1,721,029 research outputs found
Applying Self-Organizing Coordination to Emergent Tuple Organization in Distributed Networks
No full textAn interesting application of self-organization techniques is in the context of coordination languages and models, which aims at developing tools (languages, models, infrastructures) to flexibly manage the interaction of components in distributed systems. In a coordinated system, the environment is filled with coordination media -- e.g. tuple spaces or interaction channels -- enacting coordination laws that are typically reactive, deterministic, and global. Based on the pillars of self-organizing systems and few emerging works in coordination, we propose and discuss the alternative view of self-organizing coordination, where coordination laws are probabilistic, based on local criteria, and time-reactive, thus resulting in coordination services where global properties of interest appear by emergence. To make the discussion more concrete we show an application inspired by corpse clustering and larvae sorting in ant colonies, where a distributed tuple-space-based scenario is enhanced with adaptive tuple clustering and sorting
Flexible and robust run-time configuration for self-managing systems
No full textThis paper describes a methodology for deploying flexible dynamic configuration into embedded systems whilst preserving the reliability advantages of static systems. The methodology is based on the concept of decision points (DP) which are strategically placed to achieve fine-grained distribution of self-management logic to meet application-specific requirements. DP logic can be changed easily, and independently of the host component, enabling self-management behavior to be deferred beyond the point of system deployment. A transparent Dynamic Wrapper mechanism (DW) automatically detects and handles problems arising from the evaluation of self-management logic within each DP and ensures that the dynamic aspects of the system collapse down to statically defined default behavior to ensure safety and correctness despite failures. Dynamic context management contributes to flexibility, and removes the need for design-time binding of context providers and consumers, thus facilitating run-time composition and incremental component upgrade
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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