• 아동학회지
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• 제31권3호
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• pp.183-198
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• 2010

The purpose of this study was to interpret relational aggression strategies in 4 year old young children's interactions in 'Sansae class' in terms of two-fold dimensions of proactivity and reactivity. Following an ethnographical approach, participative observation on young children and in-depth interviews with the teacher were employed, over the course of 30 sessions of 3 hours duration. The results are as follows; proactive relational aggression was more frequently observed in girls, and their major strategies employed against someone they disliked were ignoring them, distorting play-rules, and so on. Major strategies of reactive relational aggression in girls were largely manipulative in nature, for example, 'threatening their friend' and 'withdrawal of friendship'.

• ALGAE
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• 제17권1호
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• pp.33-39
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• 2002

Mechanisms of competition between two canopy algae and an understory alga were investigated by a field manipulative experiment using artificial thalli. The study was carried out in the upper intertidal zone at Nudibranch Point in Vancouver Island, British Columbia, Canada, where two fucoids, Fucus gardneri and Pelvetiopsis limitata, and a turf red alga, Mazzaella cornucopiae, were dominant in the algal community. The experiment was designed to test three hypotheses, shading, whiplash, and allelopathy, imposed by potential fucoid effects on M. cornucopiae. Only the shading effect was significant, indicating that adult fucoid thalli reduced. M. cornucopiae biomass underneath the fucoids. Results indicated that reversal of competitive dominance existed between F. gardneri and M. cornucopiae depending on the life history stage of the competitors. By including the turf alga's effects on the fucoids, the well-balanced and non-hierarchical interaction networks among the major macroalgae support the high likelihood of species coexistence in the community.

• 대한수학교육학회지:학교수학
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• 제2권2호
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• pp.459-474
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• 2000

It has been said that concrete materials are useful and necessary when children learn mathematics. But it has been proved by several researches teachers don’t often use them even if they agree that they are useful. This article focuses on the lack of systematic and applicable research on manipulatives. Therefore, it tries to identify the state of current research and to present the concrete domains which need more study in the future, in order to induce both qualitative and quantitative research. The following nine domains cover almost all the research on manipulatives so far affect of manipulatives on achievement. types of learners, mathematical topics, subjects of operation, variety of mainipulatives, instructional method, degree of involvement of mainpulatives in class, selection criteria, and place for use.

• 대한수학교육학회지:수학교육학연구
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• 제9권1호
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• pp.295-309
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• 1999

The primary purpose of this study is to investigate problems with the current mathematics textbook. According to a survey, the following were the findings: Textbook is only a tool-book for introducing mathematical facts. It is a unique book for all students possessing different level of mathematical ability. There is difficulty in teaming math using technological devices and in activating(mental and concrete) manipulative activities. There is difficulty in communicating while doing mathematics. There is lack of defined and developed layout of textbook, et. al. It can be however found that these problems can be solved to some degrees, when mathematics textbook is developed based on constructivism. Recently, in mathematics education, it has been gradually emphasized that constructivism can be powerful in teaching and learning mathematics. There are however some difficulties in developing mathematics textbooks to reflect constructivism, such as to fill the gap between the contents written in the national curriculum determined in advance and the contents which students construct psychologically or socially in mathematics class.

• 셀메드
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• 제4권4호
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• pp.25.1-25.4
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• 2014

Neck pain is an extremely common symptom with a variety of potential etiologies. A significant number of patients are turning to complementary and alternative medicine therapies. In particular, chiropractic and osteopathic manipulation techniques are discussed. "Low quality evidence", as per the GRADE system criteria used by the Cochrane Review, supports the beneficial effects of these treatments Complications are generally benign and self-limited although occasional catastrophic consequences have been documented. Medical practitioners should familiarize themselves and their patients with the risks and benefits of complementary and alternative medicine in order to make informed decisions.

• 대한가정학회지
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• 제20권4호
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• pp.185-192
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• 1982

The purpose of this study was to examine preschool children's participation tendency and use of play materials in imaginative play. The subjects for the study included 22 boys and girls in nursery school. These children were observed for 110-3-minutes of play behavior during free play at nursery school, especially in block area and housekeeping area. The results obtained from the study were as follows. 1. There was a significant association between paricipation tendency in imaginative play and age or sex, Boys engaged in more social imaginative play than girls, and four-year-olds engaged in more social imaginative play than three-year-olds. 2. There was sex difference in the content of imaginative play and use of play materials. That is, boys usually chose masculine kinds of toys such as block, cars, trucks, and manipulative materials. And the boys' common fantasies were about car, robert and fighting. Girls usually chose play dough, kitchen sets, and blocks and there were maines stories of family life and cooking. 3. Children preferred to use more realistic toys in imaginative plays and there were few cases of imaginative plays with no materials.

• Journal of Public Diplomacy
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• 제2권1호
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• pp.43-68
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• 2022

Multiple modes of communication on social media can contribute to public diplomacy in informing, conversing, and networking with members of foreign publics. However, manipulative behaviours on social media, prevalent especially in high tension contexts, create disruptions to authentic communication in what could be grey/black propaganda or information warfare. This study reviews existing literature about models of public diplomacy to guide an empirical study of China's communication in the #SouthChinaSea conversation on Twitter. It uses computational methods to identify, record, and analyze one-way, two-way, and network communication of China's actors. It employs manual qualitative research to determine the nature of China's actors. On that basis, it assesses China's Twitter communication in the issue against various models of public diplomacy.

• 한국멀티미디어학회논문지
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• 제14권2호
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• pp.307-317
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• 2011

게임 캐릭터 커스터마이징은 희소가치성을 즐기려는 사용자의 욕구와 함께 진화하여 캐릭터 커스터마이징이 가능한 범주는 넓어지고 있다. 그러나 큰 관심에도 불구하고 캐릭터 커스터마이징 인터페이스는 검증된 가이드라인 없이 각 게임회사의 편의에 의해 제작되어지고 있다. 게임의 캐릭터 커스터마이징 인터페이스를 통합하는 조작 행위별 인터페이스의 최적 형태에 대한 검증 없이 자체 제작된 인터페이스를 사용함으로 인터페이스를 제작하는 디자이너의 혼란이 야기되며 이런 혼란은 유저의 불편으로 이어지고 있다. 게다가 캐릭터 커스터마이징에 관련한 연구는 유저 성향에 따른 캐릭터 선호도나 캐릭터 제작 방법에 관한 연구가 대다수를 차지하고 있어 캐릭터 커스터마이징에 관한 인터페이스 기본연구가 부족한 실정이다. 따라서 게임캐릭터 커스터마이징 인터페이스에 적합한 보편적 가이드라인의 개발로서 이러한 유저의 불편을 해결하고자 한다. 본 논문은 현재 캐릭터 커스터마이징을 지원하는 게임들의 인터페이스 현황을 조사, 분석하여 유형을 분류 하였다. 온라인 게임 순위 상위 50개의 게임 중 캐릭터 커스터마이징을 지원하는 게임 16종을 연구하였다. 분석결과 게임마다의 개성적인 부분은 세부 선택 요소의 제공에서 나타나는데, 세부 선택 요소는 어느 정도 분류가 가능하나 그 조작 인터페이스는 유형화되어 있지 않은 것으로 나타났다. 본 논문의 결과는 향후 게임의 캐릭터 커스터마이징 인터페이스 가이드라인 제작의 분석체계로써 사용될 것이다.

• 대한기계학회논문집A
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• 제29권2호
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• pp.176-187
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• 2005

This paper presents an evaluation of joint configurations of a robotic finger based on kinematic analysis. The evaluation is based on an assumption that the current control methods for the fingers require that the contact state specified by the motion planner be maintained during manipulation. Various finger-joint configurations have been evaluated for different contact motions. In the kinematic analysis, the surface of the manipulated object was represented by B-spline surface and the surface of the finger was represented by cylinders and a half ellipsoid. Three types of contact motion, namely, 1) pure rolling, 2) twist-roiling, and 3) slide-twist-rolling are assumed in this analysis. The finger-joint configuration best suited for manipulative motion is determined by the dimension of manipulation workspace. The evaluation has shown that the human-like fingers are suitable for maintaining twist-rolling and slide-twist-rolling but not for pure rolling. A finger with roll joint at its fingertip link, which is different from human fingers, proved to be better for pure rolling motion because it can accommodate sideway motions of the object. Several kinds of useful finger-joint configurations suited for manipulating objects by fingertip surface are proposed.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제14권3호
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• pp.195-209
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• 2010

Utilizing a structure of operations known as Dissection-Motion-Operations (DMO), a set of mathematics propositions or area-formulas in school mathematics will be introduced through shape-to-shape transforms. The underlying theme for DMO is problem-solving through visual reasoning and proving manipulatively or electronically vs. rote learning and memorization. Visual reasoning is the focus here where two operations that constitute DMO are utilized. One operation is known as Dissection (or Decomposition) operation that operates on a given region in 2D or 3D and dissects it into a number of subregions. The second operation is known as Motion (or Composition) operation applied on the resultant sub-regions to form a distinct area (or volume)-equivalent region. In 2D for example, DMO can transform a given polygon into a variety of new and distinct polygons each of which is area-equivalent to the original polygon (cf [Rahim, M. H. & Sawada, D. (1986). Revitalizing school geometry through Dissection-Motion Operations. Sch. Sci. Math. 86(3), 235-246] and [Rahim, M. H. & Sawada, D. (1990). The duality of qualitative and quantitative knowing in school geometry, International Journal of Mathematical Education in Science and Technology 21(2), 303-308]).