Lightweight Blockchain Framework for Location-aware Peer-to-Peer Energy Trading

Peer-to-Peer (P2P) energy trading can facilitate integration of a large number of small-scale producers and consumers into energy markets. Decentralized management of these new market participants is challenging in terms of market settlement, participant reputation and consideration of grid constraints. This paper proposes a blockchain-enabled framework for P2P energy trading among producer and consumer agents in a smart grid. A fully decentralized market settlement mechanism is designed, which does not rely on a centralized entity to settle the market and encourages producers and consumers to negotiate on energy trading with their nearby agents truthfully. To this end, the electrical distance of agents is considered in the pricing mechanism to encourage agents to trade with their neighboring agents. In addition, a reputation factor is considered for each agent, reflecting its past performance in delivering the committed energy. Before starting the negotiation, agents select their trading partners based on their preferences over the reputation and proximity of the trading partners. An Anonymous Proof of Location (A-PoL) algorithm is proposed that allows agents to prove their location without revealing their real identity. The practicality of the proposed framework is illustrated through several case studies, and its security and privacy are analyzed in detail

Structural Holes, Innovation and the Distribution of Ideas

We model knowledge diffusion in a population of agents situated on a network, interacting only over direct ties. Some agents are by nature traders, others are by nature "givers": traders demand a quid pro quo for information transfer; givers do not. We are interested in efficiency of diffusion and explore the interplay between the structure of the population (proportion of traders), the network structure (clustering, path length and degree distribution), and the scarcity of knowledge. We find that at the global level, trading (as opposed to giving) reduces efficiency. At the individual level, highly connected agents do well when knowledge is scarce, agents in clustered neighbourhoods do well when it is abundant. The latter finding is connected to the debate on structural holes and social capital.Innovation, Diffusion of Innovations, Knowledge, Information, Networks

The spatial dimensions of innovation

The paper discusseses the spatial dimensions of innovation in Polish manufacturing companies. The conceptual framework of the paper is an understanding of social networks as a potential resource of the company, whether they are internal or external. Whether the company benefits from the potential resources attached to the network depends on the capabilities characterising the firm in terms of qualifications, organisational characteristics and attitude towards employees and towards other firms. This again is not only determined by personal characteristics of the management and staff, but also by the common perceptions, and the institutional infrastructure prevailing in the (local) society. In Poland the latter is closely connected with the process of transition since 1990. The paper reports from a study among Polish manufacturing companies. It categorises the types of innovation prevailing in the companies and detects the role of networks in the innovation process of the companies. To what extend do the companies draw on external networks, on what points of the innovation process are the networks involved, what kind of networks are involved, and not least, what are the spatial characteristics of the networks (local, national international). Finally how can the network strategy of the companies be explained? What factors seem to determine an active involvement of networks and what other factors seem to explain a self-sufficient strategy of innovation? What is the spatial extension of the networks, and are there systematic differences in the spatial extension of the networks? Does the transitional situation of the Polish society seem to favour certain strategies of innovation?

Emerging Artificial Societies Through Learning

The NewTies project is implementing a simulation in which societies of agents are expected to de-velop autonomously as a result of individual, population and social learning. These societies are expected to be able to solve environmental challenges by acting collectively. The challenges are in-tended to be analogous to those faced by early, simple, small-scale human societies. This report on work in progress outlines the major features of the system as it is currently conceived within the project, including the design of the agents, the environment, the mechanism for the evolution of language and the peer-to-peer infrastructure on which the simulation runs.Artificial Societies, Evolution of Language, Decision Trees, Peer-To-Peer Networks, Social Learning

Optimal Parochialism: The Dynamics of Trust and Exclusion in Networks

Networks such as ethnic credit associations, close-knit residential neighborhoods, 'old boy' networks, and ethnically linked businesses play an important role in economic life but have been little studied by economists. These networks are often supported by cultural distinctions between insiders and outsiders and engage in exclusionary practices which we call parochialism. We provide an economic analysis of parochial networks in which the losses incurred by not trading with outsiders are offset by an enhanced ability to enforce informal contracts by fostering trust among insiders. We first model one-shot social interactions among self-regarding agents, demonstrating that trust (i.e., cooperating without using information about one's trading partner) is a best response in a mixed-strategy Nash equilibrium if the quality of information about one's partner is sufficiently high. We show that since larger networks have lower quality information about specific individuals and greater trading opportunities, there may be an optimal (payoff-maximizing) network size. We then model the growth and decline of networks, as well as their equilibrium size and number. We show that in the absence of parochialism, networks may not exist, and the appropriate level of parochialism may implement an optimal network size. Finally, we explore the welfare implications and reasons for the evolutionary success of exclusion on parochial and other grounds.

Modeling social information skills

In a modern economy, the most important resource consists in\ud human talent: competent, knowledgeable people. Locating the right person for\ud the task is often a prerequisite to complex problem-solving, and experienced\ud professionals possess the social skills required to find appropriate human\ud expertise. These skills can be reproduced more and more with specific\ud computer software, an approach defining the new field of social information\ud retrieval. We will analyze the social skills involved and show how to model\ud them on computer. Current methods will be described, notably information\ud retrieval techniques and social network theory. A generic architecture and its\ud functions will be outlined and compared with recent work. We will try in this\ud way to estimate the perspectives of this recent domain

Web Based Organizing and the Management of Human Resources

The paper focuses on the consequences of web-based business-to-business transactions in medium and large old economy companies in particular and discusses the implications for HRM and HR professionals. Medium and large old economy companies can be involved in transactions within the new economy in different ways. First of all the paper gives an overview of the striking characteristics that distinguish web-based transactions from more traditional transactions. The paper continues with an overview of the different ways in which old economy companies are attempting to integrate elements of web-based organizing into their current business and the implications of it for human resources management. Three different ways of integration are distinguished:-Seeing the Net as an extension of normal market channels for buying and selling.-Using the Net to expand and improve current co-makership relationships amongst key suppliers (section 4).-Totally re-thinking business models before deciding on e-commerce strategy and practice, which implies desegregation and organizational revolution. Each of these areas will be highlighted and possible implications for human resources management and HR managers considered.human resource management;business to business transactions;human resource managers;web-based organizing

Evaluating case studies of community-oriented integrated care.

This paper summarises a ten-year conversation within London Journal of Primary Care about the nature of community-oriented integrated care (COIC) and how to develop and evaluate it. COIC means integration of efforts for combined disease-treatment and health-enhancement at local, community level. COIC is similar to the World Health Organisation concept of a Community-Based Coordinating Hub - both require a local geographic area where different organisations align their activities for whole system integration and develop local communities for health. COIC is a necessary part of an integrated system for health and care because it enables multiple insights into 'wicked problems', and multiple services to integrate their activities for people with complex conditions, at the same time helping everyone to collaborate for the health of the local population. The conversation concludes seven aspects of COIC that warrant further attention