• Journal of the Korean School Mathematics Society
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• v.19 no.3
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• pp.217-238
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• 2016

The purpose of the study is to analyze the influence of the accomplishing pressure of teachers and parents on academic achievement in mathematics in accordance with the differences in the degree of intrinsic motivation in mathematics. The accomplishing pressure of teachers was meaningful on the academic achievement in mathematics in the analysis including the interaction of intrinsic motivation in mathematics. The students with high degree of intrinsic motivation were influenced in a negative manner. Meanwhile the students with middle or low degree of intrinsic motivation were influenced in a positive manner. The result implies that it is more important to consider the level of mathematical intrinsic motivation, when teachers accomplish an achievement pressure to improve academic achievement in mathematics. On the analysis including the interaction of intrinsic motivation of mathematics, the accomplishing pressure of parents showed positive effect in general on the academic achievement in mathematics. The students with high or middle degree of intrinsic motivation were highly influenced in a positive manner than the students with low degree of intrinsic motivation. The result implies the necessity of the implementation of continuous accomplishing pressure on students as the high degree of accomplishing pressure of parents leads to positive influence on the academic achievement in mathematics.

• Journal of the Korean Chemical Society
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• v.58 no.5
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• pp.463-477
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• 2014

The purpose of this study is to investigate the teaching-learning effects in the experimental classes for the 'Redox' unit of science textbook of 11th grade using self-regulated learning strategy. Simultaneously, the effects of teaching-learning through the student's characteristics of the scientific high school were also included. The experimental and the controlled groups were selected by the teaching-learning method established on self-regulated learning strategy and regular laboratory activity based on the teacher' instruction, respectively. The questionaries of the scientific inquiry and scientific attitude were examined by the student. For their achievement, the total score which was obtained from the formative evaluation and performance assessment was utilized. After the laboratory activity for the unit grounded on the self-regulated learning strategy, the mean values of the scientific inquiry, scientific attitude, and achievement by the experimental group were higher than those of the controlled group. There was significant difference between the two groups in the post-test. By the results of the post-test for the experimental group, there has been somewhat relationship between the self-regulated learning strategy and the scientific inquiry, the scientific attitude, and the scientific achievement.

• The Journal of the Korea Contents Association
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• v.16 no.4
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• pp.12-22
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• 2016

The present study aims to evaluate the self-determined motivational features of smartphone addiction management apps. This study analyzed whether smartphone addiction management apps have features to support adolescent users' basic needs, that is, autonomy, competence, and relatedness. 26 apps were analyzed. Among them, 8 apps were parental management apps installed on a parent's phone and a child's phone, and 18 apps were self-management apps installed on a child's phone. According to a content analysis, only 3 of 26 apps addressed all three basic needs. Overall, the functions to support users' competence and relatedness were rarely found. Particularly, parental management apps had a high level of controlingness. The results suggest that the addiction management apps have limitations in stimulating adolescent users' self-determined motivation to manage their phone use.

• JOURNAL OF ELECTRICAL WORLD
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• no.9 s.57
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• pp.62-64
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• 1981

전회까지 빌딩에 시설되는 설비중에서도 비교적 중요한 기기의 기초와 실무에 대하여 소개해 왔지만, 지금까지 소개하지 못한 것 중 앞으로 더욱 이용될 경향이 있는 기기에 대하여 소개하고 이 시리즈를 끝맺기로 한다.

• Journal of Gifted/Talented Education
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• v.21 no.3
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• pp.611-630
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• 2011

The purpose of the study was to investigate which psychological factors influence on the gifted students' achievement. As a psychological factor, self-determination, learning goal-orientation, self-efficacy, belief of intelligence, and self-regulated learning strategy were examined. The difference in psychological factors between the gifted with high achievement and the gifted with low achievement was to explored. For the study 128 gifted students' data from second-year data of Korean Education Longitudinal Study (KELS) were selected and analyzed. The findings indicate that the predictors of gifted students' achievement are extrinsic regulation, identified regulation, mastery-approach goal, self-efficacy, elaboration, and meta-cognition factor. Especially, the factor of elaboration and identified regulation are the strongest predictors. The findings from t-test analysis indicate that the gifted with low achievement show the low level in self-determination, mastery-approach, self-efficacy, elaboration, meta-cognition, place management and seeking social assistance from teacher. Therefore the developing elaboration, one of regulation learning strategy, is essential to improve the achievement of the gifted students with low scores.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.44 no.5
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• pp.45-53
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• 2007

To recover transmitted signal perfectly at DTV receiver, we have to acquire carrier frequency synchronization to compensate pilot signal which located in wrong position and rotated phase. Also, we need a symbol timing synchronization to compensate sampling timing error. Conventionally, to synchronize symbol timing, we use Gardner's scheme which used in multi-level signal. Gardner's scheme is well known for its sampling the timing error signal from every symbol and it makes easy to detect and keep timing sync in multi-path channel. In this paper, to discuss the problem when the received power level is out of range and we cannot get synchronization information. With this problem, we use 2 step procedures. First, we put a received signal power compensation block before Garder's timing error detector. Second, adaptive loop filter to get a fast synchronization information and averaging loop filter's output value to reduce the amount of jitter after synchronization in PLL(Phased Locked Loop) circuit which is used to get a carrier frequency synchronization and symbol timing synchronization. Using the averaging value, we can estimate offset. Based on offset changing ratio, we can adapt adaptive loop filter to carrier frequency and symbol timing synchronization circuit.

• Asia Marketing Journal
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• v.4 no.2
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• pp.104-132
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• 2002

본 연구는 소비자들의 광고평가과정을 정보처리능력의 관점인 사전지식과 정보처리동기의 관점인 관여도의 조절적 역할을 고려하여 검토하였다. 이를 위하여 본 연구에서는 인지자극과 감정자극이 동시에 제공된 광고에 대하여 소비자들의 인지적, 감정적, 행동의욕적 평가관계를 구조적으로 살펴보고, 이를 바탕으로 각 구조적 관계들을 사전지식수준과 관여도수준에 따라 그 상대적 역할들을 살펴보았다. 실증분석결과 본 연구는 기존의 DMH 모델을 지지하는 것으로 나타났으며, 특히 광고에 대한 감정적 평가(Aad)에서 상표에 대한 인지적 평가(Cb)통해 상표에 대한 감정적 평가(Ab)에 미치는 영향력의 정도는 관여도보다는 사전지식이 더 큰 역할을 하는 것으로 나타났다. 또한 광고에 대한 감정적 평가(Aad)에서 상표에 대한 감정적 평가(Ab) 그리고 상표에 대한 감정적 평가(Ab)에서 상표에 대한 행동의욕적 평가(Ib)로의 영향력은 관여도가 중요 조절변수임을 확인하였다.

• The Journal of the Korea Contents Association
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• v.17 no.12
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• pp.319-329
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• 2017

This study is on the effects of lifelong education participative motivation, self-efficacy, and self-directed learning on subjective happiness of middle age adults. Middle age adults 40-64 years old are questionnaire survey target in Incheon and Gyeonggido and total 289 copies among 300 were analyzed through SPSS 21.0. The major findings of this study con be seen as follows: The variables more affected on educational satisfaction of middle age adults are goal-oriented motivation and activity-oriented motivation in lifelong education participative motivation, self-regulated efficacy in self-efficacy, and each personality, recognition and environment in self-directed learning. In conclusion, new paradigm is needed for middle age adults in lifelong learning society. This program should provide them with knowledge and information for adapting the future society, Furthermore, middle age adults can achieve their own self exploration, self-development and self-realization through the lifelong education program. Given a chance of lifelong education, middle age adults should be provided with the specific programs.

• Journal of Korea Multimedia Society
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• v.13 no.1
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• pp.30-37
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• 2010

Many embedded real - lime systems have adopted processors supported with dynamic voltage scal-ing(DVS) recently. Power is one of the important metrics for Optimization in the design and operation of embedded real-time systems. We can save considerable energy by using slowdown of processor sup-ported with DVS. In this paper, we improved the previous algorithm at a point of view of time complexity to calculate task slowdown factors for an efficient energy consumption in embedded real-time systems with task synchronization. We grasped the properties of the previous algorithm having $O(n^{2})$ time complexity through mathematical analysis and s simulation. Using its properties we proposed the improved algorithms with O(nlogn) and O(n) time complexity which have the same performance as the previous algorithm has.

• Proceedings of the Acoustical Society of Korea Conference
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• autumn
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• pp.217-220
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• 2000

일반적으로 고음질 음성합성을 하기 위해서는 합성음의 지속 시간을 변경하여 줌으로써 운율을 조절하는 기법이 필요하다 이에 먼저 고음질용 음성부호화법을 선정하여야 하고 정확한 피치와 피치시점검출을 통해서 음원분류가 되어야한다. 본 논문에서는 제안한 자동 피치시점 검출을 적용해서 운율조절에 필요한 지속시간 조절 법을 제안하고자 한다. 제안한 방법은 시간영역에서 직접 처리하기 때문에 피치동기분석이 용이하고 다른 영역으로의 변환과정이 불필요하다. 결과적으로 파형부호화법을 적용하고 제안한 자동 피치서점 검출에 의한 지속시간 조절법을 적용하였을 때 비교적 우수한 결과를 얻을 수 있었다.