• Title/Summary/Keyword: Reference collection

Search Result 316, Processing Time 0.021 seconds

Classification of Isolates Originating from Kimchi Using Carbon-source Utilization Patterns

  • LEE, JUNG-SOOK;CHANG OUK CHUN;MIN-CHUL JUNG;WOO-SIK KIM;HONG-JOONG KIM;MARTIN HECTOR;SAM-BONG KIM;CHAN-SUN PARK
    • Journal of Microbiology and Biotechnology
    • /
    • v.7 no.1
    • /
    • pp.68-74
    • /
    • 1997
  • One hundred and eighty two lactic acid bacteria, isolated mainly from kimchi, including reference strains were examined for their ability to utilize 95 carbon sources. The test strains were assigned to 5 major, 1 minor and 12 single-membered clusters based on the $S_{SM}$, UPGMA algorithm (at similarity of $80{\%}$). These aggregate clusters were equivalent to the genus Leuconostoc (aggregate cluster M and N), the genus Lactobacillus (aggregate cluster Q and R), and the genera Lactobacillus and Leuconostoc (aggregate cluster O and P) according to the database of the Biolog system. This study demonstrates that rapid identification and classification of isolates originating from kimchi can be achieved on the basis of such carbon source utilization tests.

  • PDF

Impact of Open Access Models on Citation Metrics

  • Razumova, Irina K.;Kuznetsov, Alexander
    • Journal of Information Science Theory and Practice
    • /
    • v.7 no.2
    • /
    • pp.23-31
    • /
    • 2019
  • We report results of selection-bias-free approaches to the analysis of the impact of open access (OA) models on citation metrics. We studied reference groups of Gold and Green OA articles and the group of non-OA (Paywall) articles with the new functionality of the Web of Science Core Collection database, the InCites platform of Clarivate Analytics, and the Dimensions database of Digital Science. For each reference group we obtained the values of the percent of cited articles and citation impact and their dependence on the depth of the citation period. Different research fields were analyzed in two schemas of the InCites platform. We report the higher values and growth rates of the citation metrics: citation impact and %Cited, in the OA reference groups over the Paywall group. The Green OA articles demonstrate the highest values of citation metrics among all the OA models. Dependence of the value of citation impact on citation period follows linear law with R2 values close to 0.9-1.0. The overall annual growth rates of citation impact of the Green OA, Gold OA, and the Paywall articles, k equal, respectively, 3.6, 2.4, and 1.4 in Dimensions and 4.6, 3.6, and 2.3 in the Web of Science Core Collection. We suppose that earlier results reported for the articles in pure OA journals vs. articles in Paywall journals were affected by the high citation impact of the Green and Hybrid OA articles that could not be elucidated in the Paywall journals at that time.

Diversity and Genotypic Structure of ECOR Collection Determined by Repetitive Extragenic Palindromic PCR Genome Fingerprinting

  • HWANG KEUM-OK;JANG HYO-MI;CHO JAE-CHANG
    • Journal of Microbiology and Biotechnology
    • /
    • v.15 no.3
    • /
    • pp.672-677
    • /
    • 2005
  • The standard reference collection of strains for E. coli, the ECOR collection, was analyzed by a genome-based typing method. Seventy-one ECOR strains were subjected to repetitive extragenic palindromic PCR genome fingerprinting with BOX primers (BOX-PCR). Using a similarity value of 0.8 or more after cluster analysis of BOX-PCR fingerprinting patterns to define the same genotypes, we identified 28 genotypes in the ECOR collection. Shannon's entropy-based diversity index was 3.07, and the incident-based coverage estimator indicated potentially 420 genotypes among E. coli populations. Chi-square test of goodness-of-fit showed statistically significant association between the genotypes defined by BOX-PCR fingerprinting and the groups previously defined by multi-locus enzyme electrophoresis. This study suggests that the diversification of E. coli strains in natural populations is actively ongoing, and rep-PCR fingerprinting is a convenient and reliable method to type E. coli strains for the purposes ranging from ecology to quarantine.ine.

Study on Performance Evaluation of Marine Kitchen Ventilation Hood (선박용 주방 환기후드의 성능평가에 관한 연구)

  • Kim, Dong-Gyu;Chung, Yong-Hyun;Kum, Jong-Soo
    • Journal of Fisheries and Marine Sciences Education
    • /
    • v.26 no.6
    • /
    • pp.1373-1379
    • /
    • 2014
  • The purpose of this research is to evaluate the performance of the Ventilation hood and to make better oil collection for improvement. In order to complete the purpose, the research range has limited a kitchen cooking utensil used in preparing food in vessels. Assessment was carried out with reference(ASTM F1704-09) to the specification. Evaluation items of ventilation hood were flow visualization, oil collection rate and noise levels. When filter angle was 40 degrees, oil collection rate was increased by 9%.

Assessing a University Library Collection: with a Special Reference to Political Science Collection in A University Library (대학도서관 장서평가 연구 - A대학교도서관 정치학장서를 중심으로 -)

  • Chang, Durk Hyun
    • Journal of the Korean BIBLIA Society for library and Information Science
    • /
    • v.24 no.4
    • /
    • pp.133-152
    • /
    • 2013
  • This study strives to perform a pilot collection assessment study with the political science collection in a university library. Employing the basic list-checking analysis method, the study scrutinized the collection statistics and the circulation statistics, and check the current library holdings with a standard list which was composed of cited works extracted from course syllabi, theses, dissertations and faculty research papers. Although the study is a pilot case study that a particular model was applied to a collection in the field of political science, the result and procedures of the assessment will provide some implications regarding collection assessment in university libraries.

Unique Phylogenetic Lineage Found in the Fusarium-like Clade after Re-examining BCCM/IHEM Fungal Culture Collection Material

  • Triest, David;De Cremer, Koen;Pierard, Denis;Hendrickx, Marijke
    • Mycobiology
    • /
    • v.44 no.3
    • /
    • pp.121-130
    • /
    • 2016
  • Recently, the Fusarium genus has been narrowed based upon phylogenetic analyses and a Fusarium-like clade was adopted. The few species of the Fusarium-like clade were moved to new, re-installed or existing genera or provisionally retained as "Fusarium." Only a limited number of reference strains and DNA marker sequences are available for this clade and not much is known about its actual species diversity. Here, we report six strains, preserved by the Belgian fungal culture collection BCCM/IHEM as a Fusarium species, that belong to the Fusarium-like clade. They showed a slow growth and produced pionnotes, typical morphological characteristics of many Fusarium-like species. Multilocus sequencing with comparative sequence analyses in GenBank and phylogenetic analyses, using reference sequences of type material, confirmed that they were indeed member of the Fusarium-like clade. One strain was identified as "Fusarium" ciliatum whereas another strain was identified as Fusicolla merismoides. The four remaining strains were shown to represent a unique phylogenetic lineage in the Fusarium-like clade and were also found morphologically distinct from other members of the Fusarium-like clade. Based upon phylogenetic considerations, a new genus, Pseudofusicolla gen. nov., and a new species, Pseudofusicolla belgica sp. nov., were installed for this lineage. A formal description is provided in this study. Additional sampling will be required to gather isolates other than the historical strains presented in the present study as well as to further reveal the actual species diversity in the Fusarium-like clade.

Unobtrusive Performance Evaluation of Reference Librarians in Academic Libraries of Korea (비 통보식 조사를 통한 참고사서 업무능력 평가)

  • Kim Youngshin
    • Journal of the Korean Society for Library and Information Science
    • /
    • v.29
    • /
    • pp.305-343
    • /
    • 1995
  • The purposes of this study are to confirm the applicability of the unobtrusive evaluation to Korean libraries, to develop survey forms, check lists and evaluation criteria appropriate for Korean libraries, to analyze the relationship between the test variables and the performance level, to find out the causes of poor service if any, and to propose measures for improving the quality of reference services. The main results of the analyses are as follows : $\cdot$ The accuracy of answers was correlated to appropriateness of search process, way of providing answer, usage of language, approachability and use of second materials in the order named. That is, there was a strong correlation between accuracy and the variables related to librarian's behavior. $\cdot$ There was no statistically significant relationship between accuracy and the environmental aspects of reference department such as number of professional librarians, self-evaluation of reference collection, etc. $\cdot$ The main reasons for failing to give accurate answers were found to be weaknesses in understanding questions. developing search strategy logically and relating the querries to available information sources.

  • PDF

A Study on the Effects of Construction Tolerances on the Current Collection Performance for High Speed Catenary System (고속전차선로의 시공 허용오차가 집전성능에 미치는 영향에 관한 연구)

  • Kim, Tae-Hun;Seo, Ki-Bum;Park, Jae-Young
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.64 no.12
    • /
    • pp.1782-1788
    • /
    • 2015
  • In this paper, analysis of the effects for construction tolerances on the current collection performance of high speed catenary system. The height of the contact wire is the geometrical position of the cantilever directly affects the current collection performance. Contact force when the height of the contact wire exceeds the construction tolerance were analyzed. As a result, the maximum contact force was analyzed to more than 350[N] that are recommended by EN50119. And when the geometrical position of the cantilever to exceeds the construction tolerance, the analysis results of uplift at the mast support points, it becomes 127[mm] that are recommended by UIC 799. If the construction tolerances exceeds the reference value, the current collection performance is deteriorated. Therefore, catenary system require high precision construction. In the future, there is a need for continuing research on the tolerance of catenary system in the actual operating state.

A Survey on the Mobile Crowdsensing System life cycle: Task Allocation, Data Collection, and Data Aggregation

  • Xia Zhuoyue;Azween Abdullah;S.H. Kok
    • International Journal of Computer Science & Network Security
    • /
    • v.23 no.3
    • /
    • pp.31-48
    • /
    • 2023
  • The popularization of smart devices and subsequent optimization of their sensing capacity has resulted in a novel mobile crowdsensing (MCS) pattern, which employs smart devices as sensing nodes by recruiting users to develop a sensing network for multiple-task performance. This technique has garnered much scholarly interest in terms of sensing range, cost, and integration. The MCS is prevalent in various fields, including environmental monitoring, noise monitoring, and road monitoring. A complete MCS life cycle entails task allocation, data collection, and data aggregation. Regardless, specific drawbacks remain unresolved in this study despite extensive research on this life cycle. This article mainly summarizes single-task, multi-task allocation, and space-time multi-task allocation at the task allocation stage. Meanwhile, the quality, safety, and efficiency of data collection are discussed at the data collection stage. Edge computing, which provides a novel development idea to derive data from the MCS system, is also highlighted. Furthermore, data aggregation security and quality are summarized at the data aggregation stage. The novel development of multi-modal data aggregation is also outlined following the diversity of data obtained from MCS. Overall, this article summarizes the three aspects of the MCS life cycle, analyzes the issues underlying this study, and offers developmental directions for future scholars' reference.

Perception of agricultural biotechnology according to information navigation activities on agricultural biotechnology

  • Bumkyu, Lee;Sung-Dug, Oh;Youn Sung, Cho
    • Korean Journal of Agricultural Science
    • /
    • v.48 no.4
    • /
    • pp.761-770
    • /
    • 2021
  • A study was undertaken to identify variations in the level of awareness, the information collection status, the level of acceptance, and the characteristics of information collection as it pertains to agricultural biotechnology based on information collection in the field of agricultural biotechnology. When examining subjective awareness, objective awareness, and interest in agricultural biotechnology, the results showed that the levels of all three variables were higher in cases where information exploration of agricultural biotechnology had been experienced. Among the participants who have experience in voluntarily collecting information about agricultural biotechnology, helpful information at a rate of 51.6% and harmful information at a rate of 42.0% were acquired, values much higher than the 37% and 30% corresponding rates for participants who had no experience. However, it was also found that harmful information has a significantly greater impact on perceptions of the future. The characteristics of information collection for agricultural biotechnology indicated that those with experience in voluntary information collection particularly preferred the Internet, whereas those without any experience showed little difference with regard to television and/or the internet. According to a survey of participants' interest areas in agricultural biotechnology and their level of information acquisition, "Safety of human bodies" was rated the top interest area at 36.9%, which also had the highest level of information acquisition at 30.0%. In providing and sharing information in the future, this is a direct reference to the priorities and proportions of each field.