• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
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• pp.216-217
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• 2005

This paper presents an integrated navagation control concept for underwater vehicles under high speed navigation circumstance. First of all, in order to control an underwater vehicle with respect to automatic navigation, an integrated navigation control method is suggested in view of synchronous control for course keeping, diving and depth control. An exact nonlinear model equation with six-degree-of-freedom is derived for control algorithm. To identify various hydrodynamic coefficients of the equation, an experimental approach is introduced and results are demonstrated for MANTA type model.

• 한국과학교육학회지
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• 제17권2호
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• pp.139-148
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• 1997

This study investigated the influences of the cooperative learning strategies upon students' achievement and their perceptions of learning environments in a middle school physical science course. Prior to instruction, the Group Assessment of Logical Thinking was administered, and its score was used as a blocking variable. Mid-term examination score was used as a covariate. For the treatment group with heterogeneous grouping, cooperative learning instruction (the Learning Together model) was used, which emphasized group reward, individual accountability, and role division. For the control group, traditional instruction was used. After instruction, an achievement test consisting of three subtests (knowledge, understanding, and application), and the perception questionnaire of classroom and laboratory environments, were administered. ANCOVA results revealed that there was a significant interaction between instruction and the level of logical reasoning ability although there were no significant differences in all three subtest scores of the achievement test. For the concrete operational reasoners, the treatment group performed better in the subtests of understanding and application than the control group. For students at the formal and transition levels, however, the treatment group scored lower than the control group. Significant interactions were also found in the perceptions of classroom environment and laboratory environment. For the concrete operational reasoners, the treatment group showed more positive perception than the control group. For the students at the formal and transition levels, the control group had positive perception than the treatment group. Educational implications are discussed.

• 한국간호교육학회지
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• 제19권4호
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• pp.580-593
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• 2013

Purpose: This study was conducted to develop and implement an educational program for cultural competence in nursing for nursing students, and to evaluate its effects on transcultural self-efficacy, intercultural communication competence, and state anxiety. Methods: A nonequivalent control group pretest-posttest design was used with an experimental group (n=22) and a control group (n=27). Outcome variables were measured by transcultural self-efficacy, intercultural communication competence, and state anxiety before and after the program. The experimental group participated in an educational course for cultural competence in nursing for 14 weeks while the control group did not participate in any course. Chi-square test, Fisher's exact probability test, t-test, MANCOVA, and ANCOVA were performed to analyze the data. Results: The experimental group showed significantly higher posttest scores in the transcultural self-efficacy score (F=19.76, p<.001, partial ${\eta}^2=.34$, observed power .99) and the intercultural communication competence score (F=17.56, p<.001, partial ${\eta}^2=.32$, observed power .98) than that of the control group. The experimental group showed a significantly lower state anxiety score (F=5.30, p=.027, partial ${\eta}^2=.12$, observed power .61) than that of the control group. Conclusions: This educational program was effective on nursing students' cultural competence. Therefore, it is suggested that this program be used for other nursing students. It is also necessary to evaluate its effects after a longer period.

• 여성건강간호학회지
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• 제27권4호
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• pp.388-404
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• 2021

Purpose: The purpose of this study was to examine the effects of team-based learning (TBL) on nursing students' communication ability, problem-solving ability, self-directed learning, and nursing knowledge related to high-risk pregnancy nursing. Methods: This quasi-experimental study used a nonequivalent control group pretest-posttest design. The participants were 91 nursing students allocated to an experimental group (n=45) and a control group (n=46). The experimental group received TBL lectures three times over the course of 3 weeks (100 minutes weekly) and the control group received instructor-centered lectures three times over the course of 3 weeks (100 minutes weekly). Data were collected by questionnaires from September to November, 2019. Data were analyzed using the chi-square test, paired t-test, and independent t-test. Results: After the intervention, the mean scores of problem-solving ability (t=-2.59, p=.011), self-directed learning (t=4.30, p<.001), and nursing knowledge (t=3.18, p=.002) were significantly higher in the experimental group than in the control group. No significant difference in communication ability was found between the experimental and control group (t=1.38, p=.171) Conclusion: The TBL program was effective for improving nursing students' problem-solving ability, self-directed learning, and nursing knowledge. Thus, TBL can be considered an effective teaching and learning method that can improve the learning outcomes of high-risk pregnancy nursing in women's health nursing classes. The findings suggest that TBL will be helpful for future nursing students to develop the nursing expertise necessary for providing nursing care to high-risk pregnant women.

• 대한화학회지
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• 제61권4호
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• pp.218-222
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• 2017

Game shows are capable of grabbing students' attention in a lecture, and at the same time offers much delight to students to learn in a more interesting and entertaining way. A mind game was developed and incorporated into the teaching of basic organic chemistry course at the Universiti Malaysia Terengganu. The modified brainteaser game is comprised of a set of problems associated with vocabulary or concepts in basic organic chemistry, whereby students were required to solve within a stipulated time frame. Students' attitude changes were then evaluated with the administration of Attitude toward the Subject of Chemistry Inventory Version 2 (ASCIv2) questionnaire. The result of this study revealed that the intervention group experienced a significant change in attitude towards the course as compared to the control group. The intervention group also experienced a positive learning environment, resulting in an increased academic performance and interest.

• 한국정보통신학회논문지
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• 제13권11호
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• pp.2441-2446
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• 2009

무선 센서 네트워크는 특정지역에서 데이터를 수집하여 처리는 작은 센서 노드들로 구성된다. 이러한 센서들은 최초로 설치된 이후에는 배터리로 동작되며, 동작기간이 수개월에서 수년까지 지속되어야 함으로 제한된 자원을 효율적으로 활용할 수 있어야 한다. 본 논문에서는 데이터 중심개념을 적용한 Directed Diffusion의 기본동작구조에 RHC(rounting history cache)를 적용하여, 데이터 전송경로 설정에 신뢰성과 효율성을 높인다. 제안하는 RHC 알고리즘은 각 센서 노드가 자신의 RHC를 주기적으로 업데이트 하여 최적화경로를 저장하고 있기 때문에, 이벤트 발생시마다 경로를 재설정하여 에너지가 낭비되는 것을 최소화하였고, 중복메시지의 최소화로 신뢰성을 향상시켰다.

• 한국실천공학교육학회논문지
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• 제3권1호
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• pp.51-55
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• 2011

본 논문은 한경대학교 정보제어공학심화과정 3학년에 포함된 2학점(3시간) 실험교과목 "기초전자회로설계및실험"과 "응용전자회로설계및실험"에 포함된 1학점(1시간) 요소설계의 운영에 대해서 소개한다. 1학점(2시간)의 실험과 병행하여 1학점(1시간) 요소설계을 공학인증기준에 부합하도록 운영하는 절차, 운영결과 및 개선점을 소개한다. 학생들은 설계교과목 이수체계도에 따라서 체계적으로 설계교과목을 이수해야 효과적인 설계법을 배울 수 있다.

• 대한지구과학교육학회지
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• 제6권2호
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• pp.112-123
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• 2013

Under this research, the survey is made on the definitive influence of the first-year education process of the science focus school for each of humanities, science and science core courses and the level of satisfaction of the non-curriculum experiment activity program for each course to find out the effectiveness of the first-year education process of the science focus school. For this purpose, this research has set three research issues. First, By clarifying the research result through the first-year education curriculum for science core school, noticeable change was observed for science focus school students through the change of attitude related to science for each desired course of students. Second, in the self-directed learning characteristics change, there was meaningful change for each desired field of students. Students hoping for humanities curriculum had great help in improvement of creative thinking for openness, creativeness and the like, but the influence was slightly insufficient in the moderation and control capability on themselves in learning attitude. Third, By analyzing the research result comprehensively, the first-year education curriculum for science core school provides high level of tailored science learning for the science focus school students and the level of satisfaction for students was significantly high.

• Clinical and Experimental Pediatrics
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• 제53권9호
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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.

• Journal of Power Electronics
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• 제10권6호
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• pp.647-659
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• 2010

This paper presents a part of North Africa/Europe collaboration results in education to develop project-oriented courses in power electronics and motor drive field. The course aims to teach Permanent Magnet motor drives close to a real world project of significant size and depth so as to be motivational, namely mobile robot project. Particular skills, student will acquire, are those relative to the detailed design and implementation of PM motor controllers in DSP based rapid prototyping environment. Simulation work is completed using graphical modeling tools in Simulink/Plecs, while real-time implementation is achieved by means of eZdspF2812 board and Simulink/TI C2000 Embedded Target tools. This flexible development environment fit the robot traction system very well and provides exactly the functionality necessary for an efficient PM motor drives teaching as demonstrated by a set of simulation and experiments.