© Copyright 2008. The author, Craig Newell, assigns to the SFU Educational Review the right of first publication and educational and non-profit institutions a non-exclusive license to use this document for personal use and in courses of instruction provided that the article is used in full and this copyright statement is reproduced. Any other usage is prohibited without the express permission o...

Organizations that make use of computer information systems (CIS) are prototypical complex adaptive systems (CAS). This paper shows how an approach from Complexity Science, exploratory agent-based modeling (ABM), can be used to study the impact of two different modes of use of computer-mediated communication (CMC) on organizational culture (OC) and performance. The ABM includes stylized represe...

Purpose The theory of complex adaptive systems (CASs) represents an interesting perspective to study the characteristics circular supply chains (CSCs). In this regard, current literature lacks evidence regarding coordination and integration mechanisms, environment emerging system properties CSCs. This paper aims fill gap focuses on how why companies design (i.e. configure coordinate) their CSCs...

UNLABELLED Phylogenetic trees are widely used to display estimates of how groups of species are evolved. Each phylogenetic tree can be seen as a collection of clusters, subgroups of the species that evolved from a common ancestor. When phylogenetic trees are obtained for several datasets (e.g. for different genes), then their clusters are often contradicting. Consequently, the set of all cluste...

User testing tends to put participants in the role of the user. To evaluate complex systems (such as adaptive systems), a Wizard-of-Oz study may be used, where the role of the system is made easier by allowing somebody on the design team to perform part of it. In this paper, we propose a method whereby participants take the role of the system, allowing early user involvement in the design proce...

this paper is concerned with the consensus tracking problem of high order mimo nonlinear multi-agent systems. the agents must follow a leader node in presence of unknown dynamics and uncertain external disturbances. the communication network topology of agents is assumed to be a fixed undirected graph. a distributed adaptive control method is proposed to solve the consensus problem utilizing re...

in this paper, an observer based fuzzy adaptive controller (fac) is designed fora class of large scale systems with non-canonical non-affine nonlinear subsystems. it isassumed that functions of the subsystems and the interactions among subsystems areunknown. by constructing a new class of state observer for each follower, the proposedconsensus control method solves the problem of unmeasured sta...

some applications are critical and must designed fault tolerant system. usually voting algorithm is one of the principle elements of a fault tolerant system. two kinds of voting algorithm are used in most applications, they are majority voting algorithm and weighted average algorithm these algorithms have some problems. majority confronts with the problem of threshold limits and voter of weight...