this study is a contribution to assess the high resolution digital aerial imagery for semi-automatic analysis of tree species identification. to maximize the benefit of such data, the object-based classification was conducted in a mixed forest plantation. two subsets of an ultracam d image were geometrically corrected using aero-triangulation method. some appropriate transformations were perfor...

Class: ALoc Abstract Class: ADT Member Data: (none) Member Data: (none) Constructor: (none) Constructor: (none) Methods: (none) Methods: (none) Class Person Member Data: String name; Color eyeColor; int date; Constructor: Person(String n, Color c, int dob); Methods: (none) Class: EmptyLoc Class: ConsLoc Class: EmptyDT Class ConsDT Member Data: (none) Member Data: ADT first; ALoc rest; Member Da...

The CXXR project aims gradually to refactor the fundamental parts of the R interpreter from C into C++ whilst retaining the full functionality of the standard distribution of R. It is hoped that this will enable researchers more easily to enhance the functionality of R by allowing them to extend the interpreter’s internal C++ class hierarchy. The paper summarises progress to date and describes ...

Improving the development of agent intelligence requires improving the mechanisms of that development. This paper explores the application of an established software methodology, object-oriented design, to agent development in two ways. We present a distributed agent architecture, Edmund, and describe first its own object-oriented structure. Then we relate the methodology for developing agent b...

Current use of inheritance has illustrated that the introduction of conceptual inconsistencies is possible in a class hierarchy. This paper discusses the reasons why complete method redefinition infringes the essence of inheritance. A redefinition metric set is proposed and practical experiments demonstrate that the results obtained permit the detection of inheritance design problems. Appropria...

Object-oriented programs evolve by means other than just the addition of new classes. The changes to object-oriented programs that have been most studied are those based on inheritance, on reorganizing a class hierarchy. However, aggrega-tion is a relationship between classes that is just as important as inheritance, and many changes to an object-oriented design involve the aggregate/component ...

In this paper, we propose a schema version model which allows to restructure complex object hierarchy in object-oriented databases. This model extends a schema version model, called RiBS, which is based on the concept of Rich Base Schema. In the RiBS model, each schema version is in the form of updatable class hierarchy view over one base schema, called the RiBS layer, which has richer schema i...

In this paper, we present a new hierarchy which includes the intermediate long wave (ILW) equation at the lowest order. This hierarchy is thought to be a novel reduction of the 1st modified KP type hierarchy. The framework of our investigation is Sato theory.

We propose a hamiltonian formulation of the N = 2 supersym-metric KP type hierarchy recently studied by Krivonos and Sorin. We obtain a quadratic hamiltonian structure which allows for several reductions of the KP type hierarchy. In particular, the third family of N = 2 KdV hierarchies is recovered. We also give an easy constrution of Wronskian solutions of the KP and KdV type equations.

The design and implementation of the initial release of class evolution technology for PJama persistent language is described. This technology supports modi cations to individual classes, class hierarchy, and user-de ned conversion of data contained in class instances when a modi cation to this class leads to the change of instance format. PJama evolution technology was evaluated on an applicat...