Negative / Null Result ReportOpen accessMathematics
Yemon Choi · 2015 · arXiv
We show that, given a compact Hausdorff space $Ω$, there is a compact group ${\mathbb G}$ and a homeomorphic embedding of $Ω$ into ${\mathbb G}$, such that the restriction map ${\rm A}({\mathbb G})\to C(Ω)$ is a complete quotient map of operator spaces. In particular, this shows that there exist compact groups which contain infinite cb-Helson subsets, answering a question raised in [Choi--Samei, Proc. AMS 2013; cf. http://arxiv.org/abs/1104.2953]. A negative result from the same paper is also improved.
Negative / Null Result ReportOpen accessComputer Science
Chelsea Murray, James U. Allingham, Javier Antorán et al. · 2021 · arXiv
Farquhar et al. [2021] show that correcting for active learning bias with underparameterised models leads to improved downstream performance. For overparameterised models such as NNs, however, correction leads either to decreased or unchanged performance. They suggest that this is due to an "overfitting bias" which offsets the active learning bias. We show that depth uncertainty networks operate in a low overfitting regime, much like underparameterised models. They should therefore see an increase in performance with bias correction. Surprisingly, they do not. We propose that this negative res
Negative / Null Result ReportOpen accessComputer Science
A. Rubbia, P. Sala · 2002 · arXiv
The possibility to improve the CERN to Gran Sasso neutrino beam performances for theta_{13} searches is investigated. We show that by an appropriate optimization of the target and focusing optics of the present CNGS design, we can increase the flux of low energy neutrinos by about a factor 5 compared to the current tau optimized focalisation. With the ICARUS 2.35 kton detector at LNGS and in case of negative result, this would allow to improve the limit to sin^22 theta_{13} by an order of magnitude better than the current limit of CHOOZ at Delta m^2 approximately 3 times 10^{-3} eV^2 within 5
Negative / Null Result ReportOpen accessComputer Science
Calvin McCarter, Nicholas Dronen · 2022 · arXiv
Fast approximations to matrix multiplication have the potential to dramatically reduce the cost of neural network inference. Recent work on approximate matrix multiplication proposed to replace costly multiplications with table-lookups by fitting a fast hash function from training data. In this work, we propose improvements to this previous work, targeted to the deep learning inference setting, where one has access to both training data and fixed (already learned) model weight matrices. We further propose a fine-tuning procedure for accelerating entire neural networks while minimizing loss in
Negative / Null Result ReportOpen accessComputer Science
Aldar C-F. Chan · 2007 · arXiv
Any secured system can be modeled as a capability-based access control system in which each user is given a set of secret keys of the resources he is granted access to. In some large systems with resource-constrained devices, such as sensor networks and RFID systems, the design is sensitive to memory or key storage cost. With a goal to minimize the maximum users' key storage, key compression based on key linking, that is, deriving one key from another without compromising security, is studied. A lower bound on key storage needed for a general access structure with key derivation is derived. Th
Negative / Null Result Report
Erin Waggoner, null null, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
Rapid Response Teams became a hospital standard in 2004 after a campaign by the Institute of Healthcare Improvement. The intention was to reduce hospital morbidity and mortality by bringing the resources to the bedside that match the…
View details →DOI: 10.58809/lahg2918 Negative / Null Result Report
Shyla Davison, null null, null null et al. · 2022 · John Heinrichs Scholarly & Creative Activities Day
Over the past five years, there has been many improvements to the Sternberg Museum of Natural History that have resulted in a renovated fossil preparation lab and a new database for specimen data storage. To find ways to improve our…
View details →DOI: 10.58809/gqnc8856 Negative / Null Result Report
Vanessa Leavitt, null null, null null et al. · 2017 · Journal of Applied and Educational Research
Achieving a high degree of mastery and success on an instrument is often a goal of band students, as well as that of their parents, band directors, and lesson teachers. The ability to practice consistently and to make lasting improvements…
View details →DOI: 10.58809/jymi9090 Negative / Null Result Report
Julie Flynn, null null, null null et al. · 2017 · Journal of Applied and Educational Research
Teachers and students nationwide are struggling to address the disparity in academic achievement between students in urban, socioeconomically underprivileged and racially segregated school districts, and their more affluent, white,…
View details →DOI: 10.58809/izdq4092 Negative / Null Result Report
Mick Harris, null null, null null et al. · 2022 · John Heinrichs Scholarly & Creative Activities Day
Treatments for mild Traumatic Brain Injuries (mTBI’s) and Persistent Post-Concussion Syndrome (PPCS) have focused on alleviating symptoms and disabilities. Researchers have seen improvements with patients who have had brain injuries due to…
View details →DOI: 10.58809/vmvv1504 Negative / Null Result ReportOpen accessPhysics
M. Gillon, B. -O. Demory, C. Lovis et al. · 2017 · arXiv
Short-period super-Earths and Neptunes are now known to be very frequent around solar-type stars. Improving our understanding of these mysterious planets requires the detection of a significant sample of objects suitable for detailed characterization. Searching for the transits of the low-mass planets detected by Doppler surveys is a straightforward way to achieve this goal. Indeed, Doppler surveys target the most nearby main-sequence stars, they regularly detect close-in low-mass planets with significant transit probability, and their radial velocity data constrain strongly the ephemeris of p
Negative / Null Result ReportOpen accessComputer Science
Andrew Fowlie · 2014 · arXiv
The absence of supersymmetry or other new physics at the Large Hadron Collider (LHC) has lead many to question naturalness arguments. With Bayesian statistics, we argue that natural models are most probable and that naturalness is not merely an aesthetic principle. We calculate a probabilistic measure of naturalness, the Bayesian evidence, for the Standard Model (SM) with and without quadratic divergences, confirming that the SM with quadratic divergences is improbable. We calculate the Bayesian evidence for the Constrained Minimal Supersymmetric Standard Model (CMSSM) with naturalness priors
Negative / Null Result Report
Misa Fujio · 2010 · Linguistic Proceedings Series
This study investigated the longitudinal improvement in fluency of three Japanese participants who studied at a graduate school in the UK. In addition to quantitative analysis of videotaped conversations focusing on core components of…
View details →DOI: 10.36505/exling-2010/03/0013/000133 Negative / Null Result Report
David Yanni, Nupur Krishnan, Rouslan Kotchetkov · 2026 · Cancers
Introduction: Front-line therapy with Azacitidine (AZA) + Venetoclax (Ven) improved overall survival (OS) and remissions in acute myeloid leukemia (AML) patients ineligible for standard induction. Less is known about the outcome of AML…
View details →DOI: 10.3390/cancers18050841 Negative / Null Result Report
Il‐Young Kim, Scott Schutzler, Nicolaas Deutz et al. · 2014 · The FASEB Journal
A reduction in nitric oxide (NO) bioavailability that impairs peripheral blood flow regulation is a natural consequence of aging. Therefore , we investigated the effect of ingestion of citrulline, the precursor of arginine, on de novo…
View details →DOI: 10.1096/fasebj.28.1_supplement.698.6 Negative / Null Result Report
Nadine Haase, Stefan Hupfer, Michaela Golic et al. · 2013 · Hypertension
We investigated whether or not Relaxin ameliorates the hypertension induced damage to heart and kidney. We used double transgenic rats harboring both human renin and angiotensinogen genes (dTGRs). These rats develop moderately severe…
View details →DOI: 10.1161/hyp.62.suppl_1.a458 Negative / Null Result Report
Tyee Kenneth Fellows, Sabina Freiman, Vladimir Ljubojevic et al. · 2020 · Canadian Medical Education Journal
Background: With the increasing awareness and action amongst stakeholders in addressing the concerning rise of unmatched Canadian Medical Graduates (CMGs), little is known from those who go unmatched. We use our unmatched experience to…
View details →DOI: 10.36834/cmej.69322 Negative / Null Result Report
Janneke I. Loomans, Eva Stokhuijzen, Marjolein Peters et al. · 2018 · Journal of Clinical and Translational Research
Background: The half-life and mean residence time (MRT) of infused recombinant factor VIII (FVIII) concentrate are associated with pre-infusion levels of von Willebrand factor (VWF) in severely affected hemophilia A patients. It is…
View details →DOI: 10.18053/jctres.03.2017s2.003 Negative / Null Result Report
Karen E Joynt, E. John Orav, Ashish K Jha · 2014 · Circulation: Cardiovascular Quality and Outcomes
Background: Public reporting may improve provider performance, although evidence for its impact has been mixed. In the U.S., public reporting of hospital performance became widespread in late 2004. Led by the Centers for Medicare and…
View details →DOI: 10.1161/circoutcomes.7.suppl_1.20 Negative / Null Result Report
Mweete D. Nglazi, John E. Ataguba · 2024 · PLOS Global Public Health
Overweight and obesity in adult women contribute to deaths and disability from non-communicable diseases (NCDs) and obesity-related health problems in their offspring. Globally, overweight and obesity prevalence among women of childbearing…
View details →DOI: 10.1371/journal.pgph.0003719 Negative / Null Result Report
Michael P Thompson, Ilana Graetz, Naleef Fareed et al. · 2017 · Circulation: Cardiovascular Quality and Outcomes
Objective: With the goal of improving healthcare quality, Medicare has implemented a series of pay-for-performance initiatives and allocated substantial financial resources to promote meaningful use of electronic health records (EHRs). The…
View details →DOI: 10.1161/circoutcomes.10.suppl_3.028 Negative / Null Result Report
Sally Caine, Mariam Alaverdashvili, Frederick Colbourne et al. · 2024 · PLOS ONE
Malnutrition after stroke may lessen the beneficial effects of rehabilitation on motor recovery through influences on both brain and skeletal muscle. Enriched rehabilitation (ER), a combination of environmental enrichment and forelimb…
View details →DOI: 10.1371/journal.pone.0302008 Negative / Null Result Report
Abigail Silva, Arielle Guzman, Charlotte Picard et al. · 2020 · Cancer Epidemiology, Biomarkers & Prevention
Abstract Background: Through its various provisions, the Patient Protection and Affordable Care Act (ACA) has the potential to increase access to cancer care, particularly among the most vulnerable, and reduce disparities in cancer care…
View details →DOI: 10.1158/1538-7755.disp18-b076 Negative / Null Result Report
Siobhan Dickinson, Maryam Naghsh‐Nejad, Kees Van Gool et al. · 2026 · Australian Economic Review
ABSTRACT Research Question/Issue This study examines the impact of the Chronic Disease Dental Scheme (CDDS), introduced in 2007 to provide subsidised dental care for people with chronic conditions. Specifically, it asks whether the CDDS…
View details →DOI: 10.1111/1467-8462.70058 Negative / Null Result Report
Hugh Adler, Kwong Tsang, Michael Abouyannis et al. · 2024 · Journal of Healthcare Simulation
Introduction: The Centre for Snakebite Research & Interventions at the Liverpool School of Tropical Medicine (LSTM) houses >150 venomous snakes. This includes the black mamba (Dendroaspis polylepis) which can cause life-threatening…
View details →DOI: 10.54531/zliz6918 Negative / Null Result Report
K Hirono, K Tsuboi, H Nakaoka et al. · 2025 · European Heart Journal
Abstract Background Dilated cardiomyopathy (DCM) is a progressive myocardial disorder with significant morbidity in children. Although pathogenic gene variants are detected in approximately 30–40% of DCM cases, the impact of sarcomere gene…
View details →DOI: 10.1093/eurheartj/ehaf784.2664 Negative / Null Result Report
Yanbin Shen, Sung Woo Kim, Hans H. Stein et al. · 2025 · Frontiers in Animal Science
Three experiments evaluated the effects of a novel milk ingredient blend (FXP) in phase 1 and 2 nursery pig diets on growth performance, diarrhea score, and survival. In Experiment 1, pigs were fed a 3-phase nursery regimen, with phases 1,…
View details →DOI: 10.3389/fanim.2025.1648283 Negative / Null Result Report
Nativ Henkin, Ifat Karilker, Sergio L. Kobal et al. · 2023 · Journal of Clinical Medicine
Echocardiographic stress tests are often used to evaluate patients who complain of chest pain. However, some patients fail to reach the target heart rate required for the test to be conclusive (usually defined as 85% of the predicted…
View details →DOI: 10.3390/jcm12144832 Negative / Null Result ReportOpen accessComputer Science
M. Burghoff, A. Schnabel, G. Ban et al. · 2011 · arXiv
A permanent electric dipole moment of fundamental spin-1/2 particles violates both parity (P) and time re- versal (T) symmetry, and hence, also charge-parity (CP) symmetry since there is no sign of CPT-violation. The search for a neutron electric dipole moment (nEDM) probes CP violation within and beyond the Stan- dard Model. The experiment, set up at the Paul Scherrer Institute (PSI), an improved, upgraded version of the apparatus which provided the current best experimental limit, dn < 2.9E-26 ecm (90% C.L.), by the RAL/Sussex/ILL collaboration: Baker et al., Phys. Rev. Lett. 97, 131801 (200
Negative / Null Result Report
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…
View details →DOI: 10.5713/ab.24.0860 