• 한국환경과학회지
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• 제12권11호
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• pp.1137-1144
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• 2003

To provide evidence that the changes in oceanic environmental conditions are useful indices for predicting stock structure and distribution of the Pacific saury (Cololabis saira), the body length compositions and catch per unit fishing effort were examined in relation to the sea surface temperature(SST) anomalies in the Tsushima Warm Current(TWC) region. The size of the fish became larger(smaller) than the average in the same size category during the season of higher SST(lower SST) as opposed to the normal SST. The year-to-year changes in body size caused by the changes in the environmental conditions led the stock to be homogeneous during the period of high stock level from the late 1950s to early 1970s and in the 1990s. The changes in body size manifested by higher(lower) occurrence rates of larger (smaller) sized groups in relation to temperature anomalies suggest that the changes in the environmental conditions affect the distribution and the structure of the stock in the TWC region. Therefore, if the SST anomaly derived from satellite data is large enough in the early spring months(Mar. or Apr.), it is possible to predict whether or not sea temperature will be favorable for large sized groups of saury at normal or slightly earlier time of commencement of the fishery in spring(Apr.∼June).

• 대한조선학회논문집
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• 제58권1호
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• pp.24-31
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• 2021

In this study, we present experimental observations of artificial supercavitation generated by the injection of compressed air at multiple locations on the body. Experiments were conducted at a cavitation tunnel equipped with a special facility to remove injected air before returning to the test section. Artificial supercavitation, which is generated at a relatively low speed compared to natural supercavitation, is formed asymmetrically on the axis of the body due to the buoyancy effect. In order to accelerate the development of the supercavity and increase the area covering the body, an experimental device capable of additional injection from the body was designed and its performance was evaluated through the model test. The shapes of the supercavity generated by multi-injections of different combinations according to different flow speeds were analyzed using high-speed shadow images. The results show that multiple injections at suitable locations can effectively increase the length of the supercavity and consequently improve propulsion efficiency.

• Mycobiology
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• 제49권2호
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• pp.173-182
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• 2021

Recently, Cryptococcus pseudolongus has been reported as a new pathogen of shiitake (Lentinula edodes). However, its pathological properties are not much known. To further understand its impact on the mushroom, we investigated the pathogen's interactions with the mycelium of shiitake, histopathological properties, host range, and sensitivity to diverse antifungal agents. The strain C. pseudolongus DUCC 4014 inhibited the mycelial growth of L. edodes strain (cultivar Sanjo 701ho) and caused browning in the mycelia confronted with the yeast on PDA. Spray inoculation of the yeast caused an abnormal browning symptom on the cap and/or gills of three shiitake cultivars grown on sawdust media in vinyl bags. Scanning electron microscopic images of the abnormally browned parts of shiitake fruit body illustrated that mushroom tissues were loosed and dispersed in the middle and edge of the cap and the arrangement of basidiospores borne on basidia in the gills was disturbed compared to those of normal shiitake fruit body. Spray inoculation also led to developing abnormal browning on the harvested fruit body, indicating C. pseudolongus could be a problem during mushroom storage. But the yeast was not able to induce abnormal browning on mushrooms of Pleurotus ferulae, Pleurotus fostreatus, and Agaricus bisporus. But it induced browning only on button mushroom (A. bisporus) when they were inoculated after wounding. Tests with 16 kinds of fungicides revealed that the cell growth of C. pseudolongus could be inhibited by benzalkonium chloride at MIC 7 ㎍/ml and benomyl at MIC 3 ㎍/ml.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권11호
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• pp.4395-4412
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• 2020

The multisource image fusion has become an active topic in the last few years owing to its higher segmentation rate. To enhance the accuracy of multimodal pig-body feature segmentation, a multisource image fusion method was employed. Nevertheless, the conventional multisource image fusion methods can not extract superior contrast and abundant details of fused image. To superior segment shape feature and detect temperature feature, a new multisource image fusion method was presented and entitled as NSST-GF-IPCNN. Firstly, the multisource images were resolved into a range of multiscale and multidirectional subbands by Nonsubsampled Shearlet Transform (NSST). Then, to superior describe fine-scale texture and edge information, even-symmetrical Gabor filter and Improved Pulse Coupled Neural Network (IPCNN) were used to fuse low and high-frequency subbands, respectively. Next, the fused coefficients were reconstructed into a fusion image using inverse NSST. Finally, the shape feature was extracted using automatic threshold algorithm and optimized using morphological operation. Nevertheless, the highest temperature of pig-body was gained in view of segmentation results. Experiments revealed that the presented fusion algorithm was able to realize 2.102-4.066% higher average accuracy rate than the traditional algorithms and also enhanced efficiency.

• 미술자료
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• 제98권
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• pp.130-153
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• 2020

본 논문은 공주 마곡사 명부전에 봉안된 불상에 관한 문헌 검토와 양식적인 접근을 통하여 목조지장보살좌상과 석조시왕상의 제작 시기 및 조각승에 대해 살펴보고자 한 연구이다. 명부전 내에는 목조지장보살좌상을 중심으로 석조무독귀왕과 도명존자가 서 있고, 벽면을 따라 시왕상 및 권속 등이 배치되어 있다. 이 불상들은 1930년대 후반에 목조지장보살좌상은 청양 정혜사에서, 도명존자와 무독귀왕 및 시왕상 등은 임실 신흥사에서, 시왕도는 논산 정토사에서 옮겨온 것이다. 이제까지 마곡사 명부전 목조지장보살좌상은 석조시왕상 조성 시기인 1677년에 함께 제작된 것으로 알려져 있지만, 이목구비에서 풍기는 인상, 신체 비례, 착의법 등을 살펴보면, 17세기 전반에 활동한 수연(守衍)이나 그 계보에 속하는 조각승이 1620~30년대 만든 불상일 가능성이 높다. 특히 하반신을 덮은 대의자락의 두 번째 주름이 수직으로 늘어지고 끝자락이 하트 모양으로 마무리된 점과 그 옷주름을 중심으로 좌우 대칭을 이루며 낮게 펼쳐진 옷주름 처리 방식은 수연이 제작한 서천 봉서사불상(1619년)이나 익산 숭림사 불상(1634년, 옥구 보천사 조성)과 유사하다. 석조시왕상과 권속 등은 1677년에 조각승 성일(性日)이 수화승으로 제작한 것을 조성발원문을 통해 알 수 있지만, 성일이 수화승으로 만든 유일한 불상이고, 같이 제작에 참여한 작가들의 활동을 정확히 알 수 없어 새로운 자료가 공개되어야 구체적인 조각승의 계보가 밝혀질 것이다. 기존 연구에서 성일이 불상 제작과 중수에 참여한 활동을 살펴보면, 혜희(慧熙) 계보 또는 운혜(雲惠)(운혜(雲慧)) 계보에 속하는 조각승들과 함께 공동 작업을 하여 두 조각승 집단과 밀접한 관련성이 있을 것으로 추정된다. 마곡사 시왕상은 호남이나 영서 지역에서 주로 제작되는 흙이나 나무가 아니라 돌로 제작되었으며, 영남에서 유행한 시왕상의 형태나 착의법 등과 유사하여 호남보다 영남에서 주로 활동한 조각승들의 작품으로 보인다. 앞으로 충남 지역 목조지장보살좌상과 석조시왕상의 체계적인 조사가 이루어진다면 조성 시기와 작가에 관한 심층적인 분석이 가능할 것이다. 그리고 이러한 특징들에 대한 분석이 진행된다면, 17세기 후반 영남 지역 석조불상과의 비교를 통해 호남에서 제작된 석조불상을 주도적으로 만든 조각승과 활동 내용이 밝혀질 것이다.

• 대한방사선치료학회지
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• 제35권
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• pp.41-51
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• 2023

목 적: 본 연구는 폐암 환자의 정위체부방사선치료 시(Stereotactic Body Radiation Therapy, SBRT) 기준선(Baseline) 변화에 따른 3D-CBCT(Cone Beam Computed-Tomography)와 Gated-CBCT의 영상 품질(Image quality)을 비교 분석하여 호흡에 따른 움직임의 보정에 유용한 CBCT 촬영 방법을 찾고자 한다. 대상 및 방법: QUASAR^TM(Modus Medical Devices Inc, Canada) 팬텀에 지름이 3 cm인 고체 종양 물질(Solid Tumor)을 삽입하여 팬텀의 속도를 주기 3 sec, 최대 진폭 20 mm 로 4DCT(4-Dimentional Computed-Tomography)를 촬영하였다. 전산화 치료계획시스템 Eclipse^TM을 이용하여 고체 종양 물질에 육안적 종양용적(Gross Target Volume, GTV)을 윤곽 묘사하였다. Truebeam STx^TM을 이용해 4DCT 촬영 시와 동일하게 설정한 후, 기준선 변화가 1 mm, 3 mm, 5 mm인 호흡 패턴을 팬텀에 입력하여 3D-CBCT(Spotlight, Full)와 Gated-CBCT(Spotlight, Full) 영상을 5회 반복하여 획득하였다. 획득된 영상을 4DCT 영상을 기준으로 신호대잡음비(Signal-to-Noise Ratio, SNR), 대조대잡음비(Contrast-to-Noise Ratio, CNR), 종양 체적 길이(Tumor Volume Length) 및 모션 블러링 비(Motion Blurring Ratio, MBR)를 측정하여 비교하였다. 결 과: Spotlight Gated-CBCT 영상이 기준선 변화에 따른 신호대잡음비가 평균 13.30±0.10%, 대조대잡음비가 평균 7.78±0.16%, 종양 체적 길이가 평균 3.55 ± 0.17%, 모션 블러링 비가 평균 1.18 ± 0.06%로 Spotlight 3D-CBCT보다 우수한 값을 보였다. 또한, Full Gated-CBCT 영상이 기준선 변화에 따른 신호대잡음비가 평균 12.80 ± 0.11%, 대조대잡음비가 평균 7.60 ± 0.11%, 종양 체적 길이가 평균 3.54 ± 0.16%, 모션 블러링 비가 평균 1.18 ± 0.05%로 Full 3D-CBCT보다 우수한 값을 보였다. 결 론: 3D-CBCT 촬영 영상과 비교하여 Gated-CBCT 촬영 영상이 기준선 변화에 따른 영상 품질이 우수한 값을 보였으며, 호흡으로 인한 모션 블러링 인공물(Motion Blurring Artifacts)의 영향이 적은 것을 확인했다. 따라서 단기간에 고선량을 전달하는 폐암의 정위체부방사선치료 시 불규칙한 호흡으로 인한 기준선 변화가 발생하는 경우 Gated-CBCT를 이용해 영상유도(Image Guide)를 하는 것이 유용하다고 판단된다.

• Journal of Korean Neurosurgical Society
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• 제29권5호
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• pp.615-622
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• 2000

Objective : Percutaneous vertebroplasty is an effective and minimally invasive procedure consisting of the injection of a PMMA(polymethyl methacrylate) into the vertebral body compression fracture with osteoporosis. Matherials and Methods : Twenty-eight procedures were performed for vertebral body compression fractures with osteoporosis in 25 patients(22 women, 3 men). The mean age was 65.9 years old. The inclusion criteria for percutaneous vertebroplasty were 1) acute vertebral body compression fracture with osteoporosis, 2) expected high operative morbidity in old age, 3) no neurologic deficits, 4) no or minimal canal enchroachment, 5) patient refusal of invasive surgery. All patients underwent MR images before the procedure. Under local anesthesia, after the percutaneous needle puncture of the involved vertebra via a transpedicular approach and venography using the water soluble contrast material, PMMA injection was introduced into the fractured vertebral body. Results : The procedure was technically successful in all patients. All patients experienced excellent pain relief (complete pain relief ; 10, marked pain relief ; 14). One patient experienced marked pain relief, however, the patient died during the follow-up period due to stomach cancer. There were twelve paravertebral tissue leaks, twelve paravertebral venous plexus leaks, four epidural leaks and one intradiskal leak, but no clinically significant complications occurred in all patients. Conclusion : Percutaneous vertebraoplasty is a valuable procedure in the treatment of vertebral body compression fracture with osteoporosis, providing immediate pain relief and early mobilization. MRI is the most reliable diagnostic tool for identifying painful fractured vertebral body.

• 복식
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• 제58권6호
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• pp.96-109
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• 2008

The proposes of this study were to exam the effects of internalization of sociocultural values toward appearance on adolescents' body image and clothing behaviors, and to analyze these effects by adolescents' sex and age variables. The research method was survey and the subjects were 447 male and female adolescents in Daejeon, Korea. The questionnaire consisted of 4 measuring instruments; internalization of sociocultural values toward appearance, body image, clothing behaviors, and demographic attributions. The data were analyzed by factor analysis, t-test, variance analysis, Duncan's multiple range test, using SPSS program. The results are as follows. First, most of adolescents showed positive attitude on sociocultural values toward appearance, and female and high school students revealed higher level of internalization than male and middle school students. Second, as a result of factor analysis, 3 factors emerged in body image(appearance interest, appearance evaluation, and weight concern) and 4 factors emerged in clothing behaviors(clothing interest & psychological dependency, clothing ostentation, clothing conformity, and clothing comfort). Third, internalization of sociocultural values toward appearance had important effects on adolescents' body image and clothing behaviors; the adolescents who had high level internalization showed more interest on their appearance and weight and higher clothing interest & psychological dependency and clothing ostentation and lower clothing comfort than other adolescents who had middle or low level internalization. Forth, internalization of sociocultural values toward appearance showed many different effects on body image and clothing behaviors by adolescents' sex and age variables.

• 복식문화연구
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• 제18권2호
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• pp.229-244
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• 2010

This study aims to discuss the type and characteristics of primitivism in the modern fashion of the $21^{st}$ century and, as a research method, the concept of primitivism as well as the transition of the patterns of primitivism expressed in modern art have been considered and reviewed through a variety of references. In particular, an empirical analysis of the works that have been created from 2000 to 2009 has been performed using domestic and overseas fashion and collection magazines. The characteristics of primitivism in modern fashion possess the following types of expression: First, Sensuality can be cited as one of the characteristics, either by using direct or indirect exposure of the human body, a silhouette which fits tightly to the body, or creating the effect of sensual beauty using animal fur or bird feathers. Second, Incantation: Masks symbolizing primitive incantation are used to cover the human face or primitive incantation is incorporated as a theme of hair accessories or fashion trinkets, etc. In addition, such decorations as tattoos and the body colorations of ancient tribes are reproduced in modern fashion by means of body painting, printing or other accessories, emphasizing the image of occult primitiveness. Third, Naturalness can be cited as one of the characteristics. Naturalness is emphasized in modern fashion not through artificial decorations and processing, but rather through different patterns of exposure by which natural purity can be felt or through the use of non-artificial materials which recalls primitive civilization. Forth, Playfulness is expressed in the form of graffiti or abstract letters and paintings, and the character of the play is often expressed by the use of grotesque images based on various distortions and exaggerations of the human body, the utilization of symbols of primitive incantation and body and/or facial painting. Fifth, Lastly 'folkishness is emphasized. Folk-like objects, facial decorations, exposure of the body and intense color contrasts typically represent the folkish characteristics.

• 대한방사선기술학회지:방사선기술과학
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• 제41권2호
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• pp.109-113
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• 2018

Despite the continuous development of software, it is continuously pursued to enlarge the examination area of FOV in order to reduce the factors of inconsistency in images that appear in continuous examination during wide area examination using contrast agent such as whole body angiography. In this study, we investigated the optimal FOV by comparing the SNR values according to the changes of FOV. The change of the FOV was gradually changed to $270{\times}200$, $300{\times}223$, $330{\times}244$, $360{\times}266$ and $380{\times}281$. SE images at TR 450 msec and TE 10 msec, FSE images at TR 2,000 msec, TE 80 msec, and GE images were scanned at TR 117 msec, and TE 16 msec. SNR values were calculated from the mean values of signal intensities of five phantom images and the signal intensity values of four background standard deviations. As a result of the study, the signal intensity and the SNR value according to the change of the FOV value gradually increased as the FOV was increased, but it was found that the SNR value decreased at a constant size. In conclusion, the results are different from previous studies that the SNR increases as the FOV increases. The cause of these results could not be confirmed. However methods that can be imaged and included within the effective FOV should be considered.