2012—2022年富硒产品研究现状及热点可视化分析

基于CNKI（中国知网）数据库，利用文献计量法和知识图谱分析工具CiteSpace对中国近10年来在富硒产品领域的研究成果进行系统梳理。从年度发文量、作者合作网络、机构合作网络、关键词共现网络、关键词时间线图等5个方面进行可视化分析。结果发现：核心作者共有65人，核心机构共有43个；除主题词外，高频关键词还有“硒含量”“富硒酵母”“无机硒”“富硒茶”等，共形成8个关键词聚类。通过关键词线图得到该领域热点。综合来看，中国富硒产品研究领域近10年来发文量呈稳定增长趋势，已初步形成合作紧密的研究团队，高校和研究所是主要研究机构且联系紧密，研究热点集中于硒含量、富硒产品现状、富硒土壤质量、特色产业富硒茶、富硒酵母等方面。     

中国科技创新与经济协调发展研究可视化分析

以1992—2022年CNKI核心数据库收录的203篇中国科技创新与经济协调发展研究文献作为数据基础，利用CiteSpace软件，分别绘制作者、机构和关键词可视化图谱，系统梳理领域研究热点并揭示领域研究进展。研究表明：2016年是该领域发文量激增的转折点；该领域研究机构合作网络不如作者合作网络连接密切；近年来领域研究热点主要转向科技创新与数字经济协调发展研究、科技金融发展研究、生态文明理念指导下的科技创新与经济协调发展研究。     

基于CiteSpace的科技创新与经济发展研究可视化分析

科技创新与经济发展密切关联,深入实施创新驱动发展战略,有助于推动经济高质量发展。文章利用CiteSpace软件,以2013—2022年中国知网(CNKI)数据库CSSCI收录的有关科技创新与经济发展为主题的相关学术性文献为研究对象,分别从发文数量、发文作者、发文机构、关键词等方面进行可视化知识图谱分析,对科技创新与经济发展的研究趋势进行了展望。研究结果表明：近年来文献发文量总体上呈现上升态势,但核心作者群还未形成;发文机构之间的合作呈现出分散的特征;关键词出现频次排在前3位的是“科技创新”“经济增长”“经济发展”;科技创新与经济发展中的“中介效应”“海洋经济”成为新的研究热点。     

基于CiteSpace的股票投资收益研究知识图谱可视化分析

股票投资收益研究为投资者参与股票投资提供知识基础。本文检索收集2002—2022年间以“股票投资收益”为关键词的文献共251篇，通过运行CiteSpace6.1.R2知识图谱软件对检索的文献进行发文作者、发文机构和关键词共现等可视化分析，并生成可视化知识图谱。结果表明，我国股票投资收益研究发展可以分为2002—2012年波动发展阶段和2013—2022年缓慢发展阶段两个阶段；我国股票投资收益研究主要热点关键词有“股票收益”“投资收益”“股票市场”“投资者”“股票股利”“投资组合”“收益率”“投资风险”“股票价格”和“资产定价”等；我国股票投资收益的研究重点共分为三个阶段。     

基于文献计量学视角的我国科技查新领域可视化现状研究

文章基于文献计量视角分析我国科技查新领域可视化的研究现状,供研究者参考。利用可视化软件对1998—2022年有关科技查新领域可视化中文期刊论文进行相关图谱和文献计量学分析,分析科技查新领域可视化的研究现状和趋势。研究结果显示,从发文量来看经历了平稳及下降等阶段,从作者合作分析来看密度较小,比较分散,并没有形成比较明显的作者合作网络图谱;研究机构之间的合作并不紧密,相互之间缺乏有效沟通合作;发现科技查新、专业素养、创新服务、大数据、科研服务、发展现状等研究热点词;关键词突显和时间线分析显示我国科技查新领域可视化研究热点的阶段转换。研究表明,应加强作者之间和机构之间的紧密合作与跨区域合作交流,促进区域间的科学研究均衡发展,促进科学发展。     

物流科技领域研究热点和研究前沿分析

利用海量科技文献数据挖掘和识别全球先进物流科技的研究热点和研究前沿，把握物流科技领域发展趋势，对中国引领全球物流科技发展、确保供应链安全具有重要参考价值。结合文献计量法、知识图谱、突变探测算法，以Web of Science（WOS)核心合集论文数据为对象，利用CiteSpace关键词共现网络、主题聚类、突变检测等方法进行计算和可视化分析。研究识别发现物流科技领域研究热点主要集中在物流供应链各环节优化技术，包括信息科技、系统平台等硬件创新科技成果应用，以及模型算法、网络设计等软件性能改进；研究前沿包括“信息”“工业4.0”“大数据”“模型”“协同”等。     

基于CNKI的黄河流域生态研究知识图谱分析

基于CiteSpace可视化文献分析工具，选取中国知识资源总库（CNKI）数据库，以2000—2020年关于“黄河流域”“生态”的学术期刊文献为样本，通过构建可视化研究图谱，从发文趋势、作者、机构、关键词共现、突现词、关键词聚类、时间线等角度，梳理近20年黄河流域生态研究脉络，阐析黄河流域生态与高质量发展的密切联系，总结研究历史、现状、当前热点以及前沿发展，为相关研究提供借鉴。     

中国技术经济研究的动态知识图谱分析

以1992年以来技术经济研究领域的中文文献为研究对象,借助文献计量软件CiteSpace V,对CNKI数据库该领域文献的发表时间、刊载期刊、高产作者与高产机构进行统计分析,并采用共词聚类分析法探讨1992-2016年中国技术经济研究的主要内容和研究专题,进而构建“关注度”指数、“新颖度”指数和战略坐标图,揭示1992-2016年中国技术经济研究专题的分布特征、研究热点与研究方向。结果表明：关于“技术进步与全要素生产率”、“高新技术产业化与政府行为创新”等问题是该领域关注的主要热点,而“产业升级与科技金融支持”、“知识溢出与创新的空间分析”等问题则是该领域较为新颖的研究方向。最后进一步对中国技术经济研究趋势进行了展望。     

基于知识图谱的国际知识创新研究可视化分析

以2002—2021年Web of Science 核心数据库中知识创新领域的1999篇文献作为数据样本,运用 CiteSpace软件对相关文献进行科学计量分析,并绘制知识创新研究领域的国家和机构分布、研究热点和趋势的知识图谱。结果显示,知识创新研究成果不断增多,美国、中国、英国、西班牙和意大利等国家在知识创新领域产出总量丰富。主要从研究主体、研究内容、影响因素3个方面分析热点关键词,企业间多以合作形式进行知识创新。最后,对未来的研究方向加以分析和总结。     

中国城乡收入差距研究的演变、热点与趋势——基于CiteSpace的可视化分析

以1998—2021年1 995篇城乡收入差距主题的CSSCI(中文社会科学引文索引)论文为研究对象,基于作者、机构、聚类、时间线和关键词突现图谱分析等层面,运用CiteSpace软件对城乡收入差距研究的现状和趋势进行分析。研究发现：收入差距、城镇化、城乡差距等方向是现阶段研究热点。研究关键词有新型城镇化、乡村振兴、普惠金融、数字经济,这些关键词是当前城乡收入差距的研究热点和主要趋势。通过将关键词和聚类、突现图相结合,分析未来城乡收入差距领域的研究前沿。     

Penetration and Post-infection Development of Meloidogyne Incognita on Tobacco as Treated by Rhizobacteria Pseudomonas Fluorescens Strain P-72-10

The bio-control potential of rhizospere bacteria Pseudomonas fluorescens against plant-parasite nematode had been demonstrated. P. fluorescens had shown the effect to enhance tobacco resistance to root-knot nematode Meloidogyne incognita. Inoculation with P. fluoreseens in tobacco could lead to significant reductions in the number of juveniles that penetrated tobacco root and further life stage development of the juveniles. The number of juveniles penetrated into tobac- co root in treatment with P. fluorescens is significantly different from CK at 2DAI, 6DAI, 8DAI and 10DAI. Significant reduction and delayed development of juveniles that penetrated into tobacco root and treated were observed in treatment at 14DAI, 21DAI, 28DAI and 35DAI. In addition, P. fluoreseens treatment leads to a significant reduction in the number of eggs per egg-mass at 35 DAI. The results show P. fluorescens induced a continuously suppression on root-knot nema- tode M. incognita throughout their entire early infection phase of root penetration, subsequent life stage development and reproduction.     

On the Major Transformation of the Asia-Pacific Regional Structure北大核心CSSCISSCI

Recent years have witnessedsignificant changes in the Asia-Pacific regionalstructure featuring the shift in power balance among related countries as well as adjust-ments in their respective regional strategies. So what is the prevailing trend in thistransformation and what kind of regional order will likely emerge in the future？ To an-swer these questions, the paper tries to explore the following dimensions： the evolvingregional context, shift in power balance and power conversion, geo-political and geo-e-conomic developments and interactions between them, and evolving regional order. Asthe study shows, the broadening of regional geographical scope, the rise in the numberof actors involved, as well as changesin the relations among them, have combined tocast a pluralistic and complex flavor to the regional structure. While the power balanceamong China, the United States and Japan shifts, and power conversion is also occur-ring. China and Japan are paying increasing attention to their security roles, whereasthe United States under the Obama administration laid more stress on expanding itsgeo-economic clout. In spite of the intensifying geopolitical competition among China,the United States and Japan in recent years, a Sino-US strategic compromise-whichholds the key to regional geopolitics-isother front, some kind of geo-economicmore likely to take place in the future. On thecooperation will probably emerge. In the longerterm, it will be the geo-economic trend thatwill prevail over the geopolitical trend inthe region. Finally, the future evolution of regional order wiI1 mainly follow the eco-nomic logic, accompanied by the dilutionof its hegemonic and hierarchical nature.Hence, a pluralistic and complex regional community will emerge.     

For Better or for Worse? Local Impacts of the Decentralization of Indonesia’s Forest Sector

This paper quantifies the local impacts of mechanized logging on forest-dependent communities in Indonesia, before and after decentralization. A conceptual framework incorporates financial, social, enforcement, rent-seeking, and environmental impacts. Using data from 60 communities in East Kalimantan, the empirical results suggest that significantly more households received financial and in-kind benefits after decentralization compared to before. Many communities engaged in self-enforcement activities against firms both before and after decentralization. Post-decentralization, a significantly higher proportion of households perceived community forest ownership. There were few significant differences in perceived environmental impacts. Little evidence exists of a post-decentralization trade-off between environmental and financial contractual provisions.     

以资本管理为核心的银行治理综合评价指标研究

商业银行的特殊性体现在风险性、外部性和多重治理目标上，尤其集中体现在风险管理的本质上。风险管理日益成为现代商业银行的主体活动和核心职能，资本管理成为现代商业银行风险管理的核心。在整合EVA和RAROC指标的基础上。文章构建了以资本管理为核心的银行治理的综合评价指标，以求真实反映银行经营的成果，有效衡量风险收益和风险成本的对比关系，从而反映以资本管理为核心的银行风险管理的过程、能力和效率。     

Organization and incentives in the age of sail

The British Navy in the age of sail was the most successful bureaucracy of its time. Its organization and incentive structures differed importantly from contemporaneous private sailing ventures, but closely resembled those of today’s large corporations. To induce efficient effort, the navy used a hierarchical tournament, in which sailors competed for higher pay that came with promotions based on relative performance. Promotion probabilities, the option value of future promotions, and the higher effort required of men in higher ranks and on larger vessels, combined to yield a highly skewed pay structure.     

The German Hanse and Bergen – new perspectives on an old subject

Abstract

The Hanseatic League and her kontors (trading posts) were an integral part of the medieval trade system in Northern Europe. Hanse merchants dominated many markets in this region and managed to maintain a monopoly-like role in towns like Novgorod and Bergen for many centuries. Consequently, one focus of historical research about the Hanseatic League lay on the mechanisms that enabled the Hanse merchants to keep that strong of a position for such a long time.

This article is part of the discussion about this topic. Based on Lübeck merchants with business interest in the Norwegian town of Bergen, the so-called Bergenfahrers (Bergen travellers), it will give new insights into the Hansards' economical and social organization. The three main points are (a) the integration of the Bergen market in the Hanseatic trade network as an intermediary trading place on the vivid East–West route of Hanse trade; (b) the importance of the Bergenfahrers within the Hanse merchants' economical, social and political networks; and (c) the structure of the Bergenfahrers network patterns in the late Middle Ages.

In addition to new insights into the important role of Bergen and the Bergenfahrers within Lübeck's and the other Wendish Hanse towns' trading system, this articles provides further proof for the usefulness of the methods of Social Network Analysis in medieval economic research.     

Markteintrittstiming von Telekommunikationsdiensteanbietern

Zusammenfassung Die vorliegende Studie analysiert für 87 Neuprodukteinführungen (NPE) und Auslandsmarkteintritte (AME) von Telekommunikations(TK)-Diensteanbietern in Deutschland, zu denen 42 Schlüsselinformanten in einer schriftlichen Befragung Auskunft gaben, (1) inwieweit deren zeitliche Eintrittspositionierung durch Marktcharakteristika und Unternehmensressourcen erkl?rbar ist sowie (2) inwieweit und gegebenenfalls unter welchen unternehmensexternen und -internen Situationsbedingungen deren Markteintrittstiming mit dem wahrgenommenen Eintrittserfolg assoziiert ist. Ein früher Markteintritt wurde dann realisiert, wenn die Wettbewerbsintensit?t im adressierten Gesch?ft niedrig und das Budget für den Expansionsschritt überdurchschnittlich ausfielen. Zwischen dem Markteintrittstiming und der Beurteilung des Eintrittserfolgs bestand ein nicht monotoner, umgekehrt U-f?rmiger Zusammenhang: Frühe Folger wiesen signifikant bessere Erfolgswerte auf als Pioniere und sp?te Folger, deren Erfolgsniveaus nicht signifikant divergierten. In einer Industrie, die durch starke externe Netzeffekte gepr?gt ist, fallen offenbar die Nachteile eines Markteintritts als Pionier oder sp?ter Folger st?rker ins Gewicht als die Vorteile dieser beiden zeitlichen Eintrittspositionierungen. Unabh?ngig vom Markteintrittstiming wurden NPE/AME von TK-Unternehmen als erfolgreicher eingestuft, wenn sie sich in einen Markt mit stark wachsender Nachfrage und aufeinander abgestimmt (re)agierenden Wettbewerbern mit qualitativ überdurchschnittlichen, abw?rtskompatiblen, erprobbaren und wenig erkl?rungsbedürftigen TK-Diensten engagierten.      

Financial Reporting and Trade Credit: Evidence from Mandatory IFRS Adoption*

We investigate the effect of mandatory IFRS adoption on trade credit. We document that firms in countries that adopt IFRS receive more trade credit from their suppliers, consistent with improved financial reporting quality and comparability playing a role in facilitating informal financing. This increase is larger for countries with a low level of societal trust, a poor pre‐IFRS‐adoption information environment, and stronger legal enforcement. These cross‐sectional results suggest that the conditions under which higher‐quality information is made publicly available affect suppliers' decisions to provide trade credit. This increase is also larger for firms with greater exposure to foreign markets, a finding that highlights the importance of more comparable international financial reporting standards in facilitating cross‐country trade credit. We also find that IFRS adoption has a stronger positive effect on trade credit for firms with greater liquidity needs. Finally, we find that firms in countries that adopt IFRS also extend more trade credit to their customers. Overall, our results support the notion that financial reporting can have a causal effect on trade credit.