• Title/Summary/Keyword: Right-handed

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Upper Body Somatotypes of the Left-Handed and the Right-Handed - Focusing on male and female collegians in their 20s - (왼손 및 오른손 사용자(使用者)의 상반신체형(上半身體型)에 관한 비교연구(比較硏究) - 20대(代) 남녀(男女) 대학생(大學生)을 중심(中心)으로 -)

  • Shim, Boo-Ja
    • Journal of Fashion Business
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    • v.7 no.4
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    • pp.78-92
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    • 2003
  • The upper-body characteristics of the right-handed and the left-handed are examined and compared through 1-dimensional measurement and 2-dimensional measurement. The results were as follows: 1. According to 1-dimensional measurement results, the clearest differences were seen in girth items rather than height or length items. In particular, hand girth, lower arm girth, and upper arm girth were bigger on the left side in the left-handed group and the right side in the right-handed group. This is thought to be relevant to the arm muscles frequently used. 2. According to 2-dimensional measurement results, significant differences appeared in the females of the left-handed group: shoulder point among width items. In the right-handed group, some differences of significance were shown in females (shoulder point, rear armpit point, and B.P. point among width items) and males (front neck point among extreme vertical distance items). In summary, the body type characteristics of the left-handed and the right-handed reveal great differences in the items related to arm length and arm girth. In other words, the sleeve and shoulder patterns production based on the right-handed don't rightly reflect the somatotype characteristics of the left-handed. In addition, in the cases of athletes, laborers, and the disabled who frequently use particular muscles or parts of the body, this sort of research in the patterns is consistently needed in order to reflect the size differences in girth items in upper body.

Tunable Bandstop Filter with Combined Right/Left-Handed Transmission Lines (Right/Left-Handed 전송 선로를 결합한 가변 대역 저지 필터)

  • Sung, Gyu-Je;Kim, Ell-Kou;Kim, Young;Yoon, Young-Chul
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.19 no.10
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    • pp.1122-1128
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    • 2008
  • A novel tunable bandstop filter was proposed. It is composed of a right-handed transmission line, which has lowpass characteristics, and a left-handed transmission line which has highpass characteristics. Dispersion relations for the unit cells of RHTL and LHTL were derived by the method of ABCD parameter analysis. Varactor diodes and chip inductors were used to make the unit cells of RHTL and LHTL. A tunable bandstop filter was designed and fabricated by the parallel connection of RHTL and LHTL. The measured results of the proposed tunable bandstop filter are agreed well with the simulated results.

Study of a Dual-band RF switch using a Composite Right/Left Handed Transmission Line and PIN Diode (Composite Right/Left Handed 전송선과 PIN 다이오드를 이용한 이중대역 RF 스위치 연구)

  • Park, Chang-Hyun;Choi, Byung-Ha;Shin, Dong-Ryul;Seong, Won-Mo
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.45 no.11
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    • pp.55-60
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    • 2008
  • This paper proposed a dual-band RF switch using a Composite Right/Left Handed transmission line(CRLH TL) and PIN diode. RF switch is usually consist of $\lambda/4$ Right Handed transmission line(RH TL) and PIN diode. The dual band characteristics of RF switch was achieved by using CRLH transmission line instead of RH transmission line. CRLH Open-Stub was designed for resolve to reduction of isolation due to Package Inductance of PIN diode. The proposed RF switch was designed at GSM and DCS frequency-band. The measurement results showed a good agreement with theoretical result.

Surveying and the Ergonomic Analysis of Hand Dominance (주손(Hand Dominance)에 관한 조사 및 인간공학적 분석)

  • Jung, Hwa S.;Jung, Hyung-shik
    • Journal of Korean Institute of Industrial Engineers
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    • v.30 no.2
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    • pp.165-174
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    • 2004
  • It is known that one out of every ten people walking down the street is left-handed. In daily living, left-handed people come across hardwares and facilities that were designed for right-handed people. Most tools, utensils, office equipment, home appliances, clothes, medical instruments, sporting goods, weapons, and public facilities are made for the right-handed person. Many left-handed people thus have trouble with living in our environments. In this study, 1,933 Korean male and female subjects aging from 10 to 82 were selected to investigate the various statistics about hand dominance and their employment characteristics of preferred hand in handling diverse products and facilities. The statistics showed that 5.6% were left-handed and 7.6% were ambidexter. There were strong tendency that left-handed people use more left hand when take action that force is required than when take exquisite action. Ambidexter and right-handed people use more right hand when they take exquisite action is required than when take action that force is required. It was found from these results that people use their hands differently depending on the hand dominance when they handle things, hence this should be considered in designing hand control devices.

Design and Analysis of 8-Port Power Divider for Using RLH-TL(Right/Left-Handed Transmission Line) (RLH-TL (Right/left-handed transmission line)을 이용한 8 port 전력 분배기 설계 및 분석)

  • Kim, Hyung-Mi;Lee, Bom-Son
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.29-32
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    • 2005
  • In this paper, we present the 8 port in-phase power divider using right/left-handed transmission line. The proposed power divider splits the input power into 8 port regardless of the electrical length of transmission lines. Its size is much smaller than the conventional one. As the length of the transmission line in the power divider decreases, its bandwidth becomes wider.

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A Design of Frequency Multipliers Using λ/4 Open Composite Right/Left Handed Stub and Left Handed Transmission Line (λ/4 개방형 CRLH 스터브와 LH 전송 선로를 이용한 주파수 체배기 설계)

  • Seo, Su-Jin;Park, Sang-Keun;Choi, Heung-Jae;Jeong, Yong-Chae;Lim, Jong-Sik
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.18 no.11
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    • pp.1271-1278
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    • 2007
  • A novel frequency multiplier using composite right/left-handed transmission line is proposed. The left-handed transmission line in the proposed frequency multiplier suppresses the fundamental component($f_0$), while the composite right/left-handed ${\lambda}/4$ open stub diminishes unwanted harmonics. Due to the combination of the left-handed transmission line and composite right/left-handed ${\lambda}/4$ open stub, the only desirable multiplied frequency component such as 3 $f_0$ and 4 $f_0$ are obtained at the output port excellently. For the example of the proposed design, frequency multipliers are designed at 1 GHz of $f_0$ and measured. The measured output power of 3 $f_0$ and 4 $f_0$ is -5.67 dBm and -6.43 dBm, respectively, when the fundamental input power was 0 dBm.

A Comparison of Linguistic and Spatial Ability in Left- and Right-handed Young Children (왼손잡이 유아와 오른손잡이 유아의 언어능력 및 공간능력의 비교)

  • Lee, Jeong-Hwa;Han, Hee-Seung;Lee, Eun-Suk
    • Korean Journal of Human Ecology
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    • v.19 no.4
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    • pp.601-612
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    • 2010
  • It is widely known that language functions in our brains are lateralized to the left hemisphere and spatial recognition functions are lateralized to the right hemisphere. It is also known that handedness is closely related to the lateralization of brain functions. However, at what point in the brain‘s development the lateralization of brain functions takesplace is still disputed. This study sought to find differences in linguistic and spatial abilities between left-handed and right-handed children, and provide objective data on the relationship between the handedness and the brain lateralization. 19 left-handed children and 20 right-handed children aged 5 were chosen through questionnaire for this study and the K-WPPSI simple intelligence test was used to check the homogeneity of two groups. The results showed that the differences inlinguistic and spatial ability between left and right-handed children were not statistically significant.

Homogeneous Dual Composite Right/Left-Handed Metamaterial Using Subwavelength Defected Ground Structure(DGS) (Subwavelength 결함접지구조(defected grounded structure : DGS)를 이용한 Homogeneous Dual Composite Right/Left-Handed 메타물질 구현)

  • Park, Woo-Young;Lim, Sung-Joon
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.11
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    • pp.2242-2246
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    • 2009
  • In this paper, a homogeneous dual composite right/left-handed (D-CRLH) transmission line (TL) is proposed by using a defected ground structure (DGS) on the ground plane. In order to satisfy a homogeneity condition of metamaterial, a subwavelength unit cell is designed by way of a spiral DGS and a meander stub. From a dispersion diagram, it is expected that the frequency bands for the left-handed (LH) property is 3.5 - 4.4 GHz. At 3.8 GHz in the LH band, backward propagating phenomenon is observed from full-wave analysis. The experimental results show that the proposed TL has a stop-band in 1.75 - 3.6 GHz.

Dual-Band Negative Group Delay Circuit Using λ/4 Composite Right/Left-Handed Short Stubs

  • Choi, Heung-Jae;Mun, Tae-Su;Jeong, Yong-Chae;Lim, Jong-Sik;Eom, Soon-Young;Jung, Young-Bae
    • Journal of electromagnetic engineering and science
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    • v.11 no.2
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    • pp.76-82
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    • 2011
  • In this paper, a novel design for a dual-band negative group delay circuit (NGDC) is proposed. Composite right/left-handed (CRLH) ${\lambda}/4$ short stubs are employed as a dual-band resonator. A CRLH ${\lambda}/4$ short stub is composed of a typical transmission line element as the right-handed component and a high-pass lumped element section as the left-handed component. It is possible to simultaneously obtain open impedances at two separate frequencies by the combination of distinctive phase responses of the right/left-handed components. Negative group delay (NGD) can be obtained at two frequencies by using dual-band characteristics of the CRLH stub. In order to achieve a bandwidth extension, the proposed structure consists of a two-stage dual-band NGDC with different center frequencies connected in a cascade. According to the experiment performed, with wide-band code division multiple access (WCDMA) and worldwide interoperability for microwave access (WiMAX), NGDs of $-3.0{\pm}0.4$ ns and $-3.1{\pm}0.5$ ns are obtained at 2.12~2.16 GHz and 3.46~3.54 GHz, respectively.

An experimental study on the dynamic balance when obscuring vision in half of the both eye (편측 시야 차단이 동적균형에 미치는 영향에 관한연구)

  • Heo, Ji-Young;Kim, Yong-Kwon;Kim, Young-Hee
    • Journal of Korean Physical Therapy Science
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    • v.8 no.2
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    • pp.1081-1090
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    • 2001
  • This study was conducted to find out effect of dynamic balance performance in normal adult when obscuring vision in half of the both eye and to prepare the basic data treatment of brain damage patient with visual field deficit. The subject for this study included 40 healthy right-handed and 20 left-handed were dynamic balance performance when obscuring vision in half of the both eye. who age from 20 to 30 years in normal adult without neurosurgical orthopedic, performance balance disability or other medical disorders. Of these individuals 20 right-handed and 20 left-handed were executed dynamic balance performance when obscuring vision in half of the both eye. individuals of right, left-handed were executed dynamic performance when obscuring vision in half of the both eye measure with a Balance Performance Monitor (BPM) Data print Software Version 5.3. In other to determine the statitsical significance of the result, instrumentation was used to t-test, chisquare of the SAS(Strategic Application Software) The result of the study were that: 1) Significant differences in LOS were found right-handed and left-handed subject when dynamic performance without obscuring vision and obscuring vision(p<0.05). 2) Significant differences in LOS were founded left-handed when dynamic performance were executed obscuring vision and without obscuring vision(p<0.05). 3) Significant differences in LOS were founded right-handed when dynamic performance were executed obscuring vision and without obscuring vision(p<0.05).

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