• 대학교육
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• s.84
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• pp.97-105
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• 1996

대학 개혁의 개념, 대상과 목표를 지적하고 이에 대한 여론의 강력한 지원을 이끌어내는 것은 바로 언론이다. 그런데 언론 역시 대학과의 밀착 정도가 지나칠 정도이기 때문에 과연 언론이 대학 개혁을 필연적인 시대정신이라고 여기고 지원할 능력과 의사가 있는지는 미지수다. 대학 개혁은 필연적으로 언론 개혁과 동시에 진행되어야 할 것인 바, 다른 부문과 달라서 이 개혁은 각각의 내부역량의 민주화 정도가 그 성패를 좌우할 것으로 판단된다.

• Aerospace Industry
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• v.75
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• pp.41-41
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• 2001

산업자원부와 산업연구원은 대내외 경제환경의 변화에 대한 한국산업 및 기업의 대응능력 수준과 결정요인, 전망 등을 실태조사하고 이에 기초한 산업 및 기업의 경쟁력 강화정책을 수립하기 위해 다음과 같이 산업내부구조에 대한 통계 데이터베이스(DB)를 구축하고자 합니다.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.04b
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• pp.825-828
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• 2001

본 논문에서는 WPAN(Wireless Personal Area Network)의 종단 사용자 기기의 한계적 계산 능력 및 무선 링크의 대역폭과 기존 외부 네트워크와의 연결을 고려하여 선택적 신뢰 기관(Trusted Third Party, TTP) 서비스를 수용한 상호 공정 계약 서비스 프로토콜을 제안하였다. 제안한 서비스는 종단 사용자 기기의 한계적 능력에 대해 해당 내부 네트워크의 TTP 와 공개키를 기반으로 인증 서비스를 수행하도록 하였으며, 이후 종단 사용자는 해당 인증 결과를 기반으로 외부 네트워크의 전자 상거래 주체와의 상호 메시지 교환을 위한 서비스 프로토콜을 수행하도록 하였다. 또한 사전에 외부 네트워크에 대한 전자 상거래 서비스 요청에 한하여 TTP의 부분적 서비스를 수행하도록 허용하여 시스템의 대단위 계산 능력에 대한 효율성을 보장할 수 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.868-870
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• 2001

본 논문에서는 WPAN(Wireless Personal Area Network)의 종단 사용자 기기의 한계적 계산 능력 및 무선 링크의 대역폭과 기존 외부 네크워크와의 연결을 고려하여 선택적 신뢰 기관(Trusted Third Party. TTP) 서비스를 수용한 보안 관리 서비스 프로토콜을 제안하였다. 제안한 서비스는 종단 사용자 기기의 한계적 능력에 대해 해당 내부 네트워크의 TTP와 공개키를 기반으로 인증 서비스를 수행하도록 하였으며, 이후 종단 사용자는 해당 인증 결과를 기반으로 외부 네트워크의 전자 상거래 주체와의 상호 메시지 교환을 위한 보안 관리 서비스 프로토콜을 수행하도록 하였다. 또한 사전에 외부 네트워크에 대한 전자 상거래 서비스 요청에 한하여 TTP의 부분적 서비스를 수행하도록 허용하여 시스템의 대단위 계산 능력에 대한 효율성을 보장할 수 있다.

• Journal of the Korean Society of Propulsion Engineers
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• v.16 no.5
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• pp.29-36
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• 2012

3-D linear acoustic analysis has been performed to elucidate damping characteristics of large Helmholtz acoustic cavities in FASTRAC thrust chamber. Acoustic impedance concept has been introduced to quantify combustion stabilization capacity. For a given acoustic cavity, sonic velocity in the cavity to achieve an optimal tuning has been determined and satisfactory agreement with the previous results has been obtained. Feasible estimation of sonic velocity in the acoustic cavity has been devised. Results show similar trends without significant deviations, which can be used in the procedure of design and verification of acoustic cavity. From the satisfactory results, investigation of other thrust chambers with acoustic cavities which have shown combustion instabilities will be done as future works.

• Fire Science and Engineering
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• v.23 no.6
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• pp.57-65
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• 2009

Fire suppression tests are carried out for a train car using water mist systems. Three kinds of fire scenario applied to the real-scale train car are a surface fire representing car combustibles, a oil pool fire pretending an oil spill and a blocked fire for evaluation of space-cooling capacity. Five fixedpressure water mist systems and one self-contained water mist system with nitrogen gas are used for fire suppression experiments. Almost water mist systems can extinguish effectively train car fires, and fire-control capability of the system is seen due to the space cooling.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2012.05a
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• pp.16-23
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• 2012

3-D linear acoustic analysis has been performed to elucidate damping characteristics of large Helmholtz acoustic cavities in FASTRAC combustor. Acoustic impedance concept has been introduced to quantify combustion stabilization capacity. For a given acoustic cavity, sonic velocity in cavity to achieve an optimal tuning has been determined and satisfactory agreement with the previous results has been obtained. Feasible estimation of sonic velocity in acoustic cavity has been devised. Results show similar trends without significant deviations, which can be used in the procedure of design and verification of acoustic cavity. From the satisfactory results, investigation of other combustors with acoustic cavities which have shown combustion instabilities will be done as future works.

• Journal of Korean Society of Steel Construction
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• v.23 no.4
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• pp.439-454
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• 2011

A nonlinear analysis model for internally confined hollow concrete-filled tube (ICH CFT) columns was suggested and was verified by the test results obtained by the previous researchers. The suggested model considered the confining effect and nonlinearity of concrete. The verified results showed that the suggested model was reasonable and reliable for predicting the behavior of an ICH CFT column. Additionally, a simple parametric study was carried out. The strength of concrete, the hollow ratio of a column, and the thickness of an inner tube were selected as parameters affecting the behavior of an ICH CFT column. The analysis results showed that the concrete strength and the thickness of the inner tube affect the axial strength and moment capacity of the column while the hollow ratio affects only its axial strength.

• The Journal of the Korea Contents Association
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• v.18 no.6
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• pp.434-442
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• 2018

Recently, the threat to the security and damage of important data leaked by devices of intranet infected by malicious code through the Internet have been increasing. Therefore, the partitioned intranet model that blocks access to the server for business use by implementing authentication of devices connected to the intranet is required. For this, logical net partition with the VDI(Virtual Desktop Infrastructure) method is no information exchange between physical devices connected to the intranet and the virtual device so that it could prevent data leakage and improve security but it is vulnerable to the attack to expose internal data, which has access to the server for business connecting a nonregistered device into the intranet. In order to protect the server for business, we suggest a blockchain based network partition model applying blockchain technology to VDI. It contributes to decrease in threat to expose internal data by improving not only capability to verify forgery of devices, which is the vulnerability of the VDI based logical net partition, but also the integrity of the devices.

• The Journal of the Korea Contents Association
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• v.19 no.1
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• pp.278-292
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• 2019

The purpose of this study is to provide a suggestion to improve speciality and job performance of social work case management using importance-performance-analysis(IPA). A quantitative research design was used and data were collected from 209 social workers who are in charge of case manager job at Ulsan metropolitan area. Study participants were asked the recognition of importance-job competence and need for supervision-experience of social work case management job description on the NCS(9 competency units, 33 competency units). Descriptive analysis and IPA were performed. This study found the need for intensified job competence of 'building external operating systems' and 'development of resource linkage systems'. Also, it is necessary to provide intensive supervision for 'building an external and internal operating system.' Based on the results, future direction of intensified job performance for socla work case management was discussed.