One of the fascinating things about multiple criteria decision making (MCDM) is the degree to which the contributions that have built the field have come from all over the world. In this paper the international nature of the authorships of the 1216 refereed journal articles published on MCDM between 1987 and 1992, and the journals in which they have appeared, is examined. Also, an analysis of the 217 books and 31 journal special issues that have been published on MCDM, and 143 conferences that have been held on MCDM since the inception of the field, is similarly conducted. The paper concludes with a conference organizer, author and special issue guest editor index.

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This peper was prepared for presentation atthe 1986 lADC/SPE Drilling Conference held in Dallas, TX, FebruaW ID-12, 1986. Thie paper was aeleclad for preaerltationby an IADCLSPEProgram Committee followingreview of informationcontained In an abstractsubmittedby the autfror(s).Contents of the papar, as presentad, have not been reviewad by the 60.Sefy of Petroleum Engineera or InternationalAseocia:.m of Drilling Contrsc:ora&ndare subject to correctionby !he author(a).The matcxial,as presented, doas not necessarily reflect any positionof the IADC; r SPE, itsof. ficere, or members. Papers presented al lADC/SPE meetings are subject to publicationby Editorial Committees of the IADC and SPE. Permissionto copy la restrictedto an abstract of oot more than 300 words. Illustrationsmay not be copied. The abstrsct ehouldcontain mnspicuous acknowledgment of where and bv whom the oaoer is Dreaented. Write Publications Manager, SPE, ABSTRACT Thie paper presents an analytical model that has succeeafully predicted the inclination directional behavior of rotary drilling bottomhole assemblies, including aeaemblies that contain bent subs and downhole motors. The model has been installed as part of the Engineering Simulator for Drilling (ESD), and ccmbinea the effects on directional behavior of bottomhole assembly configuration, hole geometry, rock drillability, bit type and operating parameters such as bit hydraulics, weight-on-bit and rotary speed. The model combines previous work dealing with bottomhole aasembly analysis and bit mechanics (including side-cutting behavior), with original work defining the manner by which bits directionally penetrate.The model's computation echeme depends on a microcode version of a finite element bottomhole assembly behavior program running on an array processor. The system provides solutions of the finite element routine every one to aix seconds. Solutions are required at this frequency in order to obtain stable directional predictions at 30 times faster than real time.The paper also shcws that comparisons of the model results with field data are good in areas where formation affects are benign. Comparisons of model predictions with field reeults in areas of significant formation directional affects are also shown. These comparison are useful in quantifying the effect of the dip and strike on directional behavior, and in defining areaa where future work is needed._References_and illustrations at end of paper. Q&a"""

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