사지 연부조직 병소의 초음파 소견

전용석 최신의학사 1990 最新醫學 Vol.33 No.8

광 통신용 파장 (1550 nm) 에서 ZnxCd1-xTe 단결정계의 전기광학 계수

전용석,강현식,정길환 한국물리학회 2007 새물리 Vol.54 No.2

Nonlinear optical materials of Zn$_x$Cd$_{1-x}$Te single crystals, where $x$ = 0.0, 0.2, 0.4, 0.6, 0.7, 0.8, and 1.0, have been grown by using the Bridgman method and a vertical furnace. We have investigated the electro-optic (E-O) coefficient and the refractive index of Zn$_x$Cd$_{1-x}$Te single crystals at an optical communication wavelength (1550 nm). In the case of the CdTe ($x$ = 0.0) crystal, the E-O coefficient was $15.5 \times 10^{-12}$ m/V, which is the largest among the E-O coefficients of Zn$_x$Cd$_{1-x}$Te crystals. We found the CdTe crystal to be a good candidate for an ultrafast E-O modulator for THz communications because of its high sensitivity to femtosecond THz pulses, large E-O coefficient, and large signal-to-noise ratio. 비선형 광학 현상 중 전기광학 효과가 우수한 Zn$_x$Cd$_{1-x}$Te ($x$ = 0.0, 0.2, 0.4, 0.6, 0.7, 0.8 및 1.0) 단결정을 Bridgman법으로 성장시켜, 광통신용 파장 1550 nm에서 Zn$_x$Cd$_{1-x}$Te 단결정계의 전기광학 계수를 측정하였다. 이 파장에서 가장 큰 전기광학 계수는 $x$ = 0.0인 CdTe로 $15.5 \times 10^{-12}$ m/V 값을 얻었다. CdTe는 수 십 펨토초의 공간전자파의 펄스신호를 센싱할 능력이 있고, 이 파장에서 전기광학 계수가 커서 신호 대 잡음비 (SNR)가 크고, 극 초고속으로 운용할 수 있는 광통신용 모듈레이터를 제작하는데 적합한 것으로 나타났다.

국내 공연장 연구의 건축적 접근에 대한 동향 고찰

전용석 한국문화공간건축학회 2016 한국문화공간건축학회논문집 Vol.- No.53

The number of performing arts centers and that of people visiting the centers have been increasing consistently. So is the number of academic research papers related to performing arts centers. This Study concentrated on the preceding research analysis especially with architectural issues and tried to analyse its study trends. The findings are: First, the number of research paper has been increasing as the number of performing arts centers and that of audiences increase. Second, the research items with the most importance turned out to be stage and auditorium. Studies on backstage area for performers and staffs are showing numerical increment recently, but lobby and foyer for audiences and circulation system for different roles of people are still not being studied enough, relatively. Third, the number of research on performing arts centers with exclusive use - for instance, opera houses, concert halls, etc. - is increasing, compared to those with multi-purpose. As people's income rises and living environment gets advanced, it seems performing arts centers with better spatial and sound quality are being demanded. Finally, most of the researches have leant toward grand performance halls in size wise for their architectural subject. Mid and small sizes should also get academic attention since the number of those is much greater in reality.

유연성 페로브스카이트 태양전지 연구동향

전용석,Jeon, Yong-Seok 한국전기전자재료학회 2015 전기전자재료 Vol.28 No.11

정서지능 향상 프로그램을 활용한 배려와 나눔 함양

전용석 한국미래교육학회 2014 미래교육연구 Vol.4 No.1

학교생활을 하는 아이들을 보면 자신의 꿈을 위해 특기와 소질을 개발하기보다 점수 위주의 학업에 집중하는 모습이 대부분이고, 즐거운 학교생활을 위해 원만한 대인관계보다 자신만 아는 이기적인 생활태도를 나타내며 나아가 정서적 불안한 상태에 이르고 있다. 따라서 전인적 성장을 무엇보다 교육의 근본으로 여기고 있는 2009 개정 교육과정을 바탕으로 정서지능 향상 프로그램과 다양한 현장체험활동을 활용하여 자기 인식과 표현 능력, 감정이입 능력, 정서조절 및 대인관계 능력을 길러, 주위의 친구들을 배려하고 어려운 이웃을 생각하며 나누는 마음을 함양하고자 하였다. 이러한 환경에서 연구자는 무엇보다 우선적으로 자신의 감정을 조절하는 능력, 즉 안정적인 정서가 필요하다고 보았다. 따라서 안정적인 정서를 기르기 위해 정서지능 향상 프로그램을 활용한 배려와 나눔을 함양하였다. We can easily see that most students at schools happen to be more concerned with their grades and test scores rather than developing their skills and talents to reach their dreams. Due to this fact, they are more likely to have a hard time maintaining good relationships with their peers and often show selfish attitudes or behaviors that can lead to a state of emotional anxiety. Therefore, this study looks to foster the minds of the students through caring for their classmates and sharing with neighbors in need. This follows the 2009 Revised-National Curriculum goals, which has its foundation in the holistic development of students. It implements emotional intelligence development programs and a variety of field-experience exercises to reach these goals. During these programs and exercises the researcher thought that the ability to control one’s emotions was a priority. As a result of this research with emotional intelligence development programs, caring and sharing behaviors were further incrementally developed in students.

A Retrospective Study of the Management of Vulvodynia

전용석,김영준,심보선,윤하나,박영요,심봉석,정우식,이동현 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.1

Purpose: Vulvodynia is characterized by chronic vulvar pain caused by sexual intercourse and often results in female sexual dysfunction. Because the causes of vulvodynia are not clear, many patients do not receive optimal treatment. Recently, gabapentin and botulinum toxin A have both been shown to be effective treatments for vulvodynia. In this study, we retrospectively analyzed the clinical outcomes of botulinum toxin A and gabapentin treatment for chronic pain in women with this condition. Materials and Methods: Seventy-three women with vulvar pain were administered either gabapentin (n=62) or botulinum toxin A (n=11) injections. Effectiveness was measured by use of a visual analogue scale (VAS). We analyzed the treatment method, treatment duration, success of treatment, and side effects or adverse reactions. Results: Pain levels in both groups significantly decreased after treatment. In the gabapentin group, the VAS score decreased from 8.6 before treatment to 3.2 after treatment (p<0.001). The VAS score in the botulinum toxin A group was reduced from 8.1 to 2.5 (p<0.001). Side effects for both therapies were few and subsided with treatment with general antibiotics and nonsteroidal antiinflammatory drugs. Conclusions: Gabapentin and botulinum toxin A are safe and effective treatments for vulvodynia. This condition can cause sexual dysfunction and affect quality of life. However, with proper management, satisfactory outcomes for women with vulvodynia can be achieved.

[기술해설]제품 기술 동향 : 데이타 웨어하우스 시스템에 대한 벤치마크 결과의 분석

전용석,서상구,위영철 한국정보과학회 1997 정보과학회지 Vol.15 No.5

유방 종괴의 3차원 초음파 진단의 유용성과 제한점

전용석,정수영,양익,이경원,김홍대,신상준,정봉화,Cheon, Yong Seok,Chung, Soo Young,Yang, Ik,Lee, Kyung Won,Kim, Hong Dae,Shin, Sang Joon,Chung, Bong Wha 대한영상의학회 2001 대한영상의학회지 Vol.45 No.3

Purpose: To compare 3D ultrasound (3D-US) with 2D ultrasound (2D-US) in terms of their usefulness and limitations in the diagnosis of breast masses. Materials and Methods: We obtained 2D and 3D US images of 37 breast lesions present in 20 cases of fibroadenoma, nine of cancer, and eight of fibrocystic disease proven in a total of 26 cases [fibroadenoma (n= 13), breast cancer (n= 9), fibrocystic disease (n=4)] by histologic examination, and by clinical evaluation and clinical evaluation with sonographic imaging in eleven. When comparing 3D and 2D-US images we had no prior information regarding detection rate according to the size of lesions, whether or not internal and boundary echo patterns could be interpreted, accurate differentiation between tumorous and non-tumorous lesions, or the accuracy with which benign and malignant tumors could be differentiated. Results: For lesions of 1 cm or less in diameter the detection rate of 3D-US was lower than that of 2D-US, but for lesions over 1 cm there was no difference between the two modalities. In fibroadenoma and breast cancer, 3D-US was more useful than 2D-US for the evaluation of both internal and boundary echo, but with fibrocystic disease and in the diagnosis of tumor/non-tumor, there was no significant difference. In breast cancer, however, 3D-US more accurately determined malignancy, and in fibroadenoma, because of the pseudospicule revealed by 3D-US, this modality was less exact in determining benignancy. Conclusion: In the evaluation of internal and boundary echo in breast mass diagnosis, 3D-US was more useful than its 2D counterpart. For lesions of 1 cm or less in diameter, however, the detection rate of 3D-US was low, and since in some benign cases a pseudospicule was apparent, the possibiliy of confusion with malignancy arose. For these reasons, the usefulness of 3D-US was limited. 목적: 유방 종괴의 진단에 있어서 2차원 초음파 진단과 비교하여 3타원 초음파진단의 유용성과 제한점을 알아보고자 하였다. 대상과 방법 : 37예의 유방종괴에 대하여 각각 2타원 초음파(HDI-3000, ATL, U.S.A.)와 3차원 초음파(Voluson 530D, Medison, Korea)를 이용하여 영상을 얻었다. 유방종괴는 섬유선종 20예, 유방암 9예. 및 섬유낭성질환 8예 등이었으며 섬유선종 13예, 유방암 9예, 및 섬유낭 성질환 4예는 병리조직학적으로 화친되었으며 나머지 11 예는 영상소견과 임상적 소견 및 초음파 결과를 토대로 진단하였다 전향적으로 사전 정보 교환 없이 각각 2타원 및 3타원 초음파 검사를 시행하여 병변의 크기에 따른 발견을, 내부에코 판별능, 경계에코 판별능. 종양과 비종양의 감별 진단에 있어서의 정확도, 및 종양에 있어서 양성과 악성진단의 감별의 정확도를 비교 분석하였다 결과: 크기가 1 cm 미만인 병변의 발견율은 2차원 초음파검사가 3차원 초음파검사보다 높았으나 1 cm이상의 병변은 2차원과 3차원 초음파검사간에 차이가 없었다 내부에코 판별능과 경계에코 판별능에서는 3차원 초음파검사가 2차원 초음파검사보다 섬유선종과 유방암에서는 더 유용하였으나 섬유낭성질환에서는 2차원 초음파검사와 큰 타이가 없었다 종양과 비종양의 감별진단의 정확도에서도 3차원 초음파검사와 2차원 초음파검사가 큰 타이를 보이지 않았으나 3차원 초음파는 유방암인 경우 악성도 예측에 있어서는 우수하였고 섬유선종의 경우에는. 3차원 초음파검사가 영상재건도중 발생하는 가성돌기로 인해서 2차원 초음파검사에 비해 양성도 예측률이 낮았다. 결론: 유방 종괴의 진단에 있어서 3타원 초음파진단은 2차원 초음파진단에 비하여 내부에코 판별능 및 경계에코 판별능에 있어서 유용한 소견을 보였다. 그러나 1 cm 미만의 작은 병변의 발견율이 낮고. 양성 종양의 일부에서 가성돌기 소견이 보여서 악성 종양과 혼돈을 일으킬 수는 있는 제한점이 있는 것으로 사료된다

하드디스크 읽기채널용 CMOS 전치증폭기 설계 ( The Design of Hard Disk Read Channel Preamplifier )

전용석,이성대 대한전자공학회 1994 대한전자공학회 학술대회 Vol.1994 No.7

2LB-12 Microphase separated structure of amphiphilic polymer ionomers locked in by cross-lin~king : Effect of chain length of ionic groups

전용석,김주영,서경도 한국공업화학회 1999 한국공업화학회 연구논문 초록집 Vol.1999 No.1

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