• Title, Summary, Keyword: vertical articulation

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Teaching-Learning Methods articulated with mathematics in middle school (중학 수학의 연계적인 교수 학습 방법에 관한 연구 - 함수 영역을 중심으로)

  • 장이채;김태균;정인철;송주현
    • Journal of the Korean School Mathematics Society
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    • v.6 no.2
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    • pp.21-37
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    • 2003
  • In this paper, we improved, compared and analyzed the articulation of school mathematics. We also tried to form the theoretical basis of school mathematics by classifying and considering the articulation into vertical articulation and horizontal articulation depending on the meaning, and give an actual help. The articulation of school mathematics until now has been focused on a study of vertical articulation according to the macroscopic characteristic of mathematics, but now a study of the horizontal articulation as well as the vertical articulation should be done in consideration of the micro characteristics of mathematics and various realities of life by modifying a syllabus of the function unit and by using internet homepage. Thus, we structurally divided the articulation into vertical articulation and horizontal articulation, analyzed mathematical activities and presented actual models of each representative learning activity for smooth teaching in schools through the function unit.

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Distinct Segmental Implementations in English and Spanish Prosody

  • Lee, Joo-Kyeong
    • Speech Sciences
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    • v.11 no.4
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    • pp.199-206
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    • 2004
  • This paper attempts to provide a substantial explanation of different prosodic implementations on segments in English and Spanish, arguing that the phonetic modification invoked by prosody may effectively reflect phonological structure. In English, a high front vowel in accented syllables is acoustically realized as higher F1 and F2 frequencies than in unaccented syllables, due to its more peripheral and sonorous articulation (Harrington et al. 1999). In this paper, an acoustic experiment was conducted to see if such a manner of segmental modification invoked by prosody in English extends to other languages such as Spanish. Results show that relatively more prominent syllables entail higher F1 values as a result of their more sonorous articulation in Spanish, but either front or back vowel does not show a higher F2 or a lower F2 frequency. This is interpreted as an indication that a prosodically prominent syllable entails its vocalic enhancement in both horizontal and vertical dimensions of articulation in English. In Spanish, however, only the vertical dimensional articulation is maximized, resulting in a higher F1. I suggest that this difference may be attributed to the different phonological structures of vowels in English and Spanish, and that sonority expansion alone would be sufficient in the articulation of prosodic prominence as long as the phonological distinction of vowels is well retained.

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The Application of Articulation Systems based on the Number of Carbody Modules of the Low-Floor Tram (저상트램 모듈 수량에 따른 아티큘레이션 장치의 적용 검토)

  • Lee, Jae-Ik;Jang, Sung-Chan;Eom, Kyong;Lee, Joung-Yul;Kim, Kuk-Jin
    • Proceedings of the KSR Conference
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    • pp.842-848
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    • 2011
  • The low-floor tram is a kind of railway vehicles which is operated on the street way track. For reducing the radius of curvature of the track, the tram consists of some carbody modules, and the articulation systems connect and support these carbody modules. The kind of articulation systems would be the hinge type and the pitching type. The hinge type articulation could allow only the yawing motion of the carbody modules, and the pitching type articulation could allow the pitching and yawing motions of the carbody modules simultaneously. With these function of the articulation systems, the tram could be operated on the horizontal and vertical curvature of the track. The number of each type of articulation could be decided with the number of carbody modules, and the manufacturer would decided the position of each type of the articulation in the view of the stability of carbody modules in the operation condition.

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International Comparison Study on the Articulation of the Science Curriculum: Focus on the Concept of Photosynthesis (과학과 교육과정의 연계성 국제 비교: 광합성 개념 중심으로)

  • Lee, Hyonyong;Yeo, Chaeyeong
    • Journal of The Korean Association For Science Education
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    • v.35 no.5
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    • pp.805-815
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    • 2015
  • The Korean education curriculum is making efforts to improve education to foster competencies that the future society demands through the 2007 and 2009 revised curriculum. The revised curricula focus on enhanced articulation for the quality curriculum. In this study, the curriculum is analyzed for vertical and horizontal articulation. In addition, the study found a problem in Korea's curriculum through international comparison and sought improvement. Furthermore, the study compared internationally articulation of the concept of photosynthesis, of which the results are as follows. First, our science curriculum focuses on vertical articulation and has relatively neglected the problem of horizontal articulation. To compensate for this problem, curriculum design should introduce aspects of 'nature' and 'environment' and should consider the interests and concerns of students, as countries with high horizontal articulation do. Second, the actual education field has a problem with the a lack of continuity and sequence because of concentration of concept in a specific grade or simply repeating the concept across multiple grades. These results have led to alternative proposals that should arrange basis of concept configuration such as 'Big Idea' and should establish the adoption of 'systems' frequently appearing in the other curricula. Finally, there may be mentioned a lack of research on students' learning progression, which can be a common standard of horizontal and vertical articulation. Research on learning progression has been a trend overseas, but there exists no study to fit Korea's situation, so education fields need to conduct the appropriate research on learning progression as part of the commitment to high-quality curriculum.

Vertical Articulation in Chemical Reaction (화학반응에 대한 수직적 연계성)

  • ImKyu Park;JongKeun Park;SeongBae Moon
    • Journal of the Korean Chemical Society
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    • v.47 no.4
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    • pp.376-390
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    • 2003
  • The contents of chemical reaction in the science textbooks, used by starting from elementary school to college level, were investigated how much closely connected with them. For this purpose, nineteen subjects of chemistry contents were selected and the articulation analysis, classified into 5 criteria, was carried out. The results indicated that the articulation from elementary school to middle school looked quite acceptable, but there was a big gap from middle school to high school and the articulation from high school to college exhibited a big overlap and gap. Finally, the flow map of chemical reaction was suggested.

The Analysis of the Effect of .Wind Load on the Structural Stability of an Articulation type Container Crane (풍하중이 관절형 붐을 가진 컨테이너 크레인의 구조 안정성에 미치는 영향 분석)

  • Lee Jung-Myung;Lee Seong-Wook;Han Dong-Seop;Han Geun-Jo
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • pp.235-240
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    • 2005
  • Articulation type container cranes are the boom forms an inverted L shape when raise. The inner boom section is nearly vertical when raise and the outer boom section is nearly horizontal. Articulation type container cranes were developed as a lower height crane to meet aircraft clearance requirements. Because the height of an Articulation type container crane is about 70m, the crane is subjected to the effect of Wind load. Therefore, the problem on the effect of Wind load is receiving carefully study. The researches for the effect of wind load on the structural stability of a conventional container crane are conducted. In this study, we carried out the investigation for an articulation type container crane. When a wind load is applied to a container crane, we analyzed the reaction force distribution at each supporting point of a crane with respect to a wind load direction and the effect of the change of the machinery house location on the structural stability rf a crane by carrying out Finite Element Analysis.

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C-to-V coarticulation in horizontal and vertical dimensions and its implications for phonology

  • Lee, Joo-Kyeong
    • Speech Sciences
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    • v.7 no.4
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    • pp.107-121
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    • 2000
  • In this paper, I investigate the acoustic correlates of a vowel's coarticulatory dynamics manifested in preceding and following consonants along two dimensions of the vocal tract: place of articulation and degree of constriction. Two dimensional coarticulation is not necessarily executed either concomitantly or proportionally, and the modification induced by coarticulation with a vowel in CVC structures is merely restricted to the CV portion; that is, the prevocalic consonant is modified solely in its constriction location. This is consistent with the observation that C-to-V place assimilation does not accompany consonant lenition in phonology, which suggests that phonetic nature is effectively reflected in phonological patterns.

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Development and Application of an Analysis Taxonomy for Curricular Articulation in Mathematics and Science (수학및 과학 교과내용의 연계성 분석을 위한 준거모형 설정과 예시적 분석)

  • Song, Soon-Hi;Lee, Young-Ha;Lee, Jong-Rock;Kim, Sung-Won;Kang, Soon-Hee;Park, Jong-Yoon;Kang, Soon-Ja;Kim, Kyu-Han;Yoo, Kye-Hwa
    • Journal of The Korean Association For Science Education
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    • v.11 no.2
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    • pp.119-131
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    • 1991
  • A taxonomy which can be used conveniently for analyzing the vertical articulation of mathematics and science textbooks has been developed. It includes two types sanalysis criterion: one is based on the detail of description and the other is based on the depth of contents in terms of their sequence. These two criterion elements are combined to form groups of 'overlap', 'development' and 'gap' to represent the extent of articulation. Examples of applying the taxonomy are illustrated for the concepts of gemetrical area in mathematics and potential energy in science.

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Experimental Study on the Relation Between the Longitudinal Articulation Part of a Spacer Damper and Subspan Oscillations (스페이서댐퍼 클램프의 선로방향 관절부와 서브스판진동과의 관계 실험적 고찰)

  • Lee, Hyung-Kwon
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.58 no.4
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    • pp.447-450
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    • 2009
  • In order to protect conductors from oscillations or vibrations due to winds, spacer dampers are installed on overhead transmission lines. Generally the spacer damper clamp can move slightly according to oscillation directions, namely in longitudinal, vertical & horizontal directions. This is for reducing fatigue phenomena of the conductor. But the high longitudinal- displacement of the clamp raises a doubt for its necessity. Then this paper carried out oscillation tests by using 4 bundle test lines, to know the relation between longitudinal displacement and oscillation. and suggests design necessity of the longitudinal articulation part for spacer damper clamps.

Comparative Analysis of Open- Spike between Excellent and Non-excellent Players in Volleyball (배구 우수선수와 비우수선수간의 오픈 스파이크 동작의 비교 분석)

  • Kim, Chang-Bum;Kim, Young-Suk;Shin, Jun-Yong
    • Korean Journal of Sport Biomechanics
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    • v.13 no.3
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    • pp.253-264
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    • 2003
  • This study aims at finding the structure of spike technique by analysing comparatively the spike action by excellent and by non-excellent players throughout the section from a flying jump to the time of landing for the correct analysis of spike action and tries to help athletes and coaches to execute a scientific training. For the objected person of this study, six of H College athletes three of excellent athletes and three of non-excellent athletes, presently registered as athlete with the Korea Volleyball federation) were chosen, and the factors of analysis were analysed upon performance time of action by section, human body centered displacement, change of articulation angle, speed change of articulation of the upper limbs, uniformity of the articulation of the upper limbs upon impact, etc. The conclusion of this study is as follow: 1. In the time required for taking action, it shows to take $1.067{\pm}0.057$ seconds for the group of excellent athletes and $1.034{\pm}0.033$ seconds for the group of non-excellent athletes. Although there was not big difference between two groups in the performance time of action, it showed that the group of excellent athletes takes longer compared to the group of non-excellent athletes. And it was found by the result of this study that the group of excellent athletes stays longer in the duration of flight. 2. In the displacements of horizontal movement and vertical movement, it was found that the group of excellent athletes have moved more than the group of non-excellent athletes in the horizontal movement of the center of human body 3. In the angles of wrist and knee, it was found that the excellent athletes have shown little than the non-excellent athletes in the entire sections, but that in the angle of elbow, the non-excellent athletes have shown bigger than the excellent athletes.. 4. In the speed of the articulation of the upper limbs upon impact, it was found that the group of excellent athletes have shown bigger than the group of non-excellent athletes, and that in the maximum value of the articulation of the upper limbs, the maximum value for the hand was indicated upon impact and that forearm and upper arm have shown the maximum value just before the impact. 5. In the uniformity of articulation of the upper limbs at the time of impact, the group of excellent athletes showed bigger than the group of non-excellent athletes in all the articulations.