115 research outputs found
On Dimensionality of Coordinate-Based Network Distance Mapping
No full textIn this paper, we investigate the veracity of a basic premise, “that network distance is Euclidean”, assumed in a class of recently proposed techniques that embed Internet hosts in a Euclidean space for the purpose of estimating the delay or “distance” between them. Using the classical scaling method on a number of network distance measurement datasets, we observe “non-Euclidean-ness” in the network distance. We find that this “non-Euclideanness” is caused by the clustering effect of Internet hosts. We also observe that the distance between the nodes in the same cluster is significantly more non-Euclidean than the distance between nodes in different clusters. Our correlation dimension based analysis of intrinsic dimensionality of the datasets reveals that the network distances seem to have a fractional dimension between 2 and 3. We observe that further increasing the dimensionality does not improve the accuracy of the embedding in Euclidean space. Motivated by these results, we propose a new hybrid model for embedding the network nodes using only a 2-dimensional Euclidean coordinate system and small adjustment terms. We show that the accuracy of the proposed embedding technique is as good as, if not better than, that of a 7-dimensional Euclidean embedding.Lee, Sanghwan; Zhang, Zhi-Li; Sahu, Sambit; Saha, Debanjan. (2005). On Dimensionality of Coordinate-Based Network Distance Mapping. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/215663
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Growth Miracles and Growth Debacles: Exploring Root Causes
No full textIn this fascinating book, Sambit Bhattacharyya presents a detailed account of the socio-economic processes that create broad variations in living standards across the globe. The author examines the world's economic history over the last five centuries, replete with growth miracles and growth debacles: growth in Britain was steady, yet China lost her early advantage; North America settler colonies performed significantly better than those of Asia and Africa; Australia and Argentina were notably similar at the start of the twentieth century but delivered strikingly different growth outcomes. The book argues that these differences in growth rate are best explained by an interplay of factors, namely economic, political and geographical. In conclusion it presents long-run comparative growth narratives for Africa, China, India, the Americas, Russia and Western Europe. Presenting a unique and original analytical framework to explain economic growth and decline, and bridging empirical growth literature and economic history, this book will prove a stimulating read for both academic and professional economists, and scholars of economic history and economic growth. Other social scientists including sociologists, political scientists and economic historians will also find the book to be of great value
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Design Considerations for Integrated Proxy Servers
No full textProxy servers reduce client access times as well as load on servers and networks by caching frequently accessed web objects. In this paper, we argue that the growing heterogeneity of data stored on web servers coupled with the increasing diversity in application requirements have made existing proxy servers inadequate. We examine the architecture and mechanisms required by integrated proxy servers that address this heterogeneity in application requirements and data characteristics. Finally, we briefly describe the architecture of an integrated proxy server that is currently being built in our research lab
Penggabungan Sumber Internet Load Balancing Dua ISP Di Mikrotik Dengan Metode PCC Guna Memberikan Akses Internet Untuk Penggunaan Chrome Book (Studi Kasus Di SMP Negeri 1 Sambit)
No full textThe need for internet access is currently very high, both to find information, articles and the latest knowledge. Many schools have integrated the internet network into the teaching and learning process. It is hoped that students can easily find material and understand lessons, namely SMP Negeri 1 Sambit, an educational institution that has made it one of the main sources of internet access in the teaching and learning process, namely by using Chrome Books as learning media. SMP Negeri 1 Sambit wants a stable and reliable internet connection. Therefore a solution emerged to combine the two ISPs (Internet Service Provider) and make the proxy a network link. The author uses the PCC (Per Connection Classifier) method, which is a method that can be used in Load Balancing. With this PCC method, it can be used to group connection traffic that goes through or in and out of the router into several groups and divides the load on both internet connection lines so that overload does not occur.
Keywords: ISP (Internet Service Provider), Dual internet connection, Mikrotik, PCC (Per Connection Classifier), Chrome Book
Design Considerations for Integrated Proxy Servers
No full textProxy servers reduce client access times as well as load on servers and networks by caching frequently accessed web objects. In this paper, we argue that the growing heterogeneity of data stored on web servers coupled with the increasing diversity in application requirements have made existing proxy servers inadequate. We examine the architecture and mechanisms required by integrated proxy servers that address this heterogeneity in application requirements and data characteristics. Finally, we briefly describe the architecture of an integrated proxy server that is currently being built in our research lab. 1 Introduction The growth of the Internet and the World Wide Web has enabled an increasing number of users to access vast amounts of information stored at geographically distributed sites. Due to the non-uniformity of information access, however, popular objects create "hot-spots" of server and network load, and thereby significantly increase latency for information access [17]. Pro..
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