• Plant Resources
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• 제6권2호
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• pp.98-101
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• 2003

Colored apiculus, awn, and long empty glume are indicators of wildness and are usually eliminated during rice domestication. Genetic analysis was conducted to clarify the inheritance patterns of awn, apiculus color, and long empty glume in Korean rice collection. Based on individual characterization of F$_2$ progenies derived from crosses between parents with colorless and purple apiculus, two (3 colored: 1 colorless) or three dominant genes (9 purple: 3 red: 4 colorless) are estimated as controlling this character by simultaneous complementary action. Different inheritance systems were detected between S237 and S245 of 'Shareibyeo' which belong to the weedy type. To determine the genes responsible in awning and long empty glume characters, the inheritance of landrace varieties of rice ('Naengdo' and 'Yuna') was investigated. In the crosses of awned land race and awnless cultivar, three dominant genes are supposed to control the awning genetic system by 63 awned: 1 awnless individual. As for long empty glume, one recessive gene, g-l on the chromosome 4, was the one controlling the segregation ratio of 3 normal empty: 1 long empty glume. By analyzing the Korean rice collection, the inheritance systems of these wild characters may lead to a better understanding of rice domestication in the future.

• 전자공학회논문지B
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• 제29B권10호
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• pp.69-77
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• 1992

Pattern Recognition is one of the fundamental areas of computer vision. The recognition of patterns with varying size and severe defects is especially important. However, it is known that the conventional algorithms such as GHT or structural approaches have limitations in speed and accuracy. In this paper, in order to avoid above-mentioned problems, we propose a new recognition algorithm which exploits the histogram of contour directions and the sampled spot matching method. While the former provides little influence against size variation, the latter has strong immunity to noise and defects. We applied those proposed algorithms for the recognition of numbers extracted from the car number plates and shapes of aircraft. Experimental result shows that it is possible to solve above-mentioned problems by complementary uses of those two suggested algorithms. The contour directional histogram method resulted in high-speed of average 0.013 sec/char and 0.1 sec/aircraft-image on IBM-386. The accuracy of recognition is as high as 99%. Sampled spot matching method has less speed than the former one, however, it showed fairly strong immunity to noise and defects.

• Clinical Endoscopy
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• 제51권6호
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• pp.527-533
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• 2018

There have been many advances in endoscopic imaging technologies. Magnifying endoscopy with narrow-band imaging is an innovative optical technology that enables the precise discrimination of structural changes on the mucosal surface. Several studies have demonstrated its usefulness and superiority for tumor detection and differential diagnosis in the stomach as compared with conventional endoscopy. Furthermore, magnifying endoscopy with narrow-band imaging has the potential to predict the invasion depth and tumor margins during gastric endoscopic submucosal dissection. Classifications of the findings of magnifying endoscopy with narrow-band imaging based on microvascular and pit patterns have been proposed and have shown excellent correlations with invasion depth confirmed by microscopy. In terms of tumor margin prediction, magnifying endoscopy with narrow-band imaging offers superior delineation of gastric tumor margins compared with traditional chromoendoscopy with indigo carmine. The limitations of narrow-band imaging, such as the need for considerable training, long procedure time, and lack of studies about its usefulness in undifferentiated cancer, should be resolved to confirm its value as a complementary method to endoscopic submucosal dissection. However, the role of magnifying endoscopy with narrow-band imaging is expected to increase steadily with the increasing use of endoscopic submucosal dissection for the treatment of gastric tumors.

• Clinical and Experimental Pediatrics
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• 제48권9호
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• pp.929-934
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• 2005

목 적 : 본 연구는 소아, 청소년에게 행해지는 보완대체요법 사용실태에 대한 구체적이고, 다각적인 연구의 필요성이 있었기에 보완대체요법을 접할 기회가 많은 만성질환을 가진 소아, 청소년에서 보완대체요법이 어느 정도 사용되고 있는지, 보완대체요법의 종류에 따른 사용실태를 알아보고, 보완대체요법 사용에 영향을 미치는 인자가 있는지 알아보고자 하였다. 방 법 : 2004년 3월부터 8월까지 관동의대 부속병원 소아과에서 지속적 추적관찰을 해오던 입원 경험이 있는 환아들 중에 만성질환(기관지 천식, 아토피, 간질, 뇌성마비 등)을 앓고 있는 환아(160명)를 대상으로 하였고, 환아와 동행한 보호자에게 설문양식에 따라 면담설문을 실시하였다. 결 과 : 설문 조사에 응답한 만성질환을 앓고 있는 환아는 252명이었고, 그 중 보완대체요법을 시행한 160명(63.5%)을 대상으로 삼았다. 각 질환별 보완대체요법 이용률은 선천성 근병증(100%), 아토피성 피부염(91.1%), 만성 반복성 복통(73.5%), 기관지 천식(72.5%), 만성 설사(50.0%), 뇌성 마비(42.1%), 만성 기관지염(37.5%), 간질(17.1%) 순으로 이용률의 차이를 보였다. 시행한 종류는 식이요법(31.1%), 생약요법(23.4%), 수치요법(16.3%), 마사지(14.2%), 방향요법(8.9%), 침술요법(4.6%), 동종요법(1.3%) 순이었다. 64명(40.0%)이 2가지 이상의 보완대체요법을 동시에 시행하였고, 보완대체요법을 권유받은 경로는 비의사처방에 의한 경우가 133명(83.1%)이었으며, 99명(61.9%)이 보완대체요법의 효과에 대해 긍정적으로 답변했다. 보완대체요법 시행군에 있어서 보완대체요법 사용에 영향을 미치는 인자들 중 부모 연령, 자녀 연령이 통계학적 의의가 있었으며, 부모의 연령이 높을수록 시행경험이 많았고(P=0.001), 자녀의 나이가 어릴수록 보완대체요법을 시행하지 않는 경향을(P=0.002) 보였다. 결 론 : 만성질환을 앓는 환아들은 치료에 있어서 현대의학에 의존하는 반면, 상당수가 보완대체요법을 이용하고 있었으며, 2가지 이상을 동시에 사용하는 경우가 많았고, 그 효과에 대해 긍정적으로 평가하고 있었다. 이와 같은 결과는 국내에서 보완대체요법의 접근성이 용이하고, 긍정적인 측면이 강조되고 있기 때문이므로 무분별한 보완대체요법의 사용을 피하기 위해서는 보완대체요법의 효과와 부작용에 대한 현대의학적인 연구가 더 필요할 것으로 사료된다.

• 과학기술학연구
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• 제4권2호
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• pp.67-101
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• 2004

인용에 대한 연구는 지식의 생산과 재생산 및 평가와 관련되어 있다는 점에서 중요한 의미가 있는 전통적인 과학사회학 테마임에도 불구하고, 경성과학과 연성과학의 인용패턴 차이에 대해서는 이론적 차원에서 논쟁되어 왔을 뿐 경험적 연구는 미답(未踏) 영역으로 남아있다. 경성과학과 연성과학의 중요한 인용패턴 차이로 제도주의와 구성주의는 각각 '내용에 따른(what one says)' 인용과 '저자의 속성에 따른(who one is)' 인용이라는 상반되는 이론적 해석을 내놓은 바 있는데, 이 논문은 이 '이론적 논쟁을 경성과학으로서의 물리학과 연성과학으로서의 사회학을 연구대상으로 삼아 '경험적' 수준에서 규명하려는 과학사회학적 연구이다. 분석 결과 물리학도 사회학과 마찬가지로 전임 여부에 따른 인용패턴이 나타났지만 박사학위 취득지역에 따른 인용패턴은 사회학에서만 나타남이 발견되었다. 전임 여부에 따른 인용패턴의 수준에서는 구성주의의 설명이, 박사학위 취득지역에 따른 인용패턴의 수준에서는 제도주의의 설명이 보다 현실 정합하게 나타나는 것이다. 이는 경성과학과 연성과학의 인용패턴이 전임 여부와 박사학위 취득지역의 차원에서 각각 상이하게 나타나는 복합성을 가짐을 의미하며, 이를 설명하는 이론틀 역시 제도주의와 구성주의의 배타적 적용이 아닌 상호보완적 적용의 필요성을 시사하고 있다. 결국 물리학도 사회학과 마찬가지로 '사회 속의 과학'으로서 사회적 맥락으로부터 자유롭지 못한 지식생산을 하고 있으며, 동시에 지식사회학적 맥락의 지역을 초월한 보편적 특성도 가지고 있음을 이 연구는 인용패턴의 비교분석을 통해 밝혀내고 있다. 미로의 비너스 조각은 대리석과 비너스 형태의 결합이다. 때문에 관객은 그 주변을 돌면서 우리 신체의 내적 공간과 시각에 의존하면서 그 작품의 중량감, 양감, 형태 등의 특질과 만나게 된다. 그러나 현대 추상조각과 개념조각은 이보다 좀 더 확장된 공간을 제시한다. 이것은 현대조각이 건축개념을 수용한 때문이며, 그것이 때로는 안 쪽에서 때로는 바깥 쪽에서 그 형태를 결정하며, 보고 듣고 느끼고 만져지고 왕래하는 등의 인식 영역인 관객의 오감체계에 직접적으로 관계하기 때문이다. 우리는 건축 공간에서, 시각 외에도 청각이나 촉각을 통해 지각한다. 대강 요약하자면 공간은 객관적 상태이기보다는 인식영역의 주관성을 통해 받아들여진 우리가 지나쳐온 것들이나 체험된 공간이다. 여기서 '받아들여지는' 일은 과거 경험들의 주체들, 언어와 문화에 의해서 이루어져야 한다. 건물, 즉 둘러싸고 있는 공간은 중앙이 아니다. 중앙은 바로 나, 둘러싸여진 나이다 나는 나의 동작에 따라 그 공간의 시스템을 변화시킬 수 있는 유동적인 중심이다 (이때의 나는 위치의 축을 변화시키는 것이 아니라, 그들을 탐색하는 것이다). 작품이 대형화되면서 이러한 건축공간개념이 현대 조각가들의 작품개념에 이용되었다고 본다. 현대미술에서 In situ작업과 특정한 장소를 위한 기획되어진 최근의 프로젝트 작업들은 대형화되어있으며, 건축에서처럼 특정한 장소를 만들어낸다. 로잘린드 크라우스(Rosalind Krauss)는 또한 '조각영역의 확장 (La sculpture dans le champ elargi)'에서 현대조각이 건축과 환경의 영역을 침범하고 있음을 지적한다.

• 농업과학연구
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• 제22권1호
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• pp.110-126
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• 1995

Korean economy has been developed successfully in the course of implementing the five year economic development plans since 1962. The gap of incomes and quality of life between rural and urban area has been widened and it made rural farm laborers drain to urban areas. Therefore the prevailing situation of labor shortage and wage hike in rural area has made farm management deteriorate in recent years. Under the internal and international unfavorable economic conditions, marginal farm land of 66.5 thousand ha has been idled as of end of 1993. The total area outside agricultural development zone with bad farming conditions including irrigation and drainage, and land consolidation for mechanization were estimated at 360.4thousand ha equivalent to 17.5% of the total farm land area in Korea. Considering the topographical conditions of marginal lands, the effective use of marginal lands should be studied from the view point of public interest rather than from the view point of individual economic conditions. Considering the present agricultural economic settings, such as price decrease, unfavourable benefits of farm products, labour shrotage, free trade of farm products and poor physical condition of marginal lands, the institutional and realistical measures for the effective utilization of idle and marginal land should be studied as soon as possible. Detail land use pattern should be surveyed in the areas outside agricultural development zone and have to be classified as orchard farms, grass land, fish culture farms, lawn and ornamental tree farm, sight seeing and leisure farms for urban peoples, special crops production farms and common farms to be developed for farm mechanization. According to the surveyed results, the expected utilization patterns of the idle and marginal lands could be considerd as village common use, farm land base development, leisure farm development, mutual complementary utilization between urban and rural areas, G't purchase and management, credit supply and new extension services, improvement of cropping patterns and sight seeing and leisure farm patterns. For the successful and reasonable management of the marginal lands, the actions such as institutional improvement, prohibition of idle marginal land, enforcement of activities of farm management committee members and land banking system of RDC including development and utilization systems should be included.

• Asia pacific journal of information systems
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• 제18권4호
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• pp.57-81
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• 2008

Knowledge is an essential strategic weapon for sustaining competitive advantage and is the key determinant for organizational growth. When knowledge is shared and disseminated throughout the organization, it increases an organization's value by providing the ability to respond to new and unusual situations. The growing importance of knowledge as a critical resource has forced executives to pay attention to their organizational knowledge. Organizations are increasingly undertaking knowledge management initiatives and making significant investments. Knowledge sourcing is considered as the first important step in effective knowledge management. Most firms continue to make an effort to realize the benefits of knowledge management by using various knowledge sources effectively. Appropriate knowledge sourcing strategies enable organizations to create, acquire, and access knowledge in a timely manner by reducing search and transfer costs, which result in better firm performance. In response, the knowledge management literature has devoted substantial attention to the analysis of knowledge sourcing strategies. Many studies have categorized knowledge sourcing strategies into intemal- and external-oriented. Internal-oriented sourcing strategy attempts to increase firm performance by integrating knowledge within the boundary of the firm. On the contrary, external-oriented strategy attempts to bring knowledge in from outside sources via either acquisition or imitation, and then to transfer that knowledge across to the organization. However, the extant literature on knowledge sourcing strategies focuses primarily on large organizations. Although many studies have clearly highlighted major differences between large and small firms and the need to adopt different strategies for different firm sizes, scant attention has been given to analyzing how knowledge sourcing strategies affect firm performance in small firms and what are the differences between small and large firms in the patterns of knowledge sourcing strategies adoption. This study attempts to advance the current literature by examining the impact of knowledge sourcing strategies on small firm performance from a holistic perspective. By drawing on knowledge based theory from organization science and complementarity theory from the economics literature, this paper is motivated by the following questions: (1) what are the adoption patterns of different knowledge sourcing strategies in small firms (i,e., what sourcing strategies should be adopted and which sourcing strategies work well together in small firms)?; and (2) what are the performance implications of these adoption patterns? In order to answer the questions, this study developed three hypotheses. First hypothesis based on knowledge based theory is that internal-oriented knowledge sourcing is positively associated with small firm performance. Second hypothesis developed on the basis of knowledge based theory is that external-oriented knowledge sourcing is positively associated with small firm performance. The third one based on complementarity theory is that pursuing both internal- and external-oriented knowledge sourcing simultaneously is negatively or less positively associated with small firm performance. As a sampling frame, 700 firms were identified from the Annual Corporation Report in Korea. Survey questionnaires were mailed to owners or executives who were most erudite about the firm s knowledge sourcing strategies and performance. A total of 188 companies replied, yielding a response rate of 26.8%. Due to incomplete data, 12 responses were eliminated, leaving 176 responses for the final analysis. Since all independent variables were measured using continuous variables, supermodularity function was used to test the hypotheses based on the cross partial derivative of payoff function. The results indicated no significant impact of internal-oriented sourcing strategies while positive impact of external-oriented sourcing strategy on small firm performance. This intriguing result could be explained on the basis of various resource and capital constraints of small firms. Small firms typically have restricted financial and human resources. They do not have enough assets to always develop knowledge internally. Another possible explanation is competency traps or core rigidities. Building up a knowledge base based on internal knowledge creates core competences, but at the same time, excessive internal focused knowledge exploration leads to behaviors blind to other knowledge. Interestingly, this study found that Internal- and external-oriented knowledge sourcing strategies had a substitutive relationship, which was inconsistent with previous studies that suggested complementary relationship between them. This result might be explained using organizational identification theory. Internal organizational members may perceive external knowledge as a threat, and tend to ignore knowledge from external sources because they prefer to maintain their own knowledge, legitimacy, and homogeneous attitudes. Therefore, integrating knowledge from internal and external sources might not be effective, resulting in failure of improvements of firm performance. Another possible explanation is small firms resource and capital constraints and lack of management expertise and absorptive capacity. Although the integration of different knowledge sources is critical, high levels of knowledge sourcing in many areas are quite expensive and so are often unrealistic for small enterprises. This study provides several implications for research as well as practice. First this study extends the existing knowledge by examining the substitutability (and complementarity) of knowledge sourcing strategies. Most prior studies have tended to investigate the independent effects of these strategies on performance without considering their combined impacts. Furthermore, this study tests complementarity based on the productivity approach that has been considered as a definitive test method for complementarity. Second, this study sheds new light on knowledge management research by identifying the relationship between knowledge sourcing strategies and small firm performance. Most current literature has insisted complementary relationship between knowledge sourcing strategies on the basis of data from large firms. Contrary to the conventional wisdom, this study identifies substitutive relationship between knowledge sourcing strategies using data from small firms. Third, implications for practice highlight that managers of small firms should focus on knowledge sourcing from external-oriented strategies. Moreover, adoption of both sourcing strategies simultaneousiy impedes small firm performance.

• 대한전자공학회논문지SP
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• 제44권4호통권316호
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• pp.26-34
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• 2007

지능형 프로젝션 시스템이란 임의의 환경에서 프로젝터를 이용하여 임의의 스크린에 영상을 왜곡없이 보여줄 수 있는 시스템을 말한다. 최근 프로젝터의 보편화로 인해 지능형 프로젝션 시스템에 대한 요구는 크게 증가했으며, 이러한 요구들은 지능형 프로젝션 시스템과 관련된 기술의 획기적인 발전을 가져왔다. 그러나, 여전히 지능형 프로젝션 시스템이 극복하지 못한 환경들(대부분 주어진 환경이나 시스템의 특성이 시간에 따라 변하는 것과 관련됨)이 존재하며, 이는 지능형 프로젝션 시스템들의 적용 범위를 크게 제약해왔다. 본 논문에서는 이러한 환경들 중에 대표적인 두 가지 예로 스크린에 전반사가 존재하는 경우와 스크린의 기하가 동적으로 변하는 경우에 대한 효과적인 해결책(다수의 중첩 프로젝터 시스템, 보색패턴 삽입) 및 실험결과를 제공한다. 또한, 사용자분석을 통해 사용자 관점에서 제안된 방법들의 효용성을 검증한다. 단 각 환경들은 독립적으로 다루어지며 모든 환경에 대해 동시에 적응하는 것에 대해서는 다루지 않는다. 이는 모든 환경들을 동시에 고려하기 위해서는 각 기술들을 단순히 조합하는 것으로는 불가능하며, 새로운 모델 및 기술이 개발되어야 하기 때문이다. 따라서, 지극히 일반적인 환경이 아니라면 본 논문에서 제안한 방법들을 이용함으로써 지능형 프로젝션 시스템의 응용 범위를 크게 확대할 수 있을 것으로 기대된다.

• 한국작물학회지
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• 제40권5호
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• pp.608-618
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• 1995

본 연구는 잡종강세를 나타내는 두 조합의 벼 일대 잡종 품종, Shanyou 63, Teyou 53과 inbred계인 밀양 23호 등을 공시하여 벼의 잡종강세 발현기작을 규명코자 실시되었으며, 수행 후 얻어낸 결과를 요약하면 다음과 같다. 1. 종자 단백질 분석을 통해, 잡종강세 발현의 유전적인 특성들이 부분적으로 모본으로 부터 유전된다는 사실을 규명하였다. 2. Hybrid계 벼는 inbred계보다 배아의 크기가 크고 $\alpha$-amylase 활성 및 chlorophyll함량이 높게 나타났다. 이러한 특성들은 분얼능력, 특히 수량에 밀접한 영향을 끼치는 하부절간의 분얼수와도 관계가 있었으며, Shanyou 63의 경우 다른 inbred계에 비해 60~70%나 분얼력이 높았다. 3. 인위적으로 GA$_3$ 0.02 ppm을 처리한 후 $\alpha$-amylase활성 측정시, hybrid계에는 영향을 미치지 못하였으나 밀양 23은 무처리보다 높은 활성을 나타내었다. 이와 같은 결과는, hybrid계 벼의 종자내에는 이미 충분한 GA를 함유하고 있으며 이것이 초기활력과 관계있는 것으로 추정된다. 4. Cytochrome c oxidase의 활성은 inbred계 보다 hybrid rice에서 2.7~5.5배나 높게 나타났으며, 따라서 hybrid계 벼의 대사작용이 매우 높았다.

• 복식
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• 제55권2호
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• pp.58-69
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• 2005

The purpose of this study is to investigate types and formative characteristics of 'Seon' represented of costume in Amitabha of the late Koryo Dynasty. The results were as follows; The type of 'Seon' is classified into Standard, Decoration and Application types. According to three types, the types of the standard are subdivided into same rotor and no pattern and different color and no pattern, the types of the decoration are subdivided into same color and pattern and different color and pattern, And the types of the application are subdivided into wrinkle and beads-decorated wrinkle according to whether decorative beads exist or not. In the Standard type of Seon, same color and no pattern in the Decoration type of Seon, different color and pattern was most often used as its type while, in the applied type of Seon had its main type of beads-decorated wrinkle. Patterns used for Seon were complex in its composition type and filing in its arrangement style. Seon was used mainly for guneui(裙衣) and daeeui(大衣). The color arrangement of Seon, in most cases, used complementary colors, followed by same ones. Regarding costumes aesthetic characteristics in accordance with the type of Seon, those costumes appeared natural and plain when their Seon was same color and no pattern in type, artificial and plain when their Seon was different color and no pattern in type, natural and brilliant when same color and pattern in type and artificial and brilliant when different color and pattern. In regard to the applied type of Seon, such costumes looked sophisticated and delicate when their Seon was wrinkle in type and dynamic and decorative when beads-decorated wrinkle.