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https://www.readbyqxmd.com/read/29334825/the-influence-of-traumatic-axonal-injury-in-thalamus-and-brain-stem-on-level-of-consciousness-at-scene-or-admission-a-clinical-mri-study
#1
Hans Kristian Moe, Kent Gøran Moen, Toril Skandsen, Kjell Arne Kvistad, Steven Laureys, Asta Kristine Håberg, Anne Vik
The aim of this study was to investigate how traumatic axonal injury (TAI) lesions in the thalamus, basal ganglia and brain stem on clinical brain MRI are associated with level of consciousness in the acute phase in patients with moderate-severe traumatic brain injury (TBI). 158 patients with moderate-severe TBI (7-70 years) with early 1.5T MRI (median 7 days, range 0-35) without mass lesion were prospectively included. Glasgow Coma Scale (GCS) scores were registered before intubation or at admission. TAI lesions were identified in T2*gradient echo (GRE), fluid attenuated inversion recovery (FLAIR) and diffusion weighted imaging (DWI) scans...
January 15, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29320497/survival-analysis-and-classification-methods-for-forest-fire-size
#2
Pier-Olivier Tremblay, Thierry Duchesne, Steven G Cumming
Factors affecting wildland-fire size distribution include weather, fuels, and fire suppression activities. We present a novel application of survival analysis to quantify the effects of these factors on a sample of sizes of lightning-caused fires from Alberta, Canada. Two events were observed for each fire: the size at initial assessment (by the first fire fighters to arrive at the scene) and the size at "being held" (a state when no further increase in size is expected). We developed a statistical classifier to try to predict cases where there will be a growth in fire size (i...
2018: PloS One
https://www.readbyqxmd.com/read/29294712/exploration-of-crime-scene-characteristics-in-juvenile-homicide-in-the-french-speaking-part-of-belgium
#3
F Jeane Gerard, Kate C Whitfield, Kevin D Browne
This study explores modeling crime-scene characteristics of juvenile homicide in the French-speaking part of Belgium. Multidimensional scaling analysis was carried out on crime-scene characteristics derived from the court files of 67 individuals under 22 years old, who had been charged with murder or attempted murder (1995-2009). Three thematic regions (Expressive: multiple offenders; Instrumental: theft; Instrumental: sex/forensic awareness) distinguished types of aggression displayed during the offense. These themes reaffirm that the expressive-instrumental differentiation found in general homicide studies is valuable when attempting to discriminate juvenile homicides...
April 1, 2017: Journal of Interpersonal Violence
https://www.readbyqxmd.com/read/29281940/the-cognitive-tools-that-support-mentally-constructing-event-and-scene-representations
#4
Signy Sheldon, Nadim El-Asmar
Constructing mental representations is critical for many cognitive tasks, yet it is unclear if forming different representations relies on distinct cognitive processes. We tested how episodic memory contributes to constructing scene and event-based mental scenarios as well as the effects of two types of imagery ability (object and spatial imagery) on this contribution. Forty participants were given a series of scenario cues that were classified as scenes (e.g., a beach) or events (e.g., a family meal) by independent raters...
December 27, 2017: Memory
https://www.readbyqxmd.com/read/29217684/retrieval-demands-adaptively-change-striatal-old-new-signals-and-boost-subsequent-long-term-memory
#5
Nora A Herweg, Tobias Sommer, Nico Bunzeck
The striatum is a central part of the dopaminergic mesolimbic system and contributes both to the encoding and retrieval of long-term memories. In this regard, the co-occurrence of striatal novelty and retrieval success effects in independent studies underlines the structure's double duty and suggests dynamic contextual adaption. To test this hypothesis and further investigate the underlying mechanisms of encoding and retrieval dynamics, human subjects viewed pre-familiarized scene images intermixed with new scenes and classified them as indoor vs...
December 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29213188/a-novel-framework-for-intelligent-surveillance-system-based-on-abnormal-human-activity-detection-in-academic-environments
#6
Malek Al-Nawashi, Obaida M Al-Hazaimeh, Mohamad Saraee
Abnormal activity detection plays a crucial role in surveillance applications, and a surveillance system that can perform robustly in an academic environment has become an urgent need. In this paper, we propose a novel framework for an automatic real-time video-based surveillance system which can simultaneously perform the tracking, semantic scene learning, and abnormality detection in an academic environment. To develop our system, we have divided the work into three phases: preprocessing phase, abnormal human activity detection phase, and content-based image retrieval phase...
2017: Neural Computing & Applications
https://www.readbyqxmd.com/read/29186923/adapting-local-features-for-face-detection-in-thermal-image
#7
Chao Ma, Ngo Thanh Trung, Hideaki Uchiyama, Hajime Nagahara, Atsushi Shimada, Rin-Ichiro Taniguchi
A thermal camera captures the temperature distribution of a scene as a thermal image. In thermal images, facial appearances of different people under different lighting conditions are similar. This is because facial temperature distribution is generally constant and not affected by lighting condition. This similarity in face appearances is advantageous for face detection. To detect faces in thermal images, cascade classifiers with Haar-like features are generally used. However, there are few studies exploring the local features for face detection in thermal images...
November 27, 2017: Sensors
https://www.readbyqxmd.com/read/29144395/real-time-indoor-scene-description-for-the-visually-impaired-using-autoencoder-fusion-strategies-with-visible-cameras
#8
Salim Malek, Farid Melgani, Mohamed Lamine Mekhalfi, Yakoub Bazi
This paper describes three coarse image description strategies, which are meant to promote a rough perception of surrounding objects for visually impaired individuals, with application to indoor spaces. The described algorithms operate on images (grabbed by the user, by means of a chest-mounted camera), and provide in output a list of objects that likely exist in his context across the indoor scene. In this regard, first, different colour, texture, and shape-based feature extractors are generated, followed by a feature learning step by means of AutoEncoder (AE) models...
November 16, 2017: Sensors
https://www.readbyqxmd.com/read/29140311/scene-aware-adaptive-updating-for-visual-tracking-via-correlation-filters
#9
Fan Li, Sirou Zhang, Xiaoya Qiao
In recent years, visual object tracking has been widely used in military guidance, human-computer interaction, road traffic, scene monitoring and many other fields. The tracking algorithms based on correlation filters have shown good performance in terms of accuracy and tracking speed. However, their performance is not satisfactory in scenes with scale variation, deformation, and occlusion. In this paper, we propose a scene-aware adaptive updating mechanism for visual tracking via a kernel correlation filter (KCF)...
November 15, 2017: Sensors
https://www.readbyqxmd.com/read/29098040/differences-in-liquid-cloud-droplet-effective-radius-and-number-concentration-estimates-between-modis-collections-5-1-and-6-over-global-oceans
#10
John Rausch, Kerry Meyer, Ralf Bennartz, Steven Platnick
Differences in cloud droplet effective radius and cloud droplet number concentration (CDNC) estimates inferred from the Aqua MODIS Collections 5.1 and 6 cloud products (MYD06) are examined for warm clouds over global oceans for the year 2008. Individual pixel level retrievals for both collections are aggregated to 1° × 1° and compared globally and regionally for the three main spectral channel pairs used for MODIS cloud optical property retrievals. Comparisons between both collections are performed for cases in which all three effective radii retrievals are classified by the MODIS Cloud Product as valid...
2017: Atmospheric Measurement Techniques
https://www.readbyqxmd.com/read/29091906/a-large-scale-dataset-of-single-and-mixed-source-short-tandem-repeat-profiles-to-inform-human-identification-strategies-provedit
#11
Lauren E Alfonse, Amanda D Garrett, Desmond S Lun, Ken R Duffy, Catherine M Grgicak
DNA-based human identity testing is conducted by comparison of PCR-amplified polymorphic Short Tandem Repeat (STR) motifs from a known source with the STR profiles obtained from uncertain sources. Samples such as those found at crime scenes often result in signal that is a composite of incomplete STR profiles from an unknown number of unknown contributors, making interpretation an arduous task. To facilitate advancement in STR interpretation challenges we provide over 25,000 multiplex STR profiles produced from one to five known individuals at target levels ranging from one to 160 copies of DNA...
October 24, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29076684/left-hand-thumb-imprint-patterns-among-medical-students
#12
Omair Khan, Muhammad Zeeshan Haroon, Muhammad Adnan Rashid, Muhammad Naseem Khan, Delawar Khan
BACKGROUND: Finger printing is an absolute method of identification. Recovery of finger prints from a crime scene is an important method of Forensic identification. Human finger prints are detailed, unique, difficult to alter, easily classifiable and durable over life making them stable and long-term tool of human identification. METHODS: This cross-sectional study was conducted on 95,3rd year MBBS students of Ayub Medical College Abbottabad from December 2014 to August 2015 to establish the frequency of left hand thumb imprints by rolling and plain method...
July 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29052534/specialist-advice-may-improve-patient-selection-for-decompression-therapy-following-diving-accidents-a-retrospective-observational-study
#13
Daniel Steffensmeier, Roland Albrecht, Jürg Wendling, Roger Melliger, Donat R Spahn, Philipp Stein, Christophe Wyss
BACKGROUND: Even in a landlocked country like Switzerland recreational diving is becoming more and more popular. Smaller lakes in the Alps are located at an altitude of 2500 m above sea level. The incidence of diving accidents among all helicopter emergency service missions and the consecutive medical knowledge about decompression injuries is low. Thus, a collaboration between the Swiss Air-Ambulance (Rega) and the divers alert network (DAN) was initiated to improve patient treatment and identification of decompression injury and necessity of hyperbaric oxygen therapy (HBO)...
October 19, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/29048025/one-step-real-virtual-combined-reflection-hologram-a-4f-relay-approach
#14
Jian Su, Yingqing Huang, Yibei Chen, Xiaoyu Jiang, Xingpeng Yan
The production of conventional optical reflection holograms can be classified into the one-step method or the two-step method. In the one-step method, only the diverging light of an object can be recorded, and the reconstructed scene is a virtual one behind the recording medium. In the two-step method, the diverging light or the converging light can be recorded alternatively. However, the process is complicated considering double exposures. The object is first imaged by a 4f system, and then the interference patterns are recorded by single exposure...
August 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/29046954/an-eye-tracking-study-of-bloodstain-pattern-analysts-during-pattern-classification
#15
R M Arthur, J Hoogenboom, R D Green, M C Taylor, K G de Bruin
Bloodstain pattern analysis (BPA) is the forensic discipline concerned with the classification and interpretation of bloodstains and bloodstain patterns at the crime scene. At present, it is unclear exactly which stain or pattern properties and their associated values are most relevant to analysts when classifying a bloodstain pattern. Eye tracking technology has been widely used to investigate human perception and cognition. Its application to forensics, however, is limited. This is the first study to use eye tracking as a tool for gaining access to the mindset of the bloodstain pattern expert...
October 18, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29036082/binary-classification-of-mueller-matrix-images-from-an-optimization-of-poincar%C3%A3-coordinates
#16
Meredith K Kupinski, Jaden Bankhead, Adriana Stohn, Russell Chipman
A new binary classification method for Mueller matrix images is presented which optimizes the polarization state analyzer (PSA) and the polarization state generator (PSG) using a statistical divergence between pixel values in two regions of an image. This optimization generalizes to multiple PSA/PSG pairs so that the classification performance as a function of number of polarimetric measurements can be considered. Optimizing PSA/PSG pairs gives insight into which polarimetric measurements are most useful for the binary classification...
June 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28991906/object-detection-through-search-with-a-foveated-visual-system
#17
Emre Akbas, Miguel P Eckstein
Humans and many other species sense visual information with varying spatial resolution across the visual field (foveated vision) and deploy eye movements to actively sample regions of interests in scenes. The advantage of such varying resolution architecture is a reduced computational, hence metabolic cost. But what are the performance costs of such processing strategy relative to a scheme that processes the visual field at high spatial resolution? Here we first focus on visual search and combine object detectors from computer vision with a recent model of peripheral pooling regions found at the V1 layer of the human visual system...
October 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28961163/object-classification-in-semi-structured-enviroment-using-forward-looking-sonar
#18
Matheus Dos Santos, Pedro Otávio Ribeiro, Pedro Núñez, Paulo Drews-Jr, Silvia Botelho
The submarine exploration using robots has been increasing in recent years. The automation of tasks such as monitoring, inspection, and underwater maintenance requires the understanding of the robot's environment. The object recognition in the scene is becoming a critical issue for these systems. On this work, an underwater object classification pipeline applied in acoustic images acquired by Forward-Looking Sonar (FLS) are studied. The object segmentation combines thresholding, connected pixels searching and peak of intensity analyzing techniques...
September 29, 2017: Sensors
https://www.readbyqxmd.com/read/28953159/epidemiology-of-open-globe-injury-in-children
#19
Muhammed Batur, Erbil Seven, Mahmut Nedim Akaltun, Serek Tekin, Tekin Yasar
PURPOSE: The purpose of this study was to evaluate the epidemiology and outcomes of pediatric open globe injury (OGI). METHOD: The medical records of all patients diagnosed with OGI in the authors' clinic between 1996 and 2015 were screened retrospectively. A total of 893 eyes of 892 patients aged 16 years or younger were included in the study. Open globe injury was classified according to the ocular trauma classification (OTS). Age, sex, history, cause and month of trauma, treatment received, visual acuity at presentation, final visual acuity, and cause of vision loss were recorded...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28932681/assessing-neural-tuning-for-object-perception-in-schizophrenia-and-bipolar-disorder-with-multivariate-pattern-analysis-of-fmri-data
#20
Eric A Reavis, Junghee Lee, Jonathan K Wynn, Stephen A Engel, Mark S Cohen, Keith H Nuechterlein, David C Glahn, Lori L Altshuler, Michael F Green
INTRODUCTION: Deficits in visual perception are well-established in schizophrenia and are linked to abnormal activity in the lateral occipital complex (LOC). Related deficits may exist in bipolar disorder. LOC contains neurons tuned to object features. It is unknown whether neural tuning in LOC or other visual areas is abnormal in patients, contributing to abnormal perception during visual tasks. This study used multivariate pattern analysis (MVPA) to investigate perceptual tuning for objects in schizophrenia and bipolar disorder...
2017: NeuroImage: Clinical
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