Oz Model Related Excerpt from our homepage:
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Just because an application responds to events does not mean it is "event driven"
. Event driven means it spends much of its time waiting for an event and then takes action if and when an event occurs. Contrast this with some programs that do not respond to events at all, but simply do their job and terminate. For example, an operating system command to display the current time. America Top Model It displays the time and is done; it does not wait for events. For more information, see: Event-driven_programming
Implementations
The pattern was first described in 1979 by Trygve Reenskaug, then working on Smalltalk at Xerox research labs. "
More Related Excerpt from our homepage:
"5 MeV
Anti-Muon
μc
1
1
0
1
1
105. 6 MeV
Muon antineutrino
0
1
0
0
1
< 0
. 5 MeV
Charm quark
c
+2/3
2
+1/2
+1/6
3
~1. 5 GeV
Strange quark
s
-1/3
2
-1/2
+1/6
3
~100 MeV
Anti-charm antiquark
cc
-2/3
1
0
-2/3
~1. 5 GeV
Anti-strange antiquark
sc
+1/3
1
0
+1/3
~100 MeV
Generation 3
Tau
Ï„
-1
2
-1/2
-1/2
1
1. 784 GeV
Tau neutrino
ντ
0
2
+1/2
-1/2
1
< 70 MeV
Anti-Tau
τc
1
1
0
1
1
1. 784 GeV
Tau antineutrino
0
1
0
0
1
< 70 MeV
Top quark
t
+2/3
2
+1/2
+1/6
3
173 GeV
Bottom quark
b
-1/3
2
-1/2
+1/6
3
~4. Fitness Model7 GeV
Anti-top antiquark
tc
-2/3
1
0
-2/3
173 GeV
Anti-bottom antiquark
bc
+1/3
1
0
+1/3
~4. 7 GeV
* - These are not ordinary Abelian charges which can be added together but labels of Group representations of Lie groups. "
"
The Higgs boson, which is predicted by the Standard Model, has not been observed as of 2005 (though some phenomena were observed in the last days of the LEP collider that could be related to the Higgs; one of the reasons to build the LHC is that the increase in energy is expected to make the Higgs observable).
The first experimental deviation from the Standard Model came in 1998, when Super-Kamiokande published results indicating neutrino oscillation. This implied the existence of non-zero neutrino masses since massless particles travel at the speed of light and so do not experience the passage of time. The Standard Model did not accommodate massive neutrinos, because it assumed the existence of only "left-handed" neutrinos, which have spin aligned counter-clockwise to their axis of motion. If neutrinos have non-zero mass, they necessarily travel slower than the speed of light. Therefore, it would be possible to "overtake" a neutrino, choosing a reference frame in which its direction of motion is reversed without affecting its spin (making it right-handed). Since then, physicists have revised the Standard Model to allow neutrinos to have mass, which make up additional free parameters beyond the initial 19. Girl Model
A further extension of the Standard Model can be found in the theory of supersymmetry, which proposes a massive supersymmetric "partner" for every particle in the conventional Standard Model. Supersymmetric particles have been suggested as a candidate for explaining dark matter. "