• The Korean Journal of Rehabilitation Nursing
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• v.12 no.2
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• pp.81-91
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• 2009

Purpose: This study is aimed at life adaptation process of women with the spinal cord injury. Method: The subjects were 6 women in Kyeonggi and they had interview individually. The study was conducted during June to November in 2009 and developed substantial theory in women's life adaptation process by applying ground research methodology. Result: Motivation for such a change was their psychological pain, which is the central phenomenon. Social activities sustained them during such a process, while social support and experience of achievement acted as an intervention condition. During the initial period, they had a vague expectation that the condition of their accidental spinal cord injury would be improved. Then the expectation had failed, they experienced psychological pain, finding out the reality about the disabled and social difficulties awaiting them. Since then they began to love themselves, pursuing a changed life of hope, achievement and serving. Conclusion: Its result is expected to serve as a basic data for rehabilitation nursing, so that they may conduct independent lives, with a love toward themselves. Repetitive research would be necessary concerning the adaptation process of women in order for the criteria presented to become richer, and for the relations among the criteria to become more refined.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.33 no.9
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• pp.982-989
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• 2009

Parallel Kinematic Mechanism (PKM) is a device to perform the various motion in three-dimensional space and it calls for six degree of freedom. For example, Parallel Kinematic Mechanism is applied to machine tools, medical equipments, MEMS, virtual reality devices and flight motion simulators. Recently, many companies have tried to develop new Parallel Kinematic Mechanism in order to improve the cycle time and the precisional tolerance. Parallel Kinematic Mechanism uses general universal joint and spherical joint, but such joints have accumulated tolerance problems. Therefore, it causes position control problem and dramatically life time reduction. This paper focused on the rolling element to improve sliding precision in new sliding ball joint development. Before the final design and production, it was confirmed that new sliding ball joint held a higher load and a good geometrical structure. FEM analysis showed a favorable agreement with tensile and compressive testing results by universal testing machine. In conclusions, a new sliding ball joint has been developed to solve a problem of accumulated tolerance and verified using tensile and compressive testing as well as FEM analysis.

• Journal of Welding and Joining
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• v.33 no.3
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• pp.40-46
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• 2015

Welding is one of the most fundamental and necessary work in the industry that demand sophistication of skilled workers. This study is to introduce welding simulator as a training tool, to verify its effectiveness and to measure satisfaction of the trainees. A group of freshman students at a Korea Polytechnics College in their twenties with less experience of welding participated in the study. They were divided into two groups and took a traditional training course (comparison group) and a training course with welding simulator applied reality/haptic technology (experimental group) for same hours respectively. To evaluate training effect, a national certificate test and a survey based on Phillips' ROI (Return on Investment) methodology were conducted by the students and the college respectively. And satisfaction survey among the students based on Kirkpatrick's Four-Level Evaluation Model was also carried out. The results showed that all students in the experimental group passed the national certificate test and the ROI of the experimental group for five years were 110% higher than the comparison group. Furthermore, 25% more students in the experimental group replied "very satisfied" about the overall training course and 75% more students in the same group found that the simulation was very similar to the real welding.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.57-61
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• 2005

This paper presents a new colonoscopy training simulator that includes a specialized haptic device and graphics algorithms to transfer haptic sensation through a long and flexible tube, and manage large number of polygons. The developed haptic device makes the colonoscope tube move along the two guiding rods in the translational direction. The torque of the roll motion is transferred by a timing belt and pulleys. A special guide is developed, which allows the force and torque from the motors to be transmitted to the user without loss. The haptic device is evaluated by physicians. One of the important skills of the colonoscopy, jiggling is incorporated for the first time by the developed sensor mechanism using photo-sensors. A colonoscope handle that shares the look, feel, and functions with the actual colonoscope, is developed with the necessary electronics inside. The number of polygons is reduced by an edge-collapse algorithm for real-time simulation. The algorithms to import CT data, to segment the colon image, to extract centerline of the colon, and to construct the colon surface, are integrated into a Colon Modeling Kit system that performs all these processes in real-time.

• Journal of Korean Academy of Nursing
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• v.50 no.5
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• pp.699-713
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• 2020

Purpose: The purpose of this study was to understand and describe the experiences of patients with Meniere disease. Methods: Data were collected from February 19, 2019, to February 5, 2020, through individual in-depth interviews with 13 Meniere patients. Verbatim transcripts were analyzed using Colaizzi's phenomenological analysis. Results: The experiences of patients with Meniere disease were clustered into the following four themes from 22 meaning units: 1) Complex unfamiliar symptoms that shatter both balance of the body and peace of the heart; 2) A disease that medical treatment and health professionals cannot cure; 3) Suffering hardships that cannot be understood by non-Meniere sufferers; and 4) Making daily efforts to become healthier. Symptoms of Meniere disease are life-shattering and depressing because they are neither visible nor easily curable. Over time, as they accepted the reality of living with the disease, the participants would shift their focus from complete symptomatic cure to leading a healthy and more balanced life. Conclusion: This study shows that Meniere disease has a pervasive impact on all aspects of the patients' lives. Patients are prone to experiencing restrictions in their social functioning and activities. They also experience psychosocial problems due to the unseen nature of their symptoms. This study elucidates the experiences of Meniere patients and the need for nursing intervention to help improve their quality of life and ability to self-manage. Lastly, this study shows the need for a coordinated interdisciplinary approach to raising public awareness of the disease.

• Women's Health Nursing
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• v.18 no.4
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• pp.257-267
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• 2012

Purpose: This study was conducted to identify the caring experience of the mothers of childhood burn patients. Methods: Data were collected from 28 mothers of childhood burn patients, through semi-structured in-depth interviews. Data were categorized and coded by using content analysis. Results: 27 categories and 102 statements were drawn from 4 domains. The analyzed domains were psychological sufferings, confronted harsh reality, coping method, and future concerns. Psychological sufferings were categorized heartache, sense of guilt, confusion, regret, depression, sorriness, getting hurt, frustration and upset feeling. Confronted harsh nature were categorized economic difficulty, physical burn-out, lack of caring other children and family troubles. Coping method were categorized positive thinking, having hope, ventilating feelings, accepting the situations, demanding help from family members, changing patterns of the burned child rearing, collecting information for burn treatment, refusing accept the condition of burned child, avoiding personal and social relationship, and reliance on religion. Concerns were categorized concerns of growth and adaptation of the burned child, anxiety for scar, concerns of adapting school life and vague future concerns. Conclusion: The nursing interventions for early assessing psychological problems and providing social supports for caring both burn patients and other siblings should be provided to the mothers of childhood burn patients.

• Journal of Korean Academy of Nursing
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• v.42 no.4
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• pp.486-495
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• 2012

Purpose: The purpose of this study was to explore the main prerequisite for Korean Advance Directives [KAD] to ensure their better use. Methods: Data were collected from two focus group interviews and individual email responses. Study participants were 5 doctors and 6 nurses. All interview data were transcribed and analyzed using qualitative content analysis. Results: Three main themes emerged; establishing a philosophy of KAD, protocol to practice KAD, and the KAD document itself. A philosophy is needed to ensure individual needs, consensus to practice AD and identify principle agents. The core of protocol was found to be as follows; 1) process, 2) premise, 3) procedure, 4) contextual preparation, 5) timing, 6) feasibility. Component and feasibility need to be established for the document itself. Conclusion: For a positive acceptance of KAD in Korean society, a culture sensitive, reality based, and user friendly AD needs to be developed.

• Journal of Biomedical Engineering Research
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• v.23 no.3
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• pp.207-216
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• 2002

This Paper describes a quantitative analysis of Postural balance training using virtual bicycle system. We have used a virtual bicycle system that combines virtual reality technology with a bicycle . In this experiment, 20 normal adults were tested to investigate the influencing factors on Postural balance. Several factors including cycling time. cycling velocity. number of times of Path deviation, center of Pressure(COP) . and weight shift were extracted and evaluated to quantify the extent of control. Also, To improve the effect of balance training, we investigated the usefulness of visual feedback information by weight shift The results showed that the system was effective Postural balance rehabilitation training device and. in addition. the analysis method might have a wider applicability to the rehabilitation field.

• Proceedings of the KOSOMBE Conference
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• v.1998 no.11
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• pp.283-284
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• 1998

The Virtual Reality Technology makes you feel like you are in the situation which has been made up by using the information inputted through the device which is connected with the body part. If the image which is taken from CT, MRI is reorganized in 3D, it can present the shape of the human organ more clearly. So It is more likely to be used in the operation which needs the diversified examination about mutual relation with each part in a place of 3D or confirmation of the planed information. We developed the Technology which can reorganize the image from the CT into the 3D data and represent the 3D movement of the finger according to the hand.

• Journal of Veterinary Clinics
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• v.29 no.1
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• pp.68-77
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• 2012

Whenever planning a study design or preparing a research proposal it is highly recommended that investigators decide the optimum sample size that is required to yield an outcome of interest with a predetermined level of precision. This is because that, all else being equal, if a study with less than the optimum sample size would not detect the significance of differences in reality, and similarly, if a study with more than the optimum sample size will be costly. For these reasons, the majority of peer reviewed biomedical journals assess the adequacy of sample size requirements. The calculated sample size is used as a target number of samples to be collected to provide an estimate of the parameter with the desired and predetermined level of accuracy, and the sample size is a major determinant of the probability of detecting diseased animals from the population. There is no single method of calculating sample size for any given study design. In this context, the purpose of this article is to provide a collection of formulas and examples for some typical situations likely to be encountered in veterinary clinical practice and to highlight the importance of performing prospective sample size calculations when planning a research. Specifically, this paper is concerned with the basic principle of sample size calculation, and considerations for methodological applications were illustrated for a given data set. Also included in this paper is factors influencing sample size calculations using a statistically valid techniques. Appropriate methods to consider these factors are presented.