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
Aaron Brown · 2024 · Wilmott
A decade ago, statistics from the 1990s and early 2000s appeared to confirm there had been a �Steroid Era� in baseball, but subsequent to that, evidence has mounted significantly in the opposite direction.
View details →DOI: 10.54946/wilm.12049 Negative / Null Result Report
Walter F. Kuentzel, Thomas A. Heberlein · 2010 · Tourism in Marine Environments
Research on retirement migration decisions has found uniformly that natural amenities and recreational opportunities are primary decision-making factors among those who move to high-amenity rural-based tourism destinations. Most of the…
View details →DOI: 10.3727/154427310x12682653194961 Negative / Null Result Report
Bill Cheuk Long Chan, Billy Lee · 2024 · Studia sportiva
Managing the balance of academic and athletic responsibilities at university is a serious challenge for student athletes. This phenomenological case study illuminates how one individual successfully managed his study-sport balance at…
View details →DOI: 10.5817/sts2023-2-6 Negative / Null Result ReportMedicine
Bieglecka, Kęszycka, Czerwińska et al. · 2026 · Nutrients
Patients with psoriasis, a non-contagious, chronic, systemic inflammatory skin disease, often suffer from carbohydrate metabolism disorders, which can exacerbate systemic inflammation. This randomized, double-blind, placebo-controlled…
View details →DOI: 10.3390/nu18121843 Negative / Null Result Report
Christi Lero · 2025 · Innovation in Aging
Abstract Health systems are challenged with how to best align treatment with patient values, particularly in the face of older adult patients and those with serious illness. As a result, tools have been developed to endeavor facilitation…
View details →DOI: 10.1093/geroni/igaf122.3340 Negative / Null Result Report
Deborah A Kahal, Brian Wharton, Christopher James et al. · 2021 · Open Forum Infectious Diseases
Abstract Background Nationally, younger adults and racial minorities have lower levels of influenza vaccination (influenza vaccination = vaccine) than non-Hispanic White adults. During the 2015-16 season, most vaccine decliners in our…
View details →DOI: 10.1093/ofid/ofab466.213 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
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 ReportOpen accessPhysics
Aishrila Mazumder, Laura Wolz, Zhaoting Chen et al. · 2025 · arXiv
We present the first results of the HI intensity mapping power spectrum analysis with the MeerKAT International GigaHertz Tiered Extragalactic Exploration (MIGHTEE) survey. We use data covering $\sim$4 square degrees in the COSMOS field using a frequency range 962.5 MHz to 1008.42 MHz, equivalent to HI emission in $0.4<z<0.48$. The data consists of 15 pointings with a total of 94.2 hours on-source. We verify the suitability of the MIGHTEE data for HI intensity mapping by testing for residual systematics across frequency, baselines and pointings. We also vary the window used for HI signal measu
Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Muhammad Zeeshan, Saima Masood, Saima Ashraf et al. · 2023 · arXiv
The objective of the current study was to assess the effect of dietary supplementations of mannan-oligosaccharide, live yeast, and a combination of these two additives on growth performance, histo-morphology of the rumen, and muscle morphometric attributes in buffalo calves. A total of twenty buffalo calves (average weight of 25 kg) having 3 months of age were distributed according to a complete randomized design. All animals were individually stalled in the shed and were fed ad-libitum. Experimental animals were divided into four groups for 67 days: Control group(without the inclusion of diet
Negative / Null Result ReportOpen accessComputer Science
Andru P. Twinanda, Didier Mutter, Jacques Marescaux et al. · 2016 · arXiv
The tool presence detection challenge at M2CAI 2016 consists of identifying the presence/absence of seven surgical tools in the images of cholecystectomy videos. Here, we propose to use deep architectures that are based on our previous work where we presented several architectures to perform multiple recognition tasks on laparoscopic videos. In this technical report, we present the tool presence detection results using two architectures: (1) a single-task architecture designed to perform solely the tool presence detection task and (2) a multi-task architecture designed to perform jointly phase
Negative / Null Result ReportOpen accessComputer Science
Antoni Ramos-Buades, Patricia Schmidt, Geraint Pratten et al. · 2020 · arXiv
The current paradigm for constructing waveforms from precessing compact binaries is to first construct a waveform in a non-inertial, co-precessing binary source frame followed by a time-dependent rotation to map back to the physical, inertial frame. A key insight in the construction of these models is that the co-precessing waveform can be effectively mapped to some equivalent aligned spin waveform. Secondly, the time-dependent rotation implicitly introduces $m$-mode mixing, necessitating an accurate description of higher-order modes in the co-precessing frame. We assess the efficacy of this m
Negative / Null Result Report
Mohamad Arief Rafsanjani · 2022 · AL-ISHLAH: Jurnal Pendidikan
This research aims to look into theories about teacher competency, educational background, and training, where the hypothesis claims that educational background and training involvement has a positive link with teacher competence. This is…
View details →DOI: 10.35445/alishlah.v14i3.1704 Negative / Null Result ReportOpen accessComputer Science
Dou Liu, Ying Long, Sophia Zuoqiu et al. · 2025 · arXiv
Creating high-quality clinical Chains-of-Thought (CoTs) is crucial for explainable medical Artificial Intelligence (AI) while constrained by data scarcity. Although Large Language Models (LLMs) can synthesize medical data, their clinical reliability remains unverified. This study evaluates the reliability of LLM-generated CoTs and investigates prompting strategies to enhance their quality. In a blinded comparative study, senior clinicians in Assisted Reproductive Technology (ART) evaluated CoTs generated via three distinct strategies: Zero-shot, Random Few-shot (using shallow examples), and Se
Negative / Null Result ReportOpen accessComputer Science
J. Rehacek, Z. Hradil, M. Dusek et al. · 1999 · arXiv
An experimental comparison of several operational phase concepts is presented. In particular, it is shown that statistically motivated evaluation of experimental data may lead to a significant improvement in phase fitting upon the conventional Noh, Fouge'res and Mandel procedure. The analysis is extended to the asymptotic limit of large intensities, where a strong evidence in favor of multi--dimensional estimation procedures has been found.
Negative / Null Result ReportOpen accessPhysics
Rebecca J. Smethurst, Karen L. Masters, Brooke D. Simmons et al. · 2021 · arXiv
The galaxy population is strongly bimodal in both colour and morphology, and the two measures correlate strongly, with most blue galaxies being late-types (spirals) and most early-types, typically ellipticals, being red. This observation has led to the use of colour as a convenient selection criteria to make samples which are then labelled by morphology. Such use of colour as a proxy for morphology results in necessarily impure and incomplete samples. In this paper, we make use of the morphological labels produced by Galaxy Zoo to measure how incomplete and impure such samples are, considering
Negative / Null Result ReportOpen accessPhysics
Mahiguhappriya Prakash, Susmita Das, Harinder P. Singh et al. · 2026 · arXiv
We present a new, calibrated $G$-band relationship between pulsation period $P$, Fourier parameter $φ_{31}$, and metallicity [Fe/H] for galactic RR Lyrae stars from the Gaia survey. A set of 72 fundamental mode RR Lyrae stars were identified for deriving the relation in the $G$-band, after visual examination of their light curves. Unlike recent large-scale calibrations, our relation prioritizes calibration purity by anchoring exclusively to a homogeneously analyzed sample of high-resolution spectroscopic metallicities from the literature. Our best fit relation is $\text{[Fe/H]} = (-6.93 \pm 0.
Negative / Null Result ReportOpen accessComputer Science
Antonious M. Girgis, Deepesh Data, Suhas Diggavi · 2021 · arXiv
We study privacy in a distributed learning framework, where clients collaboratively build a learning model iteratively through interactions with a server from whom we need privacy. Motivated by stochastic optimization and the federated learning (FL) paradigm, we focus on the case where a small fraction of data samples are randomly sub-sampled in each round to participate in the learning process, which also enables privacy amplification. To obtain even stronger local privacy guarantees, we study this in the shuffle privacy model, where each client randomizes its response using a local different
Negative / Null Result ReportOpen accessComputer Science
Zhijian Luo, Zihan Huang, Jiahui Tang et al. · 2022 · arXiv
At the age of big data, recommender systems have shown remarkable success as a key means of information filtering in our daily life. Recent years have witnessed the technical development of recommender systems, from perception learning to cognition reasoning which intuitively build the task of recommendation as the procedure of logical reasoning and have achieve significant improvement. However, the logical statement in reasoning implicitly admits irrelevance of ordering, even does not consider time information which plays an important role in many recommendation tasks. Furthermore, recommenda
Negative / Null Result ReportOpen accessComputer Science
Wu Ji · 2026 · arXiv
System prompts for AI coding agents increasingly employ motivational framing -- from neutral task descriptions to fear-driven threats -- yet no controlled study has examined whether such framing affects agent behavior. We present two studies investigating how trust-based versus fear-based motivation framing in system prompts influences AI agent debugging performance. In Study 1, we conducted a controlled manual experiment comparing a trust-framed methodology (NoPUA) against an unframed baseline across 9 debugging scenarios using Claude Sonnet 4. Trust-framed agents found 59% more hidden issues
Negative / Null Result ReportOpen accessComputer Science
Joshua Frankie Rayo, Vena Pearl Boñgolan · 2020 · arXiv
The Advanced Circulation (ADCIRC) and Simulating Nearshore Waves (SWAN) coupled model is modified to include a stochastic term in the shallow water equations that represents random external forces from debris carried by surge and short-term local scale atmospheric fluctuations. We added $α$-stable noise, uncorrelated in space and time, in the forcing terms of the coupled model. Inputs to the model are unstructured computational mesh derived from topography and bathymetry, land cover classification, tidal potential constituents and atmospheric forcing. The model simulated surge height of around
Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Zhengye Pan, Jianwei Zuo, Jiajia Luo · 2026 · arXiv
Background:Subject-specific finite element analysis accurately characterizes knee joint mechanics but is computationally expensive. Deep surrogate models provide a rapid alternative, yet their generalization across subjects under limited pose and load inputs remains unclear. It remains unclear whether the dominant source of prediction uncertainty arises from temporal history dependence or spatial propagation dependence. Methods:To disentangle these factors, we employed a shared MGN backbone with a fixed mesh topology. A dataset of running trials from nine subjects was constructed using an Open
Negative / Null Result ReportOpen accessComputer Science
Mingjian He, Robert Malaney · 2022 · arXiv
Hybrid entanglement between discrete-variable (DV) and continuous-variable (CV) quantum systems is an essential resource for heterogeneous quantum networks. Our previous work showed that in lossy channels the teleportation of DV qubits, via CV-entangled states, can be significantly improved by a new protocol defined by a modified Bell state measurement at the sender. This work explores whether a new, similarly modified, CV-based teleportation protocol can lead to improvement in the transfer of hybrid entangled states. To set the scene, we first determine the performance of such a modified prot
Negative / Null Result ReportOpen accessPhysics
Zheng Zhang, Jonathan C. Pober, Wenyang Li et al. · 2020 · arXiv
Precise instrumental calibration is of crucial importance to 21-cm cosmology experiments. The Murchison Widefield Array's (MWA) Phase II compact configuration offers us opportunities for both redundant calibration and sky-based calibration algorithms; using the two in tandem is a potential approach to mitigate calibration errors caused by inaccurate sky models. The MWA Epoch of Reionization (EoR) experiment targets three patches of the sky (dubbed EoR0, EoR1, and EoR2) with deep observations. Previous work in \cite{Li_2018} and \cite{Wenyang_2019} studied the effect of tandem calibration on th
Negative / Null Result ReportOpen accessComputer Science
I. Sahin · 2008 · arXiv
We investigate the potential of $γγ$ collisions to probe scalar unparticle couplings via top-antitop quark pair production. We find 95% confidence level limits on the unparticle couplings with an integrated luminosity of $500 fb^{-1}$ and $\sqrt{s}=1$ TeV energy. We investigate the effect of top quark spin polarization on the unparticle couplings. It is shown that spin polarization of the top quark leads to a significant improvement in the sensitivity limits.
Negative / Null Result ReportOpen accessComputer Science
M. C. Gonzalez-Garcia, S. F. Novaes · 1996 · arXiv
We investigate the effects induced by excited leptons at the one-loop level in the observables measured on the $Z$ peak at LEP. Using a general effective Lagrangian approach to describe the couplings of the excited leptons, we compute their contributions to both oblique parameters and $Z$ partial widths. Our results show that the new effects are comparable to the present experimental sensitivity, but they do not lead to a significant improvement on the available constraints on the couplings and masses of these states.
Negative / Null Result ReportOpen accessPhysics
Karim Zantout, Steffen Backes, Aleksandar Razpopov et al. · 2022 · arXiv
In this work we present a multi-orbital form of the Two-Particle Self-Consistent approach (TPSC), here the effective local and static irreducible interaction vertices are determined by means of the Dynamical Mean-Field Theory (DMFT). This approach replaces the approximate ansatz equations for the double occupations $\langle n^{}_{α,σ}n^{}_{β,σ'}\rangle$ by sampling them directly for the same model using DMFT. Compared to the usual Hartree-Fock like ansatz, this leads to more accurate local vertices in the weakly correlated regime, and provides access to stronger correlated systems that were pr
Negative / Null Result ReportOpen accessComputer Science
Nima Akhlaghi, Ananya Dhawan, Amir A. Khan et al. · 2018 · arXiv
Objective: The objectives of this paper are to determine the optimal location for ultrasound transducer placement on the anterior forearm for imaging maximum muscle deformations during different hand motions and to investigate the effect of using a sparse set of ultrasound scanlines for motion classification for ultrasound-based muscle computer interfaces (MCIs). Methods: The optimal placement of the ultrasound transducer along the forearm is identified using freehand 3D reconstructions of the muscle thickness during rest and motion completion. From the ultrasound images acquired from the opti
Negative / Null Result ReportOpen accessPhysics
V. Reimer, M. R. Wegewijs · 2018 · arXiv
We study the reduced time-evolution of open quantum systems by combining quantum-information and statistical field theory. Inspired by prior work [EPL 102, 60001 (2013) and Phys. Rev. Lett. 111, 050402 (2013)] we establish the explicit structure guaranteeing the complete positivity (CP) and trace-preservation (TP) of the real-time evolution expansion in terms of the microscopic system-environment coupling. This reveals a fundamental two-stage structure of the coupling expansion: Whereas the first stage defines the dissipative timescales of the system --before having integrated out the environm
