• Title, Summary, Keyword: Interdisciplinary Research

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The Effect of Pulsatile Flow on Ultrafiltration In-Vitro Study and Comparison with Roller Pump

  • Lee K.;Jeong J. H.;Mun C. H.;Lee J. C.;Min B. G.
    • Journal of Biomedical Engineering Research
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    • v.26 no.5
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    • pp.337-341
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    • 2005
  • Blood pulsation has been reported to have an advantageous effect on extracorporeal blood circulation. However, the study of pulsatile blood flow in renal replacement therapy is very limited. The in-vitro experimental results of pulsatile blood flow on ultrafiltration, when compared with the conventional roller pump, are described in this paper. Methods: Blood flow rate (QB) and transmembrane pressure (TMP) were considered as regulating factors that have an influence on ultrafiltration. Experiments were performed under the condition of equal TMP and OB in both pulsatile and roller pump groups, Several kinds of hollow fiber dialyzers were tested using distilled water containing chemicals as a blood substitute. Mean TMP (mTMP) varied from 10 to 90mmHg while the QB was 200ml/min. Results: Ultrafiltration rate (QUF) was found to be linearly proportional to TMP, whereas QB had little influence on QUF. In addition, QUF was higher in the pulsatile group than the roller pump group at the identical TMP. Conclusion: In the controlled test, QUF increased solely as a consequence of blood pulsation, which implies that the pulse frequency represents an additional and important clinical variable during renal replacement therapy.

implementation and its limitations

  • Nahm, Kie-B.;Shin, Eun-S.;Ryoo, Seok-M.
    • Journal of the Optical Society of Korea
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    • v.1 no.2
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    • pp.90-93
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    • 1997
  • The shallow depth of focus in conventional light microscopy hinders the observation of the whole image when the object is thicker than the depth of field. Most of the existing techniques measured the object distance, which is not necessarily the actual distance of each pixel in the image. We implemented a means of determining the "best focus" of each pixel and located the height of object points by sectioning at different sample heights. Combining the height information and its gray values together, we obtained an image where the blur from the finite depth of focus is eliminated. Limitations of the technique are discussed together with composed images.ed images.

Exploring Topic Defining Patterns of Students in Interdisciplinary Capstone Design Class (캡스톤 디자인 수업에서 학생들의 주제 결정 패턴 탐색)

  • Byun, Moon Kyoung
    • Journal of Engineering Education Research
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    • v.21 no.1
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    • pp.14-26
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    • 2018
  • The goal of this study was to explore topic defining patterns of students in interdisciplinary Capstone Design Class. Thematic analysis methodology was used to examine 85 Korean college students' lived experience of project topic generation which is for interdisciplinary capstone design class and Individual open-ended survey for constituted the data sources. Findings show four contexts of student's topic defining patterns using thematic analysis including (a) one leader's directed problem representation, (b) team common decision making after brainstorming, (c) empathy with professor proposed issue, (d) problems offered to students by corporate or research competitions. Based on research result, I could suggest instructional strategies of Capstone Design Class of teacher for helping their students' topic defining. It was necessary to minimize the opinions of the instructors at the beginning of class and minimize the number of team members. And also it provided a lot of opportunities to collaborate with companies in the topic selection process, it will help to develop the students' ability to determine the valuable topic in project.

Examining ways to support engineering students for choosing a project topic in interdisciplinary collaboration (공대 학생들의 프로젝트 주제 선정을 위한 초기 교수학습 지원 방안 탐구)

  • Byun, Moon-Kyoung;Cho, Moon-Heum
    • Journal of Engineering Education Research
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    • v.19 no.1
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    • pp.37-46
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    • 2016
  • The purposes of the study were to examine engineering students' concerns and problems while they were choosing a project topic in interdisciplinary collaboration and to suggest ways to support them in an early stage of collaboration phase. To answer the research questions, we conducted a case study with engineering participants in GCTI 2015, an interdisciplinary collaborative and creative group project. Multiple data sources including focus group interviews, online survey and researchers' observation notes were used to triangulate research findings. We found four main concerns of engineering students. These concerns include (1) lack of self-efficacy, (2) limited resources, (3) lack of shared, meaningful, and common goals, and (4) lack of content knowledge. Based on these concerns we proposed four supports in an early stage of the collaborative project. These supports includes (1) implementing an orientation program, (2) providing opportunities for social interactions, (3) providing expert feedback, and (4) providing consultation for team building.

Satisfaction Analysis about Courses and Management of a Culture Content Interdisciplinary Program in a University (대학에서 문화콘텐츠 연계전공 강의와 관리에 대한 만족도 분석)

  • Lee, Hyun-Ju;Kim, Han-Il;Park, Chan-Jung
    • The Journal of the Korea Contents Association
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    • v.8 no.11
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    • pp.426-437
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    • 2008
  • As culture content industry is regarded as a high value-added creation industry, many universities have run various kinds of programs such as interdisciplinary programs to develop human resources recently. J University has also offered a culture content interdisciplinary program since 2006. 6 departments are engaged in the interdisciplinary program. However, the research related to the assessment of courses and management about interdisciplinary programs rarely exists. In this paper, we firstly analyze the satisfaction levels of the classes and the management of the culture content interdisciplinary program runs in our University. In addition, in order to propose a desirable method to run the interdisciplinary program, we analyze the comprehension levels of students and the effectiveness of the education. Finally, we propose a future direction for a successful program based on our analysis results.

Adzuki bean (Vigna angularis) extract reduces amyloid-β aggregation and delays cognitive impairment in Drosophila models of Alzheimer's disease

  • Miyazaki, Honami;Okamoto, Yoko;Motoi, Aya;Watanabe, Takafumi;Katayama, Shigeru;Kawahara, Sei-ichi;Makabe, Hidefumi;Fujii, Hiroshi;Yonekura, Shinichi
    • Nutrition Research and Practice
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    • v.13 no.1
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    • pp.64-69
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    • 2019
  • BACKGROUND/OBJECTIVES: Alzheimer's disease is a neurodegenerative disease that induces symptoms such as a decrease in motor function and cognitive impairment. Increases in the aggregation and deposition of amyloid beta protein ($A{\beta}$) in the brain may be closely correlated with the development of Alzheimer's disease. In this study, the effects of an adzuki bean extract on the aggregation of $A{\beta}$ were examined; moreover, the anti-Alzheimer's activity of the adzuki extract was examined. MATERIALS/METHODS: First, we undertook thioflavin T (ThT) fluorescence analysis and transmission electron microscopy (TEM) to evaluate the effect of an adzuki bean extract on $A{\beta}_{42}$ aggregation. To evaluate the effects of the adzuki extract on the symptoms of Alzheimer's disease in vivo, $A{\beta}_{42}$-overexpressing Drosophila were used. In these flies, overexpression of $A{\beta}_{42}$ induced the formation of $A{\beta}_{42}$ aggregates in the brain, decreased motor function, and resulted in cognitive impairment. RESULTS: Based on the results obtained by ThT fluorescence assays and TEM, the adzuki bean extract inhibited the formation of $A{\beta}_{42}$ aggregates in a concentration-dependent manner. When $A{\beta}_{42}$-overexpressing flies were fed regular medium containing adzuki extract, the $A{\beta}_{42}$ level in the brain was significantly lower than that in the group fed regular medium only. Furthermore, suppression of the decrease in motor function, suppression of cognitive impairment, and improvement in lifespan were observed in $A{\beta}_{42}$-overexpressing flies fed regular medium with adzuki extract. CONCLUSIONS: The results reveal the delaying effects of an adzuki bean extract on the progression of Alzheimer's disease and provide useful information for identifying novel prevention treatments for Alzheimer's disease.

A Study on the Cooperation between the Humanities & Social Sciences and Natural Science & Technology (인문.사회과학과 과학기술부분 협력 방안에 관한 연구)

  • 이종수
    • Journal of Korea Technology Innovation Society
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    • v.3 no.3
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    • pp.125-140
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    • 2000
  • The paper studies on the cooperation between the humanities & social sciences and natural science & technology in 1990's. The article showed policy alternatives about the crisis of humanities & social sciences. That was science wars and we heard that was announced by Sokal affair. In this article, the author inquired into the Korean research policy's crisis and presented the policy alternatives about the crisis of humanities & social sciences and natural science & technology in various ways. In the concrete, the policy alternatives are cultural critique of technology and science and science & development of domain about interdisciplinary studies at the humanities & social science and natural science & technology. In conclusion, First, the author showed the appraisal and institutionalization of interdisciplinary studies. Second, the researcher proposed few policy alternatives and developmental area of interdisciplinary studies between the humanities & social sciences and natural science & technology.

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A Measurement System for Rounded Shoulder Posture using a Wearable Stretch Sensor

  • Nguyen, Manh Thang;Dang, Quoc Khanh;Kim, Younghoon;Chee, Youngjoon
    • Journal of Biomedical Engineering Research
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    • v.39 no.1
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    • pp.10-15
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    • 2018
  • In this paper, we present a wearable measurement system for monitoring rounded shoulders. The system contains a shoulder correction band and a stretch sensor that can correct and measure shoulder posture, respectively. The capacitance of the stretch sensor changes linearly according to changes in the shoulders. To verify measurement, a motion analysis system was used as the reference to compare the change in the rounded angles of the shoulders and the change in the stretch sensor's capacitance. The results indicated that there is a high correlation between the two changes and the system can be used as a monitoring device for rounded shoulders.

Developing an Interdisciplinary Program for the Aged Living Welfare in College of Home Economics (생활과학대학 중심의 노인생활복지 연계전공 프로그램 개발)

  • Kim, Yeong-Hee;Park, Kyoung-Ok;Lee, Hee-Sook
    • Korean Journal of Human Ecology
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    • v.8 no.2
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    • pp.419-435
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    • 1999
  • The purpose of this article was to develop an interdisciplinary program for the aged living welfare in College of Home Economics. This program was developed through the analysis of gerontology curriculum in Korea, Japan, and America, and survey research with social workers who were working in the welfare institutes for the elderly in Korea. Moreover, an interdisciplinary program for the aged living welfare was designed based on the professional role of elderly care and the scope of educational context which were identified. Particular note was that this program could be most effectively implemented in the College of Home Economics. Recommendations for the development and implementation of the program were highlighted.

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Topological analysis of interdisciplinary scientific journals: Which journals will be the next Nature or Science?

  • Zhu, Yongjun;Yan, Erjia;Song, Il-Yeol
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.660-663
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    • 2015
  • Identifying prestigious interdisciplinary journals is very significant for researchers. By publishing research works in prestigious journals, researchers can better propagate their works and get spotlights. Even though the quality of a papers is not represented by the journal that published the paper, it is a general concern of researchers that how to identify a set of good journals to submit their papers. Nature and Science are the two journals that have been considering as the two top interdisciplinary journals worldwide. In this paper, we propose a method for identifying journals that have the potential to become the next Nature and Science through topological analysis of interdisciplinary scientific journals.