당뇨병성 궤양에 사용되는 레이저의 특성에 대한 연구

강기완,강자연,정민정,김홍준,서형식,장인수,Kang, Ki-wan,Kang, Ja-yeon,Jeong, Min-jeong,Kim, Hong-jun,Seo, Hyung-sik,Jang, In-soo 대한한방안이비인후피부과학회 2016 한방안이비인후피부과학회지 Vol.29 No.4

Objectives : One of major complications of diabetes, diabetic ulcer is also one of the main reasons for amputation, and the prevalence rate is 4-10%. Laser therapy is widely used for leg ulcer and diabetic ulcer, and it is known to improve wound epithelialization, cellular content, and collagen deposition. The purpose of this study is to investigate the properties of the laser and the spectrum of laser instruments for diabetic ulcer. Methods : We performed literature search using the PubMed, Cochrane, CINAHL and Web of science for the data in English. In addition, other databases were checked for different languages such as OASIS and NDSL for the literature in Korean, CNKI in Chinese, and CiNii and J-STAGE written in Japanese. We excluded all review article and experimental studies, and only clinical studies using laser or light emitting diode (LED) for diabetic ulcer were selected. Results : A total twenty papers were selected. Different light sources were used as follows: LED, HeNe, InGaAlP, GaAlAs, GaAs, CO2, and KTP. The number of LED studies was 9, and HeNe laser was 7, and InGaAlP and GaAlAs laser was 2, GaAs, CO2, and KTP laser was 1 for each. Various energy density of the clinical study were reported. Conclusions : It is suggested that to select appropriate laser type and give the adequate output power to treat diabetic ulcer. Further evaluation and research for the condition of laser therapy to treat diabetic ulcers are warranted.

고혈압에 대한 천마구등음의 효과 : 체계적 문헌고찰과 메타분석

강기완,강자연,정민정,김홍준,선승호,장인수 대한한방내과학회 2018 大韓韓方內科學會誌 Vol.39 No.1

Objective: The purpose of this study is to investigate the effect of Cheonmagudeung-eum (CGE) for essential hypertension by systematic review and meta-analysis. Methods: The period of literature search was until October 30, 2016, and 14 electronic databases were utilized as search engines. The evaluation for the risk of bias (RoB) was conducted by using the Cochrane Risk of Bias Tool. The meta-analysis was performed by synthesizing outcome data, including total effective rate (TER), systolic blood pressure (SBP), diastolic blood pressure (DBP), and the incidence of adverse events. Result: There were a total of 64 RCTs using CGE on adult essential hypertension. In the RoB evaluation, most of the items were unclear, and the qualities of studies were rated low. The concurrent treatment of CGE and antihypertensive drug (AHD) showed a significant hypotensive effect since the risk ratio (RR) of TER was 1.17 times (95% CI 1.14, 1.20, p<0.01) higher than that of AHD alone. In addition, the mean difference (MD) appeared low as 8.73 mm/Hg in SBP (95% CI -11.36, -6.09, p<0.01) and 5.81 mm/Hg in DBP (95% CI -7.50, -4.12, p<0.01). Conclusion: Through this study, it was identified that the combined treatment of CGE and AHD on hypertension would be more effective than that of AHD treatment alone. However, due to the low quality of the selected original articles, the significance of this conclusion is somewhat limited, and we hope that this would be complemented through more rigorous RCTs in the future.

과색소침착질환에 대한 침구의학적 처치 및 분류체계에 대한 고찰

강기완,김의별,김민지,장인수 대한침구의학회 2016 대한침구의학회지 Vol.33 No.1

Objectives : The objective of this study is to review external approaches using acupuncture and related treatments of hyperpigmentation disorders and their classification in traditional medicine. Methods and Results : Hyperpigmentation was recorded for the first time in Treatise on the Pathogenesis and Manifestations of All Diseases published in 610 A.D. This suggests that the symptom has already been recognized as an independent disease in East Asia for more than 1,400 years. Over the course of several centuries, there has been a significant evolution in the traditional treatments for hyperpigmentation. There are many different types of therapy, including body acupuncture, intradermal acupuncture, ear acupuncture, ear acupressure, blood-letting treatment, pharmacopuncture, plum-blossom needle therapy, burning acupuncture therapy, moxibustion, and guasha. In addition, the traditional classification of hyperpigmentation has been changing shape. However, no attempts have been made to establish the academic linkage between the modern classification of hyperpigmentation disorders and the traditional one, on account of different concepts and names of the ailment. This study was designed in an attempt to identify the linkage of the categorization of the Korean Standard Classification of Disease (KCD) and the traditional classification. Conclusions : Through this literature review, we found that there has been a significant evolution in the treatment of hyperpigmentation disorders in East Asia. Traditional medical treatment for skin disease, including hyperpigmentation, is expected to be further developed with the advancement of science and technology.

SD-MTD: Software-Defined Moving-Target Defense for Cloud-System Obfuscation

강기완,서정택,백승훈,Chul Woo Kim,박기웅 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.3

In recent years, container techniques have been broadly applied to cloud computing systems to maximize their efficiency, flexibility, and economic feasibility. Concurrently, studies have also been conducted to ensure the security of cloud computing. Among these studies, moving-target defense techniques using the high agility and flexibility of cloud-computing systems are gaining attention. Moving-target defense (MTD) is a technique that prevents various security threats in advance by proactively changing the main attributes of the protected target to confuse the attacker. However, an analysis of existing MTD techniques revealed that, although they are capable of deceiving attackers, MTD techniques have practical limitations when applied to an actual cloud-computing system. These limitations include resource wastage, management complexity caused by additional function implementation and system introduction, and a potential increase in attack complexity. Accordingly, this paper proposes a software-defined MTD system that can flexibly apply and manage existing and future MTD techniques. The proposed software-defined MTD system is designed to correctly define a valid mutation range and cycle for each moving-target technique and monitor system-resource status in a software-defined manner. Consequently, the proposed method can flexibly reflect the requirements of each MTD technique without any additional hardware by using a software-defined approach. Moreover, the increased attack complexity can be resolved by applying multiple MTD techniques.

고가용성 보장형 국방 클라우드 시스템 도입 전략

강기완,박준규,이상훈,박기웅 한국차세대컴퓨팅학회 2019 한국차세대컴퓨팅학회 논문지 Vol.15 No.3

Cloud computing markets are rapidly growing as cost savings and business innovation are being carried out through ICT worldwide. In line with this paradigm, the nation is striving to introduce cloud computing in various areas, including the public sector and defense sector, through various research. In the defense sector, DIDC was established in 2015 by integrating military, naval, air and military computing centers, and it provides cloud services in the form of IaaS to some systems in the center. In DIDC and various future cloud defense systems, It is an important issue to ensure availability in cloud defense systems in the defense sector because system failures such as network delays and system resource failures are directly linked to the results of battlefields. However, ensuring the highest levels of availability for all systems in the defense cloud can be inefficient, and the efficiency that can be gained from deploying a cloud system can be reduced. In this paper, we classify and define the level of availability of defense cloud systems step by step, and propose the strategy of introducing Erasure coding and failure acceptance systems, and disaster recovery system technology according to each level of availability acquisition. 세계적으로 ICT(Information & Communication Technology)를 통한 비용절감 및 업무혁신이 이루어지면서 클라우드 컴퓨팅(이하 클라우드) 시장이 급성장하고 있다. 이러한 패러다임에 맞춰 우리나라는 다양한 연구를 통해 공공부문, 국방 분야 등 다양한 분야에 클라우드를 도입시키기 위해 노력하고 있다. 특히 국방 분야에서는 2015년 육·해·공·군 전산소를 통합하여 국방통합데이터센터(DIDC, Defense Integrated Data Center)를 설립하였으며, 센터 내 일부 시스템을 대상으로 IaaS(Infrastructure as a Service) 형태의 클라우드 서비스를 제공하고 있다. 국방통합데이터센터 및 추후 도입될 국방 분야의 다양한 클라우드 시스템에서 네트워크 지연, 시스템 자원 고장 등과 같은 시스템 장애가 발생하게 되면 전장의 결과와 직결되기 때문에 국방 부문의 클라우드 시스템에 가용성을 보장하는 것은 중요한 이슈라 할 수 있다. 그러나 국방 클라우드의 모든 시스템을 대상으로 최고 수준의 가용성을 확보하는 것은 비효율적일 수 있으며, 클라우드 시스템 구축으로 얻을 수 있었던 효율성이 감소할 수 있다. 본 논문에서는 국방 클라우드 시스템의 가용성 확보 수준을 단계별로 분류 및 정의하고, 각 가용성 확보 수준에 따른 Erasure Coding 및 장애 허용 시스템, 재난 복구 시스템 기술 도입 전략을 제안한다.

인진오령산(茵蔯五?散)을 투여한 알코올성 간경변 환자 치험 1례

강기완,이종훈,Kang, Ki-wan,Lee, Jong-hoon 대한한방내과학회 2016 大韓韓方內科學會誌 Vol.37 No.1

Objectives: To introduce the effect of traditional Korean medicine (TKM) treatment with Injinoryeong-san on alcoholic liver cirrhosis (ALC).Methods: A 37-year-old man with a history of alcohol ingestion for the past five years was diagnosed with ALC based upon his clinical symptoms, sonogram results, and laboratory studies. The patient received TKM treatment with acupuncture, moxibustion, and Injinoryeong-san in parallel to Western medicine for two weeks. The clinical assessment was monitored based upon changes in the Child-Pugh score and ultrasonography, body weight, and abdominal circumference for measuring the amount of ascites.Results: The patient’s clinical symptoms improved with decreases in abdominal circumference and body weight. Ultrasound revealed a regression of the amount of ascites in the abdominal cavity. Laboratory results also improved significantly, and the Child-Pugh score increased from class B to A.Conclusions: This case report showed a significant improvement of ALC with relatively simple treatment for only a short period and therefore supported the potential of TKM treatment in ALC.

태양인(太陰人) 청혈강기탕(淸血降氣湯) 투여 후 호전된 시멘트 접촉 만성 피부염 환자 치험 1례

강기완,김민지,강세영,Kang, Ki-wan,Kim, Min-ji,Kang, Sei-young 대한한방내과학회 2015 大韓韓方內科學會誌 Vol.36 No.1

Objectives : The purpose of this report is to investigate the effect of Taeeumin Cheonghyeolgangki-tang on chronic contact dermatitis caused by cement. Methods : A 52-year-old male patient was diagnosed with contact dermatitis with the Questionnaire for Sasang Constitutional Classification-II (QSCC-II) as well as the four methods of diagnosis (四診), and treated with Taeeumin Cheonghyeolgangki-tang (qīngxuèjiàngqí-tāng). We observed redness and scaling on both palms, and recorded photographs of any changes during the inpatient and outpatient treatment period. Results : The symptoms of contact dermatitis on both palms were significantly improved. Scaling and cracked skin disappeared and the redness almost resolved. Conclusions : Therefore, Taeeumin Cheonghyeolgangki-tang ( qīngxuèjiàngqí-tāng ) is effective on chronic contact dermatitis caused by cement.

당뇨병성 궤양의 레이저치료에 대한 효과 : 체계적 문헌고찰

강기완,강자연,정민정,김홍준,서형식,장인수,Kang, Ki-Wan,Kang, Ja-Yeon,Jeong, Min-Jeong,Kim, Hong-Jun,Seo, Hyung-Sik,Jang, In-Soo 대한한방안이비인후피부과학회 2017 한방안이비인후피부과학회지 Vol.30 No.4

Objectives : The purpose of this study is to investigate the effect of laser therapy for diabetic ulcer by using methods of systematic review. Methods : In this review, PubMed, Cochrane library, Web of Science, CNKI, CiNii, J-STAGE, NDSL and OASIS were used as the search engines. The search period is from the start date of the search engine to October 3, 2016. Randomized controlled trials(RCTs) using laser therapy for diabetic ulcer were searched and extracted by two independent researchers. Risk of bias(RoB) of Cochrane was used to assess methodological quality of studies. Results : Finally, five RCTs were selected. The follow-up period ranged from 15 days to 20 weeks. InGaAlP laser, GaAlAs laser and light emitting diode(LED) were used to treat diabetic ulcer. The clinical trials used sham laser irradiation or standard treatment as control in comparison to laser therapy. The endpoints included ulcer size, rate of healing and time to healing with follow-up period. The RCTs demonstrated therapeutic outcomes with no adverse effect. Most items of RoB were unclear and methodological quality was low. Conclusions : Our analysis suggests that laser therapy has therapeutic effects for diabetic ulcer. However, more systematic and stringent clinical trials will be required.

라즈베리파이를 통한 PLC 원격 조작 공격 시나리오 분석

강기완,서정택 순천향대학교 부설 산업기술연구소 2019 순천향 산업기술연구소논문집 Vol.25 No.1

In recent years, international conferences such as Black Hat have been continuously releasing information about vulnerabilities targeting industrial control systems. If the general industrial control system is infringed, only the financial loss of the company occurs. However, if the industrial infrastructure is violated, various problems such as public safety and social problems can occur simultaneously. Therefore, we analyzed how vulnerable PLC is mainly used in industrial control system, and derived attack scenario based on the analysis. In particular, we have changed the PLC configuration directly through the actual PLC and TIA Portal program, and have developed an attack scenario in which the PLC can be operated without going through the TIA Portal via Python 2.7.

멀티센서를 인지하는 다중 가상 캐릭터의 학습 공유시스템에 관한 연구

강기완,차명희,차명희 한국컴퓨터게임학회 2009 한국컴퓨터게임학회논문지 Vol.19 No.-