• Korean Journal of Acupuncture
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• v.39 no.2
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• pp.23-33
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• 2022

Objectives : The purpose of this study is to establish a Korean medical perspective on the human body through understanding of the meridians according to the distribution of the three yin and three yang (삼음삼양) and the opening, closing and pivot (관합추) as defined in ≪Huangdi's Internal Classic≫. Methods : A total of 8 medical databases including KISS, Earticle, DBpia, RISS, OASIS, KMbase, and ScienceON were used to search studies published through July 2021, and literature was included without limitations on the publication period. The search terms were "(meridian OR acupoint OR meridian sinew) AND position" OR "Gwan-Hap-Chu" OR "Gae-Hap-Chu" OR "three yin and three yang". Two researchers independently made choices among the searched literature based on the preplanned selection/exclusion criteria. The search terms were"(meridian OR acupoint OR meridian sinew) AND position" OR "Gwan-Hap-Chu" OR "Gae-Hap-Chu" OR "three yin and three yang". Results : Of the 36 obtained from the survey, 19 (53%) followed the definitions of "internal diameter" for "three yin and three yang" and "the opening, closing and pivot," but 6 (about 16%) took a neutral position and 10 (22%) avoided mentioning. Therefore, it was judged that research was needed to end the debate on the distribution of 'three yin and three yang' and 'the opening, closing and pivot'. In order to apply the definition of ≪Huangdi's Internal Classic≫ on 'distribution of the three-yin and three-yang' and 'the opening, closing and pivot' to the upper limb and lower limb as well as the torso of the human body, this author proposed a human body model with both upper limb and lower limb attached, inspired by the posture of the fetus in the developmental stage. Conclusions : In this study, using a new human body model, it was revealed that the distribution of the three yin and three yang and the opening, closing and pivot' as defined in the ≪Huangdi's Internal Classic≫ can be applied not only to the torso of the human body, but also to the upper limb and lower limb. Based on the understanding of meridians, the selection of meridians in the clinical acupuncture should be made accurately, and continuous interest and research on this are expected.

• Smart Structures and Systems
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• v.23 no.2
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• pp.185-194
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• 2019

The probabilistic tsunami risk assessment of large coastal areas is challenging because the inland propagation of a tsunami wave requires an accurate numerical model that takes into account the interaction between the ground, the infrastructures, and the wave itself. Classic mesh-based methods face many challenges in the propagation of a tsunami wave inland due to their ever-moving boundary conditions. In alternative, mesh-less based methods can be used, but they require too much computational power in the far-field. This study proposes a hybrid approach. A mesh-based method propagates the tsunami wave from the far-field to the near-field, where the influence of the sea floor is negligible, and a mesh-less based method, smooth particle hydrodynamic, propagates the wave onto the coast and inland, and takes into account the wave structure interaction. Nowadays, this can be done because the advent of general purpose GPUs made mesh-less methods computationally affordable. The method is used to simulate the inland propagation of the 2004 Indian Ocean tsunami off the coast of Indonesia.

• Journal of Korea Multimedia Society
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• v.24 no.3
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• pp.440-447
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• 2021

Smartphones are currently being produced with similar functions, shapes, and software. The foldable smartphone is a product that dramatically changed the shape of the existing smartphone. Therefore, it affects the functions and software. In this paper, we analyze the potential security vulnerability of current mobile authentication methods by dividing them into two parts, security vulnerabilities of non-foldable smartphones, and security vulnerability that appears with the changed smartphone structure. According to the analysis result, the classic and current mobile user authentication methods appears to be easily affected by the smartphone display structure. Finally, we propose an appropriate authentication method as well as the concept of security measures for smartphones with foldable screen. Our method shows that it is more secure than the conventional authentication methods in foldable display smartphone.

• Journal of Acupuncture Research
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• v.25 no.5
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• pp.1-16
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• 2008

Backgrounds : There have not been so many studies about the correlation of logical background between acupuncture and herbal medicine. Objectives : This study was aimed to find out the logical relationship between acupuncture points of Wushijiuyu(五十九兪) and Fangfengtongshengsan(防風通聖散) for the treatment of fever disease. Methods : I investigated the background of rationale of Wushijiuyu(五十九兪) and Fangfengtongshengsan(防風通聖散) through survey of classical text include Yellow Emperor's Classic of Medicine(.帝.經內經, Hwang Di Nei Jing), Liujing(類經), Zhenjiujiayijing(鍼灸甲乙經) and Huangdisuwenxuanmingfanglun(黃帝素問宣明方論). Results & Conclusions : The words "Wushijiuyu(五十九兪) and Wushijiuci(五十九刺)" are founded in the Yellow Emperor's Classic of Medicine(黃帝內經) are either prescription of the acupuncture points for the treatment of fever disease. However, acupuncture points of two methods are not same. According to Liujing(類經), Wushijiuyu(五十九兪) have used acupuncture points located in head, upper and lower extremities, trunk, and back. However Wushijiuci(五十九刺) just select acupuncture points of head and extremities without those of trunk and back. Acupuncture points located in yang meridian(45points) and Dumai(督脈, 5points) are significantly used more than those of yin meridian(8 points) and Renmai(任脈, 2points) in Wushijiuyu(五十九兪) and Wushijiuci(五十九刺). The distribution of acupuncture points used Wushijiuyu(五十九兪) have closer correlation with Fangfengtongshengsan(防風通聖散) than Wushijiuci(五十九刺) in the prescription.

• The Journal of Korean Medical History
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• v.30 no.2
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• pp.73-81
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• 2017

This literature review focuses on external treatments for the throat, as found in the classic Korean text, Hyang-Yak-Jib-Sung-Bang Throat. Sections of the text related to external treatment of throat disorders were reviewed. Examples of frequently used external methods include gargling, application of powder, and brushing of the throat. These methods are still used in modern Korean Medicine treatments for Ear-Nose-Throat (ENT) disorders. This discussion is provided with intention to invigorate the ancient practices of throat treatments, by highlighting benefits and results of the therapeutic protocols described in Hyang-Yak-Jib-Sung-Bang Throat. Discovering new effective herbal medicines and developing more precise external treatments will advance ENT treatment in Korean medicine.

• Water Engineering Research
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• v.2 no.3
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• pp.171-178
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• 2001

There are three methods for analyzing flow and pressure distribution in looped water distribution networks (the loop method, the node method, the element method) taking into consideration hydraulic parameters chosen as unknown. For all these methods the non-linear system of equations can be solved by iterative procedures. The paper presents a different approach to this problem by using the method of variational formulations for hydraulic analysis of water distribution networks. This method has the advantage that it uses a specialized optimization algorithm which minimizes directly an objective multivariable function without constraints, implemented in a computer program. The paper compares developed method to the classic Hardy-Cross method. This shows the good performance of the new method.

• Toxicological Research
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• v.16 no.3
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• pp.229-238
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• 2000

The purpose of reproductive toxicity studies is to evaluate all effects resulting from paternal or maternal exposure that interfere with conception, development, birth, and maturation of offspring. In 1966, the US Food and Drug Administration (US FDA) published guidelines for a three-segment study for drug testing to examine adverse effects on fertility and pregnancy. Three segments were proposed: Segment I, Study of Fertility and General Reproductive Performance, to provide information on breeding, fertility, nidation, parturition, neonatal effects and lactation: Segment II, Teratological study, to provide information on embryo toxicity and teratogenicity: and Segment III. perinatal and Postnatal Study, to provide information on late fetal development, labour and delivery, neonatal viability, and growth and lactation. The classic guideline is still used to this day with only monor modification throughout the world. In the present review, the principles and methods of reproductive toxicity studies are discussed with special attention given to scientific issues.

• Journal of the Korean School Mathematics Society
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• v.14 no.2
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• pp.227-239
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• 2011

The circumcenter of a triangle is introduced in logic geometry part of 8th grade mathematics. To handle certain characteristics of a figure through mathematical proof may involve considerable difficulty, and many students have greater difficulties especially in learning textbook's methods of proving propositions about circumcenter of a triangle. This study compares the methods how the circumcenter of a triangle is explored among the Elements of Euclid, a classic of logic geometry, current textbooks of USA and those of Korea. As a result of it, this study tries to abstract some significant implications on teaching the circumcenter of a triangle.

• Korean Journal of Bronchoesophagology
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• v.3 no.2
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• pp.327-331
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• 1997

One of the most difficult airway problems is a subglottic stenosis combined with a tracheal stenosis. Laryngotracheal stenosis has not been completely solved with classic methods like cricotracheal split with autogenous cartilage graft, thyrotracheal anastomosis, and free hyoid or hyoid-sternohyoid myo-osseous flap reconstruction. A 28-near-old male patient who had had laryngotracheal stenosis was successfully treated by laryngotracheal reconstruction using vascularized clavicle. This method has a several advantages: the vascularized clavicle harvesting in the same operative fields, one stage operation, less restenosis due to plentyful blood supply, md prevention of airway collapse due to a clavicle provided framework. It is too early to make a definite conclusion, but the authors suggested that this method could become one of the most effective methods of laryngotracheal stenosis.

• Korean Journal of Oriental Medicine
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• v.8 no.1
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• pp.27-43
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• 2002

The aim of this study is to find out the relationships between the vocal sounds and physiologie and pathologic mechanisms based on the Eum-yang and five phases theory[陰陽五行論]. Firstly, concrete characters of vital rhythm of five-viscera were analyzed and patterns of the five-note in oriental music were converted into that of western music, then it was investigated, the possibility of oriental music therapy using sounds as stimulation methods like herbs, acupuncture, and moxibustion. In conclusion, it was found that controlling the Five-visceral vital rhythm by sounds could be used as one of methods for prevention and treatment of disceases, growing on and balancing a body, etc.