Multi-Lifecycle Design Strategies: Applications in Plastics for Durable Goods

1996 ◽  
pp. 383-394
Author(s):  
Donald H. Sebastian ◽  
Marino Xanthos ◽  
Ezra Ehrenkrantz ◽  
Ming C. Leu ◽  
Kamalesh K. Sirkar ◽  
...  
Keyword(s):  
Durable Goods ◽  
Design Strategies ◽  
Lifecycle Design

Pre-Life and End-of-Life Combined Profit Optimization With Predictive Product Lifecycle Design

2012 ◽  
Author(s):  
Jungmok Ma ◽  
Minjung Kwak ◽  
Harrison M. Kim
Keyword(s):  
End Of Life ◽  
Design Strategy ◽  
Design Stage ◽  
Design Strategies ◽  
Product Lifecycle ◽  
Mining Technique ◽  
A Cell ◽  
Trend Mining ◽  
A Company ◽  
Lifecycle Design

The Predictive Product Lifecycle Design (PPLD) model that is proposed in this paper enables a company to optimize its product lifecycle design strategy by considering pre-life and end-of-life at the initial design stage. By combining lifecycle design and predictive trend mining technique, the PPLD model can reflect both new and remanufactured product market demands, capture hidden and upcoming trends, and finally provide an optimal lifecycle design strategy in order to maximize profit over the span of the whole lifecycle. The outcomes are lifecycle design strategies such as product design features, the need for buy-backs at the end of its life, and the quantity of products remanufacturing. The developed model is illustrated with an example of a cell phone lifecycle design. The result clearly shows the benefit of the model when compared to a traditional Pre-life design model. The benefit would be increased profitability, while saving more natural resources and reducing wastes for manufacturers own purposes.

Ultralight design strategies: dall'archetipo al progetto

TERRITORIO ◽  
2018 ◽  
pp. 158-166
Author(s):  
Mickeal Milocco
Keyword(s):  
Design Strategies

Towards a Design of Active Oxygen Evolution Catalysts: Insights from Automated Density Functional Theory Calculations and Machine Learning

2019 ◽  
Author(s):  
Seoin Back ◽  
Kevin Tran ◽  
Zachary Ulissi
Keyword(s):  
Machine Learning ◽  
Oxygen Evolution ◽  
Active Sites ◽  
Density Functional ◽  
Chemical Space ◽  
Density Functional Theory Calculations ◽  
Catalyst Design ◽  
Transition Metal Catalysts ◽  
Oxide Materials ◽  
Design Strategies

<div> <div> <div> <div><p>Developing active and stable oxygen evolution catalysts is a key to enabling various future energy technologies and the state-of-the-art catalyst is Ir-containing oxide materials. Understanding oxygen chemistry on oxide materials is significantly more complicated than studying transition metal catalysts for two reasons: the most stable surface coverage under reaction conditions is extremely important but difficult to understand without many detailed calculations, and there are many possible active sites and configurations on O* or OH* covered surfaces. We have developed an automated and high-throughput approach to solve this problem and predict OER overpotentials for arbitrary oxide surfaces. We demonstrate this for a number of previously-unstudied IrO2 and IrO3 polymorphs and their facets. We discovered that low index surfaces of IrO2 other than rutile (110) are more active than the most stable rutile (110), and we identified promising active sites of IrO2 and IrO3 that outperform rutile (110) by 0.2 V in theoretical overpotential. Based on findings from DFT calculations, we pro- vide catalyst design strategies to improve catalytic activity of Ir based catalysts and demonstrate a machine learning model capable of predicting surface coverages and site activity. This work highlights the importance of investigating unexplored chemical space to design promising catalysts.<br></p></div></div></div></div><div><div><div> </div> </div> </div>

The Dynamics of Daylighting at a Residential College Building with the Internal Courtyard Arrangement

2015 ◽  
Vol 9 (3) ◽  
pp. 148
Author(s):  
Adi Ainurzaman Jamaludin ◽  
Hazreena Hussein ◽  
Nila Keumala ◽  
Ati Rosemary Mohd Ariffin
Keyword(s):  
Field Measurement ◽  
Mean Value ◽  
Design Strategies ◽  
Residential College ◽  
Bioclimatic Design ◽  
Living Space ◽  
Entrance Door ◽  
Wall Openings

Dayasari residential college building was designed with the internal courtyard that allows for numerous implementations of bioclimatic design strategies, especially on daylighting. The field measurement was conducted at eight unoccupied student rooms, selected as samples to represent ten scenarios and orientations that concerned with the level of radiation and penetration of sunlight. This study reveals the contribution of the internal courtyard in the residential college which allows the daylight penetration at the corridor areas and interior of the rooms through the transom over the entrance door, up to ten hours daily. Different amounts of daylight were measured in specific room scenarios to suggest on the most comfortable indoor living space. The recorded mean value for indoor varied from 37 to 286 lux, while in the corridor area 192 to 3,848 lux. However, the use of the large overhangs over the windows, wall openings in the room and trees with large canopy in the landscape setting should critically justify when the adequacy of daylight was drastically reduced in certain rooms.    

Inflation Stabilization and the Consumption of Durable Goods

1998 ◽  
Author(s):  
Jose de Gregorio ◽  
Pablo E. Guidotti ◽  
Carlos A. Vegh
Keyword(s):  
Durable Goods ◽  
Inflation Stabilization
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