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Video analysis

Pengfei Fan, Yang Liu, Zhechun Zhang, Chao Zhao, Cheng Li, Wulin Liu, Zhijin Liu, Ming Li
The white-cheeked macaque Macaca leucogenys is a recently described species that was only diagnosed based on photos, without any specimen measurements or molecular genetic diagnosis. Using extracted DNA from four newly collected skin specimens, we studied the genetic diversity and phylogenetic position of M. leucogenys using multilocus sequence data, including mitochondrial and Y chromosomal genes. Skin measurements of four individuals showed that the white-cheeked macaque is robust and larger than M. assamensis but is similar in body size to M...
October 18, 2016: Molecular Phylogenetics and Evolution
Rajani Shah
BACKGROUND: Child delivery in a health facility is important to reduce maternal mortality. Bypassing nearby birthing facility to deliver at a hospital is common in developing countries including Nepal. Very little is known about the extent and determinants of bypassing the birthing centres in Nepal. This study measures the status of bypassing, characteristics of bypassers and their reasons for bypassing. METHODS: A community-based cross-sectional study was carried out in six rural village development committees of Chitwan district of Nepal...
October 21, 2016: BMC Health Services Research
Wenyan Ci, Yingping Huang
Visual odometry estimates the ego-motion of an agent (e.g., vehicle and robot) using image information and is a key component for autonomous vehicles and robotics. This paper proposes a robust and precise method for estimating the 6-DoF ego-motion, using a stereo rig with optical flow analysis. An objective function fitted with a set of feature points is created by establishing the mathematical relationship between optical flow, depth and camera ego-motion parameters through the camera's 3-dimensional motion and planar imaging model...
October 17, 2016: Sensors
David P Seamans, Boshra F Louka, F David Fortuin, Bhavesh M Patel, John P Sweeney, Louis A Lanza, Patrick A DeValeria, Kim M Ezrre, Harish Ramakrishna
BACKGROUND: The surgical and procedural specialties are continually evolving their methods to include more complex and technically difficult cases. These cases can be longer and incorporate multiple teams in a different model of operating room synergy. Patients are frequently older, with comorbidities adding to the complexity of these cases. Recording of this environment has become more feasible recently with advancement in video and audio capture systems often used in the simulation realm...
October 2016: Annals of Cardiac Anaesthesia
Yanjiao Zhang, Yushun Gao
BACKGROUND: Lung cancer is a malignancy with high morbidity and mortality rates worldwide. Surgery is the preferred treatment for non-small cell lung cancer. This study aims to investigate the effects of video-assisted thoracoscopic surgery (VATS) lobectomy, VATS segmentectomy, and open thoracotomy on pulmonary function in the early postoperative stage and compare the difference among three groups. METHODS: Pulmonary function data of patients were collected from September 2015 to February 2016 in Department of Thoracic Surgical Oncology, Cancer Hospital Chinese Academy of Medical Sciences...
October 20, 2016: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
John K Roberts, Matthew A Sparks, Ruediger W Lehrich
Interest in nephrology among trainees is waning in the USA. Early perceptions and attitudes to subject matter can be linked to the quality of pre-clinical curricula. We wanted to explore these attitudes in the setting of modern curriculum redesign. We utilized Q methodology to understand first-year medical student attitudes after an innovative kidney physiology curriculum redesign that focuses on blending multiple learning methods. First-year medical students were invited to take a Q sort survey at the conclusion of a kidney physiology course...
October 19, 2016: Renal Failure
Susann Weihrauch-Blüher, Stefanie Koormann, Jana Brauchmann, Susanna Wiegand
BACKGROUND: The increasing prevalence of childhood obesity is - amongst other factors - due to changed leisure time habits with decreased physical activity and increased media consumption. However, electronic media such as tablets and smartphones might also provide a novel intervention approach to prevent obesity in childhood and adolescence. OBJECTIVES: A summary of interventions applying electronic media to prevent childhood obesity is provided to investigate short term effects as well as long term results of these interventions...
October 18, 2016: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
Jay R Ebert, Theertha Retheesh, Rinky Mutreja, Gregory C Janes
BACKGROUND: Hip abductor tendon (HAT) tearing is commonly implicated in greater trochanteric pain syndrome (GTPS), though limited information exists on the disability associated with this condition and specific presentation of these patients. PURPOSE: To describe the clinical, functional and biomechanical presentation of patients with symptomatic HAT tears. Secondary purposes were to investigate the association between these clinical and functional measures, and to compare the pain and disability reported by HAT tear patients to those with end-stage hip osteoarthritis (OA)...
October 2016: International Journal of Sports Physical Therapy
Abel Makubi, Philip Sasi, Mariam Ngaeje, Enrico M Novelli, Bruno P Mmbando, Mark T Gladwin, Julie Makani
BACKGROUND: Hydroxyurea (HU) has been demonstrated to be efficacious in reducing complications in individuals with sickle cell anemia (SCA) but poor adherence is a barrier. Directly Observed Therapy (DOT) has been shown to improve adherence in various chronic diseases but there is limited data in adults with SCA. METHODS AND DESIGN: To examine the effect of mobile-directly observed therapy (mDOT) on adherence to HU (mDOT-HuA) in adults with SCA at Muhimbili National Hospital in Tanzania...
October 18, 2016: BMC Medical Research Methodology
Michelle Rae, Michelle Girouard, Colin McKinnon, Jack P Callaghan, Wayne J Albert
Police officers have been identified as group at high risk for developing musculoskeletal injuries. The purpose of this study was to determine physical demands differences of patrol officers during day shifts and night shifts. Sixteen participants were recruited (10 males, 6 females) for in-vehicle observation over one full day shift and one full night shift. Dynamic pressure distribution when seated in the vehicle was assessed and compared between the first and last part of each shift. Activity characterization and postural analyses were conducted from video that was recorded continuously for the duration of each shift to determine time spent in each task and corresponding postures...
October 18, 2016: International Journal of Occupational Safety and Ergonomics: JOSE
Simon A Moss, Melanie Irons, Martin Boland
BACKGROUND AND AIMS: Lecturers often present entertaining videos, or organize a variety of amusing demonstrations, to foster student engagement or to encourage critical analysis. Magic tricks, in particular, have been shown to activate neural circuits that underpin motivation or problem-solving and, therefore, could be beneficial during lectures. Nevertheless, we hypothesize that, unless the method that underpins these tricks is revealed, students may ruminate over possible explanations, distracting attention from the lecture material...
October 18, 2016: British Journal of Educational Psychology
Xiao-Yan Yang, Li-Li Long, Bo Xiao
OBJECTIVE: To study the role of video electroencephalogram (VEEG) versus regular electroencephalogram (REEG) in the diagnosis of epilepsy and localization of origin of epileptic discharge in children through a comparative analysis. METHODS: A retrospective analysis was performed for the clinical data of 223 children with clinical paroxysmal symptoms in the past and suspected epilepsy. VEEG and REEG were compared from the aspects of monitoring of clinical seizures, interictal epileptiform discharge (IED), localization of the origin of IED, and identification of non-epileptic seizures, and the detection rate of IED during awakening and sleep stages was also compared...
October 2016: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
Roisin Bartlam, Rajiv Mohanraj
BACKGROUND: Seizures can lead to cardiac arrhythmias by a number of mechanisms including activation/inhibition of cortical autonomic centers, increase in vagal tone through activation of brainstem reflex centers, and respiratory failure. Ictal asystole (IA) is a potential mechanism underlying sudden unexpected death in epilepsy (SUDEP). We analyzed the clinical features of 5 patients who developed IA requiring pacemaker implantation. METHODS: Patients with ictal arrhythmias were identified from the video-telemetry and ambulatory EEG database at Greater Manchester Neurosciences Centre, as well as an independent epilepsy residential care facility...
October 13, 2016: Epilepsy & Behavior: E&B
Mingxia Huang, Motohiro Fujita, Wisinee Wisetjindawat
This paper presents an analysis of drivers' stopping and traversing behaviors during inter-green periods. Eight intersections were observed in Changchun, China both with and without countdown timers and/or video surveillance during summer and winter. The impacts of the devices on the drivers' behavior were examined and compared between the two seasons from a safety perspective. During winter abrupt braking on icy road can be very dangerous. The analysis was performed by dividing the approach leg into 10m intervals up to 90m upstream from the stop line...
October 14, 2016: Accident; Analysis and Prevention
Wilfred F Peter, Henrika Cw de Vet, Maarten Boers, Jaap Harlaar, Leo D Roorda, Rudolf W Poolman, Vanessa Ab Scholtes, Martijn Steultjens, Gordon J Hendry, Ewa M Roos, Francis Guillemin, Maria G Benedetti, Lorenzo Cavazzuti, Antonio Escobar, Hanne Dagfinrud, Caroline B Terwee
OBJECTIVE: The Animated Activity Questionnaire (AAQ) assesses activity limitations in patients with hip/knee osteoarthritis (HKOA), and consisting video animations of which patients choose the animation that best matches their own performance. The AAQ has shown good validity and reliability. This study aims to evaluate cross-cultural and construct validity of the AAQ. Methods Cross-cultural validity was assessed using ordinal logistic regression analysis to evaluate Differential Item Functioning (DIF) across 7 languages...
October 16, 2016: Arthritis Care & Research
Ke Liao, Bruce D McCandliss, Susan E Carlson, John Colombo, D Jill Shaddy, Elizabeth H Kerling, Rebecca J Lepping, Wichian Sittiprapaporn, Carol L Cheatham, Kathleen M Gustafson
Long-chain polyunsaturated fatty acids (LCPUFA) have been shown to be necessary for early retinal and brain development, but long-term cognitive benefits of LCPUFA in infancy have not been definitively established. The present study sought to determine whether LCPUFA supplementation during the first year of life would result in group differences in behavior and event-related potentials (ERPs) while performing a task requiring response inhibition (Go/No-Go) at 5.5 years of age. As newborns, 69 children were randomly assigned to infant formulas containing either no LCPUFA (control) or formula with 0...
October 16, 2016: Developmental Science
John E Stone, William R Sherman, Klaus Schulten
Immersive molecular visualization provides the viewer with intuitive perception of complex structures and spatial relationships that are of critical interest to structural biologists. The recent availability of commodity head mounted displays (HMDs) provides a compelling opportunity for widespread adoption of immersive visualization by molecular scientists, but HMDs pose additional challenges due to the need for low-latency, high-frame-rate rendering. State-of-the-art molecular dynamics simulations produce terabytes of data that can be impractical to transfer from remote supercomputers, necessitating routine use of remote visualization...
May 2016: IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum: [proceedings]
Edward Gilbert-Kawai, Jonny Coppel, Hennis Phillip, Michael Grocott, Can Ince, Daniel Martin
Present knowledge of how the microcirculation is altered by prolonged exposure to hypoxia at high altitude is incomplete and modification of existing analytical techniques may improve our knowledge considerably. We set out to use a novel simplified method of measuring in vivo capillary density during an expedition to high altitude using a CytoCam incident dark field imaging video-microscope. The simplified method of data capture involved recording one-second images of the mucosal surface of the inner lip to reveal data about microvasculature density in ten individuals...
2016: F1000Research
Woo Seok Kang, Sang Hun Lee, Chan Joo Yang, Joong Ho Ahn, Jong Woo Chung, Hong Ju Park
Vestibular migraine (VM) is one of the most common causes of episodic vertigo. We reviewed the results of multiple vestibular function tests in a cohort of VM patients who were diagnosed with VM according to the diagnostic criteria of the Barany Society and the International Headache Society and assessed the efficacy of each for predicting the prognosis in VM patients. A retrospective chart analysis was performed on 81 VM patients at a tertiary care center from June 2014 to July 2015. Patients were assessed by the video head impulse test (vHIT), caloric test, vestibular-evoked myogenic potentials (VEMPs), and sensory organization test (SOT) at the initial visit and then evaluated for symptomatic improvement after 6 months...
2016: Frontiers in Neurology
R Dubbeldam, C Baten, J H Buurke, J S Rietman
Older cyclists remain at high risk of sustaining an injury after a fall with their bicycle. A growing awareness for the need and possibilities to support safety of older cyclists has been leading to bicycle design ideas. However, the effectiveness and acceptance of such designs has not been studied yet. This study aims to analyse the effect of 3 support systems: an automatic adjustable saddle height, optimised frame and wheel geometry and drive-off assistance. The support systems are integrated on the SOFIE bicycle, a prototype bicycle designed to support older cyclists during (dis-)mounting and at lower cycling speeds...
October 13, 2016: Accident; Analysis and Prevention
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