• Proceedings of the Korean Information Science Society Conference
• /
• 2002.10d
• /
• pp.655-657
• /
• 2002

메모리 반납(deallocation) 명령어는 프로그램에게 할당된 힙 셀(heap cell)을 반납하는 명령어로 힙 사용량을 낮추어 주지만, 잘못된 반납으로 인해 심각한 오류를 일으킬 수 있다. 본 논문에서는 재귀적인 자료구조(recursive data structure),를 안전하게 반납하는 명령어를 삽입하는 알고리즘을 제시한다. 메모리의 모양새를 분석하고 나중에 쓰이지 않을 힙 셀들을 추정하여 반납 명령어를 삽입한다. 분석시 요약 수준을 적절히 조절함으로써 빠르면서도 정확하게 분석한다. 또한, 실행시간에 부가적인 정보를 전달하여 일찍 힙 셀을 반납할 수 있도록 한다. 제시한 알고리즘으로 메모리 반납을 하지 않는 프로그램에 반납 명령어를 삽입하여 전체 메모리 할당량의 5.2-98.7%를 반납할 수 있었다.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.42 no.2
• /
• pp.219-227
• /
• 2022

In Korea, as the aging phenomenon accelerates, the problem of traffic accidents related to the elderly is continuously emerging. Efforts to improve this are being implemented, but unfortunately the results of these effects are not clear. Therefore, in this study, the effect of traffic characteristics and incentive policies on the return of driver's licenses of elderly drivers was reviewed. As a result of the analysis, it was confirmed that the intention to return the driver's license was low in the case of men, older people, those with low dependence on public transportation, those who undertook long driving hours, and those who took frequent trips. On the other hand, financial incentives were found to play a positive role with regard to the intention to return the driver's license. However, the effect is expected to be insignificant for those with a low intention to return the driver's license. As a result, under the current policy, it is predicted that there is a limit to improving the social problems caused by elderly drivers, meaning that it is necessary to review approaches that induce the return of their driver's licenses.

• The Journal of the Korea Contents Association
• /
• v.19 no.8
• /
• pp.172-183
• /
• 2019

Modern society has a tendency to raise fewer children. As a result, parents became more interested in their children's creative ways of thinking and began to look for new ways of teaching. The child care support center expects a positive effect by lending various toys and books to improve the physical, emotional and social characteristics of children and to help reduce household burden on parents. In this paper, we design and implement a rental return system to effectively utilize a toy library operated by the child care support center. The proposed system makes it easy for any user to search for items in any branch operated by the Child Care Support Center and to manage loan return records. The administrator can manage data such as loans, returns, and past due from the rental return processing system, and effectively operate the child care support center through statistics of data generated. Children are expected to be given a variety of entertainment cultures and cultural benefits to their families to ease the burden of parenting.

• Journal of Navigation and Port Research
• /
• v.40 no.6
• /
• pp.459-468
• /
• 2016

The decreasing number of import and export containers is causing a problem with container circulation. In particular, this problem has reached a serious level in the Gyeongin area. Empty containers are accumulating in the Gyeongin container yard, where most of the returned containers are stored. In order to improve the empty container return problem at Gyeonhin, this study analyzes the actual situation and the empty container return process. A preference survey was conducted to suggest solutions from the perspective of users rather than shippers. A logistics company's data was analyzed to identify the inefficient cost structure in the Gyeongin area. The results show that the empty container return problem in Gyeongin is becoming more and more serious. To solve this problem, this paper proposes reestablishing functions at the Incheon Port, and securing a third new storage terminal in the Gyeongin area. Finally, an efficient empty container circulation system is presented. It will also be necessary to prepare laws and institutions to ensure these solutions.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2016.05a
• /
• pp.242-245
• /
• 2016

국내의 수출부족과 경인지역의 지역적 특성 및 여러 요인들로 인하여 공(空)컨테이너 반납처리에서 문제점을 많이 겪고 있다. 이를 해소하기 위한 개선 방안 연구.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2019.10a
• /
• pp.619-620
• /
• 2019

도서관에서 사용자들이 책을 빌리거나 반납하기 위해서는 'ㄱ'부터 시작하여 'ㅎ'까지 순서대로 진열이 되어 있는 책의 위치를 찾아가야 한다. 책을 반납할 때, 책을 다시 제자리에 놓는다면 문제가 없지만 사람들이 책을 읽고 진열대에 다시 넣는 과정에서 착오가 생겨, 다른 진열대 넣는 경우, 도선관 사서가 이를 찾아내, 올바른 위치에 놓아야 한다. 또한, 사용자들이 반납한 책들을 도서관 사서가 실수로 다른 곳에 진열할 수도 있다. 본 논문에서는 이러한 문제점을 줄이기 위해, 지능형 모바일 증강현실에 기반한 도서 위치 관리 방법을 제시한다. 제시된 방법에서는 책의 위치 정보, 각도 등 다양한 센싱 정보를 활용하여 진열된 책들이 제자리에 있는지를 실시간으로 점검하고 책의 위치가 잘못 되었을 경우, 도서관 사서에게 이를 알려 책의 위치를 바로 잡도록 하였다.

• Proceedings of the Korea Contents Association Conference
• /
• 2019.05a
• /
• pp.455-456
• /
• 2019

현대 사회는 적은 자녀만 낳아 키우는 추세이다. 그러다보니 부모들은 자녀의 창의적 사고방식에 대한 관심이 높아지고 새로운 교육방식을 찾기 시작했다. 본 논문은 부모들의 기대에 부응하기 위해 육아종합지원센터에서 운영하는 장난감 도서관을 효과적으로 활용할 수 있도록 대여 및 반납 시스템을 설계하고 구축한다.

• Journal of Digital Convergence
• /
• v.16 no.10
• /
• pp.213-222
• /
• 2018

This study was conducted to derive the traffic accident risk index through the recognition of the elderly driver's driving pattern to reduce the traffic accident rate of elderly drivers and to reflect them in the renewal and return policy of driver's license accordingly. First, the traffic accident risk index is defined by analyzing the behavioral characteristics of older drivers to derive the major factors that lead to traffic accidents. Second, we present a method to measure the traffic accident risk index from the driving pattern of the elderly through the smart-phone, the camera and the distance sensor attached to the car. Finally, we derive three thresholds by computer simulation and determine the accident risk from the measured traffic accident risk index as four steps and suggest ways to ensure safe driving of older drivers. It is required to objectively assess the driving ability of an aged driver in accordance with the proposed method, and to induce the driver to reset the driver's license renewal cycle and voluntarily return the driver's license to minimize social costs due to increased traffic accidents.

• Journal of the Korean Society for Library and Information Science
• /
• v.47 no.1
• /
• pp.81-104
• /
• 2013

The U-library service is a user-oriented library service through which users, after browsing and making reservations using the Internet and smartphones, can borrow and return library materials at an unmanned circulation system located in places, such as subway stations, without visiting the library. However, the U-library service is still in the early stages both quantitatively and qualitatively. In that, this study, in order to enhance our understanding of the U-library service, conceptualizes the unmanned circulation system, investigates current situation by examining and analyzing some U-library service cases, and pinpoints some problems while making some suggestions for improvement.

• KLA journal
• /
• v.32 no.3 s.268
• /
• pp.8-22
• /
• 1991