• 치과방사선
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• 제24권2호
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• pp.361-368
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• 1994

Radiographic planning is needed for implant placement in order to determine implant length, jaw bone volume, anatomical stucture and so on. Radiographic examination includes conventional radiography, conventional tomography and CT scan. The most accurate mesurement can be obtained from CT scan. For the cross-sectional view of mandible, CT scan reconstruction is generally needed. But the cross-sectional view of mandible can be reformed by personal computer. This study was performed to examine the clinical usefulness of reformed image using personal computer in comparison with CT scan reconstructed image. CT axial slices of 4 mandibles of 4 volunteers were used. Digital imaging system was composed of Macintosh Ⅱ ci computer, high resolution Sony XC-77 CCD camera, Quick Capture frame grabber board and 'NIH Image' program. Seven reconstructed cross-sectional images within CT machine(CT group) were obtained. And seven reformed cross-sectional images(PC group) after digitization of CT axial slices into the personal computer were obtained. PC group was compared with CT group in the objective and subjective aspects. The results were as follow: 1. Measurement of mandibular height & width in both group showed insignificant difference(P>0.05). 2. Subjective assessment of the mandibular canal in both group showed insignificant difference(P>0.05). 3. Image reformation using personal computer could provide panoramic view, which could not be obtained in CT scan reconstruction.

• 한국컴퓨터정보학회논문지
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• 제20권7호
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• pp.109-114
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• 2015

With the realization that the police's personal information gathering activities can violate the authority to decide one's information guaranteed by the Constitution, many people are interested in the legal terms of the police's information gathering and handling. The police's personal information gathering activities imply both the purpose of public welfare and order and the risk of violation of basic rights of citizens, their effective balance is critical. In this respect, this study reviews the principle of proportion as a principle of control of personal information gathering and handling (police intelligence activities) by state to discuss its implications on legislation.

• 한국컴퓨터정보학회논문지
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• 제23권9호
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• pp.141-156
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• 2018

The purpose of this study is how personal information violation risks affect the intention to use domestic cryptocurrency services. VAM(Value based Adoption Model) model is validated as a theoretical background, selecting perceived ease of use, perceived usefulness and perceived security as a benefit factors, and considers perceived cost, technical complexity, and risk of personal information violation risks as sacrifice factors. The method of this study used questionnaire survey to collect 150 data on user's perception on cryptocurrency services, and also performed a structural equation modeling method using by AMOS 23. The result of this paper shows that all hypotheses are accepted statistically significant except 2 hypothesis. This research is concluded that perceived value is affected on statistically positive impact on perceived ease of use, perceived usefulness and perceived security, and negative impact on risk of personal information violation risk, not statistically perceived fee and technical complexity.

• 한국소음진동공학회논문집
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• 제21권4호
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• pp.339-345
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• 2011

The purpose of this study is reduction the vibration of the personal computer by developing the vibration absorber and damper. The eccentricity of the cooling fan causes the vibration of the computer. We designed the material properties of the vibration absorber and damper by FEM model within operation frequencies of the cooling fan. We experiment the overall analysis and system analysis by using a laser vibrometer. The result shows that the proposed dynamic absorber and damper reduce the vibration of the personal computer.

• 대한의용생체공학회:의공학회지
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• 제11권2호
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• pp.257-268
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• 1990

A system has been developed for monitoring the effect of neuromuscular blocking frugs and the neuromuscular function during anesthesia and surgery. This system is composed of software and hardware, the latter are nerve stimulator, force transducer, interface board(preamplifier, filter, peripheral input/output) and personal computer (apple ll) , the former are programmed in ASSEMBLY and BASIC language. The nerve stimulator which is controlled by personal computer is capable of delivering single shocks at o.)Hz, train of four at 2Hz and tetanic stimulation at 30, 100, 200Hz. The response, adduction of the thumb, is sensed by the force transducer. The output of the force transducer Is amplified, filtered, converted digital signal and then processed by the per- sonal computer. The personal computer quantia4es twitch and traln of four tesponse and calculates the 74 ratio (Ta/Tl )between the first and fourth response of train of four. This ratio is used to estimate the level of the neuromuscular block. This system has reaserch potential for determining the effect of newer neuromuscular blocking drugs for comparlsion with presently used drugs of alternatively, for delerminig the effects of blocking drugs in altered physilogical states.

• 한국컴퓨터정보학회논문지
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• 제22권6호
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• pp.41-48
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• 2017

All the personal information controllers or processors collecting, processing and storing personal information through the entry into force of the EU GDPR (General Data Protection Regulation) are required to provide the basic principle of privacy by design at all stages of developing products or services throughout the organization, And to ensure that the basic rights of the subject of personal information are protected and that internal control techniques are provided to prevent any abuse or leakage. We will review the regulations and countermeasures required by the GDPR for video information with serious privacy problems, and propose a solution.

• 한국컴퓨터정보학회논문지
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• 제24권9호
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• pp.43-49
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• 2019

Today, with the development of the internet of things, wearable devices related to personal health care have become widespread. Various global information and communication technology companies are developing various wearable health devices, which can collect personal health information such as heart rate, steps, and calories, using sensors built into the device. However, since individual health data includes sensitive information, the collection of irrelevant health data can lead to personal privacy issue. Therefore, there is a growing need to develop technology for collecting sensitive health data from wearable health devices, while preserving privacy. In recent years, local differential privacy (LDP), which enables sensitive data collection while preserving privacy, has attracted much attention. In this paper, we develop a technology for collecting vast amount of health data from a smartwatch device, which is one of popular wearable health devices, using local difference privacy. Experiment results with real data show that the proposed method is able to effectively collect sensitive health data from smartwatch users, while preserving privacy.

• 한국정보전자통신기술학회논문지
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• 제13권6호
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• pp.575-589
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• 2020

데이터를 기반으로 한 비즈니스가 폭발적으로 성장함에 따라 개인정보가 포함된 데이터의 중요성이 확대되고 있다. 국내의 경우 데이터 3법이 시행됨에 따라 개인정보가 포함된 데이터 활용 시의 규제 개선 및 명문화를 통해 기업들이 개인정보를 보다 적극적으로 활용할 수 있게 되었다. 이러한 상황에서 서비스 이용에 따른 실명 인증 및 개인정보 제공과 관련해 개인정보 제공을 최소화할 수 있는 자기주권신원기술이 주목받고 있다. 특히, 최근 개인정보 이용에 따른 기록의 명확성 및 증명을 위해 자기주권신원 기능 이용 시 블록체인을 활용한 서비스 및 연구들이 활발하게 이루어지고 있다. 본 논문에서는 국내 자기주권신원 서비스의 특징 및 블록체인 기반 자기주권신원기술과 관련된 연구 현황 및 내용을 분석함으로써 향후 데이터 3법 시대의 개인정보 주권을 강화하기 위한 자기주권신원기술 기반 연구 방향을 제시하고자 한다.

• 한국컴퓨터정보학회논문지
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• 제23권11호
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• pp.185-191
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• 2018

The purpose of this study is to present effective basic data for business management through analysis of importance and performance of personal information protection of the elderly welfare center workers. For this purpose, the questionnaire on the protection of personal information was reconstructed based on the diagnostic level of the personal information security management level of the public institution and the questionnaire was conducted on 105 employees of the elderly welfare center in Chungbuk area. Based on the responses to the importance and the degree of performance of the personal information protection of the elderly welfare center employees, technical statistics and corresponding sample T-tests were conducted and the importance-performance analysis (IPA) was used. Followings are the results of this study: First, there is a statistically significant difference between the importance and the implementation of the management system for the protection of personal information of the workers in the elderly welfare center, establishment and implementation of protection measures, establishment and implementation of infringement measures. Second, IPA analysis on the protection of personal information of the workers in the elderly welfare center shows that the establishment and implementation of protection measures are the areas to maintain good performance. Third, in IPA analysis of the sub-factors of the personal information protection of the workers in the welfare center of the elderly, in the construction and management of the management system, in performing the role of the personal information protection officer and establishing and implementing protection measures, The factors of prevention of information disclosure and exposure and the safe use and management of personal information processing system were analyzed as areas requiring intensive improvement. This study is meaningful as a basic research that can raise the awareness of the personal information protection of the workers in the elderly welfare center and induce the improvement of the related work.

• 컴퓨터교육학회논문지
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• 제8권5호
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• pp.73-83
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• 2005

현재 초등학생들의 인터넷 이용률은 급격히 증가하고 있는 반면, 아이디와 비밀번호를 무분별하게 관리하고 있으며, 그에 따른 정보 유출의 심각성을 전혀 인식하지 못하고 있다. 본 논문에서는 초등학생 대상으로 개인정보 관리의 중요성을 인식시키기 위한 교수학습 방법을 설계하였다. 설계한 교수학습 방법은 역할놀이 모형을 기반으로 하였으며 초등학교 3학년을 대상으로 현장 수업에 적용하였다. 수업한 결과를 분석하여 설계한 교수학습 방법이 기존의 강의법보다 더 효과가 있음을 보인다.