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Network Diagnostic Tool
Test your connection speed and receive sophisticated diagnosis of problems limiting speed.
Glasnost
Test whether BitTorrent is being blocked or throttled.
Network Path and Application Diagnosis
Diagnose common problems that impact last-mile broadband networks.
Pathload2
Test your available bandwidth.
ShaperProbe
Determine whether an ISP is performing traffic shaping.
NANO (Coming soon. In the meantime, try the non-M-Lab Alpha release.)
Determine whether an ISP is degrading the performance of a certain subset of users, applications, or destinations.
marcell mars's Library tagged → View Popular
23 Sep 09
Use tools running on M-Lab to test your Internet connection. | M-Lab
"Use tools running on M-Lab to test your Internet connection. Test your connection speed and receive sophisticated diagnosis of problems limiting speed.; Test whether BitTorrent is being blocked or throttled.; Diagnose common problems that impact last-mile broadband networks.; Test your available bandwidth.; Determine whether an ISP is performing traffic shaping.; Determine whether an ISP is degrading the performance of a certain subset of users, applications, or destinations."
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Use tools running on M-Lab to test your Internet connection.
04 Aug 09
Bokode - Camera Culture Group, MIT Media Lab
"Current optical tags, such as barcodes, must be read within a short range and the codes occupy valuable physical space on products. We present a new low-cost optical design so that the tags can be shrunk to 3mm visible diameter, and unmodified ordinary cameras several meters away can be set up to decode the identity plus the relative distance and angle. The design exploits the bokeh effect of ordinary cameras lenses, which maps rays exiting from an out of focus scene point into a disk like blur on the camera sensor. This bokeh-code or Bokode is a barcode design with a simple lenslet over the pattern. We show that an off-the-shelf camera can capture Bokode features of 2.5 microns from a distance of over 4 meters."
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Current optical tags, such as barcodes, must be read within a short range and the codes occupy valuable physical space on products. We present a new low-cost optical design so that the tags can be shrunk to 3mm visible diameter, and unmodified ordinary cameras several meters away can be set up to decode the identity plus the relative distance and angle. The design exploits the bokeh effect of ordinary cameras lenses, which maps rays exiting from an out of focus scene point into a disk like blur on the camera sensor. This bokeh-code or Bokode is a barcode design with a simple lenslet over the pattern. We show that an off-the-shelf camera can capture Bokode features of 2.5 microns from a distance of over 4 meters.
27 Apr 09
Public Timestamp
"Timestamping creates evidence, that some digital data already existed at a specific date."
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Timestamping creates evidence, that some digital data already existed at a specific date.
15 Mar 09
A Photo Editor - JPG Magazine Profit And Loss
"the demise of the magazine was contributed to by CEO Mitch Fox and his $500,000 a year salary, the expensive salespeople he hired, launching a travel title called everywhere and preparing a fashion magazine. If that’s true, it’s simply run of the mill magazine making hubris where people assume something that works at one level can be scaled to the next. Maybe this is also the end of an era where a powerful sales staff with serious marketing dollars can bring in more advertising than great content and loyal readers on its own."
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the demise of the magazine was contributed to by CEO Mitch Fox and his $500,000 a year salary, the expensive salespeople he hired, launching a travel title called everywhere and preparing a fashion magazine. If that’s true, it’s simply run of the mill magazine making hubris where people assume something that works at one level can be scaled to the next. Maybe this is also the end of an era where a powerful sales staff with serious marketing dollars can bring in more advertising than great content and loyal readers on its own.
Newspapers and Thinking the Unthinkable « Clay Shirky
“When a 14 year old kid can blow up your business in his spare time, not because he hates you but because he loves you, then you got a problem.”
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“When a 14 year old kid can blow up your business in his spare time, not because he hates you but because he loves you, then you got a problem.”
Lunar Standard Time (LST) - What time is it on the Moon?
"The Lunar year consists of twelve days, named after the first men who walked on the Moon. Each day is divided into 30 cycles of time, with each cycle being divided into 24 moon-hours. Each moon-hour then has 60 moon-minutes, which in turn of course are made up of 60 moon-seconds each."
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The Lunar year consists of twelve days, named after the first men who walked on the Moon. Each day is divided into 30 cycles of time, with each cycle being divided into 24 moon-hours. Each moon-hour then has 60 moon-minutes, which in turn of course are made up of 60 moon-seconds each.
02 Oct 08
Free Website Test
The Website test verifies the server status, downloads the full HTML content and measures the response time of the test website. The test results display the times for DNS lookup, connect, download the first byte and download the complete HTML of the tested website. Common use of the web site testing is to verify if a website is up and running and to measure website speed and response time.
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The Website test verifies the server status, downloads the full HTML content and measures the response time of the test website. The test results display the times for DNS lookup, connect, download the first byte and download the complete HTML of the tested website. Common use of the web site testing is to verify if a website is up and running and to measure website speed and response time.
09 Sep 08
Feeling ill? It could be the planets, says govt study- Hindustan Times
The five-year study, nearing completion, is being conducted by the Delhi-based Lal Bahadur Shastri Rashtriya Sanskrit Vidyapeetha’s department of medical astrology. The department has been recording the birth details of patients and their medical history from Delhi hospitals, and has a databank of over 1,000 horoscopes. In nearly 75 per cent cases, a strong co-relation is found between the prediction of occurrence of a disease at a specific time and its occurrence,” Dr Prem Kumar Sharma, head of the medical astrology department, told HT.
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The five-year study, nearing completion, is being conducted by the Delhi-based Lal Bahadur Shastri Rashtriya Sanskrit Vidyapeetha’s department of medical astrology.
The department has been recording the birth details of patients and their medical history from Delhi hospitals, and has a databank of over 1,000 horoscopes. In nearly 75 per cent cases, a strong co-relation is found between the prediction of occurrence of a disease at a specific time and its occurrence,” Dr Prem Kumar Sharma, head of the medical astrology department, told HT.
15 Aug 08
The True Price of SMS Messages | A GThing Science Project
I made a paper for the univeristy some years ago. The marginal cost of a SMS is 0.
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I made a paper for the univeristy some years ago. The marginal cost of a SMS is 0.
21 Jun 08
Latitude and Longitude of a Point
Get the Latitude and Longitude of a Point. When you click on the map, move the marker or enter an address the latitude and longitude coordinates of the point are inserted in the boxes below.
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Get the Latitude and Longitude of a Point
When you click on the map, move the marker or enter an address the latitude and longitude coordinates of the point are inserted in the boxes below.
29 May 08
Hadoop implements MapReduce, using the Hadoop Distributed File System (HDFS)
Hadoop is a software platform that lets one easily write and run applications that process vast amounts of data. Here's what makes Hadoop especially useful:
* Scalable: Hadoop can reliably store and process petabytes.
* Economical: It distributes the data and processing across clusters of commonly available computers. These clusters can number into the thousands of nodes.
* Efficient: By distributing the data, Hadoop can process it in parallel on the nodes where the data is located. This makes it extremely rapid.
* Reliable: Hadoop automatically maintains multiple copies of data and automatically redeploys computing tasks based on failures.
Hadoop implements MapReduce, using the Hadoop Distributed File System (HDFS) (see figure below.) MapReduce divides applications into many small blocks of work. HDFS creates multiple replicas of data blocks for reliability, placing them on compute nodes around the cluster. MapReduce can then process the data where it is located. Hadoop has been demonstrated on clusters with 2000 nodes. The current design target is 10,000 node clusters.
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Scalable:
Hadoop can reliably store and process petabytes.
Economical:
It distributes the data and processing across clusters of
commonly available computers. These clusters can number into the
thousands of nodes.
Efficient:
By distributing the data, Hadoop can process it in parallel on
the nodes where the data is located. This makes it extremely
rapid.
Reliable:
Hadoop automatically maintains multiple copies of data and
automatically redeploys computing tasks based on failures.
Hadoop is a software platform that lets one easily write and run
applications that process vast amounts of data.
Here's what makes Hadoop especially useful:
Hadoop
implements MapReduce,
using the Hadoop Distributed File System (HDFS) (see figure below.)
MapReduce divides applications into many small blocks of work.
HDFS creates multiple replicas of data blocks for reliability,
placing them on compute nodes around the cluster. MapReduce can
then process the data where it is located.
Hadoop has been demonstrated on clusters with 2000 nodes.
The current design target is 10,000 node clusters. -
28 May 08
Laka: the true winner of Eurovision – jannilondon’s Journal – Last.fm
Laka has been the one to catch my attention, and it seems that many others have shared my experience: here on Last.fm on the week of the ESC he became the "Top artist mover" - up 842%, which no other Eurovision performer came near. Hopefully this will help him gain some of the publicity he deserves.
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Laka has been the one to catch my attention, and it seems that many others have shared my experience: here on Last.fm on the week of the ESC he became the "Top artist mover" - up 842%, which no other Eurovision performer came near. Hopefully this will help him gain some of the publicity he deserves.
Six Degrees of Wikipedia
In case anyone is interested, the original research that created the idea of 'six degrees of separation' is summarized and analyzed by Malcolm Gladwell in his essay Six Degrees Of Lois Weisberg [gladwell.com]. The original research was done by Stanley Milgram (of greater fame for the (in)famous Milgram Experiment [wikipedia.org] in which people were led to believe that they were shocking other people to death, but continued to do so anyway because they were Just Following Orders.) Milgram's six-degrees research, to sum up, involved handing out a large number of letters to random people, and asking them to give the letters to other people they knew who they thought would be most likely to know a (given, random, unknown-to-everyone-involved) person, and then tracking how those letters actually moved through society to their intended recipients.
The result was a map that showed large groups of closely-connected people, linked by small numbers of people who were linked into many, disparate, closely-linked groups. These people are unusual and their behavior is unusually influential on others, precisely because they serve to transfer information from homogenous groups to other homogenous groups.
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In case anyone is interested, the original research that created the idea of 'six degrees of separation' is summarized and analyzed by Malcolm Gladwell in his essay Six Degrees Of Lois Weisberg [gladwell.com]. The original research was done by Stanley Milgram (of greater fame for the (in)famous Milgram Experiment [wikipedia.org] in which people were led to believe that they were shocking other people to death, but continued to do so anyway because they were Just Following Orders.) Milgram's six-degrees research, to sum up, involved handing out a large number of letters to random people, and asking them to give the letters to other people they knew who they thought would be most likely to know a (given, random, unknown-to-everyone-involved) person, and then tracking how those letters actually moved through society to their intended recipients.
The result was a map that showed large groups of closely-connected people, linked by small numbers of people who were linked into many, disparate, closely-linked groups. These people are unusual and their behavior is unusually influential on others, precisely because they serve to transfer information from homogenous groups to other homogenous groups.
23 May 08
My eBay Job | Print Article | Newsweek.com
it concluded that "approximately 1.3 million sellers around the world use eBay as their primary or secondary source of income," with an estimated 630,239 in the United States. Take careful note of the phrasing, however: primary or secondary. That could mean 50,000 use eBay as a primary source and 1.25 million as a secondary source. Or it could mean the split is closer to 650,000-650,000.
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Certain numbers have an iconic status in America's business culture. One of them is the number of people who derive income selling goods on eBay: 1.3 million.
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it concluded that "approximately 1.3 million sellers around the world use eBay as their primary or secondary source of income," with an estimated 630,239 in the United States. Take careful note of the phrasing, however: primary or secondary. That could mean 50,000 use eBay as a primary source and 1.25 million as a secondary source. Or it could mean the split is closer to 650,000-650,000.
18 May 08
Samsung sues shippers
The difference between 23 degrees Celsius and 23 degrees Fahrenheit is about $883,000, according to a lawsuit filed this week by Samsung Austin Semiconductor.
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The difference between 23 degrees Celsius and 23 degrees Fahrenheit is about $883,000, according to a lawsuit filed this week by Samsung Austin Semiconductor.
03 Apr 08
'Weight-ism' Is Bigger Than Racism
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Weight discrimination "occurs in employment settings and daily interpersonal relationships virtually as often as race discrimination, and in some cases even more frequently than age or gender discrimination," the researchers report in the current issue of the International Journal of Obesity.
29 Jan 08
Tracking Consumer Savings on eBay - Bits - Technology - New York Times Blog
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, the researchers report that eBay buyers saved more than $7 billion in 2003 and $8.4 billion in 2004. Extrapolating from their data, they project that consumers saved $19 billion on eBay last year.
Communities Dominate Brands: SMS text messaging worth 100 B dollars in 2007
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80 billion dollars worth of revenues out of mobile phone simple SMS text messaging last year (as reported by us long ago, and verified by the ITU stats). Now its clear this year we will pass the 100 billion dollar mark.
The True Cost of SMS Messages » a gthing science project
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What exactly justifies making SMS messages sixty one million times more expensive than ISP data and 200x more expensive than TCP/USPS? How come technology, communication, and infrastructure is getting cheaper while the costs of SMS messages are increasing exponentially? My theory: SMS messages are transfered over air made of solid gold.
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