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Seismic assessment of mixed masonry-reinforced concrete buildings by non-linear static analyses

  • Cattari, S.;Lagomarsino, S.
    • Earthquakes and Structures
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    • v.4 no.3
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    • pp.241-264
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    • 2013
  • Since the beginning of the twentieth century, the progressive and rapid spread of reinforced concrete (RC) has led to the adoption of mixed masonry-RC solutions, such as the confined masonry. However, together with structures conceived with a definite role for earthquake behaviour, the spreading of RC technology has caused the birth of mixed solutions inspired more by functional aspects than by structural ones, such as: internal masonry walls replaced by RC frames, RC walls inserted to build staircases or raising made from RC frames. Usually, since these interventions rise from a spontaneous build-up, any capacity design or ductility concepts are neglected being designed only to bear vertical loads: thus, the vulnerability assessment of this class becomes crucial. To investigate the non-linear seismic response of these structures, suitable models and effective numerical tools are needed. Among the various modelling approaches proposed in the literature and codes, the authors focus their attention on the equivalent frame model. After a brief description of the adopted model and its numerical validation, the authors aim to point out some specific peculiarities of the seismic response of mixed masonry-RC structures and their repercussions on safety verification procedures (referring in particular way to the non-linear static ones). In particular, the results of non-linear static analyses performed parametrically to various configurations representative of different interventions are discussed.

The Expressive Effects of Queen Elizabeth I's Rebes in Cinema (영화의상에 나타날 엘리자베스 여왕 1세 로브의 표현효과)

  • 조윤영;양숙희
    • Journal of the Korean Society of Costume
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    • v.53 no.3
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    • pp.89-106
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    • 2003
  • The purpose of this study is to analyze the expressive effects of Queen Elizabeth I's robes in cinema and also to present two examples of Queen Elizabeth I's robes designed and made based on these expressive effects. To this end, this study wilt first examine Queen Elizabeth I's robes in her portraits according to the visual definers and emblematic meanings. Then on the basis of these knowledges, analyze visual definers and viewing priorities of Queen Elizabeth I's robes in five movies. Thereinafter, these robes will be classified based upon Belong(1998)'s four expressive effects. excitement. calmness, strength and delicacy. Finally, this study will demonstrate calmness and delicacy among four expressive effects through two robes made for the purpose. After analyzing the expressive effects of robes in five Queen Elizabeth I's movies, one can conclude excitement. calmness, strength, and delicacy can be found according to the flow of the story. Since this analysis focuses mainly on one particular person during one Particular period of time, there was a fundamental silhouette prevalent among the Queen's robes which then can be classified into different forms. Moreover, Queen's character in itself embodies authority and grace which. in turn, facilitates the presentation of the four expressive effects along the story line. In conclusion, thorough historical research on the character and the period. in addition to analysis of the visual definer and viewing priorities, is imperative when designing a historical costume.

A Study of Bearing Oil Whip Treatment in 300MW Steam Turbine with Oil Temperature Change (300MW급 증기터빈의 베어링 윤활유 온도조정에 의한 오일휩 제거방법에 관한 연구)

  • Hwang, Dal-Y.;Kim, Hwa-Y.;Moon, Seung-J.;Lee, Jae-H.
    • 한국전산유체공학회:학술대회논문집
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    • 2008.03b
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    • pp.244-247
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    • 2008
  • The phenomena of oil whip in steam turbine takes place for the un-balancing force between rotor shaft and bearing oil film. The several parameters that affect onset of oil whip have been well known. However, the major parameter of oil whip is shaft mis-alinement. A oil whip causes the high vibration and the shutdown of rotor system. We mostly stop the steam turbine to adjust a shaft re-alinement concerning oil whip. In this case, It needs many costs for maintenance and long shutdown times. In this study, we study and observe the oil whip of the 300MW steam turbine in many years and we conduct the field test for another steam turbine for reducing vibration from oil whip. The results of this study are that a oil whip takes place with a particular rotating speed or a particular turbine output and the oil temperature change is a very effective method for on-line oil whip treatment.

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Isolated Weakness of Radial-side Fingers Due to a Small Cortical Infarction (국소 뇌경색에 의한 요골측 손가락 마비)

  • Hwang, Kyoung Jin;Park, Key-Chung;Chang, Dae-Il;Yoon, Sung Sang
    • Investigative Magnetic Resonance Imaging
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    • v.18 no.4
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    • pp.362-365
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    • 2014
  • Predominant involvement of a particular group of fingers due to a central nervous system lesion has been described as pseudoperipheral palsy. Two patients visited our hospital with isolated weakness of a particular group of fingers due to small cortical infarctions. A 51-year-old woman suddenly developed weakness in her left index and middle fingers. The brain MRI showed a small infarct in the right frontal cortex. A 67-year-old man was sudden difficulty using his chopsticks and had weakness in his right thumb and index finger. The brain MRI showed a small infarct in the left precentral cortex.

Special Effect Generator for Various Digital Contents (다양한 디지털 콘텐츠를 위한 특수효과 생성기)

  • Song Seung-Heon;Kim Eung-Kon
    • Proceedings of the Korea Contents Association Conference
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    • 2005.11a
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    • pp.572-575
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    • 2005
  • In digital contents industry there is a high demand to convincingly mimic the appearance and behavior of natural phenomena such as smoke, waterfall, rain, and fire. Particle systems are methods adequate for modeling fuzzy objects of natural phenomena. It is clear which parameter of which action in a particular effect should be modified for a particular visual result. The generator is usable for offline animation and for real-time special effects in digital contents and virtual reality. The application programmer is able to specify different accuracy needs for different effects. This paper design special effect generator for make low-price and high-quality digital contents in reflection industry and virtual reality applications.

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The Sphere of Applicability of the CISG (국제물품매매계약(國際物品賣買契約)에 관한 유엔협약(協約)'의 적용범위(適用範圍))

  • Han, Kyu-Sik
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.13
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    • pp.193-213
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    • 2000
  • The CISG has been legislated for playing roles as uniform rules which govern international sale of goods. The job of getting unification of the diverse domestic legal systems required almost half century of work. In the process of making the Convention some rules resulted from compromises of nation's relevant interests. The Convention, however, promoted both the legal certainty and harmonization in international trade in that the uniform rules suggest the appropriate resolution to the legal problems in the course of concluding a contract as well as in remedies for breach of contract. This paper focuses systematically on the scope of applicability of the CISG. The Convention deals with contracts for the international sale of goods. However, it does not apply to all kinds of the international sale of goods. The CISG confines the sphere of applicability to a certain type of sales. First of all, the CISG is limited to those contracts having been concluded between a particular group of persons, which is called a personal aspect of applicability. Secondly, the CISG covers a specific category of sales, which is called a material aspect of applicability. Thirdly, the CISG are concluded within a particular period of time, which is called a temporal aspect of applicability. Lastly, the CISG is limited to contracts falling within a given territorial sphere, which is called a territorial aspect of applicability.

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Object oriented simulation in a CIM environment

  • 김종수
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1991.10a
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    • pp.67-76
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    • 1991
  • For several years, graduate students and faculty of the Engineering Systems Research Center at U.C., Berkeley have been studying new methods of planning and scheduling in a computer integrated manufacturing environment, with particular emphasis on large scale integrated circuit fabrication. One part of this work, focusing on short interval scheduling, uses simulation models as a primary research tool. We have built two versions of the same basic model (programmed in C) to study two different problems (one deals with machine down time and the other with setup times). These have proven to be efficient for studying particular problems, but are difficult and time consuming to modify. We are convinced that our research will be more effective: (1) if it were easier to build special purpose models tailored to the research question at hand; and (2) if we had better interfaces to graphics output. Commercially available factory simulators are inadequate for this research for a variety of reasons. Existing packages such as SIMKIT, SLAM, SIMAN and EXCELL have their own weaknesses. Typically, they are hard to develop and to modify. They do not allow for adding new dispatching decisions or release decision. Also, it is hard to add more machines to existing environment or change the route the product flows. For these various reasons, we had developed a new simulation package having flexibility and modularity. In this paper, based on experiences gained in the application of object oriented programming, we discuss unique features of the simulator developed in OOPS and ways to take advantage of features in developing and using manufacturing simulation software written in the OOPS

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An Empirical Evaluation of Continuous Transaction Intents Using Categorial Regression in the Banking Industry (은행서비스 산업에서 범주형 회귀분석을 이용한 지속적 거래의도 평가)

  • Ha, Hong-Youl
    • Journal of the Korean Operations Research and Management Science Society
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    • v.37 no.3
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    • pp.1-12
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    • 2012
  • The research mainstream has focused on improving the competitiveness throughout the reinforcement of customer satisfaction and loyalty in the banking industry, but there is still a lack of research that reflects characteristics of banking services. From a customer point of view, this study considers a variety of bank characteristics such as levels of interest rate, numbers of transaction banks, monthly average balance, and age. In line with this observation, the main objective of the current research is to investigate the relationship between bank characteristics and ongoing transaction intentions with a particular bank using a categorial regression analysis and in turn, provide insights for managers. First, the findings show that deposit interest rate is insignificant for leading customers to ongoing transaction intentions, but loan interest rate is significant when customers are satisfied with a loan interest rate. Second, if customers only transact their banking services with a particular bank, they are more likely to deal with the bank, rather than customers who transact additional one or two banks. Third, in the case of monthly average balance, customers who have more than \100 million wons per month are likely to switch other competitors. Finally, old customers are more stable than young customers when they consider to switch the relationship with a bank. The author provides insights for bank managers and discusses research limitations and further directions of the study.

A Study on Storytelling Plan of Stereo-scopic 3D Animation the Motif for the Tourist Attractions in Local Government : Focused on cases of the Creation of Cheongdo-gun, Gyeongbuk and Nam-gu, Ulsan (지자체 관광자원을 모티브로 한 3D입체애니메이션의 스토리텔링 기획에 관한 연구: 울산 남구와 경북 청도의 제작사례를 중심으로)

  • Kong, Jiheun;Kim, Cheeyong
    • Journal of Korea Multimedia Society
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    • v.18 no.2
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    • pp.260-267
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    • 2015
  • The Ministry of Culture, Sports and Tourism has been implementing the 'Local Government 3D Contents Production Support Project' since 2010 to foster the 3D contents industry and secure high-quality 3D contents of local governments. This is part of national support for securing 3D media contents of local governments. In particular, stereo-scopic 3D animation is in the spotlight as media contents appropriate for simultaneous implementation of pleasure of narrative and high-level of presence to promote tourism resources of local governments. But existing stereo-scopic 3D animation-related studies are mostly concentrated in three dimensional effect expression for particular scenes or theater. Therefore, this study extracted elements required for storytelling planning by analyzing production cases of stereo-scopic 3D animation using tourism resources of local governments which have been recognized for a high quality of work.

Long-Term Simulation of Reservoir Sedimentation Considering Particle-Size Distributions of Suspended Sediment and Bed Materials (부유사 및 하상토 입도분포를 고려한 저수지 퇴사의 장기모의)

  • Kim, Dae Geun;Shin, Kwang Gyun
    • Journal of Korea Water Resources Association
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    • v.46 no.1
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    • pp.87-97
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    • 2013
  • The bed change model of HEC-RAS was used to predict the formation of a delta upon an influx of high-density sediment while taking the particle-size distributions of the suspended sediment and bed materials into account. The model was able to reasonably predict both the spatial-temporal distribution of the delta and the amount of deposited sediment according to the grain size. In addition, it was able to estimate the main type of grains that sediment at particular locations at particular times moderately well. It is expected that the simulation and the analysis considering these particle-size distributions of sediment will provide important information on planning and maintenance of the water resource related facilities.