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Cartesian - DOAJ

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Last Updated: 03 September 2022

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MEIoT 2D-CACSET: IoT Two-Dimensional Cartesian Coordinate System Educational Toolkit Align with Educational Mechatronics Framework

The education sector has made pioneering and technological advances to enhance the educational experience by designing innovative and technological solutions to enhance the education landscape. This paper discusses the incorporation of IoT technology in the Two-Dimensional Cartesian Coordinate System Educational Toolkit's to transform it into MEIoT 2D-CACSET, which includes educational mechatronics and the IoT. The Educational Mechatronics Conceptual Framework is expanded to include the virtual environment, which supports knowledge construction in virtual concrete, virtual graphic, and virtual abstract terms.

Source link: https://doi.org/10.3390/s22134802


An Advanced TRACE Modeling Approach: Automatic Connection of 3D Cartesian and Cylindrical VESSEL Components in Integral Plant Models

To properly describe the 3D Thermal-Hydraulic reactions occurring inside the Reactor Pressure Vessel and the core, the best estimate system thermal-hydraulic codes in the nuclear engineering industry, e. g. , TRACE, RELEAP3D, CATHARE-3, etc. , were expanded with 3D coarse-mesh components to properly represent the 3D Thermal-Hydraulic reactions occurring within the Reactor Pressure Vessel and the core. So, the TRACE code is armed with a Cylindrical VESSEL and a Cartesian VESSEL. Due to the lack of nodalization between the two VESSELs, the analyst must perform repetitive and error-prone work establishing the cell-to-cell junctions and their TH parameters. The investigation of coolant mixing for an academic case and the AP1000 reactor reveal these new capabilities of TRACE.

Source link: https://doi.org/10.3390/en15124384


Performance of a solution of the direct geodetic problem by Taylor series of Cartesian coordinates

In view of its practical use, a well-known solution method suitable for low eccentricities, which uses differential equations in Cartesian coordinates and Taylor series extensions of these coordinates, is improved. In the present case, the solution method's formulas are simplified. A experiment of this method using extensive test results obtained on a biaxial earth ellipsoid shows its reliability and usability for distances of any length. Based on the convergence behavior of the series of test results, a truncation criterion for the series expansions is established, taking into account accuracy requirements of the coordinates. In addition, a procedure is shown that regulates the truncation of the series expansions by accuracy standards that must be determined in the specific case. However, the proposed solution method proves to be much slower than another current biaxial ellipsoids's, making it more suitable for triaxial ellipsoids.

Source link: https://doi.org/10.1515/jogs-2020-0127


Irreducible Cartesian Tensor Analysis of Harmonic Scattering from Chiral Fluids

Multiple Symmetry principles of various forms are revealingly embedded in an analysis focusing on third harmonic scattering, a recent focus of nonlinear optics research in chiral media. The ability of chiral scatterers to demonstrate differential response is determined by their intrinsic morphological symmetry. The response tensors' synchrony in the expression of the response allows quantitative evaluation of boundary values for experimentally measurable properties, including circular intensity differences.

Source link: https://doi.org/10.3390/sym12091466


Research Article. Geodesic equations and their numerical solutions in geodetic and Cartesian coordinates on an oblate spheroid

The initial value problem on an oblate spheroid is regarded as an initial value problem and is solved numerically using both geodetic and Cartesian coordinates. By means of differential geometry analysis, geodesic equations can be constructed. In order to determine the method's effectiveness in each coordinate system, an extensive database of geodesics is used. The results for the direct geodesic problem can be compared to Karney's method, which is also valid.

Source link: https://doi.org/10.1515/jogs-2017-0004


Geodesic equations and their numerical solution in Cartesian coordinates on a triaxial ellipsoid

A new precise analytical technique and a new numerical method of converting Cartesian coordinates of a point on a triaxial ellipsoid are demonstrated. The direct geodesic problem on a triaxial ellipsoid is referred to as an initial value problem and is solved numerically in Cartesian coordinates. At any point along the geodesic, the solution gives Cartesian coordinates and the angle between the line of constant u03bb and the geodesic. In order to prove the numerical method for the geodesic problem's validity, an extensive database of geodesics is used.

Source link: https://doi.org/10.1515/jogs-2019-0001


Analytical and numerical methods of converting Cartesian to ellipsoidal coordinates

Two scientific and two numerical methods of converting Cartesian coordinates of a point in space are given in this volume. A new exact analytical technique is introduced after marginally altering a well-known exact analytical device. Also, two commonly used numerical techniques, which were specifically developed for points on a triaxial ellipsoid's surface, have been generalized to points in space. We conclude that the generalized Panou and Korakitisu2019 numerical method, starting with approximate values from the new exact analytical method, is the most accurate in terms of the resulting ellipsoidal coordinates.

Source link: https://doi.org/10.1515/jogs-2020-0126


Two-Dimensional Cartesian Coordinate System Educational Toolkit: 2D-CACSET

Engineering education has benefited from the use of modern technology, allowing students to acquire essential Science, Technology, Engineering, and Mathematics related topics through hands-on experiences. However, most of the time, such kitsu2019 knowledge level requires understanding basic concepts that are not always appropriate for the student. The Cartesian Coordinate System, an essential tool for every engineering, from graphing to data processing in robotics and control applications, and beyond, is a key concept in engineering. This paper explores the creation and implementation of a two-dimensional representation as the first step to develop spatial thinking. Knowledge can be obtained in concrete, graphical, and abstract dimensions, according to the Educational Mechatronics Conceptual Framework. Three instructional designs were created for this paper using the 2D-CACSET and the EMCF to learn about coordinate axes, quadrants, and a point in the CCS.

Source link: https://doi.org/10.3390/s21186304


Socratic and Cartesian Personae: Undismembering and Liquidation

The essay investigates two individuals: Socrates is portrayed by Plato and Descartes as the narrator of the Discourse on Methods and Meditations. Descartes claims to have overcome ignorance by cutting down complex and specific parts of a problem, enabling a self-conscious yet impersonal subject that comprehends and controls objects.

Source link: https://doi.org/10.1515/opphil-2022-0206


A Cartesian Genetic Programming Based Parallel Neuroevolutionary Model for Cloud Server’s CPU Usage Prediction

These applications require cloud data centers to handle massive volumes of workloads. As a result, the data centers consume considerable amounts of electrical energy, and a significant amount of data center electrical power comes from fossil fuels. To get by with this huge problem, an adaptable resource utilization scheme of cloud data center resources is vital. The adaptive system will determine the resource usage and then adjust the allocation accordingly. The adaptive system will monitor the usage of resources and then adjust the budget accordingly. Estimating cloud resource utilization estimation is a two-fold challenging challenge. Several machine learning systems have estimated cloud resources, of which artificial neural networks have shown improved results. We present a Cartesian genetic programming neural network in this paper. The Bitbrains data center's resource utilization traces are used to validate the CGPNN and compare results with machine learning algorithms from the literature on the same dataset.

Source link: https://doi.org/10.3390/electronics10010067

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions