715 results on '"Malle P"'
Search Results
2. On minimal positive heights for blocks of almost quasi-simple groups
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Malle, Gunter and Fry, A. A. Schaeffer
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C15, 20C20, 20C33 - Abstract
The Eaton--Moret\'o conjecture extends the recently-proven Brauer height zero conjecture to blocks with non-abelian defect group, positing equality between the minimal positive heights of a block of a finite group and its defect group. Here we provide further evidence for the inequality in this conjecture that is not implied by Dade's conjecture. Specifically, we consider minimal counter-examples and show that these cannot be found among almost quasi-simple groups for $p\ge5$. Along the way, we observe that most such blocks have minimal positive height equal to~1.
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- 2024
3. Zeros of $S$-characters
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Malle, Gunter
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Mathematics - Group Theory ,Mathematics - Representation Theory ,20C15, 20D08, 20B05 - Abstract
The concept of $S$-characters of finite groups was introduced by Zhmud as a generalisation of transitive permutation characters. Any non-trivial $S$-character takes a zero value on some group element. By a deep result depending on the classification of finite simple groups a non-trivial transitive permutation character even vanishes on some element of prime power order. We present an example that this does not generalise to $S$-characters, thereby answering a question posed by J.-P. Serre., Comment: Added a further example
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- 2024
4. Decomposition numbers in the principal block and Sylow normalisers
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Malle, Gunter and Rizo, Noelia
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C15, 20C20, 20D20, 20C33 - Abstract
If G is a finite group and p is a prime number, we investigate the relationship between the p-modular decomposition numbers of characters of height zero in the principal p-block of G and the p-local structure of G.
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- 2024
5. Rationality of extended unipotent characters
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Dudas, Olivier and Malle, Gunter
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- 2024
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6. Computational data on ${\mathfrak S}_n$-extensions of $\mathbb Q$
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Malle, Gunter
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Mathematics - Number Theory ,11N45, 11R45, 11Y40, secondary 11R29 - Abstract
We discuss computational results on field extensions $K/{\mathbb Q}$ of degree $n\le11$ with Galois group of the Galois closure isomorphic to the full symmetric group ${\mathfrak S}_n$. More precisely, we present statistics on the number of such extensions as a function of the field discriminant and compare them to the known predictions by Bhargava and the author. We also investigate the numbers of fields with equal discriminant and tabulate class numbers and class groups to compare them against Cohen--Lenstra--Martinet type of heuristics and their proposed improvements.
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- 2024
7. Autonomous Overhead Powerline Recharging for Uninterrupted Drone Operations
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Hoang, Viet Duong, Nyboe, Frederik Falk, Malle, Nicolaj Haarhøj, and Ebeid, Emad
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Computer Science - Robotics - Abstract
We present a fully autonomous self-recharging drone system capable of long-duration sustained operations near powerlines. The drone is equipped with a robust onboard perception and navigation system that enables it to locate powerlines and approach them for landing. A passively actuated gripping mechanism grasps the powerline cable during landing after which a control circuit regulates the magnetic field inside a split-core current transformer to provide sufficient holding force as well as battery recharging. The system is evaluated in an active outdoor three-phase powerline environment. We demonstrate multiple contiguous hours of fully autonomous uninterrupted drone operations composed of several cycles of flying, landing, recharging, and takeoff, validating the capability of extended, essentially unlimited, operational endurance., Comment: Accepted for publication at the 2024 IEEE International Conference on Robotics and Automation (ICRA). Video at https://www.youtube.com/watch?v=C-uekD6VTIQ
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- 2024
8. A Brauer--Galois height zero conjecture
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Malle, Gunter, Moretó, Alexander, Rizo, Noelia, and Fry, A. A. Schaeffer
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C15, 20C20, 20C33 - Abstract
Recently, Malle and Navarro obtained a Galois strengthening of Brauer's height zero conjecture for principal $p$-blocks when $p=2$, considering a particular Galois automorphism of order~$2$. In this paper, for any prime $p$ we consider a certain elementary abelian $p$-subgroup of the absolute Galois group and propose a Galois version of Brauer's height zero conjecture for principal $p$-blocks. We prove it when $p=2$ and also for arbitrary $p$ when $G$ does not involve certain groups of Lie type of small rank as composition factors. Furthermore, we prove it for almost simple groups and for $p$-solvable groups., Comment: a few minor improvements over version 1
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- 2024
9. Jordan correspondence and block distribution of characters
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Kessar, Radha and Malle, Gunter
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C15, 20C20, 20C33 - Abstract
We complete the determination of the $\ell$-block distribution of characters for quasi-simple exceptional groups of Lie type up to some minor ambiguities relating to non-uniqueness of Jordan decomposition. For this, we first determine the $\ell$-block distribution for finite reductive groups whose ambient algebraic group defined in characteristic different from $\ell$ has connected centre. As a consequence we derive a compatibility between $\ell$-blocks, $e$-Harish-Chandra series and Jordan decomposition. Further we apply our results to complete the proof of Robinson's conjecture on defects of characters.
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- 2023
10. Breast cancer cells utilize T3 to trigger proliferation through cellular Ca2+ modulation
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Tawfik, Ines, Schlick, Katharina, Ostaku, Julian, Bresilla, Doruntina, Gabrijelčič, Sonja, Gottschalk, Benjamin, Sokolowski, Alwin, Malle, Ernst, Kalinova, Katarina, Hirtl, Martin, and Madreiter-Sokolowski, Corina T.
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- 2024
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11. ER calcium depletion as a key driver for impaired ER-to-mitochondria calcium transfer and mitochondrial dysfunction in Wolfram syndrome
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Liiv, Mailis, Vaarmann, Annika, Safiulina, Dzhamilja, Choubey, Vinay, Gupta, Ruby, Kuum, Malle, Janickova, Lucia, Hodurova, Zuzana, Cagalinec, Michal, Zeb, Akbar, Hickey, Miriam A., Huang, Yi-Long, Gogichaishvili, Nana, Mandel, Merle, Plaas, Mario, Vasar, Eero, Loncke, Jens, Vervliet, Tim, Tsai, Ting-Fen, Bultynck, Geert, Veksler, Vladimir, and Kaasik, Allen
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- 2024
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12. Breast cancer cells utilize T3 to trigger proliferation through cellular Ca2+ modulation
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Ines Tawfik, Katharina Schlick, Julian Ostaku, Doruntina Bresilla, Sonja Gabrijelčič, Benjamin Gottschalk, Alwin Sokolowski, Ernst Malle, Katarina Kalinova, Martin Hirtl, and Corina T. Madreiter-Sokolowski
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Thyroid hormones ,Calcium homeostasis ,Breast cancer ,IP3R3 ,Mitochondria ,Thyroid hormone receptor α ,Medicine ,Cytology ,QH573-671 - Abstract
Abstract High levels of thyroid hormones are linked to increased risk and advanced stages of breast cancer. Our previous work demonstrated that the biologically active triiodothyronine (T3) facilitates mitochondrial ATP production by upregulating Ca2+ handling proteins, thereby boosting mitochondrial Ca2+ uptake and Krebs cycle activity. In this study, different cell types were utilized to investigate whether T3 activates a Ca2+-induced signaling pathway to boost cancer cell proliferation. Using live-cell imaging, biochemical assays, and molecular profiling, differences in intracellular signaling among MCF7 and MDA-MB-468 breast cancer cells, non-cancerous breast cells hTERT-HME1, and PC3 prostate carcinoma cells, previously found to be insensitive to thyroid hormones in terms of proliferation, were investigated. Our findings revealed that T3 upregulates 1,4,5-trisphosphate receptor 3 via thyroid hormone receptor α. This boosts mitochondrial Ca2+ uptake, reduction equivalent yield, and mitochondrial ATP production, supporting the viability and proliferation of breast cancer cells without affecting non-cancerous hTERT-HME1 or PC3 prostate carcinoma cells. Understanding the interplay between T3 signaling, organellar interaction, and breast cancer metabolism could lead to targeted therapies that exploit cancer cell vulnerabilities. Our findings highlight T3 as a crucial regulator of cancer metabolism, reinforcing its potential as a therapeutic target in breast cancer. Graphical Abstract
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- 2024
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13. Scenario setup and forcing data for impact model evaluation and impact attribution within the third round of the Inter-Sectoral Model Intercomparison Project (ISIMIP3a)
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Frieler, Katja, Volkholz, Jan, Lange, Stefan, Schewe, Jacob, Mengel, Matthias, del Rocío Rivas López, María, Otto, Christian, Reyer, Christopher PO, Karger, Dirk Nikolaus, Malle, Johanna T, Treu, Simon, Menz, Christoph, Blanchard, Julia L, Harrison, Cheryl S, Petrik, Colleen M, Eddy, Tyler D, Ortega-Cisneros, Kelly, Novaglio, Camilla, Rousseau, Yannick, Watson, Reg A, Stock, Charles, Liu, Xiao, Heneghan, Ryan, Tittensor, Derek, Maury, Olivier, Büchner, Matthias, Vogt, Thomas, Wang, Tingting, Sun, Fubao, Sauer, Inga J, Koch, Johannes, Vanderkelen, Inne, Jägermeyr, Jonas, Müller, Christoph, Rabin, Sam, Klar, Jochen, del Valle, Iliusi D Vega, Lasslop, Gitta, Chadburn, Sarah, Burke, Eleanor, Gallego-Sala, Angela, Smith, Noah, Chang, Jinfeng, Hantson, Stijn, Burton, Chantelle, Gädeke, Anne, Li, Fang, Gosling, Simon N, Schmied, Hannes Müller, Hattermann, Fred, Wang, Jida, Yao, Fangfang, Hickler, Thomas, Marcé, Rafael, Pierson, Don, Thiery, Wim, Mercado-Bettín, Daniel, Ladwig, Robert, Ayala-Zamora, Ana Isabel, Forrest, Matthew, and Bechtold, Michel
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Earth Sciences ,Atmospheric Sciences ,Climate Action ,Earth sciences - Abstract
Abstract. This paper describes the rationale and the protocol of the first component of the third simulation round of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP3a, http://www.isimip.org, last access: 2 November 2023) and the associated set of climate-related and direct human forcing data (CRF and DHF, respectively). The observation-based climate-related forcings for the first time include high-resolution observational climate forcings derived by orographic downscaling, monthly to hourly coastal water levels, and wind fields associated with historical tropical cyclones. The DHFs include land use patterns, population densities, information about water and agricultural management, and fishing intensities. The ISIMIP3a impact model simulations driven by these observation-based climate-related and direct human forcings are designed to test to what degree the impact models can explain observed changes in natural and human systems. In a second set of ISIMIP3a experiments the participating impact models are forced by the same DHFs but a counterfactual set of atmospheric forcings and coastal water levels where observed trends have been removed. These experiments are designed to allow for the attribution of observed changes in natural, human, and managed systems to climate change, rising CH4 and CO2 concentrations, and sea level rise according to the definition of the Working Group II contribution to the IPCC AR6.
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- 2024
14. Are autonomous vehicles blamed differently?
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Stojilović, Darko, Franklin, Matija, Malle, Bertram F., Fernandez-Basso, Carlos, Awad, Edmond, and Lagnado, David
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Artificial Intelligence ,Psychology ,Social cognition ,Statistics ,Survey - Abstract
This study investigates how people assign blame to autonomous vehicles (AVs) when involved in an accident. Our experiment (N = 2647) revealed that people placed more blame on AVs than on human drivers when accident details were unspecified. To examine whether people assess major classes of blame-relevant information differently for AVs and humans, we developed a causal model and introduced a novel concept of prevention effort, which emerged as a crucial factor for blame judgement alongside intentionality. Finally, we addressed the “many hands” problem by exploring how people assign blame to entities associated with AVs and human drivers, such as the car company or an accident victim. Our findings showed that people assigned high blame to these entities in scenarios involving AVs, but not with human drivers. This necessitates adapting a model of blame for AVs to include other agents and thus allow for blame allocation “outside” of autonomous vehicles.
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- 2024
15. Human Perceptions of Canine Intelligence
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Ross, Miriam, Buchsbaum, Daphna, and Malle, Bertram F.
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Anthropology ,Psychology ,Animal cognition ,Cognitive Humanities ,Human Factors - Abstract
What makes Lassie a smart dog? People have strong intui-tions about dogs' intelligence, yet the content and organiza-tion of these intuitions remain unknown. Two studies ex-amined the structure of laypeople's concepts of dog intelli-gence, creating a conceptual map of what people represent as a “smart” or “dumb” dog. Study 1 elicited open-ended ideas about dog intelligence. We turned consistent themes into items in a 50-item survey. Study 2 asked participants to picture either a smart or dumb dog and rate that dog on the items derived from Study 1. Participants strongly agreed in their ratings of smart and dumb dogs, and we discovered a coherent dimensional structure underlying people's intui-tions. They represent smart dogs as socially skilled with a good temperament, and dumb dogs as bad at physical rea-soning and avoiding threats. These representations align well with findings from canine research and with dog train-ers' practical knowledge.
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- 2024
16. Dissociated Responses to AI: Persuasive But Not Trustworthy?
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Aydin, Zeynep and Malle, Bertram F.
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Artificial Intelligence ,Psychology ,Human-computer interaction ,Intelligent agents ,Reasoning ,Social cognition ,Survey - Abstract
Empirical work on people's perceptions of AI advisors has found evidence for both “algorithm aversion” and “algorithm appreciation.” We investigated whether these differing reactions stem from two different paths of processing: assessing the content of the advice and evaluating the source (AI vs. human advisor). In two survey studies, people were as strongly persuaded by the advice of an AI as that of a human advisor; nonetheless, people's approval of and trust in the AI advisor was consistently lower. This pattern of dissociation suggests that algorithm aversion and algorithm appreciation can occur at the same time, but along different response paths.
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- 2024
17. Resource allocation algorithm for 5G and B5G D2D underlay wireless cellular networks
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Gopal, Malle and Velmurugan, T.
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- 2024
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18. Weights for compact connected Lie groups
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Kessar, Radha, Malle, Gunter, and Semeraro, Jason
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- 2024
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19. OSG-PLL-based method of a solar PV grid-interfaced transformer-less cascaded H-bridge multilevel inverter for power quality enhancement
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Malle, Lingamaiah, Mittal, Arvind, and Kumar, Shailendra
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- 2024
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20. Efficient hybrid resource allocation for uplink and downlink device-to-device underlay communication in 5G and beyond wireless networks
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Gopal, Malle and Velmurugan, T.
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- 2024
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21. Minimal heights and defect groups with two character degrees
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Malle, Gunter, Moretó, Alexander, and Rizo, Noelia
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Mathematics - Representation Theory ,Mathematics - Group Theory - Abstract
Conjecture A of \cite{EM14} predicts the equality between the smallest positive height of the irreducible characters in a $p$-block of a finite group and the smallest positive height of the irreducible characters in its defect group. Hence, it can be seen as a generalization of Brauer's famous height zero conjecture. One inequality was shown to be a consequence of Dade's Projective Conjecture. We prove the other, less well understood, inequality for principal blocks when the defect group has two character degrees., Comment: to appear in Adv. Math
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- 2023
22. Regionally optimized high-resolution input datasets enhance the representation of snow cover in CLM5
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J. T. Malle, G. Mazzotti, D. N. Karger, and T. Jonas
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Science ,Geology ,QE1-996.5 ,Dynamic and structural geology ,QE500-639.5 - Abstract
Land surface processes, crucial for exchanging carbon, nitrogen, water, and energy between the atmosphere and terrestrial Earth, significantly impact the climate system. Many of these processes vary considerably at small spatial and temporal scales, in particular in mountainous terrain and complex topography. To examine the impact of spatial resolution and representativeness of input data on modelled land surface processes, we conducted simulations using the Community Land Model 5 (CLM5) at different resolutions and based on a range of input datasets over the spatial extent of Switzerland. Using high-resolution meteorological forcing and land use data, we found that increased resolution substantially improved the representation of snow cover in CLM5 (up to 52 % enhancement), allowing CLM5 to closely match performance of a dedicated snow model. However, a simple lapse-rate-based temperature downscaling provided large positive effects on model performance, even if simulations were based on coarse-resolution forcing datasets only. Results demonstrate the need for resolutions higher than 0.25° for accurate snow simulations in topographically complex terrain. These findings have profound implications for climate impact studies. As improvements were observed across the cascade of dependencies in the land surface model, high spatial resolution and high-quality forcing data become necessary for accurately capturing the effects of a declining snow cover and consequent shifts in the vegetation period, particularly in mountainous regions. This study further highlights the utility of multi-resolution modelling experiments when aiming to improve representation of variables in land surface models. By embracing high-resolution modelling, we can enhance our understanding of the land surface and its response to climate change.
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- 2024
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23. Weights for compact connected Lie groups
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Kessar, Radha, Malle, Gunter, and Semeraro, Jason
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Mathematics - Representation Theory ,Mathematics - Algebraic Topology ,Mathematics - Group Theory ,20C20, 55R35, 57T10 - Abstract
Let $\ell$ be a prime. If ${\mathbf G} $ is a compact connected Lie group, or a connected reductive algebraic group in characteristic different from $\ell$, and $\ell$ is a good prime for ${\mathbf G}$, we show that the number of weights of the $\ell$-fusion system of ${\mathbf G}$ is equal to the number of irreducible characters of its Weyl group. The proof relies on the classification of $\ell$-stubborn subgroups in compact Lie groups.
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- 2023
24. Application of antimicrobial edible film incorporated with Caulerpa racemosa crude extract as active packaging of seaweed dodol
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Arham Rusli, Syamsuar, Andi Santi, Sriwati Malle, Fifi Arfini, Muh Ali Arsyad, Ikbal Syukroni, and Mita Gebriella Inthe
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Active packaging ,Antimicrobial ,Chemical composition ,Edible film ,Shelf life ,Food processing and manufacture ,TP368-456 - Abstract
Using seaweed-based antimicrobial edible films containing antimicrobial seaweed extracts in food products has maintained product quality during storage. Caulerpa extracts have the potential to be antimicrobial and antioxidant agents. However, no research has been conducted regarding applying Caulerpa extract edible film to semi-wet food products, especially seaweed dodol. This study examines changes in the chemical composition and shelf life of seaweed dodol packaged with antimicrobial edible films made from agar added with crude extract of Caulerpa racemosa. The study employed a completely randomized design with two variables: packaging type and storage duration. The packaging types included an unpackaged (control), an antimicrobial edible coating (AEC), and the antimicrobial edible film (AEF), while the storage period was set to 6 days. The observed research parameters included changes in chemical quality and total microbes. Data on changes in the composition of free fatty acids and total plate numbers are also used to calculate shelf life. The results showed that using AEF as the primary packaging of seaweed dodol can inhibit changes in chemical composition during storage, especially moisture, carbohydrates and fats. The barrier to moisture and oxygen from AEF inhibits the chemical composition deterioration of the coated food product, which has an impact on increasing the product's shelf life. Seaweed dodol packaged with AEF demonstrated an extended shelf life by 2 days compared to both the control and AEC-packaged samples. Antimicrobial edible film of crude extract of C. racemosa has the potential to be developed as primary packaging in semi-wet food products.
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- 2024
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25. ER calcium depletion as a key driver for impaired ER-to-mitochondria calcium transfer and mitochondrial dysfunction in Wolfram syndrome
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Mailis Liiv, Annika Vaarmann, Dzhamilja Safiulina, Vinay Choubey, Ruby Gupta, Malle Kuum, Lucia Janickova, Zuzana Hodurova, Michal Cagalinec, Akbar Zeb, Miriam A. Hickey, Yi-Long Huang, Nana Gogichaishvili, Merle Mandel, Mario Plaas, Eero Vasar, Jens Loncke, Tim Vervliet, Ting-Fen Tsai, Geert Bultynck, Vladimir Veksler, and Allen Kaasik
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Science - Abstract
Abstract Wolfram syndrome is a rare genetic disease caused by mutations in the WFS1 or CISD2 gene. A primary defect in Wolfram syndrome involves poor ER Ca2+ handling, but how this disturbance leads to the disease is not known. The current study, performed in primary neurons, the most affected and disease-relevant cells, involving both Wolfram syndrome genes, explains how the disturbed ER Ca2+ handling compromises mitochondrial function and affects neuronal health. Loss of ER Ca2+ content and impaired ER-mitochondrial contact sites in the WFS1- or CISD2-deficient neurons is associated with lower IP3R-mediated Ca2+ transfer from ER to mitochondria and decreased mitochondrial Ca2+ uptake. In turn, reduced mitochondrial Ca2+ content inhibits mitochondrial ATP production leading to an increased NADH/NAD+ ratio. The resulting bioenergetic deficit and reductive stress compromise the health of the neurons. Our work also identifies pharmacological targets and compounds that restore Ca2+ homeostasis, enhance mitochondrial function and improve neuronal health.
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- 2024
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26. Height Zero Conjecture with Galois Automorphisms
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Malle, Gunter and Navarro, Gabriel
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C15, 20C33 - Abstract
We prove a strengthening of Brauer's height zero conjecture for principal 2-blocks with Galois automorphisms. This requires a new extension of the It\^o--Michler theorem for the prime~2, again with Galois automorphisms. We close, this time for odd primes $p$, with a new characterisation of $p$-closed groups via the decomposition numbers of certain characters., Comment: to appear in J. London Math. Soc
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- 2022
27. Brauer's Height Zero Conjecture
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Malle, Gunter, Navarro, Gabriel, Fry, Amanda A. Schaeffer, and Tiep, Pham Huu
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C20, 20C15, 20C33 - Abstract
We complete the proof of Brauer's Height Zero Conjecture from 1955 by establishing the open implication for all odd primes., Comment: To appear in Annals of Math
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- 2022
28. Human perceptions of social robot deception behaviors: an exploratory analysis
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Andres Rosero, Elizabeth Dula, Harris Kelly, Bertram F. Malle, and Elizabeth K. Phillips
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human-robot interaction ,justifications ,deception ,robots ,deceptive anthropomorphism ,Mechanical engineering and machinery ,TJ1-1570 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
IntroductionRobots are being introduced into increasingly social environments. As these robots become more ingrained in social spaces, they will have to abide by the social norms that guide human interactions. At times, however, robots will violate norms and perhaps even deceive their human interaction partners. This study provides some of the first evidence for how people perceive and evaluate robot deception, especially three types of deception behaviors theorized in the technology ethics literature: External state deception (cues that intentionally misrepresent or omit details from the external world: e.g., lying), Hidden state deception (cues designed to conceal or obscure the presence of a capacity or internal state the robot possesses), and Superficial state deception (cues that suggest a robot has some capacity or internal state that it lacks).MethodsParticipants (N = 498) were assigned to read one of three vignettes, each corresponding to one of the deceptive behavior types. Participants provided responses to qualitative and quantitative measures, which examined to what degree people approved of the behaviors, perceived them to be deceptive, found them to be justified, and believed that other agents were involved in the robots’ deceptive behavior.ResultsParticipants rated hidden state deception as the most deceptive and approved of it the least among the three deception types. They considered external state and superficial state deception behaviors to be comparably deceptive; but while external state deception was generally approved, superficial state deception was not. Participants in the hidden state condition often implicated agents other than the robot in the deception.ConclusionThis study provides some of the first evidence for how people perceive and evaluate the deceptiveness of robot deception behavior types. This study found that people people distinguish among the three types of deception behaviors and see them as differently deceptive and approve of them differently. They also see at least the hidden state deception as stemming more from the designers than the robot itself.
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- 2024
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29. Changes of individual retinal layer thickness post-uneventful cataract surgery determined by spectral-domain optical coherence tomography over a 3-months period
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Manuel Großpötzl, Eva Maria Malle, Regina Riedl, Jakob Daniel Gran, Daniel Djavid, Laura Posch-Pertl, Wilfried Maximilian Glatz, Thomas Falb, Ewald Lindner, Andreas Wedrich, and Domagoj Ivastinovic
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Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Purpose: To evaluate retinal thickness changes of individual retinal layers using spectral-domain optical coherence tomography (SD-OCT) after uneventful cataract surgery over a 3-months period. Design: Prospective cohort study. Methods: 41 patients who underwent uneventful cataract surgery were included. Retinal SD-OCT images of both eyes were acquired preoperatively, 1 day after surgery as well as 1 month and 3 months postoperatively. Changes of retinal layer thickness were estimated after semi-automated segmentation for the following individual layers in the central subfield (CS, 1 mm) and inner ring (IR, 1–3 mm) of the early treatment diabetic retinopathy study (ETDRS) grid: retinal nerve fiber layer (RNFL), ganglion cell layer (GCL), inner plexiform layer (IPL), RNFL-GCL-IPL complex, inner nuclear layer (INL), outer plexiform layer (OPL), INL-OPL complex, outer nuclear layer (ONL), inner retina layer (IRL) and the total retina (TR). Furthermore, a sub-analysis with exclusion of patients devoid CME and an analysis in regard of patient age, lens status of the fellow eye, best corrected visual acuity and duration of surgery was conducted. Results: This study found significant alterations in all analysed retinal layers except for the RNFL (p = 0.33) and the GCL (p = 0.06) in the central subfield and the INL-OPL complex (p = 0.07) in the inner ring over the 3-months period (all p
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- 2024
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30. Projective indecomposable permutation modules
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Malle, Gunter and Robinson, Geoffrey R.
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C15, 20C20, 20C30, 20C33 - Abstract
We investigate finite non-Abelian simple groups $G$ for which the projective cover of the trivial module coincides with the permutation module on a subgroup and classify all cases unless $G$ is of Lie type in defining characteristic.
- Published
- 2022
31. Resiliency through Partnerships: Prioritizing STEM Workforce Pathways Amid Macro Challenges
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Mathieson, Danny, Cotrupi, Catherine, Schilling, Malle, and Grohs, Jake
- Abstract
Multi-institutional educational partnerships are a promising approach to developing the skilled technical workforce. Inexorably, the ability to maintain such partnership networks that support skilled technical workforce education was disrupted by COVID-19. The purpose of this study is to explore Southwest Virginia's science, technology, engineering, and mathematics (STEM)-focused multi-institutional partnership networks, to inventory the disruptive impacts of COVID-19, and to identify how partnership stakeholders navigated these challenges to prepare students for the skilled technical workforce. This work presents a single-case study design, highlighting the evolving landscape of STEM workforce education partnership networks in Southwest Virginia throughout the pandemic. The team conducted interviews with 19 regional stakeholders focused on the participants' role throughout the pandemic, barriers to STEM workforce education presented by public health and economic factors, and innovative strategies to sustain and expand partnership networks through COVID-19. Two key themes emerged from this study: successful partners maintained network connections through adaptive interactions and actors within the network served as brokers to leverage their connections and expand partnerships in the face of adversity. By taking a contextual view of the role of partnership networks in creating equitable STEM workforce pathways during COVID-19, we develop rich insights into partnership formation, collaboration, resource allocation, and programming amidst challenges to their success.
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- 2023
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32. Clinical and nutritional correlates of bacterial diarrhoea aetiology in young children: a secondary cross-sectional analysis of the ABCD trial
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Jie Liu, Christopher R Sudfeld, Per Ashorn, Queen Dube, Tahmeed Ahmed, Pratibha Dhingra, Usha Dhingra, Arup Dutta, Sunil Sazawal, Karim Manji, Rodrick Kisenge, Mohamed Bakari, Christopher P Duggan, Rajiv Bahl, Naor Bar-Zeev, Ayesha De Costa, Nigel Cunliffe, Sadia Shakoor, Desiree Witte, Doreen Rwigi, Judd L Walson, Shahida Qureshi, Eric Houpt, James Platts-mills, Jonathon Simon, Chifundo Ndamala, Sarah Somji, Abraham Samma, Fadima Cheick Haidara, Karen Kotloff, Emily L Deichsel, Md Chisti, Benson Singa, Patricia Pavlinac, Samba Sow, Mohammad Tahir Yousafzai, Farah Qamar, Muhammad Waliur Rahman, Irin Parvin, Md. Farhad Kabir, Anil Kumar Sharma, Vijay Kumar Jaiswal, Churchil Nyabinda, Christine McGrath, Maurine Anyango, Kevin Mwangi Kariuki, Stephanie N Tornberg-Belanger, Flanon Coulibaly, Jasnehta Permala-Booth, Dramane Malle, Latif Ndeketa, Rozina Thobani, Jan Mohammed, and Cecylia Msemwa
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Pediatrics ,RJ1-570 - Abstract
Objective The objective was to assess the association between nutritional and clinical characteristics and quantitative PCR (qPCR)-diagnosis of bacterial diarrhoea in a multicentre cohort of children under 2 years of age with moderate to severe diarrhoea (MSD).Design A secondary cross-sectional analysis of baseline data collected from the AntiBiotics for Children with Diarrhoea trial (NCT03130114).Patients Children with MSD (defined as >3 loose stools within 24 hours and presenting with at least one of the following: some/severe dehydration, moderate acute malnutrition (MAM) or severe stunting) enrolled in the ABCD trial and collected stool sample.Study period June 2017–July 2019.Interventions None.Main outcome measures Likely bacterial aetiology of diarrhoea. Secondary outcomes included specific diarrhoea aetiology.Results A total of 6692 children with MSD had qPCR results available and 28% had likely bacterial diarrhoea aetiology. Compared with children with severe stunting, children with MAM (adjusted OR (aOR) (95% CI) 1.56 (1.18 to 2.08)), some/severe dehydration (aOR (95% CI) 1.66 (1.25 to 2.22)) or both (aOR (95% CI) 2.21 (1.61 to 3.06)), had higher odds of having likely bacterial diarrhoea aetiology. Similar trends were noted for stable toxin-enterotoxigenic Escherichia coli aetiology. Clinical correlates including fever and prolonged duration of diarrhoea were not associated with likely bacterial aetiology; children with more than six stools in the previous 24 hours had higher odds of likely bacterial diarrhoea (aOR (95% CI) 1.20 (1.05 to 1.36)) compared with those with fewer stools.Conclusion The presence of MAM, dehydration or high stool frequency may be helpful in identifying children with MSD who might benefit from antibiotics.
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- 2024
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33. Microclimate mapping using novel radiative transfer modelling
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F. Zellweger, E. Sulmoni, J. T. Malle, A. Baltensweiler, T. Jonas, N. E. Zimmermann, C. Ginzler, D. N. Karger, P. De Frenne, D. Frey, and C. Webster
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Ecology ,QH540-549.5 ,Life ,QH501-531 ,Geology ,QE1-996.5 - Abstract
Climate data matching the scales at which organisms experience climatic conditions are often missing. Yet, such data on microclimatic conditions are required to better understand climate change impacts on biodiversity and ecosystem functioning. Here we combine a network of microclimate temperature measurements across different habitats and vertical heights with a novel radiative transfer model to map daily temperatures during the vegetation period at 10 m spatial resolution across Switzerland. Our results reveal strong horizontal and vertical variability in microclimate temperature, particularly for maximum temperatures at 5 cm above the ground and within the topsoil. Compared to macroclimate conditions as measured by weather stations outside forests, diurnal air and topsoil temperature ranges inside forests were reduced by up to 3.0 and 7.8 ∘C, respectively, while below trees outside forests, e.g. in hedges and below solitary trees, this buffering effect was 1.8 and 7.2 ∘C, respectively. We also found that, in open grasslands, maximum temperatures at 5 cm above ground are, on average, 3.4 ∘C warmer than those of the macroclimate, suggesting that, in such habitats, heat exposure close to the ground is often underestimated when using macroclimatic data. Spatial interpolation was achieved by using a hybrid approach based on linear mixed-effect models with input from detailed radiation estimates from radiative transfer models that account for topographic and vegetation shading, as well as other predictor variables related to the macroclimate, topography, and vegetation height. After accounting for macroclimate effects, microclimate patterns were primarily driven by radiation, with particularly strong effects on maximum temperatures. Results from spatial block cross-validation revealed predictive accuracies as measured by root mean squared errors ranging from 1.18 to 3.43 ∘C, with minimum temperatures being predicted more accurately overall than maximum temperatures. The microclimate-mapping methodology presented here enables a biologically relevant perspective when analysing climate–species interactions, which is expected to lead to a better understanding of biotic and ecosystem responses to climate and land use change.
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- 2024
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34. Scenario setup and forcing data for impact model evaluation and impact attribution within the third round of the Inter-Sectoral Model Intercomparison Project (ISIMIP3a)
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K. Frieler, J. Volkholz, S. Lange, J. Schewe, M. Mengel, M. del Rocío Rivas López, C. Otto, C. P. O. Reyer, D. N. Karger, J. T. Malle, S. Treu, C. Menz, J. L. Blanchard, C. S. Harrison, C. M. Petrik, T. D. Eddy, K. Ortega-Cisneros, C. Novaglio, Y. Rousseau, R. A. Watson, C. Stock, X. Liu, R. Heneghan, D. Tittensor, O. Maury, M. Büchner, T. Vogt, T. Wang, F. Sun, I. J. Sauer, J. Koch, I. Vanderkelen, J. Jägermeyr, C. Müller, S. Rabin, J. Klar, I. D. Vega del Valle, G. Lasslop, S. Chadburn, E. Burke, A. Gallego-Sala, N. Smith, J. Chang, S. Hantson, C. Burton, A. Gädeke, F. Li, S. N. Gosling, H. Müller Schmied, F. Hattermann, J. Wang, F. Yao, T. Hickler, R. Marcé, D. Pierson, W. Thiery, D. Mercado-Bettín, R. Ladwig, A. I. Ayala-Zamora, M. Forrest, and M. Bechtold
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Geology ,QE1-996.5 - Abstract
This paper describes the rationale and the protocol of the first component of the third simulation round of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP3a, http://www.isimip.org, last access: 2 November 2023) and the associated set of climate-related and direct human forcing data (CRF and DHF, respectively). The observation-based climate-related forcings for the first time include high-resolution observational climate forcings derived by orographic downscaling, monthly to hourly coastal water levels, and wind fields associated with historical tropical cyclones. The DHFs include land use patterns, population densities, information about water and agricultural management, and fishing intensities. The ISIMIP3a impact model simulations driven by these observation-based climate-related and direct human forcings are designed to test to what degree the impact models can explain observed changes in natural and human systems. In a second set of ISIMIP3a experiments the participating impact models are forced by the same DHFs but a counterfactual set of atmospheric forcings and coastal water levels where observed trends have been removed. These experiments are designed to allow for the attribution of observed changes in natural, human, and managed systems to climate change, rising CH4 and CO2 concentrations, and sea level rise according to the definition of the Working Group II contribution to the IPCC AR6.
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- 2024
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35. ON ALPERIN’S LOWER BOUND FOR THE NUMBER OF BRAUER CHARACTERS
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MALLE, GUNTER, NAVARRO, GABRIEL, and TIEP, PHAM HUU
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- 2023
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36. The principal block of a $\mathbb{Z}_\ell$-spets and Yokonuma type algebras
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Kessar, Radha, Malle, Gunter, and Semeraro, Jason
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C08, 20C20, 20F55, 20G40, 16G30, 20D20, 55R35 - Abstract
We formulate conjectures concerning the dimension of the principal block of a ${\mathbb Z}_\ell$-spets (as defined in our earlier paper), motivated by analogous statements for finite groups. We show that these conjectures hold in certain situations. For this we introduce and study a Yokonuma type algebra for torus normalisers in $\ell$-compact groups which may be of independent interest., Comment: slightly revised and reorganised version
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- 2021
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37. I Need Your Advice... Human Perceptions of Robot Moral Advising Behaviors
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Starr, Nichole D., Malle, Bertram, and Williams, Tom
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Computer Science - Robotics ,Computer Science - Computers and Society ,Computer Science - Human-Computer Interaction - Abstract
Due to their unique persuasive power, language-capable robots must be able to both act in line with human moral norms and clearly and appropriately communicate those norms. These requirements are complicated by the possibility that humans may ascribe blame differently to humans and robots. In this work, we explore how robots should communicate in moral advising scenarios, in which the norms they are expected to follow (in a moral dilemma scenario) may be different from those their advisees are expected to follow. Our results suggest that, in fact, both humans and robots are judged more positively when they provide the advice that favors the common good over an individual's life. These results raise critical new questions regarding people's moral responses to robots and the design of autonomous moral agents., Comment: in TRAITS Workshop Proceedings (arXiv:2103.12679) held in conjunction with Companion of the 2021 ACM/IEEE International Conference on Human-Robot Interaction, March 2021, Pages 709-711
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- 2021
38. On almost $p$-rational characters of $p'$-degree
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Hung, Nguyen Ngoc, Malle, Gunter, and Maróti, Attila
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Mathematics - Representation Theory ,Mathematics - Group Theory ,Primary 20C15, 20E45, 20D20, Secondary 20D05, 20D10 - Abstract
Let $p$ be a prime and $G$ a finite group. A complex character of $G$ is called almost $p$-rational if its values belong to a cyclotomic field $\mathbb{Q}(e^{2\pi i/n})$ for some $n\in \mathbb{Z}^+$ prime to $p$ or precisely divisible by $p$. We prove that, in contrast to usual $p$-rational characters, there are always "many" almost $p$-rational irreducible characters in finite groups. We obtain both explicit and asymptotic bounds for the number of almost $p$-rational irreducible characters of $G$ in terms of $p$. In fact, motivated by the McKay-Navarro conjecture, we obtain the same bound for the number of such characters of $p'$-degree and prove that, in the minimal situation, the number of almost $p$-rational irreducible $p'$-characters of $G$ coincides with that of $N_G(P)$ for $P\in\mathrm{Syl}_p(G)$. Lastly, we propose a new way to detect the cyclicity of Sylow $p$-subgroups of a finite group $G$ from its character table, using almost $p$-rational irreducible $p'$-characters and the blockwise refinement of the McKay-Navarro conjecture., Comment: 36 pages
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- 2021
39. Brauer's Height Zero Conjecture for Principal Blocks
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Malle, Gunter and Navarro, Gabriel
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Mathematics - Representation Theory ,20C20 - Abstract
We prove \emph{the other half} of Brauer's Height Zero Conjecture in the case of principal blocks.
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- 2021
40. Projective Indecomposable Permutation Modules
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Malle, Gunter and Robinson, Geoffrey R.
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- 2023
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41. On Willems' conjecture on Brauer character degrees
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Malle, Gunter
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C20, 20C30, 20C33 - Abstract
In 2005 Wolfgang Willems put forward a conjecture proposing a lower bound for the sum of squares of the degrees of the irreducible $p$-Brauer characters of a finite group $G$. We prove this conjecture for the prime $p=2$. For this we rely on the recent reduction of Willems' conjecture to a question on quasi-simple groups by Tong-Viet. We also verify the conditions of Tong-Viet for certain families of finite quasi-simple groups and odd primes. On the way we obtain lower bounds for the number of regular semisimple conjugacy classes in finite groups of Lie type.
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- 2020
42. Weight conjectures for $\ell$-compact groups and spetses
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Kessar, Radha, Malle, Gunter, and Semeraro, Jason
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Mathematics - Representation Theory ,Mathematics - Algebraic Topology ,20C20, 20D20, 20D06, 55R35 - Abstract
Fundamental conjectures in modular representation theory of finite groups, more precisely, Alperin's Weight Conjecture and Robinson's Ordinary Weight Conjecture, can be expressed in terms of fusion systems. We use fusion systems to connect the modular representation theory of finite groups of Lie type to the theory of $\ell$-compact groups. Under some mild conditions we prove that the fusion systems associated to homotopy fixed points of $\ell$-compact groups satisfy an equation which for finite groups of Lie type is equivalent to Alperin's Weight Conjecture. For finite reductive groups, Robinson's Ordinary Weight Conjecture is closely related to Lusztig's Jordan decomposition of characters and the corresponding results for Brauer $\ell$-blocks. Motivated by this, we define the principal block of a spets attached to a spetsial ${\mathbb Z}_\ell$-reflection group, using the fusion system related to it via $\ell$-compact groups, and formulate an analogue of Robinson's conjecture for this block. We prove this formulation for an infinite family of cases as well as for some groups of exceptional type. Our results not only provide further strong evidence for the validity of the weight conjectures, but also point toward some yet unknown structural explanation for them purely in the framework of fusion systems., Comment: revised version
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- 2020
43. The inductive blockwise Alperin weight condition for type $\mathsf C$ and the prime $2$
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Feng, Zhicheng and Malle, Gunter
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Mathematics - Representation Theory ,20C20, 20C33 - Abstract
We establish the inductive blockwise Alperin weight condition for simple groups of Lie type $\mathsf C$ and the bad prime $2$. As a main step, we derive a labelling set for the irreducible $2$-Brauer characters of the finite symplectic groups Sp$_{2n}(q)$ (with odd $q$), together with the action of automorphisms. As a further important ingredient we prove a Jordan decomposition for weights.
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- 2020
44. Overgroups of regular unipotent elements in simple algebraic groups
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Malle, Gunter and Testerman, Donna M.
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Mathematics - Group Theory ,Mathematics - Representation Theory ,20G05, 20G07, 20E28 - Abstract
We investigate positive-dimensional closed reductive subgroups of almost simple algebraic groups containing a regular unipotent element. Our main result states that such subgroups do not lie inside proper parabolic subgroups unless possibly when their connected component is a torus. This extends the earlier result of Testerman and Zalesski treating connected reductive subgroups.
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- 2020
45. The 2-parameter Green functions for 8-dimensional spin groups
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Malle, Gunter and Rotilio, Emil
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C15, 20C33, 20G40 - Abstract
The 2-parameter Green functions occur as a crucial ingredient in the character formula for Lusztig induction in finite reductive groups. Still, very little is known about these functions, in particular in the case of groups arsing from algebraic groups with disconnected centre. We collect some basic properties and then apply these, together with some explicit computations, to determine all 2-parameter Green functions for 8-dimensional spin groups in odd characteristic, whose centre is disconnected of order~4., Comment: minor corrections, some references added
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- 2020
46. Autoimmunity in Down’s syndrome via cytokines, CD4 T cells and CD11c+ B cells
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Malle, Louise, Patel, Roosheel S., Martin-Fernandez, Marta, Stewart, O Jay, Philippot, Quentin, Buta, Sofija, Richardson, Ashley, Barcessat, Vanessa, Taft, Justin, Bastard, Paul, Samuels, Julie, Mircher, Clotilde, Rebillat, Anne-Sophie, Maillebouis, Louise, Vilaire-Meunier, Marie, Tuballes, Kevin, Rosenberg, Brad R., Trachtman, Rebecca, Casanova, Jean-Laurent, Notarangelo, Luigi D., Gnjatic, Sacha, Bush, Douglas, and Bogunovic, Dusan
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- 2023
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47. A Conceptual Model for Engineering Educators in Rural Places: Critical Reflection and Engagement
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Malle R. Schilling and Jacob R. Grohs
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rural education ,k-12 ,conceptual model ,asset-based ,outreach ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Education (General) ,L7-991 - Abstract
Rural educational contexts often go under addressed in engineering education research and practice. Given the specific nuances associated with rural places and contexts, engineering education outreach should be better aligned with ongoing efforts to recognize and engage students’ assets in education. This paper introduces a conceptual model that proposes tenets, or considerations, for engineering engagement in rural places. The tenets include: understand self and context rooted in a place; seek to (re)contextualize curriculum; encourage students’ assets and other ways of knowing, and engage critically and hopefully. The tenets of this paper are grounded in literature from rural education, P-12 engineering education, asset-based education, and literature pertaining to the rural Appalachian context and spatial justice. Each tenet section presents some of this literature as well as questions for individual reflection to further engage with the tenets. The conceptual model presented in this provides a framework for ongoing reflection on the importance of place and how place can inform engineering education outreach and engagement. Though this paper focuses on rural contexts, the tenets used to organize the model and the associated reflection questions could prove useful to work in various contexts (e.g. suburban, urban). Ultimately, this paper encourages the recognition of how geographies impact communities and how to engage with place in P-12 engineering education settings.
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- 2024
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48. Decomposition matrices for groups of Lie type in non-defining characteristic
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Dudas, Olivier and Malle, Gunter
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Mathematics - Representation Theory ,20C20, 20C33 - Abstract
We determine approximations to the decomposition matrices for unipotent $\ell$-blocks of several series of finite reductive groups of classical and exceptional type over $\FF_q$ of low rank in non-defining good characteristic~$\ell$.
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- 2020
49. Cognitive Properties of Norm Representations
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Malle, Bertram F., Austerweil, Joseph Larry, Chi, Vivienne Bihe, Kenett, Yoed, Beck, Emorie D, Thapa, Stuti, and Allaham, Mowafak
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cognitive science - Abstract
Norms are central to social life. They help people select actions that benefit the community and facilitate behavior prediction and coordination. However, little is known about the cognitive properties of norms. Here we focus on norm activation, context specificity, and how those properties differ for the two major types of norms: prescriptions and prohibitions. In two studies, participants are exposed to a variety of contexts by way of scene images and either (a) freely generate norms that apply to the context or (b) decide whether each of a series of candidate norms applies to a given context. Across both studies, people showed high levels of context specificity and fast norm activation, and these properties were substantially stronger for prescriptions than for prohibitions.
- Published
- 2021
50. Low-dimensional representations of finite orthogonal groups
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Magaard, Kay and Malle, Gunter
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Mathematics - Representation Theory ,Mathematics - Group Theory ,20C33, 20D06, 20G40 - Abstract
We determine the smallest irreducible Brauer characters for finite quasi-simple orthogonal type groups in non-defining characteristic. Under some restrictions on the characteristic we also prove a gap result showing that the next larger irreducible Brauer characters have a degree roughly the square of those of the smallest non-trivial characters.
- Published
- 2019
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