Ibrahim Serroukh

Autonomous University of Queretaro · Facultad de Ingeniería

The traditional teaching and learning method are not working according to Donald Bligh findings in his book titled what is the Use of Lectures.). It makes the Lecturer/Tutor in charge and relies on economic assessment in all teaching and learning resources. Such method makes student passive learners. The modern teaching and learning make learners i...

Teaching and learning is an old methodology that in existence for many thousands years ago. However, higher education is in existence for six hundred years without any major change. We measure education in the twenty first century by how many students have graduated. Such measure does not relate the real life with education, even when we try to rel...

Teaching and learning is an old methodology that in existence for many thousands years ago. However, higher education is in existence for six hundred years without any major change. We measure education in the twenty first century by how many students have graduated. Such measure does not relate the real life with education, even when we try to rel...

A method for studying the one-dimensional heat transfer process within an inhomogeneous spatially bounded medium in the presence of an external heat source is presented. It is based on a recently introduced technique for solving problems related to Sturm–Liouville equations that consists in the representation of solutions in the form of a spectral...

A real time self–adjusting neuro control scheme for optical fiber drawing is presented in this paper. The fiber presents high and low frequency variations in the obtained diameter, being these last ones caused by variations in the preform diameter and the distribution of the molecular weight which affects the rheologic behavior during the drawing p...

A real time self-adjusting neuro control scheme for optical fiber drawing is presented in this paper. The fiber presents high and low frequency variations in the obtained diameter, being these last ones caused by variations in the preform diameter and the distribution of the molecular weight which affects the rheologic behavior during the drawing p...

The measurement of small displacements on the nanometric scale demands metrological systems of high accuracy and precision. In this context, interferometer-based displacement measurements have become the main tools used for traceable dimensional metrology. The different industrial applications in which small displacement measurements are employed r...

In Photoacoustic experiments and low frequency Photodiode applications, Phase sensitive detection is one of the basic operations performed by a lock-in amplifier. Regrettably, it is common to use only basic functions of those devices, in spite of their high cost. The objective of this research is to show the results that were obtained from the deve...

Greenhouse crop production, compared with field production, yields greater quality and quantity and higher prices in any period of the year. These advantages are related to the climatic conditions in which crop grows and the specific climatic conditions of each region Thus, it is important to have a system of control to maintain the values of clima...

Greenhouse crop production, compared with field production, yields greater quality and quantity and higher prices in any period of the year. These advantages are related to the climatic conditions in which crop grows and the specific climatic conditions of each region Thus, it is important to have a system of control to maintain the values of clima...

A complete characterization of Cu–steel impact welded were made using photothermal radiometric (PTR) spectroscopy, scanning electron microscopy (SEM), microhardness, and X-ray diffraction (XRD) in order to study the changes in the structural, metallurgical, and thermal properties of Impact Welding Zone (IWZ) and the Impact Affected Zone (IAZ) after...

An appropriate setting of the OTDR can help to improve the calibration reducing the uncertainty of measurements. We present some criterions for setting the Optical Time Domain Reflectometer (OTDR) for its distance scale calibration by means of a Recirculting Delay Line (RDL). The evaluation of some parameters such as location of the event, span of...

The principle purpose of this work is to providing some general analysis and interpretation in both theory and techniques concerning high accuracy of the thin metallic wire diameter measurement. The closest estimation of the magnitude requires understanding and analyzing the interaction between light and matter (wire). The wires diameter we re conc...

An image processing algorithm, mainly based on morphological enhancement and segmentation, is developed and applied to optical microscope images of transverse cuts of fabric filaments, to retrieve useful shape characteristics. Adaptive filtering and non-linear fitting algorithms are also applied. Computer generated noisy images are used to estimate...

The symmetry concerning the fabric pattern is not always suitable for the quality that we expected from fabric textile. The moiré effects produced by a periodic structure may be caused by various and diverse factors as folds, lines, etc. The defect that we are concern is bright and dark fringes appearing in the Nylon Fabric are viewed with necked e...

The accuracy and precision of the thin wires still requiring special attention. Both theoretical and experimental studies together may give closest approximation to the "real" value. Concerning the optical technique of measurement, perhaps one may analyze more in detail the interaction between light and matter (wire) which can lead to a simple math...

Laser diffraction is a robust and precise technique for measuring wire diameters. However, classical Fraunhofer diffraction formulas are inappropriate for determining the size of three-dimensional objects. Babinet's principle (from classical diffraction theory) allows the use of such formulas only for angles of diffraction tending to zero. In pract...

The purpose of this paper is to improve the metallic wire diameter measurement. The size of some thin wires and slits has been achieved using the spectrogoniometer which represents good alternative system of detection. The fact that, the technique of measurement may be regarded as bringing more calibrated diameter. Since it provides wide range of d...

Diffraction waves by a thin cylindrical wire are treated by two measurement techniques to inspect the size of metallic wires. The precision of the measurement for both diffraction and interferometry techniques is about 0.02. Currently it seems that laser diffraction is the best technique to use for diameter gauging. It offers a great stability adva...

The laser diffraction is a robust and precise technique to monitor wire diameters in-line. However, classical Fraunhofer diffraction formulas are not appropriate for 3-dimensional object size determination. The Babinet's principle allow to use such formulas only for angles of diffraction that tend to zero. A real diffraction measurement necessarily...

The laser diffraction is a robust and precise technique to monitor wire diameters in-line. However, classical Fraunhofer diffraction formulas are not appropriate for 3D object size determination. The Babinet's principle allow to use such formulas only for angles of diffraction that tend to zero. A real diffraction measurement necessarily takes a fi...

Several simple models based on the geometrical theory of diffraction have been developed to be used in automatic control diameter of wires by optical diffraction, within the range of 10-200 mu m. The experimental diffraction patterns are analyzed by Kriging method in order to estimate with good accuracy the location and the uncertainty of each mini...