The inheritance of Olmsted syndrome that is a very rare congenital with transgredient palmoplantar keratoderma is distinguished by the presence of massive hyperkeratosis with fissured skin and periorificial chaps. It usually appears during the early life and mostly in male pateints. Herein we report a case of Olmsted syndrome which is associated with ichthyosis and somatic type of delusion duri...

Since the early twentieth century, inheritance was seen as the inheritance of genes. Concurrent with the acceptance of the genetic theory of inheritance was the rejection of the idea that the cytoplasm of the oocyte could also play a role in inheritance and a corresponding devaluation of embryology as a discipline critical for understanding human development. Development, and variation in devel...

This is the sixteenth article in a regular series on object-oriented type theory for nonspecialists. Earlier articles have built up λ-calculus models of objects [1], classes [2], inheritance [3, 4] and generic template types [5]. Classification describes the way in which typed objects fit into a hierarchy of classes, which nest inside each other [3]. Inheritance is the short-hand mechanism for ...

Inheritance is one of the main concepts of object-oriented technology. It is claimed that the use of inheritance improves productivity and decreases development time. John Daly et al. reported on two experiments evaluating the effects of inheritance depth on program maintenance. They found that maintenance was performed significantly quicker for software using three levels of inheritance, compa...

In this paper, we describe an empirical investigation into the modiiability and understandability of Object-Oriented (OO) software. A controlled experiment was conducted to establish the eeects of varying levels of inheritance on understandability and modiiability. The software used in this experiment consisted of a C++ system without any inheritance and a corresponding version containing three...

Inheritance is one of the key concepts in object-oriented programming (OOP). However, the usefulness of inheritance in concurrent OOP is greatly reduced by the inheritance anomalies. These anomalies have been subjected to intense research, but they are still only vaguely de ned and often misunderstood. In this paper we show that concurrency is not the real cause of inheritance anomalies. We for...

This thesis develops a semantic model of inheritance and investigates its applications for the analysis and design of programming languages. Inheritance is a mechanism for incremental programming in the presence of self-reference. This interpretation of inheritance is formalized using traditional techniques of fixed-point theory, resulting in a compositional model of inheritance that is directl...