28,447 results on '"Schirmer A"'
Search Results
252. Personalcontrolling Personalcontrolling
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Lindner-Lohmann, Doris, Lohmann, Florian, Schirmer, Uwe, Kornmeier, Martin, Series Editor, Lindner-Lohmann, Doris, Lohmann, Florian, and Schirmer, Uwe
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- 2023
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253. Personalbedarfsplanung
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Lindner-Lohmann, Doris, Lohmann, Florian, Schirmer, Uwe, Kornmeier, Martin, Series Editor, Lindner-Lohmann, Doris, Lohmann, Florian, and Schirmer, Uwe
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- 2023
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254. Entlohnung und betriebliche Sozialpolitik
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Lindner-Lohmann, Doris, Lohmann, Florian, Schirmer, Uwe, Kornmeier, Martin, Series Editor, Lindner-Lohmann, Doris, Lohmann, Florian, and Schirmer, Uwe
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- 2023
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255. Rahmenbedingungen der Personalpolitik
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Lindner-Lohmann, Doris, Lohmann, Florian, Schirmer, Uwe, Kornmeier, Martin, Series Editor, Lindner-Lohmann, Doris, Lohmann, Florian, and Schirmer, Uwe
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- 2023
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256. Personaleinsatz und -verwaltung
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Lindner-Lohmann, Doris, Lohmann, Florian, Schirmer, Uwe, Kornmeier, Martin, Series Editor, Lindner-Lohmann, Doris, Lohmann, Florian, and Schirmer, Uwe
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- 2023
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257. Ziele, Aufgaben und Funktionsbereiche des Personalmanagements
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Lindner-Lohmann, Doris, Lohmann, Florian, Schirmer, Uwe, Kornmeier, Martin, Series Editor, Lindner-Lohmann, Doris, Lohmann, Florian, and Schirmer, Uwe
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- 2023
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258. The association between preoperative epidural steroid injections and postoperative cervical and lumbar surgical site infections: A systematic review and meta-analysis
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Sherwood, David, Dovgan, Jakob, Schirmer, Derek, Haring, R. Sterling, and Schneider, Byron
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- 2024
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259. Comparative Analysis of Mechanical Thrombectomy Outcomes of Middle Cerebral Artery M1, M2 Superior, and M2 Inferior Occlusion Strokes
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Koul, Prateeka, Collins, Malie K., Bielinski, Tyler M., Goren, Oded, Weiner, Gregory M., Griessenauer, Christoph J., Noto, Anthony, Schirmer, Clemens, and Hendrix, Philipp
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- 2024
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260. Uptake of Sodium-Glucose Cotransporter-2 Inhibitors in Hospitalized Patients With Heart Failure: Insights From the Veterans Affairs Healthcare System
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VARSHNEY, ANUBODH S., CALMA, JAMIE, KALWANI, NEIL M., HSIAO, STEPHANIE, SALLAM, KARIM, CAO, FANG, DIN, NATASHA, SCHIRMER, JESSICA, BHATT, ANKEET S., AMBROSY, ANDREW P., HEIDENREICH, PAUL, and SANDHU, ALEXANDER T.
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- 2024
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261. Clinical and Analytical Performance of a Novel Point-of-Care High-Sensitivity Cardiac Troponin I Assay
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Wussler, Desiree, Puelacher, Christian, Huré, Gabrielle, Rentsch, Katharina, Gualandro, Danielle M., Reinhardt, Julia, Sanchez, Ana Yufera, Okamura, Bernhard, Shrestha, Samyut, Haaf, Philip, Badertscher, Patrick, Walter, Joan Elias, López, Beatriz, Martinez-Nadal, Gemma, Adrada, Esther Rodriguez, Parenica, Jiri, von Eckardstein, Arnold, Morawiec, Beata, Muzyk, Piotr, Schirmer, Henrik, Koechlin, Luca, Boeddinghaus, Jasper, Lopez-Ayala, Pedro, Reber, Cornelia, Nestelberger, Thomas, Wildi, Karin, Spagnuolo, Carlos C., Strebel, Ivo, Glaeser, Jonas, Bima, Paolo, Crisanti, Luca, Herraiz-Recuenco, Lourdes, Dubach, Elisa, Miró, Òscar, Martin-Sanchez, F. Javier, Kawecki, Damian, Keller, Dagmar I., Christ, Michael, Buser, Andreas, Giménez, Maria Rubini, Størvold, Gro Leite, Broughton, Marianne Nordlund, Omland, Torbjørn, Lyngbakken, Magnus N., Røsjø, Helge, and Mueller, Christian
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- 2024
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262. Iron scavenging and myeloid cell polarization
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Ludwig, Natalie, Cucinelli, Stefania, Hametner, Simon, Muckenthaler, Martina U., and Schirmer, Lucas
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- 2024
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263. Quality of life in patients with statin intolerance: a multicentre prospective registry study
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Baessler, A., Borucki, K., Heine, G., Hoh, G., Klingenberg, R., Koenig, W., Parhofer, K., Rettig-Ewen, V., Schettler, V., Schirmer, S., Seiler-Mußler, S., Stach-Jablonski, K., Taggeselle, J., Tamm, A., Vogt, A., Stürzebecher, Paulina E., Gouni-Berthold, Ioanna, Mateev, Christina, Frenzel, Ole, Erbe, Stephan, Boeckel, Jes-Niels, Scholz, Markus, Schatz, Ulrike, Weingärtner, Oliver, Kassner, Ursula, and Laufs, Ulrich
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- 2024
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264. Enhancers on the edge — how the nuclear envelope controls gene regulatory elements
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Czapiewski, Rafal and Schirmer, Eric C
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- 2024
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265. Alterations of Functional Connectivity Dynamics in Affective and Psychotic Disorders
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Betz, Linda, Erkens, Anne, Gussmann, Eva, Haas, Shalaila, Hasan, Alkomiet, Hoff, Claudius, Khanyaree, Ifrah, Melo, Aylin, Muckenhuber-Sternbauer, Susanna, Köhler, Janis, Öztürk, Ömer, Penzel, Nora, Popovic, David, Rangnick, Adrian, von Saldern, Sebastian, Sanfelici, Rachele, Spangemacher, Moritz, Tupac, Ana, Urquijo, Maria Fernanda, Weiske, Johanna, Wosgien, Antonia, Blume, Karsten, Gebhardt, Dominika, Kaiser, Nathalie, Milz, Ruth, Nikolaides, Alexandra, Seves, Mauro, Vent, Silke, Wassen, Martina, Andreou, Christina, Egloff, Laura, Harrisberger, Fabienne, Lenz, Claudia, Leanza, Letizia, Mackintosh, Amatya, Smieskova, Renata, Studerus, Erich, Walter, Anna, Widmayer, Sonja, Day, Chris, Iqbal, Mariam, Pelton, Mirabel, Mallikarjun, Pavan, Stainton, Alexandra, Lin, Ashleigh, Denissoff, Alexander, Ellilä, Anu, From, Tiina, Heinimaa, Markus, Ilonen, Tuula, Jalo, Päivi, Laurikainen, Heikki, Luutonen, Antti, Mäkela, Akseli, Paju, Janina, Pesonen, Henri, Säilä, Reetta-Liina, Toivonen, Anna, Turtonen, Otto, Solana, Ana Beatriz, Abraham, Manuela, Hehn, Nicolas, Schirmer, Timo, Altamura, Carlo, Belleri, Marika, Bottinelli, Francesca, Ferro, Adele, Re, Marta, Monzani, Emiliano, Sberna, Maurizio, D’Agostino, Armando, Del Fabro, Lorenzo, Perna, Giampaolo, Nobile, Maria, Alciati, Alessandra, Balestrieri, Matteo, Bonivento, Carolina, Cabras, Giuseppe, Fabbro, Franco, Garzitto, Marco, Piccin, Sara, Hoheisel, Linnea, Kambeitz-Ilankovic, Lana, Wenzel, Julian, Haas, Shalaila S., Antonucci, Linda A., Ruef, Anne, Schultze-Lutter, Frauke, Lichtenstein, Theresa, Rosen, Marlene, Dwyer, Dominic B., Salokangas, Raimo K.R., Lencer, Rebekka, Brambilla, Paolo, Borgwardt, Stephan, Wood, Stephen J., Upthegrove, Rachel, Bertolino, Alessandro, Ruhrmann, Stephan, Meisenzahl, Eva, Koutsouleris, Nikolaos, Fink, Gereon R., Daun, Silvia, and Kambeitz, Joseph
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- 2024
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266. Urbanization reduces diversity, simplifies community and filter bird species based on their functional traits in a tropical city
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Santos, Eduardo Guimarães, Wiederhecker, Helga Correa, Pompermaier, Vinicius Tirelli, Gainsbury, Alison M., Schirmer, Sofia Coradini, Morais, Cicera Vanessa Feitosa, Fontenele, Juliane Lima, de Morais Santana, Maysa Conceição, and Marini, Miguel Ângelo
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- 2024
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267. Formation of the methyl cation by photochemistry in a protoplanetary disk
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Berné, Olivier, Martin-Drumel, Marie-Aline, Schroetter, Ilane, Goicoechea, Javier R., Jacovella, Ugo, Gans, Bérenger, Dartois, Emmanuel, Coudert, Laurent H., Bergin, Edwin, Alarcon, Felipe, Cami, Jan, Roueff, Evelyne, Black, John H., Asvany, Oskar, Habart, Emilie, Peeters, Els, Canin, Amelie, Trahin, Boris, Joblin, Christine, Schlemmer, Stephan, Thorwirth, Sven, Cernicharo, Jose, Gerin, Maryvonne, Tielens, Alexander, Zannese, Marion, Abergel, Alain, Bernard-Salas, Jeronimo, Boersma, Christiaan, Bron, Emeric, Chown, Ryan, Cuadrado, Sara, Dicken, Daniel, Elyajouri, Meriem, Fuente, Asunción, Gordon, Karl D., Issa, Lina, Kannavou, Olga, Khan, Baria, Lacinbala, Ozan, Languignon, David, Le Gal, Romane, Maragkoudakis, Alexandros, Meshaka, Raphael, Okada, Yoko, Onaka, Takashi, Pasquini, Sofia, Pound, Marc W., Robberto, Massimo, Röllig, Markus, Schefter, Bethany, Schirmer, Thiébaut, Sidhu, Ameek, Tabone, Benoit, Van De Putte, Dries, Vicente, Sílvia, and Wolfire, Mark G.
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- 2023
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268. The effect of alkaline pretreatment on the anaerobic digestion of fruit and vegetable wastes from a central food distribution market
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Schirmer, Waldir Nagel, dos Santos, Liliana Andréa, Martins, Kelly Geronazzo, Gueri, Matheus Vitor Diniz, and Jucá, José Fernando Thomé
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- 2023
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269. Monitoring with verified guarantees
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Baumeister, Jan, Dauer, Johann C., Finkbeiner, Bernd, and Schirmer, Sebastian
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- 2023
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270. The Woven EndoBridge (WEB) Device for the Treatment of Intracranial Aneurysms: Ten Years of Lessons Learned and Adjustments in Practice from the WorldWideWEB Consortium
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Dmytriw, Adam A., Dibas, Mahmoud, Ghozy, Sherief, Adeeb, Nimer, Diestro, Jose Danilo Bengzon, Phan, Kevin, Cuellar-Saenz, Hugo H., Sweid, Ahmad, Lay, Sovann V., Guenego, Adrien, Renieri, Leonardo, Al Balushi, Ali, Saliou, Guillaume, Möhlenbruch, Markus, Regenhardt, Robert W., Vranic, Justin E., Lylyk, Ivan, Foreman, Paul M., Vachhani, Jay A., Župančić, Vedran, Hafeez, Muhammad U., Rutledge, Caleb, Waqas, Muhammad, Tutino, Vincent M., Rabinov, James D., Ren, Yifan, Schirmer, Clemens M., Piano, Mariangela, Kühn, Anna L., Michelozzi, Caterina, Elens, Stéphanie, Starke, Robert M., Hassan, Ameer, Salehani, Arsalaan, Sporns, Peter, Jones, Jesse, Psychogios, Marios, Spears, Julian, Lubicz, Boris, Panni, Pietro, Puri, Ajit S., Pero, Guglielmo, Griessenauer, Christoph J., Asadi, Hamed, Stapleton, Christopher J., Siddiqui, Adnan, Ducruet, Andrew F., Albuquerque, Felipe C., Du, Rose, Kan, Peter, Kalousek, Vladimir, Lylyk, Pedro, Boddu, Srikanth, Tjoumakaris, Stavropoula, Knopman, Jared, Aziz-Sultan, Mohammad A., Limbucci, Nicola, Jabbour, Pascal, Cognard, Christophe, and Patel, Aman B.
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- 2023
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271. Hemostatic radiotherapy in clinically significant tumor-related bleeding: excellent palliative results in a retrospective analysis of 77 patients
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Manuel Guhlich, Teresa Esther Maag, Leif Hendrik Dröge, Andrea Hille, Sandra Donath, Stephanie Bendrich, Markus Anton Schirmer, Friedemann Nauck, Martin Leu, Joachim Riggert, Julia Gallwas, and Stefan Rieken
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Cancer bleeding ,Radiotherapy ,Palliative therapy ,Transfusion ,Retrospective study ,Emergency radiation ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Significant bleeding of tumor sites is a dreaded complication in oncological diseases and often results in clinical emergencies. Besides basic local and interventional procedures, an urgent radiotherapeutic approach can either achieve a bleeding reduction or a bleeding stop in a vast majority of patients. In spite of being used regularly in clinical practice, data reporting results to this therapy approach is still scarce. Methods We retrospectively analyzed 77 patients treated for significant tumor-related bleeding at our clinic between 2000 and 2021, evaluating treatment response rate, hemoglobin levels, hemoglobin transfusion necessity, administered radiotherapy dose and overall survival. Results Response rate in terms of bleeding stop was 88.3% (68/77) in all patients and 95.2% (60/63) in the subgroup, wherein radiotherapy (RT) was completed as intended. Hemoglobin transfusions decreased during treatment in a further subgroup analysis. Median overall survival (OS) was 3.3 months. Patients with primary tumors (PT) of the cervix (carcinoma of the cervix, CC) or endometrium (endometrioid carcinoma, EDC) and patients receiving the full intended RT dose showed statistically significant better OS in a multivariable cox regression model. Median administered dose was 39 Gy, treatment related acute toxicity was considerably low. Conclusions Our data show an excellent response rate with a low toxicity profile when administering urgent radiotherapy for tumor related clinically significant bleeding complications. Nonetheless, treatment decisions should be highly individual due to the low median overall survival of this patient group.
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- 2023
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272. Post-traumatic stress disorder among heart disease patients: a clinical follow-up of individuals with myocardial infarction in the Tromsø Study
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Geir Fagerjord Lorem, Eva T. Næss, Maja-Lisa Løchen, Kjersti Lillevoll, Else-Marie Molund, Assami Rösner, Sigmund Lindkvist, and Henrik Schirmer
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Post-traumatic stress disorder (PTSD) ,Myocardial infarction ,Mental health ,Mental trauma ,Stressful life events ,The Tromsø Study ,Psychiatry ,RC435-571 - Abstract
Abstract Background Myocardial infarction is likely to be experienced as a life-threatening and potentially traumatic event. Approximately one-third of patients with myocardial infarction experience clinically significant symptoms of anxiety/depression. However, it is unclear how many of these patients experience these symptoms because of post-traumatic stress disorder (PTSD). We conducted a clinical screening of individuals with a confirmed myocardial infarction diagnosis. Our goal was to examine the prevalence of PTSD in myocardial infarction patients and study how PTSD symptoms were associated with exposure to potentially traumatic events. Method This is epidemiological research with a cross-sectional design following up participants from the Tromsø Study with a confirmed diagnosis of myocardial infarction. We sent invitations to participants in the Tromsø Study with clinically significant self-reported anxiety or depression symptoms following myocardial infarction. A cross-sectional sample of N = 79 participants (61 men and 18 women) was collected. During an interview, participants completed the Stressful Life Events Screening Questionnaire and the PTSD checklist PCL-5. Results We found nine participants (11.6%) with probable PTSD. This was significantly higher than the postulated population prevalence in Norway (p
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- 2023
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273. Personalized therapy in rheumatoid arthritis (PETRA): a protocol for a randomized controlled trial to test the effect of a psychological intervention in rheumatoid arthritis
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Lennart Seizer, Ellis Huber, Miriam Schirmer, Sven Hilbert, Eva-Maria Wiest, and Christian Schubert
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Psychoneuroimmunology ,Randomized controlled trial ,Integrative single-case study ,Rheumatoid arthritis ,Group-based intervention ,Medicine (General) ,R5-920 - Abstract
Abstract Rheumatoid arthritis (RA) is a chronic autoimmune disease that primarily affects cartilage and bone. Psychological stress can both trigger disease exacerbation and result from disease activity. As standard pharmacological interventions alone have limited success in treating RA, a more comprehensive biopsychosocial approach to treatment has been recommended. In this prospective randomized controlled trial (RCT), a psychotherapeutically guided, group-based intervention program will be conducted with RA patients over a period of 9 months. This program combines a dynamic-interactional model with disorder-specific coping-oriented perspectives to improve patients’ social, emotional, and problem-solving competencies as well as stress system functional status. The enrolment of 440 patients, randomly allocated to either an intervention (n = 220) or control group (n = 220), is planned. To evaluate the intervention effect, various indicators of RA disease activity, stress system activity, and psychological condition will be assessed through sets of standardized questionnaires and biochemical analyses of blood and saliva samples. Moreover, healthcare-related costs for each patient will be obtained using routine health insurance data. Outcome variables will be measured in all patients at regular intervals prior to intervention (baseline), during the 9-month intervention (five time points), and during a 9-month follow-up phase (three time points), allowing the comprehensive analysis of within- and between-subject effects, i.e. trajectories of the target variables in the intervention and control groups. In addition, to investigate the intervention effects on real-life stress system functioning in RA, 10 integrative single-case studies (n = 5 from the intervention group, n = 5 from the control group) will be conducted. In each study, once before and after the 9-month intervention, urine samples will be collected, and patients will fill out questionnaires for approximately 1 month at 12-h intervals. Moreover, weekly in-depth interviews will be conducted with patients to determine their previous week’s emotionally positive and negative incidents. Using time series analysis, it is then possible to investigate whether and how stress system function in these RA patients has improved from the applied intervention. By using both an investigational macro- and microperspective, this project aims to evaluate a psychological intervention in the routine care of individuals with RA. Trial registration German Clinical Trials Register DRKS00028144. Registered on 1 March 2022.
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- 2023
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274. SARS-CoV-2 infects epithelial cells of the blood-cerebrospinal fluid barrier rather than endothelial cells or pericytes of the blood-brain barrier
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Chiara Stüdle, Hideaki Nishihara, Sven Wischnewski, Laila Kulsvehagen, Sylvain Perriot, Hiroshi Ishikawa, Horst Schroten, Stephan Frank, Nikolaus Deigendesch, Renaud Du Pasquier, Lucas Schirmer, Anne-Katrin Pröbstel, and Britta Engelhardt
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SARS-CoV-2 ,Blood-brain barrier ,Blood-cerebrospinal fluid barrier ,hiPSC-derived brain microvascular endothelial cells ,Choroid plexus epithelial cells ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background As a consequence of SARS-CoV-2 infection various neurocognitive and neuropsychiatric symptoms can appear, which may persist for several months post infection. However, cell type-specific routes of brain infection and underlying mechanisms resulting in neuroglial dysfunction are not well understood. Methods Here, we investigated the susceptibility of cells constituting the blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB) of the choroid plexus (ChP) to SARS-CoV-2 infection using human induced pluripotent stem cell (hiPSC)-derived cellular models and a ChP papilloma-derived epithelial cell line as well as ChP tissue from COVID-19 patients, respectively. Results We noted a differential infectibility of hiPSC-derived brain microvascular endothelial cells (BMECs) depending on the differentiation method. Extended endothelial culture method (EECM)-BMECs characterized by a complete set of endothelial markers, good barrier properties and a mature immune phenotype were refractory to SARS-CoV-2 infection and did not exhibit an activated phenotype after prolonged SARS-CoV-2 inoculation. In contrast, defined medium method (DMM)-BMECs, characterized by a mixed endothelial and epithelial phenotype and excellent barrier properties were productively infected by SARS-CoV-2 in an ACE2-dependent manner. hiPSC-derived brain pericyte-like cells (BPLCs) lacking ACE2 expression were not susceptible to SARS-CoV-2 infection. Furthermore, the human choroid plexus papilloma-derived epithelial cell line HIBCPP, modeling the BCSFB was productively infected by SARS-CoV-2 preferentially from the basolateral side, facing the blood compartment. Assessment of ChP tissue from COVID-19 patients by RNA in situ hybridization revealed SARS-CoV-2 transcripts in ChP epithelial and ChP stromal cells. Conclusions Our study shows that the BCSFB of the ChP rather than the BBB is susceptible to direct SARS-CoV-2 infection. Thus, neuropsychiatric symptoms because of COVID-19 may rather be associated with dysfunction of the BCSFB than the BBB. Future studies should consider a role of the ChP in underlying neuropsychiatric symptoms following SARS-CoV-2 infection.
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- 2023
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275. A benchmark dataset for machine learning in ecotoxicology
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Christoph Schür, Lilian Gasser, Fernando Perez-Cruz, Kristin Schirmer, and Marco Baity-Jesi
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Science - Abstract
Abstract The use of machine learning for predicting ecotoxicological outcomes is promising, but underutilized. The curation of data with informative features requires both expertise in machine learning as well as a strong biological and ecotoxicological background, which we consider a barrier of entry for this kind of research. Additionally, model performances can only be compared across studies when the same dataset, cleaning, and splittings were used. Therefore, we provide ADORE, an extensive and well-described dataset on acute aquatic toxicity in three relevant taxonomic groups (fish, crustaceans, and algae). The core dataset describes ecotoxicological experiments and is expanded with phylogenetic and species-specific data on the species as well as chemical properties and molecular representations. Apart from challenging other researchers to try and achieve the best model performances across the whole dataset, we propose specific relevant challenges on subsets of the data and include datasets and splittings corresponding to each of these challenge as well as in-depth characterization and discussion of train-test splitting approaches.
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- 2023
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276. Hypernet-Ensemble Learning of Segmentation Probability for Medical Image Segmentation with Ambiguous Labels
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Hong, Sungmin, Bonkhoff, Anna K., Hoopes, Andrew, Bretzner, Martin, Schirmer, Markus D., Giese, Anne-Katrin, Dalca, Adrian V., Golland, Polina, and Rost, Natalia S.
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Electrical Engineering and Systems Science - Image and Video Processing ,Computer Science - Computer Vision and Pattern Recognition ,Computer Science - Machine Learning ,68T07 (Primary) 92C55, 94A08 (Secondary) ,I.4 ,I.4.6 ,I.2 ,I.2.1 ,I.5.1 ,I.5.4 ,J.3 - Abstract
Despite the superior performance of Deep Learning (DL) on numerous segmentation tasks, the DL-based approaches are notoriously overconfident about their prediction with highly polarized label probability. This is often not desirable for many applications with the inherent label ambiguity even in human annotations. This challenge has been addressed by leveraging multiple annotations per image and the segmentation uncertainty. However, multiple per-image annotations are often not available in a real-world application and the uncertainty does not provide full control on segmentation results to users. In this paper, we propose novel methods to improve the segmentation probability estimation without sacrificing performance in a real-world scenario that we have only one ambiguous annotation per image. We marginalize the estimated segmentation probability maps of networks that are encouraged to under-/over-segment with the varying Tversky loss without penalizing balanced segmentation. Moreover, we propose a unified hypernetwork ensemble method to alleviate the computational burden of training multiple networks. Our approaches successfully estimated the segmentation probability maps that reflected the underlying structures and provided the intuitive control on segmentation for the challenging 3D medical image segmentation. Although the main focus of our proposed methods is not to improve the binary segmentation performance, our approaches marginally outperformed the state-of-the-arts. The codes are available at \url{https://github.com/sh4174/HypernetEnsemble}.
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- 2021
277. Modeling Irregular Time Series with Continuous Recurrent Units
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Schirmer, Mona, Eltayeb, Mazin, Lessmann, Stefan, and Rudolph, Maja
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Computer Science - Machine Learning ,Statistics - Machine Learning - Abstract
Recurrent neural networks (RNNs) are a popular choice for modeling sequential data. Modern RNN architectures assume constant time-intervals between observations. However, in many datasets (e.g. medical records) observation times are irregular and can carry important information. To address this challenge, we propose continuous recurrent units (CRUs) -- a neural architecture that can naturally handle irregular intervals between observations. The CRU assumes a hidden state, which evolves according to a linear stochastic differential equation and is integrated into an encoder-decoder framework. The recursive computations of the CRU can be derived using the continuous-discrete Kalman filter and are in closed form. The resulting recurrent architecture has temporal continuity between hidden states and a gating mechanism that can optimally integrate noisy observations. We derive an efficient parameterization scheme for the CRU that leads to a fast implementation f-CRU. We empirically study the CRU on a number of challenging datasets and find that it can interpolate irregular time series better than methods based on neural ordinary differential equations., Comment: Accepted at ICML 2022, Baltimore, Maryland
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- 2021
278. The algebraic topology of 4-manifolds multisections
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Moussard, Delphine and Schirmer, Trenton
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Mathematics - Geometric Topology ,57K40 57K41 - Abstract
A multisection of a 4-manifold is a decomposition into 1-handlebodies intersecting pairwise along 3-dimensional handlebodies or along a central closed surface; this generalizes the Gay-Kirby trisections. We show how to compute the twisted absolute and relative homology, the torsion and the twisted intersection form of a 4-manifold from a multisection diagram. The homology and torsion are given by a complex of free modules defined by the diagram and the intersection form is expressed in terms of the intersection form on the central surface. We give efficient proofs, with very few computations, thanks to a retraction of the (possibly punctured) 4-manifold onto a CW-complex determined by the multisection diagram. Further, a multisection induces an open book decomposition on the boundary of the 4-manifold; we describe the action of the monodromy on the homology of the page from the multisection diagram., Comment: 17 pages, 6 figures, comments welcome
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- 2021
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279. Euclid preparation: XVIII. Cosmic Dawn Survey. Spitzer observations of the Euclid deep fields and calibration fields
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Moneti, Andrea, McCracken, H. J., Shuntov, M., Kauffmann, O. B., Capak, P., Davidzon, I., Ilbert, O., Scarlata, C., Toft, S., Weaver, J., Chary, R., Cuby, J., Faisst, A. L., Masters, D. C., McPartland, C., Mobasher, B., Sanders, D. B., Scaramella, R., Stern, D., Szapudi, I., Teplitz, H., Zalesky, L., Amara, A., Auricchio, N., Bodendorf, C., Bonino, D., Branchini, E., Brau-Nogue, S., Brescia, M., Brinchmann, J., Capobianco, V., Carbone, C., Carretero, J., Castander, F. J., Castellano, M., Cavuoti, S., Cimatti, A., Cledassou, R., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Corcione, L., Costille, A., Cropper, M., Da Silva, A., Degaudenzi, H., Douspis, M., Dubath, F., Duncan, C. A. J., Dupac, X., Dusini, S., Farrens, S., Ferriol, S., Fosalba, P., Frailis, M., Franceschi, E., Fumana, M., Garilli, B., Gillis, B., Giocoli, C., Granett, B. R., Grazian, A., Grupp, F., Haugan, S. V. H., Hoekstra, H., Holmes, W., Hormuth, F., Hudelot, P., Jahnke, K., Kermiche, S., Kiessling, A., Kilbinger, M., Kitching, T., Kohley, R., Kuemmel, M., Kunz, M., Kurki-Suonio, H., Ligori, S., Lilje, P. B., Lloro, I., Maiorano, E., Mansutti, O., Marggraf, O., Markovic, K., Marulli, F., Massey, R., Maurogordato, S., Meneghetti, M., Merlin, E., Meylan, G., Moresco, M., Moscardini, L., Munari, E., Niemi, S. M., Padilla, C., Paltani, S., Pasian, F., Pedersen, K., Pires, S., Poncet, M., Popa, L., Pozzetti, L., Raison, F., Rebolo, R., Rhodes, J., Rix, H., Roncarelli, M., Rossetti, E., Saglia, R., Schneider, P., Secroun, A., Seidel, G., Serrano, S., Sirignano, C., Sirri, G., Stanco, L., Tallada-Crespi, P., Taylor, A. N., Tereno, I., Toledo-Moreo, R., Torradeflot, F., Wang, Y., Welikala, N., Weller, J., Zamorani, G., Zoubian, J., Andreon, S., Bardelli, S., Camera, S., Gracia-Carpio, J., Medinaceli, E., Mei, S., Polenta, G., Romelli, E., Sureau, F., Tenti, M., Vassallo, T., Zacchei, A., Zucca, E., Baccigalupi, C., Balaguera-Antolinez, A., Bernardeau, F., Biviano, A., Bolzonella, M., Bozzo, E., Burigana, C., Cabanac, R., Cappi, A., Carvalho, C. S., Casas, S., Castignani, G., Colodro-Conde, C., Coupon, J., Courtois, H. M., Di Ferdinando, D., Farina, M., Finelli, F., Flose-Reimberg, P., Fotopoulou, S., Galeotta, S., Ganga, K., Garcia-Bellido, J., Gaztanaga, E., Gozaliasl, G., Hook, I., Joachimi, B., Kansal, V., Keihanen, E., Kirkpatrick, C. C., Lindholm, V., Mainetti, G., Maino, D., Maoli, R., Martinelli, M., Martinet, N., Maturi, M., Metcalf, R. B., Morgante, G., Morisset, N., Nucita, A., Patrizii, L., Potter, D., Renzi, A., Riccio, G., Sanchez, A. G., Sapone, D., Schirmer, M., Schultheis, M., Scottez, V., Sefusatti, E., Teyssier, R., Tubio, O., Tutusaus, I., Valiviita, J., Viel, M., and Hildebrandt, H.
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Astrophysics - Astrophysics of Galaxies ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
We present a new infrared survey covering the three Euclid deep fields and four other Euclid calibration fields using Spitzer's Infrared Array Camera (IRAC). We have combined these new observations with all relevant IRAC archival data of these fields in order to produce the deepest possible mosaics of these regions. In total, these observations represent nearly 11% of the total Spitzer mission time. The resulting mosaics cover a total of approximately 71.5deg$^2$ in the 3.6 and 4.5um bands, and approximately 21.8deg$^2$ in the 5.8 and 8um bands. They reach at least 24 AB magnitude (measured to sigma, in a 2.5 arcsec aperture) in the 3.6um band and up to ~ 5 mag deeper in the deepest regions. The astrometry is tied to the Gaia astrometric reference system, and the typical astrometric uncertainty for sources with 16<[3.6]<19 is <0.15 arcsec. The photometric calibration is in excellent agreement with previous WISE measurements. We have extracted source number counts from the 3.6um band mosaics and they are in excellent agreement with previous measurements. Given that the Spitzer Space Telescope has now been decommissioned these mosaics are likely to be the definitive reduction of these IRAC data. This survey therefore represents an essential first step in assembling multi-wavelength data on the Euclid deep fields which are set to become some of the premier fields for extragalactic astronomy in the 2020s., Comment: 15 pages with 11 figures, approved by Euclid Consortium Publication Board and submitted to Astronomy and Astrophysics. Data products will become available via the IRSA website once the paper is accepted. This paper is a companion to "COSMOS2020: A panchromatic view of the Universe to z~10 from two complementary catalogs" by John Weaver et al., which is being posted in parallel
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- 2021
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280. Monitoring with Verified Guarantees
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C., Dauer J., B., Finkbeiner, and S, Schirmer
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Computer Science - Logic in Computer Science - Abstract
Runtime monitoring is generally considered a light-weight alternative to formal verification. In safety-critical systems, however, the monitor itself is a critical component. For example, if the monitor is responsible for initiating emergency protocols, as proposed in a recent aviation standard, then the safety of the entire system critically depends on guarantees of the correctness of the monitor. In this paper, we present a verification extension to the Lola monitoring language that integrates the efficient specification of the monitor with Hoare-style annotations that guarantee the correctness of the monitor specification. We add two new operators, assume and assert, which specify assumptions of the monitor and expectations on its output, respectively. The validity of the annotations is established by an integrated SMT solver. We report on experience in applying the approach to specifications from the avionics domain, where the annotation with assumptions and assertions has lead to the discovery of safety-critical errors in the specifications. The errors range from incorrect default values in offset computations to complex algorithmic errors that result in unexpected temporal patterns.
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- 2021
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281. Euclid preparation: XIX. Impact of magnification on photometric galaxy clustering
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Lepori, F., Tutusaus, I., Viglione, C., Bonvin, C., Camera, S., Castander, F. J., Durrer, R., Fosalba, P., Jelic-Cizmek, G., Kunz, M., Adamek, J., Casas, S., Martinelli, M., Sakr, Z., Sapone, D., Amara, A., Auricchio, N., Bodendorf, C., Bonino, D., Branchini, E., Brescia, M., Brinchmann, J., Capobianco, V., Carbone, C., Carretero, J., Castellano, M., Cavuoti, S., Cimatti, A., Cledassou, R., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Corcione, L., Courbin, F., Da Silva, A., Degaudenzi, H., Douspis, M., Dubath, F., Dupac, X., Dusini, S., Ealet, A., Farrens, S., Ferriol, S., Franceschi, E., Fumana, M., Garilli, B., Gillard, W., Gillis, B., Giocoli, C., Grazian, A., Grupp, F., Guzzo, L., Haugan, S. V. H., Holmes, W., Hormuth, F., Hudelot, P., Jahnke, K., Kermiche, S., Kiessling, A., Kilbinger, M., Kitching, T., Kümmel, M., Kurki-Suonio, H., Ligori, S., Lilje, P. B., Lloro, I., Mansutti, O., Marggraf, O., Markovic, K., Marulli, F., Massey, R., Maurogordato, S., Melchior, M., Meneghetti, M., Merlin, E., Meylan, G., Moresco, M., Moscardini, L., Munari, E., Nakajima, R., Niemi, S. M., Padilla, C., Paltani, S., Pasian, F., Pedersen, K., Percival, W. J., Pettorino, V., Pires, S., Poncet, M., Popa, L., Pozzetti, L., Raison, F., Rhodes, J., Roncarelli, M., Rossetti, E., Saglia, R., Schneider, P., Secroun, A., Seidel, G., Serrano, S., Sirignano, C., Sirri, G., Stanco, L., Starck, J. -L., Tallada-Crespí, P., Taylor, A. N., Tereno, I., Toledo-Moreo, R., Torradeflot, F., Valentijn, E. A., Valenziano, L., Wang, Y., Weller, J., Zamorani, G., Zoubian, J., Andreon, S., Bardelli, S., Fabbian, G., Graciá-Carpio, J., Maino, D., Medinaceli, E., Mei, S., Renzi, A., Romelli, E., Sureau, F., Vassallo, T., Zacchei, A., Zucca, E., Baccigalupi, C., Balaguera-Antolínez, A., Bernardeau, F., Biviano, A., Blanchard, A., Bolzonella, M., Borgani, S., Bozzo, E., Burigana, C., Cabanac, R., Cappi, A., Carvalho, C. S., Castignani, G., Colodro-Conde, C., Coupon, J., Courtois, H. M., Cuby, J. -G., Davini, S., de la Torre, S., Di Ferdinando, D., Farina, M., Ferreira, P. G., Finelli, F., Galeotta, S., Ganga, K., Garcia-Bellido, J., Gaztanaga, E., Gozaliasl, G., Hook, I. M., Ilić, S., Joachimi, B., Kansal, V., Keihanen, E., Kirkpatrick, C. C., Lindholm, V., Mainetti, G., Maoli, R., Martinet, N., Maturi, M., Metcalf, R. B., Monaco, P., Morgante, G., Nightingale, J., Nucita, A., Patrizii, L., Popa, V., Potter, D., Riccio, G., Sánchez, A. G, Schirmer, M., Schultheis, M., Scottez, V., Sefusatti, E., Tramacere, A., Valiviita, J., Viel, M., and Hildebrandt, H.
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Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
We investigate the importance of lensing magnification for estimates of galaxy clustering and its cross-correlation with shear for the photometric sample of Euclid. Using updated specifications, we study the impact of lensing magnification on the constraints and the shift in the estimation of the best fitting cosmological parameters that we expect if this effect is neglected. We follow the prescriptions of the official Euclid Fisher matrix forecast for the photometric galaxy clustering analysis and the combination of photometric clustering and cosmic shear. The slope of the luminosity function (local count slope), which regulates the amplitude of the lensing magnification, and the galaxy bias have been estimated from the Euclid Flagship simulation.We find that magnification significantly affects both the best-fit estimation of cosmological parameters and the constraints in the galaxy clustering analysis of the photometric sample. In particular, including magnification in the analysis reduces the 1$\sigma$ errors on $\Omega_{\text{m},0}, w_{0}, w_a$ at the level of 20-35%, depending on how well we will be able to independently measure the local count slope. In addition, we find that neglecting magnification in the clustering analysis leads to shifts of up to 1.6$\sigma$ in the best-fit parameters. In the joint analysis of galaxy clustering, cosmic shear, and galaxy-galaxy lensing, magnification does not improve precision, but it leads to an up to 6$\sigma$ bias if neglected. Therefore, for all models considered in this work, magnification has to be included in the analysis of galaxy clustering and its cross-correlation with the shear signal ($3\times2$pt analysis) for an accurate parameter estimation., Comment: 26 pages, 11 figures. Version accepted for publication in A&A
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- 2021
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282. Robustness of Quantum Systems Subject to Decoherence: Structured Singular Value Analysis?
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Schirmer, S G, Langbein, F C, Weidner, C A, and Jonckheere, E A
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Quantum Physics - Abstract
We study the problem of robust performance of quantum systems under structured uncertainties. A specific feature of closed (Hamiltonian) quantum systems is that their poles lie on the imaginary axis and that neither a coherent controller nor physically relevant structured uncertainties can alter this situation. This changes for open systems where decoherence ensures asymptotic stability and creates a unique landscape of pure performance robustness, with the distinctive feature that closed-loop stability is secured by the underlying physics and needs not be enforced. This stability, however, is often detrimental to quantum-enhanced performance, and additive perturbations of the Hamiltonian give rise to dynamic generators that are nonlinear in the perturbed parameters, invalidating classical paradigms to assess robustness to structured perturbations such as singular value analysis. This problem is addressed using a fixed-point iteration approach to determine a maximum perturbation strength $\delta_{\max}$ that ensures that the transfer function remains bounded, $||T_\delta||<\delta^{-1}$ for $\delta<\delta_{\max}$., Comment: Accepted for IEEE CDC 2021
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- 2021
283. Monte Carlo simulations of spin transport in nanoscale In$_{0.7}$Ga$_{0.3}$As transistors: Temperature and size effects
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Thorpe, B, Kalna, K, and Schirmer, S
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Condensed Matter - Mesoscale and Nanoscale Physics ,Quantum Physics - Abstract
Spin-based metal-oxide-semiconductor field-effect transistors (MOSFET) with a high-mobility III-V channel are studied using self-consistent quantum corrected ensemble Monte Carlo device simulations of charge and spin transport. The simulations including spin-orbit coupling mechanisms (Dresselhaus and Rashba coupling) examine the electron spin transport in the 25 nm gate length In$_{0.7}$Ga$_{0.3}$As MOSFET. The transistor lateral dimensions (the gate length, the source-to-gate, and the gate-to-drain spacers) are increased to investigate the spin-dependent drain current modulation induced by the gate from room temperature of 300 K down to 77 K. This modulation increases with increasing temperature due to increased Rashba coupling. Finally, an increase of up to 20 nm in the gate length, source-to-gate, or the gate-to-drain spacers increases the spin polarization and enhances the spin-dependent drain current modulation at the drain due to polarization-refocusing effects.
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- 2021
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284. Predicting Chemical Hazard across Taxa through Machine Learning
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Wu, Jimeng, D'Ambrosi, Simone, Ammann, Lorenz, Stadnicka-Michalak, Julita, Schirmer, Kristin, and Baity-Jesi, Marco
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Quantitative Biology - Quantitative Methods ,Computer Science - Machine Learning - Abstract
We applied machine learning methods to predict chemical hazards focusing on fish acute toxicity across taxa. We analyzed the relevance of taxonomy and experimental setup, showing that taking them into account can lead to considerable improvements in the classification performance. We quantified the gain obtained throught the introduction of taxonomic and experimental information, compared to classification based on chemical information alone. We used our approach with standard machine learning models (K-nearest neighbors, random forests and deep neural networks), as well as the recently proposed Read-Across Structure Activity Relationship (RASAR) models, which were very successful in predicting chemical hazards to mammals based on chemical similarity. We were able to obtain accuracies of over 93% on datasets where, due to noise in the data, the maximum achievable accuracy was expected to be below 96%. The best performances were obtained by random forests and RASAR models. We analyzed metrics to compare our results with animal test reproducibility, and despite most of our models "outperform animal test reproducibility" as measured through recently proposed metrics, we showed that the comparison between machine learning performance and animal test reproducibility should be addressed with particular care. While we focused on fish mortality, our approach, provided that the right data is available, is valid for any combination of chemicals, effects and taxa.
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- 2021
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285. Cone-beam CT-based Navigation With Augmented Fluoroscopy of the Airways for Image-guided Bronchoscopic Biopsy of Peripheral Pulmonary Nodules: A Prospective Clinical Study
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Pritchett, Michael A., Williams, Julie C., Schirmer, Charles C., and Langereis, Sander
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- 2024
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286. ZnO–Graphene Oxide Nanocomposite for Paclitaxel Delivery and Enhanced Toxicity in Breast Cancer Cells
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Lorenzo Francesco Madeo, Christine Schirmer, Giuseppe Cirillo, Ayah Nader Asha, Rasha Ghunaim, Samuel Froeschke, Daniel Wolf, Manuela Curcio, Paola Tucci, Francesca Iemma, Bernd Büchner, Silke Hampel, and Michael Mertig
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zinc oxide nanoparticles ,graphene oxide ,nanocomposite ,cancer therapy ,Paclitaxel delivery ,Organic chemistry ,QD241-441 - Abstract
A ZnO-Graphene oxide nanocomposite (Z-G) was prepared in order to exploit the biomedical features of each component in a single anticancer material. This was achieved by means of an environmentally friendly synthesis, taking place at a low temperature and without the involvement of toxic reagents. The product was physicochemically characterized. The ZnO-to-GO ratio was determined through thermogravimetric analysis, while scanning electron microscopy and transmission electron microscopy were used to provide insight into the morphology of the nanocomposite. Using energy-dispersive X-ray spectroscopy, it was possible to confirm that the graphene flakes were homogeneously coated with ZnO. The crystallite size of the ZnO nanoparticles in the new composite was determined using X-ray powder diffraction. The capacity of Z-G to enhance the toxicity of the anticancer drug Paclitaxel towards breast cancer cells was assessed via a cell viability study, showing the remarkable anticancer activity of the obtained system. Such results support the potential use of Z-G as an anticancer agent in combination with a common chemotherapeutic like Paclitaxel, leading to new chemotherapeutic formulations.
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- 2024
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287. Temporal Behavior Trees - Segmentation.
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Sebastian Schirmer, Jasdeep Singh, Emily Jensen, Johann C. Dauer, Bernd Finkbeiner, and Sriram Sankaranarayanan 0001
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- 2024
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288. Acute ischaemic stroke associated with SARS-CoV-2 infection in North America
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Dmytriw, Adam A, Dibas, Mahmoud, Phan, Kevin, Efendizade, Aslan, Johanna, Ospel, Schirmer, Clemens, Settecase, Fabio, Heran, Manraj KS, Kühn, Anna Luisa, Puri, Ajit S, Menon, Bijoy K, Sivakumar, Sanjeev, Mowla, Askan, Vela-Duarte, Daniel, Linfante, Italo, Dabus, Guilherme C, Regenhardt, Robert W, D'Amato, Salvatore, Rosenthal, Joseph A, Zha, Alicia, Talukder, Nafee, Sheth, Sunil A, Hassan, Ameer E, Cooke, Daniel L, Leung, Lester Y, Malek, Adel M, Voetsch, Barbara, Sehgal, Siddharth, Wakhloo, Ajay K, Goyal, Mayank, Wu, Hannah, Cohen, Jake, Ghozy, Sherief, Turkel-Parella, David, Farooq, Zerwa, Vranic, Justin, Rabinov, James D, Stapleton, Christopher J, Minhas, Ramandeep, Velayudhan, Vinodkumar, Chaudhry, Zeshan Ahmed, Xavier, Andrew, Bullrich, Maria Bres, Pandey, Sachin, Sposato, Luciano A, Johnson, Stephen A, Gupta, Gaurav, Khandelwal, Priyank, Ali, Latisha, Liebeskind, David S, Farooqui, Mudassir, Ortega-Gutierrez, Santiago, Nahab, Fadi, Jillella, Dinesh V, Chen, Karen, Aziz-Sultan, Mohammad Ali, Abdalkader, Mohamad, Kaliaev, Artem, Nguyen, Thanh N, Haussen, Diogo C, Nogueira, Raul G, Haq, Israr Ul, Zaidat, Osama O, Sanborn, Emma, Leslie-Mazwi, Thabele M, Patel, Aman B, Siegler, James E, and Tiwari, Ambooj
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Biomedical and Clinical Sciences ,Clinical Sciences ,Stroke ,Clinical Research ,Neurosciences ,Good Health and Well Being ,Brain Ischemia ,COVID-19 ,Humans ,Ischemic Stroke ,Middle Aged ,Retrospective Studies ,SARS-CoV-2 ,Thrombectomy ,Treatment Outcome ,stroke ,interventional ,North American Neurovascular COVID-19 (NAN-C) Consortium & Society of Vascular and Interventional Neurology (SVIN) Investigators ,Medical and Health Sciences ,Psychology and Cognitive Sciences ,Neurology & Neurosurgery ,Clinical sciences - Abstract
BackgroundTo analyse the clinical characteristics of COVID-19 with acute ischaemic stroke (AIS) and identify factors predicting functional outcome.MethodsMulticentre retrospective cohort study of COVID-19 patients with AIS who presented to 30 stroke centres in the USA and Canada between 14 March and 30 August 2020. The primary endpoint was poor functional outcome, defined as a modified Rankin Scale (mRS) of 5 or 6 at discharge. Secondary endpoints include favourable outcome (mRS ≤2) and mortality at discharge, ordinal mRS (shift analysis), symptomatic intracranial haemorrhage (sICH) and occurrence of in-hospital complications.ResultsA total of 216 COVID-19 patients with AIS were included. 68.1% (147/216) were older than 60 years, while 31.9% (69/216) were younger. Median [IQR] National Institutes of Health Stroke Scale (NIHSS) at presentation was 12.5 (15.8), and 44.2% (87/197) presented with large vessel occlusion (LVO). Approximately 51.3% (98/191) of the patients had poor outcomes with an observed mortality rate of 39.1% (81/207). Age >60 years (aOR: 5.11, 95% CI 2.08 to 12.56, p
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- 2022
289. Online Instruction in Higher Education: Promising, Research-Based, and Evidence-Based Practices
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Lockman, Alison S. and Schirmer, Barbara R.
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The purpose of this study was to review the research literature on online learning to identify effective instructional practices. We narrowed our scope to empirical studies published 2013-2019 given that studies earlier than 2013 had become quickly outdated because of changes in online pedagogies and technologies. We also limited our search to studies with undergraduate and graduate students, application of an empirical methodological design, and descriptions of methodology, data analysis, and results with sufficient detail to assure verifiability of data collection and analysis. Our analysis of the patterns and trends in the corpus of 104 research studies led to identification of five themes: course design factors, student support, faculty pedagogy, student engagement, and student success factors. Most of the strategies with promising effectiveness in the online environment are the same ones that are considered to be effective in face-to-face classrooms including the use of multiple pedagogies and learning resources to address different student learning needs, high instructor presence, quality of faculty-student interaction, academic support outside of class, and promotion of classroom cohesion and trust. Unique to the online environment are user-friendly technology tools, orientation to online instruction, opportunities for synchronous class sessions, and incorporation of social media. Given the few studies utilizing methodological designs from which claims of causality can be made or meta-analyses could be conducted, we identified only faculty feedback as an evidence-based practice and no specific intervention that we could identify as research-based in online instruction.
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- 2020
290. Computational Performance and Energy Efficiency of ARM based HPC servers.
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Oskar Schirmer
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- 2024
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291. Test-Time Adaptation with State-Space Models.
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Mona Schirmer, Dan Zhang, and Eric T. Nalisnick
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- 2024
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292. GeoFF: Federated Serverless Workflows with Data Pre-Fetching.
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Valentin Carl, Trever Schirmer, Tobias Pfandzelter, and David Bermbach
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- 2024
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293. GeoFaaS: An Edge-to-Cloud FaaS Platform.
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Mohammadreza Malekabbasi, Tobias Pfandzelter, Trever Schirmer, and David Bermbach
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- 2024
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294. Texture Feature Analysis for Classification of Early-Stage Prostate Cancer in mpMRI.
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Asmail Muftah, S. M. Schirmer, and Frank C. Langbein
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- 2024
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295. ElastiBench: Scalable Continuous Benchmarking on Cloud FaaS Platforms.
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Trever Schirmer, Tobias Pfandzelter, and David Bermbach
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- 2024
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296. Close to Human-Level Agreement: Tracing Journeys of Violent Speech in Incel Posts with GPT-4-Enhanced Annotations.
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Daniel Matter, Miriam Schirmer, Nir Grinberg, and Jürgen Pfeffer
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- 2024
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297. High-Resolution Detection of Earth Structural Heterogeneities from Seismic Amplitudes using Convolutional Neural Networks with Attention layers.
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Luiz Schirmer, Guilherme G. Schardong, Vinícius da Silva, Rogério Santos, and Hélio Lopes 0001
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- 2024
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298. AutoCorres2.
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Matthew Brecknell, David Greenaway, Johannes Hölzl, Fabian Immler, Gerwin Klein, Rafal Kolanski, Japheth Lim, Michael Norrish, Norbert Schirmer, Salomon Sickert, Thomas Sewell, Harvey Tuch, and Simon Wimmer 0001
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- 2024
299. Reinforcement Learning vs. Gradient-Based Optimisation for Robust Energy Landscape Control of Spin-1/2 Quantum Networks
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Khalid, I., Weidner, C. A., Jonckheere, E. A., Schirmer, S. G., and Langbein, F. C.
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Quantum Physics ,Mathematics - Optimization and Control - Abstract
We explore the use of policy gradient methods in reinforcement learning for quantum control via energy landscape shaping of XX-Heisenberg spin chains in a model agnostic fashion. Their performance is compared to finding controllers using gradient-based L-BFGS optimisation with restarts, with full access to an analytical model. Hamiltonian noise and coarse-graining of fidelity measurements are considered. Reinforcement learning is able to tackle challenging, noisy quantum control problems where L-BFGS optimization algorithms struggle to perform well. Robustness analysis under different levels of Hamiltonian noise indicates that controllers found by reinforcement learning appear to be less affected by noise than those found with L-BFGS., Comment: 7 pages, 7 figures
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- 2021
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300. Cross-Modal Analysis of Human Detection for Robotics: An Industrial Case Study
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Linder, Timm, Vaskevicius, Narunas, Schirmer, Robert, and Arras, Kai O.
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Computer Science - Robotics ,Computer Science - Computer Vision and Pattern Recognition - Abstract
Advances in sensing and learning algorithms have led to increasingly mature solutions for human detection by robots, particularly in selected use-cases such as pedestrian detection for self-driving cars or close-range person detection in consumer settings. Despite this progress, the simple question "which sensor-algorithm combination is best suited for a person detection task at hand?" remains hard to answer. In this paper, we tackle this issue by conducting a systematic cross-modal analysis of sensor-algorithm combinations typically used in robotics. We compare the performance of state-of-the-art person detectors for 2D range data, 3D lidar, and RGB-D data as well as selected combinations thereof in a challenging industrial use-case. We further address the related problems of data scarcity in the industrial target domain, and that recent research on human detection in 3D point clouds has mostly focused on autonomous driving scenarios. To leverage these methodological advances for robotics applications, we utilize a simple, yet effective multi-sensor transfer learning strategy by extending a strong image-based RGB-D detector to provide cross-modal supervision for lidar detectors in the form of weak 3D bounding box labels. Our results show a large variance among the different approaches in terms of detection performance, generalization, frame rates and computational requirements. As our use-case contains difficulties representative for a wide range of service robot applications, we believe that these results point to relevant open challenges for further research and provide valuable support to practitioners for the design of their robot system., Comment: Accepted for publication at 2021 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
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- 2021
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