1,720,968 research outputs found
A Study on Indexing Efficiency and Retrieval Accuracy for Author Name Search of Academic Papers
No full textAbstract: Most academic information has its creator, that is, a subject who has created the information. The subject can be an individual, a group, or an institution, and can be a nation depending on the nature of the relevant information. Most web data are composed of a title, an author, and contents. A paper which is under the academic information category has metadata including a title, an author, keyword, abstract, data about publication, place of publication, ISSN, and the like. A patent has metadata including the title, an applicant, an inventor, an attorney, IPC, number of application, and claims of the invention. Most web-based academic information services enable users to search the information by processing the meta-information. An important element is to search information by using the author field which corresponds to a personal name. This study suggests a method of efficient indexing and using the adjacent operation result ranking algorithm to which phrase search-based boosting elements are applied, and thus improving the accuracy of the search results of author name. This method can be effectively applied to providing accurate search results in the academic information services
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
서울 도심 용존유기에어로졸의 특성
Get PDF학위논문 (석사)-- 서울대학교 대학원 : 지구환경과학부, 2017. 2. 김규범.Water-soluble organic matter (WSOM) in aerosols plays a significant role in atmospheric processes affecting on global climate system directly by absorbing and scattering solar radiation and indirectly by acting as cloud condensation nuclei (CCN) and as potential sources for further reactions. The light absorbing organic carbon in aerosol WSOM including brown carbon (BrC) and humic-like substances (HULIS) also has a significant impact on climate forcing by absorbing the ultraviolet (UV) wavelengths and visible spectrum. However, despite the potential importance of aerosol WSOM to global biogeochemical cycle and climate system, current understanding of its chemical compositions, optical properties, and processes are still poorly understood. Therefore, the objective of this study is to identify the characteristics of aerosol WSOM using the concentrations of water-soluble organic carbon (WSOC), water-soluble organic nitrogen (WSON), inorganic ion species, stable carbon isotope ratios (δ13CWSOC), and fluorescence techniques at an urban metropolitan city, Seoul, Korea from March 2015 to January 2016.
A seasonal variation in the WSOC concentration ranged from 3.1 to 39.5 μg m-3 (mean: 16.1 μg m-3) with higher values during cold seasons (Mar–May and Oct–Jan) and lower values during warm seasons (Jun–Sep). The water-soluble organic nitrogen (WSON) concentrations ranged from 0.8 to 81.7 μg m-3 (mean: 14.5 μg m-3) with large variations over different seasons. The δ13CWSOC values ranging from –21.0 to –27.5‰ (mean: –24.0‰) had contrasting pattern in their seasonal variation compared to the WSOC concentration, which fall within the range of terrestrial C3 plants (–24.0 to –37.0‰) and anthropogenic fossil combustion sources (–25.0 to –32.0‰). In addition, a 10-day air mass back trajectory showed that most of air masses are transported from the East Asian continents except for summer indicating that continental outflow may become a powerful source influencing the organic carbon signature in Seoul.
The fluorescence property of aerosol WSOM and WSOC concentration exhibited a similar seasonal variation indicating the greatest similarity in their atmospheric process through a year. As the UV radiation intensity increases more than two folds during the summer (Jun–Sep), the fluorescence intensities of humic compounds in aerosol WSOM decreased approximately by 80% and the total WSOC concentration decreased approximately by 30% suggesting that humic fraction is more susceptible to UV irradiation. A linear relationship between the fluorescence intensity of humic components and UV radiation rate (r2=0.4) indicates that atmospheric HULIS is predominantly controlled by photo-induced degradation. These results were also in good agreement with the experiment result.
The results suggest that aerosol WSOM in Seoul was mainly derived from a local terrestrial and anthropogenic fossil combustion sources. A significant change in fluorescence property of chromophores in aerosol WSOM was predominantly influenced by photo-induced degradation. The photochemical degradation plays a significant role in atmospheric optical property and might be an important sink for light absorbing organic compounds in ambient urban aerosols.1. Introduction 1
1.1 Atmospheric organic matter 1
1.2 Aim of this study 3
2. Materials and Methods 6
2.1 Study area and sample collection 6
2.2 Ait mass back trajectory model 10
2.3 Aerosol WSOM extraction and preparation 12
2.4 Analysis of WSOC and TDN 14
2.5 Analysis of major ions 16
2.6 Analysis of stable carbon isotope ratios 20
2.7 Analysis of fluorescent WSOM and PARAFAC model 22
2.8 Photochemical degradation experiment 25
3. Results 26
3.1 Air mass back trajectory 26
3.2 Chemical compositions 27
3.3 Fluorescence property 32
3.4 Photochemical degradation experiment 36
4. Discussion 38
4.1 Chemical property 38
4.2 Fluorescence property 48
5. Conclusion 56
References 57
Appendix 66
국문초록 68Maste
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