• 대한기계학회논문집
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• 제9권6호
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• pp.732-742
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• 1985

본 논문에서는 이 2차원 재부착분류(본문에서는 stepped wall jet라 명명함) 유동장을 재부착상류 부분, 재부착점 근방, 재부착 이후의 재발전 벽면분류 지역의 세 영역으로 구분하여 재부착 길이, 평균속도, 벽면정압을 측정하고 on-line에 의한 디지 틀 데이터 처리기법을 이용하여 난류강도, 레이놀즈 전단응력, 속도의 3승적(triple velocity product), integral length scale, Taylor's microscale 등을 실험적으로 구 하여 재부착 상류 부분에서는 자유분류와 비교하고, 재부착 이후에서는 2차원 벽면분 류와 비교하기로 한다.그리하여 초기 교란을 받는 분류가 벽면에 재부착하여 2차원 벽면분류로 재발전되어 가는 과정에 있어서의 평균 유동장과 급격한 변화를 갖는 난류 특성을 상세히 조사하여, 보다 일반적으로 적용될 수 있는 난류모델을 개발함에 있어 서 실험적인 자료를 제공하고자 한다. Fig. 1은 본 실험의 유동장에 대한 개약도를 보여주고 있다.

• 대한물리의학회지
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• 제11권1호
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• pp.71-82
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• 2016

PURPOSE: The purpose of this case report was to determine the effect of therapeutic exercise on posture, pain, and muscle activity in two patients with forward head posture (FHP). METHODS: A-31-year-old male (patient A) and a 19-year-old women (patient B) presented with FHP, neck pain, and headache. The therapeutic exercise program consisted of cervical mobilization, deep cervical flexors strengthening, and cervical extensors stretching, for 40 min/d, 2 d/week, for 8 weeks. Neck pain (VAS), neck disability (NDI), cervical range of motion (CROM), lateral view of cervical spine X-ray (indicating the FHP), and asymmetrical neck and shoulder muscular activity ratio were measured before, after 4 weeks, and after 8 weeks of corrective exercise. RESULTS: VAS and NDI decreased in patients A and B after exercise compared to before the program. CROM increased in patients A and B at flexion, extension, side bending, and rotation after exercise compared to before the program. FHP decreased in patients A and B at distance after exercise compared to before the program. In addition, asymmetrical neck and shoulder muscles activity ratio improved in patients A and B after exercise compared to before the program. CONCLUSION: We demonstrated in a case report that therapeutic exercise increases ROM, decreases pain and disability of neck, FHP, and asymmetry muscle activity ratio in patients with FHP. These finding have clinical implications for therapeutic exercise in patients with FHP.

• 한국전통조경학회지
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• 제32권2호
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• pp.159-166
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• 2014

본 연구는 미국의 대표적인 여류 조경가인 비트릭스 파란드의 덤바튼 오크의 정원분석을 통하여, 파란드의 작품경향 및 미국 1900년대 초의 신고전주의 양식의 특성을 파악하는 것을 목적으로 하였다. 분석 결과, 덤바튼 오크는 유럽의 고전주의 양식의 무조건적인 모방이 아닌, 아트 앤 크래프트의 기본철학을 배경으로 미국의 지역적 특성과 주변환경 및 문화에 맞게 해석하고 적용된 성공적인 사례라고 할 수 있다. 덤바튼 오크의 분석을 통해 도출한 미국 후기 신고전주의 양식의 특성은 다음과 같이 요약할 수 있다. 첫째, 여러 개의 가든룸이 연속적으로 이어진 정원공간은 다양한 지면의 높이를 갖는 테라스로 구성되어 있으며, 자연적 지형을 최대한 이용하였다. 둘째, 정형성과 비정형성의 공존, 대칭 및 의도적인 비대칭의 조화이다. 셋째, 식재선택 및 재식방법에 있어서도 유럽 고전주의 양식과 영국의 아트 앤 크래프트 양식이 공존하며, 공간구성 및 형태와 조화되도록 하였다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제40권3호
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• pp.103-110
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• 2014

Objectives: In this study, we assessed soft tissue asymmetry that occurred after open reduction of unilateral zygomaticomaxillary complex (ZMC) fractures. We proposed a simple method to assess soft tissue asymmetry after reduction surgery by evaluating the symmetry between the affected and the unaffected sides. The factors affecting soft tissue contour after surgery were also analyzed. Materials and Methods: Subjects included patients admitted to Wonkwang University Dental Hospital from 2008 to 2013. Cone-beam computed tomography (CBCT) images of asymmetric patients who underwent open reduction at least 3 months prior were compared with healthy patients. Results: The degree of asymmetry was measured in both the open reduction and control groups. Landmarks that showed a statistically significant difference between the two groups were zygion ($1.73{\pm}0.24mm$), bucclae ($1.08{\pm}0.26mm$), point of cheek ($2.05{\pm}0.33mm$) and frontozygomatic point ($1.30{\pm}0.31mm$). Conclusion: When compared with the normal group, asymmetry can occur in the affected side, which usually shows depression of overlying soft tissue and is statistically significantly different. Evaluation of soft tissue asymmetry with CBCT images after open reduction of ZMC fracture is useful.

• 한국지진공학회논문집
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• 제9권3호
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• pp.23-32
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• 2005

편심이 있는 구조물이 지진하중을 받는 경우 비틀림의 발생으로 특정부재에 응력 및 변위가 집중되고 이는 전혀 예상치 못한 구조물의 파괴를 유발할 수 있다. 본 연구에서는 각 횡저항 부재의 한계 변위를 기반으로 하여 구조물 전체의 횡변위와 비틀림각의 관계도(D-R Relationship: Displacement-Rotation Relationship)를 작성하고 변위스펙트럼을 이용하여 내진성능평가를 수행하는 방법을 제안한다. 제안된 내진성능평가의 방법은 시간이력해석의 결과를 이용해서 검증하였다. 또한 다양한 지진수준에 대해 구조물의 다른 성능수준을 기준으로 하는 다단계 내진성능평가를 수행하였다. 최종적으로 그 결과를 기준으로 D-R 관계도를 이용한 내진보강 전략을 제시하였다. 내진보강은 각 부재의 강도/강성을 증가시키는 방법과 연성도를 증가시키는 두 가지의 방법을 사용하였다. 특히 강도/강성을 증가시키는 내진보강 전략에서는 보강의 최적화를 위하여 보강전략을 최적화 문제로 구성하고 BFGS Quasi-Newton method를 이용하여 최적보강전략을 수립하는 과정을 제시하였다.

• 문화기술의 융합
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• 제6권3호
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• pp.99-103
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• 2020

전쟁 양상은 새로운 기술이 전장에 도입되거나 도입된 기술이 성숙 되어 작전 수행개념을 변화시킬 때 극적인 변화를 일으켰다. 그래서 19세기 이후 급속한 과학의 발전은 전쟁 양상과 속도도 급격히 변화시키고 있는데, 최근 더욱 빨라진 변화의 속도는 과거보다 미래 전쟁 양상을 예측하는 것을 더욱 어렵게 만들고 있다. 특히, 과거에는 첨단과학기술의 확산과 탈취가 어려워 최신과학기술에 기반한 미래 전쟁 양상을 예측하는 것이 비교적 용이하였지만 최근 국제적으로 활발한 인적교류와 인터넷 등을 이용한 최첨단 기술탈취, 비대칭 대응 기술과 방법의 발전은 기술에 기반한 전쟁 양상 예측을 더욱 복잡하게 만들고 있다. 즉, 전쟁의 본질과 원리, 과학기술의 발전을 함께 고려해야 미래 전쟁 양상을 예상할 수 있다.

• PNF and Movement
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• 제15권3호
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• pp.253-257
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• 2017

Purpose: This study was conducted to predict the risks that arise while standing on mediolateral ramps at various ramp angles by identifying the ratio of medial to lateral gastrocnemius muscle activities. Methods: The subjects were 20 healthy adult men. Seven mediolateral ramp angles ($0^{\circ}$, $2^{\circ}$, $5^{\circ}$, $10^{\circ}$, $15^{\circ}$, $20^{\circ}$, and $25^{\circ}$) were applied for the experiment. The ratio of medial to lateral gastrocnemius muscle activities in each condition was measured using electromyography, and the measured data were converted to root mean square values to calculate the activity ratios. Results: The study results showed statistically significant differences in the ratio of mediolateral gastrocnemius muscle activities according to the selected mediolateral ramp angles. The results of a post hoc test confirmed that the multifidus muscles were asymmetrically used on the two sides at mediolateral ramp angles of $5^{\circ}$ or higher. Conclusion: This study found that an asymmetric use of the multifidus muscles began at a mediolateral ramp angle of $5^{\circ}$, and the provision of propulsion using the ankle joints on mediolateral ramps at $5^{\circ}$ or steeper was maneuvered differently from that on flat ground. This suggests that individuals with balance control disorder have the risk of falling due to ankle sprains and unstable balance control. Therefore, patients and elderly people are required to exercise caution when crossing $5^{\circ}$ or steeper ramps.

• Archives of Plastic Surgery
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• 제38권3호
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• pp.279-286
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• 2011

Purpose: Chin is located in a prominent position, and is important to balance and harmony of the face. Genioplasty is widely performed with patients' high satisfaction, yet being relatively simple procedure. Recently in analysis of dentofacial trait, three rotational variables of yaw, pith, and roll are considered with three translational variables (forward/backward, up/down, right/left). And we could correct chin deformity effectively by applying the three rotational variables with three translational variables in genioplasty. Methods: Twenty-eight patients who have chin deformity underwent osseous genioplasty. Preoperative photography, facial three dimensional computed tomography, and cephalography were taken while chin deformities were accessed. The chin deformity was classified into four categories; macrogenia, microgenia, asymmetric chin deformity, and combined chin deformity groups. According to the nature of chin deformities and the patients' desire, preoperative plans were formulated, in consideration of three rotational variables and translational variables. Through intraoral approach, anterior mandible was exposed in the subperiosteal plane between the mental foramens and beneath the mental foramens. In the anterior mandible, vertical and horizontal grid lines with 5 mm intervals were marked to confirm the spatial location of osteomized bone segment after osteotomy. Chin repositioning was done in consideration of axial rotation and planar translation. Results: Most of the patients had achieved satisfactory results with few complications. By considering the three rotational variables, it was possible to make the chin repositioning effectively. One of the patients complained about insufficient chin correction. In other case, persistent sensory impairment around chin was observed. Conclusion: In conclusion, it is worthwhile to apply preoperative analysis and operative procedures in consideration of a three rotational variables with three translational variables in genioplasty.

• 대한두개안면성형외과학회지
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• 제19권1호
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• pp.13-19
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• 2018

Background: $Abb{\acute{e}}$ flap technique is one of the most challenging operations to correct horizontal deficiencies in secondary cleft lip deformity. Since its first introduction, the operative method was dynamically modified from simple variation to complete conceptual change, but conventional $Abb{\acute{e}}$ flap has many drawbacks in esthetic and functional aspect. Our purpose was reconstructing the symmetry of Cupid's bow and central vermilion tubercle with minimal sequalae. Methods: From 2008 to 2016, this technique was applied to 16 secondary cleft lip patients who had total or more than 60% of unilateral deficiency of Cupid's bow and central lip or tubercle pouting deficiency. A quadrangular-shaped flap was transferred from vermilion including skin and white line of central or contralateral lower lip. Pedicle division and insetting were made at 9 (unilateral) or 10 (bilateral) days after transfer. Secondary lip revision was done with open rhinoplasty after wound maturation. Results: Overall satisfaction was high with modified technique. Scar was minimally noticeable on both upper and lower lip especially. Balanced Cupid's bow and symmetric vermilion tubercle were made with relatively small size of flap compared to conventional $Abb{\acute{e}}$ flap. An accompanying benefit was reduced ectropion of lower lip, which made balanced upper and lower lip protrusion with more favorable profile. Conclusion: A new modified $Abb{\acute{e}}$ flap technique showed great satisfaction. It is worth considering in secondary cleft lip patient who has central lip shortage and asymmetry of upper lip vermilion border line. Our technique is one of the substitutes for correction of horizontal and central lip deficiency with asymmetric Cupid's bow.

• 복식
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• 제23권
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• pp.197-209
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• 1994

The purpose of this study is to present a way to analyze and review the subjective view of the aesthetic for dress based on the framework of the aesthetic categories suggested by aesthetics. In order to define objectivism and subjectivism of the aesthetic of dress, theoretical studies on the aesthetic categories of dress were precded. And empirical studies on the aethetic categories of dress for selected period, the Renaissance (16th century) and the Baroque(17 th century). The results were follows : The objectivism of the aesthetic is the point of that an object causes human to feel and judge aesthetically, that is that of dress means judge aesthetically, that is that of dress means formal characteristic of dress and pervasive ideology expressed in dress. the subjectivism of the aesthetic is the point that the aesthetic is ruted in human, that is that of dress has been studied in relation to the image, the aesthetic consciousness m, or the aesthetic categories of dress. Especially, the aesthetic category is one of the universal and valid methods for the analysis of subjectivism of the aesthetic for dress. This study includes beauty, grace, elegance , the sublime, the tragic , the comic, aptness, ugliness as aesthetic categories of dress . Beauty is perfection and rule. Grace pleases human by sense. Elegance comes from the harmony of sense and spirit. the sublime comes into existence that human feels pleasure as well as displeasure simultaneously when human is overehelmed by objects. The tragic is the sense of the present of something valuable even if there is suffering. The comic is the sense of the presence of something amusing even if there is displeasure caused by contradiction. Apteness means utility in terms of the objectivism and , formality in terms of the subejctivism. Ugliness is opposite to beauty. As the result of emperical studies, the aesthetic categories of the Renaissance dress showed harmonious, balanced, and symmetrical beauty, and the magnificent, and enlarged sublime. In addition to these , grace and elegance were also found to some extent. Aesthetic categories of the Baroque dress show feminie, soft, cheerful, and fantastic grace, asymmetric , disarmonious, and extraordinary uglinesss, and the magnificient , grave, and dignified sublime.