자락발관법(刺絡拔罐法)을 병행한 한방치료로 호전된 대상포진 후 신경통환자 치험 1례

김태연,김현정,김창환,Kim, Tae-Yeon,Kim, Hyun-Jung,Kim, Chang-Hwan 대한한방안이비인후피부과학회 2012 한방안이비인후피부과학회지 Vol.25 No.3

Objective : This study reports the effect of oriental medicine with depletion and cupping therapy on post-herpetic neuralgia(PHN) 1 case. Methods : We experienced one case of PHN treated by oriental medical treatment with depletion and cupping therapy. To evaluate the effectiveness of this treatment, we used the Visual Analogue Scale(VAS). Result : After the treatment the grade of VAS was decreased and clinical symptoms were improved. Conclusion : Oriental medicine with depletion and cupping therapy can be available for relieving symptoms related with PHN.

특발성(特發性) 동안신경마비(動眼神經麻痺)로 진단된 안검하수(眼瞼下垂) 환자 치험 1례

김태연,김현정,이창원,김창환,Kim, Tae-Yeon,Kim, Hyun-Jung,Lee, Chang-Won,Kim, Chang-Hwan 대한한방안이비인후피부과학회 2013 한방안이비인후피부과학회지 Vol.26 No.3

Objective : This study reports the effect of korean medicine on ptosis patient 1 case diagnosed as idiopathic oculomoter nerve palsy. Methods : We experienced one case of ptosis diagnosed as idiopathic oculomoter nerve palsy treated with herbal medicine and acupuncture. Ptosis and associated symptoms had been estimated with difference of both eye's interpalpebral fissure and VAS(Visual Analogue Scale). Result : After the treatment, symptoms were decreased and almost disappeared. In this case, difference of both eye's interpalpebral fissure decreased from 6mm to 1mm in a month. Conclusion : This study suggests that korean medicine is effective on ptosis diagnosed as idiopathic oculomoter nerve palsy.

한방병원에 입원한 두위 현훈 환자의 임상 분석

김태연,김기태,고흥,Kim, Tae-Yeon,Kim, Gi-Tae,Go, Heung 대한한방내과학회 2011 大韓韓方內科學會誌 Vol.32 No.3

Background : Vertigo is a very common complaint in clinical practice. The number of patients who complain of vertigo has been increasing due to rapid growth of the elderly population. This study was designed to review the clinical features and success of oriental medical treatment of positional vertigo. Methods : This observation was made on 70 subjects diagnosed with positional vertigo. They were hospitalized in the Semyung University Oriental Medicine Hospital. Results : The results were as follows 1. Female patients (82.9%) were more than male patients. The most common age group was 8th decade and the patients rapidly increased after the 5th decade of age. 2. The most common past history of positional vertigo was hypertension, the second was cerebral infarction, and the third was hyperlipidemia. 3. In the oriental medicine diagnosis, phlegm-dampness syndrome (痰濕交阻 眩暈) was the most common disease (92.9%), and in western medicine, BPPV was the most (82.9%). 4. In herbal medication, Banhabaekchulchunma-tang gami (45.7%) was the most commonly used, the second being Taeksa-tang (30%). 5. The vertigo score of 94.3% patients improved and none got worse. 6. In general characteristics, men over 64 years improved best. Past history had no effect on the improvement of vertigo. 7. The sooner patients visited hospital after onset, the shorter hospitalization time was. Conclusions : Vertigo attacks patients well in advanced age, with various causative diseases. Oriental medical treatments have considerable effects on positional vertigo, especially treated with Banhabaekchulchunma-tang gami and Taeksa-tang.

OCL에 바탕을 둔 메트릭 기술 언어를 이용한 메트릭의 표현 방법 개선

김태연,김윤규,채흥석,Kim, Tae-Yeon,Kim, Yun-Kyu,Chae, Heung-Seok 한국정보처리학회 2008 정보처리학회논문지D Vol.15 No.5

보다 정확한 표현을 위하여 Object Constraint Language(OCL)을 이용하여 메트릭을 기술하는 연구들이 있다. 그러나 OCL은 Unified Modeling Language(UML)에서 구조적 제약사항을 기술하기 위한 언어이기 때문에 메트릭을 표현하기에는 부적절하다. 본 논문에서는 이러한 문제점을 해결하기 위하여 메트릭을 표현하는 상위 수준의 언어인 Metric Description Language(MDL)을 제안한다. MDL은 복잡한 메트릭의 분할 기술, 집계함수, 대상간의 자동 탐색 기능을 지원하여 OCL의 복잡성 문제점을 해결하고 있다. 또한 본 논문은 MDL을 기술하고 UML 모델을 대상으로 메트릭의 자동 계산을 지원하는 도구를 개발하였다. 그리고 사례연구로 기존에 제시된 다양한 유형의 메트릭을 MDL로 기술하였으며 OCL로 표현된 메트릭보다 단순함을 확인하였다. Because most metricsin the literatures are described by a natural language, they can be interpreted in an ambigous manner. To cope with this problem, there are some researches to express based on Object Constraint Language(OCL). Because OCL has been proposed to describe structural constraintsfor Unified Modeling Language(UML) diagrams, it is difficult and awkward. In this paper, we propose Metric Description Language(MDL) which is a high level language to describe metrics. MDL supports a modular description of complex metrics, aggregation function, and automatic navigation between entities. Moreover, we develop MetriUs for describing metrics using MDL and supporting an automated computation for UML diagrams. In a case study, we have described a variety of existing metrics using MDL and found that MDL contributes to producing simpler expression of metrics than OCL.

대규모 동적 그룹에서 안전한 멀티캐스트를 위한 키 분배 프로토콜

김태연,김영균,Kim, Tae-Yeon,Kim, Young-Kyoon 한국정보처리학회 2002 정보처리학회논문지 C : 정보통신,정보보안 Vol.9 No.4

멀티캐스트 통신에서 그룹에 새로운 멤버가 가입하거나 기존의 멤버가 탈퇴하는 경우 멤버들이 사용중인 그룹 키는 갱신되어야 한다. 이러한 절차는 완전 전방향과 후방향 비밀성을 보장하기 의해 필요하다(8). 불행하게도, 빈번한 멤버쉽이 변경되는 대규모 그룹에서의 키 갱신은 그룹을 확장하는데 커다란 장애가 된다. 본 논문에서는 대규모 동적 그룹에서 그룹 키를 효율적으로 분배할 수 있는 새로운 방식을 제안한다. 기존의 안전한 멀티캐스트 프로토콜과는 달리, 제안된 프로토콜은 키 갱신의 빈도와 계산에 따른 오버헤드가 전체 그룹의 크기가 아닌 서브그룹의 크기에 따라 영향을 받기 때문에 대규모 그룹으로 확장이 가능하며, 그룹 접근 제어를 수행하는 서브그룹 관리자가 송신자에 의해 전송된 멀티캐스트 데이터에 접근할 수 없도록 하는 메카니즘을 제공한다. 또한 무선 컴퓨팅 환경에서 프라이버시를 보장할 수 있는 보안 서비스를 제공한다. Changing group key is necessary for the remaining members when a new member joins or a member leaves the group in multicast communications. It is required to guarantee perfect forward and backward confidentiality. Unfortunately, in large groups with frequent membership changes, key changes become the primary bottleneck for scalable group. In this paper, we propose a novel approach for providing efficient group key distribution in large and dynamic groups. Unlike existing secure multicast protocols, our protocol is scalable to large groups because both the frequency and computational overhead of re-keying is determined by the size of a subgroup instead of the size of the whole group, and offers mechanism to prevent the subgroup managers with group access control from having any access to the multicast data that are transfered by sender. It also provides security service for preserving privacy in wireless computing environments.

무선 센서 네트워크를 위한 새로운 키 사전 분배 구조

김태연,Kim, Tae-Yeon 한국정보처리학회 2009 정보처리학회논문지 C : 정보통신,정보보안 Vol.16 No.2

무선 센서 네트워크는 실세계에 광범위하게 배치되어 다양한 응용에 활용되고 있다. 센서 노드들 사이에 안전한 통신을 위한 필수 조건은 그들의 신뢰관계를 유지할 수 있는 세션키를 생성하는 것이다. 여기에서 고려되어야 할 문제는 어떻게 통신 노드들을 식별하고 키 동의 과정에서 상대방에게 키 정보의 노출을 최소화할 것인가이다. 현재 기존의 구조들에서는 몇 가지 취약점으로 인해 이러한 문제를 완전히 해결하지 못하고 있다. 따라서 본 논문에서는 다음과 같은 이점을 가진 새로운 키 사전 분배 프로토콜을 제안한다. 첫째, 노드간의 인증 서비스를 지원한다. 둘째, 공유하지 않은 키 스페이스의 식별자는 공개하지 않을 뿐만 아니라 공유하고 있는 식별자들의 공개를 최소화한다. 마지막으로 노드 공격에 대해 네트워크의 보안이 기존의 방식에 비해 강건하다. 그리고 성능과 보안 분석을 통해 제안된 구조가 무선 센서 네트워크에 적합함을 증명한다. Wireless sensor networks will be broadly deployed in the real world and widely utilized for various applications. A prerequisite for secure communication among the sensor nodes is that the nodes should share a session key to bootstrap their trust relationship. The open problems are how to verify the identity of communicating nodes and how to minimize any information about the keys disclosed to the other side during key agreement. At any rate, any one of the existing schemes cannot perfectly solve these problems due to some drawbacks. Accordingly, we propose a new pre-distribution scheme with the following merits. First, it supports authentication services. Second, each node can only find some indices of key spaces that are shared with the other side, without revealing unshared key information. Lastly, it substantially improves resilience of network against node capture. Performance and security analyses have proven that our scheme is suitable for sensor networks in terms of performance and security aspects.

LPS로 유도된 RAW 264.7 cell의 염증반응에서 MAPK 조절에 의한 가감당귀음자(加減當歸飮子)의 항염증 효과

김태연,Kim, Tae-Yeon 대한한방내과학회 2013 大韓韓方內科學會誌 Vol.34 No.4

Objectives : Danguieumja is a traditional medicinal prescription to treat skin disease. It was commonly used for the treatment of itching, chronic urticaria and atopic dermatitis in Korea by the addition or omission of several herbs. This study investigated the anti-inflammatory potential of Gagam-Danguieumja (GDE) water extract. Methods : We examined the effects of GDE on the lipopolysaccharide (LPS)-induced production of nitric oxide (NO) in a murine macrophage cell line, RAW 264.7 cells. Results : GDE inhibited production of NO in a dose dependent manner and also decreased the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2). As a possible molecular mechanism of anti-inflammatory effect increased phosphorylation of mitogen-activating protein kinases (MAPK) by LPS were blocked by GDE treatment. Conclusions : These results suggest that GDE has an anti-inflammatory therapeutic potential through the inhibition of MAPK phosphorylation, thereby decreasing the expression of pro-inflammatory genes.

Development of Transparent Conductive Oxide for Thin-film Silicon Solar Cells

김태연,명재민,Jeong Woo Lee,Won Seo Park,Seong-Kee Park,Ki Yong Kim,In Byeong Kang 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.2

Gallium-doped zinc oxide (GZO) films were deposited by DC magnetron sputtering using a GZO ceramic target at various substrate temperatures from 298 to 573 K in order to apply the films to amorphous silicon thin film solar cells. A low resistivity (~4.28 × 10−4cm) and a high transmittance (>90%) were obtained from the film deposited at 573 K. From X-ray diffraction, the films had columnar structures oriented along the c-axis, regardless of the substrate temperature. The lattice images and the grains were observed by using a field emission transmission electron microscope. A grain was overlapped by the crystallite of 10-15 nm, and the size of a grain was about 70 nm. Finally, the texturing conditions of the GZO films were optimized as a function of deposition temperature for potential applications to tandem solar cells and single junction amorphous silicon thin film solar cells.

진전을 동반한 Fahr Disease 환자 치험례

김태연,신우재,박유진,문주호,신선미,김기태,고흥,Kim, Tae-Yeon,Shin, Woo-Jae,Park, Yu-Jin,Moon, Joo-Ho,Shin, Seon-Mi,Kim, Gi-Tae,Go, Heung 대한한방내과학회 2011 大韓韓方內科學會誌 Vol.32 No.3

Fahr disease (FD) is a rare neurological disorder characterized by presence of abnormal and associated cell loss in certain areas of the brain, mostly in basal ganglia, thalamus, cerebellum and subcortical areas. Approximately two-thirds of the patients are symptomatic. The most common neurological manifestations include movement disorders, cognitive impairment, cerebellar signs and speech disorders. We report one case of estimated FD through brain computed tomography (bilateral calcifications of basal ganglia, thalamus, centrum semiovale, subcortical white matter of occipital lobes, cerebellum). At the first time of treatment, he complained of tremors in his upper limbs. We diagnosed the patient as deficiency of qi (氣) and movement of phlegm-heat-wind (痰熱風動) type according to symptoms and treated by herbs and acupuncture of oriental medicine. During treatments, we evaluated how well the oriental medical treatments were working using visual analogue scale (VAS) and amplitude of hands. After the oriental medical treatments about tremor, VAS dropped from 10 to 2 and amplitude of hands from 20 mm to 2 mm, but the ratio of brain calcifications was not changed. This study suggests that oriental medical treatments can be applicable to improve FD.

아웃소싱된 클라우드 데이터의 프라이버시를 보호하기 위한 멀티 키워드 검색 프로토콜의 개선

김태연,조기환,이영록,Kim, Tae-Yeon,Cho, Ki-Hwan,Lee, Young-Lok 한국정보처리학회 2017 정보처리학회논문지. 컴퓨터 및 통신시스템 Vol.6 No.10

최근 클라우드 컴퓨팅 환경에서 민감하거나 중요한 데이터를 아웃소싱하는 경향이 늘어나고 있다. 하지만 아웃소싱된 데이터의 프라이버시 보호는 매우 중요하다. 지금까지 단일 데이터 소유자와 다수의 데이터 사용자로 구성된 클라우드 컴퓨팅 환경에서 안전하고 효율적인 멀티 키워드 검색 구조들이 다양하게 제안되었다. Zhang 등은 다수의 데이터 소유자들과 사용자들로 연결된 클라우드 컴퓨팅 환경에서 멀티 키워드를 기반으로 하는 검색 프로토콜을 제안하였다. 그들의 프로토콜은 두 가지 문제점을 동시에 안고 있다. 하나는 클라우드 서버가 키워드 인덱스와 사용자의 트랩도어를 통해 데이터 파일들 간의 연관성을 불법적으로 추론할 수 있다는 것이고, 다른 하나는 키워드 인덱스의 크기만큼 복잡한 연산을 수행해야 하기 때문에 사용자의 요청에 대한 응답이 지연된다는 것이다. 본 논문에서는 클라우드 서버를 전적으로 신뢰할 수 없는 노드라는 가정 하에서 우리는 아웃소싱된 데이터의 프라이버시가 보호되는 개선된 멀티 키워드 기반 검색 프로토콜을 제안한다. 그리고 제안된 프로토콜이 Zhang의 프로토콜보다 데이터 파일들 간의 연관성 추론 측면에서 더 안전하고, 처리 시간의 측면에서 더 효율성이 높음을 실험을 통해 보인다. There is a growing tendency to outsource sensitive or important data in cloud computing recently. However, it is very important to protect the privacy of outsourced data. So far, a variety of secure and efficient multi-keyword search schemes have been proposed in cloud computing environment composed of a single data owner and multiple data users. Zhang et. al recently proposed a search protocol based on multi-keyword in cloud computing composed of multiple data owners and data users but their protocol has two problems. One is that the cloud server can illegally infer the relevance between data files by going through the keyword index and user's trapdoor, and the other is that the response for the user's request is delayed because the cloud server has to execute complicated operations as many times as the size of the keyword index. In this paper, we propose an improved multi-keyword based search protocol which protects the privacy of outsourced data under the assumption that the cloud server is completely unreliable. And our experiments show that the proposed protocol is more secure in terms of relevance inference between the data files and has higher efficiency in terms of processing time than Zhang's one.