的培育、形成和发展给予理论指导。
Keyword ：
新兴产业 新兴产业 军民融合 军民融合 颠覆性技术 颠覆性技术 产业变革 产业变革
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| GB/T 7714 | 汤文仙 , 李京文 . 基于颠覆性技术创新的战略性新兴产业发展机理研究 [J]. | 技术经济与管理研究 , 2019 , (06) : 95-99 . |
| MLA | 汤文仙 et al. "基于颠覆性技术创新的战略性新兴产业发展机理研究" . | 技术经济与管理研究 06 (2019) : 95-99 . |
| APA | 汤文仙 , 李京文 . 基于颠覆性技术创新的战略性新兴产业发展机理研究 . | 技术经济与管理研究 , 2019 , (06) , 95-99 . |
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Biofilm nitrification and activated sludge denitrifying phosphorus removal performance were investigated in the pre-A2 NSBR system, which treated real low carbon to nitrogen (C/N) ratio domestic sewage. The effect of organic substance and NO2 --N concentration on the biofilm nitrification performance, and different electronic acceptors on the denitrifying phosphorus uptake rate were studied. Results indicated that nitrification rate was 11.3 mgNH4 +-N/(L•h), the ammonia volume loading was 0.27 kgNH4 +-N/(m³•d) under the filling rate of 40%, the nitrification performance was inhibited by organic substance, but the system showed a good nitrification rate of 9.72 mg NH4 +-N/(L•h) when organics presented. NO2 --N treatment exhibited little effect on the AOB activity but obvious effect on the NOB activity, the NOB activity was almost completely inhibited (only 1.63%) when NO2 --N concentration was 400mg/L. According to the phosphorus uptake rate experiment under different electronic acceptors, the phosphorus uptake rate under oxygen and NO3 --N was 17.62mg P/(g VSS•h) and 12.94mg P/(g VSS•h), respectively, anoxic phosphate accumulating organisms (PAOs) occupied 73.4% of the total PAOs, phosphorus uptake performance was inhibited when the NO2 --N concentration was 30mg/L, and phosphorus uptake performance was inhibited when the NO2 --N concentration was 15mg/L under the condition of NO2 --N and NO3 --N coexisted. © 2019, Editorial Board of China Environmental Science. All right reserved.
Keyword ：
Denitrifying phosphorus removal; Low C/N ratio; Nitrification; NO2 --N inhibition; Pre-A2NSBR process Denitrifying phosphorus removal; Low C/N ratio; Nitrification; NO2 --N inhibition; Pre-A2NSBR process
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| GB/T 7714 | Zhao, W.-H. , Li, J.-W. , Wang, M.-X. et al. Nitrification and denitrifying phosphorus removal performance in the pre-A2 NSBR system [前置A2NSBR系统硝化和反硝化除磷的特性] [J]. | China Environmental Science , 2019 , 39 (11) : 4660-4665 . |
| MLA | Zhao, W.-H. et al. "Nitrification and denitrifying phosphorus removal performance in the pre-A2 NSBR system [前置A2NSBR系统硝化和反硝化除磷的特性]" . | China Environmental Science 39 . 11 (2019) : 4660-4665 . |
| APA | Zhao, W.-H. , Li, J.-W. , Wang, M.-X. , Huang, Y. , Feng, Y. , Li, X.-Y. et al. Nitrification and denitrifying phosphorus removal performance in the pre-A2 NSBR system [前置A2NSBR系统硝化和反硝化除磷的特性] . | China Environmental Science , 2019 , 39 (11) , 4660-4665 . |
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This study examined the difference of ammonium adsorption by molecular sieve with different silica-alumina ratios that were determined using x-rays fluorescence (XRF) method. Based on the results from scanning electron microscopy (SEM) and X-ray diffraction (XRF), It was investigated the adsorption mechanism of molecular sieve under different silica-alumina ratio conditions from the perspective of molecular sieve framework, surface morphology, and crystal structure. Meanwhile, the ammonium adsorption improvement through the desilicification of molecular sieve framework was revealed, and this would provide technical reference for the molecular sieve based deep denitrification of sewage treatment plant effluent. The results indicated that molecular sieves with different silica-alumina ratio had significant variation in surface morphology, crystal structure, and ammonium adsorption performance. It was found that the increased silica-alumina ratio was associated with decreased crystallization, increased obscuring of crystal grain shape, and decreased adsorption capacity. When the silica-alumina ratio rose from 35 to 237, the equilibrium adsorption capacity of ammonium by molecular sieve decreased from 5.65mg/g to 0.41mg/g, and the monolayer adsorption saturation capacity confirmed by Langmuir adsorption isotherm decreased from 6.5963mg/g to 0.4430mg/g. The adsorption process conformed to the pseudo-second-order kinetic model, which was revealed that the adsorption rate was controlled by the mechanism of ion-exchange chemical adsorption. Both the ion-exchange capacity of molecular sieve and the rate of adsorption decreased with the increase in silica-alumina ratio. It was observed that the ability of ammonium absorption was significantly improved by desilicification process of molecular sieve framework, and the equilibrium ammonium adsorption with a silica-alumina ratio of 35increased by 81.6% after a desilicification process. This would provide an effective technological approach for improving the ammonium adsorption by molecular sieve. © 2019, Editorial Board of China Environmental Science. All right reserved.
Keyword ：
Adsorption; Ammonium; Desilicification; Molecular sieve; Silica-alumina ratio Adsorption; Ammonium; Desilicification; Molecular sieve; Silica-alumina ratio
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| GB/T 7714 | Liu, S.-Y. , Hao, R.-X. , Liu, H. et al. Impact of silica-alumina ratio on ammonium adsorption by molecular sieves [硅铝比对分子筛吸附氨氮性能的影响] [J]. | China Environmental Science , 2019 , 39 (3) : 1026-1033 . |
| MLA | Liu, S.-Y. et al. "Impact of silica-alumina ratio on ammonium adsorption by molecular sieves [硅铝比对分子筛吸附氨氮性能的影响]" . | China Environmental Science 39 . 3 (2019) : 1026-1033 . |
| APA | Liu, S.-Y. , Hao, R.-X. , Liu, H. , Wang, L.-S. , Li, J.-W. . Impact of silica-alumina ratio on ammonium adsorption by molecular sieves [硅铝比对分子筛吸附氨氮性能的影响] . | China Environmental Science , 2019 , 39 (3) , 1026-1033 . |
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