• Journal of the Ergonomics Society of Korea
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• v.30 no.6
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• pp.749-755
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• 2011

Objective: The purpose of this study is to assess the reducing effect of workload on developed electro-motion scissors. Methods: To achieve this, we measured the pressure distribution, Joint angle of fingers and JSI(Job Strain Index) for electro-motion scissors and hand-operated scissor in objective assessment and surveyed the uncomfortable degree in subjective assessment. Results: As a result, The peak of pressure in the electro-motion scissors was generally lower than the hand-operated scissors. JSI and overall joint angle of fingers for the electro-motion scissors were remarkably lower than the hand-operated scissors. Also, the subjective uncomfortable degree showed that the uncomfortable point of electro-motion scissors were generally lower than the hand operated scissors. Conclusion: The impact of reducing the work load as well as distributing the pressure around the hand by using electro-motion scissors during grapes pinching was confirmed.

• The Journal of Internal Korean Medicine
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• v.37 no.5
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• pp.847-854
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• 2016

Background and Objective: The Korean agricultural population is now rapidly aging. Older people in rural areas are weak due to work-related musculoskeletal disorders. The aim of this case is to report treatment of injuries to the nerves at the wrist and hand level by Korean medicine. Methods: The patient in this case was a 74-year-old male. He had injured nerves at the right wrist and hand level due to agriculture work. We treated him with acupuncture, herbal medicine, etc. Results: The patient showed the first sign of recovery of his wrist after 13 days treatment. After 37 days of treatment, his wrist movement was restored to a nearly normal range. He showed the first sign of recovery in a finger after 19 days of treatment and his grasping power increased from 0% to 60%. The cold sensation in his hand and arm also disappeared. Conclusions: We cannot generalize based only on this one case study. Nevertheless, this report suggests that Korean medicine may be an effective treatment for injury of nerves at the wrist and hand level.

• Proceedings of the ESK Conference
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• 1992.10a
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• pp.54-62
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• 1992

This work has been directed at studying and developing a prototype Computer Aided Design(CAD) tool to be used for planning tendon paths in hand reconstructive surgery. The application of CAD to rehabilitative surgery of the hand is a new field of endeavor. There are currently no existing systems designed to assist the orthopedic surgeon in planning these complex peocedures. Additionally, orthopedic surgeons are not trained in mechanics, kinematics, math modeling, or the use of computers. It was also our intent to study the mechanisms and the efficacy of the application of CAD techniques to this important aspect of hand surgery. The following advances are reported here: Interactive 3D tendon path definition tools., Software to calculate tendon excursion from an arbitrary tendon path crossing any number of joints., A model to interactively compute and display the foirces in muscle and tendon., A workstation environment to help surgeons evaluate the consequences of a simulated tendon transfer operation when a tendon is lengthened, rerouted, or reattached in a mew location., It also has been one of the primary concerns in this work that an interactive graphical surgical workstation must present a natural, user-friendly environment to the orthopedic durgeon user. The surgical workstation must ultimately aid the surgeon in helping his patient or in doing his work more efficiently or more reliably.

• Journal of the Korea Safety Management & Science
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• v.26 no.2
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• pp.87-92
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• 2024

This study aims to compare six observational methods for assessing arm- and hand-intensive tasks, based on literature review. The comparison was conducted in viewpoints of body regions, force/external load, motion repetition, other factors including static posture, coupling, duration/break, pace, temperature, precision task, and final risk or exposure level. The number of risk factors assessed was more, and assessment procedure was more complex than the observational methods for assessing whole-body postural loads such as Ovako Working Posture Analysis System(OWAS), Rapid Upper Limb Assessment(RULA), and Rapid Entire Body Assessment(REBA). Due to these, the intra- and inter-reliabilities were not high. A past study showed that while Hand Arm Risk Assessment Method(HARM) identified the smallest proportion of the work tasks as high risk, Strain Index(SI) and Quick Exposure Check(QEC) hand/wrist were the most rigorous with classifying most work tasks as high risk. This study showed that depending on the observational technique compared, the evaluation factors, risk or exposure level, and evaluation results were different, making it necessary to select a technique appropriate for the characteristics of the work being assessed.

• Archives of Plastic Surgery
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• v.48 no.4
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• pp.384-388
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• 2021

Adequate positioning of the hand is a critical step in hand fracture operative repair that can impact both the clinical outcome and the efficiency of the operation. In this paper, we introduce the use of a thermoplastic splint with an added thumb stabilizing component as a means to increase the surgeon's autonomy and to streamline the patient care pathway. The thermoplastic splint is custom fabricated preoperatively by the specialist hand therapist. The splint is used prior, during, and post operation with minimal modification. The thumb component assists maintaining the forearm in a stable pronated position whilst drilling and affixing metal work. This is demonstrated in the video of removal of metal work and open reduction and internal fixation of a metacarpal fracture.

• Journal of the Korean Dietetic Association
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• v.4 no.2
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• pp.235-244
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• 1998

Hand washing is an important component of hygiene program for food handlers. Hands can be a source of direct or indirect contamination of foods with pathogenic microorganisms. In this study, the effectiveness of hand washing methods and the use of 70% alcohol solution against transient skin bacteria was tested in an university foodservice facility. 70% alcohol solution is sprayed for 5 seconds automatically when hands are placed in the dispenser. Samples were taken using swab technique in meat cutting area, vegetable trimming area, and vegetable cutting area: before and after washing hands according to planned methods, and after being sprayed with 70% alcohol solution after washing hands. The bacteriological analysis of total plate counts, coliform, fecal coliform of food handlers' hands was done. Statistical data analysis was completed with Mann-Whitney U test and Kruskal-Wallis model using the SPSS program. The levels of initial contamination of workers' hand were significantly different by the work areas($x^2$=9.156, p<0.01). Workers in the vegetable trimming area had more heavily soiled hands than in the other work areas. Mean of TPC counts and coliform was 8.97×$10^5$ CFU/12.4$cm^2$, 2.93×$10^2$ MPN/12.4$cm^2$ respectively, but fecal coliform was not detected. Transient bacteria were removed from hands after washing and using 70% alcohol solution but were not removed completely. Mean reduction percentage in TPC varied among work areas and ranged from 93.19% to 94.99%, and in coliforms from 97.31% to 100%. A significant difference in TPC was found between before and after hand disinfection (Z=-2.714, p<.01) and between standardized hand washing procedures and un-standardized hand washing procedures(z=-2.301, p<.01). Subjects using the hand sanitizer showed a great elimination of TPC(99.45% reduction), but this effect was valid only after following proper washing procedures. Based on the results, the most effective hand washing method was recommended as the combination of the standardized hand washing procedure with warm-water and use of the 70% alcohol solution. The results can be used to develop hand hygiene programs and training strategies for enhancing hand hygiene practices for food handlers in foodservice operations.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2001.10a
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• pp.85-90
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• 2001

Recent general Press brake has many problems in cutting high accurate products in the progress of industry. Previous hand-operated press brake needs many pre-processing works to adjust bending ang1e and marking-off works to calculate bending length. Also, the hand-operating work makes many geometric errors and has difficulty for variety-mass production. To solve these problems, this paper proposes Computer Numerical Control (CNC) general press brake and development of servo-control system based on database for reduction of geometric errors and pre-processing work time and high accuracy bending work.

• Journal of Families and Better Life
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• v.28 no.2
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• pp.147-163
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• 2010

The disposition towards volunteer work and leadership traits are the basic qualities that should be possessed by teenagers who are to become next generation leaders. The 'Volunteer Work and Leadership' program was developed to attain this goal and all S high school students were subjected to this program. This program was comprised of four modules, and this dissertation is focused on the second module: 'Wisdom Leader'. This program, which was conducted for six hours on a daily basis, was carried out two times per day during the first semesters of 2006 and 2007 on freshmen students. The program was comprised of three conceptual frameworks-Education of the heart that improves your emotion which includes 'cultural performance', 'volunteer work leadership group performance' and 'spot strategy for stress management'. Education of the hand pursues knowledge, which includes 'special lecture of leadership' and 'leader research through movies', and Education of hand which students directly participate in workshops were also used. After studying the results of the program, it was found that the satisfaction level of the education was higher during the second session than the first session. Therefore the objective of this program to enhance the leadership qualities of students was attained Also, this dissertation was able to reaffirm the relationship between volunteer work and leadership. I hope that the leadership content can be used systematically for enhancing the educational effect of volunteer work.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.436-439
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• 2012

The work is to the control the desktop Computers based on hand gesture recognition. This paper is worked en real time tracking and recognizes the hand gesture for controlling the slides based on hand direction such as right and left using a real time camera.

• Journal of Digital Convergence
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• v.17 no.12
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• pp.375-382
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• 2019

The purpose of this study was to examine perception, attitude, performance on the hand washing by dental hygienist. A self-reported questionnaire was surveyed by 165 dental hygienist in G area. The data were analyzed for frequency analysis, average, standard deviation, independent t-test, one-way ANOVA, pearson's correlation coefficient by using SPSS 21.0 program. The perception on the hand washing, age and work place, career, Number of hand washing, Frequency of hand washing education were higher significantly. The attitude, performance on the hand washing by dental hygienist, age, career, work place were higher significantly. There were positive correlations among the perception, attitude, performance of dental hygienists on the hand washing by dental hygienist. The result of this study indicates a necessity for developing education programs consistently to improve perception, attitude, performance of hand washing by dental hygienist.