Evolvable Neural Networks for Time Series Prediction with Adaptive Learning Interval

서상욱,이동욱,심귀보 한국지능시스템학회 2008 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.8 No.1

This paper presents adaptive learning data of evolvable neural networks (ENNs) for time series prediction of nonlinear dynamic systems. ENNs are a special class of neural networks that adopt the concept of biological evolution as a mechanism of adaptation or learning. ENNs can adapt to an environment as well as changes in the environment. ENNs used in this paper are L-system and DNA coding based ENNs. The ENNs adopt the evolution of simultaneous network architecture and weights using indirect encoding. In general just previous data are used for training the predictor that predicts future data. However the characteristics of data and appropriate size of learning data are usually unknown. Therefore we propose adaptive change of learning data size to predict the future data effectively. In order to verify the effectiveness of our scheme, we apply it to chaotic time series predictions of Mackey-Glass data.

SVM을 이용한 군집로봇의 행동학습 및 진화

서상욱,김호덕,주종태,심귀보 제어로봇시스템학회 2007 제어로봇시스템학회 국내학술대회 논문집 Vol.2007 No.5

나이지리아 공업소유권제도

서상욱 한국발명진흥회 1979 特協 Vol.4 No.8

건축공사 착공 전 단계의 공정리스크 관리도구 개발 - 철골공사 중심으로 -

서상욱,윤유상,김선국,Suh Sang-Wook,Yoon You-Sang,Kim Sun-Kook 한국건설관리학회 2005 건설관리 : 한국건설관리학회 학회지 Vol.6 No.1

건축공사에서의 리스크 관리자들은 전체 공기에 영향을 미치는 공정리스크 관리에 대한 중요성에 대해 공감하고 있지만 그 에 대한관리 절차 및 도구 등이 체계화되어 있지 않아 공정관리에 어려움을 겪고 있다. 또한 기존의 리스크 관련 연구에서의 리스크 분류체계는 현장업무 중심으로 이루어지지 않아 실용화되기에 한계가 있다. 따라서 본 연구에서는 전체 공정에 많은 영향을 미치는 철골공사를 대상으로 공사 프로세스 중심의 리스크 분류체계와 주요 공정 리스크 요인과 연계한 업무 플로우를 제시하였고, 공정리스크 관리업무의 효율성을 제고하기 위해 공정리스크 중요도를 분석하였으며, 이를 기반으로 공정 리스크 요인별 대응방안 및 세부대책으로 이루어진 공정 리스크 관리 도구를 개발하였다. The purpose of this study is to develop a supporting tool for efficient management, at preconstruction phase, of the schedule risk that is able to generate at construction phase. The main contents of this study to develop a practical tool are as follows. First steel work was selected as a relevant trade and a risk breakdown structure focused on the process of steel work having large effect on total construction process was made. Secondly, the work flow considering schedule risk factor was made and schedule risks that must be managed preferentially through analyzing the grade of importance for risk was selected. Finally, based on above two procedure, the management form for schedule risk was developed It is necessary to accumulate abundant data for schedule risk for other construction process and to develop a manual and a schedule risk management system.

부정경쟁행위규제의 법적고찰

서상욱 한국발명진흥회 1980 特協 Vol.5 No.12

개발도상국의 지속 가능 성장을 위한 “국가측정표준 인프라 구축!”

서상욱 과학기술정책연구원 2011 과학기술정책 Vol.- No.185

국내 재난현장 응급의료시설 관리방안에 관한 연구

서상욱 한국의료복지건축학회 2019 의료·복지 건축 Vol.25 No.4

Purpose: Despite the fact that the needs for disaster emergency medical facilities to minimize casualties are increasing, research for emergency medical facilities is insufficient compared to research for DMAT investment. A management strategy for emergency medical facilities in disaster site needs to be proposed. Methods: Recently there was introduction of mobile hospital system using unit modular method, but it was found out to be used only in disaster emergency training. Emergency medical facilities in disaster site require various tasks. Examination for our research was carried out through consultations with emergency medical and mobile hospital expert because there is no practical use case to apply Emergency Medical Facilities in Korea. Result: In this research we proposed a management strategy to manage and operate emergency medical facilities composed of tent, unit module and container in the aspects of management efficiency. Implications: It is highly expected to establish a foundation for fast and accurate disaster emergency medical facilities deployment by applying the results of our research to Emergency response manual of disaster emergency medical service.

Bluetooth network for group behavior of multi-agent robotic system

서상욱,고광은,장인훈,심귀보,황세희 한국지능시스템학회 2007 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.7 No.1

Multi-Agent Robotic System (MARS) is a system that independent autonomous robots in the restricted environments infer their status from pre-assigned conditions and operate their jobs through the cooperation with each other. In the MARS, a robot contains sensor part to percept the situation around themselves, communication part to exchange information, and actuator part to do given work. Especially, in order to cooperate with other robots, communicating with other robots is one of the essential elements. Because Bluetooth has many advantages such as low power consumption, small size module package, and various standard protocols, Bluetooth is rated as one of the efficient communicating technologies which can apply to small-sized robot system. In this paper, we will develop Bluetooth communicating system for autonomous robots. For the purpose, the communication system must have several features separated module, flexible interface. We will discuss how to construct and what kind of procedure to develop the communicating system.

전자상거래 유통물류 패키징의 국내 물류환경부하 분석

서상욱,임미진,오재영,Suh, Sanguk,Lim, Mijin,Oh, Jae Young 한국포장학회 2017 한국포장학회지 Vol.23 No.2

The amount of delivered parcels have been increasing according to the change and expansion of consumption pattern through e-commerce, and they are required to minimize breakout or failure under the delivery. In this study, we measured and analyzed the distribution environment data (vibration and impact) occurred in the packaging, which were prepared with 5 types by the weight and dimension, distributed from Seoul to Busan in Korea by 2 parcel delivery service companies through e-commerce order. Date showed the parcels had 3-5 times of drop impact and 0.3-0.7 m of drop height on average, and 0.8 Grms of vibration acceleration from equivalent equation to the vertical direction. The significant gap in service quality was not found between 2 parcel delivery service companies. This study is expected to be useful for designing the suitable packaging in order to enhance safe transportation of the delivered packaging, and furthermore useful for developing Korean testing method for Field-to-Lab simulation.

Behavior Learning of Swarm Robot System using Bluetooth Network

서상욱,양현찬,심귀보 한국지능시스템학회 2009 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.9 No.1

With the development of techniques, robots are getting smaller, and the number of robots needed for application is greater and greater. How to coordinate large number of autonomous robots through local interactions has becoming an important research issue in robot community. Swarm Robot Systems (SRS) is a system that independent autonomous robots in the restricted environments infer their status from preassigned conditions and operate their jobs through the cooperation with each other. In the SRS, a robot contains sensor part to percept the situation around them, communication part to exchange information, and actuator part to do a work. Especially, in order to cooperate with other robots, communicating with other robots is one of the essential elements. Because Bluetooth has many advantages such as low power consumption, small size module package, and various standard protocols, it is rated as one of the efficient communicating technologies which can apply to small-sized robot system. In this paper, we will develop Bluetooth communicating system for autonomous robots. And we will discuss how to construct and what kind of procedure to develop the communicating system for group behavior of the SRS under intelligent space.