Sample records for subjects displayed greater

  1. A novel form of spontaneous tool use displayed by several captive greater vasa parrots (Coracopsis vasa). (United States)

    Lambert, Megan L; Seed, Amanda M; Slocombe, Katie E


    Parrots are frequently cited for their sophisticated problem-solving abilities, but cases of habitual tool use among psittacines are scarce. We report the first evidence, to our knowledge, of tool use by greater vasa parrots (Coracopsis vasa). Several members of a captive population spontaneously adopted a novel tool-using technique by using pebbles and date pits either (i) to scrape on the inner surface of seashells, subsequently licking the resulting calcium powder from the tool, or (ii) as a wedge to break off smaller pieces of the shell for ingestion. Tool use occurred most frequently just prior to the breeding season, during which time numerous instances of tool transfer were also documented. These observations provide new insights into the tool-using capabilities of parrots and highlight the greater vasa parrot as a species of interest for studies of physical cognition. © 2015 The Author(s).

  2. Subjective usability of speech, touch and gesture in a heterogeneous multi-display environment

    NARCIS (Netherlands)

    Jong, A.P.J. de; Tak, S.; Toet, A.; Schultz, S.; Wijbenga, J.P.; Erp, J.B.F. van


    Several interaction techniques have been proposed to enable transfer of information between different displays in heterogeneous multi-display environments. However, it is not clear whether subjective user preference for these different techniques depends on the nature of the displays between which

  3. Female Sprague-Dawley rats display greater appetitive and consummatory responses to alcohol. (United States)

    Nieto, Steven J; Kosten, Therese A


    The narrowing of the gender gap in alcohol drinking patterns is a concern because women are more susceptible to adverse health consequences of alcohol use. Animal models of alcohol-seeking and -consuming are useful to delineate sex differences to test for effective sex-specific pharmacological treatments. We investigated potential sex differences in appetitive and consummatory responses to alcohol. Appetitive behaviors included numbers of head entries into the dipper access area and active lever presses. Consummatory behaviors included number of reinforcers delivered and consumed. Male and female Sprague-Dawley rats were placed on an overnight alcohol (10%) drinking schedule and trained to lever press for alcohol (10% solution). Separate groups of male and female animals had access to water overnight and were trained to lever press for sucrose (3% solution). Tests were conducted under a progressive ratio schedule of reinforcement. Alcohol-responding females demonstrated higher alcohol intake overnight and showed greater appetitive and consummatory responses compared to males. Similar sex differences were seen in the sucrose group. Effect sizes indicated greater sex differences in consummatory measures in the alcohol vs. sucrose groups. Conversely, greater sex differences in appetitive behaviors were observed in the sucrose vs. alcohol groups. Overall, the magnitude of the sex differences was stronger for appetitive behaviors compared to consummatory behaviors. Findings of quantitative sex differences in appetitive and consummatory behaviors for alcohol and for the natural reinforcer, sucrose, suggest this procedure is useful to assess efficacy of sex-specific treatments aimed at reducing appetitive and consummatory responses to alcohol. Copyright © 2017 Elsevier B.V. All rights reserved.

  4. Modeling the subjective quality of highly contrasted videos displayed on LCD with local backlight dimming. (United States)

    Mantel, Claire; Bech, Søren; Korhonen, Jari; Forchhammer, Søren; Pedersen, Jesper Melgaard


    Local backlight dimming is a technology aiming at both saving energy and improving visual quality on television sets. As the rendition of the image is specified locally, the numerical signal corresponding to the displayed image needs to be computed through a model of the display. This simulated signal can then be used as input to objective quality metrics. The focus of this paper is on determining which characteristics of locally backlit displays influence quality assessment. A subjective experiment assessing the quality of highly contrasted videos displayed with various local backlight-dimming algorithms is set up. Subjective results are then compared with both objective measures and objective quality metrics using different display models. The first analysis indicates that the most significant objective features are temporal variations, power consumption (probably representing leakage), and a contrast measure. The second analysis shows that modeling of leakage is necessary for objective quality assessment of sequences displayed with local backlight dimming.

  5. Modeling the Subjective Quality of Highly Contrasted Videos Displayed on LCD With Local Backlight Dimming

    DEFF Research Database (Denmark)

    Mantel, Claire; Bech, Søren; Korhonen, Jari


    signal can then be used as input to objective quality metrics. The focus of this paper is on determining which characteristics of locally backlit displays influence quality assessment. A subjective experiment assessing the quality of highly contrasted videos displayed with various local backlight...

  6. Greater impairment of postprandial triacylglycerol than glucose response in metabolic syndrome subjects with fasting hyperglycaemia. (United States)

    Jackson, Kim G; Walden, Charlotte M; Murray, Peter; Smith, Adrian M; Minihane, Anne M; Lovegrove, Julie A; Williams, Christine M


    Studies have started to question whether a specific component or combinations of metabolic syndrome (MetS) components may be more important in relation to cardiovascular disease risk. Our aim was to examine the impact of the presence of raised fasting glucose as a MetS component on postprandial lipaemia. Men classified with the MetS underwent a sequential test meal investigation, in which blood samples were taken at regular intervals after a test breakfast (t=0 min) and lunch (t=330 min). Lipids, glucose and insulin were measured in the fasting and postprandial samples. MetS subjects with 3 or 4 components were subdivided into those without (n=34) and with (n=23) fasting hyperglycaemia (≥5.6 mmol/l), irrespective of the combination of components. Fasting lipids and insulin were similar in the two groups, with glucose significantly higher in the men with glucose as a MetS component (Ppostprandial triacylglycerol (TAG) response in men with fasting hyperglycaemia. Greater glucose AUC (Pglucose to be an important predictor of the postprandial TAG and glucose response. Our data analysis has revealed a greater impairment of postprandial TAG than glucose response in MetS subjects with raised fasting glucose. The worsening of postprandial lipaemic control may contribute to the greater CVD risk reported in individuals with MetS component combinations which include hyperglycaemia. Copyright © 2013 Elsevier Inc. All rights reserved.

  7. Displays


    Schauer, A.


    A short review is given on new display technologies such as plasma, liquid crystals, light emitting diodes, electroluminescence and electrochromism. It is stated that thin or thick film or hybrid techniques are essential for all the different types of display. Comparing the performance data of displays the advantages, disadvantages, appropriate applications and future developments are described. Finally the display market and its growth are discussed briefly.

  8. Stress and Subjective Age: Those With Greater Financial Stress Look Older. (United States)

    Agrigoroaei, Stefan; Lee-Attardo, Angela; Lachman, Margie E


    Subjective indicators of age add to our understanding of the aging process beyond the role of chronological age. We examined whether financial stress contributes to subjective age as rated by others and the self. The participants ( N = 228), aged 26-75, were from a Boston area satellite of the Midlife in the United States (MIDUS) longitudinal study. Participants reported how old they felt and how old they thought they looked, and observers assessed the participants' age based on photographs (other-look age), at two occasions, an average of 10 years apart. Financial stress was measured at Time 1. Controlling for income, general stress, health, and attractiveness, participants who reported higher levels of financial stress were perceived as older than their actual age to a greater extent and showed larger increases in other-look age over time. We consider the results on accelerated aging of appearance with regard to their implications for interpersonal interactions and in relation to health.

  9. A subjective evaluation of high-chroma color with wide color-gamut display (United States)

    Kishimoto, Junko; Yamaguchi, Masahiro; Ohyama, Nagaaki


    Displays tends to expand its color gamut, such as multi-primary color display, Adobe RGB and so on. Therefore displays got possible to display high chroma colors. However sometimes, we feel unnatural some for the image which only expanded chroma. Appropriate gamut mapping method to expand color gamut is not proposed very much. We are attempting preferred expanded color reproduction on wide color gamut display utilizing high chroma colors effectively. As a first step, we have conducted an experiment to investigate the psychological effect of color schemes including highly saturated colors. We used the six-primary-color projector that we have developed for the presentation of test colors. The six-primary-color projector's gamut volume in CIELAB space is about 1.8 times larger than the normal RGB projector. We conducted a subjective evaluation experiment using the SD (Semantic Differential) technique to find the quantitative psychological effect of high chroma colors.

  10. Positive youth development programs for adolescents with greater psychosocial needs: subjective outcome evaluation over 3 years. (United States)

    Shek, Daniel T L; Sun, Rachel C F


    This study examined the views of 153,761 students participating in a positive youth development program designed for participants with greater psychosocial needs (the Tier 2 Program) in the context of the Project P.A.T.H.S. in Hong Kong. The program was implemented in the extension phase of the project from 2009/10 to 2011/12 school years. A validated subjective outcome evaluation scale was used to assess the views of the program participants toward the program qualities, implementer qualities, and program effectiveness after completion of the program. Nine datasets were used which were derived from the aggregated reports submitted by social service providers designing the Tier 2 Program. Participants generally held favorable views of program qualities, implementer qualities, as well as program effectiveness of the Tier 2 Program. Some small grade and program differences on subjective outcome evaluation were also found. Both program qualities and implementer qualities were significant predictors of program effectiveness in different grades. Consistent with the findings of the initial phase of the Project P.A.T.H.S., the present study suggests that the Tier 2 Program of the Project P.A.T.H.S. in Hong Kong is perceived favorably by program participants and its perceived effectiveness was high. Significant but small grade and program approach differences on subjective outcome evaluation were found. Both program and implementer qualities were predictive of perceived program effectiveness in different grades. Copyright © 2014 North American Society for Pediatric and Adolescent Gynecology. Published by Elsevier Inc. All rights reserved.

  11. Investigating subjective attributes of quality for videos displayed with local backlight dimming

    DEFF Research Database (Denmark)

    Mantel, C.; Bech, Søren; Forchhammer, S.


    This paper investigates what composes the quality of videos displayed on LCD with local backlight dimming. In a subjective experiment, participants assessed the level of nine attributes defined using the Qualitative Descriptive Analysis method. Results show that three attributes (Contrast, Change...

  12. Dendritic Cells from Aged Subjects Display Enhanced Inflammatory Responses to Chlamydophila pneumoniae (United States)

    Prakash, Sangeetha; Agrawal, Sudhanshu; Gupta, Sudhir; Peterson, Ellena M.


    Chlamydophila pneumoniae (CPn) is a common respiratory pathogen that causes a chronic and persistent airway infection. The elderly display an increased susceptibility and severity to this infection. However, the underlying mechanisms are not well understood. Dendritic cells (DCs) are the initiators and regulators of immune responses. Therefore, we investigated the role of DCs in the age-associated increased CPn infection in vitro in humans. Though the expression of activation markers was comparable between the two age groups, DCs from aged subjects secreted enhanced levels of proinflammatory mediators such as TNF-α and CXCL-10 in response to CPn. In contrast, the secretion of IL-10 and innate interferons, IFN-α and IFN-λ, was severely impaired in DCs from aged donors. The increased activation of DCs from aged subjects to CPn also resulted in enhanced proliferation of CD4 and CD8 T cells in a DC-T coculture. Furthermore, T cells primed with CPn-stimulated DCs from aged subjects secreted increased levels of IFN-γ and reduced levels of IL-10 compared to DCs obtained from young subjects. In summary, DCs from the elderly displayed enhanced inflammatory response to CPn which may result in airway remodeling and increase the susceptibility of the elderly to respiratory diseases such as asthma. PMID:25253920

  13. Greater severity of new onset asthma in allergic subjects who smoke: a 10-year longitudinal study

    Directory of Open Access Journals (Sweden)

    Antic Tjana


    Full Text Available Abstract Background Little is known about the association between cigarette smoking and asthma severity. We assessed smoking as a determinant of disease severity and control in a cohort of clinic-referred allergic subjects who developed new onset asthma. Methods Allergic rhinitis subjects with no asthma (n = 371 were followed-up for 10 years and routinely examined for asthma diagnosis. In those who developed asthma (n = 152, clinical severity and levels of asthma control were determined. Among these subjects, 74 (48.7% were current smokers, 17 (11.2% former smokers, and 61 (40.1% never smokers. Results When comparing current or past smokers to never smokers they had a higher risk of severe asthma in the univariate analysis, which became non-significant in the multivariate analysis. On the other hand, the categories of pack-years were significantly related to severe asthma in a dose response relationship in both the univariate and multivariate analysis: compared to 0 pack years, those who smoked 1-10 pack-years had an OR(95% CI of 1.47(0.46-4.68, those who smoked 11-20 pack-years had an OR of 2.85(1.09-7.46 and those who smoked more than 20 pack-years had an OR of 5.59(1.44-21.67 to develop more severe asthma. Smokers with asthma were also more likely to have uncontrolled disease. A significant dose-response relationship was observed for pack-years and uncontrolled asthma. Compared to 0 pack years, those who smoked 1-10 pack-years had an OR of 5.51(1.73-17.54 and those who smoked more than 10 pack-years had an OR of 13.38(4.57-39.19 to have uncontrolled asthma. Conclusions The current findings support the hypothesis that cigarette smoking is an important predictor of asthma severity and poor asthma control.

  14. Subjective quality of videos displayed with local backlight dimming at different peak white and ambient light levels

    DEFF Research Database (Denmark)

    Mantel, Claire; Korhonen, Jari; Forchhammer, Søren


    In this paper the influence of ambient light and peak white (maximum brightness) of a display on the subjective quality of videos shown with local backlight dimming is examined. A subjective experiment investigating those factors is set-up using high contrast test sequences. The results are firstly...

  15. Middle-aged Subjects With Habitual Low-speed Cycling Exercise Have Greater Mononuclear Cell Responsiveness Against Human Hepatitis B Virus Surface Antigen

    Directory of Open Access Journals (Sweden)

    Kuen-Chang Hsieh


    Conclusion: The results reveal that the immune response of MNC, which are stimulated by PHA to suppress hepatitis B surface antigen expression, is greater in middle-aged subjects with low-speed HCE than in sedentary subjects.

  16. Subjective comparison of brightness preservation methods for local backlight dimming displays

    DEFF Research Database (Denmark)

    Korhonen, Jari; Mantel, Claire; Forchhammer, Søren


    Local backlight dimming is a popular technology in high quality Liquid Crystal Displays (LCDs). In those displays, the backlight is composed of contributions from several individually adjustable backlight segments, set at different backlight luminance levels in different parts of the screen......, according to the luma of the target image displayed on LCD. Typically, transmittance of the liquid crystal cells (pixels) located in the regions with dimmed backlight is increased in order to preserve their relative brightness with respect to the pixels located in the regions with bright backlight...... ordering to compare the relevant methods on a real-life LCD with a local backlight dimming capability. In general, our results show that locally adapted brightness preservation methods produce more preferred visual outcome than global methods, but dependency on the content is also observed. Based...

  17. Investigating subjective attributes of quality for videos displayed with local backlight dimming

    DEFF Research Database (Denmark)

    Mantel, Claire; Bech, Søren; Forchhammer, Søren


    This paper investigates what composes the quality of videos displayed on LCD with local backlight dimming. In a sub- jective experiment, participants assessed the level of nine attributes defined using the Qualitative Descriptive Anal- ysis method. Results show that three attributes (Contrast...

  18. Perceived Intensity of Emotional Point-Light Displays Is Reduced in Subjects with ASD (United States)

    Krüger, Britta; Kaletsch, Morten; Pilgramm, Sebastian; Schwippert, Sven-Sören; Hennig, Jürgen; Stark, Rudolf; Lis, Stefanie; Gallhofer, Bernd; Sammer, Gebhard; Zentgraf, Karen; Munzert, Jörn


    One major characteristic of autism spectrum disorder (ASD) is problems with social interaction and communication. The present study explored ASD-related alterations in perceiving emotions expressed via body movements. 16 participants with ASD and 16 healthy controls observed video scenes of human interactions conveyed by point-light displays. They…

  19. Image size invariant visual cryptography for general access structures subject to display quality constraints. (United States)

    Lee, Kai-Hui; Chiu, Pei-Ling


    Conventional visual cryptography (VC) suffers from a pixel-expansion problem, or an uncontrollable display quality problem for recovered images, and lacks a general approach to construct visual secret sharing schemes for general access structures. We propose a general and systematic approach to address these issues without sophisticated codebook design. This approach can be used for binary secret images in non-computer-aided decryption environments. To avoid pixel expansion, we design a set of column vectors to encrypt secret pixels rather than using the conventional VC-based approach. We begin by formulating a mathematic model for the VC construction problem to find the column vectors for the optimal VC construction, after which we develop a simulated-annealing-based algorithm to solve the problem. The experimental results show that the display quality of the recovered image is superior to that of previous papers.

  20. Clobazam and its active metabolite N-desmethylclobazam display significantly greater affinities for α₂- versus α₁-GABA(A-receptor complexes.

    Directory of Open Access Journals (Sweden)

    Henrik Sindal Jensen

    Full Text Available Clobazam (CLB, a 1,5-benzodiazepine (BZD, was FDA-approved in October 2011 for the adjunctive treatment of seizures associated with Lennox-Gastaut syndrome (LGS in patients 2 years and older. BZDs exert various CNS effects through allosteric modulation of GABAA receptors. The structurally distinct, 1,4-BZD clonazepam (CLN is also approved to treat LGS. The precise mechanisms of action and clinical efficacy of both are unknown. Data show that the GABAA α₁-subunit-selective compound zolpidem [ZOL] exhibits hypnotic/sedative effects. Conversely, data from knock-in mice carrying BZD binding site mutations suggest that the α₂ subunit mediates anticonvulsant effects, without sedative actions. Hence, the specific pattern of interactions across the GABAA receptor complexes of BZDs might be reflected in their clinical efficacies and adverse effect profiles. In this study, GABAA-receptor binding affinities of CLB, N-desmethylclobazam (N-CLB, the major metabolite of CLB, CLN, and ZOL were characterized with native receptors from rat-brain homogenates and on cloned receptors from HEK293 cells transfected with combinations of α (α₁, α₂, α₃, or α₅, β₂, and γ₂ subtypes. Our results demonstrate that CLB and N-CLB have significantly greater binding affinities for α₂- vs. α₁-receptor complexes, a difference not observed for CLN, for which no distinction between α₂ and α₁ receptors was observed. Our experiments with ZOL confirmed the high preference for α₁ receptors. These results provide potential clues to a new understanding of the pharmacologic modes of action of CLB and N-CLB.

  1. Subjectivity

    Directory of Open Access Journals (Sweden)

    Jesús Vega Encabo


    Full Text Available In this paper, I claim that subjectivity is a way of being that is constituted through a set of practices in which the self is subject to the dangers of fictionalizing and plotting her life and self-image. I examine some ways of becoming subject through narratives and through theatrical performance before others. Through these practices, a real and active subjectivity is revealed, capable of self-knowledge and self-transformation. 

  2. Effects of Visual Communication Tool and Separable Status Display on Team Performance and Subjective Workload in Air Battle Management

    National Research Council Canada - National Science Library

    Schwartz, Daniel; Knott, Benjamin A; Galster, Scott M


    ... ambient cabin noise while performing several visual and manual tasks. The purpose of this study is to compare team performance and subjective workload on a simulated AWACS scenario, for two conditions of communication...

  3. Gut-associated plasmacytoid dendritic cells display an immature phenotype and upregulated granzyme B in subjects with HIV/AIDS

    Directory of Open Access Journals (Sweden)

    Sergei V Boichuk


    Full Text Available Plasmacytoid dendritic cells in the periphery of subjects with HIV/AIDS decrease over time and the fate of these cells has been the subject of ongoing investigation. Previous studies using animal models as well as studies with humans suggest that these cells may redistribute to the gut. Other studies using animal models propose that the periphery pDCs are depleted and gut is repopulated with naïve pDCs from the bone marrow. In the present study, we utilized immunohistochemistry to survey duodenum biopsies of subjects with HIV/AIDS and controls. We observed that subjects with HIV/AIDS had increased infiltration of Ki-67+/CD303+ pDCs, a phenotype consistent with bone marrow derived pre-pDCs. In contrast, Ki-67+/CD303+ pDCs were not observed in control biopsies. We additionally observed that gut-associated pDCs in HIV/AIDS cases upregulate the proapototic enzyme granzyme B; however, no granzyme B was observed in the pDCs of control biopsies. Our data are consistent with reports in animal models that suggest periphery pDCs are depleted by exhaustion and that naïve pDCs egress from the bone marrow and ultimately infiltrate the gut mucosa. Additionally, our observation of granzyme B upregulation in naïve pDCs may identify a contributing factor to the gut pathology associated with HIV infection.

  4. Greater London. (United States)


    Greater London, composed of 14 inner boroughs and 19 outer ones, covers 1,579 square kilometers and has a population density of 77.9 persons per hectare. From 1971-1981, Greater London decreased in population by 10%, declining from 7.45 million to 6.71 million. All outer boroughs and 13 inner boroughs lost population in the 1970s; only the historic financial and business center--the City of London--showed a population increase. 48% of the population is male and somewhat over 60% of the total population is between 16 and pensionable age. Inner London includes more 25-44 year olds than Outer London. In Greater London 18% of the population was born in foreign countries, with almost a quarter of Inner London's residents being foreign born. Men (15%) and women (16%) in Inner London and men (16%) and women (13%) in Outer London are likely to have more education than other Britons. Somewhat more working women are found in Greater London than in the rest of Great Britain, with the highest percentage in the City of London. 34% of British households include children under age 16, but only 29% of Greater London's households include children. Only 10% of the City of London's households have children, and 1/4 of mothers work, as compared to 13% for all of Britain. A majority of Greater London households have either no car or only 1 car since public transportation and walking to work are convenient. Greater London households declined by 5% to 2.5 million in 1981, with average household size declining from 2.8 to 2.6 persons; 26% are single-person households (55% of these are pensioners). As in the rest of Britain, more people are buying homes and renting them from local authorities. 1/3 of Greater London residents live in publicly owned housing. Some lifestyle variations exist between Greater London residents and other Britons in terms of household consumption, but these differences are not as great as geographic differences in the US, and Greater London demographic data may be

  5. Hybrid equation/agent-based model of ischemia-induced hyperemia and pressure ulcer formation predicts greater propensity to ulcerate in subjects with spinal cord injury.

    Directory of Open Access Journals (Sweden)

    Alexey Solovyev

    Full Text Available Pressure ulcers are costly and life-threatening complications for people with spinal cord injury (SCI. People with SCI also exhibit differential blood flow properties in non-ulcerated skin. We hypothesized that a computer simulation of the pressure ulcer formation process, informed by data regarding skin blood flow and reactive hyperemia in response to pressure, could provide insights into the pathogenesis and effective treatment of post-SCI pressure ulcers. Agent-Based Models (ABM are useful in settings such as pressure ulcers, in which spatial realism is important. Ordinary Differential Equation-based (ODE models are useful when modeling physiological phenomena such as reactive hyperemia. Accordingly, we constructed a hybrid model that combines ODEs related to blood flow along with an ABM of skin injury, inflammation, and ulcer formation. The relationship between pressure and the course of ulcer formation, as well as several other important characteristic patterns of pressure ulcer formation, was demonstrated in this model. The ODE portion of this model was calibrated to data related to blood flow following experimental pressure responses in non-injured human subjects or to data from people with SCI. This model predicted a higher propensity to form ulcers in response to pressure in people with SCI vs. non-injured control subjects, and thus may serve as novel diagnostic platform for post-SCI ulcer formation.

  6. Older age is associated with greater central aortic blood pressure following the exercise stress test in subjects with similar brachial systolic blood pressure. (United States)

    Kobayashi, Masatake; Oshima, Kazutaka; Iwasaki, Yoichi; Kumai, Yuto; Avolio, Alberto; Yamashina, Akira; Takazawa, Kenji


    Brachial systolic pressure (BSP) is often monitored during exercise by the stress test; however, central systolic pressure (CSP) is thought to be a more direct measure of cardiovascular events. Although some studies reported that exercise and aging may play roles in changes of both BSP and CSP, the relationship between BSP and CSP with age following the exercise stress test remains unclear. The aim of this study was to evaluate the effect of age on the relationship between BSP and CSP measured after exercise. Ninety-six subjects underwent the diagnostic treadmill exercise stress test, and we retrospectively divided them into the following 3 groups by age: the younger age group (43 ± 4 years), middle age group (58 ± 4 years), and older age group (70 ± 4 years). Subjects exercised according to the Bruce protocol, to achieve 85 % of their age-predicted maximum heart rate or until the appearance of exercise-associated symptoms. BSP, CSP, and pulse rate (PR) were measured using a HEM-9000AI (Omron Healthcare, Japan) at rest and after exercise. BSP, CSP, and PR at rest were not significantly different among the 3 groups (p = 0.92, 0.21, and 0.99, respectively). BSP and PR immediately after exercise were not significantly different among the groups (p = 0.70 and 0.38, respectively). However, CSP immediately after exercise was 144 ± 18 mmHg (younger age), 149 ± 17 mmHg (middle age), and 158 ± 19 mmHg (older age). CSP in the older age group was significantly higher than that in the younger age group (p age groups after exercise, CSP was higher in the older age group. Therefore, older subjects have a higher CSP after exercise, which is not readily assessed by conventional measurements of BSP.

  7. Auditory Display

    DEFF Research Database (Denmark)

    volume. The conference's topics include auditory exploration of data via sonification and audification; real time monitoring of multivariate date; sound in immersive interfaces and teleoperation; perceptual issues in auditory display; sound in generalized computer interfaces; technologies supporting...... auditory display creation; data handling for auditory display systems; applications of auditory display....

  8. A visual test based on a freeware software for quantifying and displaying night-vision disturbances: study in subjects after alcohol consumption

    National Research Council Canada - National Science Library

    Castro, José J; Ortiz, Carolina; Pozo, Antonio M; Anera, Rosario G; Soler, Margarita


    .... The test, performed by subjects before and after consuming alcoholic drinks, which deteriorate visual performance, evaluates the influence that alcohol consumption exerts on the visual-discrimination...

  9. Blood flow-restricted strength training displays high functional and biological efficacy in women: a within-subject comparison with high-load strength training. (United States)

    Ellefsen, Stian; Hammarström, Daniel; Strand, Tor A; Zacharoff, Erika; Whist, Jon E; Rauk, Irene; Nygaard, Håvard; Vegge, Geir; Hanestadhaugen, Marita; Wernbom, Mathias; Cumming, Kristoffer T; Rønning, Roar; Raastad, Truls; Rønnestad, Bent R


    Limited data exist on the efficacy of low-load blood flow-restricted strength training (BFR), as compared directly to heavy-load strength training (HST). Here, we show that 12 wk of twice-a-week unilateral BFR [30% of one repetition maximum (1RM) to exhaustion] and HST (6-10RM) of knee extensors provide similar increases in 1RM knee extension and cross-sectional area of distal parts of musculus quadriceps femoris in nine untrained women (age 22 ± 1 yr). The two protocols resulted in similar acute increases in serum levels of human growth hormone. On the cellular level, 12 wk of BFR and HST resulted in similar shifts in muscle fiber composition in musculus vastus lateralis, evident as increased MyHC2A proportions and decreased MyHC2X proportions. They also resulted in similar changes of the expression of 29 genes involved in skeletal muscle function, measured both in a rested state following 12 wk of training and subsequent to singular training sessions. Training had no effect on myonuclei proportions. Of particular interest, 1) gross adaptations to BFR and HST were greater in individuals with higher proportions of type 2 fibers, 2) both BFR and HST resulted in approximately four-fold increases in the expression of the novel exercise-responsive gene Syndecan-4, and 3) BFR provided lesser hypertrophy than HST in the proximal half of musculus quadriceps femoris and also in CSApeak, potentially being a consequence of pressure from the tourniquet utilized to achieve blood flow restriction. In conclusion, BFR and HST of knee extensors resulted in similar adaptations in functional, physiological, and cell biological parameters in untrained women. Copyright © 2015 the American Physiological Society.

  10. Stereo Painting Display Devices (United States)

    Shafer, David


    The Spanish Surrealist artist Salvador Dali has recently perfected the art of producing two paintings which are stereo pairs. Each painting is separately quite remarkable, presenting a subject with the vivid realism and clarity for which Dali is famous. Due to the surrealistic themes of Dali's art, however, the subjects preser.ted with such naturalism only exist in his imagination. Despite this considerable obstacle to producing stereo art, Dali has managed to paint stereo pairs that display subtle differences of coloring and lighting, in addition to the essential perspective differences. These stereo paintings require a display method that will allow the viewer to experience stereo fusion, but which will not degrade the high quality of the art work. This paper gives a review of several display methods that seem promising in terms of economy, size, adjustability, and image quality.

  11. Display elements and gaps: a comparison of flat panel display characteristics

    NARCIS (Netherlands)

    Spenkelink, G.P.J.; Besuijen, J.


    The relation between typical flat panel display characteristics and display quality was studied. Subjective preferences were obtained with respect to simulated black-on-white flat panel displays. The displays differed in the sort of separation between the display elements and the shape of these

  12. Universal Numeric Segmented Display


    Azad, Md. Abul Kalam; Sharmeen, Rezwana; S. M. Kamruzzaman


    Segmentation display plays a vital role to display numerals. But in today's world matrix display is also used in displaying numerals. Because numerals has lots of curve edges which is better supported by matrix display. But as matrix display is costly and complex to implement and also needs more memory, segment display is generally used to display numerals. But as there is yet no proposed compact display architecture to display multiple language numerals at a time, this paper proposes uniform...

  13. Ciprofibrate therapy in patients with hypertriglyceridemia and low high density lipoprotein (HDL)-cholesterol: greater reduction of non-HDL cholesterol in subjects with excess body weight (The CIPROAMLAT study) (United States)

    Aguilar-Salinas, Carlos A; Assis-Luores-Vale, Andréia; Stockins, Benjamín; Rengifo, Hector Mario; Filho, José Dondici; Neto, Abrahão Afiune; Rabelo, Lísia Marcílio; Torres, Kerginaldo Paulo; Oliveira, José Egídio Paulo de; Machado, Carlos Alberto; Reyes, Eliana; Saavedra, Victor; Florenzano, Fernando; Hernández, Ma Victoria; Jiménez, Sergio Hernandez; Ramírez, Erika; Vazquez, Cuauhtémoc; Salinas, Saul; Hernández, Ismael; Medel, Octavio; Moreno, Ricardo; Lugo, Paula; Alvarado, Ricardo; Mehta, Roopa; Gutierrez, Victor; Gómez Pérez, Francisco J


    Background Hypertriglyceridemia in combination with low HDL cholesterol levels is a risk factor for cardiovascular disease. Our objective was to evaluate the efficacy of ciprofibrate for the treatment of this form of dyslipidemia and to identify factors associated with better treatment response. Methods Multicenter, international, open-label study. Four hundred and thirty seven patients were included. The plasma lipid levels at inclusion were fasting triglyceride concentrations between 1.6–3.9 mM/l and HDL cholesterol ≤ 1.05 mM/l for women and ≤ 0.9 mM/l for men. The LDL cholesterol was below 4.2 mM/l. All patients received ciprofibrate 100 mg/d. Efficacy and safety parameters were assessed at baseline and at the end of the treatment. The primary efficacy parameter of the study was percentage change in triglycerides from baseline. Results After 4 months, plasma triglyceride concentrations were decreased by 44% (p < 0.001). HDL cholesterol concentrations were increased by 10% (p < 0.001). Non-HDL cholesterol was decreased by 19%. A greater HDL cholesterol response was observed in lean patients (body mass index < 25 kg/m2) compared to the rest of the population (8.2 vs 19.7%, p < 0.001). In contrast, cases with excess body weight had a larger decrease in non-HDL cholesterol levels (-20.8 vs -10.8%, p < 0.001). There were no significant complications resulting from treatment with ciprofibrate. Conclusions Ciprofibrate is efficacious for the correction of hypertriglyceridemia / low HDL cholesterol. A greater decrease in non-HDL cholesterol was found among cases with excess body weight. The mechanism of action of ciprofibrate may be influenced by the pathophysiology of the disorder being treated. PMID:15272932

  14. Greater robustness of second order statistics than higher order statistics algorithms to distortions of the mixing matrix in blind source separation of human EEG: implications for single-subject and group analyses. (United States)

    Lio, Guillaume; Boulinguez, Philippe


    A mandatory assumption in blind source separation (BSS) of the human electroencephalogram (EEG) is that the mixing matrix remains invariant, i.e., that the sources, electrodes and geometry of the head do not change during the experiment. Actually, this is not often the case. For instance, it is common that some electrodes slightly move during EEG recording. This issue is even more critical for group independent component analysis (gICA), a method of growing interest, in which only one mixing matrix is estimated for several subjects. Indeed, because of interindividual anatomo-functional variability, this method violates the mandatory principle of invariance. Here, using simulated (experiments 1 and 2) and real (experiment 3) EEG data, we test how eleven current BSS algorithms undergo distortions of the mixing matrix. We show that this usual kind of perturbation creates non-Gaussian features that are virtually added to all sources, impairing the estimation of real higher order statistics (HOS) features of the actual sources by HOS algorithms (e.g., Ext-INFOMAX, FASTICA). HOS-based methods are likely to identify more components (with similar properties) than actual neurological sources, a problem frequently encountered by BSS users. In practice, the quality of the recovered signal and the efficiency of subsequent source localization are substantially impaired. Performing dimensionality reduction before applying HOS-based BSS does not seem to be a safe strategy to circumvent the problem. Second order statistics (SOS)-based BSS methods belonging to the less popular SOBI family class are much less sensitive to this bias. Copyright © 2012 Elsevier Inc. All rights reserved.

  15. Science of the subjective. (United States)

    Jahn, R G; Dunne, B J


    Over the greater portion of its long scholarly history, the particular form of human observation, reasoning, and technical deployment we properly term "science" has relied at least as much on subjective experience and inspiration as it has on objective experiments and theories. Only over the past few centuries has subjectivity been progressively excluded from the practice of science, leaving an essentially secular analytical paradigm. Quite recently, however, a compounding constellation of newly inexplicable physical evidence, coupled with a growing scholarly interest in the nature and capability of human consciousness, are beginning to suggest that this sterilization of science may have been excessive and could ultimately limit its epistemological reach and cultural relevance. In particular, an array of demonstrable consciousness-related anomalous physical phenomena, a persistent pattern of biological and medical anomalies, systematic studies of mind/brain relationships and the mechanics of human creativity, and a burgeoning catalogue of human factors effects within contemporary information processing technologies, all display empirical correlations with subjective aspects that greatly complicate, and in many cases preclude, their comprehension on strictly objective grounds. However, any disciplined re-admission of subjective elements into rigorous scientific methodology will hinge on the precision with which they can be defined, measured, and represented, and on the resilience of established scientific techniques to their inclusion. For example, any neo-subjective science, while retaining the logical rigor, empirical/theoretical dialogue, and cultural purpose of its rigidly objective predecessor, would have the following requirements: acknowledgment of a proactive role for human consciousness; more explicit and profound use of interdisciplinary metaphors; more generous interpretations of measurability, replicability, and resonance; a reduction of ontological

  16. Invisible Display in Aluminum

    DEFF Research Database (Denmark)

    Prichystal, Jan Phuklin; Hansen, Hans Nørgaard; Bladt, Henrik Henriksen


    for an integrated display in a metal surface is often ruled by design and functionality of a product. The integration of displays in metal surfaces requires metal removal in order to clear the area of the display to some extent. The idea behind an invisible display in Aluminum concerns the processing of a metal...

  17. Towards Determination of Visual Requirements for Augmented Reality Displays and Virtual Environments for the Airport Tower (United States)

    Ellis, Stephen R.


    The visual requirements for augmented reality or virtual environments displays that might be used in real or virtual towers are reviewed with respect to similar displays already used in aircraft. As an example of the type of human performance studies needed to determine the useful specifications of augmented reality displays, an optical see-through display was used in an ATC Tower simulation. Three different binocular fields of view (14deg, 28deg, and 47deg) were examined to determine their effect on subjects ability to detect aircraft maneuvering and landing. The results suggest that binocular fields of view much greater than 47deg are unlikely to dramatically improve search performance and that partial binocular overlap is a feasible display technique for augmented reality Tower applications.

  18. Handbook of display technology

    CERN Document Server

    Castellano, Joseph A


    This book presents a comprehensive review of technical and commercial aspects of display technology. It provides design engineers with the information needed to select proper technology for new products. The book focuses on flat, thin displays such as light-emitting diodes, plasma display panels, and liquid crystal displays, but it also includes material on cathode ray tubes. Displays include a large number of products from televisions, auto dashboards, radios, and household appliances, to gasoline pumps, heart monitors, microwave ovens, and more.For more information on display tech

  19. Lunar Sample Display Locations (United States)

    National Aeronautics and Space Administration — NASA provides a number of lunar samples for display at museums, planetariums, and scientific expositions around the world. Lunar displays are open to the public....

  20. A Compressive Superresolution Display

    KAUST Repository

    Heide, Felix


    In this paper, we introduce a new compressive display architecture for superresolution image presentation that exploits co-design of the optical device configuration and compressive computation. Our display allows for superresolution, HDR, or glasses-free 3D presentation.

  1. Legibility Implications of Embellished Display Typefaces

    DEFF Research Database (Denmark)

    Beier, Sofie; Sand, Katrine; Starrfelt, Randi


    By subjecting participants to brief exposure of single letters in the peripheral visual field, we investigated 1) hemispheric differences in reading of embellished display typefaces, and 2) the legibility difference between different kinds of embellished display typefaces. The test typefaces are ...... affected by swashed features than by a reversed letter stroke, or by a drop shadow. When choosing between different styles of embellished display typefaces, it is therefore recommended to choose typefaces where the letter skeleton is not too complicated to decode....

  2. Legibility implictations of embellished display typefaces

    DEFF Research Database (Denmark)

    Beier, Sofie; Sand, Katrine; Starrfelt, Randi


    By subjecting participants to brief exposure of single letters in the peripheral visual field, we investigated 1) hemispheric differences in reading of embellished display typefaces, and 2) the legibility difference between different kinds of embellished display typefaces. The test typefaces...... affected by swashed features than by a reversed letter stroke, or by a drop shadow. When choosing between different styles of embellished display typefaces, it is therefore recommended to choose typefaces where the letter skeleton is not too complicated to decode....

  3. Displaying gray shades in liquid crystal displays

    Indian Academy of Sciences (India)

    These transistors act as a switch to charge and hold the desired voltage across a pixel. Passive matrix LCDs are easy to fabricate and cost less as compared to the active matrix LCDs. Current trend demands gray scale and colour capa- bilities even for the displays in mobile phones. Passive matrix LCDs will be preferred as.

  4. Scalable Resolution Display Walls

    KAUST Repository

    Leigh, Jason


    This article will describe the progress since 2000 on research and development in 2-D and 3-D scalable resolution display walls that are built from tiling individual lower resolution flat panel displays. The article will describe approaches and trends in display hardware construction, middleware architecture, and user-interaction design. The article will also highlight examples of use cases and the benefits the technology has brought to their respective disciplines. © 1963-2012 IEEE.

  5. OLED displays and lighting

    CERN Document Server

    Koden, Mitsuhiro


    Organic light-emitting diodes (OLEDs) have emerged as the leading technology for the new display and lighting market. OLEDs are solid-state devices composed of thin films of organic molecules that create light with the application of electricity. OLEDs can provide brighter, crisper displays on electronic devices and use less power than conventional light-emitting diodes (LEDs) or liquid crystal displays (LCDs) used today. This book covers both the fundamentals and practical applications of flat and flexible OLEDs.

  6. Displaying Data As Movies (United States)

    Moore, Judith G.


    NMSB Movie computer program displays large sets of data (more than million individual values). Presentation dynamic, rapidly displaying sequential image "frames" in main "movie" window. Any sequence of two-dimensional sets of data scaled between 0 and 255 (1-byte resolution) displayed as movie. Time- or slice-wise progression of data illustrated. Originally written to present data from three-dimensional ultrasonic scans of damaged aerospace composite materials, illustrates data acquired by thermal-analysis systems measuring rates of heating and cooling of various materials. Developed on Macintosh IIx computer with 8-bit color display adapter and 8 megabytes of memory using Symantec Corporation's Think C, version 4.0.

  7. JAVA Stereo Display Toolkit (United States)

    Edmonds, Karina


    This toolkit provides a common interface for displaying graphical user interface (GUI) components in stereo using either specialized stereo display hardware (e.g., liquid crystal shutter or polarized glasses) or anaglyph display (red/blue glasses) on standard workstation displays. An application using this toolkit will work without modification in either environment, allowing stereo software to reach a wider audience without sacrificing high-quality display on dedicated hardware. The toolkit is written in Java for use with the Swing GUI Toolkit and has cross-platform compatibility. It hooks into the graphics system, allowing any standard Swing component to be displayed in stereo. It uses the OpenGL graphics library to control the stereo hardware and to perform the rendering. It also supports anaglyph and special stereo hardware using the same API (application-program interface), and has the ability to simulate color stereo in anaglyph mode by combining the red band of the left image with the green/blue bands of the right image. This is a low-level toolkit that accomplishes simply the display of components (including the JadeDisplay image display component). It does not include higher-level functions such as disparity adjustment, 3D cursor, or overlays all of which can be built using this toolkit.

  8. Methodologies for the evaluation of CRT displays

    Energy Technology Data Exchange (ETDEWEB)

    Blackman, H.S.


    This paper presents the results of a series of experiments that have been conducted by the Human Factors Research Branch for the purpose of developing objective methods that will be used to evaluate the effectiveness of cathode ray tube (CRT) generated displays in improving reactor operator performance. The results of this work can provide a basis for the United States Nuclear Regulatory Commission (USNRC) to objectively evaluate specific licensee-developed display designs. The following methods have been developed: (1) Psychophysics - short exposure of static display types were presented to subjects who were tasked to report status of a given parameter; (2) Multidimensional Rating Scale - paper and pencil instrument employed by subjects to rate the features of a display type across a variety of psychological dimensions; (3) Checklist Evaluation - a paper and pencil instrument employed by subjects to assess particular display types according to a set of human engineering criteria; (4) Noninteractive Evaluation - a formal experiment where the subjects were requested to identify dynamic simulated transients using various display types; and (5) Interactive Evaluation - similar to the noninteractive, but the subjects interacted with the simulator using a touch screen to mitigate transient events.

  9. Helmet-Mounted Displays (HMD) (United States)

    Federal Laboratory Consortium — The Helmet-Mounted Display labis responsible for monocular HMD day display evaluations; monocular HMD night vision performance processes; binocular HMD day display...

  10. Effective Monitor Display Design. (United States)

    Harrell, William


    Describes some of the factors that affect computer monitor display design and provides suggestions and insights into how screen displays can be designed more effectively. Topics include color, font choices, organizational structure of text, space outline, and general principles. (Author/LRW)

  11. Jet printing flexible displays


    Street, R. A.; Wong, W S; Ready, S. E.; Chabinyc, M.L; Arias, A.C.; Limb, S.; Salleo, A; Lujan, R.


    Jet printing is an interesting patterning technique for electronic devices because it requires no physical mask, has digital control of ejection, and provides good layer-to-layer registration. It also has the potential to reduce display manufacturing costs and enable roll-to-roll processing. The technique is illustrated with examples of prototype printed displays using amorphous silicon and polymer semiconductors.

  12. Standardizing visual display quality

    NARCIS (Netherlands)

    Besuijen, J.; Spenkelink, G.P.J.


    The current ISO 9241–3 standard for visual display quality and the proposed user performance tests are reviewed. The standard is found to be more engineering than ergonomic and problems with system configuration, software applications, display settings, user behaviour, wear and physical environment

  13. Visual merchandising window display

    Directory of Open Access Journals (Sweden)

    Opris (Cas. Stanila M.


    Full Text Available Window display plays a major part in the selling strategies; it does not only include the simple display of goods, nowadays it is a form of art, also having the purpose of sustaining the brand image. This article wants to reveal the tools that are essential in creating a fabulous window display. Being a window designer is not an easy job, you have to always think ahead trends, to have a sense of colour, to know how to use light to attract customers in the store after only one glance at the window. The big store window displays are theatre scenes: with expensive backgrounds, special effects and high fashion mannequins. The final role of the displays is to convince customers to enter the store and trigger the purchasing act which is the final goal of the retail activity.

  14. Factors affecting dwell times on digital displaying (United States)

    Williams, A. J.; Harris, R. L., Sr.


    A series of exploratory tests were conducted to investigate the effects of advanced display formats and display media on pilot scanning behavior using Langley's oculometer, a desktop flight simulator, a conventional electro-mechanical meter, and various digital displays. The primary task was for the test subject to maintain level flight, on a specific course heading, during moderate turbulence. A secondary task of manually controlling the readout of a display was used to examine the effects of the display format on a subject's scan behavior. Secondary task scan parameters that were evaluated were average dwell time, dwell time histograms, and number of dwells per meter change. The round dial meter demonstrated shorter dwell times and fewer dwells per meter change than the digital displays. The following factors affected digital display scanning behavior: (1) the number of digits; (2) the update rate of the digits; (3) the display media; and (4) the character font. The size of the digits used in these tests (0.28 to 0.50 inches) did not affect scan behavior measures.

  15. Microlaser-based displays (United States)

    Bergstedt, Robert; Fink, Charles G.; Flint, Graham W.; Hargis, David E.; Peppler, Philipp W.


    Laser Power Corporation has developed a new type of projection display, based upon microlaser technology and a novel scan architecture, which provides the foundation for bright, extremely high resolution images. A review of projection technologies is presented along with the limitations of each and the difficulties they experience in trying to generate high resolution imagery. The design of the microlaser based projector is discussed along with the advantage of this technology. High power red, green, and blue microlasers have been designed and developed specifically for use in projection displays. These sources, in combination with high resolution, high contrast modulator, produce a 24 bit color gamut, capable of supporting the full range of real world colors. The new scan architecture, which reduces the modulation rate and scan speeds required, is described. This scan architecture, along with the inherent brightness of the laser provides the fundamentals necessary to produce a 5120 by 4096 resolution display. The brightness and color uniformity of the display is excellent, allowing for tiling of the displays with far fewer artifacts than those in a traditionally tiled display. Applications for the display include simulators, command and control centers, and electronic cinema.

  16. Color Display Design Guide (United States)


    and G. M. Corso , "Color flcsearch for Visuz’l Displays, Technical Report No. ONH-CR2l3-102-3, July 1975, 108 pp. 45 1 Results of two code comparison...respective- ly. Since the display elements constitute routine or non-priority informatica , all display information would be coded green if the three-color...1963, with Amendment 1, 30 September 1971. U.S. Government Printing Office: Washington, DC. 27. Christ, R.E. and G.M. Corso . "Color Research for Visual

  17. Small - Display Cartography

    DEFF Research Database (Denmark)

    Nissen, Flemming; Hvas, Anders; Münster-Swendsen, Jørgen

    This report comprises the work carried out in the work-package of small display cartography. The work-package has aimed at creating a general framework for the small-display cartography. A solid framework facilitates an increased use of spatial data in mobile devices - thus enabling, together...... Service Communication and finally, Part IV: Concluding remarks and topics for further research on small-display cartography. Part II includes a separate Appendix D consisting of a cartographic design specification. Part III includes a separate Appendix C consisting of a schema specification, a separate...

  18. Efeitos da redução de peso superior a 5% nos perfis hemodinâmico, metabólico e neuroendócrino de obesos grau I Effects of greater-than-5% weight reduction on hemodynamic, metabolic and neuroendocrine profiles of grade I obese subjects

    Directory of Open Access Journals (Sweden)

    Kelly Biancardini Gomes Barbato


    Full Text Available OBJETIVO: Avaliar os efeitos da redução de peso superior a 5% nos perfis hemodinâmico, metabólico e neuroendócrino de obesos grau I. MÉTODOS: Estudo observacional com 47 obesos grau I, média de idade de 33 anos, submetidos a orientação mensal quanto a dieta, exercício físico e comportamento alimentar, durante quatro meses. A pressão arterial, pelo método auscultatório, e a freqüência cardíaca, pelo método palpatório, foram avaliadas mensalmente, enquanto as seguintes variáveis (e respectivos métodos foram medidas no início e final do estudo: colesterol total, triglicerídeos, HDL-colesterol (enzimático, LDL-colesterol (fórmula de Friedwald, glicemia (enzimático hexoquinase, leptina, adiponectina, renina, aldosterona, insulina (radioimunoensaio e índice de resistência à insulina (HOMA. RESULTADOS: Observamos, após ajuste para outras variáveis, reduções significativas de 6 mmHg na pressão arterial diastólica, 7 pg/ml na renina, 13 mg/dl no colesterol total e 12 mg/dl no LDL-colesterol, no grupo com redução de peso superior a 5%. Notamos, também nesse grupo, tendência ao aumento de maior magnitude da adiponectina ao final do estudo, bem como diminuição três vezes maior dos níveis de glicemia, insulina e HOMA, e seis vezes maior da leptina. CONCLUSÃO: Medidas não-farmacológicas capazes de promover redução de peso superior a 5% produzem efeitos hemodinâmicos, metabólicos e neuroendócrinos que melhoram o risco cardiovascular de obesos.OBJECTIVE: To evaluate the effects of a greater-than-5% weight reduction in hemodynamic, metabolic, and neuroendocrine profiles of grade I obese subjects. METHODS: Observational study with 47 grade I obese subjects, with mean age of 33 years who received monthly orientation regarding diet, physical exercises, and eating behavior for four months. Blood pressure using the auscultatory method and pulse rate were assessed monthly, whereas the following variables (and

  19. Map display design (United States)

    Aretz, Anthony J.


    This paper presents a cognitive model of a pilot's navigation task and describes an experiment comparing a visual momentum map display to the traditional track-up and north-up approaches. The data show the advantage to a track-up map is its congruence with the ego-centered forward view; however, the development of survey knowledge is hindered by the inconsistency of the rotating display. The stable alignment of a north-up map aids the acquisition of survey knowledge, but there is a cost associated with the mental rotation of the display to a track-up alignment for ego-centered tasks. The results also show that visual momentum can be used to reduce the mental rotation costs of a north-up display.

  20. Compressive light field displays. (United States)

    Wetzstein, Gordon; Lanman, Douglas; Hirsch, Matthew; Heidrich, Wolfgang; Raskar, Ramesh


    Light fields are the multiview extension of stereo image pairs: a collection of images showing a 3D scene from slightly different perspectives. Depicting high-resolution light fields usually requires an excessively large display bandwidth; compressive light field displays are enabled by the codesign of optical elements and computational-processing algorithms. Rather than pursuing a direct "optical" solution (for example, adding one more pixel to support the emission of one additional light ray), compressive displays aim to create flexible optical systems that can synthesize a compressed target light field. In effect, each pixel emits a superposition of light rays. Through compression and tailored optical designs, fewer display pixels are necessary to emit a given light field than a direct optical solution would require.

  1. Flexible displays, rigid designs?

    DEFF Research Database (Denmark)

    Hornbæk, Kasper


    Rapid technological progress has enabled a wide range of flexible displays for computing devices, but the user experience--which we're only beginning to understand--will be the key driver for successful designs....

  2. ENERGY STAR Certified Displays (United States)

    U.S. Environmental Protection Agency — Certified models meet all ENERGY STAR requirements as listed in the Version 7.0 ENERGY STAR Program Requirements for Displays that are effective as of July 1, 2016....

  3. Advanced aerosense display interfaces (United States)

    Hopper, Darrel G.; Meyer, Frederick M.


    High-resolution display technologies are being developed to meet the ever-increasing demand for realistic detail. The requirement for evermore visual information exceeds the capacity of fielded aerospace display interfaces. In this paper we begin an exploration of display interfaces and evolving aerospace requirements. Current and evolving standards for avionics, commercial, and flat panel displays are summarized and compared to near term goals for military and aerospace applications. Aerospace and military applications prior to 2005 up to UXGA and digital HDTV resolution can be met by using commercial interface standard developments. Advanced aerospace requirements require yet higher resolutions (2560 X 2048 color pixels, 5120 X 4096 color pixels at 85 Hz, etc.) and necessitate the initiation of discussion herein of an 'ultra digital interface standard (UDIS)' which includes 'smart interface' features such as large memory and blazingly fast resizing microcomputer. Interface capacity, IT, increased about 105 from 1973 to 1998; 102 more is needed for UDIS.

  4. Liquid Crystal Airborne Display (United States)


    with the drive capability of the present state-of-the- art microm.ziiaturized integi ated circuits. The impact of microminiaturizing the drive circuits...7 Advantages /Disadvantages of Prior Art .........- 8 Performance of the Liquid Crystal Matrix Display . . .. 8 Liquid Crystal...Holographic HUD Light Source ...................... .... 99 Design of a Special Purpose Mercury Art - Plo.?hcr La np . 104 V LARGE SCALE INTEGRATION FOR DISPLAY

  5. Military display performance parameters (United States)

    Desjardins, Daniel D.; Meyer, Frederick


    The military display market is analyzed in terms of four of its segments: avionics, vetronics, dismounted soldier, and command and control. Requirements are summarized for a number of technology-driving parameters, to include luminance, night vision imaging system compatibility, gray levels, resolution, dimming range, viewing angle, video capability, altitude, temperature, shock and vibration, etc., for direct-view and virtual-view displays in cockpits and crew stations. Technical specifications are discussed for selected programs.

  6. ORFeome Phage Display. (United States)

    Zantow, Jonas; Moreira, Gustavo Marçal Schmidt Garcia; Dübel, Stefan; Hust, Michael


    ORFeome phage display allows the efficient functional screening of entire proteomes or even metaproteomes to identify immunogenic proteins. For this purpose, randomly fragmented, whole genomes or metagenomes are cloned into a phage-display vector allowing positive selection for open reading frames (ORF) to improve the library quality. These libraries display all possible proteins encoded by a pathogen or a microbiome on the phage surface. Consequently, immunogenic proteins can be selected from these libraries using disease-related immunoglobulins from patient serum. ORFeome phage display in particular allows the identification of immunogenic proteins that are only expressed in the host-pathogen interaction but not in cultivation, as well as the detection of very low expressed and very small immunogens and immunogenic proteins of non-cultivable organisms. The identified immunogenic proteins are potential biomarkers for the development of diagnostic assays or vaccines. These articles will give an introduction to ORFeome phage-display technology and give detailed protocols to identify immunogenic proteins by phage display.

  7. Information rich display design

    Energy Technology Data Exchange (ETDEWEB)

    Welch, Robin; Braseth, Alf Ove; Veland, Oeystein


    This paper presents the concept Information Rich Displays. The purpose of Information Rich Displays (IRDs) is to condensate prevailing information in process displays in such a way that each display format (picture) contains more relevant information for the user. Compared to traditional process control displays, this new concept allows the operator to attain key information at a glance and at the same time allows for improved monitoring of larger portions of the process. This again allows for reduced navigation between both process and trend displays and ease the cognitive demand on the operator. This concept has been created while working on designing display prototypes for the offshore petroleum production facilities of tomorrow. Offshore installations basically consist of wells, separation trains (where oil, gas and water are separated from each other), an oil tax measurement system (where oil quality is measured and the pressure increased to allow for export), gas compression (compression of gas for export) and utility systems (water treatment, chemical systems etc.). This means that an offshore control room operator has to deal with a complex process that comprises several functionally different systems. The need for a new approach to offshore display format design is in particular based on shortcomings in today's designs related to the keyhole effect, where the display format only reveals a fraction of the whole process. Furthermore, the upcoming introduction of larger off- and on-shore operation centres will increase the size and complexity of the operators' work domain. In the light of the increased demands on the operator, the proposed IRDs aim to counter the negative effects this may have on the workload. In this work we have attempted to classify the wide range of different roles an operator can have in different situations. The information content and amount being presented to the operator in a display should be viewed in context of the roles

  8. Dynamic plasmonic colour display (United States)

    Duan, Xiaoyang; Kamin, Simon; Liu, Na


    Plasmonic colour printing based on engineered metasurfaces has revolutionized colour display science due to its unprecedented subwavelength resolution and high-density optical data storage. However, advanced plasmonic displays with novel functionalities including dynamic multicolour printing, animations, and highly secure encryption have remained in their infancy. Here we demonstrate a dynamic plasmonic colour display technique that enables all the aforementioned functionalities using catalytic magnesium metasurfaces. Controlled hydrogenation and dehydrogenation of the constituent magnesium nanoparticles, which serve as dynamic pixels, allow for plasmonic colour printing, tuning, erasing and restoration of colour. Different dynamic pixels feature distinct colour transformation kinetics, enabling plasmonic animations. Through smart material processing, information encoded on selected pixels, which are indiscernible to both optical and scanning electron microscopies, can only be read out using hydrogen as a decoding key, suggesting a new generation of information encryption and anti-counterfeiting applications. PMID:28232722

  9. Airplane-Acceleration Display For Low-Gravity Research (United States)

    Millis, Marc G.


    Bar-graph display facilitates precise control of trajectories. Overall display system includes accelerometer block, power-supply-and-interface box, thrust-axis display, and pitch-and-lateral-axes display. Accelerometer block includes three servoaccelerometers orthogonally mounted on adjustable triaxial base allowing fine alignment of accelerometers with respect to airplane. Accelerometer block and power-supply-and-interface box located near center of gravity of airplane in lugguage area. LED bar-graph displays take up less panel space and easier to align with axes represented. No moving parts and not subject to parallax. With help of display, pilot adheres to predetermined fraction of g, with minimal lateral acceleration.

  10. Diagnosis of fault location using polygon displays. (United States)

    Greaney, J; MacRae, A N


    When polygon displays are used to represent multiple sources of information, sometimes they can be processed in parallel so that the significant information can be taken in 'at a glance'. Previous studies found that reaction times (RTs) remained constant as the number of vertices was increased (Greaney and MacRae 1993). However, these studies did not call for the explicit identification of critical vertices and used polygons that were relatively regular. The present study required abnormal vertices to be identified, and it was found that RTs increased as a function of the total number of vertices. In addition, RTs were longer when the variability of the displayed information was greater, that is, when the polygon was more irregular. It was concluded that the polygon display may have more potential as a global warning indicator than as a means of displaying individual parameter values, which must be assessed separately.

  11. Bus transport in Greater Manchester

    DEFF Research Database (Denmark)

    Sørensen, Claus Hedegaard; Gudmundsson, Henrik

    is that ‘organisation matters’ and that the reforms may have changed significantly the institutional conditions for the implementation of sustainable transport policies and easures. We have focused the research on public transport in larger cities and how their organisation has changed due to the reforms. At the NECTAR......, and will be elaborated by the time of the NECTAR workshop in May: • Deregulation and privatisation have not changed negative trends in modal split in Greater Manchester, but likely made it worse at least compared to London. • Deregulation and privatisation have worsened conditions for a greening of the bus fleets...

  12. Interpersonal interaction and cardiovascular response in type A subjects and coronary patients. (United States)

    Dembroski, T M; MacDougall, J M; Lushene, R


    The present study tested the hypothesis that Type A subjects respond with greater cardiovascular response than Type B subjects during the structured interview used to assess the Type A pattern. Coronary patients (n = 31) and patient controls (n = 33) were subjected to the interview and a history quiz while ECG and blood pressure were monitored. As predicted, Type A relative to Type B subjects evidenced significantly greater increases in both systolic and diastolic blood pressure, which were sustained over the course of the entire 12-15 minute interview. Type A subjects compared with B's also showed significantly greater blood pressure elevations during the quiz. Coronary patients displayed significantly greater Type A attributes than control subjects and tended to show greater blood pressure elevations than controls during the interview. In addition, the quiz induced significant elevations in the blood pressure of coronary patients, but not patient controls, over that displayed during the interview, despite the presence of beta-adrenergic blocking medication. Implications of the findings for coronary-prone behavior and coronary heart disease are discussed.

  13. Refreshing Refreshable Braille Displays. (United States)

    Russomanno, Alexander; O'Modhrain, Sile; Gillespie, R Brent; Rodger, Matthew W M


    The increased access to books afforded to blind people via e-publishing has given them long-sought independence for both recreational and educational reading. In most cases, blind readers access materials using speech output. For some content such as highly technical texts, music, and graphics, speech is not an appropriate access modality as it does not promote deep understanding. Therefore blind braille readers often prefer electronic braille displays. But, these are prohibitively expensive. The search is on, therefore, for a low-cost refreshable display that would go beyond current technologies and deliver graphical content as well as text. And many solutions have been proposed, some of which reduce costs by restricting the number of characters that can be displayed, even down to a single braille cell. In this paper, we demonstrate that restricting tactile cues during braille reading leads to poorer performance in a letter recognition task. In particular, we show that lack of sliding contact between the fingertip and the braille reading surface results in more errors and that the number of errors increases as a function of presentation speed. These findings suggest that single cell displays which do not incorporate sliding contact are likely to be less effective for braille reading.

  14. Display interface concepts for automated fault diagnosis (United States)

    Palmer, Michael T.


    An effort which investigated concepts for displaying dynamic system status and fault history (propagation) information to the flight crew is described. This investigation was performed by developing several candidate display formats and then conducting comprehension tests to determine those characteristics that made one format preferable to another for presenting this type of information. Twelve subjects participated. Flash tests, or limited time exposure tests, were used to determine the subjects' comprehension of the information presented in the display formats. It was concluded from the results of the comprehension tests that pictographs were more comprehensible than both block diagrams and text for presenting dynamic system status and fault history information, and that pictographs were preferred over both block diagrams and text. It was also concluded that the addition of this type of information in the cockpit would help the crew remain aware of the status of their aircraft.

  15. Effects Of Frame Rates In Video Displays (United States)

    Kellogg, Gary V.; Wagner, Charles A.


    Report describes experiment on subjective effects of rates at which display on cathode-ray tube in flight simulator updated and refreshed. Conducted to learn more about jumping, blurring, flickering, and multiple lines that observer perceives when line moves at high speed across screen of a calligraphic CRT.

  16. Refrigerated display cabinets; Butikskyla

    Energy Technology Data Exchange (ETDEWEB)

    Fahlen, Per


    This report summarizes experience from SP research and assignments regarding refrigerated transport and storage of food, mainly in the retail sector. It presents the fundamentals of heat and mass transfer in display cabinets with special focus on indirect systems and secondary refrigerants. Moreover, the report includes a brief account of basic food hygiene and the related regulations. The material has been compiled for educational purposes in the Masters program at Chalmers Technical University.

  17. Tactical Video Display. (United States)


    designed to extend the state-of-the-art in the area of thin film electroluminescent display systems. The program entails two major areas of efforts...the inclusion of the residual gases in thin film is very likely and dependent upon the concentrations of the gases and the reactive nature of the...reproducible films . Some exploratory work was also performed on the feasitility of applying a ZnTe /Te system black layer with TFEL structure. Pre

  18. Attention-Seeking Displays.

    Directory of Open Access Journals (Sweden)

    Szabolcs Számadó

    Full Text Available Animal communication abounds with extravagant displays. These signals are usually interpreted as costly signals of quality. However, there is another important function for these signals: to call the attention of the receiver to the signaller. While there is abundant empirical evidence to show the importance of this stage, it is not yet incorporated into standard signalling theory. Here I investigate a general model of signalling - based on a basic action-response game - that incorporates this searching stage. I show that giving attention-seeking displays and searching for them can be an ESS. This is a very general result and holds regardless whether only the high quality signallers or both high and low types give them. These signals need not be costly at the equilibrium and they need not be honest signals of any quality, as their function is not to signal quality but simply to call the attention of the potential receivers. These kind of displays are probably more common than their current weight in the literature would suggest.

  19. Stage Cylindrical Immersive Display (United States)

    Abramyan, Lucy; Norris, Jeffrey S.; Powell, Mark W.; Mittman, David S.; Shams, Khawaja S.


    Panoramic images with a wide field of view intend to provide a better understanding of an environment by placing objects of the environment on one seamless image. However, understanding the sizes and relative positions of the objects in a panorama is not intuitive and prone to errors because the field of view is unnatural to human perception. Scientists are often faced with the difficult task of interpreting the sizes and relative positions of objects in an environment when viewing an image of the environment on computer monitors or prints. A panorama can display an object that appears to be to the right of the viewer when it is, in fact, behind the viewer. This misinterpretation can be very costly, especially when the environment is remote and/or only accessible by unmanned vehicles. A 270 cylindrical display has been developed that surrounds the viewer with carefully calibrated panoramic imagery that correctly engages their natural kinesthetic senses and provides a more accurate awareness of the environment. The cylindrical immersive display offers a more natural window to the environment than a standard cubic CAVE (Cave Automatic Virtual Environment), and the geometry allows multiple collocated users to simultaneously view data and share important decision-making tasks. A CAVE is an immersive virtual reality environment that allows one or more users to absorb themselves in a virtual environment. A common CAVE setup is a room-sized cube where the cube sides act as projection planes. By nature, all cubic CAVEs face a problem with edge matching at edges and corners of the display. Modern immersive displays have found ways to minimize seams by creating very tight edges, and rely on the user to ignore the seam. One significant deficiency of flat-walled CAVEs is that the sense of orientation and perspective within the scene is broken across adjacent walls. On any single wall, parallel lines properly converge at their vanishing point as they should, and the sense of

  20. HDTV and large-screen display (United States)

    Mitsuhashi, Tetsuo


    HDTV (known as Hi-Vision in Japan), with its ability to provide through high- definition pictures on a large screen display advanced psychological effects such as sensations of reality and a visual impact unobtainable in conventional television, is the television system of the next generation. In Japan, daily one-hour experimental broadcasting was initiated in June 1989 using the BS-2 broadcast satellite, and regular service is scheduled to begin via the BS-3 satellite to be launched in 1990. To this end, a home-use receiver using VLSIs has already been developed. Moreover, HDTV is currently being applied in such diverse areas as film production, printing and publishing, medicine, and art museums. The HDTV system handles approximately five times the information of conventional television. As a result, a large screen display capable of maintaining stable resolution greater than twice that of conventional displays is essential to the full realization of HDTV's vast potential. This paper will first discuss HDTV's basic parameters, concentrating on the psychovisual effects, and explain some preferable display characteristics from this psychovisual point of view. It will then discuss the technical problems in developing such a display, and final ly describe the current state of HDTV display development.

  1. Handbook of Visual Display Technology

    CERN Document Server

    Cranton, Wayne; Fihn, Mark


    The Handbook of Visual Display Technology is a unique work offering a comprehensive description of the science, technology, economic and human interface factors associated with the displays industry. An invaluable compilation of information, the Handbook will serve as a single reference source with expert contributions from over 150 international display professionals and academic researchers. All classes of display device are covered including LCDs, reflective displays, flexible solutions and emissive devices such as OLEDs and plasma displays, with discussion of established principles, emergent technologies, and particular areas of application. The wide-ranging content also encompasses the fundamental science of light and vision, image manipulation, core materials and processing techniques, display driving and metrology.

  2. Biomedical sensing and display concept improves brain wave monitoring (United States)

    Trent, R. L.


    Concept for increasing effectiveness of biomedical sensing and display promises greater monitoring capability while lessening high skill requirements in operating personnel. New concept overcomes deficiencies of current system by employing increased number of probes and microelectronic preamplifiers.

  3. Alphanumeric and graphic displays for dynamic process monitoring and control. (United States)

    Coury, Bruce G; Pietras, Christine M


    The use of high resolution graphic display technology provides the control system designer with numerous options for displaying process plant information. This research evaluated the effectiveness of alphanumeric and graphic display formats for presenting system information in a dynamic process plant environment Thirty subjects, divided equally into three groups, were tested on three separate display formats: graphical, digital and multiple representations. The operators' task was to optimize the performance of a simulated fluid processing plant and to detect system failures. Results showed that the multiple display resulted in the best optimization performance and minimized the time required to detect failures. In general, the graphic display produced the worst performance with the digital display exhibiting intermediate results. The decision strategies used by the operators were found to have the greatest impact on performance. The results are discussed in terms of the merits of different display formats for representing system information in a manner appropriate to the operator's task.

  4. Image Descriptors for Displays (United States)


    the entire display could be changed as often as every 1/60 s (TV field rate). Scan interlace was not used on the monitor. The 1/60-s resolution of...of photons arriving at the retina. These contributions can be separated by examining the experimental mT(v) as a function of luminance. From... photon shot noise, was found to be negligible for luminance .al.•- above 4 iabout 10 mL. Thus, the function A(v) represents the m4(v) employed in the

  5. SES cupola interactive display design environment (United States)

    Vu, Bang Q.; Kirkhoff, Kevin R.


    The Systems Engineering Simulator, located at the Lyndon B. Johnson Space Center in Houston, Texas, is tasked with providing a real-time simulator for developing displays and controls targeted for the Space Station Freedom. These displays and controls will exist inside an enclosed workstation located on the space station. The simulation is currently providing the engineering analysis environment for NASA and contractor personnel to design, prototype, and test alternatives for graphical presentation of data to an astronaut while he performs specified tasks. A highly desirable aspect of this environment is to have the capability to rapidly develop and bring on-line a number of different displays for use in determining the best utilization of graphics techniques in achieving maximum efficiency of the test subject fulfilling his task. The Systems Engineering Simulator now has available a tool which assists in the rapid development of displays for these graphic workstations. The Display Builder was developed in-house to provide an environment which allows easy construction and modification of displays within minutes of receiving requirements for specific tests.

  6. Painting Reproductions on Display

    Directory of Open Access Journals (Sweden)

    Joanna Iranowska


    Full Text Available Paintings in museums might occasionally be replaced by a photoprint mimicking the original. This article is an investigation of what constitutes a good reproduction of an artwork (oil painting that is meant to be displayed. The article discusses what the usefulness of reproductions depends on, applying the Valuation Studies approach, which means the primary concern is with the practice of valuing itself. In other words, the study focuses on how museum experts evaluate reproduc-tions of oil paintings. The article analyses three cases of displaying digitally prin-ted copies of Edvard Munch's oil paintings between 2013 and 2015 in the Munch Museum and in the National Gallery in Oslo. The study is based on a series of semi-structured interviews with the experts, working at and for the museums, that were involved in producing and exhibiting of the photoprints: curators, con-servators, museum educators, and external manufacturers. The interviews were grouped into five clusters, which I have chosen to call registers of valuing following Frank Heuts and Annemarie Mol (2013. The described valuation practices have to do with delivering experiences to the public, obtaining mimetic resemblance, solving ethical aspects, exhibitions' budget, and last but not least, with the time perspective.

  7. Digital Display Integration Project Project Online 2.0

    CERN Document Server

    Bardsley, J N


    The electronic display industry is changing in three important ways. First, the dominance of the cathode ray tube (CRT) is being challenged by the development of flat panel displays (FPDs). This will lead to the availability of displays of higher performance, albeit at greater cost. Secondly, the analog interfaces between displays that show data and the computers that generate the data are being replaced by digital connections. Finally, a high-resolution display is becoming the most expensive component in computer system for homes and small offices. It is therefore desirable that the useful lifetime of the display extend over several years and that the electronics allows the display to be used with many different image sources. Hopefully, the necessity of having three or four large CRTs in one office to accommodate different computer operating systems or communication protocols will soon disappear. Instead, we hope to see a set of flat panels that can be switched to show several independent images from multip...

  8. Determining minimal display element requirements for surface map displays (United States)


    There is a great deal of interest in developing electronic surface map displays to enhance safety and reduce incidents and incursions on or near the airport surface. There is a lack of research, however, detailing the minimal display elements require...

  9. Greater body mass index is related to greater self-identified cold tolerance and greater insensible body mass loss. (United States)

    Jung, Dahee; Kim, Dami; Park, Joonhee; Lee, Joo Young


    Insensible body mass loss (IBL) from the human body continuously occurs, which is an important component in body heat exchange. The purpose of this study was to examine the relevance of IBL to anthropometric characteristics and self-identified thermal tolerance. A total of 289 healthy young Korean males were chosen and sorted into the following three groups: heat tolerable only (HTO, N = 79), cold tolerable only (CTO, N = 104), neither heat nor cold tolerable (NHC, N = 106). They weighed before and after a 30-min rest under lightly clothed condition at an air temperature of 23 ± 1 °C with a relative humidity 55 ± 5 %RH. (1) The IBL of 289 males had a mean of 90 ± 75 g h(-1) (48 ± 40 g h(-1) m(-2)); (2) No significant difference in IBL among the three groups were found; (3) Significant differences in body weight and body mass index (BMI) among three groups were found (P body surface area (P = 0.059); (4) CTO was approximately 4.1 kg heavier in body weight (P body surface area. For healthy young males within normal anthropometric ranges in Korea, IBL was positively related to BMI, and individuals with greater BMI showed greater self-identified cold tolerance, but no direct relationship was found between IBL and self-identified cold tolerance. This suggests that body physique (e.g., BMI) could be an explanatory factor between insensible body heat loss and subjective cognition on cold tolerance.

  10. A Well Tempered Mammographic Display

    National Research Council Canada - National Science Library

    Kundel, Harold L


    This proposal addresses the development of a softcopy display for digital mammography that seeks to couple optimally the visual system to the displayed image without excessive human-machine interaction...

  11. Optimal delivery in display advertising


    Mostagir, Mohamed


    In display advertising, a publisher targets a specific audience by displaying ads on content web pages. Because the publisher has little control over the supply of display opportunities, the actual supply of ads that it can sell is stochastic. We consider the problem of optimal ad delivery, where an advertiser requests a certain number of impressions to be displayed by the publisher over a certain time horizon. Time is divided into periods, and in the beginning of each period the publisher ch...

  12. Patellar maltracking is prevalent among patellofemoral pain subjects with patella alta: an upright, weightbearing MRI study (United States)

    Pal, Saikat; Besier, Thor F.; Beaupre, Gary S.; Fredericson, Michael; Delp, Scott L.; Gold, Garry E.


    The purpose of this study is to determine if patellar maltracking is more prevalent among patellofemoral (PF) pain subjects with patella alta compared to subjects with normal patella height. We imaged 37 PF pain and 15 pain free subjects in an open-configuration magnetic resonance imaging scanner while they stood in a weightbearing posture. We measured patella height using the Caton-Deschamps, Blackburne-Peel, Insall-Salvati, Modified Insall-Salvati, and Patellotrochlear indices, and classified the subjects into patella alta and normal patella height groups. We measured patella tilt and bisect offset from oblique-axial plane images, and classified the subjects into maltracking and normal tracking groups. Patellar maltracking was more prevalent among PF pain subjects with patella alta compared to PF pain subjects with normal patella height (two-tailed Fisher’s exact test, p patella alta were maltrackers, whereas only 16% (4/25) of PF pain subjects with normal patella height were maltrackers. Patellofemoral pain subjects classified as maltrackers displayed a greater patella height compared to the pain free and PF pain subjects classified as normal trackers (two-tailed unpaired t-tests with Bonferroni correction, p patella alta compared to subjects with normal patella height; and 2) we show greater patella height in PF pain subjects compared to pain free subjects using four indices commonly used in clinics. PMID:23165335

  13. Stereo acuity and visual acuity in head-mounted displays

    NARCIS (Netherlands)

    Kooi, F.L.; Mosch, M.


    We have determined how the stereo acuity and visual acuity with Helmet Mounted Displays (HMD’s) depend on the HMD’s spatial resolution. We measured stereo acuity and visual acuity on 6 subjects for three types of HMD, with display resolutions ranging from 0.18 to 0.50 pixel/arcmin. The HMD’s provide

  14. LHCb Event display

    CERN Document Server

    Trisovic, Ana


    The LHCb Event Display was made for educational purposes at the European Organization for Nuclear Research, CERN in Geneva, Switzerland. The project was implemented as a stand-alone application using C++ and ROOT, a framework developed by CERN for data analysis. This paper outlines the development and architecture of the application in detail, as well as the motivation for the development and the goals of the exercise. The application focuses on the visualization of events recorded by the LHCb detector, where an event represents a set of charged particle tracks in one proton-proton collision. Every particle track is coloured by its type and can be selected to see its essential information such as mass and momentum. The application allows students to save this information and calculate the invariant mass for any pair of particles. Furthermore, the students can use additional calculating tools in the application and build up a histogram of these invariant masses. The goal for the students is to find a $D^0$ par...

  15. Colorimetry for CRT displays. (United States)

    Golz, Jürgen; MacLeod, Donald I A


    We analyze the sources of error in specifying color in CRT displays. These include errors inherent in the use of the color matching functions of the CIE 1931 standard observer when only colorimetric, not radiometric, calibrations are available. We provide transformation coefficients that prove to correct the deficiencies of this observer very well. We consider four different candidate sets of cone sensitivities. Some of these differ substantially; variation among candidate cone sensitivities exceeds the variation among phosphors. Finally, the effects of the recognized forms of observer variation on the visual responses (cone excitations or cone contrasts) generated by CRT stimuli are investigated and quantitatively specified. Cone pigment polymorphism gives rise to variation of a few per cent in relative excitation by the different phosphors--a variation larger than the errors ensuing from the adoption of the CIE standard observer, though smaller than the differences between some candidate cone sensitivities. Macular pigmentation has a larger influence, affecting mainly responses to the blue phosphor. The estimated combined effect of all sources of observer variation is comparable in magnitude with the largest differences between competing cone sensitivity estimates but is not enough to disrupt very seriously the relation between the L and M cone weights and the isoluminance settings of individual observers. It is also comparable with typical instrumental colorimetric errors, but we discuss these only briefly.

  16. Military display market: update to fourth comprehensive edition (United States)

    Desjardins, Daniel D.; Byrd, James C.; Hopper, Darrel G.


    The military display market is analyzed in terms of all fully electronic and many electro-mechanical displays used on combat platforms across all DOD Services. The military market for displays is defined by parameters such as active area, bezel-to-bezel measurement and technology. Other characteristics such as luminance, contrast ratio, gray levels, resolution, viewing angle, color, video capability, and night vision imaging system compatibility are noted. This study takes into account all displays that are either installed or funded for installation. In some cases, planned displays are also included. Display sizes having aggregate defense applications of 5,000 units or greater and having DOD applications across 10 or more platform fleets, are tabulated. The issue of size commonality is addressed where distribution of active area across platform fleets, individually, in groups of two through nine, and ten or more, is illustrated. Military displays are also analyzed by technology, where total quantities of such displays are broken out into CRT, LCD, AMLCD, EM, LED, Incandescent, Plasma and TFEL percentages. Custom, versus rugged commercial, versus commercial off-the-shelf designs are contrasted. High and low information content designs are identified. Displays for several high-profile military programs are discussed, to include both technical specifications and program history. This defense-wide study, an up-date to our paper delivered April 2006, documents 642 weapons system platforms comprising 1,194,199 displays in 1,217 sizes, of which 1,197 are direct-view and 20 are virtual-view. Defense display sizes range from 0.082 in..2 to 10,625 in.2 in 18 technologies, mostly flat panel display (FPD) technologies based on thin-film transistor active matrix liquid crystal displays (TFT AM LCD), with cathode ray tube (CRT) second and dropping rapidly. This paper provides an overview of the DOD display market, allowing government, academia and industry highlights of

  17. Citizenship displayed by disabled people

    Directory of Open Access Journals (Sweden)

    Eliana Prado Carlino


    Full Text Available By investigating the processes by which successful teachers become activate citizens and by listening to the diversity and richness of their life and formation stories, this work became possible. Its aim is to display some of the utterances of two Down Syndrome individuals and their active-citizenship activities. Their stories were told in the reports of two teachers when describing their personal and professional history, and were considered to be an integral part of it. Thus, some of the utterances and perceptions with which these two individuals elaborate their references, their worldview and their active-citizenship activity are evidenced in this paper. This article is based on the language conceptions of Vygotsky and Bakhtin who defend the idea that the group and the social mentality are ingrain in the individual. Hence, the history of one person reveals that of many others, since there is a deep link between the individual and the social in the formation of a subjective worldview. As a result, it can be easily seen that the utterances expressed by the participants in this research cannot be considered strictly individual because enunciation is social in nature. Despite the fact that the utterances are those of individuals, they manifest a collective reality. This demonstrates the real advantages and possibilities that deficient people get from their participation and intervention in society.

  18. Expanding subjectivities

    DEFF Research Database (Denmark)

    Lundgaard Andersen, Linda; Soldz, Stephen


    A major theme in recent psychoanalytic thinking concerns the use of therapist subjectivity, especially “countertransference,” in understanding patients. This thinking converges with and expands developments in qualitative research regarding the use of researcher subjectivity as a tool to understa...

  19. Quantitative comparison of interaction with shutter glasses and autostereoscopic displays (United States)

    Alpaslan, Zahir Y.; Yeh, Shih-Ching; Rizzo, Albert A.; Sawchuk, Alexander A.


    In this paper we describe experimental measurements and comparison of human interaction with three different types of stereo computer displays. We compare traditional shutter glasses-based viewing with three-dimensional (3D) autostereoscopic viewing on displays such as the Sharp LL-151-3D display and StereoGraphics SG 202 display. The method of interaction is a sphere-shaped "cyberprop" containing an Ascension Flock-of-Birds tracker that allows a user to manipulate objects by imparting the motion of the sphere to the virtual object. The tracking data is processed with OpenGL to manipulate objects in virtual 3D space, from which we synthesize two or more images as seen by virtual cameras observing them. We concentrate on the quantitative measurement and analysis of human performance for interactive object selection and manipulation tasks using standardized and scalable configurations of 3D block objects. The experiments use a series of progressively more complex block configurations that are rendered in stereo on various 3D displays. In general, performing the tasks using shutter glasses required less time as compared to using the autostereoscopic displays. While both male and female subjects performed almost equally fast with shutter glasses, male subjects performed better with the LL-151-3D display, while female subjects performed better with the SG202 display. Interestingly, users generally had a slightly higher efficiency in completing a task set using the two autostereoscopic displays as compared to the shutter glasses, although the differences for all users among the displays was relatively small. There was a preference for shutter glasses compared to autostereoscopic displays in the ease of performing tasks, and glasses were slightly preferred for overall image quality and stereo image quality. However, there was little difference in display preference in physical comfort and overall preference. We present some possible explanations of these results and point

  20. Augmenting digital displays with computation (United States)

    Liu, Jing

    As we inevitably step deeper and deeper into a world connected via the Internet, more and more information will be exchanged digitally. Displays are the interface between digital information and each individual. Naturally, one fundamental goal of displays is to reproduce information as realistically as possible since humans still care a lot about what happens in the real world. Human eyes are the receiving end of such information exchange; therefore it is impossible to study displays without studying the human visual system. In fact, the design of displays is rather closely coupled with what human eyes are capable of perceiving. For example, we are less interested in building displays that emit light in the invisible spectrum. This dissertation explores how we can augment displays with computation, which takes both display hardware and the human visual system into consideration. Four novel projects on display technologies are included in this dissertation: First, we propose a software-based approach to driving multiview autostereoscopic displays. Our display algorithm can dynamically assign views to hardware display zones based on multiple observers' current head positions, substantially reducing crosstalk and stereo inversion. Second, we present a dense projector array that creates a seamless 3D viewing experience for multiple viewers. We smoothly interpolate the set of viewer heights and distances on a per-vertex basis across the arrays field of view, reducing image distortion, crosstalk, and artifacts from tracking errors. Third, we propose a method for high dynamic range display calibration that takes into account the variation of the chrominance error over luminance. We propose a data structure for enabling efficient representation and querying of the calibration function, which also allows user-guided balancing between memory consumption and the amount of computation. Fourth, we present user studies that demonstrate that the ˜ 60 Hz critical flicker fusion

  1. PACS displays: how to select the right display technology. (United States)

    Hirschorn, David S; Krupinski, Elizabeth A; Flynn, Michael J


    The medical imaging display is a precision instrument with many features not found in commercial-grade displays. The more one understands what these features are and their corresponding clinical value, the better one can make a purchase decision. None of these displays maintain themselves for 5 years or more without some degree of automatic or manual performance testing. Routine calibration conformance checks are beginning to be mandated by the departments of health of many states. Most manufacturers provide mechanisms to perform these checks and keep track of their results, some more easily than others. A consistent display brightness of about 400 cd/m(2) and close conformance to the DICOM curve are the key components of a successful check. Displays are typically characterized by the number of pixels they contain, usually 2, 3, or 5 megapixels, but this is the least useful determinant of image quality. What matters most is the size of the pixels and the size of the whole display, which should be selected on the basis of the typical viewing distance. The farther one's eyes are from the display, the larger the pixels and the overall display size can be while still feeding the eye as much information as it can see. Care should be taken to use the appropriate display in a given setting for the clinical purpose at hand. Copyright © 2014 American College of Radiology. Published by Elsevier Inc. All rights reserved.

  2. Prototyping user displays using CLIPS (United States)

    Kosta, Charles P.; Miller, Ross; Krolak, Patrick; Vesty, Matt


    CLIPS is being used as an integral module of a rapid prototyping system. The prototyping system consists of a display manager for object browsing, a graph program for displaying line and bar charts, and a communications server for routing messages between modules. A CLIPS simulation of a physical model provides dynamic control of the user's display. Currently, a project is well underway to prototype the Advanced Automation System (AAS) for the Federal Aviation Administration.

  3. Texture-based correspondence display (United States)

    Gerald-Yamasaki, Michael


    Texture-based correspondence display is a methodology to display corresponding data elements in visual representations of complex multidimensional, multivariate data. Texture is utilized as a persistent medium to contain a visual representation model and as a means to create multiple renditions of data where color is used to identify correspondence. Corresponding data elements are displayed over a variety of visual metaphors in a normal rendering process without adding extraneous linking metadata creation and maintenance. Texture-based correspondence display extends the effectiveness of visual representation for understanding data to the understanding and creation of visual representation models.

  4. Integrated micromachined scanning display systems (United States)

    Hagelin, Paul M.; Krishnamoorthy, Uma; Conant, Robert A.; Muller, Richard S.; Lau, Kam Y.; Solgaard, Olav


    We describe a raster-scanning display system comprised of two tilt-up micromachined polysilicon mirrors that rotate about orthogonal axes. We have demonstrated a resolution of 102 X 119 pixels. The optical efficiency of our two- mirror micro-optical raster-scanning system is comparable to that of micromachined display systems developed by Texas Instruments and Silicon Light Machines. Ease of integration with on-chip light sources and lenses has the potential to reduce packaging size, complexity and cost of the display system and makes it well suited for head-mounted display applications.

  5. Display Technology: An Annotated Bibliography. (United States)


    cockpit displays in future aircraft may be radically different from the present arrays of separate, single-purpose instruments. Many display ca - pabilities...Interna- tional Air Transport Association 15th Technical Conference, Lucerne , Switzer- land, April 1963. Engineering Paper No. 1583, Douglas Aircraft

  6. Cognitive Considerations in Display Design. (United States)

    Simcox, William

    This investigation of the encoding features of graphs begins with a description of a cognitive framework which allows designers to factor into the process of designing displays how people interpret the information found and what display properties are responsible for this interpretation. The framework also provides a performance measure for use in…

  7. Flexible Bistable Cholesteric Reflective Displays (United States)

    Yang, Deng-Ke


    Cholesteric liquid crystals (ChLCs) exhibit two stable states at zero field condition-the reflecting planar state and the nonreflecting focal conic state. ChLCs are an excellent candidate for inexpensive and rugged electronic books and papers. This paper will review the display cell structure,materials and drive schemes for flexible bistable cholesteric (Ch) reflective displays.

  8. Real Image Visual Display System (United States)


    Vol. 1457 Stereoscopic Displays and Applications 11, 274-282 (February 1991). 15. Lucente, Marc . "Optimization of Hologram Computaion for Real-Time," SPIE Vol. 1667 Practical Holography VI, 32-43 (February 1992). 16. Marraud, A. and M. Bonnet . "Restitution of Stereoscopic Picture by Means


    Energy Technology Data Exchange (ETDEWEB)



    This paper discussed the presentation of information in computer-based control rooms. Issues associated with the typical displays currently in use are discussed. It is concluded that these displays should be augmented with new displays designed to better meet the information needs of plant personnel and to minimize the need for interface management tasks (the activities personnel have to do to access and organize the information they need). Several approaches to information design are discussed, specifically addressing: (1) monitoring, detection, and situation assessment; (2) routine task performance; and (3) teamwork, crew coordination, collaborative work.

  10. Flat panel display - Impurity doping technology for flat panel displays

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Toshiharu [Advanced Technology Planning, Sumitomo Eaton Nova Corporation, SBS Tower 9F, 10-1, Yoga 4-chome, Setagaya-ku, 158-0097 Tokyo (Japan)]. E-mail:


    Features of the flat panel displays (FPDs) such as liquid crystal display (LCD) and organic light emitting diode (OLED) display, etc. using low temperature poly-Si (LTPS) thin film transistors (TFTs) are briefly reviewed comparing with other FPDs. The requirements for fabricating TFTs used for high performance FPDs and system on glass (SoG) are addressed. This paper focuses on the impurity doping technology, which is one of the key technologies together with crystallization by laser annealing, formation of high quality gate insulator and gate-insulator/poly-Si interface. The issues to be solved in impurity doping technology for state of the art and future TFTs are clarified.

  11. The effect of configural displays on pilot situation awareness in helmet-mounted displays (United States)

    Jenkins, Joseph Christopher

    The current research utilized configural displays within the domain of aviation to assess what design features of configural displays contribute to the formation of operator situation awareness (SA). Configural displays map system information relevant to operator goals onto geometric shapes called emergent features. An emergent feature is formed from the combination of individual line segments to produce a global feature more perceptually salient and recognized sooner than the individual parts themselves. Configural displays have been shown in previous research to provide better operator performance for integration tasks where multiple pieces of information must be considered at once, yet the design aspects of configural displays that impact the formation of operator SA have yet to be determined. The current research compared the design features of three aviation configural displays over four experiments to quantify what aspects of configural displays would impact operator SA. The research sought to determine whether the simple act of representing system information in configural displays using emergent features is sufficient for facilitating operator SA or do other design factors need to be considered? Operator SA was assessed using explicit and implicit measures of SA from operator task performance in addition to a subjective SA rating scale. The recognition of aircraft attitude (climb/dive flight angles) when briefly presented to pilots in Experiment 1 revealed significant performance differences for the Arc Segment Attitude Reference (ASAR) configural display which mapped aircraft attitude information onto a circular shape versus the traditional aircraft head-up display (HUD) ladder found in the Joint Strike Fighter (JSF) HUD and Dual-Articulated (DA) HUD. The current research in Experiment 1 provides evidence that configural displays such as the ASAR that utilize emergent features well mapped to fully relate the information needed for a task will facilitate

  12. Advanced methods for displays and remote control of robots. (United States)

    Eliav, Ami; Lavie, Talia; Parmet, Yisrael; Stern, Helman; Edan, Yael


    An in-depth evaluation of the usability and situation awareness performance of different displays and destination controls of robots are presented. In two experiments we evaluate the way information is presented to the operator and assess different means for controlling the robot. Our study compares three types of displays: a "blocks" display, a HUD (head-up display), and a radar display, and two types of controls: touch screen and hand gestures. The HUD demonstrated better performance when compared to the blocks display and was perceived to have greater usability compared to the radar display. The HUD was also found to be more useful when the operation of the robot was more difficult, i.e., when using the hand-gesture method. The experiments also pointed to the importance of using a wide viewing angle to minimize distortion and for easier coping with the difficulties of locating objects in the field of view margins. The touch screen was found to be superior in terms of both objective performance and its perceived usability. No differences were found between the displays and the controllers in terms of situation awareness. This research sheds light on the preferred display type and controlling method for operating robots from a distance, making it easier to cope with the challenges of operating such systems. Copyright © 2011 Elsevier Ltd and The Ergonomics Society. All rights reserved.


    Indian Academy of Sciences (India)

    Subject Index. Variation of surface electric field during geomagnetic disturbed period at Maitri, Antarctica. 1721. Geomorphology. A simple depression-filling method for raster and irregular elevation datasets. 1653. Decision Support System integrated with Geographic. Information System to target restoration actions in water-.

  14. Tone compatibility between HDR displays (United States)

    Bist, Cambodge; Cozot, Rémi; Madec, Gérard; Ducloux, Xavier


    High Dynamic Range (HDR) is the latest trend in television technology and we expect an in ux of HDR capable consumer TVs in the market. Initial HDR consumer displays will operate on a peak brightness of about 500-1000 nits while in the coming years display peak brightness is expected to go beyond 1000 nits. However, professionally graded HDR content can range from 1000 to 4000 nits. As with Standard Dynamic Range (SDR) content, we can expect HDR content to be available in variety of lighting styles such as low key, medium key and high key video. This raises concerns over tone-compatibility between HDR displays especially when adapting to various lighting styles. It is expected that dynamic range adaptation between HDR displays uses similar techniques as found with tone mapping and tone expansion operators. In this paper, we survey simple tone mapping methods of 4000 nits color-graded HDR content for 1000 nits HDR displays. We also investigate tone expansion strategies when HDR content graded in 1000 nits is displayed on 4000 nits HDR monitors. We conclude that the best tone reproduction technique between HDR displays strongly depends on the lighting style of the content.

  15. Texture-Based Correspondence Display (United States)

    Gerald-Yamasaki, Michael


    Texture-based correspondence display is a methodology to display corresponding data elements in visual representations of complex multidimensional, multivariate data. Texture is utilized as a persistent medium to contain a visual representation model and as a means to create multiple renditions of data where color is used to identify correspondence. Corresponding data elements are displayed over a variety of visual metaphors in a normal rendering process without adding extraneous linking metadata creation and maintenance. The effectiveness of visual representation for understanding data is extended to the expression of the visual representation model in texture.

  16. Circular displays: control/display arrangements and stereotype strength with eight different display locations. (United States)

    Chan, Alan H S; Hoffmann, Errol R


    Two experiments are reported that were designed to investigate control/display arrangements having high stereotype strengths when using circular displays. Eight display locations relative to the operator and control were tested with rotational and translational controls situated on different planes according to the Frame of Reference Transformation Tool (FORT) model of Wickens et al. (2010). (Left. No, Right! Development of the Frame of Reference Transformation Tool (FORT), Proceedings of the Human Factors and Ergonomics Society 54th Annual Meeting, 54: 1022-1026). In many cases, there was little effect of display locations, indicating the importance of the Worringham and Beringer (1998. Directional stimulus-response compatibility: a test of three alternative principles. Ergonomics, 41(6), 864-880) Visual Field principle and an extension of this principle for rotary controls (Hoffmann and Chan (2013). The Worringham and Beringer 'visual field' principle for rotary controls. Ergonomics, 56(10), 1620-1624). The initial indicator position (12, 3, 6 and 9 o'clock) had a major effect on control/display stereotype strength for many of the six controls tested. Best display/control arrangements are listed for each of the different control types (rotational and translational) and for the planes on which they are mounted. Data have application where a circular display is used due to limited display panel space and applies to space-craft, robotics operators, hospital equipment and home appliances. Practitioner Summary: Circular displays are often used when there is limited space available on a control panel. Display/control arrangements having high stereotype strength are listed for four initial indicator positions. These arrangements are best for design purposes.

  17. Gender differences in response to emotional stress: an assessment across subjective, behavioral, and physiological domains and relations to alcohol craving. (United States)

    Chaplin, Tara M; Hong, Kwangik; Bergquist, Keri; Sinha, Rajita


    Women and men are at risk for different types of stress-related disorders, with women at greater risk for depression and anxiety and men at greater risk for alcohol-use disorders. The present study examines gender differences in emotional and alcohol craving responses to stress that may relate to this gender divergence in disorders. Healthy adult social drinkers (27 men, 27 women) were exposed to individually developed and calibrated stressful, alcohol-related, and neutral-relaxing imagery, 1 imagery per session, on separate days and in random order. Subjective emotions, behavioral/bodily responses, cardiovascular arousal [heart rate (HR), blood pressure (BP)], and self-reported alcohol craving were assessed. Women reported and displayed greater sadness and anxiety following stress than men and men had greater diastolic BP response than women. No gender differences in alcohol craving, systolic BP or HR were observed. Subjective, behavioral, and cardiovascular measures were correlated in both genders. However, for men, but not women, alcohol craving was associated with greater subjective emotion and behavioral arousal following stress and alcohol cues. These data suggest that men and women respond to stress differently, with women experiencing greater sadness and anxiety, while men show a greater integration of reward motivation (craving) and emotional stress systems. These findings have implications for the gender-related divergence in vulnerability for stress-related disorders, with women at greater risk for anxiety and depression than men, and men at greater risk for alcohol-use disorders than women.


    African Journals Online (AJOL)


    Jan 12, 2017 ... ABSTRACT. The adrenal glands of domesticated greater cane rats (Thryonomys swinderianus), were studied using histological and ultrastructural techniques. A total of seven (7) adult male greater cane rats, aged from 10-14 months, with an average weight of 1.89 kg (range: 1.6 -2.2 kg) were used in this ...

  19. Design of large format commercial display holograms (United States)

    Perry, John F. W.


    Commercial display holography is approaching a critical stage where the ability to compete with other graphic media will dictate its future. Factors involved will be cost, technical quality and, in particular, design. The tenuous commercial success of display holography has relied heavily on its appeal to an audience with little or no previous experience in the medium. Well designed images were scarce, leading many commercial designers to avoid holography. As the public became more accustomed to holograms, the excitement dissipated, leaving a need for strong visual design if the medium is to survive in this marketplace. Drawing on the vast experience of TV, rock music and magazine advertising, competitive techniques such as video walls, mural duratrans, laser light shows and interactive videos attract a professional support structure far greater than does holography. This paper will address design principles developed at Holographics North for large format commercial holography. Examples will be drawn from a number of foreign and domestic corporate trade exhibitions. Recommendations will also be made on how to develop greater awareness of a holographic design.

  20. An integrated alarm display design in digital nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Xiaojun [Department of Industrial Engineering, Tsinghua University, Beijing 100084 (China); Li, Zhizhong, E-mail: [Department of Industrial Engineering, Tsinghua University, Beijing 100084 (China); Song, Fei; Sang, Wei [Shanghai Nuclear Engineering Research and Design Institute, Shanghai 200233 (China)


    Highlights: • The effect of integrating system information into alarm displays in ACR was explored. • A bar-based integrated alarm display design was validated through a lab experiment. • The bar-based integrated design was preferred in detecting parameter trends. • The bar-based integrated design helped better understanding of the current scenario. - Abstract: In main control rooms of nuclear power plants (NPPs), operators often have to frequently switch their attention between alarm displays and system information displays to incorporate information from different screens. In this study, we proposed the idea of integrating system information into alarm displays. A bar-based integrated design of alarm display was proposed, and it was compared against a tile-based integrated design, and a traditional separate design through a lab experiment. To verify the idea of integration, forty-eight participants were randomly assigned to the three integration conditions to perform basic alarm response tasks, and their situation awareness levels and subjective evaluations were collected. The results indicated that the participants preferred the idea of integrating system information into alarm displays. Besides, the bar-based integrated display supported higher correct rate of answers to situation awareness questions related to the developing scenario than the tile-based integrated design. The idea of integrating system information into alarm displays merits further research and may be applicable to other safety–critical industries.

  1. Adaptive display luminance for viewing smartphones under low illuminance. (United States)

    Na, Nooree; Suk, Hyeon-Jeong


    The study investigates the optimal display luminance for viewing smartphones in conditions of low illuminance. This proposes a model of adaptive display in that display luminance changes gradually with the passage of watching time. It starts at a fairly low display luminance of 10 cd/m2, and after 10 seconds, the luminance increases slowly until it reaches 40 cd/m2 for 20 seconds and maintains the luminance. For the development of the model, an experiment was conducted to identify the optimal luminance for initial viewing and that for continuous viewing, as well as the change speed of display luminance. In order to validate the model, users' subjective judgments and activation of alpha rhythm were observed, and the result confirmed the superiority of the adaptive display luminance compared to the current display luminance in terms of physiological comfort and psychological satisfaction. It is expected that this study contributes to the pleasing use of displays at night under low illuminance by applying to diverse types of display devices.

  2. Ultraminiature, Micropower Multipurpose Display Project (United States)

    National Aeronautics and Space Administration — High information content electronic displays remain the most difficult element of the human-machine interface to effectively miniaturize. Mobile applications need a...

  3. Color speckle in laser displays (United States)

    Kuroda, Kazuo


    At the beginning of this century, lighting technology has been shifted from discharge lamps, fluorescent lamps and electric bulbs to solid-state lighting. Current solid-state lighting is based on the light emitting diodes (LED) technology, but the laser lighting technology is developing rapidly, such as, laser cinema projectors, laser TVs, laser head-up displays, laser head mounted displays, and laser headlamps for motor vehicles. One of the main issues of laser displays is the reduction of speckle noise1). For the monochromatic laser light, speckle is random interference pattern on the image plane (retina for human observer). For laser displays, RGB (red-green-blue) lasers form speckle patterns independently, which results in random distribution of chromaticity, called color speckle2).

  4. A wearable navigation display can improve attentiveness to the surgical field. (United States)

    Stewart, James; Billinghurst, Mark


    Surgical navigation is typically shown on a computer display that is distant from the patient, making it difficult for the surgeon to watch the patient while performing a guided task. We investigate whether a light-weight, untracked, wearable display (such as Google Glass, which has the same size and weight as corrective glasses) can improve attentiveness to the surgical field in a simulated surgical task. Three displays were tested: a computer monitor; a peripheral display above the eye; and a through-the-lens display in front of the eye. Twelve subjects performed a task to position and orient a tracked tool on a plastic femur. Both wearable displays were tested on the dominant and non-dominant eyes of each subject. Attentiveness during the task was measured by the time taken to respond to randomly illuminated LEDs on the femur. Attentiveness was improved with the wearable displays at the cost of a decrease in accuracy. The through-the-lens display performed better than the peripheral display. The peripheral display performed better when on the dominant eye, while the through-the-lens display performed better when on the non-dominant eye. Attentiveness to the surgical field can be improved with the use of a light-weight, untracked, wearable display. A through-the-lens display performs better than a peripheral display, and both perform better than a computer monitor. Eye dominance should be considered when positioning the display.

  5. A new display stream compression standard under development in VESA (United States)

    Jacobson, Natan; Thirumalai, Vijayaraghavan; Joshi, Rajan; Goel, James


    The Advanced Display Stream Compression (ADSC) codec project is in development in response to a call for technologies from the Video Electronics Standards Association (VESA). This codec targets visually lossless compression of display streams at a high compression rate (typically 6 bits/pixel) for mobile/VR/HDR applications. Functionality of the ADSC codec is described in this paper, and subjective trials results are provided using the ISO 29170-2 testing protocol.

  6. Head-Worn Displays: A Review (United States)

    Cakmakci, Ozan; Rolland, Jannick


    Head-worn display design is inherently an interdisciplinary subject fusing optical engineering, optical materials, optical coatings, electronics, manufacturing techniques, user interface design, computer science, human perception, and physiology for assessing these displays. This paper summarizes the state-of-the-art in head-worn display design (HWD) and development. This review is focused on the optical engineering aspects, divided into different sections to explore principles and applications. Building on the guiding fundamentals of optical design and engineering, the principles section includes a summary of microdisplay or laser sources, the Lagrange invariant for understanding the trade-offs in optical design of HWDs, modes of image presentation (i.e., monocular, biocular, and stereo) and operational modes such as optical and video see-through. A brief summary of the human visual system pertinent to the design of HWDs is provided. Two optical design forms, namely, pupil forming and non-pupil forming are discussed. We summarize the results from previous design work using aspheric, diffractive, or holographic elements to achieve compact and lightweight systems. The applications section is organized in terms of field of view requirements and presents a reasonable collection of past designs.

  7. P3-1: Ophthalmologic Factors Influencing Asthenopia with Watching 3D Displays

    Directory of Open Access Journals (Sweden)

    Sungwook Wee


    Full Text Available Purpose: To identify ophthalmologic factors influencing asthenopia while watching 3D displays. Methods: 30 adult subjects without ophthalmologic abnormality watched the same 3D displays for 30 minutes. Each subject's far and near visual acuity, near points of accommodation and convergence, amplitude of fusional convergence and divergence, stereopsis, angle of phoric deviation, tear break-up time, and temperature of ocular surface before and after watching 3D displays were measured. And surveys for subjective symptoms right after watching 3D displays were conducted. The above-mentioned experiments were performed equally with 2D displays for detection of innate influence of 3D displays. Results: The near points of accommodation and convergence were significantly changed after watching 3D displays (p < .05 compared to 2D displays. And all 10 subjective symptoms were significantly increased after watching 3D displays (p < .05. Conclusion: The accommodation and binocular vergence are predominant ophthalmologic factors that might influence asthenopia significantly while watching 3D displays. Subjective visual discomfort significantly increases with watching 3D displays, and more specific evaluation should be added for detecting the practically related factors with asthenopia.

  8. Implementation of PIC Based LED Displays


    Htet Htet Thit San; Chaw Myat Nwe; Hla Myo Tun


    This paper explains the project which is a special kind of LED Display Board for performing dance movement according to the rhythm of music. Nowadays, LED display boards are widely used in advertising and other applications. LED display boards can also be used indoors or outdoors. The objective of this system is to design a display panel by using several dozens of LED matrix display. The display pattern can desire to be changed easily and modified by the user. This LED display...

  9. On-line data display (United States)

    Lang, Sherman Y. T.; Brooks, Martin; Gauthier, Marc; Wein, Marceli


    A data display system for embedded realtime systems has been developed for use as an operator's user interface and debugging tool. The motivation for development of the On-Line Data Display (ODD) have come from several sources. In particular the design reflects the needs of researchers developing an experimental mobile robot within our laboratory. A proliferation of specialized user interfaces revealed a need for a flexible communications and graphical data display system. At the same time the system had to be readily extensible for arbitrary graphical display formats which would be required for data visualization needs of the researchers. The system defines a communication protocol transmitting 'datagrams' between tasks executing on the realtime system and virtual devices displaying the data in a meaningful way on a graphical workstation. The communication protocol multiplexes logical channels on a single data stream. The current implementation consists of a server for the Harmony realtime operating system and an application written for the Macintosh computer. Flexibility requirements resulted in a highly modular server design, and a layered modular object- oriented design for the Macintosh part of the system. Users assign data types to specific channels at run time. Then devices are instantiated by the user and connected to channels to receive datagrams. The current suite of device types do not provide enough functionality for most users' specialized needs. Instead the system design allows the creation of new device types with modest programming effort. The protocol, design and use of the system are discussed.

  10. Three-dimensional display technologies (United States)

    Geng, Jason


    The physical world around us is three-dimensional (3D), yet traditional display devices can show only two-dimensional (2D) flat images that lack depth (i.e., the third dimension) information. This fundamental restriction greatly limits our ability to perceive and to understand the complexity of real-world objects. Nearly 50% of the capability of the human brain is devoted to processing visual information [Human Anatomy & Physiology (Pearson, 2012)]. Flat images and 2D displays do not harness the brain’s power effectively. With rapid advances in the electronics, optics, laser, and photonics fields, true 3D display technologies are making their way into the marketplace. 3D movies, 3D TV, 3D mobile devices, and 3D games have increasingly demanded true 3D display with no eyeglasses (autostereoscopic). Therefore, it would be very beneficial to readers of this journal to have a systematic review of state-of-the-art 3D display technologies. PMID:25530827

  11. Medical telementoring using an augmented reality transparent display. (United States)

    Andersen, Daniel; Popescu, Voicu; Cabrera, Maria Eugenia; Shanghavi, Aditya; Gomez, Gerardo; Marley, Sherri; Mullis, Brian; Wachs, Juan P


    The goal of this study was to design and implement a novel surgical telementoring system called the System for Telementoring with Augmented Reality (STAR) that uses a virtual transparent display to convey precise locations in the operating field to a trainee surgeon. This system was compared with a conventional system based on a telestrator for surgical instruction. A telementoring system was developed and evaluated in a study which used a 1 × 2 between-subjects design with telementoring system, that is, STAR or conventional, as the independent variable. The participants in the study were 20 premedical or medical students who had no prior experience with telementoring. Each participant completed a task of port placement and a task of abdominal incision under telementoring using either the STAR or the conventional system. The metrics used to test performance when using the system were placement error, number of focus shifts, and time to task completion. When compared with the conventional system, participants using STAR completed the 2 tasks with less placement error (45% and 68%) and with fewer focus shifts (86% and 44%), but more slowly (19% for each task). Using STAR resulted in decreased annotation placement error, fewer focus shifts, but greater times to task completion. STAR placed virtual annotations directly onto the trainee surgeon's field of view of the operating field by conveying location with great accuracy; this technology helped to avoid shifts in focus, decreased depth perception, and enabled fine-tuning execution of the task to match telementored instruction, but led to greater times to task completion. Copyright © 2016 Elsevier Inc. All rights reserved.


    Hafeez, Najmus Sahar; Ganapathy, Sugantha; Sondekoppam, Rakesh; Johnson, Marjorie; Merrifield, Peter; Galil, Khadry A


    The greater palatine nerve and the greater palatine canal are common sites for maxillary anesthesia during dental and maxillo-facial procedures. The greater palatine nerve is thought to course as a single trunk through the greater palatine canal, branching after its exit from the greater palatine foramen. We describe intra-canalicular branching variations of the greater palatine nerve found in 8 of 20 embalmed dissection specimens. Such variation is previously unreported in the literature. We characterize the variations in branching pattern and discuss the possible implications for clinical practice.

  13. To 'display' or not to 'display'- that is the peptide

    CSIR Research Space (South Africa)

    Crampton, Michael C


    Full Text Available Microbial cell surface display is the anchoring of a heterologous protein or peptide (passenger) to the outside of the cell wall as a fusion to a cell surface associated protein (carrier). This technology has been used extensively for both...

  14. Cholesteric Liquid Crystal Based Reflex Color Reflective Displays (United States)

    Khan, Asad


    Bistable color cholesteric liquid crystal displays are unique LCDs that exhibit high reflectivity, good contrast, extremely low power operation, and are amenable to versatile roll-to-roll manufacturing. The display technology, now branded as Reflex has been in commercialized products since 1996. It has been the subject of extensive research and development globally by a variety of parties in both academic and industrial settings. Today, the display technology is in volume production for applications such as dedicated eWriters (Boogie Board), full color electronic skins (eSkin), and displays for smart cards. The flexibility comes from polymerization induced phase separation using unique materials unparalleled in any other display technology. The blend of monomers, polymers, cross linkers, and other components along with nematic liquid crystals and chiral dopants is created and processed in such ways so as to enable highly efficient manufactrable displays using ultra thin plastic substrates -- often as thin as 50μm. Other significant aspects include full color by stacking or spatial separation, night vision capability, ultra high resolution, as well as active matrix capabilities. Of particular note is the stacking approach of Reflex based displays to show full color. This approach for reflective color displays is unique to this technology. Owing to high transparency in wavelength bands outside the selective reflection band, three primarily color layers can be stacked on top of each other and reflect without interfering with other layers. This highly surprising architecture enables the highest reflectivity of any other reflective electronic color display technology. The optics, architecture, electro-topics, and process techniques will be discussed. This presentation will focus on the physics of the core technology and color, it's evolution from rigid glass based displays to flexible displays, development of products from the paradigm shifting concepts to consumer

  15. 'No power' (green) electrowetting display (United States)

    Jentsch, Michael; Rawert, Juergen; Jerosch, Dieter; Blankenbach, Karlheinz


    Electrowetting displays were first reported in 1981, several approaches were examined. However, ADT's "Droplet- Driven-Displays" technology is the only bistable one which makes them very attractive for energy-saving systems. That means that the power supply can completely shut off after changing the content and it will keep its information for years. More features that make the ADT approach very unique are paper like white appearance (even in the powerless OFFstate) and the capability for backlighting (most of the other e-paper technologies like electrophoretics can not be backlighted). Further achievements are a white state reflectance of about 70% resulting in sunlight readability and a pixel size in the range from 0.3mm to 10mm. Summarizing, ADT's electrowetting technology is highly suitable for lowest power (means eco-friendly or "green") displays.

  16. Drag and drop display & builder

    Energy Technology Data Exchange (ETDEWEB)

    Bolshakov, Timofei B.; Petrov, Andrey D.; /Fermilab


    The Drag and Drop (DnD) Display & Builder is a component-oriented system that allows users to create visual representations of data received from data acquisition systems. It is an upgrade of a Synoptic Display mechanism used at Fermilab since 2002. Components can be graphically arranged and logically interconnected in the web-startable Project Builder. Projects can be either lightweight AJAX- and SVG-based web pages, or they can be started as Java applications. The new version was initiated as a response to discussions between the LHC Controls Group and Fermilab.

  17. NIST display colorimeter calibration facility (United States)

    Brown, Steven W.; Ohno, Yoshihiro


    A facility has been developed at the National Institute of Standards and Technology (NIST) to provide calibration services for color-measuring instruments to address the need for improving and certifying the measurement uncertainties of this type of instrument. While NIST has active programs in photometry, flat panel display metrology, and color and appearance measurements, these are the first services offered by NIST tailored to color-measuring instruments for displays. An overview of the facility, the calibration approach, and associated uncertainties are presented. Details of a new tunable colorimetric source and the development of new transfer standard instruments are discussed.

  18. 40 CFR 91.1007 - Display exemption. (United States)


    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Display exemption. 91.1007 Section 91....1007 Display exemption. An uncertified marine SI engine is a display engine when it is to be used solely for display purposes, will only be operated incident and necessary to the display purpose, and...

  19. 40 CFR 89.907 - Display exemption. (United States)


    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Display exemption. 89.907 Section 89....907 Display exemption. Where an uncertified nonroad engine is a display engine to be used solely for display purposes, will only be operated incident and necessary to the display purpose, and will not be...

  20. Adapting deployed touch screen displays for NVG compatibility (United States)

    Gaudette, Claude


    As the battlefield becomes "digitized", all arms of the military are deploying COTS displays in the form of Portable Notebooks, Kneeboards, GPS and PDA's in ever greater numbers. Many of these COTS equipments and associated displays use full color LCD's and resistive touch panels as the operator-interface. These displays are a challenge to those who must modify the COTS equipment for NVG compatibility. Traditional NVG filter options have relatively poor color rendering and are too thick or rigid to interface with touch panels. In addition, many of these displays do not have sufficient dimming capabilities to allow covert night-time operations and do not have sufficient luminance for daytime operations. Polymeric materials recently developed by Wamco have been specifically designed for applications where traditional NVG filters have failed. These applications will be discussed and quantified in terms of NVG Compatibility, Color Rendering, Luminance Contrast and Daytime Readability, Touch Screen Sensitivity and Environmental Performance.

  1. Two stages of parafoveal processing during reading: Evidence\\ud from a display change detection task


    Angele, Bernhard; Slattery, Tim; Rayner, K.


    We used a display change detection paradigm (Slattery, Angele, & Rayner Human Perception and Performance, 37, 1924?1938 2011) to investigate whether display change detection uses?orthographic regularity and whether detection is affected by the processing difficulty of the word preceding the boundary that triggers the display change. Subjects were significantly more sensitive to display changes when the change was from a nonwordlike preview than when the change was from a wordlike preview, but...

  2. After-effects of TFT-LCD display polarity and display colour on the detection of low-contrast objects. (United States)

    Mayr, Susanne; Buchner, Axel


    Participants performed a word-non-word discrimination task within a car control display emulated on a thin film transistor liquid-crystal display (TFT-LCD). The task simulated an information read-out from a TFT-LCD-based instrument panel. Subsequently, participants performed a low-contrast object detection task that simulated the detection of objects during night-time driving. In experiment 1, words/non-words were presented black-on-white (positive polarity) or white-on-black (negative polarity). In experiments 2 and 3, display colour was additionally manipulated. A positive polarity advantage in the discrimination task was consistently observed. In contrast, positive displays interfered more than negative displays with subsequent detection. The detrimental after-effect of positive polarity displays was strong with white and blue, reduced with amber and absent with red displays. Subjective measures showed a preference for blue over red, but a slight advantage for amber over blue. Implications for TFT-LCD design are derived from the results. STATEMENT OF RELEVANCE: When using TFT-LCDs as car instrument panels, positive polarity red TFT-LCDs are very likely to lead to good instrument readability while at the same time minimising - relative to other colours - the negative effects of an illuminated display on low-contrast object detection during night-time driving.

  3. Lateralisation of aggressive displays in a tephritid fly (United States)

    Benelli, Giovanni; Donati, Elisa; Romano, Donato; Stefanini, Cesare; Messing, Russell H.; Canale, Angelo


    Lateralisation (i.e. different functional and/or structural specialisations of the left and right sides of the brain) of aggression has been examined in several vertebrate species, while evidence for invertebrates is scarce. In this study, we investigated lateralisation of aggressive displays (boxing with forelegs and wing strikes) in the Mediterranean fruit fly, Ceratitis capitata. We attempted to answer the following questions: (1) do medflies show lateralisation of aggressive displays at the population-level; (2) are there sex differences in lateralisation of aggressive displays; and (3) does lateralisation of aggression enhance fighting success? Results showed left-biased population-level lateralisation of aggressive displays, with no consistent differences among sexes. In both male-male and female-female conflicts, aggressive behaviours performed with left body parts led to greater fighting success than those performed with right body parts. As we found left-biased preferential use of body parts for both wing strikes and boxing, we predicted that the left foreleg/wing is quicker in exploring/striking than the right one. We characterised wing strike and boxing using high-speed videos, calculating mean velocity of aggressive displays. For both sexes, aggressive displays that led to success were faster than unsuccessful ones. However, left wing/legs were not faster than right ones while performing aggressive acts. Further research is needed on proximate causes allowing enhanced fighting success of lateralised aggressive behaviour. This is the first report supporting the adaptive role of lateralisation of aggressive displays in insects.

  4. Display Apple M7649Zm

    CERN Multimedia


    It was Designed for the Power Mac G4. This Apple studio display gives you edge-to-edge distortion-free images. With more than 16.7 million colors and 1,280 x 1,024 dpi resolution, you view brilliant and bright images on this Apple 17-inch monitor.

  5. Real Time Sonic Boom Display (United States)

    Haering, Ed


    This presentation will provide general information about sonic boom mitigation technology to the public in order to supply information to potential partners and licensees. The technology is a combination of flight data, atmospheric data and terrain information implemented into a control room real time display for flight planning. This research is currently being performed and as such, any results and conclusions are ongoing.

  6. Solar active region display system (United States)

    Golightly, M.; Raben, V.; Weyland, M.


    The Solar Active Region Display System (SARDS) is a client-server application that automatically collects a wide range of solar data and displays it in a format easy for users to assimilate and interpret. Users can rapidly identify active regions of interest or concern from color-coded indicators that visually summarize each region's size, magnetic configuration, recent growth history, and recent flare and CME production. The active region information can be overlaid onto solar maps, multiple solar images, and solar difference images in orthographic, Mercator or cylindrical equidistant projections. Near real-time graphs display the GOES soft and hard x-ray flux, flare events, and daily F10.7 value as a function of time; color-coded indicators show current trends in soft x-ray flux, flare temperature, daily F10.7 flux, and x-ray flare occurrence. Through a separate window up to 4 real-time or static graphs can simultaneously display values of KP, AP, daily F10.7 flux, GOES soft and hard x-ray flux, GOES >10 and >100 MeV proton flux, and Thule neutron monitor count rate. Climatologic displays use color-valued cells to show F10.7 and AP values as a function of Carrington/Bartel's rotation sequences - this format allows users to detect recurrent patterns in solar and geomagnetic activity as well as variations in activity levels over multiple solar cycles. Users can customize many of the display and graph features; all displays can be printed or copied to the system's clipboard for "pasting" into other applications. The system obtains and stores space weather data and images from sources such as the NOAA Space Environment Center, NOAA National Geophysical Data Center, the joint ESA/NASA SOHO spacecraft, and the Kitt Peak National Solar Observatory, and can be extended to include other data series and image sources. Data and images retrieved from the system's database are converted to XML and transported from a central server using HTTP and SOAP protocols, allowing

  7. JTEC panel on display technologies in Japan (United States)

    Tannas, Lawrence E., Jr.; Glenn, William E.; Credelle, Thomas; Doane, J. William; Firester, Arthur H.; Thompson, Malcolm


    This report is one in a series of reports that describes research and development efforts in Japan in the area of display technologies. The following are included in this report: flat panel displays (technical findings, liquid crystal display development and production, large flat panel displays (FPD's), electroluminescent displays and plasma panels, infrastructure in Japan's FPD industry, market and projected sales, and new a-Si active matrix liquid crystal display (AMLCD) factory); materials for flat panel displays (liquid crystal materials, and light-emissive display materials); manufacturing and infrastructure of active matrix liquid crystal displays (manufacturing logistics and equipment); passive matrix liquid crystal displays (LCD basics, twisted nematics LCD's, supertwisted nematic LCD's, ferroelectric LCD's, and a comparison of passive matrix LCD technology); active matrix technology (basic active matrix technology, investment environment, amorphous silicon, polysilicon, and commercial products and prototypes); and projection displays (comparison of Japanese and U.S. display research, and technical evaluation of work).

  8. Display Sharing: An Alternative Paradigm (United States)

    Brown, Michael A.


    The current Johnson Space Center (JSC) Mission Control Center (MCC) Video Transport System (VTS) provides flight controllers and management the ability to meld raw video from various sources with telemetry to improve situational awareness. However, maintaining a separate infrastructure for video delivery and integration of video content with data adds significant complexity and cost to the system. When considering alternative architectures for a VTS, the current system's ability to share specific computer displays in their entirety to other locations, such as large projector systems, flight control rooms, and back supporting rooms throughout the facilities and centers must be incorporated into any new architecture. Internet Protocol (IP)-based systems also support video delivery and integration. IP-based systems generally have an advantage in terms of cost and maintainability. Although IP-based systems are versatile, the task of sharing a computer display from one workstation to another can be time consuming for an end-user and inconvenient to administer at a system level. The objective of this paper is to present a prototype display sharing enterprise solution. Display sharing is a system which delivers image sharing across the LAN while simultaneously managing bandwidth, supporting encryption, enabling recovery and resynchronization following a loss of signal, and, minimizing latency. Additional critical elements will include image scaling support, multi -sharing, ease of initial integration and configuration, integration with desktop window managers, collaboration tools, host and recipient controls. This goal of this paper is to summarize the various elements of an IP-based display sharing system that can be used in today's control center environment.

  9. Setting the Greater Mekong Subregion - Development Analysis ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... in 1997-98, its primary goal is to foster a greater understanding of development issues and equip its member institutes and researchers with expertise, skills, and knowledge using a peer-to-peer approach. ... It will allow GMS-DAN to continue to contribute leadership and expertise to development research in the region.

  10. Greater Sao Paulo Newer Library Automation. (United States)

    McLean, Dulce Didio


    This followup to a 1981 study presents descriptions of automated projects or activities in academic, public, and special libraries or information centers in the Greater Sao Paulo region that developed from 1981 through 1987. It is noted that an overall increase in the level of automation since 1981 has been observed. (four references) (Author/MAB)

  11. Greater Somalia, the never-ending dream?

    DEFF Research Database (Denmark)

    Zoppi, Marco


    This paper provides an historical analysis of the concept of Greater Somalia, the nationalist project that advocates the political union of all Somali-speaking people, including those inhabiting areas in current Djibouti, Ethiopia and Kenya. The Somali territorial unification project of “lost ter...

  12. Investigating the Importance of Stereo Displays for Helicopter Landing Simulation (United States)


    60 was most closely aligned vertically with the windsock pole . At the beginning of each trial, the aircraft quickly descended into place from a...However, this difference diminishes as the separation between the tail wheel and pole is increased. Experiment 2 Subjects Forty subjects volunteered to...displayed separately to the left and right eyes) moved apart in the vertical direction. The direction of motion then reversed , and the

  13. Effect of vibration on visual display terminal work performance. (United States)

    Hsieh, Yao-Hung; Lin, Chiuhsiang Joe; Chen, Hsiao-Ching


    Today electronic visual displays have dramatic use in daily life. Reading these visual displays is subject to their vibration. Using a software-simulation of a vibrated environment, the study investigated the effect of vibration on visual performance and fatigue for several numerical display design characteristics including the font size and the number of digits displayed. Both the frequency and magnitude of vibration had significant effects on the reaction time, accuracy, and visual fatigue. 10 graduate students (23-30 years old; M = 25.6), randomly tested in this experiment, were offered about 25 U.S. dollars for their participation. Numbers in vertical presentation were affected more in vertical vibration than those in horizontal presentation. Analysis showed whenever the display is used in vibration environment, an increased font size may be an effective way to compensate the adverse effect of vibration. The software design of displayed materials must be designed to take the motion effect into consideration to increase the quality of the screen display.

  14. The use of interpractive graphic displays for interpretation of surface design parameters (United States)

    Talcott, N. A., Jr.


    An interactive computer graphics technique known as the Graphic Display Data method has been developed to provide a convenient means for rapidly interpreting large amounts of surface design data. The display technique should prove valuable in such disciplines as aerodynamic analysis, structural analysis, and experimental data analysis. To demonstrate the system's features, an example is presented of the Graphic Data Display method used as an interpretive tool for radiation equilibrium temperature distributions over the surface of an aerodynamic vehicle. Color graphic displays were also examined as a logical extension of the technique to improve its clarity and to allow the presentation of greater detail in a single display.

  15. Transparent stereoscopic display and application (United States)

    Ranieri, Nicola; Seifert, Hagen; Gross, Markus


    Augmented reality has become important to our society as it can enrich the actual world with virtual information. Transparent screens offer one possibility to overlay rendered scenes with the environment, acting both as display and window. In this work, we review existing transparent back-projection screens for the use with active and passive stereo. Advantages and limitations are described and, based on these insights, a passive stereoscopic system using an anisotropic back-projection foil is proposed. To increase realism, we adapt rendered content to the viewer's position using a Kinect tracking system, which adds motion parallax to the binocular cues. A technique well known in control engineering is used to decrease latency and increase frequency of the tracker. Our transparent stereoscopic display prototype provides immersive viewing experience and is suitable for many augmented reality applications.

  16. Game engines and immersive displays (United States)

    Chang, Benjamin; Destefano, Marc


    While virtual reality and digital games share many core technologies, the programming environments, toolkits, and workflows for developing games and VR environments are often distinct. VR toolkits designed for applications in visualization and simulation often have a different feature set or design philosophy than game engines, while popular game engines often lack support for VR hardware. Extending a game engine to support systems such as the CAVE gives developers a unified development environment and the ability to easily port projects, but involves challenges beyond just adding stereo 3D visuals. In this paper we outline the issues involved in adapting a game engine for use with an immersive display system including stereoscopy, tracking, and clustering, and present example implementation details using Unity3D. We discuss application development and workflow approaches including camera management, rendering synchronization, GUI design, and issues specific to Unity3D, and present examples of projects created for a multi-wall, clustered, stereoscopic display.

  17. Human Vocabulary Use as Display

    Directory of Open Access Journals (Sweden)

    Jeremy Rosenberg


    Full Text Available The average human vocabulary consists of approximately 20,000 word families, yet only 6000-7000 word families are required to understand most communication. One possible explanation for this level of redundancy is that vocabulary size is selected as a fitness indicator and is used for display. Human vocabulary size correlates highly with measurable intelligence and when choosing potential mates individuals actively prefer other correlates of intelligence, such as education. Here we show that males used more low frequency words after an imaginary romantic encounter with a young female shown in a photograph relative to when they viewed photographs of older females. Females used fewer low frequency words when they imagined a romantic encounter with a young male shown in a photograph relative to when they viewed photographs of older males. These differences in male and female vocabulary displays may be related to sex differences in investment costs in offspring.

  18. Measuring visual discomfort associated with 3D displays

    NARCIS (Netherlands)

    Lambooij, M.; Fortuin, M.; IJsselsteijn, W.A.; Heyndrickx, I.


    Some people report visual discomfort when watching 3D displays. For both the objective measurement of visual fatigue and the subjective measurement of visual discomfort, we would like to arrive at general indicators that are easy to apply in perception experiments. Previous research yielded

  19. Holocene peatland initiation in the Greater Everglades (United States)

    Dekker, Stefan; de Boer, Hugo; Dermody, Brian; Wagner-Cremer, Friederike; Wassen, Martin; Eppinga, Maarten


    The mechanisms involved in the initiation and development of the Greater Everglades peatland ecosystems in South Florida (USA) remain a topic of discussion. In this study, we present an overview of basal ages of peat deposits in South Florida, which shows two major episodes of peatland initiation between 7.0-4.5 kyr and 3.5-2.0 kyr. Our analysis of regional climate proxy datasets led to three alternative hypotheses that may explain the timing and duration of these two peatland initiation episodes: (1) decreased drainage due to relative sea level (RSL) rise during the Holocene (2) gradual increase in precipitation throughout the Holocene, and (3) a combination of increasing precipitation, rising RSL and oscillations in the climate system. We test whether these three hypotheses can explain the pattern of initiation and development of the Greater Everglades peatlands using models that simulate the non-linear processes involved in peat production and decomposition in combination with the local drainage conditions of Southern Florida. The model results suggest that RSL-rise alone cannot predict the onset of peat initiation in the Greater Everglades using our model setup. The model also implies that the climate was wet enough for peat development also during the early Holocene. The first two hypothesized mechanisms in combination with climate oscillations may explain the onset of peat accumulation at 8.2 kyr BP. The two-phased character of peat land initiation may be explained by the spatial distribution of local drainage conditions. As peatland development is highly non-linear, our model uncovers a mechanistic way how peats can suddenly shift from a dry high equilibrium to a wet low equilibrium resulting in lake formation as observed in paleo-ecological studies in the Greater Everglades.

  20. An Experimental Investigation of Improving Human Problem-Solving Performance by Guiding Attention and Adaptively Providing Details on Information Displays (United States)


    1S. SUBJECT TERMS cognitive model, empirical studies, information display design , eye tracking 16. SECURITY CLASSIFICATION OF: 17. LIMITATION 18...basic experimental research of how a cognitive model could be applied to adaptive information display design , and how such displays affected human...create a reactive information display design toolkit to make the process of prototyping and evaluating such displays easier in future. 4. Long Term

  1. How display polarity and lighting conditions affect the pupil size of VDT operators. (United States)

    Taptagaporn, S; Saito, S


    This study ascertained that CRTs using a positive display polarity (dark characters on bright background) are ergonomically more appropriate for VDT operators than ones using a negative display polarity (bright characters on dark background), using both physiological and psychological indices. Differences of pupil size and subjective evaluation of visual comfort while undertaking visual tasks were examined for six experimental conditions (two CRT display types in three different illuminated levels). Pupil diameter was not affected greatly when working with the positive display for different illumination levels. The positive display also caused smaller differences in pupil diameter when viewing visual targets, namely CRT display, script, and keyboard, for all lighting conditions. The majority of the subjects also appreciated working with the positive CRT display at a regular office illumination level.

  2. Integration of Head-Up Display system in automotive industry: a generalized application (United States)

    Betancur, J. Alejandro; Osorio, Gilberto; Mejía, Alejandro


    Throughout the development of the automotive industry, supporting activities related with driving has been material of analysis and experimentation, always seeking new ways to achieve greater safety for the driver and passengers. With the purpose of contributing to this topic, in order to contribute to this subject, this paper summarizes from past research experiences the use of Head-Up Display systems applied to the automobile industry, covering it from two main points of discussion: the first one, from a technical point of view, in which the main principles of optical design associated with a moderate-cost experimental set up are brought out; and the second one, an operational approach where an applied driving graphical interface is presented. Up to now, the results suggest that the experimental set up here discussed could be adaptable to any automobile vehicle, but it is needed further research and investment.

  3. Application of multi-function display and control technology (United States)

    Spiger, R. J.; Farrell, R. J.; Holcomb, G. A.


    The NASA orbiter spacecraft incorporates a complex array of systems, displays, and controls. The incorporation of discrete dedicated controls into a multifunction display and control system (MFDCS) offers the potential for savings in weight, power, panel space, and crew training time. Technology identified as applicable to a MFDCS is applied to the orbiter orbital maneuvering system (OMS) and the electrical power distribution and control system (EPDCS) to derive concepts for a MFDCS design. Several concepts of varying degrees of performance and complexity are discussed and a suggested concept for further development is presented in greater detail. Both the hardware and software aspects and the human factors considerations of the designs are included.

  4. 24-Month-Old Children with Larger Oral Vocabularies Display Greater Academic and Behavioral Functioning at Kindergarten Entry (United States)

    Morgan, Paul L.; Farkas, George; Hillemeier, Marianne M.; Hammer, Carol Scheffner; Maczuga, Steve


    Data were analyzed from a population-based, longitudinal sample of 8,650 U.S. children to (a) identify factors associated with or predictive of oral vocabulary size at 24 months of age and (b) evaluate whether oral vocabulary size is uniquely predictive of academic and behavioral functioning at kindergarten entry. Children from higher…

  5. Preliminary display comparison for dental diagnostic applications (United States)

    Odlum, Nicholas; Spalla, Guillaume; van Assche, Nele; Vandenberghe, Bart; Jacobs, Reinhilde; Quirynen, Marc; Marchessoux, Cédric


    The aim of this study is to predict the clinical performance and image quality of a display system for viewing dental images. At present, the use of dedicated medical displays is not uniform among dentists - many still view images on ordinary consumer displays. This work investigated whether the use of a medical display improved the perception of dental images by a clinician, compared to a consumer display. Display systems were simulated using the MEdical Virtual Imaging Chain (MEVIC). Images derived from two carefully performed studies on periodontal bone lesion detection and endodontic file length determination, were used. Three displays were selected: a medical grade one and two consumer displays (Barco MDRC-2120, Dell 1907FP and Dell 2007FPb). Some typical characteristics of the displays are evaluated by measurements and simulations like the Modulation Function (MTF), the Noise Power Spectrum (NPS), backlight stability or calibration. For the MTF, the display with the largest pixel pitch has logically the worst MTF. Moreover, the medical grade display has a slightly better MTF and the displays have similar NPS. The study shows the instability effect for the emitted intensity of the consumer displays compared to the medical grade one. Finally the study on the calibration methodology of the display shows that the signal in the dental images will be always more perceivable on the DICOM GSDF display than a gamma 2,2 display.

  6. The case for transparent depth display

    NARCIS (Netherlands)

    Kooi, F.L.


    Purpose: The continuing developments in display technology have resulted in the ability to present increasing amounts of data on computer displays. One of the coming break-throughs is generally believed to be the introduction of '3-D displays': displays with a true sense of depth. Though these types

  7. Density Gradient Columns for Chemical Displays. (United States)

    Guenther, William B.


    Procedures for preparing density gradient columns for chemical displays are presented. They include displays illustrating acid-base reactions, metal ion equilibria, and liquid density. The lifetime of these metastable displays is surprising, some lasting for months in display cabinets. (JN)

  8. 40 CFR 90.907 - Display exemption. (United States)


    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Display exemption. 90.907 Section 90... of Nonroad Engines from Regulations § 90.907 Display exemption. Where an uncertified nonroad engine is a display engine to be used solely for display purposes, will only be operated incident and...

  9. 40 CFR 85.1707 - Display exemption. (United States)


    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Display exemption. 85.1707 Section 85... Engines § 85.1707 Display exemption. Where an uncertified vehicle or engine is a display vehicle or engine to be used solely for display purposes, will not be operated on the public streets or highways except...

  10. Visual search asymmetries in heavy clutter: implications for display design. (United States)

    Yamani, Yusuke; McCarley, Jason S


    An experiment aimed to test whether design of symbology to produce visual search asymmetries might facilitate target detection in cluttered displays. A visual search asymmetry exists between two stimuli when a target of one type is found efficiently among distractors of the second type but a target of the second type is found with difficulty among distractors of the first type. Asymmetries have generally been studied within relatively sparse displays. In the present study, the authors tested whether an asymmetry driven by stimulus familiarity persists within heavily cluttered imagery. In this study, 10 participants performed a visual search task using stimuli (canonical vs. reversed Ns) known to produce a search asymmetry. Search stimuli were embedded within geospatial images containing either low or high levels of clutter. A decision theoretic index of sensitivity served as the dependent measure. The search asymmetry was robust against the presence of heavy display clutter. Specifically, sensitivity was greater when the target was a reversed N rather than an N, and this pattern remained within cluttered displays. Time-accuracy analysis revealed that the search asymmetry increased the rate of information accumulation roughly equally within low- and high- clutter images. Search asymmetries are robust against heavy, spatially continuous visual clutter. Design of display symbology to produce visual search asymmetries can offset the costs of visual clutter, maximizing detectability of task-critical information in complex displays.

  11. Can a glass cockpit display help (or hinder) performance of novices in simulated flight training? (United States)

    Wright, Stephen; O'Hare, David


    The analog dials in traditional GA aircraft cockpits are being replaced by integrated electronic displays, commonly referred to as glass cockpits. Pilots may be trained on glass cockpit aircraft or encounter them after training on traditional displays. The effects of glass cockpit displays on initial performance and potential transfer effects between cockpit display configurations have yet to be adequately investigated. Flight-naïve participants were trained on either a simulated traditional display cockpit or a simulated glass display cockpit. Flight performance was measured in a test flight using either the same or different cockpit display. Loss of control events and accuracy in controlling altitude, airspeed and heading, workload, and situational awareness were assessed. Preferences for cockpit display configurations and opinions on ease of use were also measured. The results revealed consistently poorer performance on the test flight for participants using the glass cockpit compared to the traditional cockpit. In contrast the post-flight questionnaire data revealed a strong subjective preference for the glass cockpit over the traditional cockpit displays. There was only a weak effect of prior training. The specific glass cockpit display used in this study was subjectively appealing but yielded poorer flight performance in participants with no previous flight experience than a traditional display. Performance data can contradict opinion data. The design of glass cockpit displays may present some difficulties for pilots in the very early stages of training. Copyright © 2014 Elsevier Ltd and The Ergonomics Society. All rights reserved.

  12. Full color waveguide liquid crystal display. (United States)

    Zhou, Xiaochen; Qin, Guangkui; Wang, Long; Chen, Zhuo; Xu, Xiaoguang; Dong, Youmei; Moheghi, Alireza; Yang, Deng-Ke


    We developed a waveguide liquid crystal display from a liquid crystal (LC)/polymer composite. It does not need polarizers or color filters. It is illuminated by color LEDs installed on its edge. The light produced by the edge LEDs is coupled into the display and then waveguided through the display. When the LC is in the transparent state, the incident light is waveguided through and no light comes out of the viewing side of the display. When the LC is in the scattering state, the incident light is scattered and comes out of the display. It can be used either for transparent display or for direct view display. The composite has a submillisecond response time, and a field sequential scheme can be used to display full color images. Because the display does not need polarizers or color filters, its energy efficiency is much higher than current liquid crystal displays.

  13. Effects of floral display size on male and female reproductive success in Mimulus ringens. (United States)

    Karron, Jeffrey D; Mitchell, Randall J


    The number of flowers blooming simultaneously on a plant may have profound consequences for reproductive success. Large floral displays often attract more pollinator visits, increasing outcross pollen receipt. However, pollinators frequently probe more flowers in sequence on large displays, potentially increasing self-pollination and reducing pollen export per flower. To better understand how floral display size influences male and female fitness, we manipulated display phenotypes and then used paternity analysis to quantify siring success and selfing rates. To facilitate unambiguous assignment of paternity, we established four replicate (cloned) arrays of Mimulus ringens, each consisting of genets with unique combinations of homozygous marker genotypes. In each array, we trimmed displays to two, four, eight or 16 flowers. When fruits ripened, we counted the number of seeds per fruit and assigned paternity to 1935 progeny. Siring success per flower declined sharply with increasing display size, while female success per flower did not vary with display. The rate of self-fertilization increased for large floral displays, but siring losses due to geitonogamous pollen discounting were much greater than siring gains through increased self-fertilization. As display size increased, each additional seed sired through geitonogamous self-pollination was associated with a loss of 9·7 seeds sired through outcrossing. Although total fitness increased with floral display size, the marginal return on each additional flower declined steadily as display size increased. Therefore, a plant could maximize fitness by producing small displays over a long flowering period, rather than large displays over a brief flowering period.

  14. Interspecific hybridization between greater kudu and nyala. (United States)

    Dalton, Desiré L; Tordiffe, Adrian; Luther, Ilse; Duran, Assumpta; van Wyk, Anna M; Brettschneider, Helene; Oosthuizen, Almero; Modiba, Catherine; Kotzé, Antoinette


    Hybridization of wildlife species, even in the absence of introgression, is of concern due to wasted reproductive effort and a reduction in productivity. In this study we detail an accidental mating between a female nyala (Tragelaphus angasii) and a male greater kudu (T. strepsiceros). The hybrid was phenotypically nyala and was identified as such based on mitochondrial DNA. Further genetic analysis based on nine microsatellite markers, chromosome number and chromosome morphology however, confirmed its status as an F1 hybrid. Results obtained from a reproductive potential assessment indicated that this animal does not have the potential to breed successfully and can be considered as sterile.

  15. A helmet mounted display to adapt the telerobotic environment to human vision (United States)

    Tharp, Gregory; Liu, Andrew; Yamashita, Hitomi; Stark, Lawrence


    A Helmet Mounted Display system has been developed. It provides the capability to display stereo images with the viewpoint tied to subjects' head orientation. The type of display might be useful in a telerobotic environment provided the correct operating parameters are known. The effects of update frequency were tested using a 3D tracking task. The effects of blur were tested using both tracking and pick-and-place tasks. For both, researchers found that operator performance can be degraded if the correct parameters are not used. Researchers are also using the display to explore the use of head movements as part of gaze as subjects search their visual field for target objects.

  16. Electromyographic and neuromuscular variables in unstable postpolio subjects, stable postpolio subjects, and control subjects. (United States)

    Rodriquez, A A; Agre, J C; Franke, T M


    To compare strength and endurance variables obtained in the quadriceps muscles of postpolio and control subjects over a 7-year interval with macro and single fiber electromyography (EMG) variables. A controlled inception cohort study. Neuromuscular research laboratory of a university hospital. A cohort of 23 postpolio and 14 control subjects. All postpolio subjects had a history, physical examination, and EMG consistent with previous poliomyelitis, and had greater than antigravity strength in the quadriceps muscle tested. Unstable postpolio subjects acknowledged new quadriceps weakness over the 7-year period of the study (n = 11), and stable postpolio subjects denied new weakness of the quadriceps over the same period (n = 12). All subjects had tests of neuromuscular function of the quadriceps muscles at the onset of this study and yearly over a 7-year period. EMG variables were determined on a separate day after the seventh year of neuromuscular measurements. Neuromuscular variables measured were isometric knee extension peak torque, isometric endurance (time to inability to maintain knee extensor contraction at 40% of maximal torque), tension time index (TTI) (product of isometric endurance time and 40% of maximal torque), and recovery of torque at 10 minutes after the endurance test. EMG variables were macro EMG and single fiber EMG (jitter, fiber density, and percent blocking). Unstable postpolio subjects did not lose strength more rapidly than stable postpolio subjects or control subjects. Unstable postpolio subjects were significantly weaker, had decreased TTI, larger macro EMG amplitude, greater jitter, blocking, and fiber density in comparison with stable postpolio subjects (all p postpolio group (p .05) with neuromuscular or EMG variables in control, stable, or unstable postpolio subjects.

  17. Plastic Substrates for Flexible Displays (United States)

    Ito, Hisashi; Oka, Wataru; Goto, Hideki; Umeda, Hideo


    New flexible fibrous glass-reinforced plastic (FRP) substrates for flat panel displays were developed. Optimizing the composition of the FRP by adjusting the difference in refractive index between a matrix resin and a glass fiber enabled the coexistence of a high transparency and a low coefficient of thermal expansion (CTE). An excellent smooth surface morphology was confirmed by the formulation of a coating resin. The stability of moisture impermeability depended on the surface smoothness and adhesion between a barrier layer and the coating layer. The moisture permeation rates of barrier substrates were below detection limits (<0.01 g m-2 day-1) on standard measurement equipment.

  18. Is Piaget's epistemic subject dead? (United States)

    Lawson, Anton E.

    Niaz (1990) presents arguments in favor of the retention of Piaget's epistemic subject as a theoretical construct to guide research and practice in science education and psychology. The intent of this article is to point out the weaknesses of those arguments and to suggest that the weight of evidence argues against the existence of the logical thinker postulated by Piaget. Therefore, contrary to Niaz's conclusion that the acceptance of Piaget's epistemic subject will facilitate the development of cognitive theories with greater explanatory power, the conclusion is reached that Piaget's epistemic subject is dead and that continued acceptance of this aspect of Piagetian theory would be counterproductive.

  19. Perceptual dimensions for a dynamic tactile display (United States)

    Pappas, Thrasyvoulos N.; Tartter, Vivien C.; Seward, Andrew G.; Genzer, Boris; Gourgey, Karen; Kretzschmar, Ilona


    We propose a new approach for converting graphical and pictorial information into tactile patterns that can be displayed in a static or dynamic tactile device. The key components of the proposed approach are (1) an algorithm that segments a scene into perceptually uniform segments; (2) a procedure for generating perceptually distinct tactile patterns; and (3) a mapping of the visual textures of the segments into tactile textures that convey similar concepts. We used existing digital halftoning and other techniques to generate a wide variety of tactile textures. We then conducted formal and informal subjective tests with sighted (but visually blocked) and visually-impaired subjects to determine the ability of human tactile perception to perceive differences among them. In addition to generating perceptually distinguishable tactile patterns, our goal is to identify significant dimensions of tactile texture perception, which will make it possible to map different visual attributes into independent tactile attributes. Our experimental results indicate that it is poosible to generate a number of perceptually distinguishable tactile patterns, and that different dimensions of tactile texture perception can indeed be identified.

  20. Interruption and Pausing of Public Display Games

    DEFF Research Database (Denmark)

    Feuchtner, Tiare; Walter, Robert; Müller, Jörg


    We present a quantitative and qualitative analysis of interruptions of interaction with a public display game, and explore the use of a manual pause mode in this scenario. In previous public display installations we observed users frequently interrupting their interaction. To explore ways...... that interactions with public displays are considerably intermissive, and that users mostly interrupt interaction to socialize and mainly approach public displays in groups. We conclude that, as a typical characteristic of public display interaction, interruptions deserve consideration. However, manual pause modes...... are not well suited for games on public displays. Instead, interruptions should be implicitly supported by the application design....

  1. Home readings of blood pressure in assessment of hypertensive subjects

    DEFF Research Database (Denmark)

    Nielsen, P.E.; Myschetzky, P; Andersen, A R


    Out-patient clinic blood pressure (OPC-BP) was compared to home blood pressure (Home-BP) measured three times daily during a two week period in 122 consecutively referred hypertensive subjects. A semi-automatic device (TM-101) including a microphone for detection of Korotkoff-sounds, self......-deflation of cuff pressure and digital display of blood pressure was used. Mean difference between OPC-BP and Home-BP was systolic +13 mm Hg (range -21 - +100 mg Hg) and diastolic +5 mm Hg (range -27 - +36 mm Hg). Although a significant correlation could be demonstrated between Home-BP and OPC-BP, the inter......-individual scatter was pronounced and unpredictable from the hypertensive organ damages. It is argued, that home readings should be used to greater extent in the evaluation of patients with hypertension....

  2. Minimalism context-aware displays. (United States)

    Cai, Yang


    Despite the rapid development of cyber technologies, today we still have very limited attention and communication bandwidth to process the increasing information flow. The goal of the study is to develop a context-aware filter to match the information load with particular needs and capacities. The functions include bandwidth-resolution trade-off and user context modeling. From the empirical lab studies, it is found that the resolution of images can be reduced in order of magnitude if the viewer knows that he/she is looking for particular features. The adaptive display queue is optimized with real-time operational conditions and user's inquiry history. Instead of measuring operator's behavior directly, ubiquitous computing models are developed to anticipate user's behavior from the operational environment data. A case study of the video stream monitoring for transit security is discussed in the paper. In addition, the author addresses the future direction of coherent human-machine vision systems.

  3. Simplified Night Sky Display System (United States)

    Castellano, Timothy P.


    A document describes a simple night sky display system that is portable, lightweight, and includes, at most, four components in its simplest configuration. The total volume of this system is no more than 10(sup 6) cm(sup 3) in a disassembled state, and weighs no more than 20 kilograms. The four basic components are a computer, a projector, a spherical light-reflecting first surface and mount, and a spherical second surface for display. The computer has temporary or permanent memory that contains at least one signal representing one or more images of a portion of the sky when viewed from an arbitrary position, and at a selected time. The first surface reflector is spherical and receives and reflects the image from the projector onto the second surface, which is shaped like a hemisphere. This system may be used to simulate selected portions of the night sky, preserving the appearance and kinesthetic sense of the celestial sphere surrounding the Earth or any other point in space. These points will then show motions of planets, stars, galaxies, nebulae, and comets that are visible from that position. The images may be motionless, or move with the passage of time. The array of images presented, and vantage points in space, are limited only by the computer software that is available, or can be developed. An optional approach is to have the screen (second surface) self-inflate by means of gas within the enclosed volume, and then self-regulate that gas in order to support itself without any other mechanical support.

  4. Greater Green River Basin Production Improvement Project

    Energy Technology Data Exchange (ETDEWEB)

    DeJarnett, B.B.; Lim, F.H.; Calogero, D.


    The Greater Green River Basin (GGRB) of Wyoming has produced abundant oil and gas out of multiple reservoirs for over 60 years, and large quantities of gas remain untapped in tight gas sandstone reservoirs. Even though GGRB production has been established in formations from the Paleozoic to the Tertiary, recent activity has focused on several Cretaceous reservoirs. Two of these formations, the Ahnond and the Frontier Formations, have been classified as tight sands and are prolific producers in the GGRB. The formations typically naturally fractured and have been exploited using conventional well technology. In most cases, hydraulic fracture treatments must be performed when completing these wells to to increase gas production rates to economic levels. The objectives of the GGRB production improvement project were to apply the concept of horizontal and directional drilling to the Second Frontier Formation on the western flank of the Rock Springs Uplift and to compare production improvements by drilling, completing, and testing vertical, horizontal and directionally-drilled wellbores at a common site.

  5. Triatoma infestans in Greater Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    P Gajate


    Full Text Available The Health Administration Agencies of many municipalities in Greater Buenos Aires (GBA receive frequent reports on triatomines in houses. The aim of this work was to identify and describe the dispersal foci of Triatoma infestans in an urban neighborhood of GBA, and contribute to the knowledge of the epidemiological situation in the region. In June 1998, potentially infested places were entomologically evaluated. T. infestans was only detected in a hen building for egg production, which housed approximately 6,000 birds. A total of 2,930 insects were collected. Density was about 9 triatomines/m². The proportions of fifth instar nymphs and adults were significantly higher than those of the other stages (p<0.001. The number of triatomines collected largely exceeded the highest domestic infestation found in one house from rural endemic areas of Argentina. Though triatomines were negative for Trypanosoma cruzi, they could acquire the parasite by coming in contact with infected people living in GBA. Besides, the numerous and widely distributed places housing hens and chickens, would favor the settlement of the vector. Together, both facts may constitute a risk of parasitic vectorial transmission. It is recommended to intensify systematic activities of vector search and case detection in GBA.

  6. Triatoma infestans in Greater Buenos Aires, Argentina. (United States)

    Gajate, P; Pietrokovsky, S; Abramo Orrego, L; Pérez, O; Monte, A; Belmonte, J; Wisnivesky-Colli, C


    The Health Administration Agencies of many municipalities in Greater Buenos Aires (GBA) receive frequent reports on triatomines in houses. The aim of this work was to identify and describe the dispersal foci of Triatoma infestans in an urban neighborhood of GBA, and contribute to the knowledge of the epidemiological situation in the region. In June 1998, potentially infested places were entomologically evaluated. T. infestans was only detected in a hen building for egg production, which housed approximately 6,000 birds. A total of 2,930 insects were collected. Density was about 9 triatomines/m(2). The proportions of fifth instar nymphs and adults were significantly higher than those of the other stages (pparasite by coming in contact with infected people living in GBA. Besides, the numerous and widely distributed places housing hens and chickens, would favor the settlement of the vector. Together, both facts may constitute a risk of parasitic vectorial transmission. It is recommended to intensify systematic activities of vector search and case detection in GBA.

  7. Subjective memory complaints and personality traits in normal elderly subjects. (United States)

    Hänninen, T; Reinikainen, K J; Helkala, E L; Koivisto, K; Mykkänen, L; Laakso, M; Pyörälä, K; Riekkinen, P J


    To evaluate the relationship between objectively measured memory functions and subjective complaints of memory disturbance and whether subjective complaints are affected by some personality traits or affective states. Cross-sectional two-group comparison. The city of Kuopio in Eastern Finland, considered representative of the urban elderly population of Finland. Originally 403 subjects aged 67-78 years from the random sample and then two matched study groups initially including eighteen subjects but only ten in the final analysis. Screening and follow-up examinations of subjects with and without subjective memory complaints: (1) Memory functions: Benton's visual retention test and the paired-associated learning subtest of Wechsler Memory Scale. (2) Memory complaints: Memory Complaint Questionnaire. (3) Personality traits and affective state: Two subscales from Minnesota Multiphasic Personality Inventory and Geriatric Depression Scale. Complaints of memory loss did not correlate with the actual memory performance in the tests. However, those subjects who most emphatically complained of memory disturbance had greater tendencies toward somatic complaining, higher feelings of anxiety about their physical health, and more negative feelings of their own competence and capabilities than those who did not complain of memory deterioration associated with aging. The study suggests that subjective feelings of memory impairment are more closely associated with personality traits than with actual memory performance in normal elderly people.

  8. Holographic Waveguided See-Through Display Project (United States)

    National Aeronautics and Space Administration — To address the NASA need for lightweight, space suit-mounted displays, Luminit proposes a novel Holographic Waveguided See-Through Display. Our proposed Holographic...

  9. Projection/Reflection Heads-up Display (United States)

    National Aeronautics and Space Administration — To address the NASA need for an EVA information display device, Physical Optics Corporation (POC) proposes to develop a new Projection/Reflection Heads-up Display...

  10. OZ: An Innovative Primary Flight Display Project (United States)

    National Aeronautics and Space Administration — The proposed SBIR project will develop OZ, an innovative primary flight display for aircraft. The OZ display, designed from "first principles" of vision science,...

  11. X-Windows Widget for Image Display (United States)

    Deen, Robert G.


    XvicImage is a high-performance XWindows (Motif-compliant) user interface widget for displaying images. It handles all aspects of low-level image display. The fully Motif-compliant image display widget handles the following tasks: (1) Image display, including dithering as needed (2) Zoom (3) Pan (4) Stretch (contrast enhancement, via lookup table) (5) Display of single-band or color data (6) Display of non-byte data (ints, floats) (7) Pseudocolor display (8) Full overlay support (drawing graphics on image) (9) Mouse-based panning (10) Cursor handling, shaping, and planting (disconnecting cursor from mouse) (11) Support for all user interaction events (passed to application) (12) Background loading and display of images (doesn't freeze the GUI) (13) Tiling of images.

  12. National Weather Service: Watch, Warning, Advisory Display (United States)

    ... Contact Us SPC Feedback NWS Watch, Warning, Advisory Display NWS Warnings and Advisories on this map become ... below): A new browser window will open to display these text products. Convective/Tropical Weather Flooding Winter ...

  13. Cockpit data link displays - An evaluation of textual formats (United States)

    Mcgann, Alison; Lozito, Sandra; Corker, Kevin


    Data link technologies are being investigated for air/ground information transfer for commercial aircraft operation. This study was designed to measure which of four alpha-numeric display formats for display of data link information would lead to the quickest and most accurate memory retrieval in a part-task simulation environment. Pilots viewed a clearance for 10-15 seconds and were subsequently queried about the content of that clearance. Speed and accuracy of responses were measured across three retention tasks. The three retention tasks included free recall of a particular clearance. recognition of a previous clearance, and the comparison of element values between a previously displayed and current clearance. Each format was tested with and without a distraction task. Subjective ratings of each format were also collected. The analyses revealed no significant differences for reaction time or accuracy among the four formats. Explanations for these results as well as alternative methodologies are discussed.

  14. Tactile display on the remaining hand for unilateral hand amputees

    Directory of Open Access Journals (Sweden)

    Li Tao


    Full Text Available Human rely profoundly on tactile feedback from fingertips to interact with the environment, whereas most hand prostheses used in clinics provide no tactile feedback. In this study we demonstrate the feasibility to use a tactile display glove that can be worn by a unilateral hand amputee on the remaining healthy hand to display tactile feedback from a hand prosthesis. The main benefit is that users could easily distinguish the feedback for each finger, even without training. The claimed advantage is supported by preliminary tests with healthy subjects. This approach may lead to the development of effective and affordable tactile display devices that provide tactile feedback for individual fingertip of hand prostheses.

  15. Psychological Implications for Submarine Display Design (United States)


    This paper addresses a number of psychological issues pertaining to display design . We review the literature comparing 3-D and 2-D displays and...perceptual, cognitive and ecological factors that are relevant to display design for submarine environments. The Generative Transformational visual perception is outlined and the relevance of transformational theory to display design is discussed. The paper also discusses a number of

  16. A Comprehensive Process for Display Systems Development. (United States)

    Simcox, William A.

    A comprehensive development process for display design, focusing on computer-generated cathode ray tube (CRT) displays is presented. A framework is created for breaking the display into its component parts, used to guide the design process. The objective is to design or select the most cost effective graphics solution (hardware and software) to…

  17. How Visual Displays Affect Cognitive Processing (United States)

    McCrudden, Matthew T.; Rapp, David N.


    We regularly consult and construct visual displays that are intended to communicate important information. The power of these displays and the instructional messages we attempt to comprehend when using them emerge from the information included in the display and by their spatial arrangement. In this article, we identify common types of visual…

  18. Directional light scanning 3-D display (United States)

    Aoki, Yoji; Horimai, Hideyoshi; Lim, Pang Boey; Watanabe, Kenjiro; Inoue, Mitsuteru


    This paper presents a new Three-Dimensional display method, so called Directional Light Scanning 3D display. By using holographic screen as a beam scanner and high frame rate Spatial Light Modulator (SLM), this method requires only one SLM but can display high resolution 3D images, solving the usual problem of lack of resolution.

  19. Visual Merchandising through Display: Advertising Services Occupations. (United States)

    Maurer, Nelson S.

    The increasing use of displays by businessmen is creating a demand for display workers. This demand may be met by preparing high school students to enter the field of display. Additional workers might be recruited by offering adult training programs for individuals working within the stores. For this purpose a curriculum guide has been developed…

  20. 27 CFR 6.55 - Display service. (United States)


    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Display service. 6.55... OF THE TREASURY LIQUORS âTIED-HOUSEâ Unlawful Inducements Paying for Advertising, Display Or Distribution Service § 6.55 Display service. Industry member reimbursements to retailers for setting up product...

  1. 9 CFR 392.6 - Public display. (United States)


    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Public display. 392.6 Section 392.6... INSPECTION SERVICE ADMINISTRATIVE PROVISIONS PETITIONS FOR RULEMAKING § 392.6 Public display. (a) All... information that should not be put on public display. If the petitioner fails to submit the certification...

  2. 14 CFR 21.161 - Display. (United States)


    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Display. 21.161 Section 21.161 Aeronautics... PROCEDURES FOR PRODUCTS AND PARTS Production Certificates § 21.161 Display. The holder of a production certificate shall display it prominently in the main office of the factory in which the product concerned is...

  3. Hailstones across the Greater Sydney Metropolitan Area (United States)

    Rasuly, A. A.; Cheung, K. K. W.; McBurney, B.


    This study addresses the recent climatology of hail occurrence in the Greater Metropolitan Severe Thunderstorm Warning Area (GMSTWA) of New South Wales, Australia, which is a sprawling suburban area, with a population of nearly 4.7 million and one of Australia's largest metropolis. The main objective is to highlight the recent temporal-spatial fluctuations of hailstone frequencies and magnitudes for each of recognized and vastly inhabited Local Government Areas (LGAs). The relevant hail event data from 1989 to 2013 were initially derived from the severe storm archive of Australian Bureau of Meteorology. A climatologically oriented GIS technique was applied in the examining and mapping procedure of all hail events and hail days reported throughout the study area. By applying a specific criterion, all severe hails (defined as 2 cm or more in diameter) were cautiously selected and then imported into the ArcGIS software for relevant analysis. Appropriate data layers were stored in a unique database to allow logical integration of the data directly into some geoprocessing functions, mainly for querying, analyzing and mapping purposes in a model-builder setting. The database includes 357 hailstones with sizes 2-11 cm and occurred in 169 hail days across the region during the past 25 years. The models have established that hailstones are neither temporally nor spatially uniform in magnitude throughout the study area. Temporal analysis indicated that most of hail events occurred predominately in the afternoons with peak time of 1-5 p.m. EST. They were particularly common in spring and summer, and reached maximum frequency in November and December. There was an average of 14.3 events each year, but a significant decreasing trend in terms of hail frequency and associated magnitude in the recent years has been identified. In turn, spatial models also established three main distribution patterns over the study area, which include the Sydney Metropolitan, coastal and pronounced

  4. Stereoscopic imaging and display for a 3-D mobile phone. (United States)

    Park, Min-Chul; Park, Sang Ju; Son, Jung-Young


    There is growing interest in imaging and display of stereoscopic images on a mobile phone. Mobile phone users can capture a stereo image pair by taking two pictures, one after another, with a single camera at the left and right eye positions. Such a handheld setup makes it difficult to take the stereo image pair at the exact positions. In this respect, although either radial (toed-in) or parallel arrangements can be used, the former is better suited for a short distance subject, such as a self-portrait, because a single reference point can be placed at the center of two pictures. We describe the optimum distance of camera shifting in the horizontal direction, allowable differences of the radial arrangement for taking stereo images at a short distance, and the alignment procedure of viewing zone forming optics on the display panel through experiments and human subjective evaluation.

  5. CERN students display their work

    CERN Multimedia

    Anaïs Schaeffer


    The first poster session by students working on the LHC experiments, organised by the LPCC, was a great success. Showcasing the talents of over a hundred young physicists from all over the world, it was an opportunity for everyone at CERN to check out the wide range of research work being done by the new generation of physicists at CERN.   At 5.30 p.m. on Wednesday 23 March, the first poster session by CERN students took place in Restaurant No.1, where no fewer than 87 posters went on public display. The students were split into 8 groups according to their research field* and all were on hand to answer the questions of an inquisitive audience. TH Department's Michelangelo Mangano, who is head of the LHC Physics Centre at CERN (LPCC) and is responsible for the initiative, confirms that nothing was left to chance, even the choice of date: "We wanted to make the most of the general enthusiasm around the winter conferences and the meeting of the LHC Experiments Committee to present the stud...

  6. Continuously informing vibrotactile displays in support of attention management and multitasking in anesthesiology. (United States)

    Ferris, Thomas K; Sarter, Nadine


    A novel vibrotactile display type was investigated to determine the potential benefits for supporting the attention and task management of anesthesiologists. Recent research has shown physiological monitoring and multitasking performance can benefit from displaying patient data via alarm-like tactile notifications and via continuously informing auditory displays (e.g., sonifications). The current study investigated a novel combination of these two approaches: continuously informing tactile displays. A tactile alarm and two continuously informing tactile display designs were evaluated in an anesthesia induction simulation with anesthesiologists as participants. Several performance measures were collected for two tasks: physiological monitoring and anesthesia induction. A multitask performance score equivalently weighted components from each task, normalized across experimental scenarios. Subjective rankings of the displays were also collected. Compared to the baseline (visual and auditory only) display configuration, each tactile display significantly improved performance in several objective measures, including multitask performance score. The continuously informing display that encoded the severity of patient health into the salience of its signals supported significantly better performance than the other two tactile displays. Contrasting the objective results, participants subjectively ranked the tactile alarm display highest. Continuously informing tactile displays with alarm-like properties (e.g., salience mapping) can better support anesthesiologists' physiological monitoring and multitasking performance under the high task demands of anesthesia induction. Adaptive display mechanisms may improve user acceptance. This study can inform display design to support multitasking performance of anesthesiologists in the clinical setting and other supervisory control operators in work domains characterized by high demands for visual and auditory resources.

  7. Extension of a human visual system model for display simulation (United States)

    Marchessoux, Cédric; Rombaut, Alexis; Kimpe, Tom; Vermeulen, Brecht; Demeester, Piet


    In the context of medical display validation, a simulation chain has been developed to facilitate display design and image quality validation. One important part is the human visual observer model to quantify the quality perception of the simulated images. Since several years, multiple research groups are modeling the various aspects of human perception to integrate them in a complete Human Visual System (HVS) and developing visible image difference metrics. In our framework, the JNDmetrix is used. It reflects the human subjective assessment of images or video fidelity. Nevertheless, the system is limited and not suitable for our accurate simulations. There is a limitation to RGB 8 bits integer images and the model takes into account display parameters like gamma, black offset, ambient light... It needs to be extended. The solutions proposed to extend the HVS model are: precision enhancement to overcome the 8 bit limit, color space conversion between XYZ and RGB and adaptation to the display parameters. The preprocessing does not introduce any kind of perceived distortion caused for example by precision enhancement. With this extension the model is used in a daily basis in the display simulation chain.

  8. Preverbal subjects in null subject languages are not necessarily dislocated

    Directory of Open Access Journals (Sweden)

    João Costa


    Full Text Available In recent work on null subject languages it has been claimed that preverbal subjects are always (clitic-left dislocated. In this paper, we argue against this claim, on the grounds of empirical evidence from European Portuguese concerning agreement facts, asymmetries between preverbal subjects and clitic-left dislocated XPs with respect to minimality effects, the existence of languages with a mixed system (null expletive subjects and full referential ones, language acquisition data, the behavior of negative QPs and interpretation facts, and propose a non-uniform analysis of preverbal subjects and clitic-left dislocated XPs that derives their topic interpretation from a predication rule stated configurationally (section 2. Our account of the SVO and VSO orders displayed in European Portuguese relies on a specific formulation of the EPP parameter, on the locality constraint Attract Closest X and on the independently motivated claim that V-movement targets T in European Portuguese (section 3. Under our analysis, the computational system generates equally economical SVO and VSO derivations and discourse considerations, at the appropriate interface, rule out the unfelicitous ones.

  9. Preferred viewing distance and screen angle of electronic paper displays. (United States)

    Shieh, Kong-King; Lee, Der-Song


    This study explored the viewing distance and screen angle for electronic paper (E-Paper) displays under various light sources, ambient illuminations, and character sizes. Data analysis showed that the mean viewing distance and screen angle were 495 mm and 123.7 degrees. The mean viewing distances for Kolin Chlorestic Liquid Crystal display was 500 mm, significantly longer than Sony electronic ink display, 491 mm. Screen angle for Kolin was 127.4 degrees, significantly greater than that of Sony, 120.0 degrees. Various light sources revealed no significant effect on viewing distances; nevertheless, they showed significant effect on screen angles. The screen angle for sunlight lamp (D65) was similar to that of fluorescent lamp (TL84), but greater than that of tungsten lamp (F). Ambient illumination and E-paper type had significant effects on viewing distance and screen angle. The higher the ambient illumination was, the longer the viewing distance and the lesser the screen angle. Character size had significant effect on viewing distances: the larger the character size, the longer the viewing distance. The results of this study indicated that the viewing distance for E-Paper was similar to that of visual display terminal (VDT) at around 500 mm, but greater than normal paper at about 360 mm. The mean screen angle was around 123.7 degrees, which in terms of viewing angle is 29.5 degrees below horizontal eye level. This result is similar to the general suggested viewing angle between 20 degrees and 50 degrees below the horizontal line of sight.

  10. Development and Evaluation of Sterographic Display for Lung Cancer Screening (United States)


    lung CT images. Stereopsis is the mechanism used in human vision system to perceive objects in our three dimensional space. The 3D display using...ray attenuation appearing brighter. In stereopsis , contrast is important for depth perception [7-8], and subjective evaluations from our studies... stereopsis , and it is desirable to include these cues, to the extent they are not in conflict with the goal of optimizing radiographic interpretation

  11. Measuring visual discomfort associated with 3D displays


    M. Lambooij; Fortuin, M.; IJsselsteijn, W.A.; Heyndrickx, I.


    Some people report visual discomfort when watching 3D displays. For both the objective measurement of visual fatigue and the subjective measurement of visual discomfort, we would like to arrive at general indicators that are easy to apply in perception experiments. Previous research yielded contradictory results concerning such indicators. We hypothesize two potential causes for this: 1) not all clinical tests are equally appropriate to evaluate the effect of stereoscopic viewing on visual fa...

  12. Acoustic communication in the Greater Sage-Grouse (Centrocercus urophasianus) an examination into vocal sacs, sound propagation, and signal directionality (United States)

    Dantzker, Marc Steven

    The thesis is an inquiry into the acoustic communication of a very unusual avian species, the Greater Sage-Grouse, Centrocercus urophasianus. One of the most outstanding features of this animal's dynamic mating display is its use of paired air sacs that emerge explosively from an esophageal pouch. My first line of inquiry into this system is a review of the form and function of similar vocal apparatuses, collectively called vocal sacs, in birds. Next, with a combination of mathematical models and field measurements, My collaborator and I investigate the acoustic environment where the Greater Sage-Grouse display. The complexities of this acoustic environment are relevant both to the birds and to the subsequent examinations of the display's properties. Finally, my collaborators and I examine a cryptic component of the acoustic display --- directionality --- which we measured simultaneously from multiple locations around free moving grouse on their mating grounds.

  13. The effect of display movement angle, indicator type and display location on control/display stereotype strength. (United States)

    Hoffmann, Errol R; Chan, Alan H S


    Much research on stereotype strength relating display and control movements for displays moving in the vertical or horizontal directions has been reported. Here we report effects of display movement angle, where the display moves at angles (relative to the vertical) of between 0° and 180°. The experiment used six different controls, four display locations relative to the operator and three types of indicator. Indicator types were included because of the strong effects of the 'scale-side principle' that are variable with display angle. A directional indicator had higher stereotype strength than a neutral indicator, and showed an apparent reversal in control/display stereotype direction beyond an angle of 90°. However, with a neutral indicator this control reversal was not present. Practitioner Summary: The effects of display moving at angles other than the four cardinal directions, types of control, location of display and types of indicator are investigated. Indicator types (directional and neutral) have an effect on stereotype strength and may cause an apparent control reversal with change of display movement angle.

  14. Optical advantages in retinal scanning displays (United States)

    Urey, Hakan


    Virtual Retinal DisplayTM technology is a retinal scanning display (RSD) technology being developed at Microvision, Inc., for a variety of applications including microdisplays. An RSD scans a modulated light beam onto a viewer's retina to produce a perceived image. Red, green and blue light sources, such as lasers, laser diodes or LEDs combine with Microvision's proprietary miniaturized scanner designs to make the RSD very well suited for head-worn and helmet-mounted displays (HMD). This paper compares the features of RSD technology to other display technologies such as the cathode ray tubes or matrix-based displays for HMD and other wearable display applications, and notes important performance advantages due to the number of pixel- generating elements. Also discussed are some fundamental optical limitations for virtual displays used in the HMD applications.

  15. Conceptual Design of Industrial Process Displays

    DEFF Research Database (Denmark)

    Pedersen, C.R.; Lind, Morten


    Today, process displays used in industry are often designed on the basis of piping and instrumentation diagrams without any method of ensuring that the needs of the operators are fulfilled. Therefore, a method for a systematic approach to the design of process displays is needed. This paper...... design method that matches the industrial practice of modular plant design and satisfies the needs of reusability of display design solutions. The main considerations in display design in the industry are to specify the operator's activities in detail, to extract the information the operators need from...... the plant design specification and documentation, and finally to present this information. The form of the display is selected from existing standardized display elements such as trend curves, mimic diagrams, ecological interfaces, etc. Further knowledge is required to invent new display elements. That is...

  16. Usefulness of reversed display of soft-copy abdominal radiographs for urinary calculi detection

    Energy Technology Data Exchange (ETDEWEB)

    Kang, S.S.; Kim, J.K.; Ryu, J.A.; Choi, N.; Bae, S.J.; Kim, B. [Sungkyunkwan Univ. School of Medicine, Seoul (Korea, Republic of). Dept. of Radiology


    PURPOSE: To determine the usefulness of reversed display of soft-copy abdominal radiographs for urinary calculi detection. MATERIAL AND METHODS: Sixty radiographs with a single urinary calculus less than 5 mm in the long diameter (15 in the kidney; 15 in the proximal ureter; 15 in the mid-ureter, 15 in the distal ureter) and 15 radiographs without calculi were evaluated. Four readers blinded to the presence or absence of urinary calculi on each radiograph reviewed the radiographs in the conventional display, reversed display, and combination of conventional and reversed displays at 1-week intervals. All images were evaluated in random order and the presence or absence of urinary calculi was interpreted using the confidence score from 1 to 5. RESULTS: Multireader analysis for calculi in all locations showed a greater area under the receiver operating curve for combination of the two displays (0.764) than for the conventional display alone (0.655) (P=0.031). In the single-reader analysis for calculi in all locations, the third reader showed a greater area under the receiver operating curve for the reversed display (0.784) than for the conventional display (0.622) (P=0.027). Multireader analysis of the calculi in the kidney showed a greater area under the receiver operating curve for combination of the two displays (0.824) than for the conventional display alone (0.703) (P=0.043). CONCLUSION: The reversed display of soft-copy abdominal radiographs may be useful for urinary calculi detection.

  17. Visualizing approaches for displaying measures of sentiment (United States)

    Kase, Sue E.; Roy, Heather; Cassenti, Daniel N.


    The overall purpose of intelligence analysis platforms is to extract key information from multi-source data. Ultimately, these systems are meant to save intelligence analysts time and effort by offering knowledge discovery capabilities. However, intelligence analysis platforms only assist analysts to the extent they are designed with human factors in mind. Poorly designed intelligence analysis platforms can hinder the knowledge discovery process, or worse, promote the misinterpretation of analysis results. Future intelligence systems must be critical enablers for improving speed, efficiency, and effectiveness of command-level decision making. Human-centered research is needed to address the challenge of visualizing large data collections to facilitate orientation and context, enable the discovery and selection of relevant information, and provide dynamic feedback for identifying changes in the state of a targeted region or topic. From the perspective of the `Human as a Data Explorer,' this study investigates the visual presentation of intelligence information to support timely and accurate decision making. The investigation is a starting point in understanding the rich and varied set of information visualizations sponsored by the Army in recent years. A human-subjects experiment explores two visualization approaches against a control condition for displaying sentiment about a set of topics with an emphasis on the performance metrics of decision accuracy and response time. The resulting data analysis is the first in a series of experiments providing input for technology development informing future interface designs and system prototypes.

  18. Fractures of the greater trochanter: intertrochanteric extension shown by MR imaging

    Energy Technology Data Exchange (ETDEWEB)

    Craig, J.G.; Eyler, W.R.; Holsbeeck, M. van [Henry Ford Hospital, Detroit, MI (United States). Dept. of Nuclear Radiology; Moed, B.R. [Dept. of Orthopaedic Surgery, Henry Ford Hospital, Detroit, MI (United States)


    Objective. To demonstrate the MR depiction of the intertrochanteric or femoral neck extension of fractures of the greater trochanter, when standard radiographs show only a fracture of the greater trochanter.Design and patients. A retrospective review was performed of the MR and radiographic findings in 13 consecutive patients (10 men, 3 women; ages 24-86 years) with radiographic evidence of fracture of the greater trochanter who were examined with MR imaging.Results. The MR study displayed the fracture of the greater trochanter in all cases. In all but three patients, MR examinations displayed an extension of the fracture into the intertrochanteric region, and in one, also an extension into the femoral neck, although the cortex at this level was not interrupted.Conclusion. When there is radiographic evidence of an isolated fracture of the greater trochanter, MR often shows an intertrochanteric or femoral neck extension of the fracture in both young and older adults. This finding may be a factor in determining the need for surgical intervention. (orig.)

  19. A simplified procedure for antibody engineering by yeast surface display: Coupling display levels and target binding by ribosomal skipping. (United States)

    Grzeschik, Julius; Hinz, Steffen C; Könning, Doreen; Pirzer, Thomas; Becker, Stefan; Zielonka, Stefan; Kolmar, Harald


    Yeast surface display is a valuable, widely used method for protein engineering. However, current yeast display applications rely on the staining of epitope tags in order to verify full-length presentation of the protein of interest on the cell surface. We aimed at developing a modified yeast display approach that relies on ribosomal skipping, thereby enabling the translation of two proteins from one open reading frame and, in that manner, generating an intracellular fluorescence signal. This improved setup is based on a 2A sequence that is encoded between the protein to be displayed and a gene for green fluorescent protein (GFP). The intracellular GFP fluorescence signal of yeast cells correlates with full-length protein presentation and omits the need for the immunofluorescence detection of epitope tags. For method validation, shark-derived IgNAR variable domains (vNAR) were subjected to affinity maturation using the 2A-GFP system. Yeast library screening of full-length vNAR variants which were detected via GFP expression yielded the same high-affinity binder that had previously been isolated by our group using the conventional epitope tag-based display format. The presented method obviates the need for additional immunofluorescence cell staining, offering an easy and cost-friendly alternative to conventional epitope tag detections. Copyright © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  20. Miniaturized LEDs for flat-panel displays (United States)

    Radauscher, Erich J.; Meitl, Matthew; Prevatte, Carl; Bonafede, Salvatore; Rotzoll, Robert; Gomez, David; Moore, Tanya; Raymond, Brook; Cok, Ronald; Fecioru, Alin; Trindade, António Jose; Fisher, Brent; Goodwin, Scott; Hines, Paul; Melnik, George; Barnhill, Sam; Bower, Christopher A.


    Inorganic light emitting diodes (LEDs) serve as bright pixel-level emitters in displays, from indoor/outdoor video walls with pixel sizes ranging from one to thirty millimeters to micro displays with more than one thousand pixels per inch. Pixel sizes that fall between those ranges, roughly 50 to 500 microns, are some of the most commercially significant ones, including flat panel displays used in smart phones, tablets, and televisions. Flat panel displays that use inorganic LEDs as pixel level emitters (μILED displays) can offer levels of brightness, transparency, and functionality that are difficult to achieve with other flat panel technologies. Cost-effective production of μILED displays requires techniques for precisely arranging sparse arrays of extremely miniaturized devices on a panel substrate, such as transfer printing with an elastomer stamp. Here we present lab-scale demonstrations of transfer printed μILED displays and the processes used to make them. Demonstrations include passive matrix μILED displays that use conventional off-the shelf drive ASICs and active matrix μILED displays that use miniaturized pixel-level control circuits from CMOS wafers. We present a discussion of key considerations in the design and fabrication of highly miniaturized emitters for μILED displays.

  1. [Development of platform technology using molecular display]. (United States)

    Shibasaki, Seiji


    Techniques for immobilizing proteins on surface of virus or microorganisms, namely molecular display technologies, have played important roles in helping the elucidation of protein-protein interactions in cells and to develop research on drug discovery. Phage display system is well-established and sophisticated; consequently, bioactive low-molecular-weight ligands and proteins significant in pharmaceutical industry have been found. In addition to the development of novel functional proteins by phage display using results from experiments in genomics and proteomics, ribosome display or yeast display systems have been developed as complementary methods. We can select the appropriate method on the basis of the objective. Molecular display using yeast has advantages in production of desired proteins from combinatorial library by flow cytometry. Firstly, principle, development procedure, and latest research in this field are introduced. Thereafter, results of molecular display using yeast for antibodies and their related proteins are presented. Furthermore, display of receptor coupled with intracellular signal transduction -a novel type of molecular display on yeast cell surface- has been created in recent years. The role and potential of molecular display technologies employing yeast cells in drug discovery are discussed.

  2. An integrated measure of display clutter based on feature content, user knowledge and attention allocation factors. (United States)

    Pankok, Carl; Kaber, David B


    Existing measures of display clutter in the literature generally exhibit weak correlations with task performance, which limits their utility in safety-critical domains. A literature review led to formulation of an integrated display data- and user knowledge-driven measure of display clutter. A driving simulation experiment was conducted in which participants were asked to search 'high' and 'low' clutter displays for navigation information. Data-driven measures and subjective perceptions of clutter were collected along with patterns of visual attention allocation and driving performance responses during time periods in which participants searched the navigation display for information. The new integrated measure was more strongly correlated with driving performance than other, previously developed measures of clutter, particularly in the case of low-clutter displays. Integrating display data and user knowledge factors with patterns of visual attention allocation shows promise for measuring display clutter and correlation with task performance, particularly for low-clutter displays. Practitioner Summary: A novel measure of display clutter was formulated, accounting for display data content, user knowledge states and patterns of visual attention allocation. The measure was evaluated in terms of correlations with driver performance in a safety-critical driving simulation study. The measure exhibited stronger correlations with task performance than previously defined measures.

  3. A multiprimary display model combined with a spatio-temporal behavioral display model for display characterization by simulation (United States)

    Dolar, Carsten; Lebowsky, Fritz


    With the development of fast liquid crystal cells and with advent of backlight units with separate red, green and blue light emitting diodes also first commercial color sequential display emerge. Another technique in commercial application proposes implementing more than three subpixels and thus enhanced color gamut by using multiple color primaries. Also the combination of both color mixture techniques is possible. It is thus desirable to have a simulation workbench at hand that is flexible enough to adapt to the various possibilities of subpixel design and color sequences in display design to evaluate the displayed image in advance. The combination of a multiprimary display model, which can emulate a multiprimary display on a standard RGB LC display, and a spatio-temporal model, that describes LC pixel behavior to arbitrary input signals over time, provides means for simulating the perceived image of a color-sequential display behavior. This article describes the combined model and gives also simulation results that compare advanced displays to conventional vertical stripe RGB LC display.

  4. Volumetric three-dimensional display system with rasterization hardware (United States)

    Favalora, Gregg E.; Dorval, Rick K.; Hall, Deirdre M.; Giovinco, Michael; Napoli, Joshua


    An 8-color multiplanar volumetric display is being developed by Actuality Systems, Inc. It will be capable of utilizing an image volume greater than 90 million voxels, which we believe is the greatest utilizable voxel set of any volumetric display constructed to date. The display is designed to be used for molecular visualization, mechanical CAD, e-commerce, entertainment, and medical imaging. As such, it contains a new graphics processing architecture, novel high-performance line- drawing algorithms, and an API similar to a current standard. Three-dimensional imagery is created by projecting a series of 2-D bitmaps ('image slices') onto a diffuse screen that rotates at 600 rpm. Persistence of vision fuses the slices into a volume-filling 3-D image. A modified three-panel Texas Instruments projector provides slices at approximately 4 kHz, resulting in 8-color 3-D imagery comprised of roughly 200 radially-disposed slices which are updated at 20 Hz. Each slice has a resolution of 768 by 768 pixels, subtending 10 inches. An unusual off-axis projection scheme incorporating tilted rotating optics is used to maintain good focus across the projection screen. The display electronics includes a custom rasterization architecture which converts the user's 3- D geometry data into image slices, as well as 6 Gbits of DDR SDRAM graphics memory.

  5. Prediction of HDR quality by combining perceptually transformed display measurements with machine learning (United States)

    Choudhury, Anustup; Farrell, Suzanne; Atkins, Robin; Daly, Scott


    We present an approach to predict overall HDR display quality as a function of key HDR display parameters. We first performed subjective experiments on a high quality HDR display that explored five key HDR display parameters: maximum luminance, minimum luminance, color gamut, bit-depth and local contrast. Subjects rated overall quality for different combinations of these display parameters. We explored two models | a physical model solely based on physically measured display characteristics and a perceptual model that transforms physical parameters using human vision system models. For the perceptual model, we use a family of metrics based on a recently published color volume model (ICT-CP), which consists of the PQ luminance non-linearity (ST2084) and LMS-based opponent color, as well as an estimate of the display point spread function. To predict overall visual quality, we apply linear regression and machine learning techniques such as Multilayer Perceptron, RBF and SVM networks. We use RMSE and Pearson/Spearman correlation coefficients to quantify performance. We found that the perceptual model is better at predicting subjective quality than the physical model and that SVM is better at prediction than linear regression. The significance and contribution of each display parameter was investigated. In addition, we found that combined parameters such as contrast do not improve prediction. Traditional perceptual models were also evaluated and we found that models based on the PQ non-linearity performed better.

  6. Auditory display as feedback for a novel eye-tracking system for sterile operating room interaction. (United States)

    Black, David; Unger, Michael; Fischer, Nele; Kikinis, Ron; Hahn, Horst; Neumuth, Thomas; Glaser, Bernhard


    The growing number of technical systems in the operating room has increased attention on developing touchless interaction methods for sterile conditions. However, touchless interaction paradigms lack the tactile feedback found in common input devices such as mice and keyboards. We propose a novel touchless eye-tracking interaction system with auditory display as a feedback method for completing typical operating room tasks. Auditory display provides feedback concerning the selected input into the eye-tracking system as well as a confirmation of the system response. An eye-tracking system with a novel auditory display using both earcons and parameter-mapping sonification was developed to allow touchless interaction for six typical scrub nurse tasks. An evaluation with novice participants compared auditory display with visual display with respect to reaction time and a series of subjective measures. When using auditory display to substitute for the lost tactile feedback during eye-tracking interaction, participants exhibit reduced reaction time compared to using visual-only display. In addition, the auditory feedback led to lower subjective workload and higher usefulness and system acceptance ratings. Due to the absence of tactile feedback for eye-tracking and other touchless interaction methods, auditory display is shown to be a useful and necessary addition to new interaction concepts for the sterile operating room, reducing reaction times while improving subjective measures, including usefulness, user satisfaction, and cognitive workload.

  7. Initial development of a metric to describe the level of safety associated with piloting an aircraft with synthetic vision systems (SVS) displays (United States)

    Bartolone, Anthony P.; Glaab, Louis J.; Hughes, Monica F.; Parrish, Russell V.


    subjective and objective data measures were used in this preliminary research to quantify the relationship between selected components of safety that are associated with flying an approach. Four information display methods ranging from a "round dials" baseline through a fully integrated SVS package that includes terrain, pathway based guidance, and a strategic navigation display, were investigated in this high fidelity simulation experiment. In addition, a broad spectrum of pilots, representative of the GA population, were employed for testing in an attempt to enable greater application of the results and determine if "equivalent levels of safety" are achievable through the incorporation of SVS technology regardless of a pilot's flight experience.

  8. Microfluidics for electronic paper-like displays. (United States)

    Shui, Lingling; Hayes, Robert A; Jin, Mingliang; Zhang, Xiao; Bai, Pengfei; van den Berg, Albert; Zhou, Guofu


    Displays are ubiquitous in modern life, and there is a growing need to develop active, full color, video-rate reflective displays that perform well in high-light conditions. The core of display technology is to generate or manipulate light in the visible wavelength. Colored fluids or fluids with particles can be used to tune the light intensity (greyscale) or wavelength (colors) of reflective displays by different actuation methods. Microfluidic technology plays an increasing role in fluidic manipulation in microscale devices used in display areas. In this article, we will review microfluidic technologies based on different actuation methods used for display applications: pressure-driven flow, electrophoresis, electroosmosis, electrowetting, magnetic-driven flow, and cell-actuation principles.

  9. Three-dimensional Imaging, Visualization, and Display

    CERN Document Server

    Javidi, Bahram; Son, Jung-Young


    Three-Dimensional Imaging, Visualization, and Display describes recent developments, as well as the prospects and challenges facing 3D imaging, visualization, and display systems and devices. With the rapid advances in electronics, hardware, and software, 3D imaging techniques can now be implemented with commercially available components and can be used for many applications. This volume discusses the state-of-the-art in 3D display and visualization technologies, including binocular, multi-view, holographic, and image reproduction and capture techniques. It also covers 3D optical systems, 3D display instruments, 3D imaging applications, and details several attractive methods for producing 3D moving pictures. This book integrates the background material with new advances and applications in the field, and the available online supplement will include full color videos of 3D display systems. Three-Dimensional Imaging, Visualization, and Display is suitable for electrical engineers, computer scientists, optical e...

  10. Evaluating Ambient Displays in the Wild

    DEFF Research Database (Denmark)

    Messeter, Jörn; Molenaar, Daryn

    A prominent issue for evaluating ambient displays has been the conflict between the relative intrusiveness of evaluation methods and the intention to keep the display at the periphery of the user’s attention. There is a general lack of research discussing the difficulties of evaluating ambient...... displays in the wild, and in particular social aspects of use has received little attention. This paper presents a case study of an ambient light display designed for a public setting. Based on results from a non-intrusive in situ evaluation, we argue that viewing ambient displays as features of a broader...... social setting may aid our understanding of issues regarding the evaluation of ambient displays in the wild....

  11. Emergent features in visual display design for two types of failure detection tasks. (United States)

    Buttigieg, M A; Sanderson, P M


    Visual display design for dynamic systems may be helped by exploiting emergent features that allow subjects to easily distinguish different states of the system. Three different types of displays were compared--two object displays and one separated display--each in a version that had a salient emergent feature that distinguished normal and failed states and in a version that did not have such an emergent feature. Subjects monitored for global and local failures simultaneously, which presented demands similar to integrated and separated tasks, respectively. Displays with salient emergent features supported superior global failure detection and may also have helped local failure detection. An object display with a salient emergent feature supported both types of failures better than or at least as well as the other displays. This advantage was attributed to the fact that the display had a salient emergent feature rather than to the fact that it was an object display. This research shows that emergent features can be effectively exploited to support tasks involving both integration of information and attention to individual data sources.

  12. Optimizing direct response in Internet display advertising


    Aksakallı, Vural


    Internet display advertising has grown into a multi-billion dollar a year global industry and direct response campaigns account for about three-quarters of all Internet display advertising. In such campaigns, advertisers reach out to a target audience via some form of a visual advertisement (hereinafter also called “ad”) to maximize short-term sales revenue. In this study, we formulate an advertiser’s revenue maximization problem in direct response Internet display advertisement campaigns as ...

  13. Online Display Advertising Causal Attribution and Evaluation




    The allocation of a given budget to online display advertising as a marketing channel has motivated the development of statistical methods to measure its effectiveness. Recent studies show that display advertising often triggers online users to search for more information on products. Eventually, many of these users convert at the advertiser’s website. A key challenge is to measure the effectiveness of display advertising when users are exposed to multiple unknown advertising channels.We deve...

  14. Greater trochanter pain syndrome: A descriptive MR imaging study

    Energy Technology Data Exchange (ETDEWEB)

    Klontzas, Michail E., E-mail:; Karantanas, Apostolos H., E-mail:


    Objective: Greater trochanter pain syndrome (GTPS) is a diverse clinical entity caused by a variety of underlying conditions. We sought to explore the impact of (1) hip morphology, namely the center-edge angle (CEa) and femoral neck-shaft (NSa) angle, (2) hip abductor tendon degeneration, (3) the dimensions of peritrochanteric edema and (4) bursitis, on the presence of GTPS, using MR imaging. Materials and methods: The presence of pain was prospectively assessed blindly by the senior author. CEa and NSa were blindly measured in 174 hip MR examinations, after completion of the clinical evaluation by another evaluator. The existence and dimensions of T2 hyperintensity of the peritrochanteric soft tissues, the existence and dimensions of bursae, as well as degeneration and tearing of gluteus tendons were also recorded. Results: Out of 174 examinations, 91 displayed peritrochanteric edema (group A) and 34 bursitis, all with peritrochanteric edema (group B). A number of 78 patients from both A and B groups, showed gluteus medius tendon degeneration and one tendon tear. CEa of groups A and B were 6° higher than those of normals (group C, P = 0.0038). The mean age of normals was 16.6 years less than in group A and 19.8 years less than in group B (P < 0.0001). Bursitis was associated with pain with a negative predictive value of 97% (P = 0.0003). Conclusion: Acetabular morphology is associated with GTPS and the absence of bursitis was proved to be clinically relevant. Peritrochanteric edema alone was not associated with local pain.

  15. Display of nuclear medicine imaging studies

    CERN Document Server

    Singh, B; Samuel, A M


    Nuclear medicine imaging studies involve evaluation of a large amount of image data. Digital signal processing techniques have introduced processing algorithms that increase the information content of the display. Nuclear medicine imaging studies require interactive selection of suitable form of display and pre-display processing. Static imaging study requires pre-display processing to detect focal defects. Point operations (histogram modification) along with zoom and capability to display more than one image in one screen is essential. This album mode of display is also applicable to dynamic, MUGA and SPECT data. Isometric display or 3-D graph of the image data is helpful in some cases e.g. point spread function, flood field data. Cine display is used on a sequence of images e.g. dynamic, MUGA and SPECT imaging studies -to assess the spatial movement of tracer with time. Following methods are used at the investigator's discretion for inspection of the 3-D object. 1) Display of orthogonal projections, 2) Disp...

  16. Microencapsulated Electrophoretic Films for Electronic Paper Displays (United States)

    Amundson, Karl


    Despite the dominance of liquid crystal displays, they do not perform some functions very well. While backlit liquid crystal displays can offer excellent color performance, they wash out in bright lighting and suffer from high power consumption. Reflective liquid crystal displays have limited brightness, making these devices challenging to read for long periods of time. Flexible liquid crystal displays are difficult to manufacture and keep stable. All of these attributes (long battery lifetime, bright reflective appearance, compatibility with flexible substrates) are traits that would be found in an ideal electronic paper display - an updateable substitute for paper that could be employed in electronic books, newspapers, and other applications. I will discuss technologies that are being developed for electronic-paper-like displays, and especially on particle-based technologies. A microencapsulated electrophoretic display technology is being developed at the E Ink corporation. This display film offers offer high brightness and an ink-on-paper appearance, compatibility with flexible substrates, and image stability that can lead to very low power consumption. I will present some of the physical and chemical challenges associated with making display films with high performance.

  17. History Of Holographic Display In Japan (United States)

    Iwata, Fujio


    The first exhibition of holographic display was held at Seibu Museum of Art in Tokyo in 1975 and played a role of opening of the holographic era in Japan. This exhibition and the next big exhibition of holography held at Isetan department store 3 years later in 1978 were really epoch-making facts on holographic display in Japan. Since these two exhibitions, holographic display in Japan has come to attract attention of a lot of people to the new display media, holography. At that time, mass production technology of holograms had not been fully developed yet, and the hologram was so expensive that they were found only at the big event. Some companies and universities still continued research and development to have holograms get into practical applications of display media. Few years later, people became interested in 3-D displays and sometimes many peoples took an interest in holographic display, mainly mass produced embossed type holograms applied to the field of publications, book and magazine, etc. 3-D display booms occurred in the year of Tsukuba Science Expo'85 in 1985 and embossed type hologram became much popular. History of holographic display of Japan in terms of technical development and practical use on laser reconstruction hologram, rainbow hologram, multiplex hologram and lippmann hologram will be introduced.

  18. Refreshable Braille displays using EAP actuators (United States)

    Bar-Cohen, Yoseph


    Refreshable Braille can help visually impaired persons benefit from the growing advances in computer technology. The development of such displays in a full screen form is a great challenge due to the need to pack many actuators in small area without interferences. In recent years, various displays using actuators such as piezoelectric stacks have become available in commercial form but most of them are limited to one line Braille code. Researchers in the field of electroactive polymers (EAP) investigated methods of using these materials to form full screen displays. This manuscript reviews the state of the art of producing refreshable Braille displays using EAP-based actuators.

  19. Human Factors Military Lexicon: Auditory Displays

    National Research Council Canada - National Science Library

    Letowski, Tomasz


    .... In addition to definitions specific to auditory displays, speech communication, and audio technology, the lexicon includes several terms unique to military operational environments and human factors...


    Directory of Open Access Journals (Sweden)

    Ina Melati


    Full Text Available Most of ritel outlet recently using product display as a one of their best marketing strategy, the reason is quiet easy to be understood, since consumers are too easy to be teased by those kind of beautiful product display that is being displayed by the retail outlet. The good retail outlets are trying their best to design and make the very good product display, so they can attract more consumers and make them not thinking twice to visit their store and purchase lots of thing. Clearly seeing that an attractive product design is able to influence a consumer to make a buying decision. 

  1. Application of the Decomposition Method to the Design Complexity of Computer-based Display

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hyoung Ju; Lee, Seung Woo; Seong, Poong Hyun [Korea Advanced Institute of Science and Technology, Daejeon (Korea, Republic of); Park, Jin Kyun [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)


    The importance of the design of human machine interfaces (HMIs) for human performance and safety has long been recognized in process industries. In case of nuclear power plants (NPPs), HMIs have significant implications for the safety of the NPPs since poor implementation of HMIs can impair the operators' information searching ability which is considered as one of the important aspects of human behavior. To support and increase the efficiency of the operators' information searching behavior, advanced HMIs based on computer technology are provided. Operators in advanced main control room (MCR) acquire information through video display units (VDUs), and large display panel (LDP) required for the operation of NPPs. These computer-based displays contain a very large quantity of information and present them in a variety of formats than conventional MCR. For example, these displays contain more elements such as abbreviations, labels, icons, symbols, coding, and highlighting than conventional ones. As computer-based displays contain more information, complexity of the elements becomes greater due to less distinctiveness of each element. A greater understanding is emerging about the effectiveness of designs of computer-based displays, including how distinctively display elements should be designed. And according to Gestalt theory, people tend to group similar elements based on attributes such as shape, color or pattern based on the principle of similarity. Therefore, it is necessary to consider not only human operator's perception but the number of element consisting of computer-based display

  2. Two stages of parafoveal processing during reading: Evidence from a display change detection task. (United States)

    Angele, Bernhard; Slattery, Timothy J; Rayner, Keith


    We used a display change detection paradigm (Slattery, Angele, & Rayner Human Perception and Performance, 37, 1924-1938 2011) to investigate whether display change detection uses orthographic regularity and whether detection is affected by the processing difficulty of the word preceding the boundary that triggers the display change. Subjects were significantly more sensitive to display changes when the change was from a nonwordlike preview than when the change was from a wordlike preview, but the preview benefit effect on the target word was not affected by whether the preview was wordlike or nonwordlike. Additionally, we did not find any influence of preboundary word frequency on display change detection performance. Our results suggest that display change detection and lexical processing do not use the same cognitive mechanisms. We propose that parafoveal processing takes place in two stages: an early, orthography-based, preattentional stage, and a late, attention-dependent lexical access stage.



    Sims, Regina C.; Whitfield, Keith E; Ayotte, Brian J.; Gamaldo, Alyssa A; Edwards, Christopher L.; Allaire, Jason C.


    The current analysis examined (a) if measures of psychological well-being predict subjective memory, and (b) if subjective memory is consistent with actual memory. Five hundred seventy-nine older African Americans from the Baltimore Study of Black Aging completed measures assessing subjective memory, depressive symptomatology, perceived stress, locus of control, and verbal and working memory. Higher levels of perceived stress and greater externalized locus of control predicted poorer subjecti...

  4. Effect of display location on control-display stereotype strength for translational and rotational controls with linear displays. (United States)

    Chan, Alan H S; Hoffmann, Errol R


    Experiments were designed to investigate the effects of control type and display location, relative to the operator, on the strength of control/display stereotypes. The Worringham and Beringer Visual Field principle and an extension of this principle for rotary controls (Hoffmann E.R., and Chan A.H.S. 2013). "The Worringham and Beringer 'Visual Field' Principle for Rotary Controls. Ergonomics." 56 (10): 1620-1624) indicated that, for a number of different control types (rotary and lever) on different planes, there should be no significant effect of the display location relative to the seated operator. Past data were surveyed and stereotype strengths listed. Experiments filled gaps where data are not available. Six different control types and seven display locations were used, as in the Frame of Reference Transformation Tool (FORT) model of Wickens et al. (Wickens, C.D., Keller, J.W., and Small, R.L. (2010). "Left. No, Right! Development of the Frame of Reference Transformation Tool (FORT)." Proceedings of the Human Factors and Ergonomics Society 54th Annual Meeting September 2010, 54: 1022-1026). Control/display arrangements with high stereotype strengths were evaluated yielding data for designers of complex control/display arrangements where the control and display are in different planes and for where the operator is moving. It was found possible to predict display/control arrangements with high stereotype strength, based on past data. Practitioner Summary: Controls and displays in complex arrangements need to have high compatibility. These experiments provide arrangements for six different controls (rotary and translational) and seven different display locations relative to the operator.

  5. Sensibility and Subjectivity: Levinas’ Traumatic Subject

    Directory of Open Access Journals (Sweden)

    Rashmika Pandya


    Full Text Available The importance of Levinas’ notions of sensibility and subjectivity are evident in the revision of phenomenological method by current phenomenologists such as Jean-Luc Marion and Michel Henry. The criticisms of key tenants of classical phenomenology, intentionality and reduction, are of a particular note. However, there are problems with Levinas’ characterization of subjectivity as essentially sensible. In “Totality and Infinity” and “Otherwise than Being”, Levinas criticizes and recasts a traditional notion of subjectivity, particularly the notion of the subject as the first and foremost rational subject. The subject in Levinas’ works is characterized more by its sensibility and affectedness than by its capacity to reason or affect its world. Levinas ties rationality to economy and suggests an alternative notion of reason that leads to his analysis of the ethical relation as the face-to-face encounter. The ‘origin’ of the social relation is located not in our capacity to know but rather in a sensibility that is diametrically opposed to the reason understood as economy. I argue that the opposition in Levinas’ thought between reason and sensibility is problematic and essentially leads to a self-conflicted subject. In fact, it would seem that violence characterizes the subject’s self-relation and, thus, is also inscribed at the base of the social relation. Rather than overcoming a problematic tendency to dualistic thought in philosophy Levinas merely reverses traditional hierarchies of reason/emotion, subject/object and self/other. 

  6. Optimization of light field display-camera configuration based on display properties in spectral domain. (United States)

    Bregović, Robert; Kovács, Péter Tamás; Gotchev, Atanas


    The visualization capability of a light field display is uniquely determined by its angular and spatial resolution referred to as display passband. In this paper we use a multidimensional sampling model for describing the display-camera channel. Based on the model, for a given display passband, we propose a methodology for determining the optimal distribution of ray generators in a projection-based light field display. We also discuss the required camera setup that can provide data with the necessary amount of details for such display that maximizes the visual quality and minimizes the amount of data.

  7. Effects of floral display size on male and female reproductive success in Mimulus ringens (United States)

    Karron, Jeffrey D.; Mitchell, Randall J.


    Background and Aims The number of flowers blooming simultaneously on a plant may have profound consequences for reproductive success. Large floral displays often attract more pollinator visits, increasing outcross pollen receipt. However, pollinators frequently probe more flowers in sequence on large displays, potentially increasing self-pollination and reducing pollen export per flower. To better understand how floral display size influences male and female fitness, we manipulated display phenotypes and then used paternity analysis to quantify siring success and selfing rates. Methods To facilitate unambiguous assignment of paternity, we established four replicate (cloned) arrays of Mimulus ringens, each consisting of genets with unique combinations of homozygous marker genotypes. In each array, we trimmed displays to two, four, eight or 16 flowers. When fruits ripened, we counted the number of seeds per fruit and assigned paternity to 1935 progeny. Key Results Siring success per flower declined sharply with increasing display size, while female success per flower did not vary with display. The rate of self-fertilization increased for large floral displays, but siring losses due to geitonogamous pollen discounting were much greater than siring gains through increased self-fertilization. As display size increased, each additional seed sired through geitonogamous self-pollination was associated with a loss of 9·7 seeds sired through outcrossing. Conclusions Although total fitness increased with floral display size, the marginal return on each additional flower declined steadily as display size increased. Therefore, a plant could maximize fitness by producing small displays over a long flowering period, rather than large displays over a brief flowering period. PMID:21880660

  8. Visual perception of spatial subjects

    Energy Technology Data Exchange (ETDEWEB)

    Osterloh, K.R.S.; Ewert, U. [Federal Institute for Materials Research and Testing (BAM), Berlin (Germany)


    Principally, any imaging technology consists of two consecutive, though strictly separated processes: data acquisition and subsequent processing to generate an image that can be looked at, either on a monitor screen or printed on paper. Likewise, the physiological process of viewing can be separated into vision and perception, though these processes are much more overlapping. Understanding the appearance of a subject requires the entire sequence from receiving the information carried e.g. by photons up to an appropriate processing leading to the perception of the subject shown. As a consequence, the imagination of a subject is a result of both, technological and physiological processes. Whenever an evaluation of an image is critical, also the physiological part of the processing should be considered. However, an image has two dimensions in the first place and reality is spatial, it has three dimensions. This problem has been tackled on a philosophical level at least since Platon's famous discussion on the shadow image in a dark cave. The mere practical point is which structural details can be perceived and what may remain undetected depending on the mode of presentation. This problem cannot be resolved without considering each single step of visual perception. Physiologically, there are three 'tools' available to understanding the spatial structure of a subject: binocular viewing, following the course of perspective projection and motion to collect multiple aspects. Artificially, an object may be cut in various ways to display the interior or covering parts could be made transparent within a model. Samples will be shown how certain details of a subject can be emphasised or hidden depending on the way of presentation. It needs to be discussed what might help to perceive the true spatial structure of a subject with all relevant details and what could be misleading. (authors)

  9. Characterising laser beams with liquid crystal displays

    CSIR Research Space (South Africa)

    Dudley, Angela L


    Full Text Available decomposition of light has been known for a long time, applied mostly to pattern recognition, we illustrate how this technique can be implemented with the use of liquid-crystal displays. We show experimentally how liquid crystal displays can be used to infer...

  10. Ribosome display for improved biotherapeutic molecules. (United States)

    Rothe, Achim; Hosse, Ralf J; Power, Barbara E


    Ribosome display presents an innovative in vitro technology for the rapid isolation and evolution of high-affinity peptides or proteins. Displayed proteins are bound to and recovered from target molecules in multiple rounds of selection in order to enrich for specific binding proteins. No transformation step is necessary, which could lead to a loss of library diversity. A cycle of display and selection can be performed in one day, enabling the existing gene repertoire to be rapidly scanned. Proteins isolated from the panning rounds can be further modified through random or directed molecular evolution for affinity maturation, as well as selected for characteristics such as protein stability, folding and functional activity. Recently, the field of display technologies has become more prominent due to the generation of new scaffolds for ribosome display, isolation of high-affinity human antibodies by phage display, and their implementation in the discovery of novel protein-protein interactions. Applications for this technology extend into the broad field of antibody engineering, proteomics, and synthetic enzymes for diagnostics and therapeutics in cancer, autoimmune and infectious diseases, neurodegenerative diseases and inflammatory disorders. This review highlights the role of ribosome display in drug discovery, discusses advantages and disadvantages of the system, and attempts to predict the future impact of ribosome display technology on the development of novel engineered biopharmaceutical products for biological therapies.

  11. (Hibiscus sabdariffa L.) roots by differential display

    African Journals Online (AJOL)



    Dec 31, 2014 ... display reverse transcriptase PCR (DDRT-PCR) was used to compare the overall differences in gene ... Abbreviations: DDRT-PCR, Differential display reverse transcriptase polymerase chain reaction, ESTs, expressed sequence tags; ... Agricultural Research Corporation's Obeid Research Substation in.

  12. A visual-display and storage device (United States)

    Bosomworth, D. R.; Moles, W. H.


    Memory and display device uses cathodochromic material to store visual information and fast phosphor to recall information for display and electronic processing. Cathodochromic material changes color when bombarded with electrons, and is restored to its original color when exposed to light of appropiate wavelength.

  13. Coordinated Displays to Assist Cyber Defenders (United States)


    checks: Detecting satisficing to increase statistical power. Journal of Experimental Social Psychology , 45, 867-872. Scarfone, K., & Mell, P. (2007...regardless of display condition (coordinated or uncoordinated). METHOD Participants & Experimental Design In this experiment, 46 people (19...previous experience in cyber defense. Experimental Design This study featured a single experimental factor, display condition, and a control

  14. Monitor displays in radiology: Part 2


    INDRAJIT, IK; Verma, BS


    Monitor displays play an important role in modern radiology practice. Practicing radiologists need to be familiar with the various performance parameters of medical-grade displays. A certain amount of technical knowledge is useful when making purchasing decisions since the right choice of equipment can have a great impact on the accuracy, efficiency, and speed in the radiology department.

  15. 33 CFR 4.02 - Display. (United States)


    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Display. 4.02 Section 4.02 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY GENERAL OMB CONTROL NUMBERS ASSIGNED PURSUANT TO THE PAPERWORK REDUCTION ACT § 4.02 Display. 33 CFR part or section where identified...

  16. 49 CFR 509.2 - Display. (United States)


    ... 49 Transportation 6 2010-10-01 2010-10-01 false Display. 509.2 Section 509.2 Transportation Other Regulations Relating to Transportation (Continued) NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION OMB CONTROL NUMBERS FOR INFORMATION COLLECTION REQUIREMENTS § 509.2 Display. 49 CFR...

  17. 41 CFR 60-999.2 - Display. (United States)


    ... 41 Public Contracts and Property Management 1 2010-07-01 2010-07-01 true Display. 60-999.2 Section 60-999.2 Public Contracts and Property Management Other Provisions Relating to Public Contracts... CONTROL NUMBERS FOR OFCCP INFORMATION COLLECTION REQUIREMENTS § 60-999.2 Display. 41 CFR Part where the...

  18. Display Developer for Firing Room Applications (United States)

    Bowman, Elizabeth A.


    The firing room at Kennedy Space Center (KSC) is responsible for all NASA human spaceflight launch operations, therefore it is vital that all displays within the firing room be properly tested, up-to-date, and user-friendly during a launch. The Ground Main Propulsion System (GMPS) requires a number of remote displays for Vehicle Integration and Launch (VIL) Operations at KSC. My project is to develop remote displays for the GMPS using the Display Services and Framework (DSF) editor. These remote displays will be based on model images provided by GMPS through PowerPoint. Using the DSF editor, the PowerPoint images can be recreated with active buttons associated with the correct Compact Unique Identifiers (CUIs). These displays will be documented in the Software Requirements and Design Specifications (SRDS) at the 90% GMPS Design Review. In the future, these remote displays will be available for other developers to improve, edit, or add on to so that the display may be incorporated into the firing room to be used for launches.

  19. Adolescents with greater mental toughness show higher sleep efficiency, more deep sleep and fewer awakenings after sleep onset. (United States)

    Brand, Serge; Gerber, Markus; Kalak, Nadeem; Kirov, Roumen; Lemola, Sakari; Clough, Peter J; Pühse, Uwe; Holsboer-Trachsler, Edith


    Mental toughness (MT) is understood as the display of confidence, commitment, challenge, and control. Mental toughness is associated with resilience against stress. However, research has not yet focused on the relation between MT and objective sleep. The aim of the present study was therefore to explore the extent to which greater MT is associated with objectively assessed sleep among adolescents. A total of 92 adolescents (35% females; mean age, 18.92 years) completed the Mental Toughness Questionnaire. Participants were split into groups of high and low mental toughness. Objective sleep was recorded via sleep electroencephalograms and subjective sleep was assessed via a questionnaire. Compared with participants with low MT, participants with high MT had higher sleep efficiency, a lower number of awakenings after sleep onset, less light sleep, and more deep sleep. They also reported lower daytime sleepiness. Adolescents reporting higher MT also had objectively better sleep, as recorded via sleep electroencephalograms. A bidirectional association between MT and sleep seems likely; therefore, among adolescence, improving sleep should increase MT, and improving MT should increase sleep. Copyright © 2014 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.

  20. Plasma Display at the Liberty Science Center (United States)

    Bruder, Dan; Gilligan, Nick; Tarman, Lisa; Ferris, Pamella; Morgan, James; Delooper, John; Zwicker, Andrew


    The Liberty Science Center (LSC) is the largest (300,000 sq. ft.) education resource in the New Jersey -- New York City region. PPPL in collaboration with the LSC has had a display at the center since 2007 More than 1.5 million visitors have come to the museum since the plasma display has been introduced. The plasma display has had significant use during that time frame. During the summer of 2009 a redesigned plasma exhibit was created by a student teacher-team using the lessons learned from the existing exhibit. The display includes a DC glow discharge tube with a permanent external magnet allowing visitors to manipulate the plasma and see how plasma can be used for fusion research. The goal of the display is to allow an individual to see a plasma and understand the potential benefits of fusion energy.

  1. Holistic peripheral processing of a polygon display. (United States)

    Hughes, T; MacRae, A W


    Polygon displays compress information that would otherwise be conveyed by separate indicators into a single display in which each reading is represented by the distance of a polygon vertex from its center. The effect on detection of fault states of varying the number of polygon vertices from 4 to 20 in a display presented peripherally around a dynamic, simulated flight display was studied. Presence of the dynamic task reduced both speed and accuracy of response to the polygon display but did not significantly affect the pattern of response to differing numbers of vertices. All measures of performance were better with larger numbers of vertices. If the vertices are processed serially, more vertices require more processing time. Therefore, the result argues for holistic processing and implies that such information integration is beneficial to human performance in fault detection.

  2. Three-dimensional hologram display system (United States)

    Mintz, Frederick (Inventor); Chao, Tien-Hsin (Inventor); Bryant, Nevin (Inventor); Tsou, Peter (Inventor)


    The present invention relates to a three-dimensional (3D) hologram display system. The 3D hologram display system includes a projector device for projecting an image upon a display medium to form a 3D hologram. The 3D hologram is formed such that a viewer can view the holographic image from multiple angles up to 360 degrees. Multiple display media are described, namely a spinning diffusive screen, a circular diffuser screen, and an aerogel. The spinning diffusive screen utilizes spatial light modulators to control the image such that the 3D image is displayed on the rotating screen in a time-multiplexing manner. The circular diffuser screen includes multiple, simultaneously-operated projectors to project the image onto the circular diffuser screen from a plurality of locations, thereby forming the 3D image. The aerogel can use the projection device described as applicable to either the spinning diffusive screen or the circular diffuser screen.

  3. A new emissive projection display technology and a high contrast DLP projection display on black screen (United States)

    Sun, Ted X.; Cheng, Botao


    In this paper, Sun Innovations demonstrates an innovative emissive projection display (EPD) system. It is comprised of a fully transparent fluorescent screen with a UV image projector. The screen can be applied to glass windows or windshield, without affecting visible light transmission. The UV projector can be based on either a DLP (digital light processor) or a laser scanner display engine. For a DLP based projector, a discharge lamp coupled to a set of UV filters can be applied to generate a full color video image on the transparent screen. UV or blue-ray laser diodes of different wavelengths can be combined with scanning mirrors to generate a vector display for full windshield display applications. This display combines the best of both worlds of conventional projection and emissive display technologies. Like a projection display, the screen has no pixel structure and can be manufactured roll to roll; the display is scalable. Like an emissive display (e.g. plasma or CRT), the quality of the image is superior, with very large viewing angles. It also offers some unique features. For example, in addition to a fully transparent display on windows or windshields, it can be applied to a black substrate to create the first front projection display on true "black" screen that has superior image contrast at low projection power. This fundamentally new display platform can enable multiple major commercial applications that can not be addressed by any of the existing display technologies.

  4. Organized simultaneous displays facilitate learning of complex natural science categories. (United States)

    Meagher, Brian J; Carvalho, Paulo F; Goldstone, Robert L; Nosofsky, Robert M


    Subjects learned to classify images of rocks into the categories igneous, metamorphic, and sedimentary. In accord with the real-world structure of these categories, the to-be-classified rocks in the experiments had a dispersed similarity structure. Our central hypothesis was that learning of these complex categories would be improved through observational study of organized, simultaneous displays of the multiple rock tokens. In support of this hypothesis, a technique that included the presentation of the simultaneous displays during phases of the learning process yielded improved acquisition (Experiment 1) and generalization (Experiment 2) compared to methods that relied solely on sequential forms of study and testing. The technique appears to provide a good starting point for application of cognitive-psychology principles of effective category learning to the science classroom.

  5. Three decades of research on the greater Agulhas Current

    Directory of Open Access Journals (Sweden)

    J. R. E. Lutjeharms


    Full Text Available The greater Agulhas Current has been shown to be a key link in the global thermohaline circulation and an increased understanding of this current system is therefore of more than just local interest. Knowledge on the Agulhas Current system has in fact increased enormously over the past 30 years. This review covers some aspects of what has been learnt on the northern and the southern parts of the Agulhas Current proper and their influence on the waters and circulation of the adjoining continental shelf. It also discusses the Natal Pulse and new information that has been gained on how it is triggered and what influence it has. It deals with the Agulhas retroflection, the shedding of Agulhas rings and the movement and characteristics of these rings that contributes to the meridional overturning circulation of the global ocean. The Agulhas Return Current forms part of the final outflow of the system and current knowledge on that current is appraised. The sources of the Agulhas Current have been a controversial subject for many years and this dispute continues. This is described and discussed, based on what information has been gained from research over the past three decades. Building on what is currently known, some suggestions are given on the most important remaining knowledge gaps and how these could most efficaciously be filled.

  6. Designing an obstacle display for helicopter operations in degraded visual environment (United States)

    Knabl, Patrizia M.; Peinecke, Niklas


    Flying in degraded visual environment is an extremely challenging task for a helicopter pilot. The loss of the outside visual reference causes impaired situation awareness, high workload and spatial disorientation leading to incidents like obstacle or ground hits. DLR is working on identifying ways to reduce this problem by providing the pilot with additional information from fused sensor data. Therefore, different display design solutions were developed. In a first study, the design focused on the use of a synthetic head-down display, considering different representations for obstacles, color coding and terrain features. Results show a subjective preference for the most detailed obstacle display, while objective results reveal better performance for the little less detailed display. In a second study, symbology for a helmet-mounted display was designed and evaluated in a part-task simulation. Design considerations focused on different obstacle representations as well as attentional and perceptual aspects associated with the use of helmet-mounted displays. Results show consistent findings to the first experiment, indicating that the display subjectively favored does not necessarily contribute to the best performance in detection. However when additional tasks have to be performed the level of clutter seems to impair the ability to respond correctly to secondary tasks. Thus the favored display type nonetheless seems to be the most promising solution since it is accompanied by the overall best objective results integrating both detection of obstacles and the ability to perform additional tasks.

  7. [Odor sensing system and olfactory display]. (United States)

    Nakamoto, Takamichi


    In this review, an odor sensing system and an olfactory display are introduced into people in pharmacy. An odor sensing system consists of an array of sensors with partially overlapping specificities and pattern recognition technique. One of examples of odor sensing systems is a halitosis sensor which quantifies the mixture composition of three volatile sulfide compounds. A halitosis sensor was realized using a preconcentrator to raise sensitivity and an electrochemical sensor array to suppress the influence of humidity. Partial least squares (PLS) method was used to quantify the mixture composition. The experiment reveals that the sufficient accuracy was obtained. Moreover, the olfactory display, which present scents to human noses, is explained. A multi-component olfactory display enables the presentation of a variety of smells. The two types of multi-component olfactory display are described. The first one uses many solenoid valves with high speed switching. The valve ON frequency determines the concentration of the corresponding odor component. The latter one consists of miniaturized liquid pumps and a surface acoustic wave (SAW) atomizer. It enables the wearable olfactory display without smell persistence. Finally, the application of the olfactory display is demonstrated. Virtual ice cream shop with scents was made as a content of interactive art. People can enjoy harmony among vision, audition and olfaction. In conclusion, both odor sensing system and olfactory display can contribute to the field of human health care.

  8. Advance in phage display technology for bioanalysis. (United States)

    Tan, Yuyu; Tian, Tian; Liu, Wenli; Zhu, Zhi; J Yang, Chaoyong


    Phage display technology has emerged as a powerful tool for target gene expression and target-specific ligand selection. It is widely used to screen peptides, proteins and antibodies with the advantages of simplicity, high efficiency and low cost. A variety of targets, including ions, small molecules, inorganic materials, natural and biological polymers, nanostructures, cells, bacteria, and even tissues, have been demonstrated to generate specific binding ligands by phage display. Phages and target-specific ligands screened by phage display have been widely used as affinity reagents in therapeutics, diagnostics and biosensors. In this review, comparisons of different types of phage display systems are first presented. Particularly, microfluidic-based phage display, which enables screening with high throughput, high efficiency and integration, is highlighted. More importantly, we emphasize the advances in biosensors based on phages or phage-derived probes, including nonlytic phages, lytic phages, peptides or proteins screened by phage display, phage assemblies and phage-nanomaterial complexes. However, more efficient and higher throughput phage display methods are still needed to meet an explosion in demand for bioanalysis. Furthermore, screening of cyclic peptides and functional peptides will be the hotspot in bioanalysis. Copyright © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  9. The display of portable infrared measuring temperature (United States)

    Qian, Yitao; Gu, Guohua; Sui, Xiubao


    In recent years based on security, quality supervision, inspection and medical for the urgent need of infrared temperature measurement and infrared display technology, coupled with embedded system to achieve rapid development, which is widely used in the electronic products and the field of intelligent instruments and industrial control, this paper has designed a kind of more comprehensive, more efficient and more intuitive infrared thermometer. Unlike previous handheld infrared thermometer, we regard an embedded Linux system as the system, with its open source code, support most mainstream hardware platforms, unified peripheral interface and can be customized, to build an embedded infrared system that has provided strong system support; the pseudocolor techniques and Qt interface display technology make the image more colorful and the picture function more diverse; With ARM microprocessor as the display and temperature measuring platform, it costs reduction and reduce volume and power consumption; the FrameBuffer interface technology and multithreading technology realize the smooth real-time display. And ultimately the display size of real-time infrared image is 640 * 480 at a speed of 25 frames / sec. What is more, display is equipped with the menu option so that thermometer can be required to complete the operation through the button. The temperature display system aims at small volume, easy to use and flexible. I believe this thermometer will have a good application prospect.

  10. Transparent 3D display for augmented reality (United States)

    Lee, Byoungho; Hong, Jisoo


    Two types of transparent three-dimensional display systems applicable for the augmented reality are demonstrated. One of them is a head-mounted-display-type implementation which utilizes the principle of the system adopting the concave floating lens to the virtual mode integral imaging. Such configuration has an advantage in that the threedimensional image can be displayed at sufficiently far distance resolving the accommodation conflict with the real world scene. Incorporating the convex half mirror, which shows a partial transparency, instead of the concave floating lens, makes it possible to implement the transparent three-dimensional display system. The other type is the projection-type implementation, which is more appropriate for the general use than the head-mounted-display-type implementation. Its imaging principle is based on the well-known reflection-type integral imaging. We realize the feature of transparent display by imposing the partial transparency to the array of concave mirror which is used for the screen of reflection-type integral imaging. Two types of configurations, relying on incoherent and coherent light sources, are both possible. For the incoherent configuration, we introduce the concave half mirror array, whereas the coherent one adopts the holographic optical element which replicates the functionality of the lenslet array. Though the projection-type implementation is beneficial than the head-mounted-display in principle, the present status of the technical advance of the spatial light modulator still does not provide the satisfactory visual quality of the displayed three-dimensional image. Hence we expect that the head-mounted-display-type and projection-type implementations will come up in the market in sequence.

  11. Isolation of antimicrobial-resistant Escherichia coli from retail meats purchased in Greater Washington, DC, USA. (United States)

    Schroeder, Carl M; White, David G; Ge, Beilei; Zhang, Yifan; McDermott, Patrick F; Ayers, Sherry; Zhao, Shaohua; Meng, Jianghong


    Four hundred and seventy-two generic Escherichia coli isolates were recovered from ground and whole retail beef, chicken, pork, and turkey obtained from Greater Washington, DC, USA during the years 1998 to 2000. Many of the isolates displayed resistance to tetracycline (59%), sulfamethoxazole (45%), streptomycin (44%), cephalothin (38%) and ampicillin (35%). Resistance was also observed, but to a lesser extent, to gentamicin (12%), nalidixic acid (8%), chloramphenicol (6%), ceftiofur (4%) and ceftriaxone (1%). Sixteen percent of the isolates displayed resistance to one antimicrobial, followed by 23% to two, 23% to three, 12% to four, 7% to five, 3% to six, 2% to seven and 2% to eight. Three E. coli isolates were shown to possess Shiga toxin genes (stx2) via PCR; all were O non-typeable and were recovered from ground beef samples purchased on the same day at the same supermarket. One of the Shiga toxin-producing E. coli (STEC) isolates was susceptible to each of the antimicrobials tested, whereas one displayed resistance to cephalothin and sulfamethoxazole, and one displayed resistance to ampicillin, cephalothin, gentamicin, streptomycin, sulfamethoxazole and tetracycline. Findings from this study indicate that retail raw meats may often be contaminated with antimicrobial-resistant E. coli.

  12. Multiple Image Arrangement for Subjective Quality Assessment (United States)

    Wang, Yan; Zhai, Guangtao


    Subjective quality assessment serves as the foundation for almost all visual quality related researches. Size of the image quality databases has expanded from dozens to thousands in the last decades. Since each subjective rating therein has to be averaged over quite a few participants, the ever-increasing overall size of those databases calls for an evolution of existing subjective test methods. Traditional single/double stimulus based approaches are being replaced by multiple image tests, where several distorted versions of the original one are displayed and rated at once. And this naturally brings upon the question of how to arrange those multiple images on screen during the test. In this paper, we answer this question by performing subjective viewing test with eye tracker for different types arrangements. Our research indicates that isometric arrangement imposes less duress on participants and has more uniform distribution of eye fixations and movements and therefore is expected to generate more reliable subjective ratings.

  13. Real-Time, Interactive Sonic Boom Display (United States)

    Haering, Jr., Edward A. (Inventor); Plotkin, Kenneth J. (Inventor)


    The present invention is an improved real-time, interactive sonic boom display for aircraft. By using physical properties obtained via various sensors and databases, the invention determines, in real-time, sonic boom impacts locations and intensities for aircraft traveling at supersonic speeds. The information is provided to a pilot via a display that lists a selectable set of maneuvers available to the pilot to mitigate sonic boom issues. Upon selection of a maneuver, the information as to the result of the maneuver is displayed and the pilot may proceed with making the maneuver, or provide new data to the system in order to calculate a different maneuver.

  14. Does Working Memory Load Lead to Greater Impulsivity? Commentary on Hinson, Jameson, and Whitney (2003) (United States)

    Franco-Watkins, Ana M.; Pashler, Harold; Rickard, Timothy C.


    Previous research by J. M. Hinson, T. L. Jameson, and P. Whitney (2003) demonstrated that a secondary task in a delayed discounting paradigm increased subjects' preference for the immediate reward. J. M. Hinson et al. interpreted their findings as evidence that working memory load results in greater impulsivity. The present authors conducted a…

  15. Firework displays as sources of particles similar to gunshot residue. (United States)

    Grima, Matthew; Butler, Mark; Hanson, Robert; Mohameden, Ahmed


    In light of past research being targeted to find specific particles which may be similar to gunshot residue (GSR), this project was formulated to detect any possible particulate by random particle fallout onto substrates at firework displays and to assess the impact this may have on GSR evidence. Firework residue was collected at a display site, from amongst spectators as well as from the author's hair 90min after the display. SEM-EDX analysis has detected such particulate in all three scenarios, with the firework particle population at large providing a solid ground for discrimination from GSR. Wind dispersal was found to decrease the particle population and subsequently, the latter's discriminatory power. Some particles, if treated individually were found to be indistinguishable from GSR. Findings also include residues which may mimic strontium based GSR as well as GSR which may be mixed with that from previous firings. The continuous changes made to primer and propellant compositions by manufacturers also call for greater consideration when classifying particles as originating from pyrotechnic devices. Furthermore, authorities such as police forces should be made more aware about the incidence of such particle transfer in firework related periods. Copyright © 2011 Forensic Science Society. Published by Elsevier Ireland Ltd. All rights reserved.

  16. Polychromatic SSVEP stimuli with subtle flickering adapted to brain-display interactions (United States)

    Chien, Yu-Yi; Lin, Fang-Cheng; Zao, John K.; Chou, Ching-Chi; Huang, Yi-Pai; Kuo, Heng-Yuan; Wang, Yijun; Jung, Tzyy-Ping; Shieh, Han-Ping D.


    Objective. Interactive displays armed with natural user interfaces (NUIs) will likely lead the next breakthrough in consumer electronics, and brain-computer interfaces (BCIs) are often regarded as the ultimate NUI-enabling machines to respond to human emotions and mental states. Steady-state visual evoked potentials (SSVEPs) are a commonly used BCI modality due to the ease of detection and high information transfer rates. However, the presence of flickering stimuli may cause user discomfort and can even induce migraines and seizures. With the aim of designing visual stimuli that can be embedded into video images, this study developed a novel approach to induce detectable SSVEPs using a composition of red/green/blue flickering lights. Approach. Based on the opponent theory of colour vision, this study used 32 Hz/40 Hz rectangular red-green or red-blue LED light pulses with a 50% duty cycle, balanced/equal luminance and 0°/180° phase shifts as the stimulating light sources and tested their efficacy in producing SSVEP responses with high signal-to-noise ratios (SNRs) while reducing the perceived flickering sensation. Main results. The empirical results from ten healthy subjects showed that dual-colour lights flickering at 32 Hz/40 Hz with a 50% duty cycle and 180° phase shift achieved a greater than 90% detection accuracy with little or no flickering sensation. Significance. As a first step in developing an embedded SSVEP stimulus in commercial displays, this study provides a foundation for developing a combination of three primary colour flickering backlights with adjustable luminance proportions to create a subtle flickering polychromatic light that can elicit SSVEPs at the basic flickering frequency.

  17. The Prevalence of Intestinal Parasites Is Not Greater Among Individuals With Irritable Bowel Syndrome

    DEFF Research Database (Denmark)

    Krogsgaard, Laura Rindom; Engsbro, Anne Line; Stensvold, Christen Rune


    -based research institute in Denmark. In January 2010, subjects completed a questionnaire based on the Rome III criteria for IBS and answered questions on factors associated with parasite carriage. Respondents (n = 483) were asked to submit fecal samples for parasite testing; samples were analyzed from 124 cases......BACKGROUND & AIMS: The parasites Dientamoeba fragilis and Blastocystis have been detected in feces from patients with irritable bowel syndrome (IBS), therefore these parasites may be involved in IBS pathogenesis. We proposed that a higher prevalence of the parasites in IBS subjects compared...... and 204 controls. RESULTS: A greater proportion of controls than cases carried the parasites (50% vs 36%; P = .01). D fragilis was detected in a greater proportion of fecal samples from controls than cases (35% vs 23%; P = .03), as was Blastocystis (22% of controls vs 15% of cases; P = .09), and a greater...

  18. Signal processing and display for electrochemical data (United States)

    Young, R. N.; Wilkins, J. R.


    Two electrochemical electrodes provide signals; apparatus automatically determines reaction end point and displays lag period in time or cell concentration. Apparatus can be used with standard pH reference anode and platinum anode or with redox electrodes.

  19. High Resolution Autostereoscopic Cockpit Display Project (United States)

    National Aeronautics and Space Administration — During this Phase II program Dimension Technologies Inc. (DTI) proposes to design and build an autostereoscopic (glasses-free 3D) LCD based aircraft cockpit display...

  20. Projection/Reflection Heads-up Display (United States)

    National Aeronautics and Space Administration — To address the NASA need for an extravehicular activity (EVA) information display device, Physical Optics Corporation (POC) proposes to advance development of a new...

  1. Three D displays in military applications (United States)

    Trakalo, M.


    The evolution to 3D content is considered to be the next quantum leap in the movie industry, and is currently taking place. The prospect of the home entertainment industry adopting 3D is causing display manufacturers to develop 3D compatible products. In the past, 3D displays have often been limited by poor image quality. The current generation of 3D displays can have image quality that approaches that of their 2D counterparts. 3D content has found its way to the cinema and is seeking a way into the home, but will it have a place in the military environment? This paper discusses the current status of 3D display technology and its suitability to the military ground mobile environment. It includes an introduction to 3D visualization and examines issues such as implementation, image quality, and human factors.

  2. Compressive multi-mode superresolution display

    KAUST Repository

    Heide, Felix


    Compressive displays are an emerging technology exploring the co-design of new optical device configurations and compressive computation. Previously, research has shown how to improve the dynamic range of displays and facilitate high-quality light field or glasses-free 3D image synthesis. In this paper, we introduce a new multi-mode compressive display architecture that supports switching between 3D and high dynamic range (HDR) modes as well as a new super-resolution mode. The proposed hardware consists of readily-available components and is driven by a novel splitting algorithm that computes the pixel states from a target high-resolution image. In effect, the display pixels present a compressed representation of the target image that is perceived as a single, high resolution image. © 2014 Optical Society of America.

  3. Advanced Plasmonic Materials for Dynamic Color Display. (United States)

    Shao, Lei; Zhuo, Xiaolu; Wang, Jianfang


    Plasmonic structures exhibit promising applications in high-resolution and durable color generation. Research on advanced hybrid plasmonic materials that allow dynamically reconfigurable color control has developed rapidly in recent years. Some of these results may give rise to practically applicable reflective displays in living colors with high performance and low power consumption. They will attract broad interest from display markets, compared with static plasmonic color printing, for example, in applications such as digital signage, full-color electronic paper, and electronic device screens. In this progress report, the most promising recent examples of utilizing advanced plasmonic materials for the realization of dynamic color display are highlighted and put into perspective. The performances, advantages, and disadvantages of different technologies are discussed, with emphasis placed on both the potential and possible limitations of various hybrid materials for dynamic plasmonic color display. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  4. Bioadsorption strategies with yeast molecular display technology. (United States)

    Shibasaki, Seiji; Ueda, Mitsuyoshi


    Molecular display techniques using microbial cell surfaces have been widely developed in the past twenty years, and are useful tools as whole cell catalysts for various applications such as bioconversion, bioremediation, biosensing, and the screening system of protein libraries. Furthermore, different types of microbial cells among eukaryotic and prokaryotic strains have been investigated for their use in surface display technologies. Recently, several kinds of protein-displaying yeasts have been utilized as bioadsorbents in this platform technology. In particular, these trials have successfully expanded the possibility of applications to metal binding, affinity purification, and receptor-ligand interaction by using the yeast cell surface. In this mini review, we describe the general principles of molecular display technology using yeast cells and its applications, with a particular focus on bioadsorption.

  5. Space Station Displays and Controls Technology Evolution (United States)

    Blackburn, Greg C.


    Viewgraphs on space station displays and controls technology evolution are presented. Topics covered include: a historical perspective; major development objectives; current development activities; key technology areas; and technology evolution issues.

  6. Greater patient confidence yields greater functional outcomes after primary total shoulder arthroplasty. (United States)

    Styron, Joseph F; Higuera, Carlos A; Strnad, Greg; Iannotti, Joseph P


    Patient satisfaction is increasingly being tied to reimbursement rates, and patient satisfaction is often associated with improving functionality and decreasing disability postoperatively. This study sought to determine if a total shoulder arthroplasty patient's preoperative confidence in his or her ability to attain the level of activity desired would influence postoperative functional scores. Patients undergoing a primary total shoulder arthroplasty at a single institution were asked to complete a preoperative questionnaire with multiple items including baseline symptom severity measures and their confidence in reaching their level of desired functionality postoperatively (scored 0-10). Patients then completed an identical postoperative questionnaire at their follow-up visits. Associations between the patient's confidence in attaining treatment goals and functional outcomes was established by multiple linear regression models that were adjusted for gender, age, body mass index, baseline 12-Item Short Form Health Survey mental component scores, college education, smoking status, baseline functional scores, and length of follow-up. Patients had a high level of confidence that their outcome would match their expectations, with an average score of 7.8 (range, 0-10; 28.4% reported a full 10/10 confidence). For every 1-point increase in confidence, patients experienced an average increase in their function score of 2.7 points (P = .039) and improvement in their pain score of 2.0 (P = .033) according to the Penn Shoulder Score. There was no significant association with the patient's 12-Item Short Form Health Survey score postoperatively. Patients with greater preoperative confidence actually have significantly better postoperative functional outcomes than their less confident peers even with adjustment for other known risk factors. Copyright © 2015 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

  7. Subjective Symptom of Visual Display Terminal Syndrome and State Anxiety in Adolescent Smartphone Users

    National Research Council Canada - National Science Library

    Soonjoo Park; Jung-wha Choi


    .... The presence and severity of smartphone addiction, VDTS symptoms, and state anxiety were measured using Korean Smartphone Addiction Proneness Scale, VDTS Questionnaire, and State Anxiety Inventory, respectively...

  8. Screen Codes: Visual Hyperlinks for Displays


    Collomosse, J.; Kindberg, T.


    We present 'Screen codes' - a space- and time-efficient, aesthetically compelling method for transferring data from a display to a camera-equipped mobile device. Screen codes encode data as a grid of luminosity fluctuations within an arbitrary image, displayed on the video screen and decoded on a mobile device. These 'twinkling' images are a form of 'visual hyperlink', by which users can move dynamically generated content to and from their mobile devices. They help bridge the 'content divide'...

  9. Modern Display Technologies for Airborne Applications. (United States)


    cover can be controlled as function * of the background luminance level ( photochromic , electrochromic materials). But at very low light levels, where...UUAUITY DISPLAY (DLA Umask (Aperture pitch *GRAPHIC DISPLAY ROUNDOAPERTURE (Sn 0 03ia02(m MASK AND 00 Biack matrix (S11) pigmented IRS Electron beam gun... soluble in the liquid crystal host to give adequate absorption and contrast without risk of the segregation of dye particles at low temperatures

  10. Bidding for Representative Allocations for Display Advertising


    Ghosh, Arpita; McAfee, Preston; Papineni, Kishore; Vassilvitskii, Sergei


    Display advertising has traditionally been sold via guaranteed contracts -- a guaranteed contract is a deal between a publisher and an advertiser to allocate a certain number of impressions over a certain period, for a pre-specified price per impression. However, as spot markets for display ads, such as the RightMedia Exchange, have grown in prominence, the selection of advertisements to show on a given page is increasingly being chosen based on price, using an auction. As the number of parti...

  11. Online Allocation Rules in Display Advertising


    Shamsi, Davood; Holtan, Marius; Luenberger, Robert; Ye, Yinyu


    Efficient allocation of impressions to advertisers in display advertising has a significant impact on advertisers' utility and the browsing experience of users. The problem becomes particularly challenging in the presence of advertisers with limited budgets as this creates a complex interaction among advertisers in the optimal impression assignment. In this paper, we study online impression allocation in display advertising with budgeted advertisers. That is, upon arrival of each impression, ...

  12. Managing Risk of Bidding in Display Advertising


    Zhang, HaiFeng; Zhang, Weinan; Rong, Yifei; Ren, Kan; Li, Wenxin; Wang, Jun


    In this paper, we deal with the uncertainty of bidding for display advertising. Similar to the financial market trading, real-time bidding (RTB) based display advertising employs an auction mechanism to automate the impression level media buying; and running a campaign is no different than an investment of acquiring new customers in return for obtaining additional converted sales. Thus, how to optimally bid on an ad impression to drive the profit and return-on-investment becomes essential. Ho...

  13. Subjective recovery time after exhausting muscular activity in postpolio and control subjects. (United States)

    Agre, J C; Rodriquez, A A; Franke, T M


    The purpose of this study was to determine whether the time to subjectively fully recover after the performance of exhausting muscular exercise was greater in unstable postpolio as compared with stable postpolio or control subjects. Twenty-five unstable (those complaining of declining muscle strength) postpolio, 16 stable (those denying declining muscle strength) postpolio, and 25 control subjects performed an isometric contraction of the knee extensor (quadriceps femoris) musculature at 40% of maximal torque until they were no longer able to do so. Five-second maximal effort contractions were made every 30 s through 2 min after the time of failure was reached and then at 1-min intervals through 10 min after failure was reached. Subjects reported the duration of time required to subjectively fully recover from this activity. Choices of "less than 1 day," "1 day," "2 days," etc., up to "greater than 2 wk" were given to the subjects for their response. Analysis was by nonparametric ANOVA and appropriate post hoc comparison procedures. Unstable postpolio subjects reported a greater recovery time than either the stable postpolio or control subjects (mean +/- SD of 2.6 +/- 3.0 days, 0.6 +/- 1.0 days, and 0.7 +/- 1.1 days, respectively, P postpolio subjects than stable postpolio or control subjects. The cause for this finding is unknown and requires further investigation.

  14. Oil defect detection of electrowetting display (United States)

    Chiang, Hou-Chi; Tsai, Yu-Hsiang; Yan, Yung-Jhe; Huang, Ting-Wei; Mang, Ou-Yang


    In recent years, transparent display is an emerging topic in display technologies. Apply in many fields just like mobile device, shopping or advertising window, and etc. Electrowetting Display (EWD) is one kind of potential transparent display technology advantages of high transmittance, fast response time, high contrast and rich color with pigment based oil system. In mass production process of Electrowetting Display, oil defects should be found by Automated Optical Inspection (AOI) detection system. It is useful in determination of panel defects for quality control. According to the research of our group, we proposed a mechanism of AOI detection system detecting the different kinds of oil defects. This mechanism can detect different kinds of oil defect caused by oil overflow or material deteriorated after oil coating or driving. We had experiment our mechanism with a 6-inch Electrowetting Display panel from ITRI, using an Epson V750 scanner with 1200 dpi resolution. Two AOI algorithms were developed, which were high speed method and high precision method. In high precision method, oil jumping or non-recovered can be detected successfully. This mechanism of AOI detection system can be used to evaluate the oil uniformity in EWD panel process. In the future, our AOI detection system can be used in quality control of panel manufacturing for mass production.

  15. A new type of multiview display (United States)

    Jurk, Silvio; Kuhlmey, Mathias; de la Barré, René


    The common architecture of multi-view autostereoscopic displays assigns a nominal viewing distance. The design affects the convergence of the visible rays at a nominal viewing distance where diamond shaped viewing zones are created. In contrast to this approach, the authors present a new design strategy departing from the geometric relations of common 3D display designs. They show that a beam emitted from a sub-pixel should be rendered with an individual camera direction determined by an algorithm. This algorithm also uses, besides the parameters of the display design, the desired viewing distance and the allowed increments of the camera angle. This enables very flexible designs of autostereoscopic displays. The main difference from the common multiview display is that its design approach enables a continued viewing zone without the usually diamond shaped sweet spots. The algorithm for controlling the rendering and the multiplexing is generic, as well as for integral and multiview design approaches using an image splitter raster. The paper introduces it for autostereoscopic displays with horizontal parallax.

  16. Display of information in the operating room. (United States)

    Kiefer, Nicholas; Hoeft, Andreas


    The ongoing development of new sensors and parameters for intraoperative monitoring has outpaced the development of display design, leading to a gap between the load of information and the quality of its delivery. This is not a circumstantial problem, as a large portion of critical incidents is attributable to inadequate situation awareness and the failure to recognize readily monitored data. This review also addresses improvements of current threshold alarms. Research has focused on advanced integrated displays, drawing on the findings of human factor science and on the exploitation of alternative sensory pathways. Integrated displays, as well as auditory, vibrotactile and head-mounted displays have been shown to promote situation awareness and reduce cognitive workload. Intelligent alarm design can successfully reduce the number of false alarms. Improvement of the display of information in the operating room is warranted, and recent developments are promising. However, their introduction into mass market is not yet on the horizon, although the shortcomings of the traditional single-sensor-single-indicator principle are known for a long time. If manufacturers are reluctant to implement new techniques into their devices, they should at least facilitate access to monitoring raw data in order to allow independent development of displays.

  17. Menu labels displaying the kilocalorie content or the exercise equivalent: effects on energy ordered and consumed in young adults. (United States)

    James, Ashlei; Adams-Huet, Beverley; Shah, Meena


    Determine the effect of menu labels displaying the energy content of food items or the exercise equivalent on energy ordered and consumed at lunch and energy intake for the remainder of the day in young adults. Subjects were randomized to a menu with no labels (no-labels), menu with kilocalorie labels displaying the energy content of the food items (kcal-labels), or menu with exercise labels displaying the minutes of brisk walking needed to burn the food energy (exercise-labels). The study was conducted in one dining area located in a metabolic kitchen at the Texas Christian University and another located in a residence occupied by graduate students. Of the 300 subjects, 55.7% were female, 77.3% were college students, 88% were white, and 88% were non-Hispanic. Mean body mass index and age were 24.2 ± 4.5 kg/m(2) and 21.9 ± 2.3 years, respectively. All menus contained the same food/beverage choices. Subjects ordered and consumed foods/beverages for lunch from the menu to which they were assigned. Subjects were blinded to study purpose. Energy ordered and consumed at lunch were assessed from the weight of the food ordered and consumed, respectively, and the energy content of the same foods available on the restaurant Web site. Postlunch energy intake was assessed by food recall. Analysis of covariance, adjusted for premeal hunger levels and gender, determined the effect of menu type on energy ordered and consumed and postlunch energy intake. Significant menu effect was observed for energy ordered (p = .008) and consumed (p = .04) at lunch. The exercise-labels group ordered significantly (p = .002) less energy (adjusted mean [confidence intervals]: 763 [703, 824] kcal) at lunch, compared to the no-labels group (902 [840, 963] kcal) but not compared to the kcal-labels group (827 [766, 888] kcal). The exercise-labels group also consumed significantly (p = .01) less energy (673 [620, 725] kcal) at lunch, compared to the no-labels group (770 (717, 823) kcal) but not

  18. Static, dynamic balance and functional performance in subjects with and without plantar fasciitis

    Directory of Open Access Journals (Sweden)

    Geiseane Aguiar Gonçalves

    Full Text Available Abstract Introduction: Plantar fasciitis (PF is characterized by non-inflammatory degeneration and pain under the heel, and is one of the most common foot complaints. The compensations and adjustments made to decrease the discomfort caused by the disease are clinical findings and can be a factor that contributes to impaired balance and decreased functional performance. Objective: To compare functional performance as well as static and dynamic balance among subjects with and without PF. Methods: The sample consisted of 124 subjects of both sexes aged 20-60 years. Participants were divided into two groups: a bilateral PF group (PFG; n = 62 and a control group (CG, n = 62. The following outcomes were analyzed: static and dynamic balance (using functional tests and functional performance (using a questionnaire. We used Student’s t test for independent samples to compare variables between the groups. The alpha error was set at 0.05. Results: Subjects with PF showed greater impairment in their overall dynamic balance performance (p < 0.001 than the control group, except for left posteromedial movement (p = 0.19. The CG showed showed better functional performance (p < 0.001 than the PF group. There was no difference between groups for the variable static balance on stable (p = 0.160 and unstable surfaces (p = 0.085. Conclusion: Subjects with PF displayed smaller reach distances in the overall Star Excursion Balance Test (SEBT, demonstrating a deficit in dynamic balance and functional performance when compared with healthy subjects.

  19. Sports involvement following ACL reconstruction is related to lower extremity neuromuscular adaptations, subjective knee function and health locus of control. (United States)

    Nyland, J; Mauser, N; Caborn, D N M


    This retrospective study compared the influence of perceived sports involvement on lower extremity neuromuscular adaptations during single-leg countermovement jumping (CMJ), perceived knee function and internal health locus of control (HLOC) scores at a minimum 2-year post-anterior cruciate ligament reconstruction. The hypothesis was that subjects with higher-level sports involvement would display significant differences compared to subjects with lower-level sports involvement. Uninvolved and involved lower extremity EMG amplitude (1,000 Hz), vertical ground reaction force (VGRF) (500 Hz) and kinematic (60 Hz) displacement differences were determined during single-leg CMJ. These data and International Knee Documentation Committee subjective knee survey scores, Multidimensional Health Locus of Control Survey internal HLOC subscale scores and sports activity characteristics were compared by sports involvement level. Subjects that regarded themselves as only sporting sometimes (Group 3, n = 26) had lower IKDC survey and internal HLOC scores, were more likely to decrease sports activities by two intensity levels than highly competitive (Group 1, n = 20) and well-trained/frequently sporting (Group 2, n = 24) subjects, and had greater peak landing VGRF differences suggesting decreased involved lower extremity loading compared to Group 2. During propulsion, Group 1 had greater gluteus maximus (GM) and gastrocnemius (G) EMG differences than Groups 2 and 3. Groups 1 and 2 had decreased vastus medialis (VM) EMG differences during propulsion than Group 3. During landing, Group 1 had greater GM and G EMG differences than Group 3. Subjects with higher-level sports involvement up-regulated involved lower extremity GM and G activation and down-regulated VM activation. This adaptation may enable continued higher-level sports participation while minimizing knee joint forces. Perceived higher-level sports involvement was related to neuromuscular adaptations, better subjective knee

  20. Evolution Of Map Display Optical Systems (United States)

    Boot, Alan


    It is now over 20 years since Ferranti plc introduced optically projected map displays into operational aircraft navigation systems. Then, as now, it was the function of the display to present an image of a topographical map to a pilot or navigator with his present position clearly identified. Then, as now, the map image was projected from a reduced image stored on colour micro film. Then, as now, the fundamental design problems are the same.In the exposed environment of an aircraft cockpit where brightness levels may vary from those associated with direct sunlight on the one hand, to starlight on the other, how does one design an optical system with sufficient luminance, contrast and resolution where in the daytime sunlight may fall on the display or in the pilot's eyes, and at night time the display luminance must not detract from the pilot's ability to pick up external clues? This paper traces the development of Ferranti plc optically projected map displays from the early V Bomber and the ill-fated TSR2 displays to the Harrier and Concorde displays. It then goes on to the development of combined map and electronic displays (COMED), showing how an earlier design, as fitted to Tornado, has been developed into the current COMED design which is fitted to the F-18 and Jaguar aircraft. In each of the above display systems particular features of optical design interest are identified and their impact on the design as a whole are discussed. The use of prisms both for optical rotation and translation, techniques for the maximisation of luminance, the problems associated with contrast enhancement, particularly with polarising filters in the presence of optically active materials, the use of aerial image combining systems and the impact of the pilot interface on the system parameter are all included.Perhaps the most interesting result in considering the evolution of map displays has not been so much the designer's solutions in overcoming the various design problems but

  1. Characterizing the reflectivity of handheld display devices. (United States)

    Liu, Peter; Badano, Aldo


    With increased use of handheld and tablet display devices for viewing medical images, methods for consistently measuring reflectivity of the devices are needed. In this note, the authors report on the characterization of diffuse reflections for handheld display devices including mobile phones and tablets using methods recommended by the American Association of Physicists in Medicine Task Group 18 (TG18). The authors modified the diffuse reflectance coefficient measurement method outlined in the TG18 report. The authors measured seven handheld display devices (two phones and five tablets) and three workstation displays. The device was attached to a black panel with Velcro. To study the effect of the back surface on the diffuse reflectance coefficient, the authors created Styrofoam masks with different size square openings and placed it in front of the device. Overall, for each display device, measurements of illuminance and reflected luminance on the display screen were taken. The authors measured with no mask, with masks of varying size, and with display-size masks, and calculated the corresponding diffuse reflectance coefficient. For all handhelds, the diffuse reflectance coefficient measured with no back panel were lower than measurements performed with a mask. The authors found an overall increase in reflectivity as the size of the mask decreases. For workstations displays, diffuse reflectance coefficients were higher when no back panel was used, and higher than with masks. In all cases, as luminance increased, illuminance increased, but not at the same rate. Since the size of handheld displays is smaller than that of workstation devices, the TG18 method suffers from a dependency on illumination condition. The authors show that the diffuse reflection coefficients can vary depending on the nature of the back surface of the illuminating box. The variability in the diffuse coefficient can be as large as 20% depending on the size of the mask. For all measurements

  2. A subjective scheduler for subjective dedicated networks (United States)

    Suherman; Fakhrizal, Said Reza; Al-Akaidi, Marwan


    Multiple access technique is one of important techniques within medium access layer in TCP/IP protocol stack. Each network technology implements the selected access method. Priority can be implemented in those methods to differentiate services. Some internet networks are dedicated for specific purpose. Education browsing or tutorial video accesses are preferred in a library hotspot, while entertainment and sport contents could be subjects of limitation. Current solution may use IP address filter or access list. This paper proposes subjective properties of users or applications are used for priority determination in multiple access techniques. The NS-2 simulator is employed to evaluate the method. A video surveillance network using WiMAX is chosen as the object. Subjective priority is implemented on WiMAX scheduler based on traffic properties. Three different traffic sources from monitoring video: palace, park, and market are evaluated. The proposed subjective scheduler prioritizes palace monitoring video that results better quality, xx dB than the later monitoring spots.

  3. Display device-adapted video quality-of-experience assessment (United States)

    Rehman, Abdul; Zeng, Kai; Wang, Zhou


    Today's viewers consume video content from a variety of connected devices, including smart phones, tablets, notebooks, TVs, and PCs. This imposes significant challenges for managing video traffic efficiently to ensure an acceptable quality-of-experience (QoE) for the end users as the perceptual quality of video content strongly depends on the properties of the display device and the viewing conditions. State-of-the-art full-reference objective video quality assessment algorithms do not take into account the combined impact of display device properties, viewing conditions, and video resolution while performing video quality assessment. We performed a subjective study in order to understand the impact of aforementioned factors on perceptual video QoE. We also propose a full reference video QoE measure, named SSIMplus, that provides real-time prediction of the perceptual quality of a video based on human visual system behaviors, video content characteristics (such as spatial and temporal complexity, and video resolution), display device properties (such as screen size, resolution, and brightness), and viewing conditions (such as viewing distance and angle). Experimental results have shown that the proposed algorithm outperforms state-of-the-art video quality measures in terms of accuracy and speed.

  4. Monocular display unit for 3D display with correct depth perception (United States)

    Sakamoto, Kunio; Hosomi, Takashi


    A study of virtual-reality system has been popular and its technology has been applied to medical engineering, educational engineering, a CAD/CAM system and so on. The 3D imaging display system has two types in the presentation method; one is a 3-D display system using a special glasses and the other is the monitor system requiring no special glasses. A liquid crystal display (LCD) recently comes into common use. It is possible for this display unit to provide the same size of displaying area as the image screen on the panel. A display system requiring no special glasses is useful for a 3D TV monitor, but this system has demerit such that the size of a monitor restricts the visual field for displaying images. Thus the conventional display can show only one screen, but it is impossible to enlarge the size of a screen, for example twice. To enlarge the display area, the authors have developed an enlarging method of display area using a mirror. Our extension method enables the observers to show the virtual image plane and to enlarge a screen area twice. In the developed display unit, we made use of an image separating technique using polarized glasses, a parallax barrier or a lenticular lens screen for 3D imaging. The mirror can generate the virtual image plane and it enlarges a screen area twice. Meanwhile the 3D display system using special glasses can also display virtual images over a wide area. In this paper, we present a monocular 3D vision system with accommodation mechanism, which is useful function for perceiving depth.

  5. Modeling the leakage of LCD displays with local backlight for quality assessment

    DEFF Research Database (Denmark)

    Mantel, Claire; Korhonen, Jari; Pedersen, Jesper M.


    The recent technique of local backlight dimming has a significant impact on the quality of images displayed with a LCD screen with LED local dimming. Therefore it represents a necessary step in the quality assessment chain, independently from the other processes applied to images. This paper...... on videos displayed on LCD TV with local backlight dimming viewed from a 0° and 15° angles. The subjective results are then compared objective data using different leakage models: constant over the whole display or horizontally varying and three leakage factor (no leakage, measured at 0° and 15...

  6. Comparison of medical-grade and calibrated consumer-grade displays for diagnosis of subtle bone fissures. (United States)

    Pinto Dos Santos, Daniel; Welter, Jonas; Emrich, Tilman; Jungmann, Florian; Dappa, Evelyn; Mildenberger, Peter; Kloeckner, Roman


    To compare the diagnostic accuracy of medical-grade and calibrated consumer-grade digital displays for the detection of subtle bone fissures. Three experienced radiologists assessed 96 digital radiographs, 40 without and 56 with subtle bone fissures, for the presence or absence of fissures in various bones using one consumer-grade and two medical-grade displays calibrated according to the DICOM-Grayscale Standard Display Function. The reference standard was consensus reading. Subjective image quality was also assessed by the three readers. Statistical analysis was performed using receiver operating characteristic analysis and by calculating the sensitivity, specificity, and Youden's J for each combination of reader and display. Cohen's unweighted kappa was calculated to assess inter-rater agreement. Subjective image quality was compared using the Wilcoxon signed-rank test. No significant differences were found for the assessment of subjective image quality. Diagnostic performance was similar across all readers and displays, with Youden's J ranging from 0.443 to 0.661. The differences were influenced more by the reader than by the display used for the assessment. No significant differences were found between medical-grade and calibrated consumer-grade displays with regard to their diagnostic performance in assessing subtle bone fissures. Calibrated consumer-grade displays may be sufficient for most radiological examinations. • Diagnostic performance of calibrated consumer-grade displays is comparable to medical-grade displays. • There is no significant difference with regard to subjective image quality. • Use of calibrated consumer-grade displays could cut display costs by 60-80%.

  7. The complex role of perceptual organization in visual display design theory. (United States)

    Sanderson, P M; Haskell, I; Flach, J M


    Two experiments were performed to test and extend the current 'emergent features' approach to display design for dynamic failure detection tasks. It was predicted that a display whose emergent features were well-mapped to goal-relevant task invariants would lead to better failure detection performance than either of two alternative displays. Contrary to prediction. Experiment 1 showed no differences in failure detection speed or accuracy across displays. The reason for this may have been that subjects did not discover the mapping between the mathematical properties of the task and the emergent feature, so in Experiment 2 subjects were explicitly instructed about the mapping and were advised on how to use the display geometry to help their performance. A significant difference in failure detection speed emerged, but the display supporting fastest performance was not the one with the well-mapped emergent feature. These results suggest that alternative perceptual organizational factors were at work which overpowered the intended effect. The results also underscore the difficulty of developing a theory of display design, and their impact on current theories is outlined.

  8. Affective three-dimensional brain-computer interface created using a prism array-based display (United States)

    Mun, Sungchul; Park, Min-Chul


    To avoid the vergence-accommodation mismatch and provide a strong sense of presence to users, we applied a prism array-based display when presenting three-dimensional (3-D) objects. Emotional pictures were used as visual stimuli to increase the signal-to-noise ratios of steady-state visually evoked potentials (SSVEPs) because involuntarily motivated selective attention by affective mechanisms can enhance SSVEP amplitudes, thus producing increased interaction efficiency. Ten male and nine female participants voluntarily participated in our experiments. Participants were asked to control objects under three viewing conditions: two-dimension (2-D), stereoscopic 3-D, and prism. The participants performed each condition in a counter-balanced order. One-way repeated measures analysis of variance showed significant increases in the positive predictive values in the prism condition compared to the 2-D and 3-D conditions. Participants' subjective ratings of realness and engagement were also significantly greater in the prism condition than in the 2-D and 3-D conditions, while the ratings for visual fatigue were significantly reduced in the prism condition than in the 3-D condition. The proposed methods are expected to enhance the sense of reality in 3-D space without causing critical visual fatigue. In addition, people who are especially susceptible to stereoscopic 3-D may be able to use the affective brain-computer interface.

  9. Tactile display with dielectric multilayer elastomer actuatorsq (United States)

    Matysek, Marc; Lotz, Peter; Schlaak, Helmut F.


    Tactile perception is the human sensation of surface textures through the vibrations generated by stroking a finger over the surface. The skin responds to several distributed physical quantities. Perhaps the most important are high-frequency vibrations, pressure distributions (static shape) and thermal properties. The integration of tactile displays in man-machine interfaces promises a more intuitive handling. For this reason many tactile displays are developed using different technologies. We present several state-of-the-art tactile displays based on different types of dielectric elastomer actuators to clarify the advantages of our matrix display based on multilayer technology. Using this technology perpendicular and hexagonal arrays of actuator elements (tactile stimulators) can be integrated into a PDMS substrate. Element diameters down to 1 mm allow stimuli at the range of the human two-point-discrimination threshold. Driving the elements by column and row addressing enables various stimulation patterns with a reduced number of feeding lines. The transient analysis determines charging times of the capacitive actuators depending on actuator geometry and material parameters. This is very important to ensure an adequate dynamic characteristic of the actuators to stimulate the human skin by vibrations. The suitability of multilayer dielectric elastomer actuators for actuation in tactile displays has been determined. Beside the realization of a static tactile display - where multilayer DEA are integrated as drives for movable contact pins - we focus on the direct use of DEA as a vibrotactile display. Finally, we present the scenario and achieved results of a recognition threshold test. Even relative low voltages in the range of 800 V generate vibrations with 100% recognition ratio within the group of participants. Furthermore, the frequency dependent characteristic of the determined recognition threshold confirms with established literature.

  10. MEMS tactile display: from fabrication to characterization (United States)

    Miki, Norihisa; Kosemura, Yumi; Watanabe, Junpei; Ishikawa, Hiroaki


    We report fabrication and characterization of MEMS-based tactile display that can display users various tactile information, such as Braille codes and surface textures. The display consists of 9 micro-actuators that are equipped with hydraulic displacement amplification mechanism (HDAM) to achieve large enough displacement to stimulate the human tactile receptors. HDAM encapsulates incompressible liquids. We developed a liquid encapsulation process, which we termed as Bonding-in-Liquid Technique, where bonding with a UV-curable resin in glycerin is conducted in the liquid, which prevented interfusion of air bubbles and deformation of the membrane during the bonding. HDAM successfully amplified the displacement generated by piezoelectric actuators by a factor of 6. The display could virtually produce "rough" and "smooth" surfaces, by controlling the vibration frequency, displacement, and the actuation periods of an actuator until the adjacent actuator was driven. We introduced a sample comparison method to characterize the surfaces, which involves human tactile sensation. First, we prepared samples whose mechanical properties are known. We displayed a surface texture to the user by controlling the parameters and then, the user selects a sample that has the most similar surface texture. By doing so, we can correlate the parameters with the mechanical properties of the sample as well as find the sets of the parameters that can provide similar tactile information to many users. The preliminary results with respect to roughness and hardness is presented.

  11. Imaging display method for airborne oceanographic LIDAR (United States)

    Davis, Jon P.; Keck, Timothy; Umehara, Michael J.


    Typical airborne Light Detection and Ranging (LIDAR) used for oceanographic measurements collect data at rates in the range of 1 Megabyte per second. This paper presents a method for organizing and displaying this great bulk of data to allow screening for areas of interest. In addition, this method can be transferred to dedicated hardware, to provide a 100% real time data display system at a reasonable cost. A typical airborne LIDAR system contains a scanning transceiver, and digitizes returned waveforms as the aircraft ffies some search pattern. Thus the data is inherently four dimensional (intensity and three spatial dimensions). This method reliesupon collapsing the four dimensional data into three dimensions; color and X,Y screen coordinates. This is doneby translating depth into an RGB color mix, and return intensity into RGB intensity. Thus color represents depth, and brightness represents signal strength. This data is then displayed on a high resolution color display. In order for this to be successful, some preprocessing is necessary to normalize the waveforms, so that changes in the displayreflect changes in the water column. In addition, some digital filtering is beneficial to increase the signal to noise ratio. This system is currentlyimplemented in Greenhills 'C' under CLIX (UnixVport toClipper) running on a Zaiaz 933 compute engine, with RASIL graphics software package on a Zaiaz FB 640 Graphics frame buffer. This hardware provides 5 MIPS average execution rate and 16.7 million colors on a 768 x 576 pixel display.

  12. Color dependence with horizontal-viewing angle and colorimetric characterization of two displays using different backlighting (United States)

    Castro, José J.; Pozo, Antonio M.; Rubiño, Manuel


    In this work we studied the color dependence with a horizontal-viewing angle and colorimetric characterization of two liquid-crystal displays (LCD) using two different backlighting: Cold Cathode Fluorescent Lamps (CCFLs) and light-emitting diodes (LEDs). The LCDs studied had identical resolution, size, and technology (TFT - thin film transistor). The colorimetric measurements were made with the spectroradiometer SpectraScan PR-650 following the procedure recommended in the European guideline EN 61747-6. For each display, we measured at the centre of the screen the chromaticity coordinates at horizontal viewing angles of 0, 20, 40, 60 and 80 degrees for the achromatic (A), red (R), green (G) and blue (B) channels. Results showed a greater color-gamut area for the display with LED backlight, compared with the CCFL backlight, showing a greater range of colors perceptible by human vision. This color-gamut area diminished with viewing angle for both displays. Higher differences between trends for viewing angles were observed in the LED-backlight, especially for the R- and G-channels, demonstrating a higher variability of the chromaticity coordinates with viewing angle. The best additivity was reached by the LED-backlight display (a lower error percentage). LED-backlight display provided better color performance of visualization.

  13. Perceptual limitations of peripherally displayed colors on CRTs (United States)

    Ancman, Eileen G.


    Cathode ray tubes are currently used in aircraft cockpits to relay important color coded information necessary for mission completion and pilot survival. Color CRT's presently used are as large as 6 x 6 inch, but are projected to increase in size until the all glass cockpit is achieved. As the display gets larger, peripheral vision may be relied upon even more heavily. Peripheral vision is also important in present situations involving more than one CRT display used in a row, and especially when the pilot is in a head-up mode. The research in this report dealt with a subject's ability to recognize in their peripheral vision the three primary colors, blue, green, and red, on a cathode ray tube (CRT) with all three guns adjusted to achieve equal luminance. Data for various subject psychological states (normal, stressed, and relaxed) was collected. Percent error (e.g., how many times red was perceived as green or blue) was recorded for each state and color. A second performance measure, visual field dimension (e.g., degrees off of fovea where the color of the circle was correctly perceived) along the x-axis, was also collected for each color and psychological state.

  14. Measuring visual discomfort associated with 3D displays (United States)

    Lambooij, M.; Fortuin, M.; Ijsselsteijn, W. A.; Heynderickx, I.


    Some people report visual discomfort when watching 3D displays. For both the objective measurement of visual fatigue and the subjective measurement of visual discomfort, we would like to arrive at general indicators that are easy to apply in perception experiments. Previous research yielded contradictory results concerning such indicators. We hypothesize two potential causes for this: 1) not all clinical tests are equally appropriate to evaluate the effect of stereoscopic viewing on visual fatigue, and 2) there is a natural variation in susceptibility to visual fatigue amongst people with normal vision. To verify these hypotheses, we designed an experiment, consisting of two parts. Firstly, an optometric screening was used to differentiate participants in susceptibility to visual fatigue. Secondly, in a 2×2 within-subjects design (2D vs 3D and two-view vs nine-view display), a questionnaire and eight optometric tests (i.e. binocular acuity, fixation disparity with and without fusion lock, heterophoria, convergent and divergent fusion, vergence facility and accommodation response) were administered before and immediately after a reading task. Results revealed that participants found to be more susceptible to visual fatigue during screening showed a clinically meaningful increase in fusion amplitude after having viewed 3D stimuli. Two questionnaire items (i.e., pain and irritation) were significantly affected by the participants' susceptibility, while two other items (i.e., double vision and sharpness) were scored differently between 2D and 3D for all participants. Our results suggest that a combination of fusion range measurements and self-report is appropriate for evaluating visual fatigue related to 3D displays.

  15. Do subjects with minimal motor features have prodromal PD? (United States)

    Chu, Yaping; Buchman, Aron S; Olanow, C W; Kordower, Jeffrey H


    Understanding the pathological changes underlying mild motor features of the eldery and defining a patient population with prodromal Parkinson's disease (PD) are of great clinical importance. It remains unclear, however, how to accurately and specifically diagnose prodromal PD. We examined whether older adults with minimal parkinsonian motor features have nigrostriatal degeneration and α-synuclein pathology consistent with prodromal PD. Brain sections were obtained from older adults with a clinical diagnosis of PD (N=21) and without a clinical diagnosis of PD (N=27) who underwent motor examination proximate to death. Cases without PD were further dichotomized into no motor deficit (n=9) or minimal motor features (n-18) groups using a modified Unified Parkinson's Disease Rating Scale. We performed quantitative unbiased stereological analyses of dopaminergic neurons/terminals and α-synuclein accumulation in the nigrostriatal system. In all subjects with minimal motor features, there were significant reductions in dopaminergic neurons and terminals in the substantia nigra and putamen that was intermediate between subjects with no motor deficit and PD. Phosphorylated α-synuclein inclusions were observed in the substantia nigra that were of similar density to what was seen in PD. Furthermore, there was greater Lewy neuritic pathology in the putamen relative to PD patients. Lastly, neurons with α-synuclein inclusions displayed reductions in tyrosine hydroxylase expression that was comparable in subjects with both minimal motor features and PD. Minimal motor features in older adults may represent prodromal PD and identify at risk individuals for testing putative neuroprotective interventions that could slow or prevent PD progression. This article is protected by copyright. All rights reserved. © 2018 American Neurological Association.

  16. 40 CFR 26.405 - Observational research involving greater than minimal risk but presenting the prospect of direct... (United States)


    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Observational research involving... SUBJECTS Observational Research: Additional Protections for Children Involved as Subjects in Observational Research Conducted or Supported by EPA § 26.405 Observational research involving greater than minimal risk...

  17. 21 CFR 50.53 - Clinical investigations involving greater than minimal risk and no prospect of direct benefit to... (United States)


    ... 21 Food and Drugs 1 2010-04-01 2010-04-01 false Clinical investigations involving greater than... knowledge about the subjects' disorder or condition. 50.53 Section 50.53 Food and Drugs FOOD AND DRUG... knowledge about the subjects' disorder or condition that is of vital importance for the understanding or...

  18. Increased substance P expression in the trochanteric bursa of patients with greater trochanteric pain syndrome. (United States)

    Fearon, Angela Margaret; Twin, Jane; Dahlstrom, Jane E; Cook, Jill L; Cormick, Wes; Smith, Paul N; Scott, Alexander


    Greater trochanteric pain syndrome (GTPS) is a pathology that can involve the trochanteric bursa or the tendons which attach to the greater trochanter. To clarify the potential importance of bursa versus tendon pathology and of substance P (SP) in contributing to pain in this condition tendon and bursa tissue biopsies were obtained from 34 patients with GTPS and 29 control subjects. Specimens were evaluated via light microscopy for histopathological and morphological differences, as well as using immunohistochemistry for macrophages (CD68), inflammatory cells (CD45) and SP. Bursa [stroma score, mean (SD): 4.18 (1.65) vs. 2.53 (1.61), p = 0.051] and tendon [Bonar score, mean (SD): GTPS mean (SD) 12.65 (2.0), control (10.43 (4.84), p = 0.04] from subjects with GTPS demonstrated more extensive signs of pathology than specimens from control subjects. There was a significantly greater presence of SP in the bursa (frequency: 9/12 vs. 6/16, p = 0.047), but not in the tendon (8/12 vs. 8/15, p = 0.484) of subjects with GTPS compared to controls. An increased presence of SP in the trochanteric bursa may be related to the pain associated with GTPS.

  19. Quality of Experience for Large Ultra-High-Resolution Tiled Displays with Synchronization Mismatch

    Directory of Open Access Journals (Sweden)

    Deshpande Sachin


    Full Text Available This paper relates to quality of experience when viewing images, video, or other content on large ultra-high-resolution displays made from individual display tiles. We define experiments to measure vernier acuity caused by synchronization mismatch for moving images. The experiments are used to obtain synchronization mismatch acuity threshold as a function of object velocity and as a function of occlusion or gap width. Our main motivation for measuring the synchronization mismatch vernier acuity is its relevance in the application of tiled display systems, which create a single contiguous image using individual discrete panels arranged in a matrix with each panel utilizing a distributed synchronization algorithm to display parts of the overall image. We also propose a subjective assessment method for perception evaluation of synchronization mismatch for large ultra-high-resolution tiled displays. For this, we design a synchronization mismatch measurement test video set for various tile configurations for various interpanel synchronization mismatch values. The proposed method for synchronization mismatch perception can evaluate tiled displays with or without tile bezels. The results from this work can help during design of low-cost tiled display systems, which utilize distributed synchronization mechanisms for a contiguous or bezeled image display.

  20. Interacting on and around Large Displays

    DEFF Research Database (Denmark)

    Markussen, Anders

    Over the past two decades, interactions on and around large high-resolution displays have gained increasing levels of attention in research and in practice. This thesis explores and compares interaction techniques for large displays that operate up-close and at a distance. More specifically......, the focus of this thesis is on three aspects of large display interactions: (1) Improved Mid-Air Text Entry; (2) Improved Understanding of Input Modalities; and (3) Extended Boundaries of Interaction. To improve support for mid-air text entry, Paper 1 conducted a design space analysis, and three mid...... for text entry. However, future work could potentially increase text entry rates of the mid-air keyboard by studying and identifying the specific properties that resulted in the performance benefits of the touch-based keyboard. Paper 3 also proposed the Back Of the Hand (BOH) as a novel interaction...

  1. Display design strategy for condition monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Paulsen, Jette Lundtang


    This report describes the development of a strategy for interface design for process plants. The strategy is based on methods from risk analysis to elicit the problems in the plant. In the present work the strategy has been used on a condenser and a high pressure preheater. The test of the strategy in this work focuses on the condition of systems, but could as well focus on functions of the plant. The report further describes from which sources knowledge about the plant can be extracted. A display for supervision of the condenser condition has been tested on a nuclear power plant, a gas fired power plant and the HAMBO simulator(HAMlab BOiling water reactor). A pre-heater display is still under development, but has been tested on a PC display, replaying data collected at the HAMBO simulator. (Author)

  2. Druid, event display for the linear collider

    CERN Document Server

    Ruan, M; Musat, G; Jeans, D; Pande, J


    Druid is a dedicated event display designed for the future e +e − linear colliders. Druid takes standard linear collider data files and detector geometry description files as input, it can visualize both physics event and detector geometry. Many displaying options are provided by Druid, giving easy access to different information. As a versatile event display, Druid supports all the latest linear collider detector models, Silicon Detector and International Large Detector, as well as the calorimeter prototypes operated in the CALICE test beam experiments. It has been utilized in many studies such as the verification of detector geometry, analysis of the simulated full events and test beam data as well as reconstruction algorithm development and code debugging.

  3. Characterising laser beams with liquid crystal displays (United States)

    Dudley, Angela; Naidoo, Darryl; Forbes, Andrew


    We show how one can determine the various properties of light, from the modal content of laser beams to decoding the information stored in optical fields carrying orbital angular momentum, by performing a modal decomposition. Although the modal decomposition of light has been known for a long time, applied mostly to pattern recognition, we illustrate how this technique can be implemented with the use of liquid-crystal displays. We show experimentally how liquid crystal displays can be used to infer the intensity, phase, wavefront, Poynting vector, and orbital angular momentum density of unknown optical fields. This measurement technique makes use of a single spatial light modulator (liquid crystal display), a Fourier transforming lens and detector (CCD or photo-diode). Such a diagnostic tool is extremely relevant to the real-time analysis of solid-state and fibre laser systems as well as mode division multiplexing as an emerging technology in optical communication.

  4. Speckle suppression in scanning laser display. (United States)

    Yurlov, Victor; Lapchuk, Anatoly; Yun, Sangkyeong; Song, Jonghyeong; Yang, Haengseok


    The theory of speckle noise in a scanning beam is presented. The general formulas for the calculation of speckle contrast, which apply to any scanning display, are obtained. It is shown that the main requirement for successful speckle suppression in a scanning display is a narrow autocorrelation peak and low sidelobe level in the autocorrelation function of the complex amplitude distribution across a scanning light beam. The simple formulas for speckle contrast for a beam with a narrow autocorrelation function peak were obtained. It was shown that application of a diffractive optical element (DOE) with a Barker code phase shape could use only natural display scanning motion for speckle suppression. DOE with a Barker code phase shape has a small size and may be deposited on the light modulator inside the depth of the focus of the reflected beam area, and therefore, it does not need an additional image plane and complicated relay optics.

  5. High performance visual display for HENP detectors

    CERN Document Server

    McGuigan, M; Spiletic, J; Fine, V; Nevski, P


    A high end visual display for High Energy Nuclear Physics (HENP) detectors is necessary because of the sheer size and complexity of the detector. For BNL this display will be of special interest because of STAR and ATLAS. To load, rotate, query, and debug simulation code with a modern detector simply takes too long even on a powerful work station. To visualize the HENP detectors with maximal performance we have developed software with the following characteristics. We develop a visual display of HENP detectors on BNL multiprocessor visualization server at multiple level of detail. We work with general and generic detector framework consistent with ROOT, GAUDI etc, to avoid conflicting with the many graphic development groups associated with specific detectors like STAR and ATLAS. We develop advanced OpenGL features such as transparency and polarized stereoscopy. We enable collaborative viewing of detector and events by directly running the analysis in BNL stereoscopic theatre. We construct enhanced interactiv...

  6. WISP information display system user's manual (United States)

    Alley, P. L.; Smith, G. R.


    The wind shears program (WISP) supports the collection of data on magnetic tape for permanent storage or analysis. The document structure provides: (1) the hardware and software configuration required to execute the WISP system and start up procedure from a power down condition; (2) data collection task, calculations performed on the incoming data, and a description of the magnetic tape format; (3) the data display task and examples of displays obtained from execution of the real time simulation program; and (4) the raw data dump task and examples of operator actions required to obtained the desired format. The procedures outlines herein will allow continuous data collection at the expense of real time visual displays.

  7. Software Verification of Orion Cockpit Displays (United States)

    Biswas, M. A. Rafe; Garcia, Samuel; Prado, Matthew; Hossain, Sadad; Souris, Matthew; Morin, Lee


    NASA's latest spacecraft Orion is in the development process of taking humans deeper into space. Orion is equipped with three main displays to monitor and control the spacecraft. To ensure the software behind the glass displays operates without faults, rigorous testing is needed. To conduct such testing, the Rapid Prototyping Lab at NASA's Johnson Space Center along with the University of Texas at Tyler employed a software verification tool, EggPlant Functional by TestPlant. It is an image based test automation tool that allows users to create scripts to verify the functionality within a program. A set of edge key framework and Common EggPlant Functions were developed to enable creation of scripts in an efficient fashion. This framework standardized the way to code and to simulate user inputs in the verification process. Moreover, the Common EggPlant Functions can be used repeatedly in verification of different displays.

  8. Keratinocyte specific markers isolated using phage display

    DEFF Research Database (Denmark)

    Jensen, K.B.; Jensen, Ole Nørregaard; Ravn, P.


    Specific molecular markers for various normal and pathogenic cell states and cell types provide knowledge of basic biological systems and have a direct application in targeted therapy. We describe a proteomic method based on the combination of new and improved phage display antibody technologies...... display method was applied to analysis of human skin keratinocytes resulting in the isolation of a panel of antibodies. Fourteen of these antibodies were further characterized, half of which predominantly recognized keratinocytes in a screen of a range of different cell types. Three cognate keratinocyte...... antigens were subsequently identified by mass spectrometry as laminin-5, plectin, and fibronectin. The combination of phage display technology with mass spectrometry methods for protein identification is a general and promising approach for proteomic analysis of cell surface complexity....

  9. Pilot Preferences on Displayed Aircraft Control Variables (United States)

    Trujillo, Anna C.; Gregory, Irene M.


    The experiments described here explored how pilots want available maneuver authority information transmitted and how this information affects pilots before and after an aircraft failure. The aircraft dynamic variables relative to flight performance were narrowed to energy management variables. A survey was conducted to determine what these variables should be. Survey results indicated that bank angle, vertical velocity, and airspeed were the preferred variables. Based on this, two displays were designed to inform the pilot of available maneuver envelope expressed as bank angle, vertical velocity, and airspeed. These displays were used in an experiment involving control surface failures. Results indicate the displayed limitations in bank angle, vertical velocity, and airspeed were helpful to the pilots during aircraft surface failures. However, the additional information did lead to a slight increase in workload, a small decrease in perceived aircraft flying qualities, and no effect on aircraft situation awareness.

  10. Predicted Weather Display and Decision Support Interface for Flight Deck (United States)

    Johnson, Walter W. (Inventor); Wong, Dominic G. (Inventor); Wu, Shu-Chieh (Inventor); Koteskey, Robert W. (Inventor)


    A system and method for providing visual depictions of a predictive weather forecast for in-route vehicle trajectory planning. The method includes displaying weather information on a graphical display, displaying vehicle position information on the graphical display, selecting a predictive interval, displaying predictive weather information for the predictive interval on the graphical display, and displaying predictive vehicle position information for the predictive interval on the graphical display, such that the predictive vehicle position information is displayed relative to the predictive weather information, for in-route trajectory planning.

  11. Interpretation and display of research results

    Directory of Open Access Journals (Sweden)

    Dilip Kumar Kulkarni


    Full Text Available It important to properly collect, code, clean and edit the data before interpreting and displaying the research results. Computers play a major role in different phases of research starting from conceptual, design and planning, data collection, data analysis and research publication phases. The main objective of data display is to summarize the characteristics of a data and to make the data more comprehensible and meaningful. Usually data is presented depending upon the type of data in different tables and graphs. This will enable not only to understand the data behaviour, but also useful in choosing the different statistical tests to be applied.

  12. The perception of emotion from body movement in point-light displays of interpersonal dialogue. (United States)

    Clarke, Tanya J; Bradshaw, Mark F; Field, David T; Hampson, Sarah E; Rose, David


    We examined whether it is possible to identify the emotional content of behaviour from point-light displays where pairs of actors are engaged in interpersonal communication. These actors displayed a series of emotions, which included sadness, anger, joy, disgust, fear, and romantic love. In experiment 1, subjects viewed brief clips of these point-light displays presented the right way up and upside down. In experiment 2, the importance of the interaction between the two figures in the recognition of emotion was examined. Subjects were shown upright versions of (i) the original pairs (dyads), (ii) a single actor (monad), and (iii) a dyad comprising a single actor and his/her mirror image (reflected dyad). In each experiment, the subjects rated the emotional content of the displays by moving a slider along a horizontal scale. All of the emotions received a rating for every clip. In experiment 1, when the displays were upright, the correct emotions were identified in each case except disgust; but, when the displays were inverted, performance was significantly diminished for some emotions. In experiment 2, the recognition of love and joy was impaired by the absence of the acting partner, and the recognition of sadness, joy, and fear was impaired in the non-veridical (mirror image) displays. These findings both support and extend previous research by showing that biological motion is sufficient for the perception of emotion, although inversion affects performance. Moreover, emotion perception from biological motion can be affected by the veridical or non-veridical social context within the displays.

  13. A Laboratory-Based Course in Display Technology (United States)

    Sarik, J.; Akinwande, A. I.; Kymissis, I.


    A laboratory-based class in flat-panel display technology is presented. The course introduces fundamental concepts of display systems and reinforces these concepts through the fabrication of three display devices--an inorganic electroluminescent seven-segment display, a dot-matrix organic light-emitting diode (OLED) display, and a dot-matrix…

  14. 21 CFR 701.10 - Principal display panel. (United States)


    ... 21 Food and Drugs 7 2010-04-01 2010-04-01 false Principal display panel. 701.10 Section 701.10...) COSMETICS COSMETIC LABELING Package Form § 701.10 Principal display panel. The term principal display panel... is most likely to be displayed, presented, shown, or examined under customary conditions of display...

  15. Smaller pupil size and better proofreading performance with positive than with negative polarity displays. (United States)

    Piepenbrock, Cosima; Mayr, Susanne; Buchner, Axel


    The 'positive polarity advantage' describes the fact that reading performance is better for dark text on light background (positive polarity) than for light text on dark background (negative polarity). We investigated the underlying mechanism by assessing pupil size and proofreading performance when reading positive and negative polarity texts. In particular, we tested the display luminance hypothesis which postulates that the typically greater brightness of positive compared to negative polarity displays leads to smaller pupil sizes and, hence, a sharper retinal image and better perception of detail. Indeed, pupil sizes were smaller and proofreading performance was better with positive than with negative polarity displays. The results are compatible with the hypothesis that the positive polarity advantage is an effect of display luminance. Limitations of the study are being discussed.

  16. Reading on LCD vs e-Ink displays: effects on fatigue and visual strain. (United States)

    Siegenthaler, Eva; Bochud, Yves; Bergamin, Per; Wurtz, Pascal


    Most recently light and mobile reading devices with high display resolutions have become popular and they may open new possibilities for reading applications in education, business and the private sector. The ability to adapt font size may also open new reading opportunities for people with impaired or low vision. Based on their display technology two major groups of reading devices can be distinguished. One type, predominantly found in dedicated e-book readers, uses electronic paper also known as e-Ink. Other devices, mostly multifunction tablet-PCs, are equipped with backlit LCD displays. While it has long been accepted that reading on electronic displays is slow and associated with visual fatigue, this new generation is explicitly promoted for reading. Since research has shown that, compared to reading on electronic displays, reading on paper is faster and requires fewer fixations per line, one would expect differential effects when comparing reading behaviour on e-Ink and LCD. In the present study we therefore compared experimentally how these two display types are suited for reading over an extended period of time. Participants read for several hours on either e-Ink or LCD, and different measures of reading behaviour and visual strain were regularly recorded. These dependent measures included subjective (visual) fatigue, a letter search task, reading speed, oculomotor behaviour and the pupillary light reflex. Results suggested that reading on the two display types is very similar in terms of both subjective and objective measures. It is not the technology itself, but rather the image quality that seems crucial for reading. Compared to the visual display units used in the previous few decades, these more recent electronic displays allow for good and comfortable reading, even for extended periods of time. © 2012 The College of Optometrists.

  17. Surgical anatomy of greater occipital nerve and its relation to ...

    African Journals Online (AJOL)

    Introduction: The knowledge of the anatomy of greater occipital nerve and its relation to occipital artery is important for the surgeon. Blockage or surgical release of greater occipital nerve is clinically effective in reducing or eliminating chronic migraine symptoms. Aim: The aim of this research was to study the anatomy of ...


    NARCIS (Netherlands)

    Hudalah, Delik; Viantari, Dimitra; Firman, Tommy; Woltjer, Johan


    Industrial land development has become a key feature of urbanization in Greater Jakarta, one of the largest metropolitan areas in Southeast Asia. Following Suharto's market-oriented policy measures in the late 1980s, private developers have dominated the land development projects in Greater Jakarta.

  19. Strategies for Talent Management: Greater Philadelphia Companies in Action (United States)

    Council for Adult and Experiential Learning (NJ1), 2008


    Human capital is one of the critical issues that impacts the Greater Philadelphia region's ability to grow and prosper. The CEO Council for Growth (CEO Council) is committed to ensuring a steady and talented supply of quality workers for this region. "Strategies for Talent Management: Greater Philadelphia Companies in Action" provides…

  20. Positive Illusions of Preference Consistency: When Remaining Eluded by One's Preferences Yields Greater Subjective Well-Being and Decision Outcomes (United States)

    Wells, Rachael E.; Iyengar, Sheena S.


    Psychological research has repeatedly demonstrated two seemingly irreconcilable human tendencies. People are motivated towards internal consistency, or acting in accordance with stable, self-generated preferences. Simultaneously though, people demonstrate considerable variation in the content of their preferences, often induced by subtle external…

  1. The Need for Greater Support in Academic Writing for PhD Students in Mathematics and Related Subjects


    Silvers, L. J.


    Within the United Kingdom (UK), the graduate student population in mathematics departments seeking to obtain the higher degree of Doctor of Philosophy (PhD) has become increasingly diverse as a result of a number of factors. This student body faces a variety of challenges that raise questions about what provisions universities should provide in order to give these students the greatest chance of a successful completion of their PhD programme.\\ud \\ud In this article I argue that universities s...

  2. Individuals with greater science literacy and education have more polarized beliefs on controversial science topics. (United States)

    Drummond, Caitlin; Fischhoff, Baruch


    Although Americans generally hold science in high regard and respect its findings, for some contested issues, such as the existence of anthropogenic climate change, public opinion is polarized along religious and political lines. We ask whether individuals with more general education and greater science knowledge, measured in terms of science education and science literacy, display more (or less) polarized beliefs on several such issues. We report secondary analyses of a nationally representative dataset (the General Social Survey), examining the predictors of beliefs regarding six potentially controversial issues. We find that beliefs are correlated with both political and religious identity for stem cell research, the Big Bang, and human evolution, and with political identity alone on climate change. Individuals with greater education, science education, and science literacy display more polarized beliefs on these issues. We find little evidence of political or religious polarization regarding nanotechnology and genetically modified foods. On all six topics, people who trust the scientific enterprise more are also more likely to accept its findings. We discuss the causal mechanisms that might underlie the correlation between education and identity-based polarization.

  3. Measuring emotional and cognitive empathy using dynamic, naturalistic, and spontaneous emotion displays. (United States)

    Buck, Ross; Powers, Stacie R; Hull, Kyle S


    Most measures of nonverbal receiving ability use posed expressions as stimuli. As empathy measures, such stimuli lack ecological validity, as the participant is not actually experiencing emotion. An alternative approach uses natural and dynamic displays of spontaneous expressions. The Communication of Affect Receiving Ability Test (CARAT) uses as stimuli spontaneous facial expressions and gestures filmed by an unobtrusive camera of solitary participants responding to emotional images. This article reports the development and initial validation of the CARAT-Spontaneous, Posed, Regulated (CARAT-SPR), which measures both abilities to detect emotion from spontaneous displays (emotion communication accuracy) and to differentiate spontaneous, posed, and regulated displays (expression categorization ability). Although spontaneous displays are natural responses to emotional images, posed displays involve asking the sender to display "as if" responding to a particular sort of image when no image is in fact present (simulation), while Regulated displays involve asking the sender to display "as if" responding to a particular sort of image when an image of opposite valence is in fact present (masking). Expression categorization ability involves judging deception-simulation and masking-and conceptually involves a kind of perspective-taking or cognitive empathy. Emotion communication using spontaneous clips achieved a high level of accuracy and was strongly correlated with ratings of sender expressivity. Expression categorization ability was not significantly correlated with expressivity ratings and was modestly negatively correlated with emotion communication accuracy. In a brief version of the CARAT-SPR, women showed evidence of greater emotion signal detection, whereas men reported greater confidence in expression categorization. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  4. Positive display polarity is particularly advantageous for small character sizes: implications for display design. (United States)

    Piepenbrock, Cosima; Mayr, Susanne; Buchner, Axel


    To test the display luminance hypothesis of the positive polarity advantage and gain insights for display design, the joint effects of display polarity and character size were assessed with a proofreading task Studies have shown that dark characters on light background (positive polarity) lead to better legibility than do light characters on dark background (negative polarity), presumably due to the typically higher display luminance of positive polarity presentations. Participants performed a proofreading task with black text on white background or white text on black background. Texts were presented in four character sizes (8, 10, 12, and 14 pt; corresponding to 0.22 degrees, 0.25 degrees, 0.31 degrees, and 0.34 degrees of vertical visual angle). A positive polarity advantage was observed in proofreading performance. Importantly, the positive polarity advantage linearly increased with decreasing character size. The findings are in line with the assumption that the typically higher luminance of positive polarity displays leads to an improved perception of detail. Application: The implications seem important for the design of text on such displays as those of computers, automotive control and entertainment systems, and smartphones that are increasingly used for the consumption of text-based media and communication. The sizes of these displays are limited, and it is tempting to use small font sizes to convey as much information as possible. Especially with small font sizes, negative polarity displays should be avoided.

  5. Submissive display in young helmeted guineafowl

    African Journals Online (AJOL)


    Jun 4, 1984 ... guardian lightly on the breast and to crawl under the guar- dian (Figure Ib). The reaction of the guardian is often ag- gressive e.g. pecking, trampling and dart chases; but these do not deter the chick. Submissive display may also be given after the guardian or a senior member has threatened the.

  6. Recognition of epoxy with phage displayed peptides. (United States)

    Swaminathan, Swathi; Cui, Yue


    The development of a general approach for non-destructive chemical and biological functionalization of epoxy could expand opportunities for both fundamental studies and creating various device platforms. Epoxy shows unique electrical, mechanical, chemical and biological compatibility and has been widely used for fabricating a variety of devices. Phage display has emerged as a powerful method for selecting peptides that possess enhanced selectivity and binding affinity toward a variety of targets. In this letter, we demonstrate for the first time a powerful yet benign approach for identifying binding motifs to epoxy via comprehensively screened phage displayed peptides. Our results show that the epoxy can be selectively recognized with peptide-displaying phages. Further, along with the development of epoxy-based microstructures; recognition of the epoxy with phage displayed peptides can be specifically localized in these microstructures. We anticipate that these results could open up exciting opportunities in the use of peptide-recognized epoxy in fundamental biochemical recognition studies, as well as in applications ranging from analytical devices, hybrid materials, surface and interface, to cell biology. Copyright © 2013 Elsevier B.V. All rights reserved.

  7. Supramolecular liquid crystal displays : construction and applications

    NARCIS (Netherlands)

    Hoogboom, Joannes Theodorus Valentinus


    This thesis describes chemical methodologies, which can be ued to construct alignment layers for liquid crystal display purposes in a non-clean room environment, by making use of supramolecular chemistry. These techniques are subsequently used to attain control over LCD-properties, both pre- and

  8. Image display device in digital TV (United States)

    Choi, Seung Jong


    Disclosed is an image display device in a digital TV that is capable of carrying out the conversion into various kinds of resolution by using single bit map data in the digital TV. The image display device includes: a data processing part for executing bit map conversion, compression, restoration and format-conversion for text data; a memory for storing the bit map data obtained according to the bit map conversion and compression in the data processing part and image data inputted from an arbitrary receiving part, the receiving part receiving one of digital image data and analog image data; an image outputting part for reading the image data from the memory; and a display processing part for mixing the image data read from the image outputting part and the bit map data converted in format from the a data processing part. Therefore, the image display device according to the present invention can convert text data in such a manner as to correspond with various resolution, carry out the compression for bit map data, thereby reducing the memory space, and support text data of an HTML format, thereby providing the image with the text data of various shapes.

  9. A Conceptual Framework for Ambient Learning Displays

    NARCIS (Netherlands)

    Börner, Dirk; Kalz, Marco; Specht, Marcus


    Börner, D., Kalz, M., & Specht, M. (2010). A Conceptual Framework for Ambient Learning Displays. In B. Chang, T. Hirashima, & H. Ogata (Eds.), Joint Proceedings of the Work-in-Progress Poster and Invited Young Researcher Symposium for the 18th International Conference on Computers in Education (pp.

  10. Appliance Displays: Accessibility Challenges and Proposed Solutions. (United States)

    Fusco, Giovanni; Tekin, Ender; Giudice, Nicholas A; Coughlan, James M


    People who are blind or visually impaired face difficulties using a growing array of everyday appliances because they are equipped with inaccessible electronic displays. We report developments on our "Display Reader" smartphone app, which uses computer vision to help a user acquire a usable image of a display and have the contents read aloud, to address this problem. Drawing on feedback from past and new studies with visually impaired volunteer participants, as well as from blind accessibility experts, we have improved and simplified our user interface and have also added the ability to read seven-segment digit displays. Our system works fully automatically and in real time, and we compare it with general-purpose assistive apps such as Be My Eyes, which recruit remote sighted assistants (RSAs) to answer questions about video captured by the user. Our discussions and preliminary experiment highlight the advantages and disadvantages of fully automatic approaches compared with RSAs, and suggest possible hybrid approaches to investigate in the future.

  11. A Conceptual Framework for Ambient Learning Displays

    NARCIS (Netherlands)

    Börner, Dirk; Kalz, Marco; Specht, Marcus


    Börner, D., Kalz, M., & Specht, M. (2010, 29 November-3 December). A Conceptual Framework for Ambient Learning Displays. Poster presented at the Work-in-Progress Poster and Invited Young Researcher Symposium of the 18th International Conference on Computers in Education, Putrajaya, Malaysia:

  12. Computer based human-centered display system (United States)

    Still, David L. (Inventor); Temme, Leonard A. (Inventor)


    A human centered informational display is disclosed that can be used with vehicles (e.g. aircraft) and in other operational environments where rapid human centered comprehension of an operational environment is required. The informational display integrates all cockpit information into a single display in such a way that the pilot can clearly understand with a glance, his or her spatial orientation, flight performance, engine status and power management issues, radio aids, and the location of other air traffic, runways, weather, and terrain features. With OZ the information is presented as an integrated whole, the pilot instantaneously recognizes flight path deviations, and is instinctively drawn to the corrective maneuvers. Our laboratory studies indicate that OZ transfers to the pilot all of the integrated display information in less than 200 milliseconds. The reacquisition of scan can be accomplished just as quickly. Thus, the time constants for forming a mental model are near instantaneous. The pilot's ability to keep up with rapidly changing and threatening environments is tremendously enhanced. OZ is most easily compatible with aircraft that has flight path information coded electronically. With the correct sensors (which are currently available) OZ can be installed in essentially all current aircraft.

  13. Market trends in the projection display industry (United States)

    Dash, Sweta


    The projection display industry represents a multibillion- dollar market that includes four distinct technologies. High-volume consumer products and high-value business products drive the market, with different technologies being used in different application markets. The consumer market is dominated by rear CRT technology, especially in the projection television segment. But rear LCD (liquid crystal display) and rear reflective (DLP, or Digital Light ProcessingTM) televisions are slowly emerging as future competitors to rear CRT projectors. Front CRT projectors are still popular in the high-end home theater market. Front LCD technology and front DLP technology dominate the business market. Traditional light valve technology was the only solution for applications requiring high light outputs, but new three-chip DLP projectors meet the higher light output requirements at a lower price. In the last few years the strongest growth has been in the business market for multimedia presentation applications. This growth was due to the continued increase in display pixel formats, the continued reduction in projector weight, and the improved price/performance ratio. The projection display market will grow at a significant rate during the next five years, driven by the growth in ultraportable (market to digital and HDTV products.

  14. Display-And-Alarm Circuit For Accelerometer (United States)

    Bozeman, Richard J., Jr.


    Compact accelerometer assembly consists of commercial accelerometer retrofit with display-and-alarm circuit. Provides simple means for technician attending machine to monitor vibrations. Also simpifies automatic safety shutdown by providing local alarm or shutdown signal when vibration exceeds preset level.

  15. Count on It: Congruent Manipulative Displays (United States)

    Morin, Joe; Samelson, Vicki M.


    Representations that create informative visual displays are powerful tools for communicating mathematical concepts. The National Council of Teachers of Mathematics encourages the use of manipulatives (NCTM 2000). Manipulative materials are often used to present initial representations of basic numerical principles to young children, and it is…

  16. 2K radiological image display station (United States)

    Lou, Shyhliang A.; Huang, H. K.; Taira, Ricky K.; Breant, Claudine M.


    We intend to design a 2K display station which can be used in most of the radiology sections. This paper describes how we collected the basic viewing requirements and defined the criteria for designing the 2K display station. Based on the design criteria, hardware components are selected and software modules are implemented. The hardware components in the display station consist of a SUN 470 computer, two 21' diagonal 2K MegaScan monitors, and a 2.6- Gbyte formatted storage concepts parallel transfer disk. The software modules include a communication software module, a local database module, a local storage management module, and an image display module. The station provides features such as dual-cine, region- of-interest, caliper measurement, image retrieval, and diagnostic report. Four stations have been used in genitourinary radiology, pediatric radiology in-patient and out-patient, and neuroradiology since January 1992. The stations are used for morning and afternoon radiology rounds and frequently for consultations between radiologists and clinicians.

  17. Presenting directions with a vibrotactile torso display

    NARCIS (Netherlands)

    Erp, J.B.F. van


    Vibrotactile displays covering the torso present spatial information in an intuitive way since the stimuli are directly mapped to the body coordinates; left is left, front is front, etc. The present study investigated the direction in the horizontal plane to which a specific torso location is mapped

  18. 27 CFR 6.83 - Product displays. (United States)


    ... industry member of giving or selling product displays to a retailer does not constitute a means to induce... (c) of this section are met. (b) Definition. “Product display” means any wine racks, bins, barrels... industry member under paragraph (a) of this section may not exceed $300 per brand at any one time in any...

  19. Advanced manufacturing technologies on color plasma displays (United States)

    Betsui, Keiichi


    The mass production of the color plasma display started from 1996. However, since the price of the panel is still expensive, PDPs are not in widespread use at home. It is necessary to develop the new and low-cost manufacturing technologies to reduce the price of the panel. This paper describes some of the features of new fabrication technologies of PDPs.

  20. Estimating Subjective Probabilities

    DEFF Research Database (Denmark)

    Andersen, Steffen; Fountain, John; Harrison, Glenn W.

    Subjective probabilities play a central role in many economic decisions, and act as an immediate confound of inferences about behavior, unless controlled for. Several procedures to recover subjective probabilities have been proposed, but in order to recover the correct latent probability one must...

  1. Estimating Subjective Probabilities

    DEFF Research Database (Denmark)

    Andersen, Steffen; Fountain, John; Harrison, Glenn W.


    Subjective probabilities play a central role in many economic decisions and act as an immediate confound of inferences about behavior, unless controlled for. Several procedures to recover subjective probabilities have been proposed, but in order to recover the correct latent probability one must ...

  2. Subjective meaning: an introduction

    NARCIS (Netherlands)

    van Wijnbergen-Huitink, Janneke; van Wijbergen-Huitink, Janneke; Meier, Cécile

    This introductory chapter traces some of the considerations on the basis of which relativistic approaches to subjective meaning became en vogue. In doing so, the chapter provides an overview of the relevant linguistic and philosophical issues when developing a treatment of subjectivity. In addition,

  3. Subjective safety in traffic.

    NARCIS (Netherlands)


    The term ‘subjective safety in traffic’ refers to people feeling unsafe in traffic or, more generally, to anxiety regarding being unsafe in traffic for oneself and/or others. Subjective safety in traffic can lead to road users limiting their mobility and social activities, which is one of the

  4. Subjective poverty line definitions

    NARCIS (Netherlands)

    J. Flik; B.M.S. van Praag (Bernard)


    textabstractIn this paper we will deal with definitions of subjective poverty lines. To measure a poverty threshold value in terms of household income, which separates the poor from the non-poor, we take into account the opinions of all people in society. Three subjective methods will be discussed

  5. Delaying rewards has greater effect on altruism when the beneficiary is socially distant. (United States)

    Osiński, Jerzy; Karbowski, Adam


    Based on the assumption that social distance and time are dimensions of psychological distance important for altruistic choices it was predicted that enhancement of altruism due to delaying rewards when choosing between a reward for oneself and for another person would be more pronounced the greater the social distance between the subject and another person. In order to test this hypothesis, social discounting using hypothetical monetary rewards and manipulation of social distance and reward delay was measured in a group of 161 college students. The results indicate that delaying rewards increasingly enhances preference for altruistic choices as the social distance between subject and beneficiary grows.

  6. Advanced Three-Dimensional Display System (United States)

    Geng, Jason


    A desktop-scale, computer-controlled display system, initially developed for NASA and now known as the VolumeViewer(TradeMark), generates three-dimensional (3D) images of 3D objects in a display volume. This system differs fundamentally from stereoscopic and holographic display systems: The images generated by this system are truly 3D in that they can be viewed from almost any angle, without the aid of special eyeglasses. It is possible to walk around the system while gazing at its display volume to see a displayed object from a changing perspective, and multiple observers standing at different positions around the display can view the object simultaneously from their individual perspectives, as though the displayed object were a real 3D object. At the time of writing this article, only partial information on the design and principle of operation of the system was available. It is known that the system includes a high-speed, silicon-backplane, ferroelectric-liquid-crystal spatial light modulator (SLM), multiple high-power lasers for projecting images in multiple colors, a rotating helix that serves as a moving screen for displaying voxels [volume cells or volume elements, in analogy to pixels (picture cells or picture elements) in two-dimensional (2D) images], and a host computer. The rotating helix and its motor drive are the only moving parts. Under control by the host computer, a stream of 2D image patterns is generated on the SLM and projected through optics onto the surface of the rotating helix. The system utilizes a parallel pixel/voxel-addressing scheme: All the pixels of the 2D pattern on the SLM are addressed simultaneously by laser beams. This parallel addressing scheme overcomes the difficulty of achieving both high resolution and a high frame rate in a raster scanning or serial addressing scheme. It has been reported that the structure of the system is simple and easy to build, that the optical design and alignment are not difficult, and that the

  7. Pilot stereotypes for navigation symbols on electronic displays (United States)


    There is currently no common symbology standard for the : electronic display of navigation information. The wide : range of display technologies and the different functions : these displays support make it difficult to design symbols : that are easil...

  8. Spatial constraints of stereopsis in video displays (United States)

    Schor, Clifton


    Recent development in video technology, such as the liquid crystal displays and shutters, have made it feasible to incorporate stereoscopic depth into the 3-D representations on 2-D displays. However, depth has already been vividly portrayed in video displays without stereopsis using the classical artists' depth cues described by Helmholtz (1866) and the dynamic depth cues described in detail by Ittleson (1952). Successful static depth cues include overlap, size, linear perspective, texture gradients, and shading. Effective dynamic cues include looming (Regan and Beverly, 1979) and motion parallax (Rogers and Graham, 1982). Stereoscopic depth is superior to the monocular distance cues under certain circumstances. It is most useful at portraying depth intervals as small as 5 to 10 arc secs. For this reason it is extremely useful in user-video interactions such as telepresence. Objects can be manipulated in 3-D space, for example, while a person who controls the operations views a virtual image of the manipulated object on a remote 2-D video display. Stereopsis also provides structure and form information in camouflaged surfaces such as tree foliage. Motion parallax also reveals form; however, without other monocular cues such as overlap, motion parallax can yield an ambiguous perception. For example, a turning sphere, portrayed as solid by parallax can appear to rotate either leftward or rightward. However, only one direction of rotation is perceived when stereo-depth is included. If the scene is static, then stereopsis is the principal cue for revealing the camouflaged surface structure. Finally, dynamic stereopsis provides information about the direction of motion in depth (Regan and Beverly, 1979). Clearly there are many spatial constraints, including spatial frequency content, retinal eccentricity, exposure duration, target spacing, and disparity gradient, which - when properly adjusted - can greatly enhance stereodepth in video displays.

  9. Modeling the Quality of Videos Displayed With Local Dimming Backlight at Different Peak White and Ambient Light Levels

    DEFF Research Database (Denmark)

    Mantel, Claire; Søgaard, Jacob; Bech, Søren


    This paper investigates the impact of ambient light and peak white (maximum brightness of a display) on the perceived quality of videos displayed using local backlight dimming. Two subjective tests providing quality evaluations are presented and analyzed. The analyses of variance show significant...... is computed using a model of the display. Widely used objective quality metrics are applied based on the rendering models of the videos to predict the subjective evaluations. As these predictions are not satisfying, three machine learning methods are applied: partial least square regression, elastic net...

  10. Influence of Delhi Pollution on Aerosol Properties Over Greater Noida (United States)

    Sharma, M.; Singh, R. P.; Kumar, R.


    Influence of Delhi Pollution on Aerosol Properties over Greater NoidaManish Sharma1, Ramesh P. Singh2 and Rajesh Kumar3 1Research and Technology Development Centre, Sharda University, Greater Noida, India. 2School of Earth and Environmental Sciences, Schmid College of Science, Chapman University, Orange 92866, USA 3School of Basic Sciences and Research, Sharda University, Greater Noida, India. Delhi capital of India is highly polluted during winter and summer seasons. Due to dominant westerly winds the air mass influence its neighboring city Greater Noida which is located 60 km south east of Delhi. Detailed analysis of multi satellite data and ground observations have been carried out during 2001-2015. The ground observation and satellite data show dynamic aerosol optical parameters over Greater Noida. During winter and summer seasons, dominant westerly wind outflow pollutants of Delhi that mix with the local anthropogenic emissions of Greater Noida influencing aerosol properties at different pressure levels. The characteristics of trace gases and aerosol parameters over Delhi and Greater Noida will be presented. The air quality is severely affected from the outflow of pollutants from Delhi which is threat to people living in the area. Due to dominant winds the air mass further transported towards eastern parts of Indo-Gangetic plains affecting weather conditions of the major cities.

  11. Liquid-crystal-display-based touchable light field three-dimensional display using display-capture mapping calibration. (United States)

    Peng, Yifan; Li, Haifeng; Zhong, Qing; Liu, Xu


    An approach to achieving a light field three-dimensional (3D) display with a large viewing angular range based on spliced multi-LCDs is investigated. The light field reconstruction principle, LCD-based hardware configuration, and diffuser characteristics are analyzed. A point-to-point mapping calibration method is proposed to improve imaging performance, by using an image sensor to capture the coordinate distributions of the images on the LCD panel, projected onto the display space. By measuring the coordinate distributions, calibration is implemented considering both imaging aberration and geometrical inaccuracy of the whole system. The LCD-based experiment demonstrates that this method can achieve not only fast and precise calibration but also easy scalability, flexible depth, and angular range. A touchable floating 3D scene with correct occlusion, high image resolution, and a large continuous viewing angular range can be observed.

  12. Greater family identification – but not greater contact with family members - leads to better health: evidence from a Spanish longitudinal study


    Wakefield, JRH; Sani, F.; Herrera, M.; Khan, SS; Dugard, P.


    We investigated the effect of family identification (one's subjective sense of belonging to and commonality with the family) on self-reported ill-health in 206 Valencian undergraduates, with eight months between T1 and T2. While greater family identification T1 predicted lower ill-health T2, ill-health T1 did not predict family identification T2. family contact T1 (one’s intensity of interaction with family) was unrelated to ill-health T2. This shows that family identification impacts positiv...

  13. A manned maneuvering unit proximity operations planning and flight guidance display and control system (United States)

    Gershzohn, Gary R.; Sirko, Robert J.; Zimmerman, K.; Jones, A. D.


    This task concerns the design, development, testing, and evaluation of a new proximity operations planning and flight guidance display and control system for manned space operations. A forecast, derivative manned maneuvering unit (MMU) was identified as a candidate for the application of a color, highway-in-the-sky display format for the presentation of flight guidance information. A silicon graphics 4D/20-based simulation is being developed to design and test display formats and operations concepts. The simulation includes the following: (1) real-time color graphics generation to provide realistic, dynamic flight guidance displays and control characteristics; (2) real-time graphics generation of spacecraft trajectories; (3) MMU flight dynamics and control characteristics; (4) control algorithms for rotational and translational hand controllers; (5) orbital mechanics effects for rendezvous and chase spacecraft; (6) inclusion of appropriate navigation aids; and (7) measurement of subject performance. The flight planning system under development provides for: (1) selection of appropriate operational modes, including minimum cost, optimum cost, minimum time, and specified ETA; (2) automatic calculation of rendezvous trajectories, en route times, and fuel requirements; (3) and provisions for manual override. Man/machine function allocations in planning and en route flight segments are being evaluated. Planning and en route data are presented on one screen composed of two windows: (1) a map display presenting a view perpendicular to the orbital plane, depicting flight planning trajectory and time data attitude display presenting attitude and course data for use en route; and (2) an attitude display presenting local vertical-local horizontal attitude data superimposed on a highway-in-the-sky or flight channel representation of the flight planned course. Both display formats are presented while the MMU is en route. In addition to these displays, several original display

  14. Perceived crosstalk assessment on patterned retarder 3D display (United States)

    Zou, Bochao; Liu, Yue; Huang, Yi; Wang, Yongtian


    CONTEXT: Nowadays, almost all stereoscopic displays suffer from crosstalk, which is one of the most dominant degradation factors of image quality and visual comfort for 3D display devices. To deal with such problems, it is worthy to quantify the amount of perceived crosstalk OBJECTIVE: Crosstalk measurements are usually based on some certain test patterns, but scene content effects are ignored. To evaluate the perceived crosstalk level for various scenes, subjective test may bring a more correct evaluation. However, it is a time consuming approach and is unsuitable for real­ time applications. Therefore, an objective metric that can reliably predict the perceived crosstalk is needed. A correct objective assessment of crosstalk for different scene contents would be beneficial to the development of crosstalk minimization and cancellation algorithms which could be used to bring a good quality of experience to viewers. METHOD: A patterned retarder 3D display is used to present 3D images in our experiment. By considering the mechanism of this kind of devices, an appropriate simulation of crosstalk is realized by image processing techniques to assign different values of crosstalk to each other between image pairs. It can be seen from the literature that the structures of scenes have a significant impact on the perceived crosstalk, so we first extract the differences of the structural information between original and distorted image pairs through Structural SIMilarity (SSIM) algorithm, which could directly evaluate the structural changes between two complex-structured signals. Then the structural changes of left view and right view are computed respectively and combined to an overall distortion map. Under 3D viewing condition, because of the added value of depth, the crosstalk of pop-out objects may be more perceptible. To model this effect, the depth map of a stereo pair is generated and the depth information is filtered by the distortion map. Moreover, human attention

  15. Unifying Subjectivity and Objectivity

    Directory of Open Access Journals (Sweden)

    Murugesan Chandrasekaran


    Full Text Available The contribution of modern science to the progress of civilization is immeasurable. Even its tendency toward exclusive concentration on the objective world has had salutary effects of great value. Modern science has wiped away much that was merely superstitious or speculative. Its rejection of unfounded opinions and prejudices has helped the thinking mind question conventional beliefs, shed preferences and prejudices, and challenge established authority. But modern systems thinking inherited from natural science is the suppression of the subjective dimension of reality. Many complex systems are an attempt to define and represent all subjective experience in physical terms. The modern man has a bias towards objectivity. The powerful influence of sense impressions on his mind and thinking makes him ignore the subjective experience and consider only objective facts as a valid, legitimate and representation of reality. Observing objective factors that are physical is easier than observing subjective factors that are subtle. The mechanistic view of reality has led to the rejection of the role of the individual in social development as insignificant. The individuals determine the development of society. Their social power has its roots both in subjective factors and objective factors. Economy, politics, society, and culture are inseparable dimensions of a single integrated reality. Subject and object constitute an integrated whole. The mind sees them as separate and independent. Or it views one as completely subordinate to the other. Unbiased approach to the study of all human experiences may prove that subject and object are interdependent dimensions or elements of reality.

  16. Psychological factors and visual fatigue in working with video display terminals


    Mocci, F; Serra, A.; Corrias, G


    OBJECTIVES—To examine the part played by psychological factors in complaints about visual health reported by banking officers who work at video display terminals (VDTs).
METHODS—Out of a population of 385 bank workers, a group of 212 subjects without organic visual disturbances (as determined by opthalmological examination) who share a work environment and job duties was selected. Three questionnaires were administered to these subjects: (a) the NIOSH job stress questionnaire; (b) a questionn...


    Directory of Open Access Journals (Sweden)

    D.N. Bakhrakh


    Full Text Available The question about the subjects of law branches is concerning the number of most important and difficult in law science. Its right decision influences on the subject of law regulation, precise definition of addressees of law norms, the volume of their rights and duties, the limits of action of norms of Main part of the branch, its principles. Scientific investigations, dedicated to law subjects system, promote the development of recommendations for the legislative and law applying activity; they are needed for scientific work organization and student training, for preparing qualified lawyers.

  18. Super high precision 200 ppi liquid crystal display series; Chokoseido 200 ppi ekisho display series

    Energy Technology Data Exchange (ETDEWEB)



    In mobile equipment, in demand is a high precision liquid crystal display (LCD) having the power of expression equivalent to printed materials like magazines because of the necessity of displaying a large amount of information on a easily potable small screen. In addition, with the spread and high-quality image of digital still cameras, it is strongly desired to display photographed digital image data in high quality. Toshiba Corp., by low temperature polysilicone (p-Si) technology, commercialized the liquid crystal display series of 200 ppi (pixels per inch) precision dealing with the rise of the high-precision high-image quality LCD market. The super high precision of 200 ppi enables the display of smooth beautiful animation comparable to printed sheets of magazines and photographs. The display series are suitable for the display of various information services such as electronic books and electronic photo-viewers including internet. The screen sizes lined up are No. 4 type VGA (640x480 pixels) of a small pocket notebook size and No. 6.3 type XGA (1,024x768 pixels) of a paperback size, with a larger screen to be furthered. (translated by NEDO)

  19. Potential interactions of collision avoidance advisories and cockpit displays of traffic information (United States)

    Palmer, E.; Ellis, S. R.


    Future aircraft cockpits may be equipped with both collision avoidance systems and cockpit traffic situation displays. This paper summarizes a series of experiments investigating a pilot's ability to make a variety of traffic related decisions with a traffic display. Some of the key findings were: Pilots were not able to accurately judge the future position of an aircraft unless the display contained predictor symbols. Pilots' subjective judgements of threat were inversely proportional to time to closest approach but generally were not sensitive to small changes of other parameters of the encounter. When pilots were asked to make avoidance maneuvers based solely on the traffic display, they began their maneuvers well before a CAS advisory would have been triggered. Provided sufficient time was available, pilots preferred horizontal avoidance maneuvers.

  20. Molecular insights into the biology of Greater Sage-Grouse (United States)

    Oyler-McCance, Sara J.; Quinn, Thomas W.


    Recent research on Greater Sage-Grouse (Centrocercus urophasianus) genetics has revealed some important findings. First, multiple paternity in broods is more prevalent than previously thought, and leks do not comprise kin groups. Second, the Greater Sage-Grouse is genetically distinct from the congeneric Gunnison sage-grouse (C. minimus). Third, the Lyon-Mono population in the Mono Basin, spanning the border between Nevada and California, has unique genetic characteristics. Fourth, the previous delineation of western (C. u. phaios) and eastern Greater Sage-Grouse (C. u. urophasianus) is not supported genetically. Fifth, two isolated populations in Washington show indications that genetic diversity has been lost due to population declines and isolation. This chapter examines the use of molecular genetics to understand the biology of Greater Sage-Grouse for the conservation and management of this species and put it into the context of avian ecology based on selected molecular studies.

  1. LiveDiverse: Case study area, Greater Kruger South Africa

    CSIR Research Space (South Africa)

    Nortje, Karen


    Full Text Available Livelihoods and Biodiversity in Developing Countries Case study area: Greater Kruger, South Africa January 2011 Kolhapur, India Where are we? HARDSHIP LIVELIHOODS NATURE & BIODIVERSITY BELIEFS & CULTURAL PRACTISE threesansinv foursansinv onesansinv...

  2. Greater Sage-grouse Telemetry - Mono Co. [ds68 (United States)

    California Department of Resources — Combined telemetry locations for sage grouse in Mono County which were fitted with radio-transmitters for the USGS Greater sage-grouse project. Contains spatial and...

  3. Management plan for Midcontinent greater white-fronted geese (United States)

    US Fish and Wildlife Service, Department of the Interior — The purpose of this plan is to provide guidelines for management decisions affecting the Midcontinent Population of Greater White-fronted Geese (Anser albifrons...

  4. Perception of horizontal aircraft separation on a cockpit display of traffic information (United States)

    Palmer, E. A.; Jago, S. J.; Baty, D. L.; Oconnor, S. L.


    The influence of various display symbologies in a cockpit display of traffic information (CDTI) on pilot perception of horizontal aircraft separation is investigated. In a series of nine experiments using different combinations of display symbology, information update rate, display viewing time and encounter geometry, subjects were asked to predict whether an intruder aircraft would pass in front of or behind their own aircraft. It is found that displayed history did not improve task performance, although it was desired by the pilots when no other display of aircraft turn rate was available, and that pilots made fewer errors when they had predictive information. Variations in the rate of updating information from 0.1 to 4 sec and viewing times from 1 to 16 sec are not observed to affect performance. It is concluded that the present task, which may arise in a collision avoidance situation, would require an onboard computer to make a prediction of relative aircraft position and display it on the CDTI.

  5. Optical layout of autostereoscopic display that simultaneously reproduces two views each with full-screen resolution. (United States)

    Ezhov, Vasily


    Traditional 60 Hz autostereoscopic displays with static amplitude parallax barriers have a half of full-screen resolution in each of the two displayed views of a 3D scene. The known 120 Hz autostereoscopic displays with dynamic amplitude parallax barriers have full-screen resolution but are characterized by essential light intensity losses and crosstalk in each of displayed views. The recently proposed autostereoscopic displays with simultaneous reproducing two image elements in each display pixel and with a polarization parallax barrier have full-screen resolution. However, the existing optical layout of these displays does not provide optimum operating conditions for the polarization parallax barrier creating a tendency to degrade the contrast and color characteristics. This paper presents a new optical layout characterized by the rearrangement of optical components of the previous layout. In this approach, the highlighted problems are addressed without any trade-offs. Through informal subjective visual tests, this proposal is found to provide good contrast and good color balance in the output image.

  6. Demonstration of Vibrational Braille Code Display Using Large Displacement Micro-Electro-Mechanical Systems Actuators (United States)

    Watanabe, Junpei; Ishikawa, Hiroaki; Arouette, Xavier; Matsumoto, Yasuaki; Miki, Norihisa


    In this paper, we present a vibrational Braille code display with large-displacement micro-electro-mechanical systems (MEMS) actuator arrays. Tactile receptors are more sensitive to vibrational stimuli than to static ones. Therefore, when each cell of the Braille code vibrates at optimal frequencies, subjects can recognize the codes more efficiently. We fabricated a vibrational Braille code display that used actuators consisting of piezoelectric actuators and a hydraulic displacement amplification mechanism (HDAM) as cells. The HDAM that encapsulated incompressible liquids in microchambers with two flexible polymer membranes could amplify the displacement of the MEMS actuator. We investigated the voltage required for subjects to recognize Braille codes when each cell, i.e., the large-displacement MEMS actuator, vibrated at various frequencies. Lower voltages were required at vibration frequencies higher than 50 Hz than at vibration frequencies lower than 50 Hz, which verified that the proposed vibrational Braille code display is efficient by successfully exploiting the characteristics of human tactile receptors.


    Directory of Open Access Journals (Sweden)

    A.V. Nekrutov


    Full Text Available The review analyzes the structure organization and pathophysiological age specificities of the greater omentum, which determine its uniqueness and functional diversity in a child's organism. the article discusses protective functions of the organ, its role in the development of post operative complications of children, and the usage in children's reconstructive plastic surgery.Key words: greater omentum, omentitis, of post operative complications, children.

  8. The Albanian National Question and the Myth of Greater Albania (United States)


    endured by the Albanians in Serbian-ruled Kosova. The 1997 instability in Albania, following the collapse of Ponzi Schemes , caused the cessation of...machinery to express the danger posed by the alleged Greater Albania scheme in order to demonize and morally downgrade the ANQ. However, one can easily...Greater Albania scheme in order to demonize and morally downgrade the ANQ. However, one can easily see that Albanians since the creation of their

  9. Greater saphenous vein anomaly and aneurysm with subsequent pulmonary embolism


    Ma, Truong; Kornbau, Craig


    Abstract Venous aneurysms often present as painful masses. They can present either in the deep or superficial venous system. Deep venous system aneurysms have a greater risk of thromboembolism. Though rare, there have been case reports of superficial aneurysms and thrombus causing significant morbidity such as pulmonary embolism. We present a case of an anomalous greater saphenous vein connection with an aneurysm and thrombus resulting in a pulmonary embolism. This is the only reported case o...

  10. An experimental framework for improved selection of binding proteins using SNAP display. (United States)

    Houlihan, Gillian; Gatti-Lafranconi, Pietro; Kaltenbach, Miriam; Lowe, David; Hollfelder, Florian


    Display technologies (e.g. phage and ribosome display) are powerful tools for selecting and evolving protein binders against various target molecules. SNAP display is a DNA display technology that is conducted entirely in vitro: DNA encoding a library of variants is encapsulated in water-in-oil droplets wherein in vitro protein expression and covalent coupling to the encoding DNA occurs. Here, we explore critical factors for the successful performance of SNAP display based on a set of experiments designed to measure and quantify to what extent they affect selection efficiency. We find that, in SNAP display, the reconstituted cell free expression system PURExpress led to 1.5-fold more active protein and achieved 3.5-fold greater DNA recovery in model selections compared to the RTS 100 Escherichia coli lysate based expression system. We report on the influence parameters including droplet occupancy, valency and selection stringency have on recovery and enrichment. An improved procedure involving bivalent display and stringent selection against a model target, Her2, led to a 10(7)-fold enrichment of a DARPin (H10-2-G3, known to bind Her2 with picomolar affinity) over a non-binding DARPin after three rounds of selection. Furthermore, when spiked into a mixture of DARPins with different affinities, DARPin H10-2-G3 outcompeted all other variants demonstrating SNAP display's ability to efficiently resolve clones with affinities in the nano- to picomolar range. These data establish SNAP display as an in vitro protein engineering tool for isolating protein binders and provide a framework for troubleshooting affinity selections. Copyright © 2014 The Authors. Published by Elsevier B.V. All rights reserved.

  11. The Data Subject

    DEFF Research Database (Denmark)

    Blume, Peter


    This article considers whether it is fortunate that data protection rules, as a starting point, apply to all physical persons as data subjects, or whether it would be better to differentiate between kinds of persons on grounds of their ability to act as a data subject. In order to protect all...... persons, it is argued that a principle of care should be part of data protection law....

  12. Virtual displays for 360-degree video (United States)

    Gilbert, Stephen; Boonsuk, Wutthigrai; Kelly, Jonathan W.


    In this paper we describe a novel approach for comparing users' spatial cognition when using different depictions of 360- degree video on a traditional 2D display. By using virtual cameras within a game engine and texture mapping of these camera feeds to an arbitrary shape, we were able to offer users a 360-degree interface composed of four 90-degree views, two 180-degree views, or one 360-degree view of the same interactive environment. An example experiment is described using these interfaces. This technique for creating alternative displays of wide-angle video facilitates the exploration of how compressed or fish-eye distortions affect spatial perception of the environment and can benefit the creation of interfaces for surveillance and remote system teleoperation.

  13. Uniform LED illuminator for miniature displays (United States)

    Medvedev, Vladimir; Pelka, David G.; Parkyn, William A.


    The Total Internally Reflecting (TIR) lens is a faceted structure composed of prismatic elements that collect a source's light over a much larger angular range than a conventional Fresnel lens. It has been successfully applied to the efficient collimation of light from incandescent and fluorescent lamps, and from light-emitting diodes (LEDs). A novel LED-powered collimating backlight is presented here, for uniformly illuminating 0.25'-diagonal miniature liquid- crystal displays, which are a burgeoning market for pagers, cellular phones, digital cameras, camcorders, and virtual- reality displays. The backlight lens consists of a central dual-asphere refracting section and an outer TIR section, properly curved with a curved exit face.

  14. Interactive displays natural human-interface technologies

    CERN Document Server

    Bhowmik, Achintya K


    One of the first books to provide an in-depth discussion of the technologies, applications and trends in the rapidly emerging field of interactive displays (touch, gesture & voice) The book will cover the technologies, applications and trends in the field of interactive displays, namely interfaces based on touch, gesture and voice and those using a combination of these technologies. The book will be split into 4 main parts with each being dedicated to a specific user interface. Part 1 ''Touch Interfaces'' will provide a review of the currently deployed touch-screen technologies and applications. It will also cover the recent developments towards achieving thinner, lightweight and cost-reduced touch screen panels in the future via integration of touch functionalities. Part 2 ''Gesture Interfaces'' will examine techniques and applications in stereoscopic 3D computer vision, structured-light 3D computer vision and time-of-flight 3D computer vision in gesture interfaces. Part 3 ''Voice Interfaces'' will revie...

  15. Micro-valve pump light valve display (United States)

    Lee, Yee-Chun


    A flat panel display incorporates a plurality of micro-pump light valves (MLV's) to form pixels for recreating an image. Each MLV consists of a dielectric drop sandwiched between substrates, at least one of which is transparent, a holding electrode for maintaining the drop outside a viewing area, and a switching electrode from accelerating the drop from a location within the holding electrode to a location within the viewing area. The sustrates may further define non-wetting surface areas to create potential energy barriers to assist in controlling movement of the drop. The forces acting on the drop are quadratic in nature to provide a nonlinear response for increased image contrast. A crossed electrode structure can be used to activate the pixels whereby a large flat panel display is formed without active driver components at each pixel.

  16. Integral display for non-static observers (United States)

    Dorado, Adrian; Hong, Seokmin; Saavedra, Genaro; Martinez-Corral, Manuel; Javidi, B.


    We propose to combine the Kinect and the Integral-Imaging technologies for the implementation of Integral Display. The Kinect device permits the determination, in real time, of (x,y,z) position of the observer relative to the monitor. Due to the active condition of its IR technology, the Kinect provides the observer position even in dark environments. On the other hand, SPOC 2.0 algorithm permits to calculate microimages adapted to the observer 3D position. The smart combination of these two concepts permits the implementation, for the first time we believe, of an Integral Display that provides the observer with color 3D images of real scenes that are viewed with full parallax and which are adapted dynamically to its 3D position.

  17. Visual displays and Neuro-Linguistic Programming

    Energy Technology Data Exchange (ETDEWEB)

    Brown-VanHoozer, S.A. [Argonne National Lab., Idaho Falls, ID (United States); VanHoozer, W.R. [Tranceformations Unlimited, Rigby, ID (United States)


    Advancement of computer technology is forthcoming at such a rapid pace that the research concerning the interplay of humans and computer technology is lagging far behind. One area of particular concern is the design of visual displays that are pragmatic, ``user friendly,`` and ``user assisting.`` When engineers design visual displays, they generally do so methodically and logically, but only from within their own individual perspective or ``model of the world.`` They select the human aspects which make sense to them and not necessarily to non-engineers, operators, and others. The model design is what the engineer chooses to relate, based on his or her perspective of reality. These choices limit the model design thereby excluding the users` perspective. A set of techniques which can be used to assist the designers in expanding their choices and include the users` model is Neuro-Linguistic Programming (NLP).

  18. Automated Analysis, Classification, and Display of Waveforms (United States)

    Kwan, Chiman; Xu, Roger; Mayhew, David; Zhang, Frank; Zide, Alan; Bonggren, Jeff


    A computer program partly automates the analysis, classification, and display of waveforms represented by digital samples. In the original application for which the program was developed, the raw waveform data to be analyzed by the program are acquired from space-shuttle auxiliary power units (APUs) at a sampling rate of 100 Hz. The program could also be modified for application to other waveforms -- for example, electrocardiograms. The program begins by performing principal-component analysis (PCA) of 50 normal-mode APU waveforms. Each waveform is segmented. A covariance matrix is formed by use of the segmented waveforms. Three eigenvectors corresponding to three principal components are calculated. To generate features, each waveform is then projected onto the eigenvectors. These features are displayed on a three-dimensional diagram, facilitating the visualization of the trend of APU operations.

  19. Cognitive Cost of Using Augmented Reality Displays. (United States)

    Baumeister, James; Ssin, Seung Youb; ElSayed, Neven A M; Dorrian, Jillian; Webb, David P; Walsh, James A; Simon, Timothy M; Irlitti, Andrew; Smith, Ross T; Kohler, Mark; Thomas, Bruce H


    This paper presents the results of two cognitive load studies comparing three augmented reality display technologies: spatial augmented reality, the optical see-through Microsoft HoloLens, and the video see-through Samsung Gear VR. In particular, the two experiments focused on isolating the cognitive load cost of receiving instructions for a button-pressing procedural task. The studies employed a self-assessment cognitive load methodology, as well as an additional dual-task cognitive load methodology. The results showed that spatial augmented reality led to increased performance and reduced cognitive load. Additionally, it was discovered that a limited field of view can introduce increased cognitive load requirements. The findings suggest that some of the inherent restrictions of head-mounted displays materialize as increased user cognitive load.

  20. Next Generation Flight Displays Using HTML5 (United States)

    Greenwood, Brian


    The Human Integrated Vehicles and Environments (HIVE) lab at Johnson Space Center (JSC) is focused on bringing together inter-disciplinary talent to design and integrate innovative human interface technologies for next generation manned spacecraft. As part of this objective, my summer internship project centered on an ongoing investigation in to building flight displays using the HTML5 standard. Specifically, the goals of my project were to build and demo "flight-like" crew and wearable displays as well as create a webserver for live systems being developed by the Advanced Exploration Systems (AES) program. In parallel to my project, a LabVIEW application, called a display server, was created by the HIVE that uses an XTCE (XML (Extensible Markup Language) Telemetry and Command Exchange) parser and CCSDS (Consultative Committee for Space Data System) space packet decoder to translate telemetry items sent by the CFS (Core Flight Software) over User Datagram Protocol (UDP). It was the webserver's job to receive these UDP messages and send them to the displays. To accomplish this functionality, I utilized Node.js and the accompanying Express framework. On the display side, I was responsible for creating the power system (AMPS) displays. I did this by using HTML5, CSS and JavaScript to create web pages that could update and change dynamically based on the data they received from the webserver. At this point, I have not started on the commanding, being able to send back to the CFS, portion of the displays but hope to have this functionality working by the completion of my internship. I also created a way to test the webserver's functionality without the display server by making a JavaScript application that read in a comma-separate values (CSV) file and converted it to XML which was then sent over UDP. One of the major requirements of my project was to build everything using as little preexisting code as possible, which I accomplished by only using a handful of Java

  1. Requirements for Color in Television Displays. Final Report for Period September 1975-June 1976. (United States)

    Puig, Joseph A.

    A review of the literature was made resulting in 41 references, 12 of which described research in applied experimental settings. Subjects in 10 of the 12 studies showed some improvement in performance as a result of using color in the displays. The decision as to whether a color or monochrome television system should be used appeared to be…

  2. Quality assessment of images displayed on LCD screen with local backlight dimming

    DEFF Research Database (Denmark)

    Mantel, Claire; Burini, Nino; Korhonen, Jari


    This paper presents a subjective experiment collecting quality assessment of images displayed on a LCD with local backlight dimming using two methodologies: absolute category ratings and paired-comparison. Some well-known objective quality metrics are then applied to the stimuli...... and their respective performance are analyzed. The HDR-VDP metric seems to achieve good performance on every source image....

  3. Response Grids: Practical Ways to Display Large Data Sets with High Visual Impact (United States)

    Gates, Simon


    Spreadsheets are useful for large data sets but they may be too wide or too long to print as conventional tables. Response grids offer solutions to the challenges posed by any large data set. They have wide application throughout science and for every subject and context where visual data displays are designed, within education and elsewhere.…

  4. The influence of an activity awareness display on distributed multi-team systems

    NARCIS (Netherlands)

    Brons, L.; Greef, T. de; Kleij, R. van der


    Motivation - Both multi-team systems and awareness displays have been studied more often in the past years, but there hasn't been much focus on the combination of these two subjects. Apart from doing so, we are particularly interested in the difficulties encountered when multi-team systems are

  5. Toward Designing Information Display to Support Critical Care (United States)

    Dunbar, Sherry; Macpherson, Brekk C; Moretti, Eugene W; Del Fiol, Guillherme; Bolte, Jean; Taekman, Jeffrey M; Segall, Noa


    Summary Objectives Electronic health information overload makes it difficult for providers to quickly find and interpret information to support care decisions. The purpose of this study was to better understand how clinicians use information in critical care to support the design of improved presentation of electronic health information. Methods We conducted a contextual analysis and visioning project. We used an eye-tracker to record 20 clinicians‘ information use activities in critical care settings. We played video recordings back to clinicians in retrospective cued interviews and queried: 1) context and goals of information use, 2) impacts of current display design on use, and 3) processes related to information use. We analyzed interview transcripts using grounded theory-based content analysis techniques and identified emerging themes. From these, we conducted a visioning activity with a team of subject matter experts and identified key areas for focus of design and research for future display designs. Results Analyses revealed four unique critical care information use activities including new patient assessment, known patient status review, specific directed information seeking, and review and prioritization of multiple patients. Emerging themes were primarily related to a need for better representation of dynamic data such as vital signs and laboratory results, usability issues associated with reducing cognitive load and supporting efficient interaction, and processes for managing information. Visions for the future included designs that: 1) provide rapid access to new information, 2) organize by systems or problems as well as by current versus historical patient data, and 3) apply intelligence toward detecting and representing change and urgency. Conclusions The results from this study can be used to guide the design of future acute care electronic health information display. Additional research and collaboration is needed to refine and implement

  6. A new application for displaying and fusing multimodal data sets (United States)

    Baum, Karl G.; Helguera, María; Krol, Andrzej


    A recently developed, freely available, application specifically designed for the visualization of multimodal data sets is presented. The application allows multiple 3D data sets such as CT (x-ray computer tomography), MRI (magnetic resonance imaging), PET (positron emission tomography), and SPECT (single photon emission tomography) of the same subject to be viewed simultaneously. This is done by maintaining synchronization of the spatial location viewed within all modalities, and by providing fused views of the data where multiple data sets are displayed as a single volume. Different options for the fused views are provided by plug-ins. Plug-ins typically used include color-overlays and interlacing, but more complex plug-ins such as those based on different color spaces, and component analysis techniques are also supported. Corrections for resolution differences and user preference of contrast and brightness are made. Pre-defined and custom color tables can be used to enhance the viewing experience. In addition to these essential capabilities, multiple options are provided for mapping 16-bit data sets onto an 8-bit display, including windowing, automatically and dynamically defined tone transfer functions, and histogram based techniques. The 3D data sets can be viewed not only as a stack of images, but also as the preferred three orthogonal cross sections through the volume. More advanced volumetric displays of both individual data sets and fused views are also provided. This includes the common MIP (maximum intensity projection) both with and without depth correction for both individual data sets and multimodal data sets created using a fusion plug-in.

  7. Design Issues in Video Disc Map Display. (United States)


    design, several variations in overlay were either observed, mentioned in conversation, or came to mind, and these include: (a) pointing to a menu of...Schmandt, C. (1980), "Soft Typography ", Information Processing 󈨔, S.H. Lavington (ed.), North-Holland Publishing Co., pp. 1027-1031. Describes a method...first .. i symbol in the menu along the bottom of the screen and has then touched the displayed map where that symbol is to apppear. The lower photo

  8. Vision Algorithms Catch Defects in Screen Displays (United States)


    Andrew Watson, a senior scientist at Ames Research Center, developed a tool called the Spatial Standard Observer (SSO), which models human vision for use in robotic applications. Redmond, Washington-based Radiant Zemax LLC licensed the technology from NASA and combined it with its imaging colorimeter system, creating a powerful tool that high-volume manufacturers of flat-panel displays use to catch defects in screens.

  9. Predictive Displays for High Latency Teleoperation (United States)


    presented to operator Original Image Predicted Image Motion Perspective transform Perspective transform Ground plane Far plane Illustration purposes...5 • Longitudinal model incorporates propulsion , brake, drag, grade. • Lateral/yaw model incorporates steer. • Prediction...System Layout 0 1 2 2’ x0 z0 y0 y1 x1 z1 y2 -x2 z2 Ground plane Far plane BRUDNAK, “PREDICTIVE DISPLAYS FOR HIGH LATENCY TELEOPERATION” Projection Back to

  10. SureTrak Probability of Impact Display (United States)

    Elliott, John


    The SureTrak Probability of Impact Display software was developed for use during rocket launch operations. The software displays probability of impact information for each ship near the hazardous area during the time immediately preceding the launch of an unguided vehicle. Wallops range safety officers need to be sure that the risk to humans is below a certain threshold during each use of the Wallops Flight Facility Launch Range. Under the variable conditions that can exist at launch time, the decision to launch must be made in a timely manner to ensure a successful mission while not exceeding those risk criteria. Range safety officers need a tool that can give them the needed probability of impact information quickly, and in a format that is clearly understandable. This application is meant to fill that need. The software is a reuse of part of software developed for an earlier project: Ship Surveillance Software System (S4). The S4 project was written in C++ using Microsoft Visual Studio 6. The data structures and dialog templates from it were copied into a new application that calls the implementation of the algorithms from S4 and displays the results as needed. In the S4 software, the list of ships in the area was received from one local radar interface and from operators who entered the ship information manually. The SureTrak Probability of Impact Display application receives ship data from two local radars as well as the SureTrak system, eliminating the need for manual data entry.

  11. Three-dimensional image display in medicine. (United States)

    Mankovich, N J; Robertson, D R; Cheeseman, A M


    This article is a tutorial on the methods used to create three-dimensional (3-D) images for use in displaying patient anatomy. This new view into anatomy has developed over the last 10 years from the need of surgeons, radiation therapists, and radiologists to integrate the many images resulting from the recent growth in tomographic imaging including computed tomography (CT) and magnetic resonance imaging (MRI). CT and MRI studies result in 30 to 100 images. 3-D imaging processes and integrates this image data volume and extracts more meaningful, derivative images via multiplanar reconstruction (MPR), shaded surface processing, or volumetric processing. MPR reslices the image volume to produce novel views of patient anatomy while retaining the image voxel intensities. Realistic shaded surface display of 3-D objects can involve extensive processing of the images to create computer representations of objects rendered into a displayable 3-D scene. Volumetric imaging combines the voxel processing of MPR with the techniques of tissue classification and surface shading to produce novel projections of the image data volume that allow automated creation of 3-D scenes without recourse to the complexities of object delineation. As the ultimate 3-D display, recent advances in computer-aided design (CAD) and computer-aided manufacturing (CAM) allow the fabrication of physical models of anatomy using computer-controlled milling machines. New technology that actually builds the model layer by layer from a liquid plastic offers the possibility of complete models with intact internal anatomy. The growth in 3-D is certain as hardware and software costs decrease and medical professionals find further applications for this technology.

  12. A Conceptual Framework for Ambient Learning Displays


    Börner, Dirk; Kalz, Marco; Specht, Marcus


    Börner, D., Kalz, M., & Specht, M. (2010). A Conceptual Framework for Ambient Learning Displays. In B. Chang, T. Hirashima, & H. Ogata (Eds.), Joint Proceedings of the Work-in-Progress Poster and Invited Young Researcher Symposium for the 18th International Conference on Computers in Education (pp. 34-36). November, 29 - December, 3, 2010, Putrajaya, Malaysia: Asia-Pacific Society for Computers in Education.

  13. Electronic control/display interface technology (United States)

    Parrish, R. V.; Busquets, A. M.; Murray, R. F.; Hatfield, J. J.


    An effort to produce a representative workstation for the Space Station Data Management Test Bed that provides man/machine interface design options for consolidating, automating, and integrating the space station work station, and hardware/software technology demonstrations of space station applications is discussed. The workstation will emphasize the technologies of advanced graphics engines, advanced display/control medias, image management techniques, multifunction controls, and video disk utilizations.

  14. Remote Software Application and Display Development (United States)

    Sanders, Brandon T.


    The era of the shuttle program has come to an end, but only to give rise to newer and more exciting projects. Now is the time of the Orion spacecraft, a work of art designed to exceed all previous endeavors of man. NASA is exiting the time of exploration and is entering a new period, a period of pioneering. With this new mission, many of NASAs organizations must undergo a great deal of change and development to support the Orion missions. The Spaceport Command and Control System (SCCS) is the new system that will provide NASA the ability to launch rockets into orbit and thus control Orion and other spacecraft as the goal of populating Mars becomes ever increasingly tangible. Since the previous control system, Launch Processing System (LPS), was primarily designed to launch the shuttles, SCCS was needed as Kennedy Space Center (KSC) reorganized to a multiuser spaceport for commercial flights, providing a more versatile control over rockets. Within SCCS, is the Launch Control System (LCS), which is the remote software behind the command and monitoring of flight and ground system hardware. This internship at KSC has involved two main components in LCS, including Remote Software Application and Display development. The display environment provides a graphical user interface for an operator to view and see if any cautions are raised, while the remote applications are the backbone that communicate with hardware, and then relay the data back to the displays. These elements go hand in hand as they provide monitoring and control over hardware and software alike from the safety of the Launch Control Center. The remote software applications are written in Application Control Language (ACL), which must undergo unit testing to ensure data integrity. This paper describes both the implementation and writing of unit tests in ACL code for remote software applications, as well as the building of remote displays to be used in the Launch Control Center (LCC).

  15. Filmless multimedia display following cardiac catheterization. (United States)

    Mathewson, J W


    In traditional cardiac catheterization laboratories, anatomic images are acquired onto 35-mm cine film and presented in series with related information days, weeks, or months later to an audience of decision-makers. These data are projected onto a convenient light-colored wall or silver screen, while echocardiograms and electrophysiologic data are displayed using small single-user computer monitors. This presentation format is not ideal, because full audience participation is not fostered, image quality may be degraded, and small computer screens can be adequataly visualized only by those individuals immediately in front of them. Modern video multimedia systems now make an ideal data presentation format practical, in which all types of media including digitally acquired angiograms can be displayed in parallel with full annotation, using large diagonal multisync color monitors. This communication discusses how to design a multimedia conference center in which remotely acquired filmless digital images can be displayed and processed together with all other pertinent cardiac multimedia to a large audience.

  16. Display applications for holographic optical elements (United States)

    Gambogi, William J., Jr.; Armstrong, Mark L.; Hamzavy, Babak; Levin, Michael L.; Mackara, Steven R.; Molteni, William J., Jr.; Steijn, Kirk W.; Stevenson, Sylvia H.; Felder, Thomas C.; Heidt, Gerald L.; Miller, Douglas R.


    In the last several years, holographic elements have been introduced into a wide array of display applications. Holographic Reflectors are incorporated with liquid crystal displays to shift optimum viewing angle away form specular glare and raise brightness by concentrating light at a convenient viewing angle. Reflectors can be produced in blue, green, gold, red, or white colors. Denso GlassVision projection screens incorporate transmission holograms to efficiently direct projected light to the viewer in a screen that reverts to clear glass When the projection image is turned off. JVC has introduce da large-screen HDTV that uses a holographic color filter to separate blue, green, and red light from the illumination beam, and direct the sorted colors to the appropriate color pixel, raising brightness with a passive component. Most recently, HOE prototypes have been produced to improve the efficiency of portable liquid crystal color display. Front diffuser are affixed to the face of reflective color LCDs and direct output light from the LCD to the viewer at a convenient viewing angle in a concentrated view cone. Reflective Colors Filters are pixelated diffuse reflectors internal to the LCD structure and aligned to the LCD matrix. These reflective filters provide higher brightness, larger color gamut, and better color saturation including a holographic grating are under development to provide wider view angle in direct-view LCDs.

  17. Helmet-Mounted Display Design Guide (United States)

    Newman, Richard L.; Greeley, Kevin W.


    Helmet Mounted Displays (HMDs) present flight, navigation, and weapon information in the pilot's line of sight. The HMD was developed to allow the pilot to retain aircraft and weapon information while looking off boresight. This document reviews current state of the art in HMDs and presents a design guide for the HMD engineer in identifying several critical HMD issues: symbol stabilization, inadequate definitions, undefined symbol drive laws, helmet considerations, and Field Of View (FOV) vs. resolution tradeoff requirements. In particular, display latency is a key issue for HMDs. In addition to requiring further experimental studies, it impacts the definition and control law issues. Symbol stabilization is also critical. In the case of the Apache helicopter, the lack of compensation for pilot head motion creates excessive workload during hovering and Nap Of the Earth (NOE) flight. This translates into excessive training requirements. There is no agreed upon set of definitions or descriptions for how HMD symbols are driven to compensate for pilot head motion. A set of definitions is proposed to address this. There are several specific areas where simulation and flight experiments are needed: development of hover and NOE symbologies which compensate for pilot head movement; display latency and sampling, and the tradeoff between FOV, sensor resolution and symbology.

  18. OTFT backplanes for integration into flexible displays (United States)

    Cooke, Michael D.; McCall, Keri L.; Bird, David P.; Lee, Yong Uk; Pease, Tim; Chan, Sam Y. F.; Palumbo, Marco; McGloin, Steve; Ogier, Simon D.


    Recent developments in high performance organic semiconductor (OSC) materials have shown charge mobilities in the range of 2 to 5 cm2/Vs. We present our progress in fabricating organic thin film transistor (OTFT) backplanes using a low temperature process (100°C maximum) and the prospects for integration into flexible displays. Discussion is made of the fabrication process using typical flat panel display equipment as well as the possibility of further device enhancement using ink jet printing technologies. We show the feasibility of achieving an average panel mobility of >1 cm2/Vs on a range of transistor array sizes. Electrical data is presented to show how the parameters of interest, (mobility, on/off ratio, Vth), vary across an array as well as some of the scaling factors that will be important for the final device architecture. Finally, we discuss how these devices have the potential for integration into a range of displays (for example, e-paper and OLEDs) for commercial exploitation.

  19. LED-driven backlights for automotive displays (United States)

    Strauch, Frank


    As a light source the LED has some advantage over the traditionally used fluorescence tube such as longer life or lower space consumption. Consequently customers are asking for the LED lighting design in their products. We introduced in a company owned backlight the white LED technology. This step opens the possibility to have access to the components in the display market. Instead of having a finalized display product which needs to be integrated in the head unit of a car we assemble the backlight, the glass, own electronics and the housing. A major advantage of this concept is the better control of the heat flow generated by the LEDs to the outer side because only a common housing is used for all the components. Also the requirement for slim products can be fulfilled. As always a new technology doesn't come with advantages only. An LED represents a point source compared to the well-known tube thus requiring a mixing zone for the multiple point sources when they enter a light guide. This zone can't be used in displays because of the lack of homogeneity. It's a design goal to minimize this zone which can be helped by the right choice of the LED in terms of slimness. A step ahead is the implementation of RGB LEDs because of their higher color rendering abilities. This allows for the control of the chromaticity point under temperature change but as a drawback needs a larger mixing zone.

  20. Intraoperative determination and display of cortical function (United States)

    Bass, W. Andrew; Galloway, Robert L., Jr.; Dawant, Benoit M.; Maciunas, Robert J.


    One of the most important issues in neurosurgical lesion resection is margin definition. And while there is still some effort required to exactly determine lesion boundaries from tomographic images, the lesions are at least perceptible on the scans. What is not visible is the location of function. Functional imaging such as PET and fMRI hold some promise for cortical function localization; however, intraoperative cortical mapping can provide exact localization of function without ambiguity. Since tomographic images can provide lesion margin definition and cortical mapping can provide functional information we have developed a system for combining the two in our Interactive, Image-Guided system. For cortical surface mapping we need a surface description. Brain contours are extracted from a MRI volume using a deformable model approach and rendered from multiple angular positions. As the surgeon moves a probe, its position is displayed on the view closes to the angular position of the probe. During functional mapping, positive response to stimulation result in a color overlay 'dot' added to the cortical surface display. Different colored dots are used to distinguish between motor function and language function. And a third color is used to display overlapping functionality. This information is used to guide the resection around functionally eloquent areas of the cortex.

  1. Telerobotics - Display, control, and communication problems (United States)

    Stark, Lawrence; Kim, Won-Soo; Tendick, Frank; Hannaford, Blake; Ellis, Stephen


    An experimental telerobotics simulation is described suitable for studying human operator (HO) performance. Simple manipulator pick-and-place and tracking tasks allowed quantitative comparison of a number of calligraphic display viewing conditions. An enhanced perspective display was effective with a reference line from target to base, with or without a complex three-dimensional grid framing the view. This was true especially if geometrical display parameters such as azimuth and elevation were arranged to be near optimal. Quantitative comparisons were made possible, utilizing control performance measures such as root mean square error. There was a distinct preference for controlling the manipulator in end-effector Cartesian space for the primitive pick-and-place task, rather than controlling joint angles and then, via direct kinematis, the end-effector position. An introduced communication delay was found to produce decrease in performance. In considerable part, this difficulty could be compensated for by preview control information. The fact that neurological control of normal human movement contains a sampled data period of 0.2 s may relate to this robustness of HO control to delay.

  2. Interaction Analysis through Proteomic Phage Display

    Directory of Open Access Journals (Sweden)

    Gustav N. Sundell


    Full Text Available Phage display is a powerful technique for profiling specificities of peptide binding domains. The method is suited for the identification of high-affinity ligands with inhibitor potential when using highly diverse combinatorial peptide phage libraries. Such experiments further provide consensus motifs for genome-wide scanning of ligands of potential biological relevance. A complementary but considerably less explored approach is to display expression products of genomic DNA, cDNA, open reading frames (ORFs, or oligonucleotide libraries designed to encode defined regions of a target proteome on phage particles. One of the main applications of such proteomic libraries has been the elucidation of antibody epitopes. This review is focused on the use of proteomic phage display to uncover protein-protein interactions of potential relevance for cellular function. The method is particularly suited for the discovery of interactions between peptide binding domains and their targets. We discuss the largely unexplored potential of this method in the discovery of domain-motif interactions of potential biological relevance.

  3. Interaction Analysis through Proteomic Phage Display (United States)


    Phage display is a powerful technique for profiling specificities of peptide binding domains. The method is suited for the identification of high-affinity ligands with inhibitor potential when using highly diverse combinatorial peptide phage libraries. Such experiments further provide consensus motifs for genome-wide scanning of ligands of potential biological relevance. A complementary but considerably less explored approach is to display expression products of genomic DNA, cDNA, open reading frames (ORFs), or oligonucleotide libraries designed to encode defined regions of a target proteome on phage particles. One of the main applications of such proteomic libraries has been the elucidation of antibody epitopes. This review is focused on the use of proteomic phage display to uncover protein-protein interactions of potential relevance for cellular function. The method is particularly suited for the discovery of interactions between peptide binding domains and their targets. We discuss the largely unexplored potential of this method in the discovery of domain-motif interactions of potential biological relevance. PMID:25295249

  4. 50-in. time-multiplexed autostereoscopic display (United States)

    Dodgson, Neil A.; Moore, John R.; Lang, Stewart R.; Martin, Graham J.; Canepa, Peter M.


    We describe the development and construction of a large screen version of the Cambridge time-multiplexed autostereo display. The new device uses a 50 inch diagonal spherical mirror in place of the 10 inch Fresnel lens of the original Cambridge color display. A fivefold increase in image luminance has been achieved by the replacement of sequential color on a single CRT with separate red, green, and blue CRTs. Fifteen views are displayed at 640 X 480 (VGA) resolution with about 250 cd/m2 luminance and 30 Hz interlaced refresh rate. A 22 mm interview separation provides three views between a typical viewer's eyes, giving a smooth stereoscopic effect over a 330 mm wide eye box. Two identical optical systems have been built, allowing simultaneous use of the device by two viewers. The two system are off-axis with respect to the main mirror, requiring geometric compensation on the CRTs in addition to the normal color convergence. The prototype produces two independent full color, large 3D images which can be viewed under normal lighting conditions.

  5. Information transmission with a multi-finger tactual display. (United States)

    Tan, H Z; Durlach, N I; Rabinowitz, W M; Reed, C M


    Motivated by the highly successful Tadoma method of speech communication, a multi-finger positional display (the TACTUATOR) was developed to study perception via the kinesthetic and vibrotactile aspects of the tactual sensory system of the hand. The information transmission capabilities with the TACTUATOR were assessed through a series of absolute identification experiments. An information transfer (IT) of 5.6 to 6.5 bits for stimulus durations of 125 to 500 msec was obtained in absolute-identification experiments with sets of signals derived by varying frequency, amplitude, and site of stimulation of multicomponent waveforms. An estimated IT rate of 12 bits/sec was obtained by sequencing three random stimuli and (a) having the subject identify only the middle stimulus and (b) extrapolating this IT to that for continuous streams. This IT rate is roughly the same as that achieved by Tadoma users in tactual speech communication.


    evaluated. Selected studies of such factors as vertical resolution, video bandwidth, and direction of scanning are reviewed in detail. Conclusions are drawn, and recommendations are made for display design and applications.

  7. Large High Resolution Displays for Co-Located Collaborative Sensemaking: Display Usage and Territoriality

    Energy Technology Data Exchange (ETDEWEB)

    Bradel, Lauren; Endert, Alexander; Koch, Kristen; Andrews, Christopher; North, Chris


    Large, high-resolution vertical displays carry the potential to increase the accuracy of collaborative sensemaking, given correctly designed visual analytics tools. From an exploratory user study using a fictional textual intelligence analysis task, we investigated how users interact with the display to construct spatial schemas and externalize information, as well as how they establish shared and private territories. We investigated the space management strategies of users partitioned by type of tool philosophy followed (visualization- or text-centric). We classified the types of territorial behavior exhibited in terms of how the users interacted with information on the display (integrated or independent workspaces). Next, we examined how territorial behavior impacted the common ground between the pairs of users. Finally, we offer design suggestions for building future co-located collaborative visual analytics tools specifically for use on large, high-resolution vertical displays.

  8. A dynamic display keyboard and a key for use in a dynamic display keyboard

    DEFF Research Database (Denmark)


    The invention relates to a dynamic display keyboard comprising a plurality of key elements (101), each key element (101) comprises a transmitting part (102) capable of transmitting at least a part of light incident on the transmitting part; a mat (105) comprising a plurality of elevated elements...... (106, 107, 109, 201, 202) capable of providing a tactile feedback and comprising an opening (113); wherein each key element (101) is fixedly connected to at least one respective elevated element (106, 107, 109, 201, 202) via at least one spacer (1201); at least one display unit (111, 911) comprising......). In this way, the dynamic display keyboard is able to provide a tactile feedback in response to a user action directed towards a key of the keyboard. Further, the only power requiring element in the keyboard is the display unit....

  9. Oxidative effects and metabolic changes following exposure of greater duckweed (Spirodela polyrhiza) to diethyl phthalate. (United States)

    Cheng, Lee-Ju; Cheng, Tai-Sheng


    The toxicity and effects of diethyl phthalate (DEP), a potent allelochemical, on the growth of greater duckweed were studied. Biochemical analyses and physiological methods were combined to investigate oxidative stress, adverse effects and their mechanisms in greater duckweeds grown in 0-2 mM of diethyl phthalate (DEP) after cultivation for 7 days. The results showed that J-shaped concentration response curves were displayed in hydrogen peroxide (H2O2), ascorbic acid (ASA) and dehydroascorbate (DHA) levels, and ascorbate peroxidase (APX) and gualacol peroxidase (POD) activities, indicating reduced oxidative stress and toxic effect. The inverted U-shaped curves were exhibited in relative growth rate (RGR), fresh weight/dry weight (FW/DW) ratio, total chlorophyll content, total soluble thiols, and glutathione reductase (GR) activity, revealing beneficial effect in plant growth. The inverted U-shaped curves were also found in malondialdehyde (MAD) and superoxide radical (O2-) contents with the increasing concentration of DEP, indicative of enhanced oxidative stress. The results suggest that DEP is toxic to the greater duckweed by inducing oxidative stress and antioxidative enzymes may play important roles in the defense strategy against DEP toxicity. Copyright © 2011 Elsevier B.V. All rights reserved.

  10. Greater tibial bone strength in male tennis players than controls in the absence of greater muscle output

    Directory of Open Access Journals (Sweden)

    Alex Ireland


    Conclusion: Results suggest that sports with quick turning movements are highly osteogenic, even in the absence of greater muscular output. This may be related to the large torsional stresses produced during turning movements.

  11. Advanced Colorimetry of Display Systems: Tetra-Chroma3 Display Unit

    Directory of Open Access Journals (Sweden)

    J. Kaiser


    Full Text Available High-fidelity color image reproduction is one of the key issues invisual telecommunication systems, for electronic commerce,telemedicine, digital museum and so on. All colorimetric standards ofdisplay systems are up to the present day trichromatic. But, from theshape of a horseshoe-area of all existing colors in the CIE xychromaticity diagram it follows that with three real reproductivelights, the stated area in the CIE xy chromaticity diagram cannot beoverlaid. The expansion of the color gamut of a display device ispossible in a few ways. In this paper, the way of increasing the numberof primaries is studied. The fourth cyan primary is added to threeconventional ones to enlarge the color gamut of reproduction towardscyans and yellow-oranges. The original method of color management forthis new display unit is introduced. In addition, the color gamut ofthe designed additive-based display is successfully compared with thecolor gamut of a modern subtractive-based system. A display with morethan three primary colors is called a multiprimary color display. Thevery advantageous property of such display is the possibility todisplay metameric colors.

  12. Math on a sphere: Making use of public displays in mathematics and programming education

    Directory of Open Access Journals (Sweden)

    Michael Eisenberg


    Full Text Available Science on a Sphere (SoS is a compelling educational display installed at numerous museums and planetariums around the world; essentially the SoS display is a large spherical surface on which multicolor high-resolution depictions of (e.g. planetary weather maps may be depicted. Fascinating as the SoS display is, however, it is in practice restricted to the use of museum professionals; students (and for that matter, older museum visitors are unable to create their own displays for the surface. This paper describes a working software system, Math on a Sphere (MoS, that democratizes the SoS display by providing a simple programming interface to the public, over the World Wide Web. Briefly, our system allows anyone to write programs for spherical graphics patterns, and then to upload those programs at a planetarium or museum site and see the result on the giant sphere. This paper describes the implementation of the MoS system; sketches a sample project; and concludes with a more wide-ranging discussion of our user testing to date, as well as strategies for empowering children and students with greater control of public displays.

  13. Progress in Bacillus subtilis Spore Surface Display Technology towards Environment, Vaccine Development, and Biocatalysis. (United States)

    Chen, Huayou; Ullah, Jawad; Jia, Jinru


    Spore surface display is the most desirable with enhanced effects, low cost, less time consuming and the most promising technology for environmental, medical, and industrial development. Spores have various applications in industry due to their ability to survive in harsh industrial processes including heat resistance, alkaline tolerance, chemical tolerance, easy recovery, and reusability. Yeast and bacteria, including gram-positive and -negative, are the most frequently used organisms for the display of various proteins (eukaryotic and prokaryotic), but unlike spores, they can rupture easily due to nutritive properties, susceptibility to heat, pH, and chemicals. Hence, spores are the best choice to avoid these problems, and they have various applications over nonspore formers due to amenability for laboratory purposes. Various strains of Clostridium and Bacillus are spore formers, but the most suitable choice for display is Bacillus subtilis because, according to the WHO, it is safe to humans and considered as "GRAS" (generally recognized as safe). This review focuses on the application of spore surface display towards industries, vaccine development, the environment, and peptide library construction, with cell surface display for enhanced protein expression and high enzymatic activity. Different vectors, coat proteins, and statistical analyses can be used for linker selection to obtain greater expression and high activity of the displayed protein. © 2017 S. Karger AG, Basel.

  14. All-day performance variations in normal and narcoleptic subjects. (United States)

    Godbout, R; Montplaisir, J


    This study compared the performance of narcoleptic and control subjects on one psychomotor task, examined the recuperative power of naps in narcoleptic subjects, and evaluated the respective recuperative values of REM and NREM sleep. Ten untreated narcoleptic and eight control subjects repeatedly responded to a choice reaction time task during days with and days without napping. Narcoleptic subjects exhibited low performance levels relative to control subjects on all variables. Napping improved the performance of narcoleptic subjects except for the number of long latency (reaction time greater than 1,000 ms) responses. Finally, performance, particularly on accuracy measures, was better, although not significantly, after NREM naps when compared with REM naps.

  15. Subject (of documents)

    DEFF Research Database (Denmark)

    Hjørland, Birger


    such as concepts, aboutness, topic, isness and ofness are also briefly presented. The conclusion is that the most fruitful way of defining “subject” (of a document) is the documents informative or epistemological potentials, that is, the documents potentials of informing users and advance the development......This article presents and discuss the concept “subject” or subject matter (of documents) as it has been examined in library and information science (LIS) for more than 100 years. Different theoretical positions are outlined and it is found that the most important distinction is between document......-oriented views versus request-oriented views. The document-oriented view conceive subject as something inherent in documents, whereas the request-oriented view (or the policy based view) understand subject as an attribution made to documents in order to facilitate certain uses of them. Related concepts...

  16. Why are hispanics at greater risk for PTSD? (United States)

    Pole, Nnamdi; Best, Suzanne R; Metzler, Thomas; Marmar, Charles R


    Several studies have found that Hispanic Americans have higher rates of posttraumatic stress disorder (PTSD) than non-Hispanic Caucasian and Black Americans. The authors identified predictors of PTSD symptom severity that distinguished Hispanic police officers (n=189) from their non-Hispanic Caucasian (n=317) and Black (n=162) counterparts and modeled them to explain the elevated Hispanic risk for PTSD. The authors found that greater peritraumatic dissociation, greater wishful thinking and self-blame coping, lower social support, and greater perceived racism were important variables in explaining the elevated PTSD symptoms among Hispanics. Results are discussed in the context of Hispanic culture and may be important for prevention of mental illness in the fastest growing ethnic group in the United States. Copyright (c) 2005 APA, all rights reserved.

  17. Surgical effect observation of lens dislocation greater than 2 quadrants

    Directory of Open Access Journals (Sweden)

    Wen-Wen Dou


    Full Text Available AIM: To investigate the clinical effect of cataract combined lens dislocation greater than 2 quadrants' patients after having phase I intracapsular cataract extraction and anterior vitrectomy, postoperative corrected vision greater than 0.3, and then taking phase II small incision suture-fixation of intraocular lens suspension.METHODS: Totally 34 cases with cataract combined lens dislocation greater than 2 quadrants had been treated in our hospital from July 2014 to December 2016. We investigated their 1wk, 1 and 3mo postoperative complications and the uncorrected visual acuity, best corrected visual acuity, intraocular pressure, corneal astigmatism who took phase II small incision suture-fixation of intraocular lens suspension with corrected vision greater than 0.3 after having phase I intracapsular cataract extraction and anterior vitrectomy.RESULTS: Along with the recovery time extension, patients' uncorrected visual acuity and best corrected visual acuity increased obviously than preoperative in each phase. On the 3mo postoperatively, the best corrected visual acuity of 1 eyes was between 0.3 and 0.1, 8 eyes was between 0.5 and 0.3, 16 eyes was between 0.7 and 0.5, and 9 eyes was better than 0.7. The best corrected visual acuity was achieved or near the best corrected visual acuity before surgery. Intraocular pressure rechecked became in the normal range at 1wk, 1 and 3mo postoperative. Surgery did not significantly increase the corneal astigmatism. CONCLUSION: It is a safe and effective way in improving eyesight effectively, with stable intraocular pressure and fewer complications towards cataract combined lens dislocation greater than 2 quadrants' patients having phase I intracapsular cataract extraction and anterior vitrectomy, whose postoperative corrected vision greater than 0.3, and then phase II small incision suture-fixation of intraocular lens suspension.

  18. The Subjectivity of Participation

    DEFF Research Database (Denmark)

    Nissen, Morten

    What is a 'we' – a collective – and how can we use such communal self-knowledge to help people? This book is about collectivity, participation, and subjectivity – and about the social theories that may help us understand these matters. It also seeks to learn from the innovative practices and ideas...... practices. Through this dialogue, it develops an original trans-disciplinary critical theory and practice of collective subjectivity for which the ongoing construction and overcoming of common sense, or ideology, is central. It also points to ways of relating discourse with agency, and fertilizing insights...... from interactionism and ideology theories in a cultural-historical framework....

  19. (Incorporating) Adjunct displays: a step toward facilitation of reading comprehension


    Marefat, Hamideh; Ghahari, Shima


    Two types of adjunct displays, graphic organizer and outline, were compared with text display to determine which one facilitates text comprehension by L2 learners. The results indicated the superiority of adjunct displays. However, no difference was observed between graphic organizers and outlines. Also it was found that low proficiency learners benefited from adjunct displays more than high proficiency ones. The results support the pedagogical potential of adjunct displays as ...

  20. Ultrasound-guided corticosteroid injections for treatment of greater trochanteric pain syndrome: greater trochanter bursa versus subgluteus medius bursa. (United States)

    McEvoy, Jennifer R; Lee, Kenneth S; Blankenbaker, Donna G; del Rio, Alejandro Munoz; Keene, James S


    The purpose of this study was to evaluate the effectiveness of corticosteroid injections into the greater trochanteric bursa as opposed to the subgluteus medius bursa in patients with greater trochanteric pain syndrome. We retrospectively reviewed 183 injections (149 performed in women, 34 performed in men; age range 23-90 years; median, 53 years) performed for treatment of greater trochanteric pain syndrome. A 10-cm visual analog scale survey was used to assess pain level before the procedure and 14 days after the procedure. A 3-mL corticosteroid solution was injected into either the greater trochanteric bursa or the subgluteus medius bursa under direct ultrasound guidance. Procedure images were retrospectively reviewed to determine the site of injection. Diagnostic images obtained at the time of the procedure were also reviewed for findings of tendinopathy, bursitis, and enthesopathy. Statistical analysis of differences in pain reduction was performed, as was analysis for association between pain relief and demographic variables of age, sex, previous injections, and ultrasound findings. Sixty-five injections met the inclusion criteria; 56 performed in women and nine performed in men (age range, 30-82 years; median, 53 years). Forty-one injections were into the greater trochanteric bursa and 24 into the subgluteus medius bursa. There was a statistically significant difference in pain reduction between greater trochanteric bursa and subgluteus medius bursa injections with a median pain reduction of 3 as opposed to 0 (p bursa may be more effective than injections into the subgluteus medius bursa for treatment of greater trochanteric pain syndrome.

  1. A user study of auditory, head-up and multi-modal displays in vehicles. (United States)

    Jakus, Grega; Dicke, Christina; Sodnik, Jaka


    This paper describes a user study on the interaction with an in-vehicle information system (IVIS). The motivation for conducting this research was to investigate the subjectively and objectively measured impact of using a single- or multi-modal IVIS while driving. A hierarchical, list-based menu was presented using a windshield projection (head-up display), auditory display and a combination of both interfaces. The users were asked to navigate a vehicle in a driving simulator and simultaneously perform a set of tasks of varying complexity. The experiment showed that the interaction with visual and audio-visual head-up displays is faster and more efficient than with the audio-only display. All the interfaces had a similar impact on the overall driving performance. There was no significant difference between the visual only and audio-visual displays in terms of their efficiency and safety; however, the majority of test subjects clearly preferred to use the multi-modal interface while driving. Copyright © 2014 Elsevier Ltd and The Ergonomics Society. All rights reserved.

  2. Identification of bacterial adhesins through phage display.


    Ana Tung Ching Ching


    A leptospirose é uma zoonose de importância mundial causada por bactérias do gênero Leptospira. No Brasil, a maioria dos casos é causada por L. interrogans sorovar Copenhageni. O objetivo destre trabalho foi identificar adesinas de leptospira pela técnica de Phage display. Bibliotecas com fragmentos genômicos resultaram na idendificação de ligantes de leptospira com afinidade por tecidos de hamster. Uma varredura dessas bibliotecas contra heparan sulfato proteoglicano (HSPG) identificou como ...

  3. Displaying New Measurements on WDS Orbit Plots (United States)

    Buchheim, Robert


    Students who observe and measure a visual double star often want to see how their measurement compares with the historical record and with the orbit (if one has been determined). This paper describes how PowerPoint’s graphical tools can display a newly-measured data point on the orbit plot from USNO’s 6th Orbit Catalog, and how a simple spreadsheet can transform measurements expressed as (rho,theta) into a Cartesian plot of the sky positions (E, N). This information is presented as a resource for future students.

  4. The many facets of auditory display (United States)

    Blattner, Meera M.


    In this presentation we will examine some of the ways sound can be used in a virtual world. We make the case that many different types of audio experience are available to us. A full range of audio experiences include: music, speech, real-world sounds, auditory displays, and auditory cues or messages. The technology of recreating real-world sounds through physical modeling has advanced in the past few years allowing better simulation of virtual worlds. Three-dimensional audio has further enriched our sensory experiences.

  5. Computing and Displaying Isosurfaces in R

    Directory of Open Access Journals (Sweden)

    Dai Feng


    Full Text Available This paper presents R utilities for computing and displaying isosurfaces, or three-dimensional contour surfaces, from a three-dimensional array of function values. A version of the marching cubes algorithm that takes into account face and internal ambiguities is used to compute the isosurfaces. Vectorization is used to ensure adequate performance using only R code. Examples are presented showing contours of theoretical densities, density estimates, and medical imaging data. Rendering can use the rgl package or standard or grid graphics, and a set of tools for representing and rendering surfaces using standard or grid graphics is presented.

  6. Integral photography capture and electronic holography display (United States)

    Ichihashi, Yasuyuki; Yamamoto, Kenji


    This paper describes electronic holography output of three-dimensional (3D) video with integral photography as input. A real-time 3D image reconstruction system was implemented by using a 4K (3840×2160) resolution IP camera to capture 3D images and converting them to 8K (7680×4320) resolution holograms. Multiple graphics processing units (GPUs) were used to create 8K holograms from 4K IP images. In addition, higher resolution holograms were created to successfully reconstruct live-scene video having a diagonal size of 6 cm using a large electronic holography display.

  7. Display advertising: Estimating conversion probability efficiently


    Safari, Abdollah; Altman, Rachel MacKay; Loughin, Thomas M.


    The goal of online display advertising is to entice users to "convert" (i.e., take a pre-defined action such as making a purchase) after clicking on the ad. An important measure of the value of an ad is the probability of conversion. The focus of this paper is the development of a computationally efficient, accurate, and precise estimator of conversion probability. The challenges associated with this estimation problem are the delays in observing conversions and the size of the data set (both...

  8. Creating Gaze Annotations in Head Mounted Displays

    DEFF Research Database (Denmark)

    Mardanbeigi, Diako; Qvarfordt, Pernilla


    , the user simply captures an image using the HMD’s camera, looks at an object of interest in the image, and speaks out the information to be associated with the object. The gaze location is recorded and visualized with a marker. The voice is transcribed using speech recognition. Gaze annotations can......To facilitate distributed communication in mobile settings, we developed GazeNote for creating and sharing gaze annotations in head mounted displays (HMDs). With gaze annotations it possible to point out objects of interest within an image and add a verbal description. To create an annota- tion...

  9. Three-dimensional displays and stereo vision. (United States)

    Westheimer, Gerald


    Procedures for three-dimensional image reconstruction that are based on the optical and neural apparatus of human stereoscopic vision have to be designed to work in conjunction with it. The principal methods of implementing stereo displays are described. Properties of the human visual system are outlined as they relate to depth discrimination capabilities and achieving optimal performance in stereo tasks. The concept of depth rendition is introduced to define the change in the parameters of three-dimensional configurations for cases in which the physical disposition of the stereo camera with respect to the viewed object differs from that of the observer's eyes.

  10. Paying Hypertension Research Subjects (United States)

    Casarett, David; Karlawish, Jason; Asch, David A


    CONTEXT Cash payments are often used to compensate subjects who participate in research. However, ethicists have argued that these payments might constitute an undue inducement. OBJECTIVES To determine whether potential subjects agree with theoretical arguments that a payment could be an undue inducement. DESIGN/SETTING/PARTICIPANTS Survey of 350 prospective jurors. MAIN OUTCOME MEASURES Belief that a $500 payment for research participation would impair their own, and others' ability to think carefully about the risks and benefits of a clinical trial. RESULTS Two hundred sixty-one jurors (74.6%) believed that a $500 payment would impair subjects' ability to think carefully about the risks and benefits of research. Ninety-six of 120 (80%) expressed this concern about subjects with a low income ($50,000). In contrast, only 69 (19.7%) of jurors believed that a $500 payment would influence them. Jurors who believed that this payment would influence them reported lower incomes and less education. CONCLUSION Members of the general public share ethical concerns about the influence of payments for research, although they believe that these concerns are more applicable to others than to themselves.

  11. Subjects, Models, Languages, Transformations

    NARCIS (Netherlands)

    Rensink, Arend; Bézivin, J.; Heckel, R.


    Discussions about model-driven approaches tend to be hampered by terminological confusion. This is at least partially caused by a lack of formal precision in defining the basic concepts, including that of "model" and "thing being modelled" - which we call subject in this paper. We propose a minimal

  12. Subjective Duration and Psychophysics (United States)

    Eisler, Hannes


    Three models are proposed to describe the strategy applied by a subject when he is confronted with two successive time intervals and is required to deal with some relation between them, for example, by telling which was the longer by adjusting the second to match the first. (Author)

  13. Barron's SAT subject test

    CERN Document Server

    Jansen, MA, Robert


    Includes one diagnostic test and three complete tests, all questions answered and explained, self-assessment guides, and subject reviews. Also features test strategies, QR codes to short instructional videos, and a detailed appendix with equations, physical constants, and a basic math review.

  14. Possibility of a Light Pulse with Speed Greater than c


    Zhou, Xian-jian


    In two models it is shown that a light pulse propagates from a vacuum into certain media with velocity greater than that of a light in a vacuum (c). By numerical calculation the propagating properties of such a light are given.

  15. Exploration of the Energy Efficiency of the Greater London Authority ...

    African Journals Online (AJOL)

    This research paper set out to explore the following research question: “what shape and form should a building be in order to achieve energy efficiency in the design and construction of the tall office building?” This involved the exploratory case study of a spheroid building, the Greater London Authority (GLA) building.

  16. Evolution of faster development does not lead to greater fluctuating ...

    Indian Academy of Sciences (India)


    Both strong directional selection and faster development are thought to destabilize development, giving rise to greater fluctuating asymmetry (FA), although there is no strong empirical evidence supporting this assertion. We compared. FA in sternopleural bristle number in four populations of Drosophila melanogaster ...


    African Journals Online (AJOL)



    Jul 11, 2010 ... Al-Shabaab, a fundamentalist group in Somalia immediately claimed responsibility. These events sparked widespread debate within scholarly circles as far as the counter-terrorism agenda in the Greater Horn of Africa is concerned. In recent years, terrorism has grown to become a vice of global magnitude.

  18. College Students with ADHD at Greater Risk for Sleep Disorders (United States)

    Gaultney, Jane F.


    The pediatric literature indicates that children with ADHD are at greater risk for sleep problems, daytime sleepiness, and some sleep disorders than children with no diagnosed disability. It has not been determined whether this pattern holds true among emerging adults, and whether comorbid sleep disorders with ADHD predict GPA. The present study…

  19. Introduction. China and the Challenges in Greater Middle East

    DEFF Research Database (Denmark)

    Sørensen, Camilla T. N.; Andersen, Lars Erslev; Jiang, Yang


    This collection of short papers is an outcome of an international conference entitled China and the Challenges in Greater Middle East, organized by the Danish Institute for International Studies and Copenhagen University on 10 November 2015. The conference sought answers to the following questions...

  20. Connectivity between the Algerian population of Greater Flamingo ...

    African Journals Online (AJOL)

    In the Mediterranean basin, Greater Flamingos Phoenicopterus roseus constitute a metapopulation with natal and breeding dispersal among colonies. However, the rate of exchange between European and North African colonies remains poorly known. In this paper, we document the wintering and breeding of European ...

  1. Adjustment of Business Expatriates in Greater China: A Strategic Perspective

    DEFF Research Database (Denmark)

    Selmer, Jan


    Research has found that due to similarities, firms which have gained business experience elsewhere in Greater China may exhibit relatively better performance in mainland China. Hence, the experience of business expatriates could be of strategic importance for the expansion path of their firms. Ba...

  2. Community Based Natural Resource Management in the Greater ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    In 2002, Mozambique, South Africa and Zimbabwe signed an agreement establishing the enlarged Greater Limpopo Trans Frontier Conservation Area. The area includes designated national parks and a matrix of land between them that is mostly under communal tenure. This project will apply scenario planning to help ...

  3. Radiographic features of tuberculous osteitis in greater trochanter and lschium

    Energy Technology Data Exchange (ETDEWEB)

    Hahm, So Hee; Lee, Ye Ri [Hanil Hospital Affiliated to KEPCO, Seoul (Korea, Republic of); Kim, Dong Jin; Sung, Ki Jun [Yonsei Univ. Wonju College of Medicine, Wonju (Korea, Republic of); Lim, Jong Nam [Konkuk Univ. College of Medicine, Seoul (Korea, Republic of)


    To evaluate, if possible, the radiographic features of tuberculous osteitis in the greater trochanter and ischium, and to determine the cause of the lesions. We reterospectively reviewed the plain radiographic findings of 14 ptients with histologically proven tuberculous osteitis involving the greater trochanter and ischium. In each case, the following were analyzed:morphology of bone destruction, including cortical erosion;periosteal reaction;presence or abscence of calcific shadows in adjacent soft tissue. On the basis of an analysis of radiographic features and correlation of the anatomy with adjacent structures we attempted to determine causes. Of the 14 cases evaluated, 12 showed varrious degrees of extrinsic erosion on the outer cortical bone of the greater trochanter and ischium ; in two cases, bone destruction was so severe that the radiographic features of advanced perforated osteomyelitis were simulated. In addition to findings of bone destruction, in these twelve cases, the presence of sequestrum or calcific shadows was seen in adjacent soft tissue. Tuberculous osteitis in the greater trochanter and ischium showed the characteristic findings of chronic extrinsic erosion. On the basis of these findings we can suggest that these lesions result from an extrinsic pathophysiologic cause such as adjacent bursitis.

  4. Control and Elimination of Helminth Zoonoses in the Greater ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    This project will contribute evidence to help control and eliminate schistosomiasis and liver fluke infections in the Greater Mekong Subregion. This economic area is bound by the Mekong River, covering 2.6 million square kilometres, and includes a combined population of 326 million in Burma, Cambodia, China, Laos, ...

  5. Hygrophoraceae of the Greater Antilles : Hygrocybe subgenus Hygrocybe (United States)

    Sharon A. Cantrell; D. Jean Lodge


    A key to six taxa of Hygrocybe, subgenus Hygrocybe, sections Chlorophanae and Hygrocybe is provided. One species is new and four species are reported for the first time from the Greater Antilles. The new species is H. chimaeroderma (section Chlarophanae). Hygrocybe acutoconica, H. calyptriformis and H. incolor (section Hygrocybe) are reported for the first time, and...

  6. Surgical anatomy of greater occipital nerve and its relation to ...

    African Journals Online (AJOL)

    Nancy Mohamed El Sekily


    Aug 19, 2014 ... Figure 1. A photograph of right half of head and neck specimen (posterior view) showing the greater occipital nerve (GON) emerging on the lower border of inferior oblique(IO) muscle in suboccipital triangle before piercing semispinalis capitis(SSC). (RC: rectus capitis minor and major –TR: trapezius). 200.

  7. Surgical treatment of high-standing greater trochanter. (United States)

    Takata, K; Maniwa, S; Ochi, M


    Eleven patients with high-standing greater trochanter (13 joints) aged 13-36 years underwent surgery. Distal transfer of the greater trochanter (group T) was performed in 4 patients (5 joints) and lateral displacement osteotomy (group L) in 7 (8 joints). The average follow-up duration was 13.4 years in group T and 5.9 years in group L. Clinical results were evaluated by the hip score according to Merle d'Aubigne. The mean hip score in group T was 13.4 points before operation and 15.4 points after operation, and in group L, 12.8 and 17.4 points, respectively. The postoperative clinical results of group L were significantly better than those of group T (P = 0.0494). In radiological evaluation, although the articulo-trochanteric distance (ATD) increased in both groups in group L it improved remarkably from 9.8 to 24.3, indicating a large descending distance of the greater trochanter. The lever arm ratio (LAR) did not change significantly in group T, but it decreased from 1.97 to 1.60 in group L (P = 0.004). This means that the lever arm of the abductors can certainly be extended by lateral displacement osteotomy. Lateral displacement osteotomy is the most effective procedure for high-standing greater trochanter.

  8. Community Based Natural Resource Management in the Greater ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    In 2002, Mozambique, South Africa and Zimbabwe signed an agreement establishing the enlarged Greater Limpopo Trans Frontier Conservation Area. The area includes ... Local level scenario planning, iterative assessment and adaptive management : final technical report, July 2006 to November 2011. Download PDF.

  9. Editorial Greater international exposure for African range and forage ...

    African Journals Online (AJOL)

    Password, Remember me, or Register. DOWNLOAD FULL TEXT Open Access DOWNLOAD FULL TEXT Subscription or Fee Access. Editorial Greater international exposure for African range and forage science. Susi Vetter. Abstract. Click on the link to view the editorial. African Journal of Range & Forage Science 2009, ...

  10. at Nungua in the Greater Accra Region of Ghana

    African Journals Online (AJOL)


    The Mukwe lagoon and adjoining wetlandsnear Nungua in the Greater Accra Region of Ghana is one of the many coastal wetlands in Ghana which .... of sustainable use, as enjoined to date, the first five (i.e., Keta, Songor, by the Ramsar Convention. ... study was conducted over a 6-month period. To determine the effects of ...

  11. The first recorded reproduction of the Greater Flamingo ...

    African Journals Online (AJOL)

    Following several decades of unsuccessful attempts at locating breeding colonies of the Greater Flamingo Phoenicopterus roseus in Algeria, breeding was recorded on a natural islet of Garaet Ezzemoul, a seasonal salt lake near the town of Aïn M'lila in the Hauts Plateaux. This successful mass breeding event by at least 5 ...

  12. Ecology of greater sage-grouse in the Dakotas (United States)

    Christopher C. Swanson


    Greater sage-grouse (Centrocercus urophasianus) populations and the sagebrush (Artemisia spp.) communities that they rely on have dramatically declined from historic levels. Moreover, information regarding sage-grouse annual life-history requirements at the eastern-most extension of sagebrush steppe communities is lacking....

  13. Male greater sage-grouse movements among leks (United States)

    Aleshia L. Fremgen; Christopher T. Rota; Christopher P. Hansen; Mark A. Rumble; R. Scott Gamo; Joshua J. Millspaugh


    Movements among leks by breeding birds (i.e., interlek movements) could affect the population's genetic flow, complicate use of lek counts as a population index, and indicate a change in breeding behavior following a disturbance. We used a Bayesian multi-state mark-recapture model to assess the daily probability of male greater sage-grouse (Centrocercus...

  14. The Educational Afterlife of Greater Britain, 1903-1914 (United States)

    Gardner, Philip


    Following its late nineteenth-century emergence as an important element within federalist thinking across the British Empire, the idea of Greater Britain lost much of its political force in the years following the Boer War. The concept however continued to retain considerable residual currency in other fields of Imperial debate, including those…

  15. Prey selection by a reintroduced lion population in the Greater ...

    African Journals Online (AJOL)

    Lion prey selection was studied on the Greater Makalali Conservancy (140 km2), Limpopo Province, South Africa, in order to assist with management strategies. Monitoring was carried out between February 1998 and December 2001. Lion killed 15 species, with warthog, blue wildebeest, Burchell's zebra, kudu and ...

  16. The Mesozoic-Cenozoic tectonic evolution of the Greater Caucasus

    NARCIS (Netherlands)

    Saintot, A.N.; Brunet, M.F.; Yakovlev, F.; Sébrier, M.; Stephenson, R.A.; Ershov, A.V.; Chalot-Prat, F.; McCann, T.


    The Greater Caucasus (GC) fold-and-thrust belt lies on the southern deformed edge of the Scythian Platform (SP) and results from the Cenoozoic structural inversion of a deep marine Mesozoic basin in response to the northward displacement of the Transcaucasus (lying south of the GC subsequent to the

  17. Eyepiece-type full-color electro-holographic display for binocular vision (United States)

    Yoneyama, Takuo; Yang, Chanyoung; Sakamoto, Yuji; Okuyama, Fumio


    Head-mounted type 3-D displays are expected to be useful with Augmented Reality techniques to provide visual information. However, because these displays use the stereoscopic method to provide 3-D vision, observers tend to experience eye discomfort when viewing 3-D images due to the disparity between accommodation and convergence. Electro-holography is a rival technique that displays holograms on electrical devices such as a spatial light modulator and enables observers to view ideal 3-D images in comfort for many hours. In the current study, we applied the holography technique to an eyepiece-type display in order to solve the disparity problem. Our system can represent 3-D images at arbitrary depths and displays large reconstructed images by using a Fourier transform optical system. We also adopted the time division color method to reconstruct full-color images. In computer generated holography, holograms for each color are calculated considering with the distance between their wavelength. In this paper, we describe our calculation algorithm and report the fabrication of an eyepiecetype full color electro-holographic display for binocular vision. To confirm the effectiveness of the proposed system, the reconstructed images were evaluated both objectively and subjectively. Results of experiments show that reconstructed full-color images are located at the correct depth.

  18. Effects of display design on performance in a simulated ship navigation environment. (United States)

    Sauer, Juergen; Wastell, David G; Hockey, G Robert J; Crawshaw, C Martin; Ishak, Mai; Downing, Jonathon C


    Although automation is playing an increasing role on the ship's bridge, empirical research on the effectiveness of alternative bridge designs is limited. In this paper, we describe an experimental study of the benefits of integrated information display, using a computerized simulation of a highly automated ship's bridge. The study compared three types of interface design, which presented radar and electronic chart information to the operator in different ways: (a) integrated display, (b) functionally-separate display, and (c) spatially-separate display. Effects were examined in relation to time on watch and scenario complexity. Following extensive training on the task, 39 participants were tested over a 4-h experimental session, during which they encountered a sequence of collision scenarios of varying complexity. Using a dual-task methodology, a range of measures of primary and secondary task performance were taken, together with assessment of information sampling behaviour and subjective operator state (workload, fatigue, anxiety and situation awareness). The results indicated slight navigational advantages of the integrated display over the two alternative display types, although it also incurred higher levels of operator cost, particularly fatigue. There were no marked effects of time on watch, but more complex scenarios were associated with impaired performance, increased workload and reduced situation awareness. Overall, the findings have suggested some benefits of integrating primary information sources in a ship's bridge environment. The study further confirms the value of experimental simulations as tools for investigating design issues for ship's bridge automation.

  19. The relationship between ambient illumination and psychological factors in viewing of display Images (United States)

    Iwanami, Takuya; Kikuchi, Ayano; Kaneko, Takashi; Hirai, Keita; Yano, Natsumi; Nakaguchi, Toshiya; Tsumura, Norimichi; Yoshida, Yasuhiro; Miyake, Yoichi


    In this paper, we have clarified the relationship between ambient illumination and psychological factors in viewing of display images. Psychological factors were obtained by the factor analysis with the results of the semantic differential (SD) method. In the psychological experiments, subjects evaluated the impressions of displayed images with changing ambient illuminating conditions. The illumination conditions were controlled by a fluorescent ceiling light and a color LED illumination which was located behind the display. We experimented under two kinds of conditions. One was the experiment with changing brightness of the ambient illumination. The other was the experiment with changing the colors of the background illumination. In the results of the experiment, two factors "realistic sensation, dynamism" and "comfortable," were extracted under different brightness of the ambient illumination of the display surroundings. It was shown that the "comfortable" was improved by the brightness of display surroundings. On the other hand, when the illumination color of surroundings was changed, three factors "comfortable," "realistic sensation, dynamism" and "activity" were extracted. It was also shown that the value of "comfortable" and "realistic sensation, dynamism" increased when the display surroundings were illuminated by the average color of the image contents.

  20. MEMS scanned laser head-up display (United States)

    Freeman, Mark O.


    Head-up displays (HUD) in automobiles and other vehicles have been shown to significantly reduce accident rates by keeping the driver's eyes on the road. The requirements for automotive HUDs are quite demanding especially in terms of brightness, dimming range, supplied power, and size. Scanned laser display technology is particularly well-suited to this application since the lasers can be very efficiently relayed to the driver's eyes. Additionally, the lasers are only turned on where the light is needed in the image. This helps to provide the required brightness while minimizing power and avoiding a background glow that disturbs the see-through experience. Microvision has developed a couple of HUD architectures that are presented herein. One design uses an exit pupil expander and relay optics to produce a high quality virtual image for built-in systems where the image appears to float above the hood of the auto. A second design uses a patented see-through screen technology and pico projector to make automotive HUDs available to anyone with a projector. The presentation will go over the basic designs for the two types of HUD and discuss design tradeoffs.

  1. Home Energy Displays: Consumer Adoption and Response

    Energy Technology Data Exchange (ETDEWEB)

    LaMarche, J.; Cheney, K.; Akers, C.; Roth, K.; Sachs, O.


    The focus of this project was to investigate the factors influencing consumer adoption of Home Energy Displays (HEDs) and to evaluate electricity consumption in households with basic HEDs versus enhanced feedback methods - web portals or alerts. We hypothesized that providing flexible and relatable information to users, in addition to a basic HED, would make feedback more effective and achieve persistent energy savings. In Phase I, we conducted three user research studies and found preferences for aesthetically pleasing, easy to understand feedback that is accessible through multiple media and offered free of charge. The deployment of HEDs in 150 households planned for Phase II encountered major recruitment and HED field deployment problems. First, after extensive outreach campaigns to apartment complexes with 760 units, only 8% of building's tenants elected to receive a free HED in their homes as part of the field study. Second, the HED used, a leading market model, had a spectrum of problems, including gateway miscommunications, failure to post to a data-hosting third party, and display malfunctions. In light of these challenges, we are pursuing a modified study investigating the energy savings of a web portal versus alert-based energy feedback instead of a physical HED.

  2. Colour unmasks dark targets in complex displays. (United States)

    Kingdom, Frederick A A; Kasrai, Reza


    Recent studies have suggested that colour (meaning chromatic) variations help the visual system segment luminance-variegated displays into their illumination and reflectance layers. This leads to the prediction that colour variations should unmask partially camouflaged achromatic transparencies on luminance-variegated backgrounds. We used 'Mondrian-like' backgrounds that were either achromatic, i.e., varying only in luminance, or chromatic, which in our stimuli meant varying in both luminance and colour. Both achromatic and chromatic backgrounds had the same luminance distribution. Thresholds for detecting simulated transparency targets were found to be lower when on the chromatic compared to achromatic backgrounds. We hypothesised that the chromatic-background advantage resulted from the extra cue provided by colour as to which borders were background and which transparency, predicting that (a) randomising the colours on either side of the transparency border, (b) rotating the target to destroy its X-junctions, and (c) viewing the target eccentrically, would each destroy the chromatic-background advantage. However, none of these predictions was upheld. We suggest therefore that the chromatic-background advantage is due to a low-level, rather than border-disambiguation mechanism. We suggest that chromatic variations reduce the noise, but not the signal, in the mechanism that detects dark targets in complex displays.

  3. Reconfigurable Braille display with phase change locking (United States)

    Soule, Cody W.; Lazarus, Nathan


    Automatically updated signs and displays for sighted people are common in today’s world. However, there is no cheap, low power equivalent available for the blind. This work demonstrates a reconfigurable Braille cell using the solid-to-liquid phase change of a low melting point alloy as a zero holding power locking mechanism. The device is actuated with the alloy in the liquid state, and is then allowed to solidify to lock the Braille dot in the actuated position. A low-cost manufacturing process is developed that includes molding of a rigid silicone to create pneumatic channels, and bonding of a thin membrane of a softer silicone on the surface for actuation. A plug of Field’s metal (melting point 62 °C) is placed in the pneumatic channels below each Braille dot to create the final device. The device is well suited for low duty cycle operation in applications such as signs, and is able to maintain its state indefinitely without additional power input. The display requires a pneumatic pressure of only 24 kPa for actuation, and reconfiguration has been demonstrated in less than a minute and a half.

  4. Response terminated displays unload selective attention

    Directory of Open Access Journals (Sweden)

    Zachary Joseph Jackson Roper


    Full Text Available Perceptual load theory successfully replaced the early versus late selection debate by appealing to adaptive control over the efficiency of selective attention. Early selection is observed unless perceptual load (p-Load is sufficiently low to grant attentional ‘spill-over‘ to task-irrelevant stimuli. Many studies exploring load theory have used limited display durations that perhaps impose artificial limits on encoding processes. We extended the exposure duration in a classic p-Load task to alleviate temporal encoding demands that may otherwise tax mnemonic consolidation processes. If the load effect arises from perceptual demands alone, then freeing-up available mnemonic resources by extending the exposure duration should have little effect. The results of Experiment 1 falsify this prediction. We observed a reliable flanker effect under high p-Load, response-terminated displays. Next, we orthogonally manipulated exposure duration and task-relevance. Counter-intuitively, we found that the likelihood of observing the flanker effect under high p-Load resides with the duration of the task-relevant array, not the flanker itself. We propose that stimulus and encoding demands interact to produce the load effect. Our account clarifies how task parameters differentially impinge upon cognitive processes to produce attentional ‘spill-over’ by appealing to visual short-term memory as an additional processing bottleneck when stimuli are briefly presented.

  5. OLED Display For Real Time Vision System

    Directory of Open Access Journals (Sweden)

    Sandhyalakshmi Narayanan


    Full Text Available This innovative glass design will carry an OLED based display controlled via nano Ardiuno board having Bluetooth connectivity with a Smartphone to exchange information along with onboard accelerometer. We are using a tilt angle sensor for detecting if the driver is feeling drowsy. An alcohol sensor has been used to promote the safe driving habit. The glasses will be getting latest updates about the current speed of the vehicle navigation directions nearby or approaching sign broads or services like petrol pumps. Itll also display information like incoming calls or received messages. All this information will be obtained through a Smartphone connected via Bluetooth. Also the car mileage can be monitored with help of fuel sensor as the consumption of fuel is directly related to it. Abnormalities if detected will be immediately notified in the glasses. Also the angle of the tilt angle sensor can be defined and set by the user according to his needs. Also the main idea of using OLED glasses is that it is organic thereby helps in reducing the carbon footprint and is quite slim. Therefore it can be easily mounted on the specs without making it heavy. Also they higher level of flexibility and have low power drain and energy consumption

  6. Display conditions that influence wayfinding in virtual environments (United States)

    Browse, Roger A.; Gray, Derek W. S.


    As virtual environments may be used in training and evaluation for critical real navigation tasks, it is important to investigate the factors influencing navigational performance in virtual environments. We have carried out controlled experiments involving two visual factors known to induce or sustain vection, the illusory perception of self-motion. The first experiment had subjects navigate mazes with either a narrow or wide field of view. We measured the percentage of wrong turns, the total time taken for each attempt, and we examined subjects' drawings of the mazes. We found that a wide field of view can have a substantial effect on navigational abilities, even when the wide field of view does not offer any additional clues to the task, and really only provides a larger view of blank walls on the sides. The second experiment evaluated the effect of perspective accuracy in the scene by comparing the use of displays that were corrected for changing head position against those that were not corrected. The perspective corrections available through headtracking did not appear have any influence on navigational abilities. Another component of our study suggests that during navigation in a virtual environment, memory for directions may not be as effective as it could be with supplemental symbolic representations.

  7. An Iterative Approach To Development Of A PACS Display Workstation (United States)

    O'Malley, Kathleen G.


    An iterative prototyping approach has been used in the development of requirements for a new user interface for the display workstation in the CommView system product line. This approach involves many steps, including development of the preliminary concept, validation and ranking of ideas within that concept, prototyping, evaluating, and revising. We describe in this paper the process undertaken to design and evaluate the new user interface. Staff at Abbott Northwestern Hospital, Bowman Gray/Baptist Hospital Medical Center, Duke University Medical Center, Georgetown University Medical Center and Robert Wood Johnson University Hospital participated in various aspects of the study. The subject population included radiologists, residents, technologists and staff physicians from several areas in the hospitals. Subjects participated in in-depth interviews, answered questionnaires, and performed specific tasks, to aid our development process. We feel this method has resulted in a product that will achieve a high level of customer satisfaction, developed in less time than a traditional approach. Some of the reasons we believe in the value of this approach are: • Users may not be able to describe their needs in terms that designers are expecting, leading to misinterpretation; • Users may not be able to choose between options without seeing them; • Users needs and choices evolve with experience; • Users true choices and needs may not seem logical to one not performing those tasks (i.e., the designers).

  8. Investigation of perceived image quality and colourfulness in mobile displays for different cultures, ambient illumination, and resolution. (United States)

    Lin, Po-Hung; Patterson, Patrick


    This study explored the effects of culture, ambient illumination, and resolution on perceived image quality and colourfulness of mobile displays. Thirty Taiwanese and 30 American students participated in the experiment. Two types of culture (Taiwanese and American), two types of illumination level (1500 lux and 7000 lux), and five types of resolution level (320×240, 260×208, 200×160, 140×112, and 80×64) were investigated in the experiment. Interactions between culture and resolution, and between illumination and resolution, were found for both perceived image quality and colourfulness. The results indicated that subjects were able to detect smaller differences in perceived image quality but not for colourfulness, and Taiwanese subjects could detect smaller differences than could the American subjects for both perceived image quality and colourfulness. The results further indicated that Taiwanese subjects were able to detect smaller differences at most of the resolution levels for colourfulness in 1500 lux than were the American subjects. This study found, from culture differences and ergonomics considerations, that Taiwanese subjects could detect smaller differences than could American subjects when evaluating perceived image quality and colourfulness on mobile displays. Mobile display manufacturers can use the results of this study as a reference for future mobile display design.

  9. Advances and trends of head-up and head-down display systems in automobiles (United States)

    Betancur, J. Alejandro; Osorio-Gomez, Gilberto; Agudelo, J. David


    Currently, in the automotive industry the interaction between drivers and Augmented Reality (AR) systems is a subject of analysis, especially the identification of advantages and risks that this kind of interaction represents. Consequently, this paper attempts to put in evidence the potential applications of Head-Up (Display (HUD) and Head-Down Display (HDD) systems in automotive vehicles, showing applications and trends under study. In general, automotive advances related to AR devices suggest the partial integration of the HUD and HDD in automobiles; however, the right way to do it is still a moot point.

  10. Displays. [three dimensional analog visual system for aiding pilot space perception (United States)


    An experimental investigation made to determine the depth cue of a head movement perspective and image intensity as a function of depth is summarized. The experiment was based on the use of a hybrid computer generated contact analog visual display in which various perceptual depth cues are included on a two dimensional CRT screen. The system's purpose was to impart information, in an integrated and visually compelling fashion, about the vehicle's position and orientation in space. Results show head movement gives a 40% improvement in depth discrimination when the display is between 40 and 100 cm from the subject; intensity variation resulted in as much improvement as head movement.

  11. Mars Observer screen display design for a multimission environment (United States)

    Chafin, Roy L.


    The Multi Mission Control Team (MMCT) is responsible for support to real time operations of the Mars Observer Mission. The team has the responsibility for monitoring the ground data system for the integrity of the telemetry and command data links. It also supports the Mars Observers Spacecraft Team in monitoring spacecraft events. The Data Monitor and Display subsystem (DMD) workstation provides the data interface with the ground data system. DMD workstation displays were developed to support the Mission Controllers in accomplishing their assigned tasks for supporting the Mars Observer mission. The display design concepts that were used in the Mar Observer MMCT displays to minimize the cognitive demands on the controllers and enhance the MMCT operations were presented. The Data Monitor and Display subsystem (DMD) is the controllers window into the spacecraft and the ground data system. The DMD is a workstation that provides a variety of formatted data displays to the controller. The displays present both spacecraft telemetry data and ground system monitor data. Some displays are preplanned and developed prior to the operations in which they are used. These are called fixed displays and are quite versatile in format and content. Other displays and plots can be created in real time. These displays have limited formats but flexibility in content. These are called list or message displays. They can be rapidly generated by the controller as needed. The MMCT display repertoire provides a mix of displays appropriate to the needs of the MMCT controllers.

  12. Effect of Display Technology on Perceived Scale of Space. (United States)

    Geuss, Michael N; Stefanucci, Jeanine K; Creem-Regehr, Sarah H; Thompson, William B; Mohler, Betty J


    Our goal was to evaluate the degree to which display technologies influence the perception of size in an image. Research suggests that factors such as whether an image is displayed stereoscopically, whether a user's viewpoint is tracked, and the field of view of a given display can affect users' perception of scale in the displayed image. Participants directly estimated the size of a gap by matching the distance between their hands to the gap width and judged their ability to pass unimpeded through the gap in one of five common implementations of three display technologies (two head-mounted displays [HMD] and a back-projection screen). Both measures of gap width were similar for the two HMD conditions and the back projection with stereo and tracking. For the displays without tracking, stereo and monocular conditions differed from each other, with monocular viewing showing underestimation of size. Display technologies that are capable of stereoscopic display and tracking of the user's viewpoint are beneficial as perceived size does not differ from real-world estimates. Evaluations of different display technologies are necessary as display conditions vary and the availability of different display technologies continues to grow. The findings are important to those using display technologies for research, commercial, and training purposes when it is important for the displayed image to be perceived at an intended scale. © 2015, Human Factors and Ergonomics Society.

  13. [Subjective cognition in schizophrenia]. (United States)

    Potvin, S; Aubin, G; Stip, E


    Given the extent, magnitude and functional significance of the neurocognitive deficits of schizophrenia, growing attention has been paid recently to patients' self-awareness of their own deficits. Thus far, the literature has shown either that patients fail to recognize their cognitive deficits or that the association between subjective and objective cognition is weak in schizophrenia. The reasons for this lack of consistency remain unexplained but may have to do, among others, with the influence of potential confounding clinical variables and the choice of the scale used to measure self-awareness of cognitive deficits. In the current study, we sought to examine the relationships between subjective and objective cognitive performance in schizophrenia, while controlling for the influence of sociodemographic and psychiatric variables. Eighty-two patients with a schizophrenia-spectrum disorder (DSM-IV criteria) were recruited. Patients' subjective cognitive complaints were evaluated with the Subjective Scale to Investigate Cognition in Schizophrenia (SSTICS), the most frequently used scale to measure self-awareness of cognitive deficits in schizophrenia. Neurocognition was evaluated with working memory, planning and visual learning tasks taken from Cambridge Neuropsychological Tests Automated Battery. The Stroop Color-Word test was also administered. Psychiatric symptoms were evaluated with the Positive and Negative Syndrome Scale and the Calgary Depression Scale for Schizophrenia. The relationships between subjective and objective cognition were evaluated with multivariate hierarchic linear regression analyses, taking into consideration potential confounders such as sociodemographic and psychiatric variables. Finally, a factor analysis of the SSTICS was performed. For the SSTICS total score, the regression analysis produced a model including two predictors, namely visual learning and Stoop interference performance, explaining a moderate portion of the variance

  14. Effectiveness of short message service reminder scheme in Greater Hyderabad Municipal Corporation for children's vaccination: A telephonic survey

    Directory of Open Access Journals (Sweden)

    Shakeel Anjum


    Full Text Available Background: Greater Hyderabad Municipal Corporation (GHMC cares for every child. It has introduced a short message service (SMS reminder scheme for children's vaccination, to make their life healthier and secure. SMS as a reminder tool can be extremely effective in health care. Aim: To assess the effectiveness of vaccination SMS reminder scheme by GHMC on mobile phones of parents. Materials and Methods: A cross-sectional study was conducted on 349 subjects whose children were born between January 1, 2014 and June 30, 2014 using telephonic survey method from five hospitals selected randomly. Telephone calls were made to interview using a structured questionnaire. Results: Among 349 subjects, 279 participated in the study for phone interview and 70 subjects (20.1% did not participate. Among 279 subjects, 21.8% (76 subjects received SMS from GHMC whereas 43.8% (158 did not receive, 4.58% (16 subjects do not know how to read SMS, 7.2% (25 subjects did not see the messages and 2.6% (9 subjects were not sure if they were receiving the SMS from GHMC or not. Majority of subjects 71.9% wished to get the reminder SMS from GHMC regularly. Conclusion: The use of SMS reminder scheme for children's vaccination was encouraged by majority of subjects. However, the GHMC scheme was efficient in reaching only 21.8% of the subjects.

  15. Interaction, transference, and subjectivity

    DEFF Research Database (Denmark)

    Lundgaard Andersen, Linda


    Fieldwork is one of the important methods in educational, social, and organisational research. In fieldwork, the researcher takes residence for a shorter or longer period amongst the subjects and settings to be studied. The aim of this is to study the culture of people: how people seem to make...... sense of their lives and which moral, professional, and ethical values seem to guide their behaviour and attitudes. In fieldwork, the researcher has to balance participation and observation in her attempts at representation. Consequently, the researcher’s academic and life-historical subjectivity...... are important filters for fieldwork. In general, fieldwork can be understood as processes where field reports and field analysis are determined by how the researcher interacts with and experiences the field, the events and informants in it, and how she subsequently develops an ethnography. However, fieldwork...

  16. Writing and the 'Subject'

    DEFF Research Database (Denmark)

    Greve, Charlotte

    /reading subject) manifests itself in the material mark on the page. The study shows how this indexical reference to a ‘subject’ is manipulated and used as a mask through which a writer/painter can perform a certain ‘subject’. Through analyses of the various levels on which the ‘subject’ is represented...... in the early as well as the contemporary avant-garde, it becomes clear that the ‘subject’ is an unstable category that can be exposed to manipulation and play. Handwriting is performing as a signature (as an index), but is at the same time similar to the signature of a subject (an icon) and a verbal construct...

  17. Comparing perceptual judgment and subjective measures of spatial awareness. (United States)

    Bolton, Matthew L; Bass, Ellen J


    Spatial awareness is important in domains where safety hinges on human operators keeping track of the relative locations of objects in the environment. While a variety of subjective and judgment-based measures have been used to evaluate spatial awareness, none have probed all three of its levels: (1) identification of environmental objects, (2) their current locations relative to the operator, and (3) their relative positions over time. This work compares new judgment-based measures of spatial awareness that probe all three levels of spatial awareness to conventional subjective measures. In the evaluation of 14 configurations of Synthetic Vision Systems head down displays (seven terrain textures and two Geometric Fields of View (GFOVs)), 18 pilots made four types of judgments (relative angle, distance, height, and abeam time) regarding the location of terrain points displayed in 112 5-s, non-interactive simulations. They also provided subjective demand, awareness, clutter, SA-SWORD, and preferred GFOV measures. Correlation analyses revealed that displays that received higher awareness and SA-SWORD subjective ratings were associated with smaller errors in abeam time judgments and, for SA-SWORD, smaller errors in relative distance judgments. Thus SA-SWORD provides insight into level 2 spatial awareness and both SA-SWORD and awareness provide insight into level 3 spatial awareness. ANOVA and chi(2) analyses revealed comparable results between display configurations that produced the minimum error in judgments and those recommended by the awareness, SA-SWORD, and preferred GFOV measures.

  18. A dynamic display keyboard and a key for use in a dynamic display keyboard

    DEFF Research Database (Denmark)


    The invention relates to a dynamic display keyboard comprising a plurality of key elements, each key element comprises a transmitting part capable of transmitting at least a part of light incident on the transmitting part; a mat comprising a plurality of elevated elements capable of providing...... part; at least one display unit capable of providing light to the plurality of transmitting parts via the optical element; and wherein the light provided to a transmitting part defines a visual value of the corresponding key element.; In this way, the keyboard is dynamic and further is able to provide...

  19. Applications of yeast surface display for protein engineering (United States)

    Cherf, Gerald M.; Cochran, Jennifer R.


    The method of displaying recombinant proteins on the surface of Saccharomyces cerevisiae via genetic fusion to an abundant cell wall protein, a technology known as yeast surface display, or simply, yeast display, has become a valuable protein engineering tool for a broad spectrum of biotechnology and biomedical applications. This review focuses on the use of yeast display for engineering protein affinity, stability, and enzymatic activity. Strategies and examples for each protein engineering goal are discussed. Additional applications of yeast display are also briefly presented, including protein epitope mapping, identification of protein-protein interactions, and uses of displayed proteins in industry and medicine. PMID:26060074

  20. Selection of cotton genotypes for greater length of fibers

    Directory of Open Access Journals (Sweden)

    Luiz Paulo de Carvalho


    Full Text Available In cotton breeding programs, it is necessary to identify genotypes with predictable behavior on the length of fibers, and which are responsive to environmental variations, in specific or broad conditions. The aim of this study was to employ the methodology of mixed models for simultaneous selection of cotton genotypes with greater length of fibers, adaptability and stability. It was evaluated 36 lines in three trials located in Apodi (2013 and 2014 and Santa Helena (2013, in a randomized block design with two replications. Genetic parameters were estimated by the restricted maximum likelihood/best linear unbiased predictor method (REML/BLUP and the selection was based on the method of harmonic mean of the relative performance of genetic values. The genotypes CNPA 2012-55, CNPA 2012-58, CNPA 2012-62 and CNPA 2012-64 can be grown in all tested environments, since they gather greater length of fibers, stability and adaptability.