• Title/Summary/Keyword: triangle

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Properties of Triangle-Shaped Fuzzy Membership Function (삼각 퍼지 멤버쉽함수의 특성)

  • 이규택;이장규
    • Journal of the Korean Institute of Intelligent Systems
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    • v.5 no.1
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    • pp.15-20
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    • 1995
  • Fuzzy membership functions are some kinds of mapping function for the fuzzification and the defuzzification. Triangle-shaped fuzzy membership functions are widely used in fuzzy controller, for it is easy to implement. In these membership functions, it is known that narrower fuzzy sets permit finer control near the operating point than that far from the operating point. $Supp{\acute{o}}se$ we have a membership function with narrower triangle near zero and wider triangle far from zero. The membership function will make fine control when small input is given and rough control at large input. Therefore the performance of the controller with that membership function will be enhanced. This paper presents how the width of triangle base in the fuzzy membership function has influence on the output using geometrical approaches.

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Correction of a nasal soft triangle deficiency as a complication of augmentation rhinoplasty

  • Kim, Eon Su;Heo, Jae Won;Yang, Chae Eun;Kim, Jiye;Kim, Sug Won
    • Archives of Craniofacial Surgery
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    • v.22 no.3
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    • pp.161-163
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    • 2021
  • The soft tissue triangle is an easily recognizable subunit of the nose. Therefore, deformities in this region resulting from trauma or complications after cosmetic surgery can have serious cosmetic impacts. Various reconstruction choices exist for deformities such as depression of the soft triangle but choosing the most appropriate treatment in each case remains a challenge. In the case described herein, a patient underwent augmentation rhinoplasty with a silastic implant and experienced implant exposure in the soft triangle area. After implant removal, the patient complained of depression in this area. The authors effectively solved this problem through a de-epithelialized composite tissue graft. In this report, we present this case and review similar cases of reconstruction of the soft triangle.

Remediated Food in Media Revised model of Lévi-Strauss' Culinary Triangle

  • Jong Sir, Oh
    • International Journal of Advanced Culture Technology
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    • v.11 no.1
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    • pp.181-191
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    • 2023
  • This study suggests a revised model of Lévi-Strauss' culinary triangle, which is frequently cited in food-related articles. To scrutinize how the media shares content about food and to remediate food discourse, this study conducted a focus group interview and targeted food program viewers and classified discoursal elements or nodes by Nvivo qualitative tools. In the process of classification, it found what seems to be hard to explain in the current food culture with Lévi-Strauss' culinary triangle, even if it still depicts appropriately, in the post-modern era implied complexity. Then, it arranged obtained discoursal nodes and analyzed the relationship between them. Interestingly, food in media plays as an important role beyond food itself, such as it can trigger memories, create social divides, play a role in economic invigoration, etc. Consequently, this paper suggests the revised culinary triangle model expanded from Lévi-Strauss' in which traces the molding process of food remediation with discoursal nodes in stages.

Minimizing the risk of perioperative cardiovascular complications in homozygous familial hypercholesterolemia: a case report

  • Khan, Saad;Min, Samuel;Willard, Garrett;Lo, Iris;D'Souza, Rachael;Park, Aaron
    • Journal of Dental Anesthesia and Pain Medicine
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    • v.20 no.1
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    • pp.39-44
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    • 2020
  • Homozygous familial hypercholesterolemia (HoFH) is a rare inherited disorder that presents as abnormally elevated levels of low-density lipoprotein cholesterol and premature heart disease, requiring frequent intervention through lipid apheresis for management. The risk of perioperative cardiac events is higher in patients with HoFH because of its pathophysiological manifestations in the vascular system. Careful cardiac precautions and anesthetic assessments are necessary to ensure patient safety. In the following case report, we discuss the clinical course and anesthetic considerations for a 14-year-old girl with HoFH undergoing sedation for dental extractions and mandibular molar uprighting in an outpatient oral surgery clinic. Considerations included the use of heparin in the patient's weekly plasma lipid apheresis treatment. In order to reduce the risks of peri- and postoperative bleeding and perioperative cardiac events, the operation was scheduled for 4 days after apheresis. This allowed for adequate heparin clearance, while also reducing the likelihood of possible cardiac events. A literature review revealed no results for the outpatient management of patients with HoFH undergoing sedation for noncardiac procedures. Our reported case serves as a clinical example for physicians to be utilized in the future.

CENTROIDS AND SOME CHARACTERIZATIONS OF PARALLELOGRAMS

  • Kim, Dong-Soo;Lee, Kwang Seuk;Lee, Kyung Bum;Lee, Yoon Il;Son, Seongjin;Yang, Jeong Ki;Yoon, Dae Won
    • Communications of the Korean Mathematical Society
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    • v.31 no.3
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    • pp.637-645
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    • 2016
  • For a polygon P, we consider the centroid $G_0$ of the vertices of P, the centroid $G_1$ of the edges of P and the centroid $G_2$ of the interior of P, respectively. When P is a triangle, the centroid $G_0$ always coincides with the centroid $G_2$. For the centroid $G_1$ of a triangle, it was proved that the centroid $G_1$ of a triangle coincides with the centroid $G_2$ of the triangle if and only if the triangle is equilateral. In this paper, we study the relationships between the centroids $G_0$, $G_1$ and $G_2$ of a quadrangle P. As a result, we show that parallelograms are the only quadrangles which satisfy either $G_0=G_1$ or $G_0=G_2$. Furthermore, we establish a characterization theorem for convex quadrangles satisfying $G_1=G_2$, and give some examples (convex or concave) which are not parallelograms but satisfy $G_1=G_2$.

A Study on the Introduction and Explanation of the sum of the Angles of a Triangle in Elementary School Mathematics (초등학교 수학에서 삼각형의 내각의 합의 도입과 설명 방법)

  • Hong, Gap ju;Oh, Seong hun
    • Education of Primary School Mathematics
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    • v.21 no.1
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    • pp.75-91
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    • 2018
  • This study examines the educational meaning of the sum of the angles of a triangle in elementary school mathematics and discusses the introduction and explanation methods to convey the meaning faithfully. First, we investigated how to introduce the sum of the angles of a triangle in the Korean national mathematics curriculums from the past to the present and surveyed the experiences and opinions of the teachers. The results of the survey are summarized and discussed in three parts: The context of 'arranging angles activities' and 'measuring angles activities', the methods to convey the meaning of the sum of the angles of a triangle as an invariance, and other details.

A Study on Smart Warning Triangle (스마트 안전 삼각대에 관한 연구)

  • Kim, Tae-Kook
    • Journal of Internet of Things and Convergence
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    • v.4 no.1
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    • pp.37-41
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    • 2018
  • This paper examines smart warning triangles to prevent secondary accidents on roads. After a traffic accident on the road, a safety tripod must be installed to notify the accident. However, it can cause secondary accidents during warning triangle installation. To solve this problem, a smart warning triangle was proposed and implemented. A smart warning triangle acts as a triangle through a logo light projector when it detects an impact. Arduino functions as an impact detector and a logo light projector. The proposed smart safety tripod is expected to help prevent secondary accidents by acting as a safety tripod if the brightness of illumination is complemented.

Teachers' Understanding about Triangle Congruence Conditions (삼각형의 합동조건에 대한 교사들의 이해와 개선 방안)

  • Rim, Haekyung
    • School Mathematics
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    • v.16 no.2
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    • pp.219-236
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    • 2014
  • We recognized that most teachers are having insufficient understanding or misunderstanding about congruent conditions of triangles. So the purpose of this study was to analyze teachers's understanding about congruent conditions of triangles and to find the causes of teachers's misunderstanding. Most teachers have been misunderstanding that triangle determining- conditions are only 3 ways(SSS, SAS, ASA). And they have wrong confidence that 2 sides and a non included angle(ASS) is not always able to make one triangle. This study found that these teachers's misconception was from the textbook using now. As the result of this study, we suggested 7 improvement ways about planning of curriculum, writing of textbook and teacher training course.

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미래를 선도할 10대 청정에너지 기술

  • 대한전기협회
    • JOURNAL OF ELECTRICAL WORLD
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    • s.451
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    • pp.22-31
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    • 2014
  • 온실가스 다량 배출로 인한 지구온난화 현상은 많은 분야에서의 변화를 요구하고 있다. 특히 온실가스 배출의 주원인으로 꼽히고 있는 발전 등 에너지산업 분야의 경우 그 요구는 매우 거세다. 과거에는 경제성장이라는 측면만 고려하면 됐지만, 지금은 기후변화 대응을 위해 환경을 최우선적으로 고려할 것을 주문하고 있기 때문이다. 문제는 현재 전 세계적으로 약 20%에 이르는 인구가 전기 에너지를 사용하지 못하고 있다는 점이다. 즉 향후 에너지를 사용하고자 하는 신규 소비자는 더욱 늘 것이고, 산업의 발전으로 인한 에너지 소비 역시 큰 폭으로 증가할 수밖에 없다. 문제가 굉장히 어렵지만 해결책도 분명 존재한다. 결론적으로 말해 온실가스 배출을 최소화하면서도 에너지 효율은 높인 기술을 개발하면 되는 것이다. 그리고 이미 세계 각국은 청정에너지 기술개발을 위해 다각도의 노력을 펼치고 있는 상황이다. 그렇다면 세계 각국은 미래 에너지시장을 선도할 청정에너지 기술로 어떤 것을 꼽고 있을까. 이 질문에 대한 대답은 지난 5월 서울에서 개최된 '제5차 클린에너지장관회의(CEM, Clean Energy Ministerial)'에서 제시된 바 있다. CEM은 한국, 미국, 영국, 독일, 중국, 일본 등 세계 에너지의 70%를 사용하는 주요 국가의 관계 장관들이 모여 클린에너지 공급 확대와 에너지효율 향상을 위한 구체적 액션플랜을 논의하는 자리다. 2010년 미국에서 첫 회의가 열렸고 아랍에미리트, 영국, 인도에 이어 한국은 5번째로 CEM을 개최했다. 특히 이번 CEM에서는 회원국들의 의견을 모아 10대 청정에너지 혁신기술을 최초로 선정, 발표했다. CEM은 "향후 10년 간 에너지 시장의 변화를 선도할 유망 기술을 선정한 것으로 IEA 등 국제기구와 주요국 기술 로드맵을 기준으로 해 23개 회원국 회람을 거쳐 최종 확정하게 됐다"고 배경을 설명했다. 이번에 선정된 10대 청정에너지 혁신기술은 ${\triangle}$초고압직류송전 ${\triangle}$에너지저장장치 ${\triangle}$바이오연료 ${\triangle}$마이크로 그리드 ${\triangle}$탄소포집 및 저장 ${\triangle}$초고효율 태양광 발전 ${\triangle}$해상풍력 ${\triangle}$신재생에너지 하이브리드시스템 ${\triangle}$빅데이터 에너지관리시스템 ${\triangle}$지열 시스템이다. 이와 관련해 산업통상자원부 윤상직 장관은 "이번에 선정된 10개의 기술은 최근의 기술적 정책적 추세가 잘 반영된 결과"라고 평가했다. 특히 윤 장관은 "중앙집중형 공급원에서 분산형 전원으로의 변화, 에너지 효율향상의 중요성, ICT와 융 복합 추세 등 우리나라의 상황에서 시사하는 바가 크다"며 "현재 수립하고 있는 '제3차 국가에너지기술 개발계획'에 이러한 기술적 추세를 반영하겠다"는 의사를 표명했다. 향후 10년 간 에너지시장의 변화를 선도할 10대 청정에너지 유망기술을 자세히 소개한다.

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The Narrative Structure and Musical Number's Dramatic Function in Musical "Ah! My Goddess" (뮤지컬 <여신님이 보고 계셔>의 서사 구조와 뮤지컬 넘버의 극적 기능)

  • Shin, Sa-Bin;Lee, Woo-Chang
    • The Journal of the Korea Contents Association
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    • v.14 no.3
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    • pp.113-124
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    • 2014
  • Ah! My Goddess has impressive narrative structure including a "narrative as a discourse," a "narrative as a story" and a "narrative by narrator": in a narrative as a discourse, North and South Korean soldiers make friendship; in a narrative by a narrator, main characters (including Sun-ho, Seok-gu, Ju-hwa, Chang-seop and Dong-hyeon) appear in the outer story and narrate the inner story of characters (including Dong-hyeon, Goddess and Seok-gu) within the frame of a play within a play; and in a narrative as a story, reality and fantasy intersect by the appearance of the "Goddess." This narrative structure contributes largely to 1) the character formation of space, 2) the strategic minimization of the stage, 3) the multiplicity of main characters, 4) the repetition of similar life story, and 5) the flexible change of a point of view. And the musical number serves as dramatic functions such as 1) pursuing the multiplicity of characters, 2) maximizing the effect of the expression of tragic feelings, 3) drawing audience's interest by irony and fantasy, 4) evoking the nostalgia for delicate feelings and pure wishes, and 5) ordinary female characters' playing the role of healing and salvation, thereby contributing to the reconstruction of reality and the style of fantasy.