• Journal of Information Processing Systems
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• 제10권3호
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• pp.483-490
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• 2014

In today's world, communication, the sharing of information, and money transactions are all possible to conduct via the Internet, but it is important that it these things are done by the actual person. It is possible via several means that an intruder can access user information. As such, several precautionary measures have to be taken to avoid such instances. The purpose of this paper is to introduce the idea of a one-time password (OTP), which makes unauthorized access difficult for unauthorized users. A OTP can be implemented using smart cards, time-based tokens, and short message service, but hardware based methodologies require maintenance costs and can be misplaced Therefore, the quick response code technique and personal assurance message has been added along with the OTP authentication.

• 한국식품영양학회지
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• 제27권3호
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• pp.393-399
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• 2014

The purpose of this study is to analyze the LOHAS tendency of new seniors' and its effects on the attitude and purchase intention for environmental-friendly food materials. Data were collected through a questionnaire survey from random sample of 162 senior customers in Seoul and Kyunggi area. The LOHAS tendency of new seniors can be divided into three factors; environmental-friendly, sustainability and sociality. Environmental problems affected the environmental-friendly factor the most while manufacturing techniques for sustainable products and recycling habits were key variables for the sustainability factor. The idea of companies sharing their value system of LOHAS tendency was the most significant for the sociality factor. Each of these LOHAS tendency factors influenced the purchase intention of the new seniors.

• 한국CDE학회논문집
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• 제11권5호
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• pp.384-392
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• 2006

In this research, the feasibility of distributed finite element analysis system with STEP and CORBA has been investigated. The enabling technologies such as CORBA and Java play key roles in the development of integrated and geographically distributed application software. In addition to the distribution of analysis modules, numerical solution process itself is again divided into parallel processes using multi-frontal method for computational efficiency. In contrast to the specially designed parallel process for specific hardware, CORBA-based parallel process is well suited for heterogeneous platforms over the network. The idea of Web-based distributed analysis system may be applied to the engineering ASP for design and analysis in the product development processes. We believe that the proposed approach for the analysis can be extended to the entire product development process for sharing and utilizing common product data in the distributed engineering environment, thus eventually provide basis for virtual enterprise.

• International Journal of Computer Science & Network Security
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• 제23권1호
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• pp.11-16
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• 2023

Vehicular networks are part of the next generation wireless and smart Intelligent Transportation Systems (ITS). In the future, autonomous vehicles will be an integral part of ITS and will provide safe and reliable traveling features to the users. The reliability and security of data transmission in vehicular networks has been a challenging task. To manage data transmission in vehicular networks, road networks are divided into clusters and a cluster head is selected to handle the data. The selection of cluster heads is a challenge as vehicles are mobile and their connectivity is dynamically changing. In this paper, a novel secure cluster head selection algorithm is proposed for secure and reliable data sharing. The idea is to use the secrecy rate of each vehicle in the cluster and adaptively select the most secure vehicle as the cluster head. Simulation results show that the proposed scheme improves the reliability and security of the transmission significantly.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.4-5
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• 2015

Owning to rapid infrastructure development, Asia is experiencing dramatic economic growth. There are not a few cases in which, however, economic growth is achieved by increasing the external diseconomy. Pursuit of sustainable development is one of the most important issues for mankind. Under the post-industrial capitalism society, however, there seems a big risk of increase in the external diseconomy worldwide. The objectives of this manuscript are to discuss importance of risk management of construction practice in present and future. Regarding the latter, a particular attempt is made to discuss how project risk communication should be done to reduce the external diseconomy. Presently, one of the important issues in implementation of infrastructure projects is practice of risk management to properly manage time, cost, quality, and safety: mainly maximization of internal economy. Multi-party risk and uncertainty management process (MRUMP) is one of tolls to assist it. The idea on MRUMP can be used to reduce the external diseconomy through identifying, sharing, and tuning people's rhythms.

• 한국과학교육학회지
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• 제35권3호
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• pp.443-453
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• 2015

이 연구에서는 우리나라의 과학 교육에 도입 가능한 디자인적 사고 프로세스를 제안하고, 집단 창의성의 발현 측면에서 프로세스의 타당성을 검토하였다. 이를 위해 국외에서 개발된 다양한 디자인적 사고 프로세스로부터 우리나라 과학 교육 상황에 적용 가능한 디자인적 사고 프로세스를 선정하고, 이를 수정 및 보완하였다. 그리고 개발된 디자인적 사고 프로세스를 바탕으로 교육 프로그램을 만들고, 이를 고등학교 학생들에게 적용하였다. 연구 결과, '관련 지식 이해', '공감', '관점 공유', '아이디어 생성', '프로토타입'의 다섯 단계로 디자인적 사고 프로세스를 제안할 수 있었다. 그리고 이를 과학 교육 현장에 적용한 결과, 관련 지식 이해 단계에서는 관계 형성과 정보 수집 요소를, 공감 단계에서는 사용자 지향, 관계 형성, 대인 이해 요소를 확인할 수 있었다. 관점 공유 단계에서는 팀의 조직 요소를, 아이디어 생성 단계에서는 분석적, 전략적 사고력 요소를 확인할 수 있었다. 마지막으로, 프로토타입 단계에서는 의사소통과 분석적, 전략적 사고력 요소를 확인할 수 있었다. 집단 창의성 과정에 능숙한 전문가들로부터 발견되는 집단 창의성의 핵심 속성을 학생들로부터 모두 확인할 수는 없었지만, 이 연구에서 개발된 프로세스를 통해 우리나라 학생들이 집단 창의성이 발현되는 과정을 경험하고, 관련 가치를 배울 수 있는 가능성이 있음을 확인할 수 있었다.

• 패션비즈니스
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• 제22권2호
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• pp.88-106
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• 2018

The domestic fashion industry is not able to exceed the level of fashion that exists in advanced countries due to the relatively weak design competitiveness and the differentiated capability of product development. In order for the domestic fashion industry to become a growth industry that is valued in the world market of infinite competition, a step-by-step support system that can demonstrate and maintain the creative ability of designers is needed. Therefore, this study proposes a template - based 3D virtual fashion technology and a digital fashion platform based on it. The proposed template - based 3D virtual fashion technology is designed to clearly communicate the intention of designers and to be able to instantaneously view the results, thereby reducing the time and cost of producing prototypes. In addition, the digital fashion platform based on the template is designed as a collaborative platform based on idea sharing, which dramatically improves the process of confirming the prototype and initiating the product planning and manufacturing stages. This new technology can contributes to the formation of a business environment and a new area within the existing fashion industry and can be utilized for the development of the fashion industry in the future.

• 수산해양교육연구
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• 제10권1호
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• pp.100-113
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• 1998

The information society is characterized by rapidly increasing and changing information. Traditional models of learning and instruct on have emphasized forms of mastering the information in content domains. Storing information and being able to recall it has been central to formal education. But it is no longer possible to master content domains. This paper discusses constructivism as a shifting paradigm for educational research and practice in information society. Constructivism provides an alternative epistemological base to the objectivist tradition. Constructivism holds that there is a real world that we experience. However, the argument is that meaning is imposed on the world by us, rather than existing in the world independently of us. Meaning is seen as rooted in experience. The experience in which an idea is embedded is critical to the individual's understanding of that idea. From the constructivist perspective, learning is not a stimulus-response phenomenon. It requires self-regulation and the building of conceptual structures through reflection and abstraction. Problems are not solved by the retrieval of rote-learned right answers. The effective motivation to continue learning can be fostered by leading students to experience the pleasure that is inherent in solving problems chosen as one's own. Constructivism requires the change of the teacher's role from a knowledge transmitter to a coach or facilitator of student's understanding. Constructivist teachers inquire about students' understanding of concepts before sharing their own understandings of those concepts, and encourage students to engage in dialogue, both with them arid with one another. In Korea, the educational reform called open education has been spreading through out the country. There should be a paradigm shift in learning and instruction from objectivism to constructivism for better educational reform in Korea.

• 한국콘텐츠학회논문지
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• 제14권5호
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• pp.132-143
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• 2014

본 연구는 여성가족패널조사(KLoWF) 제3차년도 조사(2012)를 활용하여 미취학자녀를 1명 이상 둔 여성 임금근로자 218명을 연구대상으로 선정하여 양육스트레스에 영향을 미치는 요인을 규명하였다. 연구결과, 가족내 역할인식이 높을수록, 남편 가사노동 분담에 대한 만족도가 높을수록, 양육비용이 적을수록 양육스트레스는 낮은 것으로 나타났다. 이러한 결과를 토대로 함의는, 첫째, 여성 임금근로자 자신이 전통적인 여성의 역할인식을 할 때 오히려 양육스트레스가 높기에, 이제는 주부의 취업에 대한 인식과 맞벌이 부부의 가사업무분담 및 주택의 부부공동명의 등 인식의 전환이 필요하다. 둘째, 남편 가사노동 분담에 따른 만족도가 양육스트레스에 유의미한 영향을 미치는 것으로 나타나, 향후 남편의 가사노동 분담의 효과성에 대한 접근이 필요하다. 후속 연구를 위한 제언은 여성의 직종 중 교대근무를 하는 직종비율이 높음을 감안할 때, 이들의 양육스트레스 등을 연구하기 위한 변수를 추가할 필요가 있다.

• 한국컴퓨터정보학회논문지
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• 제20권4호
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• pp.87-93
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• 2015

최근에 사용자 스스로가 네트워크를 구축하여 자신이 소유한 AP의 일부 대역폭을 다른 사람과 공유하는 방법이 대두되었는데 이러한 네트워크를 공유 네트워크라 한다. 응용 애플리케이션으로 공유 네트워크에서 SVC 기술을 사용하는 비디오 스트리밍 전송 시스템을 구축하는 방안이 제안되었는데, 서버로부터 클라이언트에게 비디오 스트림을 보내기 위해서는 루트는 서버이고 내부노드는 공유 AP이며 리프는 클라이언트인 트리 구조를 만들게 된다. 기존의 연구들은 공유 AP의 공유대역폭의 합을 최소로 사용해서 모든 클라이언트를 서비스하는 최소 공유대역폭 트리를 구축하는데 주안점을 두고 있다. 본 논문에서는 공유 AP들의 집합이 주어졌을 때 클라이언트의 비디오 스트림 요구를 최대로 만족시키는 최대 요구대역폭 트리를 구축하는 문제가 NP-하드임을 증명하였다. 또 이 문제를 해결하기 위한 효율적인 휴리스틱 알고리즘을 개발하고, 실험을 통해 성능을 평가하였다.