Category: Engineering

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  • Comparative analysis of heart disease prediction using logistic regression, SVM, KNN, and random forest with cross-validation for improved accuracy

    Comparative analysis of heart disease prediction using logistic regression, SVM, KNN, and random forest with cross-validation for improved accuracy

    After designing the data sets, the correlation between dependent and independent variables is described using a heatmap (final2.corr(), cmap=’cool warm’) in the case of displaying each correlation value. The sns. heatmap (final2.corr(),…

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  • Comparison of feetme insoles with a motion capture system coupled to force plates for assessing gait and posture

    Comparison of feetme insoles with a motion capture system coupled to force plates for assessing gait and posture

    Study objectives

    The main objective of this study was to demonstrate the equivalence of the measurements obtained by the FeetMe insoles to those acquired by the MoCap/FP system during the static stabilometry and walking tests. The following gait…

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  • Numerical and experimental study on cavitation and noise characteristics of electronic expansion valve

    Numerical and experimental study on cavitation and noise characteristics of electronic expansion valve

    Mathematical model

    The flow area of the electronic expansion valve experiences abrupt contraction and expansion, leading to a pronounced throttling effect. As a result, the valve exhibits notable characteristics such as phase transition, vortex…

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  • A method to design polarization reconfigurable antenna with simple switching mechanism and compact size characteristics

    A method to design polarization reconfigurable antenna with simple switching mechanism and compact size characteristics

    Antenna design

    In this section, a polarization reconfigurable antenna is introduced as an extension of the passive design. Figure 4 presents the geometry of different layers of the proposed reconfigurable structure. For dual-CP realization, the CP…

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  • Electric-field sensing with driven-dissipative time crystals in room-temperature Rydberg vapor

    Electric-field sensing with driven-dissipative time crystals in room-temperature Rydberg vapor

    Mean-field dynamics with RF near OSC frequencies

    The simplified model developed is aimed at providing a qualitative description of RF coupling with quantitative predictions of RF bandwidth of the emergent transition. The qualitative approach…

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  • Design and validation of a novel multiple sites signal acquisition and analysis system based on pressure stimulation for human cardiovascular information

    Design and validation of a novel multiple sites signal acquisition and analysis system based on pressure stimulation for human cardiovascular information

    Based on the frequency requirements of each-channel signal, different sample frequencies, shown in Table 1, are implemented in the system for different types of signals. When starting cardiovascular information collection by this system, it is…

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  • Research on the connectivity reliability analysis and optimization of natural gas pipeline network based on topology

    Research on the connectivity reliability analysis and optimization of natural gas pipeline network based on topology

    The connectivity reliability of a natural gas pipeline network refers to the ability to maintain a connection between gas sources and consumption nodes, ensuring that at least one path exists between any two points in the system. This measure…

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  • Seasonal, weekly, and individual variations in long-term use of wearable medical devices for diabetes management

    Seasonal, weekly, and individual variations in long-term use of wearable medical devices for diabetes management

  • Keshet, A., Reicher, L., Bar, N. & Segal, E. Wearable and digital devices to monitor and treat metabolic diseases. Nature Metabolism 5, 563–571 (2023).

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  • Lu, L. et…

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