Results 131 to 140 of about 175,146 (298)

Simulation and Estimation of Loss Given Default [PDF]

The aim of our paper is the development of an adequate estimation model for the loss given default, which incorporates the empirically observed bimodality and bounded nature of the distribution. Therefore we introduce an adjusted Expectation Maximization
Sebastian Ostrowski, Stefan Hlawatsch
core  

Flow‐Adaptive Gas Sensing Enabled Using a Uniform Au Nanosheet Sensor Array and a Neural Network Inference

Advanced Materials Technologies, EarlyView.
Integrated Au nanosheet sensor array enables simultaneous inference of gas concentration and flow rate via deep neural network analysis, without external flow control. ABSTRACT Gas sensor responses are considerably affected by gas flow rates, thereby inhibiting the accurate detection of target gas concentrations in variable‐flow applications such as ...
Taro Kato, Takahisa Tanaka, Yusuke Hamanaka, Ryo Toyoshima, Ken Uchida   +4 more
wiley   +1 more source

Analytical quasi maximum likelihood inference in multivariate volatility models [PDF]

Quasi maximum likelihood estimation and inference in multivariate volatility models remains a challenging computational task if, for example, the dimension is high.
Hafner, C.M., Herwartz, H.
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Analysis, Estimation, and Practical Implementations of the Discrete Power Quasi-Xgamma Distribution

Journal of Mathematics
In this study, we introduce a new three-parameter discrete power quasi-Xgamma (DPQXg) distribution. A detailed analysis of the mathematical and statistical properties of the DPQXg distribution demonstrates various important features. It has been observed
Muhammad Ahsan-ul-Haq, Muhammad N. S. Hussain, Ayesha Babar, Laila A. Al-Essa, Mohamed S. Eliwa   +4 more
doaj   +1 more source

QML estimation of a class of multivariate GARCH models without moment conditions on the observed process [PDF]

We establish the strong consistency and asymptotic normality of the quasi-maximum likelihood estimator of the parameters of a class of multivariate GARCH processes. The conditions are mild and coincide with the minimal ones in the univariate case.
Francq, Christian, Zakoian, Jean-Michel
core   +1 more source

Flexible Chemiresistive Chitosan‐Glycerol Sensors on Laser‐Induced Graphene Electrodes for Room‐Temperature Ammonia Detection

Advanced Materials Technologies, EarlyView.
Flexible Chitosan‐glycerol sensor integrated with porous laser‐induced graphene (LIG) electrodes enable room‐temperature chemiresistive detection of ammonia (NH3) and proof‐of‐concept detection of fish spoilage. ABSTRACT We report a metal‐free sensor platform combining laser induced graphene (LIG) electrodes with drop‐deposited, glycerol‐plasticized ...
Mintesinot Tamiru Mengistu, Richard Murray, Cara‐Lena Nies, Cathal Larrigy, Martina Piletti, Jahidul Islam, Daniela Iacopino, Eileen Hurley, Michael Nolan, Aidan J. Quinn   +9 more
wiley   +1 more source

Highly Anisotropic Quasi‐Direct Organic Metal Halide Hybrids: A Platform for Polarization‐Sensitive Optoelectronics

Advanced Materials Technologies, EarlyView.
One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee, Rafael R. Del Grande, Yeonjoo Lee, Jinkyoung Yoo, Azza Ben‐Akacha, Biwu Ma, Michael T. Pettes, David A. Strubbe   +7 more
wiley   +1 more source

Hierarchical Multi‐Material Architectures With Gradient Design for Dynamic‐Range Flexible Tactile Sensing

Advanced Materials Technologies, EarlyView.
Hierarchical multi‐material TPMS lattices are engineered as flexible tactile sensors by combining soft and stiff elastomeric layers with a conformal conductive coating. The bilayer architecture delivers sensitivity at low pressures while maintaining a broad detectable range under large loads, enabling reliable pressure and vibration monitoring for ...
Reza Noroozi, Domenic Quiquero, Yan Yan Shery Huang, HaoTian Harvey Shi   +3 more
wiley   +1 more source

Disentangling Vibronic Coupling and Conformational Disorder in Flexible NDI–T2 Donor–Acceptor Co‐Oligomers

Advanced Optical Materials, EarlyView.
This work uses a first‐principles‐parameterized vibronic model combined with matrix‐product‐state simulations to reveal how coupled excitonic and vibrational interactions give rise to the unusually broad visible absorption in naphthalene‐diimide–bithiophene copolymers.
Maximilian F. X. Dorfner, Ajeet Kumar, Erling Thyrhaug, Rukiya Matsidik, Michael Sommer, Jürgen Hauer, Frank Ortmann   +6 more
wiley   +1 more source