웹페이지의 스마트폰 최적화를 위한 규칙기반 자동변환기법

박제원(Jeawon Park),최재현(Jae-Hyun Choi) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.8

As the demand for the mobile web services has increased due to the expansion of smart phone, there has been great interest in the study of converting the PC web pages into the mobile ones for the smart phones. Hence there is an increase of business which converts PC web pages’ Markup, Style sheet, Java Script so that they can be used in smart phone web browsers. This study introduces the converting technique of PC webpages using XML rules and hierarchical structure of DOM. This converting technique, based on XML rules, analyzes and structurizes the PC web pages and indexes the structured data after deriving, and it relocates the data in accordance with the layout of the smart phone web pages. The test result shows the loading speed of converted smart phone web browser is faster than loading PC web pages on the smart phone web browsers. It is because the data volume of PC web page is reduced by more than 3 times when using the converting technique. It is highly expected that the automatic converting technique introduced by this study will be widely adopted by the business doing the converting services of current PC web pages into the smart phone web pages.

방사선 치료시 배경분리알고리즘을 이용한 비젼모니터링 시스템에 대한 연구

박기용,최재현,박제원,Park, Kiyong,Choi, Jaehyun,Park, Jeawon 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.2

The normal tissue in radiation therapy, to minimize radiation, it is most important to maximize local tumor control rates in intensive research the exact dose to the tumor sites. Therefore, the initial, therapist accuracy of detecting movement of the patient fatigue therapist has been a problem that is weighted down directly. Also, by using a web camera, a difference value between the image to be updated to the reference image is calculated, if the result exceeds the reference value, using the system for determining the motion has occurred. However, this system, it is not possible to quantitatively analyze the movement of the patient, the background is changed when moving the treatment bed in the co-therapeutic device was not able to sift the patient. In this paper, using a alpah(${\alpha}$) filter index is an attempt to solve these limitations points, quantifies the movement of the patient, by separating a background image of the patient and treatment environment, and movement of the patient during treatment It senses only, it was possible to reduce the problems due to patient movement. 방사선 치료에 있어서 정상 조직에는 방사선을 최소화 하고 종양 부위에 정확한 방사선을 집중해서 조사하여 국소 종양 제어율(Local Tumor Rate)을 극대화 하는 것이 가장 중요하다. 이를 위해서 초기에는 치료사들이 직접 환자의 움직임을 감지했으나 정확도가 떨어지고 치료사들의 피로가 가중되는 문제점들이 있었다. 또한 웹카메라를 이용하여 기준영상과 갱신되는 영상의 차분값을 계산하여 그 결과가 기준값을 초과하면 움직임이 발생한 것으로 판단하는 시스템을 사용하였다. 그러나 이 시스템은 환자의 움직임을 정량적으로 분석할 수 없고 토모치료기의 치료베드 이동시 변화되는 배경을 환자와 가려낼 수 없었다. 이에 본 논문에서는 이러한 한계점을 해결하고자 지수가중치(${\alpha}$) 필터를 이용하여 환자의 움직임을 정량화 하고 환자와 치료환경의 배경이미지를 분리하여 치료중 환자의 움직임만을 감지하여 환자의 움직임으로 인한 문제를 줄일 수 있었다.

감성분석과 SVM을 이용한 인터넷 악성댓글 탐지 기법

홍진주,김세한,박제원,최재현,Hong, Jinju,Kim, Sehan,Park, Jeawon,Choi, Jaehyun 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.2

The Internet has brought lots of changes to us sharing information mutually. However, as all social symptom have double-sided character, it has serious social problem. Vicious users have been taking advantage of anonymity on the Internet, stating comments aggressively for defamation, personal attacks, privacy violation and more. Malicious comments on the Internet are creating the biggest problem regarding unlawful acts and insults which occur on the Internet. In order to solve the issues, several studies have been done to efficiently manage the comments. However, there are limitations to recognize modified malicious vocabulary in previous research. So, in this paper, we propose a malicious comments detection technique by improving limitation of previous studies. The experimental result has shown accuracy of 87.8% providing higher accuracy as compared to previous studies done. 인터넷을 통해 많은 정보를 얻고 많은 정보를 타인에게 제공하면서 개인의 삶의 양식에 큰 변화를 가져다주었다. 모든 사회 현상에는 양면성이 있듯이 인터넷 익명성을 이용하여 명예훼손, 인신공격, 사생활 침해등과 같이 악의적으로 이용하여 사회적으로 심각한 문제를 양산하고 있다. 인터넷 게시판의 악성댓글은 인터넷에서 발생하는 불법적인 언사나 행위와 관련하여 가장 대두되고 있는 문제이다. 이러한 문제를 해결하기 위해 많은 연구가 진행되고 있지만 악성댓글에 사용된 단어들은 변형이 많이 나타나기 때문에 기존 연구들은 이러한 변형된 악성어휘를 인식하는데 한계점이 존재한다. 이에 본 연구에서는 기존 연구의 한계점을 개선하여 악성댓글을 탐지하는 기법을 제안한다. 실험결과 87.8%의 정확도를 나타냈으며, 이는 기존 연구들에 비해 상당히 발전된 결과로 볼 수 있다.

GPU기반의 보안 로그 이벤트 고속필터링기법에 대한 실증적 연구

안혜선(Hyeseon An),박제원(Jeawon Park),최재현(Jaehyun Choi),이남용(Namyong Lee) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.9

Big data problem are expanded to a general issue not limited to some special areas. Security Management Systems put their data on relational DB. But if the number or size of data becomes bigger, its processing time is dramatically increased as their size, it isnt suitable structure for collecting big log data and may violates security policy. In this paper, in order to analyze big security logs and events in real time without high-cost of updating the system, we try a high speed filtering methods based on GPU(Graphic Processing Unit). After experimentation, it showed about 3,000 times more faster filtering execution time and there are more improvements possible if we can process maximum execution lines more than 30 lines by solving the memory assignment problem of GPU shared memory.

자바환경에서 효과적인 안드로이드 서비스의 외부협업을 위한 원격서비스호출프레임워크

최재현(Jaehyun Choi),박제원(Jeawon Park) 한국IT서비스학회 2013 한국IT서비스학회지 Vol.12 No.2

Recently, smart phones have been widely used in the world. Android phones especially provide existing mobile phone features as well as capability of running enterprise applications and web applications by using services. However, such a linkage has limitations to use Android phones as client devices, there is difficulties in providing services by utilizing characteristics of Android. To solve this problem, we need to invoke services by each other. Currently, the Android platform currently supports inter-process communication IPC. However, there is a limitation that Android services just can invoke remote calls. In this paper, we propose a framework to invoke Android services in java environments. For doing this, we propose methods to make services public and to invoke services in using remote calls and communication methods between java environments and Android.

서비스기반의 소프트웨어 유지보수 성숙도 모델

김창재(Changjae Kim),박제원(Jeawon Park) 한국정보기술학회 2014 한국정보기술학회논문지 Vol.12 No.5

Lets current software maintenance concept of service-oriented paradigm has evolved according to the characteristics of software maintenance processes and maturity models for quantitative performance measures need to be developed. According to the attributes of software maintenance and development and maintenance of a maturity model fits improve guidance characteristics developed and applied . In order to provide high quality maintenance services, follow presented guidelines and project characteristics, the research about selection process is necessary. In this study, 34 software maintenance projects at institute K are the target of research. We perform the survey, and according to projects’ characteristics, process area and procedures for developing indicators are presented. Software Maintenance Maturity Model is developed through detailed indicators to assess achievement of indicators, maintenance is being performed to determine the level of maturity. It could be used as guidelines for the improvement.

개인과 기기특성이 스마트 워치 사용의도에 미치는 영향에 관한 실증적 연구

이정우(Jungwoo Lee),최재현(Jaehyun Choi),박제원(Jeawon Park) 한국정보기술학회 2014 한국정보기술학회논문지 Vol.12 No.11

As smart watch has been released as a product recently, market competition started among global manufacturing companies. This paper uses the technology acceptance model(TAM) to deduce some decision factors affecting to the potential consumers intention for using smart watch. This study sets an individual and device characteristic as exogenous variables after advanced research. There are a social image, an innovativeness and a cost rationality in the individual characteristic. A functionality, an aesthetic and an wearability are in the device characteristic. Based on a designed research model, questionnaire surveying from people then the final 201 results were analysed through confirmatory factor analysis and structural equation model. This paper has a scientific and practical importance for determining which factors affect to the potential customers to use smart watch under the initial market formation circumstances.

Open API 기반의 버그 추적 시스템의 설계 및 구현

김기윤(Gi-Yoon kim),김창재(Changjae Kim),박제원(Jeawon Park) 한국정보기술학회 2014 한국정보기술학회논문지 Vol.12 No.8

A terms bugs derived from Mark II computer that was released in 1994 has taken on greater importance in software development and IT services in these days. Especially as software has been becoming enlarged and complicated, so that most researchers emphasize on the management of bugs more and more. In other words, it is an essential for a successful software development with stable services to find a bug, correct it and apply the result code to the system. Bug tracking systems are defined as a tool for finding a bug and correcting it and this system is developing through various techniques and methods. However most of the paradigm for these bug systems have possible problems in management, because almost the whole systems are set up and operational in each software (not entire software). As a solution this paper suggests a method that one system based on Open API saves and manages errors occurred from many programs under control. Designed systems in this paper expect to be adapted and utilized efficiently for proper software in which many programs are coexistent.

개인과 유비쿼터스 특성이 u-Health 서비스 사용의도에 영향을 미치는 요인에 관한 실증적 연구

홍진주(Jinju Hong),공민서(Minseo Gong),최재현(Jaehyun Choi),박제원(Jeawon Park),신용태(Yongtae Shin) 한국정보기술학회 2015 한국정보기술학회논문지 Vol.13 No.9

The medical expenses in Korea is about three times higher than the average 1.3% in OECD countries. u-health service has received attention as one of the solutions to these problems. However, despite domestic u-Health industry began since last 2002, domestic u-Health industry is a situation that is stagnant. There are various analysis for causes. One is a lack of user’s perception. This paper presented the factors affecting the use of u-Health service based on the technology acceptance model(TAM). Based on a designed research model, questionnaire surveying from people then the final 123 results were analysed through Exploratory factor analysis and multiple regression analysis. It has a practical importance and scientific for determining which factors affect to the potential customers to use u-Health service under the initial market formation circumstances.