1,721,268 research outputs found
Report of 21 unrecorded bacterial species in Korea belonging to the phylum Actinobacteria, discovered during the survey in 2020
No full textHam, You Ju, Jeong, Ji Won, Im, Wan-Taek, Kim, Won-Yong, Yoon, Jeong-Hun, Kim, Myung Kyum, Seong, Chi Nam, Kim, Seung Bum (2022): Report of 21 unrecorded bacterial species in Korea belonging to the phylum Actinobacteria, discovered during the survey in 2020. Journal of Species Research 11 (1): 1-9, DOI: 10.12651/JSR.2022.11.1.00
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
멀티스케일 증착 공정을 이용한 기능성 표면의 제작
Full text link학위논문 (박사)-- 서울대학교 대학원 : 기계항공공학부, 2015. 8. 최만수.In this thesis, we report novel multiscale deposition methods for fabricating functional surfaces. The processes using polymer and aerosol process have various advantages such as fast, cost-effective, easy material preparation and atmospheric environment process. We fabricated functional surfaces which have selective wettability, controllable wettability and energy conversion properties using those advantages.
First, we present that a thin layer of polydimethyl siloxane (PDMS) in the nano-thickness( 10) by utilizing irreversible bonding with oxygen plasma treatment and controlled interfacial fracture. The clean cleavage is attributed to the built-in stress at the fracture interface during the plasma treatment, resulting in the repetitive formation of a smooth membrane of ~5 nm roughness from the bulk PDMS. And then, we controlled height of transferred pattern via oxygen plasma treatment conditions and intrinsic characteristics of PDMS stamp. The method can be used to transfer various micro- and nanopatterns without a residual layer as well as to form nanogrooves of controlled dimension. Also, we achieved highly specific protein immobilization on the patterned surface of a solid substrate in a site-directed manner.
Next, we investigated about magnetic responsive and superhydrophobic pillar arrays via spray method. The magnetic pillars grow following magnetic field direction during spray process, represent enormous deflection under the magnetic force. From the fabrication result, we analyzed structure change and wetting characteristics of the pillars as strength of magnetic field and number of coating. Size of pillar was increased by repeated coating process and it makes the pillars become more hydrophobic. Furthermore, dual-roughness of pillars dramatically decreased the CA hysteresis of the pillar arrays. The large bending of the pillars generates geometrical potentials decrease the droplet ROAs on the structure. By the active property, we adjust sliding direction of the droplet by orientation of the magnet and we show active droplet manipulation and mixing result on the pillar structure via only structural modulation. Furthermore, formed ice particle under subzero temperature could be removed by motion of the magnetic pillar.
Finally, we present fabrication process to make the components of the solid oxide fuel cell (SOFC) using Electrospray deposition (ESD) method which can deposit a uniform membrane through simple step and evaluated its performances. The components of the SOFC such as anode functional layer (AFL), electrolyte layer, cathode functional layer (CFL) and cathode layer could be fabricated by ESD method followed by annealing process. Especially, we could get dense membrane and porous structure using ESD process. During annealing process, the morphology of the membrane is determined by the amount of the binder. In the low concentration of the binding polymer, the porous membrane is fabricated but in the high concentration, dense membrane morphology is attained. As a result, we could adjust the morphology of the ceramic membrane via ESD method and the concentration of polymer binder. Structure of cathode and electrolyte was optimized by controlling the amount of polymer binder, also their electrochemical characteristics were measured. The power density of the fabricated ESD-SOFC was 660 mW/cm2 power density at 650 °C.Chapter 1. Introduction 1
Chapter 2. Nano-Thickness Membrane Deposition via Controlled Polymer Interface Fracture 6
2-1. Introduction 6
2-2. Experimental 9
2-3. Results and Discussion 12
2-3-1. Mechanism of interfacial fracture in modified PDMS surface 12
2-3-2. Repetitive transfer of the modified PDMS 16
2-3-3. Thickness changes of the transferred patterns followed various process conditions 26
2-3-4. Shape transfer and applications 30
2-4. Summary 34
Chapter 3. Droplet Manipulation on the Magnetic Responsive Superhydrophobic Pillar Arrays 34
3-1. Introduction 34
3-2. Experimental 38
3-3. Results and Discussion 42
3-3-1. Preparation of magnetically responsive film 42
3-3-2. Active control of the dynamic structural change of the magnetic pillar arrays by an external magnetic force 51
3-3-3. Wetting properties of the magnetically responsive film 55
3-3-4. Remote manipulation of droplets on the magnetically responsive film 61
3-4. Summary 67
Chapter 4. Fabrication of Solid Oxide Fuel Cell via Electrospray method 69
4-1. Introduction 69
4-2. Experimental 73
4-3. Results and Discussion 75
4-3-1. Electrospray deposition process for fabrication of SOFC components 75
4-3-2. LSC cathode deposition by electrospray deposition and electrochemical analysis 77
4-3-3. YSZ electrolyte deposition by electrospray deposition and Structure control via polymer binder 86
4-3-4. ESD Cell fabrication and its electrochemical performances 89
4-4. Summary 94
References 95
국문초록 106Docto
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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