• 기술혁신연구
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• 제9권2호
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• pp.17-33
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• 2001

In the knowledge-based economy, technological knowledge (TK) is reckoned key subject of knowledge management. Despite growing recognition, it has long been considered an intractable task to develop precise measures of TK and, as a remedy, a number of R&D-related proxy indicators have been employed. Although voluminous previous research has examined the structure and process of technological innovation by using proxy indicators, the inquiry into the relationship among respective indicators has remained unexplored. In this research, we take three most frequent proxy indicators of TK, R&D human resources, R&D stock, and patents, and investigate the correlation among respective measures. In addition, the dynamic pattern of time lag between technological input and output is also analyzed.

• 대한치과교정학회지
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• 제16권2호
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• pp.31-41
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• 1986

The purpose of this study is to examine the initial reaction of craniofacial complex to the traction of headgears which are frequent used in dinical practice by using holographic interference method. Changes in the fringe pattern according to the traction conditions (outer bow length, load amount, direction) were compared. Human dry skull was used as experimental material, the results were as follows. 1. The density of fringes increased with an increase in load. 2. Maxillary headgear affected circummaxillary bones-temporal bone, zygomatic bone, nasal bone, frontal bone, sphenoid bone as well as maxilla. 3. The most upward-backward displacement was observed in a high pull head gear $(30^{\circ})$, this is though to be a optimal direction for supressing the growth of the maxilla.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2017년도 춘계 종합학술대회 논문집
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• pp.39-40
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• 2017

그래프 스트림 데이터에 대한 활용이 증가됨에 따라 빈발 패턴을 검출하는 연구가 활발하게 진행되고 있다. 본 논문에서는 슬라이딩 윈도우 내에 변경된 부분만을 계산하는 점진적인 빈발 패턴 검출 기법을 제안한다. 제안하는 기법은 윈도우에서 변경되는 부분만 계산함으로써 중복된 계산을 감소시킨다. 또한, 간선 관리 테이블을 이용해 관련이 없는 패턴들을 제거함으로써 의미 있는 빈발 패턴만을 검출한다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2017년도 춘계 종합학술대회 논문집
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• pp.19-20
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• 2017

최근 소셜 미디어와 센서 장비의 기술의 발달로 그래프 데이터의 양이 급격히 증가 하였다. 그래프 데이터의 처리 과정에서 I/O 비용이 발생하여 데이터가 많아지면 병목현상으로 인해 데이터의 처리와 관리에 있어 성능에 한계가 발생한다. 이러한 문제를 해결하기 위해 데이터를 메모리에서 관리하는 캐시 기법에 대한 연구가 이루어 졌다. 본 논문에서는 서브그래프 데이터의 접근 패턴을 고려한 캐싱 기법을 제안한다. 그래프 환경에서 그래프 질의 이력을 통해 패턴을 찾고 질의 관리 테이블과 FP(frequent pattern)-Tree 통해 선별된 데이터를 메모리에 적재시킨다. 또한, 캐시 실패(cache miss)가 발생 하였을 때, 주변의 이웃 정점을 같이 메모리에 적재시킨다. 메모리가 가득 찰 경우 캐시 된 데이터를 퇴출시키는 교체 전략을 제안한다.

• 대한수의학회지
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• 제17권1호
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• pp.5-8
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• 1977

One hundred and fifty seven Escherichia coli strains isolated from 18 cattle (9 dairy cattle received penicillin, streptomycin (SM) or sulfadimethoxine for treatment of diseases and 9 Korean native cattle not received antibiotics) were studied for the drug resistance and distribution of R factors. Of 88 E. coli strains isolated from cattle not received antibiotics, only 1 strain was resistant to SM, but about 46 per cent of 69 E. coli strains isolated from cattle received antibiotics were resistant to SM, tetracycline (TC), ampicillin (AP), kanamycin (KM), chloramphenicol (CM), and sulfisomidine (Su), alone or in combination thereof. Of resistant strains, about 72% were resistant to three or more antibiotics, but 28% were found to singly resistant. The most frequent resistant pattern was triple resistance to AP, KM and Su (37.6%), and quadruple one to SM, TC, CM and Su (12.5%). About 28% of resistant strains carried R factors which were transferable to E. coli ML 1410 $NA^r$ by conjugation.

• 대한세포병리학회지
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• 제2권2호
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• pp.98-104
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• 1991

We present the cytologic features of small ceil neuroendocrine carcinoma of the liver metastasized from the uterine cervix. Cytologically, tumor cells were arranged in a pattern of solid sheet in necrotic background. The tumor cells were characterized by uniform, small cells, round hyperchromatic nuclei, and high nuclear cytoplasmic ratio. The smears showed frequent mitotic figures and rosette formation. These findings were identified with the previous histologic sections of uterine cervix. To make a diagnosis of metastatic small ceil neuroendocrine carcinoma on the Papanicolaou smear, a high index of suspicion and careful review of clinical history are needed.

• 한국식품조리과학회지
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• 제18권1호
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• pp.109-118
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• 2002

The purpose of this study was to identify the behavioral, attitudinal, and demographic correlates of light, medium, and heavy users of eating out at family restaurants. Among 358 reponses from the subjects, 224 responses were utilized for the analysis, and 134 responses were reserved for validating the discriminant function. Descriptive statistics, reliability analysis, stepwise discriminant analysis, canonical discriminant analysis, and anova analysis were used for this study. The findings from this study were as follows: First, He behavioral characteristics were found to discriminate among the three usage groups. Second, it was found that heavy users expressed greater difference between perception and expectation on the quantity of food that are appropriately served and the consistent quality of food at every visit. Third, the usage rate of eating out was not dependent on the sex, but dependent on the companion, average expenditure, and the time of eating out in chi-square test. Finally, the results of the study provide some insight into the pattern of marketing strategies that can be successfully used by the managers of family restaurants.

• 대한가정학회지
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• 제42권1호
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• pp.153-166
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• 2004

The purpose of this study was to examine the internet shoppers' new purchase behavior, to examine the general purchase behavior(i.e., purchase pattern, preference), and to examine the related factors to promotion strategies(i.e., e-mail, event) of internet shopping mall. Focus group interviews were done with 40 internet shopping-mall users on May, 2003 for the data collection. Data were analyzed by content analysis and descriptive statistics(i.e., frequency, percent). The results of this study were as following. First, competitive price, accurate product and service information and convenience were considered as important factors in the new purchase behavior among internet shoppers. Second, the more frequent purchasing time through the internet shopping mall were on weekdays rather than weeekends and the most preferred information search engine were category type, item type, and price type in order. Third, e-mails from internet shopping mall were most likely opened by internet shoppers, that is to say, e-mail can be the efficient communication tool as well as the possible promotion strategies. Specifically, the title of email was considered as an important factor to approach the target consumers.

• 전자공학회논문지CI
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• 제43권5호
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• pp.17-28
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• 2006

본 논문에서는 데이터베이스에 새로운 트랜잭션이 추가되었을 때 순차 패턴을 갱신하는 문제를 연구하였다. 트랜잭션이 순차적으로 증가되는 환경에서 기존에 발견된 빈발 시퀸스를 재사용하여 순차패턴을 갱신하는 효율적인 알고리즘을 제안한다. 본 논문에서 제안한 방법은 후보 집합의 개수를 효율적으로 줄임으로써 AprioriAll이나 PrefixSpan 알고리즘보다 좋은 성능을 보임을 실험으로 확인하였다.

• Advances in pediatric surgery
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• 제9권1호
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• pp.24-29
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• 2003

To evaluate the clinical findings of the recurrent intussusception, 351 patients with 445 intussusceptions were reviewed. Recurrence rate, pattern of recurrence, reducibility, pathologic lead points (PLP), and operative findings and long term follow up of the multiple recurrences were analyzed. Of 351 patients, 303 had no recurrence, 26 had one recurrence, and 22 had multiple recurrences. Over all recurrence rate was 16.4% ; 18.5% were managed by air reduction, 16.2% by barium reduction and 5.9% by operation. Eleven PLPs were proved operatively and an additional 6 suspected PLPs were depicted radiologically. The most frequent PLP was ileal lymphoid hyperplasia. Intervals between reduction and recurrence were less than 2 weeks in 31 cases, between 2 weeks and 1 year in 55, and more than 1 year in 8. The longest interval was 2 years and 4 months.