Verification of heuristic diagnostic knowledge by comparison with a causal/qualitative model

The kinetics of oxidation of alkenes by thallic sulphate in aqueous solutions, involving the two reaction steps-the hydroxythallation and the dethallation - was studied, and the effect of salts on the kinetics was examined; this made it possible to specify more precisely the reaction mechanism and to suggest a qualitative model of the reaction coordinate. It was found that in homogeneous as well as in heterogeneous reaction conditions, the reaction can be accelerated appreciably by adding tetraalkylammonium salts. These salts not only operate as catalysts of the phase transfer, but also exert a significant kinetic effect, which can be explained with a simplification in terms of a stabilization of the transition state of the reaction.

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Large qualitative models of complex chemical and bioengineering processes

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19912107 ◽

1991 ◽

Vol 56 (10) ◽

pp. 2107-2141 ◽

Cited By ~ 5

Author(s):

Mirko Dohnal

Keyword(s):

Case Studies ◽

Chemical Process ◽

Ad Hoc ◽

Chemical Reactor ◽

Theoretical Background ◽

Qualitative Model ◽

Complex Chemical ◽

Practical Applications ◽

Qualitative Models ◽

Decomposition Principle

Qualitative model is a theoretical background of commonsense. Complex qualitative models can have prohibitively many solutions (qualitative states). Therefore a qualitative analogy of such classical quantitative tools as e.g. the decomposition is developed. Practical applications of decomposition principle is nearly always ad hoc. Therefore two case studies are presented in details, a chemical process (mixer, chemical reactor, separator) and an anaerobic fermentor.

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Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity

Nanophotonics ◽

10.1515/nanoph-2020-0305 ◽

2020 ◽

Vol 9 (15) ◽

pp. 4505-4518

Author(s):

Sarath Raman Nair ◽

Lachlan J. Rogers ◽

Xavier Vidal ◽

Reece P. Roberts ◽

Hiroshi Abe ◽

...

Keyword(s):

Room Temperature ◽

Gain Medium ◽

Stimulated Emission ◽

Nitrogen Vacancy ◽

Qualitative Model ◽

Seed Laser ◽

Laser Threshold ◽

Cavity System ◽

Emission Changes ◽

532 Nm

AbstractLaser threshold magnetometry using the negatively charged nitrogen-vacancy (NV−) centre in diamond as a gain medium has been proposed as a technique to dramatically enhance the sensitivity of room-temperature magnetometry. We experimentally explore a diamond-loaded open tunable fibre-cavity system as a potential contender for the realisation of lasing with NV− centres. We observe amplification of the transmission of a cavity-resonant seed laser at 721 nm when the cavity is pumped at 532 nm and attribute this to stimulated emission. Changes in the intensity of spontaneously emitted photons accompany the amplification, and a qualitative model including stimulated emission and ionisation dynamics of the NV− centre captures the dynamics in the experiment very well. These results highlight important considerations in the realisation of an NV− laser in diamond.

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Higher Education Leadership Competencies: Quantitatively Refining a Qualitative Model

Journal of Leadership & Organizational Studies ◽

10.1177/1548051809348018 ◽

2010 ◽

Vol 17 (1) ◽

pp. 61-70 ◽

Cited By ~ 11

Author(s):

Zachary A. Smith ◽

Mimi Wolverton

Keyword(s):

Higher Education ◽

Education Leadership ◽

Leadership Competencies ◽

Higher Education Leadership ◽

Qualitative Model

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Rapid One-Joint Movements: A Qualitative Model and its Experimental Verification

Stance and Motion ◽

10.1007/978-1-4899-0821-6_24 ◽

1988 ◽

pp. 261-270 ◽

Cited By ~ 2

Author(s):

R. M. Abdusamatov ◽

S. V. Adamovich ◽

M. B. Berkinblit ◽

A. V. Chernavsky ◽

A. G. Feldman

Keyword(s):

Experimental Verification ◽

Qualitative Model

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Assessing the impact of library instruction on studio-based research: developing a qualitative model

Art Libraries Journal ◽

10.1017/alj.2017.7 ◽

2017 ◽

Vol 42 (2) ◽

pp. 80-85 ◽

Cited By ~ 2

Author(s):

Ellen Petraits

Keyword(s):

Rhode Island ◽

Design Research ◽

Qualitative Assessment ◽

Library Instruction ◽

Qualitative Model ◽

Art And Design ◽

Library Research ◽

Fostering Reflection ◽

The Impact ◽

The Coordinator

Throughout the year, research and instruction librarians at Rhode Island School of Design (RISD) instruct students in ways to use the library for studio-based research. At the end of each semester, librarians attend studio critiques for these classes to see the finished work and participate in the critique. These visits are opportunities to look for and reflect upon the presence of research and the impact of concepts taught during library research workshops on the finished presentations and artworks. The coordinator of graduate library instruction created a qualitative tool to assess the evidence of student learning within the studio critique. Its use is cultivating a culture of art and design research within the library and throughout campus by fostering reflection and discussion about the value of qualitative assessment.

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The application of evolution strategies to disordered structures

Journal of Applied Crystallography ◽

10.1107/s0021889899006597 ◽

1999 ◽

Vol 32 (5) ◽

pp. 902-910 ◽

Cited By ~ 3

Author(s):

Karsten Knorr ◽

Fritz Mädler

Keyword(s):

High Pressure ◽

Maximum Entropy ◽

Electron Density ◽

Structural Model ◽

Evolution Strategies ◽

Qualitative Model ◽

Density Distributions ◽

Disordered Structures ◽

Structure Factors ◽

Complex Anions

Evolution strategies are applied to refine structural fragments, like molecules or complex anions, of orientationally disordered crystals. Optimal geometric embedding of the fragments into electron density distributions, resulting from maximum-entropy (ME) reconstructions, are performed. The evolution paradigm is found to be also applicable for the refinement against structure factors, for which the structural model is carefully selected from the ME densities. Suitably modified, the method is used successfully to compute reorientation pathways and to predict disordered high-pressure configurations in a non-classical qualitative model.

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