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Abstract. The primary focus of this review is tropical-extratropical interactions and especially the issues involved in determining the response of the extratropical atmosphere to tropical forcing associated with sea surface temperature (SST) anomalies. The review encompasses ...

The data volume in multimedia is dominated by its digital video component. The effective management of this com-ponent is essential to the development of successful multi-media systems. Di@l Video Segmentation (the problem of decomposing video into its component units ) is one ...

Until recently, the management of large image databases has relied exclusively on manually entered alphanumeric annotations. Systems are beginning to emerge in both the research and commercial sectors based on 'content-based' image retrieval, a technique which explicitly ...

Abstract-We study the effects of topological connectivity and wavelength conversion in circuit-switched all-optical wavelength-routing networks. A blocking analysis of such networks is given. We first propose an analytical framework for accurate analysis of networks with ...

We propose an indexing method for time sequences for processing similarity queries. We use the Discrete Fourier Transform (DFT) to map time sequences to the frequency domain, the crucial observation being that, for most sequences of practical interest, only the first few frequencies are strong. Another important observation is Parseval's theorem, which specifies that the Fourier transform preserves the Euclidean distance in the time or frequency domain. Having thus mapped sequences to a lower-dimensionality space by using only the first few Fourier coefficients, we use R * -trees to index the sequences and efficiently answer similarity queries. We provide experimental results which show that our method is superior to search based on sequential scanning. Our experiments show that a few coefficients (1–3) are adequate to provide good performance. The performance gain of our method increases with the number and length of sequences.

In the past few years scholarly discussions have characterized indigenous knowledge as a significant resource for development. This article interrogates the concept of indigenous knowledge and the strategies its advocates present to promote development. The article suggests that both the concept of indigenous knowledge, and its role in development, are problematic issues as currently conceptualized. To productively engage indigenous knowledge in development, we must go beyond the dichotomy of indigenous vs. scientific, and work towards greater autonomy for ‘indigenous’ peoples.