General Electric

About: General Electric is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Turbine & Rotor (electric). The organization has 76365 authors who have published 110557 publications receiving 1885108 citations. The organization is also known as: General Electric Company & GE.

Marching cubes: A high resolution 3D surface construction algorithm

Abstract: We present a new algorithm, called marching cubes, that creates triangle models of constant density surfaces from 3D medical data. Using a divide-and-conquer approach to generate inter-slice connectivity, we create a case table that defines triangle topology. The algorithm processes the 3D medical data in scan-line order and calculates triangle vertices using linear interpolation. We find the gradient of the original data, normalize it, and use it as a basis for shading the models. The detail in images produced from the generated surface models is the result of maintaining the inter-slice connectivity, surface data, and gradient information present in the original 3D data. Results from computed tomography (CT), magnetic resonance (MR), and single-photon emission computed tomography (SPECT) illustrate the quality and functionality of marching cubes. We also discuss improvements that decrease processing time and add solid modeling capabilities.

Inequity In Social Exchange

Abstract: Publisher Summary The process of exchange is almost continual in human interactions, and appears to have characteristics peculiar to itself, and to generate affect, motivation, and behavior that cannot be predicted unless exchange processes are understood. This chapter describes two major concepts relating to the perception of justice and injustice; the concept of relative deprivation and the complementary concept of relative gratification. All dissatisfaction and low morale are related to a person's suffering injustice in social exchanges. However, a significant portion of cases can be usefully explained by invoking injustice as an explanatory concept. In the theory of inequity, both the antecedents and consequences of perceived injustice have been stated in terms that permit quite specific predictions to be made about the behavior of persons entering social exchanges. Relative deprivation and distributive justice, as theoretical concepts, specify some of the conditions that arouse perceptions of injustice and complementarily, the conditions that lead men to feel that their relations with others are just. The need for much additional research notwithstanding, the theoretical analyses that have been made of injustice in social exchanges should result not only in a better general understanding of the phenomenon, but should lead to a degree of social control not previously possible. The experience of injustice need not be an accepted fact of life.

Object-Oriented Modeling and Design

Abstract: 1. Introduction. I. MODELING CONCEPTS. 2. Modeling as a Design Technique. 3. Object Modeling. 4. Advanced Object Modeling. 5. Dynamic Modeling. 6. Functional Modeling. II. DESIGN METHODOLOGY. 7. Methodology Preview. 8. Analysis. 9. System Design. 10. Object Design. 11. Methodology Summary. 12. Comparison of Methodologies. III. IMPLEMENTATION. 13. From Design to Implementation. 14. Programming Style. 15. Object-Oriented Languages. 16. Non-Object-Oriented Languages. 17. Databases. 18. Object Diagram Compiler. 19. Computer Animation. 20. Electrical Distribution Design System. 21. Future of Object-Oriented Technology. Appendix A: OMT Graphical Notation. Appendix B: Glossary. Index.

Toward an understanding of inequity.

Abstract: A theory of social inequity, with special consideration given to wage inequities is presented. A special case of Festinger's cognitive dissonance, the theory specifies the conditions under which inequity will arise and the means by which it may be reduced or eliminated. Observational field studies s