• Journal of Korean Neurosurgical Society
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• 제60권1호
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• pp.30-39
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• 2017

Objective : To compare the clinical outcomes and biomechanical effects of total disc replacement (TDR) and posterior cervical foraminotomy (PCF) and to propose relative inclusion criteria. Methods : Thirty-five patients who underwent surgery between 2006 and 2008 were included. All patients had single-level disease and only radiculopathy. The overall sagittal balance and angle and height of a functional segmental unit (FSU; upper and lower vertebral body of the operative lesion) were assessed by preoperative and follow-up radiographs. C2-7 range of motion (ROM), FSU, and the adjacent segment were also checked. Results : The clinical outcome of TDR (group A) was tended to be superior to that of PCF (group B) without statistical significance. In the group A, preoperative and postoperative upper adjacent segment level motion values were $8.6{\pm}2.3$ and $8.4{\pm}2.0$, and lower level motion values were $8.4{\pm}2.2$ and $8.3{\pm}1.9$. Preoperative and postoperative FSU heights were $37.0{\pm}2.1$ and $37.1{\pm}1.8$. In the group B, upper level adjacent segment motion values were $8.1{\pm}2.6$ and $8.2{\pm}2.8$, and lower level motion values were $6.5{\pm}3.3$ and $6.3{\pm}3.1$. FSU heights were $37.1{\pm}2.0$ and $36.2{\pm}1.8$. The postoperative FSU motion and height changes were significant (p<0.05). The patient's satisfaction rates for surgery were 88.2% in group A and 88.8% in group B. Conclusion : TDR and PCF have favorable outcomes in patients with unilateral soft disc herniation. However, patients have different biomechanical backgrounds, so the patient's biomechanical characteristics and economic status should be understood and treated using the optimal procedure.

• International Journal of Internet, Broadcasting and Communication
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• 제11권4호
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• pp.71-75
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• 2019

Sleep apnea is a disease that causes various complications, and the polysomnography is expensive and difficult to measure. The purpose of this study is to develop an unrestricted wearable monitoring system so that patients can be examined in a familiar environment. We used a method to detect sleep apnea events and to determine sleep satisfaction by non-constrained method using SpO2 measurement sensor and 3-axis acceleration sensor. Heart rate and SpO2 were measured at the finger using max30100. After acquiring the SpO2 data of the user in real time, the apnea measurement algorithm was used to transmit the number of apnea events of the user to the mobile phone using Bluetooth (HC-06) on the wrist. Using the three-axis acceleration sensor (mpu6050) attached to the upper body, the number of times of tossing and turning during sleep was measured. Based on this data, this algorithm evaluates the patient's tossing and turning during sleep and transmits the data to the mobile phone via Bluetooth. The power source used 9 volts battery to operate Arduino UNO and sensors for portability and stability, and the data received from each sensor can be used to check the various degree between sleep apnea and sleep tossing and turning on the mobile phone. Through thisstudy, we have developed a wearable sleep apnea measurement system that can be easily used at home for the problem of low sleep efficiency of sleep apnea patients.

• 산업경영시스템학회지
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• 제38권4호
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• pp.184-192
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• 2015

Korea has already entered into an aging society. In recent decades, the health problems for seniors has received considerable interest. We often see the elderly who have been struggled from discomfort or illness of the foot. Those foot related problems mainly cause from the use of improper shoes. Recently, shoe makers sell the shoes for seniors, so called comfort shoes, but the shoes are too expensive for seniors to buy easily. In this paper, we develop cheap insoles for seniors as an alternative of the comfort shoes and suggest the systematic process for the insoles development. This systematic process is as follows: 1) Survey the literature about the market of insole, 2) Investigate the standard size of body and foot for the seniors in Korea, 3) Analyze the customer needs by survey, 4) Study the walking pattern by experiments, and 5) Develop the novel insole for the seniors to relieve the inconveniences related with foot. From the newly developed insoles, the company B gains the sales increasing effect approximately 30% over through the increase in consumer satisfaction and company reputation and secures for intellectual property rights. Using the database from Korea Research Institute of Standards and Science, the reliability of developing technology of the functional insole has been obtained. The seniors are also enable to choose an alternative of comfort shoes for foot health. In the future, the insoles developed from this study have wide applications in the medical, cosmetic fields, and leisure sports fields. Accordingly, it seems to require more systematic studies utilizing Walk Analyzer and Foot Pressure Meter.

• Journal of Acupuncture Research
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• 제38권3호
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• pp.219-226
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• 2021

Background: The objective structured clinical examination (OSCE) is a widely used method to assess the clinical performance of students in clinical practice. Although OSCE has been used for undergraduate students of Korean medicine, this has not been widely reported. Methods: In 2020, the practical course for acupuncture and moxibustion medicine (acupuncture, electroacupuncture, pharmacopuncture, auricular acupuncture, and burning acupuncture) was taught using flipped learning, according to clinical practice guidelines, and assessed by the OSCE. The appropriateness of this model of education and its evaluation using OSCE were evaluated using a 5-point Likert scale, and the results were analyzed. Results: Of the respondents, 67% reported that the OSCE accurately reflected their competency, and 82% reported that online video lectures helped them to improve their clinical skills. The average adequacy score of the model was > 3.7/5, and the average adequacy score of the checklist used in the OSCE was > 4.1/5 for all 5 clinical application skills. The difference in the mean self-efficacy score between students who had taken the OSCE and those students who had not taken the OSCE, was highest in the burning acupuncture group (0.923). Conclusion: This study showed that students' satisfaction with the OSCE was high and flipped learning was an effective education model. In the future, models representing the human body or simulated patients should be used to evaluate students' skills and attitude.

• 한국의류산업학회지
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• 제21권3호
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• pp.336-345
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• 2019

This study evaluated the preference and wearing characteristics of existing fitness compression wear for elderly women and identified the problems and improvements of existing fitness apparel. Preference and wearing characteristics for 6 types (A-F) of upper and lower fitness compression wear were evaluated. Photos and drawings as well as the preferred designs and details were investigated after presenting the evaluation clothing. Evaluations were made on a 5 point Likert scale for the fitness, allowance, pressure, ease of movement, fabric material, and overall satisfaction after wearing. The design preference indicated that B type (26.6%) and C type (23.4%) were preferred in the top with C, E and F type preferred to the same ratio of 19.4% in the slacks. The fitness and allowance amount of the top B type were the most appropriate (${\geq}4$), the C type was in close contact (2.86), and the F type was inadequate in the neck circumference (1.77). The feeling of pressure was high in the waist, abdomen, thighs, and knees. The area where the elderly people want to improve their strength was the legs; in addition, a pattern design was needed to strengthen leg muscles when designing fitness compression wear. However, a design with excessive adhesion due to a muscle support band was shown to be not preferred. Therefore, depending on the activity, it is necessary to develop a fitness compression wear that applies an optimum stretching ratio of fabric based on body surface area changes.

• 한국콘텐츠학회논문지
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• 제19권6호
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• pp.105-113
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• 2019

본 연구는 유명 인기 캐릭터를 대상으로 한 시선추적실험을 통해 피험자의 시지각 집중도를 분석하여, 캐릭터에서 어떤 부분을 부각시키는 것이 소비자들의 관심과 호기심을 유도하는데 효과적인가를 알아보았다. 연구결과, 캐릭터의 몸보다 얼굴에 더욱 주목하였으며, 그 외 바지, 티, 신발, 수염과 같은 보조요소에도 다소 주목하는 것을 확인하였다. 이러한 결과는 캐릭터에 대한 피험자들의 시선이 자주 그리고 오래 머무는 요소가 명확하게 다름을 의미한다. 그러므로 디자이너들은 캐릭터 구성요소별 시지각 집중도의 차이를 캐릭터에 대한 사용자의 관심과 감정이입, 몰입과 같은 감성적 만족감을 느낄 수 있는 차별화 요소로 인지하고 캐릭터 디자인을 개발할 때 적극적으로 반영해야 할 것이다. 또한 각각의 보조요소의 시지각 집중도에 차이가 있었는데, 그 영향요인 또한 개인의 특성에 기인한 것인지, 아니면 또 다른 영향요인이 발현된 것인지에 대한 세심한 연구가 이루어진다면, 캐릭터 디자인의 보다 폭넓은 연구가 될 것이다.

• Archives of Plastic Surgery
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• 제46권3호
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• pp.221-227
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• 2019

Background Gynecomastia is a common condition that can cause severe emotional and physical distress in both young and older men. Patients in whom symptomatic recalcitrant gynecomastia persists for a long time are potential candidates for surgery. Methods From January 2014 to January 2016, 15 patients underwent correction of gynecomastia through a single 3-mm incision at our institution. Only patients with true gynecomastia underwent surgery with this new technique. Through the small incision, sharp dissection was performed in a clockwise and counterclockwise direction describing two half-circles. Health-related quality of life and aesthetic outcomes were evaluated using a modified version of the Breast Evaluation Questionnaire (BEQ). Results The patients' average age was 23.5 years (range, 18-28 years), and their average body mass index was $23.2kg/m^2$ (range, $19.2-25.3kg/m^2$). One case was unilateral and 14 cases were bilateral. The weight of glandular tissue resected from each breast ranged from 80 to 170 g. No excess skin was excised. Bleeding was minimal. The mean operating time was 25 minutes (range, 21-40 minutes). No complications were recorded. All lesions were histologically benign. The patients' average score was 3.5 (on a 5-point Likert scale) in all domains of the BEQ for themselves and their partners. Conclusions In this study, we demonstrated the safety and reliability of a new technique that allows mastectomy through an imperceptible 3-mm incision. We obtained high patient satisfaction scores using our surgical technique, and patients reported considerable improvement in their social, physical, and psychological well-being after surgery.

• 대한한방부인과학회지
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• 제34권2호
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• pp.142-156
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• 2021

Objectives: The purpose of this study is to report the results of Korean medicine treatment infertility support program in Chungcheongnam-do in 2019. Methods: Participants of Korean medicine treatment infertility support program were provided with Korean herbal medicine, acupuncture and moxibustion for 3 months and followed up for 3 months after the treatments. A total of 115 women out of 125 applicants completed the treatment, and 106 participants' data was collected. The data containing pregnancy rates, characteristics of subjects, treatments, and satisfaction of the program were analyzed. Results: After the treatment, 18 out of 115 subjects became pregnant and had a pregnancy rate of 15.7%. There were no significant differences in factors such as age, body mass index (BMI), social history, infertility period, and history of infertility treatment between pregnant and non-pregnant groups except smoking. Some of the subjects reported positive changes in the menstrual conditions such as cycle, volume and menstrual pain. More than 80% of the subjects answered that they were satisfied with the program in the survey questionnaire. Conclusions: Based on this report, the clinical data were obtained from the infertility treatment program. This study can be used as basic data to help establish infertility support programs and subsequent policies.

• 디지털융복합연구
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• 제19권2호
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• pp.471-479
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• 2021

이 연구는 여성 노인들의 라인댄스 체험 동기와 의미를 살펴보고자 C시 J군에 소재한 보건소에서 라인댄스 프로그램에 참여한 여성 노인 6명을 연구 참여자로 선정하였다. 자료는 심층면담과 참여 관찰을 통해 수집하였다. 자료는 전사, 주제별 약호화, 의미 범주화 및 개념화의 단계를 거쳐 내용을 분석한 결과 다음과 같은 결론을 도출하였다. 첫째, 여성 노인들의 라인댄스 참여 동기는 주변의 권유나 건강의 회복과 유지, 행복을 추구하기 위해 참여하는 것으로 나타났다. 둘째, 라인댄스 체험은 춤이 즐거움을 주며, 누구나 출 수 있다는 춤에 대한 인식을 변화시켰다. 셋째, 라인댄스는 신체와 외모에 대한 관심과 자신감을 향상시켰다. 넷째, 라인댄스는 새로운 친구를 사귀고, 어울릴 수 있는 인간관계 형성을 위한 공간을 제공한다. 다섯째, 라인댄스 체험은 무용을 통한 성취감과 몰입감을 향상시켰다. 여섯째, 가족들의 지지와 칭찬은 자존감을 높이고 전반적인 삶의 만족도와 행복감을 증진시켰다.

• 대한조선학회논문집
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• 제59권2호
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• pp.96-108
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• 2022

In this paper, we propose a systematic hull form variation technique which automatically satisfies the displacement constraint and guarantees a high level of fairness. This method is possible through multiple parameter correction curves. The present method is to improve the hull form variation method based on parametric modification function and consists of two sub-categories: SAC variation and section lines modification. For SAC variation, the utilization of two B-Spline curves satisfying GC¹ condition led to the satisfaction of displacement constraint and high level of fairness at the same time. Section lines modification methods involves in using two fuctions: the first is the waterplane modification function combining two cubic splines. the other function is the sectional area modification function consisting of 2nd order polynomial over the DLWL(Design Load Waterline) and 3rd order polynomial below the DLWL, This function enables not only the fundamental U-V section shape variation but also systematically modified section lines. The present method is expected to be more useful in the hull form optimization process using CFD compared to the existing method.