• Journal of the Korea Institute of Information and Communication Engineering
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• 제8권8호
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• pp.1783-1789
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• 2004

It is evaluated that there is infinit capability of creating new e business using P2P program. but the research for the method to protect the copyright of digital contents is urgent even for development of the p2p service because the problem of copyright protection for digital contents is not solved. Though this article, it can be induced that reliable contents sharing use to a flow fund by secure settlement architecture, user authentication and contents encryption and then it as the problem of copyright fee is solved, it is able to discontinue which trouble with a creation work for copyright fee and protection it's once again as growth of p2p market, p2p protocal is will be grow into a important protocal of advanced network. In this article, When users send digital contants to each other in internet, we proposed the P2P DRM algorism to offer a security function which using the technology of copyright management to use a AES Algorithm based on PKI.

• Journal of the Korea Institute of Information and Communication Engineering
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• 제19권4호
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• pp.819-824
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• 2015

SDN (Software Defined Network) technology, hardware and network control functions should be separated independently of existing switches or routers and data transfer functions and are also refers to a separate network architecture that can develop and run. When planning a network and designed to reflect the network control function by applying the SDN may reflect the resources efficiently. In this study, one people suggest Applications SDN, which offer an absolutely necessary part of a coded program that combines the benefits of the existing IOS (Combined Benefits) applying the model to complete the Controller part through the MPLS IOS. The OpenFlow Controller is a command to the router LER(Label Edge Router), and transmits the packet in accordance with the command to the destination according to the EXP bit. To configure TCP / IP to the IOS through the optimized coding. Using the OpenFlow protocol controller transmits an encapsulation header as defined in the MPLS packet.

• Journal of the Korean Society for Precision Engineering
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• 제33권10호
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• pp.821-828
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• 2016

Recently, the use of composite materials in the defense system has grown dramatically. The strength/weight and stiffness/weight ratios of composite structures are normally higher than of metals. Woven composites, especially, are increasingly considered for a variety of applications, because they offer good workability for complicated structures. HPW193/RS1222 is one of the most famous woven composites and has been used in many types of Korean military equipment, such as antenna pedestals and radar systems. In this study, we predicted the elastic modulus of HPW193/RS1222 using the principles of unidirectional composite stiffness predictions, such as ROM (Rule of Mixture), HSR (Hart Smith 10% Rule), CLA (Classical Laminate Analysis) and LAP (Laminate Analysis Program). We compared the dynamic characteristics with the experimental predictions and finite-element analysis (FEA). From our results we concluded that transversely isotropic materials are similar to isotropic materials when the shape of the composite structure is complicated.

• Journal of Korean Society for Quality Management
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• 제31권3호
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• pp.62-84
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• 2003

The typical reason of the private sector's increasing share in standardization is that the procedures of official standardization organizations are out of step with the rate of technical development. At today's so fast pace that the success of a technology is decided in the market even before it is standardized, several industry leaders jointly make their draft standard at the early stage of development, which becomes 'De fecto Standard.' To respond effectively to current trends of standardization where the market's decision is thought much of than official standardization procedures, it is necessary to shift from our current public sector-driven to private sector-driven standardization. Therefore, to vitalize the private sector-driven standardization in Korea, there is a need to: Run a standard foundation to secure stable resources for standardization Make information exchange between the govertment and private sector active and policy-making on standards consistent by designating a private organization to cover the roles, policies on standards, and support of the national standardization organization Establish a system to make private sector-driven standards approved as international standards Offer a training program to forster standard experts Publicize the importance of standards Promote standardization forums driven by private businesses, like the Integrated Forum. Maximize the benefits of linking standards and patents Now, Korea is on the threshold of developing into a world-class standard leader, and the private sector-driven standardization should be a stepping-stone for crossing over the threshold. This study is designed to suggest a method of promoting private sector-driven standardization to effectively cope with fast-changing international standards, based on the cases in developed countries.

• The Journal of the Korea Contents Association
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• 제13권12호
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• pp.568-574
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• 2013

In recent years, IT companies offer various cloud services using hardware-based technologies or software-based technologies. User can access these cloud services without the constraints of location or devices. The technologies are virtualization, provisioning, and big data processing. However, security incidents are constantly occurring even with these techniques. Thus, many companies build and operate private cloud service to prevent the leak of critical data. If virtual environment are different according to user permission, many system are needed, and user should login several virtual system to execute an program. In this paper, I suggest the access control method for application software on virtual operating system using the Open Authentication protocol in the Cloud system.

• The Journal of the Korea Contents Association
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• 제17권3호
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• pp.285-296
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• 2017

The study was conducted to investigate how Korean men in their 20s and 30s perceive abortion. A cross-sectional survey was conducted. One hundred forty participants were selected from male adults in G city and J area. The inclusion criteria were as follows: (1) men were between 20 to 39 years old; (2) were able to read and understand Korean; (3) understood the purpose of the study; and (4) agreed voluntarily to participate in this study. A structured questionnaires were used as a study instrument, and included questions regarding subjects' general characteristics and their perception of abortion. Data were collected from March to June 2016. Descriptive statistics and Fisher exact test were used for analysis. 67.1% of participants responded that 'people can have abortion under some circumstances'. The results found that 'education about contraception (68.6%)' was widely regarding among the subjects as the best way to prevent abortion. There were also significant differences in their responses depending on a subject's some characteristics. Our results suggest that it is needed to offer education program about abortion for young men.

• Journal of Energy Engineering
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• 제18권1호
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• pp.63-68
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• 2009

The safety culture of an organization is very complex and hard to study, but it is possible to examine norms that make up the culture. This paper describes of a Process Safety Management (PSM) climate assessment tool developed in high risk industry such as chemical industries. The main purpose is to develop measuring software tool behaviors by examining their nature and strength and by analysing underlying factors that offer explanations for attitudinal differences. We reviewed the current techniques and literatures available to assess safety climate and culture, conducted focus group interviews and discussions. Based on the reviews and focus group, PSM climate assessment questionnaires and an online application program were developed. A pilot assessment was done at a chemical plant in Korea and the safety climate profile was completed. It was suggested to have a constant feedback from different sectors of industry to improve the application.

• Korean Institute of Interior Design Journal
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• 제14권6호
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• pp.140-147
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• 2005

For a safe and stable supply of blood in Korea, 'Blood Donation Houses' are springing up all over Korea to advertise and improve the awareness on blood donations. This research will conduct a study on such blood donation centers, their conditions and problems. It will furthermore provide solutions to raise the level of comfort to donators and help nurses for a better working environment. The research will be conducted in 'Blood Donation Houses' that were established by 4 centers of the Korean Red Cross in Seoul after 1993. Any houses that are temporary (containers, buses, smaller than 15 pyung) were excluded from this study. In order to investigate changes of these houses, the ones analyzed and recorded in the 2002 data were used as a basis for comparison. A total of 16 houses were selected for this study. 5 houses were closed after the initial study of 2002, and 6 houses were not available for research upon above mentioned criteria, leaving 9 houses from the original 2002 data. 7 additional houses were opened after 2002, which were included in this study. The research was conducted by a close study of written materials on the historical and theoretical viewpoint of blood donations, as well as visits to the actual Blood Donation Houses. The conclusion will offer solutions to necessary functional and working space, and lighting in such houses on the basis of above analyzed theoretical and practical data.

• Korean Journal of Human Ecology
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• 제16권3호
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• pp.651-664
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• 2007

The purpose of this study was to research the college students' life styles, housing satisfaction and future-housing environment preferences according to demographic variables. So the eventual purpose is to offer basic data of future-housing development. This study has a subject of 512 college students living in Jeonbuk province. In this statistical analysis, SPSS 11.5 for Windows program. The results of this research were as follows; The college students' life style showed higher in the self-confidence-directed and the home-directed types. And the college students' housing satisfaction showed higher in housing equipments. The life style and housing satisfaction were significant difference according to major, their parents' academic career, fathers' occupation, average incomes, type of house. The college students' future-housing preference showed higher in housing equipments and environment. And the significant difference according to gender, school year, major, mothers' occupation, and type of house in the college students' future-housing environment preference. College students' life style, housing satisfaction, and future-housing environment preference have a significant correlation one another. Housing satisfaction variables had positive correlations with life style and future-housing environment preference. Partially, negative correlation was showed between life style and future-housing environment preference. As a conclusion, college students' life style and housing satisfaction constituted important characteristics which could affect future-housing environment preference directly. These results should be provide fundamental information for the new generation's future-housing development.

• The Journal of the Korea Contents Association
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• 제11권12호
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• pp.347-356
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• 2011

The aim of this study was to determine the prevalence of self-assessment halitosis and to offer the basic information that establishes a strategy of effective health promotion and to enhance the quality of life. This study performed a questionnaire survey. The questionnaire was filled out by the 362 adults, who lived in Incheon Metropolitan City from May to July, 2010. The data were analyzed using a Chi-square test in the SPSS version 12.0 program. The prevalence rate of self-assessment halitosis was 24.3%. Hypertension, diabetes, medication and inadequate oral hygiene practice were significantly associated with self-assessment halitosis. Other factors of self-assessment halitosis were older age and occupation. As a result, dental professionals have to investigate a systemic disease history thoroughly. And they have to educate regular checkup of oral health and to perform a continuous feedback. The self-assessment halitosis has a negative influence on mental health and social life, so dental professionals must take into consideration about the halitosis.