• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.624-626
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• 2022

최근 산업 현장에도 작업자들의 안전사고를 방지하기 위하여 인공지능 기법을 활용한 안전관리 시스템들이 도입되었다. 그러나 기존의 인공지능 기법을 활용한 방식은 데이터가 중앙 서버에 집중된 형태로 데이터 이동시 작업자의 민감 정보에 대한 보호가 어려울 뿐 아니라 대량의 데이터 발생 시 전체 시스템에 장애가 발생할 수 있어 이는 빠른 대응 프로세스가 필요한 산업 현장에 큰 영향을 줄 수 있다. 본 논문에서는 연합학습 기법을 적용하여 중앙 서버의 스트레스를 낮추어 작업자의 위험 상황에 빠른 대응이 가능하고, 작업자의 헬스 케어 데이터 같은 작업자의 민감 정보도 보호할 수 있는 시스템 설계를 제안한다.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.22 no.3
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• pp.161-168
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• 1989

To evaluate the quality of lipids and their fatty acid compositions in diploid and triploid carps(Cyprinus carpio), we analyzed the compositions of neutral lipid, phospholipid and glycolipid, and fatty acid contents of each lipids in these carp muscles. Total lipid contents of diploid carps, nonspawning season and spawning season, and triploid carp were $2.5\~3.0\%,\;1.4\~1.9\%\;and\;2.4\~3.1\%$, respectively. Regardless of belly and dorsal muscles, diploid carp of nonspawning season and triploid one were higher in neutral lipid, but lower in glycolipid and phospholipid than those of diploid one of spawning season. The neutral lipid and phospholipid were mainly consisted of triglyceride($66.9\~86.1\%$), and phosphatidyl-choline($55.6\~62.9\%$), respectively. In fatty acid compositions of total lipid, triploid carp showed higher content in monoenes such as 16: 1, 18: 1, but lower in polyenes such as 22:6 than those of diploid carp. The major fatty acids in total lipid were 18:1, 16:9, 18:2, 18:3 and 16:1 in order. The fatty acid compositions of neutral lipids showed similar trend to those of total lipid, and the major fatty acids in phospholipid were 16:0, 18:1, 18:2 and 22:6, These fatty acid compositions of neutral lipid, glycolipid and phospholipid were slightly difference between dorsal and belly muscles in all the carps.

• Korean Journal of Food Science and Technology
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• v.17 no.4
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• pp.289-294
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• 1985

Total lipid (TL) content of sea squirt (Ureungsweng-ee), Halocynthia roretzi, and Mideuduck, Styela clava, were 2.0%, 2.1%, respectively. Reviewing the composition of each lipid fraction in total lipids of sea squirt and Mideuduck, it was found that contents of neutral lipids (NL) (36.6%, 36.3%) and phospholipids (PL) (46.2%, 44.5%) were high, while that of glycolipids (GL) (17.2%, 19.2%) was low. The NL of sea squirt and Mideuduck were mainly consisted of triglyceride (49.0%, 59.6%) and free sterol (25.8%, 22.0%), and followed by diglyceride (9.4%, 7.7%), monoglyceride (6.0%, 4.2%), free fatty acid (4.6%, 1.9%) and esterified sterol and hydrocarbon (5.2%, 4.4%). And main lipids in PL were phosphatidylcholine (48.6%, 46.7%) and phosphatidylethanolamine (32.4%, 35.0%), and followed by phosphatidylinositol (9.8%, 7.0%), phosphatidylserine (5.7%, 5.8%) and an unknown substance (3.5%, 5.5%). Fatty acid composition was not significantly different among TL, NL, PL and GL contained in sea squirt and Mideuduck. The major fatty acids of TL in sea squirt and Mideuduck were eicosapentaenoic (21.3%, 18.3%), docosahexaenoic (16.3%, 14.2%), palmitic (13.8, 16.3%) and oleic acid (8.5%, 7.0%), respectively. Fatty acid composition of PL and NL were similar to those of TL. In case of GL fraction the major fatty acids were gadoleic (15.7%, 14.7%), palmitic (13.5%, 14.7%), stearic (11.6%. 9.8%) and oleic acid (8.0%, 8.1%).

• Journal of Applied Biological Chemistry
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• v.59 no.3
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• pp.243-245
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• 2016

The insecticidal toxicities of seven essential oils against Ricania sp. nymph and adults, newly recorded pest, were evaluated using leaf-dipping and spray methods. At 72 h exposure time, the $LC_{50}$ values of the essential oils of Artemisia vulgaris, Anethum graveolens, Citrus paradisi, Melaleuca alternifolia, Melaleuca leucadendron, Neroli bigarade and Tagetes erecta were 251.02, 387.31, 286.21, 353.54, 275.64, 424.55, $165.68mg/cm^2$ when using the leaf dipping method against Ricania sp. nymphs, and 278.31, 402.11, 306.11, 379.64, 298.22, 459.56, $183.21mg/cm^2$ when using the spray method against Ricania sp. adults, respectively. These results indicate that the essential oil of the Tagetes erecta can be potentially used as new natural insecticidal agents against Ricania sp. nymph and adults.

• Korean Journal of Medicinal Crop Science
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• v.8 no.2
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• pp.134-145
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• 2000

Growth and ecological differences of some important medicinal plants (Carthamus tinctorius, Astragalus membranaceus, Digitalis purpurea, Melissa officinalis, Anethum graveolens, Angelica gigas and Saururus chinensis) were observed at the different attitudinal sites of Mt. Halla in Cheju from 1997 to 1998. Growth of all medicinal plants was generally higher in the northern slope parts than in the southern slope parts. But at 50m above the sea level in the northern slope regions, the germination, growth and yield of Astragalus membranaceus and Digitalis purpurea were reduced by the wind. As the altitude was higher, the temperature was more slowly down in the northern slope regions than in the southern slope regions, while, the moisture was relatively high. The growth of Carthamus tinctorius, Melissa officinalis, Anethum graveolens and Angelica gigas were generally reduced by the higher altitude. On the other hand, growth of Saururus chinensis was good at the 700m above the sea level.

• Culinary science and hospitality research
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• v.18 no.1
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• pp.141-155
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• 2012

This study investigates social commerce purchasing to identify motivation and satisfaction after purchasing DDS(Daily Deal Service) and verify the moderating effects on DDS for useful information about social commerce of the foodservice industry. A survey was carried out from February 10 until March 3 in 2011, and a factor analysis and a reliability test was conducted to a total of 263 copies from the survey using SPSS 12.0. The proposed research hypotheses were verified through a multiple regression analysis and a moderated regression analysis. The results are as follows. First, among the social commerce factors, information quality and service quality had a positive(+) effect on buying motives while information quality and food quality had a positive(+) effect on post-purchase satisfaction. Second, as for DDS(Daily Deal Service) of a foodservice company, information quality, food quality and service quality were shown to play a moderating role for buying motives. Finally, as for DDS (Daily Deal Service), information quality, food quality and service quality were verified to play a moderating role for post-purchase satisfaction.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.115-118
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• 2008

The promotion of overseas projects by construction enterprises has appeared as a way to overcome the current business difficulties of the Korean construction industry, which largely caused by the slow growth of the domestic market and the intensified competition among construction companies. The government has also shown considerable interests in the strategic approach of promoting construction projects by private companies in natural resource-rich countries, which helps the internationalization of Korean companies and the acouisition of natural resources. In this regard, this research examines the status of the construction market in the Democratic Republic of the Congo(DRC) whose potential economic growth is considered as significant, while exploring the appropriate Investment strategies of Korean construction enterprise. Since little appears to be known about the construction market and economic conditions of the DRC, after a documented review of the development trajectory of the country, a field investigation was preformed in June 2008 for obtaining information on the subjects. This research finds that the road construction is the area to fulfill the several important criteria of implementing construction projects in developing regions, including the safety/reliability for gaining investment profits, the possibility of implementing construction projects on the gradual basis, the possibility of using the facilities after the project completion, and the linkage between payment and the construction stages. In regard to the current economic situation of the DRC and the policies of the DRC government, a package deal approach, which contains the exchange of the infrastructure construction by the Korean companies and the provision of natural resources by the DRC government, is the most feasible method for Korean companies to promote their businesses in the DRC's construction market.

• Analytical Science and Technology
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• v.10 no.2
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• pp.126-130
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• 1997

Electrochemical behavior of 1.0mM bis(2,2'-bipyridyl)copper( II )(${Cu(bpy)_2}^{2+}$) in 100mM NaCl+27mM $MgCl_2$ solution with and without sodium dodecyl sulfate(SDS) is investigated. In the presence of SDS, $E_{pa}$ and $E_{1/2}$ of ${Cu(bpy)_2}^{2+/1+}$ shifts to the positive direction compared to the SDS free. Teh intersection of two lines on ${\Delta}E_p$ vs. -log[SDS] plot for 1.0mM $Cu(bpy)_2(NO_3)_2$ in 100mM NaCl+27mM $MgCl_2$ solution is a critical micelle concentration(CMC). Reduced form ${Cu(bpy)_2}^{1+}$ in the presence of $MgCl_2$ is more easily associated to dodecyl sulfate anion($DS^-$) than oxidized ${Cu(bpy)_2}^{2+}$. As the ionic strength is increased by the addition of multiply charged cations($MgCl_2$), the double layer becomes more compact and micelle formation is more difficult.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.32 no.1 s.55
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• pp.17-22
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• 2006

Phosphatidyiserine (PS) is a phospholipid which plays the structural role in membranes and serves as a cofactor of signaling enzymes for diverse cellular functions. In this study, we observed that topical treatment with PS significantly decreased trans-epidermal water loss (TEWL) induced by tape-stripping in hairless mice. Also, ceramides in epidermis were increased in PS-treated group compared to vehicle-treated one in vivo. the amounts of non-hydroxyl ceramide (NHCER) (1.4 fold) and glucosylceramide (glucosylCER) (1.6 fold), in the skin of hairless mice, were increased by topical treament with PS. Also, we demonstrated that PS stimulated keratinocyte differentiation. We observed that PS treatment morphologically altered normal human keratinocyte (NHK) from the proliferating phase to the differentiating one, suggesting that PS stimulated epidermal differentiation in NHK. We also showed that the expressions of the specific markers for epidermal differentiation, involucrin (INV) (3.5 fold up) and transglutaminase 1 (TG'ase 1) (3 fold up), were significantly increased by PS treatment, compared to untreated control in vitro. In addition, topical treatment with PS resulted in a progressive increase in INV and loricrin protein levels in vivo. In conclusion, we provide the first evidence for the physiological activities of PS in skin, and we suggest that PS strengthen the epidermal permeability harrier by stimulation of keratinocyte differentiation.

• Journal of Convergence for Information Technology
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• v.11 no.6
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• pp.40-48
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• 2021

The paper dealt with the fact that the green deal took place when the demand for electrical energy surged. However, the procurement of electric vehicles and much of the electric energy of the future still depends on fossil fuels. Accordingly, the importance of the IT industry is highlighted, and the demand for hydrogen-electric vehicles and related industries increases. The method of this study investigated the relevance of EV charging as a future next-generation power source rather than the electric energy demand of the IT industry. This study derives the correlation between industrial electricity and household energy PPP according to economic growth through empirical regression analysis. As the result, it was found that the amount of change, including electric and next-generation electric vehicles, was significant for on thirds of the countries in the change in purchasing power compared to GDP. This affects overall purchasing power as twelve out of thirty two countries with EV demand (Italy, Canada, Switzerland, Poland, Slovenia, Germany, Slovakia, Finland, Sweden, Czech Republic, Estonia, Denmark) are more sensitive to electric energy. This is related to the charging of EVs or hydrogen as the next-generation power of the future rather than the electric energy demand of the IT industry. By preventing waste of unused electricity of IT-electric energy sources and charging-preserving hydrogen electricity, it seems indispensable to prepare for the national IT power conservation buffer facility for supply and demand in future growth.