• 한국언론정보학보
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• 제50권
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• pp.121-142
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• 2010

이 논문은 법을 소재로 한 TV 프로그램이 구성하는 현실과 법이미지에 대한 분석 연구이다. 법체계를 구성하는 법문화나 법규범은 배타적이고 폐쇄적인 특성 때문에 일반인들이 접근하기에 쉽지 않다. 그러나 이러한 법적인 내용이 미디어를 통해 방송 언어로 재현될 때는, 정보 제공 기능과 오락 기능은 물론 현실을 구성하고 교육하는 역할까지 수행하는 경우가 많다. 실제 일어났던 사건을 재연의 형식으로 되돌아보는 <실화극장－죄와 벌>도 그러한 사례 중의 하나이다. 이 리얼리티 프로그램은 현실의 사건을 재현하여 수용자들에게 오락과 정보를 제공하고, 드라마와 다큐멘터리의 기법을 혼합하여 법체계 및 법적 쟁점들에 대한 의미를 구성한다. 이때 미디어를 통해 재현되는 법은 현실적인 사회구조에 대한 인식과 연관되어 의미를 구성한다. <실화극장－죄와 벌>의 경우, 법의 권위를 강화한다는 소위 'CSI 효과'보다는 대립 구조로 사회를 파악하고 개인과 법의 관계를 고민하게 만드는 의미가 더 큰 것으로 분석되었다. 결국 TV 법정 프로그램은 법체계를 교육하는 상징체계의 역할뿐 아니라 현실의 법과 사회구조와 가치에 대한 의미를 구성하는 기구 역할을 한다고 볼 수 있다.

• 대한방사선기술학회지:방사선기술과학
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• 제43권6호
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• pp.489-494
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• 2020

The Law method is observing the temporal bone. There are two types of methods: the double angle method, which manipulates the center ray angle of the tube twice, and the single angle method, which manipulates once. The purpose is to increase the reproducibility of the image by making vertical incidence by making an assistive device using a 3D printer. Two assistive devices with a wedge-shaped 8.5 × 10 × 2.3 cm, an inclined surface of 7.5 cm, and an inclination angle of 15° were fabricated. Assistive devices can be combined with each other in the form of grooves, and PLA (Poly Lactic Acid) is used as a material. In the first experiment, 10 examiners operated the tube 15° in the caudad direction and 15° in the anterior direction, and measured it with a protractor to conduct a reproducibility experiment. Second, two examiners acquired vertically incidence images using the existing law method and assistive devices, and measured the distance between each measurement point to evaluate the reproducibility. The tube center ray angle reproducibility experiment was not statistically significant, but the angle difference was up to 9° between examiners. The reproducibility experiment of radiographic images was not statistically significant with the conventional method, and the method using an assistive device was statistically significant. Therefore, regardless of skill level, an image capable of securing reproducibility, which is the advantage of vertical incidence, could be obtained.

• 대한방사선기술학회지:방사선기술과학
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• 제44권5호
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• pp.435-441
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• 2021

The purpose of this study was to evaluate the quality of images and to quantitatively measure and analyze the dose of scattered ray to the organs, which were highly sensitive to radiation according to the use of cylinder cone in mastoid process radiography. When the cylinder cone was not used, the SID was 100cm and the field size was 24 × 36 cm(864 cm²). When using the cylinder cone which was a circle, the SID was 70 cm, the radius was 10.5 cm and field size was 86.59 cm². As a result of the study, SNR of the image quality evaluation was measured to be 2.58 for Law method and 3.90 for Stenver's method when not using cylinder cone, and 2.87 for Law method and 14.67 for Stenver's method when using cylinder cone. CNR was measured to be 0.03 for Law method and 0.04 for Stenver's method when cylinder cone was not used, and 0.04 for Law method and 0.05 for Stenver's method when using cylinder cone. When the cylinder cone was not used, the scattered ray dose was measured to be 0.10 mGy in the right eyeball, 0.30 mGy in the left eyeball, 2.02 mGy in the parotid gland, and 0.29 mGy in the thyroid gland for Law method and to be 0.03 mGy in the right eyeball, 0.12 mGy in the left eyeball, 1.43 mGy in the parotid gland, and 0.09 mGy in the thyroid gland for Stenver's method. When the cylinder cone was used, the scattered ray dose was measured to be 0.05 mGy in the right eyeball, 0.03 mGy in the left eyeball and the parotid and thyroid gland were below the measurable values for Law method and all areas were below the measurable values for Stenver's method. This was found to be statistically significant(p<0.000).

• 동력기계공학회지
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• 제15권4호
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• pp.25-30
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• 2011

This study is made to provide with a method for correcting the geometric distortion of the digital radiography image by analytical approach based upon the inverse square law and Beer's law. This study is aimed to find out and improve a mathematic model of nonlinear type. Variations in the alignment of the X-ray source, the object, and imaging plate affect digital radiography images. A model which is expressed in parameter values; e.g, angle, position, absorption coefficient, length, width and pixel account of radiography source, is developed so as to match the sample image. For the best correction of the digital image that is the most similar to the model image, a correction technique based upon tangent is developed; then applied to the digital radiography images of steel tubes. As a result, the image correction is confirmed to be made successfully.

• 대한전자공학회논문지SP
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• 제45권4호
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• pp.71-77
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• 2008

이 논문은 산업용 방사선영상을 비선형왜곡의 영향으로부터 복구하는 방법을 제시한다. 비선형 형태의 모델을 구현하기 위해 역자승법칙과 비어의 법칙에 근거한 해석적 방법을 고안한다. 방사선 선원과의 위치설정에 따른 다양성에 기인한 기하학적 영향이 디지털화된 영상에 반영된다. 각도, 위치, 흡수상수, 길이, 너비 및 화소수 산출 등과 같은 파라미터 값으로 표현하는 모델관련 특성을 샘플영상과 일치하도록 모델 내에 수식적으로 규정하였다. 모델과 최근접한 영상으로의 복구를 위한 탄젠트 기울기 기반 보정기법을 고안하였다. 이 방식을 강판튜브 방사선영상에 적용하여 영상을 복구한 결과가 제시되고 논의된다.

• 대한디지털의료영상학회논문지
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• 제10권2호
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• pp.11-16
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• 2008

Images of medical treatment on PACS environment are digitized and they make saving and transmission of patient's information easy with CD format causing increase of patients transfer rate between hospital and data transmission as well. Figuring out the configuration of confining status of copied images of medical treatment with CD format and present the appropriate way of identification for personal information. 20 general hospital over 500 beds which are utilizing PACS currently. Questionnaire investigation focusing on PACS operation center and it's management people. In accordance with the law of securing personal information of public organizations, it says "Anyone who wants to see his or her information via representative he or she needs to make a letter of attorney and turn in this to the president of it's possessing facility" in the article 16. Based on the investigation of general hospital for CD copy issue status near metropolitan area, 8 out of 20, were issuing CD copy through personal identification process(the person oneself and representative) and 10 general hospital were doing by getting signature of receiptor only without identification of the person oneself and 2 general hospital confirmation process is not at all. By the law of securing personal information of public organization, article 16, confirmation process is supposed to mandate lawfully with a letter of attorney when there is any request of reading and/or copies of one's information. But in reality, there were no consistent rules on reading, the process and coverage of copy issue, rejection coverage of copy issue of CD copy in each general hospital PACS operation center. Therefore there is a big need for consolidated format which is applicable by law when the representative requests to issue of CD copy that is storing medical treatment images. By issue through this consolidated format, securing medical information of individual and systemic operation and management will be valid and effective.

• 한국식생활문화학회지
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• 제28권2호
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• pp.177-185
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• 2013

This study analyzed restaurant table settings with Gestalt's law of visual perception to obtain basic data for future marketing strategies. The research uses methods that involve applying images of restaurant table settings to Gestalt's law of visual perception, doing content analysis, and conducting a frequency analysis as well as a Chi-square test for classification analysis by visual perception. Results show a significant difference in the laws of visual perception, especially in the laws of nearness and closure, between table settings of different countries and backgrounds, such as Korean, Japanese, Chinese, Western cultures. In terms of the law of nearness, Chinese dishes were low, while other countries' dishes and Korean dishes showed high figures. In terms of the law of closure, Japanese dishes and western dishes had low values, while other countries' dishes and Korean dishes were high in their closure. Further studies on consumer awareness by visual perception classification need to be conducted.

• Applied Microscopy
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• 제40권2호
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• pp.117-123
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• 2010

본 연구에서는 의생물 시료에 대해 정량적 전자토모그래피의 기본 전제 조건인 Beer's law를 실험적으로 검증하였다. 시료는 의생물 시료와 비슷한 흡수계수를 갖는 카본 지지막과 latex sphere의 시료를 선택하였으며, 연속적으로 기울어진 TEM 이미지를 획득하였다. 우선, 전자토모그래피를 수행하여 카본 지지막과 latex sphere의 기본 상태를 파악하였다. Beer's law의 검증을 위해 각각의 물질에 대해 경사각 기울기에 따라 입사빔의 강도와 투과빔의 강도의 변화를 측정하여 회귀분석을 수행하였으며, 그 결과 RMS값 0.976의 범위에서 선형적인 관계를 확인할 수 있었다. 또한 Beer's law를 이용하여 카본 지지막과 latex sphere에 대한 각각의 상대적인 흡수계수를 구했으며, 그 값은 대략 1.71(5)/${\mu}m$과 2.67(6)/${\mu}m$으로 경사각 기울기에 대하여 일정하게 유지됨을 알 수 있었다. 따라서, 정밀한 실험조건에서 입사빔의 정보를 유추할 수 있다면 의생물 시료에 대해 엄밀한 Beer's law가 성립하는 정량적인 전자토모그래피가 수행될 수 있을 것으로 기대된다.

• 한국통신학회논문지
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• 제18권5호
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• pp.663-674
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• 1993

본 논문에서 인간의 시각특성을 고려한 적응적 DCT 영상 부호화 방법이 제안되었다. 인간의 시각은 어두운 부분에서 잡음에 상대적으로 덜 민감하다. 이러한 특성은 Weber의 법칙으로 설명된다. 즉, Weber의 법칙은 인간의 감지가능차(j.n.d)가 영상의 밝기에 비례함을 말한다. 그러므로 이러한 특성이 영상처리에 응용될 때 밝은 영역에서 잡음을 줄이는 것 보다는 어두운 영역의 잡음을 줄이는 것이 중요하다. 따라서 본 논문에서는 DCT 계수의 AC 계수를 그 블럭의 평균적 밝기를 의미하는 DC 계수로 정규화함으로써 상대적 어두운 부분의 AC 계수를 세밀하게, 밝은 부분의 AC 계수를 거칠게 양자화하였다. 주관적 평가 결과 낮은 비트율에서, 제안된 부호화 방법이 Weber의 법칙을 고려하지 않은 방법보다 향상됨을 알 수 있었다.

• 천문학회보
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• 제43권1호
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• pp.54.1-54.1
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• 2018

For space weather forecast, it is important to determine three-dimensional parameters of coronal mass ejections (CMEs). To estimate three-dimensional parameters of CMEs, we have developed a full ice-cream cone model which is a combination of a symmetrical flat cone and a hemisphere. By applying this model to 12 SOHO/LASCO halo CMEs, we find that three-dimensional parameters from our method are similar to those from other stereoscopic methods. For several geoeffective CME events, we determine CME mass by applying the Solarsoft procedure (e.g., cme_mass.pro) to SOHO/LASCO C3 images. CME volumes are estimated from the full ice-cream cone structure. We derive CME mean density as a function of CME height for these CMEs, which are approximately fitted to power-law functions. We find that the ICME mean densities extrapolated from the power law functions, are correlated with their corresponding ICME ones in logarithmic scales.