A Network Economics Approach to CTOS Architectures

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A Network Economics Approach to CTOS Architectures, Διατμηματικό Πρόγραμμα Μεταπυχιακών Σπουδών "Οικονομική και Διοίκηση των τηλεπικοινωνικών Δικτύων", Τμήμα Πληροφορικής και Τηλεπικοινωνιών, Τμήμα Οικονομικών Επιστημών, Εθνικό και Καποδιστριακόν Πανεπιστήμιον Αθηνών, Ιούνιος 2004

Transcript of A Network Economics Approach to CTOS Architectures

  • 1. , : 005 007 003: A Network Economics Approach to CTOS Architectures : A.

2. , 18-06-2004 : . , . . , CTOS, . . . , . . , - . , , . , , , . , , , Eric Monteiro. 3. 1. 42. .43. .......................54. .....65. CTOS....96. CTOS KAI ..127. CTOS ...........148. - ...169. , & 9.1 .189.2 ...209.3 ..239.4 ....259.5 ...279.6 Information Rent....289.7 Information Rents ...299.8 , CTOS....3010. Network externalities CTOS3211. CTOS.3436 4. 1. . , , . , : ) ) . CTOS.2. . CTOS , , . CTOS , . UNIX MS-DOS, . , . , , . , , 5. . , . . , , . CTOS , . Top down , , , .. , . , .3. . , . . , , , . , . , . . , . 6. , . , . . . , , ! . , . , ., , . . , . . . , , . , ., . , .4. . 7. . , , , . . (Star role), (Liaison role), , . , , , . . , . (size) , (network externalities). , (inclusiveness). (connectivity) (density). , , . . . : (authority). . . , CTOS, , -, , . 8. , , , . . management , , , . . . . . , . CTOS learning. , . 9. , . Top-down , . , ., , . , . , , . (internalisedcommitment), (identificationcommitment) (compliance commitment).5. CTOS , o . . . . H , , . . , , . client/server ( / ) . client/server 10. . (hardware) client/server., client/server . . ( managers) . , ( , , ) client/server . . , , . CTOS ( Convergent Technologies Operating System) . CTOS ( ), . : . , . , server . , ., . CTOS hardware . . 11. CTOS . CTOS. ( LAN ) hardware. CTOS . CTOS . cluster CTOS ( server ) ( client ) CTOS cluster, . cluster : RS-422 hardware TeleCluster1 ( LAN ).1 Tele-Cluster ( workstations ) server cluster ( star ). 12. clusters, . CTOS peer-to-peer servers. K server . CTOS .. oken Ring thernet ( thin, thick twisted pair ). clusters., CTOS . , CTOS. CTOS . , CTOS , .6. CTOS KAI , , . CTOS. , CTOS , . CTOS .. . , ( ) . . price-to-earnings ratios,stock beta, alpha, q ratios. 13. . . . , . , , . CTOS . , . , . CTOS . . CTOS . , . CTOS . CTOS. . CTOS . . - . . . , . . , .. 14. , , . CTOS . . . . CTOS . CTOS , . , . / CTOS. CTOS , . CTOS . CTOS . , .7. CTOS . . . , . , , . , , , , . , . , 15. . , . . . . , . CTOS. . . CTOS . , . . , . CTOS . . CTOS . . . , . . . CTOS . CTOS . . . 16. , . . . CTOS , . CTOS . . .8. - CTOS . . CTOS . . CTOS . , , , . . . CTOS . . . . , , . , , , . 17. . . , , . , . , CTOS . . , , . . . . CTOS . . . . CTOS . . . , , . . . . CTOS . . . . . 18. . CTOS. CTOS . . . . .9. , & 9.1 . , , . . , , , . . Top-down , , . . , , 19. , ( ). , , , . , , , ( , , ), , . , . , CTOS . , , . . , , . . , , . , , . , , . , , . 20. CTOS. , . , . . . , . .9.2 . . ( ) . m i = 1, ..., m.i - :i) ,ii) . n xi Rn i . x = xi x - ( ) - 21. pRn p x . i :-= - - + i i i i i i i i i C (x ,u ) [x u ]'B [x u ] C (i = 1, ..., m) i = Ci = u R ni = Ci : , , ... : , . x :E[C(x,u)] = E[C (x ,u )] ii ii u = (ui, ... , um) . ) x ... x ( x ama = a1i x x = i u, u ( ). :x u B B[x u ]ai = + - - (i = 1, ..., m)kk1i i1k B =[B- ]-: 1k : 22. C (x) E{[x u ]'B [x u ]} C C(x) tr[B ]a = - - + = + ii i iiai i iaii: C(x) = [x - u i ]'B[x - u ] + C + r[Bii ] = E{[ui - ui ]'Bi [ui -ui ]}iiiii x* p -Cx (x*) =0 : p = Cx (x) = C (x) . - . , , , . (ui) i = ui + Vi (i = 1, ... , m):Vi = (, ui i).i i i i i i E(u / ) = (I - A )u + A i -1(u / ) = -1+H i i i iA =( -1+H )- 1Hi i ii 1/ ni i h =H n = Hi / hi n = 1 :i) hi = i ,ii) n = . , = (1, ..., m) :X E(u / ) B[x - (u / )]pi= + (i = 1, ..., m)kk k-1i i i 23. , , :C (x) E[c(x;u/ ... )] 1 mp =C(x) {tr[(I A)B] tr[AB]} i i= + - i i +iCa (x) - tr[A (B B) ]= -i i ii i i V tr[A (B - ) ] = i. , Ai, . hi Cp (x) C(x) + tr[B ]ii i hi. * = px * -Ca (x*)expected price9.3 . (learningprocess) :T = t1 + t2 + (T - t1 - t2 ) , :t1 = learning time 24. t2 = (T - t1 - t2 ) = (h(o)) Gompertz:h = Qexp(-e-kt )Q(t1 ) (o) h = loq , :-ktdh(t )1Qt 111= keh(t )= k logdh(t )1 lim h(t1) = Qk = Q =