Experiments with a machine-centric approach to realise distributed emergent software systems

Modern distributed systems are exposed to constant changes in their operating environment, leading to high uncertainty. Self-adaptive and self-organising approaches have become a popular solution for runtime reactivity to this uncertainty. However, these approaches use predefined, expertly-crafted policies or models, constructed at design-time, to guide system (re)configuration. They are human-centric, making modelling or policy-writing difficult to scale to increasingly complex systems; and are inflexible in their ability to deal with the unexpected at runtime (e.g. conditions not captured in a policy). We argue for a machine-centric approach to this problem, in which the desired behaviour is autonomously learned and emerges at runtime from a large pool of small alternative components, as a continuous reaction to the observed behaviour of the software and the characteristics of its operating environment. We demonstrate our principles in the context of data-centre software, showing that our approach is able to autonomously coordinate a distributed infrastructure composed of emergent web servers and a load balancer. Our initial results validate our approach, showing autonomous convergence on an optimal configuration, and also highlight the open challenges in providing fully machine-led distributed emergent software systems

Theory-based Analyses of Interorganisational Standards for Self-organising, Adaptive Value Creation Networks

Today many enterprises find themselves in situations of forming new or integrating into existing value creation networks to strengthen their market position and to provide new innovative customer solutions to its customers. Due to their high complexity, effective and efficient value creation networks rely on self-organising and adaptive structures and processes. Information flows amongst business partners and the coordination of these flows by cooperation activities are major design parameters of such networks. Interorganisational standards (IOS) seek to ease information infrastructure design by providing a referential frame. However, practitioners finding themselves in situations of selecting specific standards and thereby deciding against others, so far lack sufficient theoretical guidance in this selection problem. This research informs the IOS selection problem by condensing insights from the body of knowledge from management cybernetics and coordination theory and identifying first requirements to a method guiding IOS choices

Changing patterns in the steering of the University in Italy: funding rules and doctoral programmes

The paper aim is to highlight the transformation of the state-university relationships in Italy, because of the introduction of the autonomy-accountability principles for the university government. The focus is on funding rules and procedures and doctoral programmes as examples of changes of the university steering. The analysis is carried out taking into account two different government theories, namely the New Public Management (NPM) and the Network-based governance system (NBG). The work is based both on the literature related to the steering of the Italian Universities, and on the Government’s acts (laws and related official documents). The paper is the first deliverable of the Project “The steering of Universities. A comparative research on the impact of new rules and actors on University governance” – SUN, developed within PRIME - Network of Excellence (VI EU Framework Program).Higher Education; Governance; Doctoral Programs; R&D Funding; NPM

Los comunes desde una perspectiva de los sistemas sociales críticos

This paper is an attempt to theorise the commons from a perspective that sets out for reconciling systemism with a critical stance. According to that the concept of the commons is not only descriptive but also normative.The commons are defined as the systemic effect of synergy in social systems. However, the more suppression and exploitation are ruling, the higher is the extent of exclusion of actors from self-organised generation and usage of the synergetic effect, that is, the higher the extent of enclosure of the commons. Actually, the trend towards the enclosure of the commons is all-embracing and besets every subsystem of society.The critical stance of that theoretical position manifests itself in the endorsement of the reclaiming of the commons as a step towards the implementation of a good society.This paper is an attempt to theorise the commons from a perspective that sets out for reconciling systemism with a critical stance. According to that the concept of the commons is not only descriptive but also normative.The commons are defined as the systemic effect of synergy in social systems. However, the more suppression and exploitation are ruling, the higher is the extent of exclusion of actors from self-organised generation and usage of the synergetic effect, that is, the higher the extent of enclosure of the commons. Actually, the trend towards the enclosure of the commons is all-embracing and besets every subsystem of society.The critical stance of that theoretical position manifests itself in the endorsement of the reclaiming of the commons as a step towards the implementation of a good society.Este artículo es un intento de teorizar los comunes desde una perspectiva que pretende reconciliar el systemism con una postura crítica. De acuerdo con esto, el concepto de los comunes no es solo descriptivo sino también normativo. Los comunes son definidos como el efecto sistémico de la sinergia en los sistemas sociales. Sin embargo, mientras mayor represión y explotación reinen, más amplio es el alcance de la exclusión de los actores por los efectos sinérgicos en cuanto a su uso y producción auto-organizada, es decir, mayor será la extensión del cercamiento de los comunes. De hecho, la tendencia hacia el cercamiento de los comunes es global y asedia a todos los subsistemas de la sociedad. La postura crítica de esa posición teorética se manifiesta por sí misma en el respaldo de las reivindicaciones de los comunes como un paso hacia la implementación de una buena sociedad

Energy efficient data collection and dissemination protocols in self-organised wireless sensor networks

Wireless sensor networks (WSNs) are used for event detection and data collection in a plethora of environmental monitoring applications. However a critical factor limits the extension of WSNs into new application areas: energy constraints. This thesis develops self-organising energy efficient data collection and dissemination protocols in order to support WSNs in event detection and data collection and thus extend the use of sensor-based networks to many new application areas. Firstly, a Dual Prediction and Probabilistic Scheduler (DPPS) is developed. DPPS uses a Dual Prediction Scheme combining compression and load balancing techniques in order to manage sensor usage more efficiently. DPPS was tested and evaluated through computer simulations and empirical experiments. Results showed that DPPS reduces energy consumption in WSNs by up to 35% while simultaneously maintaining data quality and satisfying a user specified accuracy constraint. Secondly, an Adaptive Detection-driven Ad hoc Medium Access Control (ADAMAC) protocol is developed. ADAMAC limits the Data Forwarding Interruption problem which causes increased end-to-end delay and energy consumption in multi-hop sensor networks. ADAMAC uses early warning alarms to dynamically adapt the sensing intervals and communication periods of a sensor according to the likelihood of any new events occurring. Results demonstrated that compared to previous protocols such as SMAC, ADAMAC dramatically reduces end-to-end delay while still limiting energy consumption during data collection and dissemination. The protocols developed in this thesis, DPPS and ADAMAC, effectively alleviate the energy constraints associated with WSNs and will support the extension of sensorbased networks to many more application areas than had hitherto been readily possible

Building institutions for health and health systems in contexts of rapid change

Many Asian countries are in the midst of multiple interconnected social, economic, demographic, technological, institutional and environmental transitions. These changes are having important impacts on health and well-being and on the capacity of health systems to respond to health-related problems. This paper focuses on the creation of institutions to overcome information asymmetry and encourage the provision of safe, effective and affordable health services in this context of complexity and rapid change. It presents a review of literature on different approaches to the analysis of the management of system development and institution-building. There is a general agreement that the outcome of an intervention depends a great deal on the way that a large number of agents respond. Their response is influenced by the institutional arrangements that mediate relationships between health sector actors and also by their understandings and expectations of how other actors will respond. The impact of a policy or specific intervention is difficult to predict and there is a substantial risk of unintended outcomes. This creates the need for an iterative learning approach in which widespread experimentation is encouraged, good and bad experiences are evaluated and policies are formulated on the basis of the lessons learned. This enables actors to learn their roles and responsibilities and the appropriate responses to new incentive structures. The paper concludes with an outline of the information needs of managers of health system change in societies in the midst of rapid development.ESR

Resilience: an all-encompassing solution to global problems? A biopolitical analysis of resilience in the policies of EC, FEMA, UNDP, USAID, WB, and WEF

This thesis examines the use of resilience in international policy-making. A concept that originally meant an ability of ecosystems to absorb disturbance has not only been welcomed in many disciplines outside ecology, but lately become popular in the policies of international organisations that claim resilience as a solution to various ‘global problems’ such as climate change, underdevelopment, or economic crises. The study contributes to the ongoing critical discussion on the governance effects of resilience. Here, the Foucauldian theory of biopolitics and the concept of governmentality are useful. Resilience now addresses human systems and communities with concepts from natural sciences, thus making it a biopolitical phenomenon. Specifically, the thesis asks how mainstreaming resilience affects the pursuit of agendas in six organisations: European Commission, Federal Emergency Management Agency, United Nations Development Programme, United States Agency for International Development, World Bank, and World Economic Forum. Using Foucauldian discourse analysis, the study is thematically divided into adaptive, entrepreneurial and governing aspects of resilience. Each part explicates how truth, power and subjectivity are constructed in the discourse. The analysis shows that contrary to the policy claims, resilience does not function as a solution but is constitutive of the problems it attempts to solve. The current policy discourse confirms pre-existing practices and power relations, and further problematizes issues on the agendas. The thesis confirms that the policies are trapped in a neoliberal biopolitics that has problematic implications for human subjectivity and political agency. It further concludes that if resilience is to have any practical relevance and positive effects, the policy discourse has to be changed, for which current critical accounts do not offer a plausible direction. Therefore, a distinction between resilience as a policy tool and social resilience is needed, whereby the use of resilience as a policy solution is reduced to disaster risk reduction and similar technical functions, and social resilience is recognised as a communal capacity that cannot be subject to policy regulation

Establishing a framework for dynamic risk management in 'intelligent' aero-engine control

The behaviour of control functions in safety critical software systems is typically bounded to prevent the occurrence of known system level hazards. These bounds are typically derived through safety analyses and can be implemented through the use of necessary design features. However, the unpredictability of real world problems can result in changes in the operating context that may invalidate the behavioural bounds themselves, for example, unexpected hazardous operating contexts as a result of failures or degradation. For highly complex problems it may be infeasible to determine the precise desired behavioural bounds of a function that addresses or minimises risk for hazardous operation cases prior to deployment. This paper presents an overview of the safety challenges associated with such a problem and how such problems might be addressed. A self-management framework is proposed that performs on-line risk management. The features of the framework are shown in context of employing intelligent adaptive controllers operating within complex and highly dynamic problem domains such as Gas-Turbine Aero Engine control. Safety assurance arguments enabled by the framework necessary for certification are also outlined

Delivering high reliability in maternity care: In situ simulation as a source of organisational resilience

© 2016 Elsevier Ltd The fields of resilience engineering and high reliability organising both seek to explain the key sources and characteristics of safety in organisations that operate under conditions of considerable complexity, variability and surprise. A key focus in both of these fields is explaining how organisations can use adaptive and flexible work processes to deliver safe and reliable services, and how organisations can draw on past events and new experiences to increase their capacity to handle disruptive and unexpected events. To explore these issues, this paper develops an analysis of the routine use of on-site or ‘in situ’ simulation of emergency events as part of a systematic approach to safety management in the healthcare setting of maternity care. This analysis identifies three core organising processes through which in situ simulation can act as a source of organisational safety: relational rehearsal, system structuring and practice elaboration. We use this analysis to examine the opportunities that exist to develop more integrated explanatory accounts of high reliability organising and resilience engineering, particularly exploring the tensions between organisational stability and change, proactive and reactive modes of organising, and organisational strength and weakness