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fairhavenhorn
http://fairhaven.typepad.com/my_weblog/
Recent Activity
A bunch of googling and stack exchange took me to the many discussions of using R for meteorological variables. That's familiar territory. It's also what is needed to transform the raw Fitbit 5-minute data into hourly and daily data. After... Continue reading
Posted Jan 3, 2016 at Fairhaven, The River
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I wanted the bar chart to be a combination of stacked bars for the individual meals, and then a smoothed trendline of the total carbs for the day. The original data has columns for date, each meal, and a final... Continue reading
Posted Jan 1, 2016 at Fairhaven, The River
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At end of year, I've got a working carbs management for my needs. Data acquisition is primarily manual. I may take pictures of meals. Or I may record it immediately. Most often I look at pictures or remember meals, manually... Continue reading
Posted Dec 31, 2015 at Fairhaven, The River
Using these tools for gathering data from my Fitbit I've now got a little over 2 years worth of CSV files to analyze. I've only made a little slow progress due to other time commitments. What I know so far:... Continue reading
Posted Dec 19, 2015 at Fairhaven, The River
Org-mode tables may be very convenient for data entry and routine use, but the interface to R is very inefficient. What I've found is that when org-mode converts a 1,000 line table into a data table variable for R it... Continue reading
Posted Dec 12, 2015 at Fairhaven, The River
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This weekend I decided to switch my diet and glucose tracking from a combination of org-mode and excel to org-mode, R, and ggplot (R-graphics). Why? Because R is cool, it does way superior statistics, and it has nicer graphics. R... Continue reading
Posted Dec 10, 2015 at Fairhaven, The River
A small update. Dealing with the past four years of glucose data I found another little trick needed when integrating with org-mode. The date format in org-mode is [2015-12-03 Thu] for inactive dates, and <2015-12-03 Thu> for active dates. R... Continue reading
Posted Dec 8, 2015 at Fairhaven, The River
ULA just announced more details on their next generation launcher: http://www.planetary.org/blogs/jason-davis/2015/20150413-united-launch-alliance-vulcan-rocket.html I looks like another major leap in space technology will arrive over the next decade. (It's important to have several kinds of launchers, because you don't want everything to fail when one launcher is temporarily unusable.) Also noteworthy is the extent to which electronics and manufacturing advances are changing things. The microsatellites are becoming more and more capable, which addresses the cost of expanding into space by reducing the weight requirements. Tech is both reducing the cost of launching a kilogram and increasing the capability of a launched kilogram.
Firefox 35 fixes a highly annoying bug introduced in Firefox 34. It had switched to the silly GNOME mouse scroll behavior. This is different than the behavior on Windows or Mac. A left click would jump to position rather than... Continue reading
Posted Jan 21, 2015 at Fairhaven, The River
The World of Yesterday, Stefan Zweig. This is an easy read. It's basically a lament and a memoir of sorts about a remembered lost world. Zweig grew up in Austria from 1880. He describes the decline of the world from... Continue reading
Posted Dec 9, 2014 at Fairhaven, The River
During the month of October I finished: The Human side of Post Mortems, by Dave Zweibeck. This turns out to be about a couple software project postmortems. It is not nearly as useful or informative as I expected. Toxic Schools,... Continue reading
Posted Dec 9, 2014 at Fairhaven, The River
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Table of Contents 1. Mixins explained2. An IHE Product Example3. Issues The proper interpretation and use of IHE’s definitions for actors, options, profiles, and transactions is a regular source of discussion and sometimes confusion. This may come up again at... Continue reading
Posted Jul 18, 2014 at Fairhaven, The River
Ewout Kramer's presentation on DICOM from a FHIR perspective is a good presentation of first impression issues to consider when dealing with images and FHIR. Most important is his recognition of the differences between a normalized and composite (document) view... Continue reading
Posted Jun 4, 2014 at Fairhaven, The River
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Administrative Time Table of Contents 1. A Point in time2. Intervals3. Comparing point time with point time4. Comparing point time and interval time5. Comparing interval time with interval time6. Queries7. Use clarifications needed Administrative time is very important in medical... Continue reading
Posted May 20, 2014 at Fairhaven, The River
Table of Contents 1. Nature of the Attack2. The Risks3. Responses4. Commentary 1. Nature of the Attack Heartbleed is a high profile flaw and attack on the OpenTLS implementation. This analyzes how well IHE ATNA rules mitigated the flaw, what... Continue reading
Posted Apr 13, 2014 at Fairhaven, The River
At this week's WG-06 meeting we have one item that reflects the need to think about installed base and compatibility. We've got a problem with an old basic component of almost every DICOM SOP class. There is a fundamental element... Continue reading
Posted Apr 3, 2014 at Fairhaven, The River
dana boyd's new book "It's Complicated" is worth reading. It uses real sociological study to balance the public hyperventiation and panic about teenagers and the Internet. It's worth buying, and if you're really short of money there is an authorized... Continue reading
Posted Mar 29, 2014 at Fairhaven, The River
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Analysis of FTP Attack Response Table of Contents 1. Nature of the Attack2. Assets3. Responses3.1. Simple Responses3.2. Complex Responses4. Recommendation 1. Nature of the Attack The particular attack that triggered this concern was the discovery that millions of credentials for... Continue reading
Posted Mar 6, 2014 at Fairhaven, The River
What is Archival Table of Contents 1. Overview2. Administrative and Regulatory Archival3. Cost and Performance considerations4. Business continuity5. Data Management6. Conclusion 1. Overview What is archival in a medical records context? How, if at all, should standards address this issue?... Continue reading
Posted Feb 9, 2014 at Fairhaven, The River
I thought until recently that it was established that big birds flew in V formation to save energy. It is true. But it wasn't until last year that they had instrumented birds to prove it. In fact, the birds even... Continue reading
Posted Feb 8, 2014 at Fairhaven, The River
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With the latest cold, the noise from the science deniers has become overwhelming. They don't accept the difference between weather and climate. Climate is about long term statistical statements. Weather is immediate events. They are not the same. The polar... Continue reading
Posted Feb 2, 2014 at Fairhaven, The River
A recent conference on water at MIT brought some interesting concepts around water in the middle east into better focus. The cost of transportation cannot be ignored. For example, the nominal cost of desalinated water on the Israeli coast is... Continue reading
Posted Jan 29, 2014 at Fairhaven, The River
This lecture on immigration and multiculturalism was an interesting change from the more traditional rights/culture/etc. arguments around immigration. Instead of using the rights/tradition/culture framework he asks what is the impact on the old and new countries. This work is evidence... Continue reading
Posted Jan 26, 2014 at Fairhaven, The River
The Wall Street Journal has noticed the growing issues around securing data on personal devices. The BYOD movement has some serious downsides. Companies are implementing phone wipes (reset to factory default) for employee and contractor phones as part of their... Continue reading
Posted Jan 22, 2014 at Fairhaven, The River
Commercial launch of communications and other non-government satellites is already routine. Orbital has various non-government launches and clients already. Orbital also make satellites. SpaceX also has many non-US government launch clients announced, and three recent successful launches with non-NASA customers. The better question is when will there be enough customers to make all the launchers, facilities, etc. viable businesses in the absence of government clients and subsidies.