• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.186-188
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• 2003

Rail Route Alignment in hilly terrain is a difficult task to implement as several natural constraints poses threat to the safety and stability of the alignment. The conventional methods followed to find out the final location survey or the feasibility analysis for alignment is time taking consuming. Some times, due to inaccessibility of the terrain it becomes impossible to carry out such works. The construction works in hilly terrain, which are associated with the proposed alignment, are not same as carried out in plane areas due to a vast contrast between the two areas. Different geological structures such as faults, thrusts, synclines and anticlines are a big problem to carry out normal construction practices. Thus for a safe and stable railway route in the unstable hilly areas, it is required to carry out the feasibility analysis of the proposed alignment to assist the policy makers for a successful implementation of the alignment. In the present work Remote Sensing and GIS has been successfully used to carry out geological feasibility and slope stability analysis for rail route alignment work.

• 한국산업정보학회논문지
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• 제13권1호
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• pp.68-75
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• 2008

Ad hoc 네트워크는 구성이 변하기 쉬운 환경이므로 불법 노드가 네트워크 자원소비 및 경로방해 등의 동작이 용이하므로 라우팅 프로토콜 보호가 필요하다. 본 논문에서는 대칭키 암호화 방식을 이용하여 효율적이고 안전한 경로발견 프로토콜을 제안한다. 제안한 프로토콜은 대칭키 암호화 방식을 이용하여 각 홉에서 처리하는 연산량을 줄이며 경로응답 시 암/복호화 과정이 있어 정당한 홉을 가장한 active 공격에 강하다.

• 산업경영시스템학회지
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• 제24권65호
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• pp.89-102
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• 2001

In this paper, the aircraft route scheduling consists of two steps; the pairing generation and the aircraft assignment. The pairing generation is heuristic approach how flights construct pairings from and to the main base. The aircraft resource assignment which is to establish a aircraft route schedule is constructed by constraint satisfaction problem technique. ILOG solver and schedule is used to solve this problem. In addition, a aircraft route reschedule process against departure-arrival delay or aircraft maintenance schedule change is added by partial constraints satisfaction problem technique. Also, Gantt chart made by ILOG views is used to show aircraft route schedule results more easily.

• 대한안전경영과학회지
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• 제17권3호
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• pp.273-278
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• 2015

In this study, refer to cases of domestic flower exporters, important factors for flower export logistics were categorized and analyzed and efficient logistics processes were suggested. According to export profitability and product quality, important factors were categorized as quarantine, costs, lead time. By applying important factors, commonly using route-SHIMONOSEKI, reverse distribution prevented route-HAKATA, Excellent market access routes-OSAKA were analyzed and efficient logistics processes were suggested.

• 한국철도학회논문집
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• 제6권2호
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• pp.87-93
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• 2003

Serving a function of transportation information and geographic information together with proper composition of design elements, railway route maps have to be designed to easily recognized to the concerning passengers as they offer users to access to the guide information. This study analyzed visual aspects of the maps of 8 underground routes linking Seoul and urban cities(D1 - D8) and the maps of 8 different cities overseas (A1 - A8). As a source of information with condition of easy recognition, universality and aesthetics, route maps should be designed and consistently managed by the manual which establishes the principle of the logical system and the standardized form.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2004년도 춘계학술발표대회
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• pp.1429-1432
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• 2004

MANET(Mobile Ad Hoc Network)이란 어떠한 기반 구조나 중앙의 관리없이 동적으로 임시 네트워크를 형성하는 무선 mobile node의 집합이다. 이 논문에서는 MANET에서 근원지 node가 목적지 node로의 route를 발견하기 위해 전체 네트워크를 대상으로 route request 패킷을 flooding 할 경우 결과적으로 네트워크의 성능을 저하시킨다는 점과 mobile node가 제한된 양의 power를 가지고 있다는 점에 초점을 맞추어 연구가 진행되었다. 다시 말해 이 논문에서 제안된 ZTPA 라우팅 프로토콜은 기존의 ZRP를 기본으로 서로 겹치지 않는 격자 모양의 zone으로 네트워크가 구성된다. 또한 proactive 라우팅이 이루어지는 IARP에서 route 설정시 현재 node에 남아있는 power를 고려한 CMMBCR 라우팅 프로토콜이 사용되며 이와 더불어 두 개의 임계치(SVSZ, FVSZ)를 사용함으로써 설정된 route의 수명을 연장하고 신뢰성 있는 데이터 전송이 가능하여 전체적인 네트워크의 성능 향상을 야기할 수 있다.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.285-291
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• 2022

WSN is the major component for information transfer in IoT environments. Source Location Privacy (SLP) has attracted attention in WSN environments. Effective SLP can avoid adversaries to backtrack and capture source nodes. This work presents a Two-Level Randomized Sector-based Routing (TLRSR) model to ensure SLP in wireless environments. Sector creation is the initial process, where the nodes in the network are grouped into defined sectors. The first level routing process identifies sector-based route to the destination node, which is performed by Ant Colony Optimization (ACO). The second level performs route extraction, which identifies the actual nodes for transmission. The route extraction is randomized and is performed using Simulated Annealing. This process is distributed between the nodes, hence ensures even charge depletion across the network. Randomized node selection process ensures SLP and also avoids depletion of certain specific nodes, resulting in increased network lifetime. Experiments and comparisons indicate faster route detection and optimal paths by the TLRSR model.

• Journal of Astronomy and Space Sciences
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• 제40권2호
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• pp.59-66
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• 2023

Since the World Health Organization (WHO) officially announced a global pandemic on March 12, 2020, the aviation industry in the world has been experiencing difficulties for a long time. Meanwhile, the Ukraine war broke out in February, and from March 15, domestic airlines must operate air routes bypassing Russian airspace despite the longer flight time. Therefore, as the flight time increases, the cosmic radiation exposure dose of the crew members is also expected to increase. Here we compare the radiation exposure dose between the route doses for the eastern United States and Europe before and after the detour route usage. Through the comparison analysis, we tried to understand how cosmic radiation changes depending on the flight time and the latitude and which one contributes more. We expect that this study can be used for the policy update for the safety management of cosmic radiation for aircrews in Korea.

• 한국재료학회:학술대회논문집
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• 한국재료학회 1993년도 춘계학술발표회
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• pp.108-109
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• 1993

• 정보와 통신
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• 제33권7호
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• pp.25-31
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• 2016

본고에서는 차세대 북미/한국 지상파 방송표준인 ATSC 3.0의 프로토콜 구조를 알아보고, ROUTE/DASH 의 기술에 대하여 심층 설명하고 개발 동향과 서비스 계획을 알아본다.