• 한국정보과학회논문지:소프트웨어및응용
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• 제31권10호
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• pp.1418-1429
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• 2004

본 논문에서는 자질 기반 구 구조 문법 형식의 자연어 문법 개발에 필요한 환경을 제공하는 GrammE를 소개한다. 문법 개발 단계에서는 텍스트 형식의 문법을 인터프리트하여 구문 분석을 하기 때문에 문법 수정 후 바로 문법을 테스트할 수 있어 문법 개발이 용이해 진다. 일단 문법 개발이 끝나면 GrammE에 포함된 문법 컴파일러를 이용하여 C++로 쓰여진 구문 분석기 프로그램을 생성할 수 있다. 이렇게 해서 만들어진 구문 분석기는 구문 분석을 필요로 하는 여러 가지 자연어 처리 시스템에 활용할 수 있다. GrammE는 언어 독립적인 시스템이며, 현재까지 한국어 문법과 중국어 문법을 개발하는 데 사용되었다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권8호
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• pp.1989-2009
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• 2013

How to discover router vulnerabilities effectively and automatically is a critical problem to ensure network and information security. Previous research on router security is mostly about the technology of exploiting known flaws of routers. Fuzzing is a famous automated vulnerability finding technology; however, traditional Fuzzing tools are designed for testing network applications or other software. These tools are not or partly not suitable for testing routers. This paper designs a framework of discovering router protocol vulnerabilities, and proposes a mathematical model Two-stage Fuzzing Test Cases Generator(TFTCG) that improves previous methods to generate test cases. We have developed a tool called RPFuzzer based on TFTCG. RPFuzzer monitors routers by sending normal packets, keeping watch on CPU utilization and checking system logs, which can detect DoS, router reboot and so on. RPFuzzer' debugger based on modified Dynamips, which can record register values when an exception occurs. Finally, we experiment on the SNMP protocol, find 8 vulnerabilities, of which there are five unreleased vulnerabilities. The experiment has proved the effectiveness of RPFuzzer.

• 한국문헌정보학회지
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• 제34권1호
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• pp.133-153
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• 2000

본 논문은 1999년 4월에 출시된 Acrobat 4.0에서 지원하는 PDF(Portable Document Format)를 이용해서 고문헌의 원문을 디지털화하여, 웹상에서 이용자가 고문헌의 원문을 손쉽게 검색할 수 있도록 하기 위한 방안에 대해 연구한 것이다. 이전의 Acrobat 3.0판은 한글 지원에 문제가 많았으나, 이번에 개정된 4.0판에서는 다국어폰트의 지원으로 한글, 중국어, 일본어 등의 PDF변환이 가능해졌다. 따라서 <한글97>(속칭<아래아 한글>)로 구축된 고문헌의 원문파일을 PDF로 변환은 물론 편집도 가능하게 되었다. PDF파일의 뷰어인 Acrobat Reader는 웹상에서 무상으로 다운로드 받을 수 있으므로, 이 PDF를 이용하여 고문헌의 원문을 디지털화 한다면, 향후 개선되어야 할 문제가 있긴 하지만, 이용자가 인터넷상에서 손쉽게 고문헌의 원문을 검색할 수 있게 될 것이다.

• Corrosion Science and Technology
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• 제19권2호
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• pp.66-74
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• 2020

In this paper, the author's team has carried out a comparative experimental study on the corrosion characteristics of Q235 steel commonly used in large-scale storage tanks under the specific bottom water environment found with Russian and Daqing crude oil. It was found that there is a certain degree of uniform or local corrosion on the tank floor depending on the kind of bottom water. The bottom water corrosion of Daqing crude oil is a uniform corrosion caused by carbon dioxide. While the Russian crude oil bottom water corrosion is clearly local corrosion caused by co-corrosion of carbon dioxide and hydrogen sulfide, here the corrosion rate is obviously higher than that caused by Daqing crude oil. There are two modes of storage tank inspection and maintenance that have been currently adopted by Chinese refining and chemical enterprises: a regular inspection mode and a API581-2016 risk-based detection mode. These modes have been effectively combined to form an intelligent tank inspection and maintenance mode, software tools to support this intelligent inspection and maintenance management have been developed.

• Wind and Structures
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• 제18권1호
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• pp.83-101
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• 2014

Lamps installed on stay cables of cable-stayed bridges may alter the configuration of circular cross section of the cables and therefore result in aerodynamically unstable cable vibrations. The background of this study is a preliminary design of lamp installation on the cable-stayed He-dong Bridge in Guangzhou, China. Force measurements and dynamic response measurements wind tunnel tests were carried out to validate the possibility of cable galloping vibrations. It is observed that galloping will occur and the critical wind velocity is far less than the design wind velocity at Guangzhou City stipulated in Chinese Code. Numerical simulations utilizing software ANSYS CFX were subsequently performed and almost the same results as the wind tunnel tests were obtained. Moreover, the pressure and velocity contours around cable-lamp model obtained from numerical simulations indicated that the upstream steel wire in the preliminary design is the key factor for the onset of the galloping vibrations. A modification for the preliminary design of lamp installation, which suggests to remove the two parallel steel wires, is proposed, and it effectiveness is validated in further wind tunnel tests.

• Journal of Acupuncture Research
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• 제36권4호
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• pp.251-255
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• 2019

Background: Low-level laser therapy (LLLT) including laser acupuncture (LA) has been widely used to treat chronic low back pain (CLBP), but there is no critically appraised evidence of the potential benefits. The purpose of this protocol for a systematic review was to enable the evaluation of the effectiveness of LLLT including LA for non-specific CLBP to identify the potential benefits. Methods: The electronic databases MEDLINE (PubMed), Embase (Ovid), the Cochrane Central Register of Controlled Trials (CENTRAL), Korean medical databases (KoreaMed, KMBASE, KISS, NDSL, KISTI, OASIS), the Chinese database (CNKI), and Japanese databases (CiNII, J-STAGE) are recommended. Results: Randomized controlled trials in LLLT including LA should be included in the searches. All data synthesis and subgroup analyses should be conducted using a Review Manager software. The Cochrane risk of bias tool can be used to evaluate methodological quality of the studies. A risk ratio or mean difference with a 95% confidence interval will show the effects of LLLT including LA. Conclusion: The primary outcome would be pain intensity and functional status/disability due to low back pain. The secondary outcome would be a global measurement of recovery or improvement, quality of life and adverse event.

• 대한한방부인과학회지
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• 제32권3호
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• pp.227-244
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• 2019

Objectives: To evaluate the effectiveness and safety of application of Traditional East Asian Herbal Medicine (TEAM) in the treatment of Atrophic Vaginitis (AV). Methods: Randomized Controlled Trials (RCTs) were obtained from PubMed, Cochrane Library, Embase, CNKI, RISS, NDSL, and KISS. The risk of bias was assessed by using Cochrane's risk of bias tool, and RevMan 5.3 software was used. Results: 26 RCTs with 3,162 patients were identified and reviewed. Among them, 21 RCTs observe the effect of integrated traditional Chinese and Western medicine. 23 RCTs reported treatment groups was statistically effective than control groups in the study. Also, the recurrence rate was estimated in 10 RCTs and was lower than control groups. 12 studies observed adverse events (AEs) and severe AEs were not reported. Conclusions: This review suggested that TEAM was safe and effective in the treatment of AV. TEAM may also decrease the recurrence rate. However, this could not be proven conclusively. To ensure evidence-based clinical practice, well-designed trials with larger sample sizes are needed.

• 한국컴퓨터정보학회논문지
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• 제24권9호
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• pp.127-134
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• 2019

The purpose of this study is to understand the purchasing intentions of Chinese consumers to Huawei and other domestic brands in the context of the current Sino-US trade war. Taking the mass consumers as the research object, this paper designs Likert five-level scale to investigate consumers' purchase intention of domestic products in the future, and uses SPSS 23.0 and AMOS 23.0 statistical software to analyze and process statistical data. Using questionnaire survey and exploratory factor analysis, this paper constructs a model to analyze the impact of consumer ethnocentrism on consumers' purchase intention. By summarizing the overall purchasing intention of consumers, it is concluded that the development of domestic brands in the context of trade war is facing difficulties and challenges in the future, but at the same time, we must seize the opportunity of consumers' ethnocentrism under this background to positively influence their purchasing intention, make up for shortcomings, eliminate overcapacity, and seek greater development through technological innovation.

• 아태비즈니스연구
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• 제10권1호
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• pp.73-86
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• 2019

Since its launch, WeChat has been changing the Chinese lifestyle, changing the traditional way of distribution, and changing the way companies market with the combination of information innovation and New Media. Now, WeChat plays an indispensable role in peopl's daily lives, not only in chatting software, but also in shopping, delivery, ordering, payment, and games. This study was centered on people who have used WeChat and around these backgrounds, planned study models. Through prior research, the purpose of the research is to explore the factors influencing the effects of the WeChat platform on MPR and explore the media effects of advertising attitude between WeChat platform features and MPR effects and provide basic material on its continued development. The research has shown that the reliability and diversity of the WeChat platform has a significant impact on both advertising attitude and purchase intention and propaganda intention of MPR effects. Advertising attitude has a positive impact on purchase intention and propaganda intention, and advertising attitude is shown to have a mediated effect between the WeChat platform and the MPR effects. The results of this study suggest the theoretical enlightenment of "continuous and stable development of the WeChat platform", and it is expected that marketing development plans of various social platforms will provide basic materials.

• Earthquakes and Structures
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• 제17권1호
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• pp.39-48
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• 2019

This paper presents an experimental study on a 1/2 scale steel frame with archaized-style under the pseudo-dynamic loading. Four seismic waves, including El Centro wave, Taft wave, Lanzhou wave and Wenchuan wave, were input during the test. The hysteresis characteristic, energy dissipation acceleration response, displacement response, strength, stiffness and strain were analyzed. Based on the experiment, the elastoplastic dynamic time-history analysis was carried out with the software ABAQUS. The stress distribution and failure mode were obtained. The results indicate that the steel frame with archaized-style was in elastic stage when the peak acceleration of input wave was no more than 400 gal. Under Wenchuan wave with peak acceleration of 620 gal, the steel frame enters into the elastoplastic stage, the maximum inter-story drift was 1/203 and the bearing capacity still tended to increase. During the loading process, Dou-Gong yielded first and played the role of the first seismic fortification line, and then beam ends and column bottom ends yielded in turn. The steel frame with archaized-style has good seismic performance and meets the seismic design requirement of Chinese code.