Remanufacturing and product design: designing for the 7th generation

The following is taken directly from the research report. This report investigates Design for Remanufacture in terms of both detailed product design and the business context in which Design for Remanufacture may operate. Key Study Objectives • To understand the link between design and remanufacture • To understand how Design for Remanufacture can lead to increased innovation and Sustainable Development (SD) • To identify proactive strategies to further Design for Remanufactur

Skills and capabilities for a sustainable and circular economy: The changing role of design

This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recordImplementing practices for a circular economy transforms the way companies do business, notably in the manufacturing industry. However, a circular economy requires a transformation of both production and consumption systems; the standard approach for creation, fabrication, and commerce of products is challenged. Authors repeatedly call for the development of new proficiencies to attend to system transformations, but these so far have not been described for design and engineering. Given that the design of a product directly influences the way a value chain will be managed, building circular, globally sustainable value chains inevitably signifies a fundamental change in the practice of design. Comprehensive analyses were conducted on case studies from a variety of multinational enterprises that are transforming their product strategies for climate change. Changes in design processes were identified, revealing a growing necessity for industry to employ new proficiencies that support closure of material loops. This paper contributes to existing literature by depicting successful practices being implemented in industry. A variety of new capabilities are key to design for a sustainable future; these range from deeper knowledge of material composition to rich understanding of social behaviour. Resulting from this research, learning goals are proposed to serve as guidance for manufacturing companies seeking to tackle climate change. Conclusions aim to encourage researchers and academics to respond to emerging needs by re-thinking education in design and engineering.Mexican National Council of Science and Technology (CONACYT

Skills and capabilities for a sustainable and circular economy: The changing role of design

Implementing practices for a circular economy transforms the way companies do business, notably in the manufacturing industry. However, a circular economy requires a transformation of both production and consumption systems; the standard approach for creation, fabrication, and commerce of products is challenged. Authors repeatedly call for the development of new proficiencies to attend to system transformations, but these so far have not been described for design and engineering. Given that the design of a product directly influences the way a value chain will be managed, building circular, globally sustainable value chains inevitably signifies a fundamental change in the practice of design. Comprehensive analyses were conducted on case studies from a variety of multinational enterprises that are transforming their product strategies for climate change. Changes in design processes were identified, revealing a growing necessity for industry to employ new proficiencies that support closure of material loops. This paper contributes to existing literature by depicting successful practices being implemented in industry. A variety of new capabilities are key to design for a sustainable future; these range from deeper knowledge of material composition to rich understanding of social behaviour. Resulting from this research, learning goals are proposed to serve as guidance for manufacturing companies seeking to tackle climate change. Conclusions aim to encourage researchers and academics to respond to emerging needs by re-thinking education in design and engineering

Cascade Use and the Management of Product Lifecycles

This paper explores the challenges related to the End-Of-Life phase of products and circular systems of reuse and recycling within the commonly established frameworks of product lifecycles. Typically, Original Equipment Manufacturer-centric supply chain perspectives neglect the complexity at the End-Of-Life where many third-parties are involved in reuse and recycling activities. Based on a review of product lifecycle and related recycling literature, this study proposes the application of ‘cascades’, a term originally coined within the biomass domain. We propose and subsequently apply the ‘cascade use methodology’ and identify additional and value-adding End-Of-Life solutions for products and materials. The adoption of cascade utilization into product lifecycles is analyzed and critically discussed using case studies from independent remanufacturing and tire recycling, focusing on the End-Of-Life while excluding business models as renting or sharing. Although theoretically feasible, we argue that the practical adoption of ‘cascade use’ deserves more attention from researchers and practitioners in order to become an integral part of the comprehensive management of product lifecycles

Diffusion of Worth Mapping: The worth of resource functions

This workshop paper uses a resource function vocabulary from the Working to Choose framework to analyse diffusion of the Worth Maps approach across several application domains. It explores how a resource function vocabulary can indicate aspects of design approaches and their use that favour successful diffusion

The Transitivity of Trust Problem in the Interaction of Android Applications

Mobile phones have developed into complex platforms with large numbers of installed applications and a wide range of sensitive data. Application security policies limit the permissions of each installed application. As applications may interact, restricting single applications may create a false sense of security for the end users while data may still leave the mobile phone through other applications. Instead, the information flow needs to be policed for the composite system of applications in a transparent and usable manner. In this paper, we propose to employ static analysis based on the software architecture and focused data flow analysis to scalably detect information flows between components. Specifically, we aim to reveal transitivity of trust problems in multi-component mobile platforms. We demonstrate the feasibility of our approach with Android applications, although the generalization of the analysis to similar composition-based architectures, such as Service-oriented Architecture, can also be explored in the future

Analyzing Android applications for specifications and bugs

Android has become one of the leader operating systems for smartphones. Moreover, Android has a big community of developers with over 696500 applications on its market. However, given the complexity of the system, bugs are very common on Android applications--such as security vulnerabilities and energy bugs. Normally Android applications are written using the Java programming language. In contrast to most Java applications, Android applications does not have a single entry point (main function). In addition, these applications can use some system calls and receive events from external entities (such as the user) that affect how their control flows. Therefore, a model of the Android system must be defined in order to understand the behavior of Android applications and define how their control flows. In this thesis, two approaches to define the behavior of Android applications are studied. The first approach is an intra-component analysis that take take in account just the lifecycle of the main components in Android to define control flow of the applications. This approach is evaluated applying a specification miner for energy related specifications on 12 applications from the Android market. We were able to mine 91 specifications on all the applications and 41 of them were validated. For 50% of the applications analyzed, the analysis had less than 40% of false positives specifications. However, for the rest of the applications, the interaction between components was a important factor that increased the false positives. Therefore, the second approach is an inter-component approach that takes in account both, the lifecycle of components and interaction between components to define the control flow of Android applications. We evaluate the approach checking the percentage of code coverage on 8 applications from the Google market. The results are promising with an average coverage of 67%. In addition, we were able to identify bugs related to violations of constraints regarding intecomponent interactions

Understanding new venture market application search processes: A propositional model.

Technology-based ventures are confronted with complex decisions on how to apply their technology platform in highly uncertain and ambiguous market environments. Based on four case studies, a dynamic decision model is developed in which we highlight the similarities between the search and learning processes in venture development contexts and in new product development contexts. This entrepreneurial search and learning process is understood as consisting of sequences of episodes – characterized by uncertainty and ambiguity - and scripts – i.e. approaches to market application search. The model implies that a venture's adaptability - i.e. its ability to move efficiently and effectively between these episodes and their related scripts - influences its survival.Case studies; Decision; Decisions; Learning; Market; Model; Processes; Product; Product development; Research; Sequences; Similarity; Studies; Technology; Uncertainty;

Towards Mobile Twin Peaks for App Development

Requirements of mobile apps are often hard to elicit from massive numbers of users, although it is important for the solution architecture to meet them. Mobile Twin Peaks approach is proposed as a process of developing apps concurrently and iteratively that incorporates bidirectional communications within a mobile app. The communications allow both requirements engineers and software architects to reach a consensus on functionalities and quality constraints and to adapt architectural design decisions appropriately. To recommend architectural design decisions to the developers, we aim to obtain architecture- critical requirements from a set of general apps by combining, for example, analytics, ethnographic study, and information retrieval. We argue that the effectiveness of these techniques could be evaluated by experimental case studies and by engaging with industry partners to perform action research