The objective of this research is to development of a parametric design system for membrane structures. The parametric design platform for the spatial structures has been designed and implemented. Rhino3D is used as a 3D graphic kernel and Grasshopper is introduced as a parametric modeling engine. Modeling components such as structural members, loading conditions, and support conditions are developed for structural modeling of the spatial structures. The interface module with commercial structural analysis programs is implemented. An iterative generation algorithm for design alternatives is a part of the design platform. This paper also proposes a design approach for the parametric design of Spoke Wheel membrane structures. A parametric modeling component is designed and implemented. SOFiSTik is examined to interact with the design platform as the structural analysis module. The application of the developed interface is to design optimally Spoke Wheel Shaped Ductile Membrane Structure using parametric design. It is possible to obtain objective shape by controlling the parameter using a parametric modeling designed for shape finding of spoke wheel shaped ductile membrane structure. Recently, looking at the present Construction Trends, It has increased the demand of the large spatial structure. But, It requires a lot of time for Modeling design and the Structural analysis. Finally an optimization process for membrane structures is proposed.

GSA (Gaming Standards Association)’s S2S (System to System) standard provides harmonizing protocol between any gaming and non-gaming host systems in the casino back office and Casino business area. Its technical details and implementation is rarely open to the academy and public. This paper discuss our ongoing implementation of S2S protocol engine and systems, which is, to our knowledge, the first case in Korea. Our design leverages open source technologies such as Linux, Python, Django, Tornado, JQuery, and lxml. Describing the architecture and an application scenarios of ‘PlayerInfo’ class, we demonstrate how the open source technology can be utilized in the S2S system design.

NSS (Navigation satellite system) provides the information for determining the position, velocity and time of users in real time using satellite-networking, and is classified into GNSS (Global NSS) and RNSS (Regional NSS). Although GNSS services for global users, the exactitude of provided information is dissatisfied with the degree required in modern systems such as unmanned system, autonomous navigation system for aircraft, ship and others, air-traffic control system. Especially, due to concern about the monopoly status of the countries operating it, some other countries have already considered establishing RNSS. The RNSS services for users within a specific area, however, it not only gives more precise information than those from GNSS, but also can be operated independently from the NSS of other countries. Thus, for Korean RNSS, this paper suggests the methodology to design the satellite constellation considering the regional features of Korean Peninsula. It intends to determine the orbits and the arrangement of navigation satellites for minimizing PDOP (Position dilution of precision). PGA (Parallel Genetic Algorithm) geared to solve this nonlinear optimization problem is proposed and STK (System tool kit) software is used for simulating their space flight. The PGA is composed of several GAs and iterates the process that they search the solution for a problem during the pre-specified generations, and then mutually exchange the superior solutions investigated by each GA. Numerical experiments were performed with increasing from four to seven satellites for Korean RNSS. When the RNSS was established by seven satellites, the time ratio that PDOP was measured to less than 5 (i.e. better than ‘Good’ level on the meaning of the PDOP value) was found to 94.3% and PDOP was always kept at 10 or less (i.e. better than ‘Moderate’ level).

A new design concept for integrated thermal energy storage system is suggested to increase energy saving rate for heating and cooling system of the closed glass greenhouse. Heat pump of air source is installed in the mechanical room and air flows then controlled by damper system located between the greenhouse and outdoor environments. A damper control algorithm is designed to enhance the usage of excessive energy in the glass greenhouse. Since the proposed system is installed at the actual glass greenhouse site for experimental verification of energy savings, the proposed system with damper control is compared with conventional greenhouse heating and cooling system. From results, it is found that more than 10% increase of energy saving rate is achieved.

다단 분리막 공정은 압력변환, 열교환, 수분제거등을 위한 공정 설비들과 연계 운영된다. 또한 sweeping 가스를 도입하기도 하고, 분리막 연결 형태를 변경 하기도 하며, 압력비등을 조절하기도 한다. 따라서, 분리막 공정설계는 막 면적 및 운전 압력을 결정을 포함하여 다단 분리막의 configuration 선정, 분리막 소 재의 선택, 공정의 시스템적 구성, 부가 설비와의 통합 설계 등 여러 설계 요소 들을 통합적으로 분석하며 최적 공정을 구성하게 된다. 본 발표에서는 컴퓨터를 활용한 모델링, 전산 모사 및 최적화를 통해 최적의 분리막 공정 및 운전 조건 을 도출하는 기법들을 설명하며, 이러한 전산적 설계 기법들을 분리막 공정 스케일업과 신공정 개발에 활용하는 방안에 대하여 소개하고자 한다.

The aim of these studies are to provide a basic data for the development of high-efficiency environmental improvement system that can parallel the cage(henhouse) and hot and cold potable water supply for increased summer heat stress relief and winter feed efficiency by optimal design. The cage area is 273m2. The air-to-water heat pump with 20RT capacity was used for heating and cooling. The control was used as an electric hot water boiler. For calculating heating load determined the cage size, materials, heat pump capacity, heating capacity, heat storage tank, and drinking water tank capacity etc. Therefore the capacity of heat pump was set-up using 20RT. The cage was built as a prefabricated panels henhouse of 13×21×4.5 m (width×depth×height). The heat storage tank and was drinking water tank capacity was constructed 3tons and 10 tons, respectively. In future, it is thought that optimal design considering the cage size and hen breeding scale is required.

본 논문에서는 MRV 규제 대응을 위해 선박 운항효율데이터 수집 및 검증 시스템을 구축하고 이를 활용하여 해운선사 업무 지원과 국가 온실가스 인벤토리 산정이 가능한 국제해운 에너지효율 포탈 시스템을 설계하였다. 시스템 요구조건을 도출하기 위하여 EU MRV 법안과 IMO MRV 논의사항, 해운선사의 선박에너지효율과 온실가스규제 대응 및 국제해운 온실가스 통계 현황에 대하여 분석 하고 선박 에너지효율과 온실가스 배출량 데이터 수집을 위하여 선내 장비, 에너지효율 측정 장비, 운항보고서를 활용한 데이터 수집 모듈과 선박에서 수집된 데이터를 육상으로 전송하기 위해 관리가 용이하고 사용량이 최소화된 데이터베이스기반 전송 모듈을 설계하 였다. 수집된 데이터의 표준보고양식 변환, 모니터링, 통계 및 분석, 검증, 보고서 자동생성과 국가 온실가스 인벤토리 지원이 가능한 국제해운 에너지 포탈시스템을 설계하였다.

Trends of integrating products and services lead to the emergence of Product-Service System (PSS). To implement and embody a PSS solution in new product development, a comprehensive design framework is allowed designers to facilitate the design factors of the PSS in complex business environments. A physical product, containing functionalities for services, is the role of medium between customers and a manufactures. Customers can access those metaphysical interfaces to utilize the product fully or expand its performances. The PSS is aiming to prolong its lifecycle while maintaining its expected quality. Since the quality can be represented as a measure which belongs to user’s perspective, guaranteeing certain level of quality can be interpreted to sustaining customer satisfaction. The objective of this paper is to propose a PSS design framework to identify design factors for developing products and services by integrating object-oriented concepts and blueprinting in context of a business ecosystem. The proposed model is developed based on relationship products and services matching with their design factors. The products and the services are then brought together to form a PSS. Functions and processes can be categorized to identify the design factors in different levels using the object-oriented concepts. Objected-oriented concepts provide PSS analysis tools for describing a business process or a workflow process in the PSS. The blueprint is used to identify the relationships between the products functions and the service processes that are offered as part of a job. To demonstrate of the effectiveness of the proposed model, we use a case study involving a smart phone.

매년 증가하고 있는 풍해에 대한 대책으로서의 내풍설계는 필수적이다. 사과나무 지주시스템의 내풍설계를 위해서는 우선적으로 사과나무에 작용하는 풍하중을 파악해야 하고, 이를 위해서는 사과나무의 항력계수 산정이 필요하다. 기존 항력계수 산정 방법에서 발생할 수 있는 실험적 오차 등의 문제점을 보완하고자, 하중 측정 장치의 제작을 통한 풍하중 직접 측정 및 이를 통한 항력계수의 역추정 과정을 수행하였다. 풍속이 증가할수록 항력계수는 감소하며 점차 수렴하는 경향을 나타냈으며, 풍속 30m/s 일 때, 전면적 기준 약 0.176, 순면적 기준 약 0.356 의 값을 갖는 것으로 나타났다.

본 연구에서는 안동지역 특용작물 재배농가의 요구를 반영 하여 사용자 편이성이 강화된 정보화의 방안으로 스마트폰을 활용한 정보화시스템 구축을 다음과 같이 검토하였다. 본 연구의 방법은 연구의 대상인 안동지방 특용작물재배농 가에 대한 정보화요구 자료수집과 분석, 실제 사용자인 특용 작물 생산농가의 의견수렴을 거쳐 DB의 구축, 프로그램레이 아웃을 거쳐 농업경영장부와 영농일지가 반영된 일원화시스템 구축을 하였으며, 산출물은 농민들의 시연을 거쳐 보완하였다. 연구의 결과는 다음과 같다. 1. 스마트폰을 기반으로 한 판매관리시스템은 정보화에 익 숙하지 않은 농민들도 쉽게 사용할 수 있어 농가경영개선에 도움을 줄 수 있었다. 2. 스마트폰연계 영농시스템은 컴퓨터와 연동하여 웹기반 영 농일지 및 영농관리에 활용할 수 있었다. 3. 소비자 입장에서는 친환경농산물 생산에 필요한 생산이 력관리를 제공할 수 있었다. 향후 농업인구 감소와 급속한 고령화의 진행은 농업산업의 변화를 요구하고 있으며 본 연구가 스마트시대로의 변화 속에 농촌정보화의 한 축을 담당할 수 있을 것이다.