A Multi-phase Approach for Improving Information Diffusion in Social Networks

For maximizing influence spread in a social network, given a certain budget on the number of seed nodes, we investigate the effects of selecting and activating the seed nodes in multiple phases. In particular, we formulate an appropriate objective function for two-phase influence maximization under the independent cascade model, investigate its properties, and propose algorithms for determining the seed nodes in the two phases. We also study the problem of determining an optimal budget-split and delay between the two phases.Comment: To appear in Proceedings of The 14th International Conference on Autonomous Agents & Multiagent Systems (AAMAS), 201

The societal embedding of sustainable Product-Service Systems: Looking for synergies between strategic design and transition studies

Copyright @ 2014 Greenleaf Publishing.Eco-efficient Product-Service System (PSS) innovations represent a promising approach to sustainability, but their implementation and diffusion is hindered by several cultural, corporate and regulative barriers. Hence, an important challenge is not only to conceive sustainable PSS concepts, but also to understand how to manage, support and orient the introduction and diffusion of these concepts. Building upon recent advances in the innovation studies field (in particular the contributions from transition studies) this chapter puts forward a conceptual framework for the introduction and scaling-up of eco-efficient PSSs. A key role is given to the implementation of socio-technical experiments: protected spaces where radical innovations can be tested, become more mature, and potentially challenge and change dominant socio-technical practices, habits and institutions. Starting from these considerations this chapter investigates the potential contribution that a strategic design approach can make to stimulating and supporting the societal embedding of eco-efficient PSS innovations. A new strategic design role thus emerges, a role in which the ideation and development of sustainable PSS concepts is coupled with the designing of appropriate transition paths to gradually incubate, introduce and diffuse these concepts. Starting from these considerations the chapter outlines and discusses the new design approach and capabilities required by strategic designers

Recent Advances in Graph Partitioning

We survey recent trends in practical algorithms for balanced graph partitioning together with applications and future research directions

Early Learning Innovation Fund Evaluation Final Report

This is a formative evaluation of the Hewlett Foundation's Early Learning Innovation Fund that began in 2011 as part of the Quality Education in Developing Countries (QEDC) initiative.  The Fund has four overarching objectives, which are to: promote promising approaches to improve children's learning; strengthen the capacity of organizations implementing those approaches; strengthen those organizations' networks and ownership; and grow 20 percent of implementing organizations into significant players in the education sector. The Fund's original design was to create a "pipeline" of innovative approaches to improve learning outcomes, with the assumption that donors and partners would adopt the most successful ones. A defining feature of the Fund was that it delivered assistance through two intermediary support organizations (ISOs), rather than providing funds directly to implementing organizations. Through an open solicitation process, the Hewlett Foundation selected Firelight Foundation and TrustAfrica to manage the Fund. Firelight Foundation, based in California, was founded in 1999 with a mission to channel resources to community-based organizations (CBOs) working to improve the lives of vulnerable children and families in Africa. It supports 12 implementing organizations in Tanzania for the Fund. TrustAfrica, based in Dakar, Senegal, is a convener that seeks to strengthen African-led initiatives addressing some of the continent's most difficult challenges. The Fund was its first experience working specifically with early learning and childhood development organizations. Under the Fund, it supported 16 such organizations: one in Mali and five each in Senegal, Uganda and Kenya. At the end of 2014, the Hewlett Foundation commissioned Management Systems International (MSI) to conduct a mid-term evaluation assessing the implementation of the Fund exploring the extent to which it achieved intended outcomes and any factors that had limited or enabled its achievements. It analyzed the support that the ISOs provided to their implementing organizations, with specific focus on monitoring and evaluation (M&E). The evaluation included an audit of the implementing organizations' M&E systems and a review of the feasibility of compiling data collected to support an impact evaluation. Finally, the Foundation and the ISOs hoped that this evaluation would reveal the most promising innovations and inform planning for Phase II of the Fund. The evaluation findings sought to inform the Hewlett Foundation and other donors interested in supporting intermediary grant-makers, early learning innovations and the expansion of innovations. TrustAfrica and Firelight Foundation provided input to the evaluation's scope of work. Mid-term evaluation reports for each ISO provided findings about their management of the Fund's Phase I and recommendations for Phase II. This final evaluation report will inform donors, ISOs and other implementing organizations about the best approaches to support promising early learning innovations and their expansion. The full report outlines findings common across both ISOs' experience and includes recommendations in four key areas: adequate time; appropriate capacity building; advocacy and scaling up; and evaluating and documenting innovations. Overall, both Firelight Foundation and TrustAfrica supported a number of effective innovations working through committed and largely competent implementing organizations. The program's open-ended nature avoided being prescriptive in its approach, but based on the lessons learned in this evaluation and the broader literature, the Hewlett Foundation and other donors could have offered more guidance to ISOs to avoid the need to continually relearn some lessons. For example, over the evaluation period, it became increasingly evident that the current context demands more focused advance planning to measure impact on beneficiaries and other stakeholders and a more concrete approach to promoting and resourcing potential scale-up. The main findings from the evaluation and recommendations are summarized here

Internet Governance : exploring the development link

This paper seeks to explore the issues of Internet governance from a development perspective. The WSIS process and the report of the UN Working group on Internet Governance provide an initial framework within which to develop the issues. These issues not only concern the equitable distribution of Internet resources and the ways in which a secure and reliable function of the Internet can be achieved, but also include issues of multi-lingualism and local content as well as the institutional setting of Internet governance mechanisms and participation. The paper observers that realising the contribution of the Internet to development goals requires a shift in policy focus away from supply side initiatives in the telecommunications sector to more co-ordinated approaches

How the design of socio-technical experiments can enable radical changes for sustainability

Sustainability requires radical innovations, but their introduction and diffusion usually encounter the opposition of existing socio-technical regimes. An important challenge is, therefore, to understand how to catalyse and support the process of transitioning towards these innovations. Building upon insights from transition studies (in particular the concepts of Strategic Niche Management and Transition Management), and through an action research project (aimed at designing, introducing and diffusing a sustainable mobility system in the suburban areas of Cape Town), the paper investigates the role of design in triggering and orienting societal transformations. A key role is given to the implementation of socio-technical experiments. A new socio-technical system design role emerges: a role in which the ideation and development of sustainable innovation concepts is coupled with the designing of appropriate transition paths to gradually incubate, introduce and diffuse these concepts

The role of social interaction in farmers' climate adaptation choice

Adaptation to climate change might not always occur, with potentially\ud catastrophic results. Success depends on coordinated actions at both\ud governmental and individual levels (public and private adaptation). Even for a “wet” country like the Netherlands, climate change projections show that the frequency and severity of droughts are likely to increase. Freshwater is an important factor for agricultural production. A deficit causes damage to crop production and consequently to a loss of income. Adaptation is the key to decrease farmers’ vulnerability at the micro level and the sector’s vulnerability at the macro level. Individual adaptation decision-making is determined by the behavior of economic agents and social interaction among them. This can be best studied with agentbased modelling. Given the uncertainty about future weather conditions and the costs and effectiveness of adaptation strategies, a farmer in the model uses a cognitive process (or heuristic) to make adaptation decisions. In this process, he can rely on his experiences and on information from interactions within his social network. Interaction leads to the spread of information and knowledge that causes learning. Learning changes the conditions for individual adaptation decisionmaking. All these interactions cause emergent phenomena: the diffusion of adaptation strategies and a change of drought vulnerability of the agricultural sector. In this paper, we present a conceptual model and the first implementation of an agent-based model. The aim is to study the role of interaction in a farmer’s social network on adaptation decisions and on the diffusion of adaptation strategies\ud and vulnerability of the agricultural sector. Micro-level survey data will be used to parameterize agents’ behavioral and interaction rules at a later stage. This knowledge is necessary for the successful design of public adaptation strategies, since governmental adaptation actions need to be fine-tuned to private adaptation behavior