• Archives of Pharmacal Research
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• v.16 no.3
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• pp.251-253
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• 1993

Several new coumarinoyl and coumarionyl-1, 2, 4-triazole derivatives were synthesised via dipolar cycloaddition reactions with 3-coumainohydraziodoyl halide. Structure were based on elemental analysis and spectral data.

• Archives of Pharmacal Research
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• v.13 no.3
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• pp.278-281
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• 1990

Two lingans were isolated from hexane-soluble fraction of Korean red ginseng. Their chemical structures were elucidated as gomisin N and gomisin A by spectrometric analysis.

• Archives of Pharmacal Research
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• v.6 no.1
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• pp.79-81
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• 1983

Several potent anti-herpes virus nucleosides, 2'fluoro-2'-deoxyarabinofuranosyl pyrimidine nucleosides, were prepared in good yields by a new condensation method using sodium iodide and a new solvent system, and FMAU could be also prepared directly from thymine by this method.

• Archives of Pharmacal Research
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• v.24 no.6
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• pp.508-513
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• 2001

2-(1-Hexynyl), 2-((E)-1-hexenyl) and $2-(n-hexyl)-N^{6}$-methyladenines were synthesized, starting from 2-amino-6-chloropurine using palladium-catalyzed coupling as a key step as potential adenosineo receptor ligand.

• Archives of Plastic Surgery
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• v.50 no.1
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• pp.1-2
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• 2023

• The Korean Journal of Archival Studies
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• no.53
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• pp.261-293
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• 2017

This study aims to introduce the system of records disposal freeze and to draw tasks and propose measure to establish it in the public sector in Korea. First of all, it reviewed the korean regulations and practices related to disposal freeze and suggestions in research paper. While analysing the disposal freeze systems of US and Australia, it identified that the systems were principally run by the National Archives. Thus, 2 cases analysis were conducted in each country. Based on these, this paper studied what should be considered and what could be proposed for the development of the system of records disposal freeze in terms of the regulation, implementations, standard notice statement as well as procedures for korean public records.

• The Korean Journal of Archival Studies
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• no.80
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• pp.167-196
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• 2024

This article argued for the need for a transformation of archives system and archival science through a review of the archival circles' discussion of dismantling and reconstructing the current national archive system. By sharply contrasting the cases of civil society 'archiving activities' with the cases of 'national archive sites', we attempted to present solutions to the current archive system from a micro perspective. In this process, the need for a shift in archival research methodology centered on archival materials was derived in relation to the deepening of awareness of archival information organization and hierarchical description to ensure archive accessibility and the meaning of policy shift.

• Journal of the Korean Graphic Arts Communication Society
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• v.29 no.1
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• pp.61-74
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• 2011

Critical environmental elements for long term preservation of a paper are temperature, humidity, dust, light, contaminants in air, and mold. Especially, temperature and humidity need special care, because they can not only directly degrade paper but also affect the degradation of the other elements. Therefore methods to monitor variation of temperature and relative humidity were studied. One of the methods was to use preservation index for evaluating preservation environment. Since the evaluation for preservation environment of a stack room investigated firstly by D. K. Sebera, PI(preservation index) and TWPI(Time-Weighted Preservation Index) by IPI is made to evaluate relatively preservation environment in a stack room. T. Padfield developed method which could calculate easy PI and TWPI. In this study, the preservation environment of stack rooms for paper storage in NAK(National Archives Korea) was evaluated by PI and TWPI. PI and TWPI of stack rooms for paper storage in NAK maintained good condition but PI depended on season. Then the preservation environment of stack rooms for paper storage in NAK was required to maintain continuously PI and TWPI regardless of season change.

• Journal of Korean Society of Archives and Records Management
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• v.10 no.2
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• pp.147-170
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• 2010

In this study, national web archiving cases were reviewed and interface types and characteristics were examined. Five interface categories and fourteen evaluation criteria were selected. As for the OASIS, Korean national web archiving project, functions of retrieval interface and user support interface were insufficient and need to be reinforced. Other recommended improvement plans were; diversifications of the subject area of web contents, sharing the web acquisition, make up the special collection, visualization of archiving time and trends, systematic performance of the archiving strategy, and active collaboration with international organization.

• 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.