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新创企业资源获取如何转化为创新绩效：一个有中介的调节作用模型

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科学学与科学技术管理 2021年第10期42卷 139-158页

作者：吕斯尧赵文红杨特王玲玲西安交通大学管理学院郑州航空工业管理学院商学院

资源获取有利于弥补新创企业的资源约束,是企业进行创新的基础。但资源编排视角认为,企业将所获取的资源有效转化为创新绩效,还需要创业者的决策逻辑(因果逻辑和效果逻辑)推动资源的后续整合和利用。因果逻辑和效果逻辑都反映了创业者... 详细信息

资源获取有利于弥补新创企业的资源约束,是企业进行创新的基础。但资源编排视角认为,企业将所获取的资源有效转化为创新绩效,还需要创业者的决策逻辑(因果逻辑和效果逻辑)推动资源的后续整合和利用。因果逻辑和效果逻辑都反映了创业者的行为理性和决策风格,它们影响着形成创新的资源编排过程,从而在资源获取和创新绩效之间的正向关系中发挥着调节作用。然而,因果逻辑和效果逻辑的调节作用存在一定的差异。两种决策风格分别反映了创业者的"计划导向"和"权变导向",在资源编排过程中的目标、策略、风险和得失等方面均不尽相同,从而导致对资源获取和创新绩效之间正向关系的调节作用方式有所不同。研究通过引入机会形成作为中介变量,构建了一个有中介的调节作用模型,除了直接调节效应之外,还探讨了因果逻辑和效果逻辑的间接调节效应,以全面分析因果逻辑和效果逻辑如何影响资源获取转化为创新绩效的过程,充分说明创业者的决策逻辑在资源编排过程中的作用。研究通过对197位创业者及其所创办的企业进行问卷调研,结果表明,因果逻辑无法直接促进资源获取与创新绩效间的正向关系,需要在企业机会形成的作用下,通过间接的调节效应促进资源获取转化为创新绩效;而效果逻辑既可以直接促进资源获取对创新绩效的正向影响,又可以通过机会形成间接促进资源获取对创新绩效的提升。

关键词：资源获取因果逻辑效果逻辑机会形成创新绩效

刷牙时间对青少年正畸患者口腔健康状况的影响及其临床意义

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吉林大学学报（医学版） 2017年第2期43卷 375-380页

作者：王特包幸福杨军星刘少伟于航胡敏吉林大学口腔医院正畸科吉林长春130021 吉林省牙发育及颌骨重塑与再生重点实验室吉林长春130021

目的:统计青少年正畸患者的刷牙时长,检测不同刷牙时长下各项口腔健康指数的变化,探讨正畸患者最适刷牙时长,为正畸医师临床口腔卫生宣教提供依据。方法:共纳入123例青少年正畸患者,通过统计《正畸矫治期间刷牙时间记录回执》的数据,将... 详细信息

目的:统计青少年正畸患者的刷牙时长,检测不同刷牙时长下各项口腔健康指数的变化,探讨正畸患者最适刷牙时长,为正畸医师临床口腔卫生宣教提供依据。方法:共纳入123例青少年正畸患者,通过统计《正畸矫治期间刷牙时间记录回执》的数据,将患者刷牙时长分为1~3min、3~5min、5~7min和7~10min4组,选取龈沟出血指数(SBI)、牙菌斑指数(PLI)、软垢指数(DI-S)和釉质脱矿指数(EDI)评价正畸患者1、3和6个月后不同刷牙时长对各项口腔健康指数的影响。结果:在1、3和6个月时,与1~3min和3~5min组比较,刷牙时长5~7min组患者SBI、PLI和DI-S明显降低(P0.05)。结论:刷牙时长5min以上可以有效改善正畸患者的口腔卫生状况,以5~7min为最佳刷牙时长,临床中应该建议青少年正畸患者刷牙时长在5min以上。

关键词：刷牙时长口腔卫生正畸龈沟出血指数牙菌斑指数软垢指数釉质脱矿指数

Unexpected Diversity in Ecosystem Nutrient Responses to Experimental Drought in temperate Grasslands

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Phyton-International Journal of Experimental Botany 2024年第4期93卷 831-841页

作者： Biying Qiu Niwu te Lin Song Yuan Shi Chuan Qiu Xiaoan Zuo Qiang Yu Jianqiang Qian Zhengwen Wang Honghui Wu Wentao Luo School of Life Sciences Hebei UniversityBaoding071002China Liaoning Northwest Grassland Ecosystem National Observation and Research Station Erguna Forest-Steppe Ecotone Research StationInstitute of Applied EcologyChinese Academy of SciencesShenyang110164China Northwest Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhou730030China School of Grassland Science Beijing Forestry UniversityBeijing100083China College of Forestry Henan Agricultural UniversityZhengzhou450002China State Key Laboratory of Efficient Utilization of Arid and Semi-Arid Arable Land in Northern China Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing100081China Key Laboratory of Arable Land Quality Monitoring and Evaluation Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing100081China

The responses of ecosystem nitrogen (N) and phosphorus (P) to drought are an important component of globalchange studies. However, previous studies were more often based on site-specific experiments, introducing a significantuncertainty to synthesis and site comparisons. We investigated the responses of vegetation and soil nutrientsto drought using a network experiment of temperate grasslands in Northern China. Drought treatment (66%reduction in growing season precipitation) was imposed by erecting rainout shelters, respectively, at the driest,intermediate, and wettest sites. We found that vegetation nutrient concentrations increased but soil nutrient concentrationsdecreased along the aridity gradient. Differential responses were observed under experimentaldrought among the three grassland sites. Specifically, the experimental drought did not change vegetation andsoil nutrient status at the driest site, while strongly reduced vegetation but increased soil nutrient concentrationsat the site with intermediate precipitation. On the contrary, experimental drought increased vegetation N concentrationsbut did not change vegetation P and soil nutrient concentrations at the wettest site. In general, the differentialeffects of drought on ecosystem nutrients were observed between manipulative and observationalexperiments as well as between sites. Our research findings suggest that conducting large-scale, consistent, andcontrolled network experiments is essential to accurately evaluate the effects of global climate change on terrestrialecosystem bio-geochemistry.

关键词： Climate change drought experiment precipitation nutrient cycles

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计量经济学中的机器学习方法:回顾与展望

统计与决策 2024年第1期40卷 52-56页

作者：石荣张特杨国涛宁夏大学经济管理学院银川750021

文章从传统计量经济学的三大作用——经济预测、验证理论、政策评价入手,梳理了机器学习与计量经济学融合发展过程中机器学习在计量经济学中的应用途径。研究发现:机器学习可以更高效地探索变量之间的关系,以做出更精准的预测;在大数据... 详细信息

文章从传统计量经济学的三大作用——经济预测、验证理论、政策评价入手,梳理了机器学习与计量经济学融合发展过程中机器学习在计量经济学中的应用途径。研究发现:机器学习可以更高效地探索变量之间的关系,以做出更精准的预测;在大数据背景下机器学习丰富了经济数据的多样性,通过对大量经济数据进行分析和处理,从而揭示出数据中的潜在模式、关联性和趋势,继而能够检验一些更复杂、更富有挑战性的研究假设;机器学习从识别假设条件、函数形式拟合、“反事实”预测等角度提高了因果处理效应估计的准确性和稳定性,进而更精确地定量评估政策效应,服务国家重大战略需求。

关键词：机器学习计量经济学大数据因果推断

《文心雕龙》“神思”“风骨”之意涵与《神思》至《总术》之结构

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复旦学报（社会科学版） 2024年第1期66卷 80-90页

作者：陈特复旦大学中国古代文学研究中心上海200433

《神思》在《文心雕龙》之“下篇”中占据核心地位。刘勰所谓之“思”,实包含内外两面。“思”之内关乎“意”,“思”之外形诸“言”,二者之间存在着逻辑上的先后,却并无决定性关系。《神思》全篇均围绕着“思”之内外两面展开,而《文... 详细信息

《神思》在《文心雕龙》之“下篇”中占据核心地位。刘勰所谓之“思”,实包含内外两面。“思”之内关乎“意”,“思”之外形诸“言”,二者之间存在着逻辑上的先后,却并无决定性关系。《神思》全篇均围绕着“思”之内外两面展开,而《文心雕龙》的“割情析采”部分(《神思》至《总术》,共十九篇),亦环绕着“思”之内外结撰而成,且分为两个层次:《神思》《体性》《风骨》三篇为枢轴,《通变》至《总术》十六篇则围绕着枢轴从宏观、微观等不同层次展开作文指导。通过对《文心雕龙》“神思”的准确分判,不仅能够更好地理解“神思”这一概念的所指与文学批评史价值;还能使“风骨”之意涵得到准确疏通:“风”与“骨”即“思”之内外两面得到妥善发挥后的效果;更能明晰“割情析采”十九篇之两层结构。

关键词：神思内外意言风骨割情析采

Fermi level tuning in Sn_(1-x)Pb_(x)te/Pb heterostructure via changing interface roughness

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Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 118-125页

作者： tengteng Liu Zhaoxia Yi Bangjin Xie Weiyan Zheng Dandan Guan Shiyong Wang Hao Zheng Canhua Liu Hao yang Yaoyi Li Jinfeng Jia Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education) Tsung-Dao Lee InstituteSchool of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Shanghai Research Center for Quantum Sciences Shanghai 201315China Hefei National Laboratory Hefei 230088China

Superconducting Snte-type topological crystalline insulators(TCIs)are predicted to host multiple Majorana zero modes(MZMs)which can coexist in a single *** level(FL)close to the Dirac points of topological surface states is helpful for detecting ***,the TCI Snte is a heavily p-type semiconductor which is very difficult to modify to n-type via doping or *** this work,we fabricate the atomically flat Sn_(1-x)Pb_(x)te/Pb heterostructure by molecular beam epitaxy,and make the p-type Sn_(1-x)Pb_(x)te become n-type through changing the interface *** scanning tunnelling microscope,we find the Dirac points of Sn_(1-x)Pb_(x)te/Pb heterostructure are always above the FL due to the Fermi level pinning(FLP)induced by topological surface states at atomically flat *** increasing the interface roughness,the FLP effect is suppressed and then the Dirac points of p-type Sn_(1-x)Pb_(x)te can be tuned very close to or even below the *** work provides a new method for tuning the FL of Snte-type TCI which has potential application in novel topological superconductor device.

关键词： topological crystalline insulator superconductor heterostructure Fermi level pinning interface roughness

美洲大蠊新基因Parcxpwxxq01的分析及功能预测

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生物信息学 2009年第2期7卷 137-139页

作者：杨特清肖小芹邵阳医学高等专科学校湖南邵阳422000 中南大学湘雅医学院湖南长沙410078

为进一步研究已发现的美洲大蠊新基因Parcxpwxxq01,我们采用BLASTp,ORF Finder,ProtScale,ScanProsite和Tmpred Server等软件或数据库进行相似性比较、开放读码框预测和编码蛋白质的功能等生物信息学方法对该序列进行特征分析和功能预测... 详细信息

为进一步研究已发现的美洲大蠊新基因Parcxpwxxq01,我们采用BLASTp,ORF Finder,ProtScale,ScanProsite和Tmpred Server等软件或数据库进行相似性比较、开放读码框预测和编码蛋白质的功能等生物信息学方法对该序列进行特征分析和功能预测,以获得该基因及其编码的蛋白质的更多功能提示。结果发现得到的Parcxpwxxq01序列是该基因的全长序列,该基因编码的蛋白质是一碱性跨膜蛋白,该蛋白质可能为美洲大蠊的药用有效成分,有进一步研究的价值。

关键词：美洲大蠊新基因编码生物信息学基因功能预测

ARPES investigation of the electronic structure and its evolution in magnetic topological insulator MnBi2+2nte4+3n family

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National Science Review 2024年第2期11卷 81-93页

作者： Runzhe Xu Lixuan Xu Zhongkai Liu Lexian yang Yulin Chen State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua University School of Physical Science and technology Shanghai Tech University and CAS-Shanghai Science Research Center Shanghai tech Laboratory for Topological Physics Frontier Science Center for Quantum Information Collaborative Innovation Center of Quantum Matter Department of Physics Clarendon LaboratoryUniversity of Oxford

In the past 5 years,there has been significant research interest in the intrinsic magnetic topological insulator family compounds MnBi2+2nte4+3n（where n=0,1,2…）.In particular,exfoliated thin films of MnBi2te4have led to numerous experimental breakthroughs,such as the quantum anomalous Hall effect,axion insulator phase and high-Chern number quantum Hall effect without Landau ***,despite extensive efforts,the energy gap of the topological surface states due to exchange magnetic coupling,which is a key feature of the characteristic band structure of the system,remains experimentally *** electronic structure measured by using angle-resolved photoemission （ARPES） shows significant deviation from ab initio prediction and scanning tunneling spectroscopy measurements,making it challenging to understand the transport results based on the electronic *** paper reviews the measurements of the band structure of MnBi2+2nte4+3nmagnetic topological insulators using ARPES,focusing on the evolution of their electronic structures with temperature,surface and bulk doping and film *** aim of the review is to construct a unified picture of the electronic structure of MnBi2+2nte4+3ncompounds and explore possible control of their topological properties.

关键词： magnetic topological insulator MnBi2te4 electronic structure angle-resolved photoemission spectroscopy

Surface morphologies of Mg-Gd alloy particle during its reactions with O_(2) and teflon

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Defence technology（防务技术） 2024年第3期33卷 209-221页

作者： Yifan Li Hongtao yang Aifeng Jiang Dongming Song Yanchun Li Department of Chemical Engineering Nanjing University of Science and TechnologyNanjing 210097China Xi'an Modern Chemistry Research Institute Xi'an 710065China Southwest technology and Engineering Research Institute Chongqing 400039China

Mg-Gd alloy particle has exhibited its unique combustion properties as the fuel of Mg/teflon/Viton(MTV).Mg-Gd alloy/teflon/Viton(MGTV)could burn at lower ambient pressure than *** further investigate the reaction of MGTV in air,it was investigated via thermo gravity-differential scanning calorimetry(TG-DSC).Meanwhile,the morphologies and element distributions on the alloy surface during the reaction of MGTV in air were investigated via scanning electronic microscope-mapping-electronic differential ***,a similar experimental protocol on the Mg-Gd alloy particle during oxidation was also *** results showed that owning to a protective oxide shell,the onset oxidation temperature of Mg-Gd alloy is higher than ***,the onset oxidation temperature of the exceeded Mg-Gd alloy in MGTV is significantly lower than that of the exceeded Mg in *** was due to the existence of GdOF,which could significantly lower the oxidation temperature of the exceeded ***,a possible reaction mechanism was *** fascinating oxidation properties of Mg-Gd alloy suggested its promising applications in energetic materials.

关键词： Mg-Gd alloy Energetic materials Morphology EDS GdOF