e-ISSN: Pending

Browse the failure-mode index

21,252 real negative results, null findings, and replication failures. 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 Report

VARK: Linking Teaching Strategies to Preferred Learning Styles

Michelle Van Der Wege, null null, null null et al. · 2020 · John Heinrichs Scholarly & Creative Activities Day

Background: Nursing education is constantly changing in order to meet the ever-changing needs of the nursing profession. Long gone are the days of lengthy lectures and rote memorization. In order to adequately meet the demands of the…

View details →
Negative / Null Result Report

Persistent Nanophosphors: Poised to Outperform Bulk Counterparts?

Victor Castaing, Simon Delacroix, Thierry Gacoin et al. · 2026 · Advanced Optical Materials

Abstract The design of advanced materials often reveals how apparent imperfections, such as structural defects or impurities, can be transformed into functional advantages. In insulating oxide matrices, the controlled introduction of…

View details →
Negative / Null Result Report

No significant projected climate change effects on the geographic ranges of marine aquaculture species under the sustainable scenario (SSP 1-1.9, 1.5°C warming)

Amy Leigh Mackintosh, Griffin Goldstein Hill, Mark John Costello et al. · 2025 · npj Ocean Sustainability

Abstract Aquaculture is increasingly relied upon for global seafood production, projected to be the leading supplier by 2030. Climate change impacts on species health and industry productivity are already evident, creating uncertainties…

View details →
Negative / Null Result Report

Vascular Stiffness, Instead of Coronary Artery Calcification, Exhibits Significant Association With Hypertension Risk in General Population

Chia-Ter Chao, Min-Tser Liao, Chung-Kuan Wu · 2025 · American Journal of Hypertension

Abstract BACKGROUND Hypertension (HTN) significantly increases cardiovascular risk worldwide, and its incidence is expected to rise further over time. Both coronary artery calcification (CAC) and vascular stiffness (VS) potentially…

View details →
Negative / Null Result Report

EFEKTIVITAS PUSAT INFORMASI KONSELING REMAJA (PIK-R); STUDI KUALITATIF DENGAN TEKNIK MOST SIGNIFICANT CHANGE (MSC)

Yoga Tri Nugroho, Rumita Ena Sari, Arnild Augina Meckarische · 2021 · JURNAL ILMU DAN TEKNOLOGI KESEHATAN TERPADU

This study aimed to describe the most significant change stories in the indicators of the effectiveness of the Adolescent Counseling Information Center (PIK-R) at SMA Negeri 4 Kota Jambi. This research was qualitative study with a…

View details →
Negative / Null Result Report

Burden of Significant Anxiety and Stress Symptoms in Persons with Visual Impairment in a Nigerian Hospital

Suhanyah Okeke, Justus Uchenna Onu, Ifeoma Nwabuogo Asimadu et al. · 2023 · Journal of the Nigerian Academy of Medicine

Background: Visual impairment (VI) presents a unique situation for adaptation with diverse socio-cultural and psychological consequences. However, the treatment of patients with visual impairment (PVI) in Nigeria is yet to embrace the…

View details →
Negative / Null Result Report

Implementation of Computerized Curricular Assistive Tools (CCAT) And Its Effect on Student Preparedness for the New NCLEX-RN Test Plan

Lindsey Schofield, null null, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day

Undergraduate students achieving a first-time pass on the NCLEX is the ultimate outcome post-graduation. First-time pass rates on the NCLEX allow students to transition into their nursing careers smoothly; for nursing schools to receive…

View details →
Negative / Null Result Report

Outcome of Second Line Treatment in Patients with Chronic Lymphocytic Leukemia Did Not Improve 2002-2013: A Population-Based Study from a Well-Defined Geographic Region

Anna Asklid, Agnes Mattsson, Einar Björgvinsson et al. · 2015 · Blood

Abstract Background: Treatment of relapsed or refractory (R/R) chronic lymphocytic leukemia (CLL) remains challenging. Major progress has been achieved with new agents such as ibrutinib and idelalisib. However relapses still occur with…

View details →
Negative / Null Result Report

Correlation Analysis of Bronchial Blocker Insertion Depth in Thoracic Surgery: A Prospective Observational Study

Yang Xiao null, Wei Kang null, Qibin Ke null et al. · 2025 · American Journal of Clinical and Experimental Medicine

Background: The insertion depth of the bronchial blocker demands precise positioning and bronchoscopic confirmation. This study aims to investigate the parameters that influence the insertion depth of bronchial blockers in thoracic…

View details →
Negative / Null Result Report

Screening check test to confirm the relative reactivity and applicability of 2,4-dinitrophenylhydrazine impregnated-filters for formaldehyde on other compounds

Naoko Inoue, Mitsutoshi Takaya · 2022 · Journal of Occupational Health

Abstract Objectives A simple check test method was designed to confirm whether a 2,4-dinitrophenylhydrazine (DNPH) filter for formaldehyde can be used to measure other compounds. Methods Sample mixtures containing the same concentrations…

View details →
Negative / Null Result ReportOpen accessComputer Science

A Quasi-Experiment comparing the health of unhoused people who have and have not experienced an eviction in King County, WA

Ihsan Kahveci, Timothy A. Thomas, Nathalie E. Williams et al. · 2026 · arXiv

Home eviction poses a significant threat to housing stability, a critical determinant of health. This study examines the relationship between eviction and health and substance use within the unhoused population of King County, Washington. Using a sample of 1,106 individuals experiencing homelessness, we employed a quasi-experimental design to compare the health outcomes of those who have experienced eviction with those who have not. Our findings reveal eviction is associated with an 8.3% point increase (SE = 0.039) in the likelihood of reporting poor general health and an 9.5% increase (SE = 0

View details →
Negative / Null Result ReportOpen accessComputer Science

Investigating the Effect of Prior Exposure and Fidelity on Quality and Realism Perception of VR Digital Twins

Maximilian Warsinke, Maurizio Vergari, Tanja Kojić et al. · 2025 · arXiv

This study explores how prior exposure to physical objects influences the quality and realism perception of Digital Twins (DT) with varying levels of fidelity in Virtual Reality (VR). In a mixed experimental design, 24 participants were divided into two equal groups: an exposure group, in which members were shown physical objects before inspecting and rating their replicas in VR, and a control group without prior knowledge. Three objects were presented, each under four fidelity conditions with varying texture resolution and geometric detail. Participants rated perceived quality and realism thr

View details →
Negative / Null Result ReportOpen accessComputer Science

Thinking Outside the Lab: VR Size & Depth Perception in the Wild

Rahul Arora, Jiannan Li, Gongyi Shi et al. · 2021 · arXiv

Size and distance perception in Virtual Reality (VR) have been widely studied, albeit in a controlled laboratory setting with a small number of participants. We describe a fully remote perceptual study with a gamified protocol to encourage participant engagement, which allowed us to quickly collect high-quality data from a large, diverse participant pool (N=60). Our study aims to understand medium-field size and egocentric distance perception in real-world usage of consumer VR devices. We utilized two perceptual matching tasks -- distance bisection and size matching -- at the same target dista

View details →
Negative / Null Result ReportOpen accessComputer Science

How Voice and Helpfulness Shape Perceptions in Human-Agent Teams

Samuel Westby, Richard J. Radke, Christoph Riedl et al. · 2023 · arXiv

Voice assistants are increasingly prevalent, from personal devices to team environments. This study explores how voice type and contribution quality influence human-agent team performance and perceptions of anthropomorphism, animacy, intelligence, and trustworthiness. By manipulating both, we reveal mechanisms of perception and clarify ambiguity in previous work. Our results show that the human resemblance of a voice assistant's voice negatively interacts with the helpfulness of an agent's contribution to flip its effect on perceived anthropomorphism and perceived animacy. This means human tea

View details →
Negative / Null Result ReportMedicine

Effect and safety of Neiguan acupoint injection with astragalus injection for chronic heart failure with qi-deficiency and blood-stasis syndrome: a randomized controlled trial.

Gou, He, Zhuo · 2026 · Frontiers in medicine

To investigate the effect and safety of astragalus injection at Neiguan (PC6) for chronic heart failure (CHF; HF) with qi-deficiency and blood-stasis syndrome, and its effect on the renin-angiotensin-aldosterone system (RAAS). A…

View details →
Negative / Null Result ReportOpen accessMathematics

Understanding the Characteristics of Frequent Users of Emergency Departments: What Role Do Medical Conditions Play?

Jens Rauch, Jens Hüsers, Birgit Babitsch et al. · 2018 · arXiv

Frequent users of emergency departments (ED) pose a significant challenge to hospital emergency services. Despite a wealth of studies in this field, it is hardly understood, what medical conditions lead to frequent attendance. We examine (1) what ambulatory care sensitive conditions (ACSC) are linked to frequent use, (2) how frequent users can be clustered into subgroups with respect to their diagnoses, acuity and admittance, and (3) whether frequent use is related to higher acuity or admission rate. We identified several ACSC that highly increase the risk for heavy ED use, extracted four majo

View details →
Negative / Null Result ReportOpen accessComputer Science

String Junction Effects for Forward and Central Baryon Production in Hadron-Nucleus Collisions

F. W. Bopp, Yu. M. Shabelski · 2006 · arXiv

The process of baryon number transfer due to string junction propagation in rapidity space is considered. It leads to a significant effect in the net baryon production in pA collisions at mid-rapidities and an even more significant effect in the forward hemisphere for the cases of πA interactions. The results of numerical calculations in the framework of the Quark-Gluon String Model are in reasonable agreement with the data. Special consideration is given to Λproduced in {π^-}-A collisions extracted from data of WA89 Collaboration.

View details →
Negative / Null Result ReportOpen accessPhysics

Consistency study of high- and low-accreting Mg ii quasars: No significant effect of the Fe ii to Mg ii flux ratio on the radius-luminosity relation dispersion

Narayan Khadka, Michal Zajaček, Swayamtrupta Panda et al. · 2022 · arXiv

We use observations of 66 reverberation-measured \Mgii\ quasars (QSOs) in the redshift range $0.36 \leq z \leq 1.686$ -- a subset of the 78 QSOs we previously studied that also have \rfe\ (flux ratio parameter of UV \Feii\ to \Mgii\ that is used as an accretion-rate proxy) measurements -- to simultaneously constrain cosmological model parameters and QSO 2-parameter and 3-parameter radius-luminosity ($R-L$) relation parameters in six different cosmological models. We find that these QSO $R-L$ relation parameters are independent of the assumed cosmological model and so these QSOs are standardiza

View details →
Negative / Null Result ReportOpen accessPhysics

Integrating spectrophotometric and XRD analyses in the investigation of burned dental remains

Rabiah A. Rahmat, Melissa A. Humphries, Jeremy J. Austin et al. · 2020 · arXiv

Heat alters colour and crystallinity of teeth by destruction of the organic content and inducing hydroxyapatite crystal growth. The colour and crystallite changes can be quantified using spectrophotometric and x-ray diffraction analyses, however these analyses are not commonly used in combination to evaluate burned dental remains. In this study, thirty-nine teeth were incinerated at 300-1000$^\circ$C for 15 and 30 minutes and then measured using a spectrophotometer and an x-ray diffractometer. Response variables used were lightness, L$^\ast$, and chromaticity a$^\ast$ and b$^\ast$ and luminanc

View details →
Negative / Null Result ReportOpen accessPhysics

Dynamics of the fast solar tachocline: II. Migrating field

E. Forgacs-Dajka · 2006 · arXiv

We present detailed numerical calculations of the fast solar tachocline based on the assumption that the dynamo field dominates over the dynamics of the tachocline. In the present paper of the series, we focus on three shortfalls of the earlier models. First, instead of the simple oscillating dipole poloidal field we study the more general magnetic field structures reminiscent of the butterfly diagram. The migrating field is prescribed as the observed axisymmetric radial magnetic field Stenflo (1988, 1994). Our results are in good agreement with our analitical estimate and our previous works i

View details →
Negative / Null Result ReportOpen accessPhysics

Fractal correlations in the CfA2-South redshift survey

M. Joyce, M. Montuori, F. Sylos Labini · 1999 · arXiv

We report our analysis of the properties of galaxy clustering for a new redshift sample of galaxies, the CfA2-South catalog, using statistical methods which do not rely on the assumption of homogeneity. We find that, up to ~ 20 Mpc/h, which is the largest scale to which correlation properties can be reliably inferred, the galaxy clustering is scale-invariant and characterized by a fractal dimension D=1.9 \pm 0.1. Further there is no statistical evidence for homogeneity at any of the larger scales (up to ~150 Mpc/h) probed more weakly by the catalog. These results means that characteristic ``co

View details →
Negative / Null Result ReportOpen accessPhysics

Kinematic Control of the Inertiality of the System of Tycho-2 and UCAC2 Stellar Proper Motions

Vadim V. Bobylev, Maxim Yu. Khovritchev · 2006 · arXiv

Based on the Ogorodnikov-Milne model, we analyze the proper motions of Tycho-2 and UCAC2 stars. We have established that the model component that describes the rotation of all stars under consideration around the Galactic y axis differs significantly from zero at various magnitudes. We interpret this rotation found using the most distant stars as a residual rotation of the ICRS/Tycho-2 system relative to the inertial reference frame. For the most distant ($d\approx900$ pc) Tycho-2 and UCAC2 stars, the mean rotation around the Galactic y axis has been found to be $M_{13}=-0.37\pm0.04$ mas yr$^{

View details →