Showing papers in "Measurement in 1987"

TL;DR: In this paper, a sample holder for the measurement of the low-temperature thermal conductivity of very thin samples is described, which is based on a potentiometric principle.

TL;DR: The background to fiber optic sensing and some recent developments are reviewed in this article, which includes an assessment of developments in the field in various countries of the world, and some products are available to the industrial user.

TL;DR: In this paper, the thermal conductivity, thermal diffusivity, and emissivity of very thin electrically conducting and insulating films and foils are measured at bismuth films and cellulose acetate foils and results are represented.

TL;DR: An interferometer for planeness testing of technical surfaces is described and real-time interferometric evaluations of 4 in silicon wafers have been carried out.

TL;DR: The hardware and software concept of a multisensor-based intelligent signal transmitter which is equipped with an isolated 2-wire field bus which enables signal transmission, variation of parameters, selection of prefabricated signal processing routines and remote-controlled diagnostics is presented.

TL;DR: In this paper, a geometrical representation of a bounded error model has been proposed, where the measurement error is defined as an interval of variability of the error and the covariance matrix represents the reliability of the estimates themselves.

TL;DR: This paper examines briefly the state of the art of intelligent measurement on the basis of the proceedings of the IMEKO 1986 Symposium on the subject and identifies advances in computer-assisted measurement, data conditioning, measurement process control, measurement result output, and measurement data processing.

TL;DR: In this paper, a microdimension measurement system, using one-dimensional CCD as the sensor, was developed for measuring thin wire or slit, based on Fraunhofer's diffraction.

TL;DR: In this paper, a special opto-electronic cross-correlator with a silicon avalanche photodiode is presented, which can be used in displacement and distance measurement, robotics, time dispersion analysis in optical fibres, transient absorption spectroscopy, fluorescence decay measurement, lifetime-selective fluorescence detection, and in fluorescence signal suppression in Raman spectroscope.

TL;DR: In this paper, the authors used measurements of the absolute spectral responsivity of various Si photodiodes 10 mm in size, from different manufacturers, in the wavelength range from 250 nm to 1200 nm over several years.

TL;DR: In this article, the main methods of solving inverse problems are surveyed, and practical examples are given to show that different methods are effective in solving the inverse problem, as well as practical examples of different methods.

TL;DR: Examples of the application of intelligent measurement in clinical medicine, in particular, inferential measurement, the learning of patterns and measurement interpretation and its use in decision support in the total medical information system are described.

TL;DR: In this article, the effect of temperature gradients on the comparison accuracy of pyrometers was analyzed in view of the use of cylindrical blackbody cavities as transfer sources for comparison.

TL;DR: The main characteristics of an intelligent measuring instrument for electrical quantities are outlined, putting in evidence the role of intelligence.

TL;DR: The majority of CCD matrices available at present are characterized by non-square point grids as mentioned in this paper, and many problems to be solved in image processing require square point grids in order to obtain results of invariable positions.

TL;DR: The pipeline image processor produces real-time correlation fringes and allows rapid automatic evaluation of correlograms and on-line operation gives quantitative results after 2–3 min.

TL;DR: A computer analysis and decision system for heart sounds and an ARMA model was applied to identify the characteristics of normal subjects and three groups of patients with mitral stenosis, mitral regurgitation and uraemia, found to be satisfactory.

TL;DR: In this article, a new intracranial pressure transducer, based on the miniature pneumatic nozzle-flapper amplifier with negative feedback, is described, and the problem of steady-state accuracy of intracanial pressure measurement in relation to the stiffness of the transducers membrane and dura mater is discussed.

TL;DR: In this article, a new pulse method (subsecond experiment) for the measurement of thermal expansion at high temperatures is presented, in which the expansion of a long speciment is correlated to its temperature profile.

TL;DR: In this paper, the diameter of an image-transmitting optical fiber is measured by two laser beams at near-perpendicular incidence and the changes in the back-scattered intensity are detected and electronically processed to yield the change in diameter with an accuracy of 0.1 μm.

TL;DR: The auto-diagnosis system can recognise not only severe failures which require out-of-service instrument setting, but also slight failures simply affecting accuracy or not basic features; in the latter case, the instrument is set working in degraded conditions.

TL;DR: The number of test data is increasing and the time necessary to test the cars at different development stages is still too high, so the time needed by means of computer-aided testing (CAT) has to be decreased by at least the same amount.

TL;DR: It is demonstrated how special industrial measurement tasks can be solved by Image Analysis Systems and the concept of fractal dimension is applied to optical surface roughness measurements.

TL;DR: A microcomputer based development system for on-line analysis of intracardiac electrograms, recognition of arrhythmia and electrical stimulation therapy is described, which has been used mainly to distinguish sinus rhythm complexes from tachycardia complexes and to trigger an external stimulator if tachy cards are sustained.

TL;DR: In this article, an education method is proposed which is in good harmony with essential normal lectures, which does not lose the essence of lectures but improves education effects, and the practice of CAI, it must be explained.

TL;DR: In this paper, an interactive measurement procedure, used to perform the model identification of a multi-mass vibrating test rig, is discussed, and the objective of this secondary observation chain is the collection of additional information on the test rig dynamic behaviour, in order to improve the accuracy of the measurements carried by the principal observation device.

TL;DR: In this article, a non-linear, one-compartment mechanical lung model is used to identify the parameters of a nonlinear, nonlinear and one-component artificial ventilation system.