• 제목/요약/키워드: Stress view

검색결과 538건 처리시간 0.028초

제임스 코너의 재현 이론과 실천 - 조경 드로잉의 특성과 역할 - (James Corner's Theory and Practice of Representation - Characteristics and Functions of Landscape Architectural Drawing -)

  • 이명준
    • 한국조경학회지
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    • 제45권4호
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    • pp.118-130
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    • 2017
  • 조경 설계 과정에는 설계안을 시각화하는 다양한 종류의 드로잉이 제작된다. 이 연구는 조경 드로잉의 특성과 역할을 부단히 탐구해 온 제임스 코너의 재현 이론과 실천의 전개 과정을 면밀히 검토한 논문이다. 코너는 1990년대 초반부터 발표된 이론적 저술에서 드로잉이라는 시각 이미지는 경관의 다감각적 특성을 온전하게 담아내기 힘들고, 따라서 조경 드로잉은 경관의 외양을 사실적으로 그려내는 방식, 즉 도구적 기능보다는 경관의 다감각적 특성을 대안적으로 보여주고, 설계 과정에서 아이디어를 생성하는 상상적 역할을 담당해야 한다고 하면서 새로운 시각화 테크닉의 실험을 주장했다. 코너의 재현 이론은 1990년대 중후반 설계 실천에 적용되면서 실천적 이론으로 진화했다. 코너는 생태학을 수용하고, 랜드스케이프 어바니즘이라는 실무 작업을 전개해가면서 드로잉의 도구적 역할에 다시 주목했다. 이전에 코너가 콜라주와 몽타주를 이용하여 상상적 역할을 수행하는 퍼스펙티브 뷰를 지지하는 경향이 있었다면, 1990년대 후반의 이론과 실무 작업에서는 도구적 기능을 수행하는 맵을 기반으로 하되, 이를 상상적으로 변형하는 맵핑 테크닉을 강조했다. 이와 같이 코너의 저작은 조경 분야의 본질을 파악하여 드로잉의 특성과 역할을 체계적으로 이론화했고, 나아가 이론과 실천의 상호작용을 보여주고 있다는 점에서 현대 조경 설계에도 여전히 귀감이 되고 있다.

Correlation between Patterns of Mdm2 SNIP 309 and Histopathological Severity of Helicobacter pylori Associated Gastritis in Thailand

  • Tongtawee, Taweesak;Dechsukhum, Chavaboon;Talabnin, Krajang;Leeanansaksiri, Wilairat;Kaewpitoon, Soraya;Kaewpitoon, Natthawut;Loyd, Ryan A;Matrakool, Likit;Panpimanmas, Sukij
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권17호
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    • pp.7781-7784
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    • 2015
  • Background: The commonly held view of the tumor suppressor p53 is as a regulator of cell proliferation, apoptosis and many other biological processes as well as external and internal stress responses. Mdm2 SNIP309 is a negative regulator of p 53. Therefore, this study aimed to determine the correlation between the patterns of Mdm2 SNIP 309 and the inflammation grading of Helicobacter pylori associated gastritis in a Thai population. Materials and Methods: A cross-sectional study was carried out from November 2014 through June 2015. Biopsy specimens were obtained from infected patients and infection was proved by positive histology. The gastric mucosa specimens were sent to the Molecular Genetic Unit, Institute of Medicine, Suranaree University of Technology where they were tested by molecular methods to detect the patterns of Mdm2 SNIP 309 using the real-time PCR hybridization probe method. The results were analyzed and compared with the Updated Sydney classification. Results: A total of 100 infected patients were interviewed and gastric mucosa specimens were collected. In this study the percentage of Mdm2 SNIP 309 T/T homozygous and Mdm2 SNIP309 G/T heterozygous was 78% and 19 % respectively whereas Mdm2 SNIP309 G/G homozygous was 3%. Mdm2 SNIP 309 T/T homozygous and Mdm2 SNIP309 G/T heterozygous correlated with mild to moderate inflammation (P<0.01) whereas Mdm2 SNIP309 G/G homozygous correlated with severe inflammation (P<0.01). Conclusions: Our study found the frequency of Mdm2 SNP309 G/G in our Thai population to be very low, and suggests that this can explain to some extent the low incidence of severe inflammation and gastric cancer changes in the Thai population. Mild to moderate inflammation are the most common pathologic gradings due to the unique genetic polymorphism of Mdm2 SNIP 309 in the Thai population.

한국의 민주화와 미디어 : 정부와 시장 주류 미디어의 관계 (The relationship between the major market-based media and the government in Korea)

  • 조항제
    • 한국언론정보학보
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    • 제16권
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    • pp.168-206
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    • 2001
  • This study attempts to examine the relationships between the major market-based media and the government after closing military regime era, 1961-1987. After the military regime was collapsed, while the mass media in Korea obtained independence and autonomy from government, they have been confronted with the terrible competition not so much comparatively as before. The watchdog role in the traditional liberalism, which is regarded as normative relationship between the media and the government would be transformed in accordance with the market condition and the maturity of democracy. Thus, the watchdog metaphor has been variously deviated in rower-centered society; lap dog, guard dog, attack dog. liberalists argue that the primary democratic role of the media is to art as a public watchdog overseeing the state. Social democrats, however, criticize them as simplistic conception which could be only applied to the government. They argue that the media should be seen as a source of redress against the abuse of all forms of power over others; the home, the economy, and the civil society. The lap dog view is that the media is overwhelmingly dependent on the established power structure contrary to the watchdog. While the guard dog perspective is a means to preserve the power structure alarming with playing 'conflict role', the attack do8 aims to the private interest of the media in intruding into the politics. The attack dog perspective by T. Patterson could be composed of the interpretive style of report, the game schema report over the policy schema in the election, and the negativism against politics and government. The market-dominant press has been likely to transform from lap-guard dog into attack-guard dog. In Roh Tae Woo government(1988-1992), while the press was a lessened lap-guard dog before three parties merger in 1990, after merger the press had been transformed as the reinforced lap-guard dog because this merger entailed joint, party-to-party negotiations, and the formation of the new party preceded by dissolution of the ruling blot. In the early stage of Kim Young Sam government(1993-1997), the press has kept in pace with the reform movement drive-forced by the government. However, the press withdrew the support of Kim's reform in reaching the level of threat to ruling bloc. The press coalesced only circumstantially with government and was interested in preserving some margin of independence. The failure of Kim's reform proved the political muscle of the press in post-autho-ritarianism. In the middle stage of Kim Dae Jung government (1998-) that resulted in the shift of power structure as once-opposition party leader, the stress has been a manifested attack-guard dog owing to the anti-cold war policy, the realignment policy of power, and the minority-base of Kim's government. The press has endeavored to hold political communication within limits relatively less threatening to the established order.

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후방불안정성을 동반한 요추 추간판 탈출증에서 Graf 고정술후 발생한 합병증 분석 (The Complications of the Graf Stabilization for Lumbar Disc Herniation with Posterior Instability)

  • 박주태;신영식;양정호;민강우
    • Journal of Yeungnam Medical Science
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    • 제15권1호
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    • pp.164-172
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    • 1998
  • 본 포항성모병원 정형외과에서는 1991년 5월부터 1995년 12월까지 척추불안정성과 관련된 요추부질환 중 연성고정술을 시행한 145례 중 문제점이 발생된 22례를 분석하여 다음과 같은 결론을 얻었다. 1. 총 145례 중 22례(15.1%)에서 연성고정술로 유발되는 문제점을 발견하였다. 2. 문제점으로 주위분절의 불안정성 증가 10례, 추간판 간격의 감소 8례, 척추경 나사못의 해리 3례, Graf band의 파열이 1례였다. 3. 추간판 간격의 감소 8례 중 초기 질환의 원 인으로 추간판이 파열된 경우가 6례로 의의있는 소견을 보였다. 이상과 같은 문제점이 관찰되었으나 주위분절의 불안정성 증가 및 척추경 나사못의 해리는 견고한 고정술에 비해 그 빈도가 낮은 것으로 보이며, 추간판 간격의 감소의 경우 역시 단순 수핵 제거술후 발생된 추간판 간격의 감소 보다 빈도가 적었으나, 보다 장기간의 추시 및 계속적인 관찰과 연구가 필요할 것으로 사료된다.

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가뭄 분석을 위한 지하수위 모니터링 및 예측기법 개발(II) - 표준강수지수, 표준지하수지수 및 인공신경망을 이용한 지하수 가뭄 예측 (Development of groundwater level monitoring and forecasting technique for drought analysis (II) - Groundwater drought forecasting Using SPI, SGI and ANN)

  • 이정주;강신욱;김태호;전근일
    • 한국수자원학회논문집
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    • 제51권11호
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    • pp.1021-1029
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    • 2018
  • 본 연구에서는 미급수지역의 주요 수원인 지하수의 수위 변동 상황을 기반으로 한 미급수지역 가뭄 예보 기법 개발을 목적으로 하였다. 이를 위해 지역화된 표준지하수지수(SGI)와 표준강수지수들(SPIs)의 상관관계를 분석하였다. 관측 지하수위로부터 산정된 SGI의 자기회귀 특성 및 지속기간별 SPI와 SGI의 상관관계를 동시에 고려할 수 있는 NARX (nonlinear autoregressive exogenous model) 인공신경망 모형을 이용하여 지역별 예측모형을 구축하였다. 학습기간 동안 관측 SGI와 모델 출력 SGI의 상관계수는 0.7 이상인 곳이 전체 167개 지역별 모형 중 146개(87%)로 상관성이 높은 것으로 분석되었다. 적용기간에 대해서는 평균제곱근오차와 상관계수로 모형을 평가하였다. 본 연구를 통해 기상청에서 제공하는 59개 관측소별 강수량 전망 값으로부터 산정된 지속기간별 SPI와 관측된 지하수위를 이용한 지역별 SGI 전망이 가능하도록 하였으며, 미급수지역의 가뭄 예 경보를 위한 기초자료로 활용이 가능토록 하였다.

Microstructural Characteristics of III-Nitride Layers Grown on Si(110) Substrate by Molecular Beam Epitaxy

  • Kim, Young Heon;Ahn, Sang Jung;Noh, Young-Kyun;Oh, Jae-Eung
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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    • pp.327.1-327.1
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    • 2014
  • Nitrides-on-silicon structures are considered to be an excellent candidate for unique design architectures and creating devices for high-power applications. Therefore, a lot of effort has been concentrating on growing high-quality III-nitrides on Si substrates, mostly Si(111) and Si(001) substrates. However, there are several fundamental problems in the growth of nitride compound semiconductors on silicon. First, the large difference in lattice constants and thermal expansion coefficients will lead to misfit dislocation and stress in the epitaxial films. Second, the growth of polar compounds on a non-polar substrate can lead to antiphase domains or other defective structures. Even though the lattice mismatches are reached to 16.9 % to GaN and 19 % to AlN and a number of dislocations are originated, Si(111) has been selected as the substrate for the epitaxial growth of nitrides because it is always favored due to its three-fold symmetry at the surface, which gives a good rotational matching for the six-fold symmetry of the wurtzite structure of nitrides. Also, Si(001) has been used for the growth of nitrides due to a possible integration of nitride devices with silicon technology despite a four-fold symmetry and a surface reconstruction. Moreover, Si(110), one of surface orientations used in the silicon technology, begins to attract attention as a substrate for the epitaxial growth of nitrides due to an interesting interface structure. In this system, the close lattice match along the [-1100]AlN/[001]Si direction promotes the faster growth along a particular crystal orientation. However, there are insufficient until now on the studies for the growth of nitride compound semiconductors on Si(110) substrate from a microstructural point of view. In this work, the microstructural properties of nitride thin layers grown on Si(110) have been characterized using various TEM techniques. The main purpose of this study was to understand the atomic structure and the strain behavior of III-nitrides grown on Si(110) substrate by molecular beam epitaxy (MBE). Insight gained at the microscopic level regarding how thin layer grows at the interface is essential for the growth of high quality thin films for various applications.

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산업부산물을 사용한 지오폴리머 콘크리트의 역학적 특성에 관한 연구 (Study on Mechanical Properties of Geopolymer Concrete using Industrial By-Products)

  • 김시환;고경택;이장화;류금성
    • 한국건설순환자원학회논문집
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    • 제2권1호
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    • pp.52-59
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    • 2014
  • 이 연구에서는 플라이애쉬와 고로슬래그를 혼합한 지오폴리머 콘크리트의 역학성능을 평가하기 위하여 압축강도, 탄성계수 및 쪼갬인장강도에 대해 검토하였다. 또한 다양한 변수에 대한 비교분석을 하기 위해 분체량, 알칼리 활성화제 첨가율 및 실리카퓸 혼입률에 대해서도 동일한 시험을 수행하였으며, 국내 외의 규준식과 비교하였다. 그 결과, 알칼리 활성화제의 첨가율은 18%가 적정하고 실리카퓸 치환율은 5%가 유리한 것으로 나타났다. 지오폴리머 콘크리트의 탄성계수는 변수 및 재령별로 압축강도가 증진됨에 따라 탄성계수가 소폭 상승되는 것으로 나타났으며, 국내 외 규준식에 의한 예측값보다 작은 것으로 나타났다. 또한 응력-변형률 선도를 분석한 결과, 지오폴리머 콘크리트가 일반 OPC 콘크리트 보다 연성적인 거동을 하는 것으로 분석되었다. 쪼갬인장강도는 분체량 $400kg/m^3$와 알칼리 활성화제 첨가율 18%에서 높은 강도를 보였으며, 압축강도에 대한 쪼갬인장강도의 비가 8.7~10.2% 수준인 것으로 분석되었다.

현대(現代) 패션에 나타난 고저스(Gorgeous) 이미지에 관(關)한 연구(硏究) - 중세(中世) 비잔틴 시대(時代)의 이미지를 중심(中心)으로 - (A Study of Gorgeous Images in Modern Fashion - Focus on Byzantine Empire in the Middle Ages -)

  • 정윤희
    • 패션비즈니스
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    • 제6권5호
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    • pp.48-58
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    • 2002
  • The purpose of this study is to analyze four separate elements-sublime beauty, elegant beauty, mysticism, ornament-which appeared in materials, patterns, colors, silhouettes, details, and accessories, laying stress on luxurious, brilliant, mysterious feelings on Gorgeous Images appeared as trend theme of modern fashion by mixing religious mysticism of the Byzantine Empire. Mysticism element is using the effect of splendid and gorgeous colors from the Orient rather than forms. And a philosophy of abundant colors in mosaics, which are seen in art forms such as architecture, paintings, etc., shows that it creates some visual rooms for religious spirits. Influenced by the fashion of the Greco-Roman style, the elegant beauty element is expressing abundant comfort and elegant feminine lines that are from creases, and it is also emphasizing natural beauty which seems to slip down by displaying the splendid images of Gorgeous as drapes that fit a body. Ornament element was reflecting an inspiration from the splendid and brilliant culture of religion in the Byzantine Age. Therefore, it was appeared as a style filling the whole with bulky silks, splendid ornamental materials embroidered in gold or silver thread, the complicated geometric patterns that are two-dimensional and dignified, and so on. It was decorated with crosses which represent Christianity as a motif, and also it emphasized the splendor of the Byzantine and dazzling splendid images of Gorgeous by using accessaries decorated with various jewels. The elements of sublime beauty are showing the beauty adding humble and majestic images to it as designs sought by spiritual values or intrinsic values. Those designs, so to speak, have pretense which does not allow to expose a body and plain pure feeling, so that they are showing some abstinent styles in a solemn atmosphere, with most details removed. We can say the Fashion Theme appearing in Modern Times is the result from representing by combining various factors of the times with formative beauty through creative works for aesthetic expression. The moderners are requiring new designs which is possible to meet their individualities, in addition to their outstanding fashion senses. From this point of view, a variety of textiles, patterns, and colors in the Byzantine have a great meaning to fulfill people's various desires as interesting elements.

Biofilm Differentiation and Dispersal

  • Kjelleberg, Staffan;Barraud, Nicolas;Egan, Suhelen;Ho, Wing Ka;Huynh, Trieu Tran;Klebensberger, Janosch;Koh, Kai Shyang;Lucas-Elio, Patricia;Mai-Prochnow, Anne;Marshall, Dustin J.;Matz, Carsten;McDougald, Diane;Rice, Scott A.;Sanchez-Amat, Antonio;Schleheck, David;Shahbazi, Jeyran;Steinberg, Peter D.;Tan, Chuan Hao;Thomas, Torsten;Webb, Jermy S.;Woo, Jerry K.K.
    • 한국미생물학회:학술대회논문집
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    • 한국미생물학회 2008년도 International Meeting of the Microbiological Society of Korea
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    • pp.42-44
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    • 2008
  • Bacterial biofilms are analogous to multi-cellular organisms or to clonal communities of higher organisms. In this respect, it can be demonstrated that biofilms display the type of genetic variation associated with macroorganisms. The formation of genetic variants from biofilms is the result of internally produced and regulated signals and the appearance of these variants coincides with dispersal from the biofilm. Moreover, the generation of such variation, has similar outcomes for the bacterial community, where diversification of phenotypic traits ensures that the bacterial community optimizes its chances of success when dispersing or surviving when challenged with environmental stress. These observations increase the complexity with which we view bacteria and also suggest that microbial systems can serve as models for the testing of eukaryotic ecological theories.

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CERAMIC INLAY RESTORATIONS OF POSTERIOR TEETH

  • Jin, Myung-Uk;Park, Jeong-Won;Kim, Sung-Kyo
    • 대한치과보존학회:학술대회논문집
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    • 대한치과보존학회 2001년도 춘계학술대회
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    • pp.235-237
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    • 2001
  • ;Dentistry has benefited from tremendous advances in technology with the introduction of new techniques and materials, and patients are aware that esthetic approaches in dentistry can change one's appearance. Increasingly. tooth-colored restorative materials have been used for restoration of posterior teeth. Tooth-colored restoration for posterior teeth can be divided into three categories: 1) the direct techniques that can be made in a single appointment and are an intraoral procedure utilizing composites: 2) the semidirect techniques that require both an intraoral and an extraoral procedure and are luted chairside utilizing composites: and 3) the indirect techniques that require several appointments and the expertise of a dental technician working with either composites or ceramics. But, resin restoration has inherent drawbacks of microleakage. polymerization shrinkage, thermal cycling problems. and wear in stress-bearing areas. On the other hand, Ceramic restorations have many advantages over resin restorations. Ceramic inlays are reported to have less leakage than resin restoration and to fit better. although marginal fidelity depends on technique and is laboratory dependent. Adhesion of luting resin is more reliable and durable to etched ceramic material than to treated resin composite. In view of color matching, periodontal health. resistance to abrasion, ceramic restoration is superior to resin restorationl. Materials which have been used for the fabrication of ceramic restorations are various. Conventional powder slurry ceramics are also available. Castable ceramics are produced by centrifugal casting of heat-treated glass ceramics. and machinable ceramics are feldspathic porcelains or cast glass ceramics which are milled using a CAD/CAM apparatus to produce inlays (for example, Cered. They may also be copy milled using the Celay apparatus. Pressable ceramics are produced from feldspathic porcelain which is supplied in ingot form and heated and moulded under pressure to produce a restoration. Infiltrated ceramics are another class of material which are available for use as ceramic inlays. An example is $In-Ceram^{\circledR}$(Vident. California, USA) which consists of a porous aluminum oxide or spinell core infiltrated with glass and subsequently veneered with feldspathic porcelain. In the 1980s. the development of compatible refractory materials made fabrication easier. and the development of adhesive resin cements greatly improved clinical success rates. This case report presents esthetic ceramic inlays for posterior teeth.teeth.

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