Archive for the ‘Technology news’ Category

How to clear iPhone browsing data history

July 12, 2017

Clearing browsing history can help your smart phone run at optimal speeds.  Learn how to do it.

This  article talks about how to make sure your iPhone runs as efficiently as possible and discusses options for the changing screen and the battery, in addition to taking it to the Apple Store.

Keep Your iPhone Alive Until the New Ones Arrive – WSJ

SpaceX hard landing and explosion video

January 18, 2016

Elon Musk’s SpaceX had a successful launching of a scientific satellite into orbit, January 17, 2016.  The landing on an ocean barge failed and the booster rocket toppled and exploded after coming down vertically on its hot end.  See the video of the launch and failed landing in 1:30 minute video

http://www.wsj.com/video/spacex-rocket-landing-fails-topples-on-floating-platform/6CEDA646-4116-4EEF-84CF-DED24F6392EF.html?mod=trending_now_video_2

Typing Subscripts on an iPad

March 23, 2015

Typing

via Typing Subscripts on an iPad.

Fire sensors for the attic…best advise I didn’t get.

February 26, 2015

Heat sensors in an attic can warn of a fire way before a smoke alarm on an upper floor would trigger an alert. This year two friends had very serious fires that started in the attic and worked their way down. By the time the smoke alarms went off the sleeping families had time to get out, but no more.

Smoke alarms in the attics are not a good idea because the dust interferes with their proper operation. I inquired of the experts and found out that heat sensors in an attic are the best way to detect a fire, and they are not affected by the dust. For some reason I had never heard that, not even from the company that sold me an alarm system, complete with a unit that can autodial a central station.

The wiring in the attic in an older home can start a fire, and no, fuses and circuit breakers will not always trip to prevent a catastrophe. Attic fans and air handlers can also start a fire when they malfunction. In the case of one of my friends who lived in an attached home, his house caught fire when the neighbor’s house caught fire, and the flames traveled across the attics, and down.

Adding two heat sensors to my system cost $159, well worth the price.

Home Monitoring of Patients by Doctors

February 18, 2015

As electronics applications get more sophisticated, and the pressure keeps increasing to keep medical costs down, doctors will more and more rely on home monitoring of patients. Electronic devices at home, such as blood-pressure monitors, digital scales, pulse and oxygen monitors, and EKG recorders to name a few, can easily be monitored remotely by doctors using a home “telestation.” Home telestations can also be programmed to ask relevant questions which can be answered with push button responses.

Monitoring of diabetics’ sugar levels is one of the early applications of this technology, where the data is not always relayed to the doctor, but sometime to a parent via cell phone or to the patient herself. Alarms can wake up a patient, or a parent to advise of an otherwise unnoticed medical situation.

This is just the beginning of what we can be looking forward to in the future.

For a comprehensive treatment of this subject see the Wall Street Journal article, “Stay Home. The Doctor is Watching You.” published February 17, 2015.

Getting an Edge on the other Guy

November 21, 2014

Making money is often about getting the news first, and getting news no one else has.  A new start up company is specializing in mining obscure data in the most novel ways.  How about analyzing shadows from satellite photos to get data on the progress of Chinese constructions projects as an economic predictor?

A new startup  is seeking to turn this kind of data into a money making edge for investors who will have to pay for the service.  Analyzing satellite images of 30 Chinese cities can sometimes, it is hoped, will be more valuable than official governmental pronouncements.

Similarly, photos of fields can provide an insight into the future harvest expectations and futures markets.  The company called Orbital is being headed by James Crawford, an engineer, who made a name for himself at Google being in charge of the huge project to digitize books and make them searchable.

For the full article see my tweet  @JackSiderer, and see a related article on this blog on “Dataminr.”

News Before its News – The New Digitally Connected World

August 27, 2014

Looking for a good article for stats class discussion to talk about how the digital world is changing the world?  An article in the Wall Street Journal Aug. 27, 2014 talks about how Tweets and data miners can work together to get you the news before the news services.  In the opening example, a stock market moving event is reported to “dataminr” followers before the market started to move.  Now that could be cash in the bank!

Check out the full article at http://on.wsj.com/1vNwxIj   If you have trouble getting connected, go to my Tweet, see link below right on this page.

Quotes re Statistics

August 13, 2014

Data is the new oil.

European Consulmer Commissioner   Meglena Kuneva

 

In God we trust.  Others must bring data.

Edwards Demming

 

The only source of knowledge is experience.

Albert Einstein

Using Math to Become a Billionaire — Case Study

July 10, 2014

Mathematician, code breaker, professor, stock picker using mathematical methods…. Adapted from the New York Times, July 7, 2014

James H. Simons, a retired hedge fund titan who used mathematical strategies to become a billionaire, is financing a new medical research center that plans to apply similar strategies to investigate serious diseases.

Mr. Simons, along with his wife, Marilyn, has given $50 million to Cold Spring Harbor Laboratory to pay for the creation of the Simons Center for Quantitative Biology, according to an announcement on Monday. With experts in applied mathematics, computer science and theoretical physics, the center will use sophisticated algorithms to analyze biological data.

A former mathematics professor and government code breaker, Mr. Simons founded Renaissance Technologies in 1982, employing science and math Ph.D.s and using computer algorithms to trade stocks.

Good enough IS good enough.

April 25, 2014

There is an old saying that “Good enough, never is.” While there is much wisdom to that saying, things are changing.

In the day of ‘big data’, the saying is revised by Pat Helland who writes, “If you have too much data, ‘Good enough is good enough.'”

In their book “Big Data,” Viktor Mayer-Schoenberger and Kenneth Cukier explain that when you are dealing with massive amounts of data, as opposed to much smaller samples, occasional errors become less significant. Statistics is becoming less about samples describing the population and more about the population revealing its secrets to new methods of big data analysis. Storing massive amounts of data, and using it to reveal correlations, linear and non-linear, is now replacing hypothesis testing in statistics.