LeNS_AFRICA. An African learning network on sustainability for the development and diffusion of teaching materials and tools on design for sustainability in an open-source and copy left ethos

Copyright @ 2009 CARMAIt is a shared opinion that sustainable development requires a system discontinuity, meaning that radical changes in the way we produce and consume are needed. Within this framework there is an emerging understanding that an important contribution to this change can be directly linked to decisions taken in the design phase. For this reason design schools have therefore to be able to provide design students with a broad knowledge and effective Design for Sustainability tools, in order to enable a new generation of designers in playing an active role in reorienting our consumption and production patterns. Under this perspective, there is a pressing need of mechanisms that act at the education level, enabling design educators (and researchers) to share knowledge in this field. Along this direction this paper presents the intermediate results of the Learning Network on Sustainability (LeNS) project, an Asian-European multi-polar network for curricula development on Design for Sustainability focused on (Product-Service) System innovation, financed by the European Commission under the Asia-Links programme2. LeNS is a mechanism to develop and diffuse system design for sustainability in design schools with a transcultural perspective. The main output of the project will be the Open Learning E-Package (OLEP), an open web platform that allows a decentralised and collaborative production and fruition of knowledge produced as learning subsidies. It can be described as a modular e-package of teaching materials (texts, slide shows, audio, video, etc) and tools for designers, that design educators (but also students and professionals as designers, entrepreneurs and interested persons/ institutions) worldwide will be able to download (free of charge), modify, remix and reuse (copy left). Apart from the contents, the same LeNS web platform is realised in an open-source and copy left ethos, allowing its download and reconfiguration in relation to specific needs, area of interest and interested partners. Within this perspective one of this hypothesis is about the setting up of an African Learning Network on Sustainability, which, taking in consideration the local needs, interests and opportunities, could represent a significant enabling platform capable to sensitise, support and empower a new generation of African design educators, designers and entrepreneurs to reach design practice throughout an open collaborative learning approach

Crime reduction through design: insights from ecodesign

The recognition for humankind to act in more sustainable ways has evolved new theory and practice within design. This new type of design is commonly described as ecodesign. This paper describes the different approaches to ecodesign and places them within a framework illustrating a broad range of initiatives. Approaches to crime are explored in relation to the ecodesign framework and conceptual links are made between these two fields of study. To ascertain how such initiatives may inform design and development in decreasing the number of crime and disorder events, an overview of ecodesign policies, tools and drivers is presented, and the transferability of these discussed

Product line architecture recovery with outlier filtering in software families: the Apo-Games case study

Software product line (SPL) approach has been widely adopted to achieve systematic reuse in families of software products. Despite its benefits, developing an SPL from scratch requires high up-front investment. Because of that, organizations commonly create product variants with opportunistic reuse approaches (e.g., copy-and-paste or clone-and-own). However, maintenance and evolution of a large number of product variants is a challenging task. In this context, a family of products developed opportunistically is a good starting point to adopt SPLs, known as extractive approach for SPL adoption. One of the initial phases of the extractive approach is the recovery and definition of a product line architecture (PLA) based on existing software variants, to support variant derivation and also to allow the customization according to customers’ needs. The problem of defining a PLA from existing system variants is that some variants can become highly unrelated to their predecessors, known as outlier variants. The inclusion of outlier variants in the PLA recovery leads to additional effort and noise in the common structure and complicates architectural decisions. In this work, we present an automatic approach to identify and filter outlier variants during the recovery and definition of PLAs. Our approach identifies the minimum subset of cross-product architectural information for an effective PLA recovery. To evaluate our approach, we focus on real-world variants of the Apo-Games family. We recover a PLA taking as input 34 Apo-Game variants developed by using opportunistic reuse. The results provided evidence that our automatic approach is able to identify and filter outlier variants, allowing to eliminate exclusive packages and classes without removing the whole variant. We consider that the recovered PLA can help domain experts to take informed decisions to support SPL adoption.This research was partially funded by INES 2.0; CNPq grants 465614/2014-0 and 408356/2018-9; and FAPESB grants JCB0060/2016 and BOL2443/201

Design issues for agent-based resource locator systems

While knowledge is viewed by many as an asset, it is often difficult to locate particularitems within a large electronic corpus. This paper presents an agent based framework for the location of resources to resolve a specific query, and considers the associated design issue. Aspects of the work presented complements current research into both expertise finders and recommender systems. The essential issues for the proposed design are scalability, together ith the ability to learn and adapt to changing resources. As knowledge is often implicit within electronic resources, and therefore difficult to locate, we have proposed the use of ontologies, to extract the semantics and infer meaning to obtain the results required. We explore the use of communities of practice, applying ontology-based networks, and e-mail message exchanges to aid the resource discovery process

Understanding the Impact of Collaboration Software on Product Design and Development

Prior research suggests that supply chain collaboration has enabled companies to compete more efficiently in a global economy. We investigate a class of collaboration software for product design and development called collaborative product commerce (CPC). Drawing upon prior research in media richness theory and organizational science, we develop a theoretical framework to study the impact of CPC on product development. Based on data collected from 71 firms, we test our research hypotheses on the impact of CPC on product design quality, design cycle time and development cost. We find that CPC implementation is associated with greater collaboration among product design teams which, in turn, have a significant positive impact on product quality and a reduction in cycle time and product development cost. Further analyses reveals that CPC implementation is associated with substantial cost savings that can be attributed to improvements in product design quality, design turnaround time, greater design reuse, and lower product design documentation and rework costs

Combining Spot and Futures Markets: A Hybrid Market Approach to Dynamic Spectrum Access

Dynamic spectrum access is a new paradigm of secondary spectrum utilization and sharing. It allows unlicensed secondary users (SUs) to exploit opportunistically the under-utilized licensed spectrum. Market mechanism is a widely-used promising means to regulate the consuming behaviours of users and, hence, achieves the efficient allocation and consumption of limited resources. In this paper, we propose and study a hybrid secondary spectrum market consisting of both the futures market and the spot market, in which SUs (buyers) purchase under-utilized licensed spectrum from a spectrum regulator, either through predefined contracts via the futures market, or through spot transactions via the spot market. We focus on the optimal spectrum allocation among SUs in an exogenous hybrid market that maximizes the secondary spectrum utilization efficiency. The problem is challenging due to the stochasticity and asymmetry of network information. To solve this problem, we first derive an off-line optimal allocation policy that maximizes the ex-ante expected spectrum utilization efficiency based on the stochastic distribution of network information. We then propose an on-line VickreyCClarkeCGroves (VCG) auction that determines the real-time allocation and pricing of every spectrum based on the realized network information and the pre-derived off-line policy. We further show that with the spatial frequency reuse, the proposed VCG auction is NP-hard; hence, it is not suitable for on-line implementation, especially in a large-scale market. To this end, we propose a heuristics approach based on an on-line VCG-like mechanism with polynomial-time complexity, and further characterize the corresponding performance loss bound analytically. We finally provide extensive numerical results to evaluate the performance of the proposed solutions.Comment: This manuscript is the complete technical report for the journal version published in INFORMS Operations Researc

Westwood Multimodal Transportation Plan

Westwood is experiencing an industrial regeneration that will change the way the area is utilized by the surrounding communities. To be proactive, Henrico County is planning for the future by creating an overlay zoning district and striving for a multimodal environment to ensure the area grows in a sustainable manner. This plan evaluates the study area, retrieves community engagement, and makes recommendations on streetscape design and public transit improvements to create a multimodal Westwood. Study area observations provided evidence that the streets in Westwood need to be redesigned to accommodate more for pedestrians and cyclists. Community outreach in the form of a survey was conducted to gather input on how the streetscape should be designed and what elements of the study area need the most attention. Results of the surveys and observations were analyzed and used to build the recommendations made for Westwood. Various types of funding options are presented to implement this plan. Sustainable, connected, and integrated transportation is essential to success and livability of the fast-growing study area. The plan aims to supply the knowledge needed to create a livable and thriving Westwood