Trust realisation in multi-domain collaborative environments

In the Internet-age, the geographical boundaries that have previously impinged upon inter-organisational collaborations have become decreasingly important. Of more importance for such collaborations is the notion and subsequent nature of trust - this is especially so in Grid-like environments where resources are both made available and subsequently accessed and used by remote users from a multitude of institutions with a variety of different privileges spanning across the collaborating resources. In this context, the ability to dynamically negotiate and subsequently enforce security policies driven by various levels of inter-organisational trust is essential. In this paper we present a dynamic trust negotiation (DTN) model and associated prototype implementation showing the benefits and limitations DTN incurs in supporting n-tier delegation hops needed for trust realisation in multi-domain collaborative environments

Semantic Security for E-Health: A Case Study in Enhanced Access Control

Data collection, access and usage are essential for many forms of collaborative research. E-Health represents one area with much to gain by sharing of data across organisational boundaries. In such contexts, security and access control are essential to protect the often complex, privacy and information governance concerns of associated stakeholders. In this paper we argue that semantic technologies have unique benefits for specification and enforcement of security policies that cross organisation boundaries. We illustrate this through a case study based around the International Niemann-Pick Disease (NPD) Registry (www.inpdr.org) - which typifies many current e-Health security processes and policies. We show how approaches based upon ontology-based policy specification overcome many of the current security challenges facing the development of such systems and enhance access control by leveraging existing security information associated with clinical collaborators

Dynamic trust negotiation for decentralised e-health collaborations

In the Internet-age, the geographical boundaries that have previously impinged upon inter-organisational collaborations have become decreasingly important. Of more importance for such collaborations is the notion and subsequent nature of security and trust - this is especially so in open collaborative environments like the Grid where resources can be both made available, subsequently accessed and used by remote users from a multitude of institutions with a variety of different privileges spanning across the collaboration. In this context, the ability to dynamically negotiate and subsequently enforce security policies driven by various levels of inter-organisational trust is essential. Numerous access control solutions exist today to address aspects of inter-organisational security. These include the use of centralised access control lists where all collaborating partners negotiate and agree on privileges required to access shared resources. Other solutions involve delegating aspects of access right management to trusted remote individuals in assigning privileges to their (remote) users. These solutions typically entail negotiations and delegations which are constrained by organisations, people and the static rules they impose. Such constraints often result in a lack of flexibility in what has been agreed; difficulties in reaching agreement, or once established, in subsequently maintaining these agreements. Furthermore, these solutions often reduce the autonomous capacity of collaborating organisations because of the need to satisfy collaborating partners demands. This can result in increased security risks or reducing the granularity of security policies. Underpinning this is the issue of trust. Specifically trust realisation between organisations, between individuals, and/or between entities or systems that are present in multi-domain authorities. Trust negotiation is one approach that allows and supports trust realisation. The thesis introduces a novel model called dynamic trust negotiation (DTN) that supports n-tier negotiation hops for trust realisation in multi-domain collaborative environments with specific focus on e-Health environments. DTN describes how trust pathways can be discovered and subsequently how remote security credentials can be mapped to local security credentials through trust contracts, thereby bridging the gap that makes decentralised security policies difficult to define and enforce. Furthermore, DTN shows how n-tier negotiation hops can limit the disclosure of access control policies and how semantic issues that exist with security attributes in decentralised environments can be reduced. The thesis presents the results from the application of DTN to various clinical trials and the implementation of DTN to Virtual Organisation for Trials of Epidemiological Studies (VOTES). The thesis concludes that DTN can address the issue of realising and establishing trust between systems or agents within the e-Health domain, such as the clinical trials domain

(Re)ordering and (dis)ordering of street trade:the case of Recife, Brazil

Informal urban street trade is a prevalent feature across the Global South where much of the production and/or buying and selling of goods and services is unregulated. For this reason, local authorities have historically seen it as backward, inefficient and detrimental to the development of urban areas and have thus developed formalisation programmes aimed to control and ultimately make it disappear. Critics argue that the design and implementation of these programmes can marginalise and disempower informal traders as it acts against the traders’ livelihoods and long-established practices they have developed for decades. This research speaks to these concerns and aims to investigate how informal urban street trade manages to continuously reproduce itself despite formalising efforts to make it vanish. The study follows a post-structuralist approach informed by post-development sensibilities (Escobar, 2011). The purpose is two-fold. First, to critically investigate the implications of imposed power-knowledge essentialism inherent to formalisation processes (Foucault, 1980). Second, to analyse the ways in which cultural and socioeconomic development is enacted through the daily assembling of informal urban street trade (Farías and Bender, 2012; McFarlane, 2011). The research offers a thick ethnographic inquiry, conducted over a one year-long period (2014-2015) in the urban centre of Recife, Northeast capital of Pernambuco state, Brazil. Recife is a particularly rich site to investigate these issues as informal urban street trade has historically been pervasive of its squares and streets and the municipally has in place a formalisation programme aimed to gather information about traders, license them and relocate them into purposefully-built facilities. The ethnographic inquiry focused on the practices, knowledges, materials and technologies associated with the daily work of both informal traders, selling on the streets, and governing officials implementing the formalisation programme, both on the streets and on the City Council office. Primary data collection was gathered through ethnographic observations and fieldnote diaries enriched with pictures and audio recordings of the day-to-day sensorial experience of informal urban street trade. This was enhanced with informal conversations as well as semi-structured and unstructured interviews with governing bodies’ officials, licenced and unlicensed street traders, formal shop owners, and a diversified set of urban citizens. The thesis highlights that formalisation, through the introduction of regulations, classification schemes and practices of classifying traders through an information system, seeks to establish and expand an individualistic developmentality among all actors. Through this, formalisation aims to shape and normalise their everyday practices to focus on the City Council’s agenda of rendering informal street trade as problematic and turning the solution of formalised trade not only unquestionable, but desirable by all. More problematically, the formalisation programme’s overdetermination of what a socioeconomic order is to be and its imposition of individualising subjectivities to assist in its implementation acts against the traders’ collective and community-based understanding of work and livelihoods which, contrary to the formalisation discourse, greatly benefit the cultural and socioeconomic development of these communities. This is achieved through the traders’ daily assembling of work, value and supply on the streets. The findings reveal that the collective organisation of traders’ work is strongly based on a ‘cooperative ethos’ that is not only efficient in taking advantage of and adapting to the challenging conditions of street markets, but also is key on the ongoing fostering and strengthening of the local community identity. The findings also show that traders, through their tacit knowledge of the best fits between products, services and sites, are key in shaping the valuation of both formal and informal enterprises as well as urban sites thus bolstering the local economy. Lastly, the findings also reveal that, through their interactions with formal and informal supply circuits, street traders are fundamental for the distribution and promotion of local artists and producers thus helping on the support and fostering of local culture. The main contribution of this research is it offers novel empirical and theoretical insights on the ways in which formalisation and informality are performed. It richly reveals the contested nature of development that is negotiated daily between the individualist developmentality imposed by formalisation and the communitarian- based development possibilities which are enacted through informal trading practices. These developmental possibilities are turned invisible by formalisation as classification enforces a strong reading of street trade which is ontologically distant and even contrary to the community-based values which make street trade not only resilient to formalising efforts but also adaptive to the challenging conditions and, more importantly, central to the cultural and socioeconomic development of these communities

Livestock, disease, trade and markets : policy choices for the livestock sector in Africa

For many years African livestock production was seen as a poor investment for development. Assumptions about low productivity, ‘backward’ management systems, lack of market orientation and poor growth potentials consigned the livestock sector to the sidelines. But after years of being ignored, livestock issues are beginning to be put back on Africa’s development agenda. Livestock are being recognised as essential assets for livelihoods; as key to moving out of poverty; as a way into lucrative markets; as a source of foreign exchange; as well as important cultural resources, social safety nets and means of saving. Given this renewed emphasis, this Working Paper asks: What are some of the underlying debates, assumptions and trade-offs? What competing perspectives on ways forward for African livestock development are being explicitly – and implicitly – discussed? The paper focuses on three interlocking themes – markets, trade and standards; service delivery and organisational arrangements; and science and technology priorities, examining both policy debates and field-level experiences from across Africa. The analysis suggests that, despite a common rhetorical commitment to poverty reduction, sustainable livelihoods and pro-poor policy, there are tensions within the development strategies being proposed. Today’s primary policy focus is on livestock for trade and export – relating to a general concern to ‘modernise’ the sector, and boost production, requiring new approaches to both livestock production and management and the delivery of animal health care and veterinary services. Potentially, the paper argues, this comes at the expense of more simple initiatives to support productivity, breeding and disease management. Keywords: livestock, science, policy, veterinary, livelihoods, animal health care, markets, trade, standard

City Data Plan: the conceptualisation of a policy instrument for data governance in smart cities

This paper presents the conceptualisation of the City Data Plan, a data governance policy instrument intended to connect the production and use of urban data in a comprehensive and evolutive long-term strategy aligned with city development goals. The concept of the City Data Plan had been elaborated by taking into account current issues related to privacy and manipulation of data in smart city. The methodological approach adopted to define the nature of a City Data Plan is grounded on the conceptual and empirical parallelism with corporate data governance plans and general urban plans, respectively aimed to regulate decision-making powers and actions on data in enterprise contexts, and the interests of local stakeholders in the access and use of urban resources. The result of this analytic process is the formulation of the outline of a City Data Plan as a data governance policy instrument to support the iterative negotiation between the instances of data producers and data users for instantiating shared smart city visions. The conceptualisation of the City Data Plan includes a description of the multi-stakeholder organisational structures for the city data governance, cooperation protocols and decision areas, responsibilities assignments, components of the plan and its implementation mechanisms