• 항공우주정책ㆍ법학회지
• /
• 제13권
• /
• pp.303-324
• /
• 2001

• 중국학논총
• /
• 제66호
• /
• pp.1-13
• /
• 2020

After the "spatial turn" space narrative has become the hottest "doctrine". Howe er, the current space narrative to a bottleneck stage, a variety of reasons. "Spatial turn" of the modern trend of thought has a unshirkable responsibility. Has been, scholars turned to "empty" the complex relationship between space narrative and, type of narrative space narrative theory problem also not too clear by the noun, the term textual research, narrative of space studies provide some of the necessary theoretical support, to promote the healthy de elopment of the research on novel narrative space.

• KIEAE Journal
• /
• 제8권1호
• /
• pp.71-79
• /
• 2008

Lower birth rate and higher elder people are serious social problem in Korea. In 2003, the total birth rate is 1.19 per person, that record is lowest among OECD country. In 2005, Korea has been the aging society with 9.0% in aged population rate. Increasing of aged population results in elder estrangement and confliction with other generations. The social problem can be solved in some degree by improving housing environment and many kinds of welfare program. This study suggests a solution of the problem by applying community space located on ground level floor. The ground level floor of apartment has many physical benefits like connection to the earth, extension, safeness for the aged and child. in case of the National Rental apartment, small residential area and high rate of elder, child, the disabled make the ground level floor useful space for community. According to case study, almost the National Rental apartment hasn't enough facilities supporting various generations and don't supply comfortable environment. So, this study presents how to design the National Rental Apartment's community space located on ground level floor.

• 디지털콘텐츠학회 논문지
• /
• 제5권3호
• /
• pp.163-170
• /
• 2004

농업혁명, 산업혁명, 정보혁명과 맞먹는 제4의 혁명이 바로 유비쿼터스(Ubiquitous) 혁명이다. 과거의 농업혁명이나 산업혁명은 인류문명의 기반인 물리 공간의 혁명이었고, 월드와이드웹 서비스가 확대되면서 절정기를 맞은 정보화 혁명은 사이버 공간(Cyber Space)의 혁명이었다. 이에 반해 유비쿼터스 혁명은 물리 공간과 사이버 공간의 지능적 결합을 통한 온라인과 오프라인 공간이 통합된 공간에서 이뤄진다. 사이버 공간은 자연스럽게 생활공간과 결합되어 새로운 통합 공간을 창출한다. 그 공간은 아직까지 인류가 경험하지 못한 미지의 세계이자 무한한 기회 공간이다. 본 연구는 현재 진행 중인 유비쿼터스 기술의 개념과 현황 살펴본다. 또한 유비궈터스를 미용분야에 적용할 때의 문제점을 도출해보고 각 문제점을 해결할 수 있는 방안을 제시하였다. 특히 모든 기기간의 무선통신이 가능한 세상에서는 개인의 프라이버시에 대한 침해가 많이 발생할 소지가 많다. 이에 대한 정책적 기술적 해결방안을 제시함으로 향후 미용분야에 도래할 유비쿼터스 세상에 대한 철저한 준비에 유용한 자료가 될 것으로 사료된다.

• 한국산학기술학회논문지
• /
• 제10권7호
• /
• pp.1702-1710
• /
• 2009

본 논문은 rework 발생확률을 고려하는 병렬기계 스케줄링 문제를 위해 문제공간기반 탐색 알고리즘을 제안한다. 각 기계와 작업유형별로 rework 발생확률이 존재하며 이것은 자동화된 공정에서 과거데이터로부터 산출가능하다. 스케줄링 문제의 데이터 벡터 (가공시간, 납기, 셋업시간, rework확률)를 교란시킴으로써 이웃해를 생성하고 이로부터 도출된 해는 EDDR이라는 효과적인 휴리스틱을 이용하여 평가한다. 제안된 알고리즘은 납기지연의 최대값과 rewok 발생 작업수로 평가함으로써 제품의 품질과 납기수준을 동시에 고려할 수 있도록 한다.

• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회 2001년도 추계학술대회 논문집
• /
• pp.283-285
• /
• 2001

The most work-space invest much time and labor for optimal arrangement. The work-plates of the work-space should be arranged, processed and assembled under the restricted work space. The optimal arrangement under the terms of a restriction arrange the maximum work-plates in appointed work-space. It's the central aim. The work-plates arrangement scheduling of the most work-space are achieved through the experience of the planner. Like this, if the work-plates arrangement is worked by hand, there spend much time for the training planner. And the burden of the personnel expenses occur for using the master worker, also there are dangerous factors to be able to bring the bottleneck circumstance for the process planning, because the quick work planning does not accomplish. With such problems, the biggest problem is inferior the value of the plan. For solved the such problem of hand-operating, some work-spaces developed and used the work-plate arrangement scheduling system for the special quality of themselves. This paper make research into a plan to develop the work-plate arrangement scheduling system efficiently.

• Journal of applied mathematics & informatics
• /
• 제19권1_2호
• /
• pp.179-190
• /
• 2005

We deal with the Cauchy problem for the space-time fractional diffusion equation, which is obtained from standard diffusion equation by replacing the second-order space derivative with a Caputo (or Riemann-Liouville) derivative of order ${\beta}{\in}$ (0, 2] and the first-order time derivative with Caputo derivative of order ${\beta}{\in}$ (0, 1]. The fundamental solution (Green function) for the Cauchy problem is investigated with respect to its scaling and similarity properties, starting from its Fourier-Laplace representation. We derive explicit expression of the Green function. The Green function also can be interpreted as a spatial probability density function evolving in time. We further explain the similarity property by discussing the scale-invariance of the space-time fractional diffusion equation.

• Kyungpook Mathematical Journal
• /
• 제58권2호
• /
• pp.389-398
• /
• 2018

In this paper we obtain the condition for the existence of Ricci solitons in nonflat quaternion space form by using Eisenhart problem. Also it is proved that if (g, V, ${\lambda}$) is Ricci soliton then V is solenoidal if and only if it is shrinking, steady and expanding depending upon the sign of scalar curvature. Further it is shown that Ricci soliton in semi-symmetric quaternion space form depends on quaternion sectional curvature c if V is solenoidal.

• Journal of applied mathematics & informatics
• /
• 제26권3_4호
• /
• pp.445-456
• /
• 2008

We characterize the helical polynomial space curves and solve the first-order Hermite interpolation problem for helical polynomial space quintics.

• International Journal of Automotive Technology
• /
• 제6권6호
• /
• pp.635-641
• /
• 2005

This paper presents an ASF (Aluminum Space Frame) BIW (Body in White) optimal design, which minimizes weight and satisfies multidisciplinary constraints such as static stiffness, vibration characteristics, low-/high-speed crash, and occupant safety. As only one cycle CPU time for all the analyses is 12 hours, the ASF design having 11-design variable is a large scaled problem. In this study, ISCD-II and conservative least square fitting method were used for efficient RSM modeling. Likewise, the ALM method was used to solve the approximate optimization problem. The approximate optimum was sequentially added to remodel the RSM. The proposed optimization method uses only 20 analyses to solve the 11-design variable problem. Moreover, the optimal design can achieve $15.6\%$ weight reduction while satisfying all the multidisciplinary design constraints.