Negative / Null Result ReportOpen accessPsychology
Susan M. Sheridan, Lisa L. Knoche, Carolyn Pope Edwards et al. · 2010 · Early Education and Development
RESEARCH FINDINGS: Parental engagement with children has been linked to a number of adaptive characteristics in preschool children, and relationships between families and professionals are an important contributor to school readiness.…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Mark C. Lloyd, Jessica J. Cunningham, Marilyn M. Bui et al. · 2016 · Cancer Research
Spatial heterogeneity in tumors is generally thought to result from branching clonal evolution driven by random mutations that accumulate during tumor development. However, this concept rests on the implicit assumption that cancer cells…
View details →Negative / Null Result ReportOpen accessMedicine
C. Schilder, Caroline Seynaeve, L.V.A.M. Beex et al. · 2010 · Journal of Clinical Oncology
PURPOSE: To evaluate the influence of adjuvant tamoxifen and exemestane on cognitive functioning in postmenopausal patients with breast cancer (BC). PATIENTS AND METHODS: Neuropsychological assessments were performed before the start (T1)…
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Zhichuan Li · 2016 · Investment Analysts Journal
The endogeneity problem has always been one, if not the only, obstacle to understanding the true relationship between different aspects of empirical corporate finance. Variables are typically endogenous, instruments are scarce, and…
View details →Negative / Null Result ReportEnvironmental Science
Thomas Bell · 2010 · The ISME Journal
Community similarity declines with increasing geographic distance if species tend to be locally adapted or if they are dispersal limited. The distance-decay of similarity has been shown for bacteria previously, but distinguishing between…
View details →Negative / Null Result ReportBiochemistry, Genetics and Molecular Biology
Jacob M. Allen, Margret E. Berg Miller, Brandt D. Pence et al. · 2015 · Journal of Applied Physiology
We have previously shown that voluntary wheel running (VWR) attenuates, whereas forced treadmill running (FTR) exacerbates, intestinal inflammation and clinical outcomes in a mouse model of colitis. As the gut microbiome is implicated in…
View details →Negative / Null Result ReportOpen accessComputer Science
Anita Nanda, Bibhuti Bhusan Mohapatra, Abikesh Prasada Kumar Mahapatra et al. · 2021 · International Journal of Statistics and Applied Mathematics
Examining a huge amount of data is a typical issue in any research process. However, different statistical processes and techniques play essential role to derive a meaningful conclusion from the presented enormous data. Control of type I…
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
Matteo Tamburini, Ф. Пегораро, A. Di Piazza et al. · 2010 · New Journal of Physics
Radiation reaction (RR) effects on the acceleration of a thin plasma foil by a superintense laser pulse in the radiation pressure dominated regime are investigated theoretically. A simple suitable approximation of the Landau-Lifshitz equation for the RR force and a novel leapfrog pusher for its inclusion in particle-in-cell simulations are provided. Simulations for both linear and circular polarization of the laser pulse are performed and compared. It is found that at intensities exceeding $10^{23} \Wcm$ the radiation reaction force strongly affects the dynamics for a linearly polarized laser
View details →Negative / Null Result ReportEconomics, Econometrics and Finance
ED DEHAAN, Joshua Madsen, Joseph D. Piotroski · 2016 · Journal of Accounting Research
We investigate whether unpleasant environmental conditions affect stock market participants’ responses to information events. We draw from psychology research to develop a new prediction that weather-induced negative moods reduce market…
View details →Negative / Null Result ReportBusiness, Management and Accounting
Aloke Ghosh, Antonio Marra, Doocheol Moon · 2010 · Journal of Business Finance & Accounting
Abstract: Primarily motivated by the claims that the recent regulatory initiatives empowering boards and audit committees restrain earnings management, we examine whether board characteristics (composition, size, and structure) and audit…
View details →Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Davey L. Jones, Emily C. Cooledge, Frances C. Hoyle et al. · 2019 · Soil Biology and Biochemistry
The microbial partitioning of organic carbon (C) into either anabolic (i.e. growth) or catabolic (i.e. respiration) metabolic pathways represents a key process regulating the amount of added C that is retained in soil. The factors regulating C use efficiency (CUE) in agricultural soils, however, remain poorly understood. The aim of this study was to investigate substrate CUE from a wide range of soils (n = 970) and geographical area (200,000 km2) to determine which soil properties most influenced C retention within the microbial community. Using a 14C-labeling approach, we showed that the aver
View details →Negative / Null Result ReportSocial Sciences
Brian Jacob, Jens Ludwig · 2012 · American Economic Review
This study estimates the effects of means-tested housing programs on labor supply using data from a randomized housing voucher wait-list lottery in Chicago. Economic theory is ambiguous about the expected sign of any labor supply response.…
View details →Negative / Null Result ReportOpen accessMedicine
Giorgio V. Scagliotti, Joachim von Pawel, Silvia Novello et al. · 2015 · Journal of Clinical Oncology
PURPOSE: Tivantinib, a MET receptor tyrosine kinase inhibitor, demonstrated increased anticancer activity in preclinical and early clinical studies when combined with erlotinib. Our study aimed to confirm efficacy and safety of the…
View details →Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance
Mary Amiti, Oleg Itskhoki, Jozef Konings · 2019 · The Review of Economic Studies
Abstract How strong are strategic complementarities in price setting across firms? In this article, we provide a direct empirical estimate of firms’ price responses to changes in competitor prices. We develop a general theoretical…
View details →Negative / Null Result ReportOpen accessMedicine
US Preventive Services Task Force, Kirsten Bibbins‐Domingo, David C. Grossman et al. · 2017 · JAMA
IMPORTANCE: Preeclampsia affects approximately 4% of pregnancies in the United States. It is the second leading cause of maternal mortality worldwide and may lead to serious maternal complications, including stroke, eclampsia, and organ…
View details →Negative / Null Result ReportOpen accessPsychology
Holly P. O’Rourke, David P. MacKinnon · 2018 · Journal of Studies on Alcohol and Drugs
OBJECTIVE: Mediation models are used in prevention and intervention research to assess the mechanisms by which interventions influence outcomes. However, researchers may not investigate mediators in the absence of intervention effects on…
View details →Negative / Null Result ReportDecision Sciences
Ning Zhang, Yongrok Choi · 2013 · The Social Science Journal
This paper proposes two environmental energy efficiency indices, the pure energy efficiency and scale efficiency based on the slacks-based measure of efficiency in data envelopment analysis (SBM-DEA). These two indices are used to measure…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Matthias Konrad, Meghan L. Vyleta, Fabian J. Theis et al. · 2012 · PLoS Biology
Due to the omnipresent risk of epidemics, insect societies have evolved sophisticated disease defences at the individual and colony level. An intriguing yet little understood phenomenon is that social contact to pathogen-exposed individuals reduces susceptibility of previously naive nestmates to this pathogen. We tested whether such social immunisation in Lasius ants against the entomopathogenic fungus Metarhizium anisopliae is based on active upregulation of the immune system of nestmates following contact to an infectious individual or passive protection via transfer of immune effectors amon
View details →Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance
Katherine Baicker, Amy Finkelstein, Jae Song et al. · 2014 · American Economic Review
In 2008, a group of uninsured low-income adults in Oregon was selected by lottery for the chance to apply for Medicaid. Using this randomized design and 2009 administrative data, we find no significant effect of Medicaid on employment or…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Marco Scutari, Radhakrishnan Nagarajan · 2013 · Artificial Intelligence in Medicine
OBJECTIVE: Modelling the associations from high-throughput experimental molecular data has provided unprecedented insights into biological pathways and signalling mechanisms. Graphical models and networks have especially proven to be useful abstractions in this regard. Ad hoc thresholds are often used in conjunction with structure learning algorithms to determine significant associations. The present study overcomes this limitation by proposing a statistically motivated approach for identifying significant associations in a network. METHODS AND MATERIALS: A new method that identifies significa
View details →Negative / Null Result ReportOpen accessMedicine
Corita R. Grudzen, Lynne D. Richardson, Pauline N. Johnson et al. · 2016 · JAMA Oncology
IMPORTANCE: The delivery of palliative care is not standard of care within most emergency departments (EDs). OBJECTIVE: To compare quality of life, depression, health care utilization, and survival in ED patients with advanced cancer…
View details →Negative / Null Result ReportMedicine
Shitao Rao, Alexandria Lau, Hon‐Cheong So · 2020 · Diabetes Care
OBJECTIVE COVID-19 has become a major public health problem. There is good evidence that ACE2 is a receptor for SARS-CoV-2, and high expression of ACE2 may increase susceptibility to infection. We aimed to explore risk factors affecting…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Nicole Tausch, Miles Hewstone, Jared B. Kenworthy et al. · 2010 · Journal of Personality and Social Psychology
Although intergroup contact is one of the most prominent interventions to reduce prejudice, the generalization of contact effects is still a contentious issue. This research further examined the rarely studied secondary transfer effect…
View details →Negative / Null Result ReportOpen accessMedicine
Margie E. Lachman, Stefan Agrigoroaei, Patricia A. Tun et al. · 2013 · Assessment
Assessment of cognitive functioning is an important component of telephone surveys of health. Previous cognitive telephone batteries have been limited in scope with a primary focus on dementia screening. The Brief Test of Adult Cognition…
View details →Negative / Null Result ReportOpen accessNursing
Patrick D. McGorry, Barnaby Nelson, Connie Markulev et al. · 2016 · JAMA Psychiatry
IMPORTANCE: A promising treatment to prevent onset and improve outcomes in patients at ultrahigh risk for psychosis is dietary supplementation with long-chain ω-3 polyunsaturated fatty acids (PUFAs). OBJECTIVE: To determine whether…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Louise C. Hawkley, Susanne Buecker, Till Kaiser et al. · 2020 · International Journal of Behavioral Development
Prior research in non-U.S. samples has found a complex nonlinear relationship between loneliness and age. This research has shown that established predictors of loneliness - poor health, being unmarried, living alone, and having infrequent…
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
Simone Blasi, Vedran Brdar, Kai Schmitz · 2021 · Physical Review Letters
The North American Nanohertz Observatory for Gravitational Waves has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timing residuals in its 12.5-year data set. We demonstrate that this process admits an interpretation in terms of a stochastic gravitational-wave background emitted by a cosmic-string network in the early Universe. We study stable Nambu-Goto strings in dependence of their tension Gμ and loop size α and show that the entire viable parameter space will be probed by an array of future experiments.
View details →Negative / Null Result ReportAgricultural and Biological Sciences
S.P. Syswerda, Andrew Corbin, D. L. Mokma et al. · 2010 · Soil Science Society of America Journal
Soil C sequestration research has historically focused on the top 0 to 30 cm of the soil profile, ignoring deeper portions that might also respond to management. In this study we sampled soils along a 10‐treatment management intensity…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Daniel Schneider, Orestes P Hastings, Joe LaBriola · 2018 · American Sociological Review
Historic increases in income inequality have coincided with widening class divides in parental investments of money and time in children. These widening class gaps are significant because parental investment is one pathway by which advantage is transmitted across generations. Using over three decades of micro-data from the Consumer Expenditure Survey and the American Heritage Time Use Survey linked to state-year measures of income inequality, we test the relationship between income inequality and class gaps in parental investment. We find robust evidence of wider class gaps in parental financi
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Su Hwan Lee, Yeojun Yun, Soo Jung Kim et al. · 2018 · Journal of Clinical Medicine
There have been few large-scale studies on the relationship between smoking and gut microbiota. We investigated the relationship between smoking status and the composition of gut microbiota. This was a population-based cross-sectional study using Healthcare Screening Center cohort data. A total of 758 men were selected and divided into three groups: never (n = 288), former (n = 267), and current smokers (n = 203). Among the three groups, there was no difference in alpha diversity, however, Jaccard-based beta diversity showed significant difference (p = 0.015). Pairwise permutational multivaria
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