The rapid development of digital technologies provides important opportunities for more effective cultural heritage conservation and management.While the concept of cultural landscape has been accepted by the academic community in the cultural heritage field for many years,the digital conservation of cultural landscapes still lacks pragmatic guidance.The aim of this article is to explore an approach for building a digital information system to support cultural landscape conservation and management.The Slender West Lake scenic area,a typical cultural landscape in China,was used as an instrumental case study.A geo-database was designed and established to integrate the information of the natural,cultural,tangible and intangible landscape features of Slender West Lake.The digital information system for cultural landscapes provides a more holistic,dynamic and specific cultural perspective on heritage for landscape conservators.The system provides comprehensive information support for heritage conservation,management and interpretation,which are not achievable with conventional tools.This article has expanded the cultural heritage theory by presenting a practical guide for the digital information management of cultural landscapes.The workflow for building a cultural landscape geo-database can be used as a reference for heritage projects in China and other countries.
The paper proposes a cooperative distributed target tracking algorithm in mobile wireless sensor networks.There are two main components in the algorithm:distributed sensor-target assignment and sensor motion control.In the key idea of the sensor-target assignment,sensors are considered as autonomous agents and the defined objective function of each sensor concentrates on two fundamental factors:the tracking accuracy and the tracking cost.Compared with the centralized algorithm and the noncooperative distributed algorithm,the proposed approach will not only lead to reasonable measuring performance but also benefit system with low computational complexity and communication energy.Also,a sensor motion algorithm based on gradient control is presented in the paper to trace the targets to reduce tracking error.Simulation results show that the cooperative distributed sensor assignment algorithm has advantages over the centralized algorithm without sacrificing much tracking performance.
