【摘 要】
:
What does 140 k versus 40 k reveal?rnIt has been reported,using Scopus data,that the number of short papers(also known as“non-source items”in the Web of Science)published in the United States in 2020 was about 140,000(about 18.5%of its total publication).
【机 构】
:
Editorial Office of Bio-Design and Manufacturing,Zhejiang University Press,Hangzhou 310028,China
论文部分内容阅读
What does 140 k versus 40 k reveal?rnIt has been reported,using Scopus data,that the number of short papers(also known as“non-source items”in the Web of Science)published in the United States in 2020 was about 140,000(about 18.5%of its total publication).The corresponding number to appear in China was only about 40,000(about 5.6%)[1].It is also noteworthy that the world\'s leading academic journals(e.g.,Science,Nature,and PNAS)have relatively long histories when it comes to publishing short papers,mainly Editorials,Opinions,News pieces,and Letters.We therefore took Nature as an example and listed the article types(or column headings)seen in its foundation year as well as in a recent issue(Table 1).This simple analysis shows that while several classic types have always been in use,some have been renamed over time in order to adapt to scientific developments of the last 150 years.It is noteworthy that the different kinds of short papers published in Nature have remained more-or-less stable over recent years(Table 1).
其他文献
Type 1 diabetes is caused by insulin deficiency due to the loss of beta cells in the islets of Langerhans.In severe cases,islet transplantation into the portal vein is performed.However,due to the loss of transplanted islets and the failure of islet funct
Polymethyl methacrylate(PMMA)bone cement is used in augmenting and stabilizing fractured vertebral bodies through percutaneous vertebroplasty(PVP)and percutaneous kyphoplasty(PKP).However,applications of PMMA bone cement are limited by the high elasticity
Current electrospun membranes used for pulp capping still lack the sustained-release capability and long-term anti-inflamma-tory effects that are favorable for dental pulp regeneration.In this work,a single-layered poly(lactic acid)(PLA)electrospun membra
IntroductionrnThe climax of the industrial revolution was marked by the rapid growth of industry,and advancement in technolo-gies have further fueled this industrial expansion,leading to a surge in economic growth.However,these technologies have also incr
Background Dense titanium(Ti)fusion cages have been commonly used in transforaminal lumbar interbody fusion.However,the stiffness mismatch between cages and adjacent bone endplates increases the risk of stress shielding and cage subsidence.Methods The cur
IntroductionrnMandibular segmental defects result in significant cosmetic and functional deficiencies.Meanwhile,the reconstruction of both the contour and function of the mandible is a challenging task.
Total temporomandibular joint(TMJ)replacement is recommended only when there is irreversible damage to the joint and no conservative treatment can provide functional improvements.Several stock and custom-made TMJ implants have been made available;however,
Due to their special anatomical and physiological features,central nervous system diseases still presented challenges,despite the fact that some advances have been made in early diagnosis and precision medicine.One of the complexities in treating tumors i
PPP项目因融资风险提前终止会给政府、社会资本、公众造成巨大损失.运用演化博弈理论,构建政府、社会资本、公众三方的演化博弈模型,确定当PPP项目面临融资风险时,影响各参与方决策的主要因素,并利用matlab对均衡点的稳定性进行仿真分析,最后结合PPP实践提出规避项目提前终止的建议.
研究制造商加工环境为两机自由作业和流水作业柔性排序问题,即工件既可以在制造商两台机器上加工,又可以转包给承包商机器加工.承包商有足够多机器,使得每台机器至多加工一个工件.工件在制造商及承包商机器上所需加工时间及费用均不同.本文需要确定被转包的工件集及未转包工件的加工顺序,在加工及转包总费用不超过给定值的情况下,分别极小化工件最大完工时间及工件总完工时间.证明了四个问题的NP困难性,并对自由作业情形设计多项式时间近似算法.