search for: a1m

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2008 Dec 11
2
Simplex function in R
...e solution for the set of linear equations: a + b + c = 5 a + b + 0c = 4 0a + b + c = 4 Solution - a feasible (and unique) solution is a=1, b=3, c=1. The following R code returns a feasible solution: A3M = matrix(c(1,1,0,1,1,1,1,0,1),nrow=3) b3M = matrix(c(5,4,4),ncol=1) A1M = matrix(c(1,0,0,0,1,0,0,0,1),nrow=3) b1M = matrix(c(10,10,10),ncol=1) AM = matrix(c(1,1,1),nrow=1) simplex(a = AM, A1 = A1M, b1 = b1M, A2 = NULL, b2 = NULL, A3 = A3M, b3 = b3M, maxi = TRUE) Case 2: Find any feasible solution for the set of linear equations a + b + c = 5 a + 0b +...
2012 Mar 21
1
How to do 2SLS in R
Hi List I want to carry out structural mode. Following Example l have taken from Basic Econometrics- Damodar Gujarati : Advertising intensity function: Ad/S = a0 + a1M + a2 (CD/S) + a3C + a4C2 + a5Gr + a6Dur – (1) Concentration function: C = b0 + b1 (Ad/S) + b2 (MES/S) -(2) Price-cost margin function: M = c0 + c1(K/S) + c2Gr + c3C + c4GD + c5(Ad/S) + c6 (MES/S) -(3) where Ad = advertising expense S = value of shipments C = four-fi...
2010 Dec 16
19
Hypervisor hangs on startup
Hi! We have a problem that the dom0 very often does not boot and hangs in the hypervisor - see screenshot. The last message is: (XEN) Dom0 has maximum 16 VCPUs (afterwards xen should overwrite the memory) We are using the xen kernel from kernel.org git. Kernel is 2.6.32.24-xen with Xen 4.0.1 Hardware is HP DL380. Is this a known problem? Any hints what could be the problem and how we can
2010 Dec 16
19
Hypervisor hangs on startup
Hi! We have a problem that the dom0 very often does not boot and hangs in the hypervisor - see screenshot. The last message is: (XEN) Dom0 has maximum 16 VCPUs (afterwards xen should overwrite the memory) We are using the xen kernel from kernel.org git. Kernel is 2.6.32.24-xen with Xen 4.0.1 Hardware is HP DL380. Is this a known problem? Any hints what could be the problem and how we can