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Library and Information Science Papers Discussed on Twitter: A new Network-based Approach for Measuring Public Attention

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Journal of Data and Information Science 2020年第3期5卷 5-17页

作者： robin Haunschild Loet Leydesdorff Lutz Bommann Max Planck Institute for Solid State Research Heisenbergstr.170569 StuttgartGermany Amsterdam School of Communication Research(ASCoR) University of AmsterdamPB 157931001 NG AmsterdamThe Netherlands Administrative Headquarters of the Max Planck Society Division for Science and Innovation StudiesHofgartenstr.880539 MunichGermany

Purpose: In recent years, one can witness a trend in research evaluation to measure the impact on society or attention to research by society(beyond science). We address the following question: can Twitter be meaningfully used for the mapping of public and scientific discourses?Design/methodology/approach: Recently, Haunschild et al.(2019) introduced a new network-oriented approach for using Twitter data in research evaluation. Such a procedure can be used to measure the public discussion around a specific field or topic. In this study, we used all papers published in the Web of Science(WoS, Clarivate Analytics) subject category Information Science & Library Science to explore the publicly discussed topics from the area of library and information science(LIS) in comparison to the topics used by scholars in their publications in this ***: The results show that LIS papers are represented rather well on Twitter. Similar topics appear in the networks of author keywords of all LIS papers, not tweeted LIS papers, and tweeted LIS papers. The networks of the author keywords of all LIS papers and not tweeted LIS papers are most similar to each *** limitations: Only papers published since 2011 with DOI were *** implications: Although Twitter data do not seem to be useful for quantitative research evaluation, it seems that Twitter data can be used in a more qualitative way for mapping of public and scientific ***/value: This study explores a rather new methodology for comparing public and scientific discourses.

关键词： Altmetrics Twitter News Hashtags Author keywords

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Multiplication factor for open ground storey buildings–a reliability based evaluation

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Earthquake Engineering and Engineering Vibration 2016年第2期15卷 283-295页

作者： Haran Pragalath D.C Avadhoot Bhosale robin Davis P Pradip Sarkar Department of Civil Engineering NIT Rourkela

Open Ground Storey（OGS） framed buildings where the ground storey is kept open without infill walls, mainly to facilitate parking, is increasing commonly in urban areas. However, vulnerability of this type of buildings has been exposed in past earthquakes. OGS buildings are conventionally designed by a bare frame analysis that ignores the stiffness of the infill walls present in the upper storeys, but doing so underestimates the inter-storey drift（ISD） and thereby the force demand in the ground storey columns. Therefore, a multiplication factor（MF） is introduced in various international codes to estimate the design forces（bending moments and shear forces） in the ground storey columns. This study focuses on the seismic performance of typical OGS buildings designed by means of MFs. The probabilistic seismic demand models, fragility curves, reliability and cost indices for various frame models including bare frames and fully infilled frames are developed. It is found that the MF scheme suggested by the Israel code is better than other international codes in terms of reliability and cost.

关键词： frames probabilistic vulnerability facilitate details Probability codes multiplication drift columns

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A rewriting system for convex optimization problems

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Journal of Control and Decision 2018年第1期5卷 42-60页

作者： Akshay Agrawal robin Verschueren Steven Diamon Stephen Boyd Department of Computer Science Stanford UniversityStanfordCAUSA Department of Electrical Engineering Stanford UniversityStanfordCAUSA Institut für Mikrosystemtechnik Albert-LudwigsUniversität FreiburgGermany

We describe a modular rewriting system for translating optimization problems written in a domain-specific language(DSL)to forms compatible with low-level solver *** is facilitated by reductions,which accept a category of problems and transform instances of that category to equivalent instances of another *** system proceeds in two key phases:analysis,in which we attempt to find a suitable solver for a supplied problem,and canonicalization,in which we rewrite the problem in the selected solver’s standard *** implement the described system in version 1.0 of CVXPY,a DSL for mathematical and especially convex *** treating reductions as first-class objects,our method makes it easy to match problems to solvers well-suited for them and to support solvers with a wide variety of standard forms.

关键词： Convex optimization domain-specific languages rewriting systems reductions

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遍布火山的卫星

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环球科学 2024年第3期 12-14页

作者：罗宾·乔治·安德鲁斯巢栩嘉(译) 不详

关于木卫一(lo),科学家可以肯定两件事情。一是,木星的这颗卫星是目前宇宙中已知的火山最多的天体。它的地表布满了大量火山口,这些火山口不断地喷出熔岩,就像一个在烤箱里烘烤过的奶酪披萨.

关键词：火山口木星木卫一宇宙天体熔岩

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Staging the axilla in women with breast cancer: the utility of preoperative ultrasound-guided needle biopsy

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Cancer Biology & Medicine 2014年第2期11卷 69-77页

作者： Nehmat Houssami robin M. Turner Screening and Test Evaluation Program (STEP) School of Public Health Sydney Medical School University of Sydney

Preoperative staging of the axilla in women with invasive breast cancer using ultrasound-guided needle biopsy(UNB) identifies approximately 50% of patients with axillary nodal metastases prior to surgical intervention. Although moderately sensitive, it is a highly specific staging strategy that is rarely falsely-positive, hence a positive UNB allows patients to be triaged to axillary lymph-node dissection(ALND) avoiding potentially unnecessary sentinel node biopsy(SNB). In this review, we extend our previous work through an updated literature search, focusing on studies that report data on UNB utility. Based on data for 10,934 breast cancer patients, sourced from 35 studies, a positive UNB allowed triage of 1,745 cases(simple proportion 16%) to axillary surgical treatment: the utility of UNB was a median 19.8% [interquartile range(IQR) 11.6%-26.7%] across these studies. We also modelled data from a subgroup of studies, and estimated that amongst patients with metastases to axillary nodes, the odds ratio(OR) for high nodal disease burden for a positive UNB versus a negative UNB was 4.38 [95% confidence interval(95% CI): 3.13, 6.13], P<0.001. From this model, the estimated proportion with high nodal disease burden was 58.9%(95% CI: 50.2%, 67.0%) for a positive UNB, whereas the estimated proportion with high nodal disease burden was 24.6%(95% CI: 17.7%, 33.2%) if UNB was negative. Overall, axillary UNB has good clinical utility and a positive UNB can effectively triage to ALND. However, the evolving landscape of axillary surgical treatment means that UNB will have relatively less utility where surgeons have modified their practice to omission of ALND for minimal nodal metastatic disease.

关键词： Breast cancer axillary staging node metastases test utility ultrasound-guided needle biopsy(UNB)

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On the Vortex Sheets of Compressible Flows

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Communications on Applied Mathematics and Computation 2023年第3期5卷 967-986页

作者： robin Ming Chen Feimin Huang Dehua Wang Difan Yuan Department of Mathematics University of PittsburghPittsburghPA 15260USA School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China Institute of Applied Mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences Beijing Normal University and Laboratory of Mathematics and Complex SystemsMinistry of EducationBeijing 100875China

This paper provides a review of the recent results on the stability of vortex sheets in compressible *** sheets are contact discontinuities of the underlying *** vortex sheet problem is a free boundary problem with a characteristic boundary and is challenging in *** formulation of the vortex sheet problem will be *** linear stability and nonlinear stability for both the two-dimensional two-phase compressible flows and the two-dimensional elastic flows are *** linear stability of vortex sheets for the three-dimensional elastic flows is also *** difficulties of the vortex sheet problems and the ideas of proofs are discussed.

关键词： Vortex sheets Contact discontinuities Stability and instability Loss of derivatives Two-phase flows Elastic flows

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Hydrothermal base catalyzed depolymerization and conversion of technical lignin-An introductory review

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Carbon Resources Conversion 2019年第1期2卷 59-71页

作者： Malte Otromke robin J.White Jorg Sauer Institute of Catalysis Research and Technology(IKFT) Karlsruhe Institute of Technology(KIT)Eggenstein-LeopoldshafenGermany Sustainable Catalytic Materials Group Division Hydrogen TechnologiesFraunhofer Institute for Solar Energy Systems ISEHeidenhofstr.279110 FreiburgGermany GmbH Group Process TechnologyFrankfurt am MainGermany

Lignin represents the most significant potential source of sustainable aromatic ***,the vast majority of technical lignin could be sourced from industrial paper production and in particular the Kraft process,where it is conventionally combusted for chemicals recovery and heat generation(*** plant operation).While in recent years several efforts have concerned the conversion of native lignin(*** found in nature)during biomass processing,there has also been significant focus on the“Base Catalyzed”conversion of technical *** process is of significant interest,since it could be potentially integrated into existing Kraft mill *** following review paper focuses on the development of the hydrothermal base catalyzed depolymerization(HBCD)of lignin,as a basis to produce valuable chemical *** will be placed on NaOH catalyzed reactions in the aqueous phase,as this approach is considered the most *** is placed on reaction conditions and characterization of monomeric aromatic compounds from the HBCD ***,as largest product fraction,is also considered,however,these are seldom analyzed in detail in the literature and ideas on further use are *** review also addresses findings in literature concerning the assessment of the solid,liquid,and gas product streams arising from *** this paper,process conditions for HBCD reactions can be derived and it is shown that the solid phase has a high potential for further valorization and downstream processing.

关键词： catalyzed polymerization lignin

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Sex differences in cognition and their relationship to male mate choice

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Current Zoology 2019年第3期65卷 285-293页

作者： Jason KEAGY Ross MINTER robin M.TINGHITEELLA Department of Animal Biology School of Integrative Biology University of Illinois at Urbana-Champaign Urbana IL USA Linda Crnic Institute for Down Syndrome University of Colorado School of Medicine Aurora CO USA Department of Biological Sciences University of DenverDenverCOUSA

Male cognition has gained recognition as an important potential player in sexual selection. A number of studies have found positive correlations between male sexual signals and cognitive performance an d/or female pref ere nces for males with better cog nitive performance, although other studies have not fou nd these relati on ships. Sex roles can differ dramatically, and sex differen ces in selection on cog nition likely follow from the different tasks associated with these sex roles. Here, using threespine stickleback Gasterosteus aculeatus, a species with clearly diverge nt sex roles and mutual mate choice, we focus on the cognitive trait inhibitory control because males must differentially respond to reproductive females versus other sticklebacks while defending territories and refrain from eating eggs and fry while performing paternal care. We presented fish with a detour task four times over a period of 7 days, allowing us to assess initial inhibitory control and improvement over time. We ask 1) whether there are sex differences in inhibitory control and 2) whether male mate choice is associated with female inhibitory control. Although males outperformed females on three different measures of detour task performance across four trials, these differences were largely explained by males being less neophobic than females. Females took more trials to successfully solve the detour task, even after accounting for sex differences in neophobia. Female cognitive abilities, however, were unrelated to the vigor with which males courted them. The equivocal results regarding sex differences in cognitive ability suggest further study given the very different selection pressures each sex experiences.

关键词： cognition detour task mutual mate choice sexual selection threespine stickleback

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Particle flow simulations with homogenised lattice Boltzmann methods

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Particuology 2017年第5期15卷 1-13页

作者： Mathias J. Krause Fabian Klemens Thomas Henn robin Trunk Hermann Nirschl Institute for Applied and Numerical Mathematics Karlsruhe Institute of Technology 76021 Karlsruhe Germany Institute for Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology 76021 Karlsruhe Germany

An alternative approach to simulating arbitrarily shaped particles submersed in viscous fluid in two dimensions is proposed, obtained by adapting the velocity parameter of the equilibrium distribution function of a standard lattice Boltzmann method （LBM）. Comparisons of exemplifying simulations to results in the literature validate the approach as well as the convergence analysis. Pressure fluctuations occurring in Ladd＇s approach are greatly reduced. In comparison with the immersed boundary method, this approach does not require cost intensive interpolations. The parallel efficiency of LBM is retained. An intrinsic momentum transfer is observed during particle-particle collisions. To demonstrate the capa- bilities of the approach, sedimentation of particles of several shapes is simulated despite omitting an explicit particle collision model.

关键词： Particulate flow simulationsArbitrarily shaped particlesLattice Boltzmann methodsValidationSedimentation processes

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Host-environment mismatches associated with subalpine fir decline in Colorado

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Journal of Forestry Research 2016年第5期27卷 1177-1189页

作者： robin M. Reich John E. Lundquist Kristina Hughes Colorado State University Fort Collins CO USA U.S. Forest Service Anchorage Anchorage AK 99501 USA

Subalpine fir decline （SFD） has killed more trees in Colorado＇s high elevation forests than any other insect or disease problem. The widespread nature of this disorder suggests that the cause involves climatic factors. We examined the influence of varying combinations of average annual temperature and precipitation on the incidence and distribution of SFD. Climatic transition matrices generated in this study indicate that most healthy trees are found in climatic zones with moderate to low temperatures and high precipitation; whereas, SFD occurs mostly in zones of moderate temperatures and moderate precipitation. The contrasting distributions define an environmental mismatch. Forests matched with favorable climatic conditions thrive; those that are mismatched can become vulnerable to decline disease.

关键词： Abiotic disorder Climate stress High elevation forests Forest disease - Subalpine fir

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