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Shulgina, Yuliya, Maria A. Kostina, Evgeniy Shulgin, and Alexey Soldatov. "Method of Processing Data of Acoustic Array." Materials Science Forum 970 (September 2019): 242–49. http://dx.doi.org/10.4028/www.scientific.net/msf.970.242.
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Within this article, a method has been developed to reduce the amount of transmitted data from the receiving and preprocessing unit to a personal computer. On logical grounds, there is compelling reason to use as a basic property of an ellipse as a ground of the method. The developed data processing algorithm for the multi-element array system was tested in the MatLab software package. Also, a block diagram and data processing algorithm were developed for the practical implementation on a field programmable gate array.
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Soloviev, A. N., M. A. Tamarkin, and Nguyen Van Tho. "Finite element modeling method of centrifugal rotary processing." Vestnik of Don State Technical University 19, no. 3 (2019): 214–20. http://dx.doi.org/10.23947/1992-5980-2019-19-2-214-220.
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Introduction. In modern production, when performing finishing operations, centrifugal rotary processing in the medium of abrasive plays an important role. High productivity, low costs and extensive technological capabilities are the main advantages of these cleaning and finishing operations. This paper considers the process of abrasive particle – workpiece surface interaction within the framework of the static contact problem of the elasticity theory. Thus, plastic deformation in the contact area comes into account.Materials and Methods. The abrasive particle (corundum) is simulated with a linearly elastic body, whose Young's modulus is significantly larger than that of the work material. The process material (steel) is simulated with an elastoplastic bilinear body using the von Mises yield criterion.Research Results. Finite element modeling of the structures under consideration was performed in the ANSYS CAE package. The process of abrasive particle – workpiece surface interaction was simulated; its stress-strain state was analyzed. The results of numerical experiments are presented. They have determined how equivalent plastic strains are distributed at depths of the cone penetration of 0.01 mm and 0.05 mm. The data obtained, as well as the areas of plastic strain values of more than 1%, are visualized in the ANSYS CAE package.Discussion and Conclusions. It is established that the equivalent plastic deformation is proportional to the depth of penetration (DP). It reaches a minimum value of 0.158 at DP = 0.01 mm, and a maximum of 0.825 at DP = 0.05 mm. The dependences of the plastic region sizes on DP are determined for cases when the plastic deformation exceeds 1%. At the maximum penetration (0.05 mm), the deformation radius is 1 mm, and the depth is 0.8 mm. On the basis of the data obtained as a result of the conducted research, the parameters of the technological process (rotational speed, size of the abrasive surface, mass of abrasive particles) that affect the workpiece – abrasive particle interaction can be selected. A judicious choice of these parameters will increase the processing efficiency
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Tsmots, Ivan, Vasyl Teslyuk, Yurii Opotyak, Taras Mamchur, and Oleksandr Oliinyk. "Synthesis of recursive-type neural elements with parallel vertical-group data processing." Eastern-European Journal of Enterprise Technologies 3, no. 2 (135) (2025): 6–16. https://doi.org/10.15587/1729-4061.2025.329139.
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The object of this study is the processes of parallel vertical-group data processing and minimization of equipment costs, which enable the synthesis of real-time recursive neural elements with high efficiency of equipment use. A model of a recursive-type neural element has been built, which, through the use of a parallel vertical-group method for calculating the scalar product and the ability to choose the number of bits in the group for the formation of partial products, coordinates the time of receipt of weights and input data with the time of calculating the result at the output of the neural element. This approach provides a hardware implementation of the neural element with minimal use of equipment. The basic structure of the neural element has been designed, which, through the use of hardware mapping of the constructed graph model, regularity, and modularity of the structure, provides the synthesis of hardware for a specific application. The application of pipelines and spatial parallelism of data processing, as well as the organization of the process of calculating the scalar product, as the performance of a single operation, enables the implementation of a neural element for real-time operation. Analytical expressions have been built to estimate the parameters of a neural element depending on the bit depth of operands, the number of data inputs, and the number of bits in the group. A method for synthesizing a recursive-type neural element has been devised, which, due to the use of the basic structure, enables mechanisms for matching the time of receipt of weight coefficients and input data with the time of calculating the output, thus ensuring its implementation for specific applications. Considering ways to minimize equipment costs ensures the construction of a neural element with minimal hardware costs. The synthesized neural element for a data depth of 16 bits with an increase in the number of bits that are simultaneously processed in a group, from 2 to 8, provides a decrease in the processing time by 2.8 times with a reduction in the efficiency of using the equipment of the neural element by no more than 1.6 times
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Li, Weihan, Yang Li, Ling Yu, et al. "A Novel Fault Feature Extraction Method for Bearing Rolling Elements Using Optimized Signal Processing Method." Applied Sciences 11, no. 19 (2021): 9095. http://dx.doi.org/10.3390/app11199095.
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A rolling element signal has a long transmission path in the acquisition process. The fault feature of the rolling element signal is more difficult to be extracted. Therefore, a novel weak fault feature extraction method using optimized variational mode decomposition with kurtosis mean (KMVMD) and maximum correlated kurtosis deconvolution based on power spectrum entropy and grid search (PGMCKD), namely KMVMD-PGMCKD, is proposed. In the proposed KMVMD-PGMCKD method, a VMD with kurtosis mean (KMVMD) is proposed. Then an adaptive parameter selection method based on power spectrum entropy and grid search for MCKD, namely PGMCKD, is proposed to determine the deconvolution period T and filter order L. The complementary advantages of the KMVMD and PGMCKD are integrated to construct a novel weak fault feature extraction model (KMVMD-PGMCKD). Finally, the power spectrum is employed to deal with the obtained signal by KMVMD-PGMCKD to effectively implement feature extraction. Bearing rolling element signals of Case Western Reserve University and actual rolling element data are selected to prove the validity of the KMVMD-PGMCKD. The experiment results show that the KMVMD-PGMCKD can effectively extract the fault features of bearing rolling elements and accurately diagnose weak faults under variable working conditions.
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Di Rienzo, Luca, Alberto Cosmai, and Stephan Russenschuck. "Post-Processing Magnetic Measurement Data of Accelerator Magnets by the Boundary Element Method." IEEE Transactions on Magnetics 53, no. 6 (2017): 1–4. http://dx.doi.org/10.1109/tmag.2017.2652119.
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Yuan, Su Ling. "The Element-Free Method for Steam Turbine Rotor." Applied Mechanics and Materials 281 (January 2013): 343–46. http://dx.doi.org/10.4028/www.scientific.net/amm.281.343.
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The element-free method is a new numerical method, which requires only nodal data and whose shape functions are continual and differentiable. The element-free method employs moving least-square approximants to approximate original functions. In this paper, discrete equations of axial symmetry problem are obtained by variational principle and Gaussian quadrature. Several numerical examples indicate that the element-free method can obtain more accurate results about these problems, moreover, results and their gradients are continuous in the entire domain and post-processing to obtain a smooth gradient field is total unnecessary. Finaly, the element-free method is applied to heat conduction problems for steam turbine rotor.
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Ragulin, Vitaliy, Salman Rasheed Owaid, Heorhii Kuchuk, et al. "Development of a method for increasing the efficiency of processing heterogeneous data using a metaheuristic algorithm." Eastern-European Journal of Enterprise Technologies 4, no. 3 (130) (2024): 21–28. http://dx.doi.org/10.15587/1729-4061.2024.309126.
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The problems of processing heterogeneous data are discontinuous, undifferentiated, and multimodal. The most common approaches to processing heterogeneous data are swarm intelligence algorithms (swarm algorithms). Given the above, classical gradient deterministic algorithms are inappropriate for solving the problems of processing heterogeneous data. The problem solved in the study is to increase the efficiency of processing heterogeneous data circulating in information systems, regardless of the number of data sources. The object of the study is hierarchical systems. A method for increasing the efficiency of processing heterogeneous data using a metaheuristic algorithm is proposed. The study is based on the reptile algorithm (RA) for processing heterogeneous data circulating in the system. For RA training, evolving artificial neural networks are used. The originality of the proposed method lies in setting RA taking into account the uncertainty of the initial data, improved global and local search procedures. Also, the originality of the study lies in determining RA feeding locations, which allows prioritizing the search in a given direction. The next element in the originality of the study is the possibility of choosing an RA hunting strategy, which allows a rational use of available system computing resources. Another original element of the study is determining the initial velocity of each RA. This makes it possible to optimize the speed of exploration of each RA in a certain direction. The method provides a 15–19 % increase in data processing efficiency by using additional improved procedures. The proposed method should be used in processing large amounts of data
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Yeniwati, Desi, Nilawati -, and Irma Suana. "SISTEM PENGOLAHAN DATA KEUANGAN PADA MADRASAH ALIYAH SWASTA MAHDALIYAH KOTA JAMBI." JURNAL AKADEMIKA 12, no. 2 (2020): 54–59. https://doi.org/10.53564/akademika.v12i2.382.
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School is a big activity where there are interrelated components. One important element that must be possessed by schools is optimal financial data processing. This research has produced a Financial Data Processing System in the Private City of Mahdaliyah Aliyah Madrasah City of Jambi, which is expected to be able to optimize the activities of financial data processing in the Private City of Aliyah Mahdaliyah Madrasah City of Jambi. This application was built using Visual Basic 6.0 tools and MySQL Database. The research method used is the waterfall method, as well as system modeling using Data Flow Diagram (DFD) modeling.
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Liang, Baohua, Haiqi Zhang, Zhengyu Lu, and Zhengjin Zhang. "Indistinguishable Element-Pair Attribute Reduction and Its Incremental Approach." Mathematical Problems in Engineering 2022 (September 29, 2022): 1–16. http://dx.doi.org/10.1155/2022/6876144.
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Attribute reduction is a popular approach of preprocessing data. Discernibility matrix is a typical method that focuses on attribute reduction. Faced with the processing of modern information systems with large amounts of data and rapid changes, the traditional static discernibility matrix reduction model is powerless. To overcome this shortcoming, this paper first proposes an indistinguishable element pair method that does not need to store discernibility information, which retains the advantages of institution and easy-to-understand, and at the same time effectively solves the problem of space consumption. In order to make the model adapt to the processing of dynamic data sets, we further study the incremental mechanism and design a set of dynamic reduction models, which can adjust the reduction set in time according to the changes of objects. Theoretical analysis and experimental results indicate that the proposed algorithm is obviously superior to the discernibility matrix model, and can effectively deal with the reduction of dynamic data sets.
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Zu, Hai Ying, Mi Tian, and Jia Xuan Han. "Reverse Modeling Analysis and Design on Rubber Sealing Element in Spherical BOP." Advanced Materials Research 655-657 (January 2013): 300–304. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.300.
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Spherical BOP is one of crucial equipments in snubbing operation well in petroleum industries, with its core element of rubber sealing element, the connection between the spherical surface of metal skeleton and the rubber is irregular surface, it is difficult to determine the model by manual surveying and mapping. The paper put forward a design method on spherical bop rubber sealing element with the reverse engineering technology. Through the analysis of the reverse surveying and mapping basic requirements on spherical bop rubber sealing element, determined its data acquisition path and process spherical, and puts forward some solutions to the data merger, data transfer and the method of pixels processing.
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Lu, Lu, and Zhao Xu Wang. "Equivalent Stress Analysis of Piercing Process in Diescher’s Mill Using Finite Element Method." Advanced Materials Research 648 (January 2013): 170–73. http://dx.doi.org/10.4028/www.scientific.net/amr.648.170.
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In this paper, the simulation of the piercing process is performed by the three dimensional finite element method in Diescher’s mill. After a short description of the problem the numerical model of the process is described. The simulated results visualize dynamic evolution of equivalent stress, especially inside the work-piece. The non-uniform distribution of stress on the internal and external surface of the work-piece is a distinct characteristic of processing tube piercing. And it is the basic data for improving tool and design, predicting, damage and controlling the micro-structural evolution of processing tube piercing.
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Yu, Ling, Jing Yuan, Ying Wu, Renjie Hu, Qinghui Yang, and An Lu. "An ensemble empirical mode decomposition method based on finite element analysis for optimization." Journal of Physics: Conference Series 3019, no. 1 (2025): 012036. https://doi.org/10.1088/1742-6596/3019/1/012036.
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Abstract In direct current, there are not only DC signals but also ripple, distortion, and noise signals. In addition to avoiding various errors from the hardware, it is also necessary to compensate for errors in data processing. The algorithm is used to process the data collected by the signal acquisition module of the device to remove the interference in the original signal and reduce the signal error.
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Emelyanov, V. A., E. B. Shershnev, Yu V. Nikitjuk, S. I. Sokolov, and I. Y. Aushev. "Estimating the Parameters of Laser Processing of Diamonds Using the Finite Element Method and Artificial Neural Networks." Doklady BGUIR 21, no. 4 (2023): 40–45. http://dx.doi.org/10.35596/1729-7648-2023-21-4-40-45.
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This paper provides the simulation of laser processing of diamonds by using a combination of artificial neural networks and the finite element method. The training data array and the data array for testing neural networks were generated in ANSYS. The calculations were performed for 600 types of input parameters, 60 of which were used to test artificial neural networks. The influence of the parameters of neural network models on the accuracy of determining temperatures in the laser processing area were studied. The parameters of neural networks were established that provide acceptable results in predicting temperatures generated by laser radiation in diamonds. The results obtained can be used to determine the technological parameters of the laser processing of diamonds.
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Lu, Songyan. "Optimization of Object-oriented 3D CAD Pre-processing System for Steel Structure of High-rise Buildings." Computer-Aided Design and Applications 18, S3 (2020): 106–17. http://dx.doi.org/10.14733/cadaps.2021.s3.106-117.
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In this paper, the object-oriented method is used to study the pre-processing system of 3D high-rise building steel structure CAD. For the high-rise building steel structure design optimization system, users mainly contact with the functions of modeling, analysis, design checking and drawing. In fact, all these functions are carried out around the data stored behind. Three-dimensional high-rise building steel structure CAD pre-processing subsystem mainly integrates three-dimensional entity construction module, node design and editing module, construction drawing, processing drawing and CNC data output module. In this paper, the wall element is used to simulate the shear wall element, and the wall element can be automatically refined into a shell element composed of quadrilateral membrane element with rotational degree of freedom and generalized conforming bending plate element for thick and thin plate, which improves the speed and accuracy of analysis and calculation of shear wall. Various loads of high-rise building are calculated, especially the wind load of space action. It provides a new idea for wind load calculation of high-rise buildings. It is better to put forward a practical system optimization model, which can deal with the objective function, variables and constraints in a large number of engineering processing, and consider the actual constraints as fully as possible, which has strong practicability.
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Orysenko, O. V., A. I. Kryvorot, V. V. Ilchenko, and H. А. Filipova. "THE AUTOMOBILE TIRES VULCANIZATION METHOD REPAIR PROCESS EXPERIMENTAL INVESTIGATION." ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 1, no. 50 (2018): 56–61. http://dx.doi.org/10.26906/znp.2018.50.1059.
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In the article local repair automobile tires expediency by vulcanization means in mechanical damage carcass case is shown. It has been established that analytical and experimental data on determining the required temperature of the heating element have a significant discrepancy. It was found that on the vulcanization degree among all factors temperature and pressure on the welding surfaces are the most influential. After processing the experimental data and using the static methods, mathematical dependence of the temperature on the welding surface from the heating element temperature and on the welding surfaces as a second-degree polynomial is obtained. In order to verify the research results reliability, the control welding of the automobile tires with cord lateral rupture was conducted, which gave positive results.
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Mori, Kenichiro, and Y. Kanno. "Development of PC Cluster Parallel Processing Scheme of 3-D Rigid-Plastic Finite Element Method Using Diagonal Matrix." Key Engineering Materials 340-341 (June 2007): 371–76. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.371.
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The 3-D rigid-plastic finite element method using a diagonal matrix was applied to parallel processing using a distributed memory type PC cluster. The cluster composed of cheap PCs becomes common as a low-cost system in the parallel processing. Since the computers in the distributed memory type PC cluster have individual memory units, the transfer of date among computers during the computation is required, and thus the time for the data transfer is taken into consideration. The renewal of data in each computation is limited because of the time of data transfer unlike the shared memory type workstation. This brings about the delay of data renewal. A data transfer scheme was investigated to optimize the total computational time in the parallel processing. The effect of the delay of date renewal on the convergence of the solution was examined in the simulation of upsetting of rectangular block with an inclined tool by means of a cluster composed of 4 PCs and 100MBit/s Ethernet.
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Owerko, Tomasz, and Przemysław Kuras. "Effective Processing of Radar Data for Bridge Damage Detection." Shock and Vibration 2019 (April 17, 2019): 1–13. http://dx.doi.org/10.1155/2019/2621092.
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This paper presents the practical results of the evaluation of the data obtained by using ground-based radar interferometer during measurements carried out on bridge structures. Due to the nature of the objects studied, the authors proposed a comprehensive method of data analysis, which identifies whether the passage of the vehicle did not damage the bridge. The effective use of vehicles as a source of bridge excitation allowed us to first develop a method for determining the damping parameters resistant to potentially occurring beating frequencies. As a result, it is possible to determine these subsets of data registered with radar, for which it is possible to assume compliance with linear systems. This type of data, often omitted in other works, forms the basis for the second important element of the research—an algorithm based on the ARMA model supporting defect detection. The optimization of the performed calculations, in particular the proposed optimal ARMA model order, the method of fault identification based on the DSF parameter, or fault identification based on a nonmetrical Cook’s distance leads to a robust and scalable method. The method’s low computational complexity allows for implementation in real-time solutions. In addition, the distribution of errors and the sensitivity of classifiers based on the DSF parameter and Cook’s distances leaving them will enable the automation of the classification process using machine learning. The proposed method is universal; in particular, it can be used for radar interferometry methods because it is resistant to potentially variable environmental conditions.
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Wrzosek, Filip. "Finite Element Modelling of a Transmission Steel Lattice Tower Based on LiDAR Point Cloud Data." ce/papers 6, no. 3-4 (2023): 1174–78. http://dx.doi.org/10.1002/cepa.2680.
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AbstractThis article presents an innovative modelling method, which can serve as a set of guidelines for future applications related to point cloud data processing of steel lattice structures used for FEA modelling purposes. This method is fully automated, resulting in repeatable results and saving time required for manual data processing. The study investigated two types of input point cloud data, aerial and terrestrial, and compared the resulting model to an idealized model based on design documentation. Results showed that the LiDAR point cloud data is a good source of information for reconstructing a geometric CAD model and can be implemented in FEA. The impact of point cloud data usage for FEA modelling is demonstrated by investigating differences between FEA results of the point cloud‐based and idealized models, allowing for an understanding of the influence of real‐life imperfections on force redistribution across the analyzed structure and ultimate forces reached by members loaded in compression. This modelling method and analysis can serve as guidelines for future applications related to point cloud data pro‐cessing of steel lattice structures used for FEA modelling purposes.
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Ma, Siyu, Yuxiang Zhang, Zhinan Xie, and Jun Li. "Seafloor Topographic Data Processing in Near-Seafloor Acoustic Field Simulation." Acoustics 6, no. 4 (2024): 966–77. http://dx.doi.org/10.3390/acoustics6040053.
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Near-seafloor acoustic field characteristics are essential prior knowledge for near-seafloor underwater acoustic engineering. Scholte waves are a crucial component of the near-seafloor acoustic fields. These fields, when considering Scholte waves, are susceptible to seafloor relief. However, open-source bathymetric datasets generally lack sufficient precision. Therefore, acoustic field simulations using open-source data can contain significant errors or even introduce erroneous propagation characteristics. The spectral element method (SEM) is an example of exploring the influence of an inadequate spatial-sampling rate and sea-depth precision on acoustic field simulations. In this article, appropriate methods for topographic processing are presented. The results indicate that the terrain can be corrected using cubic spline interpolation in cases of an inadequate spatial-sampling rate. Where there is insufficient sea-depth precision, this study proposes a terrain processing method. The first step involves sequentially determining the interpolation points for the rising and falling edge, depressions, bulges, and horizontal segments. Then, it adopts cubic spline interpolation. The SEM examples effectively verify this effect. Given the limited research on terrain correction in acoustic field simulations, this study introduces a low-complexity method that can effectively support exploring acoustic fields affected by seafloor terrain.
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Ulfa, Henny Maria. "Analisis Unsur Manajemen dalam Pengolahan Rekam Medis di Rumah Sakit TNI AU Lanud Roesmin Nurjadin." KESMARS: Jurnal Kesehatan Masyarakat, Manajemen dan Administrasi Rumah Sakit 1, no. 1 (2018): 20–25. http://dx.doi.org/10.31539/kesmars.v1i1.146.
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Hospitals must conduct a medical record activities according to Permenkes NO.269 / MENKES / PER / III / 2008 about Medical Record, to achieve the purpose of medical record processing required 5 management elements are: man, money, material, machine, and method. The medical record processing that has been implemented at the Hospital TNI AU LANUD Roesmin Nurjadin that is coding, coding only done for BPJS patients whose conducted by the officer with education background of D3 nursing, it be impacted to the storage part is wrong save and cannot found patient medical record file because are not returned. The purpose of this research is to know the element of management in the processing of medical records at the Hospital TNI AU LANUD Roesmin Nurjadin. This research is done by Qualitative descriptive method, Qualitative approach, instrument of data collection of interview guidance, observation guidance, check list register, and stationery, number of informant 6 people with inductive way data analysis. The result of this research found that Mans elements only amounts to 2 people so that officers work concurrently and have never attended training, material element and machines elements of medical record processing not yet use SIMRS and tracer, while processing method elements follow existing habits and follow the policy of hospital that is POP organization. 
 Keywords: Management elements, medical record processing
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Yang, Zhong, Xiao Xian Yao, and Dong Xu Zhang. "Research on a Test Method of Dynamic Force of Jet Elements." Applied Mechanics and Materials 574 (July 2014): 154–59. http://dx.doi.org/10.4028/www.scientific.net/amm.574.154.
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According to the characteristics of the dynamic force of jet elements, a kind of simple pendulum test system was presented. The dynamic jet force value was obtained indirectly by the acceleration value of the jet element under its force. The mathematic model of the test system was established and the test errors of the amplitude and delay time were analyzed. A processing method of dynamic force test data was presented based on the test curve and the parameters of amplitude and delay time were obtained. The result indicates that the test method can satisfy the testing requirements of dynamic force and it has advantages of simple structure, low demands of testing condition and simple method of data processing.
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Shashko, Yurii, та Oleksiy Kulyk. "Вдосконалення процесу обробки абразивно-повітряним струменем робочих поверхонь лопаток моноколіс закритого типу на основі даних чисельного моделювання за допомогою програмного комплексу ANSYS CFX". Aerospace Technic and Technology, № 5 (3 жовтня 2023): 64–77. http://dx.doi.org/10.32620/aktt.2023.5.05.
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The correct choice of technological modes can guarantee the results of inkjet processing. However, the need to consider a significant amount of input data, namely the parameters of the equipment, the abrasive jet, the physical and mechanical properties of the material, and the shape of the processed product surfaces, as well as the lack of clear recommendations and technological data, significantly complicates the process. The subject of this study is the process of processing the surface of closed-type blades with an abrasive-air jet made in one piece with a disk of the "monowheel" type, using the SLM technology of Inconel 718 alloy. The goal of this task is to model the jet processing of closed-type monowheel blades using the ANSYS CFX finite element analysis software system. This article presents the results of numerical modeling of the surface treatment of closed turbine blades and the identification of technological factors that affect the roughness and quality of the surface of the compressed air environment on samples of closed turbine blades made of Inconel 718 alloy. The task: to develop a research plan and study the processing process and accompanying phenomena occurring during processing using the finite element method using the ANSYS CFX software complex, considering the physical and mechanical properties of the abrasive often, the environment, and the processed material. The following results were obtained: during mathematical modeling using the finite element method, data were obtained for sixteen calculation variants of blade surface treatment, from which the most optimal one was chosen, which provides the largest contact area of abrasive particles and their uniform interaction with the processing surface. In addition, during the research, the impact of "unevenness of erosion" and the graininess of abrasive materials on the quality of the treated surface was studied. Further analysis of the data of the research results made it possible to find ways to solve these tasks, which was confirmed by the control and verification results. Conclusions. The scientific novelty of the obtained results is as follows: for the first time, the processing of closed turbine blades made in one piece with a "monowheel" type disk and obtained by the additive method with an abrasive air jet was investigated. The obtained research data were used as a basis for developing a real route technological process for processing closed-type turbine blades manufactured using the additive method.
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Palahin, Volodymyr, Olena Palahina, Oleksandr Ivchenko, and Anatolii Bairak. "Development of the Combined Operations Method to Improve the Efficiency of Block Encryption." Mathematical and computer modelling. Series: Technical sciences 25 (September 30, 2024): 78–88. http://dx.doi.org/10.32626/2308-5916.2024-25.78-88.
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Real-time information protection requires the implementation of special methods aimed at providing reliable and fast encryption algorithms to protect personal and corporate information from unauthorized access. With the growth of data volumes and the speed of their processing, the importance of effective encryption methods increases significantly. One of the common, reliable and well-known encryption algorithms is AES (Advanced Encryption Standard), also known as Rijndael, which is a symmetric block cipher. AES has high efficiency and cryptoresistance and is suitable for processing large volumes of data. The reliability and speed of encryption and decryption using the AES algorithm depends on the size of the key and the data. This paper proposes to improve algorithm of symmetric block encryption AES to provide faster data processing. The possibility of combining mathematical operations that have a similar principle of processing elements is shown. This approach made it possible to reduce the processing time for data encryption and decryption compared to known implementations. A comparative analysis of the practical implementation of the standard and optimized AES cryptoalgorithms has been carried out. The general principles of the proposed method are to transform all two-dimensional arrays into one-dimensional arrays, add auxiliary tables for ShiftRows and MixColumns operations, and combine operations with similar element processing principles. The simulation results showed that the modified implementation of the AES algorithm demonstrates a reduction in processing time of up to 50% when encrypting and up to 75% when decrypting data compared to known results
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Lamichhane, Bishnu P., and Lutz Gross. "Inversion of geophysical potential field data using the finite element method." Inverse Problems 33, no. 12 (2017): 125009. http://dx.doi.org/10.1088/1361-6420/aa8cb0.
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Glukhov, V. A., Yu A. Goldin, G. V. Zhegulin, and M. A. Rodionov. "Complex Processing of Lidar Survey Data of Marine Areas." Fundamental and Applied Hydrophysics 15, no. 3 (2022): 27–42. http://dx.doi.org/10.59887/fpg/26nu-3hte-3n48.
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The complex processing of data from the shipborne lidar survey of the Black Sea coastal areas was carried out. In this area, internal waves are often observed according to contact and satellite observations. The source of probing linearly polarized laser pulses in the lidar is a solid-state laser with diode pumping of the YAG: Nd active element with a pulse power of 20 mJ at a wavelength of 532 nm and a duration of 7 ns. The co- and cross-polarized components of the echo signal were recorded during the lidar survey. The cross-polarized component of the echo signal was mainly used due to its greater sensitivity to various kinds of inhomogeneities in the vertical distribution of hydrooptical characteristics. The purpose of processing is to identify quasi-periodic structures in the spatial distribution of the characteristics of lidar echo signals caused the propagation of short-period internal waves. Three processing methods were applied: the approximation method, the wavelet analysis method, and the Hilbert-Huang transform method. A large array of data obtained during 50 hours of lidar survey has been processed. Three 60-minute tracks containing quasi-periodic structures have been identified. The three processing methods results are in good agreement with each other and make it possible to obtain the most complete information about the parameters of the studied processes. The parameters of the recorded quasi-periodic processes are typical for internal waves observed in the coastal areas of the Black Sea. In the future, when processing a large amount of lidar sounding data, it is advisable to carry out fast processing by automated spectral methods at the first stage, and to carry out detailed processing by the approximation method only for those survey areas where quasi-periodic processes have been identified.
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Palguyev, D. A., and A. N. Shentyabin. "Matrix application for multi-radar processing of radar data arrays." Radio industry (Russia) 30, no. 3 (2020): 99–111. http://dx.doi.org/10.21778/2413-9599-2020-30-3-99-111.
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In the processing of dynamically changing data, for example, radar data (RD), a crucial part is made by the representation of various data sets containing information about routes and signs of air objects. In the practical implementation of the computational process, it previously seemed natural that RD processing in data arrays was carried out by the elementwise search method. However, the representation of data arrays in the form of matrices and the use of matrix math allow optimal calculations to be formed during tertiary processing. Forming matrices and working with them requires a significant computational resource, so the authors can assume that a certain gain in calculation time may be achieved if there is a large amount of data in the arrays, at least several thousand messages. The article shows the sequences of the most frequently repeated operations of tertiary network processing, such as searching for and replacing an array element. The simulation results show that the processing efficiency (relative reduction of processing time and saving of computing resources) with the use of matrices, in comparison with elementwise search and replacement, increases in proportion to the number of messages received by the information processing device. The most significant gain is observed when processing several thousand messages (array elements). Thus, the use of matrices and the mathematical apparatus of matrix math for processing arrays of dynamically changing data can reduce processing time and save computational resources. The proposed matrix method of organizing calculations can also find its place in the modeling of complex information systems.
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Kanatnikov, N., P. Kanatnikova, and D. Pickalov. "Thermal Processes Simulation during Processing Bevel Gears." Solid State Phenomena 284 (October 2018): 495–500. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.495.
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In the article the model for forecasting of thermal processes arising during processing of bevel gears is presented. The kinematics of cutting is modeled due to the analytical model. Chipping is modeled using the finite element method. The experiment is based on the method of infrared photography of the cutting process. In the process of carrying out a numerical experiment, the graphs of the heat fields for the tool, the workpiece gear and chips were obtained, and an array of data on their change during the cutting process was achieved. The simulation results showed that the maximum temperatures and heat flows in the tool depend significantly on the choice of the rake and clearance angels of the cutting.
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Sadek, Mohammad, and Ying Chen. "Discrete element modelling (DEM) of hemp processing using a hammermill." Canadian Biosystems Engineering 63, no. 1 (2022): 2.01–2.11. http://dx.doi.org/10.7451/cbe.2021.63.2.1.
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The discrete element method (DEM) was used to develop a model to simulate hemp processing using a hammer mill. The model was computed using a commercial software package - Particle Flow Code in Three Dimensions (PFC3D). In the model, a simulated hemp stem was defined using spherical particles connected with parallel bonds implemented in the PFC3D. The breakage of the bonds mimics the hemp breaking phenomenon within the hammermill. A micro property, bond strength of the hemp stems, was calibrated using the literature data from compression tests of hemp stems. The calibrated bond strength was 2.2 x106 Pa. With the calibrated bond strength, the model was used to simulate the power and energy distributions within the hammermill. The simulations were performed for different hammer rotational speeds and feeding masses. The results showed that both the specific kinetic and strain energies increased with the increase of the feeding mass; however, the effects of the hammer rotational speed did not follow any particular trends.
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Kodzhaspirov, G. E., and A. I. Rudskoy. "Simulation of Thermomechanical Control Processing of Steels through the Use of Experimental Planning and FEM." Materials Science Forum 762 (July 2013): 289–94. http://dx.doi.org/10.4028/www.scientific.net/msf.762.289.
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The experimental planning method has been used for the examination of the combined effect of the temperature, strain, strain rate and time elapsed from the end of deformation to the start of quenching parameters of the Thermomechanical Control Processing on the structure and mechanical properties. Simulation of Thermomechanical Control Processing for the definite cross-section of profile by Finite Element Method on the base of the data obtained by the experimental planning method allowed to predict structure and mechanical properties and to develop computer modelling for the different cross-section of rolling profile.
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Vorotnev, D. V., R. V. Golovanov, D. A. Kuznetsov, K. V. Panfilova, S. V. Umnyashkin, and I. O. Sharonov. "OPENVX STANDARD TENSOR IMPLEMENTATION FOR ARTIFICIAL NEURAL NETWORKS ON SPECIALIZED PLATFORMS." Issues of radio electronics, no. 8 (August 20, 2018): 104–11. http://dx.doi.org/10.21778/2218-5453-2018-8-104-111.
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NNE extension for OpenVX 1.2 standard adds functions that implement layers of artificial neural networks. Each layer receives a tensor object as input, processes it and passes the result tensor to the next layer. Implementation recommendations and hardware optimization of tensor processing functions were proposed. The types of data supported by the OpenVX standard for creating of tensors are given, and the operations for processing them are described. The mathematical and software models of tensors are described in detail, which allow performing element-by-element processing. A new program model of the tensor is proposed, which allows to reduce the implementation of functions for processing tensors to the re-invocation of functions for image processing of the OpenVX standard. There are a detail description of functions algorithms from NNE extension based on the proposal method in the paper. Advantages and disadvantages of considered approach function implementation were shown.
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Li, Qing Ying, Tian Bai, and Chun Ling Zhu. "Deicing Excitation Simulation and Structural Dynamic Analysis of the Electro-Impulse Deicing System." Applied Mechanics and Materials 66-68 (July 2011): 390–95. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.390.
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A two-dimensional electromagnetic eddy current field analysis model of the experimental electro-impulse deicing system (EIDI) is developed. Additionally, a numerical post-processing method is proposed to calculate the deicing excitation exerting on the testing skin. Moreover, a three-dimensional dynamic analysis finite element model of the testing skin loaded the excitation is built for evaluating the response accelerations. Then, the calculated accelerations are compared with the experimental measured data to validate the correctness of the proposed methods. It is obtained that the results agree well, which indicates that it is feasible to use the method of post-processing pressure distribution for solving the deicing excitation and the method of structural dynamic finite element analyzing the testing skin for simulating dynamic response. The presented methods pave a way for ice failure analysis of the EIDI system.
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Dong, Hai, Qing Quan Tong, and Yi Kai Wang. "Study on Quality Control Method in Multi-Specification and Small-Batch Production." Advanced Materials Research 1006-1007 (August 2014): 363–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1006-1007.363.
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Aiming at the problem of less quality characteristics data in multi-specification and small-batch production, matter-element theory was applied to adjust similarity of factors affecting the quality during the processing, thus similar processes was divided and data shortage problem was resolved. In addition, the relative range method was applied to translate characteristics data, thus drawing the control chart to judge process control state.Through the analysis of a case,the validity of quality control method was verified in the multi-specification and small-batch production.
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Sazonova, S. A., V. F. Asminin, A. V. Zvyagintseva, T. V. Kurchenkova, and S. S. Rylev. "Numerical calculation of a statically indeterminate frame by the finite element method." Journal of Physics: Conference Series 2094, no. 3 (2021): 032030. http://dx.doi.org/10.1088/1742-6596/2094/3/032030.
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Abstract A numerical calculation of a statically indeterminate frame with high rigidity elements with the computer program STAB12. EXE using the finite element method is performed. An example of generating the source data for the program STAB12. EXE with subsequent processing of the results of the calculations is given. The features of checking the balance of nodes, rods and the frame as a whole based on the use of values taking into account the signs on the diagrams of torques, longitudinal and transverse forces are described. According to the results of calculations, the computer shows the frame in a deformed state.
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Zhao, Ying, Jiahao Chen, Qiang Zhou, Xiaohan Jia, and Xueyuan Peng. "Numerical Simulation and Experimental Validation of the Vibration Modes for a Processing Reciprocating Compressor." Shock and Vibration 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/5327326.
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The low-order vibration modes of a reciprocating compressor were studied by means of numerical simulation and experimental validation. A shell element model, a beam element model, and two solid element models were established to investigate the effects of bolted joints and element types on low-order vibration modes of the compressor. Three typical cases were compared to check the effect of locations of moving parts on the vibration modes of the compressor. A forced modal test with the MRIT (Multiple References Impact Test) technique was conducted to validate the simulation results. Among four numerical models, the solid element model with the bolt-pretension method showed the best accuracy compared with experimental data but the worst computational efficiency. The shell element model is recommended to predict the low-order vibration modes of the compressor with regard to effectiveness and usefulness. The sparsely distributed bolted joints with a small bonded region on the contact surface were key bolted joints that had greater impacts on the low-order vibration modes of the compressor than the densely distributed bolted joints. The positions of the moving parts had little effect on the low-order vibration modes of the compressor.
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Golosov, Andrei, Olga Lubimova, Mikhail Zhevora, Vladislava Markevich, and Vladimir Siskov. "Data processing method for experimental studies of deformation in a rock sample under uniaxial compression." E3S Web of Conferences 129 (2019): 01018. http://dx.doi.org/10.1051/e3sconf/201912901018.
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As a result of experimental and theoretical studies, the patterns of behavior of rocks in a condition close to destructive are the focal nature of the preparation of macrocracking, which allowed us to include the mesocrack structure of the material, which is the main element in the preparation of macrocracking. Differences in this new approach to mathematical modeling will let adequately describe dissipative mesocrack structures of various hierarchical levels of geodesy, predict dynamic changes, structures and mechanical properties of both rock samples and massif, which also lead to resource-intensive experimental studies. In this paper, with usage of the methods of cluster, factor, and statistical analysis, we set the task of processing the data of experimental studies of the laws of deformation and preparing macro-fracture of rock samples by various methods, including acoustic and deformation observations.
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Myrzalyiev, D. S., O. B. Seidullayeva, D. A. Abzalova, and N. N. Rakhymtai. "Investigation of the stress-strain state of surfaces during mechanical processing." Bulletin of the L.N. Gumilyov Eurasian National University. Technical Science and Technology Series 151, no. 2 (2025): 93–106. https://doi.org/10.32523/2616-7263-2025-151-2-93-106.
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Mechanical processing of materials is a complex process in which various stresses and deformations occur, which have a significant impact on the stress-strain state (SSS) of the surfaces of the machined parts. In this paper, the stress-strain state (SSS) of surfaces obtained as a result of mechanical processing is investigated using the SolidWorks program. Modeling in this program allows you to take into account the influence of factors such as cutting depth, cutting speed and tool characteristics. The main purpose of the study is to analyze the stress and strain distribution on the surface of materials such as steel, aluminum, and titanium. Using the finite element method (FEM), a number of data were obtained that make it possible to predict critical zones and improve the quality of processing. Using the SolidWorks program in the process of writing this article provides significant opportunities for optimizing technological processes. Based on the data obtained and the results of the conducted research, several methods of stress-strain control have been proposed to improve the quality of the treated surfaces and increase the productivity of the product. The results obtained in the article confirm the effectiveness of the finite element method for optimizing the technological processes of mechanical processing.
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Uysal, T. "Economic analysis of rare earth element processing methods for Mountain Pass ore." Journal of the Southern African Institute of Mining and Metallurgy 122, no. 7 (2022): 1–6. http://dx.doi.org/10.17159/2411-9717/1989/2022.
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The increasing demand for rare earth elements (REE) in highly strategic sectors such as hybrid electric vehicles, renewable energy, communication technologies, and the defense industry has made REE production methods important. In recent years, studies on REE have increased rapidly; however there are many studies on REE, there are not enough studies in the literature on the economics of the beneficiation process. RE ores are generally leached after beneficiation by gravity, magnetic and flotation methods. In this study, direct leaching, attrition scrubbing and leaching, and flotation and leaching methods are evaluated economically based on the data for the Mountain Pass (MP) facility. According to the sensitivity analysis performed as a function of capital cost (CAPEX), operating cost (OPEX), and rare earths oxides (REO) recovery, REO recovery has the biggest effect on the process economies. Although the flotation method entails additional investment and operating costs, transportation and operating costs are significantly reduced result of the higher grade and recovery. The flotation method is more profitable, with larger NPV and IRR values and a shorter payback period.
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Chen, Xuewen, Yuqing Du, Tingting Lian, Kexue Du, and Tao Huang. "Hot Workability of Ultra-Supercritical Rotor Steel Using a 3-D Processing Map Based on the Dynamic Material Model." Materials 13, no. 18 (2020): 4118. http://dx.doi.org/10.3390/ma13184118.
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As a new-type of ultra-supercritical HI-IP rotor steel, X12CrMoWVNbN10-1-1 alloy steel has excellent integrative performance, which can effectively improve the power generation efficiency of the generator set. In this paper, uniaxial thermal compression tests were carried out over a temperature range of 950–1200 °C and strain rates of 0.05–5 s−1 with a Gleeble-1500D thermal simulation testing machine. Moreover, based on hot compression experimental data and the theory of processing diagrams, in combination with the dynamic material model, a three-dimensional (3-D) thermal processing map considering the effect of strain was constructed. It was concluded that optimum thermal deformation conditions were as follows: the temperature range of 1150–1200 °C, the strain rate range of 0.05–0.634 s−1. Through secondary development of the finite element (FE) software FORGE®, three-dimensional thermal processing map data were integrated into finite element software FORGE®. The distributions of instability coefficient and power dissipation coefficient were obtained over various strain rates and temperatures of the Ø 8 × 12 mm cylinder specimen by using finite element simulation. It is shown that simulation results are consistent with the microstructure photos. The method proposed in this paper, which integrates the three-dimensional processing map into the finite element software FORGE® (Forge NxT 2.1, Transvalor, Nice, France), can effectively predict the formability of X12CrMoWVNbN10-1-1 alloy steel.
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Ha, Jeong Min, Jong Myeong Lee, Jeong Hoon Lee, Dong Sik Gu, and Byeong Keun Choi. "Signal Processing Method (HT and HHT) of AE for Complex Fault Detection." Materials Science Forum 762 (July 2013): 656–61. http://dx.doi.org/10.4028/www.scientific.net/msf.762.656.
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In the signal processing method, envelope analysis is a useful method to evaluate the rolling element bearing problems and Wavelet transform is a powerful method to detect faults occurred on gearboxes. However, exact method for AE signal is not developed yet. Therefore, in this paper, two methods, which are Hilbert Transform (HT) and Hilbert-Huang transforms (HHT), will be compared for development a signal processing method for early fault detection system by using AE. HHT has better advantages than HT because HHT can show the time-frequency domain result. But, HHT needs long time to process a signal, which has a lot of data, and has a disadvantage in de-noising filter.
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Semenova, Elena, Nikita Kharin, Pavel Bolshakov, Anastasiya Ivanova, and Viktoriya Yaikova. "Automatic processing and analysis of the structural properties of bone tissue." MATEC Web of Conferences 329 (2020): 03077. http://dx.doi.org/10.1051/matecconf/202032903077.
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The volumetric distribution of bone tissue can be analysed in terms of orthotropic medium. In this case, it is important to define the orthotropic directions. Nowadays, computed tomography methods allow getting such information. The method for automation such analysis is presented. Firstly, the threshold of binarization should be calculated. Then the sample should be meshed and each element should be binarized. After that fabric tensor, eigenvalues, eigenvectors and fractional anisotropy can be calculated for each element. Statistical methods were used to analyse the field of the obtained data. Described methods were used on a bone sample. It was shown that for a sample the fabric tensor is constant and the fractional anisotropy is close to zero. That’s means that the medium in the sample was isotropic.
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Hamam, Habib. "Rotation Invariant Parallel Signal Processing Using a Diffractive Phase Element for Image Compression." Applied Sciences 12, no. 1 (2022): 439. http://dx.doi.org/10.3390/app12010439.
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We propose a new rotation invariant correlator using dimensionality reduction. A diffractive phase element is used to focus image data into a line which serves as input for a conventional correlator. The diffractive element sums information over each radius of the scene image and projects the result onto one point of a line located at a certain distance behind the image. The method is flexible, to a large extent, and might include parallel pattern recognition and classification as well as further geometrical invariance. Although the new technique is inspired from circular harmonic decomposition, it does not suffer from energy loss. A theoretical analysis, as well as examples, are given.
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Gong, Hai Jun, Xin Zhong Li, Xue Yi Fan, Da Ming Xu, and Jing Jie Guo. "Data-Conversion and Displaying for Numerical Simulation of EMCC with FEM-FVM-Joint Method." Advanced Materials Research 418-420 (December 2011): 563–66. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.563.
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Abstract. For efficiently performing the numerical simulation of electromagnetic continues casting (EMCC) with finite element method (FEM) and finite volume method (FVM) combined scheme, a program integrates with data-format conversion and post-processing was proposed. The conversion of data format realized by linear interpolating, and the post processor developed on a Visual Fortran 6.6A platform using Fortran-95 language and the QuickWin module. Both 2-D and 3-D EM-FEM data calculated by a general-purpose FEM software, ANSYS, could be converted into FVM-data format using this program, and all FVM-data whether scalar quantities or vector ones could be displayed in the manners of cabinet drawing and normal axonometric drawing, which promises the correctness for data format conversion process of FEM/FVM-joint and the convenient analysis of transport phenomena during EMCC numerical simulation. The results of transport simulations and data format conversions indicate that the format-conversion method as well as the post processing is effective and convenient in numerical simulation with FEM/FVM-joint under various EM fields.
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Li, Jun, and Zong Lin Wang. "Force Analysis of the Middle Wall in Multi-Arch Tunnel under Central Hole + CRD Method." Applied Mechanics and Materials 580-583 (July 2014): 1188–91. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.1188.
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arch tunnel construction in the presence of construction mechanics often unclear, the lack of systematic design and construction of the theory can learn. Harbin Clinic Road thesis double-arch tunnel project as the basis, the construction process through its hole + CRD using the finite element simulation analysis and on-site monitoring measurement data processing, engineering arch tunnel song used in the wall study the mechanical properties.
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Pan, Chong, Xinran Ba, Yuanhua Tang, et al. "Phased Array Antenna Calibration Method Experimental Validation and Comparison." Electronics 12, no. 3 (2023): 489. http://dx.doi.org/10.3390/electronics12030489.
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This paper investigates the calibration methods appropriate to the phased array calibration in practical measurement setups. The rotating element electric field vector (REV) method, fast amplitude-only calibration method, and complex amplitude calibration method are compared and analyzed in the same measurement setup. The objective is to investigate the robustness of the discussed algorithms with different measurement ranges, with or without the support of array element on/off operation. A 4×8 uniform rectangular array (URA) is used to validate the three different calibration methods. The measurement results indicate that array element on/off measurement in the far field is suitable to be a reference calibration method in practical setup. The REV and complex amplitude calibration methods present comparable accuracy while fast amplitude-only calibration method provides less accurate calibration results in this measurement. Further, it was demonstrated that with element on/off data available, same calibration accuracy can be achieved either in small or large measurement ranges for the three different calibration methods. However, when the element on/off data is not available, the array calibration accuracy deteriorates with small measurement range. This paper presents the method to calibrate the phased array antenna in near-field by using the element on/off data. This is a very useful method in massive production line calibration. The calibration errors of different calibration methods are analyzed. Furthermore, this paper also analyzes the uncertainty of each method.
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Song, Chunhuan, and Hanshan Li. "An Acoustic Array Sensor Signal Recognition Algorithm for Low-Altitude Targets Using Multiple Five-Element Acoustic Positioning Systems with VMD." Applied Sciences 14, no. 3 (2024): 1075. http://dx.doi.org/10.3390/app14031075.
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To solve the problem in target acoustic signal processing and recognition when the target flies at a low altitude based on the acoustic positioning system, which is often affected by external interference and brings false information, this paper proposes a target signal processing and recognition algorithm for low-altitude target acoustic positioning based on variational modal decomposition and the test method of multiple five-element acoustic arrays. This algorithm uses VMD to decompose the target signal into modal components with different central frequencies and then performs wavelet threshold processing on the low-frequency part of the signal. After determining the remaining signal components and the low-frequency part’s threshold, the residual component is reconstructed. Based on the test principle and calculation model of the five-element acoustic positioning system, following processing of the low-altitude target acoustic positioning signal using variational modal decomposition, the cross-correlation function method is introduced to perform correlation operations on the basic array of five acoustic sensors and then obtain the time value and time difference of the target acoustic information in each acoustic sensor, ultimately determining the spatial position of the target. Finally, we used the data fusion processing method for target coordinates in multi-acoustic basic arrays to determine the actual target position. By comparing the results obtained using the high-speed camera method with those of the proposed approach, it was found that the average error in the test area of 100 × 100 m was less than 1 m.
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Wang, Xiao Lin, Wei Hua Han, Han Gu, Cun Hu, and Xing Xing Han. "Research on Rolling Element Bearing Fault Diagnosis Based on EEMD and Correlated Kurtosis." Applied Mechanics and Materials 680 (October 2014): 198–205. http://dx.doi.org/10.4028/www.scientific.net/amm.680.198.
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In order to extract the faint fault information from complicated vibration signal of bearing, the correlated kurtosis is introduced into the field of rolling bearing fault diagnosis. Combined with ensemble empirical mode decomposition (EEMD) and correlated kurtosis, a feature extraction method is proposed. According to the method, by EEMD processing a group of intrinsic mode functions (IMFs) are obtained, then the IMF with maximal correlated kurtosis is selected, and the weak fault signal is clearly extracted. The effectiveness of the method is demonstrated on both simulated signal and actual data.
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Gao, Ai Hua, Fu Rong Wang, and Jian Xin Zhang. "The Finite Element Simulation of Milling Based on Orthogonal Cutting Model." Advanced Materials Research 499 (April 2012): 208–12. http://dx.doi.org/10.4028/www.scientific.net/amr.499.208.
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The paper make the service life of relieving formed milling cutter as the optimization objective, proceed the simulation study on the mechanical degree of cutter, cutting data. The concrete method is that the orthogonal milling model is established to simulate the simulation milling process, some basic parameters which are obtained in the machining process are analyzed and discussed. The results indicate that the finite element simulation of the metal cutting processing can analyze quantitatively some physical properties, such as the cutting force, stress, strain and so on, the traditional way of qualitative analysis is changed. The state of machining is in favour of grasping in the theory, the theory and technology are provided to establish the proper processing technology strategy.
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Xia, Lie Xiang, Yan Zhao, Yong Zhong Ma, and Xiao Ning An. "The Present Development Situation of Laser Ultrasonic Nondestructive Testing Signal Processing System." Advanced Materials Research 532-533 (June 2012): 369–73. http://dx.doi.org/10.4028/www.scientific.net/amr.532-533.369.
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Currently, laser ultrasonic nondestructive testing is the best application prospect of nondestructive testing methods. This paper expounds the mechanism and the qualitative analysis of the common defects of the laser ultrasonic inspection and introduces the application of matching pursuit algorithm guided wave testing technology in signal processing. This paper focuses on the laser ultrasonic detection system and analysis of the detected data using the finite element method.
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Tarkowski, Paweł, Ireneusz Malujda, Krzysztof Talaśka, Jan Górecki, Mateusz Kukla, and Dominik Wilczyński. "Recognition of Seat Elements during Production through Image Processing." Applied Mechanics and Materials 816 (November 2015): 35–42. http://dx.doi.org/10.4028/www.scientific.net/amm.816.35.
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The primary aim of the research, whose results are presented in this article, was to investigate the process of visual identification of objects. The objects recognised under this research were passenger seats for mass transit applications. The system presented in this paper is intended to be incorporated in the production process control system. The problem under analysis is based on the need to recognise (identify) an object located in the process area of the machine before proceeding with the process. Neural network was chosen as the adaptive element due to a high degree of similarity between the semi-products. The function of the network was to check if correct element had been fed. The input data fed to the network was the information from processing the photo images of these elements. The results of research as presented in this article are based on a limited set of elements and present the method used for solving the task of identification.
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Zhang, Xue Chen, Guo Hua Cao, and Feng Ming Nie. "The Application of Adaptive Kalman Filter Technology in Aspheric Surface Machining and Detection." Applied Mechanics and Materials 192 (July 2012): 42–45. http://dx.doi.org/10.4028/www.scientific.net/amm.192.42.
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The grinding machining parameters of large-caliber aspherics ultra-precision grinding processing depend on the analysis of online profile accuracy detection data .and the detection data has the second order of non-stationary characteristic . The research of second order of non-stationary data processing technique and isolate and reduce the random error of online detection data is key technology of ensure the precision of aspheric surface grinding accuracy . This paper proposed a parallel recursive identification of improved adaptive kalman filtering method , the simulation analysis and φ500mm aspheric surface element grinding experiment proved this method can real-time process second order of non-stationary data of online detection data , isolate and reduce the random error , make a best estimate of time-varying signal, provide correction parameter of grinding process , processed aspherical face proflie accuracy≤4μm.