• Title/Summary/Keyword: Hand-touch characteristics

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The Difference of Grip Strength, Upper Limb Dexterity, and Hand Function according to Light Touch and Thermal Sensory Stimulus (촉각과 온각 자극에 따른 악력, 상지 기민성, 그리고 손 기능의 차이)

  • Rhee, Hyeon-Sook;Kim, Sung-Joong;Yu, Jae-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.6
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    • pp.2644-2651
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    • 2011
  • The purpose of this study was to investigate difference between grip strength, upper limb dexterity, and hand function according to touch and heat sensory stimulus. Forty healthy men were recruited. After obtaining subjects characteristics, examined grip strength, upper limb dexterity, and hand function, then we made touch sensory input using soft brush and tried the test again. Next day, we made thermal input using hot pack and did retest, too. The result showed significant differences appeared on every variable in grip strength and upper limb dexterity test (p<.001), and significant differences appeared on every variable except lifting small objects in hand function (p<.01). In conclusion, sensory input is to increase grip strength, upper limb dexterity, and hand function. The thermal sensory input has a tendency to increase grip strength, upper limb dexterity, and hand function than that of touch sensory input in effect of stimulus classification. The application of proper stimulus helps to facilitate upper limb and hand function in rehabilitation and in industrial field. So it is necessary to try more tests of frequency and intensity of stimulus.

A Study on the Correlation between Sustainable Slow Design and Contemporary Fashion (지속 가능한 느린 디자인 특성과 현대 패션의 상관성에 관한 연구)

  • Chae, Hye-Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.4
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    • pp.531-542
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    • 2009
  • This study examines the correlation between the characteristics of sustainable slow design, The outcome derived from the pro-environmental consciousness in fashion design, and the trends of modern fashion design. The conclusion of this study is as follows. First, slow design for sustainability shows an environmental consciousness and stresses the ethical aspects of fashion design that take into account the wellbeing and sustainable development of human society. It also focuses on the continuos present in which the consistent pace of life endures, rather than pursuing speedy changes of fashion by titillating desire. Second, the five characteristics of slow design have been extracted from the analysis of the examples of fashion industry and other fashion-related areas. They are sustainability, recyclibility, handicraft, naturalness, and simplicity. Third, these characteristics of slow design have much to do with modern fashion genres. For instance, classical style fashions such as Chanel suit and Burberry coat have the same qualities of sustainability, while at the same time the Vintage fashion, which reinterprets the fashions from bygone eras in modern style, has the tendency of recyclibility, and the Hippie style, a resurrection of hand-touch spirit that emerged as a secondhand style expressionism resisting uniform mass production, has not only the quality of handicraft but also recyclibility.

A Study on the Fashion Design imaged by Hand Work (핸드 워크 감각(感覺)의 패션 디자인 연구(硏究))

  • Yum, Hae-Jung
    • Journal of Fashion Business
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    • v.10 no.2
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    • pp.166-180
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    • 2006
  • The purpose of this study is to analyze the fashion images and the aesthetic characteristics of hand work imaged design. The 'hand work' has not only affected the contemporary life style but also the current fashion trend. The primary source of data has been a collection of recent books, news repots, and many articles from various kinds of mass media and fashion magazines since the year 2000. The results of this study can be summarized as follow. First, hand work imaged fashion design can be divided the background into three parts : post-materialism, aesthetics of slowness, personalize trend. Second, hand work imaged fashion design can be identified with the following images : folklore & craft image, second hand image, high touch image. Third, the aesthetic characteristics of hand work image reflects the concepts of sustainability and process communication.

A Study on Properties of UV-Curing Silver Paste for Touch Panel by Photoinitiator Characteristic (광개시제 특성에 따른 터치 패널용 UV 경화형 Ag 페이스트의 물성 연구)

  • Nam, Su-Yong;Koo, Yong-Hwan;Kim, Sung-Bin
    • Journal of the Korean Graphic Arts Communication Society
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    • v.29 no.2
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    • pp.1-13
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    • 2011
  • The recent spotlight on electronic touch-screen display, a rapid breakthrough in the information society is evolving. Touch panel input device such as a keyboard or mouse without the use of, the on-screen character or a specific location or object on the person's hand touches a particular feature to identify the location of a panel is to be handled. The touch screen on the touch panel is used in the Ag paste is used mostly for low-curable paste. The thermal-curing paste according to the drying process of thermal energy consumption and improve the working environment of organic solvents have problems. In this study, Ag paste used in the non-thermal curing friendly and cost-effective UV curable paste was prepared. Current commercially available thermal-curable binder, was used instead of the flow characteristics of UV-curable oligomers and monomers with functional groups to give a single conductive Ag paste with the addition of a pattern could be formed. Ag paste as a result, thermal-curing adhesive, hardness, resistance and excellent reproduction of fine patterns and was available with screen printing environmentally friendly could see its potential as a patterning technology.

Usability Evaluation of Touch Keyboard in Smart Watch Environment

  • Oh, Euitaek;Choi, Jinhae;Cho, Minhaeng;Hong, Jiyoung
    • Journal of the Ergonomics Society of Korea
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    • v.35 no.6
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    • pp.569-580
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    • 2016
  • Objective: This study aims to identify the most effective keyboard layout in the area of performance for securing usability in a smart watch-using environment and to verify the usability of touch keyboard calibrated by hand. Background: It is necessary to understand the environmental characteristics in using the smart watch and to secure the usability of touch keyboard based on this understanding in order to take account of the users who use the touch screen in the extreme input conditions caused by the small screen of a smart watch. Method: 30 participants in this study were required to input characters using the QWERTY keyboard and 3x4 keypad (Naratgul, Chunjiin), which were familiar with them, in order to grasp the keyboard layout suitable in the smart watch- using environment; the performance (error rate, performance time) of this case was measured. In addition, 30 participants in this study were required to input the characters setting the QWERTY keyboard with calibrated touch area and the one with uncalibrated touch area, based on the characteristics of touch behavior, by finger typing the keyboard, with the performance (error rate and performance time) of this case measured. Results: QWERTY keyboard (93.3sec) is found to be 31.2% faster than Naratgul keyboard, a kind of 3x4 keypad, and 43.6% faster than Chunjiin keyboard, in the area of efficiency, in the results of the usability evaluation regarding the keyboard layout. QWERTY keyboard with calibrated touch area (7.5%) is found to be 23.5% improved compared to the QWERTY keyboard with uncalibrated touch area (9.8%) in the area of accuracy (error rate). The results of the usability evaluation regarding the QWERTY keyboard with touch area calibrated by finger typing the keyboard and QWERTY keyboard with calibrated touch area (80.7sec) is found to be 5.7% improved compared to QWERTY keyboard with uncalibrated touch area (85.6sec) in the area of efficiency (performance time). Conclusion: QWERTY keyboard is found to have an effective layout in the area of efficiency in the smart watch-using environment, and its improved usability is verified in the areas of accuracy and efficiency in the QWERTY keyboard with a touch area calibrated by finger typing the keyboard. Application: The results of this study may be used to set up the basic touch keyboard of the smart watch. The input usability is expected to secure the smart watch-using environment, which is an extreme input condition by applying QWERTY keyboard with touch area calibrated by finger typing the keyboard.

Physical Properties of Ultra-fine Denier Filament Yarn Fabric

  • Kim, Jong-Jun;Son, Yang-Kug
    • Journal of Fashion Business
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    • v.10 no.3
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    • pp.23-30
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    • 2006
  • Various high-touch textile products have been developed recently including ultra-fine denier filament yarn fabrics. The touch or hand of high value-added products is of prime importance. Physical and mechanical properties of fabric specimens, ultra-fine denier filament yarn fabric specimen, 100% wool fabric and wool/polyester 50:50 fabric,were measured using the KES. Compressibility of the ultra-fine denier fabric is recommendable, possibly due to the good bulk property of the specimen. Overall, the THV of the ultra-fine denier fabric is positioned between those of the 100% wool fabric and wool/polyester 50:50 fabric. Observed differences in the physical and mechanical properties explain the fabric specimen characteristics reasonably.

Comparing Elder Users' Interaction Behavior to the Younger: Focusing on Tap, Move and Flick Tasks on a Mobile Touch Screen Device

  • Lim, Ji-Hyoun;Ryu, Tae-Beum
    • Journal of the Ergonomics Society of Korea
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    • v.31 no.2
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    • pp.413-419
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    • 2012
  • Objective: This study presents an observation and analysis on behavioral characteristics of old users in comparison to young users in the use of control on display interface. Background: Touch interface which allows users to control directly on display, is conceived as delight and easy way of human-computer interaction. Due to the advantage in stimulus-response ensemble, the old users, who typically experiencing difficulties in interacting with computer, would expected to have better experience in using computing machines. Method: Twenty nine participants who are over 50 years old and 14 participants who are in 20s years old were participated in this study. Three primary tasks in touch interface, which are tap, move, and flick, were delivered by the users. For the tap task, response time and point of touch response were collected and the response bias was calculated for each trial. For the move task, delivery time and the distance of finger movements were recorded for each trial. For the flick task, task completion time and flicking distance were recorded. Results: From the collected behavioral data, temporal and spatial differences between young and old users behavior were analyzed. The older users showed difficulty in completing move task requiring eye-hand coordination.

Passive and Active Touch of Fabrics: Psychophysiological Responses Modulation by the Emotional Preference of Touched Textures

  • Estate Sokhadze;Imgap Yi;Lee, Kyunghwa;Shon, Jin-Hun
    • Science of Emotion and Sensibility
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    • v.1 no.2
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    • pp.13-22
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    • 1998
  • The sense of touch has both objective and subjective characteristics. During hand evaluation of the fabrics. psycho physiological processes such as emotion and stimulation. On other site, the mode of touch (passive vs. active) is also capable to modulate somatosensory responses. I.e., suppress somatocensory perception during active electrocortical responses to passive and active touch of the textiles with different subjective emotional preference. The study was carried out on 36 female college students. Physiological signals were acquired by Grass and BIOPAC 100 systems with AcqKnowledge variables, namely heart rate (HR), respiratory sinus arrhythmia (RSA), pulse transit time (PTT), respiration rate (RSP) and skin conductance parameters (SCL, amplitude, risetime and number of SCRs) were analyzed for baseline and stimulation conditions. Analysis was manifested in a form of moderate HR acceleration. RSP increase, RSA decrease (lowered vagal tone), decreased PTT and increased electrodermal activity (increased SCL, several SCRs) that reflects general sympathetic activation. Parietal EEG effects (on contra-lateral side to stimulated hand)were featured by short-term alpha-blocking, slightly reduced theta, significantly increased delta and enhanced fast beta activity with few variations across stimuli. The main finding of the study was that most and least preferred textures exhibited significant differences in autonomic (HR, RSP, PTT, SCR, and at less extent in RSA and SCL) and electrocortical responses (delta, slow and fast alpha, fast beta relative power). These differences were recorded both in passive and active stimulation modes, thus demonstrating reproducibility of distinction between most and least emotionally preferred tactile stimuli, suggesting influence of psychological factors, such as emotional property of stimulus, on physiological outcome.

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The Study on the Hand of Bast Blended Fabrics -The development of subjective evaluation method and fabrics' preference- (마직물의 태에 관한 연구;주관적 평가척도개발과 선호도를 중심으로)

  • 박성혜;유효선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.23 no.8
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    • pp.1194-1205
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    • 1999
  • The hand characteristics of bast blended fabrics are studied by a subective evaluation method. To offer basic data for development of better hand of bast fiber fabrics customer's hand preference surveys are executed as well. IN this study 51 varieties of linen or ramie blended fabrics of various blending ratio density and thickness and Hansan ramie Chinese ramie and a Shingosen fabics of various blending ratio density and thickness and Hansan ramie Chinese ramie and a Shingosen farbic and used. To evaluate the hand of the fabrics subjectively nine ranks' semantic differential scale questions of 26 items are developed with adjective pairs. A seven ranks' scale is also developed to evaluate hand preferences in blouse and jacket cloths, Through subjective evaluation of bast blended fabrics the 26 items could be classified into seven kinds of hand classification : surface characteristics extensibility/drapability felling of heaviness stiffness resilience moisture property and feeling of density. The cumulative variance value explained by these seven factors is 67.18% According to the results of fabrics' preference by age groups no significant differences are found in blouse cloths but a few significant differences are found among different age groups in jacket clothes. However experts and non-experts show considerable differences on preference It can be concluded that fabrics' preference I more dependent on professionality than on age. In the survey experts. However more drapery cloths are preferred by experts and cloths with drier touch are preferred by non-experts. Experts prefer rougher less even less winding heavier and sparser fabrics but non-experts prefer rougher lighter thinner and stiffer fabrics as jacket cloths.

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Clinical Study on the Characteristics of Back Skin of the Hand According to Sasang Constitutions (사상체질별 손등 피부 특성에 대한 임상 연구)

  • Lee, Su-Heon;Han, Sung-Soo;Choi, Sun-Mi;Joo, Jong-Cheon;Kim, Jong-Yeol
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.1
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    • pp.15-18
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    • 2005
  • The methodology of constitution diagnosis is main concern in sasang constitutional medicine, but highly reliable method is not yet established. So we statistically analyzed the relationship between the constitution and characteristic factors of skin such as thickness, stiffness, roughness, and touch-feeling, using 1079 clinical data registered to SCIB(Sasang constitution Information Bank), and the following results are obtained: The skin of Taeeumin are more thick or more stiff or more rough than other constitutions. The skin of Soeumin are more soft or more feeble or more feeble-refined than other constitutions. The skin of Soyangin are more slippery or more thin or more slippery-refined than other constitutions. The differences written above were proved to be meaningful enough by Chi-square test.