• Journal of the Korean Society for information Management
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• v.35 no.1
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• pp.33-59
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• 2018

This study draws on the current momentum to diversify open government data research through multidimensional scaling and model development. It formulates a quality assessment model applicable to library open data, taking into consideration the paucity of such research in the field. The model was developed using the Delphi method and verified for validity and reliability on the basis of a survey administered to library open data users. The results of the fourth round exhibited an average of 4.00 for all measured elements and a minimum validity of .75, rendering the model appropriate for use in quality assessments of library open data. The convergence and stability results provided by the expert panel fell below .50, confirming that there was no need to conduct further surveys in order to establish the validity of the Delphi method. The model's reliability likewise garnered results of .60 and above in all three dimensions. This Model completed with the input of the Delphi panel was put through a verification process in which library open data users such as domestic and international librarians, developers, and open data activists reviewed the model for validity and reliability. The model scored low on validity on account of its failure to load all measure factors and elements pertaining to the three dimensions. Reliability results, on the other hand, were at 0.6 and above for all dimensions and measured elements.

• Bulletin of the Korean Chemical Society
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• v.33 no.1
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• pp.149-152
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• 2012

The (S)-(+)-decursin and its analogues are reported as potent inhibitors of melanin production in B16 murine melanoma cells. In order to understand the factors responsible for potency as well as inhibition of potency of (S)-(+)-decursin and its analogues, three-dimensional quantitative structure-activity relationship (3D-QSAR) studies were performed. Since receptor structures are not available, a pharmacophore model was constructed. Using PHASE, we generated 3 different models and selected the seven-site model, which returned excellent statistical values ($r^2$ = 0.9127, $Q^2$ = 0.6878, Pearson-R = 0.9014). Using the generated pharmacophore model, we screened a natural products library and obtained 4'-epi-decursin as the most related compound. 4'-epidecursin is similar to (S)-(+)-decursin, but shows additional interaction possibilities with tyrosinase. The study thus sheds some light on possibility of developing more potent tyrosinase inhibitors.

• Journal of Information Management
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• v.39 no.1
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• pp.83-108
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• 2008

This thesis investigated disabled students' actual status of applying for university libraries. This thesis investigated how many times the university disabled students utilized the libraries, if facilities, apparatuses, materials, and regular employees were operated properly, and if they were established actually on the target at thirty private university libraries located at Seoul and Gyeonggi regions in operation of specially screening the objective students for special education in 2008. The investigation found that the general operation level of university libraries for disabled students were less than "medium"(average 2.38). As for utilization ratio, the most university students responded that "they didn't utilize libraries so many times(60%)". As for the response ratio of university library facilities and services, the most university students responded, "very insufficient", 99 items(32.27%), and the least university students responded, "very excellent", 28 items(7.0%). On the other hand, as for the analysis of each field, building facilities, in all of the items, were established more than "medium"(average 3.26), but material preparation level(average 1.8 point), employee education for softly supporting disabled students, and library utilization education on the target at disabled students(average 1.87) were less than "insufficient". Especially, the field of service was "insufficient level"(average 2.48), and standard deviation was more than 1.4. Manpower stationing and material delivery services have the biggest standard deviation between universities. So, this investigation found that university libraries reformed access to facilities a lot, but that its level of fundamental policy for library, such as materials, manpower, and the education on utilization, were in insufficient level.

• Journal of the Microelectronics and Packaging Society
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• v.8 no.1
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• pp.19-25
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• 2001

In this paper, the design and simulation results of IF frequency synthesizer section has been described. We has been used 0.8 $\mu\textrm{m}$ BiCMOS device and library of the AMS. IF frequency synthesizer section has been contained IF VCO, Phase Detector, Divide_by_8, Charge Pump and Loop Filter. IF frequency synthesizer has been shown operating voltage of 2.7~3.6 V, control voltage of 0.5~2.7 V and supply current of 11 mA. The measured results have been showed good agreement with the simulation results about supply current.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.21 no.3
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• pp.91-107
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• 2010

This study was conducted to grasp senior education programs with the purpose of providing senior education services and researching program development of public libraries for elderly population of an aging society. Senior education programs provided by 33 Senior Welfare Centers and 41 public libraries in Seoul were compared in terms of, 6 subjects such as health, literacy/education, information education, death preparation education, hobbies and employment/volunteer. The Senior Welfare Center provided much more senior programs, whereas the public libraries appeared that the number of institutions participating in senior services was very few, and the program provision for elderly population appeared to be extremely insufficient. A specific course schedule of the program of 'making of a happiness map' of death preparation education, which is one theme among them, was developed.

• Journal of the Korean Society for Library and Information Science
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• v.47 no.3
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• pp.343-361
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• 2013

We proposed and evaluated a tag semantic analysis method in which original tags are expanded and the semantic relations between original or expanded tags are used to extract key sentences from lecture speech transcripts. To do that, we first investigated how useful Flickr tag clusters and WordNet synonyms are for expanding tags and for detecting the semantic relations between tags. Then, to evaluate our proposed method, we compared it with a latent semantic analysis (LSA) method. As a result, we found that Flick tag clusters are more effective than WordNet synonyms and that the F measure mean (0.27) of the tag semantic analysis method is higher than that of LSA method (0.22).

• Journal of the Korean Society for Library and Information Science
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• v.47 no.3
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• pp.385-406
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• 2013

This study redefines information literacy (IL) and recommends its contents and media (platforms). Redefinition of IL was based on concepts such as 'Information Literacy 2.0', 'Social Context', 'Metaliteracy', 'Transliteracy', 'Social Media Literacy' and related researches. 'Social Relationship', 'Media Convergence', 'Critical and Evaluative Insight on Information' was extracted by major contents of new IL. To determine program methods, mass media's 'ubiquity' was applied to the study. Some social statistics reports proved that ubiquity of social media is quite high. Finally, proposed empirical study of IL using social media by follow-up study.

• Journal of Korean Library and Information Science Society
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• v.21
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• pp.431-457
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• 1994

The aim of this thesis is to attempt a bibliographical analysis of mathematical materials that were published during Yi-Dynasty. In this study, matters that were treated concretely are the same as follows: 1. Formulation of a system about mathematical materials that were published from Three Kingdoms to Yi-Dynasty. 2. Background of each period about compilation and publication of mathematical materials. 3. Investigation to transition, block book and domain of subject of mathematical materials through analysis on each period of publication. But it was not easy to contrast materials on each catalogue with existed books one by one. In further, we must a new chance for better a n.0, ppreciation about Yi-Dynasty's mathematical materials through continuous studies to this field.

• Journal of Korean Library and Information Science Society
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• v.22
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• pp.245-276
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• 1995

This study analyzed the process of information service and its factors in the cognitive viewpoint. And developed a conceptual model to help in developing future information systems and services. The results of this study were summarized as follows : 1) The paradigm of information user study is changing from the system-centered to the user-centered one. 2) The researchers describe the user's internal cognitive process as the starting point of the information service. 3) The user's personal cognitive process influence the process of the information service over. And the focus is a microscopic one including the factors of the perception and recognition of the stimulus, remembering and searching information, reasoning the rules, recognition of the patterns, formalization of the concepts, etc. 4) The information librarian performs the role as a knowledge/ information system interface, and his knowledge structure reflects the organization of that knowledge/information system. 5) The information librarians can perform their role as information specialists actively and offensively. And the performance of the librarians can be measured on the scales of the su n.0, pplying capability of relevant information and the client satisfaction.

• Journal of Korean Library and Information Science Society
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• v.22
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• pp.299-325
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• 1995

The aim of this thesis is to attempt a bibliographical analysis of Gu Geub Eui Seo that were published during Yi-Dynasty. In this study maters that were treated concretely are the same as follows: 1. Formulation of a system about Gu Geub Eui Seo that were published from Three Kingdoms to Yi-Dynasty. 2. Background of each period about compilation ad publication of mathematical materials. 3. Investigation to transition, block book and domain of subject of Gu Geub Eui Seo through analysis on each period of publication. But it was not easy to contrast materials on each catalogue with existed books one by one. In further, we must a new chance for better a n.0, ppreciation about Yi-Dynasty's Gu Geub Eui Seo through continuous studies to this field.