# 'Divide 720' presentation slideshows

## Mathsercise-C

Mathsercise-C. Ratio & Fractions. Ready?. Here we go!. Share £720 in the ratio 5:1. Question 2. 5 + 1 = 6. 720 ÷ 6 = £120. Add the parts of the ratios together to find out how many “parts” there are. Check the total values add back to the original amount!.

By Pat_Xavi
(225 views)

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## 720

A szén biogeokémiai körforgása. ( 372 ppm ). (0.12ppm). (1.5ppm). CO 2. CO. CH 4. CO 2. 720. 0.2. 4. Folyók. Biomassza. 3. nCO 2 + nH 2 O  (CH 2 O)n + nO 2. Oldott 0.6. 1000. Oldott szerves. Élő. 560. Biomassza. HCO 3 - /CO 3 2-. Elhalt. 37 400. 1200. Fosszilis

By samuel-hodge (96 views)

## CIS 720

CIS 720. Invariant Based Methodology. Producer/consumer problem. co Producer: Consumer: do true  do true  produce pdata buf = pdata cdata = buf; consume cdata

By cecile (131 views)

## CIS 720

CIS 720. Replication. Replica Management. Three Subproblems. Your boss says to you, “Our system is too slow, make it faster.” You decide that replication of servers is the answer. What do you do next? What are the questions that need to be answered? Where to place servers?

By lane (127 views)

## CIS 720

CIS 720. Concurrency Control. Locking. Atomic statement Can be used to perform two or more updates atomically Th1: …. < x = x + 1; y = z>;……. Th2:………….<m = m + 1;….>;……. Transactions. A database system is a set of shared data objects

By asis (112 views)

## CIS 720

CIS 720. Correctness of Concurrent Programs. i := 1 max := A[1] do i < n  i = i + 1 if (max < A[i]) max = A[i] od. Concurrency rule.

By loring (90 views)

## CIS 720

CIS 720. Passing the Baton Technique. Cigarette Smokers Problem. Three smoker processes, one agent Each smoker needs 3 ingredients: tobacco, paper, match 1st smoker has tobacco, 2 nd smoker has paper 3 rd smoker has match

By job (195 views)

## CIS 720

CIS 720. Lecture 2. Concurrency. …shared variable declaration…. …shared variable initialization… co P 1 // P 2 // P 3 // P 4 oc. Execution of P 1 … P 4 starts concurrently and the co-oc statement completes when all blocks have completed execution. Banking System.

By sissy (87 views)

## CIS 720

CIS 720. Asynchronous Message Passing. Asynchronous message passing. Send is non-blocking Modeling a channel c: Two variables: sent c , recv c Queue. Example. P1: x = 0; send(x,ch1); receive(x,ch2); P2: y = 2; send(y,ch2); receive(y,ch1). Computing the minimum value.

By abena (119 views)

## CIS 720

CIS 720. Message Passing. Message passing systems. Send statements Receive statements. Process naming. P ! m ( para_list ): send message m with parameters para_list to P. send(m( para_list , P)

By awen (117 views)

## CIS 720

CIS 720. Mutual Exclusion. Critical Section problem. Process i do (true) entry protocol; critical section; exit protocol; non-critical section od. Correctness. Mutual exclusion: at most one process at a time is executing its critical section

By zlhna (113 views)