Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Expert structure

To parameterize the reasons for information instability that appear in problems of the remote sounding of the environment, we consider two types of models. The first refers to the class of expert structures, which reflects expert opinion. Expert models are ranged according to their efficiency. Each of these models, M, is characterized by structure M and complexity C M = M, C. The quality of the model M is assessed either by expert criterion r or by objective criterion (. Let A( ) be the multitude of arguments present in the model s structure, the best by criterion (, and A((,t) the multitude of arguments included in the model s structure, the best by both criteria ( and r. Then, the simplest empirical component of knowledge is the parameter ... [Pg.322]

The AEBBL SW ains on the PC. The software uses a menu structure, easy to use by a non expert operator. AEBIL has been designed to operate in DOS environjnent in order to enhance its real-time operation capabilities. The user-interface has been developed so as to permit a window-driven operation. [Pg.70]

Two systems will be introduced below on the one hand the DENDRAL system for automatic structure elucidation [25], which was one of the first expert systems on the other hand the EROS system [26], which can be used for simulating reactions. [Pg.480]

J. P. Hickey, A. Aldridge, D. R. May Passino, A. M. Frank, Expert System Predicts Aquatic Toxicityfrom Contaminant Chemical Structure,NMoa-A Fisheries Research Center-Great Lakes, U.S. Fish and Wildlife Service, Ann Arbor, Mich., 1991 Ibid., Drug Information Journal 26, 487 (1992). [Pg.259]

Crystallisation. The ultimate in purification of proteins or nucleic acids is crystallisation. This involves very specialised procedures and techniques and is best left to the experts in the field of X-ray crystallography who provide a complete picture of the structure of these large molecules. [A. Ducruix and R. Gieg6 eds. Crystallisation of Nucleic Acids and Proteins A Practical Approach, 2nd Edition, 2000,... [Pg.502]

The chapters presented by different experts in the field have been structured to develop an intuition for the basic principles by discussing the kinematics of shock compression, first from an extremely fundamental level. These principles include the basic concepts of x-t diagrams, shock-wave interactions, and the continuity equations, which allow the synthesis of material-property data from the measurement of the kinematic properties of shock compression. A good understanding of these principles is prerequisite... [Pg.355]

Validation studies in manufacturing businesses and discussion with experts led to the view that knowledge used to define p, gp, tp and. Vp, could be structured such that may be formulated as ... [Pg.48]

The enormous amount of research at the interface between physical and structural chemistry has been expertly reviewed recently by Schmalzried in a book about chemical kinetics of solids (Schmalzried 1995), dealing with matters such as morphology and reactions at evolving interfaces, oxidation specifically, internal reactions (such as internal oxidation), reactions under irradiation, etc. [Pg.46]

It is an unfortunate fact that many students and indeed design engineers are reluctant to get involved with plastics because they have an image of complicated materials with structures described by complex chemical formulae. In fact it is not necessary to have a detailed knowledge of the structure of plastics in order to make good use of them. Perfectly acceptable designs are achieved provided one is familiar with their perfonnance characteristics in relation to the proposed service conditions. An awareness of the structure of plastics can assist in understanding why they exhibit a time-dependent response to an applied force, why acrylic is transparent and stiff whereas polyethylene is opaque and flexible, etc., but it is not necessary for one to be an expert... [Pg.2]

The paired comparisons method (NUREG/CR-3688) is a structured expert judgment method in which human errors are compared in pairs. By combining the judgments of the group of experts, the errors arc arranged in order of likelihood of occurrence, of the human errors considered, they can be used as "anchor points list. Documentation requirements are given in Table 4.5-8. [Pg.178]

Embry, D. E. et al., SLIM-MAUD an Approach to Assessing Human Error Probabihues Using Structured Expert Judgment, BNL, March 1984. [Pg.470]

These early observations on the correlation of structure and pharmacological action in the morphine group have been greatly extended as a result of chemical, pharmacological and clinical work done under the auspices of the American National Committee on Drug Addiction. In addition to numerous papers, contributed by experts serving this Committee, to chemical and pharmacological journals, two important reports have been published —... [Pg.260]

Some effective team structures distinguish between a core group and a standing advisory group. This can be helpful in assuring consistent feedback from key people (such as facility-based safety experts) who may be unable to participate in regular working sessions but whose input and endorsement will be critical to success. [Pg.54]

Embrey, D. E., Kirwan, B., Rea, K., Humphreys, P., Rosa, E. A. (1984). SLIM-MAUD. An approach to Assessing Human Error Probabilities Using Structured Expert judgment Vols. I and II. Washington, DC NUREG/CR—3518 US Nuclear Regulatory Commission. [Pg.369]

The main goal of the Encyclopedia is to provide up-to-date information on the molecular mechanisms of drug action. Leading experts in the field have provided 159 essays, which form the core structure of this publication. [Pg.1510]

After the somewhat tedious parametrization procedure presented above you are basically an expert in the basic chemistry of the reaction and the questions about the enzyme effect are formally straightforward. Now we only want to know how the enzyme changes the energetics of the solution EVB surface. Within the PDLD approximation we only need to evaluate the change in electrostatic energy associated with moving the different resonance structures from water to the protein-active site. [Pg.167]

The task in this study focused on enhancing the flexibihty and reducing the weight of a bullet proof vest (e.g. wearing it as a vest under tuxedos or evening dresses). Document analysis and expert consultation revealed that a number of specific structures... [Pg.203]

The expert did not reason in a straightforward way from macro to micro, but alternated between different alternative solutions (mats glued together, a single mat, threads, fibres, other materials) and alternative reasoning for finding solutiorrs by considering new relatiorrs between properties and structures. [Pg.204]


See other pages where Expert structure is mentioned: [Pg.810]    [Pg.810]    [Pg.38]    [Pg.737]    [Pg.960]    [Pg.45]    [Pg.516]    [Pg.529]    [Pg.530]    [Pg.535]    [Pg.535]    [Pg.235]    [Pg.509]    [Pg.2420]    [Pg.17]    [Pg.131]    [Pg.201]    [Pg.477]    [Pg.176]    [Pg.178]    [Pg.413]    [Pg.425]    [Pg.154]    [Pg.155]    [Pg.240]    [Pg.313]    [Pg.375]    [Pg.885]    [Pg.768]    [Pg.791]    [Pg.64]    [Pg.109]    [Pg.204]    [Pg.204]   
See also in sourсe #XX -- [ Pg.304 , Pg.305 ]




SEARCH



Expert system chemical structure prediction

Expert systems quantitative structure-activity relationships

Rule-based expert system structure

Structures Analysis Expert System

© 2024 chempedia.info