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261
An Ultra-Low Power, Adaptive All-Digital Frequency-Locked Loop With Gain Estimation and Constant Current DCO
Published 2020-01-01“…The experimental results reveal, DCO draws <inline-formula> <tex-math notation="LaTeX">$480~\mu \text{A}$ </tex-math></inline-formula> current from 0.55 V supply voltage at center frequency. …”
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262
On the Evidence of Dynamical Dark Energy
Published 2024-12-01“…While the DESI BAO data slightly tightens the constraints on model parameters and increases the tension between the Chevallier–Polarski–Linder (CPL) model and the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mo>Λ</mo></semantics></math></inline-formula>CDM model, we find that the influence of DESI BAO data on the constraint of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>w</mi><mn>0</mn></msub></semantics></math></inline-formula> is small in the SSLCPL model. …”
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263
Characterization and Selection of WiFi Channel State Information Features for Human Activity Detection in a Smart Public Transportation System
Published 2024-01-01“…The reported classification results show that using only the chirp rate estimated from CSI information as a feature, we achieve precision = 83%, True Positive <inline-formula> <tex-math notation="LaTeX">$(TP)=94\%$ </tex-math></inline-formula>, True Negative <inline-formula> <tex-math notation="LaTeX">$(TN)= 91\%$ </tex-math></inline-formula> and F1-score = 87%. …”
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264
PSO-Aided Inverse Design of Silicon Modulator
Published 2024-01-01“…To tackle this issue, the idea of inverse design, widely adopted in passive photonic devices, can be employed in silicon active devices. As a result, we incorporate the inverse design method with the particle swarm optimization (PSO) algorithm and achieve a G-shaped doping profile for the modulator, exhibiting superior <inline-formula><tex-math notation="LaTeX">$V_{\pi } L$</tex-math></inline-formula> of 0.68 V<inline-formula><tex-math notation="LaTeX">$\cdot$</tex-math></inline-formula>cm and low loss of 9.3 dB/cm. …”
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265
Optimization of the Screw Conveyor Device Based on a GA-BP Neural Network
Published 2025-01-01“…The experimental results indicated that the model’s prediction results were reliable and exhibited higher efficiency compared to other combinations. …”
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266
FORMULATION OF CREAM BODY SCRUB FROM ETHANOL EXTRACT OF CASSAVA LEAVES (Manihot esculenta) AS ANTIOXIDANT
Published 2020-07-01“…Determination of antioxidant activity by the method of reduction of free radical DPPH (1,1-diphenyl-2-picryl-hydrazyl). Result : The ethanol extract of cassava leaves are formulated into dosage cream body scrub with concentration variations 0,0085 mg/mL (formula 1), 0,017 mg/mL (formula 2), and 0,0255 mg/mL (formula 3). …”
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267
Reliable Quantized Fuzzy Controller Design for Nonlinear Singularly Perturbed Systems With Markovian Jumps and Dynamic Event Triggered Mechanism
Published 2025-01-01“…The proposed approach is based on the following key attributes: 1) An event-triggered mechanism that establishes a suitable condition for independent signal transmission from each sensor node to the controller; 2) A stochastic failure model that describes actuator failures; 3) A non-stationary Markov chain that reflects the asynchronous relationship between the system and controller modes; 4) A mode-dependent Lyapunov function is used to establish sufficient conditions to show that the resultant closed-loop system is stochastically mean-square stable with a <inline-formula> <tex-math notation="LaTeX">$\gamma $ </tex-math></inline-formula> level of <inline-formula> <tex-math notation="LaTeX">$ l_{2}-l_{\infty } $ </tex-math></inline-formula> performance index; 5) The theoretical findings are validated by a real numerical example of the Van Der Pol circuit, confirming the effectiveness of the proposed strategy.…”
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268
Reconfigurable mmWave Planar Phased Array Featuring Wide Elevation and Full Azimuth Spatial Coverage for 5G Vehicular Application
Published 2025-01-01“…During simulation, the array demonstrates isolation levels surpassing 20 dB and exhibits a broad <inline-formula> <tex-math notation="LaTeX">$-10 \, \text {dB}$ </tex-math></inline-formula> impedance bandwidth spanning <inline-formula> <tex-math notation="LaTeX">$6570 \, \text {MHz}~(24.36$ </tex-math></inline-formula>–<inline-formula> <tex-math notation="LaTeX">$30.93 \, \text {GHz}$ </tex-math></inline-formula>). …”
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269
Voltage Reference and Voltage Regulator for the Cryogenic Performance Evaluation of the 22nm FDSOI Technology
Published 2024-01-01“…Our experimental results indicate that the cryogenic <inline-formula> <tex-math notation="LaTeX">$V_{\text {th}}$ </tex-math></inline-formula> saturation and the <inline-formula> <tex-math notation="LaTeX">$g_{m}$ </tex-math></inline-formula> increase can be used as circuit design tools, while the LF excess noise is a performance handicap for cryogenic analog circuits.…”
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270
High Stability Single-Port Dual Band Microwave Sensor Based on Interdigital Capacitor Structure With Asymmetry Branch Feedline
Published 2025-01-01“…Based on the measurement results, the sensor has high stability both without and with disturbance with an a Frequency Detection Resolution (FDR) of 0.009 - 0.4 GHz/<inline-formula> <tex-math notation="LaTeX">$\Delta \varepsilon _{\mathrm {r}}$ </tex-math></inline-formula>, a Normalized Sensitivity (NS) of 0.4% - 4.4%, and an average accuracy of 90% - 95% for both resonance frequencies, respectively. …”
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271
Office BP measurement using conical cuffs in children and adolescents with obesity
Published 2024-12-01“…Arm circumference AC was measured in all participants, and the appropriate cuff size was selected for both conical and cylindrical cuffs.Results Mean participants’ age was 11.8[Formula: see text]2.5 years, mean BMI was 28.8[Formula: see text]3.4 kg/m2, mean BMI z-score was 2.12[Formula: see text]0.32, and mean AC was 30.0[Formula: see text]3.6 cm. …”
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272
Impact of Key DMD Parameters on Modal Analysis of High-Reynolds-Number Flow Around an Idealized Ground Vehicle
Published 2025-01-01“…Key findings show that a 90% contribution to the pressure drag comes from modes with a frequency of less than 26 Hz (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>S</mi><mi>t</mi></mrow></semantics></math></inline-formula> = 0.187), while the friction drag requires 84 Hz (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>S</mi><mi>t</mi></mrow></semantics></math></inline-formula> = 0.604) for similar energy capture. …”
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273
Assessment framework to predict sensitivity of marine calcifiers to ocean alkalinity enhancement – identification of biological thresholds and importance of precautionary principle...
Published 2025-01-01“…Predicted responses were categorized into six different categories (linear positive and negative, threshold positive and negative, parabolic and neutral) to delineate responses per species. The results show that 34.4 % of responses are predicted to be positive (<span class="inline-formula"><i>N</i>=33</span>), 26.0 % negative (<span class="inline-formula"><i>N</i>=25</span>), and 39.2 % (<span class="inline-formula"><i>N</i>=38</span>) neutral upon alkalinity addition. …”
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274
Aerosol layer height (ALH) retrievals from oxygen absorption bands: intercomparison and validation among different satellite platforms, GEMS, EPIC, and TROPOMI
Published 2025-01-01“…Given the significant role of aerosol optical depth (AOD) in ALH retrieval, we first evaluate the AOD from these retrievals against the ground-based AErosol RObotic NETwork (AERONET). Results show that the GEMS AOD at 440 nm has better agreement with the AERONET AOD of the <span class="inline-formula">∼</span> 0.9 correlation coefficient (<span class="inline-formula"><i>R</i></span>) than that at 680 nm, both of which underestimate with a negative bias. …”
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275
Friction-Induced Pain: From Skin Surface to Brain Activation
Published 2025-01-01“…The features of <inline-formula> <tex-math notation="LaTeX">$\alpha $ </tex-math></inline-formula> activity, <inline-formula> <tex-math notation="LaTeX">$\beta $ </tex-math></inline-formula> activity, and <inline-formula> <tex-math notation="LaTeX">$\alpha _{\text {peak}}$ </tex-math></inline-formula> extracted from EEG signals were effective in the recognition of pain state, but cannot recognize the pain intensities.…”
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276
The ASK-16 motorized glider: an airborne eddy covariance platform to measure turbulence, energy, and matter fluxes
Published 2025-02-01“…The uncertainty of <span class="inline-formula"><i>w</i></span> is between 0.15 and 0.27 m s<span class="inline-formula"><sup>−1</sup></span> (median <span class="inline-formula">=</span> 0.23 m s<span class="inline-formula"><sup>−1</sup></span>), and the uncertainty of <span class="inline-formula"><i>u</i></span> and <span class="inline-formula"><i>v</i></span> ranges between 0.16 and 0.55 m s<span class="inline-formula"><sup>−1</sup></span> (median <span class="inline-formula">=</span> 0.25 m s<span class="inline-formula"><sup>−1</sup></span>). …”
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277
Creep enhancement and sliding in a temperate, hard-bedded alpine glacier
Published 2025-01-01“…We interpret this creep factor enhancement as an effect of increasing interstitial water content with depth (from 0 % to 1.3 %), which results in an average value of <span class="inline-formula"><i>A</i>=148</span> MPa<span class="inline-formula"><sup>−3</sup></span> a<span class="inline-formula"><sup>−1</sup></span>. …”
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278
Field heterogeneity of soil texture controls leaf water potential spatial distribution predicted from UAS-based vegetation indices in non-irrigated vineyards
Published 2025-01-01“…Our results demonstrated that in non-irrigated vineyards, the spatial distribution of <span class="inline-formula">Ψ<sub>leaf</sub></span> was mainly governed by the within-vineyard soil hydraulic conductivity heterogeneity (<span class="inline-formula"><i>R</i><sup>2</sup></span> up to 0.81) and was particularly marked when the evaporative demand and the soil water deficit increased, since the range of <span class="inline-formula">Ψ<sub>leaf</sub></span> was greater, up to 0.73 MPa, in these conditions. …”
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279
A Pilot Study on the Age-Dependent, Biomechanical Properties of Longitudinal Ligaments in the Human Cervical Spine
Published 2025-01-01“…The investigation concentrated on the effects of age on four mechanical parameters of the uniaxial stress–stretch curve: initial tangent stiffness (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>E</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></semantics></math></inline-formula>), maximum tangent stiffness (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>m</mi></mrow></msub></mrow></semantics></math></inline-formula>), ultimate stress (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>P</mi></mrow><mrow><mi>u</mi></mrow></msub></mrow></semantics></math></inline-formula>) and ultimate stretch (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>λ</mi></mrow><mrow><mi>u</mi></mrow></msub></mrow></semantics></math></inline-formula>). …”
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280
Optimization of Shear-Thickening Polishing Parameters for Optical Glass Based on Grey Relational Analysis
Published 2025-01-01“…Sixteen orthogonal experiments were conducted to assess the effects of polishing speed (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>V</mi></mrow></semantics></math></inline-formula>), angle (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>θ</mi></mrow></semantics></math></inline-formula>), and slurry concentration (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>C</mi></mrow></semantics></math></inline-formula>) on the material removal rate (MRR) and surface roughness (Ra). …”
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