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Applied behavior analysys, behavior analysys

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https://www.readbyqxmd.com/read/28944390/a-topological-study-of-chemical-bonds-under-pressure-solid-hydrogen-as-a-model-case
#1
Vanessa Riffet, Vanessa Labet, Julia Contreras-García
It is now well recognized that a fundamental understanding of the rules that govern chemistry under pressure is still lacking. Hydrogen being the "simplest" element as well as a central core to high pressure physics, we undertake a general study of the changes in the chemical bonding under pressure. We start from a simple trimer unit that has been found in high pressure phases, whose behavior has been found to reveal the basics of hydrogen polymerization under pressure. Making use of bond analysis tools, mainly the NCI (noncovalent interactions) index, we show that polymerization takes place in three steps: dipolar attraction, repulsion and bond formation...
September 25, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28944022/analyzing-time-ordered-event-data-with-missed-observations
#2
Adriaan M Dokter, E Emiel van Loon, Wimke Fokkema, Thomas K Lameris, Bart A Nolet, Henk P van der Jeugd
A common problem with observational datasets is that not all events of interest may be detected. For example, observing animals in the wild can difficult when animals move, hide, or cannot be closely approached. We consider time series of events recorded in conditions where events are occasionally missed by observers or observational devices. These time series are not restricted to behavioral protocols, but can be any cyclic or recurring process where discrete outcomes are observed. Undetected events cause biased inferences on the process of interest, and statistical analyses are needed that can identify and correct the compromised detection processes...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28943662/causal-mediation-analysis-for-the-cox-proportional-hazards-model-with-a-smooth-baseline-hazard-estimator
#3
Wei Wang, Jeffrey M Albert
An important problem within the social, behavioral, and health sciences is how to partition an exposure effect (e.g. treatment or risk factor) among specific pathway effects and to quantify the importance of each pathway. Mediation analysis based on the potential outcomes framework is an important tool to address this problem and we consider the estimation of mediation effects for the proportional hazards model in this paper. We give precise definitions of the total effect, natural indirect effect, and natural direct effect in terms of the survival probability, hazard function, and restricted mean survival time within the standard two-stage mediation framework...
August 2017: Journal of the Royal Statistical Society. Series C, Applied Statistics
https://www.readbyqxmd.com/read/28942043/modeling-pedestrian-crossing-speed-profiles-considering-speed-change-behavior-for-the-safety-assessment-of-signalized-intersections
#4
Miho Iryo-Asano, Wael K M Alhajyaseen
Pedestrian safety is one of the most challenging issues in road networks. Understanding how pedestrians maneuver across an intersection is the key to applying countermeasures against traffic crashes. It is known that the behaviors of pedestrians at signalized crosswalks are significantly different from those in ordinary walking spaces, and they are highly influenced by signal indication, potential conflicts with vehicles, and intersection geometries. One of the most important characteristics of pedestrian behavior at crosswalks is the possible sudden speed change while crossing...
September 21, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28939202/neural-correlates-of-reconfiguration-failure-reveal-the-time-course-of-task-set-reconfiguration
#5
Marco Steinhauser, Martin E Maier, Benjamin Ernst
The ability to actively prepare for new tasks is crucial for achieving goal-directed behavior. The task-switching paradigm is frequently used to investigate this task-set reconfiguration. In the present study, we adopted a novel approach to identify a neural signature of reconfiguration in event-related potentials. Our method was to isolate neural correlates of reconfiguration failure and to use these correlates to reveal the time course of reconfiguration in task switches and task repetitions. We employed a task-switching paradigm in which two types of errors could be distinguished: task errors (the incorrect task was applied) and response errors (an incorrect response for the correct task was provided)...
September 19, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28936120/knowledge-beliefs-and-practices-regarding-osteoporosis-among-female-medical-school-entrants-in-pakistan
#6
Muhammad Bilal, Abdul Haseeb, Aleena Zehra Merchant, Abdur Rehman, Mohammad Hussham Arshad, Maarij Malik, Asad Hammad Ur Rehman, Pallavi Rani, Emaan Farhan, Taha S Rehman, Umer Sultan Shamsi, Sadia Aminah
BACKGROUND: Osteoporosis is a growing health problem around the world. The increasing incidence of osteoporotic fractures coupled with the lack of knowledge about the disease in the general community means that the disease is continuously increasing the burden on health sector and the general population. The purpose of the study is to assess knowledge, attitudes and practices about osteoporosis among female medical school entrants in Karachi. METHODS: This is a descriptive cross-sectional study conducted amongst 400 female medical school entrants of DOW University of Health Sciences (DUHS) and Jinnah Sindh Medical University (JSMU)...
2017: Asia Pacific Family Medicine
https://www.readbyqxmd.com/read/28936039/comparative-three-dimensional-finite-element-analysis-of-implant-supported-fixed-complete-arch-mandibular-prostheses-in-two-materials
#7
João Paulo Mendes Tribst, Dayana Campanelli de Morais, Alexandre Abhdala Alonso, Amanda Maria de Oliveira Dal Piva, Alexandre Luis Souto Borges
BACKGROUND: The increase of requests for implant-supported prosthesis (ISP) with zirconia as infrastructure has attracted a lot of attention due to its esthetics, biocompatibility, and survival rate similar to metallic infrastructure. The aim of this study was to evaluate the influence of two different framework materials on stress distribution over a bone tissue-simulating material. MATERIALS AND METHODS: Two ISP were modeled and divided into two infrastructure materials: titanium (Ti) and zirconia...
July 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28935424/temporal-remodeling-of-pial-collaterals-and-functional-deficits-in-a-murine-model-of-ischemic-stroke
#8
Benjamin Okyere, Miranda Creasey, Yeonwoo Lebovitz, Michelle H Theus
BACKGROUND: Leptomeningeal anastomoses play a critical role in regulating reperfusion following cerebrovascular obstruction; however, methods to evaluate their temporospatial remodeling remains under investigation. NEW METHOD: We combined arteriole-specific vessel painting with histological evaluation to assess the density and diameter of inter-collateral vessels between the middle cerebral artery and anterior cerebral artery (MCA-ACA) or posterior cerebral artery (MCA-PCA) in a murine model of permanent middle cerebral artery occlusion (pMCAO)...
September 18, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28933829/synthesis-crystal-structure-and-magnetic-properties-of-the-highly-frustrated-orthorhombic-li4mgreo6
#9
JoAnna Milam-Guerrero, Charles J Bloed, Phuong-Hieu T Nguyen, Gia T Tran, William P Martin, Demetrios V Papakostas, Jefferson Toro, Murray N Wilson, Jeremy P Carlo, Graeme M Luke, Brent C Melot, Jiyeong Gu, Shahab Derakhshan
In an effort to understand the structure-property relationship in magnetically frustrated systems, an orthorhombic analog of the S = 1/2 Re-based oxide Li4MgReO6 has been successfully synthesized and its physical properties were investigated. Li4MgReO6 had been previously synthesized in a monoclinic system in an ordered NaCl structure type. That system was shown to exhibit spin glass behavior below ∼12 K. The crystal structure of the latter phase was determined using powder X-ray diffraction data. A structural model was refined in the orthorhombic Fddd space group that resulted in cell dimensions of a = 5...
September 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28929839/capturing-ecology-in-modeling-approaches-applied-to-environmental-risk-assessment-of-endocrine-active-chemicals-in-fish
#10
Kate S Mintram, A Ross Brown, Samuel K Maynard, Pernille Thorbek, Charles R Tyler
Endocrine active chemicals (EACs) are widespread in freshwater environments and both laboratory and field based studies have shown reproductive effects in fish at environmentally relevant exposures. Environmental risk assessment (ERA) seeks to protect wildlife populations and prospective assessments rely on extrapolation from individual-level effects established for laboratory fish species to populations of wild fish using arbitrary safety factors. Population susceptibility to chemical effects, however, depends on exposure risk, physiological susceptibility, and population resilience, each of which can differ widely between fish species...
September 20, 2017: Critical Reviews in Toxicology
https://www.readbyqxmd.com/read/28927730/decreased-structural-connectivity-and-resting-state-brain-activity-in-the-lateral-occipital-cortex-is-associated-with-social-communication-deficits-in-boys-with-autism-spectrum-disorder
#11
REVIEW
Minyoung Jung, Yiheng Tu, Courtney Amanda Lang, Ana Ortiz, Joel Park, Kristen Jorgenson, Xue-Jun Kong, Jian Kong
Autism spectrum disorder (ASD) is a prevalent neurodevelopmental disorder characterized by atypical social communication and repetitive behaviors. In this study, we applied a multimodal approach to investigate brain structural connectivity, resting state activity, and surface area and their associations with the core symptoms of ASD. Data from forty boys with ASD (mean age, 11.5 years; age range, 5.5-19.5) and forty boys with typical development (TD) (mean age, 12.3; age range, 5.8-19.7) were extracted from the Autism Brain Imaging Data Exchange II (ABIDE II) for data analysis...
September 16, 2017: NeuroImage
https://www.readbyqxmd.com/read/28927539/transient-and-stable-vector-transfection-pitfalls-off-target-effects-artifacts
#12
REVIEW
Aleksei A Stepanenko, Henry H Heng
Transient and stable vector transfections have played important roles in illustrating the function of specific genes/proteins. The general assumption is that such a platform could effectively link a given gene/protein to gained phenotypes, revealing the mechanism of how a gene works. However, in reality, increased studies have surprisingly noticed some unexpected results. In this review, we demonstrate that an assumption that empty vector-transfected cells preserve the cytogenetic and phenotypic characteristics, and represent the adequate control in transfection experiments is not universally valid...
July 2017: Mutation Research
https://www.readbyqxmd.com/read/28925999/an-evaluation-of-the-effects-of-intensity-and-duration-on-outcomes-across-treatment-domains-for-children-with-autism-spectrum-disorder
#13
E Linstead, D R Dixon, E Hong, C O Burns, R French, M N Novack, D Granpeesheh
Applied behavior analysis (ABA) is considered an effective treatment for individuals with autism spectrum disorder (ASD), and many researchers have further investigated factors associated with treatment outcomes. However, few studies have focused on whether treatment intensity and duration have differential influences on separate skills. The aim of the current study was to investigate how treatment intensity and duration impact learning across different treatment domains, including academic, adaptive, cognitive, executive function, language, motor, play, and social...
September 19, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28925725/light-sensitive-drugs-in-topical-formulations-stability-indicating-methods-and-photostabilization-strategies
#14
Giuseppina Ioele, Lorena Tavano, Michele De Luca, Rita Muzzalupo, Annalisa Mancuso, Gaetano Ragno
Photostability tests applied on commercial specialties for topical use have demonstrated a greater vulnerability of several drugs, due to greater exposure to light than other pharmaceutical forms. Photodegradation of a drug can considerably modify its pharmacokinetic behavior by varying the therapeutic index. The evaluation of the degradation profile of a drug, according to the ICH rules, is of primary importance in developing an appropriate topical formulation. Advanced strategies have been proposed to increase the protection from the light of the photolabile drugs...
September 19, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28923933/longitudinal-identification-of-clinically-distinct-neurophenotypes-in-young-children-with-fragile-x-syndrome
#15
Jennifer L Bruno, David Romano, Paul Mazaika, Amy A Lightbody, Heather Cody Hazlett, Joseph Piven, Allan L Reiss
Fragile X syndrome (FXS), due to mutations of the FMR1 gene, is the most common known inherited cause of developmental disability. The cognitive, behavioral, and neurological phenotypes observed in affected individuals can vary considerably, making it difficult to predict outcomes and determine the need for interventions. We sought to examine early structural brain growth as a potential marker for identification of clinically meaningful subgroups. Participants included 42 very young boys with FXS who completed a T1-weighted anatomical MRI and cognitive/behavioral assessment at two longitudinal time points, with mean ages of 2...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28923547/how-oral-environment-simulation-affects-ceramic-failure-behavior
#16
Ediléia Lodi, Kátia R Weber, Paula Benetti, Pedro H Corazza, Álvaro Della Bona, Márcia Borba
STATEMENT OF PROBLEM: Investigating the mechanical behavior of ceramics in a clinically simulated scenario contributes to the development of new and tougher materials, improving the clinical performance of restorations. The optimal in vitro environment for testing is unclear. PURPOSE: The purpose of this in vitro study was to investigate the failure behavior of a leucite-reinforced glass-ceramic under compression loading and fatigue in different simulated oral environment conditions...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28923160/applying-the-neurodynamics-of-emotional-circular-causalities-in-psychosocial-and-cognitive-therapy-using-multi-sensory-environments-an-orbde-case-study-analysis
#17
Janice Ryan
This exploratory, evidence-based practice research study focuses on presenting a plausible mesoscopic brain dynamics hypothesis for the benefits of treating clients with psychosocial and cognitive challenges using a mindful therapeutic approach and multi-sensory environments. After an extensive neuroscientific review of the therapeutic benefits of mindfulness, a multi-sensory environment is presented as a window of therapeutic opportunity to more quickly and efficiently facilitate the neurobiological experience of becoming more mindful or conscious of self and environment...
October 2017: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/28922928/differential-reinforcement-of-low-rate-schedules-reduce-severe-problem-behavior
#18
Andrew C Bonner, John C Borrero
Differential-reinforcement-of-low-rate (DRL) schedules are reinforcement contingencies designed to reduce response rates. A common variation of the DRL arrangement is known as full-session DRL ( f-DRL), in which a reinforcer is presented at the end of an interval if the response rate during that interval is below a predetermined criterion. Prior human operant research involving arbitrary mouse clicks has shown that the f-DRL is likely to reduce target responding to near zero rates. Similarly, applied research has shown that the f-DRL is likely to reduce minimally disruptive classroom behavior...
September 1, 2017: Behavior Modification
https://www.readbyqxmd.com/read/28922002/behavioral-activation-strategies-for-major-depression-in-transdiagnostic-cognitive-behavioral-therapy-an-evidence-based-case-study
#19
Todd J Farchione, James F Boswell, Julianne G Wilner
Behavioral activation (BA) is a treatment approach that uses functional analysis and context-dependent strategies to enhance environmental positive reinforcement for adaptive, healthy behavior, and decrease behavioral avoidance. BA has gained considerable support for the treatment of depression and can be broadly applied across a wide range of settings and clinical populations. In this article, we provide a brief description of BA as a therapeutic behavioral strategy for depression and present a clinical case example illustrating the integration of BA with other components of a transdiagnostic cognitive-behavioral treatment for emotional disorders...
September 2017: Psychotherapy
https://www.readbyqxmd.com/read/28921735/three-shades-of-grey-detecting-brain-abnormalities-in-children-with-autism-by-using-source-voxel-and-surface-based-morphometry
#20
Edoardo Pappaianni, Roma Siugzdaite, Sofie Vettori, Paola Venuti, Remo Job, Alessandro Grecucci
Autistic spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social interactions, communication and stereotyped behavior. Recent evidence from neuroimaging supports the hypothesis that ASD deficits in adults may be related to abnormalities in a specific frontal-temporal network (Autism-specific Structural Network, ASN). To see whether these results extend to younger children and to better characterize these abnormalities, we applied three morphometric methods on brain grey matter of children with and without ASD...
September 16, 2017: European Journal of Neuroscience
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