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Showing posts from September, 2013

HOMESCHOOLED: HOW AMERICAN HOMESCHOOLERS MEASURE UP

Sumber: http://www.topmastersineducation.com/homeschooled/ HOMESCHOOLED: HOW AMERICAN HOMESCHOOLERS MEASURE UP Once upon a time, all children were homeschooled. But around 150 years ago states started making public school mandatory and homeschooling eventually became illegal. It wasn't until the 90's that all states made it legal again. Today, with more than 2 million homeschoolers making up 4% of the school-aged population, it's the fastest growing form of education in the country. HOMESCHOOL HISTORY 1840: 55% of children attended primary school while the rest were educated in the home or by tutors. 1852: The "Common School" model became popular and Massachusetts became the first state to pass compulsory attendance law. Once compulsory attendance laws became effective, America eventually relied entirely on public and private

Korea Rejects Stealth Fighter

Sumber: https://medium.com/war-is-boring/7f5decc62af1 Korea Rejects Stealth Fighter As Jeong Lee explains, leaders fear buying F-35s could result in a ‘hollow’ air force On Aug. 18th South Korea selected Boeing’s F-15SE Silent Eagle as the sole candidate for Phase III of its Fighter Experimental Project (F-X) over Lockheed Martin’s F-35A and the Eurofighter Typhoon. The decision has drawn vociferous criticism from defense experts who fear the selection of F-15SE may not provide the South Korean military with the sufficient operational capabilities balance Japan and China ’s acquisition of fifth-generation stealth fighters. But in hindsight, Zachary Keck of The Diplomat believes that Republic of Korea’s preference for the F-15SE over two other competitors was “ unsurprising .” After all, Boeing won the previou

Real-World Relativity: The GPS Navigation System

Source: http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps.html People often ask me "What good is Relativity?" It is a commonplace to think of Relativity as an abstract and highly arcane mathematical theory that has no consequences for everyday life. This is in fact far from the truth. Consider for a moment that when you are riding in a commercial airliner, the pilot and crew are navigating to your destination with the aid of the Global Positioning System (GPS). Further, many luxury cars now come with built-in navigation systems that include GPS receivers with digital maps, and you can purchase hand-held GPS navigation units that will give you your position on the Earth (latitude, longitude, and altitude) to an accuracy of 5 to 10 meters that weigh only a few ounces and cost around $100

A Course in Machine Learning

http://ciml.info/ A Course in Machine Learning by Hal Daumé III Machine learning is the study of algorithms that learn from data and experience. It is applied in a vast variety of application areas, from medicine to advertising, from military to pedestrian. Any area in which you need to make sense of data is a potential consumer of machine learning. CIML is a set of introductory materials that covers most major aspects of modern machine learning (supervised learning, unsupervised learning, large margin methods, probabilistic modeling, learning theory, etc.). It's focus is on broad applications with a rigorous backbone. A subset can be used for an undergraduate course; a graduate course could probably cover the entire material and then some. You may obtain the written materials by purchasing a ($55) print copy , by downloading the entire book ,

The Habits of the World's Smartest People

http://www.entrepreneur.com/article/228313

Syrian war and global warming

It seems that Syrian war is also caused by the global warming. http://www.climatedepot.com/2013/09/06/2013-conflict-in-syria-blamed-on-drought-caused-by-global-warming-flashback-1933-yo-yo-banned-in-syria-blamed-for-drought-by-moslems/ 2013 conflict in Syria blamed on drought caused by global warming — Flashback 1933: 'YO-YO BANNED IN SYRIA – Blamed For Drought By Moslems' Global warming blamed for more maladies. Real Science reaction: 'In 1933, Syrian experts blamed drought on the use of Yo-Yos. Now we have Yo-Yos blaming it on CO2' Latest science refutes global warming/drought claims: Globally, 'there has been little change in drought over the past 60 years.'