Probabilistic Graphical Models as Tools for Evaluating the Impact of Usage-Context on the Environmental Performance of Products

2012 ◽  
Author(s):  
Cassandra Telenko ◽  
Carolyn Seepersad
Keyword(s):  
Life Cycle ◽  
Graphical Models ◽  
Environmental Performance ◽  
Probabilistic Graphical Models ◽  
Environmentally Conscious ◽  
Engineered Systems ◽  
Environmentally Conscious Design ◽  
Usage Context ◽  
The Impact ◽  
The Relationship

Environmentally conscious design is focused on reducing the environmental impact of engineered systems, but common practice in life cycle analysis overlooks the relationship between a product’s usage-context and its environmental performance. Existing studies rarely consider operational variability or the correlation between performance, design, and usage variables. Probabilistic graphical models (PGMs) provide the capability of not only evaluating uncertainty and variability of product use, but also correlating the results with the product’s features and usage context. This discussion explores the use of PGMs as a tool for evaluating operational variability in products and including the results in life cycle inventories. The tool is illustrated for environmentally conscious product design through an example study of an electric kettle.

Comparison of environmental performance between plastic and steel fuel tanks

2002 ◽  
Vol 216 (11) ◽  
pp. 1443-1457 ◽  
Author(s):  
C-y Tung ◽  
M H Wang
Keyword(s):  
Life Cycle ◽  
Product Design ◽  
Environmental Performance ◽  
Early Stage ◽  
Environmentally Conscious ◽  
Performance Technique ◽  
Life Cycle Design ◽  
Fuel Tanks ◽  
Environmentally Conscious Design ◽  
Whole Life Cycle

Increasing awareness of environmental burdens has led companies and designers to initiate design for the environment (DFE) programmes, which consider the design of products from the ‘cradle to grave’ and is also known as ‘life-cycle design’. In this paper, the use of a novel environmental performance technique to be used at the early stage of product design is presented. This technique, which is to be used as a framework for green product design, is demonstrated in this paper by evaluating the environmental performance between plastic and steel fuel tanks. The fuel tank comparison can be divided into five steps. In the first four steps, a modified house of quality (HOQ) is used to analyse the performance of fuel tanks in terms of requirements of environmentally conscious design. The final step is an overall assessment that synthesizes the results from the previous four analyses. As a result, the comprehensive environmental effects in the whole life cycle of fuel tanks are captured in the early stage of design.

Reliability Analysis of Repairable Systems Subject to System Modifications

1998 ◽  
Author(s):  
Z. H. Jiang ◽  
L. H. Shu ◽  
B. Benhabib
Keyword(s):  
Life Cycle ◽  
Steady State ◽  
Cost Estimation ◽  
Life Cycle Cost ◽  
Repairable Systems ◽  
Environmentally Conscious ◽  
Reliability Indices ◽  
Reliability Models ◽  
System Reconfiguration ◽  
Environmentally Conscious Design

Abstract This paper approaches environmentally conscious design by further developing a reliability model that facilitates design for reuse. Many reliability models are not suitable for describing systems that undergo repairs performed during remanufacture and maintenance because the models do not allow the possibility of system reconfiguration. In this paper, expressions of reliability indices of a model that allows system reconfiguration are developed to enable life-cycle cost estimation for repairable systems. These reliability indices of a population of repairable systems are proven theoretically to reach steady state. The expressions of these indices at steady state are obtained to gain insight into the model behavior, and to facilitate life-cycle cost estimation.

Environmental management practices, operational competitiveness and environmental performance

2018 ◽  
Vol 29 (3) ◽  
pp. 588-607 ◽  
Author(s):  
Samuel Famiyeh ◽  
Ebenezer Adaku ◽  
Kwasi Amoako-Gyampah ◽  
Disraeli Asante-Darko ◽  
Charles Teye Amoatey
Keyword(s):  
Environmental Management ◽  
Developing Country ◽  
Environmental Performance ◽  
Management Practices ◽  
Operational Performance ◽  
Content Type ◽  
Environmental Management Practices ◽  
The Impact ◽  
The Relationship ◽  
Positive Effect

Purpose The purpose of this paper is to examine the relationship between environmental management practices (EMP) and competitive operational performance with respect to reduced cost, improved quality, improved flexibility and improved delivery as well as overall environmental performance, of firms, using data from a developing country. Design/methodology/approach The study employed a survey approach with responses from 164 informants from different industries and used partial least squares structural equation modeling to examine the relationship between EMP and competitive operational performance and their overall impact on the environmental performance of firms. Findings The results indicate that EMP by firms have a significant positive effect on firms’ competitive operational performance. Again, firms’ competitive operational performance has a partial positive effect on the overall environmental performance. It was also realized that the EMP initiated by a firm have a direct positive impact on the overall environmental performance of the firm. Research limitations/implications There is the need for organizations to take steps to plan and implement EMP since it is likely to enhance their competitive operational performance as well as their overall environmental performance. Practical implications The findings demonstrate the impact of EMP on competitive operational performance as well as on the overall environmental performance of firms. This is important as firms struggle with balancing investments in those practices against the perceived benefits that might be obtained from the practices. Originality/value The work provides insights and adds to the literature in the area of EMP and firm performance by providing evidence from a developing country environment. This study is among the few that have investigated the impact of EMP on firm performance in developing country environments.

A Requirement-Centered Design Support System for the Environmentally Conscious Product

2000 ◽  
Author(s):  
Kei Kurakawa ◽  
Kumiyo Nakakoji ◽  
Takashi Kiriyama
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Visual Presentation ◽  
Design Team ◽  
Life Cycle Model ◽  
Cycle Model ◽  
Environmentally Conscious ◽  
Design Support System ◽  
Using Data ◽  
Environmentally Conscious Design

Abstract We have developed the Green Browser to support a team of designers to collaboratively construct and share the product life cycle information for environmentally conscious design. We developed the ReqC model (Requirement-Centered Model) and the GLC model (Green Life-Cycle Model) for structuring design information in the Green Browser. The system allows the design team to construct the GLC model by chunking discourse and assigning types. It provides a visual presentation of the concept and scenario, and allows the user outside the team to share the model across different computer environments. We used Java2 and CORBA for system implementation. To test implementation of the system, we built a GLC model by using data collected in an industrial design project.

Experiences of Teaching “Life Cycle Design” Course at Tokyo Metropolitan University

Manufacturing ◽  
2003 ◽  
Author(s):  
Yasushi Umeda
Keyword(s):  
Life Cycle ◽  
Manufacturing Industry ◽  
Environmental Issues ◽  
Life Cycle Thinking ◽  
Environmentally Conscious ◽  
Tokyo Metropolitan ◽  
Life Cycle Design ◽  
Teaching Life ◽  
Metropolitan University ◽  
Environmentally Conscious Design

This paper describes the outline of “life cycle design” course the author teaches and illustrates some experiences and findings with results of questionnaires to attendees of the lecture. “Life cycle design” is a half-year course to third-year students at Tokyo Metropolitan University, Japan. The main subject is environmentally conscious design focusing on life cycle thinking. This course intends to establish general and correct viewpoints toward relationship between manufacturing industry and the environmental issues, which are indispensable knowledge as mechanical engineers, rather than to educate environmental specialists. Results of questionnaires indicate that this course succeeded in increasing students’ interest in this area and awareness of importance of the environmental issues. However, some students feel bewildered because of wide variety of topics and, therefore, lack of a central theory.

scholarly journals FORECASTING THE EFFICIENCY OF ELECTRICAL PRODUCTS TAKING INTO ACCOUNT THE STAGES OF THEIR LIFE CYCLE

2021 ◽  
pp. 63-70
Author(s):  
Alina Martynenko
Keyword(s):  
Life Cycle ◽  
Regression Model ◽  
Forecast Model ◽  
Life Cycles ◽  
Influential Factors ◽  
Consumer Value ◽  
Multifactor Regression ◽  
The Impact ◽  
The Relationship ◽  
Comprehensive Indicator

In the conditions of accelerated scientific and technological progress and social development, products can lose consumer value and, therefore, be ousted from the consumer market by other goods with a higher consumer value. In this regard, the importance of predicting product life cycles and their effectiveness is increasing. The aim of the article is to study the issue of forecasting the efficiency of electrical products taking into account the stages of their life cycle by constructing a multifactor regression model. The method of correlation-regression analysis was used to build a forecast model and determine the most influential factors for a particular motor, which determined the relationship between the comprehensive indicator and individual indicators of product efficiency. Thus, the article investigated the issue of forecasting the efficiency of electrical products taking into account the stages of their life cycle. On the example of the electric motor AIR 80 PJSC «Kharkiv Electrotechnical Plant «Ukrelectromash»» a multifactor regression model for the stage of decline is built, which includes the most important indicators of the impact on the comprehensive indicator of efficiency and allows to predict its dynamics.

Environmental Law and Constitutional and Public Law

2019 ◽  
pp. 1072-1090
Author(s):  
Ole W. Pedersen
Keyword(s):  
Life Cycle ◽  
Constitutional Law ◽  
Environmental Law ◽  
Public Law ◽  
Administrative State ◽  
Environmental Norms ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship ◽  
Law Making

This chapter examines the relationship of environmental law to public and constitutional law. More specifically, it considers ‘points of interactions’ between public and constitutional law and environmental law and shows that these points of interaction are found throughout the ‘life cycle’ of environmental law. The chapter explores the ways in which environmental law is shaped by rules and doctrines of public and constitutional law, first by discussing policy and law-making in the administrative state. It then analyses constitutional environmental norms and their functions, the local and domestic context of constitutional environmental provisions, the non-constitutional points of interaction between environmental law and public and constitutional law, and how the form and content of environmental law are shaped by domestic structures of government (and governance). The chapter concludes with an assessment of the impact of environmental law on public and constitutional law.

scholarly journals Evaluation of the Environmental Performance of Residential Building Envelope Components

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 174 ◽  
Author(s):  
Serik Tokbolat ◽  
Farnush Nazipov ◽  
Jong R. Kim ◽  
Ferhat Karaca
Keyword(s):  
Life Cycle ◽  
Environmental Performance ◽  
Residential Buildings ◽  
Ghg Emissions ◽  
Building Envelope ◽  
Comfort Level ◽  
Environmental Cost ◽  
Energy Deficit ◽  
Comfort Levels ◽  
The Impact

The role of buildings in the context of addressing the consequences of climate change and the energy deficit is becoming increasingly important due to their share in the overall amount of green house gas (GHG) emissions and rapidly growing domestic energy consumption worldwide. Adherence to a sustainability agenda requires ever-increasing attention to all stages of a building′s life, as such approach allows for the consideration of environmental impacts of a building, from design, through construction stages, until the final phase of a building′s life—demolition. A life cycle assessment (LCA) is one of the most recognized and adopted models for the evaluation of the environmental performance of materials and processes. This paper aims to perform an LCA of four different types of residential buildings in Nur-Sultan, Kazakhstan. The assessment primarily considered embodied energy and GHG emissions as key assessment indicators. Findings suggest that the operational stage contributed to more than half of the GHG emissions in all the cases. The results of the study indicate that there is a dependence between the comfort levels and the impact of the buildings on the environment. The higher the comfort levels, the higher the impacts in terms of the CO2 equivalent. This conclusion is most likely to be related to the fact that the higher the comfort level, the higher the environmental cost of the materials. A similar correlation can be observed in the case of comparing building comfort levels and life-cycle impacts per user. There are fewer occupants per square meter as the comfort level increases. Furthermore, the obtained results suggest potential ways of reducing the overall environmental impact of the building envelope components.

A Stakeholder Perspective of Sustainable Supply Chain Management

2018 ◽  
pp. 1560-1589
Author(s):  
Mohamed Gamal Aboelmaged
Keyword(s):  
Supply Chain ◽  
United Arab Emirates ◽  
Sustainable Supply Chain ◽  
Environmentally Conscious ◽  
Chain Management ◽  
Sustainable Performance ◽  
Stakeholder Perspective ◽  
United Nations Environmental Program ◽  
The Impact ◽  
The Relationship

Industrialization leaves no doubt that our planet is suffering from global warming, depletion of natural resources, pollution, waste, and other environmental concerns. Consequently, businesses, communities, and governments have been environmentally conscious and shown growing concern for sustainable development, particularly following the establishment of the United Nations Environmental Program (UNEP). This chapter provides further insights into sustainability and supply chain research through adopting a stakeholder perspective to understand drivers and consequences of supply chain sustainability in the United Arab Emirates. The results indicate that pressures enforced by champions and customers are positively related to supply chain sustainability. However, the relationship between government pressures and supply chain sustainability is insignificant. Moreover, the findings provide evidence that the impact of supply chain sustainability on the organizational sustainable performance is significantly positive. Supply managers can learn from these results in developing sustainable initiatives earlier along their supply chain through selecting and evaluating suppliers based on sustainability-related standards. In addition, environmental collaboration with customers and suppliers based on knowledge sharing and application may identify and reduce the total environmental impact.

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