• English Language & Literature Teaching
• /
• v.17 no.4
• /
• pp.23-47
• /
• 2011

This study investigates the effect of peer tutoring and peer tutor training program on Korean university students' EFL writing. Six tutors and twelve tutees have participated in the experiment. The tutors were divided into untrained and trained groups each of which was assigned to teach six tutees. The three peer tutors in the experimental group received training on how to give peer tutoring. After the pre-test, the tutees wrote series of drafts on three topics and received written feedback from their peer tutors via email. The results of the post-test showed improvement in writing scores in both groups. The tutees in the trained peer tutor group, however, showed much greater improvement. Their improvement was also more consistent, and the score differences between the two groups increased over time. Analysis of the peer tutors' written feedback indicated that the trained tutors focused more on the higher order concerns in writing than the untrained ones did. In the questionnaire all tutees responded positively to the peer tutoring experience. The results indicate that peer tutor training programs may have beneficial effects on Korean university students' writing abilities especially in the elements of higher order concerns.

• ETRI Journal
• /
• v.34 no.5
• /
• pp.674-683
• /
• 2012

We propose a slot antenna consisting of a rectangular slot on the ground plane, fed by a microstrip line with a rectangular-ring-shaped tuning stub that can be deployed in ultra-wideband (UWB) communication systems to avoid interference with wireless local area network (WLAN) communication. Our antenna can achieve a single band-notched property from the 5 GHz frequency to the 6 GHz frequency owing to a controllable band notch that uses L- and J-shaped parasitic elements. The antenna characteristics can be modified to tune the band-notched property (4 GHz to 5 GHz or 6 GHz to 7 GHz) and the bandwidth of the band notch (1 GHz to 2 GHz). Furthermore, the shifted notch with enhanced width of the band notch from 1 GHz to 1.5 GHz is described in this paper. The UWB slot antenna and L- and J-shaped parasitic elements also provide the band-rejection function for reference in the WiMAX (3.5 GHz) and WLAN (5 GHz to 6 GHz) regions of the spectrum. Experiment results evidence the return loss performance, radiation patterns, and antenna gains at different operational frequencies.

• Journal of Fisheries and Marine Sciences Education
• /
• v.6 no.1
• /
• pp.20-32
• /
• 1994

According to the changing of administrative environment from the high-leveled industrial age to the informational and international open door age, necessity of governmental officials re-training has been being emphasized. For leveling up the re-training effect, leveling up of the instructors' capability is strongly required with enlargement of re-training participating opportunity and the development of curriculum. The authors carried out a study on the securing status of instructors for the governmental officials training facilities and picked up some problems involved. Required academic career of instructors which is certified as holders of bachelor degree or more for the central training facilities and junior college graduate diploma or more for the district ones looks too low considering with trainees' age, academic career and social experiment. Then it should be leveled up to the holders of master degree or more for the central facilities and bachelor degree or more for the district ones. Required official career of instructors for specific subjects which is certified as three years or more looks so short that should be enlarged to five years or more. Preliminary training for instructors themselves should be reinforced before appointing the instructors to have a study on the teaching method and concerned subjects, and also the career of instructors should be reflected with advantage to the promotion of officials.

• Journal of the Korean Society for Precision Engineering
• /
• v.31 no.12
• /
• pp.1121-1126
• /
• 2014

To compensate location error of ultrasonic horn, the laser scanning system based on the galvanometer scanner is developed. It consists of the 3-Axis linear stage and the 2-Axis galvanometer scanner. To measure surface shape of three-dimensional free form surface, the dynamic focusing unit is adopted, which can maintain consistent focal plane. With combining the linear stage and the galvanometer scanner, the scanning area is enlarged. The scanning CAD system is developed by stage motion teaching and NURBS method. The laser scanning system is tested by marking experiment with the semi-cylindrical sample. Scanning accuracy is investigated by measured laser marked line width with various scanning speed.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.13 no.2
• /
• pp.391-396
• /
• 2018

A variety of experiments are being conducted with the advent of Learning Model for flipped-learning. In order to apply flipped-learning as a method of teaching, most of them require a pre-prepared learning video. In this case, there is the burden to create the samples of a 13 weeks, except for the mid term and the final exam in college. These systems also make it difficult to change learning content. In this paper, we suggest using blogs to improve the characteristics that existing flippling systems are less adaptable to environmental changes. A blog can be a good thing for learners who are comfortable with the Internet, In this study, we experiment with flipped-learning, which applies blog to one subject. As a result, we would like to evaluate the meaningful learning effects of this study.

• Journal of Korean Elementary Science Education
• /
• v.39 no.4
• /
• pp.522-532
• /
• 2020

The aims of this study were to do a survey on teachers' perception and operational state for elementary science online remote classes and suggest ways to improve the elementary science online remote classes. The survey was based on responses from 100 teachers who have taught elementary science online remote classes for the first semester of 2020 for COVID-19. The questionnaire used in this study consisted of four parts: general informations of participants, the operation status of elementary science online remote classes, teachers' perceptions on the operation of elementary science online remote classes, ways to improve elementary science online remote classes. As a result of this study, elementary teachers taught elementary science online remote classes on the main use of content utilization type. And they had a difficulty in conducting elementary science online remote classes because of lack of contents, absence of elementary science online remote classes teaching methods, learner management and heavy workload. Therefore, to improve elementary science online remote classes the Ministry of Education and regional offices of education have to develop and provide high-quality contents reflect the characteristics of elementary science subjects, introduce a rent-an-experiment equipment system, and build a science class platform providing frequent real-time interaction between teacher and student.

• Asian Pacific Journal of Cancer Prevention
• /
• v.15 no.8
• /
• pp.3503-3505
• /
• 2014

Background: Interleukin-33 (IL-33) has recently been implicated in tumor development. Methods: Data was obtained from PubMed, EMBASE, Clinical trial, Cochrane Library, Web of Science, CNKI and Wanfang databases. After quality assessment and data extraction, a meta-analysis was performed using Review Manager 5.2 software. Results: There were eight documents included in this meta-analysis. The results showed IL33 levels to be higher in tumor patients than that in health people, but no correlations tumor stage, metastasis and survival time of tumor patients were evident. Conclusion: IL33 may be useful as an alarm factor in tumor detection and prognosis.

• Journal of the Korean School Mathematics Society
• /
• v.2 no.1
• /
• pp.167-179
• /
• 1999

The aim of this study is to improve the basic learning ability of those who make poor progress in mathematics and to keep positive and active learning attitudes in class afterward by using problems whith both make them advance their basic learning ability and supplement lack of previous learning in class or after school. supplementary problems were developed by focusing the ability of basic calculation, the comprehension of concepts, principles, and rules by analyzing necessary contents precisely each domain after itemizing learning contents each unit. the results of the study are this: 1) The students who solved the problems, that were developed to improve the basic learning ability and to supplement the earlier learning during their classes or giving homework, made significant progress in their scholastic achievement; more than those who were not involved. 2) Meaningful changes were demonstrated in the motivation for achievement among the domains of learning attitudes before and after the experiment but, not in their interest, the consciousness of purpose, attention, voluntary and efficient learning as shown in their learning habits. In this study, therefore, the problems which were developed to improve the basic learning ability and to supplement the earlier learning by focusing on the competence for basic calculation, and the comprehension of concepts, principles and rules were effective positively only in the area of motivation for achievement. there were no meaningful differences in the other domains.

• Korean Journal of Applied Biomechanics
• /
• v.24 no.3
• /
• pp.249-258
• /
• 2014

The purpose of this study was to investigate the different patterns of the lower limb between elderly and adult females to reduce the rate of falls. Ten old females(age: $73.1{\pm}2.69yrs$, height: $151.9{\pm}4.82cm$, mass: $57.36{\pm}5.36$) and ten adult females(age: $28\pm}4.76$ yrs, height: $160.6{\pm}6.83cm$, mass: $53.9{\pm}8.44$) were participated in this experiment. The gait motions were captured with Qualisys system and variables were calculated with Visual-3D. The following results were found. The elderly female group showed bigger inclination angle between COM and COP than the adult female group so that the dynamic stability was reduced in walking for the compensation with a bigger stride width. The elderly female group ensure for the necessary forward movement of COM in order to replace the decreased function of ankle and knee joint. If the distance between COM and COP is closer and the energy reduction of a specific joint is reduced, they could prevent the elderly female's falling rate by strengthening of muscles which were related the extension of ankle joint.

• School Mathematics
• /
• v.11 no.3
• /
• pp.351-368
• /
• 2009

This study presents data from a year-long teaching experiment which illustrate how two seventh graders modified their multiplicative thinking and interacted with their representing symbols in the context of combinatorial problem situations. Damon was at the process of construction of recursively multiplicative thinking by modifying his multiplicative reasoning, but Carol appeared to remain at the stage of a binary multiplicative scheme. The two students' struggles with their representing symbols or represented symbols by the teacher show that even well-organized symbolic systems from teachers' perspective do not necessarily help students advance their mathematical capacity.