• Title/Summary/Keyword: life history approach

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Dynamic Stress Analysis of Vehicle Frame Using a Nonlinear Finite Element Method

  • Kim, Gyu-Ha;Cho, Kyu-Zong;Chyun, In-Bum;Park, Seob
    • Journal of Mechanical Science and Technology
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    • v.17 no.10
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    • pp.1450-1457
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    • 2003
  • Structural integrity of either a passenger car or a light truck is one of the basic requirements for a full vehicle engineering and development program. The results of the vehicle product performance are measured in terms of durability, noise/vibration/harshness (NVH), crashworthiness and passenger safety. The level of performance of a vehicle directly affects the marketability, profitability and, most importantly, the future of the automobile manufacturer. In this study, we used the Virtual Proving Ground (VPG) approach for obtaining the dynamic stress or strain history and distribution. The VPG uses a nonlinear, dynamic, finite element code (LS-DYNA) which expands the application boundary outside classic linear, static assumptions. The VPG approach also uses realistic boundary conditions of tire/road surface interactions. To verify the predicted dynamic stress and fatigue critical region, a single bump run test, road load simulation, and field test have been performed. The prediction results were compared with experimental results, and the feasibility of the integrated life prediction methodology was verified.

Application of first-order reliability method in seismic loss assessment of structures with Endurance Time analysis

  • Basim, Mohammad Ch.;Estekanchi, Homayoon E.;Mahsuli, Mojtaba
    • Earthquakes and Structures
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    • v.14 no.5
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    • pp.437-447
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    • 2018
  • Computational cost is one of the major obstacles for detailed risk analysis of structures. This paper puts forward a methodology for efficient probabilistic seismic loss assessment of structures using the Endurance Time (ET) analysis and the first-order reliability method (FORM). The ET analysis efficiently yields the structural responses for a continuous range of intensities through a single response-history analysis. Taking advantage of this property of ET, FORM is employed to estimate the annual rate of exceedance for the loss components. The proposed approach is an amalgamation of two analysis approaches, ET and FORM, that significantly lower the computational costs. This makes it possible to evaluate the seismic risk of complex systems. The probability distribution of losses due to the structural and non-structural damage as well as injuries and fatalities of a prototype structure are estimated using the proposed methodology. This methodology is an alternative to the prevalent risk analysis framework of the total probability theorem. Hence, the risk estimates of the proposed approach are compared with those from the total probability theorem as a benchmark. The results indicate a satisfactory agreement between the two methods while a significantly lower computational demand for the proposed approach.

Considering Issues of Vision in Panoptical Representation: Bentham, Bender, Fried, and Mayhew (파놉티콘적 재현에 나타난 시각성의 여러 측면들: 벤쌈, 벤더, 프리드, 메이휴)

  • Shin, Hi-Sup
    • The Journal of Art Theory & Practice
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    • no.7
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    • pp.189-240
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    • 2009
  • This essay aims to develop a critical approach of interpretation in examining the panoptical condition of representation that is said to permeate the tradition of modern realism in novels and paintings. In defining this approach, I am interested in the problem or inability of panoptical representation to tell a coherent story of solitude(solitary confinement, isolation, self-absorption, etc.) in a range of texts from prison documents to paintings and novels, and also what might occasion such an inability including social, material, or stylistic contradictions and conflicting epistemological angles. This task potentially anticipates a trajectory of readings and investigations that cuts through the history of panoptical representation, which is outside the scope of this essay. In this writing, I will engage in a series of debates with what I consider as major theories and views of panoptical representation offered by Jeremy Bentham, John Bender, and Michael Fried. Based on this, I will formulate a conceptual or methodological frame of discourse that would envisage an anti-panoptical approach of interpretation. As an attempt to validate this formulation, I will offer a reading of Henry Mayhew's Criminal Prisons of London and Scenes of Prison Life(1862), a case of panoptical representation that produces a peculiar sense of ambivalence while accounting for sites of penal solitude.

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Change in the treatment strategy for pediatric Crohn's disease

  • Kim, Mi-Jin;Choe, Yon-Ho
    • Clinical and Experimental Pediatrics
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    • v.53 no.9
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    • pp.830-833
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    • 2010
  • Crohn's disease is characterized by chronic inflammation involving any portion of the gastrointestinal tract. Treating Crohn's disease is a major challenge for clinicians, as no curative therapy currently exists. Pediatric Crohn's disease is characterized by frequent relapses, a wide extent of disease, a high prevalence of extraintestinal manifestations, and a severe clinical course. The classic therapeutic approach is known as the 'step-up' strategy, and follows a progressive course of treatment intensification as disease severity increases. Although this approach is usually effective for symptom control, many patients become either resistant to or dependent on corticosteroids. The efficacy of infliximab suggests that, rather than a progressive course of treatment, early intense induction may reduce complications associated with conventional treatment and improve quality of life. Intensive early therapy with infliximab is known as the 'top-down' strategy. Such therapy offers the potential for altering the natural history of Crohn's disease, and is changing treatment paradigms. However, the relatively new concept of an early aggressive or 'top-down' treatment approach is not yet widely accepted, especially in pediatric patients. The results of our current study demonstrate that early and intensive treatment of pediatric Crohn's disease patients with infliximab, at initial diagnosis, was more effective for maintaining remission and reducing flares.

Places of Memory in the Collective Memory of Locals in Janghang, Korea

  • Park, Jae-min;Kim, Moohan
    • Journal of recreation and landscape
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    • v.12 no.4
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    • pp.45-58
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    • 2018
  • Place memory is a new way of seeing as a new concept of cultural landscape research. Various research works and discussions have recently spread in landscape studies. In particular, the, which is visible and material, is a medium in which collective memory is embedded in place memory. The purpose of this study is to extract places of memory from the collective memory of residents of Janghang, Korea, and to visualize it through semantic relations. For this purpose, semi-standardized interviews (34 persons) were conducted with residents, and frequency analysis and semantic network analysis were used. As a result, the interviewees recalled only 127 places in Janghang that existed between 1920 and 2010. Locals remember the city based on places of memory. This means that the city could be illustrated according to specific places that are frequently mentioned. For instance, the top 25 places (top 20%) explain 65.6% of all the places in the city, and the top 39 places (top 30.8%) could describe 78.7% of the places. Some places are referred to more frequently when they are in the city's symbolic landscape, and the city's identity is projected on them. Some places were mentioned only infrequently but were nevertheless very important places by which to understand Janghang. These places of memory have not appeared in the documentary records before, which shows the value of the collective memory of the locals and the effectiveness of the interviewing method. In the clustering of the semantic network, six groups of places appeared. The local residents remembered the modern industrial city and recalled it in connection with the sites of daily life. This shows the possibility of looking not only at public memory and famous heritage as a macro history but also at daily life and meaningful places as a micro history about locals. This study has significance as an initial research that identified and visualized places of memory from the perspective of local residents. Such an approach could be useful in the study of everyday life and the conservation of modern heritage.

A Study on Spatial Characteristics of Cultural Streets in Urban Regeneration Aspects - Focused on a Case Analyses of Domestic Cultural Street - (도시 재생 관점에서 문화의 거리 공간특성 분석 - 국내 문화의 거리 사례분석을 중심으로 -)

  • Kim, Mi-Young;Moon, Jeong-Min
    • Korean Institute of Interior Design Journal
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    • v.19 no.6
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    • pp.161-168
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    • 2010
  • A city is a type of culture as living styles people have accumulated, In Particular, urban streets are integrated bodies of culture based on regional history and tradition which are easily accessible by people. However, due to insensible expansion policy of current cities, decline of old downtowns which have kept cultural characteristics of each region, hollowing out of the downtowns, expansion of new downtowns which have uniformed characteristics are weakening identities of each region. To overcome such problems, a culture-oriented approach as one of the urban regeneration strategies which have been appeared since 1980s is effective. Life style which has been formed by human activities can be considered as the culture of comprehensive concept and peculiar resources of each region are distinctive culture of each region. Cultural streets in which people can share each other's feeling may influence regional activation through cultural influence while preserving regional tradition and history. Therefore, this study aims to discover spatial characteristics of cultural streets through theoretical examinations on formation of streets in as aspect of urban regeneration and identify their characteristics by analyzed cases of domestic cultural streets.

Shanghanlun Diagnostic System : Exploring Value as Narrative Medicine by Analyzing Cases (사례분석을 통한 『상한론(傷寒論)』 변병진단체계(辨病診斷體系)의 서사의학적 가치의 탐색)

  • Kim, Jin-A;Lee, Sung-Jun
    • 대한상한금궤의학회지
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    • v.6 no.1
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    • pp.1-25
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    • 2014
  • Objective : The purpose of this study is exploring value of Shanghanlun six diagnostic system as Narrative Medicine by analyzing cases. Methods : In the article, we examined the theory of narrative medicine and current studies. And then key elements of narrative medicine was defined. On the basis of these, two medical cases were analyzed by reordering in accordance with time sequences and causality for confirming narrative factors. Results : The narrative approach to analyzing cases shows us that different diseases could be the result of same pathological patterns based on Shanghanlun. This tells us following four aspects. [1] Shanghanlun is the causes-oriented records and the text includes narrative factors. [2] Shanghanlun six diagnostic system is a process of constructing plot of medical case history through the clinical interpretation of contextual meaning of patient's life. [3] In the process of diagnosis, Schemata and script are engaged in assuming and confirming six patterns diseases. [4] The subjective factors of an individual can be applied universally through the provision of Shanghanlun. Conclusions : Narrative factors of Shanghanlun six diagnostic system suggest the possibility and value of Shanghan Medicine as Narrative Medicine in terms of Medical Humanities, essence of medical diagnosis and therapeutic action.

A Study on the Exhibit Environmental Design through the Transparency of the Cubism (큐비즘에서의 투명성 개념에 의한 전시환경디자인 연구)

  • 김호연
    • Korean Institute of Interior Design Journal
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    • v.13 no.5
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    • pp.154-161
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    • 2004
  • When people visit other countries, the first place to go would be either a museum or an art gallery because it might be the most effective way that people could understand culture and history of the place in a short time. It can be alleged that a museum must be an important cultural space because people can experience their life, history and art there. According to these cultural importance, the purpose of this study is to suggest the environmental design of $\boxDr$Design Museum$\boxUl$ through the Transparency of the Cubism. The Transparency means a capability of transmitting light so that objects on the other side can be seen clearly. The Concept of the Transparency could be taken effects in architecture by overlapping facets or space. By understanding formative properties of the Cubism, which especially focused on Transparency, 1 would like to propose the environment as an art and the exhibition-environment as a way of communication. As it were, the study can be valued as a new approach on condition that formative feature is interpreted with modern terms and the ‘Digital technology’ is not used a tool of representation but a tool of thought in terms of design. Moreover, it has a great significance that formative language of the Cubism will be able to be applied to the environmental design through the experimental and creative design process.

Currents in Mongolian Medicine (몽의학의 학파와 특징)

  • Hong, Sae-Young
    • The Journal of Korean Medical History
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    • v.27 no.1
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    • pp.33-40
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    • 2014
  • Traditional medicine in Asian countries show similarity according to geography, building up their own medical tradition upon indigenous cultural background. Mongolian medicine, in particular, displays district fusion of several medical systems accepted from neighboring countries adding to their traditional system. Those are Mongol Dhom medicine, acupuncture and moxibustion medicine, medicine of "Four Medical Tantras (四部醫典)", and combined system of Mongolian and biomedicine. Compared to East asian medicine, this is a different kind of diversity or hybridity resulting from idiosyncrasy of nomadic culture. Each current of Mongolian medical tradition has its own origin of historical backdrop. Mongol Dhom originated from ancient nomadic life, and medicine of "Four Medical Tantras (四部醫典)" was formed along with transmission of Tibetan Buddhism. Acupuncture and moxibustion is directly related to Chinese medical tradition, however, moxibustion is also referred to be regional origination. Lastly, biomedicine was transplanted during the modernization era, encouraging scientific approach toward Mongolian traditional medicine and producing combined medical practice. It is effective to derive each particular aspects of Mongolian medicine and analyze its specificity, in order to properly understand current Mongolian medical system. This paper aims at discovering socio-cultural meanings of each current and their nomadic feature beneath the diversity.

Changes in Quality of Life and Related Factors of Surgical Patients with Thyroid Cancer (갑상선암 수술환자의 삶의 질 변화와 관련요인)

  • Choi, Hyang-Suk;Kang, Young-Mi;Lee, Tae-Yong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.11
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    • pp.370-379
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    • 2018
  • This study was conducted 1) to investigate the effects of treatment and other factors on the quality of life of thyroid cancer surgical patients and 2) to provide fundamental data for development of an intervention and symptom management program to improve the quality of life of those patients. A total of 76 patients who were diagnosed with thyroid cancer and underwent thyroidectomy from July 2013 to December 2014 participated in this study. To investigate the factors affecting quality of life, a t-test and ANOVA analyses were conducted, after which multiple regression analysis was performed. The results were statistically significant between preoperative and one month after surgery of sex, cancer history, fatigue, and quality of life until 3 months after surgery of stage, cancer history, anxiety, and pain. Multiple regression analysis showed that the most influential factors affecting the quality of life were depression and fatigue at one month prior to and after surgery and anxiety at three months after surgery, while no factors were found to be influential at six months after surgery. Overall, the results of this study suggested that it is imperative to manage depression and fatigue one month prior to and after surgery to reduce the physical and psychological pain experienced by thyroid cancer patients. Moreover, three months after the surgery, anxiety should be closely monitored and controlled to improve the quality of life of the patients. This approach is expected to reduce the burden on the health care system and social costs, which will positively affect public health.