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Failure-mode index

Search what already failed

A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.

21720 results · page 360 of 724

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…

View details →DOI: 10.5435/jaaos-d-21-00603
Protocol

Demonstrate the quality of your bereavement service

Elliott Jane · 2011 · BMJ Supportive & Palliative Care

Introduction Two bereavement audit tools have been written to enable Hospices to collect crucial data to evidence high quality service provision based on national standards. Aims To enable hospices to evidence the standard of their…

View details →DOI: 10.1136/bmjspcare-2011-000105.128
Negative / Null Result Report

Evaluating LSP-TEOC.Pro: What we did and what we found out

Joseph Cullen, Gregory Holloway · 2025 · Glottodidactica

This article presents an evaluation of the LSP-TEOC.Pro project. It sets out the evaluation methodology applied, how it was implemented and the key evaluation findings. Given the exploratory nature of the project, the range and complexity…

View details →DOI: 10.14746/gl.2025.52.1.6
Negative / Null Result Report

Mathematics Tournament as a Method to Demonstrate and to Enhance Learning Outcomes

�������, Andrey Chiganov, �������� et al. · 2015 · Standards and Monitoring in Education

The paper shares the experience of interacting with Mathematics teachers and 5th�6th grade schoolchildren in order to obtain and demonstrate new
 learning outcomes in mastering Mathematics by means of such a non-conventional…

View details →DOI: 10.12737/11850
Negative / Null Result Report

Obesity‐resistant rats demonstrate enhanced energy sensing and metabolism

Timothy Daniel Allerton, Stefany D. Primeaux · 2013 · The FASEB Journal

The propensity for some individuals to develop obesity has been linked to intake of a high fat diet (HFD) and physical inactivity. However, some individuals resist obesity through improved energy sensing and other compensatory measures to…

View details →DOI: 10.1096/fasebj.27.1_supplement.1153.5
Negative / Null Result Report

Antifouling Polymer-Coated Anthocyanin-Loaded Cellulose Nanocrystals Demonstrate Reduced Bacterial Detection Capabilities

Catherine Doyle, Diego Combita, Matthew J. Dunlop et al. · 2025 · Polymers

Microbial contamination is a global concern with impacts on a variety of industries ranging from marine to biomedical applications. Recent research on hydrophilic polymer-based coatings is focused on combining antifouling polymers with…

View details →DOI: 10.3390/polym17152007
Negative / Null Result Report

Hayaller-hayatlar: Turizm öğrencileri ne umdu ne buldu?

Abdullah Ülkü · 2025 · Business & Management Studies: An International Journal

This study aims to examine the career perceptions and attitudes of tourism students and graduates, identifying the differences between their expectations before graduation and their experiences in the workforce. A quantitative approach was…

View details →DOI: 10.15295/bmij.v13i3.2603
Negative / Null Result Report

“Scratch a Russian, Find a Turk”

Charles J. Halperin · 2018 · Russian History

In this first-rate monograph, Cornelia Soldat confirms earlier impressionistic assertions that the portrayal of Ivan iv as a tyrant and the Muscovites as barbarians in German-language pamphlets (Flugschriften) written as propaganda during…

View details →DOI: 10.1163/18763316-04504004
Negative / Null Result ReportOpen accessPhysics

Simulated Annealing with Tsallis Weights - A Numerical Comparison

Ulrich H. E. Hansmann · 1997 · arXiv

We discuss the use of Tsallis generalized mechanics in simulated annealing algorithms. For a small peptide it is shown that older implementations are not more effective than regular simulated annealing in finding ground state configurations. We propose a new implementation which leads to an improvement over regular simulated annealing.

Negative / Null Result Report

Researchers Find Gene That Nearly Triples Risk of Alzheimer’s

· 2013 · The ASHA Leader

No Difference Between Computer- and Paper-Based Comprehension, Sound Booth Proves Best for Remote Speech Perception, Earlier CI Implantation Spurs Speech Development, Cardiorespiratory Health May Predict Better Hearing, Researchers Find…

View details →DOI: 10.1044/leader.rib5.18012013.32
Failed Experiment Report

The French in Egypt in 1798—1801: Failed Dialogue of Civilizations

Alexandre Tchoudinov · 2021 · ISTORIYA

The article is devoted to the problem of cross-cultural interaction between the French and the Arabs during the Egyptian expedition of Napoleon Bonaparte 1798—1801. Using a comparative analysis of a wide range of French sources and Arab…

View details →DOI: 10.18254/s207987840015129-0
Negative / Null Result ReportOpen accessMathematics

A New Bound for the Brown--Erdős--Sós Problem

David Conlon, Lior Gishboliner, Yevgeny Levanzov et al. · 2019 · arXiv

Let $f(n,v,e)$ denote the maximum number of edges in a $3$-uniform hypergraph not containing $e$ edges spanned by at most $v$ vertices. One of the most influential open problems in extremal combinatorics then asks, for a given number of edges $e \geq 3$, what is the smallest integer $d=d(e)$ so that $f(n,e+d,e) = o(n^2)$? This question has its origins in work of Brown, Erdős and Sós from the early 70's and the standard conjecture is that $d(e)=3$ for every $e \geq 3$. The state of the art result regarding this problem was obtained in 2004 by Sárközy and Selkow, who showed that $f(n,e + 2 + \lf

Negative / Null Result ReportOpen accessComputer Science

Designing quantum experiments with a genetic algorithm

Rosanna Nichols, Lana Mineh, Jesús Rubio et al. · 2018 · arXiv

We introduce a genetic algorithm that designs quantum optics experiments for engineering quantum states with specific properties. Our algorithm is powerful and flexible, and can easily be modified to find methods of engineering states for a range of applications. Here we focus on quantum metrology. First, we consider the noise-free case, and use the algorithm to find quantum states with a large quantum Fisher information (QFI). We find methods, which only involve experimental elements that are available with current or near-future technology, for engineering quantum states with up to a 100-fol

Negative / Null Result ReportOpen accessMathematics

Counting Square-full Solutions to $x+y=z$

D. R. Heath-Brown · 2026 · arXiv

We show that there are $O(B^{3/5-3/1555+\ep})$ triples $(x,y,z)$ of square-full integesr up to $B$ satisfying the equation $x+y=z$ for any fixed $\ep>0$. This is the first improvement over the `easy' exponent $3/5$, given by Browning and Van Valckenborgh. One new tool is a strong uniform bound for the counting function for equations $aX^3+bY^3=cZ^3$.

Negative / Null Result ReportOpen accessMathematics

A new upper bound on the smallest counterexample to the Mertens conjecture

John Rozmarynowycz, Seungki Kim · 2023 · arXiv

We report the finding of the new upper bound on the lowest positive integer $x$ for which the Mertens conjecture \begin{equation*} \left| \sum_{1 \leq n \leq x} μ(n) \right| < \sqrt{x} \end{equation*} fails to hold: $x < \exp(1.017 \times 10^{29})$, an improvement over previously known $\exp(1.59 \times 10^{40})$ due to Kotnik and te Riele [7].

Negative / Null Result ReportOpen accessComputer Science

WiFi-based Global Localization in Large-Scale Environments Leveraging Structural Priors from osmAG

Xu Ma, Jiajie Zhang, Fujing Xie et al. · 2025 · arXiv

Global localization is essential for autonomous robotics, especially in indoor environments where the GPS signal is denied. We propose a novel WiFi-based localization framework that leverages ubiquitous wireless infrastructure and the OpenStreetMap Area Graph (osmAG) for large-scale indoor environments. Our approach integrates signal propagation modeling with osmAG's geometric and topological priors. In the offline phase, an iterative optimization algorithm localizes WiFi Access Points (APs) by modeling wall attenuation, achieving a mean localization error of 3.79 m (35.3\% improvement over tr