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Africa 'leapfrogs' to wider internet access

umarkalim umarkalim writes  |  about a year ago

umarkalim (859150) writes "In an interview to Aljazeera, Les Cottrell at the SLAC National Accelerator Laboratory explains how Africa will actually 'leapfrog' the need to install hard-wired cables. He highlights that it is often overlooked that the continent is huge and that the countries are diverse. He says that "the cost of the infrastructure is quite high, especially if you have to connect every home with copper cables and fibre-optic cables ... I think in many cases Africa will actually 'leapfrog' the need to install hard-wired cables everywhere, and will be able to use different techniques such as the BRCK modem, the low-earth orbiting satellites or the 3G solutions to get connectivity to where they need.""
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Living Under Drones

umarkalim umarkalim writes  |  more than 2 years ago

umarkalim (859150) writes "In the United States, the dominant narrative about the use of drones in Pakistan is of a surgically precise and effective tool that makes the US safer by enabling “targeted killing” of terrorists, with minimal downsides or collateral impacts. This narrative is false. Following nine months of intensive research—including two investigations in Pakistan, more than 130 interviews with victims, witnesses, and experts, and review of thousands of pages of documentation and media reporting—this report presents evidence of the damaging and counterproductive effects of current US drone strike policies. ... This report is the result of nine months of research by the International Human Rights and Conflict Resolution Clinic of Stanford Law School (Stanford Clinic) and the Global Justice Clinic at New York University School of Law (NYU Clinic)."
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Can Pakistan survive without US aid?

umarkalim umarkalim writes  |  more than 2 years ago

umarkalim (859150) writes "In a blog post at dawn.com Murtaza Haider writes

The British newspaper Guardian maintains an active database documenting six decades of American aid to Pakistan. The data is compiled by Wren Elhai of the Center for Global Development in Washington, DC. The database reveals that since 1948 the US assistance to Pakistan has largely been for civilian purposes. Of the $61.7 billion in total assistance (in constant 2009 dollars) provided to Pakistan between 1948 and 2010, $40.4 billion were provided for economic assistance and $21.3 billion in military assistance. The economic assistance to Pakistan peaked in the early 60s when in excess of $2 billion annually were provided to Pakistan.

"

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Biggest Maps of Dark Matter to Date

umarkalim umarkalim writes  |  more than 2 years ago

umarkalim (859150) writes "Fermilab Press Release:

Two teams of physicists at the U.S. Department of Energy’s Fermilab and Lawrence Berkeley National Laboratory (Berkeley Lab) have independently made the largest direct measurements of the invisible scaffolding of the universe, building maps of dark matter using new methods that, in turn, will remove key hurdles for understanding dark energy with ground-based telescopes.

"

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Fermilab, Berkeley Lab Build Biggest Maps of Dark

umarkalim umarkalim writes  |  more than 2 years ago

umarkalim (859150) writes "Two teams of physicists at the U.S. Department of Energy’s Fermilab and Lawrence Berkeley National Laboratory (Berkeley Lab) have independently made the largest direct measurements of the invisible scaffolding of the universe, building maps of dark matter using new methods that, in turn, will remove key hurdles for understanding dark energy with ground-based telescopes."
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Viewing the Ultra-fast

umarkalim umarkalim writes  |  more than 3 years ago

umarkalim (859150) writes "Staff Scientist Apurva Mehta says, "For 40 years at Stanford Synchrotron Radiation Lightsource (SSRL), we have been taking very high-resolution photographs-photographs of atoms in molecules and crystals and of electronic structures. But now we want to make movies." He and his colleagues are developing a new "pump-probe" facility that promises to expand SSRL's capabilities and complement those of SLAC's X-ray laser, the Linac Coherent Light Source."
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Japanese Internet survives the earthquake

umarkalim umarkalim writes  |  more than 3 years ago

umarkalim (859150) writes "Despite the devastating earthquake, Internet connectivity to Japan was maintained. The PingER project which monitors interregional connectivity in terms of Latencies, Losses, Throughput and Reachability metrics allowed researchers to conclude that Internet connectivity to Japan was maintained. Round Trip Times (RTT) to some hosts increased significantly as seen from SLAC, USA. However as seen from RIKEN in Japan they did not increase. It appears the increase in RTT depends on the route from the monitoring host to Japan. This suggests a possible cable disruption. For more on cables see here."
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Internet performance seen by PingER and Mid-East i

umarkalim umarkalim writes  |  more than 3 years ago

umarkalim writes "February 2011 saw much instability in North African and Middle Eastern countries including Tunisia, Egypt, Algeria, Bahrain, Libya, and Morocco. In some of these countries such as Egypt and Libya there were overt efforts to limit Internet access. It is interesting to see the consequent impact of Internet performance to these countries."
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East Africa gets high speed Internet access

umarkalim umarkalim writes  |  more than 5 years ago

umarkalim writes "With the 2010 Soccer World Cup fast approaching the Seacom undersea fibre optic cable, plugging East Africa into high speed Internet, went live on Thursday July 23, 2009 — as reported by the BBC and CNN. Such a cable should dramatically reduce the cost of bandwidth measured in $/Mbps, reduce the Round Trip Times (RTT) from >~ 480 ms for a geostationary satellite, down to 200-350ms by using shorter distance terrestrial routes, and by increasing the capacity reduce the losses and jitter. In this case study we look at the current state of Internet access for Africa as measured by the PingER project and also at the effect of the new submarine cable connections on the RTTs to countries of Africa as seen from the SLAC National Accelerator Center near San Francisco. The main effects seen so far are on the RTTs for selected sites that have converted to using the terrestrial links. As the new routes stabilize and more and more customers, e.g academia and commercial organizations, subscribe to the service, we can expect to also see lower losses and jitter and higher through-puts together with a wider impact on deployment."
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East Africa gets high speed Internet access

umarkalim umarkalim writes  |  more than 5 years ago

umarkalim writes "With the 2010 Soccer World Cup fast approaching the Seacom undersea fibre optic cable, plugging East Africa into high speed Internet, went live on Thursday July 23, 2009 — as reported by the BBC and CNN. Such a cable should dramatically reduce the cost of bandwidth measured in $/Mbps, reduce the Round Trip Times (RTT) from >~ 480 ms for a geostationary satellite, down to 200-350ms by using shorter distance terrestrial routes, and by increasing the capacity reduce the losses and jitter. In this case study we look at the current state of Internet access for Africa as measured by the PingER project and also at the effect of the new submarine cable connections on the RTTs to countries of Africa as seen from the SLAC National Accelerator Center near San Francisco. The main effects seen so far are on the RTTs for selected sites that have converted to using the terrestrial links. As the new routes stabilize and more and more customers, e.g academia and commercial organizations, subscribe to the service, we can expect to also see lower losses and jitter and higher through-puts together with a wider impact on deployment."
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PingER uses Google Visualization API

umarkalim umarkalim writes  |  about 6 years ago

umarkalim writes "PingER (Ping End-to-end Reporting) is the name given to the Internet End-to-end Performance Measurement (IEPM) project to monitor end-to-end performance of Internet links. It is led by Stanford Linear Accelerator Center and development includes NUST/SEECS (formerly NIIT), FNAL, GATech and ICTP/Trieste. Originally in 1995 it was for the High Energy Physics community, however, this century it has been more focused on measuring the Digital Divide from an Internet Performance viewpoint. The project now involves measurement to over 600 sites in 163 countries, and the team is actively seeking new sites to monitor and monitoring sites for this project, as well as people interested in the data. Recently they customized the Google Visualization API for the motion chart to present the PingER metrics. They also customized the intensity maps to present these metrics along with their coverage worldwide. These visualizations provide a unique perspective on the study of Internet performance and quantification of the digital divide."
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Effects of Fibre Outage through Mediterranean

umarkalim umarkalim writes  |  more than 6 years ago

Umar Kalim writes "Analysts study the effects of the fibre outage through the Mediterranean in terms of network performance by examining the changes in packet losses, latencies and throughput.

"On January 31st, 2008, the NY Times, BBC, The Guardian, CNN and many others reported undersea cable cuts in the Mediterranean. One was damaged near Alexandria, Egypt, and another in the waters off Marseille, France. The two cables were damaged within hours of each other on Wednesday morning of January 30th 2008. Operators believe the damage was caused by ship's anchors during a heavy storm at sea. One of the cables, Sea Me We 4, is owned by 16 telecommunications companies along its route. The second cable, known as the Flag (for Fiber-optic Link Around the Globe) System, runs from Britain to Japan. The outages mainly affected the Middle East and Asia. Most disrupted communications were quickly rerouted through the remaining SEAMEW3 cable or fibres taking the other way around the globe.
We decided to look at the impact on Internet connectivity as seen by the PingER project measurements.""

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