1. 1 Department of Industrial Design, Faculty of Design and Architecture , Universiti Putra Malaysia , Serdang , Selangor , , Malaysia .
2. 2 Yantai Institute of Science and Technology , Yantai , Shandong , , China .
3. 3 Department of Architecture, Faculty of Design and Architecture , Universiti Putra Malaysia , Serdang , Selangor , , Malaysia .