How Critical Are the Early Life-cycle Stages in the Population Ecology of Cycads? A Case Study with Dioon merolae in Southeastern Mexico

2012 ◽  
Author(s):  
Juan C. Flores-Vázquez ◽  
Teresa Valverde ◽  
José L. Lucas-González
Keyword(s):  
Life Cycle ◽  
Population Ecology ◽  
Early Life ◽  
Life Cycle Stages

scholarly journals A framework to assess circularity across product-life cycle stages – A case study

Procedia CIRP ◽  
2021 ◽  
Vol 98 ◽  
pp. 442-447
Author(s):  
Vimal K.E.K ◽  
Jayakrishna Kandasamy ◽  
Vedant Gite
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Product Life ◽  
Life Cycle Stages

Mitigating the Environmental Impact of Smartphones with Device Reuse

2012 ◽  
pp. 252-282 ◽  
Author(s):  
Xun Li ◽  
Pablo Ortiz ◽  
Brandon Kuczenski ◽  
Diana Franklin ◽  
Frederic T. Chong
Keyword(s):  
Information Technology ◽  
Life Cycle ◽  
Quantitative Analysis ◽  
Environmental Impact ◽  
Energy Materials ◽  
Societal Benefit ◽  
Life Cycle Stages ◽  
Elementary School Education ◽  
Manufacturing Stage

The rapid growth of information technology has not only brought substantial economic and societal benefit but also led to an unsustainable disposable model in which mobile devices are replaced in a matter of months. The environmental impact of this stream of handsets in terms of manufacturing energy, materials, and disposal costs is alarming. This chapter aims at raising today’s environmental issues of the increasing smartphone market, as well as providing a quantitative analysis on the environmental impact of different life-cycle stages of the smartphones, including the manufacturing stage, using stage, and recycling. To achieve sustainable computing and best utilize the energy consumed during manufacturing the large number of devices, this chapter demonstrates the methodology and techniques towards reusing smartphones by presenting a case study on reusing smartphones for elementary school education.

scholarly journals Integration of Energy Oriented Manufacturing Simulation into the Life Cycle Evaluation of Lightweight Body Parts

2022 ◽  
Author(s):  
Antal Dér ◽  
Alexander Kaluza ◽  
Lars Reimer ◽  
Christoph Herrmann ◽  
Sebastian Thiede
Keyword(s):  
Life Cycle ◽  
Process Models ◽  
Chain Model ◽  
Body Parts ◽  
Evaluation Approach ◽  
Life Cycle Stages ◽  
Fiber Sheet ◽  
Energy And Material Flows ◽  
Manufacturing Technologies

AbstractRecent years introduced process and material innovations in the design and manufacturing of lightweight body parts for larger scale manufacturing. However, lightweight materials and new manufacturing technologies often carry a higher environmental burden in earlier life cycle stages. The prospective life cycle evaluation of lightweight body parts remains to this day a challenging task. Yet, a functioning evaluation approach in early design stages is the prerequisite for integrating assessment results in engineering processes and thus allowing for a life cycle oriented decision making. The current paper aims to contribute to the goal of a prospective life cycle evaluation of fiber-reinforced lightweight body parts by improving models that enable to predict energy and material flows in the manufacturing stage. To this end, a modeling and simulation approach has been developed that integrates bottom-up process models into a process chain model. The approach is exemplarily applied on a case study of a door concept. In particular, the energy intensity of compression molding of glass fiber and carbon fiber sheet molding compounds has been analyzed and compared over the life cycle with a steel reference part.

scholarly journals Integrating BIM-Based LCA and Building Sustainability Assessment

2020 ◽  
Vol 12 (18) ◽  
pp. 7468
Author(s):  
José Pedro Carvalho ◽  
Ismael Alecrim ◽  
Luís Bragança ◽  
Ricardo Mateus
Keyword(s):  
Life Cycle ◽  
Data Storage ◽  
Building Materials ◽  
Sustainability Assessment ◽  
Building Information Modelling ◽  
Sustainability Criteria ◽  
Sustainability Analysis ◽  
Life Cycle Stages ◽  
Building Information

With the increasing concerns about building environmental impacts, building information modelling (BIM) has been used to perform different kinds of sustainability analysis. Among the most popular are the life cycle assessment (LCA) and building sustainability assessment (BSA). However, the integration of BIM-based LCA in BSA methods has not been adequately explored yet. This study addresses the relation between LCA and BSA within the BIM context for the Portuguese context. By performing an LCA for a Portuguese case study, a set of sustainability criteria from SBTool were simultaneous assessed during the process. The possibility of integrating BIM-based LCA into BSA methods can include more life cycle stages in the sustainability assessment and allow for normalising and producing more comparable results. BIM automates and connects different stages of the design process and provides information for multi-disciplinary data storage. However, there are still some constraints, such as different BSA/LCA databases and the necessity to manually introduce the embodied life cycle impacts of building materials. The scope of the BSA analysis can be expanded by integrating a complete LCA and be fostered by the support of BIM, effectively improving building sustainability according to local standards.

scholarly journals Continuously revised assurance cases with stakeholders’ cross-validation: a DEOS experience

2016 ◽  
Vol 2 ◽  
pp. e101 ◽  
Author(s):  
Kimio Kuramitsu
Keyword(s):  
Life Cycle ◽  
It Services ◽  
Software Life Cycle ◽  
Multiple Stakeholders ◽  
Life Cycle Stages ◽  
Software Changes ◽  
Assurance Cases ◽  
System Life

Recently, assurance cases have received much attention in the field of software-based computer systems and IT services. However, software changes very often, and there are no strong regulations for software. These facts are two main challenges to be addressed in the development of software assurance cases. We propose a method of developing assurance cases by means of continuous revision at every stage of the system life cycle, including in operation and service recovery in failure cases. Instead of a regulator, dependability arguments are validated by multiple stakeholders competing with each other. This paper reported our experience with the proposed method in the case of Aspen education service. The case study demonstrates that continuous revisions enable stakeholders to share dependability problems across software life cycle stages, which will lead to the long-term improvement of service dependability.

scholarly journals Accounting for imperfect detection in species with sessile life cycle stages: a case study of bumble bee nests

2019 ◽  
Vol 23 (5-6) ◽  
pp. 945-955 ◽  
Author(s):  
David T. Iles ◽  
Genevieve Pugesek ◽  
Natalie Z. Kerr ◽  
Nicholas N. Dorian ◽  
Elizabeth E. Crone
Keyword(s):  
Life Cycle ◽  
Bumble Bee ◽  
Imperfect Detection ◽  
Life Cycle Stages

Climate change in forest ecosystems: A field experiment addressing the effects of raising temperature and reduced rainfall on early life cycle stages of oaks

2018 ◽  
Vol 92 ◽  
pp. 35-43 ◽  
Author(s):  
Cynthia L. Pérez-Ruiz ◽  
Ernesto I. Badano ◽  
Juan P. Rodas-Ortiz ◽  
Pablo Delgado-Sánchez ◽  
Joel Flores ◽  
...  
Keyword(s):  
Climate Change ◽  
Life Cycle ◽  
Field Experiment ◽  
Early Life ◽  
Forest Ecosystems ◽  
Life Cycle Stages

Information System Life Cycle

2014 ◽  
pp. 276-293
Keyword(s):  
Information System ◽  
Life Cycle ◽  
Single Step ◽  
Design Development ◽  
Whole Process ◽  
Life Cycle Stages ◽  
Is Management ◽  
System Life ◽  
Is Design

The main purpose of the IVO framework refers to study and management of IS. This chapter discusses the IS issues that are standard topics in study of IS (Management Information Systems and similar areas). These are IS design/development, adoption, evaluation, management, and use. These IS life cycle stages interact with IVO aspects, such as infopolitics and infoculture. Understanding this whole process rather than just a single step is necessary for effective research and management. An extensive case study is discussed to demonstrate these ideas. It is also shown how the IVO perspective can deepen teaching case studies.

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