Results 1 to 10 of about 6,519,461 (316)
Asymptotic Stability of Solutions to a Class of Second-Order Delay Differential Equations
Mathematics, 2021 We consider a class of second-order nonlinear delay differential equations with periodic coefficients in linear terms. We obtain conditions under which the zero solution is asymptotically stable. Estimates for attraction sets and decay rates of solutions
Gennadii V. Demidenko +1 more
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On the Cauchy Problem for Pseudohyperbolic Equations with Lower Order Terms
Mathematics, 2023 We consider a class of strictly pseudohyperbolic equations with lower order terms. The solvability of the Cauchy problem in Sobolev spaces with special weights is established. The uniqueness of the solution is proven and estimates are obtained.
Lina N. Bondar, Gennadii V. Demidenko
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Synthetic Difference-in-Differences [PDF]
American Economic Review, 2021 We present a new estimator for causal effects with panel data that builds on insights behind the widely used difference-in-differences and synthetic control methods. Relative to these methods we find, both theoretically and empirically, that this “synthetic difference-in-differences” estimator has desirable robustness properties, and that it performs ...
Arkhangelsky, Dmitry +4 more
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Instrumented Difference-in-Differences
Biometrics, 2022 AbstractUnmeasured confounding is a key threat to reliable causal inference based on observational studies. Motivated from two powerful natural experiment devices, the instrumental variables and difference-in-differences, we propose a new method called instrumented difference-in-differences that explicitly leverages exogenous randomness in an exposure ...
Ting Ye +4 more
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Comparative study regarding agility between u18 and u16 handball players from university sports club of Suceava [PDF]
Annals of the “Ştefan cel Mare” University: Physical Education and Sport Section - The Science and Art of Movement, 2022 The purpose of this study was to evaluate the agility and the running speed of male handball players in Category Junior Team of University Sports Club of Suceava and then make the comparasion between the results obtained by players from U16 and those ...
Andreea – Gabriela Boca +1 more
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Applied Sciences, 2023 Attacks on the Internet of Things (IoT) are not highly considered during the design and implementation. The prioritization is making profits and supplying services to clients. Most cryptographic algorithms that are commonly used on the IoT are vulnerable
Khumbelo Difference Muthavhine +1 more
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An Application of the Khumbelo Function on the Camellia Algorithm to Prevent Attacks in IoT Devices
IEEE Access, 2023 Camellia is an encryption algorithm implemented in many Internet of Things (IoT) devices. However, intruders attack the Camellia cipher using Substitution Box (S-Box) distinguishers.
Khumbelo Difference Muthavhine +1 more
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Mathematics, 2021 We consider a system of differential equations with two delays describing plankton–fish interaction. We analyze the case when the equilibrium point of this system corresponding to the presence of only phytoplankton and the absence of zooplankton and fish
Maria A. Skvortsova
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Fuzzy Differences-in-Differences [PDF]
The Review of Economic Studies, 2015 Difference-in-differences (DID) is a method to evaluate the effect of a treatment. In its basic version, a "control group" is untreated at two dates, whereas a "treatment group" becomes fully treated at the second date. However, in many applications of the DID method, the treatment rate only increases more in the treatment group. In such fuzzy designs,
de Chaisemartin, Clément +1 more
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Synthesized difference in differences [PDF]
Proceedings of the 12th ACM International Conference on Bioinformatics, Computational Biology, and Health Informatics, 2021 We consider estimating the conditional average treatment effect for everyone by eliminating confounding and selection bias. Unfortunately, randomized clinical trials (RCTs) eliminate confounding but impose strict exclusion criteria that prevent sampling of the entire clinical population.
Strobl, Eric V., Lasko, Thomas A.
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