What is Topic: Definition and 390 Discussions

The BID 770 was a British-built electronic cryptography device, codenamed TOPIC. It was also used by Canada's foreign service under the codename TENEC. TOPIC was brought into service in 1977, and became obsolete in 1995.
TOPIC was used to protect telegraph traffic, and replaced the earlier mechanical system called ROCKEX. It could be operated in both on- and off-line modes. Weighing 65 lb, the machine used diode–transistor logic instead of single transistors.

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  1. M

    Physics topic to write about for a mathematics class?

    So, I am currently in an Advanced Calculus class (ie. elementary analysis of calculus). Our end project is to write a 5-6 page paper on a topic of our choice and relate it back to the class. A lot of the other students are economics majors so they are picking economic topics. I'm a physics...
  2. A

    Need topic regarding Secure multicasting

    Need topic regarding "Secure multicasting" Dear pals, I have idea regarding "Multicasting" , but not have a topic "Secure multicasting" . Please provide resource regarding same.. Thanks, Anes
  3. A

    Secure DNS: Find Resources & Tips for Cryptography & Network Security

    Dear Friends, I am doing my masters in Engg looking for a syllabus topic in "Secure DNS" for Cryptography and Network Security subject . Please help me with a document or resource . I search Youtube and all things not get a good stuff , waiting your reply. Thanks Anes
  4. R

    MHB Advanced topic in numerical solution of differential equation

    Investigate the stability of the PECE method where P=Predictor : y_(n+1) = y_n + hf(y_n) C=Corrector: y_(n+1) = y_n + h [(1-θ) f(y_n) + θ f(y_(n+1))], (0<θ<1) and E is the evaluation step. => substituting the predictor into corrector gives:y_(n+1) = y_n + h [(1-θ) f(y_n) + θf( y_n+ h f y_n...
  5. M

    Stability Analysis for Implicit Euler Method with Negative Amplification Factor

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  6. S

    What is the topic of auto regresive in math?

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  7. R

    MHB Advanced topic in Odes 2

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  8. R

    MHB Advanced Topic in Odes 1

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  9. C

    Some information on this topic?

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  10. T

    Who picks your research topic for a PhD?

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  11. M

    Undergraduate level research topic in physics

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  12. schrodingerscat11

    Tips in finding a research topic

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  13. I

    Masters Dissertation Topic Needed (Metal Additive Manufacturing?)

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  14. A

    Choosing topic for physics/comp sci project, looking for ideas.

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  15. L

    Particle/Nuclear physics ~essay topic

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  16. M

    Looking for literature on a basic topic

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  17. S

    Being involved in research without knowing everything about the topic?

    So I was at an astrophysics summer program and one of the professors offered to help, as he has connections at this university near where I live, if I ever wanted to research/intern there. I know some people at my high school who have done similar things, so I was pretty excited. Trouble is, I...
  18. U

    What are some ideas for a power-related engineering project?

    I need help for chosing a topic for project So i need many ideas of project By the way it should be related to power Thanks
  19. E

    Whic topic can I study to solve the following mechanics problem?

    Hey, Can you please tell which topic is related to the solution of the following problem. I first would like to try it and , if I get stuck, I will ask for help. http://s019.radikal.ru/i611/1306/c7/a3836fbc6f9c.jpg
  20. M

    What do YOU think the most important FirstYear Phys topic is?

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  21. Ascendant78

    Where to find what research has been done on a specific topic?

    I am curious as to how you find all the various research that has been done on a particular topic? Though I am fairly new to the study of physics, I have been told that prior to becoming involved in a particular research project, you want to look into who else has researched that particular...
  22. E

    Frequency Division Multiplexing - Mastergroup 3 - Topic on telecomms

    Frequency Division Multiplexing - "Mastergroup 3" - Topic on telecomms Homework Statement What is the frequency output of the mastergroup combining network for a signal of 552kHz to be translated using mastergroup 3?Homework Equations Mastergroup Spectrum: For AT&T = 564 - 3084 kHz For ITU-T =...
  23. mathmaniac1

    MHB Straying from the topic at hand....

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  24. S

    Exploring GR: Topics for a Theoretical Physics Research Paper

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  25. N

    Complex analysis topic help Need explanation

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  26. I

    Senior Thesis Topic in Number Theory

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  27. schrodingerscat11

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  28. C

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  29. M

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  30. B

    Need ideas for econophysics undergrad thesis topic

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  31. J

    On the topic of evolution, are we distant cousins to, say, a blade of grass?

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  32. N

    Problem involving temp changes in stress and strain topic.

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  33. D

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  34. Y

    Math & Economics Research for Undergrads

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  35. C

    Is there research in a topic such as this?

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  36. S

    What is THE HARDEST topic in mathematics

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  37. T

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  38. J

    What Math Topic Should I Learn Next?

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  39. S

    I need advice as to what math topic to study next

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  40. U

    What is the first topic I should learn

    When you take a high school (A-Level) physics course at school, what are the first couple of topics you learn? I want to begin with the most straight forward basic stuff. I've looked around but can't seem to find a high school syllabus.
  41. E

    Topic related to Forces and Newton's laws

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  42. P

    Traffic Shockwave Physics Topic

    1. Homework Statement : An abrupt slowdown in concentrated traffic can travel as a pulse, termed a shock wave, along the line of cars, either downstream (in the traffic direction) or upstream, or it can be stationary. figure below shows a uniformly spaced line of cars moving at speed v = 26.0...
  43. S

    What is Energy? Seeking Clarity on a Confusing Topic

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  44. J

    What should I study in my free time when school starts?

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  45. azizlwl

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  46. B

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  47. R

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  48. A

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  49. H

    Guidance on choice of a thesis topic in Renewable Energy for an undergraduate

    I'm presently pursuing my undergraduate in Mechanical Engineering, and I need help in choosing a thesis topic in Renewable Energy(as that is what I want to pursue my future in). My university is not equipped with state of the art labs, though they manage to meet the requirements of having the...
  50. D

    The voltage of the 2uf capacitor will be the sum of the two source voltages.

    the topic "capacitors" Hi everyone! while i was working out questions on the topic "capacitors", got stuck somewhere... and my problem is Suppose the arrangement is like ... So two questions are points of my confusion... (1) what will be the direction of flow of current? (2) and...
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