scholarly journals An analysis of the feeder cattle enterprise on Iowa farms with the use of linear programming techniques

1969 ◽  
Author(s):  
James Roger Ahrenholz
1994 ◽  
Vol 45 (5) ◽  
pp. 489-496 ◽  
Author(s):  
L. R. Fletcher ◽  
P. M. Soden ◽  
A. S. I. Zinober

Author(s):  
Naima El Ghandour ◽  
Moussa Benaissa ◽  
Yahia Lebbah

The Semantic Web uses ontologies to cope with the data heterogeneity problem. However, ontologies become themselves heterogeneous; this heterogeneity may occur at the syntactic, terminological, conceptual, and semantic levels. To solve this problem, alignments between entities of ontologies must be identified. This process is called ontology matching. In this paper, the authors propose a new method to extract alignment with multiple cardinalities using integer linear programming techniques. The authors conducted a series of experiments and compared them with currently used methods. The obtained results show the efficiency of the proposed method.


2001 ◽  
Vol 38 (02) ◽  
pp. 407-420
Author(s):  
Henry W. Block ◽  
Tuhao Chen

Univariate probability inequalities have received extensive attention. It has been shown that under certain conditions, product-type bounds are valid and sharper than summation-type bounds. Although results concerning multivariate inequalities have appeared in the literature, product-type bounds in a multivariate setting have not yet been studied. This note explores an approach using graph theory and linear programming techniques to construct product-type lower bounds for the probability of the intersection among unions of k sets of events.


1969 ◽  
Vol 91 (3) ◽  
pp. 799-806 ◽  
Author(s):  
F. A. Leckie ◽  
R. K. Penny

Using the theorems of plasticity lower bound estimates of shakedown loadings have been calculated for a number of shell-like structures commonly found in the pressure vessel industry. These have been determined by making use of elastic solutions, already available, in conjunction with standard linear programming techniques. Combinations of loadings and temperatures have been considered with a view to illustrating how calculations of these types can help in making design decisions.


Geophysics ◽  
1984 ◽  
Vol 49 (10) ◽  
pp. 1781-1793 ◽  
Author(s):  
Vincent Richard ◽  
Roger Bayer ◽  
Michel Cuer

The aim of this paper is to use linear inverse theory to interpret gravity surveys in mining exploration by incorporating a priori information on the densities and data in terms of Gaussian or uniform probability laws. The Bayesian approach and linear programming techniques lead to the solution of well‐posed questions resulting from the exploration process. In particular, we develop a method of measuring the possible heterogeneity within a given domain by using linear programming. These techniques are applied to gravity data taken over the massive sulfide deposit of Neves Corvo (Portugal). We show how crude constraints on the densities lead to a first estimation of the location of sources, while further geologic constraints allow us to estimate the heterogeneity and to put definite bounds on the ore masses.


Geophysics ◽  
1992 ◽  
Vol 57 (2) ◽  
pp. 258-262 ◽  
Author(s):  
David L. Brumbaugh

The original seismic mis‐tie adjustment procedure (SMAP) is restricted to uniform grids of 2-D seismic lines. In many areas, uniform grids do not occur, especially with multiple‐vintage coverage. An alternative method is proposed still using linear programming techniques to simultaneously minimize the maximum error and absolute error sum, but extending the technique to handle any 2-D seismic grid orientation. Horizons can be treated individually or in combination, with certain restrictions. The original procedure also has some poorly imposed constraints. SAS/OR™ software improves upon the original SMAP results. A comparison is made between a 2-D seismic interpretation corrected with the new algorithm and a 3-D seismic interpretation covering the same area, showing an excellent correlation between the two structural pictures. 2-D seismic interpretation is still a viable tool, and improved maps can be made through this linear programming technique for minimizing mis‐ties.


Sign in / Sign up

Export Citation Format

Share Document