• 정보처리학회논문지A
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• 제15A권6호
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• pp.345-350
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• 2008

최근에 병렬처리를 위한 새로운 위상으로 하이퍼 스타 연결망 HS(2n,n)가 제안되었다. 하이퍼 스타 연결망은 하이퍼큐브와 스타 그래프의 성질을 가지고 있으면서, 같은 노드수를 갖는 하이퍼큐브보다 망비용이 우수한 연결망이다. 본 논문에서는 하이퍼스타 연결망 HS(2n,n)에서 에지 중복 없는 스패닝 트리를 구성하는 알고리즘을 제안한다. 그리고 제안한 알고리즘에 의해 구성된 에지 중복 없는 스패닝 트리가 에지 중복없는 최적 스패닝 트리임을 증명한다.

• 한국정보과학회 언어공학연구회:학술대회논문집(한글 및 한국어 정보처리)
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• 한국정보과학회언어공학연구회 1999년도 제11회 한글 및 한국어 정보처리 학술대회
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• pp.199-202
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• 1999

ETRI 통신단말연구부에서는 1999년 7월 22일에 C-STAR 회원국이 함께 참여하는 국제간 음성언어번역 시스템 공동 시연을 가졌다. 이 논문은 다국어 대화체 번역시스템인 음성언어번역 시스템의 국제간 공동 시연에 사용된 한국어 번역 시스템의 성능에 대해 기술한다. 번역 시스템의 성능은 전사문장을 이용한 영어, 일본어, 한국어의 번역 결과와 음성인식 결과를 이용한 각 언어의 번역 결과를 평가하여 얻었다. 그리고 세부 시스템의 성능을 알아보기 위해 음성인식의 결과로부터 C-STAR IF(interchange format)까지의 해석 시스템과 C-STAR IF로부터 한국어, 영어, 일본어로 생성해 내는 생성 시스템의 성능으로 나누어서 평가한다.

• 한국정보시스템학회지:정보시스템연구
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• 제32권3호
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• pp.133-150
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• 2023

Purpose This study aims to develop classification models using a decision tree algorithm to identify core keywords and rules influencing online consumer review evaluations for the robot vacuum cleaner on Amazon.com. The difference from previous studies is that we analyze core keywords that affect the evaluation results by dividing the subjects that evaluate online consumer reviews into self-evaluation (star ratings) and peer evaluation (helpfulness votes). We investigate whether the core keywords influencing star ratings and helpfulness votes vary across different products and whether there is a similarity in the core keywords related to star ratings or helpfulness votes across all products. Design/methodology/approach We used random under-sampling to balance the dataset. We progressively removed independent variables based on decreasing importance through backwards elimination to evaluate the classification model's performance. As a result, we identified classification models that best predict star ratings and helpfulness votes for each product's online consumer reviews. Findings We have identified that the core keywords influencing self-evaluation and peer evaluation vary across different products, and even for the same model or features, the core keywords are not consistent. Therefore, companies' producers and marketing managers need to analyze the core keywords of each product to highlight the advantages and prepare customized strategies that compensate for the shortcomings.

• 정보처리학회논문지A
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• 제15A권2호
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• pp.95-100
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• 2008

본 논문에서는 Folded 하이퍼-스타 연결망을 기반으로 하는 새로운 상호연결망, 계층적 Folded 하이퍼-스타 연결망 HFH($C_n,\;C_n$)을 제안한다. 그리고 본 논문에서 제안한 HFH($C_n,\;C_n$)가 Folded 하이퍼-스타 연결망과 기존에 제안된 계층적 연결망인 HCN(m,m), HFN(m,m)보다 망비용(지름${\times}$분지수) 측면에서 우수한 연결망임을 보인다. 또한 HFH($C_n,\;C_n$)의 여러 가지 망 성질(연결도, 라우팅 알고리즘, 지름, 방송)을 분석한다.

• Macromolecular Research
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• 제16권8호
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• pp.686-694
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• 2008

We studied the molecular shapes and structural characteristics of a 33-armed, star polystyrene (PS-33A) and two $3^{rd}$-generation, dendrimer-like, star-branched poly(methyl methacrylate)s with different architectures (pMMA-G3a and PMMA-3Gb) and 32 end-branches under good solvent and theta ($\Theta$) solvent conditions by using synchrotron small angle X-ray scattering (SAXS). The SAXS analyses were used to determine the structural details of the star PS and dendrimer-like, star-branched PMMA polymers. PS-33A had a fuzzy-spherical shape, whereas PMMA-G3a and PMMA-G3b had fuzzy-ellipsoidal shapes of similar size, despite their different chemical architectures. The star PS polymer's arms were more extended than those of linear polystyrene. Furthermore, the branches of the dendrimer-like, star-branched polymers were more extended than those of the star PS polymer, despite having almost the same number of branches as PS-33A. The differences between the internal chain structures of these materials was attributed to their different chemical architectures.

• 생물환경조절학회지
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• 제17권4호
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• pp.293-296
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• 2008

제주에서 무가온 하우스 재배에 적합한 아티초크 품종을 선발코자 'Purple Romagna', 'Imperial Star', 'Green Globe', 'Emerald', 'Italian', 'Carciofo Di Romagna' 품종을 시험재료로 이용하였다. 2004년 10월 5일에 본엽 4매 정도 자란 묘를 무가온 하우스내에 정식하였다. 첫 수확은 이듬해 봄 4월 하순경부터 시작되었는데 첫 수확일은 'Emerald'와 'Imperial Star'가 4월 26일과 27일로 빨랐으며, 대체로 수확은 5월 상순경부터 시작되어 6월 하순까지 가능하였다. 주당 수확 화뢰수는 'Green Globe'가 5.4개 이상으로 가장 많았으며 'Italian께서 1.3개 정도로 가장 적었다. 평균 화뢰무게는 'Imperial Star', 'Green Globe', 'Purple Romagna'에서 $228{\sim}288g$ 정도로 비슷하였다. 10a당 수량은 'Green Globe께서 2,172kg으로 가장 많았으며, 다음이 'Imperial Star'에서 1,947kg이었다. 따라서 난지지역인 제주도에서 아티초크의 무가온 하우스재배에는 수량면에서 'Green Globe'및 'Imperial Star'가 적합할 것으로 판단되며, 10월에 정식하여 재배할 경우 이듬해 4월 하순부터 6월까지 수확할 수 있다.

• 한국식생활문화학회지
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• 제21권6호
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• pp.629-637
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• 2006

This exploratory study is to analyze the status of star menus and suggest the development strategy of star menus in the western restaurants of the tourism hotels in Seoul. The data was collected from the chefs who have been working over 15-years in tourism hotels in Seoul by judgement sampling. The questionnaire was composed of Miller and Pavesic's 'Fifty tips for a successful menu' and Khan's 'The evaluation of menu item development', The 30-menu items were selected from the 1st survey on the menu items that were high in both popularity and contribution margin by menu engineering method. The selected menu items were analyzed by 14 lists: simplicity, ready availability of ingredients, quality, flavor, presentation, preparation, service method, nutrition quality, preference, profitability, serving temperature, descriptive copy of menu and publicity. As a result of the study, appetizer category was recorded the highest score by 4.09. Smoked salmon, Tomato and mozzarella cheese, Cream of mushroom, Cream of asparagus, French onion soup, Grilled beef tenderloin, Grilled rib-eye steak, Roasted lamb rack, King prawn, Seafood spaghetti, Chef's salad, Caesar salad, Organic salad, Fruit plate, Italian tiramisu and Yogurt ice cream were recorded high score. The development strategy of star menu is belows : the menu writer must consider the productivity, effectiveness, popularity and profitability, the regular customers want varieties and creativity in the menu and the operators have to include the star menu items in the set menu.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.894-896
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• 2003

Koh Chang Island is located near the east border of Thailand. The government of Thailand promotes the island as a model of eco-tourism spots. The Island undeveloped until recent years, is expected to change to major tourist attraction. 'Digital Koh Chang project' has thus. The main objective of this project is to monitor the environment and land use status of the island and to support its sound development. In March 2003, a field survey of this project was planned and field data were collected using both airborne and ground platforms and an ocean vessel. These data were combined with satellite data in the laboratory. This presentation is all balloon-born system field operation. A 5-meter length balloon filled with Helium gas was used, whose payload consisted of two RGB standard color digital still cameras, two directional rotating servo motors, a camera mount cradle as well as signal transmitting and receiving components. A series of aerial high-resolution digital images were rather easily obtained using this inexpensive system, making it possible to monitor intended landscape features in a specific field. Design of simple, low-cost and easily transportable flying platforms and local field surveys using them are useful for getting local ground truth data to calibrate satellite or airborne-based RS data. The design analysis to upgrade the system is further investigated.

• Macromolecular Research
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• 제14권3호
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• pp.287-299
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• 2006

To successively synthesize star-branched polymers, we developed a new iterative methodology which involves only two sets of the reactions in each iterative process: (a) an addition reaction of DPE or DPE-functionalized polymer to a living anionic polymer, and (b) an in-situ reaction of 1-(4-(4-bromobutyl)phenyl)-1-phenylethylene with the generated 1,1-diphenylalkyl anion to introduce one DPE functionality. With this methodology, 3-, 4-, and 5-arm, regular star-branched polystyrenes, as well as 3-arm ABC, 4-arm ABCD, and a new 5-arm ABCDE, asymmetric star-branched polymers, were successively synthesized. The A, B, C, D, and E arm segments were poly(4-trimethylsilylstyrene), poly(4-methoxystyrene), poly(4-methylstyrene), polystyrene, and poly(4-tert-butyldimethylsilyloxystyrene), respectively. All of the resulting star-branched polymers were well-defined in architecture and precisely controlled in chain length, as confirmed by SEC, $^1H$ NMR, VPO, and SLS analyses. Furthermore, we extended the iterative methodology by the use of a new functionalized DPE derivative, 1-(3-chloromethylphenyl)-1-((3-(1-phonyletheny1)phenyl) ethylene, capable of introducing two DPE functionalities via one DPE anion reaction site in the reaction (b). The number of arm segments of the star-branched polymer synthesized by the methodology could be dramatically increased to 2, 6, and up to 14 by repeating the iterative process.

• 천문학논총
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• 제34권1호
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• pp.1-16
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• 2019

"Hon-Chon-Jeon-Do" is a woodcut star map with the size of $79.4cm{\times}127.5cm$, and was widely disseminated as it was made into a set with Kim, Jung Ho's "Yeoji-Jeon-Do". This study confirmed that Yixiang kaocheng xubian ("의상고성속편") star catalogue was used as a source to produce the star map, and the stereographic projection was applied with the projection center being the mid-point (Q) between the celestial and ecliptic north poles. The 'mid-circle' around the Q is arisen between the equator and the ecliptic, and on this circle, the hour angle and the ecliptic longitude of a star can be marked using the same scale. This means that the hour of the day and the season of the year can be read on the same dial of the mid-circle, and the application of this character in the practical use was the key point of the star map production. By observing either transits or positions of the 28 xiu (宿), it is easy to find the corresponding season and time by simply reading the dial on the mid-circle. This is just the function of a portable almanac and thus by disseminating it widely, the convenience of the people would have been promoted. For this reason, it can be stated that "Hon-Chon-Jeon-Do" was a practical astronomical tool which was produced by the western astronomical projection method and was used to find time and season. Choi, Han Ki and Kim, Jung Ho are strong candidates for the makers of this star map. The time of production is estimated to be 1848 ~ 1857, and "Hon-Chon-Jeon-Do" could be regarded as a good contributor to popularization of astronomy in the late Joseon Dynasty.