• Korean Journal of Acupuncture
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• v.29 no.2
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• pp.290-299
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• 2012

Objectives : 'Obtaining qi(deqi)' is a sensation experienced by a patient or an acupuncturist during acupuncture treatment, and it is considered to be an important factor in acupuncture treatment. However, previous studies reported conflicting results about the relationship between 'obtaining qi(deqi)' sensation and the effect of acupuncture treatment. Also, most of the previous studies investigating 'obtaining qi(deqi)' and the acupuncture effect, dealt with the analgesic effect of acupuncture. The objective of this study was to analyze the relation between the 'obtaining qi(deqi)' and the anti-itching effect of acupuncture treatment. Methods : Twenty one healthy subjects participated in this study. At the first visit, itch was induced to all subjects using intradermal injection of histamine on the lower arm. At the second visit, acupuncture treatment was applied using LI11 and 'obtaining qi(deqi)' was assessed. After acupuncture treatment, itch was induced again, and itch VAS and skin flare were assessed. Results: At the 6,8,10 minutes after histamine injection, the change of itch VAS between before and after acupuncture treatment was significant. Among 'obtaining qi(deqi)', subjects reported that 'dull ache', 'pricking', 'heavy' were most strong. Total score of 'obtaining qi(deqi)' sensation was not related to the change of itch VAS or skin flare. The 'electric shock' sensation is related to the change of itch VAS, and 'bruised' and 'heavy' sensations were related to the change of skin flare. Conclusions : Total 'obtaining qi(deqi)' is not related to the anti-itching effect of acupuncture, but several sensations showed relationship with the effect of acupuncture on itch severity and skin flare. Further researches based on various symptoms or acupuncture points, are needed.

• The Journal of Korean Medicine
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• v.34 no.1
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• pp.15-28
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• 2013

Objectives: The purpose of this study was to investigate the differences in kind, intensity and depth of de Qi sensation by patients' gender, age, BMI and sensitivity. Methods: Sixty-four healthy volunteers (mean age $26.51{\pm}4.72$, range 22-39) who had been studying anatomy, meridianology, acupuncture & moxibustion for more than five years at Dongguk University, Go-yang, Korea, were invited to take part in an investigation of the sensations associated with acupuncture needling. Needling was self-administered on Hegu (LI4) in the hand and Zusanli (ST36) in the leg randomly. After obtaining de Qi, the participants were asked the kind, intensity and depth of de Qi sensation. Results: There was no statistically significant difference in the kind of de Qi sensation found by acupoints and needling methods (p>0.05). Hegu (LI4) was found to be significantly higher in the intensity (p<0.001), and the depth of de Qi sensation was significantly higher in Zusanli (ST36) than Hegu (LI4) (p<0.001). There was statistically significant difference found in the intensity of de Qi sensation by depth and sensitivity (p<0.05). In the depth of de Qi sensation, there was statistically significant difference found by sensitivity (p<0.05). In de Qi sensation of practitioners, there was statistically significant difference found by gender, BMI, the intensity of de Qi sensation (VAS) and sensitivity. Conclusions: Further study involving acupuncture de Qi sensation and the influencing factors is needed.

• Journal of Acupuncture Research
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• v.28 no.5
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• pp.65-76
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• 2011

Objectives : Study about needle retaining time. Methods : We reviewed the ancient and the present text of China with using the China academic journal(CAJ) of China national knowledge infrastructure(CNKI) Results & Conclusions : 1. Needle retaining time is important in acupuncture, because the therapy effect is influenced by it. 2. The time of needle retaining is up to those conditions like different disease, viscera and bowels(臟腑), meridian and collateral(經絡), obtaining Qi(得氣), seasons, constitution of the patients and acupuncture tools. In ${\ll}$Hwangdineijing(黃帝內經) ${\gg}$, needle retaining time is called by 'Zhiruzhichu(直入直出)', 'Jichu(疾出)', 'Liu(留)', 'Buliu(不留)', 'Jiuliu(久留)' and 'Liu ${\bigcirc}$ hu(留${\bigcirc}$呼)', and the time was shorter than nowadays. 3. The respiration number was counted to check needle retaining time but we can't find out any evidence. Recently in China, 'obtaining Qi(得氣)' and 'Qi arrival(氣至)' is used to check it. 4. Looking into clinical researches, different diseases need different needle retaining time. For example, 20~30min is appropriate time for musculoskeletal system. 60min is for circulatory system, 10~20min is for peripheral facial nerve paralysis. Insomnia and some stubborn diseases need longer time. Cold and heat(寒熱), deficiency and excess(虛實) are always influences the needle retaining as well. 5. It is important to figure out the most effective needle retaining time for different disease with the base of connection between needle retaining time and effect.

• Proceedings of the IEEK Conference
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• 2000.07b
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• pp.645-648
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• 2000

A workflow is a flow of work carried out by multiple people. In order to increase efficiency, it is re-quired to change the current workflow dynamically. Till now, three types of dynamic changes: flush, abort, and synthetic cut-over (SCO) , have been proposed. How- ever, the performance evaluations for dynamic workflow changes have not been undertaken. To do so, measuring the amount of time cost making a single change (called change time) and comparing the methods for obtaining such times become ever important. In this paper, we first define change time and then propose a computation method individually for each change type. Finally, we evaluate the performance of an example net change by computing the change times.

• Advances in concrete construction
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• v.15 no.4
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• pp.269-286
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• 2023

In the present study, we aim to utilize the numerical solution frequency results of functionally graded beam under thermal and dynamic loadings to train and test an artificial neural network. In this regard, shear deformable functionally-graded beam structure is considered for obtaining the natural frequency in different conditions of boundary and material grading indices. In this regard, both analytical and numerical solutions based on Navier's approach and differential quadrature method are presented to obtain effects of different parameters on the natural frequency of the structure. Further, the numerical results are utilized to train an artificial neural network (ANN) using AdaGrad optimization algorithm. Finally, the results of the ANN and other solution procedure are presented and comprehensive parametric study is presented to observe effects of geometrical, material and boundary conditions of the free oscillation frequency of the functionally graded beam structure.

• Journal of Korean Medical classics
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• v.24 no.3
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• pp.15-25
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• 2011

The acupuncture procedures in Hwangjenaekyung (黃帝內經) was different to modern ones in many aspects. Especially, the role of pulse diagnosis in acupuncture was totally different and the pulse diagnosis was essential part in acupuncture therapy in Hwangjenaekyung era. We found four noteworthy features on the pulse diagnosis before and after acupuncture in Hwangjenaekyung : (1) Pulse diagnosis was a mandatory process in acupuncture (2) Doctors who used pulse diagnosis in 12 meridians (十二經脈遍診脈法), pulse diagnosis in 9 points of 3 body parts (三部九候脈法), and comparative pulse diagnosis between radial artery and carotid artery (人迎寸口對比脈法) followed the former rule ((1)). (3) The major pulse features to detect before and after acupuncture were conversion between the vacuous pulse (虛脈) and the replete pulse (實脈), and conversion between slippery pulse (滑脈) and rough pulse (澁脈). (4) Deukki (得氣, Deqi) was synonym of Kiji (氣至), and it referred to the changes of arterial pulse, not the sensation followed by acupuncture manipulation.

• Structural Engineering and Mechanics
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• v.70 no.6
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• pp.723-735
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• 2019

Track-bridge interaction (TBI) problem often arises from the adoption of modern continuously welded rails. Rail expansion devices (REDs) are generally required to release the intensive interaction between long-span bridges and tracks. In their necessity evaluations, the key techniques are the numerical models and methods for obtaining TBI responses. This paper thus aims to propose a preferable model and the associated procedure for TBI analysis to facilitate the designs of long-span bridges as well as the track structures. A novel friction-spring model was first developed to represent the longitudinal resistance features of fasteners with or without vertical wheel loadings, based on resistance experiments for three types of rail fasteners. This model was then utilized in the loading-history-based TBI analysis for an urban rail transit dwarf tower cable-stayed bridge installed with a RED at the middle. The finite element model of the long-span bridge for TBI analysis was established and updated by the bridge's measured natural frequencies. The additional rail stresses calculated from the TBI model under train loadings were compared with the measured ones. Overall agreements were observed between the measured and the computed results, showing that the proposed TBI model and analysis procedure can be used in further study.

• Journal of Physiology & Pathology in Korean Medicine
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• v.24 no.5
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• pp.883-891
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• 2010

The purpose of this study was to investigate the relation between each pattern identification such as Dampness-Phlegm, Fire-Heat, Deficiency of Qi, Deficiency of Yin and Blood Stagnation and blood lipid level in acute stroke patients. This study was done over patients hospitalized in 13 Oriental Medical Hospitals in the period of November 2006 to Jun 2009. Patients had been interviewed by residents and medical specialists who studied standard operation procedures in Fundamental Study for Syndrome of Oriental Medicine for Stroke. Study subjects consisted of group A that was distributed to specified pattern identification by medical specialist and discriminating program, group B that was distributed to specified pattern identification by medical specialist or discriminating program, and the control group that wasn't distributed to specified pattern identification by medical specialist and discriminating program. For the purpose of obtaining suitable result, we analyzed blood lipid level of each group by univariate analysis. In this study, there was not statistically significant relation between most of each pattern identification and blood lipid level except relation between Fire-Heat pattern group B and decreasing HDL cholesterol. Based on these results, it is suggested that Dampness-Phlegm would not be the independent predictors of hyperlipidemia unlike other studies that were presented in. More prospective studies between Fire-Heat and decreasing HDL cholesterol are to be done with more clinical data.