A Classification System to Detect Congestive Heart Failure Using Second-Order Difference Plot of RR Intervals by R. A. Thuraisingham

“…A classification system to detect congestive heart failure (CHF) patients from normal (N) patients is described. …”
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First- and Second-Order Full-Differential in Edge Analysis of Images by Dong-Mei Pu, Yu-Bo Yuan

“…Based on our observation and analysis with the difference, we propose an algorithm to detect the edge from image. Experiments on Corel5K and PASCAL VOC 2007 are done to show the difference between the first order and the second order. …”
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Computational Construction of Sequential Efficient Designs for the Second-Order Model by Norah Alshammari, Stelios Georgiou, Stella Stylianou

“…This paper presents a model-driven approach to sequential Latin hypercube designs (SLHDs) tailored for second-order models. Unlike traditional model-free SLHDs, our method optimizes a conditional A-criterion to improve efficiency, particularly in higher dimensions. …”
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Weak Fault Detection for Rolling Bearings in Varying Working Conditions through the Second-Order Stochastic Resonance Method with Barrier Height Optimization by Huaitao Shi, Yangyang Li, Peng Zhou, Shenghao Tong, Liang Guo, Baicheng Li

“…When the fault frequency changes in variable working conditions, the signal processing effect becomes different with fixed parameters, leading to errors in fault detection. In this paper, an underdamped second-order adaptive general variable-scale stochastic resonance (USAGVSR) method with potential well parameters’ optimization is put forward. …”
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An Improved Phase-locked Loop Based on Second-order Generalized Integrator by QIU Lebing, TANG Jianyu, CAO Yang, LUO Renjun, XU Wanliang, LIN Li

“…Under ideal grid voltage conditions, single synchronous reference frame phase-locked loop (SSRF-PLL) enables fast and accurate phase/frequency detection, however, abnormal grid voltage conditions highly degrade its performance. …”
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PMSM Position Sensorless Control Based on Improved Second-Order SOIFO by Ge Song, Hongyu Ni, Wenyuan Wang, Wenxu Yan

“…To address these issues, two flux observers, the second-order generalized integrator flux observer (SOIFO) and the second-order SOIFO, are designed for position sensorless control of permanent magnet synchronous motors (PMSMs). …”
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Second Order Coherence: A new way of looking at incoherence in texts by Ib Ulbaek

“…It is shown how readers can detect these structures in the text by detecting the incoherence even without the layout of the text to signal structure (e.g. indention of paragraphs). …”
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A Second-Order Fast Discharge Circuit for Transient Electromagnetic Transmitter by Chao Tan, Shibin Yuan, Linshan Yu, Yaohui Chen, Changjiang He

“…Finally, the parameters of the resistor and capacitor were selected by finding the optimal solution for the fixed transmitter coil. …”
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A Hybrid Mechanism to Detect DDoS Attacks in Software Defined Networks by ÙAfsaneh Banitalebi Dehkordi, MohammadReza Soltanaghaei, Farsad Zamani Boroujeni

“…Given the importance of this issue,the purpose of this paper is to increase the accuracy of DDoS attack detection using the second order correlation coefficient technique based on â…-entropy according to source IP and selection of optimal features.To select the best features, by examining the types of feature selection algorithms and search methods, the WrapperSubsetEval feature selection algorithm, the BestFirst search method, and the best effective features were selected. …”
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All-Fiber Multiplexing and Transmission of High-Order Circularly Polarized Orbital Angular Momentum Modes With Mode Selective Couplers by Junfeng Yang, Huanhuan Liu, Fufei Pang, Jianxiang Wen, Haoqiang Zheng, Lifei Chen, Xinyu He, Yana Shang, Na Chen, Yingchun Li, Tingyun Wang

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Enhanced criteria for detecting oscillations in neutral delay Emden-Fowler differential equations by Maryam Al-Kandari

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A Method for Predicting Coal-Mine Methane Outburst Volumes and Detecting Anomalies Based on a Fusion Model of Second-Order Decomposition and ETO-TSMixer by Qiangyu Zheng, Cunmiao Li, Bo Yang, Zhenguo Yan, Zhixin Qin

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Perspectives of Second-Order Blind Identification for Operational Modal Analysis of Civil Structures by C. Rainieri

“…In the present paper attention is focused on the second-order blind identification (SOBI) algorithm and the influence of its analysis parameters on computational time and accuracy of modal parameter estimates. …”
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Assessment of Patellar Tendon Reflex Responses Using Second-Order System Characteristics by Brett D. Steineman, Pavan Karra, Kiwon Park

“…This study confirmed that PTR responses strongly correlate to a second-order system and that exponential decay rate and undamped natural frequency are novel measurement variables to accurately measure PTR responses. …”
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SVM-Assisted Realization and Demonstration of Indoor 4 Mb/s Non-Line-of-Sight Visible Light Communication With Second-Order Reflection by Yonghe Zhu, Chen Gong, Jianghua Luo, Zhengyuan Xu, Weiqiang Xu

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An efficient second‐order neural network model for computing the Moore–Penrose inverse of matrices by Lin Li, Jianhao Hu

“…In this paper, an efficient second‐order neural network model with the improved Newton's method is proposed to obtain the accurate Moore–Penrose inverse of an arbitrary matrix by one epoch without any learning parameter. …”
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The Supply Side of Second-Order Elections in the Czech Republic: A Light at the End of the Tunnel? by Jan Kovar

“…To this aim, a content analysis is conducted, within a comparative framework, of selected Czech political parties’ programmatic documents. …”
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Design of Second-Order Sliding Mode Guidance Law Based on the Nonhomogeneous Disturbance Observer by Huibo Zhou, Shenmin Song, Junhong Song, Jing Niu

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Development of second-order three-node triangular element with drilling and strain degrees of freedom by Koshi KIMURA, Yasuyuki KANDA

“…In this study, a second-order three-node triangular element with drilling and strain degrees of freedom (DOF) (GNTri3-2nd) was developed. …”
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A Contrast-Enhanced Approach for Aerial Moving Target Detection Based on Distributed Satellites by Yu Li, Hansheng Su, Jinming Chen, Weiwei Wang, Yingbin Wang, Chongdi Duan, Anhong Chen

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