• Journal of Agricultural Extension & Community Development
• /
• v.19 no.1
• /
• pp.79-94
• /
• 2012

Due to the increase of the number of farmers who have entrepreneurial intentions and the expansion of governmental support to invigorate the regional economy, the interest in manufacture of high-quality agricultural processed food is increasing, and the study of the method to realize it efficiently is continuing. Especially, the method to visualize a manufacturing process by simulation and analyze it to extract an improved scheme has advantages of saving time and cost in comparison with trial and error method. In this study, the current manufacturing environment was analyzed by applying simulation on Korean traditional sweets, which is typical agricultural processed food. By extending this kind of method into small businesses processing other agricultural products, as well as Korean traditional sweets, it can draw strengthening of comparativeness through the improvement of productivity and product quality.

• Korean Journal of Child Studies
• /
• v.22 no.4
• /
• pp.225-241
• /
• 2001

This study examines the effect that mathematics teaching efficacy has on teacher's mathematics education practices. Data was obtained from 220 kindergarten teachers who responded to the questionnaire, the mathematics teaching efficacy belief instrument (developed by Enochs). Among these 220 teachers, upper and lower 5 % of the teachers on mathematics teaching efficacy belief were chosen to identify the influence of mathematics teaching efficacy on mathematics activity style, teaching strategy, and teacher-child interaction. The results indicated that teacher's interest in math, previous participation in mathematics teaching method course mainly influenced mathematics teaching self-efficacy. Teachers with high mathematics teaching efficacy belief preferred providing mathematical learning activity than providing other learning areas. They employed effective mathematics teaching strategy such as high and medium cognitive distancing strategy and established positive teacher-child relationship. Implications for teacher education and professional development activities were discussed.

• Journal of Korean Home Economics Education Association
• /
• v.9 no.1
• /
• pp.39-52
• /
• 1997

The purposes of this study are 1) to identify the position and the problems of Home Economics in Elementary School, and 2) to propose orientation for the future curriculum revision. Elementary Home Economics, historically, has been partially practiced as a part of Practical Arts Education. As a results, the nature of Home Economics Education has been distorted and lacked the disciplinary consistency with Middle School Home Economics Education： the curriculum of Home Economics Education ignored the importance of the understanding family life as well as underscored the technical skills. The identified status and problems has on implication for the subject’s further development. The propositions for Elementary Home Economics Education which has the original intention, are as follows：(1) the curriculum of Practical Arts Education must be built on theorectical base and criteria. (2) the name of subject, Practical Arts Education, must be changed to [Technology$.$Home Economics]. (3) the contents of the subject must be practical which to promote motivations and interest of students.

• 제어로봇시스템학회:학술대회논문집
• /
• 2001.10a
• /
• pp.114.6-114
• /
• 2001

According to expansion of wireless communication system and mobile device, interest has been growing in personal navigation system integrated with wireless system. In portable consumer electronics, such as cellular phones, GPS and PDA, one of major design factors is the power consumption. Solutions of reducing the power dissipation are low voltage, low system clock power management and so on. This paper develops a GPS receiver based on the advanced power management algorithm that achieves very low average power consumption. Both RF and DSP chips are powered down and reactivated only when the position fixing is required. In order to run, the developed includes the RTC calibration function and the fast reacquisition function using XMC (eXtended Multiple Correlator) ...

• The Journal of Advanced Prosthodontics
• /
• v.6 no.2
• /
• pp.138-145
• /
• 2014

Cobalt-Chromium (Co-Cr) alloys are classified as predominantly base-metal alloys and are widely known for their biomedical applications in the orthopedic and dental fields. In dentistry, Co-Cr alloys are commonly used for the fabrication of metallic frameworks of removable partial dentures and recently have been used as metallic substructures for the fabrication of porcelain-fused-to-metal restorations and implant frameworks. The increased worldwide interest in utilizing Co-Cr alloys for dental applications is related to their low cost and adequate physico-mechanical properties. Additionally, among base-metal alloys, Co-Cr alloys are used more frequently in many countries to replace Nickel-Chromium (Ni-Cr) alloys. This is mainly due to the increased concern regarding the toxic effects of Ni on the human body when alloys containing Ni are exposed to the oral cavity. This review article describes dental applications, metallurgical characterization, and physico-mechanical properties of Co-Cr alloys and also addresses their clinical and laboratory behavior in relation to those properties.

• Composites Research
• /
• v.29 no.4
• /
• pp.186-193
• /
• 2016

The development of electrospun nanofibers with improved mechanical properties is of great scientific and technological interest because of their wide-range of applications. Reinforcement of carbon nanotubes (CNTs) into the polymer matrix is considered as a promising strategy for substantially enhancing the mechanical properties of resulting CNTs/polymer composite mats on account of extraordinary mechanical properties of CNTs such as ultra-high Young's modulus and tensile strengths. This paper summarizes the recent developments on electrospun CNTs/polymer composite mats with an emphasis on their mechanical properties.

• The Mathematical Education
• /
• v.48 no.1
• /
• pp.47-59
• /
• 2009

Recently our society confronts with the concern over the college students' apparent lack of understanding and interesting of mathematics. In late 1980s the calculus reform movement in US was triggered to increase both passing rates and a general interest in the subject. The purpose of this paper is to investigate teaching of college calculus and its curriculum in order to promote students' interesting and understanding. We deal with 4 questions. Firstly, we research the history and motivation of the calculus reform movement in US. Secondly, we do case study about the debate between reformed and traditional calculus. Then we evaluate the effectiveness of reformed calculus in comparison to traditional calculus. Finally we investigate possible ways to apply reformed calculus in our university mathematics education and suggest some points to improve teaching calculus.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
• /
• 2003.10a
• /
• pp.47-52
• /
• 2003

In the recent years, as the research and the development of micro and precision machinery become active, the interest of micro actuators using SMA(Shape Memory Alloy) has been increased. The dynamic characteristic analysis of SMA is necessary for actuator application and many common researches report the material characteristics of SMA sufficiently. However, the research on dynamic characteristics is very deficient. In this paper, the helical spring are fabricated with NiTi SMA wire of high resistivity. The force, response speed, temperature, and displacement are measured by digital force gauge, infrared thermometer, and laser displacement sensor so that the dynamic characteristics of this SMA is analyzed. Also, bidirectional actuator was fabricated and experimented fir its performance.

• Proceedings of the Korean Society of Applied Pharmacology
• /
• 2003.11a
• /
• pp.116-116
• /
• 2003

In 1998, Osada and co-workers isolated 140 mg of a novel cytokine modulator from 18 L of the culture broth of Streptomyces RK95- 31 isolated from a soil sample in Hiroshima Prefecture. This new immunosuppressant was named (-)-cytoxazone and its absolute configuration was determined on the basis of its NMR, CD and X -ray analysis. It interferes with cytokine IL4, IL10 and IgG production by selective inhibition of the signaling pathway of Th2 cells, but not Thl cells. Inhibitors of Th2-dependent cytokine production have potential as potent chemotherapeutic agents in the field of immunotherapy. The (-)-cytoxazone is different from known immunomodulators such as FK 506 and rapamycin in respect of structure and biological activity. As such cytoxazone should be a useful tool for understanding signaling pathways in Th2 cells, the synthesis of (-)-cytoxazone is of interest for the development of new cytokine modulators.

• The Journal of Korean Medical History
• /
• v.29 no.2
• /
• pp.71-81
• /
• 2016

This paper discusses the research of preventive medicine in terms of philosophy and history, publication and people, branch research, applied research, Gi-gong, conduction exercise and so on. Currently, fields of philosophy, history, physical education and Korean Medicine are actively participating in the research on preventive medicine. From the philosophical view, theoretical aspects of preventive medicine are closely examined. From the historical view, the historical context is of focus. From the physical education viewpoint, Gi-gong, gymnastics and physical education philosophy are studied. In the field of Korean medicine where practicality is most important, plans to apply preventive medicine to life are creating new possibilities for research on preventive medicine. In this time where social interest on health is at peak, combined research of basic theory and application will have positive effects on the development of preventive medicine.