• 디지털산업정보학회논문지
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• 제20권2호
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• pp.37-47
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• 2024

The food tech market, which uses artificial intelligence robots for the restaurant industry, is gradually expanding. Among them, the robot barista, a representative food tech case for the restaurant industry, is characterized by increasing the efficiency of operators and providing things for visitors to see and enjoy through a 24-hour unmanned operation. This research was conducted through text mining analysis to examine trends related to robot baristas in the restaurant industry. The research results are as follows. First, keywords such as coffee, cafe, certification, ordering, taste, interest, people, robot cafe, coffee barista expert, free, course, unmanned, and wine sommelier were highly frequent. Second, time, variety, possibility, people, process, operation, service, and thought showed high closeness centrality. Third, as a result of CONCOR analysis, a total of 5 keyword clusters with high relevance to the restaurant industry were formed. In order to activate robot barista in the future, it is necessary to pay more attention to functional development that can strengthen its functions and features, as well as online promotion through various events and SNS in the robot barista cafe.

• 방송공학회논문지
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• 제13권4호
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• pp.544-553
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• 2008

최근 영상 편집 기술의 발달과 더불어 시청자의 이해를 돕기 위해 인위적으로 자막을 삽입하는 경우가 늘고 있다. 인위적으로 삽입된 자막은 해당 장면의 내용이나 편집자의 의도를 잘 표현하고 있기 때문에 비디오 정보 검색(video information retrieval)이나 비디오 색인(video indexing)과 같은 응용에 유용하다. 기존의 자막 영역 추출 방법은 에지(edge), 색상(color), 텍스처(texture) 정보와 같은 하위 계층(low-level) 특징을 기반으로 하기 때문에 다양한 필체나 밝기 대비를 가진 자막이 동시에 나타나거나 복잡한 배경에 포함된 자막 영역의 경우 잘 검출하지 못한다. 이에 본 논문은 기존의 방법과는 전혀 다른 천이 영역 기반의 새로운 영상 내 자막 영역 검출 기법을 제안하고자 한다. 먼저, 영상 내 삽입된 글자 주변은 시청자에게 영상으로부터의 높이 감을 주기 위해 해당 글자와 다른 색으로 표현된다는 관찰 결과를 바탕으로 천이 지도를 생성한다. 생성된 천이 지도를 이용하여 후보 영역을 추출하고 상태 밀도 개념을 바탕으로 후보 영역 중에서 삽입된 자막 영역을 추출한다. 제안하는 알고리즘은 글자 색, 크기, 위치, 필체, 밝기 대비에 관계없이 적용이 가능하며, 다양한 언어에 관계없이 뛰어난 성능을 보인다. 또한, 프레임 간 자막 영역 업데이트를 통해 자막 영역 추출의 효율을 높였다. 다양한 영상에 대한 실험을 통해 제안하는 알고리즘이 효율적인 비디오 자막 영역 추출 방법임을 보이고자 한다.

• 한국시뮬레이션학회논문지
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• 제11권3호
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• pp.35-48
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• 2002

In the work presented here, we describe a method to extract TrueType features for supporting letter recognition. Even if variously existing document processing techniques have been challenged, almost few methods are capable of recognize a letter associated with its TrueType features supporting OCR free, which boost up fast processing time for image text retrieval. By reviewing the mechanism generating digital fonts and birth of TrueType, we realize that each TrueType is drawn by its contour of the glyph table. Hence, we are capable of deriving the segment with density for a letter with a specific TrueType, defined by the number of occurrence over a segment width. A certain number of occurrence appears frequently often due to the fixed segment width. We utilize letter recognition by comparing TrueType feature library of a letter with that from input word images. Experiments have been carried out to justify robustness of the proposed method showing acceptable results.

• Archives of Plastic Surgery
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• 제46권6호
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• pp.572-579
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• 2019

Background Even with satisfactory anastomosis technique and adequate experience of the surgeon, flap loss due to thrombosis can still occur due to the patient's underlying condition. Patients with hypercoagulability due to etiologies such as malignancy, hereditary conditions, and acquired thrombophilia are among those who could benefit from free flap procedures. This review aimed to evaluate the risk of free flap thrombosis in patients with hypercoagulability and to identify the most effective thromboprophylaxis regimen. Methods This review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline. The PubMed, Embase, and Cochrane Library databases were explored. Types of free flaps, types of hypercoagulable states, thrombosis prevention protocols, thrombosis complication rates, and flap vitality outcomes were reviewed. Samples from the included studies were pooled to calculate the relative risk of free flap thrombosis complications in patients with hypercoagulability compared to those without hypercoagulability. Results In total, 885 articles underwent title, abstract, and full-text screening. Six articles met the inclusion criteria. The etiologies of hypercoagulability varied. The overall incidence of thrombosis and flap loss in hypercoagulable patients was 13% and 10.3%, respectively. The thrombosis risk was two times higher in hypercoagulable patients (P=0.074) than in controls. Thromboprophylaxis regimens were variable. Heparin was the most commonly used regimen. Conclusions Hypercoagulability did not significantly increase the risk of free flap thrombosis. The most effective thromboprophylaxis regimen could not be determined due to variation in the regimens. Further well-designed studies should be conducted to confirm this finding.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1998년도 한국생물과학협회 학술발표대회
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• pp.292.2-292
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• 1998

No Abstract, See Full Text

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 1998년도 가을 학술발표논문집 Vol.25 No.2 (2)
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• pp.688-690
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• 1998

직업 선택의 과정에 있어 능력, 적성만큼 중요시 해야 할 것은 그 직업에 대해 흥미도이다. 특히 장애인들의 경우 직업을 준비하는 단계에서부터 어느 영역에 직업적 흥미가 있는가를 파악해야 하는 일은 중요하다. Text, Audio/Voice, Image등 멀티미디어 data를 이용, 흥미와 주의 집중을 높혀 직업적 흥미영역에 대한 정확한 data를 얻을 수 있는 시스템 개발이 필요하다.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1999년도 한국생물과학협회 학술발표대회
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• pp.208.1-208
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• 1999

No Abstract, See Full Text

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1998년도 추계학술대회논문집:21세기에 대비한 지능형 통합항만관리
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• pp.331-351
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• 1998

The main purpose of this study is to design the port maketing strategies for strengthening the competitive power of container terminal. So far many attempts have been to analyze the international competitiveness of the terminal. As a results, Six factors hypothesized by this study come from previous research analysis about customers preference for port selection. Those are Cost, Centrality, and Intermediacy, Free trade port, Inland transportation connections, Political and Economic institution, and Port facilities. This study analyze the most important factor about hub port, and transhipment port separately, though questionnaire analysis about users(shipper, shipping company, and freight forwarder) influenced on port selection. The results of this study were found as follows : Equations See Full-text

• 영어어문교육
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• 제17권4호
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• pp.49-74
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• 2011

The present paper aims to explore the role of non-negotiated input and output in language acquisition in the context of free Web chat. In order to examine how input and output contribute to language acquisition, with or without meaning negotiation, the present study examined a Korean EFL learner's chat data collected over 6 months. Chat texts across 43 chat sessions were analyzed, along with her comment notes and interviews. The input and output negotiated for meaning were traced throughout all sessions to find evidence that they were linked to acquisition. Other input and output in the interaction were also traced to ascertain if they contributed to acquisition. The chat text analysis, comment notes, and the interviews revealed that the opportunities of meaning negotiation in a free Web chat context was quite limited and that the learner acquired language even in the absence of meaning negotiation. The findings suggest that input and output via Web chat, whether negotiated or non-negotiated, play their respective roles, contributing to different aspects of acquisition.

• 한국정보과학회논문지:소프트웨어및응용
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• 제31권3호
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• pp.369-378
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• 2004

한국어나 일본어와 같이 부분 어순 자유 언어에서는 규칙 기반 방법이 구 단위화에 있어서 매우 유용한 방법이며, 실제로 잘 발달된 조사와 어미를 활용하면 소수의 규칙만으로도 여러 가지 기계학습 기법들만큼 높은 성능을 보일 수 있다. 하지만, 이 방법은 규칙의 예외를 처리할 수 있는 방법이 없다는 단점이 있다. 예외 처리는 자연언어처리에서 매우 중요한 문제이며, 기억 기반 학습이 이 문제를 효과적으로 다룰 수 있다. 본 논문에서는, 한국어 단위화를 위해서 규칙 기반 방법과 기억 기반 학습을 결합하는 방법을 제시한다. 제시된 방법은 우선 규칙에 기초하고, 규칙으로 추정한 단위를 기억 기반 학습으로 검증한다. STEP 2000 말뭉치에 대한 실험 결과, 본 논문에서 제시한 방법이 규칙이나 여러 기계학습 기법을 단독으로 사용하였을 때보다 높은 성능을 보였다. 규칙과 구 단위화에 가장 좋은 성능을 보인 Support Vector Machines의 F-score가 각각 91.87과 92.54인데 비하여, 본 논문에서 제시된 방법의 최종 F-score 는 94.19이다.