• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2000.10a
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• pp.21-26
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• 2000

This paper gives a general introduction on the development of Chinese marine aids to navigation. It also briefs some modern technology applied in this field. In the paper, an outlook is described for the development of our marine navaids in the next five-year period.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.5
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• pp.537-550
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• 2018

The development focus of a smart city has been changed gradually from a physical development aspect to a space development aspect. In a space development aspect, the major application technologies are Environment Technology (ET), Information Technology (IT) and Environment Information Technology. On the other hand, it is unclear if the space convergence in a smart city has been changed by the 3 technologies. Therefore, specific analysis was performed on the convergence change of smart city 4 spaces (District, Street, Building, Facility) using the 3 technologies. The convergence distribution ratio according to the periods (period 1 : 1972~1999, period 2 : 2000~2009, period 3 : 2010~2017) among the spaces, ET (Environment Technology), IT (Information Technology), ET+IT (Environment Information Technology) in a smart city were examined. The smart city was high in the order of 'District (53/43%) - Building (36/29.1%) - Street (22/17.9%) - Facility (12/10.0%)' in the number of applications and ratio of convergence (Technology Convergence) at Period 1 (1972~1999). The smart city was high in the order of 'District (223/32.4%) - Building (197/28.6%) - Street (195/28.3%) - Facility (74/14.8%)' in the number of applications and ratio of convergence (Technology Convergence) at Period 2 (2000~2009). At period 3, the District (467/33%) was also the highest. On the other hand, the street (384/27.4%) was higher than the building (361/25.8%) and facility (188/13.4%) in smart city space. Fourth, the smart city was high in the order of 'District - Building - Street - Facility' in the number of applications and ratio of convergence (Technology Convergence) at Periods 1 (1972~1999) and 2 (2000~2009). In contrast, the average of number was high in the order of 'Building - Street - District - Facility'. At period 3(2010~2017), the number of applications and the ratio of convergence was high 'District - Street - Building - Facility'; the average of number was the same as in period 1 and 2. As a result, smart city space has been changed by the development of macroscopic urban spaces in the initial stage. Since then, district space-centric development and building space are confused with devices/technologies and changed for citizen inflow. The building space has evolved continually and smart city space will be expected to revitalize the street space connecting completed buildings.

• Plant Biotechnology Reports
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• v.2 no.3
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• pp.207-212
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• 2008

Plantlets of Alocasia amazonica regenerated under a photon flux density (PFD) of 15 or $30{\mu}mol\;m^{-2}s^{-1}$ showed better growth and development than those grown under higher PFDs. While chlorophyll a and chlorophyll b decreased, the number of stomata increased with increasing PFD. Photoperiods also affected plantlet growth and stomatal development. Highest growth was observed for the short photoperiod (8/16 h) and for equinoctial (12/12 h) light and dark periods. Very few stomata developed in the leaves of plantlets grown under a short photoperiod (8/16 h) and the number of stomata increased with increasing light period. In conclusion, both light intensity and photoperiod independently affect growth of A. amazonica and development of stomata, depending on the intensity and duration of light treatment.

• Journal of the Korea Safety Management & Science
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• v.14 no.4
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• pp.321-332
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• 2012

The special organization that our military service is conscripted by the duty of national defense purposes to the period of military service. So couple of soldiers are think as the corresponds to college, or some knowledge layer from the operating management discarding period, lifetime value. But, now a day changed of the military life, it is when the individual soldiers can have some self-development and the lifelong education in terms of a period, and can changeing the footsteps of the new life that the function as a 'bridge' to activate production of barracks life. So that it can be supported themselves need to strive for human resource development. This study is being discussed on the correlation of military human resources and qualified operating and sustainable and promising future eligibility for qualified by taking advantage of the Boston Consulting Group Matrix(Boston Consulting Group Matrix).

• Korean Journal of Veterinary Service
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• v.41 no.2
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• pp.85-89
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• 2018

This study was conducted to demonstrate the prevalence of subclinical ketosis in dairy cattle based on days in milk and herd level. Four to five blood samples were collected in five different lactation periods and analyzed for ${\beta}$-hydroxybutyrate using a Portable Ketone Test Kit. Subclinical ketosis was observed in 12 herds at prevalence of 6.3~57.1% depending on herd level, with four herds showing more than 40% subclinical ketosis prevalence. The distribution of subclinical ketosis in the early lactation period, high yield lactation period, mid lactation period, late lactation period and dry period was 9.5%, 27.5%, 36.8%, 27.9% and 12.5%, respectively. Clinical ketosis was only observed during early lactation (9.5%) and mid lactation (2%) period.

• Molecules and Cells
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• v.41 no.8
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• pp.753-761
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• 2018

Tumor necrosis factor receptor-associated factor 6 (TRAF6) is identified as a signaling adaptor protein that regulates bone metabolism, immunity, and the development of several tissues. Therefore, its functions are closely associated with multiple diseases. TRAF6 is also involved in the regulation of hematopoiesis under steady-state conditions, but the role of TRAF6 in modulating hematopoietic stem and progenitor cells (HSPCs) during the developmental stages remains unknown. Here, we report that the deletion of TRAF6 in hematopoietic lineage cells resulted in the upregulation of HSPCs in the fetal liver at the prenatal period. However, in the early postnatal period, deletion of TRAF6 drastically diminished HSPCs in the bone marrow (BM), with severe defects in BM development and extramedullary hematopoiesis in the spleen being identified. In the analysis of adult HSPCs in a BM reconstitution setting, TRAF6 played no significant role in HSPC homeostasis, albeit it affected the development of T cells. Taken together, our results suggest that the role of TRAF6 in regulating HSPCs is altered in a spatial and temporal manner during the developmental course of mice.

• The Journal of the Convergence on Culture Technology
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• v.3 no.4
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• pp.67-76
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• 2017

The Gaya Period is the period in which the nations of Gaya had existed in the Gimhae area. The term 'The Period of the Three Nations', which is widely used, is inappropriate because in ancient Korea, Gaya also existed besides Goguryeo, Baekje and Silla. This term should be corrected for the accurate reconstruction of the history of ancient Korea. Of course, the term 'The Gaya Period' cannot replace 'The Period of the Three Nations'. It just means the period in which the nations of Gaya existed. The Gaya Period refers to the period of about 600 years from about the first century, in which several nations of Gaya began to appear in the Gyeongsangnamdo area, through the falls of Daegarak of Kimhae in 532 A.D. and Daegaya of Goryeong in 562. When doing this, there should be no distortion of the original form of the relics. With the application of traditional techniques and excellent relics, it is believed that it helps to create the high added values by putting culture and tourism together with the development of various designs of cultural goods. To suggest possibility of jewelry designs by completing protype from idea scatch.

• The Journal of the Convergence on Culture Technology
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• v.6 no.4
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• pp.103-113
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• 2020

The Gaya Period is the period in which the nations of Gaya had existed in the Gimhae area. The term 'The Period of the Three Nations', which is widely used, is inappropriate because in ancient Korea, Gaya also existed besides Goguryeo, Baekje and Silla. This term should be corrected for the accurate reconstruction of the history of ancient Korea. Of course, the term 'The Gaya Period' cannot replace 'The Period of the Three Nations'. It just means the period in which the nations of Gaya existed. The Gaya Period refers to the period of about 600 years from about the first century, in which several nations of Gaya began to appear in the Gyeongsangnamdo area, through the falls of Daegarak of Kimhae in 532 A.D. and Daegaya of Goryeong in 562. When doing this, there should be no distortion of the original form of the relics. With the application of traditional techniques and excellent relics, it is believed that it helps to create the high added values by putting culture and tourism together with the development of various designs of cultural goods. To suggest possibility of scarf designs by completing protype from idea scatch.

• The Journal of the Convergence on Culture Technology
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• v.4 no.4
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• pp.21-30
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• 2018

The Gaya Period is the period in which the nations of Gaya had existed in the Gimhae area. The term 'The Period of the Three Nations', which is widely used, is inappropriate because in ancient Korea, Gaya also existed besides Goguryeo, Baekje and Silla. This term should be corrected for the accurate reconstruction of the history of ancient Korea. Of course, the term 'The Gaya Period' cannot replace 'The Period of the Three Nations'. It just means the period in which the nations of Gaya existed. The Gaya Period refers to the period of about 600 years from about the first century, in which several nations of Gaya began to appear in the Gyeongsangnamdo area, through the falls of Daegarak of Kimhae in 532 A.D. and Daegaya of Goryeong in 562. When doing this, there should be no distortion of the original form of the relics. With the application of traditional techniques and excellent relics, it is believed that it helps to create the high added values by putting culture and tourism together with the development of various designs of cultural goods. To suggest possibility of necktie designs by completing protype from idea scatch.

• Journal of Agricultural Extension & Community Development
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• v.7 no.1
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• pp.45-64
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• 2000

The purposes of the study were to identify the present status of the agricultural extension services in Korea and its surrounding environment, and to search the desirable ways of improvement under the serious restructuring period occurred by the nation-wide localization, globalization and development of information technology. Agricultural extension services have made great accomplishment in the education for rural people and agricultural technology diffusion, but agricultural extension service system no longer well fits in the changed environment. Agricultural extension services in Korea should restructure the system, function and methods in order to cope with the changing technology and rural society. The objectives of the extension services should be clear and simplified so that the extension workers can understand their role and duty more clearly. The local governments should encourage the extension workers to carry out their services diligently and with the pride. Also, the extension workers should change their mind to fit in the changing world and should improve their capability for their services.