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vemsa3d 1.1 - a floss visual em simulator for 3d antennas
Please, note that I experimentally confirmed -once again- that
NASA does not infinitely support direct linking to its Technical Reports Server (NTRS) contents. Therefore, the link given in article: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | Sent......: Thursday, August 19, 2010 7:32 PM | Newsgroups: sci.physics.electromag,rec.radio.amateur.antenna | Subject...: vemsa3d 1.1 - a floss visual em simulator for | 3d antennas | From......: | | ... | J. H. Richmond, Radiation and Scattering by Thin-Wire | Structures in the Complex Frequency Domain, (15), p.6 | http://tinyurl.com/24zwycy | ... - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - is not a valid one anymore. One has to firstly connect to NTRS: http://ntrs.nasa.gov/search.jsp and search for: "Radiation and scattering by thin-wire structures in the complex frequency domain" or some adequate part of it, e.g. like the following one, which it seems that currently holds: "Radiation and scattering by thin-wire" to get the Richmond's report item first and after two more steps the full-text through "View PDF File". Petros Zimourtopoulos |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
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| From......: "Bill Miller" | Newsgroups: rec.radio.amateur.antenna,sci.physics.electromag | Sent......: Tuesday, August 24, 2010 1:00 AM | Subject...: vemsa3d 1.1 - a floss visual em simulator | ..........: for 3d antennas - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | wrote in message ... || "John Smith" wrote in message || ... || On 8/22/2010 11:55 PM, wrote: || || ... || Well, after all, it seems that we only forgot to mention the || name of that elephant in the room -perhpas because its || advantageous name is /F/L/O/S/S/. || || Best regards, || || pez | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | | | | Yes, the free, as in free beer is one great advantage, but an | | advantage not all will be able to take advantage of. Since | | MMANA-GAL and EZNEC have visual interfaces so similar, being | | able to use one is effectively being able to immediately use | | the other. The learning curve into your interface takes just | | a bit longer ... but, as you say, the availability of the | | source makes it highly desirable to at least one group. | | | | Thanks for the swift reply, | | JS | | | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | | You're very welcome! | | But please take into account that our software is not free, | as in free beer or free gratis; is free, as in liberty, in | free speech or free libre*. Therefore, we don't support | license brokers, promote illegal code use or propagandize | software piracy. | | Thank you very much for the chances you gave me to clearly | express our group point of view! | | Kind regards, | | pez | |* Gratis versus Lib | http://en.wikipedia.org/wiki/Gratis_versus_Libre | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | | FYI I'll be posting information and links on your software on | antenneX.com's user group. | | Antennex.com is, perhaps, the largest and most diverse | website devoted exclusively to antennas and related items. | The website has both free (no charge) and fee (charge for | subscription) sections. | | The user group is no charge and there are particiapnts from | close to 100 countries with skill levels from enthusiastic | amateur to world recognized experts. | | Bill | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Thank you very much, Bill, I really appreciate your offer. Please try to do so -if you are an unmoderated user of the magazine list, of course- since our accounts to magazine e-list are about to expire, while, after 7 years or so, our group members' subscriptions to the magazine, have been recently expired -the last one today: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | Sent...: Tuesday, August 24, 2010 7:03 AM | Subject: Your antenneX Paid Subscription Account has Expired | From...: antenneX Online Magazine listmgr-at-antennex.com | To.....: Petros Zimourtopoulos ...-at-antennas.gr - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Petros |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
Petros ... I posted some information on your VEMSA3D on Antennex's discussion group, but your email bounced. May I have a correct email for you, please? PM me if you'd like. Bill Miller kt4yeatyahoo.com |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
On 8/24/2010 1:05 AM, wrote:
... Dear JS, Thank you for pointed out this issue too! As I already said, VEMSA3D is open source code, which is distributed as free-libre; not free-gratis. Therefore, we keep the right to publish full-comments about our source code sometime in the future, as everybody else of course. Please, see GNU GPL 3.0: http://www.gnu.org/licenses/gpl.html Free-gratis is the MS Windows application VEMSA3D, which *everyone* can enjoy the production of it by simply following the fully-commented instructions we already gave at the third page, right column, of our paper: http://arxiv.org/abs/1006.0031 Best regards, pez, SV7BAX Again, I would never look a gift horse in the mouth ... I don't find the lack of comments an surmountable problem. If you have a basic understanding of the concepts which a piece of software source deals with, it is relatively easy to locate them and comment/document them yourself. For example, when looking in software for routines and statements dealing with a circle, you would simple search for constructs dealing with area, circumference, diameter, etc. It is just a logical progression to look for those dealing with the implementation of the moment method. NEC source used in conjunction with these efforts makes it a tolerable exercise in reverse engineering the task ... I see nothing wrong with expecting someone to do a bit of work to get something for "free", LOL. Regards, JS |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
| "Bill Miller" wrote in message
| ... | | Petros ... | | I posted some information on your VEMSA3D on Antennex's | discussion group, but your email bounced. May I have a correct | email for you, please? PM me if you'd like. | | Bill Miller | kt4yeatyahoo.com - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Bill, Yes, indeed! I just saw your appreciative message for vemsa3d along with the comments of other [Antenna-discussion] list members, just a little before, when I unsubscribed from that list: - | Sent...: Wednesday, August 25, 2010 8:43 AM | Subject: You have been unsubscribed from the Antenna-discussion | : mailing list | To.....: ...-at-gmail.com | From...: | | Thanks for your stay with us! | | Regards, Listmgr - as well as of that one founded by ever memorable Cebik: - | Sent...: Wednesday, August 25, 2010 8:50 AM | Subject: You have been unsubscribed from the Cebiksite | mailing list | To.....: ...-at-gmail.com | From...: cebiksite-bounces-at-cebik.com - As of this email address, unfortunately, I have to use it in USENET against e-mail robot-reapers. I already sent you this e-mail from my real e-mail address too. Thank you very much, Petros Zimourtopoulos |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
| wrote in message ...
| ... | Free-gratis is the MS Windows application VEMSA3D, which | *everyone* can enjoy the production of it by simply following | the fully-commented instructions we already gave at the third | page, right column, of our paper: | http://arxiv.org/abs/1006.0031 | ... - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A clarification is needed he This is version 1.0 info, which has to be seen in parallell with that of file [install.txt] included in version 1.1 zip at: http://code.google.com/p/rga/downloads/list pez, SV7BAX |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
| "John Smith" wrote in message
| ... | ... | Again, I would never look a gift horse in the mouth ... I don't | find the lack of comments an surmountable problem. If you have | a basic understanding of the concepts which a piece of software | source deals with, it is relatively easy to locate them and | comment/document them yourself. For example, when looking in | software for routines and statements dealing with a circle, you | would simple search for constructs dealing with area, | circumference, diameter, etc. It is just a logical progression | to look for those dealing with the implementation of the | moment method. NEC source used in conjunction with these | efforts makes it a tolerable exercise in reverse engineering | the task ... | | I see nothing wrong with expecting someone to do a bit of work | to get something for "free", LOL. | | Regards, | JS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - That's right! Since -as you already said- there are various aspects of "free". Therefore, there is no field of application of term 'reverse engineering' especially under the licenses 'Free Libre Source Code' and 'Public Domain Source Code', since there is nothing there to disassembly it. Moreover, under these licenses, ethics impose to give in return at least as much as you get. This is especially holds in VEMSA3D case, in which we get the Source Code included in J.H.Richmond's report: "Computer program for thin-wire structures in a homogeneous conducting medium" or just "Computer program for thin-wire structures" from NASA Technical Reports Server at: http://ntrs.nasa.gov/search.jsp in the way already described in message: | Sent......: Tuesday, August 24, 2010 8:59 AM | Subject...: vemsa3d 1.1 - a floss visual em simulator | : for 3d antennas | Newsgroups: sci.physics.electromag,rec.radio.amateur.antenna | From......: Well, this source code has 1,044 lines of code, in 16 routines: (1,044 = 100 + 61 + 158 + 36 + 9 + 98 + 120 + 104 + 40 + 64 + + 45 + 22 + 22 + 40 + 87 + 38) and in return, we give for now: * only 3 comment lines less than * those exist among these 1,044 lines -as one can easily find them in SGANT routine, at page 22, of the aforementioned report. Best regards, pez, SV7BAX |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
On 8/25/2010 2:18 AM, wrote:
... That's right! Since -as you already said- there are various aspects of "free". Therefore, there is no field of application of term 'reverse engineering' especially under the licenses 'Free Libre Source Code' and 'Public Domain Source Code', since there is nothing there to disassembly it. Moreover, under these licenses, ethics impose to give in return at least as much as you get. This is especially holds in VEMSA3D case, in which we get the Source Code included in J.H.Richmond's report: "Computer program for thin-wire structures in a homogeneous conducting medium" or just "Computer program for thin-wire structures" from NASA Technical Reports Server at: http://ntrs.nasa.gov/search.jsp in the way already described in message: Best regards, ... pez, SV7BAX Yes. Well, "reverse engineering", apparently, has many different meanings to many different people, as "free", also. However, all reverse engineering, done by engineers, does not involve a disassembler. Physical devices and concepts lend themselves well to reverse engineering, also. I certainly have no interests in implementing any of this in a business/financial interest. And, since amateur radio itself demands the concept of "giving back"; It is a well known tradition. I see no conflicts with my directions, uses and interests. NASA's contribution has already been paid for. NASA is the beneficiary of public funds ... I am sure the taxpayers say, "Thank you NASA;" I know I do. Regards, JS |
vemsa3d 1.1 - a floss visual em simulator for 3d antennas
wrote:
Please, note that I experimentally confirmed -once again- that NASA does not infinitely support direct linking to its Technical Reports Server (NTRS) contents. Therefore, the link given in article: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | Sent......: Thursday, August 19, 2010 7:32 PM | Newsgroups: sci.physics.electromag,rec.radio.amateur.antenna | Subject...: vemsa3d 1.1 - a floss visual em simulator for | 3d antennas | From......: | | ... | J. H. Richmond, Radiation and Scattering by Thin-Wire | Structures in the Complex Frequency Domain, (15), p.6 | http://tinyurl.com/24zwycy | ... - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - is not a valid one anymore. One has to firstly connect to NTRS: http://ntrs.nasa.gov/search.jsp I think the tinyurl got screwed up.. the url it maps to is a search request, not the actual direct link to the document. (http://ntrs.nasa.gov/search.jsp?R=87...false&or=true&... qs=Ntt%3DRadiation%2Band%2Bscattering%2Bby%2Bthin-wire%2Bstructures%26... Ntk%3Dall%26Ntx%3Dmode%2Bmatchall%26Ns%3DHarvestDa te%257c1%26N%3D0) ' I would think that using the link by the the handle will remain fixed: http://hdl.handle.net/2060/19740013743 but it's always useful to keep track of the NASA document number (that won't change).. NASA-CR-2396 or TR-2902-10 and hopefully you can always search on that, if the handle dies for some reason. |
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