Zobrazeno 1 - 10
of 7 465
pro vyhledávání: '"A, Karppinen"'
Autor:
De Marinis, Lorenzo, Kincaid, Peter Seigo, Lucas, Yann, Krafft, Lea, Michau, Vincent, Cherchi, Matteo, Karppinen, Mikko, Contestabile, Giampiero
A photonic integrated circuit (PIC) for the coherent combination of 32 input optical signals into a single output fiber is reported. The PIC was fabricated using a low-loss thick silicon-on-insulator (SOI) process and packaged with 32 input and 1 out
Externí odkaz:
http://arxiv.org/abs/2406.02076
Autor:
Mustonen, Otto H. J., Fogh, Ellen, Paddison, Joseph A. M., Mangin-Thro, Lucile, Hansen, Thomas, Playford, Helen, Diaz-Lopez, Maria, Babkevich, Peter, Vasala, Sami, Karppinen, Maarit, Cussen, Edmund J., Rønnow, Henrik M., Walker, Helen C.
Publikováno v:
Chem. Mater. 36, 501-513 (2024)
Quantum spin liquids are highly entangled magnetic states with exotic properties. The $S = 1/2$ square-lattice Heisenberg model is one of the foundational models in frustrated magnetism with a predicted, but never observed, quantum spin liquid state.
Externí odkaz:
http://arxiv.org/abs/2309.14422
Autor:
Karppinen, Arttu, Sarsa, Saara
We consider Orlicz--Laplace equation $-div(\frac{\varphi'(|\nabla u|)}{|\nabla u|}\nabla u)=f$ where $\varphi$ is an Orlicz function and either $f=0$ or $f\in L^\infty$. We prove local second order regularity results for the weak solutions $u$ of the
Externí odkaz:
http://arxiv.org/abs/2308.04038
Autor:
Mikhail Sofiev, Julia Palamarchuk, Rostislav Kouznetsov, Tamuna Abramidze, Beverley Adams-Groom, Célia M. Antunes, Arturo H. Ariño, Maximilian Bastl, Jordina Belmonte, Uwe E. Berger, Maira Bonini, Nicolas Bruffaerts, Jeroen Buters, Paloma Cariñanos, Sevcan Celenk, Valentina Ceriotti, Athanasios Charalampopoulos, Yolanda Clewlow, Bernard Clot, Aslog Dahl, Athanasios Damialis, Concepción De Linares, Letty A. De Weger, Lukas Dirr, Agneta Ekebom, Yalda Fatahi, María Fernández González, Delia Fernández González, Santiago Fernández-Rodríguez, Carmen Galán, Björn Gedda, Regula Gehrig, Carmi Geller Bernstein, Nestor Gonzalez Roldan, Lukasz Grewling, Lenka Hajkova, Risto Hänninen, François Hentges, Juha Jantunen, Evgeny Kadantsev, Idalia Kasprzyk, Mathilde Kloster, Katarzyna Kluska, Mieke Koenders, Janka Lafférsová, Poliana Mihaela Leru, Agnieszka Lipiec, Maria Louna-Korteniemi, Donát Magyar, Barbara Majkowska-Wojciechowska, Mika Mäkelä, Mirjana Mitrovic, Dorota Myszkowska, Gilles Oliver, Pia Östensson, Rosa Pérez-Badia, Krystyna Piotrowska-Weryszko, Marje Prank, Ewa Maria Przedpelska-Wasowicz, Sanna Pätsi, F. Javier Rodríguyez Rajo, Hallvard Ramfjord, Joanna Rapiejko, Victoria Rodinkova, Jesús Rojo, Luis Ruiz-Valenzuela, Ondrej Rybnicek, Annika Saarto, Ingrida Sauliene, Andreja Kofol Seliger, Elena Severova, Valentina Shalaboda, Branko Sikoparija, Pilvi Siljamo, Joana Soares, Olga Sozinova, Anders Stangel, Barbara Stjepanović, Erik Teinemaa, Svyatoslav Tyuryakov, M. Mar Trigo, Andreas Uppstu, Mart Vill, Julius Vira, Nicolas Visez, Tiina Vitikainen, Despoina Vokou, Elżbieta Weryszko-Chmielewska, Ari Karppinen
Publikováno v:
Scientific Data, Vol 11, Iss 1, Pp 1-19 (2024)
Abstract The dataset presents a 43 year-long reanalysis of pollen seasons for three major allergenic genera of trees in Europe: alder (Alnus), birch (Betula), and olive (Olea). Driven by the meteorological reanalysis ERA5, the atmospheric composition
Externí odkaz:
https://doaj.org/article/a2af37d3efa64adba2c4076fd1067b93
We provide a direct proof of existence and uniqueness of weak solutions to a broad family of strongly nonlinear elliptic equations with lower order terms. The leading part of the operator satisfies general growth conditions settling the problem in th
Externí odkaz:
http://arxiv.org/abs/2303.08570
Autor:
P. Simonen, M. Dal Maso, P. Prauda, A. Hoilijoki, A. Karppinen, P. Matilainen, P. Karjalainen, J. Keskinen
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 3219-3236 (2024)
Oxidation flow reactors used in secondary aerosol research do not immediately respond to changes in the inlet concentration of precursor gases because of their broad transfer functions. This is an issue when measuring the vehicular secondary aerosol
Externí odkaz:
https://doaj.org/article/54afd1ed68d441d085065f4d19281fbf
Autor:
Friederike Schulze, Juhani Määttä, Sybille Grad, Irina Heggli, Florian Brunner, Mazda Farshad, Oliver Distler, Jaro Karppinen, Jeffrey Lotz, Stefan Dudli
Publikováno v:
JOR Spine, Vol 7, Iss 3, Pp n/a-n/a (2024)
Abstract Introduction Modic changes (MC) are bone marrow lesions of vertebral bones, which can be detected with magnetic resonance imaging (MRI) adjacent to degenerated intervertebral discs. Defined by their appearance on T1 and T2 weighted images, t
Externí odkaz:
https://doaj.org/article/7c3ff202c6c6465bbc391ef0b30231c1
Autor:
Kowlagi, Narasimharao, Nguyen, Huy Hoang, McSweeney, Terence, Saarakkala, Simo, määttä, Juhani, Karppinen, Jaro, Tiulpin, Aleksei
This paper addresses the challenge of grading visual features in lumbar spine MRI using Deep Learning. Such a method is essential for the automatic quantification of structural changes in the spine, which is valuable for understanding low back pain.
Externí odkaz:
http://arxiv.org/abs/2210.14597
Autor:
Tiina A. Jokela, Jari E. Karppinen, Minta Kärkkäinen, Jukka-Pekka Mecklin, Simon Walker, Toni T. Seppälä, Eija K. Laakkonen
Publikováno v:
Cancer & Metabolism, Vol 12, Iss 1, Pp 1-11 (2024)
Abstract Circulating metabolites systemically reflect cellular processes and can modulate the tissue microenvironment in complex ways, potentially impacting cancer initiation processes. Genetic background increases cancer risk in individuals with Lyn
Externí odkaz:
https://doaj.org/article/3f400ed7cf2b456d9343fa786c1eee1c
Conditional particle filters (CPFs) with backward/ancestor sampling are powerful methods for sampling from the posterior distribution of the latent states of a dynamic model such as a hidden Markov model. However, the performance of these methods det
Externí odkaz:
http://arxiv.org/abs/2205.13898