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https://www.readbyqxmd.com/read/28641253/a-closed-form-solution-to-single-underwater-camera-calibration-using-triple-wavelength-dispersion-and-its-application-to-single-camera-3d-reconstruction
#1
Xida Chen, Yee-Hong Yang
In this paper, we present a new method to estimate the housing parameters of an underwater camera by making full use of triple wavelength dispersion. Our method is based on an important finding that there is a closed-form solution to the distance from the camera center to the refractive interface once the refractive normal is known. The correctness of this finding is mathematically proved in this paper. To our best knowledge, such a finding has not been studied or reported, and hence is never proved theoretically...
June 16, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28640818/ankylosing-spondylitis-patients-at-risk-of-poor-radiographic-outcome-show-diminishing-spinal-radiographic-progression-during-long-term-treatment-with-tnf-%C3%AE-inhibitors
#2
Fiona Maas, Suzanne Arends, Freke R Wink, Reinhard Bos, Hendrika Bootsma, Elisabeth Brouwer, Anneke Spoorenberg
OBJECTIVE: To investigate the influence of patient characteristics on the course of spinal radiographic progression in a large prospective longitudinal cohort study of ankylosing spondylitis (AS) patients treated long-term with TNF-α inhibitors. METHODS: Consecutive patients from the Groningen Leeuwarden AS (GLAS) cohort starting TNF-α inhibitors with spinal radiographs at least available at baseline and 6 years of follow-up were included. Radiographs were scored using mSASSS by two independent readers...
2017: PloS One
https://www.readbyqxmd.com/read/28637294/over-time-impacts-of-pictorial-health-warning-labels-and-their-differences-across-smoker-subgroups-results-from-adult-smokers-in-canada-and-australia
#3
Kamala Swayampakala, James F Thrasher, Hua-Hie Yong, Gera E Nagelhout, Lin Li, Ron Borland, David Hammond, Richard J O'Connor, James W Hardin
Introduction: This study examines patterns of change in different smoker subgroups' responses to new pictorial health warning labels (HWLs) over the initial, two year post-implementation period in Canada, where HWLs include package inserts with cessation messages, and Australia, where "plain" packaging (i.e., prohibition of brand imagery) was also implemented. Methods: Data were collected from online consumer panels in Canada (nsmokers=3,153; nobservations=5,826) and Australia (nsmokers=2,699; nobservations=5,818) from September 2012 to September 2014, with approximately 1,000 adult smokers surveyed in each country every four months, using replenishment to maintain sample size...
June 16, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28635364/the-impact-of-motivational-interviewing-on-behavior-stages-of-nulliparous-pregnant-women-preparing-for-childbirth-a-randomized-clinical-trial
#4
Masoumeh Rasouli, Seyed Abbas Mousavi, Ahmad Khosravi, Afsaneh Keramat, Ensieh Fooladi, Giti Atashsokhan
OBJECTIVE: To examine the effectiveness of motivational interviewing (MI) on the stages of behavior change among nulliparous pregnant women who were preparing for childbirth. METHODS: In this randomized clinical trial, 234 pregnant women were studied in two intervention groups (MI and lecture), and one control group at three stages. In weeks 16-19 of pregnancy, two counseling sessions were held for the MI group, and one lecturing session was held for the lecture group...
June 21, 2017: Journal of Psychosomatic Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28633998/changes-in-risk-behaviours-during-and-following-treatment-for-hepatitis-c-virus-infection-among-people-who-inject-drugs-the-activate-study
#5
Håvard Midgard, Behzad Hajarizadeh, Evan B Cunningham, Brian Conway, Markus Backmund, Philip Bruggmann, Julie Bruneau, Stefan Bourgeois, Adrian Dunlop, Graham R Foster, Margaret Hellard, Geert Robaeys, Maria C Thurnheer, Martin Weltman, Janaki Amin, Philippa S Marks, Sophie Quiene, Gregory J Dore, Olav Dalgard, Jason Grebely
BACKGROUND: The risk of hepatitis C virus (HCV) reinfection due to continued injecting risk behaviours might remain a barrier to HCV treatment among people who inject drugs. We aimed to evaluate changes in risk behaviours during and following HCV treatment among people with ongoing injecting drug use or receiving opioid substitution treatment (OST). METHODS: ACTIVATE was an international multicentre clinical trial conducted between 2012 and 2014. Participants with HCV genotypes 2/3 infection were treated with peg-interferon/ribavirin for 12 or 24 weeks and completed a self-administered behavioural questionnaire at each study visit...
June 17, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28633558/an-introduction-to-bayesian-statistics-in-health-psychology
#6
Sarah Depaoli, Holly M Rus, James P Clifton, Rens van de Schoot, Jitske Tiemensma
The aim of the current article is to provide a brief introduction to Bayesian statistics within the field of Health Psychology. Bayesian methods are increasing in prevalence in applied fields, and they have been shown in simulation research to improve the estimation accuracy of structural equation models, latent growth curve (and mixture) models, and hierarchical linear models. Likewise, Bayesian methods can be used with small sample sizes since they do not rely on large sample theory. In this article, we discuss several important components of Bayesian statistics as they relate to health-based inquiries...
June 20, 2017: Health Psychology Review
https://www.readbyqxmd.com/read/28633395/is-sarcopenia-associated-with-depression-a-systematic-review-and-meta-analysis-of-observational-studies
#7
Ke-Vin Chang, Tsai-Hsuan Hsu, Wei-Ting Wu, Kuo-Chin Huang, Der-Sheng Han
Objectives: to explore whether sarcopenia is associated with depression. Design: electronic literature databases from PubMed, Scopus, Embase and Google Scholar were searched. A systematic review and meta-analysis of observational studies was conducted. Setting: community and outpatient clinic. Participants: people with and without diagnoses of sarcopenia. Measurements: outcome measures of depression...
June 14, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28633171/examining-accuracy-of-self-assessment-of-in-training-examination-performance-in-a-context-of-guided-self-assessment
#8
Oksana Babenko, Denise Campbell-Scherer, Shirley Schipper, John Chmelicek, Tanya Barber, Kimberley Duerksen, Shelley Ross
BACKGROUND AND OBJECTIVES: In our family medicine residency program, we have established a culture of guided self-assessment through a systematic approach of direct observation of residents and documentation of formative feedback. We have observed that our residents have become more accurate in self-assessing their clinical performance. The objective of this study was to examine whether this improved accuracy extended to residents' self-assessment of their medical knowledge and clinical reasoning on the In-Training Examination (ITE)...
June 2017: Family Medicine
https://www.readbyqxmd.com/read/28631484/ocular-pharmacokinetics-of-therapeutic-antibodies-given-by-intravitreal-injection-estimation-of-retinal-permeabilities-using-a-3-compartment-semi-mechanistic-model
#9
Laurence A Hutton-Smith, Eamonn A Gaffney, Helen M Byrne, Philip K Maini, Kapil Gadkar, Norman Alan Mazer
Intravitreally (IVT) injected macromolecules for the treatment of age-related macular degeneration must permeate through the inner limiting membrane (ILM) into the retina and through the retinal pigment epithelium (RPE) to enter the choroid. A quantitative understanding of intraocular transport mechanisms, elimination pathways and the effect of molecular size, is currently incomplete. We present a semi-mechanistic, 3-compartment (retina, vitreous and aqueous) pharmacokinetic (PK) model, expressed using linear ordinary differential equations (ODEs), to describe the molecular concentrations following a single IVT injection...
June 20, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28631123/modeling-solubility-of-co2-hydrocarbon-gas-in-ionic-liquid-emim-fap-using-aspen-plus-simulations
#10
Bishwadeep Bagchi, Sushmita Sati, Vidyasagar Shilapuram
The Peng-Robinson equation of state with quadratic van der Waals (vdW) mixing rule model was chosen to perform the thermodynamic calculations in Flash3 column of Aspen Plus to predict the solubility of CO2 or any one of the hydrocarbons (HCs) among methane, ethane, propane, and butane in an ionic liquid 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([emim][FAP]). Bubble point pressure, solubility, bubble point temperature, fugacity, and partial molar volume at infinite dilution were obtained from the simulations, and enthalpy of absorption, Gibbs free energy of solvation, and entropy change of absorption were estimated by thermodynamic relations...
June 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28630571/predictive-variables-of-half-marathon-performance-for-male-runners
#11
Josué Gómez-Molina, Ana Ogueta-Alday, Jesus Camara, Christoper Stickley, José A Rodríguez-Marroyo, Juan García-López
The aims of this study were to establish and validate various predictive equations of half-marathon performance. Seventy-eight half-marathon male runners participated in two different phases. Phase 1 (n = 48) was used to establish the equations for estimating half-marathon performance, and Phase 2 (n = 30) to validate these equations. Apart from half-marathon performance, training-related and anthropometric variables were recorded, and an incremental test on a treadmill was performed, in which physiological (VO2max, speed at the anaerobic threshold, peak speed) and biomechanical variables (contact and flight times, step length and step rate) were registered...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28629568/repeatability-of-estimated-fetal-weight-comparison-between-mr-imaging-versus-2d-ultrasound-in-at-and-near-term-patients
#12
Caroline Kadji, Margaux F Camus, Elisa Bevilacqua, Mieke M Cannie, Teresa Cos Sanchez, Jacques C Jani
INTRODUCTION: Our aim was to evaluate the intra- and inter-observer variability and the impact of operator experience on the estimation of fetal weight (EFW) as measured by 2-dimensional ultrasound (2D-US) and magnetic resonance (MR) imaging. MATERIAL AND METHODS: We estimated fetal weight in 46 singleton pregnancies at 35.6-41.4 weeks gestation using 2D-US according to the Hadlock formula and using MR imaging according to the equation developed by Baker. Each examination was performed twice, once by an inexperienced operator and once by an experienced operator...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28629141/graph-based-cooperative-localization-using-symmetric-measurement-equations
#13
Dhiraj Gulati, Feihu Zhang, Daniel Clarke, Alois Knoll
Precise localization is a key requirement for the success of highly assisted or autonomous vehicles. The diminishing cost of hardware has resulted in a proliferation of the number of sensors in the environment. Cooperative localization (CL) presents itself as a feasible and effective solution for localizing the ego-vehicle and its neighboring vehicles. However, one of the major challenges to fully realize the effective use of infrastructure sensors for jointly estimating the state of a vehicle in cooperative vehicle-infrastructure localization is an effective data association...
June 17, 2017: Sensors
https://www.readbyqxmd.com/read/28628663/survival-and-medical-utilization-of-children-and-adolescents-with-prolonged-ventilator-dependent-and-associated-factors
#14
Szu-Chi Pai, Pei-Tseng Kung, Wen-Yu Chou, Tsunghuai Kuo, Wen-Chen Tsai
Over the course of a year, more than 20,000 patients in Taiwan require prolonged mechanical ventilation (PMV). Data from the National Health Insurance Research Database for patients between 2005 and 2011 were used to conduct a retrospective analysis on ventilator dependence. The study subjects were PMV patients aged <17 years in Taiwan. A multiple regression model employing general estimating equations was applied to investigate the factors affecting the use of medical resources by children and adolescent PMV patients...
2017: PloS One
https://www.readbyqxmd.com/read/28628569/estimated-blood-loss-in-the-equation-of-the-beholder
#15
Jonathan P Wanderer, Naveen Nathan
No abstract text is available yet for this article.
July 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28627225/the-relationships-between-bnp-and-neurocardiac-injury-severity-noninvasive-cardiac-output-and-outcomes-after-aneurysmal-subarachnoid-hemorrhage
#16
Amber McAteer, Marilyn Hravnak, Yuefang Chang, Elizabeth A Crago, Matthew J Gallek, Khalil M Yousef
INTRODUCTION: Neurocardiac injury, a type of myocardial dysfunction associated with neurological insult to the brain, occurs in 31-48% of aneurysmal subarachnoid hemorrhage (aSAH) patients. Cardiac troponin I (cTnI) is commonly used to diagnose neurocardiac injury. Brain natriuretic peptide (BNP), another cardiac marker, is more often used to evaluate degree of heart failure. The purpose of this study was to examine the relationships between BNP and (a) neurocardiac injury severity according to cTnI, (b) noninvasive continuous cardiac output (NCCO), and (c) outcomes in aSAH patients...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28626803/estimation-of-insulin-secretion-glucose-uptake-by-tissues-and-liver-handling-of-glucose-using-a-mathematical-model-of-glucose-insulin-homeostasis-in-lean-and-obese-mice
#17
Michael Brenner, Sakineh Esmaeili Mohsen Abadi, Ramin Balouchzadeh, H Felix Lee, Hoo Sang Ko, Michael Johns, Nehal Malik, Joshua J Lee, Guim Kwon
Destruction of the insulin-producing β-cells is the key determinant of diabetes mellitus regardless of their types. Due to their anatomical location within the islets of Langerhans scattered throughout the pancreas, it is difficult to monitor β-cell function and mass clinically. To this end, we propose to use a mathematical model of glucose-insulin homeostasis to estimate insulin secretion, glucose uptake by tissues, and hepatic handling of glucose. We applied the mathematical model by Lombarte et al. (2013) to compare various rate constants representing glucose-insulin homeostasis between lean (11% fat)- and high fat diet (HFD; 45% fat)-fed mice...
June 2017: Heliyon
https://www.readbyqxmd.com/read/28626779/optical-coherence-tomography-and-visual-evoked-potentials-in-pediatric-ms
#18
Amy T Waldman, Grant T Liu, Amy M Lavery, Geraldine Liu, William Gaetz, Tomas S Aleman, Brenda L Banwell
OBJECTIVE: To determine the relative ability of optical coherence tomography (OCT) and pattern-reversal visual evoked potentials (pVEPs) to detect visual pathway involvement in pediatric-onset MS. METHODS: Pediatric-onset MS participants (onset <18 years) and healthy controls (HCs) underwent OCT (Cirrus HD-OCT) and pVEPs. Retinal nerve fiber layer (RNFL), ganglion cell layer to inner plexiform layer (GCL-IPL), and P100 pVEP latency were measured. Generalized estimating equation models were used to compare the groups, adjusting for age and intereye correlations...
July 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28626086/nursing-skill-mix-in-european-hospitals-cross-sectional-study-of-the-association-with-mortality-patient-ratings-and-quality-of-care
#19
Linda H Aiken, Douglas Sloane, Peter Griffiths, Anne Marie Rafferty, Luk Bruyneel, Matthew McHugh, Claudia B Maier, Teresa Moreno-Casbas, Jane E Ball, Dietmar Ausserhofer, Walter Sermeus
OBJECTIVES: To determine the association of hospital nursing skill mix with patient mortality, patient ratings of their care and indicators of quality of care. DESIGN: Cross-sectional patient discharge data, hospital characteristics and nurse and patient survey data were merged and analysed using generalised estimating equations (GEE) and logistic regression models. SETTING: Adult acute care hospitals in Belgium, England, Finland, Ireland, Spain and Switzerland...
July 2017: BMJ Quality & Safety
https://www.readbyqxmd.com/read/28626049/dose-dependent-effect-of-statin-pretreatment-on-preventing-the-periprocedural-complications-of-carotid-artery-stenting
#20
Jeong-Ho Hong, Sung-Il Sohn, Jaehyuk Kwak, Joonsang Yoo, Hyuk Won Chang, O-Ki Kwon, Cheolkyu Jung, Inyoung Chung, Hee-Joon Bae, Ji Sung Lee, Moon-Ku Han
BACKGROUND AND PURPOSE: We investigated whether statin pretreatment can dose dependently reduce periprocedural complications in patients undergoing carotid artery stenting because of symptomatic carotid artery stenosis. METHODS: We enrolled a consecutive series of 397 symptomatic carotid artery stenosis (≥50% stenosis on conventional angiography) treated with carotid artery stenting at 2 tertiary university hospitals over a decade. Definition of periprocedural complications included any stroke, myocardial infarction, and death within 1 month after or during the procedure...
June 16, 2017: Stroke; a Journal of Cerebral Circulation
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