keyword
MENU ▼
Read by QxMD icon Read
search

Cluttering

keyword
https://www.readbyqxmd.com/read/28533685/factor-structure-reliability-and-validity-of-the-japanese-version-of-the-hoarding-rating-scale-self-report-hrs-sr-j
#1
Aki Tsuchiyagaito, Satoshi Horiuchi, Toko Igarashi, Yoshiya Kawanori, Yoshiyuki Hirano, Hirooki Yabe, Akiko Nakagawa
BACKGROUND: The Hoarding Rating Scale-Self-Report (HRS-SR) is a five-item scale that assesses the symptoms of hoarding. These symptoms include excessive acquisition, difficulty in discarding, and excessive clutter that causes distress. We conducted three studies to examine the factor structure, reliability, and validity of the Japanese version of the HRS-SR (HRS-SR-J). METHODS: Study 1 examined its reliability; 193 college students and 320 adolescents and adults completed the HRS-SR-J and, of the college students, 32 took it again 2 weeks later...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28531135/aekf-slam-a-new-algorithm-for-robotic-underwater-navigation
#2
Xin Yuan, José-Fernán Martínez-Ortega, José Antonio Sánchez Fernández, Martina Eckert
In this work, we focus on key topics related to underwater Simultaneous Localization and Mapping (SLAM) applications. Moreover, a detailed review of major studies in the literature and our proposed solutions for addressing the problem are presented. The main goal of this paper is the enhancement of the accuracy and robustness of the SLAM-based navigation problem for underwater robotics with low computational costs. Therefore, we present a new method called AEKF-SLAM that employs an Augmented Extended Kalman Filter (AEKF)-based SLAM algorithm...
May 21, 2017: Sensors
https://www.readbyqxmd.com/read/28505665/visual-wetness-perception-based-on-image-color-statistics
#3
Masataka Sawayama, Edward H Adelson, Shin'ya Nishida
Color vision provides humans and animals with the abilities to discriminate colors based on the wavelength composition of light and to determine the location and identity of objects of interest in cluttered scenes (e.g., ripe fruit among foliage). However, we argue that color vision can inform us about much more than color alone. Since a trichromatic image carries more information about the optical properties of a scene than a monochromatic image does, color can help us recognize complex material qualities...
May 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28491271/stereoscopic-segmentation-cues-improve-visual-timing-performance-in-spatiotemporally-cluttered-environments
#4
Daniel Talbot, Erik Van der Burg, John Cass
Recently, Cass and Van der Burg demonstrated that temporal order judgment (TOJ) precision could be profoundly impaired by the mere presence of dynamic visual clutter elsewhere in the visual field. This study examines whether presenting target and distractor objects in different depth planes might ameliorate this remote temporal camouflage (RTC) effect. TOJ thresholds were measured under static and dynamic (flickering) distractor conditions. In Experiment 1, targets were presented at zero, crossed, or uncrossed disparity, with distractors fixed at zero disparity...
March 2017: I-Perception
https://www.readbyqxmd.com/read/28458481/comparing-object-recognition-from-binary-and-bipolar-edge-images-for-visual-prostheses
#5
Jae-Hyun Jung, Tian Pu, Eli Peli
Visual prostheses require an effective representation method due to the limited display condition which has only 2 or 3 levels of grayscale in low resolution. Edges derived from abrupt luminance changes in images carry essential information for object recognition. Typical binary (black and white) edge images have been used to represent features to convey essential information. However, in scenes with a complex cluttered background, the recognition rate of the binary edge images by human observers is limited and additional information is required...
November 2016: Journal of Electronic Imaging
https://www.readbyqxmd.com/read/28452663/psychometric-evaluation-of-the-saving-inventory-revised-in-older-adults
#6
Catherine R Ayers, Mary E Dozier, Tina L Mayes
OBJECTIVES: Hoarding disorder (HD) is a chronic condition characterized by severe impairment in health and functioning for older adults. Researchers and clinicians commonly use the Saving Inventory-Revised (SI-R), a self-report measure validated for the assessment of HD, to establish symptom severity. This study represents the first evaluation of the psychometric properties of the SI-R in a sample of older adults with HD. METHODS: Participants were 156 older adults with HD and 23 older adults with no psychiatric diagnoses...
May 2017: Clinical Gerontologist
https://www.readbyqxmd.com/read/28448465/shadow-based-vehicle-detection-in-urban-traffic
#7
Manuel Ibarra-Arenado, Tardi Tjahjadi, Juan Pérez-Oria, Sandra Robla-Gómez, Agustín Jiménez-Avello
Vehicle detection is a fundamental task in Forward Collision Avoiding Systems (FACS). Generally, vision-based vehicle detection methods consist of two stages: hypotheses generation and hypotheses verification. In this paper, we focus on the former, presenting a feature-based method for on-road vehicle detection in urban traffic. Hypotheses for vehicle candidates are generated according to the shadow under the vehicles by comparing pixel properties across the vertical intensity gradients caused by shadows on the road, and followed by intensity thresholding and morphological discrimination...
April 27, 2017: Sensors
https://www.readbyqxmd.com/read/28436232/safety-performance-and-satisfaction-outcomes-in-the-operating-room-a-literature-review
#8
Anjali Joseph, Sara Bayramzadeh, Zahra Zamani, Bill Rostenberg
OBJECTIVE: This review of empirical literature focuses on the design of operating rooms (ORs) by investigating the physical environmental features of ORs associated with patient and staff outcomes. BACKGROUND: Many ORs built more than 30 years ago remain operational today. However, most are inadequately designed to handle the equipment, processes, and people that a contemporary OR needs to accommodate. However, the evidence base for designing ORs has been sorely lacking, and little guidance exists on how OR design can improve safety and performance outcomes...
January 1, 2017: HERD
https://www.readbyqxmd.com/read/28433775/looking-is-buying-how-visual-attention-and-choice-are-affected-by-consumer-preferences-and-properties-of-the-supermarket-shelf
#9
Kerstin Gidlöf, Andrey Anikin, Martin Lingonblad, Annika Wallin
There is a battle in the supermarket isle, a battle between what the consumer wants and what the retailer and others want her to see, and subsequently to buy. Product packages and displays contain a number of features and attributes tailored to catch consumers' attention. These are what we call external factors comprising the visual saliency, the number of facings, and the placement of each product. But a consumer also brings with her a number of goals and interests related to the products and their attributes...
April 19, 2017: Appetite
https://www.readbyqxmd.com/read/28432139/feature-selective-attention-adaptively-shifts-noise-correlations-in-primary-auditory-cortex
#10
Joshua Downer, Brittany Rapone, Jessica Verhein, Kevin N O'Connor, Mitchell L Sutter
Sensory environments often contain an overwhelming amount of information, with both relevant and irrelevant information competing for neural resources. Feature attention mediates this competition by selecting the sensory features needed to form a coherent percept. How attention affects the activity of populations of neurons to support this process is poorly understood because population coding is typically studied through simulations in which one sensory feature is encoded without competition. Therefore, to study the effects of feature attention on population-based neural coding, investigations must be extended to include stimuli with both relevant and irrelevant features...
April 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28425075/technical-note-real-time-web-based-wireless-visual-guidance-system-for-radiotherapy
#11
Danny Lee, Siyong Kim, Jatinder R Palta, Taeho Kim
Describe a Web-based wireless visual guidance system that mitigates issues associated with hard-wired audio-visual aided patient interactive motion management systems that are cumbersome to use in routine clinical practice. Web-based wireless visual display duplicates an existing visual display of a respiratory-motion management system for visual guidance. The visual display of the existing system is sent to legacy Web clients over a private wireless network, thereby allowing a wireless setting for real-time visual guidance...
April 19, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28419875/falls-in-people-with-parkinson-s-disease-a-prospective-comparison-of-community-and-home-based-falls
#12
Robyn M Lamont, Meg E Morris, Hylton B Menz, Jennifer L McGinley, Sandra G Brauer
BACKGROUND: Falls are common and debilitating in people with Parkinson's disease (PD) and restrict participation in daily activities. Understanding circumstances of falls in the community and at home may assist clinicians to target therapy more effectively. OBJECTIVE: To compare the characteristics of community and home fallers and the circumstances that contribute to falls in people living with PD. METHODS: People with mild-moderately severe PD (n=196) used a daily falls diary and telephone hotline to report prospectively the occurrence, location and circumstances of falls over 14 months...
April 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28417832/color-vision-in-color-display-night-vision-goggles
#13
Eric P Liggins, William P Serle
INTRODUCTION: Aircrew viewing eyepiece-injected symbology on color display night vision goggles (CDNVGs) are performing a visual task involving color under highly unnatural viewing conditions. Their performance in discriminating different colors and responding to color cues is unknown. METHODS: Experimental laboratory measurements of 1) color discrimination and 2) visual search performance are reported under adaptation conditions representative of a CDNVG. Color discrimination was measured using a two-alternative forced choice (2AFC) paradigm that probes color space uniformly around a white point...
May 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28399432/graph-cut-based-method-for-segmenting-the-left-ventricle-from-mri-or-echocardiographic-images
#14
Michael Bernier, Pierre-Marc Jodoin, Olivier Humbert, Alain Lalande
In this paper, we present a fast and interactive graph cut method for 3D segmentation of the endocardial wall of the left ventricle (LV) adapted to work on two of the most widely used modalities: magnetic resonance imaging (MRI) and echocardiography. Our method accounts for the fundamentally different nature of both modalities: 3D echocardiographic images have a low contrast, a poor signal-to-noise ratio and frequent signal drop, while MR images are more detailed but also cluttered and contain highly anisotropic voxels...
April 2, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28396415/variations-in-crowding-saccadic-precision-and-spatial-localization-reveal-the-shared-topology-of-spatial-vision
#15
John A Greenwood, Martin Szinte, Bilge Sayim, Patrick Cavanagh
Visual sensitivity varies across the visual field in several characteristic ways. For example, sensitivity declines sharply in peripheral (vs. foveal) vision and is typically worse in the upper (vs. lower) visual field. These variations can affect processes ranging from acuity and crowding (the deleterious effect of clutter on object recognition) to the precision of saccadic eye movements. Here we examine whether these variations can be attributed to a common source within the visual system. We first compared the size of crowding zones with the precision of saccades using an oriented clock target and two adjacent flanker elements...
April 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28378781/visual-crowding-is-a-combination-of-an-increase-of-positional-uncertainty-source-confusion-and-featural-averaging
#16
William J Harrison, Peter J Bex
Although we perceive a richly detailed visual world, our ability to identify individual objects is severely limited in clutter, particularly in peripheral vision. Models of such "crowding" have generally been driven by the phenomenological misidentifications of crowded targets: using stimuli that do not easily combine to form a unique symbol (e.g. letters or objects), observers typically confuse the source of objects and report either the target or a distractor, but when continuous features are used (e.g. orientated gratings or line positions) observers report a feature somewhere between the target and distractor...
April 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28362605/low-cost-3-d-flow-estimation-of-blood-with-clutter
#17
Siyuan Wei, Ming Yang, Jian Zhou, Richard Sampson, Oliver D Kripfgans, J Brian Fowlkes, Thomas F Wenisch, Chaitali Chakrabarti
Volumetric flow rate estimation is an important ultrasound medical imaging modality that is used for diagnosing cardiovascular diseases. Flow rates are obtained by integrating velocity estimates over a cross-sectional plane. Speckle tracking is a promising approach that overcomes the angle dependency of traditional Doppler methods, but suffers from poor lateral resolution. Recent work improves lateral velocity estimation accuracy by reconstructing a synthetic lateral phase (SLP) signal. However, the estimation accuracy of such approaches is compromised by the presence of clutter...
May 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28346395/a-correlation-based-joint-cfar-detector-using-adaptively-truncated-statistics-in-sar-imagery
#18
Jiaqiu Ai, Xuezhi Yang, Fang Zhou, Zhangyu Dong, Lu Jia, He Yan
Traditional constant false alarm rate (CFAR) detectors only use the contrast information between ship targets and clutter, and they suffer probability of detection (PD) degradation in multiple target situations. This paper proposes a correlation-based joint CFAR detector using adaptively-truncated statistics (hereafter called TS-2DLNCFAR) in SAR images. The proposed joint CFAR detector exploits the gray intensity correlation characteristics by building a two-dimensional (2D) joint log-normal model as the joint distribution (JPDF) of the clutter, so joint CFAR detection is realized...
March 27, 2017: Sensors
https://www.readbyqxmd.com/read/28329819/development-of-a-physical-environmental-observational-tool-for-dining-environments-in-long-term-care-settings
#19
Habib Chaudhury, Heather Keller, Kaylen Pfisterer, Lillian Hung
Purpose: This paper presents the first standardized physical environmental assessment tool titled Dining Environment Audit Protocol (DEAP) specifically designed for dining spaces in care homes and reports the results of its psychometric properties. Items rated include: adequacy of lighting, glare, personal control, clutter, staff supervision support, restraint use, and seating arrangement option for social interaction. Two scales summarize the prior items and rate the overall homelikeness and functionality of the space...
February 20, 2017: Gerontologist
https://www.readbyqxmd.com/read/28328505/blocked-elements-in-1-d-and-2-d-arrays-part-ii-compensation-methods-as-applied-to-large-coherent-apertures
#20
Marko Jakovljevic, Nick Bottenus, Lily Kuo, Shalki Kumar, Jeremy J Dahl, Gregg E Trahey
In Part I of the paper, we detected elements blocked by ribs during simulated and in vivo transcostal liver scans, and we turned those elements off to compensate for the loss in visibility of liver vasculature. Here, we apply blocked-element detection and adaptive compensation to large synthetic aperture data collected through rib samples ex vivo, in order to reduce near-field clutter and to recover lateral resolution. To construct large synthetic transmit and receive apertures, we collected the individual channel signals from a fully-sampled matrix array at multiple and know array locations across the tissue samples...
March 16, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
keyword
keyword
41690
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"