Results 171 to 180 of about 439,454 (357)

Multi‐Risk‐Level Sarcopenia‐Prone Screening via Machine Learning Classification of Sit‐to‐Stand Motion Metrics from Wearable Sensors

open access: yesAdvanced Intelligent Systems, EarlyView.
A machine learning approach utilizes micro inertial measurement units (μIMUs) for noninvasive sarcopenia screening through a sit‐to‐stand test. With 53 older participants wearing IMUs, 510 features are extracted across four motion phases. Five algorithms (support vector machine, K‐nearest neighbors, decision tree, linear discriminant analysis, and ...
Keer Wang   +11 more
wiley   +1 more source

Liveness‐Verified Dynamic Time Warping‐Based Authentication and Hybrid Adaptive Neuro‐Fuzzy Inference System Identification for Single‐Channel Diaphragmatic Breathing Surface Electromyography Biometrics

open access: yesAdvanced Intelligent Systems, EarlyView.
The first biometric framework to harness dynamic time warping (DTW) for single‐channel diaphragmatic surface electromyography authentication via post‐hoc alignment is presented. By optimally warping deep–normal–deep breath cycles, DTW achieves perfect genuine–impostor separation (equal error rates = 0%), while a parallel adaptive neuro‐fuzzy inference ...
Beyza Eraslan   +2 more
wiley   +1 more source

Memimpedance‐Based Biomolecular Device for Adaptive Physical Reservoir Computing

open access: yesAdvanced Intelligent Systems, EarlyView.
By integrating fast‐switching ion‐channel‐based memristive and slow‐switching biomembrane‐based memcapacitive nodes within droplet interface bilayers, this hybrid memimpedance reservoir overcomes the memory‐nonlinearity trade‐off and extends temporal adaptability.
Ahmed S. Mohamed   +3 more
wiley   +1 more source

Light‐Mediated Decomposition of Arylseleninic Acids in Aqueous Medium: A Green Alternative Toward Organoselenium‐Functionalized Imidazo[1,2‐a]pyridines

open access: yesAsian Journal of Organic Chemistry, EarlyView.
A new protocol to prepare 2‐aryl‐3‐(arylselanyl)imidazo[1,2‐a]pyridines under blue light irradiation, using benzeneseleninic acid derivatives as selenium source, is described. The experimental design approach (DoE) was used to establish the best reaction conditions, which delivered fourteen derivatives in moderate to good yields (23%–75%) using water ...
Caroline S. Gomes   +6 more
wiley   +1 more source

On the Ulam-Hyers stability of a quadratic functional equation

open access: yesJournal of Inequalities and Applications, 2011
The Ulam-Hyers stability problems of the following quadratic equation r 2 f x + y r + r 2 f x - y r = 2 f ( x ) + 2 f ( y ) , where r is a nonzero rational number, shall be treated.
Park Won-Gil   +2 more
doaj  

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