keyword
MENU ▼
Read by QxMD icon Read
search

Biometric

keyword
https://www.readbyqxmd.com/read/29225616/multimodal-personal-verification-using-likelihood-ratio-for-the-match-score-fusion
#1
Long Binh Tran, Thai Hoang Le
In this paper, the authors present a novel personal verification system based on the likelihood ratio test for fusion of match scores from multiple biometric matchers (face, fingerprint, hand shape, and palm print). In the proposed system, multimodal features are extracted by Zernike Moment (ZM). After matching, the match scores from multiple biometric matchers are fused based on the likelihood ratio test. A finite Gaussian mixture model (GMM) is used for estimating the genuine and impostor densities of match scores for personal verification...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/29224085/aphasia-and-cognitive-impairment-decrease-the-reliability-of-rntms-language-mapping
#2
Vera Schwarzer, Ina Bährend, Tizian Rosenstock, Felix R Dreyer, Peter Vajkoczy, Thomas Picht
BACKGROUND: Navigated transcranial magnetic stimulation (nTMS) is a non-invasive mapping tool to locate functional areas of the brain. While gaining importance in the preoperative planning process in motor eloquent regions, its usefulness for reliably identifying language areas is still being discussed. The aim of this study was to identify biometric factors which might influence and therefore bias the results of repetitive nTMS (rnTMS) over cortex areas relevant for language. METHOD: We included data of 101 patients with language eloquent brain lesions who underwent preoperative rnTMS examination bihemispherically...
December 9, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29223229/comparison-of-a-new-scheimpflug-imaging-combined-with-partial-coherence-interferometry-biometer-and-a-low-coherence-reflectometry-biometer
#3
Ramón Ruiz-Mesa, Antonio Abengózar-Vela, María Ruiz-Santos
PURPOSE: To evaluate the repeatability of a new biometer using Scheimpflug technology combined with partial coherence interferometry (PCI) (Pentacam AXL) and its agreement with a device based on optical low-coherence reflectometry (OLCR), the Allegro Biograph. SETTING: Oftalvist Centro Integral Ocular Jerez, Jerez de la Frontera, Spain. DESIGN: Evaluation of a diagnostic test. METHODS: The mean keratometry (K), central corneal thickness (CCT), anterior chamber depth (ACD), and axial length (AL) were measured with the 2 devices 3 times by the same examiner in 2 groups (patients with cataract and patients without cataract)...
November 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29216774/chinese-fetal-biometry-reference-equations-and-comparison-with-charts-from-other-populations
#4
Yixiu Zhang, Hua Meng, Yuxin Jiang, Zhonghui Xu, Yunshu Ouyang, Shengli Li, Qian Chen, Qingqing Wu, Rui Li, Tong Ru, Aailu Cai, Xinlin Chen, Taizhu Yang, Ping Chen, Hongning Xie, Hong Lu, Qing Dai, Fen Dong, Meng Yang, Xiao Yang, Jia Lu, Jiawei Tian, Kun Sun, Hui Li
OBJECTIVE: This study aimed to construct new reference charts and equations for fetal biometry from Chinese fetuses at 15-40 weeks and to compare them with previous references. METHOD: This was a prospective, cross-sectional study of singleton pregnancies in patients with a confirmed gestational age who underwent ultrasound examinations between the 15th and 40th weeks of gestation. Each woman was selected only once for this study. Biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL) were recorded...
December 7, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29211810/heterogeneity-in-the-development-of-proactive-and-reactive-aggression-in-childhood-common-and-specific-genetic-environmental-factors
#5
Stéphane Paquin, Eric Lacourse, Mara Brendgen, Frank Vitaro, Ginette Dionne, Richard Ernest Tremblay, Michel Boivin
BACKGROUND: Few studies are grounded in a developmental framework to study proactive and reactive aggression. Furthermore, although distinctive correlates, predictors and outcomes have been highlighted, proactive and reactive aggression are substantially correlated. To our knowledge, no empirical study has examined the communality of genetic and environmental underpinning of the development of both subtypes of aggression. The current study investigated the communality and specificity of genetic-environmental factors related to heterogeneity in proactive and reactive aggression's development throughout childhood...
2017: PloS One
https://www.readbyqxmd.com/read/29211317/neurobiology-of-gender-identity-and-sexual-orientation
#6
REVIEW
Charles E Roselli
Sexual identity and sexual orientation are independent components of a person's sexual identity. These dimensions are most often in harmony with each other and with an individual's genital sex, but not always. This review discusses the relationship of sexual identity and sexual orientation to prenatal factors that act to shape the development of the brain and the expression of sexual behaviors in animals and humans. One major influence discussed relates to organizational effects that the early hormone environment exerts on both gender identity and sexual orientation...
December 6, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/29208808/intraocular-lens-calculations-in-atypical-eyes
#7
REVIEW
Aazim A Siddiqui, Uday Devgan
Cataract surgery is the most performed surgical procedure in the field of ophthalmology. The process of intraocular lens (IOL) calculations is a critical step to achieving successful outcomes. Many IOL formulae exist to guide surgeons through the difficult process of picking the most appropriate lens to achieve a certain target refraction. However, these formulae reach within 0.50 diopters of the target refraction only 75% of the time, leaving 25% of the eyes with a significant refractive surprise. A literature review was performed to investigate all the relevant published material on the history, progress, and recent advancements of IOL calculations...
December 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29207688/radiological-biometric-study-of-metatarsals-and-phalanges
#8
Shrish Patil, G H Hanumantharaya, Suresh P Desai, Madhumati Nidoni
Introduction: Several diseases affect the forefoot bones. Relative dimensions of the forefoot bones are important considerations for preoperative and postoperative assessment of surgeries. The choice of a particular surgery over another can also be made if the surgeon knows the length to which a bone needs to be lengthened or shortened in comparison to other bones of the forefoot. Aim: To measure the dimensions of the metatarsals and phalanges on standardized radiographs and to determine possible correlations amongst them...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29206188/lightweight-biometric-sensing-for-walker-classification-using-narrowband-rf-links
#9
Tong Liu, Zhuo-Qian Liang
This article proposes a lightweight biometric sensing system using ubiquitous narrowband radio frequency (RF) links for path-dependent walker classification. The fluctuated received signal strength (RSS) sequence generated by human motion is used for feature representation. To capture the most discriminative characteristics of individuals, a three-layer RF sensing network is organized for building multiple sampling links at the most common heights of upper limbs, thighs, and lower legs. The optimal parameters of sensing configuration, such as the height of link location and number of fused links, are investigated to improve sensory data distinctions among subjects, and the experimental results suggest that the synergistic sensing by using multiple links can contribute a better performance...
December 5, 2017: Sensors
https://www.readbyqxmd.com/read/29194804/the-use-of-ultrasonography-in-the-reproductive-evaluation-of-boars
#10
R O Pinho, B S Camilo, Dma Lima, Fac Villadiego, Jcm Vergara, H H Shiomi, R E Cardoso, P S Lopes, Sef Guimarães, J D Guimarães
The objective was to study the use of ultrasound as a complementary test in the breeding soundness evaluation in male pigs and study the pattern of echogenicity of the testicular parenchyma in boars of different racial groups. Twenty-six adult boars from four different racial groups were used, 10 from the Piau breed (group 1), four from the commercial and finishing group (group 2), six Pietrain breed (group 3) and six from the Duroc breed (group 4). All animals were evaluated for breeding soundness evaluation and the ultrasound examination of the testicles...
December 1, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29194459/correction-correction-the-world-health-organization-fetal-growth-charts-a-multinational-longitudinal-study-of-ultrasound-biometric-measurements-and-estimated-fetal-weight
#11
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pmed.1002284.].
April 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29193212/meta-analysis-for-the-comparison-of-two-diagnostic-tests-a-new-approach-based-on-copulas
#12
Annika Hoyer, Oliver Kuss
Meta-analysis of diagnostic studies is still field of ongoing biometrical research. Especially, clinical researchers call for methods that allow for a comparison of different diagnostic tests to a common gold standard. Focussing on two diagnostic tests, the main parameters of interest are differences of sensitivities and specificities (with their corresponding confidence intervals) between the two diagnostic tests while accounting for the various associations across the two tests and the single studies. Similar to our previous work using generalized linear mixed models to this task, we propose a model with a quadrivariate response consisting of the two sensitivities and the two specificities of both tests...
November 29, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/29190074/cnt-embedded-nanostructure-for-biometrics
#13
Juhyuk Park, Jae Ryoun Youn, Young Seok Song
Low electric energy loss is a very important problem to minimize the decay of transfered energy intensity due to impedance mismatch. This issue has been dealt with by adding an impedance matching layer at the interface between two media. A strategy was proposed to improve the charge transfer from human body to a biometric device by using an impedance matching nanostructure. Nanocomposite pattern arrays were fabricated with shape memory polymer (SMP) and carbon nanotubes (CNTs). The shape recovery ability of the nanopatterns could enhance durability and sustainability of the structure...
November 30, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29185835/biometric-differences-between-unilateral-chronic-primary-angle-closure-glaucoma-and-fellow-non-glaucomatous-eyes
#14
Wei Wang, Xinyi Li, Shida Chen, Wenbin Huang, Xiulan Zhang
PURPOSE: To compare biometric differences between eyes with unilateral chronic primary angle-closure glaucoma (PACG) and fellow non-glaucomatous eyes in the same patient. METHODS: Clinical data and imaging records of 17 patients with unilateral PACG were retrospectively reviewed. The fellow eyes with primary angle-closure (PAC) or primary angle-closure suspected (PACS) were grouped in Group 1. The PACG eyes were set as Group 2. The biometric parameters of both eyes were measured by IOL-Master, anterior segment optical coherence tomography (AS-OCT), and swept source OCT...
November 29, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29184569/the-seed-repair-response-during-germination-disclosing-correlations-between-dna-repair-antioxidant-response-and-chromatin-remodeling-in-medicago-truncatula
#15
Andrea Pagano, Susana de Sousa Araújo, Anca Macovei, Paola Leonetti, Alma Balestrazzi
This work provides novel insights into the effects caused by the histone deacetylase inhibitor trichostatin A (TSA) during Medicago truncatula seed germination, with emphasis on the seed repair response. Seeds treated with H2O and TSA (10 and 20 μM) were collected during imbibition (8 h) and at the radicle protrusion phase. Biometric data showed delayed germination and impaired seedling growth in TSA-treated samples. Comet assay, performed on radicles at the protrusion phase and 4-days old M. truncatula seedlings, revealed accumulation of DNA strand breaks upon exposure to TSA...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29181725/association-between-left-atrial-phasic-conduit-function-and-early-atrial-fibrillation-recurrence-in-patients-undergoing-electrical-cardioversion
#16
Anna Degiovanni, Enrico Boggio, Eleonora Prenna, Chiara Sartori, Federica De Vecchi, Paolo N Marino
BACKGROUND: Diastolic dysfunction promotes atrial fibrillation (AF) inducing left atrial (LA) remodeling, with chamber dilation and fibrosis. Predominance of LA phasic conduit (LAC) function should reflect not only chamber alterations but also underlying left ventricular (LV) filling impairment. Thus, LAC was tested as possible predictor of early AF relapse after electrical cardioversion (EC). METHODS: 96 consecutive patients, who underwent EC for persistent non-valvular AF, were prospectively enrolled...
November 27, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29177558/on-applicability-of-tunable-filter-bank-based-feature-for-ear-biometrics-a-study-from-constrained-to-unconstrained
#17
Debbrota Paul Chowdhury, Sambit Bakshi, Guodong Guo, Pankaj Kumar Sa
In this paper, an overall framework has been presented for person verification using ear biometric which uses tunable filter bank as local feature extractor. The tunable filter bank, based on a half-band polynomial of 14th order, extracts distinct features from ear images maintaining its frequency selectivity property. To advocate the applicability of tunable filter bank on ear biometrics, recognition test has been performed on available constrained databases like AMI, WPUT, IITD and unconstrained database like UERC...
November 27, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/29174436/reduced-frontal-grey-matter-life-history-of-aggression-and-underlying-genetic-influence
#18
Emil F Coccaro, Henk Cremers, Jennifer Fanning, Eryka Nosal, Royce Lee, Sarah Keedy, Kristen C Jacobson
Physically healthy, adult, same-sexed twins (n = 287) from a population-based twin cohort underwent high-resolution magnetic resonance imaging (MRI) to identify fronto-limbic brain regions significantly associated with lifetime history of aggression. MRI scans used a 3D magnetization-prepared rapid acquisition gradient-echo (MP-RAGE) sequence, for voxel-based morphometry (VBM) and history of aggressive behavior was assessed using the Life History of Aggression measure. Aggression had modest, inverse associations with grey matter volume (GMV) in medial prefrontal cortex (mPFC, b = -0...
November 13, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29171178/hiv-viral-load-monitoring-among-key-populations-in-low-and-middle-income-countries-challenges-and-opportunities
#19
Sheree R Schwartz, Matthew M Kavanagh, Jeremy Sugarman, Sunil S Solomon, Illiassou M Njindam, Kevin Rebe, Thomas C Quinn, Coumba Toure-Kane, Chris Beyrer, Stefan Baral
INTRODUCTION: Key populations bear a disproportionate HIV burden and have substantial unmet treatment needs. Routine viral load monitoring represents the gold standard for assessing treatment response at the individual and programme levels; at the population-level, community viral load is a metric of HIV programme effectiveness and can identify "hotspots" of HIV transmission. Nevertheless, there are specific implementation and ethical challenges to effectively operationalize and meaningfully interpret viral load data at the community level among these often marginalized populations...
November 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/29170932/estimating-cross-quantile-residual-ratio-with-left-truncated-semi-competing-risks-data
#20
Jing Yang, Limin Peng
A semi-competing risks setting often arises in biomedical studies, involving both a nonterminal event and a terminal event. Cross quantile residual ratio (Yang and Peng in Biometrics 72:770-779, 2016) offers a flexible and robust perspective to study the dependency between the nonterminal and the terminal events which can shed useful scientific insight. In this paper, we propose a new nonparametric estimator of this dependence measure with left truncated semi-competing risks data. The new estimator overcomes the limitation of the existing estimator that is resulted from demanding a strong assumption on the truncation mechanism...
November 23, 2017: Lifetime Data Analysis
keyword
keyword
40219
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"