Academic literature on the topic 'Standard visual range'
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Journal articles on the topic "Standard visual range"
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Embse, Charles Vonder, and Arne Engebretsen. "Technology Tips: Visual Representations of Mean and Standard Deviation." Mathematics Teacher 89, no. 8 (1996): 688–92. http://dx.doi.org/10.5951/mt.89.8.0688.
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Summary statistics used to describe a data set are some of the most commonly taught statistical concepts in the secondary curriculum. Mean, median, mode, range, and standard deviation are topics that can be found in nearly every program. Technology empowers us to access these concepts and easily to create visual displays that interpret and describe the data in ways that enhance students' understanding. Many graphing calculators allow students to display nonparametric statistical information using a box-and-whiskers plot or a modified box plot showing a visual representation of the median, upper and lower quartiles, and the range of the data. But how can students visually display the mean of the data or show what it means to be within one standard deviation of the mean? One way to create this type of visual display is with a bar graph and constant functions. Unfortunately, graphing calculators, and some computer programs, only display histograms and not bar graphs. The tips in this issue focus on using graphing calculators to draw bar graphs that can help students visualize and interpret the mean and standard deviation of a data set.
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Sugisaki, Kenji, Ryo Asaoka, Toshihiro Inoue, et al. "Predicting Humphrey 10-2 visual field from 24-2 visual field in eyes with advanced glaucoma." British Journal of Ophthalmology 104, no. 5 (2019): 642–47. http://dx.doi.org/10.1136/bjophthalmol-2019-314170.
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AimsTo predict Humphrey Field Analyzer Central 10-2 Swedish Interactive Threshold Algorithm-Standard test (HFA 10-2) results (Carl Zeiss Meditec, San Leandro, CA) from HFA 24-2 results of the same eyes with advanced glaucoma.MethodsTraining and testing HFA 24-2 and 10-2 data sets, respectively, consisted of 175 eyes (175 patients) and 44 eyes (44 patients) with open advanced glaucoma (mean deviation of HFA 24-2 ≤−20 dB). Using the training data set, the 68 total deviation (TD) values of the HFA 10-2 test points were predicted from those of the innermost 16 HFA 24-2 test points in the same eye, using image processing or various machine learning methods including bilinear interpolation (IP) as a standard for comparison. The absolute prediction error (PredError) was calculated by applying each method to the testing data set.ResultsThe mean (SD) test–retest variability of the HFA 10-2 results in the testing data set was 2.1±1.0 dB, while the IP method yielded a PredError of 5.0±1.7 dB. Among the methods tested, support vector regression (SVR) provided a smallest PredError (4.0±1.5 dB). SVR predicted retinal sensitivity at HFA 10-2 test points in the preserved ‘central isle’ of advanced glaucoma from HFA 24-2 results of the same eye within an error range of about 25%, while error range was approximately twice of the test–retest variability.ConclusionApplying SVR to HFA 24-2 results allowed us to predict TD values at HFA 10-2 test points of the same eye with advanced glaucoma with an error range of about 25%.
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Wroblewski, Dariusz, Brian A. Francis, Alfredo Sadun, Ghazal Vakili, and Vikas Chopra. "Testing of Visual Field with Virtual Reality Goggles in Manual and Visual Grasp Modes." BioMed Research International 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/206082.
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Automated perimetry is used for the assessment of visual function in a variety of ophthalmic and neurologic diseases. We report development and clinical testing of a compact, head-mounted, and eye-tracking perimeter (VirtualEye) that provides a more comfortable test environment than the standard instrumentation. VirtualEye performs the equivalent of a full threshold 24-2 visual field in two modes: (1) manual, with patient response registered with a mouse click, and (2) visual grasp, where the eye tracker senses change in gaze direction as evidence of target acquisition. 59 patients successfully completed the test in manual mode and 40 in visual grasp mode, with 59 undergoing the standard Humphrey field analyzer (HFA) testing. Large visual field defects were reliably detected by VirtualEye. Point-by-point comparison between the results obtained with the different modalities indicates: (1) minimal systematic differences between measurements taken in visual grasp and manual modes, (2) the average standard deviation of the difference distributions of about 5 dB, and (3) a systematic shift (of 4–6 dB) to lower sensitivities for VirtualEye device, observed mostly in high dB range. The usability survey suggested patients’ acceptance of the head-mounted device. The study appears to validate the concepts of a head-mounted perimeter and the visual grasp mode.
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Lukman, Aldyfra Luhulima, Catherine Bridge, Stephen John Dain, and Mei-Ying Boon. "Luminance Contrast of Accessible Tactile Indicators for People With Visual Impairment." Ergonomics in Design: The Quarterly of Human Factors Applications 28, no. 2 (2019): 4–15. http://dx.doi.org/10.1177/1064804619841841.
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Australia is one of only two known countries with a safety standard specifying levels of contrast required to provide accessible environments for people with visual impairment. However, these requirements were not developed based on empirical research involving people with vision loss. We investigated whether the level of luminance contrast in Australian accessibility standards, 30%, is adequate for people with visual impairments to detect and identify discrete tactile ground surface indicators over a range of contrasts with the background flooring before contact. We found that the 30% luminance contrast is adequate for people with low vision, although they preferred higher contrast.
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Florea, Corneliu, Constantin Vertan, and Laura Florea. "High Dynamic Range Imaging by Perceptual Logarithmic Exposure Merging." International Journal of Applied Mathematics and Computer Science 25, no. 4 (2015): 943–54. http://dx.doi.org/10.1515/amcs-2015-0067.
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Abstract In this paper we emphasize a similarity between the logarithmic type image processing (LTIP) model and the Naka–Rushton model of the human visual system (HVS). LTIP is a derivation of logarithmic image processing (LIP), which further replaces the logarithmic function with a ratio of polynomial functions. Based on this similarity, we show that it is possible to present a unifying framework for the high dynamic range (HDR) imaging problem, namely, that performing exposure merging under the LTIP model is equivalent to standard irradiance map fusion. The resulting HDR algorithm is shown to provide high quality in both subjective and objective evaluations.
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Strybel, Thomas Z., and Michele L. Menges. "Auditory Apparent Motion between Sine Waves Differing in Frequency." Perception 27, no. 4 (1998): 483–95. http://dx.doi.org/10.1068/p270483.
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The effects of frequency differences between the lead and lag stimuli on auditory apparent motion (AAM—the perception of continuous changes in the location of a sound image over time) were examined in two experiments. In experiment 1, three standard frequencies (500, 1000, and 5000 Hz) and three SOAs (40, 60, and 100 ms) were tested. Both standard frequency and stimulus onset asynchrony (SOA) were constant throughout a session. Eleven comparison frequencies were tested within each session, with the range dependent on the standard frequency. At standard frequencies of 500 and 1000 Hz, AAM was heard when the frequencies of the lead and lag stimuli were within 100 Hz of each other. At 5000 Hz, the range of frequencies producing AAM increased with SOA. In experiment 2, two standards (500 and 5000 Hz) were tested with a wider range of SOAs (10–210 ms) varied within a session, and a narrower range of comparison frequencies. Here, comparison frequency was constant throughout a session. At 500 Hz, the SOAs producing AAM did not depend on comparison frequency. At 5000 Hz, the SOAs producing AAM increased with comparison frequency, consistent with Korte's third law of visual apparent motion.
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Kimura, Motohiro, Erich Schröger, István Czigler, and Hideki Ohira. "Human Visual System Automatically Encodes Sequential Regularities of Discrete Events." Journal of Cognitive Neuroscience 22, no. 6 (2010): 1124–39. http://dx.doi.org/10.1162/jocn.2009.21299.
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For our adaptive behavior in a dynamically changing environment, an essential task of the brain is to automatically encode sequential regularities inherent in the environment into a memory representation. Recent studies in neuroscience have suggested that sequential regularities embedded in discrete sensory events are automatically encoded into a memory representation at the level of the sensory system. This notion is largely supported by evidence from investigations using auditory mismatch negativity (auditory MMN), an event-related brain potential (ERP) correlate of an automatic memory-mismatch process in the auditory sensory system. However, it is still largely unclear whether or not this notion can be generalized to other sensory modalities. The purpose of the present study was to investigate the contribution of the visual sensory system to the automatic encoding of sequential regularities using visual mismatch negativity (visual MMN), an ERP correlate of an automatic memory-mismatch process in the visual sensory system. To this end, we conducted a sequential analysis of visual MMN in an oddball sequence consisting of infrequent deviant and frequent standard stimuli, and tested whether the underlying memory representation of visual MMN generation contains only a sensory memory trace of standard stimuli (trace-mismatch hypothesis) or whether it also contains sequential regularities extracted from the repetitive standard sequence (regularity-violation hypothesis). The results showed that visual MMN was elicited by first deviant (deviant stimuli following at least one standard stimulus), second deviant (deviant stimuli immediately following first deviant), and first standard (standard stimuli immediately following first deviant), but not by second standard (standard stimuli immediately following first standard). These results are consistent with the regularity-violation hypothesis, suggesting that the visual sensory system automatically encodes sequential regularities. In combination with a wide range of auditory MMN studies, the present study highlights the critical role of sensory systems in automatically encoding sequential regularities when modeling the world.
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Koong, Denis P., Jillian Lee, Tegan L. Cheng, and David G. Little. "Validity and reliability of smartphone inclinometer applications for measurement of elbow range of motion in paediatric patients." Journal of Children's Orthopaedics 14, no. 5 (2020): 488–94. http://dx.doi.org/10.1302/1863-2548.14.200123.
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Purpose Precise measurement of elbow range of motion (ROM) post-injury or surgery forms an important part of determining prognosis and the need for further intervention. Clinicians are increasingly incorporating smartphone use in our medical practice; we sought to determine if a smartphone goniometer application is a valid and reliable tool for assessment of elbow ROM in the paediatric patient, compared to visual and goniometer assessment. Methods In total, 20 paediatric patients (40 elbows) between six and 15 years of age with an elbow or forearm injury were included in this prospective series. Elbow flexion, extension, pronation and supination were measured independently by two orthopaedic clinicians. Measurements were taken from injured as well as unaffected side using a standardized technique, first with visual estimation and then using a universal goniometer (UG) and smartphone goniometer application Angle Meter via Google Play store (Smart Tool Factory, Istanbul, Turkey). Results There was excellent interobserver reliability for all three modalities, with average intraclass correlation coefficient (ICC) values greater than 0.90. Visual estimation had the lowest average ICC of 0.92, compared to 0.97 for UG and smartphone. Overall, there was excellent intraobserver reliability between the smartphone application and the gold standard UG for all elbow movements with ICCs ranging between 0.98 to 0.99 and mean absolute difference ranging from 1.1 ± 1.0° to 2.6 ± 1.9°. The smartphone application showed superior agreement over visual estimation when compared to the gold standard UG with lower mean differences and 95% limits of agreement (LOA) falling within 10°. Conclusions Our study demonstrates that a smartphone application is a valid and reliable assessment tool for measurement of elbow ROM in paediatric patients, and better than visualization alone. Level of evidence III
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Darsová, Denisa, Pavel Pochop, Jana Štěpánková, and Dagmar Dotřelová. "Long-term results of pars plana vitrectomy as an anti-inflammatory therapy of pediatric intermediate uveitis resistant to standard medical treatment." European Journal of Ophthalmology 28, no. 1 (2018): 98–102. http://dx.doi.org/10.5301/ejo.5001020.
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Purpose: To evaluate the efficacy of pars plana vitrectomy (PPV) as an anti-inflammatory therapy in pediatric recurrent intermediate uveitis. Methods: A retrospective study evaluated the long-term results of PPV indicated for intermediate uveitis with a mean observation period of 10.3 years (range 7-15.6 years) in 6 children (mean age 8 years, range 6-12 years). Pars plana vitrectomy was performed on 10 eyes in the standard manner and was initiated by vitreous sampling for laboratory examination. Data recorded were perioperative or postoperative vitrectomy complications, anatomic and functional results of PPV, and preoperative and postoperative best-corrected Snellen visual acuity. Results: No perioperative or postoperative complications were observed. Bacteriologic, virologic, mycotic, and cytologic analysis of the vitreous was negative in all tested children. Five eyes were subsequently operated on for posterior subcapsular cataracts. An average preoperative visual acuity of 0.32 improved to an average postoperative visual acuity of 0.8. Conclusions: In the case of systemic immunosuppressive treatment failure in pediatric uveitis, particularly in eyes with cystoid macular edema, we recommend PPV relatively early.
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McWilliams, Thomas, Joonbum Lee, Bruce Mehler, and Bryan Reimer. "Revisiting Radio Tuning: A Secondary Analysis Comparing Glance Behavior Across Five Vehicles." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 61, no. 1 (2017): 1924–28. http://dx.doi.org/10.1177/1541931213601961.
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Visual-manual demand placed on drivers through interactions with operational functions, embedded telematics, infotainment systems, and nomadic technologies has raised concerns associated with diverting attention from the roadway. This analysis draws on data from field studies of five different infotainment systems representing a range of screen placements and control characteristics that diverge in significant ways from the relatively standard car radio layout of previous generations. Participants performed a set of classic visual-manual radio tuning tasks under highway driving conditions. There were significant differences in task completion time, number of off-road glances, mean single off-road glance duration, and total off-road glance time across vehicles. These results highlight that the range of configurations appearing in modern infotainment systems have changed the extent to which they can be used in the classic radio tuning task to provide a standard demand benchmark.
Dissertations / Theses on the topic "Standard visual range"
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Thomas, Tim. "CAPS: AN EGLIN RANGE STANDARD FOR PC-BASED TELEMETRY DATA REDUCTION." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/607489.
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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaA need exists to provide a flexible data reduction tool that minimizes software development costs and reduces analysis time for telemetry data. The Common Airborne Processing System (CAPS), developed by the Freeman Computer Sciences Center at Eglin AFB, Florida, provides a generalpurpose data reduction capability for digitally recorded data on a PC. Data from virtually any kind of MIL-STD-1553 message or Pulse Code Modulation (PCM) frame can be extracted and converted to engineering units using a parameter dictionary that describes the data format. The extracted data can then be written to a file, ASCII or binary, with a great deal of flexibility in the output format. CAPS has become the standard for digitally recorded data reduction on a PC at Eglin. New features, such as composing derived parameters using mathematical expressions, are being added to CAPS to make it an even more productive data reduction tool. This paper provides a conceptual overview of the CAPS version 2.3 software.
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Jacob, Mary Katherine. "Atmospheric Visibility Assessment for Urban Areas Using Photographic Slides and Optical Densitometry." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc500484/.
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The factors involved in calculating Standard Visual Range (SVR) are discussed, and a comparison is made between the visibility reported by airport observers and the photographic slide/ optical densitometer method of calculating SVR. Using slides of Houston, Texas, from the fall and winter of 1988-89, it was found that the altitude at which the contrast measurements are made significantly affects the SVR. Also an index for predicting high and low humidity was developed using the blue/red ratio of the log exposure of the sky, and sun/shade target condition.
Books on the topic "Standard visual range"
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Frisken, Amanda. Graphic News. University of Illinois Press, 2020. http://dx.doi.org/10.5622/illinois/9780252042980.001.0001.
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This book explores sensationalism as it took hold of U.S. media between 1870 and 1900. During this period, print news publishers became adept at translating stories about sex, crime, and violence into emotion-based pictures. Analysis of significant episodes in media history shows how a range of news media producers engaged with the sensational style. As they pioneered the art of visual journalism, news publishers conveyed racial, class, and gender anxieties in a complex dialogue with audiences that established precedents for modern media. Prominent cases – obscenity litigation, anti-Chinese violence, the Ghost Dance, Jim Crow-era lynching, and domestic violence – demonstrate how efforts to maximize the dramatic power of the news transformed everyday reporting and established standards for visual journalism. Commercial newspaper editors exploited sensationalism’ economic benefits, while marginalized groups and social activists experimented with its power to challenge negative stereotyping and mobilize their own constituencies. By the 1890s, a wide range of publications had come to embrace, adapt, and expand the sensational style through news illustration – albeit in different ways for different audiences. The patterns prevalent in entertainment publications infiltrated the commercial dailies, and even low-budget political news sheets: few publications could afford to resist borrowing from the sensational toolkit. As sensationalism increasingly pervaded visual journalism, the very nature of the news changed.
Book chapters on the topic "Standard visual range"
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Murrell, T. Scott, and Dharma Pitchay. "Evaluating Plant Potassium Status." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_9.
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AbstractSeveral methods exist for evaluating plant nutritional status. Looking for visual deficiency symptoms is perhaps the simplest approach, but once symptoms appear, crop performance has already been compromised. Several other techniques have been developed. All of them require correlation studies to provide plant performance interpretations. Reflectance is a remote sensing technique that detects changes in light energy reflected by plant tissue. It has proven successful in detecting nutrient deficiencies but does not yet have the ability to discriminate among more than one deficiency. Chemical assays of leaf tissue, known as tissue tests, require destructive sampling but are the standard against which other assessments are compared. Sufficiency ranges provide concentrations of each nutrient that are considered adequate for crop growth and development. They consider nutrients in isolation. Other approaches have been developed to consider how the concentration of one nutrient in tissue impacts the concentrations of other nutrients. These approaches strive to develop guidelines for maintaining nutrient balance within the plant. All approaches require large data sets for interpretation.
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Hara, Kenji. "Estimating Visual Saliency for Omnidirectional HDR Images." In Analyzing Future Applications of AI, Sensors, and Robotics in Society. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3499-1.ch015.
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A unified decomposition-and-integration-based framework is presented herein for the visual saliency estimation of omnidirectional high dynamic range (HDR) images, which allows straightforward reuse of existing saliency estimation method for typical images with narrow field-of-view and low dynamic range (LDR). First, the proposed method decomposes a given omnidirectional HDR image into multiple partially overlapping LDR images with quasi-uniform spatial resolution and without polar singularities, both spatially and in intensity using a spherical overset grid and a tone-mapping-based synthesis of imaginary multiexposure images. For each decomposed image, a standard saliency estimation method is then applied for typical images. Finally, the saliency map of each decomposed image is optimally integrated from the coordinate system of the overset grid and LDR back to the representation of the coordinate system and HDR of the original image. The proposed method is applied to actual omnidirectional HDR images and its effectiveness is demonstrated.
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Penman, Alan D., Kimberly W. Crowder, and William M. Watkins. "Intraocular Pressure Control and Long-Term Visual Field Loss in Open-Angle Glaucoma." In 50 Studies Every Ophthalmologist Should Know. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780190050726.003.0016.
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The Collaborative Initial Glaucoma Treatment Study (CIGTS) was a randomized clinical trial to determine whether patients with newly diagnosed open-angle glaucoma (OAG) were managed better by initial treatment with medications (using a stepped regimen of medications starting initially with a topical beta-blocker) or by immediate filtration surgery (trabeculectomy with or without 5-fluorouracil). Although the surgery group achieved a lower mean intraocular pressure (IOP) than the medication group, both groups had similarly low rates of visual field progression. Three measures of IOP fluctuation over extended time, the range of IOP, the standard deviation of IOP, and the maximum IOP, seem to play an important role in visual field progression The results showed that more aggressive treatment was warranted when undue elevation or variation in IOP measures is observed.
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Jacobs, Julia. "High-Frequency Oscillations (HFO)." In Invasive Studies of the Human Epileptic Brain, edited by Samden D. Lhatoo, Philippe Kahane, and Hans O. Lüders. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198714668.003.0011.
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High-frequency oscillations (HFO) are new EEG biomarkers for epileptic tissue. These oscillations range in frequencies from 80 to 500 Hz and can be recorded with standard intracranial macroelectrodes. During the presurgical assessment of patients with refractory epilepsy, HFO have been found to occur mainly over seizure onset areas. HFO might co-occur with epileptic spikes, but are more specific to epileptic tissue than epileptic spikes. Several retrospective studies showed a correlation between the removal of brain areas generating HFO and postsurgical seizure freedom. In addition to demonstrating the clinical value of HFO analysis, this chapter provides a detailed introduction to the techniques for analysing HFO, including recording techniques and visual and automatic detection tools, and to interpretation of the results. It also reviews methodological challenges such as the occurrence of physiological HFO and the variability of HFO rates between patients and brain regions.
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Kelly, Brine. "Shooting Driving Scenes." In The Art of Cinematic Storytelling. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190054328.003.0019.
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Chapter 18 explains and illustrates many options for blocking and shooting driving scenes to enhance the storytelling and maintain continuity. Driving sequences usually require both exterior shots of the vehicle in motion and interior shots of the occupants as they drive, have dialogue, and look out the windows. A range of effective cinematic camera angles for exterior shots are described. The various types of exterior shots serve to say something about the vehicle itself, the environment through which a car or other vehicle is being driven, the style of driving, or the length of the trip. Some of these shots begin with transitions, while others offer cutting points to interior car scenes. Standard camera angles to cover conversation in a car are described. The right combination of shots must be chosen to ensure that the shots match and that eyelines are logical, or the shots will not meet the needs of continuity editing and clear storytelling. Many examples are described and illustrated using storyboards, with both their visual storytelling and continuity editing aspects explained.
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Hounwanou, Honoré, Laila Boumlik, and Mohamed Mejri. "Toward the Formalization of Business Process Model and Notation." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2021. http://dx.doi.org/10.3233/faia210024.
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Due to its versatility and wide variety of constructs, BPMN (Business Process Model and Notation) is today the leading standard notation for creating visual models of business or organizational processes. It is a rich and expressive graphical language specially designed to provide a notation that is easily understood by all members of a company. Sometimes, however, this large number of controls and action nodes available can become a weakness since a given semantics can be represented in many ways, causing some ambiguity and raising the question of bisimilarity between two models. Today, it is universally recognized that formal methods are useful for the specification, design and verification of almost all systems, and essential for the most critical ones. On the other hand, the Business Process Execution Language for Web Services (BPEL) is an executable language structured in blocks, supported by many execution platforms, making it possible to specify the actions in the business processes with Web services. Since BPMN and BPEL share almost the same level of abstraction, we present in this article a formalization of the BPMN language through a mapping to BPEL, aiming to remove its ambiguities, to solve the complex modeling and interaction problems and open the door to many formal analysis such as model checking. We first formalize the BPEL language using the K framework, we then map the BPMN language to this formalized version of BPEL. The K Framework is a rewriting/reachability based framework enabling language developers to formally define all programming languages. Once a language is formally specified in the K framework, the framework automatically outputs a range of formal verification tool sets, compilers, debuggers and other developer tools for it.
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Gibbons, Patti, and Carol Ng-He. "Library Exhibitions and Visual Literacy." In Visual Literacy in The Virtual Realm: The Book of Selected Readings 2021. International Visual Literacy Association, 2021. http://dx.doi.org/10.52917/ivlatbsr.2021.014.
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Library exhibitions showcase collections and can be laboratories where users apply key visual literacy skills, such as making close observations, practicing interpretation, and challenging assumptions. Library exhibitions facilitate self-directed inquiry and have a wide pedagogical range. At academic libraries, faculty include exhibition curation and viewing in their curriculum to promote scholarship and activism. Public libraries use exhibitions to cultivate civic interest and encourage intergenerational and multi-cultural learning. Across settings, exhibition experiences support visual learning, prompt critical thinking, and mobilize change. Through examining contemporary library engagement models such as the American College and Research Library’s Visual Literacy Competency Standards for Higher Education, this paper provides examples of exhibits that illustrate ACRL’s visual literacy benchmarks. Additionally, the paper provides a brief overview of recommendations for partnering with libraries to expand opportunities for visual learning.
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Chivukula, Venkata, and Michael Shur. "Web-Based Experimentation for Students with Learning Disabilities." In Developments in Engineering Education Standards. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0951-8.ch012.
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Assistive technologies can go a long way in helping learning disabled students to keep-up with their classmates. The ubiquity of internet as an active social networking, communication, and education platform has opened up a wide range of new possibilities for web-based lectures and experimentation that can be used to assist learning disabled students. To this end, the authors developed and applied Automated Internet Modeling (AIM) Lab dedicated to semiconductor device modeling and characterization. Their lab has been extensively used for teaching courses on semiconductor devices at senior and graduate levels. Recently, AIM-lab incorporated additional functionality such as You-Tube compatible on-line video feeds, audio and visual collaboration with peers via web-messaging in order to meet the needs of learning disabled students and make their learning process more effective. In this chapter, the authors focus on recent advances in the development of remote experimentation labs in the context of engineering education with an emphasis on general technological issues and specific experiments offered. Systematic evaluation of educational benefits derived from using these labs will also be presented.
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Ilhan, B., H. Yaman, H. Fathi, I. Brilakis, and R. Sacks. "Distinguishing object category properties and property ranges in the IFC standard for visual pattern recognition." In eWork and eBusiness in Architecture, Engineering and Construction. CRC Press, 2012. http://dx.doi.org/10.1201/b12516-89.
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Fleming, Jacqueline, and Amy Minix. "Supporting Visual Literacy in Nursing." In Visual Literacy in The Virtual Realm: The Book of Selected Readings 2021. International Visual Literacy Association, 2021. http://dx.doi.org/10.52917/ivlatbsr.2021.013.
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COVID-19 impacted in person learning, particularly for the health sciences. Nursing students learn valuable clinical skills in simulation labs on campus. When one university campus stopped in person instruction during the 2020 spring semester, two librarians worked together to identify resources to support a nursing course that quickly switched to remote learning. These resources ranged from library licensed content to free virtual reality simulations. In order to identify materials, the librarians first defined visual literacy within nursing, as well as met with various constituents to understand curriculum goals and needs. Making connections with both the faculty and the curriculum was the impetus for examining similarities between the Association of College and Research Libraries Visual Literacy Competency Standards and the American Association of Colleges of Nursing Clinical Resources Essentials for Baccalaureate Nursing Education. Both librarians are eager to continue working on strategically and systematically incorporating visual literacy library instruction into the nursing curriculum.
Conference papers on the topic "Standard visual range"
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Azimi, Maryam, Ronan Boitard, Panos Nasiopoulos, and Mahsa T. Pourazad. "Visual color difference evaluation of standard color pixel representations for high dynamic range video compression." In 2017 25th European Signal Processing Conference (EUSIPCO). IEEE, 2017. http://dx.doi.org/10.23919/eusipco.2017.8081455.
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Shoup, Terry E. "Using Spreadsheet Modules to Augment Tolerance Dimensioning." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57649.
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This paper presents an easy-to-use spreadsheet module in Microsoft Excel to handle the implementation of the ANSI standards for tolerance fits for shafts and collars. The module makes use of drop-down menus and an embedded Visual Basic numerical algorithm to locate the correct tolerance ranges for a shaft and collar combination for the entire range of tolerances handled by the tables published in the ANSI standard. This module allows the quick implementation of designs and features a process that is less subject to errors associated with the traditional method of reading of the tolerance tables and transferring this information manually. The method is particularly helpful to students and inexperienced designers who first encounter the need to utilize tolerances in engineering designs. The paper presents an example application to illustrate the overall utility of the module.
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Kusano, Stephanie M. "Using Modeling Software to Visualize Biomechanics in an Introductory Undergraduate Bioengineering Course." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80861.
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The modeling software MADYMO was used as a visual teaching tool for teaching human body modeling during an introductory undergraduate bioengineering course. The human body modeling lecture was covered during the six-week biomechanics section of a 15-week course. The students in this introductory bioengineering course were primarily second year, second semester students, from a wide range of engineering disciplines. Biomechanics is a challenging topic to teach to undergraduate students because of the students’ limited understanding of general mechanics and physiology. Education research has shown the effectiveness of using visual teaching tools (Felder, 1988). MADYMO is an industry-standard modeling tool for human crash response. Considering the challenges of introducing human body modeling in a single lecture to undergraduate students, we believe using MADYMO as a visual tool helps the students realize a basic understanding and appreciation for human body modeling.
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Alvarez, Estefania, Marcella E. Elpers, Hillary M. Cash, Michelle E. Wabler, and John D. DesJardins. "Assessment of Quantitative Methodology for Evaluation of Retrieved Metallic Femoral Components From Total Knee Replacements." In ASME/STLE 2011 International Joint Tribology Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ijtc2011-61169.
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The metallic surfaces of total joint replacement components are subject to surface damage and roughening that can severely limit the service lifetime of the bearing system. To date, there are no standards by which to characterize the severity and modes of this critical surface damage, and therefore it remains difficult to accurately assess how femoral damage influences total joint replacement longevity. This study introduces a novel femoral component damage scoring methodology that combines a semi-quantitative visual damage scoring assessment and a fully quantitative non-contact characterization of the articular surface profile. The femoral surface was divided into 6 pre-determined zones, with 5 possible modes of damage and 4 (0–3) levels of damage severity, to produce a maximum possible damage score of 90. The 5 modes of metallic surface damage were; number of scratches, scratch depth, third body wear, abrasion and pitting. Three independent examiners were trained and then evaluated 33 retrieved TKRs systems (n = 11 Oxinium and n = 23 CoCr) with in-situ times of 3.6 ± 4.2 yrs (range of 0.1–20 yrs). The average damage score was 19.9 ± 30.8 with an inter-observer variability of only 1.5% Articular damage mode frequency was calculated and found to be 61% for scratching, 15% for pitting and 52% for abrasion. The quantitative characterization of the articular surface profile of the femoral component using non-contact profilometry (n = 150/retrieved component) illustrated a positive correlation between damage score and the average surface roughness for implants with an Ra greater than 65 nm (R2 of 0.865). This methodology identified a critical Ra threshold above the standard manufacturing tolerance (∼50nm) wherein visual damage scoring was predictive of increases in quantitative surface roughness. This study validates the use of this novel methodology across most TKR material pairings. Future work will correlate damage scores and measured surface roughness with patient demographic and functional information.
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Vasisht, Soumya, and Mehran Mesbahi. "A Data-Driven Approach for UAV Tracking Control." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5091.
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This paper presents a simple data-driven approach to improve ground target tracking by an unmanned aerial vehicle (UAV) for certain classes of target trajectories from learned local linear models. The UAV is assumed to be a small fixed-wing aircraft equipped with a gimbaled camera for visual sensing. We attempt to build a controller from measurement data by building an augmented Linear Quadratic Regulator (LQR) system from an approximated linear operator that indirectly captures the properties of the target system. We evaluate the relative performance improvement gained by this data-driven approach versus the standard target following LQR system and provide bounds for this improved performance. We also consider the effect of sensor noise on the tracking performance resulting from the noisy and erroneous datasets. We demonstrate the performance of this method on a range of numerical data representing different classes of target trajectories.
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Pukhova, Ekaterina, and Vladislav Vereshchagin. "Compensation of defects in printing process with histogram methods." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p41.
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A method of image preparation for printing reproduction is suggested. This method allows to automatically compensate transformations that occur during reproduction, by analyzing a histogram of test chart image and based on it, creating a compensation pre-correction function. It also takes into consideration the visual perception of images. Pre-correction function is applied to images at the prepress stage after all other corrections. It is aimed to compensate defects, occurring at the printing stage, caused by the process of tone value increase and restriction of tonal range reproduction. It is suggested to use a test chart, which is a gradient with an even increase of lightness in the range from 0 to 255. After printing the test chart its digital image is created by scanning. Then Gaussian filter is applied to the image with parameters according to the visual perception, and lightness distribution histogram is calculated. This histogram will have changes in lightness distribution in comparison with the original digital image. These changes will correspond to the influence of tone value increasing process during printing. The cumulative sum is calculated from the received histogram, and the pre-correction is being formed. And this precorrection applies to an image, prepared for printing in similar conditions as test chart. The algorithm was written on Python and allows to create a pre-correction using a press sheet with the test chart. It is shown that the use of the suggested method gives a positive result and doesn’t require expensive measurement equipment. Having a scanner calibrated for linear transmission of lightness and developed programming module is enough. This method was tested on electrographic printing equipment on three different types of paper. Statistic parameters of a histogram, such as mean, standard deviation and the Skewness, were used for evaluation. It is shown that the suggested method can be used as part of an automatized system based on histogram methods for image preparation before printing.
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Gullaksen, Joannes. "Software Application Based on Subsea Engineering Design Codes." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18063.
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Abstract Development of software application for subsea engineering design and analysis is to a large extent based on codes and standards used in the offshore industry when considering subsea pipelines. In this paper a software is described which main purpose is to facilitate the design and analysis process and such that results and documentation are automatically generated to increase quality of documentation. Current scope is a standard calculation tool covering different aspects of design in compliance with relevant offshore codes. A modularization technique is used to divide the software system into multiple discrete and independent modules based on offshore codes, which are capable of carrying out task(s) independently. All modules in range operate from a project model that is accessed directly by other modules for analysis and performance prediction and allows design changes to flow through automatically to facilitate smooth communication and coordination between different design activities. All the modules have a number of common design features. The quality of an implementation of each offshore code in independent software modules is measured by defining the level of inter-dependability among modules and their interaction among them, and by defining the degree of intra-dependability within elements of a module. This modularization technique also includes other benefits, such as ease of maintenance and updates. The improvements are related to the objectives of a state-of-the-art procedure of performing engineering, design and analysis by use of offshore codes implemented in a software application. The application is developed in .NET C# language with MS Visual Studio Technology that provides a powerful graphical user interface well integrated in windows environment.
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Shaffer, James, and Omid Askari. "A New Electrode Design for Constant Volume Combustion Chamber." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24168.
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Abstract The current method of achieving center chamber ignition in the Plasma Combustion Research Laboratory’s (PCRL) Constant Volume Combustion Chamber (CVCC) utilizes either a standard or modified spark plug. The standard spark plug achieves a representation of side wall ignition (similar to a combustion engine) while modified sparkplugs have an extended electrode to allow for a center camber ignition. Two of these modified spark plugs are placed on both sides of the chamber and can effectively seal and isolate the chamber from the electrode. However, the process of welding electrode material to the spark plug is time consuming and requires a large number of modified electrodes to effectively test multiple different spark gap sizes. Also, the process of cleaning the electrode after experimentation shortens the electrode over time with no method of compensation other than creating a new electrode. The new electrode design aims to reduce the structural weakness by removing the welded joint as well as allowing for linear adjustment between testing while remaining firm during testing. The new design presented utilizes high-temperature epoxy, ceramic and grafoil seals to make adjustments easy and precise. The design was analyzed, prior to building and testing, based on the stress induced from the sealant, the total rated voltage, the rated temperature, and the fracture stress of the ceramic material. The stress induced in the electrode device was analyzed with FEA and the results were found to be within the limits of the material in terms of the compressive and fracture strength. The maximum voltage was found to be around 30 kV. The design is tested with 3 different electrode sizes where the largest electrode of 1.3 mm (0.05 in) has the same diameter as the current experimental set up. Two smaller electrodes 1 mm and 0.5 mm (0.04 in and 0.02 in) are tested as well to show the range and capabilities of the new system. The voltage and current data of the new and old system are compared and are found to be statistically similar within a 90 percent confidence level. The new electrodes is also compared to the previous system in terms of electrical resistance, the peak power each system can provide to the plasma, the visual shape and duration of the plasma through high speed photography. The range of operation for a successful design includes pressures from 20 mTorr to 40 atm, temperatures up to 280 C, and voltages up to 25 kV.
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Mélot, Mickaël, and Julien Berthon. "On-Line Phased-Array Ultrasonic System: OPUS to Control Pressure Sheath of Flexible Pipe During Manufacturing." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54473.
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Flexible pipes are made up of several different layers specifically designed to meet the requirements of our clients and API17J / ISO13628-2. In the pursuit of ever more efficient and reliable solutions, even in the world’s harshest and deepest offshore environments, TECHNIP’s R&D activity is focused on extending its product range by introducing new products and materials. As part of this innovation program, new polymers are constantly being investigated to assess their potential as a pressure sheath. The pressure sheath is the most critical thermoplastic sheath within the structure. Its role is to contain internal fluid and transfer internal pressure to the pressure vault layer outside it. To fulfill that mission, this polymer must be leakproof and perform over wide temperature and pressure range. In operation condition, the presence of small flaws within the pressure sheath could propagate leading to failure and significant environmental and operational damages. Therefore, the manufacturing of such a polymer layer must conform with ever-higher levels of reliability and quality. This is the reason why a visual inspection of pressure sheath according to API17J / ISO13628-2 standards is mandatory. As a leitmotiv, TECHNIP dedicates a lot of effort, not only to extend the limits of the possible by introducing new materials, but also to take inspection further beyond standard requirements by developing dedicated on-line NDT control systems able to ensure layer high quality. Many people are familiar with the medical applications of ultrasonic imaging in which ultrasonic waves are used to create highly detailed cross-sectional pictures of internal organ. Medical echography is commonly performed with specialized multielement probe known as phased-array and their accompanying hardware and software. The applications of ultrasonic phased-array technology are not limited to medical diagnosis and in recent years, increasing use of these systems can be observed in industrial environment. Nevertheless, although phased-array systems on the market can provide new levels of information and visualization, they are manually and locally operated and are inappropriate to control polymer sheath over several kilometers during manufacturing. This paper presents a specific and automated ultrasonic system dedicated to manufacturing control of thermoplastics such as the pressure sheath. Developed by TECHNIP, and based on cutting edge ultrasonic technology used in aerospace and medicine, OPUS is a world-class NDT system able to prove that our pressure sheaths meet design criteria and achieve the highest quality level.
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Manna, Soumya K., and Venketesh N. Dubey. "Assessment of Joint Parameters in a Kinect Sensor Based Rehabilitation Game." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97519.
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Abstract A Kinect sensor based basketball game is developed for delivering post-stroke exercises in association with a newly developed elbow exoskeleton. Few interesting features such as audio-visual feedback and scoring have been added to the game platform to enhance patient’s engagement during exercises. After playing the game, the performance score has been calculated based on their reachable points and reaching time to measure their current health conditions. During exercises, joint parameters are measured using the motion capture technique of Kinect sensor. The measurement accuracy of Kinect sensor is validated by two comparative studies where two healthy subjects were asked to move elbow joint in front of Kinect sensor wearing the developed elbow exoskeleton. In the first study, the joint information collected from Kinect sensor was compared with the exoskeleton based sensor. In the next study, the length of upperarm and forearm measured by Kinect were compared with the standard anthropometric data. The measurement errors between Kinect and exoskeleton are turned out to be in the acceptable range; 1% for subject 1 and 0.44% for subject 2 in case of joint angle; 5.55% and 3.58% for subject 1 and subject 2 respectively in case of joint torque. The average errors of Kinect measurement as compared to the anthropometric data of the two subjects are 16.52% for upperarm length and 9.87% for forearm length. It shows that Kinect sensor can measure the activity of joint movement with a minimum margin of error.