• Proceedings of the Microbiological Society of Korea Conference
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• 2009.05a
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• pp.70-71
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• 2009

• Journal of the Korean Society for Library and Information Science
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• v.43 no.4
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• pp.193-215
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• 2009

A more sophisticated library collection policy is required due to the changing information environment. Both traditional resources and diversified networked information resources are increasing continuously. The National Library of Korea should construct a systematic collection development policy in order to fulfill its mission. The purpose of this study is to develop a basic framework that is intended to improve the coverage of national collection. Examining previous studies and the national collection development policies of major advanced countries, a model consisting of four sub-models has been proposed. It includes hybrid collection, cooperative linking collection, collection evaluation, and a collection policy statement. Details of the sub-models and strategies are described.

• Reproductive and Developmental Biology
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• v.31 no.4
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• pp.249-252
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• 2007

The objective of this study was to determine the effect of administration of Prostaglandin $F_2{\alpha}$ ($PGF_2{\alpha}$) on semen collection training and semen characteristics in sexually inexperienced boars. Boars were moved individually to a semen collection pen and were trained to mount dummy sow. During the first and second semen collection secessions, 4 out of 17 boars and 4 out of remaining 13 boars allowed collection of semen. The 9 boars that failed semen collection from first 2 attempts received immediately 15 mg of $PGF_2{\alpha}$ i.m. (intramuscular injection) upon entering the collection pen for semen collection resulted in successful semen collection from all 9 boars. Total numbers of spermatozoa were higher in $PGF_2{\alpha}$ treated boars but there was no significant difference in % motility kinematics characteristics between control and $PGF_2{\alpha}$ treated groups during 72 hr period. Overall, administration of $PGF_2{\alpha}$ in sexually inexperienced boars increased the sex drive and facilitated the mounting activity to the dummy sow for semen collection.

• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.59.1-59
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• 1999

No Abstract, See Full Text

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.06a
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• pp.106-106
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• 2017

The soybean [Glycine max (L.) Merr.] is one of the most important crop resources worldwide as food and forage. It is also important and valuable that to hold crop resources to have high genetic diversities. Recently, a core collection has been constructed in many plants to preserve the genetic resources of various plants. A core collection is small population to represent the genetic diversity of the total collection, and is of strategic importance as they allow the use of a small part of a germplasm collection that is representative of the total collection. Here, we developed the core collection consisting of 816 accessions by using approximately 180,000 (180K) single nucleotide polymorphisms (SNPs) developed in previous study. In addition, we performed genetic diversity and population structure analysis to construct the core collection from entire 4,392 collections. there were excluded sample call rates less than 93% and duplicated samples more than 99.9% according to genotype analysis using 180K SNPs from entire collections. Furthermore, we were also excluded natural hybrid resources which Glycine max and Glycine soja are mixed in half through population structure analysis. As a result, we are constructed the core collection of genetic diversity that reflects 99% of the entire collections, including 430 cultivated soybeans (Glycine max) and 386 wild soybeans (Glycine soja). The core collection developed in this study should be to provide useful materials for both soybean breeding programs and genome-wide association studies.

• Proceedings of the Microbiological Society of Korea Conference
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• 2005.05a
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• pp.187.2-187
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• 2005

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.20 no.2
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• pp.45-58
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• 2009

Due to the advent of knowledge-based society and digital environment, libraries especially national libraries are undergoing a transformation and the new concepts, processes and tools for collection development as the heart of libraries are evolving. The purpose of this paper is to propose the direction of hybrid resources development for ensuring sustainable collection and preservation of resources in national libraries. Accordingly, this paper looks about a transformation of national libraries and collection development, and investigates the coverage of national collections based positioning of national libraries through performance indicators in standard, definitions, purposes and missions. It also proposes legal deposit methods of digital resources through the law related library and investigates archiving method of online digital resources including hybrid collection development system in national libraries.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.08a
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• pp.47-47
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• 2020

The Korean National Agrobiodiversity Center holds the more than 1300 accessions of proso millet, but a large portion of accessions are landrace of Korea that has very similar traits. To comprehend the maximum genetic diversity of this crop, a core collection with minimum number of accessions will facilitate easy access to genetic material. Here we assessed the genetic diversity and population structure in a germplasm collection of 830 accessions by employing EST-SSR markers and morphological traits. A total of 107 alleles were detected with an average allele number of 4.9 per locus among the 830 accessions based on 37 EST-SSR markers. The number of alleles per locus ranged from 2 to 7. Polymorphism information content and expected heterozygosity ranged from 0.06 to 0.68 (mean = 0.21) and 0.06 to 0.73 (mean = 0.23), respectively. The germplasm collection was separated into two groups based on population structure analysis, whereas principal coordinate analysis (PCoA) could not cluster accessions according to their geographic origin. Subsequently, a preliminarily developed core collection with a total of 141 accessions (17%) was selected from the whole set of germplasm by combining allelic variations of EST-SSR markers and eight different phenotypic traits. The core collection optimally represented the whole germplasm collection and displayed a similar level of PCoA value and genetic variation from the initial collection. The results obtained here provide a primary resource for further genetic analysis and establish a reference for further development of appropriate genetic breeding strategies.

• Mycobiology
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• v.33 no.4
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• pp.178-181
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• 2005

Cordyceps militaris specimens were continuously collected by Entomopathogenic Fungal Culture Collection (EFCC), Kangwon National University from different mountains, national parks and recreation parks of Korea from 1986 to 2002, mainly from late May to October of each year. Dry specimens of C. militaris along with their isolates have been preserved in EFCC. Fruiting of C. militaris was induced from single ascospore isolates as well as their combinations in brown rice medium. Fruiting experiments showed that combinations of single ascospore isolates produced fertile fruiting bodies, but single isolates could not produce any fruiting bodies. It was shown that two isolates of the opposite mating types were required to produce fertile stromata. However, combinations of the same mating type isolates produced no fruiting body, showing that C. militaris is a bipolar, heterothallic fungus.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.21 no.4
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• pp.107-122
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• 2010

A national library bears responsibility to collect, develop, manage and preserve the national knowledge resources and heritages. The institution, in order to accomplish this duty, should center on systematically developed collection development policy. This paper, in this regard, strives to propose a model to comprise of basic principles of collection development of a national library in order for the effective management of resources by the types and subjects. Major emphasis was put on the nature of a national library as a legal deposit library, an information gateway, and a repository for national information resources. As a result, a model collection development policy appropriate for a national library has been proposed by analyzing cases in other countries to guide establishing principles for determining and analyzing the types and magnitude of the collection acquisition; by applying the Five-level conspectus to be optimal to collection magnitude; and, by identifying the essential elements in systematic development of national knowledge/information resources.