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19,820 real negative results, null findings, and replication failures · Negative / Null Result Report. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessComputer Science

Metabook: A Mobile-to-Headset Pipeline for 3D Story Book Creation in Augmented Reality

Yibo Wang, Yuanyuan Mao, Lik-Hang Lee et al. · 2024 · arXiv

The AR 3D book has shown significant potential in enhancing students' learning outcomes. However, the creation process of 3D books requires a significant investment of time, effort, and specialized skills. Thus, in this paper, we first conduct a three-day workshop investigating how AI can support the automated creation of 3D books. Informed by the design insights derived from the workshop, we developed Metabook, a system that enables even novice users to create 3D books from text automatically. To our knowledge, Metabook is the first system to offer end-to-end 3D book generation. A follow-up s

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Negative / Null Result ReportOpen accessComputer Science

Acceleration of particles and shells by Reissner-Nordström naked singularities

Mandar Patil, Pankaj S. Joshi, Masashi Kimura et al. · 2011 · arXiv

We explore the Reissner-Nordström naked singularities with a charge $Q$ larger than its mass $M$ from the perspective of the particle acceleration. We first consider a collision between two test particles following the radial geodesics in the Reissner-Nordström naked singular geometry. An initially radially ingoing particle turns back due to the repulsive effect of gravity in the vicinity of naked singularity. Such a particle then collides with an another radially ingoing particle. We show that the center of mass energy of collision taking place at $r \approx M$ is unbound, in the limit where

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Negative / Null Result ReportOpen accessComputer Science

An Eye on Clinical BERT: Investigating Language Model Generalization for Diabetic Eye Disease Phenotyping

Keith Harrigian, Tina Tang, Anthony Gonzales et al. · 2023 · arXiv

Diabetic eye disease is a major cause of blindness worldwide. The ability to monitor relevant clinical trajectories and detect lapses in care is critical to managing the disease and preventing blindness. Alas, much of the information necessary to support these goals is found only in the free text of the electronic medical record. To fill this information gap, we introduce a system for extracting evidence from clinical text of 19 clinical concepts related to diabetic eye disease and inferring relevant attributes for each. In developing this ophthalmology phenotyping system, we are also afforded

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Negative / Null Result ReportOpen accessComputer Science

RECAP: Regression Evaluation for Continual Adaptation of Prompts

Harsh Deshpande, Kushal Chawla, Sangwoo Cho et al. · 2026 · arXiv

Production agentic systems routinely face evolving constraints and must comply from the very next interaction. Scenarios like a tool-call notification changing a compliance threshold or a policy update adding disclosure requirements fit this criteria, having close to no room for errors in production. This proactive adaptation setting is common in deployment, but absent from current benchmarks, which assume either static constraint sets or reactive protocols with evaluation feedback. We introduce RECAP, a benchmark that measures continual-learning phenomena (forgetting, regression, forward tran

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Negative / Null Result ReportOpen accessPhysics

Reconstructing the cosmic Horseshoe gravitational lens using the singular perturbative approach

C. Alard · 2016 · arXiv

The cosmic horseshoe gravitational lens is analyzed using the perturbative approach. The two first order perturbative fields are expanded in Fourier series. The source is reconstructed using a fine adaptive grid. The expansion of the fields at order 2 produces a higher value of the chi-square. Expanding at order 3 provides a very significant improvement, while order 4 does not bring a significant improvement over order 3. The presence of the order 3 terms is not a consequence of limiting the perturbative expansion to the first order. The amplitude and signs of the third order terms are recover

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Negative / Null Result Report

Human therapists outperform AI therapists in delivering CBT

Valerie A. Canady · 2025 · Mental Health Weekly

An AI therapist cannot replicate the nuanced empathy and therapeutic alliance of human therapists when delivering cognitive behavioral therapy (CBT), concluded researchers of a new study presented during the American Psychiatric…

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Negative / Null Result Report

Abstract 13428: The Long-term Therapy With Low-dose Aspirin Did Not Reduce Cardiovascular Events in Patients With Type 2 Diabetes in Primary Prevention Setting: 10-year Follow-up of a Randomized Controlled Trial

Yoshihiko Saito, Sadanori Okada, Hisao Ogawa et al. · 2016 · Circulation

Introduction: It takes long time to conclude efficacy and safety of an intervention on primary prevention of cardiovascular events. Up to date, there is no study to investigate the effect of the low-dose aspirin therapy on primary…

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Negative / Null Result Report

(Un)Sustainable Development: Do Democracies Outperform Autocracies?

Leonel Prieto, Arman Canatay, Muhammad R. Amin · 2025 · Sustainable Development

ABSTRACT Political regimes significantly determine the ability of nations to develop in one way or another. The current crisis of democracy has prompted the following question: to what degree does democracy deliver? To answer this…

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Negative / Null Result ReportOpen accessPhysics

Oligopeptides' frequencies in the classification of proteins' primary structures

P. Sirabella, A. Giuliani, A. Colosimo · 1998 · arXiv

This paper reports about an approach to the classification of proteins' primary structures taking advantage of the Self Organizing Maps algorithm and of a numerical coding of the aminoacids based upon their physico-chemical properties. Hydrophobicity, volume, surface area, hydrophilicity, bulkiness, refractivity and polarity were subjected to a Principal Component Analysis and the first two principal components, explaining 84.8 % of the total observed variability, were used to cluster the aminoacids into 4 or 5 classes through a k-means algorithm. This leads to an economical representation of

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Negative / Null Result ReportOpen accessPhysics

Doping and Defect-Induced Germanene: A Superior Media for Sensing H2S, SO2, and CO2 gas molecules

Md Monirojjaman Monshi, Sadegh Mehdi Aghaei, Irene Calizo · 2017 · arXiv

First-principles calculations based on density functional theory (DFT) have been employed to investigate the structural, electronic, and gas-sensing properties of pure, defected, and doped germanene nanosheets. Our calculations have revealed that while a pristine germanene nanosheet adsorbs CO2 weakly, H2S moderately, and SO2 strongly, the introduction of vacancy defects increases the sensitivity significantly which is promising for future gas-sensing applications.Mulliken population analysis imparts that an appreciable amount of charge transfer occurs between gas molecules and a germanene nan

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Negative / Null Result ReportOpen accessComputer Science

Diving Deep into Context-Aware Neural Machine Translation

Jingjing Huo, Christian Herold, Yingbo Gao et al. · 2020 · arXiv

Context-aware neural machine translation (NMT) is a promising direction to improve the translation quality by making use of the additional context, e.g., document-level translation, or having meta-information. Although there exist various architectures and analyses, the effectiveness of different context-aware NMT models is not well explored yet. This paper analyzes the performance of document-level NMT models on four diverse domains with a varied amount of parallel document-level bilingual data. We conduct a comprehensive set of experiments to investigate the impact of document-level NMT. We

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Negative / Null Result ReportOpen accessComputer Science

NLP Techniques for Water Quality Analysis in Social Media Content

Muhammad Asif Ayub, Khubaib Ahmad, Kashif Ahmad et al. · 2021 · arXiv

This paper presents our contributions to the MediaEval 2021 task namely "WaterMM: Water Quality in Social Multimedia". The task aims at analyzing social media posts relevant to water quality with particular focus on the aspects like watercolor, smell, taste, and related illnesses. To this aim, a multimodal dataset containing both textual and visual information along with meta-data is provided. Considering the quality and quantity of available content, we mainly focus on textual information by employing three different models individually and jointly in a late-fusion manner. These models includ

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Negative / Null Result Report

Engaging Education About Risks of Opioid Use With Patients Before Elective Surgery of the Lower Extremity Did Not Reduce Postoperative Opioid Utilization: A Randomized Controlled Trial

Daniel I. Rhon, Tina A. Greenlee, Rachel Mayhew et al. · 2022 · Journal of the American Academy of Orthopaedic Surgeons

Introduction: After elective orthopaedic surgery, many individuals go on to become long-term opioid users. Mitigating this risk has become a priority for surgeons, other members of the medical care team, and healthcare systems. The purpose…

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Negative / Null Result ReportOpen accessMathematics

Obstructions for automorphic quasiregular maps and Lattès-type uniformly quasiregular maps

Ilmari Kangasniemi · 2019 · arXiv

Suppose that $M$ is a closed, connected, and oriented Riemannian $n$-manifold, $f \colon \mathbb{R}^n \to M$ is a quasiregular map automorphic under a discrete group $Γ$ of Euclidean isometries, and $f$ has finite multiplicity in a fundamental cell of $Γ$. We show that if $Γ$ has a sufficiently large translation subgroup $Γ_T$, then $\dim Γ\in \{0, n-1, n\}$. If $f$ is strongly automorphic and induces a non-injective Lattès-type uniformly quasiregular map, then the same holds without the assumption on the size of $Γ_T$. Moreover, an even stronger restriction holds in the Lattès case if $M$ is

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Negative / Null Result ReportOpen accessComputer Science

Charm-quark Yukawa Coupling in $h\rightarrow c\bar{c}γ$ at LHC

Tao Han, Benjamin Nachman, Xing Wang · 2018 · arXiv

It is extremely challenging to probe the charm-quark Yukawa coupling at hadron colliders primarily due to the large Standard Model (SM) background (including $h\to b\bar b$) and the lack of an effective trigger for the signal $h\to c\bar c$. We examine the feasibility of probing this coupling at the LHC via a Higgs radiative decay $h\rightarrow c\bar{c}γ$. The existence of an additional photon in the final state may help for the signal identification and background suppression. Adopting a refined triggering strategy and utilizing basic machine learning, we find that a coupling limit of about 8

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Negative / Null Result Report

A Baldrige Portfolio: Does Quality Outperform The Market?

John A. Helmuth, Hei-Wai Lee · 2011 · International Business & Economics Research Journal (IBER)

This paper investigates the claim, by the Department of Commerce, that a portfolio of Baldrige National Quality Award winners outperforms the market. They find that there is a 92 percent return for Baldrige winners as compared to a 33…

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Negative / Null Result ReportOpen accessComputer Science

The ATLAS discovery potential for a heavy charged Higgs boson in gg->tbH^{+-} with H^{+-}->tb

K. A. Assamagan, N. Gollub · 2004 · arXiv

The feasibility of detecting a heavy charged Higgs boson, m(H^{+-})>m(t)+m(b), decaying in the H^{+-}->tb channel is studied with the fast simulation of the ATLAS detector. We study the gg->H^{+-}tb production process at the LHC which together with the aforementioned decay channel leads to four b-quarks in the final state. The whole production and decay chain reads gg->H^{+-}tb->t\bar{t}b\bar{b}->b\bar{b}b\bar{b}lν\bar{q}q'. Combinatorial background is a major difficulty in this multi-jet environment but can be overcome by employing multivariate techniques in the event reconstruction. Requirin

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