• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2011년도 추계학술발표대회
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• pp.613-616
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• 2011

Nowadays Web Services are one of the most rapidly developed technologies and have become platform for e-ecommerce as well as B2B model. Therefore, when Web Services use SOAP as a protocol for communication, their security should be considered. However, those SOAP messages are prone to XML attacks that can create a foundation for typical faults and make it vulnerable to use. Unfortunately, recent researches established that solutions to deal with these problems have several limitations. In this paper, we explore attacks on SOAP messages and also provide confidentiality and integrity solutions. It is a tolerant scheme which is able to automatically detect and fix typical faults occurred in SOAP messages to combat with the security threats in order to improve its reliability.

• 대순사상논총
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• 제20권
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• pp.273-315
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• 2009

The purpose of this study is to examine the mutual similarities between DaesoonJinri(大巡眞理) and Taoism thought as well as the thought mechanism of DaesoonJinri based on contents of the four tenets of DaesoonJinri (EumYangHapDeok(陰陽合德), SinInJoHwa(神人調化), HaeWonSangSaeng(解冤相生), DoTongJinGyeong(道通眞境)). DaesoonJinri attached a lot of importance to Taoism among traditional thought such as Confucianism, Buddhism, Taoism. This study will check out the clues from the major texts of Taoism. To do this, this study kept an aye on the Taoism texts such as Laozi, Zhuangzi, Taipingjing, etc. The significant implication of this study is only contextual similarities between DaesoonJinri and Taoism Philosophy. Therefore, this study will provide the preliminary data to researcher searching for the directly ideological contact point between DaesoonJinri and Taoism thought.

• ETRI Journal
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• 제36권1호
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• pp.159-162
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• 2014

In this letter, we present low-temperature grown GaAs (LTG-GaAs)-based photoconductive antennas for the generation and detection of terahertz (THz) waves. The growth of LTG-GaAs and the annealing temperatures are systematically discussed based on the material characteristics and the properties of THz emission and detection. The optimum annealing temperature depends on the growth temperature, which turns out to be $540^{\circ}C$ to $580^{\circ}C$ for the initial excess arsenic density of $2{\times}10^{19}/cm^3$ to $8{\times}10^{19}/cm^3$.

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2003년도 하계학술연구발표회 및 한.일 공동심포지엄
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• pp.154-155
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• 2003

Substituting transition metals such as V, Cr, Mn, Fe, Co and Ni into semiconductors have been of interest because of its unique electrical and magnetic properties. It was reported that the magnetoresistance(MR) ratio of CrGe was 1.7% and 1 4% at 120 K in fields of 0.5 and 5 T, respectively. The MR ratio of FeGe was 19% at 180K. The electrical resistivity of CrGe changed according to Cr concentration. In this talk, we report transport properties of V-doped Ge single crystals with several different V concentrations. The carrier densities and mobilities will be determined from Hall measurement.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 춘계학술발표대회
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• pp.586-589
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• 2012

Web Services have been utilized in a wide variety of applications and have turned into a key technology in developing business operations on the Web. Originally, Web Services can be exploited in an isolated form, however when no single Web Service can satisfy the functionality required by a user, there should be a possibility to compose existing services together in order to fulfill the user requirement. However, since the same service may be offered by different providers with different non-functional Quality of Service (QoS), the task of service selection for Web Service composition is becoming complicated. Also, as Web Services are inherently unreliable, how to deliver reliable Web Services composition over unreliable Web Services should be considered while composing Web Services. In this paper, we propose an approach on a QoS-aware Web Service selection for reliable Web Service composition. In our approach, we select and classify Web Services using Decision Tree based on QoS attributes provided by the client. Service classifier will improve selection of relevant Web Services early in the composition process and also provide flexibility to replace a failed Web Services with a redundant alternative Web Services, resulting in high availability and reliability of Web Service composition. We will provide an implementation of our proposed approach along with efficiency measurements through performance evaluation.

• 대한의생명과학회지
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• 제26권4호
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• pp.275-287
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• 2020

Since its introduction in the forensic field, quantitative PCR (qPCR) has played an essential role in DNA analysis. Quality of DNA should be evaluated before short tandem repeat (STR) profiling to obtain reliable results and reduce unnecessary costs. To this end, various human DNA quantification kits have been developed. Among these kits, the PowerQunat® System was designed not only to determine the total amount of human DNA and human male DNA from a forensic evidence item, but also to offer data about degradation of DNA samples. However, a crucial limitation of the PowerQunat® System is its high cost. Therefore, to minimize the cost of DNA quantification, we evaluated kit performance using a reduced volume of reagents (1/2-volume) using DNA samples of varying types and concentrations. Our results demonstrated that the low-volume method has almost comparable performance to the manufacturer's method for human DNA quantification, human male DNA quantification, and DNA degradation index. Furthermore, using a reduced volume of regents, it is possible to run 2 times more reactions per kit. We expect the proposed low-volume method to cut costs in half for laboratories dealing with large numbers of DNA samples.

• 대한의생명과학회지
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• 제27권2호
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• pp.105-110
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• 2021

Short Tandem Repeats (STR) analysis which characterized by genetic polymorphism has been widely used in the forensic genetic fields. Unfortunately, mutation occurred in various STR loci could make it difficult to interpret STR data. Thus, the mutation rate of STR loci plays an important role for the data interpretation in human identification and paternity test. To verify the mutation of the STR loci in the Korean population, 545 trio sets (father, mother, and child) were analyzed with two commercial STR kits that include the 23 autosomal STR loci (D1S1656, TPOX, D2S441, D2S1338, D3S1358, FGA, D5S818, CSF1PO, D7S820, D8S1179, D10S1248, TH01, D12S391, VWA D13S317, D16S539, D18S51, D19S433, D21S11, D22S1045, SE33, Penta E and Penta D). As a result, 36 mutations were observed in 14 STR loci. The types of mutation were also classified by the increase or decrease of the alleles. The overall mutation rate was 1.4×10^-3, and the paternal mutation rate was four times higher than that of the maternal. This study will provide more detailed criterion for human identification by the mutation rate of STR loci in the Korean population.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2009년도 춘계학술발표대회
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• pp.1307-1310
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• 2009

Web services provide the possibility of dynamically integrating distributed service components scattered over the Internet to fulfill sophisticated business demands. However due to today's wide variety of services offered to perform a specific task, it's essential that users are supported in the eventual selection of appropriate services. An example of web services for which selection of appropriate services will be crucial is Auto Repair Services. Selecting proper service from a variety of Auto Part Shops would be result of delivering high-quality service and minimizing Auto Repair Service customer's waiting time. Therefore, in this research to assist selecting proper service, we present Functional-Level Mediator and illustrate its usage in matching customer's and web service's goals. Five matching cases have been analyzed and results from experiment have been shown. Also, taking advantage of implementing multithreaded web services which reflects concurrent activity in the real world more naturally, we have significantly minimized customer's waiting time at Auto Repair Service.

• 한국콘텐츠학회논문지
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• 제17권12호
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• pp.64-76
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• 2017

생물활성탄 공정은 수처리 과정에서 유기 오염물질을 효과적으로 제거하는 것으로 알려져 있으며, 활성탄에 부착된 세균의 생체량과 종은 오염물질 제거 과정에서 중요한 역할을 한다. 본 연구에서는 입상활성탄 공정에서 활성탄조의 깊이와 가동 기간에 따른 세균 생체량의 변화에 대해 확인해 보았다. 또한 입상활성탄공정 전단에 자외선 (UV) 공정 전처리를 하였을 때 세균 생체량의 변화를 확인하였다. 결과를 살펴보면 활성탄조의 깊이가 깊어질수록 세균 생체량이 감소하는 것을 확인하였다. 그리고 UV 공정 전처리를 한 경우, 공정 기간이 증가할수록 세균 생체량이 감소하는 것을 확인하였다. 그러나, UV 공정 전처리를 하지 않은 경우에는 공정 기간에 따른 세균 생체량의 변화가 나타나지 않았다. 본 연구 결과를 토대로 수처리 실공정에서 생물활성탄 공정 관리에 대한 유용한 정보를 제공할 것이라 여겨진다.

• 한국항공우주학회지
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• 제49권11호
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• pp.901-907
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• 2021

본 연구에서는 다양한 유도탄 노즈 형상과 유동조건에 대한 공력계수를 예측할 수 있는 인공신경망 기반의 공력 산출 기법을 제시한다. Missile DATCOM를 통해 유도탄 노즈 형상, 유동조건, 유도탄 공력계수로 구성된 학습 데이터셋을 구축하였다. 인공신경망의 예측 성능을 향상시키기 위해 데이터 전처리 과정으로 데이터 정규화를 진행하였고, 과대적합을 방지하기 위해 신경망 학습 과정 중 드롭아웃 기법을 사용하였다. 신경망을 통해 학습하지 않은 유도탄 노즈 형상과 유동조건에 대한 공력계수를 예측하였고 이를 Missile DATCOM 해석 결과와 비교하여 신경망의 성능을 검증하였다. 그 결과 본 연구에서 구축한 신경망은 학습하지 않은 유도탄 노즈 형상과 유동조건에 대한 유도탄 공력계수를 정확하게 산출할 수 있음을 확인하였다.