Negative / Null Result ReportOpen accessComputer Science
Max Koster, Jude Kukla · 2024 · arXiv
In recent years, continual learning, a prediction setting in which the problem environment may evolve over time, has become an increasingly popular research field due to the framework's gearing towards complex, non-stationary objectives. Learning such objectives requires plasticity, or the ability of a neural network to adapt its predictions to a different task. Recent findings indicate that plasticity loss on new tasks is highly related to loss landscape sharpness in non-stationary RL frameworks. We explore the usage of sharpness regularization techniques, which seek out smooth minima and hav
View details →Negative / Null Result ReportOpen accessPhysics
Philip J. Grylls, F. Shankar, C. Conselice · 2020 · arXiv
There exist discrepancies in measurements of the number and evolution of galaxy pairs. The pair fraction appears to be sensitive to both the criteria used to select pair fraction and the methods used to analyze survey data. This paper explores the connection between stellar mass estimation and the pair fraction of galaxies making use of STEEL, the Statistical sEmi-Emprical modeL. Previous results have found the pair fraction is sensitive to choices made when selecting what qualifies as a pair, for example luminosity or stellar mass selections. We find that different estimations of stellar mass
View details →Negative / Null Result ReportOpen accessPhysics
M. Tamburini, F. Pegoraro, A. Di Piazza et al. · 2010 · arXiv
Radiation reaction (RR) effects on the acceleration of a thin plasma foil by a superintense laser pulse in the radiation pressure dominated regime are investigated theoretically. A simple suitable approximation of the Landau-Lifshitz equation for the RR force and a novel leapfrog pusher for its inclusion in particle-in-cell simulations are provided. Simulations for both linear and circular polarization of the laser pulse are performed and compared. It is found that at intensities exceeding $10^{23} \Wcm$ the radiation reaction force strongly affects the dynamics for a linearly polarized laser
View details →Negative / Null Result ReportOpen accessComputer Science
Ohad Inbar, Joachim Meyer · 2022 · arXiv
The 'intuitive' trust people feel when encountering robots in public spaces is a key determinant of their willingness to cooperate with these robots. We conducted four experiments to study this topic in the context of peacekeeping robots. Participants viewed scenarios, presented as static images or animations, involving a robot or a human guard performing an access-control task. The guards interacted more or less politely with younger and older male and female people. Our results show strong effects of the guard's politeness. Age and sex of the people interacting with the guard had no signific
View details →Negative / Null Result ReportOpen accessPhysics
Anuj Chaudhri, Jennifer R. Lukes · 2012 · arXiv
Homogeneous nucleation of a vapor bubble from a bulk metastable phase is studied here for the first time using the multibody dissipative particle dynamics model. The van der Waals equation of state is used to define a conservative force that describes the model fluid used in this study. Additional computational tools were developed to help visualize the vapor bubble formed in the system. Continuum thermodynamic ideas are used to help identify the bubble interface and separate particles that constitute the vapor bubble and bulk liquid regions respectively. Using this idea, the density variation
View details →Negative / Null Result ReportOpen accessEngineering
Ezra Tampubolon, Haris Ceribasic, Holger Boche · 2020 · arXiv
Congestion game is a widely used model for modern networked applications. A central issue in such applications is that the selfish behavior of the participants may result in resource overloading and negative externalities for the system participants. In this work, we propose a pricing mechanism that guarantees the sub-linear increase of the time-cumulative violation of the resource load constraints. The feature of our method is that it is resource-centric in the sense that it depends on the congestion state of the resources and not on specific characteristics of the system participants. This f
View details →Negative / Null Result ReportOpen accessPhysics
S. S. Tie, C. S. Kochanek · 2017 · arXiv
Quasar microlensing analyses implicitly generate a model of the variability of the source quasar. The implied source variability may be unrealistic yet its likelihood is generally not evaluated. We used the damped random walk (DRW) model for quasar variability to evaluate the likelihood of the source variability and applied the revised algorithm to a microlensing analysis of the lensed quasar RX J1131-1231. We compared the estimates of the source quasar disk and average lens galaxy stellar mass with and without applying the DRW likelihoods for the source variability model and found no signific
View details →Negative / Null Result ReportOpen accessComputer Science
Mathieu Melich, Jacques Dupont-Roc, Philippe Jacquier · 2007 · arXiv
The anisotropic effect of a hcp 4He solid matrix on cesium atoms has been proposed as a tool to reveal the parity violating anapole moment of its nucleus. It should also result in splitting the D2 optical excitation line in a way depending on the light polarization. An experimental investigation has been set up using oriented hcp helium crystals in which cesium metal grains are embedded. Atoms are created by laser sputtering from this grains. Optical absorption spectra of the D2 line have been recorded in the temperature range of 1.0 to 1.4 K at liquid/solid coexistence pressure by monitoring
View details →Negative / Null Result ReportOpen accessComputer Science
Morris de Haan, Philipp Hager · 2024 · arXiv
Despite the popularity of the two-tower model for unbiased learning to rank (ULTR) tasks, recent work suggests that it suffers from a major limitation that could lead to its collapse in industry applications: the problem of logging policy confounding. Several potential solutions have even been proposed; however, the evaluation of these methods was mostly conducted using semi-synthetic simulation experiments. This paper bridges the gap between theory and practice by investigating the confounding problem on the largest real-world dataset, Baidu-ULTR. Our main contributions are threefold: 1) we s
View details →Negative / Null Result ReportOpen accessComputer Science
Nils Dycke, Iryna Gurevych · 2025 · arXiv
Large Language Models (LLMs) have great potential to accelerate and support scholarly peer review and are increasingly used as fully automatic review generators (ARGs). However, potential biases and systematic errors may pose significant risks to scientific integrity; understanding the specific capabilities and limitations of state-of-the-art ARGs is essential. We focus on a core reviewing skill that underpins high-quality peer review: detecting faulty research logic. This involves evaluating the internal consistency between a paper's results, interpretations, and claims. We present a fully au
View details →Negative / Null Result ReportOpen accessComputer Science
Bryan Y. Siow · 2025 · arXiv
This paper describes a practical approach of using supervised machine learning (ML) models to assist safety investigators to classify aviation occurrences into either incident or serious incident categories. Our implementation currently deployed as a ML web application is trained on a labelled dataset derived from publicly available aviation investigation reports. A selection of five supervised learning models (Support Vector Machine, Logistic Regression, Random Forest Classifier, XGBoost and K-Nearest Neighbors) were evaluated. This paper showed the best performing ML algorithm was the Random
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Joonpyo Oh, Dae Kyum Yoo, Si Woo Jeong et al. · 2025 · Animal Bioscience
Objective: The effects of heat-treated soybean meal (SBM) and citric acid (HCSBM) on the growth performance, rumen fermentation, blood metabolites, nutrient digestibility, and nitrogen (N) utilization were evaluated in growing Hanwoo…
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Kaixun Hu, Yajing Huang, Huisheng Ai et al. · 2015 · Blood
Abstract Acute myeloid leukemia (AML) of older patients is an aggressive malignancy. Despite decitabine is performed some clinic trials in these patients, however there is little data on efficacy and is more controversial on it. Recent…
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Yousuke Nakai, Hiroyuki Isayama, Kazunaga Ishigaki et al. · 2016 · Journal of Clinical Oncology
293 Background: We previously reported the introduction of S-1 improved overall survival (OS) in advanced pancreatic cancer (PC), but in a pooled analysis of 3 RCTs, a combination of gemcitabine and S-1 (GS) improved OS in locally advanced…
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John G. Skedros, Tanner R. Henrie, Chad S. Mears · 2014 · Case Reports in Orthopedics
Although interposition soft-tissue (biologic) resurfacing of the glenoid with humeral hemiarthroplasty has been considered an option for end-stage glenohumeral arthritis, the results of this procedure are highly unsatisfactory in patients…
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Zeeshan M. Akhtar, Emily R. Hunt, Brooks N. Platt et al. · 2021 · The Journal of Hip Surgery
Abstract Doxycycline has been shown to reduce fibroblast activity in the treatment of multiple pathologies, and was utilized as part of the postoperative medication protocol to help prevent adhesions from developing after hip arthroscopy.…
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Abdullahi Abubakar, Boniface Denis Umoh · 2023 · Caleb International Journal of Development Studies
Many employees are merely holding on to their current jobs for lack of alternatives. Such staff members are no longer deriving satisfaction from their current jobs. Lack of satisfaction impinges on workers productivity and attitude to work…
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B Gu, J Chetwood, A Pudipeddi et al. · 2026 · Journal of Crohn’s and Colitis
Abstract Background Emerging evidence suggests early initiation of advanced therapies (AT) may improve outcomes, but optimal timing remains unclear. We aimed to assess the impact of AT timing on persistence. Methods We interrogated the…
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Taíse Toniazzo, Rafael de Almeida Azevedo, Tamires Nunes Oliveira et al. · 2025 · International Journal of Sport Nutrition and Exercise Metabolism
Sports supplements composed of carbohydrate and protein are widely used by endurance athletes and recreational practitioners, mostly aimed at improving performance. This study investigated the effect of a novel carbohydrate + protein honey…
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Ching-Tai Huang, Avijit Dutta, Tse-Ching Chen et al. · 2016 · The Journal of Immunology
Abstract The host immune system responds to influenza virus infection for eradication of the virus but the immune response associated inflammation causes tissue injury and damage to the host as well. Severe influenza with morbidity and…
View details →Negative / Null Result ReportMedicine
Balcı, Saltık, Aktemur et al. · 2026 · Life (Basel, Switzerland)
The migrating myoelectric complex (MMC) is the electrical basis of fasting small intestinal motility. Although oxytocin (OT) regulates gastrointestinal functions through oxytocin receptors (OTRs), its effect on jejunal MMC activity during…
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Samar Mahmoud Elbahy, Ola Galal Ali, Sara Soliman Ali et al. · 2024 · Egyptian Pediatric Association Gazette
Abstract Background Among preterm babies, patent ductus arteriosus (PDA) is a prevalent condition, and hemodynamically significant patent ductus arteriosus (hsPDA) constitutes an important problem that impacts their outcome. There has…
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Josef Yayan · 2026 · Life
Background: Sedative medications are widely used in intensive care units (ICUs) to facilitate patient management; however, their association with clinical outcomes remains incompletely understood. This study aimed to evaluate the…
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· 2022 · Biomedical Letters
Obesity has become a major health concern in the past few decades. It is quite threatening that it is now a common problem among our adults, especially girls. The possible reason for this alarming increase is might acid-alkaline imbalance…
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Brona Dinneen, Marcus Kenyon, Finbar O'Shea · 2024 · Rheumatology
Abstract Background/Aims Axial spondyloarthritis is a chronic inflammatory condition primarily impacting the spine and sacroiliac joints. In addition to spinal inflammation and peripheral symptoms, it frequently presents with…
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Ying Zhu, Ruibo Miao · 2026 · Medicine
Nicotine metabolite ratio (NMR) is a biomarker for the rate of nicotine metabolism and may be linked to depression, but evidence from large, representative populations is scarce. The role of smoking status as a potential effect modifier of…
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Georgi M. Sarov · 2016 · Journal of Biomedical and Clinical Research
Summary It is well known that some psychological features of adolescents are positively associated with alcohol drinking but less attention is paid to the psychological features of their significant others. The aim of the study was to…
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Fishella Aprista Rahmanti, Willy Sandhika, Lusiani Tjandra · 2025 · Folia Medica Indonesiana
Residual Cancer Burden (RCB) is a validated scoring system that quantifies the amount of tumour remaining after neoadjuvant chemotherapy (NAC) for breast cancer, providing prognostic information beyond binary outcomes, such as pathologic…
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David Camacho, Denise Burnette, Maria P Aranda et al. · 2019 · Innovation in Aging
Abstract Loneliness and pain are significant public health problems in later life, yet limited research has examined how these factors interact among racially diverse older adults. Guided by the Biopsychosocial Model of Pain, we used data…
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Arni Gershman, Rivka Farkash, Amjad Abu-Salman et al. · 2025 · Journal of Clinical Medicine
Background: Atrial fibrillation (AF) is a common tachyarrhythmia associated with increased morbidity. AF frequently occurs alongside mitral regurgitation (MR). Although the impact of MR severity on AF is well proven, its effect on AF…
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