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Hierarchical Approach in Clustering to Euclidean Traveling Salesman Problem

February 17, 2012 in Optimasi, Prosiding, Publikasi, Sendiri

Abdulah FajarNanna Suryana HermanNur Azman Abu and Sahrin Shahib


There has been growing interest in studying combinatorial optimization problems by clustering strategy, with a special emphasis on the traveling salesman problem (TSP). TSP naturally arises as a sub problem in much transportation, manufacturing and logistics application, this problem has caught much attention of mathematicians and computer scientists. A clustering approach will decompose TSP into sub graph and form cluster, so it may reduce problem size into smaller problem. Impact of hierarchical approach will be investigated to produce a better clustering strategy that fit into Euclidean TSP. Clustering strategy to Euclidean TSP consist of two main step, there are; clustering and tour construction. The significant of this research is clustering approach solution result has error less than 10% compare to best known solution (TSPLIB) and there is improvement to a hierarchical clustering algorithm in order to fit in such Euclidean TSP solution method.

Essential Layers, Artifacts, and Dependencies of Enterprise Architecture

February 17, 2012 in Enterprise Architecture, Publikasi

By Robert Winter and Ronny Fischer


After a period where implementation speed was more important than integration, consistency and reduction of complexity, architectural considerations have become a key issue of information management in recent years again. Enterprise architecture is widely accepted
as an essential mechanism for ensuring agility and consistency, compliance and efficiency. Although standards like TOGAF and FEAF have developed, however, there is no common agreement on which architecture layers, which artifact types and which dependencies
constitute the essence of enterprise architecture. This paper contributes to the identification of essential elements of enterprise architecture by (1) specifying enterprise architecture as a hierarchical, multilevel system comprising aggregation hierarchies,
architecture layers and views, (2) discussing enterprise architecture frameworks with regard to essential elements, (3) proposing interfacing requirements of enterprise architecture with other architecture models and (4) matching these findings with current enterprise
architecture practice in several large companies.

enterprise architecture, architectural components, architectural layers, architectural
views, interfaces

Sumber Dokumen

Bibiliografi Journal of Enterprise Architecture – May 2007

Towards an Enterprise Architecture for Public Administration Using a Top-Down Approach

February 17, 2012 in Enterprise Architecture, Publikasi

Vasilis Peristeras - Greek National Center for Public Administration

Prof. Konstantinos Tarabanis -University of Macedonia


The use of Enterprise Architectures is becoming increasingly widespread in the private sector. Borrowing insights from enterprise reference architectures developed during the last decade, IT vendors and companies belonging to specific industries are establishing reference data and process models advancing the standardization of their businesses and creating a more integrated environment for their activities. Although public administrations share the same problem of non-standardization, which is being magnified rapidly in a changing and demanding environment, little has been done so far in the direction of integration. This article builds a basis, shows initial directions and attempts to stimulate interest in a PA enterprise framework. Following a top-down approach and employing concepts from the fields of public administration, enterprise integration and generic process and data modeling the outline of the ArchPad enterprise architecture for Public Administration is presented.

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