• Plant Biotechnology Reports
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• v.5 no.1
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• pp.1-7
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• 2011

Secondary walls have recently drawn research interest as a primary source of sugars for liquid biofuel production. Secondary walls are composed of a complex mixture of the structural polymers cellulose, hemicellulose, and lignin. A matrix of hemicellulose and lignin surrounds the cellulose component of the plant's cell wall in order to protect the cell from enzymatic attacks. Such resistance, along with the variability seen in the proportions of the major components of the mixture, presents process design and operating challenges to the bioconversion of lignocellulosic biomass to fuel. Expanding bioenergy production to the commercial scale will require a significant improvement in the growth of feedstock as well as in its quality. Plant biotechnology offers an efficient means to create "targeted" changes in the chemical and physical properties of the resulting biomass through pathway-specific manipulation of metabolisms. The successful use of the genetic engineering approach largely depends on the development of two enabling tools: (1) the discovery of regulatory genes involved in key pathways that determine the quantity and quality of the biomass, and (2) utility promoters that can drive the expression of the introduced genes in a highly controlled manner spatially and/or temporally. In this review, we summarize the current understanding of the transcriptional regulatory network that controls secondary wall biosynthesis and discuss experimental approaches to developing-xylem-specific utility promoters.

• Journal of the Korean Society of Physical Medicine
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• v.11 no.4
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• pp.79-84
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• 2016

PURPOSE: The purpose of this study was to investigate effects of Horse riding simulator exercise on pain, dysfunction and dynamic balance in adults with nonspecific chronic low back pain. METHODS: In this study, total 19 college students usually complain of low back pain who were randomly divided into the horse riding simulator exercise group (n=10), lumbar strengthening exercise group (n=9) were recruited. Each group carried out for 30 minutes exercise three times a week for 4 weeks. Horse riding simulator exercise group carried out 15 minutes horse riding simulator exercise and 15 minutes lumbar strengthening exercise. Lumbar strengthening exercise group carried out 30 minutes lumbar strengthening exercise. Visual analogue scale (VAS) were measured for evaluation back pain. Korean oswestry disability index (KODI) were measured for dysfunction. Limits of stability (LOS) were measured for dynamic balance. RESULTS: VAS, KODI, LOS results showed a significant change within both horse riding simulator exercise group, lumbar strengthening exercise group. CONCLUSION: Present study suggested that the horse riding simulator exercise can improve back pain, dysfunction, dynamic balance. Horse riding simulator exercise provides more convenience, interest and motivation than conversional therapy and it could be a possible approach to adults with nonspecific chronic low back pain.

• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.270-273
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• 2008

Telematics is a leading IT service where wireless internet service represented by information and mobility is extended to the area of transportations to provide Telematics service. One of the killer-application about Telematics is navigation system. Recently, due to the mass storage conversion, the performance of the terminal and mobile communications technology development, navigation system is also changed. It more and more develops into 3D in a pre-existence 2D map. In the future, it is expected to include the remote sensing map or video map. There is also the characteristic of all the information expressed in frequently a change partially happening. That is, POI(Point Of Interest) which is freshly registered or is deleted is many. In a pre-existence, Map Contents Providers offer the new version map by off-line monthly or quarterly. And a user wastes time and is inconvenient because of updating the total map by the off-line. Thus, in this paper, in order to resolve this, we describe MAUS(Map Air Update Server) for updating only the partial map that was changed

• Journal of the Korean Society of Food Culture
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• v.35 no.3
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• pp.311-322
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• 2020

Recently, there is growing interest in studying the dietary patterns that affect the risk of circulatory system diseases (CSDs). We investigated the relationship between CSDs and dietary patterns through a follow-up study in Korea (2001-2016). The participants of this study were obtained from the Korean Genome and Epidemiology Study (KoGES). This study was a large community-based cohort study (the Ansan-Ansung areas) conducted to assess the effects of various factors, especially diet, on the onset of chronic diseases among the Korean population aged 40-69 yrs. Baseline data were collected from 2001 to 2002, and follow-up studies were performed every 2 yrs, with over 7 follow-up studies performed (2015-2016). Three dietary patterns were identified using factor analysis: "vegetable and seafood (men)/soup and stew (women)" pattern, "sweet foods and breads-rice cake" pattern, and "multigrain rice and cooked white rice" pattern. None of the dietary patterns were significantly associated with the risk of CSDs in either men or women. Our follow-up study is meaningful as it investigated whether the dietary patterns of individuals according to sex affects the development of CSDs.

• The Journal of the Korean Society for Microbiology
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• v.16 no.1
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• pp.57-64
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• 1981

The clinical need for agents to modify immune response in the treatment of viral infection has lead to an increased interest in cellular and biochemical mechanisms regulating the immune response and to the development of a variety of biological and chemical substance with immunomodulatory activity. Inosiplex has shown antiviral activity in tissue culture, animal models and huamn studies through augmentation of immune response. However, the effect of inosiplex on immune response in animal has not been extensively analyzed, and the effect of inosiplex on immune response has been paradoxical depending on the time of administration of inosiplex in relation to that of antigen. Therefore, this study was undertaken to assess the effect of inosiplex on the immune response to sheep red blood cells(SRBC) in normal and viral infected mice. Inosiplex increased cellular immune response and plaque forming lymphocyte response to SRBC, decreased the recovery of S. typhimurium from infected mice spleen, and restored the depressed cellular immune response by measle and newcastle disease virus infections. All of the above results were observed only when inosiplex was given after immunization but did not when given before immunization. These results indicate that inosiplex stimulate the efferent are of immune response and may even block the afferent are, and suggest that inosiplex is a very promising drug in therapy of many viral infections.

• Publications of The Korean Astronomical Society
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• v.21 no.1
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• pp.11-20
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• 2006

We carried out a follow-up study on the students who participated in International Astronomy Olympiad(IAO). We surveyed home and school environment, personal characteristics with regard to four high school student and five college students who participated in IAO from 2002 to 2005. In the home environment variable of science elite students who took part in the IAO, we found out significant corelation between science elites and their parent's educational career. In their personal characteristics, we found out considerably their motivation capacity, intelligent curiosity, flexible and creative thinking ability. This study illuminated that the experience of IAO participation offered the opportunity for the students to gain mare self-esteem and positive confidence on scientific study. The IAO experience is construed to effect greatly the students' future. Through the IAO experience, the participating students are expected to major in astronomy and become excellent astronomers in the future. We expect that the interest of student will increase greatly in the area of astronomy and it will contribute to the substantial development of Korean astronomy. In this respect, with the constant support to the IAO participants, the effort to cultivate outstanding astronomers and follow-up study on those participants of the IAO should be continued.

• Journal of Korean Public Health Nursing
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• v.31 no.3
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• pp.567-581
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• 2017

Purpose: The purpose of this study was to develop a Health Mileage Program (EHMP) to promote exercise amongst the elderly and assess the feasibility of the program. Methods: A literature review to identify the effects of exercise in the elderly was conducted. Relevant cases were investigated and in-depth interviews with exercise instructors were conducted, after which the EHMP was developed based on the assessment and tested in three regions. The outcome was evaluated using indicators such as attendance rate, number of participants, proportion of participants who received health education, and proportion of participants who measured their physical and mental status. Results: Based on assessment, we developed an EHMP composed of four steps. Following application of the EHMP in three regions, ${\geq}80%$ of the participants received incentives. Additionally, ${\geq}85%$ of participants underwent measurement of their physical and mental status. The proportion of participants who received health education differed among regions. Conclusion: The EHMP program increased participation and interest in exercise programs for the elderly. However, there is concern regarding availability due to regional differences in resources related to elderly exercise; therefore, it will be necessary to invest in infrastructure, including facilities, and knowledgeable instructors.

• The Journal of Korean Association of Computer Education
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• v.14 no.4
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• pp.53-61
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• 2011

Recently, the importance of information security is emphasized in IT related field. The agency related to information security implements the policies to emphasize the security and protection of the privacy. However, the issue in many companies and users is that awareness of security is still poor. Therefore, in this paper, we develope the learning program for AES(advanced encryption standard) block cipher, to raise the awareness of security. Also, wish to cause interest about AES cipher because user confirms process that is encryption/decryption through program of this paper directly and prove awareness about information security.

• The Journal of Korean Association of Computer Education
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• v.16 no.3
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• pp.31-39
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• 2013

We developed a smart learning system by using the 'bring your own device' concept, which means the policy of permitting teacher and learners to bring personally owned mobile devices such as laptops, tablets, smart phones, etc. and applied the system to school classes. In addition, we analyzed the learner's satisfaction related to interfaces, interactions, applications, technical support, and evaluation areas. The evaluation system consists of App program for tablet PC's and smartphones, web program for desktop PC and electronic teaching desk, and server program for evaluation and database. Because all the teaching materials, feedback data and evaluation materials about learners are stored on the server, students can receive the necessary data through real-time feedback using their smartphones and desktop PC's. As a result, it could increase educational achievement with interest in learning.

• Korean Journal of Childcare and Education
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• v.16 no.2
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• pp.89-118
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• 2020

Objective: The purpose of this study is to conduct maker-education for prospective child care teachers explore changes and for the results to be used as a basic data to study the utilization of maker-education. Methods: To that end, 36 prospective child care teachers attending nursery school applied to the maker-education program and to the curriculum of children's literature and play. The collected interview materials and student journals were qualitatively analyzed. Results: The results showed that prospective child care teachers started with mixed expectations and but then actively participated in worries classes with interest and had fun. Also, in the stage of sharing, they changed from having difficulty communicating with colleagues to developing an attitude of cooperation and unity through communication. In addition, it has been shown that from feeling the difficulties of planning, planning changes and modifications are directly related to their development and that they are quickly and wisely dealt with. Conclusion/Implications: It is recognized that there is a need for a follow-up study to verify the effect of this as meaningful implications are derived from the effects of positively accepting feedback, planning to attempt a step-by-step approach, and active attitude toward communication between colleagues.