• Journal of the Korean Geophysical Society
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• v.3 no.4
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• pp.261-268
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• 2000

Minimum magnitudes $(M_c)$ for estimation of seismicity parameters were analyzed for the earthquake catalog of Korea Meteorological Agency (KMA). The temporal variation of earthquake frequency suggests that a proper $M_c$ be 3.0 for the whole southern part of the Korean Peninsula. The b-value with $M_c$ of 3.0 is estimated to be 1.11, which is larger than those of the previous studies. To see the spatial variation of $M_c$, the southern part of the peninsula were divided into grids of $0.1{\times}0.1$ degree. At the greater portion of grid points, the local earthquake catalogs do not satisfy given statistical criteria. The grid points whose local earthquake catalogs meet the criteria mostly distribute in the eastern part. $M_c$ at these points range 2.4 to 3.5 and b values range 0.75 to 1.73 with the average of 1.08 which is comparable to that for the whole southern part of the peninsula.

• Journal of Information Management
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• v.43 no.4
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• pp.97-117
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• 2012

The purpose of this study is to present the design of search interface of mobile catalog of University libraries by identifying the current situation of search interface of mobile catalog of domestic and overseas academic libraries and users' preferences derived by survey, and reflecting the combined results. The investigation on current situation of search interface of mobile catalog of domestic University libraries was carried out by using checklist for functional assessment targeting 82 mobile catalogs. For overseas examples, contents and functional elements about 15 mobile catalog search interface of academic libraries in England and US were examined and analyzed. In addition, three domestic University libraries's mobile catalogs were selected as research targets and the survey was carried out to identify the situation of use of mobile catalog and preference on search interface.

• Journal of Information Management
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• v.34 no.3
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• pp.41-67
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• 2003

With the rapid and broad changes of information ecology human information activity is moving toward a new pattern-networking. Various types of information networks are being constructed over the world, and through the networks various forms and contents of information are being flowed or transferred. Under these circumstances a serious question could arise regarding whether the present cataloging principles and practices are right and appropriate for the so-called 'digital network generation of library users'. This study was developed to explore this question. Especially, this study conducted an analysis on the utility of library catalog with an emphasis on the perspectives of library users. As a result, it turned out that the quality of library catalogs produced by Korean universities was in a very low standard. The degree of satisfaction on the quality was very low, particularly among library users. In conclusion, this study made several suggestions on the cataloging policy and practices: both at the national level and the unit library level.

• Journal of Korean Library and Information Science Society
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• v.50 no.3
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• pp.71-95
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• 2019

With high interest in linked data, there are various attempts to accommodate the linked data model in cataloging process. This study intends to discuss how to adopt and make the best use of linked data based bibliographic framework in order to improve the quality of library catalogs and to enhance library services in Korean libraries. To the end, this study focuses on (1) discussion of the meaning of linked data from the library cataloging perspective, (2) tracking best practices for implementing and operating linked data among North American and Europe libraries and bibliographic networks (in detail, constructing various types of ontology, developing linked data model including BIBFRAME and OCLC linked model, and improving retrieval service and interface), and finally (3) exploring problems and the anticipated challenges to transition to the linked data model in Korea. The data for discussion were collected from literature review and case study.

• Journal of KIISE:Databases
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• v.33 no.1
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• pp.102-116
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• 2006

Electronic catalogs (or e-catalogs) hold information about the goods and services offered or requested by the participants, and consequently, form the basis of an e-commerce transaction. Catalog management is complicated by a number of factors and product classification is at the core of these issues. Classification hierarchy is used for spend analysis, custom3 regulation, and product identification. Classification is the foundation on which product databases are designed, and plays a central role in almost all aspects of management and use of product information. However, product classification has received little formal treatment in terms of underlying model, operations, and semantics. We believe that the lack of a logical model for classification Introduces a number of problems not only for the classification itself but also for the product database in general. It needs to meet diverse user views to support efficient and convenient use of product information. It needs to be changed and evolved very often without breaking consistency in the cases of introduction of new products, extinction of existing products, class reorganization, and class specialization. It also needs to be merged and mapped with other classification schemes without information loss when B2B transactions occur. For these requirements, a classification scheme should be so dynamic that it takes in them within right time and cost. The existing classification schemes widely used today such as UNSPSC and eClass, however, have a lot of limitations to meet these requirements for dynamic features of classification. In this paper, we try to understand what it means to classify products and present how best to represent classification schemes so as to capture the semantics behind the classifications and facilitate mappings between them. Product information implies a plenty of semantics such as class attributes like material, time, place, etc., and integrity constraints. In this paper, we analyze the dynamic features of product databases and the limitation of existing code based classification schemes. And describe the semantic classification model, which satisfies the requirements for dynamic features oi product databases. It provides a means to explicitly and formally express more semantics for product classes and organizes class relationships into a graph. We believe the model proposed in this paper satisfies the requirements and challenges that have been raised by previous works.

• Journal of the Korean Society of Clothing and Textiles
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• v.22 no.4
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• pp.442-451
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• 1998

The purpose of this study was to investigate the current brand of mail-order clothing, consumers' attitude over importance of brand and the effectiveness of brand when consumers purchase clothing by mail-order shopping. for this study, mail order catalogs were analyzed and the samples were collected through the questionaire distributed to 214 women. It was analyzed by SAS package. The results are as follows; 1. As a result of mail-order catalog analysis, domestic clothing included few famous brand except foreign brand. 2. The users of mail-order purchasing were old and married women comparably. They were also high clothing-expense users and housekeepers. Item that consumers wanted to buy using mail-order shopping were home-wear, night-wear, accessories and scarves which were involved low risks comparably. 3. Consumers regard brand significantly as a means of credit in purchasing mail-order shopping clothing. In analysis between importance of mail-order clothing brand and demographics, degree of education and clothing expense per month showed significant difference.

• The Bulletin of The Korean Astronomical Society
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• v.40 no.1
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• pp.74.1-74.1
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• 2015

'The one to one correspondence model' defines the relation between a dark matter halo (DM halo) and a galaxy. A basic assumption of this model is that a more massive DM subhalo hosts a brighter galaxy. In a more improved version of the model we may be able to assign a mock galaxy with a morphological type. In this study, we are building a mock galaxy catalog using massive halo merging trees from the Horizon Run 4. We test various merging models to calculate the merging time scale of a subhalo along its merging tree. And we obtain the halo mass functions for major subhalos and satellite subhalos, separately, and compare them with the observed luminosity functions of major galaxies and satellite galaxies from the SDSS group catalog. Furthermore, we are going to make a range of mock galaxy catalogs and investigate their properties, such as spatial distributions, environmental effects, and morphologies.

• The Bulletin of The Korean Astronomical Society
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• v.40 no.1
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• pp.57.3-57.3
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• 2015

We present a test observation result of the KMTNet Intensive Nearby Southern Galaxy group Survey (KINGS). The KINGS is designed to study nearby galaxy groups (NGC 55, NGC 253, NGC 5128, and M83 groups), taking the advantage of the wide field coverage of the KMTNet. The main goal of the KINGS is to produce extensive catalogs of dwarf galaxies, ultra compact dwarfs (UCDs), and intraglobular clusters in the galaxy groups. We will also investigate the spatial distribution of intragroup light in each group. We present a progress report of the project based on the test BVI observations of two galaxy groups. We discuss the result from the test observation and possible improvement for future observations.

• Publications of The Korean Astronomical Society
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• v.27 no.4
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• pp.147-148
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• 2012

We present a photometric catalog of infrared (IR) sources based on the North Ecliptic Pole Wide field (NEP-Wide) survey of AKARI, which covered a 5.4 $deg^2$ circular area centered on NEP. The catalog contains about 115,000 sources detected at the 9 IRC filter bands, comprehensively covering a wavelength range from 2 to $24{\mu}m$. This is a band-merged catalog including all of the photometry results from the supplementary optical data as well as the IRC bands. To validate a source at a given IRC band, we searched for counterparts in the other bands. The band-merging was done based on this cross-matching of the sources among the filter bands. The NIR sources without any counterpart in any other bands are finally excluded to avoid false objects.

• Publications of The Korean Astronomical Society
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• v.27 no.4
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• pp.149-150
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• 2012

We have created new catalogues of AKARI/IRC $2-24{\mu}m$ North Ecliptic Pole Deep survey through new methods of image analysis. In the new catalogues the number of false detection decreased by a factor of 10 and the number of objects detected in multiple bands increased by more than 1,500 compared to the previous work. In this proceedings the new methods of image analysis and the performance of the new catalogues are described.