• 수산해양교육연구
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• 제15권2호
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• pp.219-225
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• 2003

So far, for pearl culture using abalones, a plastic nucleus has been planted in an abalone by perforating the shell. But after planing 80 % of abalones died, and even if they live, the pearl's hardness was not so good. The weak hardness made the pearl valueless. The quality of a pearl is decided by the gloss and the quality of the pearl's layer. This study is to find the right nucleus for abalones and to decrease a death rate of abalones by selecting the right planting place. This study was also performed to obtain valuable pearls with proper size, gloss, and good color. Below is the result of the research; Conch shells out of the various nucleus materials were the best. Their shape, color and gloss were very good. The nucleus was planted in the part that a shell is grown up under the absorption ball, as a result a pearl sack was quickly made. After 15 days, out of every pearl, pearl sacks were made. The pearl formation was measured every month. From the abalone shell which was planted in April, qualitative pearls which was from 5mm to 5.81mm in size were obtained in December.

• 한국식품과학회지
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• 제19권2호
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• pp.164-170
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• 1987

강남콩과 대두를 삶아 분리한 고물의 미세구조를 광학 현미경 및 SEM으로 조사하고 그 화학조성과 조직감 특성을 비교하였다. 강남콩 고물의 경우 각각의 세포가 잘 분리되었으나 대두 고물은 여러개의 세포가 결학된 덩어리가 많이 포함되어 있었다. SEM 사진에 의하면 강남콩 고물을 구성하는 세포는 구형이었으나 대두 고물의 구성세포는 긴 자루 형태를 가지고 있었다. 펙틴질을 비교적 많이 함유하는 대두 고물의 경우 높은 접착성과 응집성을 나타내었다.

• 복식문화연구
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• 제2권1호
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• pp.55-76
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• 1994

The purpose of this study was to analyze the classification and meaning of symbols, of the clothes of the college students by sex-roll theory and identity theory. The clothes analyzed in this study were collected by photographs which were taken in the campus (240 out of 1,000 pictures) of the several colleges and universities in Seoul form fall in 1993 to summer in 1994. The results were as follow : 1. Analysis as a symbol of sexuality. The phenomenon of the visual inconsistency and consistency of sexual image in dress were showed simultaneously. The clothes of male students were generally becoming feminine style in materials and colors of clothes. These suggested that sex-roll theory be applied to their clothes. 2. Analysis as symbols of identification or individuality. The identification of shoes, bags, accessories, and hair styles were prominent than that of clothes. When it was analyzed as a symbol of individuality, the college students seemed to act as fashion leaders, who accepted new fashions and tried them on first. These suggested that Erikson′s theory on identity be applied to their clothes. 3. Analysis as a symbol of emblem. The dissimilarities of between the college students and other groups in the same generation were bright and casual attire with files, books, and sack. 4. Analysis as a symbol of campus ceremony. The clothes of college students on campus ceremonies were more causal and flexible than those of other groups in the same generation. It was known that the symbols showed above were reflected on their clothes as "one′s expressions" which are sex-roll, identity, and characteristics of college students.

• 한국응용곤충학회지
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• 제2권
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• pp.38-43
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• 1963

1) 본 시험은 1962년과 1963년의 2개연에 걸쳐 수원과 김해에서 이화명충방제를 위하여 수종의 공시농약과 비교 실시하였다. 2) $\gamma-dol$의 시용은 건사동율 혼합하여 손으로 수면에 시용하고 액제(Lebaycid Dipterex. B. H. C기타)는 분무기로 약면에 살포하였다. 3) 본 시험의 결과에 나타난 바에 의하면 타 약제에 비하여 $\gamma-dol$이 유효하였으며 수면시용시기는 부화 10일이내에 가장 효과적이었다. 4) 수원과 김해의 양지역에서의 시험결과를 비교해 보면 $\gamma-dol$ 지역적 효력차가 없는 것 같다.

• 복식
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• 제5권
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• pp.165-171
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• 1981

During the period of 3rd Tae-Jong and 4th Se-Jong, Yi Dynasty has established sound basis for ruling power and aristocratic social cast system. And the regulation for official dress has also been firmly established during the same period. The establishment of KWAN BOK SACK (Office of Hat-Dress) in 16th year of Tae-Jong (1416 A.D.) and the enforcement of KWAN BOK JI JAE (System of Hat and Dress) in 8th year of Se-Jong(1426 A.D) indicates the completion of system of official dress in the dynasty. In this study, the author tried to find out the concept of color in the ruling society since the concept of color in KWAN BOK JI JAE, which is the social reglation in the fendal dynasty, had greatly been influenced by these class of people. Effort has also been given to investigate what motivated the establishment and enforcement of KWAN BOK JI JAE, through the descriptions revealed in SE-JONG SILLOK. It can be concluded in the first that, in KWAN BOK JI JAE no new color concept appeared and its significance only remains on the fact that it establshed the social regulations which were existed before. And secondly, the works of Se-Jong in KWAN BOK JI JAE, in contrast to his magnificance in other fields, only showed great influence of toadyism (Chinese culture).

• 한국통신학회논문지
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• 제32권10B호
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• pp.638-643
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• 2007

본 논문에서는 이질적 무선망 중에서 3G 셀룰러 망에서 WLAN으로 넘어가는 하향식 핸드오버에 초점을 맞추고 단말의 이동성에 따른 TCP 전송 프로토콜의 성능을 향상시키기 위한 기법을 제안한다. 하향식 핸드오버를 전후로 한 링크의 특성은 급격히 변화하게 되는데 특히 사용 가능한 대역폭이 급격하게 증가하고 RTT (Round-Trip-Time)는 감소하게 된다. 이 때 핸드오버 전후로 전송되는 패킷의 순서는 뒤바뀌게 되어 TCP는 false fast retransmission을 함으로써 TCP의 성능을 저하시킨다. 본 논문에서는 이러한 문제를 해결하기 위한 새로운 리오더링 (reordering) 기법을 제안하여 핸드오버로 인한 TCP성능 저하 현상을 막고자 한다.

• 한국통신학회논문지
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• 제28권12B호
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• pp.1106-1114
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• 2003

지금까지 TCP (transmission control protocol)의 성능을 분석하고 예측하기 위한 많은 모델들이 제시되어 왔다. TCP의 처리율을 모델링을 통해 정확하게 분석하기 위해서는 보다 정확한 TCP의 종단간 전송 지연(latency)을 모델링하는 것이 필요한데, 이를 위해서는 손실 복구 과정에서 발생하는 지연이 필수적으로 고려되어야 한다. 따라서 본 논문에서는 재전송에 의해 복구되는 패킷 손실의 개수를 고려한 손실 복구 확률을 기초로 손실 복구과정에서 발생하는 지연(loss recovery latency)을 모델링을 통해 분석한다. 수학적인 분석과 시뮬레이션을 통해 선택 승인(selective acknowledgement) 옵션을 사용하는 TCP의 성능이 TCP NewReno보다 손실 복구 지연 차원에서 우월하다는 것을 보인다.

• ALGAE
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• 제21권2호
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• pp.175-183
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• 2006

Recent phylogenetic studies of scytosiphonacean brown algae show many conflicts with current classification. In order to clearly define the phylogenetic relationships of the family, we newly sequenced the photosystem I coding psaA gene (1488 base pairs) from 13 taxa (15 samples), of the family, and, for comparison, rbcL from four taxa. The psaA region has more informative sites (17.9%) than the rbcL (13.1%) and the number of nodes supported by over 50% bootstrap values is more in the psaA phylogeny (53 /57 nodes; 93%) than in the rbcL (47/63 nodes; 74.6%). The psaA phylogenies are basically congruent with the rbcL trees, recognizing two major groups in the monophyletic Scytosiphonaceae. The first group included Myelophycus, Petalonia, Scytosiphon, and elongate sack-shaped species of Colpomenia, primarily cold temperate elements with unilocular zoidangia on sporophytes. The second group, although not resolved, consisted of Hydroclathrus, Chnoospora, Rosenvingea, and ball-shaped Colpomenia, primarily warm-temperate taxa with both unilocular and plurilocular zoidangia on sporophytes. Chnoospora is not monophyletic, as was previously shown the paraphyly of Colpomenia, Petalonia, and Scytosiphon. Hydroclathrus clathratus from Korea and Japan was not monophyletic. Our studies show that gametophytic characters are the main source of conflict for the present taxonomy of the family. The psaA region is a useful tool for resolution of phylogenetic relationships within the Scytosiphonaceae.

• 산경연구논집
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• 제4권2호
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• pp.5-11
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• 2013

Purpose - Considering the importance of education as the base for countries' development, the results of various studies show that accounting education is not reconciled to business environment changes with huge defects in methods of education and knowledge transition. Research design, data, and methodology - By reviewing current research and considering the effect of 12 factors, the study traces and detects why accounting education is far from the business environment from viewpoints of academic and practitioner bodies. After testing for validity and reliability, 225 questionnaires were administrated among representatives of three groups. Results - Respondents were not satisfied with lack of specification of various scientific areas of accounting, that less attention is paid to accounting software education, and about the rarity of workshops for performing accounting skills and discordance between accounting education and standard rules. Conclusion - These findings agreed with Albrecht and Sack (2001) who stated that the current style of accounting education is very cluttered and incomplete and needs major adjustments: subjects of accounting education must be based on the grounds of work needs not on willing academics.

• 한국의류학회지
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• 제12권1호
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• pp.1-11
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• 1988

This study dealt with the Dopo, one of the representative ceremonial dress that acclasical scholar used after the middle of the period of the Chosun dynasty. This study represents the period of Dopo's formation and its origin, and the characteristics of the weary of Dopo in Young Dong Province Area is arranged by folkloric method on the base of the exisitng facilities. Dopo has worn since the middle of the period of the Chosun dynasty. It is the kind of Jig young Po that its back is cuffed for convenience and has another cloth as a ceremonial dress. It is thought to be one of the national customs pos formed by the mixture of the big sleeve type which is influenced by confusion life feeling. It seemed that the name of DoPo comes from the Jigchal, an ordinary dress of a high official in China, which is call Dopo. This Dopo is changed and received and so disappeared but it is still used such as ceremonial dress, the necessary articles for marriage of the bride, a bridegroom's liturgical vestments of a memorial service held on the anniversary of the death of a person, mourning dress and a shroud grave clothes. This area has different characters on wearing customs. It is changed into the kind of Dopo, with its back not cutting. The hemp sack is almost used as its subject matter. It doesn't have collar strip for the classification of one's family in any case, and Dopo which is prepared for necessary articles for marriage can not be taken tack after seperating by divorce.