Edge Definition and 265 Threads

Enhanced Data rates for GSM Evolution (EDGE) (also known as Enhanced GPRS (EGPRS), IMT Single Carrier (IMT-SC), or Enhanced Data rates for Global Evolution) is a digital mobile phone technology that allows improved data transmission rates as a backward-compatible extension of GSM. EDGE is considered a pre-3G radio technology and is part of ITU's 3G definition. EDGE was deployed on GSM networks beginning in 2003 – initially by Cingular (now AT&T) in the United States.EDGE is standardized also by 3GPP as part of the GSM family. A variant, so called Compact-EDGE, was developed for use in a portion of Digital AMPS network spectrum.Through the introduction of sophisticated methods of coding and transmitting data, EDGE delivers higher bit-rates per radio channel, resulting in a threefold increase in capacity and performance compared with an ordinary GSM/GPRS connection.
EDGE can be used for any packet switched application, such as an Internet connection.
Evolved EDGE continues in Release 7 of the 3GPP standard providing reduced latency and more than doubled performance e.g. to complement High-Speed Packet Access (HSPA). Peak bit-rates of up to 1 Mbit/s and typical bit-rates of 400 kbit/s can be expected.

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  1. S

    D flip-flop, S-R master-slave flip-flop, falling edge of clock, NAND

    Homework Statement A D flip-flop is implemented using an S-R master-slave flip-flop that changes states on the falling edge of the clock. Assume that the circuit is fabricated using NAND gates and that each gate has exactly a propagation delay Tpd = 1ns. a) Determine the set-up (Tsu), hold...
  2. J

    Stress tensor vanishes on cylinder edge

    Homework Statement Given a cylinder in the Ox1x2x3 coordinate system, such that x1 is in the Length direction and x2 and x3 are in the radial directions. The stress components are given by the tensor $$ [T_{ij}] = \begin{bmatrix}Ax_2 + Bx_3 & Cx_3 & -Cx_2 \\ Cx_3 & 0 & 0 \\ -C_2 & 0 &...
  3. inflector

    Smolin's Edge Response - Deterministic Quantum Theory?

    Did anyone read Lee Smolin's response to the Edge.org question: "What are you worried about?" http://edge.org/response-detail/23778 Opening paragraph:
  4. M

    Tangent to the centrum edge of a circle

    Homework Statement Hi i have a circle that is shown by (x-7)2+(y+1)2=20 i also have a line y=2x-5 and i have to explain why the line is a tangent to the edge of the circle i know that the circle has the centre in (7,1) and that the radius of it is 4,4 Homework Equations i know...
  5. D

    Engineering Discover the Cutting Edge Tech Majors You Need to Know

    Which major puts you at the cutting edge of technology? Doesn't have to be electrical engineering or applied physics. Top 5. Thank you.
  6. S

    Constructing an Edge in Progressive Betting Systems for Coin Toss Events

    I came across a post here which is puzzling: http://quant.stackexchange.com/questions/4442/coin-toss-system 2 events: (1) prob(H or T)of a toss = 0.5. (2) prob(HH or TT) in a cluster of 6 tosses > 0.85. If you are betting on event(2) .i.e.A group of 6 instead of the very next toss...
  7. K

    Does time run fast near universe's edge?

    Hello all, this is my first post. My question is, do any theories exist about time relativity based on distance from universe's center? Also interested your own opinions on the subject. Thanks, kadir
  8. J

    A child stands on the edge of a merry-go-round

    Homework Statement A 15 kg child stands on the edge of a small merry-go-round of radius 2.0 m. If the merry-go-round turns at a steady rate of 11 rpm, calculate the magnitude and direction of the net force on the child. Homework Equations I'm thinking FG = G(m/r2) The Attempt at...
  9. caffeinemachine

    MHB Construct using unmarked straight edge only

    Let points $A$ and $B$ be given on the plane. The mid point of $A$ and $B$, call it $M$, is also given. Mark an arbitrary point $P$ on the plane. Using unmarked straight edge only, construct the line passing through $P$ and parallel to $AB$.
  10. N

    Exploring the Edge of the Universe | Victor Lu

    I'm not a physicist! Just wondering what it is like on the edge of the universe? how many dimensions will be there, what force will be acted upon a close object, and what relativity will become? I'm assuming the universe is euclidian (eucklidean? euclidean? my English sucks.) not hyperbolic or...
  11. O

    Ant's Path on Revolving Disc: Calculating Displacement and Path Length

    Homework Statement An ant positioned on the very edge of a Beatles record that is 14.80 cm in radius revolves through an angle of 70.0o as the disk turns. What is the ant's path length? What is the magnitude of the ant's displacement? Homework Equations L=Rtheta The Attempt at...
  12. R

    Race across the Universe:Who is on edge? Force Vs. Light

    Hey there guys, I remembered one stormy night while playing Atari racing game with my son..he asked me: "what is faster force of light?" I escaped with a reply .. "flash first..thunder later" .Suddenly the power was out. My kid went to fetch the flashlight and said to me.."look! push first...
  13. B

    How to Determine Band Gap of Amorphous Materials Using Optical Absorption Edge

    Hello, I am trying to determine the band gap of an amorphous material (a glass sample) and I read that you can do this from the determination of the optical absorption edge. From this kind of measurements you fitt an equation of the type (αhν) = B (hv-Eo) 2. my question are: 1 - is it...
  14. F

    Finding the volume inside a cone bounded by the edge of a sphere

    Homework Statement Find the volume of the region D in R^3 which is inside the sphere x^2 + y^2 + z^2 = 4 and also inside the cone z = sqrt (x^2 + y^2) Homework Equations The Attempt at a Solution So I decided that the best approach might be finding the area under the sphere and...
  15. 3

    Material Studio: Assigning Displacement to a Model Edge

    http://community.accelrys.com/servlet/JiveServlet/showImage/2-14223-12512/%E5%9B%BE%E7%89%871.png I want to assign displacement to the top edge of the above model in Material Studio. How to realize it ? Thank you !
  16. X

    Mealy FSM Edge Detector Code Problems

    Homework Statement Create a Mealy Edge Detector, then measure the pulse width of 75 micro seconds by 50 MHz clock; here is the timing diagram: I am basically trying to emulate this diagram in my test fixture code (using Xilinx 14.1 in Verilog) and am having errors. Also, the tick is...
  17. W

    Insulating Cylindrical Shell, Potential at edge

    Homework Statement A long cylindrical insulating shell has an inner radius of a = 1.37 m and an outer radius of b = 1.60 m. The shell has a constant charge density of 2.70 10−9 C/m3. The picture shows an end-on cross-section of the cylindrical shell. What is the magnitude of the electric...
  18. S

    Diffraction Across a Knife Edge

    I was having a discussion with someone far more expert than I and for whom I have a lot of respect. He was telling me that the path loss of a radio signal from A to B is not necessarily the same as it is from B to A. One of the reasons he mentioned is diffraction over a knife edge which in...
  19. T

    Rotational Edge Drop: Angular Velocity & Translation

    So here is the problem I have. There is a box that is 27.5" tall and 41" tall with a mass of 480lbs. One edge is put on a 3.5" tall block while the other is raised 12" and dropped. The question is to see if the block will continue to rotate and fall on it's side. I have been able to find the...
  20. R

    What Happens If We Travel in One Direction in the Universe?

    We are often told that to understand why the universe does not have an edge think of it like the Earth which has no edge. But I think this analogy breaks down because you can escape from the Earth's gravity and enter into outer space, plus you can dig into Earth and theoretically come out the...
  21. S

    Projectile motion over angled edge

    I am having difficulties with this question as no height for the crater is given please help! :) Homework Statement AN astronaut is speeding over a level stretch of the Moon's surface at 12m/s in her small lunar rover. She drives over the edge of a crater, whose surface slopes downwards at an...
  22. M

    What is an Active*low*Input*and edge* triggered input?

    What is an "Active*low*Input*and edge* triggered input?" I have been reading up on Flip Flops but can't find anywhere that explains in simple terms what an Active low input and edge triggered input are. Can someone help me understand it please? Thanks
  23. C

    Would a particle at the edge of the universe have an infinite amplitude

    First off let me state that I'm just a mechanical engineering student, so I'm not too savvy when it comes to quantum physics, but my teacher was talking about this equation in class and it reminded me about infinite wavelengths near the egde of the universe and the event horizon on a black hole...
  24. W

    What techniques can be used to analyze a rod rotating about the edge of a table?

    A uniform rod of length 4x is rotating about the edge O of the table. (The rod does not fall off the table.) The centre of mass G of the rod is distance x away from O. The rod is making an angle θ with the horizontal. The only forces present are the weight W of the rod, the normal reaction N...
  25. S

    Edge Colouring of Bipartite Graphs: Proving Valency Equality

    Prove by induction on the number of edges in a graph that any bipartite graph has edge colouring number equal to its maximum valency. Also, Find such an edge colouring for a bipartite 4-regular cartesian or tensor product of your choice of 2-regular graphs
  26. Q

    Gnawing questions about the Edge of our Universe

    I've been mauling some questions about the end/edge of our universe in my head over the last couple hours, and Google is soooo inundated with useless pages. So I figured I'd come here to get some theories. Sorry if I ask any dumb questions or posted this in the wrong thread. To Mod- I will move...
  27. S

    I understanding the edge of the universe

    HI , i am a student currently in class 10th , and i aspire to become a theoretical physicist . I particularly want to know about the edge of the universe when i become one . Any way , i have searched the net for many years of posts related to these topics , but most of that stuff is above me ...
  28. N

    Edge detection using LED light source.

    Here's my current project goal ( And what I need help with): I want to use an LED light source, shine it through a 1" x 2" slit and then use a linear array camera to detect the edges of the slit. The problem: Since LEDs are a point source of light emission, my camera has a difficult time...
  29. T

    Mouse onto the edge of phonograph turntable

    Homework Statement mmouse = 0.06kg r = 0.3m \omega = 0.05 rad / s Suppose angular speed does not change. What is the work needed for the mouse to go to the center. Homework Equations Io\omegao = If\omegaf The Attempt at a Solution If \omega doesn't change ,then how can...
  30. F

    Strength reduction factors for welded edge joints

    I've looked everywhere and can't seem to find any information. Would someone be kind enough to point me to some literature?
  31. P

    Cutting edge introductory info re: field emission microscopy and imaging methods

    Folks, I'm self-taught and am currently trying to get up to date about the newest developments in field-emission microscopy and other methods of imaging sub-atomic structures. I'm able to follow (though just barely) Mikhailovskij et al.'s 2009 paper in Physical Review showing electron orbitals...
  32. M

    Particle at the edge of nothing

    I was just thinking. If I would have particle and an interface behind which there is zero proability of this particle being there, what would happened if I tried to push it over this boundary? It will bounce back, spread along this boundary or happily went into oblivion pretending that it...
  33. F

    Singularity, Infinity, Edge, Expansion

    First post in the Physic forum, the thread title are the words that really get on my nerves. I have the following questions. a) Cosmologists say the universe started at a singularity, there for there is a point where the universe started to expand from, if you could look at the singularity...
  34. C

    Orientation of Surface and edge of surface

    Consider a function Q, from some set D in R2 to some set in R3. Suppose Q parametrizes a surface S. Orientation of the edge of the surface must be compatible with orientation of the surface. I read that if the parametrization of the Boundary of the domain D give it anticlockwise direction...
  35. @

    Can We Aim Our Telescopes Towards the Edge of the Universe?

    If we are not located at the center of the universe, then when we look out into space are we not sometimes looking towards the center of the universe and at other times towards maybe the edge of the universe. Assume the universe is finite- since we put an age on it, and the fact that it is...
  36. C

    Two children stand on the edge of a merry-go-round

    Homework Statement Two children stand on the edge of a merry-go-round while their friend accelerates them to an angular speed of 3 revolutions per second. The merry-go-round has a radius 10 m and a mass 100 kg and both kids weigh 35 kg. Once they reach this speed one of the kids jumps off...
  37. N

    What is the length of segEF in the given triangle?

    Overview I've been struggling at this problem for about 3 days now. I've posted it on a couple forums will no answers, so maybe I'll get a solution here. Thanks in advance! Plain Diagram: http://www.swivelgames.com/projects/ideas/circlepoints/getseglength_simpler.png Known: A, B, C...
  38. J

    On the edge of completing this proof about the order of an element

    Homework Statement The Attempt at a Solution Based on my attempt above, I have demonstrated that the order is less than or equal to n. I am certain that it is actually n, but I'm not sure which theorem I can grab finish this thing off. Any tips for pointing me in the right direction?
  39. A

    Dynamics: disc released horizontally, with pin fixed to edge (rotation)

    Hi guys, I am really stumped by this 1st yr Dynamics question, and would appreciate any help on how to approach the question. Homework Statement Homework Equations Torque equations and Force equations Moment of inertia for disc rotating around centre: (mr^2)/2 After using parallel...
  40. K

    Bullet into block of wood on table edge

    Homework Statement A 17 g bullet traveling 475 m/s strikes a 0.7 block of wood that is balanced on a table edge 0.7 m above ground. If the bullet buries itself in the block, find hte distance D at which the block hits the floor. Diagram: Homework Equations Wnc = delta KE + delta PE...
  41. S

    Is it possible to create an edge in coin toss bet?

    http://www.bjmath.com/bjmath/probable/flips.htm http://en.wikipedia.org/wiki/Feller's_coin-tossing_constants In the above 2 links, it's mentioned that if we toss a fair coin ten times then the exact probability that NO consecutive heads come up in succession (i.e. n = 10 and k = 2) is p(10,2)...
  42. I

    Circle vs. Square edge problem

    I got a problem that I need to figure out. I have a piece of pipe 20 inches long and I bend it on a radius at 90 degrees. I measure from the back of the pipe to the end of one side and get 9, I flip it the other way and do the same thing and get 13.555. If you add those you end up with a...
  43. P

    The force of magnitude F acts along the edge of the triangular plate

    Homework Statement I attached the drawing. The force of magnitude F acts along the edge of the triangular plate. Determine the moment of F about point O. Homework Equations M=rxF The Attempt at a Solution What I did was I just picked the top left point of the triangle and labeled...
  44. J

    Leading Edge Slats on Hang Gliders?

    What do you think about the feasibility of adding leading edge slats to a hang glider in order to reduce the stall speed and increase the wing loading. I've seen charts showing nearly a twofold increase in the achievable coefficient of lift because the angle of attack can go so much higher...
  45. 1

    Points on the outer edge of a circle

    My friend was telling me about something he read about involving points on a circle that seemed kind of cool. It went something like this: Have a circle of radius 1, and mark n equally spaced points on the outer perimeter. Choose one of the points, and connect all other points to it...
  46. Y

    Are we at the center of the universe and whats at the edge?

    I am wondering about the size of the universe. I have read that we can only "see" 13.7 billion light years away in all directions and that we are in the center. To my mind this presents a problem. The problem is what are the odds that we are in the center of the universe? Then again even...
  47. R

    Can the Leading-Edge Radius of an Airfoil be Determined from X Y Coordinates?

    Does anyone know how to determine the leading-edge radius of an airfoil using just the x y coordinates.
  48. zonde

    Magnetic bubbles at the edge of the solar system and CMB

    This article http://www.physorg.com/news/2011-06-big-edge-solar.html" tells about discovery of magnetic bubbles at the edge of solar system. As I understand they are around 100AU from Sun and around the size of 1AU. That makes them roughly 3.6° angular size. Shouldn't these bubbles cause...
  49. A

    Big surprise - Magnetic foam at edge of heliosheath.

    Voyager discovers magnetic bubbles or a magnetic foam at the edge of the heliosheath. http://science.nasa.gov/science-news/science-at-nasa/2011/09jun_bigsurprise/ Is this new physics being discovered?
  50. P

    Chasing the edge of the universe?

    Since we know that Information gets more and more dense the slower time gets, and that if you were to slow time to less and less units of time, than exotic particles will start forming and annihilating each other completely randomly (known as the Heisenberg's uncertainty principle), than I...
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