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20,240 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 accessEngineering

How to Teach DNNs to Pay Attention to the Visual Modality in Speech Recognition

George Sterpu, Christian Saam, Naomi Harte · 2020 · arXiv

Audio-Visual Speech Recognition (AVSR) seeks to model, and thereby exploit, the dynamic relationship between a human voice and the corresponding mouth movements. A recently proposed multimodal fusion strategy, AV Align, based on state-of-the-art sequence to sequence neural networks, attempts to model this relationship by explicitly aligning the acoustic and visual representations of speech. This study investigates the inner workings of AV Align and visualises the audio-visual alignment patterns. Our experiments are performed on two of the largest publicly available AVSR datasets, TCD-TIMIT and

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Negative / Null Result ReportOpen accessComputer Science

ArchAgent: Agentic AI-driven Computer Architecture Discovery

Raghav Gupta, Akanksha Jain, Abraham Gonzalez et al. · 2026 · arXiv

Agile hardware design flows are a critically needed force multiplier to meet the exploding demand for compute. Recently, agentic generative AI systems have demonstrated significant advances in algorithm design, improving code efficiency, and enabling discovery across scientific domains. Bridging these worlds, we present ArchAgent, an automated computer architecture discovery system built on AlphaEvolve. We show ArchAgent's ability to automatically design/implement state-of-the-art (SoTA) cache replacement policies (architecting new mechanisms/logic, not only changing parameters), broadly withi

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Negative / Null Result ReportOpen accessComputer Science

Fully Dynamic Algorithms for Minimum Weight Cycle and Related Problems

Adam Karczmarz · 2021 · arXiv

We consider the directed minimum weight cycle problem in the fully dynamic setting. To the best of our knowledge, so far no fully dynamic algorithms have been designed specifically for the minimum weight cycle problem in general digraphs. One can achieve $\tilde{O}(n^2)$ amortized update time by simply invoking the fully dynamic APSP algorithm of Demetrescu and Italiano [J. ACM'04]. This bound, however, yields no improvement over the trivial recompute-from-scratch algorithm for sparse graphs. Our first contribution is a very simple deterministic $(1+ε)$-approximate algorithm supporting vertex

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Negative / Null Result ReportOpen accessComputer Science

Learning Robust State Abstractions for Hidden-Parameter Block MDPs

Amy Zhang, Shagun Sodhani, Khimya Khetarpal et al. · 2020 · arXiv

Many control tasks exhibit similar dynamics that can be modeled as having common latent structure. Hidden-Parameter Markov Decision Processes (HiP-MDPs) explicitly model this structure to improve sample efficiency in multi-task settings. However, this setting makes strong assumptions on the observability of the state that limit its application in real-world scenarios with rich observation spaces. In this work, we leverage ideas of common structure from the HiP-MDP setting, and extend it to enable robust state abstractions inspired by Block MDPs. We derive instantiations of this new framework f

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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 Report

PELAKSANAAN ASESMEN DALAM PERKEMBNGAN MOTORIK HALUS DI TK PUTRA 1 PALEMBANG

Lidia Oktamarina, Wahidatul Khasanah, Yosi Amanda et al. · 2024 · SIGNIFICANT : Journal Of Research And Multidisciplinary

Penelitian Ini Berjudul Pelaksanaan Asesmen Dalam Perkembngan Motorik Halus Di Tk Putra 1 Palembang. Masalah dalam penelitian ini adalah bagaimana Pelaksanaan Asesmen Dalam Perkembngan Motorik Halus Di Tk Putra 1 Palembang. Penelitian ini…

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Negative / Null Result Report

Clinically significant bradycardia in children with respiratory syncytial virus bronchiolitis receiving dexmedetomidine: effect modification by mechanical ventilation

Rasha S Farag, Aditya S Kalluri, Geetha Iyer et al. · 2025 · BMJ Paediatrics Open

Background Limited evidence exists on the additive risk of bradycardia in children with respiratory syncytial virus (RSV) bronchiolitis receiving dexmedetomidine (DMED). We aim to study the association between RSV bronchiolitis and…

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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

Assessing the Effect of Subsidy Removal on Cost- Significant Material and Labour within Anambra State Construction Economy

Uchechi Vanessa Alintah-Abel, Francisca Nkachukwu Okeke, Eucharia Chika Enebe · 2025 · British Journal of Multidisciplinary and Advanced Studies

The goal of most countries is the desire to maintain a stable price level of goods and services. This however, appears to be an uphill task given the incidence of subsidy removal that is presently ravaging the developing economies of the…

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Negative / Null Result Report

Effect of Broadness of Wave Spectrum on Significant Wave Height and Wave Power for Open Ocean Conditions of the Peru Basin

Dennys De La Torre, Jaime Luyo, Arturo Ortega · 2024 · Journal of Offshore Mechanics and Arctic Engineering

Abstract When estimating significant wave height and wave power, it is regularly assumed 4 for the spectral estimate factor. It means considering a narrowband wave spectrum. That approach is accurate enough when the spectral broadness…

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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 Report

ANALISIS PENDIDIKAN KARAKTERISTIK AKHLAK ANAK USIA SD/MI DI ERA SOCIETY 5.0

Indriani Indriani, Astrid Putri Pratiwi, Jauhara Jauhara et al. · 2023 · SIGNIFICANT : Journal Of Research And Multidisciplinary

Upaya menanamkan perilaku yang baik, mulia pada anak merupakan pendidikan karakter pada anak usia dini. Lingkungan dimana anak berada dapat menjadi bagian dari pendidikan karakter anak. Keluarga adalah lingkungan pertama bagi anak sehingga…

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Negative / Null Result Report

Abstract 4138602: Effect of Left Ventricular Ejection Fraction On Computed Tomography-Derived Fractional Flow Reserve Diagnostic Accuracy For Significant Coronary Artery Disease

Offdan Narvaez-Guerra, Evan Offord, Mawulorm Denu et al. · 2024 · Circulation

Background: Coronary Computed Tomography Angiography (CCTA) and CT-derived fractional flow reserve (CT-FFR) accurately assess the severity of coronary artery disease. However, the diagnostic accuracy of CT-FFR in patients with low left…

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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 Report

Abstract LB-243: microRNA mimics: siRNA lessons apply. miRNA mimics exhibit a significant off-target effect that is cell-line, length and dose dependent.

Mae A. Goldgraben, Anna Git, Oscar Rueda et al. · 2013 · Cancer Research

Abstract In light of the great success of siRNA reagents in modern research, similar reagents have also become increasingly popular to study miRNAs in cancer biology. To explore the endogenous function of a particular miRNA in fine-tuning…

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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 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 Report

Failure to replicate the Aubert-Fleischl effect

Björn Jörges, Laurence R. Harris · 2025 · PLOS One

For many years the accepted wisdom in vision science has been that humans tend to underestimate the speed of an object when they pursue it with their gaze in comparison to when they fixate a spot in the visual scene and the object moves…

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Negative / Null Result Report

Can Public Information Replicate Institutional Bond Price Vendors?

Erik Huesca Burela · 2026 · Revista Mexicana de Economía y Finanzas

This paper aims to determine whether a transparent, vendor-style bond pricing framework built exclusively from public information can match the pricing accuracy of institutional vendors. The methodology constructs Treasury-based yield…

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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 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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