Decision-making In Design Process Research Articles

Ontology-based approach for structural design considering low embodied energy and carbon

Buildings account for a large share of energy consumption and greenhouse gas emission. Numerous methods have been applied to operate buildings more efficiently. However, the embodied energy and carbon are identified increasingly important in terms of sustainability throughout building life cycle. In traditional building structural design approach, the engineers pay little attention on environmental aspect which has been recognised as one of the most important factors to consider in modern integrated building design approach. The emergence of Semantic Web technologies provides more opportunities to assist structural engineers in improving building sustainability. The study presented in this paper investigates how ontology and Semantic Web rules can be used in a knowledge-based system, to represent information about structural design and sustainability, and to facilitate decision-making in design process by recommending appropriate solutions for different use cases. A prototypical system named OntoSCS (Ontology for Sustainable Concrete Structure), including a Web Ontology Language (OWL) ontology as knowledge base and SWRL rules providing reasoning mechanism, is developed to offer optimised structural design solutions and selections of material suppliers. Embodied energy and CO2 are used in the system as indicators to evaluate sustainability of structure. Both ontology reasoner and case studies are employed for system validation.

장수명 공동주택 설계 프로세스 구축을 위한 보금자리주택 계획사례 연구 - 내곡지구 현상설계를 중심으로 -

Recently, apartments have had several fundamental problems in planning uniformity caused by fixed space programs and difficulties of maintenance. So decision-makings become more important in design process which were essential to performance realization of long-life housing. Therefore, this study aims to analyze the plans of the Bogeumjari Nae-gok based on the applied designs, and suggests improvements for advanced design process of the long-life housing in the domestic market. This research procedure are as follows: (1) Analyze design guide, district land development plan and local code which have influence on design limitation. (2) Compare partial plans of joined designs and analyze each design characters (3) Implement case studies of design process due to design timetable and design elements of Nae-gok. In result, this study suggests significant fundamental materials for advanced decision-making in design process of long-life housing: details credibility and noise control, etc. This research could be useful in making integrated design process applied for long-life housing.

鉄道車両の内装モジュール設計に対するリスク評価の応用

In the design of railroad train, main interests have been placed on stiffness, mass and strength. Therefore, great improvement has been achieved in functional point of view. For further development, however, it is necessary to provide a procedure for the decision-making in design process. For example, if design change such as geometry variation or material replacement occurs, it is required to evaluate the validity of the action. For this purpose, a rational procedure to assist the decision-making is needed. However, the research from this point of view has not been done sufficiently so far.In this paper, we attach importance to the decision-making performance in risk assessment. Though conventional risk assessment is used in the operational stage such as maintenance or inspection, it is investigated to apply the risk assessment in the design stage of railroad train. Specifically, the design of ceiling-shelf module is considered. By introducing the risk evaluation, not only the evaluation of function of single part but also the total performance for safety can easily be treated. Besides, uncertainty property is also able to be included in the assessment. After the formulation of risk assessment is stated, the application for several decision-making in ceiling-shelf module will be shown.