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A Study of Radiation Dose and Quality by Using Added Filtration in Chest Radiography (흉부(胸部) X선촬영시(線撮影時) 부가여과사용(附加濾過使用)에 따른 선양(線量)과 선질(線質)에 관(關)한 연구(硏究))

  • You, Byung-Hun;Chu, Sung-Sil;Huh, Joon
    • Journal of radiological science and technology
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    • v.10 no.1
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    • pp.13-23
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    • 1987
  • Author has studied for finding the method of decreasing the radiation dose and increasing diagnostic range in chest X-ray radiography. The study for the added filter thickness from half value layer to 1/8 value layer by decreasing curve and research for the exposure factors, decreasing ratio of radiation dose, ratio of scatter ray and image quality in chest X-ray radiography. The results were as follows: 1. By using the rare earth intensifying screen system at 120 Kvp, the sensitivity is increased by times and the exposure ratio is decreased 0.22 by comparison with the $CaWO_{4}$ intensifying screen system at 80 Kvp. 2. By using Al added filter of 1/8 value layer, the scatter ray is increased more than no filter, But the scatter ray is decreased more in $G_{4}/RxOG$ intensifying system than in LT-II/Rx intensifying system. 3. At 120 Kvp, the image quality value of $G_{4}/RxOG$ system is increased more than LT-II/Rx system compared with slight decreasing image quality value at 80 Kvp. Concluded that by using the added filter could decrease the radiation dose by 1/3 and obtain effective image quality with the added filter at high voltage hard exposure.

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A STUDY ON MAGNETIC RESONANCE IMAGING OF THE TEMPOROMANDIBULAR JOINT (악관절에 대한 자기 공명 영상의 연구)

  • Kim Hyung Sik;Kim Jae Duk
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.20 no.2
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    • pp.187-198
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    • 1990
  • Examinations of the temporomandibular joints were performed on a 1.5 Tesla magnetic resonance (MR) system. An MR surface receiver coil 3 inch in diameter was placed on plastic frame, the patient's head being placed in the frame so that the coil was pressed against the temporal region. In taking advantage of the magnetic resonance imaging that has been studied briskly till now, author obtained the images of parasagittal and paracoronal planes about the temporomandibular joint by using MPGR (Multi-Planar Gradient Recalled), GRASS (Gradient Recalled Acquisition in the Steady State), and CSMEMP (Contiguous Slice Multiple Echo, Multi-Planar), that differ from the Spin Echo pulse sequence which the previous authors used. Five subjects with no symptoms of temporomandibular joint pain and dysfunction were studied. The plane images obtained by these methods were compared with those by Spin Echo pulse sequence. The results were as follows: 1. The optimal repetition times (TR) and echo times (TE) for T.M.J. image were; a. 400 msec and 18 msec in PMGR pulse sequence. b. 40 msec and 12 msec in GRASS pulse sequence. c. 700 msec and 30 msec in CSMEMP pulse sequence. d. 500 msec and 20 msec in Spin Echo pulse sequence. 2. When the MPGR pulse sequence was using, T2-weighted image was obtained in very short time. On the image of the paracoronal plane by GRASS pulse sequence, meniscus showed the moderate signal intensity, and the meniscus and its anteromedial, posterolateral attachments were observed definitely with gray color. 4. The signal intensity of Spin Echo pulse sequence was equal to that of CSMEMP pulse sequence, but the image by CSMEMP pulse sequence showed relatively lower level in its resolution.

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An Analysis of the Image of Nurses Portrayed on Korean TV Dramas (TV 드라마에 비친 간호사의 이미지)

  • Yom, Young-Hee;Kim, Kyunghee;Son, Heesook;Lee, Jung Min;Jeon, Jae-Hee;Kim, Myoung Ae
    • Journal of Korean Clinical Nursing Research
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    • v.21 no.3
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    • pp.412-423
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    • 2015
  • Purpose: The purpose of this study was to analyze the image of nurses portrayed on Korean TV dramas. Methods: Among the medical dramas aired on TV from 2000 to 2013, sixteen different Korean TV dramas were selected. For analyzing the dramas, 'the checklist for monitoring media images of nurses and nursing' was used after obtaining the permission from the original author. Two evaluators evaluated each drama and synchronized the final scores after comparing individual scores. Results: The roles of nurses were found to be such a supportive role (93.8%), and a professional role (75.0%). The nurses images portrayed on the selected TV drama included being kind, accountable, having humanism (81.2%), and professional insights (56.2%), whereas nurses's administrative role such as a manager were not represented. A half of scenes that nurses showed up, nurses were asking asking for help to doctors or other hospital administrators. Conclusion: Since TV dramas on air in Korea still underrepresented the roles of the professional nurses, providing the media with advice to improve the images of nurses is necessary in future. Concrete and sustainable strategies for improving nurses image are required.

Landscape Information Acquisition and Visualization Technique for Rural Landscape Planning (농촌마을 경관계획을 위한 경관자료의 수집과 가시화기법)

  • Han, Seung-Ho;Cho, Tong-Buhm
    • Journal of Korean Society of Rural Planning
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    • v.10 no.2 s.23
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    • pp.35-42
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    • 2004
  • This study aimed at establishing the multi-ranged approach on data acquisition technique for rural landscape planning, which tried categorization, grading and transferring of landscape elements in the more detailed level. For the systematic management of database for the topographic informations in the village level, a kind of the aerial photographing techniques with UAV(Unmanned Aerial Vehicle) was used and its resultant data for the landscape simulation of the rural village, which in turn helped the convenient approach to understanding of its comprehensive spatial structure. The image data from aerial photography was systematically processed through; First, after revision of the distorted one, the image map was adjusted with the topographical and cadastral maps. Second, the farm houses and buildings, and other facilities difficult to find out in the topographical map was digitally read from the adjusted image. The topographical landscape view of rural village was simulated on the base of DEM(Digital Elevation Model) and the 3-dimensional shapes of farm houses and buildings were automatically modelled using the input system developed by the author. In conclusion, the aerial image information adjusted with the edited maps could give more intuitive and detailed villagescape than the ordinary one and through landscape simulation of the rural village, its topography, features of houses/buildings and spatial distribution of land uses were effectively reproduced. And, by the linkage between field survey and photographed/simulated results of the typical landscape elements using hyper-link method, it would be expected to develop as an effective visualization technique of rural landscape.

A Study on the Image Quality and Patient Dose in Erect Simple Abdomen Radiography (복부 선자세 단순촬영시 화질과 피폭선량에 관한 연구)

  • Kim, Jung-Min;Hayashi, Taro;Ishida, Yuji;Sakurai, Tatsuya
    • Journal of radiological science and technology
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    • v.21 no.1
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    • pp.29-34
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    • 1998
  • The purpose of simple abdomen erect projection is to see the fluid level which indicates gastrointestinal ileus or free air due to perforation. we do not have to insist on low kVp technique in simple abdomen erect position as long as we can detect the fluid level and free air shadow. Therefore, the author tried to decrease patient dose by high kVp technique and to improve the image quality due to motion artifact by reduction of exposure time. [Methods] Experiment 1. * screen/film SRO1000/HRH * exposure factor : $140\;kvp{\pm}5\;kv$ with added filters, 200 mA, 0.01 sec * phantom : Acryles : 15.0 cm(equivalent to 17 cm body thickness) 17.5 cm(equivalent to 21 cm body thickness) 20.0 cm (equivalent to 25 cm body thickness) With the exposure factor for same film density($D=0.8{\pm}0.1$) and with the materials above, we tried to find out entrance skin dose and gonad dose for both male and female. Experiment 2. Burger's phantom radiography were checked to see whether there was any change of image quality according to the kVp and the added filters. Experiment 3. Using rotating meter(self made), we examined the motion artifact and the exposure time limitation. [Results and conculution] 1. Using high voltage technique of 140 kVp with added filter, Skin dose, testicle dose and ovary dose decrease to 89.3%, 47% and 71.4% respectively compare to 70 kVp technique, 2. No great changes of Burger's phantom image has detected as from 70 kVp to 140 kVp and the air hole size of Burger's phantom over 0.028 cc(Diameter 3 mm, hight 4 mm) can be distinghished. 3. 0.01 sec(1 pulse) exposure time is possible in the single phase full wave rectification that why we can quitely reduce the unsharness caused by patient's movement.

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A Study on the Neo-Avantgarde Tendency Expressed in the Modern Make-up -with the Main Point of the Late 1990's Catwalk- (현대 메이크업에 나타난 네오아방가르드 경향에 관한 연구 -1990년대 후반 캣워크를 중심으로 -)

  • 장미숙;양숙희
    • The Research Journal of the Costume Culture
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    • v.7 no.3
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    • pp.72-92
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    • 1999
  • The purpose of this thesis is to review relationship between various expression method in modern make-up and the tendency of Neo-Avantgarde. In this paper, the author classified the distinctive characters in Neo-Avantagarde with Historicism, Decadence, Humor, and Inhumanism and explained innovation and creatio which is manifested in the late 1990\`s make-up by studying Neo-Avantgarde tendency expressed in modern make-up. The results are as follows. 1. The Historicism in modern make-up is expressed in Japanese Kabuki Make-up, Chinese Pecking Opera make-up, and Primitive mask Make-up in Africa. 2. The Decadence is manifested in Tattoo make-up which is expressing fetishism and fin-de-냗칟 image, and Snobism Make-up which is expressing selg-ostentation and eroticism with artificial nail and eyelash. 3. The humor appears to the Character Make-up copying the characters in doll plays, animation and juvenile story. In addition it is showed in Kitsch Make-up, which has vulagr, rustic and childish image by wearing so diffusive and cheap ornaments. 4. The Inhumanism is appeared in Graphic Make-up which is in the pursuit of the visual happiness. It includes simple geometrical type, drawing and coloring. It is also showed in Vampire Make-up, which means the make-up style mading horro, hizarrerie, and mistery by primary color(black and red) make-up. As the above, Neo-Avantgarde can account for the diversity and pluralism of contemporary make-up.

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A Study on the Image for Smoking among the Students (중 . 고등학생의 담배의 이미지에 관한 조사연구)

  • Kim, Myung;Ko, Seung-Deuk;Park, Ju-Mi;Kim, Sun-Hee;Ko, Sun-Hye
    • Korean Journal of Health Education and Promotion
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    • v.6 no.2
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    • pp.76-86
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    • 1989
  • In order to promote an anti-smoking education, we must understand how students imagine about smoking. The author has studied the image for smoking among 856 students in an openended method. The survey was conducted in April and May of 1989. The answers have been grouped into 49 response categories. 79.7% of the categories reflect a negative view of smoking. 34.4 % of the 49 evaluate smoking from a physical viewpoint; 33% from an emotional viewpoint; and 23.9% from an ethical viewpoint. "The most common response is that smoking is "Bad for the health". The next most common responses are "Harmful for people nearby". In order to effectively carry out anti-smoking education for your people, emotional and ethical aspects, as well as physical aspects, should be considered. Other important considerations are sex, grade.derations are sex, grade.

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Dialectical Images: William Carlos Williams's Avant-Garde Poetry

  • Kim, Hongki
    • Journal of English Language & Literature
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    • v.56 no.3
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    • pp.445-459
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    • 2010
  • William Carlos Williams discovers important sources of inspiration in the revolutionary avant-garde movements, in particular, Dada and Surrealism and attempted to embody the innovations in them in his poetic theory and practice. Williams's passion to create an indigenous American poetic work is compatible with his Dadaist experimentation with objets trouvés. Williams pays deep attention to objets trouvés, physical objects and marginalized people he comes across and transcribes his observations with poetic words freed from their instrumental contexts. In his characteristic poems written in the 1920s and 1930s, Williams records the social ruination and his task to give voice to the conflictual and fragmentary character of modernity is pursued through the Surrealist formulation of montage. In the Surrealist formulation of montage, the dialectical image is a central trope for reading the myth of modernity; it is positioned as both subject and object in the historiographic narratives of Walter Benjamin and Williams. As Benjamin tries to obliterate all traces of the author in the Arcades Project, Williams's montage poems like Spring and All only disperse argument into materialistic, dialectical images. The dialectical image in Williams's poetics becomes an organon of historical awakening so that truth can emerge from an unmediated juxtaposition of "things."

A COMPARATIVE STUDY ON THE STANDARDIZED AND INDIVIDUALIZED OBLIQUE LATERAL TRANSCRANIAL RADIOGRAPHS OF THE TEMPOROMANDIBULAR JOINT (규격화 및 개인별 악관절사측방향 투사법에 관한 비교연구)

  • Sohn Young-Soon;Nah Kyung-Soo
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.22 no.1
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    • pp.97-108
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    • 1992
  • The author obtained 120 oblique-lateral transcranial radiograms by two projection methods from 30 subjects with clinically normal TMJ. The relative position of the condyle within the articular fossa and the quality of the radiographic images were compared in the standardized and individualized radiographic groups. The results were as follows: 1. The condylar position in the individualized radiographic group was more posterior than that in the standardized radiographic group (P<0.001). 2. The horizontal angle between the long axis of condyle and intermeatal line in the individualized group ranged from 0° to 31° (14.38°±7.55°), and the highest prevalence was found between 15 and 19° 3. The individualized group showed prominent radiopaque shadow of the anterior condylar border; the image detail was superior in the standardized group to that of the individualized group (P<0.05).

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RELATIONSHIP OF IMAGE MAGNIFICATION BETWEEN PERIAPICAL STANDARD FILM AND ORTHOPANTOMOGRAM (표준필름과 Orthopantomograph의 상확대에 관한 비교 연구)

  • Kim Young Tae;Park Tae Won
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.16 no.1
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    • pp.25-30
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    • 1986
  • The author studied the magnification ratio of teeth length in orthopantomogram through intraoral film taken by standardized paral1eing technique. In this study, intraoral radiograph and orthopantomogram were taken in 2 cases of dry skull and 36 adults (504 teeth). 1. The obtained results were as follows: In case of dry skull, the magnification ratio of standard films was 4.6% to 5.9% and that of Orthopantomograph 5 was 15.1% to 33.1%. The magnification ratio of to the standard film was 9.2% to 26.5% 2. In case of adults, the magnification ratio of Orthopantomograph 5 to the standard films was 9.5% to 24.6%. 3. There were no significant difference in magnification between left and right. 4. Anterior teeth had lesser magnification than posterior teeth. 5. It was considered that teeth length showed in Orthopontomograph 5 was magnified 15.4% to 31.3% than actual teeth length.

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