Recent Developments in Wide Area Ubiquitous Network Research

2007 ◽  
Author(s):  
Hiroshi Saito ◽  
Koichi Takasugi
Keyword(s):  
Wide Area ◽  
Network Research ◽  
Recent Developments ◽  
Ubiquitous Network

Wireless access system for Wide Area Ubiquitous Network

2009 ◽  
Author(s):  
Yoshitaka Shimizu ◽  
Daisei Uchida ◽  
Fusao Nuno ◽  
Shigeru Kuwano ◽  
Shinya Ishihara ◽  
...  
Keyword(s):  
Wireless Access ◽  
Wide Area ◽  
Access System ◽  
Ubiquitous Network

Wide area ubiquitous network: the network operator's view of a sensor network

2008 ◽  
Vol 46 (12) ◽  
pp. 112-120 ◽  
Author(s):  
Hiroshi Saito ◽  
Osamu Kagami ◽  
Masahiro Umehira ◽  
Yuichi Kado
Keyword(s):  
Sensor Network ◽  
Wide Area ◽  
Ubiquitous Network

Development of highly sensitive nitrogen dioxide monitoring device and its application to wide-area ubiquitous network

2012 ◽  
Vol 173 ◽  
pp. 191-196 ◽  
Author(s):  
Yasuko Yamada Maruo ◽  
Masayuki Nakamura ◽  
Yuka Higashijima ◽  
Yukio Kikuya ◽  
Motonori Nakamura
Keyword(s):  
Nitrogen Dioxide ◽  
Wide Area ◽  
Monitoring Device ◽  
Highly Sensitive ◽  
Ubiquitous Network

An Overview of Wide Area Measurement System and Its Application in Modern Power Systems

2019 ◽  
pp. 289-307
Author(s):  
H. H. Alhelou
Keyword(s):  
Power Systems ◽  
Power System ◽  
General System ◽  
Area Measurement ◽  
Wide Area ◽  
Measurement Unit ◽  
Monitoring And Control ◽  
Wide Area Measurement System ◽  
Power System Monitoring ◽  
Recent Developments

In this chapter, wide area measurement systems (WAMS), which are one of the cornerstones in modern power systems, are overviewed. The WAMS has great applications in power system monitoring, operation, control, and protection systems. In the modern power systems, WAMS is adopted as a base for the modern monitoring and control techniques. Therefore, an introduction of WAMS is firstly provided. Then, phasor measurement unit (PMU), which is the base of WAMS, is described. Afterward, the most recent developments in power system estimation, stability, and security techniques, which are based on WAMS, are introduced. Later, general system setup for WAMS-based under-frequency load shedding (UFLS) is provided. Finally, the required communications infrastructures are comprehensively discussed.

Wide Area Networking of XRF Generated Geochemical Data in a National Geological Survey

1986 ◽  
Vol 30 ◽  
pp. 281-284
Author(s):  
T. K. Smith
Keyword(s):  
Geological Survey ◽  
Wide Area ◽  
Geochemical Data ◽  
Large Database ◽  
British Geological Survey ◽  
Recent Developments ◽  
Permanent Storage ◽  
Geotechnical Information ◽  
Very Large Database ◽  
Automated Methods

A previous paper by this author (1984) described the evolution of XRF analysis in the British Geological Survey. More recent developments are described here, with particular reference to wide-area networking. Since the Survey was founded in 1835 it has been to a large extent concerned with the amassing of data. In most cases the information is permanently retained, in contrast to some other applications where the data are stored only temporarily. The result of this permanent storage is that a very large database has been created and continues to grow at an increasing rate, partly as the result of extension of the terms of reference to include the continental shelf. Another reason is that geochemical, geophysical and geotechnical information is now included, and automated methods of measurement and data capture now exist.

scholarly journals Inverse Space Filling Curve Partitioning Applied to Wide Area Graphs

2020 ◽  
Author(s):  
Cyprien Gottstein ◽  
Philippe Raipin Parvedy ◽  
Michel Hurfin ◽  
Thomas Hassan ◽  
Thierry Coupaye
Keyword(s):  
Graph Partitioning ◽  
Wide Area ◽  
Geometric Graphs ◽  
Space Filling ◽  
Space Filling Curve ◽  
Scale Free ◽  
Recent Developments ◽  
Curve Partitioning ◽  
Scale Free Graphs ◽  
Filling Curve

The most recent developments in graph partitioning research often consider scale-free graphs. Instead we focus on partitioning geometric graphs using a less usual strategy: Inverse Spacefilling Partitioning (ISP). ISP relies on a space filling curve to partition a graph and was previously applied to graphs essentially generated from Meshes. We extend ISP to apply it to a new context where the targets are now Wide Area Graphs. We provide an extended comparison with two state-of-the-art graph partitioning streaming strategies, namely LDG and FENNEL. We also propose customized metrics to better understand and identify the use cases for which the ISP partitioning solution is best suited. Experimentations show that in favourable contexts, edge-cuts can be drastically reduced, going from more 34% using FENNEL to less than 1% using ISP.

Synchronised Low-Frequency Augmentation of GPS (SYLFA)

1998 ◽  
Vol 51 (3) ◽  
pp. 294-303
Author(s):  
William F. Roland
Keyword(s):  
Data Compression ◽  
High Precision ◽  
New Technologies ◽  
Low Cost ◽  
Low Frequency ◽  
Wide Area ◽  
Signal Modulation ◽  
Modulation Techniques ◽  
Recent Developments ◽  
Very High

As new technologies contribute to the expanded functionality of Loran-C, and as concerns for limitations in GPS and its augmentations are raised, specific aspects of Loran-C have been developed and applied to ameliorate those limitations. Specifically, GPS availability is a concern, particularly in over-land applications. This paper discusses recent developments using very high-precision synchronisation of Loran-C transmissions, new data compression and Loran-C signal modulation techniques to augment GPS accuracy, availability and integrity over a very wide area at very low cost.

New Light on Latin in Pre-Conquest Britain

Britannia ◽  
2007 ◽  
Vol 38 ◽  
pp. 1-11 ◽  
Author(s):  
Jonathan Williams
Keyword(s):  
Iron Age ◽  
First Century ◽  
Wide Area ◽  
South Eastern ◽  
Recent Developments

Recent developments in the reading of Iron Age British coin-legends have added considerably to our knowledge of Latin in pre-conquest Britain. The picture that is now emerging is of the nuanced and sophisticated use of Latin over quite a wide area of South-Eastern England from the late first century B.C. onwards. The question that then arises is what the implications of this material are for our understanding of key developments in the culture, politics and societies of South-Eastern England in the decades before the Roman invasion. This paper argues that they are really rather significant.

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