A Study on the Fine Structure of the Marine Diatoms of Korean Coastal Waters - Genus Thalassiosira 4

정승원,Seung Won Jung,Jin Hwan Lee 한국조류학회I 2009 ALGAE Vol.24 No.2

The marine phytoplankton diatom Thalassiosira species are described from the Korean coastal waters, based on observations of fine structure of its frustules. As a fourth series, this study deals with 5 Thalassiosira species (T. decipiens, T. eccentrica, T. mala, T. nodulolineata, and T. proschkinae). The most striking features of these species are also the form and position of two processes on frustules. There is a central strutted process on valve face except T. nodulolineata, which has a modified one on its center. The external tubes of marginal strutted processes are divided two forms: “pile” form in T. decipiens and T. proschkinae, “short straw” form in T. eccentrica and T. nodulolineata. T. mala does not present the external tubes in valve margin. The labiate processes are located in valve margin except T. proschkinae, which has it on valve face. Of these, three species (T. mala, T. nodulolineata at a final contentration of 5% and T. proschkinae) were newly recorded in the coastal waters of Korea.

2002-2007년 통영바다목장해역에서 식물플랑크톤 현존량 및 생체량에 따른 우점종의 변동 및 관계

정승원,권오윤,이진환,Jung, Seung-Won,Kwon, Oh-Youn,Lee, Jin-Hwan 한국조류학회(藻類) 2008 ALGAE Vol.23 No.1

In order to understand variation and relationship between standing crops and biomass of phytoplankton dominant species for the long term periods, this study was seasonally investigated in the marine ranching ground of Tongyeong coastal waters from 2000 to 2007. Total 268 taxa representing 217 Bacillariophyceae, 46 Dinophyceae, 4 Dictychophyceae, 1 Euglenophyceae were observed in phytoplankton communities. Dominant species consisted of 5 species as standard in standing crops: Chaetoceros curvisetus (18.01%), Chaetoceros socialis (12.95%), Skeletonema costatum (8.39%), Chaetoceros compressus (6.87%), Asterionellopsis glacialis (5.02%). However, to determine dominant species as biomass concept, Ditylum brightwellii, Guinardia striata, Rhizosolenia spp. and Skeletonema costatum were occupied with dominant species (19.67%). As determining for cell sizes, dominant species were divided with two groups such as micro- and nanophytoplankton (standing crops) and mesophytoplankton (biomass). However, Skeletonema costatum in anophytoplankton was associated to affect fluctuation between standing crops and biomass.

폴리머 기판위에 형성된 나노구조제어 알루미나의 캐패시터 특성

정승원,민형섭,한정환,이전국,Jung, Seung-Won,Min, Hyung-Sub,Han, Jeong-Whan,Lee, Jeon-Kook 한국재료학회 2007 한국재료학회지 Vol.17 No.2

Embedded capacitor technology can improve electrical perfomance and reduce assembly cost compared with traditional discrete capacitor technology. To improve the capacitance density of the $Al_2O_3$ based embedded capacitor on Cu cladded fiber reinforced plastics (FR-4), the specific surface area of the $Al_2O_3$ thin films was enlarged and their surface morphologies were controlled by anodization process parameters. From I-V characteristics, it was found that breakdown voltage and leakage current were 23 V and $1{\times}10^{-6}A/cm^2$ at 3.3 V, respectively. We have also measured C-V characteristics of $Pt/Al_2O_3/Al/Ti$ structure on CU/FR4. The capacitance density was $300nF/cm^2$ and the dielectric loss was 0.04. This nano-porous $Al_2O_3$ is a good material candidate for the embedded capacitor application for electronic products.

악안면 기형의 상하악골 전후방적 위치관계에 대한 McNamara Analysis와 Delaire Analysis의 기준선 비교연구

정승원,김소미,변성수,박형식,정영수,Chung, Seung-Won,Kim, So-Mi,Byun, Sung-Soo,Park, Hyung-Sik,Jung, Young-Soo 대한악안면성형재건외과학회 2011 Maxillofacial Plastic Reconstructive Surgery Vol.33 No.4

Purpose: McNamara and Delaire analyses are two commonly used analytic methods, yet, they differ in their theoretic concepts and different reference lines are used for ideal surgical prediction. Therefore, the use of different analytic methods may result in different surgical plans. The purpose of this study was to compare the anterior and posterior relationship of the maxilla and mandible by using McNamara and Delaire analysis. Methods: 30 Korean patients (15 male and 15 female) who had visited the Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, for dentofacial evaluation were studied by using McNamara's and Delaire's analyses. Results: On the maxillary analysis, 26 out of 30 patients (86.7%) were in accordance. On the mandibular analysis, 20 out of 30 patients (66.7%) were in accordance. On the maxillary analysis, McNamara's analysis showed an average of 0.36 mm greater amount of prognathism compared to Delaire's analysis, and this was not statistically significant. On the mandibular analysis, McNamara's analysis showed an average of 6.03 mm greater amount of prognathism compared to Delaire's analysis, and this was statistically significant. On the mandibular analysis, 26 out of 30 patients (86.7%) showed a greater amount of prognathism on McNamara's analysis compared to that of Delaire's analysis. The remaining 4 patients (13.3%) showed the same amount of prognathism on both analyses. Conclusion: These results may serve as a reference for surgeons when determining which analytic method is to be used for optimal surgical results.

법규에 따른 자원회수시설의 건축적 형태에 관한 연구 - 서울과 도쿄를 중심으로 -

정승원,이강준,Jung, Seung-won,Lee, Kang-jun 인천대학교 도시과학연구원 2022 도시과학 Vol.11 No.1

Waste to Energy Plant were recognized as hateful facilities, and there were many conflicts in the location due to social problems such as the NIMBY phenomenon due to problems such as damage to property in the surrounding area, odor, and image loss. Problems such as air pollution and odor are solved by the development of advanced prevention facilities such as electric dust collectors, wet cleaning systems, semi-dry reaction towers, bag filters, and catalyst towers (SCR: Selective Catalytic Reduction), and air recycling facilities in waste storage tanks. However, it is being avoided because of the perception that it is an incinerator. To resolve these conflicts, the government installs and operates resident convenience facilities to compensate residents near resource recovery facilities, provides green space and improves the environment, and supports heating expenses in accordance with the 「Waste Treatment Facility Support Act」. The purpose of this study is to derive implications through the analysis of domestic and overseas case studies for resident convenience facilities and environment improvement for the promotion of local communities in resource recovery facilities and use them as basic data for community promotion and environmental improvement when installing resource recovery facilities in the future.

대추 추출물이 유산균의 생육에 미치는 영향

정승원,노완섭,Jung Seung-Won,Noh Wan-Seob 동아시아식생활학회 2006 동아시아식생활학회지 Vol.16 No.3

This study was carried out to survey the effect of Jujube extract on the growth of 3 strains of lactic acid bacteria(LBA) starter cultures in the MRS broth by the addition of 0, 0.1, 0.5, 1 and 2% extract The pH, titratable acidity and OD of LAB were investigated in order to get fundamental knowledge for the development a new product. The effects of Jujube extract on the growth of LAB were variable depending upon the LAB species and concentrations of Jujube extract significantly (p<0.05). In the results, Jujube extract enhanced the acid production and propagation by the 3 LAB strains with increasing concentration of Jujube extracts until 2.0% added was to the MRS broth medium (p<0.05). Addition of Jujube extract markedly stimulated the acid production and propagation of Lactobacillus acidophilus, Streptococcus thermophilus and Bifidobacterium longum.

Sourdough에서 분리된 유산균의 고농도 배양을 위한 중화제로서 Calcium Carbonate-Alginate Bead의 이용가능성 평가

정승원 ( Seung Won Jung ),이광근 ( Kwang Geun Lee ),김철우 ( Cheol Woo Kim ),이수한 ( Su Han Lee ) 한국산업식품공학회 2010 산업 식품공학 Vol.14 No.3

유산균을 고농도로 배양하기 위하여 CaCO3를 각각 15%와 20%씩 첨가하여 직경이 서로 다른 CaCO3-alginate beads를 제조한 후, lactic acid에 대한 CaCO3-alginate beads의 반응 특성과 완충효과를 관찰하였으며, lactic acid에 대하여 완충작용이 있는 CaCO3-alginate beads를 이용하여 S. thermophilus ST-Body 1과 L. amylovorus DU-21을 고농도 배양하여 직접투입식 starter를 제조하였다. 본 연구에서 제조된 CaCO3-alginate beads는 CaCO3, alginate 함량 및 수분 함유율이 beads에 일정하게 고루 분포되어 있으며, 일정한 밀도를 갖는 입자임을 알 수 있었다. 또한 lactic acid에 대한 beads의 반응은 표면으로부터 일어나기 시작하여 내부로 진행됨을 확인하였으며, CaCO3-alginate beads 양의 증가는 결국 lactic acid와 반응할 수 있는 CaCO3 표면적의 증가를 가져오게 되며, 단위시간당 lactic acid와 반응하는 CaCO3의 상대적 증가를 가져오기 때문에 CaCO3-alginate beads 양의 증가는 lactic acid 용액 내부의 중화작용의 증가를 가져온다는 것을 확인하였다. 즉, CaCO3-alginate beads의 직경이 작을수록, 내부의 CaCO3 함량이 높을수록, 단위 부피당 넓은 표면적과 높은 중화작용을 가지므로 CaCO3-alginate beads를 pH neutralizer로 이용하여 유산균을 배양할 경우에는 CaCO3 함량이 높고 직경이 작은 CaCO3-alginate beads의 이용이 유산균 배양에 효과적임을 알 수 있었다. CaCO3-alginate beads를 이용한 유산균의 고농도 배양 시, pH와 생균수와의 상관성과 선형관계를 단순회귀분석법(simple regression)을 이용하여 최소자승추정량(least square estimator; LSE)을 구하여 검증한 결과, 각 X의 회귀계수의 값은 통계적으로 유의한 결과(p<0.05, p<0.01)를 보였다. 또한 R2 값은 S. thermophilus ST-Body 1와 L. amylovorus DU-21의 경우, CaCO3-alginate beads 무첨가구와 첨가구에서 각각 0.6310, 0.7505, 0.7452, 0.7609이였다. 이는 pH가 균 증식에 다소나마 영향을 주는 것을 나타낸다. 고농도로 배양된 S. thermophilus ST-Body 1과 L. amylovorus DU-21 균주를 이용하여 직접투입식 starter를 제조한 결과, 동결건조 보호제로 15% glycerol을 이용하였을 때 각각 91.96±1.35%와 89.09±4.49%의 생존율을 보였다. 본 연구에서 확립된 기법은 probiotics 조제나 정장제 조제방법에 있어서도 공히 적용 가능하므로 미생물 세포의 이용기법으로 그 생존율과 발효에 연관되는 기능보존과 수반되는 여러 분야에 적용한다는 면에서 산업적으로 중요하다고 사료된다. Lab scale experiments were conducted in order to assess the applicability of CaCO3-alginate beads as neutralizer for the high cell density cultivation and prepare the direct vat inoculation cultures of isolated sourdough lactic acid bacteria. With increasing the amount of bead and decreasing the diameter of bead in acidic solution, the neutralizing effect of CaCO3-alginate bead became higher. In batch process with CaCO3-alginate beads, Lactobacillus amylovorus DU-21 isolated from sourdough showed the highest viable cell counts and optical density in MRS broth. The values of viable cell counts and optical density were 9.996 log CFU/mL and 3.97, respectively. Experiments on the conditions which increase viability during lyophilization were carried out and the following results were obtained; 15% glycerol revealed the high cryoprotective effect on the concentrated cultures during lyophilization among the two cryoprotective agents. Consequently, CaCO3-alginate beads and 15% glycerol were found to be useful not only to cultivate Lactobacillus amylovorus DU-21 but also to preserve strain.

가상현실 장치를 이용한 가상여행 응용의 동향 및 전망

정승원(Seung-Won Jung) 조선대학교 IT연구소 2016 정보기술융합공학논문지 Vol.6 No.1

비즈니스 어플리케이션 운영관리 하(下)에서 변경관리에 관한 연구

정승원 ( Seung Won Jung ),이석주 ( Seoukjoo Lee ) 한국정보처리학회 2015 한국정보처리학회 학술대회논문집 Vol.22 No.1

급속한 기술환경의 변화와 정보화 사회의 도래에 따라 시스템의 구축 비용보다 더 많은 비용이 유지보수에 투입되고 있다. 소프트웨어의 생명주기 측면에서 40~90%의 큰 비중을 차지하는 유지보수를 효율적으로 관리하는 것은 매우 중요한 문제이다. 이에 본 연구에서는 비즈니스 어플리케이션의 운영관리에 관한 사례를 유지보수 유형에 따라 분석하고, 이를 바탕으로 변경 관리의 개선 방향을 제시하였다.

세법상 파생상품의 평가방법에 대한 연구 ― 상속세 및 증여세법을 중심으로 ―

정승원 ( Jung Seung Won ) 연세대학교 법학연구원 글로벌비즈니스와 법센터 2017 연세 글로벌 비즈니스 법학연구 Vol.9 No.1

본 논문은 시가가 존재하지 않는 파생상품의 상속세 및 증여세법상 평가문제에 대하여 다루었다. 현재 파생상품은 상속세 및 증여세법상 과세대상이지만 특히 시가가 존재하지 않는 파생상품에 대해서는 그 평가방법이 명확하지 않은 상황이다. 이러한 불확실성으로 인하여 조세평등주의 및 재산권 침해, 평가 일관성 부족, 조세 회피 및 조세중립성 훼손, 상속세 및 증여세와 소득세의 이중과세 문제 등 여러 가지 문제점이 발생하고 있다. 이러한 문제점을 해결하고자 본 논문은 시가가 존재하지 않는 파생상품에 대하여 평가기준일 당시에는 원시 취득가액으로 우선 평가하여 과세하고, 처분ㆍ만기일에 정산하여 그 정산금액을 기준으로 기존 상속세 및 증여세에 추가적으로 과세ㆍ환급하는 방안을 제시한다. 해당 방법은 상속ㆍ증여 당시의 시가로 평가하는 일반적인 상속세 및 증여세법의 평가방법과 그 궤를 달리하지만, 현재 상속세 및 증여세법도 특수한 상황에서는 원래 과세되었던 증여세를 조정하는 사례가 존재하며, 특히 거의 유일하게 상속세 및 증여세법에서 파생상품의 평가방법을 제시하고 있는 전환사채 등의 경우에도 전환사채를 수취했을 때뿐만 아니라 주식으로 전환하였을 경우에도 증여세를 과세할 수 있도록 하고 있다. 물론 이러한 방법은 만기가 장기인 경우, 파생상품의 처분ㆍ만기ㆍ전환 등이 되었을 때 다른 증여문제가 발생한다면 적정한 방법이 아닐 수도 있는 등 문제점이 존재할 수 있으나, 앞에서 제시한 현재의 시가가 존재하지 않는 파생상품의 평가로 인한 문제점을 대부분 해소할 수 있는바, 논의할 가치가 있는 방안으로 판단된다. In this thesis, we deal with valuation of estate tax and gift tax law of derivatives without market value. Currently derivatives are subject to taxation under estate tax and gift tax, but valuation method for derivatives that do not have market price is not clear. This uncertainty poses various problems such as tax equality and property rights violation, lack of evaluation consistency, tax avoidance and tax neutrality damage, double taxation of gift tax and income tax. In order to solve these problems, this thesis proposes a method of evaluating derivatives with no market price at the time of the valuation date by the initial acquisition price. We calculate the value at the disposal / expiration date, and taxation, reimbursement of the established estate tax and gift tax are based on the settlement amount. This method differs from the general method of valuation of the estate tax law and gift tax law, which are valued at the time of inheritance and gift, but there are some cases where the established gift tax are settled in the originally taxed gift tax in special circumstances. Especially, in the case of convertible bonds, which offer valuation methods of derivatives in the gift tax law, it is possible to tax the gift tax not only when the convertible bonds are received but also when they are converted into stocks. Of course, this method, if expiration is long-term, can be problematic when other gift tax problems arise when the disposition, expiration, or conversion of the derivative occurs. However, it is worthwhile to discuss it in the evaluation of derivative products in which the present market value is not present.