• 대한한의학회지
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• 제28권4호
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• pp.69-73
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• 2007

Objectives : With an assumption of the traditional oriental medical theory, we were to evaluate the effect of tonification/sedation-manipulated acupuncture on autonomic nervous activity in healthy subjects. Methods : This study is a randomized cross-over trial. We enrolled healthy subjects, and assigned them randomly into group A or group B. Group A received acupuncture therapy on Shen-Men (He-7) and Nei-Kuan (EH-6) with tonification-manipulation, while Group B received it with sedation-manipulation. Their heart rate variability was monitored for 2 hours. After 3 days of washout period, the subjects were crossed over to the other manipulation method, and the same procedures were performed. Results : There was no statistical significance in the change of RR, SDNN, LF, HF, and LF/HF ratio between the tonification-manipulated and the sedation-manipulated groups. However, HF curve in the tonification manipulated group showed increasing tendency for 15 minutes after acupuncture. Conclusions :We suggest that the traditional tonification-manipulated acupuncture on Shen-Men and Nei-Kuan could increase parasympathetic activity shortly after acupuncture, but further evaluation on a larger sample size is needed to confirm this suggestion.

• 한국운동역학회지
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• 제17권4호
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• pp.1-8
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• 2007

The purpose of this study was to investigate the difference in the stride-to-stride variability between two treadmill conditions; traditional treadmill and special treadmill whose speed can be adjusted automatically by subject's walking speed. Eight male subjects (25.1 years, 172.7 cm, 66.6 kg) were participated in treadmill walking experiment. First, preferred walking speed (PWS) of each subject was determined. Second, each subject performed walking experiment with fixed PWS condition and with free PWS condition for 10 minutes. 3D motion capture system (Motion analysis Corp., USA) with 6 cameras was used to collect motion data with sampling frequency of 120Hz. Temporal and spatial variables for stride-to-stride variability were calculated. Coefficient of variance (CV) which quantifies the amount of variability and Detrended Fluctuation Analysis (DFA) which explains the structure (self-similarity) of the variability were used for analysis. Results showed that the amount of variability during free PWS condition was greater than that of fixed PWS condition. DFA results showed that there was a statistical difference between two treadmill conditions for the variables of step length, stance time, and double support time. From these results, it is possible that traditional treadmill study might give incorrect conclusion about gait variability study. Further study is necessary to clarify these matters by considering the number of subjects, experimental time, and gait variables for the study of stride-to-stride variability.

• Archives of Plastic Surgery
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• 제35권4호
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• pp.393-399
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• 2008

Purpose: Chronic infected wounds sustained over 4 weeks with exposed tendon or bone are difficult challenges to plastic surgeons. Vacuum assisted closure (VAC) device has been well used for the management of chronic wounds diminishing wound edema, reducing bacterial colonization, promoting formation of granulation tissue and local blood flow by negative pressure to wounds. But Commercial ready-made VAC device might have some difficulties to use because of its high expenses and heavy weight. So we modified traditional VAC device with silver dressing materials as topical therapeutic agents for control of superimposed bacterial wound infection such as MRSA, MRSE and peudomonas. Methods: We designed the modified VAC device using wall suction, 400 cc Hemovac and combined slow release silver dressing materials. We compared 5 consecutive patients' data treated by commercial ready-made VAC device(Group A) with 11 consecutive patients' data treated by modified VAC device combined with silver dressing materials(group B) from September 2004 to June 2007. Granulation tissue growth, wound discharge, wound culture and wound dressing expenses were compared between the two groups. Results: In comparison of results, no statistical differences were identified in reducing rate of wound size between group A and B. Wound discharge was significantly decreased in both groups. Modified VAC device with silver dressing materials showed advantages of convenience, cost effectiveness and bacterial reversion. Conclusion: In combination of modified VAC device and silver dressing materials, our results demonstrated the usefulness of managing chronic open wounds superimposed bacterial infection, cost effectiveness compared with traditional VAC device and improvement of patient mobility.

• 대한지역사회영양학회지
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• 제22권2호
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• pp.145-158
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• 2017

Objectives: The importance of kimchi as a traditional food in Korean cuisine has gradually decreased due to rapid industrialization, economic growth and changes in dietary patterns in Korea. This study aimed to examine the shifts in kimchi consumption by region and by income level between 2005 and 2015 in Korea. Methods: Data from the Korea National Health and Nutrition Examination Surveys III (2005) and VI (2015) were used in the study (n=15,558). Intake of kimchi was estimated using a single 24-hour dietary recall. The sample weights were applied in all analyses to reflect population estimates. All statistical analyses were carried out by using SPSS IBM Statistics 20. Results: Kimchi intake has significantly decreased by 27.6 g/day per capita during the last decade in Korea; 25.0 g for males and 29.9 g for females, respectively. Over the past decade, the decline of kimchi intake has been particularly significant in Seoul, Busan, Incheon, Gyeonggi, and Gwangju, while there has been no significant change in males living in rural areas. The consumption of kimchi across all income levels has decreased, however, the decrease was higher in 'middle and low income level'. The amount of kimchi consumption in 2015 was the highest in 'low income level'. The results were similar after adjusting for gender and age. Conclusions: For the past decade, the overall intake of kimchi in Korea has decreased, however, it has been found that the decrease of kimchi intake for males living in the rural areas was not significant. Therefore, in order to keep our traditional kimchi culture and promote a balanced diet including kimchi for Korean, it is necessary to develop more efficient policies and approaches. A variety of dishes using kimchi should be developed, besides merely serving kimchi with rice as a side dish, to increase the consumption of kimchi.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권4호
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• pp.1307-1323
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• 2014

With the exhaustion of global IPv4 addresses, IPv6 technologies have attracted increasing attentions, and have been deployed widely. Meanwhile, new applications running over IPv6 networks will change the traditional traffic characteristics obtained from IPv4 networks. Traditional models obtained from IPv4 cannot be used for IPv6 network monitoring directly and there is a need to investigate those changes. In this paper, we explore the flow features of IPv6 traffic and compare its difference with that of IPv4 traffic from flow level. Firstly, we analyze the differences of the general flow statistical characteristics and users' behavior between IPv4 and IPv6 networks. We find that there are more elephant flows in IPv6, which is critical for traffic engineering. Secondly, we find that there exist many one-way flows both in the IPv4 and IPv6 traffic, which are important information sources for abnormal behavior detection. Finally, in light of the challenges of analyzing massive data of large-scale network monitoring, we propose a group flow model which can greatly reduce the number of flows while capturing the primary traffic features, and perform a comparative measurement analysis of group users' behavior dynamic characteristics. We find there are less sharp changes caused by abnormity compared with IPv4, which shows there are less large-scale malicious activities in IPv6 currently. All the evaluation experiments are carried out based on the traffic traces collected from the Northwest Regional Center of CERNET (China Education and Research Network), and the results reveal the detailed flow characteristics of IPv6, which are useful for traffic management and anomaly detection in IPv6.

• 한국건설관리학회논문집
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• 제16권2호
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• pp.38-45
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• 2015

건설위험관리 프로세스의 위험분석단계는 정성적 및 정량적 위험분석단계로 세분화되는데, 정성적 위험분석이 주된 역할을 하고 정량적 위험분석은 보조적인 역할을 담당한다. 그런데 이제까지 정성적 위험분석단계에서 위험도를 계량화하는 방법으로 적용되어온 위험도 산정 공식은 발생확률과 영향을 단순히 곱하는 식으로서 결과 값들은 저위험도에 편중된 분포를 나타낸다. 이에 대한 대안으로 고위험도에 편중되는 산정 공식이 제안되었으나, 위험도 분포가 저위험도 또는 고위험도에 편중하게 될 경우 대부분의 자연현상이 정상분포에 가깝다는 통계학적인 일반논리에 부합되지 않는다. 본 연구에서는 위험도의 분포가 중앙에 집중되는 새로운 위험도 산정방법을 제안하고자 한다. 이를 통해 위험도 분포가 자연현상의 정상분포와 유사한 형식으로 표현됨으로써 위험에 대응하는 수준이 고위험도 또는 저위험도에 치우지지 않고 중간위험도에서 합리적으로 선택될 수 있게 하고자 한다. 나아가 위험도 산정방법에 대한 추가적인 선택사항을 제공함으로써 위험분석 방법의 융통성과 합리성을 향상시키는데도 일조하고자 한다.

• 대한한의학회지
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• 제19권1호
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• pp.220-233
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• 1998

This study was made to objectify the principle of oriental medical prescriptions so that we could obtain the principle and the formulation of them For that purpose, we analysed the formula and rule of 205 prescriptions recorded in Gum-goe-yo-rak, which have a few of components, and are widely used in clinical from ancient times to these days. At first we classified those prescriptions by their effect. Then we re-classified the herbs of the effect groups into four natures (cold, hot, warm and cool) and five kinds of flavors (sour, bitter, sweet, acrid and salty). And we classified the herbs into three grades - superior, medium, and inferior - which were used in Shen Nong's Herbal Classic. By these means, we statistically evaluated the prescriptions recorded in Gum-goe-yo-rak based on the Four Regular Components(Monarch, Minister, Assistant, and Laborer). As a result we could obtain some facts about the prescriptions recorded in Gum-goe-yo-rak, those are what kind of herbal material was used frequently and distribution of the natures flavors and grades according to thier effects. And we are sure that these results can be great help for establishment of fundamental formulation of theory of traditional herbal medicinal polyprescription.

• Smart Structures and Systems
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• 제25권1호
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• pp.23-35
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• 2020

It is important to take into account the thermal behavior in assessing the structural condition of bridges. An effective method of studying the temperature effect of long-span bridges is numerical simulation based on the solar radiation models. This study aims to develop a time-varying solar radiation model which can consider the real-time weather changes, such as a cloud cover. A statistical analysis of the long-term monitoring data is first performed, especially on the temperature data between the south and north anchors of the bridge, to confirm that temperature difference can be used to describe real-time weather changes. Second, a defect in the traditional solar radiation model is detected in the temperature field simulation, whereby the value of the turbidity coefficient t_u is subjective and cannot be used to describe the weather changes in real-time. Therefore, a new solar radiation model with modified turbidity coefficient γ is first established on the temperature difference between the south and north anchors. Third, the temperature data of several days are selected for model validation, with the results showing that the simulated temperature distribution is in good agreement with the measured temperature, while the calculated results by the traditional model had minor errors because the turbidity coefficient t_u is uncertainty. In addition, the vertical and transverse temperature gradient of a typical cross-section and the temperature distribution of the tower are also studied.

• 디지털융복합연구
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• 제17권12호
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• pp.35-44
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• 2019

본 연구는 굿 거버넌스 논의에 기반한 원조의 영향에 대한 경험적 분석을 통해 전통공여국 OECD DAC 원조와 수원국 부패 간 관계를 분석한다. 이를 위하여 본 연구는 2000년부터 2014년까지 OECD DAC 원조 데이터, 부패인식 지수, 세계은행 데이터, 민주주의 지수를 중심으로 고정효과모형과 PCSE 모형을 사용하였다. 통계 분석을 시행한 결과 OECD DAC의 원조가 아프리카 수원국의 부패에 부정적 영향을 주고 있음을 확인하였다. DAC의 원조는 아프리카 국가들의 부패 정도를 심화시키는 영향을 주며, 특히 민주주의가 발전한 국가에서 그 영향의 정도가 커짐을 확인할 수 있다. 이는 OECD DAC의 굿 거버넌스 중심의 원조와 수원국 부패 간 관계에 대해 보다 종합적인 후속 연구가 필요하다는 점과 함께, 지역적 특수성을 고려하였을 때에는 일반적으로 인식하고 있는 민주주의 제도 발전의 긍정적 효과가 오히려 역전되어 나타날 수 있다는 점을 제기한다.

• 한국컴퓨터정보학회논문지
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• 제20권2호
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• pp.157-167
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• 2015

알코올과 알코올 중독증을 문화적 면에서 연구하는 문헌이 있다. 하지만 사회 내부제도가 변화되면서 음주문화를 변화시킨 정부의 문화개입이 발생하였음에도 불구하고 음주행위나 알코올 중독증의 영향에 관한 연구는 거의 없다고 볼 수 있다. 이 문제는 본 연구의 주목적이다. 연구목적을 달성하기 위하여 연구사례로 몽골을 선정하였으며 몽골의 전통 음주문화 혹은 음주예절의 측정을 위해 몽골의 역사적 근원을 연구해서 1인당음주량, 알코올중독 관련 70년간의 인지도조사, 통계 등 다양한 연구자료에 의해 분석을 하였다. 각종 연구자료 분석 시 몽골의 청년 음주문화가 그들의 조상들이 엄숙하게 따르던 전통음주문화와 맥락부터 많이 변화된 것을 관찰할 수 있었다. 연구결과에 의하면 현대화 관련 음주문화 변화와 음주(소비)간에는 상관성이 있는 것으로 나타났다.