• Title/Summary/Keyword: University Archives

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Total Synthesis of Sufentanil

  • Shin, Dong-Yun;Ryu, Jae-Sang;Hyun, Soon-Sil;Park, Hyun-Ju;Jeon, Ra-Ok;Suh, Young-Ger
    • Archives of Pharmacal Research
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    • v.22 no.4
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    • pp.398-400
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    • 1999
  • Sufentanil, a potent anilidopiperidine analgesic, was synthesized from a simple thiophenylethylamine via six sequence. The key parts of this synthesis involved an efficient construction of thiophenylethylpiperidone by aminomethano desilylation-cyclization followed by Swern oxidation and a direct regioselective N-nucleophilic spiral epoxide cleavage with aniline promoted by Lewis acids.

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Relationship Between Brain Injury and Head Circumference Growth in Extremely Premature Infants (중증 미숙아의 뇌병변과 머리둘레 성장 간의 관계)

  • Ahn, Young-Mee;Lee, Sang-Mi
    • Child Health Nursing Research
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    • v.17 no.4
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    • pp.281-287
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    • 2011
  • Purpose: The study was done to explore growth variation in head circumference (HC) in extremely premature infants (EPI) with brain injury. Methods: A retrospective cohort study was conducted with 79 cohort samples from the archives of the catch-up growth project. Mean age of the infants was 29.2 weeks of gestation and mean HC, 27.1 cm at birth. Their HC measurements were retrieved from the archives up to 6 month of corrected age (CA) and analyzed against history of brain injury during hospitalization. Results: Overall growth retardation in HC was observed in the cohort sample compared to longer gestation premature infants. EPI with brain injury showed decreased HC compared to infants without brain injury, and resulting growth variation across 6 month of CA. Highest retardation in HC growth was observed in male infants with brain injury. Conclusion: Extreme preterm birth itself may function as a major obstacle against HC growth toward term age in EPI. Sustainability of brain injury could be observed with higher HC growth retardation after term. Evolutionary favor to female infants may exist in HC growth of EPI. Intensive education on HC monitoring is highly suggested for parents of EPI, particularly with children with brain injury.

Constructing a Prototype Union Database of Encoded Archival Descriptions - A Case of the Online Archive of California Project - (EAD를 이용한 기록자료 자동화방안 - Online Archive of California 프로젝트를 중심으로 -)

  • Park, Eun-Kyung
    • Journal of Korean Society of Archives and Records Management
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    • v.2 no.2
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    • pp.93-106
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    • 2002
  • Finding aids are descriptive tools for archival materials in order to physically and intellectually understand and control archival collections. For electronic finding aids, encoded archival description has been developed as part of the Online Archive of California project for direct and comprehensive access to a variety of archival materials across the California state. The purpose of this article are: to understand a brief history of EAD development; to examine EAD encoding, format conversion, structure, and representation used in OAC; and to necessarily suggest that a customized EAD model should be developed for Korean contexts.

PD-DESYNC: Practical and Deterministic Desynchronization in Wireless Sensor Networks

  • Hyun, Sang-Hyun;Kim, Geon;Yang, Dongmin
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.13 no.8
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    • pp.3880-3899
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    • 2019
  • Distributive desynchronization algorithms based on pulse-coupled oscillator (PCO) models have been proposed for achieving collision-free wireless transmissions. These algorithms do not depend on a global clock or infrastructure overheads. Moreover, they gradually converge to fair time-division multiple access (TDMA) scheduling by broadcasting a periodic pulse signal (called a 'firing') and adjusting the next firing time based on firings from other nodes. The time required to achieve constant spacing between phase neighbors is estimated in a closed form or via stochastic modeling. However, because these algorithms cannot guarantee the completion of desynchronization in a short and bounded timeframe, they are not practical. Motivated by the limitations of these methods, we propose a practical solution called PD-DESYNC that provides a short and deterministic convergence time using a flag firing to indicate the beginning of a cycle. We demonstrate that the proposed method guarantees the completion of desynchronization within three cycles, regardless of the number of nodes. Through extensive simulations and experiments, we confirm that PD-DESYNC not only outperforms other algorithms in terms of convergence time but also is a practical solution.

A Study on Reconstructing Archival Appraisal Regime of Foreign Countries in Electronic Record Environments : Focusing on Archival Appraisal Strategies in a National Point of Views (전자기록 환경에서의 세계 각국 평가체제 개편에 관한 연구 - 국가적 차원의 영구보존기록 평가전략을 중심으로 -)

  • Kim, Myoung-Hun
    • Journal of Information Management
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    • v.39 no.2
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    • pp.95-130
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    • 2008
  • This article intends to provide a direction for reconstructing the national regime of archival appraisal in electronic record environments. Functional appraisal, which inevitably carries out for appraising electronic records, has defects in aspect of selecting archives important in a national point of views. To do so, this article discusses defects of functional appraisal, and then suggests the necessity of archival appraisal strategies that complements functional appraisal. To investigate this archival appraisal strategies, it analyzes Australia's Whole-of-Government Functional Analysis, United Kingdom's Acquisition Policy and Appraisal Policy, Germany's Cooperative Cross-Archives Appraisal and Canada's Macro Appraisal. Ultimately, this analysis is able to establish a base of the regime of archival appraisal which will harmonize primary value at current stage with secondary value at non-current stage in a national point of views.

Mapping Publication Pattern in African Journal of Library, Archives and Information Science, 2009-2018: An Informetric Study

  • Amusan, Blessing Babawale;Adeyoyin, Samuel Olu
    • International Journal of Knowledge Content Development & Technology
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    • v.12 no.1
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    • pp.17-34
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    • 2022
  • This informetrics study was conducted to find out the distribution of articles and authors that published in African Journal of Library, Archives and Information Studies [AJLAIS]) from 2009 to 2018; considering the year-wise growth of research articles; authorship pattern and collaboration ratio; subject and geographical distributions of authors; and authors' productivity level. A descriptive informetrics research design was adopted. Quota sampling technique was used to select all the articles published within the ten-year period. Data collected through a self-designed checklist was analyzed using frequency count and percentage. The findings revealed that 141 articles, contributed by 266 authors were published by AJLAIS during the period. An annual average growth of 1.20% was recorded. Overall year-wise authorship pattern revealed that majority of articles (62.41%) published in AJLAIS were multiple authored. Also, articles on Informetrics and ICT dominated the journal. Some subject areas not covered were identified such as: indexing and serial collections management. Average collaborative index across the 10-year period for the journal was 0.62. South Africa and Nigeria were the two major prolific contributors to AJLAIS, just as evidence-based research papers of survey type (65.25%) were the most common to the journal. There should be increased numbers of articles in each edition over the coming years, and awareness should be created by the publishers to familiarize the researchers with the publishing requirements of the journal. Also, LIS researchers should concentrate more on areas usually left untouched by previous studies. The study is original as no other similar study was found on publication pattern of articles in AJLAIS covering a ten year period of 2009-2018. The findings of the study will also serve as a feedback mechanism for the Publisher of the Journal and LIS researchers on how to improve the journal and LIS research in general.

Benzo[c]phenanthridine Alkaloids from Corydalis incisa

  • Kim, Dae-Keun;Eun, Jae-Soon;Shin, Tae-Yong;Eom, Dong-Ok;Lim, Jong-Pil
    • Archives of Pharmacal Research
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    • v.23 no.6
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    • pp.589-591
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    • 2000
  • Six benzo[c]phenanthridine alkaloids, corynoline (1), acetylcorynoline (2), corynoloxine (3), luguine (4), 6-oxocorynoline (5), and 12-hydroxycorynoloxine (6) were isolated from the aerial parts of Corydalis incisa, and 6 was isolated for the first time from nature. The structure was elucidated by NMR techniques.

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