Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Giovanna Paolone, Christopher C. Angelakos, Paul Meyer et al. · 2013 · Journal of Neuroscience
Some rats [sign-trackers (STs)] are especially prone to attribute incentive salience to reward cues, relative to others [goal-trackers (GTs)]. Thus, reward cues are more likely to promote maladaptive reward-seeking behavior in STs than…
View details →Negative / Null Result ReportOpen accessEnvironmental Science
Sara O.I. Ramirez-Gomez, Carlos A. Torres-Vitolas, Kate Schreckenberg et al. · 2015 · Ecosystem Services
Over the last two decades indigenous peoples in the lower Caquetá River basin in Colombia have experienced detrimental changes in the provision of important ecosystem services in ways that have significant implications for the maintenance of their traditional livelihoods. To assess these changes we conducted eight participatory mapping activities and convened 22 focus group discussions. We focused the analysis on two types of change: (1) changes in the location of ecosystem services provisioning areas and (2) changes in the stock of ecosystem services. The focal ecosystem services include serv
View details →Negative / Null Result ReportOpen accessSocial Sciences
Alec Stone Sweet, Thomas L. Brunell · 2012 · American Political Science Review
In an article previously published by the APSR , Carrubba, Gabel, and Hankla claim that the decision making of the European Court of Justice (ECJ) has been constrained—systematically—by the threat of override on the part of member state…
View details →Negative / Null Result ReportDecision Sciences
Gloria Mark, Shamsi T. Iqbal, Mary Czerwinski et al. · 2016
While email provides numerous benefits in the workplace, it is unclear how patterns of email use might affect key workplace indicators of productivity and stress. We investigate how three email use patterns: duration, interruption habit,…
View details →Negative / Null Result ReportAgricultural and Biological Sciences
Kazushi Takahashi, Christopher B. Barrett · 2013 · American Journal of Agricultural Economics
Abstract The yield potential of a set of improved rice management practices, known as the System of Rice Intensification (SRI), has attracted much attention. Yet we know surprisingly little about SRI's socio‐economic impact. Using data…
View details →Negative / Null Result ReportOpen accessNeuroscience
Stephen B. R. E. Brown, Henk van Steenbergen, Guido P. H. Band et al. · 2012 · Frontiers in Human Neuroscience
The late positive potential (LPP) is an event-related potential (ERP) component over visual cortical areas that is modulated by the emotional intensity of a stimulus. However, the functional significance of this neural modulation remains elusive. We conducted two experiments in which we studied the relation between LPP amplitude, subsequent perceptual sensitivity to a non-emotional stimulus (Experiment 1) and visual cortical excitability, as reflected by P1/N1 components evoked by this stimulus (Experiment 2). During the LPP modulation elicited by unpleasant stimuli, perceptual sensitivity was
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Chris Forman, Nicolas van Zeebroeck · 2012 · Management Science
How did the diffusion of the Internet influence research collaborations within firms? We examine the relationship between business use of basic Internet technology and the size and geographic composition of industrial research teams…
View details →Negative / Null Result ReportEconomics, Econometrics and Finance
Menzie Chinn, Olivier Coibion · 2013 · Journal of Futures Markets
Abstract This study examines the predictive content of futures prices for energy, agricultural, precious and base metal commodities. In particular, we examine whether futures prices are (1) unbiased and/or (2) accurate predictors of…
View details →Negative / Null Result ReportSocial Sciences
Samuel Bazzi, Arya Gaduh, Alexander D. Rothenberg et al. · 2016 · American Economic Review
We use a natural experiment in Indonesia to provide causal evidence on the role of location-specific human capital and skill transferability in shaping the spatial distribution of productivity. From 1979–1988, the Transmigration Program…
View details →Negative / Null Result ReportOpen accessMedicine
Adam C. Naj, Gary W. Beecham, Eden R. Martin et al. · 2010 · PLoS Genetics
Genome-wide association studies (GWAS) of late-onset Alzheimer disease (LOAD) have consistently observed strong evidence of association with polymorphisms in APOE. However, until recently, variants at few other loci with statistically significant associations have replicated across studies. The present study combines data on 483,399 single nucleotide polymorphisms (SNPs) from a previously reported GWAS of 492 LOAD cases and 496 controls and from an independent set of 439 LOAD cases and 608 controls to strengthen power to identify novel genetic association signals. Associations exceeding the ex
View details →Negative / Null Result ReportOpen accessMedicine
Anja Laschkolnig, Barbara Kollerits, Claudia Lamina et al. · 2014 · Cardiovascular Research
AIMS: The relevance of lipoprotein(a) [Lp(a)] concentrations and low-molecular-weight (LMW) apo(a) phenotypes in peripheral arterial disease (PAD) has only been investigated by few studies. Therefore, we analysed this association in three…
View details →Negative / Null Result ReportOpen accessMedicine
Zvinka Z. Zlatar, Martha C. Muniz, Douglas Galasko et al. · 2016 · The Journals of Gerontology Series B
Objectives: Subjective cognitive decline (SCD) is common in older adults; however, its utility in clinic-based samples remains controversial given its strong associations with mood symptoms. Methods: Five hundred nineteen individuals aged…
View details →Negative / Null Result ReportOpen accessPsychology
Emily S. Kappenman, Annmarie MacNamara, Greg Hajcak · 2014 · Social Cognitive and Affective Neuroscience
Threatening stimuli have been shown to preferentially capture attention using a range of tasks and measures. However, attentional bias to threat has not typically been found in unselected individuals using behavioral measures in the…
View details →Negative / Null Result ReportBusiness, Management and Accounting
Henry Laurion, Alastair Lawrence, James Ryans · 2016 · The Accounting Review
ABSTRACT We investigate the effects of audit partner rotation among U.S. publicly listed firms, utilizing the fact that audit partners are periodically copied by name in public correspondence between issuers and the Securities and Exchange…
View details →Negative / Null Result ReportOpen accessImmunology and Microbiology
Luuk van Hooren, Alessandra Vaccaro, Mohanraj Ramachandran et al. · 2021 · Nature Communications
Abstract Gliomas are brain tumors characterized by an immunosuppressive microenvironment. Immunostimulatory agonistic CD40 antibodies (αCD40) are in clinical development for solid tumors, but are yet to be evaluated for glioma. Here, we demonstrate that systemic delivery of αCD40 in preclinical glioma models induces the formation of tertiary lymphoid structures (TLS) in proximity of meningeal tissue. In treatment-naïve glioma patients, the presence of TLS correlates with increased T cell infiltration. However, systemic delivery of αCD40 induces hypofunctional T cells and impairs the response t
View details →Negative / Null Result ReportOpen accessSocial Sciences
Edda Humprecht, Laia Castro, Sina Blassnig et al. · 2022 · Journal of Communication
Abstract Media systems have changed significantly as a result of the development of information technologies. However, typologies of media systems that incorporate aspects of digitalization are rare. This study fills this gap by…
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
R. Cotesta, G. Carullo, Emanuele Berti et al. · 2022 · Physical Review Letters
We analyze GW150914 postmerger data to understand if ringdown overtone detection claims are robust. We find no evidence in favor of an overtone in the data after the waveform peak. Around the peak, the Bayes factor does not indicate the…
View details →Negative / Null Result ReportOpen accessEnvironmental Science
Arnaud Bataille, Scott D. Cashins, Laura F. Grogan et al. · 2015 · Proceedings of the Royal Society B Biological Sciences
The pathogenic chytrid fungus Batrachochytrium dendrobatidis (Bd) can cause precipitous population declines in its amphibian hosts. Responses of individuals to infection vary greatly with the capacity of their immune system to respond to the pathogen. We used a combination of comparative and experimental approaches to identify major histocompatibility complex class II (MHC-II) alleles encoding molecules that foster the survival of Bd-infected amphibians. We found that Bd-resistant amphibians across four continents share common amino acids in three binding pockets of the MHC-II antigen-binding
View details →Negative / Null Result ReportSocial Sciences
Pamela Stone, Lisa Ackerly Hernandez · 2013 · Journal of Social Issues
Using a model of the stigmatization of flexible work based on status legitimation theory, we analyze the experiences of a sample of 54 mothers who “opted out” of professional jobs. Qualitative text analysis reveals that features of women's…
View details →Negative / Null Result ReportOpen accessMedicine
Vijayvel Jayaprakash, Mihai Merzianu, Graham Warren et al. · 2013 · Head & Neck
BACKGROUND: The survival rates and prognostic factors for salivary duct carcinoma (SDC) are not clear. METHODS: Survival estimates and prognostic factors were evaluated for 228 patients with SDC identified from the Surveillance,…
View details →Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Ahmed Bouteska, Taimur Sharif, Faruk Bhuiyan et al. · 2024 · Journal of Cleaner Production
This study investigates the influence of climate change on agriculture productivity and food security in the context of Ethiopia. We use 2011–2020 state level data set of four major seasonal crops of Cash and Food in Ethiopia, namely, barley, wheat, maize, and sorghum. Methodologically, we apply the productivity function and the Ricardian approaches in the modelling for simulating the association of climate change with agriculture productivity. This study documents the interconnectedness among changes in climate, security of food and agriculture, indicating how the prior changes bring the latt
View details →Negative / Null Result ReportOpen accessMedicine
Daniel Gelfond, Sonya L. Heltshe, Chang‐Xing Ma et al. · 2017 · Clinical and Translational Gastroenterology
OBJECTIVES: A defect in bicarbonate secretion contributes to the pathophysiology of gastrointestinal complications in patients with cystic fibrosis (CF). We measured gastrointestinal pH, clinical outcomes, and intestinal transit profiles…
View details →Negative / Null Result ReportMedicine
Laurence Lepage, A Dufour, Jessica Doiron et al. · 2015 · Clinical Journal of the American Society of Nephrology
BACKGROUND AND OBJECTIVES: Hyperkalemia affects up to 10% of patients with CKD. Sodium polystyrene sulfonate has long been prescribed for this condition, although evidence is lacking on its efficacy for the treatment of mild hyperkalemia…
View details →Negative / Null Result ReportOpen accessMedicine
Mary Dankbaar, Jelmer Alsma, Els E. H. Jansen et al. · 2015 · Advances in Health Sciences Education
Simulation games are becoming increasingly popular in education, but more insight in their critical design features is needed. This study investigated the effects of fidelity of open patient cases in adjunct to an instructional e-module on students' cognitive skills and motivation. We set up a three-group randomized post-test-only design: a control group working on an e-module; a cases group, combining the e-module with low-fidelity text-based patient cases, and a game group, combining the e-module with a high-fidelity simulation game with the same cases. Participants completed questionnaires
View details →Negative / Null Result ReportOpen accessComputer Science
Peter E. Clark, Oren Etzioni, Tushar Khot et al. · 2016 · Proceedings of the AAAI Conference on Artificial Intelligence
What capabilities are required for an AI system to pass standard 4th Grade Science Tests? Previous work has examined the use of Markov Logic Networks (MLNs) to represent the requisite background knowledge and interpret test questions, but…
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
Y. W. Wu, M. Sato, M. J. Reid et al. · 2014 · Astronomy and Astrophysics
We report measurements of parallaxes and proper motions of ten high-mass star-forming regions in the Sagittarius spiral arm of the Milky Way as part of the BeSSeL Survey with the VLBA. Combining these results with eight others from the…
View details →Negative / Null Result ReportOpen accessEnvironmental Science
Elizabeth Richardson, Jamie Pearce, Niamh Shortt et al. · 2017 · Environmental Research
INTRODUCTION: Poor mental health in childhood has implications for health and wellbeing in later life. Natural space may benefit children's social, emotional and behavioural development. We investigated whether neighbourhood natural space and private garden access were related to children's developmental change over time. We asked whether relationships differed between boys and girls, or by household educational status. METHODS: were modelled to quantify their independent contributions to SDQ score change over time. RESULTS: Private garden access was strongly related to most SDQ domains, while
View details →Negative / Null Result ReportOpen accessSocial Sciences
Shigeo Hirano, James M. Snyder, Stephen Ansolabehere et al. · 2010 · Quarterly Journal of Political Science
Many observers and scholars argue that primary elections contribute to ideological polarization in U.S. politics. We test this claim using congressional elections and roll call voting behavior. Many of our findings are null. We find little…
View details →Negative / Null Result ReportDentistry
Rachel Anner, Yoav Grossmann, Yael Anner et al. · 2010 · Implant Dentistry
OBJECTIVES: To evaluate the factors associated with long-term implant survival in a large cohort of patients in regular follow-up until data collection. METHODS: The study population consisted of 475 patients who were referred to a private…
View details →Negative / Null Result ReportOpen accessDecision Sciences
M. Dachyar, Liska Banjarnahor · 2017 · Intangible Capital
Purpose: This study explores factors that influence consumer’s purchase intention at three consumer-to-consumer (C2C) e-commerce companies in Indonesia.Design/methodology/approach: 5 Expert opinions are used to determine the indicators of each factor and the Structural Equation Modelling (SEM) method is used to analyze the empirical data of 400 respondents for each company.Findings: It is found different significant factors that influence customer’s purchase intention in each company. Trust and risk are found to be significantly effect purchase intention in Company A. Meanwhile, the other two
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