• 정보과학회 논문지
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• 제45권3호
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• pp.280-287
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• 2018

최근 추천시스템과 데이터 분석 분야에서 고차원 형태의 텐서를 이용하는 연구가 증가하고 있다. 이는 고차원의 데이터인 텐서 분석을 통해 더 많은 잠재 요소와 잠재 패턴을 추출가능하기 때문이다. 그러나 고차원 형태인 텐서는 크기가 방대하고 계산이 복잡하기 때문에 텐서 분해를 통해 분석해야한다. 기존 텐서 도구들인 rTensor, pyTensor와 MATLAB은 단일 시스템에서 작동하기 때문에 방대한 양의 데이터를 처리하기 어렵다. 하둡을 이용한 텐서 분해 도구들도 있지만 처리 시간이 오래 걸린다. 따라서 본 논문에서는 인 메모리 기반의 빅데이터 시스템인 아파치 스파크를 기반으로 하는 텐서 분해 도구인 S-PARAFAC을 제안한다. S-PARAFAC은 텐서 분해 방법 중 PARAFAC 분해에 초점을 맞춰 아파치 스파크에 적합하게 변형하여 텐서 분해를 빠르게 분산 처리가능 하도록 하였다. 본 논문에서는 하둡을 기반의 텐서 분해 도구와 S-PARAFAC의 성능을 비교하여 약 4~25배 정도의 좋은 성능을 보였다.

• 정보관리학회지
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• 제32권2호
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• pp.63-86
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• 2015

본 연구는 최근 많은 이슈가 되고 있는 빅데이터를 도서관 분야에 적용하여 다양한 형태의 도서관 빅데이터의 활용 가치에 대한 이해를 높이고 이에 대한 수요자의 요구 분석을 바탕으로 공공도서관 빅데이터 서비스 모형을 개발하는 것을 목적으로 하고 있다. 이를 위해 도서관 빅데이터의 개념과 내용 및 가치 등을 고찰하고, 도서관 빅데이터 서비스에 대한 수요 분석을 바탕으로 도서관 빅데이터 서비스 모형을 개발하였다. 서비스 모형 개발을 위해 도서관 빅데이터의 유형에 따라 활용 가능한 도서관 빅데이터를 분석하였으며, 수요자의 요구를 다양한 방법으로 도출하였다. 수요자의 요구 분석은 도서관계 연구자 및 현장 사서와의 심층인터뷰, 표적집단인터뷰(Focus Group Interview, 이하 FGI), 사서 및 이용자 설문조사를 통해 이루어졌다. 이를 바탕으로 총 16개의 도서관 빅데이터 서비스 모형을 정의하고, 서비스의 필요성, 시급성, 개발 가능성을 고려해 최종적으로 사서 의사결정 지원 서비스와 이용자 도서 추천 및 독서이력 관리 서비스 모형을 개발하였다.

• 한국식생활문화학회지
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• 제13권5호
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• pp.423-430
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• 1998

The purposes of this study were to (a) measuring attitude and satisfaction of Yonsei university students towards contracted vs. rented university foodservices, (b) determine university students' overall satisfaction & perception regarding the factors improved towards university foodservice and (c) provide recommendation on marketing strategies for university foodservices. Questionnaires were hand delivered to 600 Yonsei University students by designated coordinators. A total of 549 questionnaires were usable; resulting in an 93% response rate. The survey was conducted between October 12 to October 18, 1995. Statistical data analysis was completed using the SAS Programs for descriptive analysis, T-test, ${\chi}^2-test$, ANOVA, Factor Analysis and Stepwise Multiple Regression. The results of this study can be summarized as follows: 1. Performance mean score for contracted foodservice management in terms of food, menu, price, hygiene, facilities was higher than for rented foodservice management. 2. The average satisfaction score for contracted foodservice management in terms of price was lower than for rented foodservice management. There was no gap between contracted foodservice management and rented foodservice management in overall satisfaction score and price satisfaction score. 3. Perception regarding the factors improved of thirteen factors to be improved except operating hours, waiting time, price, food quantity were perceived as better by students. 4. Perception regarding the factors improved have correlation with foodservice qualify attribute's performance. 5. According to multiple regression analysis, 92.05% of the variance in respondents' satisfaction score could be explained by procedure after meal, purchasing procedure, operating hours, availability of breakfast, waiting time, atmosphere, price, facilities, service endeavor to survey satisfaction in foodservice, availability of kitchen and wall space, portion size, taste of food, change of cafeteria name, the number of seats, and variety of menu.

• 수산해양기술연구
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• 제46권4호
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• pp.466-475
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• 2010

This study intends to present a direction for the better reforming of fishers'onboard living conditions and proposals for preparing for ratification of the Work in Fishing Convention by means of making a comparison between standards on recent national fishing vessel accommodation facilities and standards on the Work in Fishing Convention and Its Recommendation, 2007, ILO. For the most part of standards on national fishing vessel accommodation facilities are somewhat insufficient to satisfy the provisions in Annex III of the Convention. Considering by items on fishing vessel accommodation facilities, the standards on insect protector, noise and vibration, heating and air conditioning, lighting, persons per sleeping room, recreational facility are not provided in national law. Headroom, separation of accommodation, sleeping room floor area, mattress size, mess room, galley and food storage are partially sufficient for the Convention. In case of sanitary facilities, national standards are not sufficient for the Convention. The other side, facilities related safety of ship and crew such as emergency escape etc., are fully sufficient for the Convention. These insufficiencies caused by different types of fishing vessel depend on originality of fishing method and practices. In the comparison between equivalent tonnage about vessel's length on convention and calculated tonnage of national existing fishing vessel, the difference are 226tons about length 24m and 501tons about length 45m. For that reason, headroom, persons per sleeping room, cabin of sicker and injured, sanitary facilities may decide to use gross tonnage in place of length (L) and the alleviating measure basis of convention. But in case of standards on sanitary facilities which are unsufficient for the Convention, specially in coastal fishing vessel length basis should be adopted with alleviating basis for less than length 24m.

• 방송공학회논문지
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• 제13권5호
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• pp.612-621
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• 2008

이용 가능한 데이터 영역과 전송전력 등 다양한 제한 요소들로 인하여 지그비 통신의 기술규격에는 음성통신에 대한 기준 사양이 포함되지 않았다. 본 논문에서는 지그비의 기반인 IEEE 802.15.4 표준에 적용하기 위한 음성부호화 기법이 제시된다. 여기서는 높은 압축율과 파형 복구능력이 우수한 파형부호기의 실현이 필수적이다. 이를 위하여 제시된 방법에서는 다단 이산 웨이블릿변환과 두 가지 펄스부호변조로 구성된 이진부호기가 사용된다. 이론적인 분석과 실내 무선 환경에서의 모의실험 결과 2단 웨이블릿변환을 적용한 경우가 압축율과 음성신호 복구능력 면에서 가장 적합한 것으로 판단된다. 직선전파경로 성분이 지배적인 경우 제시된 방법은 중간 정도의 신호 대 잡음비에서도 만족스러운 복구능력을 가진다. 따라서 제시된 음성부호화 방법은 향후 지그비를 이용한 음성통신의 표준 선정에 참고 가능한 기술이 될 수 있을 것으로 사료된다.

• 한국식품영양학회지
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• 제31권3호
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• pp.395-399
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• 2018

The objective of this study is to analyze characteristics of high sodium intaker and factors affecting sodium intake using the Korea National Health and Nutrition Examination Survey (KNHANES). For this study we used two statistical methods, the cluster analysis and one-way analysis of variance (ANOVA). Cluster analysis was used to classify groups of sodium intake. For the analysis of the factors affecting sodium intake, we applied the ANOVA. The average daily intake for Korean is about 3,783 mg sodium per day; this amount is high than recommendation of the WTO. The demographic characteristics of people with higher sodium intake were found to be men more so women, and younger men with a higher education. Height, weight and size of a person's waistline were also characteristics of those with higher sodium intake. Also worker, smoker, those without a hypertension diagnosis, as well as those with a higher the drinking rate and higher eating out frequency tended to have a higher intake of sodium. The Ministry of Food and Drug Safety (MFDS) had established a plan to reduce sodium intake to 3,500 mg per day to 2020. To achieve this goal, it is necessary to educate people about high sodium intake, particularly those at higher risk, according to the results of this study. Through these efforts, the social costs of high sodium intake could be reduced, improving national health.

• 재활간호학회지
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• 제3권2호
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• pp.212-227
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• 2000

The purpose of this study was to investigate the patterns of alternative therapy and to describe the characteristics of cancer patients used alternative therapy. The sample of this study were 232 consisted of cancer patients who visited at Pusan National University Hospital, Dong-a, Kosin University Hospital. The data were gathered from August, 1 to October, 30 1999 and analyzed by using SPSSWIN program for frequency, percentile and $X^2$-test. The important results of this study are as follows. 1. In population-sociological characteristics, sexual distribution showed female 52.6%, and the male 47.4%, age distribution showed that more than 60year old group are most as 31.5%. 2. In the disease characteristics, colon and rectal cancer patients were most as 19.0%. In the type of pain, the most of subjects were "dully pain" as 25.4%. In the pain level, 134 subjects complained pain, mean maximal pain score was $7.3{\pm}2.29$ in 10 points rating scale. 3. 132 patients (56.9%) among 232 cancer patients had used alternative therapy. The most common type of alternative therapy was dietary and nutritional therapy 44%, the place of use. home 43.2%, duration, less than 3 months, 56.8%. The most common motive was a recommendation by friends or family. The degree of satisfaction after the use of alternative therapy was high for 22.0%. 4. In the relation between general characteristic and utilization of alternative therapy, the only living area was showed a significant statistical differance($X^2$ = 4.070, P= .044). also in the relation between disease characteristic and utilization of alternative therapy, morbidity periods, the size of higher pain, the type of treatment were showed a significant statistical differance($X^2$= 7.964, 7.303, 3.565, P=.044, .026, .042). In conclusions, these findings indicate that cancer patients use various complementary and in alternative therapy. therefore, suggested that medical doctors or nurses verify the true effects or side-effects from the most common complementary or alternative therapies through experiments.

• Journal of Pharmaceutical Investigation
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• 제34권3호
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• pp.229-254
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• 2004

The objective of this study was to scrutinize the rationale of SUPAC-MR and its application in processing postapproval changes to modified release solid oral dosage forms. The types of postapproval changes that were primarily covered with SUPAC-MR included variations in the components and composition, the site of manufacturing, batch size, manufacturing equipment, and manufacturing process. SUPAC-MR defined levels of postapproval changes that the industry might make. Classification of such categories was based on the likelihood of risk occurrence and potential impact of changes upon the safety and efficacy of approved drug products. In most cases, the changes could be classified into 3 levels. It described what chemistry, manufacturing, and control tests should be conducted for each change level. The important tests specified in SUPAC-MR were batch release, stability, in vitro dissolution, and in vivo bioequivalence tests. It then suggested what type of a filing report should be submitted to the FDA for each change level. In general, level 1 changes could be reported in an annual report, whereas level 2 and/or 3 changes could be submitted in changes-being-effected or prior approval supplements. It could be understood that the purpose of SUPAC-MR was to maintain the safety and quality of approved modified release solid oral dosage forms undergoing certain changes. At the same time, it contributed to providing a less burdensome regulatory process with the manufacturers when they wanted to make postapproval changes. European regulatory agencies also implemented SUPAC-like regulations in handling such changes to drug products. Therefore, in this study a recommendation was made for KFDA and the Korean industry to evaluate thoroughly the usefulness of these guidances and regulations in dealing with postapproval changes to modified release solid oral dosage forms.

• KDI Journal of Economic Policy
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• 제14권2호
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• pp.77-108
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• 1992

흔히 우리의 취약한 기술력은 GNP에 대한 R&D 투자비중이 낮은 것으로 대변되고 있고, 기술개발투자의 확대가 기술력 향상과 동일시되고 있다. 그러나 산업발전단계(産業發展段階)에 따라 개발대상(開發對象) 기술(技術)의 구성(構成)이 달라지므로 선진국에 비해 R&D 비중이 낮다고 하여 반드시 기술개발 노력이 부진한 것은 아니다. 한국(韓國)은 기술개발에 투입할 경제여력이나 그것을 담당할 수 있는 고급 인력의 공급측면에서 선진국에 비해 절대적 열세에 처해 있는만큼, 연구개발투자(硏究開發投資)의 절대 수준도 중요하나 기술개발(技術開發)의 성과(成果)를 극대화하기 위한 기술의 획득(獲得) 및 습득과정(習得過程)의 효율화(效率化)에 최선을 다해야 할 것이다. 산업경쟁력(産業競爭力) 향상을 위한 기술개발정책(技術開發政策)의 기본방향(基本方向)은 국내산업의 기술발전단계와 연구개발의 국내기반에 입각하여 기술개발투자(技術開發投資)의 효율화(效率化)를 위한 국제화(國際化) 전략(戰略)의 전개, 기업중심의 연구개발(硏究開發) 네트워크의 고도화, 공공연구기관의 정예화(精銳化) 및 대학의 연구활성화(硏究活性化)를 유도해 나가는 것으로 요약된다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1991년도 하계학술발표회 한국항해학회
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• pp.45-48
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• 1991

This work aims to introduce the concept of microcomputer aided port design simulation methodology including the analysis of the mathematical models to be implemented and apply it to the Third Stage Busan Part Development Project. In the Busan case study the size of the proposed turning basin of the new terminal together with the operational stra-tegies of berthing and unberthing was examined In addition the safety of ships' entry and exit through the projection new breakwaters was as-certained. From the application of simulation to the Busan project it was found that the proposed dredging area was not sufficiently wide enough for a modelled container ship to perform A type unberthing (in which the ship turns to port as she monoeuvres away from No.1 berth with the ass-istance of tuges) especially in a strong easterly wind., It is therefore recommended that Busan pilots should be advised to use B type unberthing strategy in which the ship goes astern from No.1 berth to the turning area in front of No.2 berth(where the ship turns 180 degrees clockwise) especially when the wind is very strong. It is also recommended that a sea buoy be placed outside the new breakwaters as this was found to im-prove the safety of ship manoeuvres through the breakwaters significant-ly. Another recommendation is that the Korean Hydrodynamic Office carry out a detailed survey of the currents in the water area near the new breakwaters. once they have been constructed. In addition it is to be recommended that a current meter be placed at the recommended sea buoy pardised by erroneous current information