• Title/Summary/Keyword: HAND FUNCTIONS

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Uniqueness and Value-sharing of Entire Functions

  • Li, Xiaojuan;Meng, Chao
    • Kyungpook Mathematical Journal
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    • v.49 no.4
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    • pp.675-682
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    • 2009
  • In this paper, we study the uniqueness problems on entire functions sharing one value. We improve and generalize some previous results of Zhang and Lin [11]. On the one hand, we consider the case for some more general differential polynomials $[f^nP(f)]^{(k)}$ where $P({\omega})$ is a polynomial; on the other hand, we relax the nature of sharing value from CM to IM.

Design and Control of a Dexterous Multi-fingered Robot Hand

  • Chung, Woo-Jin;Lee, Hyung-Jin;Kim, Mun-Sang;Lee, Chong-Won;Kang, Bong-Soo
    • 제어로봇시스템학회:학술대회논문집
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    • 2001.10a
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    • pp.83.1-83
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    • 2001
  • This paper presents a three-fingered robot hand, called the KIST hand, Which have one active joint and one passive joint. The thumb is fixed on the palm, and the index and the middle take lateral motions symmetrically. A mechanical clutch and an embedded force sensor, attached on the distal link of the fingers, enable the KIST hand to perform human-like functions. A result of experiment shows reliable grasping performance of the hand which maintain stable grasp under disturbances.

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ON HERMITE-HADAMARD-TYPE INEQUALITIES FOR DIFFERENTIABLE QUASI-CONVEX FUNCTIONS ON THE CO-ORDINATES

  • Chen, Feixiang
    • Journal of applied mathematics & informatics
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    • v.32 no.3_4
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    • pp.303-314
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    • 2014
  • In this paper, a new lemma is established and several new inequalities for differentiable co-ordinated quasi-convex functions in two variables which are related to the left-hand side of Hermite-Hadamard type inequality for co-ordinated quasi-convex functions in two variables are obtained.

Development of Under-actuated Robotic Hand Mechanism for Self-adaptive Grip and Caging Grasp (형상적응형 파지와 케이징 파지가 가능한 부족구동 기반 로봇 의수 메커니즘 개발)

  • Sin, Minki;Cho, Jang Ho;Woo, Hyun Soo;Kim, Kiyoung
    • The Journal of Korea Robotics Society
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    • v.17 no.4
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    • pp.484-492
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    • 2022
  • This paper presents a simple and robust under-actuated robotic finger mechanism that enables self-adaptive grip, fingertip pinch, and caging grasp functions. In order to perform daily activities using hands, the fingers should be able to perform adaptive gripping and pinching motion, and the caging grasp function is required to realize natural gripping motions and improve grip reliability. However, general commercial prosthetic hands cannot implement all three functions because they use under-actuation mechanism and simple mechanical structure to achieve light-weight and high robustness characteristic. In this paper, new mechanism is proposed that maintains structural simplicity and implements all the three finger functions with simple one degree-of-freedom control through a combination of a four-bar linkage mechanism and a wire-driven mechanism. The basic structure and operating principle of the proposed finger mechanism were explained, and simulation and experiments using the prototype were conducted to verify the gripping performance of the proposed finger mechanism.

The Observation on the Five Vicera's Damaged due to Seven Emotion in the 『Lingshu·Benshen』 (『영추(靈樞)·본신(本神)』의 칠정상오장(七情傷五藏)에 대한 고찰(考察))

  • Bang, Jung-Kyun
    • The Journal of Korean Medical History
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    • v.18 no.2
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    • pp.55-62
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    • 2005
  • In "Lingshu Benshen". five vicera are damaged due to changes in emotion having qi flow opposite to five viscera. As a result, it suggests that mental and physical illness could develop. The content of this piece can be explained in relation to five elements but uniformly through qi's flow. The contents can be summarized as follows. 1. The Heart is fire among the five elements and mainly characterized with dispersing. The flow of its qi is characterized facing upward and outward. On the other hand, being afraid or thinking seriously is characterized by making qi to go downward and stop so that the flow of qi is mainly facing toward inward and downward, damaging the heart. 2. The spleen has the conveyance function and spreads qi. On the other hand, worry and emotion inhibit qi function, blocking qi, damaging the spleen. 3. The liver has dispelling and removing functions and the power of sending up. The qi flow goes toward upward and outward. On the other hand, sadness stagnates qi, preventing the flow of liver's qi, damaging the liver. As a result, work is not done accurately. Madness develops with heat accumulated with qi stagnation. When qi is not sending up, mentality is not clear, leading to forgetfulness. 4. The lung has astringent and sending down functions, lowering qi. On the other hand, happy and joyful emotions bring up qi, showing the opposite flow of qi compared with the lung, damaging the lung. 5. The kidney has closing and storing functions, making qi flow to downward and inward. On the other hand, being angry makes qi to go up. Excessive expression of anger damages the kidney. As a result, the yin function of kidney does not work properly, leading to forgetfulness.

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A Review of Hand Function (손 기능에 관한 고찰)

  • Lee, Sun-Myung
    • Journal of Korean Physical Therapy Science
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    • v.9 no.4
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    • pp.155-168
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    • 2002
  • The purpose of study to know hand function in order to prevent disability or handicap. The ability to perform precise refined movements of hand is an important human function. Improvement in object manipulation is common goal of therapist. The ability to manipulate an object in the hand is need for many functional tasks, including writing, handling coins, small objects and ADL skills. Therapists have commonly used hand grip and pinch strengths as baseline measures to evaluate hand function. The patterns of grasps are precision grasp, power grasp, hook grasp, spherical grasp, sylindrical grasp, disc grasp, pinch, three point pinch and tip pinch. And the motion of in-manipulation are finger to palm translation, palm to finger, shift, simple rotation and complex rotation. The hand function are include to evaluate of ROM, sensation, muscle strength of hand. It used to evaluate of decision of effect and suppose of disability and acceptance of vocation. Good evaluation is need to pretreatment and baseline of treatment and help to evaluate of effect on treatment.

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Physical therapy and Occupational therapy on the hand infections (수부 감염에 대한 물리치료와 작업치료)

  • Jung, Seok;Kim, Jeong-Ja
    • Journal of Korean Physical Therapy Science
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    • v.6 no.1
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    • pp.861-877
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    • 1999
  • The hand is a very specialized organ that functions to obtain information and to execute motor acts essential to human interaction with the environment. Loss of hand function through infections affects the mechanical tasks that the hand performs and psychological adjustments to their disability. Infection is a disastrous complication of hand injuries and adequacy of circulation is of greatest importance to prevention of infection. Careful debridement, incision, and adequate drainage and antibacterial treatment are of great importance. Optimal care of the infected hand demands that carefully surgical care, early postoperative exercises and other therapy. Hand rehabilitation has grown as a specialty area of both physical and occupational therapy. It is essential that the surgeon and therapist work together, and communicate freely-all of which generally require daily contact. Treating the psychological loss suffered by the patient with a hand infections is an integral part of the rehabilitation therapy as well. Treatment techniques, Whether thermal modalities or specifically designed exercises, are used as a bridge to reach a further goal of returning to functional performance.

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Educational Value of the Woodworking -The Handworks from the Viewpoint of Developing Manual Function- (목공의 교육적 가치에 대한 고찰 -수공노작교육 중심으로-)

  • Lee, Min-Gyoung;Kang, Ho-Yang
    • Journal of the Korea Furniture Society
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    • v.19 no.5
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    • pp.403-410
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    • 2008
  • This study is a background for developed woodworking educational program. To achieve the propose of this research, related to handwork to figure out the concept, changes and characteristics of handwork and the products of handwork. The areas of woodworking needs basic hand function of gripping and hooking, strong hands and stability of hand operation. Activities of this area can enhance the ability of controlling the strength of hand and the stability of hand operation. The use of both hands in woodworking promotes the coordination of both hands and handling ability. In the woodworking, diverse functions of hands are used with various tools. Each hand may be move differently, and the hand operation is elaborated. These features of woodworking help growing coordinations and hand function, and developing brain and creativeness.

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A study on Hand Injury in Industrial Complex Workers (공단 근로자의 수부 손상에 관한 연구)

  • Kim, Soo-Min;Gu, Kyung-Sook;Lee, Geun-Hee;Kang, Ho-Hyun;Hyung, In-Han;Sung, Kwang-Jun
    • Journal of Korean Physical Therapy Science
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    • v.6 no.1
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    • pp.905-913
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    • 1999
  • The hand is a part of the body which has various functions and a sophisticated structures bone, Joint, tendon, ligament and logical nerve organ are aggregated densely in the hand of anatomy its functions are delicate. The hand's functions are very important for doing ADL and a worker's As the hand is structure which is used often and commonly it is a site that can be easily damaged by a accident on work. This study was investigated and analyzed by the results from 238 workers who had hand injury and physical therapy from January, 1997 to June, 1998 at Shin-Pung, Jang-Lim industrial complex which is located in Pusan. 1. A hand injury most frequertly happened in worker in their 30's and 20's(66 case, 28%), second was 57 case(24%) their 40's. 2. Among workers suffering from injury, who had one or less than 2 years on the job, a injury most frequently occurred. 3. Scale of workers, A injury most frequently happend in a place where had workers from 10 to 50. 99 workers from that place were 42% of total. 4. Month of occurrence rate in March were the highest compared to other months 40 injury workers in march were 17% of the total. Second was July, and the least was April that injury appeared with 10 workers. (4.2% of the total) 1. Frocture was the most common lesion 82 workers had that lesion(34%) soft tissue rupture was 71 workers who were 30% of total in type of lesion. 2. Of the site of lesion multiple case was the most common in which 57 workers had that lesion it were 24% of the total. The next was the index finger site in which 44 workers were 19% of the total. The index finger was the most common mono-site that can be lesion 36 workers were the middle finger lesion workers who were 15% of the total. Of the joint lesion, PIP was the most in which 76 workers were 44% and in MC 27 workers were 15% of the total. 3. Interval of physical therapy 79 workers from one month to 2 months, was 33% of the total and 174 workers who had therapy below 3 months were 71% 4. Post injury of disablity of the site, phalangeous disability was the most in which 148 workers had that injury and they were 62% of the total of the grade of disability 110 workers who were 46% of the total state from less than 25% disability in hand-function and 59 patients who were 25% had no disability. There were 6 workers (3% of the total) who had over -75%-dibability in the hand-function.

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