• Title/Summary/Keyword: side of angle

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Analysis on Upper Extremity of Hemiplegic Stroke Patients Using Bioelectrical Impedance (바이오 임피던스 분석을 이용한 뇌졸중 편마비환자의 상지 분석)

  • Yoo, Chan-Uk;Park, Ju-Hyung
    • The Journal of the Korea Contents Association
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    • v.17 no.10
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    • pp.94-101
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    • 2017
  • This study is to compare and analyze the bioelectrical impedance values on the upper extremity (affected and non-affected side) in hemiplegic stroke patients. Experimental subjects were 24 stroke patients with hemiplegia undergoing stroke rehabilitation between October to November, 2015. Prediction marker, resistance, reactance, and phase angle were measured in the upper extremity (affected and non-affected side) of hemiplegic stroke patients, using MultiScan 5000, and then they were expressed as quantified values. The affected and non-affected side of upper extremity in stroke patients with hemiplegia exhibited significant differences in prediction marker, reactance, and phase angle (p<0.05). There were significant differences in the impedance values at the affected and non-affected side of hemiplegic stroke patients. Thus, the possibility of evaluating stroke patients undergoing clinical rehabilitation therapy was suggested.

Evaluation of Articular Eminence Morphology in Patients with Spontaneous Temporomandibular Joint Dislocation Using Cone Beam Computed Tomography

  • Kim, Ji Hoo;Park, Hyun-Jeong;Seo, Yo-Seob;Ryu, Ji-Won;Ahn, Jong-Mo
    • Journal of Oral Medicine and Pain
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    • v.47 no.1
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    • pp.27-37
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    • 2022
  • Purpose: This study aimed to broaden our understanding of the predisposing factor and treatment of dislocation by analyzing and evaluating the morphology of the articular eminence (AE) in subjects with temporomandibular joint (TMJ) dislocation using cone beam computed tomography (CBCT). Methods: The subjects were divided into two groups: dislocation (31 subjects) and control (32 subjects). CBCT was used to examine 126 TMJs in 63 subjects (26 males, 37 females). The height, width, and posterior slope of the AE were measured in the parasagittal plane. The posterior slope was measured using the "top-roof line angle (TR angle)" method and the "best-fit line angle (BF angle)" method. The AE on the left side (AEL) and the AE on the right side (AER) of the subjects in the dislocation group were separately analyzed and compared with the control group after taking measurements. The average value of both sides was used when comparing with subjects with bilateral dislocation. Results: Dislocations were more frequent in females (67.7%) than in males (32.3%). The dislocation group showed a gentler TR angle than the control group in the AER and in the average of AE on the both sides (AEB). The same group also showed a wider AE in the AEL and the AER (p<0.05). In subjects with unilateral dislocation, the width of the AE with dislocation was narrower and the TR angle and BF angle was steeper than the other side without dislocation (p<0.05). Conclusions: In subjects with unilateral TMJ dislocation, the posterior slope of the AE is steeper, and the width is narrower at the site of dislocation compared to the site without dislocation. However, in subjects with bilateral TMJ dislocation, AEB were wider, and the mean value of the posterior slope of AEB was gentler than that of the control group.

Optical Characteristics of Sheetless LCD Backlight Using Micro Reverse-pyramid Array (Micro Reverse-pyramid Array를 이용한 일체형 Sheetless LCD Backlight의 광학적 특성)

  • Jeon, Hwa Jun;Lim, Gyo Sung;Gwag, Jin Seog;Kwon, Jin Hyuk
    • Korean Journal of Optics and Photonics
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    • v.23 no.3
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    • pp.119-123
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    • 2012
  • The structure of an LCD backlight unit (BLU) was simplified by installing a micro reverse-pyramid array (MRPA) or a micro reverse-cone array (MRCA) on the top surface of the light guide panel (LGP) in order to eliminate the conventional diffuser sheet and the prism sheet. The optimum conditions of the MRPA and the MRCA in the new light guide panel were obtained through optical simulation. The change of the luminance and view angle that depend on the side angle, the height, and the length at the top of the MRPA and MRCA were studied. The optimized side angle and the view angle of the MRPA and MRCA were 59 and 57 degrees for the side angles and 68 and 64 degrees for the view angles, respectively.

Robust Ship Wake Search Method in the Target Evasion Environment (회피 기동에 강인한 수상 항적 탐색 방법)

  • Ku, Bon-Hwa;Lee, Young-Hyun;Pak, Jung-Min;Chung, Suk-Moon;Hong, Woo-Young;Kim, Woo-Shik;Lim, Myo-Taeg;Ko, Han-Seok
    • Journal of the Korea Institute of Military Science and Technology
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    • v.12 no.1
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    • pp.8-17
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    • 2009
  • This paper proposes robust ship wake search method in the target evasion environment. Moving surface ships generate a long trailing wake in the rear of a surface ship. Wake homing torpedo sensing this wake can detect the surface target and engage it automatically. In wake homing torpedo, wake search method is important element to maximize effectiveness of wake homing torpedo. This paper proposes one-side, two-side and centering mode according to passing wake boundary scenarios. Also, wake deflection angle is deduced by using the principle of deflection angle of acoustic torpedo. The representative experimental results using monte-carlo simulation demonstrate that the searching method using one-side mode is superior to two-side and centering mode in the target evasion environment.

Characteristics of the Body Shape of Korean Woman Farmers by Crops (주 재배 작목별 한국 여성 농업인 체형 특성)

  • Baek, Yoon-Jeong;Lee, Kyung-Suk
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.10
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    • pp.1584-1594
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    • 2008
  • This study was to research the characteristics of the body shape of Korean woman farmers by the major crops. Four hundred ninety-five Korean woman farmers from 9 different area such as Kumi, Damyang, Iksan, Injae, Chungju, Choongju, Haman, Whasung, and Whasoon volunteered for this study. Their major crops were the rice, the pepper, the water melon, the strawberry, the wild rocambole, the sweet persimmon, the grapes, the mushroom, and the chrysanthemums. Twelve body angles were measured from archived the somatotype photographs of the front, the side, and the back. Questionnaires of SF-36 and the farmer's symptom, and the farm-work related movements were surveyed. The results were as follows; 1. Farmers had lower health levels in physical role limit, pain, vitality, and physical function than other occupational workers. 2. Most farmers acted the high-risk ergonomics motions when they worked in the farm. 3. There were significantly different on the both shoulder angles, the hip tangential line slope, the hip breadth angel, in frontal ankle-knee angle, the bending back angle, the dropping breast slope, the abdominis media angle, under the abdominis media angle, the glutea angle, under the glutea angle, and the sideward knee angle(p<.05). 4. Farmers cultivating the low plants such as the water melon, the strawberry, and the wild rocambole showed more banded vertebralis and side knee angles. Farmers cultivating the red pepper showed the dropping the left shoulder and O shape legs. Farmers cultivating the fruit trees such as the sweet persimmon and the grapes showed the less banded side knee angles than other farmer groups. 5. On comparing the same age, farmers showed the older's body shape in earlier and much more than the old living in the city.

A Study on the Side Collision Accident Reconstruction Using Database of Crush Test of Model Cars (모형자동차 충돌시험의 데이터베이스를 이용한 측면 충돌사고 재구성)

  • Sohn, Jeong-Hyun;Park, Seok-Cheon;Kim, Kwang-Suk
    • Transactions of the Korean Society of Automotive Engineers
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    • v.17 no.2
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    • pp.49-56
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    • 2009
  • In this study, a side collision accident reconstruction using database based on the deformed shape information from the collision test using model cars is suggested. A deformation index and angle index related to the deformed shape is developed to set the database for the collision accident reconstruction algorithm. Two small size RC cars are developed to carry out the side collision test. Several side collision tests according to the velocity and collision angles are performed for establishing the side collision database. A high speed camera with 1000fps is used to capture the motion of the car. A side collision accident reconstruction algorithm is developed and applied to find the collision conditions before the accident occurs. Two collision cases are tested to validate the database and the algorithm. The results obtained by the reconstruction algorithm show good match with original conditions with regard to the velocity and angle.

The Study on the Cutting Behavior of Super Duralumin(A2024-T3) (초듀랄류민(A2024-T3)의 절삭거동에 관한 연구)

  • Jun, Tae-Ok;Park, Heung-Sik;Ye, Guoo-Hyeon
    • Journal of the Korean Society for Precision Engineering
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    • v.9 no.4
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    • pp.147-153
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    • 1992
  • This study was undertaken to investigate the cutting behaviour of super duralumin (A2024-T3) with sintered carbide tool(P20). The cutting test was carried out under different conditions such as cutting speed, cutting depth and rake angle, etc. The specific cutting force Kc and Kt of vertical and radial forces decreases as cutting speed increases, especially the decrease rate of Kt becomes larger than of Kc as cutting speed increases. Kc and Kt in small cutting depth are much affected by work-hardening of surface layer. The chip width and shear angle become layer as cutting depth increases, especially chip width at feed of 0.1mm almost approaches cutting width. Relation between the friction coefficient of chip side and tool rake angle side can make the modelization studying the built-up edge size. The shear angle model equation of super duralumin generally agree with theory of Ernst-Merchant.

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Liquid crystal alignment effects by imidization methods of the polyimide on the polymer with side chain. (측쇄기를 가진 폴리머의 폴리이미드 소성 방법에 따른 액정 배향 효과)

  • Seo, Dae-Shik;Kim, Hyung-Kyu
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.04a
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    • pp.177-180
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    • 2000
  • In this study, we investigated the pretilt angle generation and liquid crystal (LC) alignment by ultraviolet (UV) exposure during imidization of polyimide on the polymer with side chain. The generated pretilt angle of nematic (N) LC using in-situ photo-alignment method was smaller than that of the conventional UV photo-alignment method. Also, the generated pretilt angle of NLC tends to increase by annealing.

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Asymmetric Vortices around a Body at High Angle of Attack Subsonic Flow (아음속 유동하의 고 받음각 물체 주위의 비대칭 와류 특성 연구)

  • Park, Mee-Young;Kim, Wan-Sub;Lee, Jae-Woo;Park, Soo-Hyung
    • 한국전산유체공학회:학술대회논문집
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    • 2008.03b
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    • pp.33-38
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    • 2008
  • Numerical investigation of asymmetric vortices at high angles of attack subsonic flow is performed using three-dimensional Navier-Stokes equations. A small bump has been carefully selected and attached near the nose of an ogive cylinder to simulate symmetric vortices. Selected bump shape does develop asymmetric vortices and is verified using Lamont's experimental results. By changing the angle of attack, Reynolds numbers, and Mach numbers, the characteristics of asymmetric vortices are observed. The angle of attack which contributes significantly to the generation of asymmetric vortices are over 30 degrees. By increasing Mach number and Reynolds number asymmetric vortices, hence the side forces show decreasing trend..

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Practical theory and ocean survey application of side scan sonar (Side Scan Sonar 실무이론과 현장조사에 적용)

  • Kim, Seong-Ryul;Lee, Yong-Kuk;Jung, Baek-Hun
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2006.06a
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    • pp.201-204
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    • 2006
  • In the side scan sonar method, use is made of the back-scattering, at low grazing angles of incidence to the seabed, of relatively high-frequency acoustic waves radiated in a fan-shaped beam from a transducer contained in a towed body. The fan beam is oriented so that the wider angle is in the vertical plane (scan range) and the narrower angle in the horizontal plane (beam width) with the axis of the beam normal to the ship track. The display of the returns is usually realized as a series of closely spaced intensity-modulated lines on a paper recorder or computer screen display. In this way a two-dimensional picture of the seabed is build up.

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