Wyniki wyszukiwania dla: A. Kowalski

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Launching and Manipulation of Higher‐Order In‐Plane Hyperbolic Phonon Polaritons in Low‐Dimensional Heterostructures

Guanyu Lu, Zhiliang Pan, Christopher R. Gubbin, Ryan A. Kowalski, więcej

Advanced Materials > 35 > 22 > n/a - n/a

Hyperbolic phonon polaritons (HPhPs) are stimulated by coupling infrared (IR) photons with the polar lattice vibrations. Such HPhPs offer low‐loss, highly confined light propagation at subwavelength scales with out‐of‐plane or in‐plane hyperbolic wavefronts. For HPhPs, while a hyperbolic dispersion implies multiple propagating modes with a distribution of wavevectors at a given frequency, so far it...

artykuł

Choice of the p-norm for high level classification features pruning in modern convolutional neural networks with local sensitivity analysis

Ernest Jeczmionek, Piotr A. Kowalski

International Journal of Applied Mathematics and Computer Science > 2023 > Vol. 33, no. 4 > 663--672

Transfer learning has surfaced as a compelling technique in machine learning, enabling the transfer of knowledge across networks. This study evaluates the efficacy of ImageNet pretrained state-of-the-art networks, including DenseNet, ResNet, and VGG, in implementing transfer learning for prepruned models on compact datasets, such as FashionMNIST, CIFAR10, and CIFAR100. The primary objective is to...

artykuł

Cartilage‐penetrating hyaluronic acid hydrogel preserves tissue content and reduces chondrocyte catabolism

Michael A. Kowalski, Lorenzo M. Fernandes, Kyle E. Hammond, Sameh Labib, więcej

Journal of Tissue Engineering and Regenerative Medicine > 16 > 12 > 1138 - 1148

Articular cartilage injuries have a limited healing capacity and, due to inflammatory and catabolic activities, often experience progressive degeneration towards osteoarthritis. Current repair techniques generally provide short‐term symptomatic relief; however, the regeneration of hyaline cartilage remains elusive, leaving both the repair tissue and surrounding healthy tissue susceptible to long‐term...

artykuł

Evaluating the effects of an electric barrier on fish entrainment in an irrigation canal in Colorado

Dan A. Kowalski, Eric I. Gardunio, Chase A. Garvey

River Research and Applications > 38 > 3 > 539 - 547

Entrainment of fish in irrigation canals is a source of mortality for sport and native fishes and can affect populations and species diversity. To reduce entrainment of wild trout, an electric barrier was installed on the South Canal, an irrigation ditch on the Gunnison River in western Colorado, USA. The objective of this study was to evaluate the effectiveness of the barrier by marking fish upstream...

artykuł

The growth, photosynthetic parameters and nitrogen status of basil, coriander and oregano grown under different led light spectra

B. Matysiak, A. Kowalski

Acta Scientiarum Polonorum. Hortorum Cultus > 2021 > 20 > 2

artykuł

Fetal morphological features and abnormalities associated with equine early pregnancy loss

Anne Kahler, Imelda M. McGonnell, Harriette Smart, Alycia A. Kowalski, więcej

Equine Veterinary Journal > 53 > 3 > 530 - 541

Background Early pregnancy loss (EPL) occurs in approximately 8% of equine pregnancies, although the aetiology is mostly unknown and embryonic/fetal morphological abnormalities associated with EPL are not defined. Objectives To compare the morphology of EPL to clinically normal embryos/fetuses and previously described embryonic/fetal developmental milestones. To identify morphological abnormalities...

artykuł

Preface to special issue on recent advances in information technology III

Piotr A. Kowalski, Szymon Łukasik

Journal of Automation Mobile Robotics and Intelligent Systems > 2020 > Vol. 14, No. 3 > 18--19

artykuł

A modified particle swarm optimization procedure for triggering fuzzy flip-flop neural networks

Piotr A. Kowalski, Tomasz Słoczyński

International Journal of Applied Mathematics and Computer Science > 2021 > Vol. 31, no. 4 > 577--586

The aim of the presented study is to investigate the application of an optimization algorithm based on swarm intelligence to the configuration of a fuzzy flip-flop neural network. Research on solving this problem consists of the following stages. The first one is to analyze the impact of the basic internal parameters of the neural network and the particle swarm optimization (PSO) algorithm. Subsequently,...

artykuł

Quantifying the habitat preferences of the stonefly Pteronarcys californica in Colorado

Dan A. Kowalski, Eric E. Richer

River Research and Applications > 36 > 10 > 2043 - 2050

The salmonfly (Pteronarcys californica) is a large stonefly species that is ecologically important and recreationally significant to anglers in coldwater river systems throughout the western United States. Salmonflies are sensitive to disturbance and pollution and are considered an indicator of quality coldwater stream habitat. They are declining in range and abundance in some river systems and their...

artykuł

Preface to special issue on recent advances in machine learning and its applications

Piotr A. Kowalski, Szymon Łukasik, Piotr Kulczycki

Journal of Automation Mobile Robotics and Intelligent Systems > 2020 > Vol. 14, No. 2 > 30--31

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).

artykuł

ORGANIC GEOCHEMISTRY OF MIDDLE MIOCENE (BADENIAN – SARMATIAN) SOURCE ROCKS AND MATURATION MODELLING IN THE POLISH AND UKRAINIAN SECTORS OF THE EXTERNAL CARPATHIAN FOREDEEP

P. Kosakowski, G. Machowski, A. Kowalski, Y. V. Koltun, więcej

Journal of Petroleum Geology > 43 > 3 > 277 - 300

The Carpathian Foredeep to the north and NE of the Carpathian orogenic belt in SE Poland and NW Ukraine is divided into internal and external sectors. In the narrow internal foredeep, Lower and Middle Miocene shales, sandstones and interbedded evaporites are tightly folded. By contrast the external foredeep is characterized by the presence of a thick, unfolded Middle Miocene molasse succession. This...

artykuł

O ryzyku (nie)zawodowym

A. Kowalski

Atest > 2020 > 7-8

artykuł

Preface to special issue on contemporary problems of computer science, physics and applied mathematics

Piotr A. Kowalski, Szymon Łukasik, Piotr Kulczycki

Journal of Automation Mobile Robotics and Intelligent Systems > 2019 > Vol. 13, No. 3 > 39--40

artykuł

Thermochemistry of calcium rare‐earth silicate oxyapatites

Gustavo Costa, Bryan J. Harder, Narottam P. Bansal, Benjamin A. Kowalski, więcej

Journal of the American Ceramic Society > 103 > 2 > 1446 - 1453

The calcium rare‐earth (RE) silicate oxyapatite, Ca₂RE₈(SiO₄)₆O₂ (RE = Yb, Er, Y, Dy, Nd, Gd, and Sm), powders were synthesized by the solid‐state reaction method and characterized by X‐ray diffraction (XRD), Raman spectroscopy, and elemental composition analysis. The thermodynamic properties of the oxyapatites have been investigated using high‐temperature oxide melt calorimetry in molten 2PbO–B₂O...

artykuł

Peripheral loss of EphA4 ameliorates TBI-induced neuroinflammation and tissue damage

Elizabeth A. Kowalski, Jiang Chen, Amanda Hazy, Lauren E. Fritsch, więcej

Journal of Neuroinflammation > 2019 > 16 > 1 > 1-16

Background The continuum of pro- and anti-inflammatory response elicited by traumatic brain injury (TBI) is suggested to play a key role in the outcome of TBI; however, the underlying mechanisms remain ill -defined. Methods Here, we demonstrate that using bone marrow chimeric mice and systemic inhibition of EphA4 receptor shifts the pro-inflammatory milieu to pro-resolving following acute TBI. ...

artykuł

Efficient astronomical data condensation using approximate nearest neighbors

Szymon Łukasik, Konrad Lalik, Piotr Sarna, Piotr A. Kowalski, więcej

International Journal of Applied Mathematics and Computer Science > 2019 > Vol. 29, no. 3 > 467--476

Extracting useful information from astronomical observations represents one of the most challenging tasks of data exploration. This is largely due to the volume of the data acquired using advanced observational tools. While other challenges typical for the class of big data problems (like data variety) are also present, the size of datasets represents the most significant obstacle in visualization...

artykuł

Osuwiska jako przyczyna błędnych interpretacji budowy geologicznej – przykłady z Sudetów

A. Kowalski

Biuletyn Państwowego Instytutu Geologicznego > 2018 > nr 473 > 27--48

W ciągu ostatnich kilkunastu lat z obszaru Sudetów zinwentaryzowano i opisano dużą liczbę form osuwiskowych. W większości opracowań główny nacisk skierowano jednak na geomorfologiczną charakterystykę tych form. W artykule przedstawiono zależności rozwoju wybranych sudeckich osuwisk od budowy geologicznej, a także ocenę stopnia transformacji poszczególnych elementów struktury podłoża przez ruchy masowe...

artykuł

ICOS eddy covariance flux-station site setup: a review

C. Rebmann, M. Aubinet, H. Schmid, N. Arriga, więcej

International Agrophysics > 2018 > 32 > 4

artykuł

Towards long-term standardised carbon and greenhouse gas observations for monitoring Europe´s terrestrial ecosystems: a review

D. Franz, M. Acosta, N. Altimir, N. Arriga, więcej

International Agrophysics > 2018 > 32 > 4

artykuł

Estimating the storage term in eddy covariance measurements: the ICOS methodology

L. Montagnani, T. Grunwald, A. Kowalski, I. Mammarella, więcej

International Agrophysics > 2018 > 32 > 4

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Wyniki wyszukiwania dla: A. Kowalski

Launching and Manipulation of Higher‐Order In‐Plane Hyperbolic Phonon Polaritons in Low‐Dimensional Heterostructures

Choice of the p-norm for high level classification features pruning in modern convolutional neural networks with local sensitivity analysis

Cartilage‐penetrating hyaluronic acid hydrogel preserves tissue content and reduces chondrocyte catabolism

Evaluating the effects of an electric barrier on fish entrainment in an irrigation canal in Colorado

The growth, photosynthetic parameters and nitrogen status of basil, coriander and oregano grown under different led light spectra

Fetal morphological features and abnormalities associated with equine early pregnancy loss

Preface to special issue on recent advances in information technology III

A modified particle swarm optimization procedure for triggering fuzzy flip-flop neural networks

Quantifying the habitat preferences of the stonefly Pteronarcys californica in Colorado

Preface to special issue on recent advances in machine learning and its applications

ORGANIC GEOCHEMISTRY OF MIDDLE MIOCENE (BADENIAN – SARMATIAN) SOURCE ROCKS AND MATURATION MODELLING IN THE POLISH AND UKRAINIAN SECTORS OF THE EXTERNAL CARPATHIAN FOREDEEP

O ryzyku (nie)zawodowym

Preface to special issue on contemporary problems of computer science, physics and applied mathematics

Thermochemistry of calcium rare‐earth silicate oxyapatites

Peripheral loss of EphA4 ameliorates TBI-induced neuroinflammation and tissue damage

Efficient astronomical data condensation using approximate nearest neighbors

Osuwiska jako przyczyna błędnych interpretacji budowy geologicznej – przykłady z Sudetów

ICOS eddy covariance flux-station site setup: a review

Towards long-term standardised carbon and greenhouse gas observations for monitoring Europe´s terrestrial ecosystems: a review

Estimating the storage term in eddy covariance measurements: the ICOS methodology

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