This article interrogates the idea of leadership in a decentralized organization, using Extinction Rebellion (XR) as case study. Through close observation this environmental movement, we problematize notion leaderless organizations and question whether hierarchy- power-free ‘decentralized organization’ is fantasmatic endeavour. Psychoanalytic analysis discussions between XR members following tw...

As deployed Grids increase from 10s to 1000s of nodes, the construction of an efficient and scalable information system is a key issue, as it is vital for providing querying and discovery services. Today most Grids adopt a centralized or hierarchical model for their information system, but this model is characterized by poor scalability, resiliency and load-balancing features. Nowadays the rese...

The paper addresses the issue of optimal organization of production. I compare three organizational forms: centralization (one agent produces different inputs), decentralization (each of the two agents produces a different input and contracts directly with the principal), and delegation (two agents produce different inputs, the principal contracts with one of them only). The optimal organizatio...

While drivers are not expected to vote while driving, VANETs can be an excellent media for dissemination of decentralized regional polls and for prerecorded votes/opinions on regional issues in a decentralized opinion poll. We propose and evaluate heuristics for scheduling messages in a VANET broadcastingbased dissemination of decentralized opinion polling data among self-interested participant...

The efficiency of service discovery in distributed systems relies on the collaboration of the agents and the structure of the relations established among them. Structural relations cannot be static, agents should be able to adapt their links as the domain conditions and their interests change. This self-organization considerably improves the performance of the service discovery process. We pres...

The efficiency of service discovery in distributed systems relies on the collaboration of the agents and the structure of the relations established among them. Structural relations cannot be static, agents should be able to adapt their links as the domain conditions and their interests change. This self-organization considerably improves the performance of the service discovery process. We pres...

This thesis is intended to be a succinct and rather informal presentation of some of my most recent work, which has been done in collaboration with several other people. In particular this thesis concentrates on our contributions to the study of incomplete information in the context of data interoperability. In this scenario data is heterogenous and decentralized, needs to be integrated from se...

Drug has a great and crucial role inboth the health systems and the quality of life, and thereforeits shortage can cause death.In order to the important role of drugs,pharmaceutical supply chain(PSC) shouldensure that drugs are delivered to people in the right time with the best quality.On the other hand, thesupply chain (SC) members depend on each other for resources and information, and it ha...

There has been for several years a growing interest in defining new access control models and administration facilities for these models. Several models have observed that only structuring the model using the concept of roles as in RBAC is not sufficient to administer decentralized enterprises. These models have suggested to consider new concepts such as organization (as in OrBAC) or domain (as...

This paper focuses on the basic principles of information technology (IT) organization within health sciences centers. The paper considers the placement of the leader of the IT effort within the health sciences administrative structure and the organization of the IT unit. A case study of the University of Missouri-Columbia Health Sciences Center demonstrates how a role-based organizational mode...