This fourth volume of Advances in Computer Graphics gathers together a selection of the tutorials presented at the EUROGRAPHICS annual conference in Nice, France, Septem ber 1988. The six contributions cover various disciplines in Computer Graphics, giving either an in-depth view of a specific topic or an updated overview of a large area. Chapter 1, Object-oriented Computer Graphics, introduces the concepts of object ori ented programming and shows how they can be applied in different fields of Computer Graphics, such as modelling, animation and user interface design. Finally, it provides an extensive bibliography for those who want to know more about this fast growing subject. Chapter 2, Projective Geometry and Computer Graphics, is a detailed presentation of the mathematics of projective geometry, which serves as the mathematical background for all graphic packages, including GKS, GKS-3D and PRIGS. This useful paper gives in a single document information formerly scattered throughout the literature and can be used as a reference for those who have to implement graphics and CAD systems. Chapter 3, GKS-3D and PHIGS: Theory and Practice, describes both standards for 3D graphics, and shows how each of them is better adapted in different typical applications. It provides answers to those who have to choose a basic 3D graphics library for their developments, or to people who have to define their future policy for graphics.

The term differential-algebraic equation was coined to comprise differential equations with constraints (differential equations on manifolds) and singular implicit differential equations. Such problems arise in a variety of applications, e.g. constrained mechanical systems, fluid dynamics, chemical reaction kinetics, simulation of electrical networks, and control engineering. From a more theoretical viewpoint, the study of differential-algebraic problems gives insight into the behaviour of numerical methods for stiff ordinary differential equations. These lecture notes provide a self-contained and comprehensive treatment of the numerical solution of differential-algebraic systems using Runge-Kutta methods, and also extrapolation methods. Readers are expected to have a background in the numerical treatment of ordinary differential equations. The subject is treated in its various aspects ranging from the theory through the analysis to implementation and applications.

Partner compensation and how partners share profits is central to the cohesive fabric of any professional partnership. While one adage says that "there are as many profit-sharing systems as there are partnerships", there has recently been the emergence of a global practice about what "merit" means and how risk and reward are shared among partners in professional service firms. In The Partner Remuneration Handbook, Michael Roch and Ray D'Cruz provide guidance for senior partners, managing partners, partnership boards, remuneration committees and others involved in the partner compensation process (department heads, CFOs, HRDs), on designing effective profit-sharing systems, reaching fair reward decisions efficiently and implementing motivating contribution management processes. Filled with practical insights, this book draws on principles of partnership, motivation and incentives in human capital management, and executive compensation in closely held businesses. Looking beyond the numbers, the authors balance the big picture with a detailed how-to for any professional partnership irrespective of geography, size and maturity. This title encompasses three core elements: Exploring the different partner reward systems found in most professional firms. Showing how partnerships define and discuss partner contribution commitments that further the firm's overall strategic, operational and financial objectives. Providing decision-making guidance about marrying reward to performance and on Remuneration Committee governance. It also addresses a myriad of special topics, such as rewarding partners in management roles, and provides a proven approach for how firm leaders can take partners with them on the journey of evolving their partner compensation system.