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  • Teach Foundational Language Principles (CACM May 2015, pp 30-31) | astrofoto.org
    useful approach particularly if we don t hide the fact that we re simplifying the problem In any event I do have another reading assignment from the SIGPLAN Education Board web site http wp acm org sigplaneducationboard for the Knowledge Area of Programming Languages Roland Roberts s blog Log in to post comments Printer friendly version PDF version Navigation Calendar Gallery Constellations Messier Objects M27 The Dumbell Nebula Resources Astronomy Books Buying A Star Buying A Telescope Clubs and Organizations General Interest Imaging and Astrophotography Magazines Mailing Lists and News Groups Science Toy Suppliers Software Weather Information Tips and Tricks Roland s Corner Recent content About Copyright Search form Search User login Username Password Request new password Science Daily Mercury Mercury gets a meteoroid shower from Comet Encke Mercury gets a meteoroid shower from Comet Encke More Science Daily Venus The aliens are silent because they re dead The aliens are silent because they re dead More Science Daily Mars Antarctic fungi survive Martian conditions on the International Space Station Antarctic fungi survive Martian conditions on the International Space Station Rotation speed may be bad news for Red Planet pioneers Rotation speed may be bad news for Red Planet pioneers The aliens are silent because they re dead More Science Daily Jupiter New study challenges Jupiter s role as planetary shield protecting Earth from comet impacts New study challenges Jupiter s role as planetary shield protecting Earth from comet impacts NASA telescopes detect Jupiter like storm on small star NASA telescopes detect Jupiter like storm on small star Simulating the jet streams and anticyclones of Jupiter and Saturn More Science Daily Saturn Cassini completes final close Enceladus flyby Cassini completes final close Enceladus flyby How water escapes from Saturn Magnetic reconnection How water escapes from Saturn Magnetic reconnection Explosive energy in Saturn s magnetic bubble More Science Daily Neptune Evidence of a real ninth planet discovered Evidence of a real ninth planet discovered Mars to lose its largest moon Phobos but gain a ring Mars to lose its largest moon Phobos but gain a ring Simulation of 3 D exotic clouds on an exoplanet More Science Daily Uranus Jupiter bumped giant planet from our solar system This solar system isn t big enough for the both of us Jupiter More Science Daily Pluto Earth like planets have Earth like interiors Earth like planets have Earth like interiors Evidence of a real ninth planet discovered Evidence of a real ninth planet discovered New Horizons returns first of the best images of Pluto More Science Daily Comets and Asteroids Earth like planets have Earth like interiors Earth like planets have Earth like interiors Artistic space odyssey to broadcast people s messages to the stars Artistic space odyssey to broadcast people s messages to the stars New study challenges Jupiter s role as planetary shield protecting Earth from comet impacts More Science Daily Kuiper Belt Earth like planets have Earth like interiors Earth like planets have Earth like interiors Evidence of a real

    Original URL path: http://www.astrofoto.org/node/1252?destination=node/1252 (2016-02-13)
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  • Education: What Are We Doing When We Teach Computing in Schools? (CACM May 2015, pp24-26)
    the material well enough that the students come away with correct knowledge She goes on and makes an interesting comparison to ITA Initial Teaching Alphabet an experiment from the 1960s that was in vogue when I was just starting kindergarten I was fortunate to have avoided it but my sister just a couple of years younger did not My mom swore it was horrible for her learning to read and in fact part of the author s point in his comparison is that research based studies of ITA showed that was really true and eventually lead to it s discontinuance The point here we re pushing computing without putting the effort into research based instruction so we don t really know what works and what doesn t and choices are being made based on the appeal of the evangelist An additional point watering down the topic to make it more understandable appealing doesn t necessarily help students with what they really need to be learning For ITA it was how to read English and it didn t work For computing the question becomes do restricted environments like Scratch and Alice really help in the long run This hits home with

    Original URL path: http://www.astrofoto.org/print/1251 (2016-02-13)
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  • Education: What Are We Doing When We Teach Computing in Schools? (CACM May 2015, pp24-26) | astrofoto.org
    attended past tense started a Software Engineering Pilot Program two years ago It s not clear where the author of that program got the curriculum and since he left before it even got underweigh it s not clear we ll find out But it s also not clear what the basis for evaluating the program s success will be In the public education arena success is often measured either by standardized exams of debatable value or by popular response Neither will help us to know if we are really improving student s knowledge of how computing works Roland Roberts s blog Log in to post comments Printer friendly version PDF version Navigation Calendar Gallery Constellations Messier Objects M27 The Dumbell Nebula Resources Astronomy Books Buying A Star Buying A Telescope Clubs and Organizations General Interest Imaging and Astrophotography Magazines Mailing Lists and News Groups Science Toy Suppliers Software Weather Information Tips and Tricks Roland s Corner Recent content About Copyright Search form Search User login Username Password Request new password Science Daily Mercury Mercury gets a meteoroid shower from Comet Encke Mercury gets a meteoroid shower from Comet Encke More Science Daily Venus The aliens are silent because they re dead The aliens are silent because they re dead More Science Daily Mars Antarctic fungi survive Martian conditions on the International Space Station Antarctic fungi survive Martian conditions on the International Space Station Rotation speed may be bad news for Red Planet pioneers Rotation speed may be bad news for Red Planet pioneers The aliens are silent because they re dead More Science Daily Jupiter New study challenges Jupiter s role as planetary shield protecting Earth from comet impacts New study challenges Jupiter s role as planetary shield protecting Earth from comet impacts NASA telescopes detect Jupiter like storm on small star NASA telescopes detect Jupiter like storm on small star Simulating the jet streams and anticyclones of Jupiter and Saturn More Science Daily Saturn Cassini completes final close Enceladus flyby Cassini completes final close Enceladus flyby How water escapes from Saturn Magnetic reconnection How water escapes from Saturn Magnetic reconnection Explosive energy in Saturn s magnetic bubble More Science Daily Neptune Evidence of a real ninth planet discovered Evidence of a real ninth planet discovered Mars to lose its largest moon Phobos but gain a ring Mars to lose its largest moon Phobos but gain a ring Simulation of 3 D exotic clouds on an exoplanet More Science Daily Uranus Jupiter bumped giant planet from our solar system This solar system isn t big enough for the both of us Jupiter More Science Daily Pluto Earth like planets have Earth like interiors Earth like planets have Earth like interiors Evidence of a real ninth planet discovered Evidence of a real ninth planet discovered New Horizons returns first of the best images of Pluto More Science Daily Comets and Asteroids Earth like planets have Earth like interiors Earth like planets have Earth like interiors Artistic space odyssey to broadcast people

    Original URL path: http://www.astrofoto.org/node/1251?destination=node/1251 (2016-02-13)
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  • Really installing Oracle Java on Fedora
    man man1 rmiregistry 1 slave usr share man man1 servertool 1 servertool 1 usr java latest man man1 servertool 1 slave usr share man man1 tnameserv 1 tnameserv 1 usr java latest man man1 tnameserv 1 slave usr share man man1 unpack200 1 unpack200 1 usr java latest man man1 unpack200 1 alternatives install usr bin javac javac usr java latest bin javac 200000 slave usr bin appletviewer appletviewer usr java latest bin appletviewer slave usr bin extcheck extcheck usr java latest bin extcheck slave usr bin idlj idlj usr java latest bin idlj slave usr bin jar jar usr java latest bin jar slave usr bin jarsigner jarsigner usr java latest bin jarsigner slave usr bin javadoc javadoc usr java latest bin javadoc slave usr bin javah javah usr java latest bin javah slave usr bin javap javap usr java latest bin javap slave usr bin jcmd jcmd usr java latest bin jcmd slave usr bin jconsole jconsole usr java latest bin jconsole slave usr bin jdb jdb usr java latest bin jdb slave usr bin jdeps jdeps usr java latest bin jdeps slave usr bin jhat jhat usr java latest bin jhat slave usr bin jinfo jinfo usr java latest bin jinfo slave usr bin jmap jmap usr java latest bin jmap slave usr bin jps jps usr java latest bin jps slave usr bin jrunscript jrunscript usr java latest bin jrunscript slave usr bin jsadebugd jsadebugd usr java latest bin jsadebugd slave usr bin jstack jstack usr java latest bin jstack slave usr bin jstat jstat usr java latest bin jstat slave usr bin jstatd jstatd usr java latest bin jstatd slave usr bin native2ascii native2ascii usr java latest bin native2ascii slave usr bin rmic rmic usr java latest bin rmic slave usr bin schemagen schemagen usr java latest bin schemagen slave usr bin serialver serialver usr java latest bin serialver slave usr bin wsgen wsgen usr java latest bin wsgen slave usr bin wsimport wsimport usr java latest bin wsimport slave usr bin xjc xjc usr java latest bin xjc slave usr share man man1 appletviewer 1 appletviewer 1 usr java latest man man1 appletviewer 1 slave usr share man man1 extcheck 1 extcheck 1 usr java latest man man1 extcheck 1 slave usr share man man1 idlj 1 idlj 1 usr java latest man man1 idlj 1 slave usr share man man1 jar 1 jar 1 usr java latest man man1 jar 1 slave usr share man man1 jarsigner 1 jarsigner 1 usr java latest man man1 jarsigner 1 slave usr share man man1 javac 1 javac 1 usr java latest man man1 javac 1 slave usr share man man1 javadoc 1 javadoc 1 usr java latest man man1 javadoc 1 slave usr share man man1 javah 1 javah 1 usr java latest man man1 javah 1 slave usr share man man1 javap 1 javap 1 usr java latest man man1 javap 1 slave usr share man man1 jcmd 1 jcmd 1 usr java latest

    Original URL path: http://www.astrofoto.org/print/1250 (2016-02-13)
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  • Really installing Oracle Java on Fedora | astrofoto.org
    1 slave usr share man man1 extcheck 1 extcheck 1 usr java latest man man1 extcheck 1 slave usr share man man1 idlj 1 idlj 1 usr java latest man man1 idlj 1 slave usr share man man1 jar 1 jar 1 usr java latest man man1 jar 1 slave usr share man man1 jarsigner 1 jarsigner 1 usr java latest man man1 jarsigner 1 slave usr share man man1 javac 1 javac 1 usr java latest man man1 javac 1 slave usr share man man1 javadoc 1 javadoc 1 usr java latest man man1 javadoc 1 slave usr share man man1 javah 1 javah 1 usr java latest man man1 javah 1 slave usr share man man1 javap 1 javap 1 usr java latest man man1 javap 1 slave usr share man man1 jcmd 1 jcmd 1 usr java latest man man1 jcmd 1 slave usr share man man1 jconsole 1 jconsole 1 usr java latest man man1 jconsole 1 slave usr share man man1 jdb 1 jdb 1 usr java latest man man1 jdb 1 slave usr share man man1 jdeps 1 jdeps 1 usr java latest man man1 jdeps 1 slave usr share man man1 jhat 1 jhat 1 usr java latest man man1 jhat 1 slave usr share man man1 jinfo 1 jinfo 1 usr java latest man man1 jinfo 1 slave usr share man man1 jmap 1 jmap 1 usr java latest man man1 jmap 1 slave usr share man man1 jps 1 jps 1 usr java latest man man1 jps 1 slave usr share man man1 jrunscript 1 jrunscript 1 usr java latest man man1 jrunscript 1 slave usr share man man1 jsadebugd 1 jsadebugd 1 usr java latest man man1 jsadebugd 1 slave usr share man man1 jstack 1 jstack 1 usr java latest man man1 jstack 1 slave usr share man man1 jstat 1 jstat 1 usr java latest man man1 jstat 1 slave usr share man man1 jstatd 1 jstatd 1 usr java latest man man1 jstatd 1 slave usr share man man1 native2ascii 1 native2ascii 1 usr java latest man man1 native2ascii 1 slave usr share man man1 policytool 1 policytool 1 usr java latest man man1 policytool 1 slave usr share man man1 rmic 1 rmic 1 usr java latest man man1 rmic 1 slave usr share man man1 schemagen 1 schemagen 1 usr java latest man man1 schemagen 1 slave usr share man man1 serialver 1 serialver 1 usr java latest man man1 serialver 1 slave usr share man man1 wsgen 1 wsgen 1 usr java latest man man1 wsgen 1 slave usr share man man1 wsimport 1 wsimport 1 usr java latest man man1 wsimport 1 slave usr share man man1 xjc 1 xjc 1 usr java latest man man1 xjc 1 Roland Roberts s blog Log in to post comments Printer friendly version PDF version Navigation Calendar Gallery Constellations Messier Objects M27 The Dumbell Nebula Resources Astronomy Books Buying A Star Buying A Telescope Clubs and

    Original URL path: http://www.astrofoto.org/node/1250?destination=node/1250 (2016-02-13)
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  • Roland Roberts's blog | astrofoto.org
    thought they seller did provide a 32 bit install disk Read more about Testing Astro Video Capture in Linux Log in to post comments Teach Foundational Language Principles CACM May 2015 pp 30 31 Submitted by Roland Roberts on Thu 06 04 2015 13 25 The authors point to teaching programming languages as opposed to logic as being a seriously weak spot in computer science education While the Hour of Code has a lot of appeal and can introduce people to computing they point out that new computing languages are continuously being developed to try to solve new problems They make numerous examples and point to Dijkstra s classic Go To Statement Considered Harmful as examples of how understanding a problem has lead to new languages and new language structures Read more about Teach Foundational Language Principles CACM May 2015 pp 30 31 Log in to post comments Education What Are We Doing When We Teach Computing in Schools CACM May 2015 pp24 26 Submitted by Roland Roberts on Thu 06 04 2015 13 21 This article initally caught my attention with it s graphic and caption SCIENCE Gravity makes haveier things fall faster The author goes on to recount her experience with just such a poster in a local elementary science fair and her lack of success in having it taken down The point we have started pushing instruction of computing and programming into schools where there are non specialist teachers who are expected to understand the material well enough that the students come away with correct knowledge Read more about Education What Are We Doing When We Teach Computing in Schools CACM May 2015 pp24 26 Log in to post comments Really installing Oracle Java on Fedora Submitted by Roland Roberts on Tue 05 26 2015 20 16 This has nothing to do with astronomy at all but I can t find a good place to save this information So If you re trying to install Oracle s Java on Fedora after you ve done so the following will set up all of the alternatives links you want need Read more about Really installing Oracle Java on Fedora Log in to post comments Pages 1 2 3 4 5 6 7 8 9 next last Navigation Calendar Gallery Constellations Messier Objects M27 The Dumbell Nebula Resources Astronomy Books Buying A Star Buying A Telescope Clubs and Organizations General Interest Imaging and Astrophotography Magazines Mailing Lists and News Groups Science Toy Suppliers Software Weather Information Tips and Tricks Roland s Corner Recent content About Copyright Search form Search User login Username Password Request new password Science Daily Mercury Mercury gets a meteoroid shower from Comet Encke Mercury gets a meteoroid shower from Comet Encke More Science Daily Venus The aliens are silent because they re dead The aliens are silent because they re dead More Science Daily Mars Antarctic fungi survive Martian conditions on the International Space Station Antarctic fungi survive Martian conditions on the International Space Station Rotation

    Original URL path: http://www.astrofoto.org/blog/5?destination=blog/5%3Fpage%3D1 (2016-02-13)
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  • Roland Roberts's blog | astrofoto.org
    as I need new glasses Having joined the over 40 crowd a few years ago I ve taken to wearing bifocals I gave up on the progressive lens version as I simply couldn t get used to them That s apparently a common problem but annoying to find out after the fact since not only could I not get used to them but they cost more too Read more about Eyeglasses and Dispersion Log in to post comments Changing UID GID on Mac OS X 10 5 Submitted by Roland Roberts on Sun 08 17 2008 21 00 Okay this is not an astronomy topic but I got stumped on this for a long time and searching the web while helpful didn t make it exactly obvious Why would you even want to change GID or UID Well I needed to synchronize UID and GID with my NFS server for file sharing We have two Macs and the accounts had been set up at different times so the UIDs were not the same Read more about Changing UID GID on Mac OS X 10 5 Log in to post comments Canon DSLR and Linux II Submitted by Roland Roberts on Wed 08 13 2008 11 42 I ve been busy not writing that is doing other things and have discovered that Linux can control both of my Canon Digital Rebels at the same time It turns out there is a bug in gphoto2 that ignores the port setting if you didn t also supply a camera setting If you supply camera you must supply port but the reverse is not supposed to be true In any event it s easy enough to work around and I can now talk to both cameras Read more about Canon DSLR and Linux II Log in to post comments Canon DSLR and Linux Submitted by Roland Roberts on Thu 07 24 2008 13 23 Well in the past couple of days I got both a pleasant surprise and a bit of a let down Read more about Canon DSLR and Linux Log in to post comments Pages first previous 6 7 8 9 10 11 12 13 14 next last Navigation Calendar Gallery Constellations Messier Objects M27 The Dumbell Nebula Resources Astronomy Books Buying A Star Buying A Telescope Clubs and Organizations General Interest Imaging and Astrophotography Magazines Mailing Lists and News Groups Science Toy Suppliers Software Weather Information Tips and Tricks Roland s Corner Recent content About Copyright Search form Search User login Username Password Request new password Science Daily Mercury Mercury gets a meteoroid shower from Comet Encke Mercury gets a meteoroid shower from Comet Encke More Science Daily Venus The aliens are silent because they re dead The aliens are silent because they re dead More Science Daily Mars Antarctic fungi survive Martian conditions on the International Space Station Antarctic fungi survive Martian conditions on the International Space Station Rotation speed may be bad news for Red Planet pioneers Rotation speed

    Original URL path: http://www.astrofoto.org/blog/5?page=9 (2016-02-13)
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  • Roland Roberts's blog | astrofoto.org
    to get in line Our neighbors saw the article before I did and brought it over Read more about Article in Time Out New York Kids Log in to post comments NEAIC and NEAF Submitted by Roland Roberts on Tue 04 29 2008 10 10 The imaging conference NEAIC and the Telescope Show NEAF are over for this year The last few days have been pretty hectic and I m just now catching up On Friday I attended a spectroscopy workshop led by Olivier Thizy where he walked us through the process of using a spectrum taken with a diffraction grating in front of a Canon 350D Digital Rebel XT which we then used to measure the rotational speed of Saturn What a cool application using completely off the shelf components Read more about NEAIC and NEAF Log in to post comments NEAIC Underway Submitted by Roland Roberts on Fri 04 25 2008 09 04 The Northeast Astronomical Imaging Conference is starting its second day Yesterday s set of talks were great The plenary session by Ken Crawford provided some interesting ideas on how to bring out image details His focus was on techniques appropriate to what he labelled technical art wherein he spends quite a bit of time using various image masks to selectively process parts of the image to bring out local features Read more about NEAIC Underway Log in to post comments Dark Skies Submitted by Roland Roberts on Wed 04 16 2008 10 09 If you haven t seen today s APOD image go have a look It s a view of the night sky over Flagstaff Arizona Read more about Dark Skies Log in to post comments Blackbody Physlet Submitted by Roland Roberts on Tue 03 18 2008 10 57 I m supposed to keep on top of these things and I ve certainly read about them enough but usually in passing and I immediately rush off to the next thing on my to do list What am I mumbling about Read more about Blackbody Physlet Log in to post comments Pages first previous 7 8 9 10 11 12 13 14 15 next last Navigation Calendar Gallery Constellations Messier Objects M27 The Dumbell Nebula Resources Astronomy Books Buying A Star Buying A Telescope Clubs and Organizations General Interest Imaging and Astrophotography Magazines Mailing Lists and News Groups Science Toy Suppliers Software Weather Information Tips and Tricks Roland s Corner Recent content About Copyright Search form Search User login Username Password Request new password Science Daily Mercury Mercury gets a meteoroid shower from Comet Encke Mercury gets a meteoroid shower from Comet Encke More Science Daily Venus The aliens are silent because they re dead The aliens are silent because they re dead More Science Daily Mars Antarctic fungi survive Martian conditions on the International Space Station Antarctic fungi survive Martian conditions on the International Space Station Rotation speed may be bad news for Red Planet pioneers Rotation speed may be bad news for Red

    Original URL path: http://www.astrofoto.org/blog/5?page=10 (2016-02-13)
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