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산림부문 관련 국제적 논의 동향과 시사점: 유엔산림포럼을 중심으로
최은호,김래현,김명길 한국산림과학회 2018 한국산림과학회지 Vol.107 No.4
In accordance with the appearance of global issue called Sustainable Development Goals (SDGs), United Nations Forum on Forests (UNFF) has shown a significant progress in such as emphasizing the potential contribution of forest sector and establishing long-term strategies. In relation to the SDGs which would be discussed mainly in different international agreements and conferences related to forest sector until 2030, this study reviewed the discussion trend by establishing integrated databases and focusing on UNFF which serves as an integrated coordinator. It also aims to identify the meaning of United Nations Strategic Plan for Forest (UNSPF) established by UNFF. Furthermore, the following proposals on policies are presented in this study aiming for active discussion on forest sector not only in international but also in national context, and to implement UNSPF and GFGs effectively in a long-term manner: (1) Cooperation among sectors, organizations, and countries is more important than anything to make an active discussion on forest sector; (2) Recognizing and understanding the role and contributions of forests should be encouraged in actual field, and it should serve as the basis when establishing national policies and goals; (3) By fully utilizing UNFF report which is for the review of UNSPF implementation, a rational reporting system should be provided, and simultaneously, the efficiency on reporting items in the process of implementation should be improved. 지속가능발전목표(Sustainable Development Goals, SDGs)라는 범지구적 이슈가 등장하면서 유엔산림포럼 (UN Forum on Forests, UNFF)은 산림부문의 기여 가능성을 강조하고 장기 전략을 수립하는 등 큰 진전을 보였다. 2030년까지 산림과 관련된 국제협약 및 국제회의에서 논의의 주축이 될 SDGs 이행과 관련하여 종합 정보체계 를 구축하고 통합적인 조정자 역할을 하는 등 그 역할이 주목받고 있다. 따라서 본 연구에서는 최근 UNFF의 논 의 동향을 검토하는 한편 UNFF에서 수립한 유엔산림전략계획(United Nations Strategic Plan for Forest, UNSPF)의 의미를 확인하였다. 이를 통해 국내에서도 지속가능발전을 위한 산림부문의 논의가 활성화되고 UNFF의 장기전략 (UNSPF)과 글로벌산림목표(Global Forest Goals, GFGs)가 효과적으로 이행될 수 있도록 다음의 세 가지 정책적 제언을 제시하고자 한다. 첫째, 산림부문의 논의를 활성화하기 위하여 부문, 기관, 국가 간 협력이 무엇보다 중요하다. 둘째, 실제 임업 현장에서도 산림부문의 역할과 기여에 대한 인식과 이해가 고취되고 이를 바탕으로 한 국내정책과 목표가 수립되어 야 한다. 셋째, UNSPF 이행을 점검하기 위한 UNFF 보고서를 적극적으로 활용하여 합리적 보고체계를 마련함과 동시에 다양한 목표의 국가보고 간 중복성을 검토하는 등 보다 효율적인 보고체계를 마련해야 한다.
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최은호 한국생산제조학회 1997 한국공작기계학회지 Vol.6 No.3
Eigenvalue analysis of vibration mode and an analysis by frequency response among the methods of predicting gear noise are related with transmitting sound of vibration. In this study we intended to reduce the vibration noise of differential gear by reducing torque fluctuation of drive pinion shaft which causes vibration noise of differential gear in rear wheel drive vehicles. For this we developed multi-degree of freedom analysis model in which mass moment of inertia and torsional spring combined and we examined the influence of torsional vibration of driveline elements by performing forced vibration analysis of engine excitation torque. We studied the methods for reducing torsional vibration of driveline according to the design factor of propeller shaft and examined the effects reducing vibration in differential gear by applying flexible coupling.
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Optimum suspension unit design for enhancing the mobility of wheeled armored vehicles
최은호,류재봉,조진래,임오강 대한기계학회 2010 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.24 No.1
At the concept design stage of an armored vehicle, most design effects focus on firing accuracy, mobility and physical properties of the vehicle which are directly related to the firing power. This paper addresses an optimal design of the suspension unit of a four-wheeled armored vehicle to maximize the mobility performance after firing, which is characterized by the stabilizing time and the vertical acceleration of the driver’s seat after firing. For the numerical analysis and design, a half-car dynamic model consisting of four degrees and four design variables, spring and damping coefficients of suspension and tire is constructed. The response surface functions (RSFs) of both the stabilizing time and vertical acceleration are approximated through the dynamic analysis of the four-degree half-car model. The objective function is defined by a weighted linear combination of the stabilizing time and the vertical acceleration, and the resulting optimization of the vehicle mobility is carried out by the PLBA algorithm. To support the validity of the proposed optimization procedure,illustrative numerical experiments are also performed.
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최은호,이상훈 대한전자공학회 1994 전자공학회지 Vol.21 No.3
본고에서는 향후 기업정보 통신망을 정보를 전달하는 하부구조인 전달망과 망의서비스를 제어 관리하고 망자원을 운용 관리하는 상부 구조인 논리망으로 나누어 향후 ATM시대의 기업 정보통신망구조를 정립해 본다. 기존에 음성과 데이타별로 별개의 기업 통신망으로 구성되온 기업 정보통신망에서 모든 정보 전달망이 ATM기술로 통합되고 정보 논리망이 기업의 모든 정보와 기업구성원을 하나로 네트워킹하게 될 것으로 전망된다. ATM시대의 기업 정보통신망은 기업의 가장 중요한 신경망으로써 기업의 경쟁력과 경영의 효율화를 극대화시켜 줄 것이다.
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최은호,조진래,임오강 한국풍공학회 2015 Wind and Structures, An International Journal (WAS Vol.20 No.6
A multi-platform offshore wind farm is receiving the worldwide attention for the sake of maximizing the wind power capacity and the dynamic stability at sea. But, its wind power efficiency is inherently affected by the interference of wake disturbed by the rotating blades, so its layout should be appropriately designed to minimize such wake interference. In this context, the purpose of this paper is to introduce a layout optimization for multi-platform offshore wind farm consisted of 2.5MW spar-type floating wind turbines. The layout is characterized by the arrangement type of wind turbines, the spacing between wind turbines and the orientation of wind farm to the wind direction, but the current study is concerned with the spacing for a square-type wind farm oriented with the specific angle. The design variable and the objective function are defined by the platform length and the total material volume of the wind farm. The maximum torque loss and overlapping section area are taken as the constraints, and their meta-models expressed in terms of the design variable are approximated using the existing experimental data and the geometry interpretation of wake flow.
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