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1421
Accurate Algorithms for Spatial Operations on the Spheroid in a Spatial Database Management System
Published 2021-05-01“…It is well known that both objectives are impossible to achieve by means of the traditional approach using local mathematical projections and Cartesian coordinates. This paper demonstrates in a quantitative methodological way that most of the spatial analysis software products make important deviations in calculations regarding to geodesics, being the users unaware of the magnitude of these inaccuracies, which can easily reach meters depending on the distance. …”
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1422
Effective role of mineral oil and biological nanomaterial on thermal energy influenced by magnetic dipole and nanoparticle shape
Published 2023-02-01“…The concept of boundary layer was adopted to derive the physical problem in Cartesian coordinates, with results in the form of coupled partial differential equations (PDEs). …”
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1423
An improved experimental-theoretical method for calculating the particle trajectory in a pneumatic separating channel
Published 2018-06-01“…At the third stage, the system of differential equations of particle motion in a pneumatic separating channel relative to a Cartesian coordinate system is made and their trajectories are calculated. …”
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1424
RME-based local instructional theory for translation and reflection using of South Sumatra dance context
Published 2023-06-01“…This study produced a learning trajectory with three activities include: the students watched a dance video to describe the dancer’s’ positions in relation to floor tiles; the students were asked to determine the starting points of the dancers in Cartesian coordinates to learn concepts; and the students developed a formal concept based on their own knowledge.…”
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1425
A New Method of Quantifying the Complexity of Fractal Networks
Published 2022-05-01“…In this paper, we introduce a new method for quantifying the complexity of a network based on presenting the nodes of the network in Cartesian coordinates, converting to polar coordinates, and calculating the fractal dimension using the ReScaled ranged (R/S) method. …”
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1426
Design, Assembly and Control of a Differential/Omnidirectional Mobile Robot through Additive Manufacturing
Published 2024-02-01“…In this sense and based on Lyapunov’s method, a low-level controller is developed to control the angular speed of the wheels to a desired angular speed, and a medium-level controller controls the robot’s attitude to follow a desired Cartesian trajectory. Finally, the control strategies are implemented in both prototype configurations, and through experimental results, the theoretical analysis and the construction of the mobile robot are validated.…”
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1427
Axisymmetric non-planar slicing and path planning strategy for robot-based additive manufacturing
Published 2024-05-01“…The algorithm is based on two coordinate systems, the Cartesian coordinate system {c} and a slicing coordinate system {s}. …”
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1428
Real - Time Orbit Determination of Low Earth Orbit Satellites Using Radar System and SGP4 Model
Published 2003-03-01“…To cope with this problem, we set state vector osculating to mean equinox and true equator cartesian elements with coordinate transformation. …”
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1429
Modeling Effects of Heated Waste Water Discharge Rate on the Thermal Plume Pattern and Temperature at the Wastewater Discharge Site
Published 2018-08-01“…The model wasrun for two years to reach a steady state employing a Cartesian grid (40 × 120), five sigmalevels from the surface to the bottom, meteorological data, main components of the tide (O1,K1, M2, S2), and information related to the heated wastewater discharge rate and temperatureof water body. …”
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1430
Comparison of Epistemological system's with Methodological Benchmarks in Spatial Planning
Published 2020-06-01“…Research findings show that the concept of rationality in spatial planning is wider than its Cartesian meaning, and postmodern relativists attribute classical rationality to total rationality. …”
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1431
Warehouse Drone: Indoor Positioning and Product Counter with Virtual Fiducial Markers
Published 2022-12-01“…The output data are the cartesian position and yaw angle. All input and output data required for supervised learning in the simulation environment were collected along different random routes. …”
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1432
Dirichlet-Neumann problem for the partial differential equations with deviation over the space argument
Published 2021-07-01“…Dirichlet-Neumann problem for the typeless high order partial differential equation with deviating over the space argument is studied in the domain, which is the Cartesian product of the segment $(0,T)$ and the unit circle $\Omega=\mathbb R/(2\pi \mathbb Z)$. …”
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1433
Philosophical-mystical analysis of space in poetry and painting
Published 2022-05-01“…This approach to language and literary theory has an essential relation to Cartesian subjectivism, which is based on the separation of the mind from the object, in contrast to Heidegger's improvisation of man-in-the-world and the ontology of language, as well as the intersection of man and world in Merleau-Ponty's body phenomenology. …”
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1434
Numerical investigation of thermal enhancement using MoS2–Ag/C2H6O2 in Prandtl fluid with Soret and Dufour effects across a vertical sheet
Published 2023-07-01“…The flow analysis has been developed in Cartesian coordinates considering variable thermal conductivity and non-uniform diffusion coefficient. …”
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1435
Applications of triadic hybridized-cross nanomaterials suspended in engine oil using quadratic and linear convection with magnetic dipole
Published 2023-04-01“…The flow of a cross model (CM) with mass and thermal transport has been modeled in Cartesian coordinates for the two-dimensional fluid flow problem. …”
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1436
On Solutions of Generalized Implicit Equilibrium Problems with Application in Game Theory
Published 2022-04-01“…Then some existence theorems for GIVEP are presented, also some suitable conditions in order the solution set of GIVEP is compact and convex for set-valued mappings whose are a subset of the cartesian product of Hausdorff topological vector space and their range is a subset of a topological space values (not necessarily locally convex or a topological vector space). …”
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1437
Self-Directed Mobile Robot Navigation Based on Functional Firefly Algorithm (FFA)
Published 2023-10-01“…This approach has two key advantages: first, the linear objective function performs efficiently with the single degree and finite-order polynomial time operation, and second, the cartesian constraint performs compactly with the chosen degree of freedom on the finite interval. …”
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1438
Oil spill identification in X-band marine radar image using K-means and texture feature
Published 2022-10-01“…First, the de-noised image was obtained by preprocessing the original image in the Cartesian coordinate system. Second, it was cut into slices. …”
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1439
Boresight Calibration of Construction Misalignments for 3D Scanners Built with a 2D Laser Rangefinder Rotating on Its Optical Center
Published 2014-10-01“…Moreover, aligning the extra rotation axis with the optical center allows the 3D device to maintain the same minimum range as the 2D scanner and avoids offsets in computing Cartesian coordinates. The paper proposes a practical procedure to estimate construction misalignments based on a single scan taken from an arbitrary position in an unprepared environment that contains planar surfaces of unknown dimensions. …”
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1440
An Improved Immersed Boundary Method for Simulating Flow Hydrodynamics in Streams with Complex Terrains
Published 2020-08-01“…In this work, an immersed boundary method is developed in an existing terrain-conforming CFD model named U<sup>2</sup>RANS as an alternative, in which terrains are represented implicitly in the Cartesian background mesh. An improved two-layer wall function is proposed in the framework of the <i>k</i>-<i>ε</i> turbulence model, with the aim of producing accurate and smooth wall shear stress distribution and paving the way for future model development on sediment transport and scour modeling. …”
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