Along with increase in affective value of product, "bringing happiness to people" has become product designers' mission nowadays. Starting from viewpoint of emotional design, this study discusses rational and perceptual interactive relationship between human and products through pursuing "eudaimonia" philosophy, and utilizes multiple-perspective analysis to know perceptual connotation and design strategy of product eudaimonia perception. Three issues are explored: (1) The Chinese and western theories about "eudaimonia". (2) Experts and users' viewpoints of eudaimonia perception of a product. (3) The design communication of eudaimonia perception on products. Research results show that connotations of product eudaimonia perception include three aspects: physiological, psychological and spiritual, and this is in agreement with Maslow's Hierarchy of Needs. In addition, the generalized 9 dimensions and 20 design indicators of perceptive connotations also demonstrate key features of product eudaimonia perception design. Aimed at beautifying user's somatic and psychic environment as well as delivering optimistic and positive energy, product eudaimonia perception design hopes to construct happy ethics of product design by establishment of product eudaimonia design mode and make "eudaimonia" spread along with expanding of products.
Capturing and storing CO2 is of prime importance. The rate of CO2 sequestration is often limited by the hydration of CO2, which can be greatly accelerated by using carbonic anhydrase (CA, EC 4.2.1.1) as a catalyst. In order to improve the stability and reusability of CA, a silica-condensing peptide (R5) was fused with the fastest known CA from Sulfurihydrogenibium azorense (SazCA) to form R5-SazCA; the fusion protein successfully performed in vitro silicification. The entrapment efficiency reached 100% and the silicified form (R5-SazCA-SP) showed a high activity recovery of 91%. The residual activity of R5-SazCA-SP was two-fold higher than that of the free form when stored at 25 °C for 35 days; R5-SazCA-SP still retained 86% of its activity after 10 cycles of reuse. Comparing with an uncatalyzed reaction, the time required for the onset of CaCO3 formation was shortened by 43% and 33% with the addition of R5-SazCA and R5-SazCA-SP, respectively. R5-SazCA-SP shows great potential as a robust and efficient biocatalyst for CO2 sequestration because of its high activity, high stability, and reusability.
Nowadays, people have an ever stronger desire for happiness feeling and thus cause an enhancement in product spirituality. Happiness-image product deepens product connotation and brings sense of happiness besides aesthetic and pleasant perception. Feeling of happiness is originated from sensory intuition as well as cultural and life experience. From viewpoint of Kansei design, this study discusses definition, characteristics and expressing modes of happiness-image product and summarizes design patterns of such products. Focus group is used for two-stage investigation into product characteristics: explicit elements and implicit elements are obtained from product form and product connotation respectively. Finally, design patterns of happiness-image products are summarized according to investigation results. This research finds happiness image can be reflected by color, shape and texture, and consumers' cultural backgrounds and experiences are the key to happiness feeling. Purposes of this study include: investigate spiritual value of product and use introduction of happiness image to strengthen people's everyday perception of product, thus to promote invisible connection and product-human attachment.
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