• 제목/요약/키워드: magnification

검색결과 693건 처리시간 0.03초

공공의료기관의 공공성과 수익성 상호관계에 대한 연구 - 지방공사의료원의 경영평가를 중심으로- (Profitability and Publicity of the Regional Public Hospitals in Korea - With focus on administration assessment of regional public hospitals -)

  • 이동원;윤방섭;남은우
    • 한국병원경영학회지
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    • 제12권2호
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    • pp.43-68
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    • 2007
  • The administration of a regional public hospitals are expending from profit preference to publicity preference. The weight rate for a profitability and publicity of performance assessment has changed from 84:16 which was resulted by the assessment executed firstly in 1989 to 39:61 as resulted in 2004, the final assessment execution in 2005. Regional public hospitals are exerting and promoting a magnification in public sector to raise up the public-score. With comparison between publicity scores and profitability scores in original scores basis excluding weight rate, the publicity scores ranked higher than profitability scores although the latter was higher by 2002. However, for the administration performance of the regional public hospitals, the deficits increased 11 times from \92.6billion deficits with \460.3billion cost increased by 457% although income as \367.7billion increased by 394% comparing the last 2004 year to the first 1989 year for profit & loss statement of a regional public hospitals. There was analysis for the relation in yearly basis partitioning publicity and profitability for the assessment scores of the to regional public hospitals confirm the accumulated deficits of the hospitals like this attribute to the extension of public sector. The result showed that there was distinct plus relationship from 1999 although a minus relationship in general until 1997 except 1992 and there is a more plus relationship as approaching 2004. That is, it is hard to tell that the accumulated deficits increase of regional government medical center attributed to extension of public sector. On the contrary, the analysis showed the extension of public sector has a mutual relationship with uplift of profitability Meanwhile, it showed that operation cost rate and labor cost are the factors which influence a revenue & expenditure rate among the profitability index according to the results of relation analysis for the representative index of profitability and that of publicity.

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Comparison of prosthetic models produced by traditional and additive manufacturing methods

  • Park, Jin-Young;Kim, Hae-Young;Kim, Ji-Hwan;Kim, Jae-Hong;Kim, Woong-Chul
    • The Journal of Advanced Prosthodontics
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    • 제7권4호
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    • pp.294-302
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    • 2015
  • PURPOSE. The purpose of this study was to verify the clinical-feasibility of additive manufacturing by comparing the accuracy of four different manufacturing methods for metal coping: the conventional lost wax technique (CLWT); subtractive methods with wax blank milling (WBM); and two additive methods, multi jet modeling (MJM), and micro-stereolithography (Micro-SLA). MATERIALS AND METHODS. Thirty study models were created using an acrylic model with the maxillary upper right canine, first premolar, and first molar teeth. Based on the scan files from a non-contact blue light scanner (Identica; Medit Co. Ltd., Seoul, Korea), thirty cores were produced using the WBM, MJM, and Micro-SLA methods, respectively, and another thirty frameworks were produced using the CLWT method. To measure the marginal and internal gap, the silicone replica method was adopted, and the silicone images obtained were evaluated using a digital microscope (KH-7700; Hirox, Tokyo, Japan) at 140X magnification. Analyses were performed using two-way analysis of variance (ANOVA) and Tukey post hoc test (${\alpha}=.05$). RESULTS. The mean marginal gaps and internal gaps showed significant differences according to tooth type (P<.001 and P<.001, respectively) and manufacturing method (P<.037 and P<.001, respectively). Micro-SLA did not show any significant difference from CLWT regarding mean marginal gap compared to the WBM and MJM methods. CONCLUSION. The mean values of gaps resulting from the four different manufacturing methods were within a clinically allowable range, and, thus, the clinical use of additive manufacturing methods is acceptable as an alternative to the traditional lost wax-technique and subtractive manufacturing.

Evaluation of marginal discrepancy of pressable ceramic veneer fabricated using CAD/CAM system: Additive and subtractive manufacturing

  • Kang, Seen-Young;Lee, Ha-Na;Kim, Ji-Hwan;Kim, Woong-Chul
    • The Journal of Advanced Prosthodontics
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    • 제10권5호
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    • pp.347-353
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    • 2018
  • PURPOSE. The purpose of this study was to evaluate the marginal discrepancy of heat-pressed ceramic veneers manufactured using a CAD/CAM system. MATERIALS AND METHODS. The ceramic veneers for the abutment of a maxillary left central incisor were designed using a CAD/CAM software program. Ten veneers using a microstereolithography apparatus (AM group), ten veneers using a five-axis milling machine (SM group), and ten veneers using a traditional free-hand wax technique (TW group) were prepared according to the respective manufacturing method. The ceramic veneers were also fabricated using a heat-press technique, and a silicone replica was used to measure their marginal discrepancy. The marginal discrepancies were measured using a digital microscope (${\times}160$ magnification). The data were analyzed using a nonparametric Kruskal-Wallis H test. Finally, post-hoc comparisons were conducted using Bonferroni-corrected Mann-Whitney U tests (${\alpha}=.05$). RESULTS. The $mean{\pm}SD$ of the total marginal discrepancy was $99.68{\pm}28.01{\mu}m$ for the AM group, $76.60{\pm}28.76{\mu}m$ for the SM group, and $83.08{\pm}39.74{\mu}m$ for the TW group. There were significant differences in the total marginal discrepancies of the ceramic veneers (P<.05). CONCLUSION. The SM group showed a better fit than the AM and TW groups. However, all values were within the clinical tolerance. Therefore, CAD/CAM manufacturing methods can replace the traditional free-hand wax technique.

Immunohistochemical Evaluation of Glucose Transporter Type 1 in Epithelial Dysplasia and Oral Squamous Cell Carcinoma

  • Pereira, Karuza Maria Alves;Feitosa, Sthefane Gomes;Lima, Ana Thayssa Tomaz;Luna, Ealber Carvalho Macedo;Cavalcante, Roberta Barroso;Lima, Kenio Costa de;Chaves, Filipe Nobre;Costa, Fabio Wildson Gurgel
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권1호
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    • pp.147-151
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    • 2016
  • Oral squamous cell carcinoma (OSCC) is the most common malignancy of the oral cavity and some of these have been documented in association or preceded by oral epithelial dysplasia (OED). Aggressive cancers with fast growth have demonstrated overexpression of some glucose transporters (GLUTs). Thus, the aim of this study was to analyze the immunohistochemical expression of the glucose transporter, GLUT-1, in OEDs and OSCCs, seeking to better elucidate the biological behavior of neoplasias. Fifteen cases were selected this research of both lesions. Five areas were analyzed from each case by counting the percentage of positive cells at 400x magnification. Immunoreactivity of GLUT-1 was observed in 100% of the samples ranging from 54.2% to 86.2% for the OSCC and 73.9% to 97.4% for the OED. Statistical test revealed that there was greater overexpression of GLUT-1 in OED than the OSCC (p=0.01). It is believed the high expression of GLUT-1 may reflect the involvement of GLUT-1 in early stages of oral carcinogenesis.

초상화 복식을 중심으로 본 퀸 엘리자베스 1세의 영화 의상에 관한 연구 (A Study of Queen Elizabeth I's Cinema Costumes Viewed from Her Portrait)

  • 성광숙
    • 복식
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    • 제62권8호
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    • pp.55-70
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    • 2012
  • In 16th century, during renaissance time, Britain's queen Elizabeth I, as a means to express her authority, had an exaggerated clothing styles and was the fashion leader of the time. Thus, through a media of Cinema, tried to find out the characteristics and different aspects of the history of clothing styles, of how they changed, ascertained, restored, and reappeared in the modern time. The research was based on the consideration of Elizabeth I's 33 portraits and her clothing styles; and the research is also from analysing the movies from 1937 to 2007, a total of 9 Cinema and 102 clothes. Movie costumes' most important mission is representing the cinema's timely and spatial background. Thus, it is inevitable that ascertaining and restoring Elizabeth I's portrait should be done. However, the movie costume has to show her dramatic lifestyle, dignity, absolute authority, and other visual images. In addition, the costume has to contribute in making artistic effect and thus the creativity of a designer to satisfy all these needs should be added. Based on the findings from the research, the characteristics of Elizabeth I's Cinema costume are first, ascertaining and restoring portraits, second, mixture of silhouette and detail depending on time period, third, partial change on clothing style design, fourth, emphasis of ruff collar, fifth, magnification colors, sixth, avoiding excessive swelling and decoration, and applying modern style on Protective costume. Thus, based on the research, creative design in Cinema clothing, plays an important part in the history of clothing design. I hope this research could work as a foundation reference for clothing design's history.

기울어진 회전 원판에 의한 원통형 용기내의 자오면 유동의 크기에 관한 연구 (Meridional Circulations in a Sliced Cylinder)

  • 김재원;임홍식
    • 한국전산유체공학회:학술대회논문집
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    • 한국전산유체공학회 1996년도 춘계 학술대회논문집
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    • pp.52-57
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    • 1996
  • Mixing is most important for developing an electric washer which transforms angular momentum from rotating solid wall to laundry clothes inside it. For magnification of this mixing effect, some inventions are introduced to washing machine system, i. e., washing plate, washing rod, and even for washing cap in a model of a Korean manufacture. However, the previous efforts show dissatisfaction up till now. In this paper, a triumph to enhance mixing effects to increase washing performance is presented and verified by numerical investigation. The present model to simulate a washing tub is the simple circular cylinder with two endwall disks which is completely filled with a viscous liquid. The present improvement is to change mounting position of a bottom disk of the model cylinder. Therefore, the aim of this work just proposes a new idea, which is numerically inspected, to a producer of washing machine, In detail, this invention is alternating the mounting position of a rotating bottom disk. Actually skewed pulsator is placed in steady of a flat disk, so the two endwall disks at top and bottom are not in parallel. The angle between an inclined bottom disk and the horizontal plane is fixed as 5 degree and physical domain to consider poses a sliced cylinder. Flow fields in both a right circular cylinder and the present improved model are fully depicted by numerical integration on a body fitted nonorthogonal regular uniform grid system. Numerical data to explain flow structure are plotted for understanding of the effects of the inclined disk. Also enhanced mixing effects by the inclined rotating disk are gauged by accurate numerical data used in this work.

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비디오 복호기에서의 어파인 변환을 이용한 적응적 에러은닉 기법 (Adaptive Error Concealment Method Using Affine Transform in the Video Decoder)

  • 김동형;김승종
    • 한국통신학회논문지
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    • 제33권9C호
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    • pp.712-719
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    • 2008
  • 시간적 에러은닉 기법은 손실된 데이터를 포함한 프레임과 이전프레임사이의 시간적 상관도(temporal correlation)를 이용하여 손실된 데이터를 복원하는 기술을 말한다. 이러한 시간적 에러은닉 방법은 블록단위의 복원기술과 화소단위의 복원기술로 나눌 수 있다. 본 논문에서 제안하는 방법은 어파인변환(affine transform)을 이용한 화소단위의 시간적 에러은닉에 관한 것으로 이는 손실된 블록내에 객체 또는 배경이 어파인 모델로 모델링 될 수 있는 기하학적 변환 즉 회전, 확대, 축소와 같은 변환이 있는 경우 더욱 높은 성능을 가진다. 또한 어파인 모델의 계산과정에 사용되는 움직임벡터가 서로 다른 객체의 움직임을 나타내는 경우에도 높은 성능을 유지하기 위해 비용함수를 정의하고 비용 값에 따라 적응적으로 어파인 에러은닉방법을 적용함으로써 보다 높은 성능을 가지게 한다. 실험결과 제안하는 알고리즘은 현재 H.264/AVC 참조소프트웨어에서 방법과 비교하여 최대 1.9 dB까지의 객관적 화질향상이 있는 것으로 나타난다.

Hydrogenated Lecithin 과 Co-emulsifier를 사용한 Nano-some의 제조 메커니즘과 Kojic Acid 및 Kojic Dipalmitate의 캡슐화 방법 (The Manufacturing Mechanism of Nano-some and Method of Capsulation of Kojic Acid and Kojic Dipalmitate with Hydrogenated Lecithin and Co-emulsifiers)

  • 김인영;제구환;이주동
    • 한국응용과학기술학회지
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    • 제17권4호
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    • pp.248-256
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    • 2000
  • We investigated the property of formation of mono-vesicle(designated nano-some) with using of the combined co-emulsifiers and phospholipid. Nano-some was prepared with hydrogenated lecithin(HL) and diethanolamine cetyl phosphate(DEA-CP) by swelling reaction. Kojic acid and kojic dipalmitate could be made stabilization by nano-some system using microfluidizer(MF). Nano-some has a good affinity to skin by means of this system. The composition was compounded by 2% of hydrogenated lecithin (phosphatidyl choline contained with 75%, 0.5% of DEA-CP and 0.5% of diglyceryl dioleate (DGDO). To make nano-some, several conditions of MF have to be considered as follows. The optimum pH was 6.0. The pressure was 10,000psi and passage temperature was at $306^{\circ}C$. The nano-some base was passed to homogenize continually 3 times through MF. The Particle size distributions of the vesicles were with in $57{\sim}75.7nm$(mean 66nm) by measuring the Zetasizer-3000. Zeta potential of vesicles with 3 times passage through MF was -24.8mV. Formations for nano-some vesicle certificated photograph by scanning electric magnification (SEM). Stability of nano-some was very good for 6months. The turbidity was very good transparency compared nano-some with liposome. It was formed the mono vesicle in the opposite direction to be formed the multi-lamellar vesicle of liposome.

면내 압축력 및 면외 바닥하중을 받는 플랫 플레이트 슬래브 (RC Flat Plate Subject to Combined In-Plane Compressive and Out-of-Plane Floor Loads)

  • 박홍근
    • 콘크리트학회지
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    • 제11권1호
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    • pp.231-242
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    • 1999
  • 면외 바닥하중과 토압과 수압에 의한 면내 압축력을 받는, 깊은 지하구조에 사용되는 플랫플레이트 슬래브에 대한 수치해석연구를 실시하였다. 비선형 유한요서해석을 위하여 재료와 기하학적 비선형효과를 고려한 수치해석프로그램을 개발하였으며, 이 수치해석방법은 4 변이 단순지지된 플레이트에 대한 실험결과와 비교에 의하여 검증되었다. 해석모델로서 국내 콘크리트계산규준의 직접설계법에 의하여 설계된 플랫플레이트 슬래브가 사용되었다. 하중조합과 하중순서에 대한 연구를 통하여 플랫플레이트 슬래브의 강도를 지배하는 하중조건을 연구하였으며, 이 지배하중을 받는 슬래브에 대한 변수연구를 통하여 철근비, 형상비, 콘크리트강도, 세장비에 따를 슬래브의 강도변화를 연구하였다. 이 연구결과를 바탕으로 바닥하중증대법을 제시하였다.

포스트 코아와 치근 계면에서의 미세누출에 관한 연구 (A STUDY OF THE MICROLEAKAGE AT THE POST AND CORE AND TOOTH INTERFACE)

  • 신지철;이선형;양재호;정헌영
    • 대한치과보철학회지
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    • 제36권2호
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    • pp.366-378
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    • 1998
  • Post and core is used to restore endodontically treated teeth, and it is a very important part which supplies retention and support to the prosthesis. But occasionally, caries occured due to the microleakage at the post and core and tooth interface, the failure of prosthesis has happened. In this study, the microleakage of cast gold post and core, amalgam core, and composite resin core was investigated and compared. The coronal part of the extracted upper anterior teeth were removed and endodontically treated with conventional method. The teeth were divided into three groups. In group 1, cast gold post and core was cemented with resin cement and in group 2, ready-made post was cemented with resin cement and amalgam core was built. In group 3, ready-made post was cemented with resin cement and composite resin core was built. All specimens were thermocycled between $5^{\circ}C\;and\;55^{\circ}C$ with dwell time of 15 seconds, and immersed in 0.5% aqueous solution of basic fuchsin dye for 24 hours. After embedded in the epoxy resin, the specimens were sectioned longitudinally and observed with stereomicroscope with the magnification of 25. From the findings of this study, the following conclusions were obtained. 1. There was microleakage at the core/tooth interface of all specimens. 2. The microleakage of gold post and core was significantly less than those of the other two groups. 3. There was no significant difference between the microleakage of amalgam core and that of composite resin core.

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