The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Abraham Rueda Zoca - One of the best experts on this subject based on the ideXlab platform.
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almost Squareness and strong diameter two property in tensor product spaces
Revista De La Real Academia De Ciencias Exactas Fisicas Y Naturales Serie A-matematicas, 2020Co-Authors: Abraham Rueda ZocaAbstract:We study almost Squareness and the strong diameter two property in the setting of projective (symmetric) tensor product of Banach spaces. We prove that almost Squareness is stable by taking projective tensor products, providing non-trivial examples of ASQ projective tensor products of Banach spaces. Furthermore, we give sufficient conditions for a projective symmetric tensor product to have the strong diameter two property. This extend most of the previously known results and provide new examples of projective symmetric tensor product spaces with the strong diameter two property.
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almost Squareness and strong diameter two property in tensor product spaces
arXiv: Functional Analysis, 2018Co-Authors: Abraham Rueda ZocaAbstract:We study almost Squareness and the strong diameter two property in the setting of projective (symmetric) tensor product. We prove that almost Squareness is preserved by taking projective tensor product, providing non-trivial examples of ASQ projective tensor product spaces. Furthermore, we give sufficient conditions for a projective symmetric tensor product to have the strong diameter two property which extend most of the known results and provide new examples of such spaces with the strong diameter two property.
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unconditional almost Squareness and applications to spaces of lipschitz functions
Journal of Mathematical Analysis and Applications, 2017Co-Authors: Luis Garcialirola, Abraham Rueda ZocaAbstract:Abstract We introduce an unconditional concept of almost Squareness in order to provide a partial negative answer to the problem of existence of almost square dual Banach spaces. We also take advantage of this notion to provide some criteria of non-duality of some subspaces of scalar as well as vector-valued Lipschitz functions.
Dennis E Speliotis - One of the best experts on this subject based on the ideXlab platform.
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coercive Squareness and media noise in thin film magnetic recording media
Journal of Magnetism and Magnetic Materials, 1990Co-Authors: Dennis E SpeliotisAbstract:Abstract In the recent technical literature, several publications have reported the existence of a strong correlation between coercive Squareness (S∗) and media modulation noise (Nm) in thin film magnetic recording media. We measured several different thin film media and found that such a correlation between S∗ and Nm does not hold in general, even though it may exist for specific classes of alloys and microstructure.
Takashi Hikosaka - One of the best experts on this subject based on the ideXlab platform.
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perpendicular recording with high Squareness coptcro media
Journal of Magnetism and Magnetic Materials, 2001Co-Authors: Yoichiro Tanaka, Takashi HikosakaAbstract:Double layer perpendicular recording media employing highly square CoPtCrO recording layer with low noise granular structure and multi-layered [FeAlSi/C]n soft underlayer have been developed. Dynamic performance test revealed that the double layer CoPtCrO perpendicular media exhibited the high output signal and the high resolution recording performance at the same time. Signal decay test also indicated the superior thermal stability.
Wolfgang Knapp - One of the best experts on this subject based on the ideXlab platform.
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Machine tool calibration: Geometric test uncertainty depends on machine tool performance
Precision Engineering, 2009Co-Authors: Björn Bringmann, Wolfgang KnappAbstract:In order to show a sufficient geometric performance, every machine tool has to be calibrated geometrically before it may come into operation. The geometric machine errors have to be identified. They can afterwards be compensated either mechanically or numerically in the machine control. Machine tools are usually calibrated geometrically by performing a sequence of different measurements to identify single errors such as Squareness errors between linear axes, straightness errors, positioning errors etc. The uncertainty of such measurements is of course affected by the uncertainty of the measuring device under the given environmental conditions. Methods to describe such influences are widely known and applied. Other effects having an impact on the error parameters to be determined (e.g. Squareness errors) are dependent on the performance of the machine tool under test. Neglected geometric errors, hysteresis and thermal drift affect the measurement result. Such effects may be much more important contributors to the overall test uncertainty than the measurement uncertainty of the measuring device. In this paper the problem of error interdependencies leading to a worse test uncertainty is explained. The occurrence of such effects is shown with exemplary measuring results. A method for estimating the overall test uncertainty even for complex measurements is introduced. The dependence of the test uncertainty on the geometric machine performance is explained. ?? 2009 Elsevier Inc. All rights reserved.
Masoud Honarvar - One of the best experts on this subject based on the ideXlab platform.
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Feasibility of Using Digital Image Processing and Colorimetric Measurements to Estimate the Physicochemical Properties of Raw Cane Sugars
Sugar Tech, 2016Co-Authors: Mohammad Bahrami, Masoud Honarvar, K AnsariAbstract:Assessment of the physical properties of agricultural and food products has always been of major importance. The purpose of this study was to investigate the possibility of estimating physicochemical properties of raw cane sugars using digital image processing and colorimetric measurements. Various characteristics of raw cane sugars such as ash, sucrose, invert sugar, solution color, pH, starch, dextran, moisture and refractive index of some Iranian and imported raw cane sugar samples were examined. Additionally, the images of samples were captured by a flat scanner, and different morphological characteristics such as area, perimeter, Squareness and count number of crystal were determined using MATLAB software. In addition, the CIE color coordinates by a spectroradiometer with wavelength range of 380–780 nm were measured. Results demonstrated that there was a good correlation between certain morphological behaviors and some physicochemical properties of raw cane sugars. For example, some relationships between the area mean and dextran (r = 0.72), perimeter mean and dextran (r = 0.75) and Squareness and starch (r = 0.76) were found. Moreover, correlations between certain physicochemical parameters such as ash, sucrose, invert sugar, solution color, dextran, pH and refractive index and some CIE color coordinates values such as L*, a*, b*, C*, h, X, Y, Z, x and y were indicated. Determining the physicochemical properties of raw cane sugars appears feasible using digital image analysis technique.
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Measurement of Morphological Characteristics of Raw Cane Sugar Crystals Using Digital Image Analysis
2015Co-Authors: M E Bahrami, Masoud HonarvarAbstract:Raw cane sugar is one of the most important product in the sugar industry and is the main raw material for the white sugar production. Morphological and physical properties of this product might influence the final white sugar. For instance, the behavior during centrifugation, transport and storage is related to the characteristics of these crystals. The object of this study was to determine the morphological factors in raw cane sugar using digital image processing. For this purpose, two sets of imported and domestic raw cane sugars were collected and different factors related to the area size, perimeter, Squareness and crystal count were determined. The results showed that the mean area for the imported sets of raw sugars was 154.1994 pixel while for the domestic sets was 220.6249 pixel. This parameter reflects the size of crystals. Perimeter and Squareness characteristics and count of crystal in 0.5 g sample were also demonstrated. The results of this study demonstrated that digital image processing technique might be regarded as a useful way to determine the physical and morphological characteristics of different raw sugar crystals.
