Appell and Sheffer sequences: on their characterizations through functionals and examples by Carrillo, Sergio A., Hurtado, Miguel

Subjects: “…Euler and Hermite <span class="mathjax-formula">$d$</span>-orthogonal polynomials…”
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Precision spectroscopy and comprehensive analysis of perturbations in the A1∏(v=0) state of 13C18O by Hakalla, R., Trivikram, T.M., Heays, A. N., Salumbides, E. J., de Oliveira, N., Field, R. W., Ubachs, W.

“…All information, in total over 900 spectral lines, was included in an effective Hamiltonian analysis of the A[chemical formula] levels that are directly perturbed by the e[chemical formula], d[chemical formula], a[chemical formula], D[chemical formula], I[chemical formula] close-lying levels and the e[chemical formula], d[chemical formula], a[chemical formula] remote levels, as well being indirectly influenced by the a[chemical formula] state. …”
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A universal diagnosis syntax by Carl-Fredrik Bassøe

“…Diagnoses (d) are generated by the formula d:= e&o&p where ‘&’ means concatenation and ‘:= ’ means assignment. …”
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A Toolbox of Subarrays for Optimizing Wide-Angular Scanning Arrays Using Trade-Offs Between Scan Loss and Side Lobe Level by Fannush S. Akbar, L. P. Ligthart, Gamantyo Hendrantoro

“…Optimized broadside and 60&#x00B0; scanning patterns are compared and show improved performance in directive gain <inline-formula> <tex-math notation="LaTeX">$D=24.4$ </tex-math></inline-formula>dBi (broadside), <inline-formula> <tex-math notation="LaTeX">$D=19.9$ </tex-math></inline-formula>dBi (60&#x00B0;) and in <inline-formula> <tex-math notation="LaTeX">$\text {SLL}=-21.6$ </tex-math></inline-formula>dB (broadside), <inline-formula> <tex-math notation="LaTeX">$\text {SLL}=-19.5$ </tex-math></inline-formula>dB (60&#x00B0;).…”
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A GaN-HEMT Active Drain-Pumped Mixer for S-Band FMCW Radar Front-End Applications by Lorenzo Pagnini, Giovanni Collodi, Alessandro Cidronali

“…Measurements carried out in the radar setup resulted in <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>+</mo><mn>39.7</mn><mspace width="0.166667em"></mspace></mrow></semantics></math></inline-formula>dB and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>+</mo><mn>34.7</mn><mspace width="0.166667em"></mspace></mrow></semantics></math></inline-formula>dB of IF signal-to-noise-ratio (SNR) for the DP and the resistive mixers, respectively. …”
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Ka-Band Stacked Power Amplifier Supporting 3GPP New Radio FR2 Band n258 Implemented Using 45 nm CMOS SOI by Janne P. Aikio, Alok Sethi, Mikko Hietanen, Jere Rusanen, Timo Rahkonen, Aarno Pärssinen

“…The frequency of operation is from 20 GHz to 30 GHz, with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>13.7</mn></mrow></semantics></math></inline-formula> dB of maximum gain. The maximum RF (radio frequency) output power (Pout), power-added efficiency (PAE) and output 1 dB compression point are <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>20.5</mn></mrow></semantics></math></inline-formula> dBm, 29% and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>18.8</mn></mrow></semantics></math></inline-formula> dBm, respectively, achieved at 24 GHz. …”
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An Effective Design Scheme of Single- and Dual-Band Power Dividers for Frequency-Dependent Port Terminations by Rahul Gupta, Maher Assaad, Muhammad Akmal Chaudhary, Mohammad Hashmi

“…The single-band impedance transforming power divider (ITPD) possesses a low-amplitude imbalance of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.5</mn></mrow></semantics></math></inline-formula> dB, a phase imbalance of less than ±0.5<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>∘</mo></msup></semantics></math></inline-formula>, and an isolation of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>26</mn></mrow></semantics></math></inline-formula> dB at the design frequency of 5.8 GHz. …”
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Sound Scattering by Gothic Piers and Columns of the Cathédrale Notre-Dame de Paris by Antoine Weber, Brian F. G. Katz

“…Relative levels to the direct sound of backscattered reflections between <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>10</mn></mrow></semantics></math></inline-formula> dB and 2 dB and between <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>15</mn></mrow></semantics></math></inline-formula> dB and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>6</mn></mrow></semantics></math></inline-formula> dB in the transverse directions were estimated for the dimensions considered, relative to reported reflection audibility thresholds. …”
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Design and Evaluation of a Button Sensor Antenna for On-Body Monitoring Activity in Healthcare Applications by Shahid Muhammad Ali, Cheab Sovuthy, Sima Noghanian, Tale Saeidi, Muhammad Faran Majeed, Amir Hussain, Faisal Masood, Shariq Mahmood Khan, Syed Aziz Shah, Qammer H. Abbasi

“…S₁₁ reaches <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>23.07</mn><mo> </mo><mrow><mo>(</mo><mrow><mo>−</mo><mn>27.07</mn></mrow><mo>)</mo></mrow></mrow></semantics></math></inline-formula> dB and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>30.76</mn><mo> </mo><mo stretchy="false">(</mo><mo>−</mo><mn>31.12</mn></mrow></semantics></math></inline-formula>) dB, respectively, with a gain of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.09</mn><mo> </mo><mrow><mo>(</mo><mrow><mn>6.70</mn></mrow><mo>)</mo></mrow></mrow></semantics></math></inline-formula> dBi and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.16</mn><mo> </mo><mrow><mo>(</mo><mrow><mn>5.67</mn></mrow><mo>)</mo></mrow></mrow></semantics></math></inline-formula> dBi, and radiation efficiency of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>65.12</mn><mo> </mo><mrow><mo>(</mo><mrow><mn>81.63</mn></mrow><mo>)</mo></mrow><mo>%</mo></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>75.00</mn><mo> </mo><mrow><mo>(</mo><mrow><mn>85.00</mn></mrow><mo>)</mo></mrow><mo>%</mo></mrow></semantics></math></inline-formula>, when located on the body for the lower and upper bands, respectively. …”
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Comparative Evaluation of Gate Driver and LC-Filter Based dv/dt-Limitation for SiC-Based Motor-Integrated Variable Speed Drive Inverters by Michael Haider, Pascal S. Niklaus, Manuel Madlener, Gwendolin Rohner, Johann W. Kolar

“…This work analytically and experimentally compares different means for d<inline-formula><tex-math notation="LaTeX">$v$</tex-math></inline-formula>/d<inline-formula><tex-math notation="LaTeX">$t$</tex-math></inline-formula>-limitation, namely, a conventional passive LC-d<inline-formula><tex-math notation="LaTeX">$v$</tex-math></inline-formula>/d<inline-formula><tex-math notation="LaTeX">$t$</tex-math></inline-formula>-filter and a Gate Driver (GD)-based approach based on increased GD resistances in combination with explicit Miller capacitors, at the example of a <inline-formula><tex-math notation="LaTeX">$\text {10}$</tex-math></inline-formula>&#x2009;kW industrial motor-integrated VSD. …”
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A 320 μW Multi-Band Receiver with N-Path Switched-Capacitor Networks by Lei Lei, Fang Han, Zicheng Liu, Quanwen Qi, Xinghua Wang, Weijiang Wang

“…The ULP receiver achieves a measured gain of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>40</mn><mo>±</mo><mn>2</mn></mrow></semantics></math></inline-formula> dB in ISM bands (430/860/915/960 MHz). The measured noise figure and out-of-band IIP3 are <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>10</mn><mo>±</mo><mn>0.5</mn></mrow></semantics></math></inline-formula> dB and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>0.3</mn><mo>±</mo><mn>2</mn></mrow></semantics></math></inline-formula> dBm, respectively. …”
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Characterizing sub-glacial hydrology using radar simulations by C. Pierce, C. Gerekos, M. Skidmore, L. Beem, D. Blankenship, W. S. Lee, E. Adams, C.-K. Lee, J. Stutz

“…Large (<span class="inline-formula">&gt;</span> 20 <span class="inline-formula">m</span>), flat canals can increase reflectivity by more than 20 <span class="inline-formula">dB</span>, while equivalent Röthlisberger channels show only modest reflectivity gains of 8–13 <span class="inline-formula">dB</span>. …”
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A Signal Processing Algorithm of Two-Phase Staggered PRI and Slow Time Signal Integration for MTI Triangular FMCW Multi-Target Tracking Radars by Taiwen Tang, Chen Wu, Janaka Elangage

“…This scheme introduces <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>4.77</mn></mrow></semantics></math></inline-formula> dB of extra signal processing gain to the signal before the radar detector compared with the original uniform PRI FMCW radar. …”
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Maximizing Image Information Using Multi-Chimera Transform Applied on Face Biometric Modality by Ahmad Saeed Mohammad, Dhafer Zaghar, Walaa Khalaf

“…In addition, the highest PSNR was <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>27.23</mn></mrow></semantics></math></inline-formula> dB for the proposed scheme on warp facial image of AR database, while the existed methods KLT and WT had <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>24.70</mn></mrow></semantics></math></inline-formula> dB and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>21.79</mn></mrow></semantics></math></inline-formula> dB, respectively.…”
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Fractional PI^<i>λ</i>D Controller Design for a Magnetic Levitation System by Waldemar Bauer, Jerzy Baranowski

“…We illustrate our methods with a case study of the PI<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mi>λ</mi></msup></semantics></math></inline-formula>D controller for the Magnetic Levitation System. …”
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Polarization-Based Gigahertz Near-Field Bio-Sample Detector Prepared by Integrated-Passive-Device Fabrication by Jia-Kang Wu, Ying-Ying Ji, Jun-Ge Liang, Yu-Ting Chen, Cong Wang, Cheng Qian, Yang-Fan Sun, Cai-Li Ren, Svetlana Von Gratowski

“…The concentration of glucose solution changes from 50 mg<inline-formula> <tex-math notation="LaTeX">$\cdot $ </tex-math></inline-formula>dL<inline-formula> <tex-math notation="LaTeX">$^{-1}$ </tex-math></inline-formula> to 150 mg<inline-formula> <tex-math notation="LaTeX">$\cdot $ </tex-math></inline-formula>dL<inline-formula> <tex-math notation="LaTeX">$^{-1}$ </tex-math></inline-formula>. …”
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OpenMRG: Open data from Microwave links, Radar, and Gauges for rainfall quantification in Gothenburg, Sweden by J. C. M. Andersson, J. Olsson, R. (C. Z. ). van de Beek, J. Hansryd

“…Here we illustrate this for 28 July, where a nearby CML recorded a drop in received signal level of about 27 <span class="inline-formula">dB</span> at the time of the peak. The radar data showed a good distribution of reflectivities for mostly stratiform precipitation but also contained some values above 40 <span class="inline-formula">dBZ</span>, which is commonly seen as an approximate threshold for convective precipitation. …”
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A climate data record of year-round global sea-ice drift from the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSI SAF) by T. Lavergne, E. Down

“…The CDR consists of daily product files holding the <span class="inline-formula">d<i>X</i></span> and <span class="inline-formula">d<i>Y</i></span> components of the drift vectors on an Equal-Area Scalable Earth (EASE2) grid with 75 km spacing as well as associated uncertainties and flags. …”
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Design of a Six-Port Compact UWB MIMO Antenna With a Distinctive DGS for Improved Isolation by Praveen Kumar, Sameena Pathan, Om Prakash Kumar, Shweta Vincent, Yashwanth Nanjappa, Pradeep Kumar, Pranav Shetty, Tanweer Ali

“…The values of the diversity parameters such as ECC &#x003C; 0.075, DG approximately 10 dB, MEG<inline-formula> <tex-math notation="LaTeX">$ &lt; -3$ </tex-math></inline-formula>dB, TARC<inline-formula> <tex-math notation="LaTeX">$ &lt; -10$ </tex-math></inline-formula> dB, CCL &#x003C; 0.3 bps/Hz, and ME<inline-formula> <tex-math notation="LaTeX">$ &lt; -2$ </tex-math></inline-formula> dB ensure that the projected design is appropriate for the MIMO applications. …”
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Quantitative impacts of vertical transport on the long-term trend of nocturnal ozone increase over the Pearl River Delta region during 2006–2019 by Y. Wu, Y. Wu, W. Chen, W. Chen, Y. You, Y. You, Q. Xie, Q. Xie, S. Jia, X. Wang, X. Wang

“…Annual NOI events exhibit an upward trend before 2011 (4.70 <span class="inline-formula">d yr⁻¹</span>) and a downward trend thereafter (<span class="inline-formula">−</span>0.72 <span class="inline-formula">d yr⁻¹</span>), which is consistent with the annual variation of LLJs (<span class="inline-formula"><i>r</i>=0.88</span>, <span class="inline-formula"><i>p</i>&lt;0.01</span>). …”
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