• 가정과삶의질연구
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• 제24권6호
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• pp.33-45
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• 2006

The purpose of this study was to find the characteristics of the housing needs of apartment purchasers in derision-making steps. The survey was took place from June to July, 2003 in the Daegu area. The data were collected from 1,187 married women using questionnaires and reponses were analyzed by SPSS Window Program. The results were as follows : 1. In the phase when housing problems are recognized the motives for moving were related to the floor space of the housing unit and the residential environment. 2. In the phase of acquiring information on apartments, the basis of the informations was mostly collected through conversations at model houses, from relatives, experts and real estate agents. 3. In the phase of considering alternative plans for apartment purchases, the factors considered were convenient interior space composition and educational environment for children. 4. In the phase of apartment purchase, the important factors was input from relatives and experts. 5. In the phase of post-purchase evaluation most discontent was related to privacy issues, interior space composition, and educational environment for children.

• 한국컴퓨터정보학회논문지
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• 제23권2호
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• pp.45-51
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• 2018

In this paper, we propose a Designed and Developed home router management system. Through the fourth industrial revolution and development of IoT technology, now people can experience a wide range of IoT related services at their workplace or daily lives. At the industrial site, IoT devices are used to improve productivity such as factory automation, and at home, IoT technology is used to control home appliances from a remote distance. Usually IoT device is integrated and controlled by the router. Home router connects different IoT devices together at home, however when security issues arise, it can invade personal privacy. Even though these threats exist, the perception for home router security is still insufficient. In this paper, we have designed and developed home router management system using DEVS methodology to promote the safe use of home router. Through the DEVS methodology, we have designed the system and developed the mobile application. This management system enables users to set up security options for home router easily.

• 한국정보통신학회논문지
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• 제16권5호
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• pp.939-946
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• 2012

최근 개인정보 유출 사건과 관련된 사고가 사회적 이슈가 되고 있다. 민감한 개인정보를 암호화하여 데이터를 보호한다면 정보 유출이 확실히 줄어들 것이다. 본 논문에서는 데이터 보호를 위한 기존의 연구 방법을 분석하고, 블룸필터 방식에 버킷을 혼합한 복합적인 방법으로 민감한 정보를 암호화하기 위하여 제안하였다. 가장 많이 사용되는 튜플 암호화 방식에 버킷인덱스 방식을 적용한 방식이다. 이 방식은 버킷정보로 인하여 데이터의 분포가 노출된다는 단점을 가진다. 이러한 버킷인덱스 방식의 데이터 노출 특성을 방지하기 위하여, 본 논문에서는 버킷인덱스와 블룸필터를 적용한 복합적인 암호화방식을 제안한다. 제안된 방식의 특징은 데이터의 노출을 방지할 뿐 아니라 데이터베이스의 검색성능을 향상시킨다.

• International Journal of Contents
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• 제9권2호
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• pp.14-21
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• 2013

Current smartphone authentication systems are deemed inconvenient and difficult for users on remembering their password as well as privacy issues on stolen or forged biometrics. New authentication system is demanded to be implicit to users with very minimum user involvement being. This idea aims towards a future model of authentication system for smartphones users without users realizing them being authenticated. We use the most frequent activity that users carry out with their smartphone, which is the calling activity. We derive two basics related interactions that are first factor being arm's flex (AF) action to pick a phone to be near ones' ears and then once getting near ear using second factor from ear shape image. Here, we combine behavior biometrics from AF in first factor and physical biometrics from ear image in second factor. Our study shows our dual-factor authentication system does not require explicit user interaction thereby improving convenience and alleviating burden from users from persistent necessity to remember password. These findings will augment development of novel implicit authentication system being transparent, easier, and unobtrusive for users.

• 정보처리학회지
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• 제11권6호
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• pp.56-75
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• 2004

In this article we address some system characteristics and challenging issues in developing Context-aware Middleware for Ubiquitous Computing. The functionalities of a Context-aware Middleware includes gathering context data from hardware/software sensors, reasoning and inferring high-level context data, and disseminating/delivering appropriate context data to interested applications/services. The Middleware should facilitate the query, aggregation, and discovery for the contexts, as well as facilities to specify their privacy policy. Following a formal context model using ontology would enable syntactic and semantic interoperability, and knowledge sharing between different domains. Moddleware should also provide different kinds of context classification mechanical as pluggable modules, including rules written in different types of logic (first order logic, description logic, temporal/spatial logic, fuzzy logic, etc.) as well as machine-learning mechanical (supervised and unsupervised classifiers). Different mechanisms have different power, expressiveness and decidability properties, and system developers can choose the appropriate mechanism that best meets the reasoning requirements of each context. And finally, to promote the context-trigger actions in application level, it is important to provide a uniform and platform-independent interface for applications to express their need for different context data without knowing how that data is acquired. The action could involve adapting to the new environment, notifying the user, communicating with another device to exchange information, or performing any other task.

• International Journal of Knowledge Content Development & Technology
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• 제9권1호
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• pp.19-42
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• 2019

This study examined activities involving the finding, organizing, managing, and re-finding of information by knowledge workers in Kuwait. This research also conducted a review of the tools needed for effective personal information management (PIM) and assessed perceptions about improving PIM through Internet use. Data were collected through semi-structured interviews conducted among 26 graduates of the Department of Information Studies at Kuwait University. These participants are currently employed in different sectors engaged in a variety of information-related activities. This study's findings indicated that participants gathered different types of information from a variety of sources. This information was stored using several devices and services, including desktop computers, shared drives, clouds, bookmarked websites, e-mail correspondence, and favorites lists. Participants organized information in personal folders according to categories such as subject/topic, time, project, document type, and geographical region. Preferred methods for information re-finding included searching by keyword and browsing through folders. Interviewees reported problems of information overload, fragmentation, and anxiety. Most were active in social media via mobile device, while some of them used Siri or Ask Google to retrieve information. Tools used for PIM included calendars, tasks, schedules, e-mail management tools, clouds, and social networking tools. Participants reported that the Internet helped with personal information management practices, but that some privacy issues arose in this context.

• 한국융합학회논문지
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• 제10권1호
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• pp.25-33
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• 2019

스마트시티 시스템에서 다루는 데이터는 개인의 사생활이나, 공공재적인 요소가 많기 때문에 보안이 중요하며, 따라서 스마트시티 시스템에서 보안에 대한 연구는 필요하다. 본 논문에서는 3 티어(Tier)로 구성된 스마트시티 시스템을 위한 보안 요소들을 정의하고, 각각에 필요한 기술들에 대해서 기술한다. 또한, 스마트시티 시스템에서 가장 중요한 이슈 중 하나인 도시구성요소와 미들웨어와의 보안 관리를 위하여 스마트시티 미들웨어에 보안계층을 설계하고 구현한 내용을 소개한다. 인프라보안계층은 블록 암호 (Block Cipher) 알고리즘과 메시지 다이제스트 알고리즘을 기반으로 구성되었으며, 이를 통해 데이터의 기밀성과 무결성을 보장하고, 정책서버를 통한 장치 접근 관리를 하여 인가된 장치만 스마트시티 구성요소를 관리할 수 있도록 한다.

• 정보보호학회논문지
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• 제22권6호
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• pp.1301-1313
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• 2012

최근에 개인정보 유 노출에 의한 프라이버시 침해로 인해 개인정보보호의 중요성은 나날이 증가하고 있으며, 이를 해소하기 위한 가장 효과적인 방안중의 하나로 데이터 암호화가 회자되고 있다. 그러나 현재의 데이터 암호화 방식은 시스템 성능 지연과 어플리케이션 변경 이슈로 인하여 실무에 보편화되지 못하고 있는 실정이다. 따라서 본 논문에서는 최근에 화두가 되고 있는 데이터 암호화 관련 기술을 살펴보고, 어플리케이션 변경이 필요치 않는 Plug-In 방식의 데이터 암호화 솔루션으로 오라클 데이터베이스를 암호화할 때 성능에 미치는 영향을 실험하였다. 아울러 데이터 암호화시 데이터베이스 성능 저하 및 어플리케이션 변경을 최소화하는 데이터 암호화 기법을 제안하고 제안된 기법의 효율성을 분석하였다.

• International Journal of Computer Science & Network Security
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• 제22권9호
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• pp.59-62
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• 2022

In the scientific research, the object of research is a complex of legal relations, which are formed by the use of modern digital technologies. The subject of this work is the novelties of Ukrainian and foreign legislation, norms of international law aimed at regulating social relations in the field of digital rights, as well as doctrinal provisions and materials of law enforcement practice. Within the framework of this work, two types of digital rights are distinguished, those that exist in the law of Ukraine, and the issues of law that apply to legal relations, regarding the turnover of each of them, are considered. Examples of law applied in foreign countries are given for comparison. On the basis of a comprehensive study of the legal framework and positions of scientists, the prospects for the development of legal regulation of digital rights were noted.

• Journal of Platform Technology
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• 제10권4호
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• pp.82-90
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• 2022

최근 메타버스에 대한 사회적 관심이 높아짐에 따라 다양한 메타버스 플랫폼 및 서비스가 등장하고 있으며, 가상 세계의 수많은 가능성과 엄청난 잠재력을 보여주고 있다. 이러한 메타버스는 하나의 유형에만 국한되는 것이 아니라 경계를 허물며 가상융복합경제 형태의 서비스로 진화하며 발전하고 있다. 이에 따라 메타버스에서의 다양한 보안에 대한 이슈가 대두되고 있다. 메타버스는 가상 공간에서 모든 활동이 이루어지므로 프라이버시 침해나 가상 자산 탈취 또는 사기 등의 다양한 문제가 발생할 수 있다. 본 논문에서는 메타버스에서 안전한 서비스를 제공하기 위한 서비스 보안 모델을 제안하였다. 이를 위해 메타버스 프레임워크에서의 보안 위협을 분석하고, 위협을 방지하기 위한 보안 서비스 모델을 제안하였다. 제안 모델의 보안성을 평가하여 효과적으로 메타버스에서 안전한 서비스가 가능함을 보였다.