Results 51 to 60 of about 29,745 (305)

A Note on the Asymptotic Efficiency of an Asymptotically Normal Estimator Sequence [PDF]

Journal of the Royal Statistical Society Series B: Statistical Methodology, 1963
SUMMARY This paper gives a rigorous yet quite elementary proof that under fairly general conditions, the asymptotic efficiency of an asymptotically normal estimator sequence does not exceed unity. Both estimation of a single parameter and simultaneous estimation of several parameters are considered.
openaire   +2 more sources

Intimate Interaction Between Nucleic Acid and Conjugated Polymers in Organic Electrochemical Transistors Enables Ultrasensitive Biomarker Detection

Advanced Materials, EarlyView.
The intimate interaction between negatively charged RNA molecules and conjugated polymers in organic electrochemical transistors (OECTs) in aqueous electrolytes is investigated. It demonstrates that RNA binding reduces the volumetric capacitance of the polymer channel, enabling the development of an ultrasensitive biosensing platform capable of ...
Hong Liu, Naixiang Wang, Anneng Yang, Jiajun Song, Li Li, Iain McCulloch, Helen Ka‐wai Law, Feng Yan   +7 more
wiley   +1 more source

Benchmarking Coaxial and Angular Optical Emission Spectroscopy With Recommendations for Reliable Compositional In Situ Monitoring During Laser Powder Bed Fusion

Advanced Materials Technologies, EarlyView.
ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel, Bastian Jülich, Anna Rosa Ziefuss, Florian Eibl, Stephan Barcikowski   +4 more
wiley   +1 more source

Optimal Homotopy Asymptotic and Multistage Optimal Homotopy Asymptotic Methods for Solving System of Volterra Integral Equations of the Second Kind

Journal of Applied Mathematics, 2019
In this paper, optimal homotopy asymptotic method (OHAM) and its implementation on subinterval, called multistage optimal homotopy asymptotic method (MOHAM), are presented for solving linear and nonlinear systems of Volterra integral equations of the ...
Jafar Biazar, Roya Montazeri
doaj   +1 more source

Ultrafast (1‐5 sec) Lamination of Perovskite Solar Cells With Self‐Encapsulation Using Rapid Joule Heating

Advanced Materials Technologies, EarlyView.
Halide perovskite solar cells are fabricated with self‐encapsulation by lamination between two glass substrates using rapid Joule heating, yielding a 99% reduction in lamination time compared to previous studies. An 18% efficient cell is laminated in 5 s, demonstrating the potential for scalable manufacturing. ABSTRACT Perovskite solar cells (PSCs) are
Oluka Okia, Md Aslam Uddin, Tianhan Gao, Zhihang Zhang, Vaishnav Madhava Das, Clare L. Lanaghan, Alexandra C. Hurd, Wei Lu, David P. Fenning, Neil P. Dasgupta   +9 more
wiley   +1 more source

Concavity Approximation Based Power Allocation in Millimeter-Wave MIMO Systems

IEEE Access, 2017
This paper investigates the power allocation in millimeter-wave multiple-input multiple-output systems. The asymptotic concavity of the sum rate of the system is utilized to form the proposed power allocation approach.
Anzhong Hu, Peng Pan
doaj   +1 more source

Discovering asymptotic expansions for problems in mechanics using symbolic regression

Recently, symbolic regression (SR) has demonstrated its efficiency for discovering basic governing relations in physical systems. A major impact can be potentially achieved by coupling symbolic regression with asymptotic methodology.
Abdusalamov, Rasul, Kaplunov, Julius, Itskov, Mikhail   +2 more
core   +1 more source

Understanding Ionic Flow in Nanofluidic Blind‐Hole Anodic Aluminum Oxide (AAO) Membranes for Osmotic Energy Generation

Advanced Materials Technologies, EarlyView.
Anodic aluminum oxide (AAO) membranes have traditionally served as structural supports in osmotic energy systems. Here, blind‐hole AAO membranes are demonstrated as active ion‐selective platforms with tunable nanopore structures. By balancing membrane resistance, ion selectivity, and flux, enhanced performance is achieved, delivering a maximum power ...
Khanh Nhien Vu, Charles Lord, Juan Wang, Andrew D. Abell, Woo Lee, Abel Santos, Cheryl Suwen Law   +6 more
wiley   +1 more source

Asymptotic Analysis of Backlog Estimates for Dynamic Frame Aloha

Journal of Communications Software and Systems, 2016
In this paper a new analysis is presented that allowsto investigate the asymptotic behavior of some backlog estimation procedures for Dynamic Frame Aloha (DFA) in Radio Frequency Identification (RFID) environment.
Luca Barletta, Flaminio Borgonovo, Ilario Filippini   +2 more
doaj  

Zigzag approach to higher key rate of sending-or-not-sending twin field quantum key distribution with finite-key effects

New Journal of Physics, 2020
Odd-parity error rejection (OPER), in particular the method of actively odd parity pairing (AOPP), can drastically improve the asymptotic key rate of sending-or-not-sending twin-field (SNS-TF) quantum key distribution (QKD).
Cong Jiang, Xiao-Long Hu, Hai Xu, Zong-Wen Yu, Xiang-Bin Wang   +4 more
doaj   +1 more source