• Journal of the Korean Society of Industry Convergence
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• v.26 no.2_2
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• pp.307-313
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• 2023

This study conducts the flow analysis on the basis of the impeller RPM of water metering valve. The software used for the flow analysis is STAR-CCM+. In terms of the structure of the metering valve, it has an impeller installed inside, and a metering chamber has inlet and outlet holes. The flow analysis on the water metering valve drew the following conclusions: Regarding the flow field in the valve, the impeller had the highest velocity distribution, and complex flow field was generated in the metering chamber. In particular, since the path between the inlet and outlet holes in the metering chamber and the valve body was narrow, there was a section that had flow field interference. The flow rate and flow coefficient distribution according to the impeller RPM were on the linear increase. Given that, it showed the feature of the valve used for water metering on the basis of the impeller RPM.

• Journal of the Korean Society of Industry Convergence
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• v.26 no.3
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• pp.381-387
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• 2023

This study conducts the flow analysis on the basis of the impeller RPM of water measuring valve and differential pressure at valve inlet and outlet. The software used for the flow analysis is STAR-CCM+. In terms of the structure of the measuring valve, it has an impeller installed inside, and a metering chamber has inlet and outlet holes. The flow analysis on the water measuring valve drew the following conclusions: The flow rate and flow coefficient distribution according to the impeller RPM and differential pressure were on the linear increase. Regarding the flow field in the valve, the increased differential pressure had the highest velocity distribution, and complex flow field was generated in the measuring chamber. In particular, since the path between the inlet and outlet holes in the measuring chamber and the valve body was narrow, there was a section that had flow field interference. Given that, it showed the feature of the valve used for water measuring on the basis of the impeller RPM.

• International Journal of Computer Science & Network Security
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• v.23 no.5
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• pp.53-64
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• 2023

Early detection of endometrial carcinoma in uterus is essential for effective treatment. Endometrial carcinoma is the worst kind of endometrium cancer among the others since it is considerably more likely to affect the additional parts of the body if not detected and treated early. Non-invasive medical computer vision, also known as medical image processing, is becoming increasingly essential in the clinical diagnosis of various diseases. Such techniques provide a tool for automatic image processing, allowing for an accurate and timely assessment of the lesion. One of the most difficult aspects of developing an effective automatic categorization system is the absence of huge datasets. Using image processing and deep learning, this article presented an artificial endometrium cancer diagnosis system. The processes in this study include gathering a dermoscopy images from the database, preprocessing, segmentation using hybrid Fuzzy C-Means (FCM) and optimizing the weights using the Whale Optimization Algorithm (WOA). The characteristics of the damaged endometrium cells are retrieved using the feature extraction approach after the Magnetic Resonance pictures have been segmented. The collected characteristics are classified using a deep learning-based methodology called Long Short-Term Memory (LSTM) and Bi-directional LSTM classifiers. After using the publicly accessible data set, suggested classifiers obtain an accuracy of 97% and segmentation accuracy of 93%.

• Natural Product Sciences
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• v.29 no.2
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• pp.91-97
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• 2023

Mangosteen peel extract is a xanthone group, that plays an important role in anti-angiogenesis. This study investigated mangosteen peel extract on cerebral neovascularization in type 2 diabetes mellitus (DM) rats. This study used 36 rats, randomized into six groups: C1 (negative control); C2 (high fat diet (HFD) and mangosteen peel extract at 200 mg/kg BW); C3 (HFD and diabetic); E1, E2, and E3 (HFD, diabetic, and extract at 100, 200, and 400 mg/kg BW respectively). All groups were measured body mass index (BMI), homeostasis model assessment-insulin resistance (HOMA-IR) and β cell function (HOMA-B), and histopathological feature of cerebral vascular (CV). There were significant differences in BMI, HOMA-IR, HOMA-B, and the mean number of CV (all p < 0.05) among treatment groups. E1-3 groups had a significantly lower level of blood glucose and HOMA-IR, and a higher level of HOMA-B and BMI (all p < 0.05) which tends to reduce cerebral neovascularization. HOMA-IR independently had a positive effect to induce neovascularization of CV (p < 0.05, R² = 26.8%). These findings suggested that mangosteen peel extract increased β-cell function sensitivity, and effectively suppressed insulin resistance, BMI, and cerebral neovascularization process in type 2 DM rats.

• Nuclear Engineering and Technology
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• v.55 no.11
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• pp.4083-4095
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• 2023

Currently, various research institutes in Korea are conducting research to develop a safety case for deep geological repository for high-level radioactive waste (HLW). In the past, low and intermediate-level waste (LILW) was approved by a regulatory body by performing a post-closure safety assessment, but HLW has different disposal characteristics and safety objectives are different. Therefore, in the case of HLW, safety assessment should be performed based on these changed conditions, and specific procedures are also under development. In this paper, the regulatory status of prior research institutes, feature, event and process (FEP) and scenario development cases were investigated for well-organized FEP and scenario development methodologies. In addition, through the results of these surveys, the requirements and procedures necessary for the FEP and scenario development stage during the safety assessment of repository for HLW were presented. These review results are expected to be used to identify the overall status of previous studies in conducting post-closure risk assessment for HLW repository, starting with identifying regulatory requirements, the most basic element.

• Journal of Sasang Constitutional Medicine
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• v.36 no.2
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• pp.39-48
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• 2024

Objectives The aim was to develop a method for detecting Sasang constitution based on the ratio of facial landmarks and provide an objective and reliable tool for Sasang constitution classification. Methods Facial images, KS-15 scores, and certainty scores were collected from subjects identified by Korean Medicine Data Center. Facial ratio landmarks were detected, yielding 2279 facial ratio features. Tree-based models were trained to classify Sasang constitution, and Shapley Additive Explanations (SHAP) analysis was employed to identify important facial features. Additionally, Body Mass Index (BMI) and personality questionnaire were incorporated as supplementary information to enhance model performance. Results Using the Tree-based models, the accuracy for classifying Taeeum, Soeum, and Soyang constitutions was 81.90%, 90.49%, and 81.90% respectively. SHAP analysis revealed important facial features, while the inclusion of BMI and personality questionnaire improved model performance. This demonstrates that facial ratio-based Sasang constitution analysis yields effective and accurate classification results. Conclusions Facial ratio-based Sasang constitution analysis provides rapid and objective results compared to traditional methods. This approach holds promise for enhancing personalized medicine in Korean traditional medicine.

• The Journal of the Society of Korean Medicine Diagnostics
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• v.10 no.1
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• pp.36-45
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• 2006

Background and purpose: Well being which emphasizes peace of mind and richness of spirit, has been already used from several thousands years ago, as the name of Yangsaeng(養生) when we regard it in the view point of oriental medicine. Yangsaeng means a person's daily life according to natural rules in order to compensate his essence qi spirit(精氣神) and to prevent and cure his disease for his long life, and there are environment, spirit, qigong, food, dwelling labor, sleeping and sexual intercourse as its methods. But in Korea, we are mainly using the health and concept of the health management and use of it, with the one developed in Western. Thus, in this study, literature study was made for the situation of research and feature of Yangsaeng method. Among them, I tried to study mainly on adapting method of Exercise Yangsaeng and its possibility which can derive harmonious development of Spirit and body for human body, in the view point of identity(整體觀). Methods: Diploma thesis and words of 'Yangsaeng', 'exercise cure', 'exercise therapy', and 'exercise prescription', in 'KERIS(Korea Education & Research Iformation Service).' Results and conclusion: In this study, in order to adapt oriental method of Yangsaeng to the reality, I selected and researched only Exercise Yangsaeng among various Yangsaeng methods including environment, spirit, qigong, food, dwelling labor, sleeping and sexual intercourse. The Exercise Yangsaeng has its advantage that it ran train both mind and body as well as it has various programs, but it is regarded at it is in need of more study as lows; First, it requires assessment on the effect of construction itself as well as degree management of Excercise Yangsaeng as a method of exercise which is being done in daily life or in the literature. Second, above all, standardization of Yangsaeng Exercise and specialized programs are required in order to introduce the Exercise Yangsaeng which was verified for its effect, to the cure of disease. Third, researches are required for the system of assessment management for measurement of relative effect of standardized programs. fourth, continuous compensation is required in the future by adapting researched and developed programs into the field.

• Journal of Korean Medical classics
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• v.31 no.2
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• pp.141-153
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• 2018

Objectives : Acupuncture therapy's reinforcement and reduction method is now widely used in the clinical practices. Meanwhile, there has been a voice of concern since the past that acupuncture has no reinforcement. This thought has not been given enough discussion, and the paper attempts to remedy this absence and verify the validity of the concern. Methods : The acupunctural reinforcement and reduction method found in the Huangdineijing is reviewed, and a number of medical books that discuss the idea of lack of reinforcement in acupuncture are studied. Results : Huangdineijing describes the acupunctural unique feature of reduction. The text explains that acupuncture work in a way that is different that medicine, and thus cannot be used for a disease based on deficiency. In addition, it warned the loss of the primordial qi when needling oneself. Reinforcement in the reinforcement and reduction technique as described in Huangdineijing mainly revolves around preventing the loss of the primordial qi. Conclusions : The purpose of the acupunctural reinforcement and reduction is to control the body's disproportional qi deficiency and excess, where some parts of the body has more qi than others. The reinforcement in "acupunctural reinforcement and reduction method" and the reinforcement in "acupuncture only has reduction and no reinforcement" within the thought of "acupuncture has no reinforcement" are different in that one deals with controlling the imbalance of qi in body, and the other deals with dispelling the deficiency by flowing the qi in the viewpoint of entering and out. This calls for a need to establish the proper acupunctural points, numbers, and times for each disease based on the theory of "acupuncture has no reinforcemen."

• Journal of the Institute of Convergence Signal Processing
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• v.20 no.3
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• pp.151-158
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• 2019

Patients with disabilities from various reasons such as disasters, injuries or chronic illness or elderly with limited body motion range due to aging are recommended to participate in rehabilitation programs at hospitals. But typically, it's not as simple for them to commute without help as they have limited access outside of the home. Also, regarding the perspectives of hospitals, having to maintain the workforce and have them take care of the rehabilitation sessions leads them to more expenses in cost aspects. For those reasons, in this paper, a home-based remote rehabilitation system using motion recognition is developed without needing help from others. This system can be executed by a personal computer and a stereo camera at home, the real-time user motion status is monitored using motion recognition feature. The system tracks the joint range of motion(Joint ROM) of particular body parts of users to check the body function improvement. For demonstration, total of 4 subjects with various ages and health conditions participated in this project. Their motion data were collected during all 3 exercise sessions, and each session was repeated 9 times per person and was compared in the results.

• Journal of Chest Surgery
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• v.33 no.2
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• pp.146-150
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• 2000

background: The prognosis after an aortic valve replacment can be affected significantly by the transprosthetic pressure gradient which is determined mainly by the size of the patients body and the prosthesis used. We analyzed the hemodynamic feature of two relatively new prosthese the ATS and the evensized Medtronic-Hall(M-H) valves by measuring the transprosthetic pressure gradient in the cases where small sizes (23mm or smaller) were used. Material and method: There were 94 patients who received whom aortic valve replacement with prosthesis smaller than 23 mm from October 1994 to June 1998. In these patients the transprosthetic pressure gradient clalculated from the pressure half time during postoperative Dopper echocardiographic examination was compared between the prostheses of different sizes. The body surface area of each patient was also taken into consideration. result: The mean pressure gradient and body surface area in each group were 21.7$\pm$10.2 mmHg and 1.52$\pm$0.14m2 in ATS 19mm 11.4$\pm$6.5 mmHg and 1,57$\pm$0.20m2 in M-H 20mm 15.2$\pm$6.3 mmHg and 1.54$\pm$0.13m2 in ATS 21mm 9.3$\pm$2.5 mmHg and 1.63 $\pm$0.14m2 in M-H 22 mm and 12.9$\pm$5.3 mmHg and 1.69$\pm$0.13m2 in ATS 23mm. Conclusion: The 19mm ATS prosthesis showed significant trasprosthetic pressure gradient which is similar to the values previously reported with other bileaflet prosthesesm Close follow-up was needed in terms of exercise capacity and change in left ventiricular geometry. In patients with small aortic valve annulus the 20mm M-H valve is recomendable as an alternative to 19mm bileaflet valves because it has less pressure gradient with similar outer diameter.