Isp Definition and 17 Threads

  1. D

    DV Calculation clarification (rocket booster)

    When calculating the dV available from a rocket booster, the below calculation is used: (ISP . g) . ln(Mass when full/Mass when empty) Is 'g' always equal to 9.81 in this equation, or do you use the actual gravitational acceleration that the booster will experience, at it's given altitude, to...
  2. A

    Is Northwestern's ISP Program Worth the Challenge?

    I was wondering if anyone has had any experience with the Integrated Science Program at Northwestern? From the little information I've been able to gather, I've heard that it's extremely rigorous and comparable to other top science programs in the country. I'd be interested in double majoring in...
  3. K

    ISP - Wireless broadband - necessary equipments

    Hi fellas! I am planning to start a ISP in our region, which uses cellular tower for bandwidth signal receiving & transmitting. We have established the leased line back bone to our network and figured out microwave & GSM antenna concepts to receive signals from suppliers and to send signals to...
  4. F

    [Nuclear Rocket]Idea to increase Isp and thrust of nuclear rocket

    I had an interesting idea for increasing the Specific Impulse and Thrust of a nuclear rocket engine; it's probably not practical - best case scenario 20% increase in exhaust velocity, with proportional increase in thrust, at the cost of 1.5x to 2x weight increase, and likely much lower - but I...
  5. turbo

    How Do You Feel About Your ISP's Customer Support?

    This morning, I called TDS to report an outage. The guy that I spoke to denied that there was any outage in my area and demanded that I unplug my modem, restart my PC, and auto-reconfigure the modem, among other things. After over 1/2 hour of that nonsense, he said that I would have to call...
  6. turbo

    A horrible experience with ISP tech support.

    My wife wanted a laptop, and she got a nice bonus this year, so I bought her an ASUS. After checking for compatibility issues, I also ordered a wireless DSL modem/router. I stayed with Actiontec because that's the brand my ISP provides. I tried to Auto-Config the modem with no luck, so I...
  7. E

    Orbital Shift Hohmann transfer Isp Roket Fuel mass calculation

    1. The launch vehicle takes the moon orbiter to a circular orbit around the Earth at 300km altitude. The orbiter is to perform a Hohmann transfer to a Lunar orbit, entering into a circular lunar orbit at 50km altitude. The objective of the mission is to put a 200kg orbiter around the Moon. The...
  8. R

    Understanding ISP Network Connections for Small ISPs

    I'm trying to understand how ISPs agree to connect to each other by considering a hypothetical situation: Suppose I wanted to start my own ISP in a small town. Would I have to pay to connect to another network that is already connected to the internet (hence that would make me connected to the...
  9. T

    Can I Use WordPress with My ISP? Understanding PHP and MySQL Support

    I would like to start blogging using WordPress. I've heard that my ISP needs to support PHP and MySQL in order for this to work? I have no idea what either is but I have seen a few examples of small test-files (info.php) I can upload to my site and attemp to view them in order to find out if my...
  10. fargoth

    ISP can tell what my internal network ip's are?

    ISP can tell what my internal network ip's are? To make a long story short, I use a router, with two computers behind it, I called my ISP for technical help, and the technician there told me I use a router (which is a reason for him to not help me..). He said he sees more then one IP address...
  11. G

    Sarcosinemia, rare genetic disease(cant find a history of it for my bio ISP)

    Homework Statement Ok, so i have a bio ISP based on a genetic disease. The disease i am researching is called sarcosinemia also known as hypersarcosinemia, SARDH deficiency, SARD deficiency, and SAR (as far as i know but the list may go on). I basically need to give a 10 page report on how the...
  12. wolram

    Surprising ISP Choice: 2can & Twitscali

    So i have a new isp, after much searching around i thought the best package was 2can, what a shock to find out to late they are owned by twitscali, the one and only ones i had so much bother with, oh well at least i have a much better download speed for now.
  13. P

    Verizon ISP Service: Honest Reviews from Users

    A friend of mine is looking for a new ISP. He's looking into Verizon and I was wondering if anyone here uses Verizon (or know someone who does) and what your opinion of the service is. Thanks Pete
  14. T

    Becoming an ISP: Questions and Advice from Experienced Professionals

    Hiya guys, I am thinking of becoming a small (for now) ISP here in my country (Indonesia), and I have some questions that I hope you guys can answer... Well, here goes: 1. Where can I get some general information on becoming an ISP? Like the steps to be taken, the skills/knowledge I need...
  15. N

    How can I build a broadband ISP by myself ?

    My country highiest broadband speed is only 2 Mb/s but I heard that some country has up to 100 Mb/s broadband speed . So, I wondered if I can become an isp with such speed but I don't know how ? Do I need to have a lot of ip ? What is the hardware/software requirement ? A nyone can give me...
  16. O

    My isp limited my bandwidth, must find a way around this.

    Well after submitting a very long articulated email to my isp's support page, i got this in response: We limit FTP to 128kbps. Any file transfering program we limit the bandwidth because many of them are bandwidth intensive programs. The rate on it 128kbps. I claimed i needed...
  17. S

    MATLAB Creating a MATLAB Matrix from ISP Connections

    hello everyone! perhaps I am right here. i need help with programming MATLAB. i ve got a txt (or alternatively a xls) file. stored in it are internet service provider connections. i want to import this file and form a matrice. in this initial matrice each connection should be shown (a...
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