Negative / Null Result ReportOpen accessComputer Science
Jafar Tanha, Yousef Abdi, Negin Samadi et al. · 2020 · Journal Of Big Data
Abstract Since canonical machine learning algorithms assume that the dataset has equal number of samples in each class, binary classification became a very challenging task to discriminate the minority class samples efficiently in imbalanced datasets. For this reason, researchers have been paid attention and have proposed many methods to deal with this problem, which can be broadly categorized into data level and algorithm level. Besides, multi-class imbalanced learning is much harder than binary one and is still an open problem. Boosting algorithms are a class of ensemble learning methods in
View details →Negative / Null Result ReportPsychology
Tomoko Udo, Carlos M. Grilo · 2019 · International Journal of Eating Disorders
OBJECTIVE: To examine psychiatric and somatic correlates of DSM-5 eating disorders (EDs)-anorexia nervosa (AN), bulimia nervosa (BN), and binge-eating disorder (BED)-in a nationally representative sample of adults in the United States.…
View details →Negative / Null Result ReportMedicine
Daniël B.F. Saris, Andrew Price, Wojciech Widuchowski et al. · 2014 · The American Journal of Sports Medicine
BACKGROUND: Matrix-based cell therapy improves surgical handling, increases patient comfort, and allows for expanded indications with better reliability within the knee joint. Five-year efficacy and safety of autologous cultured…
View details →Negative / Null Result ReportPsychology
Scott R. Braithwaite, Raquel Delevi, Frank D. Fincham · 2010 · Personal Relationships
This study tested the hypothesis that, analogous to married individuals, college students in committed romantic relationships experience greater well-being than single college students. In a sample of 1,621 college students, individuals in…
View details →Negative / Null Result ReportSocial Sciences
Jenny Lee, Gerard T. Kyle, David Scott · 2012 · Journal of Travel Research
The purpose of this study was to explore the factors that drive festival visitor loyalty to host destinations. Our analysis focused on the role of place attachment as a mediator of the relationship between visitors’ positive evaluation of…
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Saadat Saeed, Shumaila Yousafzai, Mirella Yani‐de‐Soriano et al. · 2013 · Journal of Small Business Management
Entrepreneurship education is central to student entrepreneurship. Previous research has attempted to understand the role of entrepreneurship education in the formation of students' entrepreneurial intention and behavior, albeit in an isolated manner. Universities can support entrepreneurship in many ways, but it is important to measure students' perception of the support that they receive in order to understand the extent of such support and its impact on students. The current study proposed and tested an integrative, multiperspective framework. We have hypothesized that the three dimensions
View details →Negative / Null Result ReportOpen accessDecision Sciences
Ibrahim M. Al‐Jabri, M. Sadiq Sohail · 2012 · SSRN Electronic Journal
Many banks in Saudi Arabia are starting to offer banking services through mobile phones. However, not many studies investigate the factors that may help the bankers to design mobile services, which are suitable for and adoptable by bank…
View details →Negative / Null Result ReportBusiness, Management and Accounting
Sumit Agarwal, Souphala Chomsisengphet, Neale Mahoney et al. · 2014 · The Quarterly Journal of Economics
Abstract We analyze the effectiveness of consumer financial regulation by considering the 2009 Credit Card Accountability Responsibility and Disclosure (CARD) Act. We use a panel data set covering 160 million credit card accounts and a…
View details →Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Amandine Cornille, Pierre Gladieux, M.J.M. Smulders et al. · 2012 · PLoS Genetics
The apple is the most common and culturally important fruit crop of temperate areas. The elucidation of its origin and domestication history is therefore of great interest. The wild Central Asian species Malus sieversii has previously been identified as the main contributor to the genome of the cultivated apple (Malus domestica), on the basis of morphological, molecular, and historical evidence. The possible contribution of other wild species present along the Silk Route running from Asia to Western Europe remains a matter of debate, particularly with respect to the contribution of the Europea
View details →Negative / Null Result ReportOpen accessSocial Sciences
Amy Orben, Andrew K Przybylski · 2019 · Psychological Science
The notion that digital-screen engagement decreases adolescent well-being has become a recurring feature in public, political, and scientific conversation. The current level of psychological evidence, however, is far removed from the…
View details →Negative / Null Result ReportOpen accessEngineering
Franco Zunino, Karen Scrivener · 2020 · Cement and Concrete Research
In limestone calcined clay cements (LC3), more hemicarboaluminate and monocarboaluminate is observed, as compared to other blended cements, from the reaction of metakaolin with limestone. In this study, it is shown that the formation of…
View details →Negative / Null Result ReportOpen accessMedicine
Mohamed L. Sorror, Rainer Storb, Brenda M. Sandmaier et al. · 2014 · Journal of Clinical Oncology
PURPOSE: Age has long been used as a major factor for assessing suitability for allogeneic hematopoietic cell transplantation (HCT). The HCT-comorbidity index (HCT-CI) was developed as a measure of health status to predict mortality risk…
View details →Negative / Null Result ReportBusiness, Management and Accounting
Lena Jingen Liang, HS Chris Choi, Marion Joppe · 2017 · Journal of Travel & Tourism Marketing
The purpose of this paper is to extend the research on consumer repurchase intention, perceived value, and perceived risk into the realm of the peer-to-peer economy, specifically in the context of Airbnb. A total of 395 surveys were…
View details →Negative / Null Result ReportOpen accessMedicine
Michael F. Green, Carrie E. Bearden, Tyrone D. Cannon et al. · 2011 · Schizophrenia Bulletin
Social cognitive impairments are consistently reported in schizophrenia and are associated with functional outcome. We currently know very little about whether these impairments are stable over the course of illness. In the current study,…
View details →Negative / Null Result ReportPsychology
Jonathan Leeder, Mark Glaister, Kathleen Pizzoferro et al. · 2012 · Journal of Sports Sciences
Sleep is known to be an important component of recovery from training, yet little is known about the quality and quantity of sleep achieved by elite athletes. The aim of the present study was to quantify sleep in elite athletes using…
View details →Negative / Null Result ReportMedicine
Alex R. Kemper, William T. Mahle, Gerard R. Martin et al. · 2011 · PEDIATRICS
BACKGROUND: Although newborn screening for critical congenital heart disease (CCHD) was recommended by the US Health and Human Services Secretary's Advisory Committee on Heritable Disorders in Newborns and Children to promote early…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Stacia E. Rodenbusch, Paul R. Hernandez, Sarah Simmons et al. · 2016 · CBE—Life Sciences Education
National efforts to transform undergraduate biology education call for research experiences to be an integral component of learning for all students. Course-based undergraduate research experiences, or CUREs, have been championed for…
View details →Negative / Null Result ReportOpen accessMedicine
Cátia Laranjeira, Katarina Sandgren, Nicoletta Kessaris et al. · 2011 · Journal of Clinical Investigation
The enteric nervous system (ENS) in mammals forms from neural crest cells during embryogenesis and early postnatal life. Nevertheless, multipotent progenitors of the ENS can be identified in the adult intestine using clonal cultures and in…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Roland G. Fryer · 2011 · The Quarterly Journal of Economics
This article describes a series of school-based field experiments in over 200 urban schools across three cities designed to better understand the impact of financial incentives on student achievement. In Dallas, students were paid to read…
View details →Negative / Null Result ReportOpen accessMedicine
Suetonia C. Palmer, Dimitris Mavridis, Antonio Nicolucci et al. · 2016 · JAMA
IMPORTANCE: Numerous glucose-lowering drugs are used to treat type 2 diabetes. OBJECTIVE: To estimate the relative efficacy and safety associated with glucose-lowering drugs including insulin. DATA SOURCES: Cochrane Library Central…
View details →Negative / Null Result ReportBusiness, Management and Accounting
Nezih Altay, Angappa Gunasekaran, Rameshwar Dubey et al. · 2018 · Production Planning & Control
This study examines the effects of supply chain agility (SCAG) and supply chain resilience (SCRES) on performance under the moderating effect of organizational culture. We have used the dynamic capability view (DCV) to conceptualize our…
View details →Negative / Null Result ReportMathematics
Ian M. Lyons, Gavin R. Price, Anniek Vaessen et al. · 2014 · Developmental Science
Math relies on mastery and integration of a wide range of simpler numerical processes and concepts. Recent work has identified several numerical competencies that predict variation in math ability. We examined the unique relations between…
View details →Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance
Marcel Fafchamps, Bart Minten · 2012 · The World Bank Economic Review
This study estimates the benefits that Indian farmers derive from market and weather information delivered to their mobile phones by a commercial service called Reuters Market Light (RML). We conduct a controlled randomized experiment in…
View details →Negative / Null Result ReportEconomics, Econometrics and Finance
Bruno Crépon, Florencia Devoto, Esther Duflo et al. · 2015 · American Economic Journal Applied Economics
We report results from a randomized evaluation of a microcredit program introduced in rural areas of Morocco in 2006. Thirteen percent of the households in treatment villages took a loan, and none in control villages did. Among households…
View details →Negative / Null Result ReportMedicine
Hanne Vanheel, María Vicario, Tim Vanuytsel et al. · 2013 · Gut
OBJECTIVE: Functional dyspepsia (FD) is an extremely common functional gastrointestinal disorder, the pathophysiology of which is poorly understood. We hypothesised that impaired intestinal barrier function is involved in the onset and…
View details →Negative / Null Result ReportOpen accessEnvironmental Science
David Q. Rich, Howard M. Kipen, Wei Huang et al. · 2012 · JAMA
CONTEXT: Air pollution is a risk factor for cardiovascular diseases (CVD), but the underlying biological mechanisms are not well understood. OBJECTIVE: To determine whether markers related to CVD pathophysiological pathways (biomarkers for…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Alexandra C. Nica, Leopold Parts, Daniel Glass et al. · 2011 · PLoS Genetics
While there have been studies exploring regulatory variation in one or more tissues, the complexity of tissue-specificity in multiple primary tissues is not yet well understood. We explore in depth the role of cis-regulatory variation in three human tissues: lymphoblastoid cell lines (LCL), skin, and fat. The samples (156 LCL, 160 skin, 166 fat) were derived simultaneously from a subset of well-phenotyped healthy female twins of the MuTHER resource. We discover an abundance of cis-eQTLs in each tissue similar to previous estimates (858 or 4.7% of genes). In addition, we apply factor analysis (
View details →Negative / Null Result ReportOpen accessNeuroscience
Sruti Rayaprolu, Bianca Mullen, Matt Baker et al. · 2013 · Molecular Neurodegeneration
BACKGROUND: A rare variant in the Triggering Receptor Expressed on Myeloid cells 2 (TREM2) gene has been reported to be a genetic risk factor for Alzheimer's disease by two independent groups (Odds ratio between 2.9-4.5). Given the key role of TREM2 in the effective phagocytosis of apoptotic neuronal cells by microglia, we hypothesized that dysfunction of TREM2 may play a more generalized role in neurodegeneration. With this in mind we set out to assess the genetic association of the Alzheimer's disease-related risk variant in TREM2 (rs75932628, p.R47H) with other related neurodegenerative dis
View details →Negative / Null Result ReportEnvironmental Science
Chenxi Wu, Alison L. Spongberg, Jason D. Witter et al. · 2010 · Environmental Science & Technology
Many pharmaceuticals and personal care products (PPCPs) are commonly found in biosolids and effluents from wastewater treatment plants. Land application of these biosolids and the reclamation of treated wastewater can transfer those PPCPs…
View details →Negative / Null Result ReportOpen accessPhysics and Astronomy
Z. Arzoumanian, P. T. Baker, A. Brazier et al. · 2018 · The Astrophysical Journal
Abstract We search for an isotropic stochastic gravitational-wave background (GWB) in the newly released 11 year data set from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav). While we find no evidence for a…
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