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2. Persistent luminescence - Wikipedia

   en.wikipedia.org/wiki/Persistent_luminescence

   Persistent luminescence involves energy traps (such as electron or hole traps) in a material, [4] which are filled during the excitation. Afterward, the stored energy is gradually released to light emitter centers, usually by a fluorescence-like mechanism.

3. Carrier-sense multiple access - Wikipedia

   en.wikipedia.org/wiki/Carrier-sense_multiple_access

   P-persistent This approach lies between the 1-persistent and non-persistent CSMA access modes. [1] When the transmitting node is ready to transmit data, it senses the transmission medium for idle or busy. If idle, then it transmits immediately. If busy, then it senses the transmission medium continuously until it becomes idle, then transmits ...

4. Carrier generation and recombination - Wikipedia

   en.wikipedia.org/wiki/Carrier_generation_and...

   Trap emission is a multistep process wherein a carrier falls into defect-related wave states in the middle of the bandgap. A trap is a defect capable of holding a carrier. The trap emission process recombines electrons with holes and emits photons to conserve energy. Due to the multistep nature of trap emission, a phonon is also often emitted.

5. ♯P-completeness of 01-permanent - Wikipedia

   en.wikipedia.org/wiki/%E2%99%AFP-completeness_of...

   The #P-completeness of 01-permanent, sometimes known as Valiant's theorem, [1] is a mathematical proof about the permanent of matrices, considered a seminal result in computational complexity theory. [ 2 ] [ 3 ] In a 1979 scholarly paper , Leslie Valiant proved that the computational problem of computing the permanent of a matrix is #P-hard ...

6. The pension fee trap: How 1% could cost you £50,000 - AOL

   www.aol.com/news/pension-fee-trap-1-could...

   But on fees of 1.25 per cent, a quarter of your five per cent returns are getting chewed up and you will have £150,875 – more than £50,000 less and all because of that extra one per cent fee.

7. Persistence (discontinuity) - Wikipedia

   en.wikipedia.org/wiki/Persistence_(Discontinuity)

   A non-persistent discontinuity ends in intact soil or rock. Before movement of the material on both sides of a non-persistent discontinuity is possible, the discontinuity has to extend and break through intact material. As intact material has virtually always far higher shear strength than the discontinuity, a non-persistent discontinuity will ...