21. These relations were proposed by Roger Penrose in his earliest spin network theory of space. 22. Actor-network theory describes things and objects as active and examines how they direct human action. 23. The concept is widely used in various fields such as biology, network theory , and ecology. 24. His areas of active research included network theory , acoustical systems, electromagnetic apparatus, and data transmission. 25. From the point of view of network theory , transformers are redundant when gyrators are available. 26. Latour thus suggest an Actor-network theory to bridge the gap between the nature and culture. 27. In network theory , the idea presented in the small-world network model has been explored quite extensively. 28. Methods such as social network theory ( cf. 29. He published forty journal papers on electroacoustics, network theory , testing methods and sound and vision broadcasting. 30. *The network theory of aging has encouraged the development of data bases related to human aging.
