WorldWideScience

Sample records for refreshed display computer

  1. Refreshing Refreshable Braille Displays.

    Science.gov (United States)

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

    2015-01-01

    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.

  2. Refreshable Braille displays using EAP actuators

    Science.gov (United States)

    Bar-Cohen, Yoseph

    2010-04-01

    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.

  3. Application of EAP materials toward a refreshable Braille display

    Science.gov (United States)

    Di Spigna, N.; Chakraborti, P.; Yang, P.; Ghosh, T.; Franzon, P.

    2009-03-01

    The development of a multiline, refreshable Braille display will assist with the full inclusion and integration of blind people into society. The use of both polyvinylidene fluoride (PVDF) film planar bending mode actuators and silicone dielectric elastomer cylindrical tube actuators have been investigated for their potential use in a Braille cell. A liftoff process that allows for aggressive scaling of miniature bimorph actuators has been developed using standard semiconductor lithography techniques. The PVDF bimorphs have been demonstrated to provide enough displacement to raise a Braille dot using biases less than 1000V and operating at 10Hz. In addition, silicone tube actuators have also been demonstrated to achieve the necessary displacement, though requiring higher voltages. The choice of electrodes and prestrain conditions aimed at maximizing axial strain in tube actuators are discussed. Characterization techniques measuring actuation displacement and blocking forces appropriate for standard Braille cell specifications are presented. Finally, the integration of these materials into novel cell designs and the fabrication of a prototype Braille cell are discussed.

  4. A system for tracking braille readers using a Wii Remote and a refreshable braille display.

    Science.gov (United States)

    Aranyanak, Inthraporn; Reilly, Ronan G

    2013-03-01

    This article describes a cheap and easy-to-use finger-tracking system for studying braille reading. It provides improved spatial and temporal resolution over the current available solutions and can be used with either a refreshable braille display or braille-embossed paper. In conjunction with a refreshable braille display, the tracking system has the unique capacity to implement display-change paradigms derived from sighted reading research. This will allow researchers to probe skilled braille reading in significantly more depth than has heretofore been possible.

  5. Characterization of a pneumatic balloon actuator for use in refreshable Braille displays.

    Science.gov (United States)

    Fan, Richard E; Feinman, Adam M; Wottawa, Christopher; King, Chih-Hung; Franco, Miguel L; Dutson, Erik P; Grundfest, Warren S; Culjat, Martin O

    2009-01-01

    Many existing refreshable Braille display technologies are costly or lack robust performance. A process has been developed to fabricate consistent and reliable pneumatic balloon actuators at low material cost, using a novel manufacturing process. This technique has been adapted for use in refreshable Braille displays that feature low power consumption, ease of manufacture and small form factor. A prototype refreshable cell, conforming to American Braille standards, was developed and tested. The cell was fabricated from molded PDMS to form balloon actuators with a spin-coated silicone film, and fast pneumatic driving elements and an electronic control system were developed to drive the Braille dots. Perceptual testing was performed to determine the feasibility of the approach using a single blind human subject. The subject was able to detect randomized Braille letters rapidly generated by the actuator with 100% character detection accuracy.

  6. A new bistable electroactive polymer for prolonged cycle lifetime of refreshable Braille displays

    Science.gov (United States)

    Ren, Zhi; Niu, Xiaofan; Chen, Dustin; Hu, Wei; Pei, Qibing

    2014-03-01

    ABSTRACT: Bistable electroactive polymers (BSEP) amalgamating electrically induced large-strain actuation and shape memory effect present a unique opportunity for refreshable Braille displays. A new BSEP material with long-chain crosslinkers to achieve prolonged cycle lifetime of refreshable Braille displays is reported here. The modulus of the BSEP material decreases by more than three orders of magnitude from a rigid, plastic state to a rubbery state when heated above the polymer's glass transition temperature. In its rubbery state, the polymer film can be electrically actuated to buckle convexly when a high voltage is applied across a circular active area. Modifying the concentration of long-chain crosslinkers in the polymer allows not only for fine-tuning of the polymer's glass transition temperature and elasticity in the rubbery state, but also enhancement of the actuation stability. For a raised height of 0.4 mm by a Braille dot with a 1.3 mm diameter, actuation can be repeated over 2000 cycles at 70°C in the rubbery state. The actuated dome shape can be fixed by cooling the polymer below the glass transition temperature. This refreshable rigid-to-rigid actuation simultaneously provides large-strain actuation and large force support. Devices capable of displaying Braille characters over a page-size area consisting of 324 Braille cells have been fabricated.

  7. Bistable electroactive polymer for refreshable Braille display with improved actuation stability

    Science.gov (United States)

    Niu, Xiaofan; Brochu, Paul; Stoyanov, Hristiyan; Yun, Sung Ryul; Pei, Qibing

    2012-04-01

    Poly(t-butyl acrylate) is a bistable electroactive polymer (BSEP) capable of rigid-to-rigid actuation. The BSEP combines the large-strain actuation of dielectric elastomers with shape memory property. We have introduced a material approach to overcome pull-in instability in poly(t-butyl acrylate) that significantly improves the actuation lifetime at strains greater than 100%. Refreshable Braille display devices with size of a smartphone screen have been fabricated to manifest a potential application of the BSEP. We will report the testing results of the devices by a Braille user.

  8. The integration of novel EAP-based Braille cells for use in a refreshable tactile display

    Science.gov (United States)

    Di Spigna, N.; Chakraborti, P.; Winick, D.; Yang, P.; Ghosh, T.; Franzon, P.

    2010-04-01

    Structures demonstrating the viability of both the hydraulic and latching Braille dot, and the dielectric elastomer fiber Braille dot have been fabricated and characterized. A hydraulic proof-of-concept structure has achieved the necessary volumetric change required to lift a Braille dot over 0.5mm at voltages under 1000V and at speeds under 100ms. Long bimorphs have been fabricated that demonstrate large tip displacements over 2mm that could be used to mechanically latch the Braille rod in the 'up' position to achieve the force requirement. The addition of radial prestrain in dielectric elastomer tubes has reduced the wall thickness and directed the strain in the axial direction which has had a dramatic impact on their resulting characteristics. The required bias voltage for the dielectric elastomer fiber Braille dot has been reduced from 15.5kV to 8.75kV while the Braille head tip displacement of a fabricated prototype has almost tripled on average and now also exceeds the required displacement for a refreshable Braille display. Finally, potential solutions to the current shortcomings of both designs in meeting all of the requirements for such a display are discussed.

  9. Augmenting digital displays with computation

    Science.gov (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

  10. INFORMATION DISPLAY: CONSIDERATIONS FOR DESIGNING COMPUTER-BASED DISPLAY SYSTEMS.

    Energy Technology Data Exchange (ETDEWEB)

    O' HARA,J.M.; PIRUS,D.; BELTRATCCHI,L.

    2004-09-19

    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.

  11. Three-dimensional display on computer screen free from accommodation-convergence conflict

    Science.gov (United States)

    Sun, Deen; Wang, Chenxu; Teng, Dongdong; Liu, Lilin

    2017-05-01

    Existing commercial three dimensional (3D) display technologies for computer screens, such as stereoscopic and auto-stereoscopic methods, are based on binocular parallax theory. Due to the inherent accommodation-convergence conflict, (auto-) stereoscopic displays are always suffering the visual fatigue problem. Through sequentially gating two different segments of each eye's aperture of the viewer and refreshing the display contents simultaneously, a 3D display based on Super Multi-view technology for the computer screen is proposed in this paper, which is free from the accommodation-convergence conflict. Employing custom liquid-crystal-valve array for each eye, a proof-of-concept prototype is set up and a 3D display free from accommodation-convergence conflict gets demonstrated.

  12. Calculus refresher

    CERN Document Server

    Klaf, A A

    1956-01-01

    This book is unique in English as a refresher for engineers, technicians, and students who either wish to brush up their calculus or find parts of calculus unclear. It is not an ordinary textbook. It is, instead, an examination of the most important aspects of integral and differential calculus in terms of the 756 questions most likely to occur to the technical reader. It provides a very easily followed presentation and may also be used as either an introductory or supplementary textbook. The first part of this book covers simple differential calculus, with constants, variables, functions, inc

  13. Computing and Displaying Isosurfaces in R

    Directory of Open Access Journals (Sweden)

    Dai Feng

    2008-09-01

    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.

  14. Remote display performance for wireless healthcare computing.

    Science.gov (United States)

    Lai, Albert Max; Nieh, Jason; Laine, Andrew; Starren, Justin

    2004-01-01

    Organizations are beginning to recognize that health care providers are highly mobile and optimal care requires providing access to a large and dynamic body of information wherever the provider and patient are. Remote display protocols (RDP) are one way that organizations are using to deliver healthcare applications to mobile users. While many organizations have begun to use RDPs to deliver real-time access to health care information to clinicians, little formal work has been done to evaluate the performance or the effectiveness of thin-client computing with health care applications. This study examines the performance of wireless thin-client tablets with two web-based clinical applications, a text-centric, graphics-poor EMR and a graphic-rich image analysis program. The study compares the performance of two popular RDP implementations, Citrix and Microsoft Remote Desktop, with the performance of a traditional web browser in a wireless environment. For both applications, the RDPs demonstrated both higher speed and reduced bandwidth requirements than the web browser.

  15. Industrial Personal Computer based Display for Nuclear Safety System

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ji Hyeon; Kim, Aram; Jo, Jung Hee; Kim, Ki Beom; Cheon, Sung Hyun; Cho, Joo Hyun; Sohn, Se Do; Baek, Seung Min [KEPCO, Youngin (Korea, Republic of)

    2014-08-15

    The safety display of nuclear system has been classified as important to safety (SIL:Safety Integrity Level 3). These days the regulatory agencies are imposing more strict safety requirements for digital safety display system. To satisfy these requirements, it is necessary to develop a safety-critical (SIL 4) grade safety display system. This paper proposes industrial personal computer based safety display system with safety grade operating system and safety grade display methods. The description consists of three parts, the background, the safety requirements and the proposed safety display system design. The hardware platform is designed using commercially available off-the-shelf processor board with back plane bus. The operating system is customized for nuclear safety display application. The display unit is designed adopting two improvement features, i.e., one is to provide two separate processors for main computer and display device using serial communication, and the other is to use Digital Visual Interface between main computer and display device. In this case the main computer uses minimized graphic functions for safety display. The display design is at the conceptual phase, and there are several open areas to be concreted for a solid system. The main purpose of this paper is to describe and suggest a methodology to develop a safety-critical display system and the descriptions are focused on the safety requirement point of view.

  16. AN ORBIT COMPUTER FOR A SATELLITE POSITION DISPLAY

    Science.gov (United States)

    computed for each in turn at any arbitrary time. Computer output appears in digital form and, depending upon display design , may be either placed in a...increments in time through an anomalistic period bracketing the selected epoch. According to display design , the resulting subsatellite track will be

  17. Computer based human-centered display system

    Science.gov (United States)

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

    2002-01-01

    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.

  18. Science Academies' Refresher Course in Mathematics

    Indian Academy of Sciences (India)

    IAS Admin

    2015-06-14

    Jun 14, 2015 ... A two-week Refresher Course in Mathematics will be organized during 1–14 June 2015 at School of Mathematics,. SMVD University, Katra, Jammu & Kashmir in association with School of Innovation and Community Develop- ment, SMVDU. The aim of the Course is to display the beauty of “complex ...

  19. Recent Refresher Courses

    Indian Academy of Sciences (India)

    ... Public Lectures · Lecture Workshops · Refresher Courses · Symposia. Home; Fellowship. Fellow Profile. Elected: 1934 Section: Animal Sciences. Mathai, George FNA, FNASc 1936-40. Date of birth: 13 November 1887. Date of death: 25 June 1947. Specialization: Madreporarian Corals. YouTube; Twitter; Facebook; Blog ...

  20. Recent Refresher Courses

    Indian Academy of Sciences (India)

    ... Mid Year Meetings · Discussion Meetings · Public Lectures · Lecture Workshops · Refresher Courses · Symposia. Home; Fellowship. Fellow Profile. Elected: 1934 Section: Engineering & Technology. Vakil, Kapilram. Date of birth: 28 May 1884. Date of death: 28 January 1946. Specialization: Chemical Engineering.

  1. Refresher Course in Mathematics

    Indian Academy of Sciences (India)

    Applications are invited. from University/College teachers and Researchers interested in participating in the Academy Refresher Course on Mathematical Analysis and Applications to be held at Departme~t of Mathematics, Berhampur University, Berhampur from December. 1-13, 2003. Prof. V Kannan of University of ...

  2. Refresher Course in Immunology

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 7; Issue 7. Refresher Course in Immunology. Information and Announcements Volume 7 Issue 7 July 2002 pp 92-92. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/007/07/0092-0092. Resonance – Journal ...

  3. Science Academies' Refresher Course on Paradigms and ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 16; Issue 11. Science Academies' Refresher Course on Paradigms and Applications of Pattern Recognition in Image Processing and Computer Vision. Information and Announcements Volume 16 Issue 11 November 2011 pp 1100-1100 ...

  4. Science Academies' Refresher Course on Paradigms and ...

    Indian Academy of Sciences (India)

    2011-11-30

    Nov 30, 2011 ... ANN. Science Academies' Refresher Course on. Paradigms and Applications of Pattern Recognition in. Image Processing and Computer Vision hosted by School of Information Technology and Science. Dr GR Damodaran College of Science, Coimbatore 641 014. Recognition of patterns is a cognitive task ...

  5. Visualization and computer graphics on isotropically emissive volumetric displays.

    Science.gov (United States)

    Mora, Benjamin; Maciejewski, Ross; Chen, Min; Ebert, David S

    2009-01-01

    The availability of commodity volumetric displays provides ordinary users with a new means of visualizing 3D data. Many of these displays are in the class of isotropically emissive light devices, which are designed to directly illuminate voxels in a 3D frame buffer, producing X-ray-like visualizations. While this technology can offer intuitive insight into a 3D object, the visualizations are perceptually different from what a computer graphics or visualization system would render on a 2D screen. This paper formalizes rendering on isotropically emissive displays and introduces a novel technique that emulates traditional rendering effects on isotropically emissive volumetric displays, delivering results that are much closer to what is traditionally rendered on regular 2D screens. Such a technique can significantly broaden the capability and usage of isotropically emissive volumetric displays. Our method takes a 3D dataset or object as the input, creates an intermediate light field, and outputs a special 3D volume dataset called a lumi-volume. This lumi-volume encodes approximated rendering effects in a form suitable for display with accumulative integrals along unobtrusive rays. When a lumi-volume is fed directly into an isotropically emissive volumetric display, it creates a 3D visualization with surface shading effects that are familiar to the users. The key to this technique is an algorithm for creating a 3D lumi-volume from a 4D light field. In this paper, we discuss a number of technical issues, including transparency effects due to the dimension reduction and sampling rates for light fields and lumi-volumes. We show the effectiveness and usability of this technique with a selection of experimental results captured from an isotropically emissive volumetric display, and we demonstrate its potential capability and scalability with computer-simulated high-resolution results.

  6. Displays

    OpenAIRE

    Schauer, A.

    1983-01-01

    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.

  7. Rapid Refresh (RAP) [13 km

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Rapid Refresh (RAP) numerical weather model took the place of the Rapid Update Cycle (RUC) on May 1, 2012. Run by the National Centers for Environmental...

  8. Rapid Refresh (RAP) [20 km

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Rapid Refresh (RAP) numerical weather model took the place of the Rapid Update Cycle (RUC) on May 1, 2012. Run by the National Centers for Environmental...

  9. Three Dimensional Display Of Tumors Via Computed Tomography

    Science.gov (United States)

    Smathers, Ralph L.

    1985-09-01

    Computed tomography is widely utilized for the detection and staging of neoplasm. Typical chest, abdomen or pelvis CT scans may produce 10 to 20 transverse slices for each region. The mental reconstruction of the three dimensional anatomy from these transverse sections can be done by a physician who has had training in the analysis and interpretation of cross sectional anatomy and pathology. This mental reconstruction, however, may take years to develop into an efficient tool. With the 3-D reconstructions used in this study, diagnostic information concerning the location, shape and spread of tumor masses can be presented in a simple, intuitive 3-dimensional display. This technique has been found to be useful for improving communication between diagnostic radiologists and consulting physicians.

  10. Provenance-based refresh in data-oriented workflows

    KAUST Repository

    Ikeda, Robert

    2011-01-01

    We consider a general workflow setting in which input data sets are processed by a graph of transformations to produce output results. Our goal is to perform efficient selective refresh of elements in the output data, i.e., compute the latest values of specific output elements when the input data may have changed. We explore how data provenance can be used to enable efficient refresh. Our approach is based on capturing one-level data provenance at each transformation when the workflow is run initially. Then at refresh time provenance is used to determine (transitively) which input elements are responsible for given output elements, and the workflow is rerun only on that portion of the data needed for refresh. Our contributions are to formalize the problem setting and the problem itself, to specify properties of transformations and provenance that are required for efficient refresh, and to provide algorithms that apply to a wide class of transformations and workflows. We have built a prototype system supporting the features and algorithms presented in the paper. We report preliminary experimental results on the overhead of provenance capture, and on the crossover point between selective refresh and full workflow recomputation. © 2011 ACM.

  11. Efficient freeform lens optimization for computational caustic displays.

    Science.gov (United States)

    Damberg, Gerwin; Heidrich, Wolfgang

    2015-04-20

    Phase-only light modulation shows great promise for many imaging applications, including future projection displays. While images can be formed efficiently by avoiding per-pixel attenuation of light most projection efforts utilizing phase-only modulators are based on holographic principles which rely on interference of coherent laser light and a Fourier lens. Limitations of this type of an approach include scaling to higher power as well as visible artifacts such as speckle and image noise. We propose an alternative approach: operating the spatial phase modulator with broadband illumination by treating it as a programmable freeform lens. We describe a simple optimization approach for generating phase modulation patterns or freeform lenses that, when illuminated by a collimated, broadband light source, will project a pre-defined caustic image on a designated image plane. The optimization procedure is based on a simple geometric optics image formation model and can be implemented computationally efficient. We perform simulations and show early experimental results that suggest that the implementation on a phase-only modulator can create structured light fields suitable, for example, for efficient illumination of a spatial light modulator (SLM) within a traditional projector. In an alternative application, the algorithm provides a fast way to compute geometries for static, freeform lens manufacturing.

  12. Refresher course on family planning.

    Science.gov (United States)

    1985-03-01

    Dr. Jean Infield, a family planning expert from England, was invited to conduct a series of refresher lectures to the medical personnel of the Association. The 4-session refresher course was held in the mornings of February 26 to March 1 for 47 doctors, advisers and nurses. The topics were on the choice of contraceptive, postcoital contraception, overview of hormonal contraception, myths and fallacies of oral contraceptives, intrauterine contraception, contraception for the older women and barrier methods. Participants agreed that the lectures were informative and useful to their work in family planning. full text

  13. Role of computer graphics in space telerobotics - Preview and predictive displays

    Science.gov (United States)

    Bejczy, Antal K.; Venema, Steven; Kim, Won S.

    1991-01-01

    The application of computer graphics in space telerobotics research and development work is briefly reviewed and illustrated by specific examples implemented in real time operation. The applications are discussed under the following four major categories: preview displays, predictive displays, sensor data displays, and control system status displays.

  14. A refreshing odyssey / Matt Garrick

    Index Scriptorium Estoniae

    Garrick, Matt

    2011-01-01

    Leedu Vytautas Magnuse Ülikool tahab projekti Refresh abiga välisleedulasi koju tuua. 2 nädalat kestva projekti käigus saavad välisleedulased koos üliõpilastega õppida ja ekskursioonidel käia

  15. Refresher Course on Earth Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 8; Issue 7. Refresher Course on Earth Sciences. Information and Announcements Volume 8 Issue 7 July 2003 pp 105-106. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/008/07/0105-0106. Resonance ...

  16. Improving the computer-human interface: The qualitative monitor display

    Science.gov (United States)

    Baugh, H. W.; Zygielbaum, A. I.

    1982-01-01

    A technique for displaying the information needed by DSN operators for monitoring station performance is described. Known as a 'qualitative monitor,' it presents continuous variables in quasi-analog form on a digital cathode ray tube (CRT) display. Color changes, field reverses and blinking symbols assist the operator in identifying variables that are within acceptable limits and in performing corrective action when needed.

  17. Emittance display on the new Linac controls computer

    CERN Document Server

    CERN PhotoLab

    1975-01-01

    Top left : horizontal emittance plot. Top right : above-angular beam profile; below-horizontal beam profile. Bottom : "mountain range" display combining beam intensity distribution as the third dimension with the horizontal.

  18. Human factors of intelligent computer aided display design

    Science.gov (United States)

    Hunt, R. M.

    1985-01-01

    Design concepts for a decision support system being studied at NASA Langley as an aid to visual display unit (VDU) designers are described. Ideally, human factors should be taken into account by VDU designers. In reality, although the human factors database on VDUs is small, such systems must be constantly developed. Human factors are therefore a secondary consideration. An expert system will thus serve mainly in an advisory capacity. Functions can include facilitating the design process by shortening the time to generate and alter drawings, enhancing the capability of breaking design requirements down into simpler functions, and providing visual displays equivalent to the final product. The VDU system could also discriminate, and display the difference, between designer decisions and machine inferences. The system could also aid in analyzing the effects of designer choices on future options and in ennunciating when there are data available on a design selections.

  19. Wide-angle display developments by computer graphics

    Science.gov (United States)

    Fetter, William A.

    1989-01-01

    Computer graphics can now expand its new subset, wide-angle projection, to be as significant a generic capability as computer graphics itself. Some prior work in computer graphics is presented which leads to an attractive further subset of wide-angle projection, called hemispheric projection, to be a major communication media. Hemispheric film systems have long been present and such computer graphics systems are in use in simulators. This is the leading edge of capabilities which should ultimately be as ubiquitous as CRTs (cathode-ray tubes). These assertions are not from degrees in science or only from a degree in graphic design, but in a history of computer graphics innovations, laying groundwork by demonstration. The author believes that it is timely to look at several development strategies, since hemispheric projection is now at a point comparable to the early stages of computer graphics, requiring similar patterns of development again.

  20. Refresher

    Directory of Open Access Journals (Sweden)

    Editorial Board

    2013-05-01

    Full Text Available It has been 10 years since the Bosnian Journal of Basic Medical Sciences had emerged in PubMed as accepted by the Medline. The journal has been the voice of the Association of Basic Medical Sciences (ABMS in Bosnia and Herzegovina (B&H. We can still remember the foundation assembly of ABMS B&H with the auditorium at the Institute of Physiology at the Medical Faculty, Sarajevo, full of the most respected representatives of scientific community accepting with delight the idea to restore considerably reduced number of scientist in 1992 in the field of basic medical sciences. All members of the Academy of Sciences and Arts of Bosnia and Herzegovina who were in the country at that time, came to this gathering to provide their support in founding ABMS.The idea to establish the journal was accepted and conclusion was made to invite experts in some fields for collaboration by providing their scripts, to accept the role of reviewers, and to write editorials in relevant fields (genetics, immunology, molecular biology.At that time, nobody was aware that that Assembly was the beginning of affirmation and promotion of the journal that has, after years of regular publishing, become an international brand which web page has visited thousands of scientists from 147 countries.For all of us who have all this time been an anonymous technical support and initiators of all activities related to collecting manuscripts, ensuring independent reviews, writing editorials, and obtaining financing for 4 annual editions of the journal, all these would not have been possible without support from our academic community. We have to remember especially our deceased members of Academy Seid Hukovic, Aleksandar Nikulin, and Jela Grujic-Vasic, and current active support from Academics Muhidin Hamamdzic and Ljubomir Berberovic, and our departed Professors - Irfan Zulic, Vladimir Milicevic, Husein Susic, Branko Nikolin and Dubravka Potkonjak.Nevertheless, it should be stressed that all this journey has most frequently been excruciating for all those involved. This has been period during which for mere journal “survival”, we encountered incredible situations that we had to overcome by providing determined powerful arguments and persuasions, and with the help of many contacts and friends of the journal. At the moment when we remember all details, some of which mentioned here, we can proudly stress that younger, far and wide educated, generations are emerging. We sincerely wish that by using their knowledge and determination, they ensure publishing of their research, achieve knowledge transfer, become accessible, and affirm themselves in the world’s meticulous intellectual market.Hence, we call upon all of you to publish your best research in the journal which has achieved considerable reputation with its web page visited by respectable number of scientist from many countries. Though a small country, we have quite distinguished Diaspora that want to collaborate with their native country and that has established their place in a brutal competition within the job market.Each year, famous scientists, members of Bosnia Herzegovina American Academy of Arts and Sciences (BHAAAS from USA, come to one of the university centres in B&H. Through a direct exchange of knowledge, they help most recent scientific discoveries and breakthroughs in the world to come closer to their colleagues in the homeland. Many times our journal has made possible for these authors to publish all of their manuscripts exclusively.Editorial BoardBosnian Journal of Basic Medical Sciences 

  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)

    2012-05-15

    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. Speech Dialogue with Facial Displays Multimodal Human-Computer Conversation

    CERN Document Server

    Nagao, K; Nagao, Katashi; Takeuchi, Akikazu

    1994-01-01

    Human face-to-face conversation is an ideal model for human-computer dialogue. One of the major features of face-to-face communication is its multiplicity of communication channels that act on multiple modalities. To realize a natural multimodal dialogue, it is necessary to study how humans perceive information and determine the information to which humans are sensitive. A face is an independent communication channel that conveys emotional and conversational signals, encoded as facial expressions. We have developed an experimental system that integrates speech dialogue and facial animation, to investigate the effect of introducing communicative facial expressions as a new modality in human-computer conversation. Our experiments have shown that facial expressions are helpful, especially upon first contact with the system. We have also discovered that featuring facial expressions at an early stage improves subsequent interaction.

  3. Information and Announcements Refresher Course in Mathematics ...

    Indian Academy of Sciences (India)

    IAS Admin

    A two-week Refresher Course in Mathematics will be organized during 6–18 June, 2016 at. Department of Mathematics, Faculty of Science, The M.S. University of Baroda, Vadodara. Refresher Course is aimed at enriching the UG and PG teachers mathematically by demonstrating. Analysis in a more interactive manner so ...

  4. Information and Announcements Refresher Course in Experimental ...

    Indian Academy of Sciences (India)

    Administrator

    2007-06-10

    A Refresher Course for post-graduate college and university teachers will be held at the Crystal. Growth Centre, Anna University, Chennai from May 28 to June 10, 2007. The aim of this Refresher Course is to motivate physics teachers to improve their experimental skills and develop an insight for designing and setting up of ...

  5. A computer graphics display technique for the examination of aircraft design data

    Science.gov (United States)

    Talcott, N. A., Jr.

    1981-01-01

    An interactive computer graphics technique has been developed for quickly sorting and interpreting large amounts of aerodynamic data. It utilizes a graphic representation rather than numbers. The geometry package represents the vehicle as a set of panels. These panels are ordered in groups of ascending values (e.g., equilibrium temperatures). The groups are then displayed successively on a CRT building up to the complete vehicle. A zoom feature allows for displaying only the panels with values between certain limits. The addition of color allows a one-time display thus eliminating the need for a display build up.

  6. Estimation of computer-based display complexity in digitalized MCR of NPPs

    Energy Technology Data Exchange (ETDEWEB)

    Jang, Inseok; Kim, Chang Hwoi; Jung, Wondea [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Kim, Hyuong Ju [KEPCO NF, Daejeon (Korea, Republic of)

    2016-10-15

    By adopting new human system interface (HSI) that are based on computer-based technologies, the operation environment of main control rooms (MCRs) in nuclear power plants (NPPs) has considerably changed. It also causes the unexpected human factor issues such as problem due to high level of information density in limited display area, operators’ situation awareness problem due to complexity of HSI and others. In this light, it is necessary to develop a quantitative method to evaluate display complexity and resolve corresponding human factor issues. Accordingly, the objectives of this study are to develop a quantitative measure to estimate the complexity of computer-based display and to validate the proposed measure by comparing the estimated complexity with the subjects’ performance time in the corresponding displays. In this study, a quantitative measure to estimate the complexity of computer-based display was proposed. In addition, the proposed measure was validated by comparing the estimated complexity with the subjects’ performance time in the corresponding displays. With adaptation of the results of this study, it is expected that the proposed method will be helpful for HSI design (in particular, screen/display design) and quantification of performance shaping factor related to HSI/display complexity.

  7. Visual ergonomic aspects of glare on computer displays: glossy screens and angular dependence

    Science.gov (United States)

    Brunnström, Kjell; Andrén, Börje; Konstantinides, Zacharias; Nordström, Lukas

    2007-02-01

    Recently flat panel computer displays and notebook computer are designed with a so called glare panel i.e. highly glossy screens, have emerged on the market. The shiny look of the display appeals to the costumers, also there are arguments that the contrast, colour saturation etc improves by using a glare panel. LCD displays suffer often from angular dependent picture quality. This has been even more pronounced by the introduction of Prism Light Guide plates into displays for notebook computers. The TCO label is the leading labelling system for computer displays. Currently about 50% of all computer displays on the market are certified according to the TCO requirements. The requirements are periodically updated to keep up with the technical development and the latest research in e.g. visual ergonomics. The gloss level of the screen and the angular dependence has recently been investigated by conducting user studies. A study of the effect of highly glossy screens compared to matt screens has been performed. The results show a slight advantage for the glossy screen when no disturbing reflexes are present, however the difference was not statistically significant. When disturbing reflexes are present the advantage is changed into a larger disadvantage and this difference is statistically significant. Another study of angular dependence has also been performed. The results indicates a linear relationship between the picture quality and the centre luminance of the screen.

  8. The Instructional Effectiveness of Three Levels of Graphics Displays for Computer-Assisted Instruction.

    Science.gov (United States)

    Moore, Martha V.; And Others

    This study compares the effectiveness of three types of computer graphics display for computer-assisted instruction in (1) low level (boxed alphanumerics and schematics), (2) medium level (line drawings), and (3) high level (line drawings plus animations). Three groups of 30 enlisted personnel at the Engineering School and the Defense Mapping…

  9. A computer-oriented system for assembling and displaying land management information

    Science.gov (United States)

    Elliot L. Amidon

    1964-01-01

    Maps contain information basic to land management planning. By transforming conventional map symbols into numbers which are punched into cards, the land manager can have a computer assemble and display information required for a specific job. He can let a computer select information from several maps, combine it with such nonmap data as treatment cost or benefit per...

  10. CLINICAL SURFACES -- Activity-Based Computing for Distributed Multi-Display Environments in Hospitals

    DEFF Research Database (Denmark)

    Bardram, Jakob Eyvind; Bunde-Pedersen, Jonathan; Doryab, Afsaneh

    2009-01-01

    and browsing of patient data on public displays. We present the design and implementation of CLINICAL SURFACES, and report from an evaluation of the system at a large hospital. The evaluation shows that using distributed public displays to support activity-based computing inside a hospital is very useful...... and activities that the MDE is being used for. This paper presents a novel approach to support activity-based computing in distributed MDEs, where displays are physically distributed across a large building. CLINICAL SURFACES was designed for clinical work in hospitals, and enables context-sensitive retrieval...... for clinical work, and that the apparent contradiction between maintaining privacy of medical data in a public display environment can be mitigated by the use of CLINICAL SURFACES....

  11. The psychology of computer displays in the modern mission control center

    Science.gov (United States)

    Granaas, Michael M.; Rhea, Donald C.

    1988-01-01

    Work at NASA's Western Aeronautical Test Range (WATR) has demonstrated the need for increased consideration of psychological factors in the design of computer displays for the WATR mission control center. These factors include color perception, memory load, and cognitive processing abilities. A review of relevant work in the human factors psychology area is provided to demonstrate the need for this awareness. The information provided should be relevant in control room settings where computerized displays are being used.

  12. Science Academies' Refresher Course on Partial Differential ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 4. Science Academies' Refresher Course on Partial Differential Equations and their Applications (PDEA-2017). Information and Announcements Volume 22 Issue 4 April 2017 pp 429-429 ...

  13. Science Academies' Refresher Course on Bioresources ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 8. Science Academies' Refresher Course on Bioresources: Prospecting, Utilization, and Conservation. Information and Announcements Volume 22 Issue 8 August 2017 pp 814-814 ...

  14. Science Academies' Refresher Course on Bioprospection of ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 11. Science Academies' Refresher Course on Bioprospection of Bioresources: Land to Lab Approach. Information and Announcements Volume 22 Issue 11 November 2017 pp 1101-1101 ...

  15. Science Academies Summer Refresher Fellowship Programme for ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 17; Issue 10. Science Academies Summer Refresher Fellowship Programme for Students and Teachers - 2012. Information and Announcements Volume 17 Issue 10 October 2012 pp 1015-1018 ...

  16. Science Academies Refresher Course on Crustal Strength ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 3. Science Academies Refresher Course on Crustal Strength Rheology and Seismicity (CSRS-2017). Information and Announcements Volume 22 Issue 3 March 2017 pp 328-328 ...

  17. Science Academies' Refresher Course on Quantum Mechanics

    Indian Academy of Sciences (India)

    IAS Admin

    . Sponsored by Indian Academy of Sciences, Bangalore,. Indian National Science Academy, NewDelhi. The National Academy of Sciences, India, Allahabad. In collaboration with Bishop Moore College, Mavelikara, Kerala. A Refresher Course ...

  18. Science Academies' Refresher Course in Chemistry

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course in Chemistry. Information and Announcements Volume 22 Issue 10 October 2017 pp 972-972. Fulltext. Click here to view fulltext PDF. Permanent link:

  19. Science Academies' Refresher Course on Experimental Approaches ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course on Experimental Approaches to Molecular Microbiology and Cell Biology. Information and Announcements Volume 22 Issue 10 October 2017 pp 971-971 ...

  20. Science Academies' Refresher Course on Theoretical Structural ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 8. Science Academies' Refresher Course on Theoretical Structural Geology, Crystallography, Mineralogy, Thermodynamics, Experimental Petrology and Theoretical Geophysics. Information and Announcements Volume 22 Issue 8 August 2017 ...

  1. Analysis of Use of a Micro-Computer Driven Classroom Display. Working Paper #82-30.

    Science.gov (United States)

    Howson, H. R.; Powell, A. J.

    The instructional effectiveness of using an IBM personal computer with an Electrohome Character projector and a flat screen to display instructional material was analyzed with 89 students enrolled in a course on management information systems at McGill University. The lesson used was an introduction to VisiCalc, an applications software package,…

  2. Page 1 Cathode-Ray Display of Digital Computer Outputs 127 at a ...

    Indian Academy of Sciences (India)

    Cathode-Ray Display of Digital Computer Outputs 127 at a negative bias of Vb/2 which keeps it cut off, ... characters, the necessary digital information being wired in. Having numetal core, each transformer has a ... in the counter and the response time of the. Digital to Analog converter, Carry delay should thus be minimised,

  3. Interactive computer graphics displays for hierarchical data structures. [Description of THESGRAF, in FORTRAN IV for CDC and IBM computers

    Energy Technology Data Exchange (ETDEWEB)

    Cahn, D.F.; Murano, C.V.

    1980-05-01

    An interactive computer graphical display program was developed as an aid to user visualization and manipulation of hierarchically structured data systems such as thesauri. In the present configuration, a thesaurus term and its primary and secondary conceptual neighbors are presented to the user in tree graph form on a CRT; the user then designates, via light pen or keyboard, any of the neighbors as the next term of interest and receives a new display centered on this term. By successive specification of broader, narrower, and related terms, the user can course rapidly through the thesaurus space and refine his search file. At any stage, he deals with a term-centered, conceptually meaningful picture of a localized portion of the thesaurus, and is freed from the artificial difficulties of handling the traditional alphabetized thesaurus. Intentional limitation of the associative range of each display frame, and the use of color, case, and interconnecting vectors to encode relationships among terms, enhance interpretability of the display. Facile movement through the term space, provided by interactive computation, allows the display to remain simple, and is an essential element of the system. 3 figures.

  4. Integrated multimodal human-computer interface and augmented reality for interactive display applications

    Science.gov (United States)

    Vassiliou, Marius S.; Sundareswaran, Venkataraman; Chen, S.; Behringer, Reinhold; Tam, Clement K.; Chan, M.; Bangayan, Phil T.; McGee, Joshua H.

    2000-08-01

    We describe new systems for improved integrated multimodal human-computer interaction and augmented reality for a diverse array of applications, including future advanced cockpits, tactical operations centers, and others. We have developed an integrated display system featuring: speech recognition of multiple concurrent users equipped with both standard air- coupled microphones and novel throat-coupled sensors (developed at Army Research Labs for increased noise immunity); lip reading for improving speech recognition accuracy in noisy environments, three-dimensional spatialized audio for improved display of warnings, alerts, and other information; wireless, coordinated handheld-PC control of a large display; real-time display of data and inferences from wireless integrated networked sensors with on-board signal processing and discrimination; gesture control with disambiguated point-and-speak capability; head- and eye- tracking coupled with speech recognition for 'look-and-speak' interaction; and integrated tetherless augmented reality on a wearable computer. The various interaction modalities (speech recognition, 3D audio, eyetracking, etc.) are implemented a 'modality servers' in an Internet-based client-server architecture. Each modality server encapsulates and exposes commercial and research software packages, presenting a socket network interface that is abstracted to a high-level interface, minimizing both vendor dependencies and required changes on the client side as the server's technology improves.

  5. Radiological interpretation of images displayed on tablet computers: a systematic review.

    Science.gov (United States)

    Caffery, L J; Armfield, N R; Smith, A C

    2015-06-01

    To review the published evidence and to determine if radiological diagnostic accuracy is compromised when images are displayed on a tablet computer and thereby inform practice on using tablet computers for radiological interpretation by on-call radiologists. We searched the PubMed and EMBASE databases for studies on the diagnostic accuracy or diagnostic reliability of images interpreted on tablet computers. Studies were screened for inclusion based on pre-determined inclusion and exclusion criteria. Studies were assessed for quality and risk of bias using Quality Appraisal of Diagnostic Reliability Studies or the revised Quality Assessment of Diagnostic Accuracy Studies tool. Treatment of studies was reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). 11 studies met the inclusion criteria. 10 of these studies tested the Apple iPad(®) (Apple, Cupertino, CA). The included studies reported high sensitivity (84-98%), specificity (74-100%) and accuracy rates (98-100%) for radiological diagnosis. There was no statistically significant difference in accuracy between a tablet computer and a digital imaging and communication in medicine-calibrated control display. There was a near complete consensus from authors on the non-inferiority of diagnostic accuracy of images displayed on a tablet computer. All of the included studies were judged to be at risk of bias. Our findings suggest that the diagnostic accuracy of radiological interpretation is not compromised by using a tablet computer. This result is only relevant to the Apple iPad and to the modalities of CT, MRI and plain radiography. The iPad may be appropriate for an on-call radiologist to use for radiological interpretation.

  6. Development of display design and command usage guidelines for Spacelab experiment computer applications

    Science.gov (United States)

    Dodson, D. W.; Shields, N. L., Jr.

    1979-01-01

    Individual Spacelab experiments are responsible for developing their CRT display formats and interactive command scenarios for payload crew monitoring and control of experiment operations via the Spacelab Data Display System (DDS). In order to enhance crew training and flight operations, it was important to establish some standardization of the crew/experiment interface among different experiments by providing standard methods and techniques for data presentation and experiment commanding via the DDS. In order to establish optimum usage guidelines for the Spacelab DDS, the capabilities and limitations of the hardware and Experiment Computer Operating System design had to be considered. Since the operating system software and hardware design had already been established, the Display and Command Usage Guidelines were constrained to the capabilities of the existing system design. Empirical evaluations were conducted on a DDS simulator to determine optimum operator/system interface utilization of the system capabilities. Display parameters such as information location, display density, data organization, status presentation and dynamic update effects were evaluated in terms of response times and error rates.

  7. Large holographic 3D display for real-time computer-generated holography

    Science.gov (United States)

    Häussler, R.; Leister, N.; Stolle, H.

    2017-06-01

    SeeReal's concept of real-time holography is based on Sub-Hologram encoding and tracked Viewing Windows. This solution leads to significant reduction of pixel count and computation effort compared to conventional holography concepts. Since the first presentation of the concept, improved full-color holographic displays were built with dedicated components. The hologram is encoded on a spatial light modulator that is a sandwich of a phase-modulating and an amplitude-modulating liquid-crystal display and that modulates amplitude and phase of light. Further components are based on holographic optical elements for light collimation and focusing which are exposed in photopolymer films. Camera photographs show that only the depth region on which the focus of the camera lens is set is in focus while the other depth regions are out of focus. These photographs demonstrate that the 3D scene is reconstructed in depth and that accommodation of the eye lenses is supported. Hence, the display is a solution to overcome the accommodationconvergence conflict that is inherent for stereoscopic 3D displays. The main components, progress and results of the holographic display with 300 mm x 200 mm active area are described. Furthermore, photographs of holographic reconstructed 3D scenes are shown.

  8. High-immersion three-dimensional display of the numerical computer model

    Science.gov (United States)

    Xing, Shujun; Yu, Xunbo; Zhao, Tianqi; Cai, Yuanfa; Chen, Duo; Chen, Zhidong; Sang, Xinzhu

    2013-08-01

    High-immersion three-dimensional (3D) displays making them valuable tools for many applications, such as designing and constructing desired building houses, industrial architecture design, aeronautics, scientific research, entertainment, media advertisement, military areas and so on. However, most technologies provide 3D display in the front of screens which are in parallel with the walls, and the sense of immersion is decreased. To get the right multi-view stereo ground image, cameras' photosensitive surface should be parallax to the public focus plane and the cameras' optical axes should be offset to the center of public focus plane both atvertical direction and horizontal direction. It is very common to use virtual cameras, which is an ideal pinhole camera to display 3D model in computer system. We can use virtual cameras to simulate the shooting method of multi-view ground based stereo image. Here, two virtual shooting methods for ground based high-immersion 3D display are presented. The position of virtual camera is determined by the people's eye position in the real world. When the observer stand in the circumcircle of 3D ground display, offset perspective projection virtual cameras is used. If the observer stands out the circumcircle of 3D ground display, offset perspective projection virtual cameras and the orthogonal projection virtual cameras are adopted. In this paper, we mainly discussed the parameter setting of virtual cameras. The Near Clip Plane parameter setting is the main point in the first method, while the rotation angle of virtual cameras is the main point in the second method. In order to validate the results, we use the D3D and OpenGL to render scenes of different viewpoints and generate a stereoscopic image. A realistic visualization system for 3D models is constructed and demonstrated for viewing horizontally, which provides high-immersion 3D visualization. The displayed 3D scenes are compared with the real objects in the real world.

  9. Refresher Course in Probability, Stochastic Processes and ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 10; Issue 5. Refresher Course in Probability, Stochastic Processes and Applications. Information and Announcements Volume 10 Issue 5 May 2005 pp 100-100. Fulltext. Click here to view fulltext PDF. Permanent link:

  10. Science Academies' Refresher Course in Quantum Mechanics

    Indian Academy of Sciences (India)

    IAS Admin

    A Refresher Course in 'Quantum Mechanics' for college/university teachers will be held at the Physics Department of IIT Roorkee, Uttarakhand, from 28 November to 12 December, 2013. The Course is aimed for college teachers engaged in teaching at the UG/PG level as well as those who use and need Quantum ...

  11. Science Academies' Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course in Experimental Physics. Information and Announcements Volume 22 Issue 10 October 2017 pp 976-976. Fulltext. Click here to view fulltext PDF. Permanent link:

  12. Science Academies' Refresher Course on Theoretical Chemistry

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 3. Science Academies' Refresher Course on Theoretical Chemistry. Information and Announcements Volume 22 Issue 3 March 2017 pp 329-329. Fulltext. Click here to view fulltext PDF. Permanent link:

  13. Science Academies Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 3. Science Academies Refresher Course in Experimental Physics. Information and Announcements Volume 22 Issue 3 March 2017 pp 330-330. Fulltext. Click here to view fulltext PDF. Permanent link:

  14. Science Academies' Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 2. Science Academies' Refresher Course in Experimental Physics. Information and Announcements Volume 22 Issue 2 February 2017 pp 188-188. Fulltext. Click here to view fulltext PDF. Permanent link:

  15. Science Academies' Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 1. Science Academies' Refresher Course in Experimental Physics. Information and Announcements Volume 19 Issue 1 January 2014 pp 97-97. Fulltext. Click here to view fulltext PDF. Permanent link:

  16. Information and Announcements Refresher Course in Immunology ...

    Indian Academy of Sciences (India)

    Organised by Moving Academy of Medicine and Biomedicine and. Interdisciplinary School of Health Sciences, Pune sponsored by Indian Academy of Sciences, Bangalore. A Refresher Course in Immunology will be held for college/university teachers at the Interdisciplinary School of Health Sciences, University of Pune, ...

  17. Forty Ninth Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    IAS Admin

    ... paid the actual to and fro railway fare not exceeding three-tier AC fare. Boarding and lodging in Bangalore will be taken care of by the Academy. It has been bought to our attention that teachers in. Universities/Colleges who attend Refresher Courses of two-week duration are also entitled to be considered for promotion.

  18. Information and Announcements Refresher Course on Advanced ...

    Indian Academy of Sciences (India)

    teaching experience, course taught, positions held, telephone numbers, etc.) along with a brief write-up to why they would like to participate in this course, through the Head of the. Institution/University, to. Dr. R Ramaraj, Course Director, Refresher Course on "Advanced Topics in Chemistry". Centre for Photoelectrochemistry ...

  19. Science Academies' Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course in Experimental Physics. Information and Announcements Volume 22 Issue 10 October 2017 pp 974-974. Fulltext. Click here to view fulltext PDF. Permanent link:

  20. Science Academies' Refresher Course on Environmental Biology

    Indian Academy of Sciences (India)

    IAS Admin

    This two-week refresher course on environmental biology will cover recent advances in fields such as RNAi technology, soil and rhizosphere health, biogeochemistry, environmental pollution, functional genomics, plant genomics and biochemis- try, and molecular medicine. All resource persons will be eminent scientists ...

  1. Science Academies' Refresher Course on Modern Genetics ...

    Indian Academy of Sciences (India)

    IAS Admin

    A Refresher Course on 'Modern Genetics: Concepts and Practice' for graduate and postgraduate college/university teachers will be held at Manipal Life Sciences ... with following details: name, age, date of birth, gender, email, official and residential address, telephone and mobile numbers, academic qualifications starting ...

  2. Ethnobotany of pru, a traditional Cuban refreshment

    NARCIS (Netherlands)

    Volpato, G.; Godínez, D.

    2004-01-01

    Gouania polygama (Jacq.) Urban, Smilax domingensis Willd., and Pimenta dioica Merr., are three species widely used within Cuban ethnobotanical traditions and practices. Pru is a traditional refreshment and medicinal drink produced by their decoction and fermentation with sugar. It is claimed to have

  3. Science Academies' Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    2017-12-18

    Dec 18, 2017 ... A Refresher Course in Experimental Physics will be held at the Department of Physics, Panjab. University, Chandigarh held from 18 December 2017 to 2 January 2018 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. The Course aims to familiarize the teachers with a ...

  4. Refresher Course in Plant Genetic Engineering

    Indian Academy of Sciences (India)

    The aim of this two-week Refresher Course is to impart a hands-on training in Plant. Genetic Engineering. The participants will be trained in the basic methods of cloning a foreign gene in a binary vector, introduction of the binary vector into Agrobacterium and transformation of tobacco using Agrobacterium. Confirmation of ...

  5. Science Academies' Refresher Course in Developmental Biology

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 8. Science Academies' Refresher Course in Developmental Biology. Information and Announcements Volume 20 Issue 8 August 2015 pp 756-756. Fulltext. Click here to view fulltext PDF. Permanent link:

  6. Science Academies' Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 8. Science Academies' Refresher Course in Experimental Physics. Information and Announcements Volume 20 Issue 8 August 2015 pp 755-755. Fulltext. Click here to view fulltext PDF. Permanent link:

  7. Science Academies' Refresher Course on Experimental Biology ...

    Indian Academy of Sciences (India)

    IAS Admin

    A refresher course on 'Experimental Biology: Orthodox to Modern' will be held at PG and Research Department of Botany, St.Joseph's College, Tiruchirappalli , Tamil Nadu for two weeks from 07 November to 19 November. 2016. The objective of this course is to improvise on teaching methodologies and also get familiar ...

  8. Science Academies' Seventieth Refresher Course in Experimental ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 2. Science Academies' Seventieth Refresher Course in Experimental Physics. Information and Announcements Volume 20 Issue 2 February 2015 pp 184-184. Fulltext. Click here to view fulltext PDF. Permanent link:

  9. Information and Announcements Science Academies Refresher ...

    Indian Academy of Sciences (India)

    2016-12-30

    Dec 30, 2016 ... Department of Physics, St. Philomenas College (Autonomous), Bannimantap, Mysuru 570015. in collaboration with Department of Physics, Kurukshetra University, Kurukshetra. A Refresher Course in Experimental Physics will be held in the Department of Physics, St. Philomena's. College, Mysuru for the ...

  10. Science Academies' Refresher Course in Theoretical Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 9. Science Academies' Refresher Course in Theoretical Physics. Information and Announcements Volume 19 Issue 9 September 2014 pp 875-875. Fulltext. Click here to view fulltext PDF. Permanent link:

  11. Science Academies' Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    include Refresher Courses for getting API scores. Applications are invited from teachers with experience in teaching undergraduate and postgradu- ate courses in Engineering and Physics. Motivated research scholars, students of BSc and MSc. Physics courses with keen interest in Experimental Physics may also apply.

  12. Science Academies' Refresher Course in Statistical Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 9. Science Academies' Refresher Course in Statistical Physics. Information and Announcements Volume 22 Issue 9 September 2017 pp 903-903. Fulltext. Click here to view fulltext PDF. Permanent link:

  13. Science Academies' Refresher Course on Quantum Mechanics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 7. Science Academies' Refresher Course on Quantum Mechanics. Information and Announcements Volume 21 Issue 7 July 2016 pp 669-670. Fulltext. Click here to view fulltext PDF. Permanent link:

  14. Science Academies' Refresher Course in Quantum Mechanics

    Indian Academy of Sciences (India)

    IAS Admin

    Science Academies' Refresher Course in Quantum Mechanics. 2–14 December 2013 at J S S Institutions Campus, Suttur, Mysore District. Sponsored by Indian Academy of Sciences, Bangalore, Indian National Science Academy, New Delhi and The National Academy of Sciences, India, Allahabad in collaboration with ...

  15. Science Academies' Refresher Course in Quantum Mechanics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 2. Science Academies' Refresher Course in Quantum Mechanics. Information and Announcements Volume 22 Issue 2 February 2017 pp 185-185. Fulltext. Click here to view fulltext PDF. Permanent link:

  16. Science Academies' Refresher Course in Quantum Mechanics

    Indian Academy of Sciences (India)

    IAS Admin

    2013-02-28

    Feb 28, 2013 ... A Refresher Course in Quantum Mechanics for college/university teachers will be held at St. Berchmans College,. Changanacherry, Kottayam, Kerala, from 1 to 14 May 2013. The Course is aimed for college teachers engaging. Quantum Mechanics at the UG./PG level. The Course will cover the basic and ...

  17. Science Academies' Refresher Course on Quantum Mechanics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 9. Science Academies' Refresher Course on Quantum Mechanics. Information and Announcements Volume 22 Issue 9 September 2017 pp 899-899. Fulltext. Click here to view fulltext PDF. Permanent link:

  18. Information and Announcements Science Academies' Refresher ...

    Indian Academy of Sciences (India)

    IAS Admin

    2016-01-20

    Jan 20, 2016 ... 15–30 April 2016 at Dayanand Science College, Latur. Sponsored by Indian Academy of Sciences, Bengaluru, Indian National Science Academy, New. Delhi, The National Academy of Sciences, India, Allahabad. Applications are invited from undergraduate college teachers. This Refresher Course aimed ...

  19. Science Academies' Refresher Course in Statistical Mechanics

    Indian Academy of Sciences (India)

    2018-02-27

    1 day ago ... Applications are invited from teachers with experience in teaching undergraduate and postgraduate courses in Physics. Maximum 40 applications will be considered. Teachers/Post-docs/Research. Scholars who wish to participate in the Refresher Course should apply online by clicking on the following link ...

  20. Information and Announcements Refresher Course on Recent ...

    Indian Academy of Sciences (India)

    2010-12-21

    Dec 21, 2010 ... A Refresher Course on “Recent Advances in Chemical Science & its Technological Applications” for College/. University teachers is being held at the Department of Chemistry, Sikkim Manipal Institute of Technology, Majitar,. Rangpo, Sikkim (East) from 8 to 21 December, 2010. The course will cover all ...

  1. Information and Announcements Science Academies' Refresher ...

    Indian Academy of Sciences (India)

    IAS Admin

    2015-09-20

    Sep 20, 2015 ... A Refresher Course in Recent Advances in Chemistry for College/University teachers and research scholars will be organized at B.I.T., Mesra (Deoghar Campus) in association with A. S. College, Deoghar, Jharkhand for two weeks from December 14 –26, 2015. The Course is aimed at teachers teaching at ...

  2. Science Academies Refresher Course in Statistical Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 17; Issue 2. Science Academies Refresher Course in Statistical Physics. Information and Announcements Volume 17 Issue 2 February 2012 pp 226-226. Fulltext. Click here to view fulltext PDF. Permanent link:

  3. Information and Announcements Refresher Course on Marine ...

    Indian Academy of Sciences (India)

    2007-07-31

    Jul 31, 2007 ... A Refresher Course on 'Marine Geology and Geophysics' for Post-graduate College/University teachers, will be held during October 22 – November 2, 2007 at the National Institute of. Oceanography, Dona Paula, Goa. For details, please see the June 2007 issue of Resonance. Course Directors: Dr. V ...

  4. Refresher Course on" Vistas in Zoological Teaching

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 12; Issue 12. Refresher Course on "Vistas in Zoological Teaching". Information and Announcements Volume 12 Issue 12 December 2007 pp 75-75. Fulltext. Click here to view fulltext PDF. Permanent link:

  5. Science Academies Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    2017-08-25

    Aug 25, 2017 ... A Refresher Course in Experimental Physics will be held in Christ Church College, Kanpur, from 10th to. 25th August 2017 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. Participants in this course will gain hands on experience with about twenty five experiments, ...

  6. Information and Announcements Science Academies Refresher ...

    Indian Academy of Sciences (India)

    2012-02-29

    Feb 29, 2012 ... A Refresher Course in Statistical Physics for College/University teachers will be held at Nehru Science and. Arts College, Kanhangad, Kerala, from April 29 – May 12, 2012. The course is aimed at college teachers of. Statistical Mechanics courses at the BSc/MSc level. The course will cover the basic ...

  7. Science Academies' Sixtieth Refresher Course in Experimental ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 1. Science Academies' Sixtieth Refresher Course in Experimental Physics. Information and Announcements Volume 19 Issue 1 January 2014 pp 98-98. Fulltext. Click here to view fulltext PDF. Permanent link:

  8. Science Academies' Refresher Course on Advanced Quantum ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 8. Science Academies Refresher Course on Advanced Quantum Mechanics. Information and Announcements Volume 21 Issue 8 August 2016 pp 766-766. Fulltext. Click here to view fulltext PDF. Permanent link:

  9. 29 CFR 18.612 - Writing used to refresh memory.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 1 2010-07-01 2010-07-01 true Writing used to refresh memory. 18.612 Section 18.612 Labor... OFFICE OF ADMINISTRATIVE LAW JUDGES Rules of Evidence Witnesses § 18.612 Writing used to refresh memory. If a witness uses a writing to refresh memory for the purpose of testifying, either while testifying...

  10. Image display system for synchronous interpretaion of supine and prone computed tomographic colography

    Science.gov (United States)

    Reed, Judd E.; Johnson, C. Daniel

    1998-06-01

    Computed tomographic colography (CTC or virtual colonoscopy) is a new technique for imaging the colon for the detection of colorectal neoplasms. Early clinical assessment of this procedure has shown that the performance of this test is acceptable for colorectal screening examinations. The current version of CTC utilizes an interactive combination of axial, reformatted 2D and 3D images (from an endoluminal perspective) that are generated in real time. Retained fluid in the lumen of the colon is a commonly encountered problem that can obscure lesions. Prone imaging in addition to standard supine views are often required to visualize obscured colonic segments. Although the colorectum is often seen optimally with combined supine and prone views, twice as much interpretation time is required with both acquisitions. The purpose of this study is to describe a novel system of synchronous display of supine and prone images of the colon. Simultaneous display of synchronized (anatomically registered) views of the colon eliminates the need for two separate readings of the colon and shortens interpretation time. This tool has all of the features of the original CTC interpretation system (presented in 1995) and includes recent innovations such as virtual pathology which is present in another paper within this Proceeding. The anatomic levels are indexed to match each other and advanced synchronously as the radiologist interprets the data set. Axial, reformatted 2D and 3D images are displayed and simultaneously updated for both prone and supine images on the same computer screen. The colon only needs to be reviewed once with the diagnostic benefit of both scans. In many cases, the two scans can be interpreted nearly as quickly as one. Conclusion: Synchronous display of prone and supine images of the colon is a new enhancement for CTC that combines with advantages of prone and supine views without the added interpretations time of reviewing two separate scans.

  11. The Determination of a Useful Frequency for Refreshing Memories for Procedures among a Collegiate Population.

    Science.gov (United States)

    Zambon, Franco

    This study sought to determine a useful frequency for refreshing students' memories of complex procedures that involved a formal computer language. Students were required to execute the Microsoft Disc Operating System (MS-DOS) commands for "copy,""backup," and "restore." A total of 126 college students enrolled in six…

  12. Eye movement analysis of reading from computer displays, eReaders and printed books.

    Science.gov (United States)

    Zambarbieri, Daniela; Carniglia, Elena

    2012-09-01

    To compare eye movements during silent reading of three eBooks and a printed book. The three different eReading tools were a desktop PC, iPad tablet and Kindle eReader. Video-oculographic technology was used for recording eye movements. In the case of reading from the computer display the recordings were made by a video camera placed below the computer screen, whereas for reading from the iPad tablet, eReader and printed book the recording system was worn by the subject and had two cameras: one for recording the movement of the eyes and the other for recording the scene in front of the subject. Data analysis provided quantitative information in terms of number of fixations, their duration, and the direction of the movement, the latter to distinguish between fixations and regressions. Mean fixation duration was different only in reading from the computer display, and was similar for the Tablet, eReader and printed book. The percentage of regressions with respect to the total amount of fixations was comparable for eReading tools and the printed book. The analysis of eye movements during reading an eBook from different eReading tools suggests that subjects' reading behaviour is similar to reading from a printed book. © 2012 The College of Optometrists.

  13. Method for refreshing a non-volatile memory

    Science.gov (United States)

    Riekels, James E.; Schlesinger, Samuel

    2008-11-04

    A non-volatile memory and a method of refreshing a memory are described. The method includes allowing an external system to control refreshing operations within the memory. The memory may generate a refresh request signal and transmit the refresh request signal to the external system. When the external system finds an available time to process the refresh request, the external system acknowledges the refresh request and transmits a refresh acknowledge signal to the memory. The memory may also comprise a page register for reading and rewriting a data state back to the memory. The page register may comprise latches in lieu of supplemental non-volatile storage elements, thereby conserving real estate within the memory.

  14. 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....

  15. Waste Generation Overview Refresher, Course 21464

    Energy Technology Data Exchange (ETDEWEB)

    Simpson, Lewis Edward [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-12-13

    This course, Waste Generation Overview Refresher (COURSE 21464), provides an overview of federal and state waste management regulations, as well as Los Alamos National Laboratory (LANL) policies and procedures for waste management operations. The course covers the activities involved in the cradle-to- grave waste management process and focuses on waste characterization, waste compatibility determinations and classification, and the storage requirements for temporary waste accumulation areas at LANL.

  16. Finding-specific display presets for computed radiography soft-copy reading.

    Science.gov (United States)

    Andriole, K P; Gould, R G; Webb, W R

    1999-05-01

    Much work has been done to optimize the display of cross-sectional modality imaging examinations for soft-copy reading (i.e., window/level tissue presets, and format presentations such as tile and stack modes, four-on-one, nine-on-one, etc). Less attention has been paid to the display of digital forms of the conventional projection x-ray. The purpose of this study is to assess the utility of providing presets for computed radiography (CR) soft-copy display, based not on the window/level settings, but on processing applied to the image optimized for visualization of specific findings, pathologies, etc (i.e., pneumothorax, tumor, tube location). It is felt that digital display of CR images based on finding-specific processing presets has the potential to: speed reading of digital projection x-ray examinations on soft copy; improve diagnostic efficacy; standardize display across examination type, clinical scenario, important key findings, and significant negatives; facilitate image comparison; and improve confidence in and acceptance of soft-copy reading. Clinical chest images are acquired using an Agfa-Gevaert (Mortsel, Belgium) ADC 70 CR scanner and Fuji (Stamford, CT) 9000 and AC2 CR scanners. Those demonstrating pertinent findings are transferred over the clinical picture archiving and communications system (PACS) network to a research image processing station (Agfa PS5000), where the optimal image-processing settings per finding, pathologic category, etc, are developed in conjunction with a thoracic radiologist, by manipulating the multiscale image contrast amplification (Agfa MUSICA) algorithm parameters. Soft-copy display of images processed with finding-specific settings are compared with the standard default image presentation for 50 cases of each category. Comparison is scored using a 5-point scale with the positive scale denoting the standard presentation is preferred over the finding-specific processing, the negative scale denoting the finding

  17. Computer-aided microtomography with true 3-D display in electron microscopy.

    Science.gov (United States)

    Nelson, A C

    1986-01-01

    A novel research system has been designed to permit three-dimensional (3-D) viewing of high resolution image data from transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The system consists of front-end primary data acquisition devices, such as TEM and SEM machines, which are equipped with computer-controlled specimen tilt stages. The output from these machines is in analogue form, where a video camera attached to the TEM provides the sequential analogue image output while the SEM direct video output is utilized. A 10 MHz digitizer transforms the video image to a digital array of 512 X 512 pixel units of 8 bits deep-stored in a frame buffer. Digital images from multiple projections are reconstructed into 3-D image boxes in a dedicated computer. Attached to the computer is a powerful true 3-D display device which has hardware for graphic manipulations including tilt and rotate on any axis and for probing the image with a 3-D cursor. Data editing and automatic contouring functions are used to enhance areas of interest, and specialized software is available for measurement of numbers, distances, areas, and volumes. With proper archiving of reconstructed image sequences, a dynamic 3-D presentation is possible. The microtomography system is highly versatile and can process image data on-line or from remote sites from which data records would typically be transported on computer tape, video tape, or floppy disk.

  18. Vision-based calibration of parallax barrier displays

    Science.gov (United States)

    Ranieri, Nicola; Gross, Markus

    2014-03-01

    Static and dynamic parallax barrier displays became very popular over the past years. Especially for single viewer applications like tablets, phones and other hand-held devices, parallax barriers provide a convenient solution to render stereoscopic content. In our work we present a computer vision based calibration approach to relate image layer and barrier layer of parallax barrier displays with unknown display geometry for static or dynamic viewer positions using homographies. We provide the math and methods to compose the required homographies on the fly and present a way to compute the barrier without the need of any iteration. Our GPU implementation is stable and general and can be used to reduce latency and increase refresh rate of existing and upcoming barrier methods.

  19. Novel electronic refreshers for cardiopulmonary resuscitation: a randomized controlled trial

    Directory of Open Access Journals (Sweden)

    Magura Stephen

    2012-11-01

    Full Text Available Abstract Background Currently the American Red Cross requires that individuals renew their cardiopulmonary resuscitation (CPR certification annually; this often requires a 4- to 8-hour refresher course. Those trained in CPR often show a decrease in essential knowledge and skills within just a few months after training. New electronic means of communication have expanded the possibilities for delivering CPR refreshers to members of the general public who receive CPR training. The study’s purpose was to determine the efficacy of three novel CPR refreshers - online website, e-mail and text messaging – for improving three outcomes of CPR training - skill retention, confidence for using CPR and intention to use CPR. These three refreshers may be considered “novel” in that they are not typically used to refresh CPR knowledge and skills. Methods The study conducted two randomized clinical trials of the novel CPR refreshers. A mailed brochure was a traditional, passive refresher format and served as the control condition. In Trial 1, the refreshers were delivered in a single episode at 6 months after initial CPR training. In Trial 2, the refreshers were delivered twice, at 6 and 9 months after initial CPR training, to test the effect of a repeated delivery. Outcomes for the three novel refreshers vs. the mailed brochure were determined at 12 months after initial CPR training. Results Assignment to any of three novel refreshers did not improve outcomes of CPR training one year later in comparison with receiving a mailed brochure. Comparing outcomes for subjects who actually reviewed some of the novel refreshers vs. those who did not indicated a significant positive effect for one outcome, confidence for performing CPR. The website refresher was associated with increased behavioral intent to perform CPR. Stated satisfaction with the refreshers was relatively high. The number of episodes of refreshers (one vs. two did not have a significant effect

  20. Fast polygon-based method for calculating computer-generated holograms in three-dimensional display.

    Science.gov (United States)

    Pan, Yijie; Wang, Yongtian; Liu, Juan; Li, Xin; Jia, Jia

    2013-01-01

    In the holographic three-dimensional (3D) display, the numerical synthesis of the computer-generated holograms needs tremendous calculation. To solve the problem, a fast polygon-based method based on two-dimensional Fourier analysis of 3D affine transformation is proposed. From one primitive polygon, the proposed method calculates the diffracted optical field of each arbitrary polygon in the 3D model, where the pseudo-inverse matrix, the interpolation, and the compensation of the power spectral density are employed. The proposed method could save the computation time in the hologram synthesis since it does not need the fast Fourier transform for each polygonal surface and the additional diffusion computation. The numerical simulation and the optical experimental results are presented to demonstrate the effectiveness of the method. The results reveal the proposed method could reconstruct the 3D scene with the solid effect and without the depth limitation. The factors that influence the image quality are discussed, and the thresholds are proposed to ensure the reconstruction quality.

  1. Three-dimensional scene encryption and display based on computer-generated holograms.

    Science.gov (United States)

    Kong, Dezhao; Cao, Liangcai; Jin, Guofan; Javidi, Bahram

    2016-10-10

    An optical encryption and display method for a three-dimensional (3D) scene is proposed based on computer-generated holograms (CGHs) using a single phase-only spatial light modulator. The 3D scene is encoded as one complex Fourier CGH. The Fourier CGH is then decomposed into two phase-only CGHs with random distributions by the vector stochastic decomposition algorithm. Two CGHs are interleaved as one final phase-only CGH for optical encryption and reconstruction. The proposed method can support high-level nonlinear optical 3D scene security and complex amplitude modulation of the optical field. The exclusive phase key offers strong resistances of decryption attacks. Experimental results demonstrate the validity of the novel method.

  2. Image quality enhancement and computation acceleration of 3D holographic display using a symmetrical 3D GS algorithm.

    Science.gov (United States)

    Zhou, Pengcheng; Bi, Yong; Sun, Minyuan; Wang, Hao; Li, Fang; Qi, Yan

    2014-09-20

    The 3D Gerchberg-Saxton (GS) algorithm can be used to compute a computer-generated hologram (CGH) to produce a 3D holographic display. But, using the 3D GS method, there exists a serious distortion in reconstructions of binary input images. We have eliminated the distortion and improved the image quality of the reconstructions by a maximum of 486%, using a symmetrical 3D GS algorithm that is developed based on a traditional 3D GS algorithm. In addition, the hologram computation speed has been accelerated by 9.28 times, which is significant for real-time holographic displays.

  3. Rapid P300 brain-computer interface communication with a head-mounted display

    Directory of Open Access Journals (Sweden)

    Ivo eKäthner

    2015-06-01

    Full Text Available Visual ERP (P300 based brain-computer interfaces (BCIs allow for fast and reliable spelling and are intended as a muscle-independent communication channel for people with severe paralysis. However, they require the presentation of visual stimuli in the field of view of the user. A head mounted display could allow convenient presentation of visual stimuli in situations, where mounting a conventional monitor might be difficult or not feasible (e.g. at a patient’s bedside. To explore if similar accuracies can be achieved with a virtual reality (VR headset compared to a conventional flat screen monitor, we conducted an experiment with 18 healthy participants. We also evaluated it with a person in the locked-in state (LIS to verify that usage of the headset is possible for a severely paralyzed person. Healthy participants performed online spelling with three different display methods. In one condition a 5x5 letter matrix was presented on a conventional 22 inch TFT monitor. Two configurations of the VR headset were tested. In the first (glasses A, the same 5x5 matrix filled the field of view of the user. In the second (glasses B, single letters of the matrix filled the field of view of the user. The participant in the LIS tested the VR headset on 3 different occasions (glasses A condition only. For healthy participants, average online spelling accuracies were 94% (15.5 bits/min using three flash sequences for spelling with the monitor and glasses A and 96% (16.2 bits/min with glasses B. In one session, the participant in the LIS reached an online spelling accuracy of 100% (10 bits/min using the glasses A condition. We also demonstrated that spelling with one flash sequence is possible with the VR headset for healthy users (mean: 32.1 bits/min, maximum reached by one user: 71.89 bits/min at 100% accuracy. We conclude that the VR headset allows for rapid P300 BCI communication in healthy users and may be a suitable display option for severely

  4. Refresher Course in Mathematics Science Academies Two Week ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 2. Refresher Course in Mathematics Science Academies Two Week Refresher Course on Analysis and its Applications. Information and Announcements Volume 21 Issue 2 February 2016 pp 199-200 ...

  5. An evaluation of a refresher training intervention for HIV lay ...

    African Journals Online (AJOL)

    Charles Msisuka a , Ikuma Nozaki b i-nozaki@it.ncgm.go.jpinozaki@hsph.harvard.edu, Kazuhiro Kakimoto c , Motoko Seko d & Mercy M S Ulaya e

    Abstract. To address a severe shortage of human resources for health, the Zambian Ministry of Health has begun to make use of lay counsellors for HIV counselling and testing. However, their skills and knowledge rarely have been reviewed or refreshed. We conducted a two-day refresher workshop for lay counsellors to ...

  6. An evaluation of a refresher training intervention for HIV lay ...

    African Journals Online (AJOL)

    To address a severe shortage of human resources for health, the Zambian Ministry of Health has begun to make use of lay counsellors for HIV counselling and testing. However, their skills and knowledge rarely have been reviewed or refreshed. We conducted a two-day refresher workshop for lay counsellors to review their ...

  7. Information and Announcements Science Academies 81st Refresher ...

    Indian Academy of Sciences (India)

    IAS Admin

    2016-09-25

    Sep 25, 2016 ... ANN. RESONANCE | September 2016. Information and Announcements. Science Academies 81st Refresher Course on. Experimental Physics. 3–18, November 2016. Goa University, Goa. A Refresher Course in Experimental Physics will be held at Goa University, Goa from 03 to 18 November 2016 for.

  8. Guidelines for the use of vibro-tactile displays in human computer interaction

    NARCIS (Netherlands)

    Erp, J.B.F. van

    2002-01-01

    Vibro-tactile displays convey messages by presenting vibration to the user's skin. In recent years, the interest in and application of vibro-tactile displays is growing. Vibratory displays are introduced in mobile devices, desktop applications and even in aircraft [1]. Despite the growing interest,

  9. Design of crossed cathode in TCO material electrochemical removal from computer displays' device

    Energy Technology Data Exchange (ETDEWEB)

    Pa, P.S. [National Taipei Univ. of Education, Taipei City, Taiwan (China). Dept. of Digital Content Design, Graduate School of Toy and Game Design

    2010-07-01

    This presentation reported on a study involving new transparent conductive oxide (TCO) materials and electronic and optoelectronic devices. In particular, it described a crossed cathode design system that can remove TCO electrochemically from a thin film transistor liquid crystal display (TFT-LCD) surface of a computer screen. The design etching processes requires only a short time to remove the TCO thin-films easily and cleanly. The defective TCO materials were removed using this precise process, and the defective colour filters were returned to the production line. A fifth generation TFT-LCD was used for the experiment. A thin thickness of the crossed cathode, or a small edge radius of the crossed cathode, corresponded to a higher etching rate for the TCO thin-films. A small distance between the crossed cathode and the cylinder anode, or a small gap width between the crossed cathode and the workpiece, also corresponded to a higher etching rate. A higher feed rate of the workpiece together with sufficient electric power resulted in electrochemical etching. It was concluded that the effects of dreg discharge could be improved by providing pulsed direct current or using a high rotational speed of the crossed cathode.

  10. Affective three-dimensional brain-computer interface created using a prism array-based display

    Science.gov (United States)

    Mun, Sungchul; Park, Min-Chul

    2014-12-01

    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.

  11. Virtual reality exposure treatment of agoraphobia: a comparison of computer automatic virtual environment and head-mounted display

    NARCIS (Netherlands)

    Meyerbröker, K.; Morina, N.; Kerkhof, G.; Emmelkamp, P.M.G.; Wiederhold, B.K.; Bouchard, S.; Riva, G.

    2011-01-01

    In this study the effects of virtual reality exposure therapy (VRET) were investigated in patients with panic disorder and agoraphobia. The level of presence in VRET was compared between using either a head-mounted display (HMD) or a computer automatic virtual environment (CAVE). Results indicate

  12. The design and implementation of CRT displays in the TCV real-time simulation

    Science.gov (United States)

    Leavitt, J. B.; Tariq, S. I.; Steinmetz, G. G.

    1975-01-01

    The design and application of computer graphics to the Terminal Configured Vehicle (TCV) program were described. A Boeing 737-100 series aircraft was modified with a second flight deck and several computers installed in the passenger cabin. One of the elements in support of the TCV program is a sophisticated simulation system developed to duplicate the operation of the aft flight deck. This facility consists of an aft flight deck simulator, equipped with realistic flight instrumentation, a CDC 6600 computer, and an Adage graphics terminal; this terminal presents to the simulator pilot displays similar to those used on the aircraft with equivalent man-machine interactions. These two displays form the primary flight instrumentation for the pilot and are dynamic images depicting critical flight information. The graphics terminal is a high speed interactive refresh-type graphics system. To support the cockpit display, two remote CRT's were wired in parallel with two of the Adage scopes.

  13. Science Academies' Refresher Course on Applications of Quantum ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 11. Science Academies' Refresher Course on Applications of Quantum Mechanics: Atoms, Molecules and Radiation. Information and Announcements Volume 20 Issue 11 November 2015 pp 1076-1076 ...

  14. Refresher Course on Geomatic Applications for Sustainable Water ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 14; Issue 6. Refresher Course on Geomatic Applications for Sustainable Water Resources and Environment. Information and Announcements Volume 14 Issue 6 June 2009 pp 630-630 ...

  15. Science Academies' Refresher Course in Advances in Chemical ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 9. Science Academies' Refresher Course in Advances in Chemical Sciences and Sustainable Development. Information and Announcements Volume 19 Issue 9 September 2014 pp 876-876 ...

  16. Science Academies Refresher Course on Traditional and Modern ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 17; Issue 9. Science Academies Refresher Course on Traditional and Modern Approaches in Plant Taxonomy'. Information and Announcements Volume 17 Issue 9 September 2012 pp 921-921 ...

  17. Science Academies' Refresher Course in Foundations of Physical ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 8. Science Academies' Refresher Course in Foundations of Physical Chemistry and its Applications. Information and Announcements Volume 22 Issue 8 August 2017 pp 816-816 ...

  18. Science Academies' Refresher Course on Modern and Ancient ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course on Modern and Ancient Environment and Ecology: Sediments and Biota. Information and Announcements Volume 22 Issue 10 October 2017 pp 973-973 ...

  19. Science Academies' Refresher Course on Cell and Molecular ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 16; Issue 11. Science Academies' Refresher Course on Cell and Molecular Biology Techniques. Information and Announcements Volume 16 Issue 11 November 2011 pp 1101-1101 ...

  20. Fourth Refresher Course in Materials Preparation and Measurement ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 12. Fourth Refresher Course in Materials Preparation and Measurement of Properties. Information and Announcements Volume 19 Issue 12 December 2014 pp 1198-1198 ...

  1. Ninth Refresher Course in Materials Preparation and Measurement ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 12. Ninth Refresher Course in Materials Preparation and Measurement of Properties. Information and Announcements Volume 22 Issue 12 December 2017 pp 1219-1219 ...

  2. Refresher Course in Experimental Physics–Indian Institute of ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 10; Issue 1. Refresher Course in Experimental Physics – Indian Institute of Technology, Guwahat. Information and Announcements Volume 10 Issue 1 January 2005 pp 96-96 ...

  3. Science Academies' Refresher Course in Molecules and Materials ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course in Molecules and Materials Characterization. Information and Announcements Volume 22 Issue 10 October 2017 pp 977-977 ...

  4. Science Academies Refresher Course on Traditional and Modern ...

    Indian Academy of Sciences (India)

    Admin

    /train fare (3-tier. AC) by the shortest route. The applications may be sent to: The Course Coordinator, Refresher Course on Traditional and. Modern Approaches in Plant Taxonomy, Tel.: (080) 2333 0153 Ext.302 Fax: (080) 2333 0277.

  5. Science Academies' Refresher Course on Multiomic Applications in ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 12. Science Academies' Refresher Course on Multiomic Applications in Medicinal Plant Research. Information and Announcements Volume 22 Issue 12 December 2017 pp 1220-1220 ...

  6. Math for scientists refreshing the essentials

    CERN Document Server

    Maurits, Natasha

    2017-01-01

    Accessible and comprehensive, this guide is an indispensable tool for anyone in the sciences – new and established researchers, students and scientists – looking either to refresh their math skills or to prepare for the broad range of math, statistical and data-related challenges they are likely to encounter in their work or studies. In addition to helping scientists improve their knowledge of key mathematical concepts, this unique book will help readers: ·                     Read mathematical symbols ·                     Understand formulas, data or statistical information ·                     Determine medication equivalents ·                     Analyze neuroimaging  Mathematical concepts are presented alongside illustrative and useful real-world scien­tific examples and are further clarified through practical pen-and-paper exercises. Whether you are a student encountering high-level mathematics in your research or...

  7. Color Helmet Mounted Display System with Real Time Computer Generated and Video Imagery for In-Flight Simulation

    Science.gov (United States)

    Sawyer, Kevin; Jacobsen, Robert; Aiken, Edwin W. (Technical Monitor)

    1995-01-01

    NASA Ames Research Center and the US Army are developing the Rotorcraft Aircrew Systems Concepts Airborne Laboratory (RASCAL) using a Sikorsky UH-60 helicopter for the purpose of flight systems research. A primary use of the RASCAL is in-flight simulation for which the visual scene will use computer generated imagery and synthetic vision. This research is made possible in part to a full color wide field of view Helmet Mounted Display (HMD) system that provides high performance color imagery suitable for daytime operations in a flight-rated package. This paper describes the design and performance characteristics of the HMD system. Emphasis is placed on the design specifications, testing, and integration into the aircraft of Kaiser Electronics' RASCAL HMD system that was designed and built under contract for NASA. The optical performance and design of the Helmet mounted display unit will be discussed as well as the unique capabilities provided by the system's Programmable Display Generator (PDG).

  8. Evaluation of a computer-generated perspective tunnel display for flight path following

    Science.gov (United States)

    Grunwald, A. J.; Robertson, J. B.; Hatfield, J. J.

    1980-01-01

    The display was evaluated by monitoring pilot performance in a fixed base simulator with the vehicle dynamics of a CH-47 tandem rotor helicopter. Superposition of the predicted future vehicle position on the tunnel image was also investigated to determine whether, and to what extent, it contributes to better system performance (the best predicted future vehicle position was sought). Three types of simulator experiments were conducted: following a desired trajectory in the presence of disturbances; entering the trajectory from a random position, outside the trajectory; detecting and correcting failures in automatic flight. The tunnel display with superimposed predictor/director symbols was shown to be a very successful combination, which outperformed the other two displays in all three experiments. A prediction time of 4 to 7 sec. was found to optimize trajectory tracking for the given vehicle dynamics and flight condition. Pilot acceptance of the tunnel plus predictor/director display was found to be favorable and the time the pilot needed for familiarization with the display was found to be relatively short.

  9. Application of AI techniques to a voice-actuated computer system for reconstructing and displaying magnetic resonance imaging data

    Science.gov (United States)

    Sherley, Patrick L.; Pujol, Alfonso, Jr.; Meadow, John S.

    1990-07-01

    To provide a means of rendering complex computer architectures languages and input/output modalities transparent to experienced and inexperienced users research is being conducted to develop a voice driven/voice response computer graphics imaging system. The system will be used for reconstructing and displaying computed tomography and magnetic resonance imaging scan data. In conjunction with this study an artificial intelligence (Al) control strategy was developed to interface the voice components and support software to the computer graphics functions implemented on the Sun Microsystems 4/280 color graphics workstation. Based on generated text and converted renditions of verbal utterances by the user the Al control strategy determines the user''s intent and develops and validates a plan. The program type and parameters within the plan are used as input to the graphics system for reconstructing and displaying medical image data corresponding to that perceived intent. If the plan is not valid the control strategy queries the user for additional information. The control strategy operates in a conversation mode and vocally provides system status reports. A detailed examination of the various AT techniques is presented with major emphasis being placed on their specific roles within the total control strategy structure. 1.

  10. Using a helmet-mounted display computer simulation model to evaluate the luminance requirements for symbology

    Science.gov (United States)

    Harding, Thomas H.; Martin, John S.; Rash, Clarence E.

    2005-05-01

    As the Army increases its reliance upon and continues to develop helmet mounted displays (HMDs) or head-up displays (HUDs), it is paramount that displays are developed that meet the operational needs of the warfighter. During the development cycle, questions always arise concerning the operational requirements of the HMD. These include questions concerning luminance, contrast, color and resolution. To provide intelligent answers to these operational questions, a method has been devised to evaluate these issues. Integral to this method is an HMD simulation model that was previously presented at this meeting. The model is continually undergoing improvements with additional features and improved accuracy. The model allows for the simulation of see-through images with overlaid symbology. In this study, symbology was overlaid over eight natural images, one uniform field, and one artificial background composed of moderate to high spatial frequencies. Observers graded the quality of symbology on a scale of 1 to 7, with 7 representing symbology of high contrast and excellent quality. In all, observers graded 200 images (20 images per background scene). These images ranged from an average Michaelson contrast value of about 0.09 to 0.93. We found, as have others, that the complexity of the backgrounds greatly affected the observer"s rating. The simulated images were analyzed and statistical correlates were developed that could relate to the observer"s ratings. Metrics were developed that could help predict the luminance requirements for HMD or HUD symbology.

  11. Effects Of Frame Rates In Video Displays

    Science.gov (United States)

    Kellogg, Gary V.; Wagner, Charles A.

    1991-01-01

    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.

  12. Computational Modeling to Limit the Impact Displays and Indicator Lights Have on Habitable Volume Operational Lighting Constraints

    Science.gov (United States)

    Clark, T. A.; Brainard, G.; Salazar, G.; Johnston, S.; Schwing, B.; Litaker, H.; Kolomenski, A.; Venus, D.; Tran, K.; Hanifin, J.; hide

    2017-01-01

    NASA has demonstrated an interest in improving astronaut health and performance through the installment of a new lighting countermeasure on the International Space Station. The Solid State Lighting Assembly (SSLA) system is designed to positively influence astronaut health by providing a daily change to light spectrum to improve circadian entrainment. Unfortunately, existing NASA standards and requirements define ambient light level requirements for crew sleep and other tasks, yet the number of light-emitting diode (LED) indicators and displays within a habitable volume is currently uncontrolled. Because each of these light sources has its own unique spectral properties, the additive lighting environment ends up becoming something different from what was planned or researched. Restricting the use of displays and indicators is not a solution because these systems provide beneficial feedback to the crew. The research team for this grant used computer-based computational modeling and real-world lighting mockups to document the impact that light sources other than the ambient lighting system contribute to the ambient spectral lighting environment. In particular, the team was focused on understanding the impacts of long-term tasks located in front of avionics or computer displays. The team also wanted to understand options for mitigating the changes to the ambient light spectrum in the interest of maintaining the performance of a lighting countermeasure. The project utilized a variety of physical and computer-based simulations to determine direct relationships between system implementation and light spectrum. Using real-world data, computer models were built in the commercially available optics analysis software Zemax Optics Studio(c). The team also built a mockup test facility that had the same volume and configuration as one of the Zemax models. The team collected over 1200 spectral irradiance measurements, each representing a different configuration of the mockup

  13. Measuring consumers' information acquisition and decision behavior with the computer-based information-display-matrix

    DEFF Research Database (Denmark)

    Aschemann-Witzel, Jessica; Hamm, Ulrich

    2011-01-01

    The former judgement that the process-tracing method information-display-matrix (IDM) lacks external validity should be questioned in the light of technical advances and changing consumer behaviour. The new research environment offers possibilities for a close-to-realistic refinement and further...... development of the method: starting points are choice of location, increased relevance of choice, individual adjustment of task structure, simplified navigation and realistic layout. Used in multi-measurement-approaches, the IDM can provide detailed background information about consumer information behaviour...... prior to decisions reached in interviews or choice experiments. The contribution introduces to the method and its´ development, use and (dis-)advantages. Results of a survey illustrate the options for analysis and indicate that consumer behaviour in the IDM, compared to face-to-face-interviews, is less...

  14. Computer-assisted surgery: virtual- and augmented-reality displays for navigation during urological interventions.

    Science.gov (United States)

    van Oosterom, Matthias N; van der Poel, Henk G; Navab, Nassir; van de Velde, Cornelis J H; van Leeuwen, Fijs W B

    2017-12-22

    To provide an overview of the developments made for virtual- and augmented-reality navigation procedures in urological interventions/surgery. Navigation efforts have demonstrated potential in the field of urology by supporting guidance for various disorders. The navigation approaches differ between the individual indications, but seem interchangeable to a certain extent. An increasing number of pre- and intra-operative imaging modalities has been used to create detailed surgical roadmaps, namely: (cone-beam) computed tomography, MRI, ultrasound, and single-photon emission computed tomography. Registration of these surgical roadmaps with the real-life surgical view has occurred in different forms (e.g. electromagnetic, mechanical, vision, or near-infrared optical-based), whereby the combination of approaches was suggested to provide superior outcome. Soft-tissue deformations demand the use of confirmatory interventional (imaging) modalities. This has resulted in the introduction of new intraoperative modalities such as drop-in US, transurethral US, (drop-in) gamma probes and fluorescence cameras. These noninvasive modalities provide an alternative to invasive technologies that expose the patients to X-ray doses. Whereas some reports have indicated navigation setups provide equal or better results than conventional approaches, most trials have been performed in relatively small patient groups and clear follow-up data are missing. The reported computer-assisted surgery research concepts provide a glimpse in to the future application of navigation technologies in the field of urology.

  15. Computer-assisted orthognathic surgery: waferless maxillary positioning, versatility, and accuracy of an image-guided visualisation display.

    Science.gov (United States)

    Zinser, Max J; Mischkowski, Robert A; Dreiseidler, Timo; Thamm, Oliver C; Rothamel, Daniel; Zöller, Joachim E

    2013-12-01

    There may well be a shift towards 3-dimensional orthognathic surgery when virtual surgical planning can be applied clinically. We present a computer-assisted protocol that uses surgical navigation supplemented by an interactive image-guided visualisation display (IGVD) to transfer virtual maxillary planning precisely. The aim of this study was to analyse its accuracy and versatility in vivo. The protocol consists of maxillofacial imaging, diagnosis, planning of virtual treatment, and intraoperative surgical transfer using an IGV display. The advantage of the interactive IGV display is that the virtually planned maxilla and its real position can be completely superimposed during operation through a video graphics array (VGA) camera, thereby augmenting the surgeon's 3-dimensional perception. Sixteen adult class III patients were treated with by bimaxillary osteotomy. Seven hard tissue variables were chosen to compare (ΔT1-T0) the virtual maxillary planning (T0) with the postoperative result (T1) using 3-dimensional cephalometry. Clinically acceptable precision for the surgical planning transfer of the maxilla (orthognathic planning. Copyright © 2013 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.

  16. An integrated impact assessment and weighting methodology: evaluation of the environmental consequences of computer display technology substitution.

    Science.gov (United States)

    Zhou, Xiaoying; Schoenung, Julie M

    2007-04-01

    Computer display technology is currently in a state of transition, as the traditional technology of cathode ray tubes is being replaced by liquid crystal display flat-panel technology. Technology substitution and process innovation require the evaluation of the trade-offs among environmental impact, cost, and engineering performance attributes. General impact assessment methodologies, decision analysis and management tools, and optimization methods commonly used in engineering cannot efficiently address the issues needed for such evaluation. The conventional Life Cycle Assessment (LCA) process often generates results that can be subject to multiple interpretations, although the advantages of the LCA concept and framework obtain wide recognition. In the present work, the LCA concept is integrated with Quality Function Deployment (QFD), a popular industrial quality management tool, which is used as the framework for the development of our integrated model. The problem of weighting is addressed by using pairwise comparison of stakeholder preferences. Thus, this paper presents a new integrated analytical approach, Integrated Industrial Ecology Function Deployment (I2-EFD), to assess the environmental behavior of alternative technologies in correlation with their performance and economic characteristics. Computer display technology is used as the case study to further develop our methodology through the modification and integration of various quality management tools (e.g., process mapping, prioritization matrix) and statistical methods (e.g., multi-attribute analysis, cluster analysis). Life cycle thinking provides the foundation for our methodology, as we utilize a published LCA report, which stopped at the characterization step, as our starting point. Further, we evaluate the validity and feasibility of our methodology by considering uncertainty and conducting sensitivity analysis.

  17. Science Academies Refresher Course on Differential Equations and ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 4. Science Academies Refresher Course on Differential Equations and their Applications in Science and Engineering (DEASE-2016). Information and Announcements Volume 21 Issue 4 April 2016 pp 388-388 ...

  18. Refresher Course on Tensors and their Applications in Engineering ...

    Indian Academy of Sciences (India)

    ... and a brief write up on your academic activities etc. to: Prof C S. Jog, Coordinator, Refresher Course on Tensors, Department of Mechanical Engineering,. Bangalore-560012, Email: jogc@mecheng.iisc.ernet.in. Research Fellows who wish to participate should also submit a letter of recommendation from their supervisors.

  19. Refresher Training on Maternal and Child Health for Urban ...

    African Journals Online (AJOL)

    Refresher training is given to the health volunteers/workers for updating and upgrading the knowledge & skills to deliver comprehensive and integrated services and to increase female involvement in the healthcare delivery system and also to develop selfhelp mechanisms at the community & family level. This study was ...

  20. Science Academies' Refresher Course in Developmental Biology 16 ...

    Indian Academy of Sciences (India)

    IAS Admin

    The objectives of this Refresher Course are to update the participants about the advances in the field of Developmental Biology; various small animal models used and give hands-on training on some modern biotechnological practices. A variety of teaching methods like lectures, discussion and laboratory work shall ...

  1. Eighth Refresher Course in Materials Preparation and Measurement ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 6. Eighth Refresher Course in Materials Preparation and Measurement of Properties. Information and Announcements Volume 22 Issue 6 June 2017 pp 620-620. Fulltext. Click here to view fulltext PDF. Permanent link:

  2. Science Academies' Refresher Course in Plant Taxonomy and ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course in Plant Taxonomy and Ethnobotany. Information and Announcements Volume 22 Issue 10 October 2017 pp 975-975. Fulltext. Click here to view fulltext PDF. Permanent link:

  3. Science Academies' Refresher Course in Quantum Mechanics Post ...

    Indian Academy of Sciences (India)

    Physics Dept

    2016-02-20

    Feb 20, 2016 ... Science Academies' Refresher Course in Quantum Mechanics at. Post Graduate and Research Department of Physics, Government Arts College,. Melur, Madurai ... http://web-japps.ias.ac.in:8080/Refreshcourse/RCMT.jsp. A printed copy of the application approved by the Head of the institution should be ...

  4. Science Academies' Refresher Course in Advances in Chemical ...

    Indian Academy of Sciences (India)

    IAS Admin

    A Refresher Course in Advances in Chemical Sciences and Sustainable Development for College/University teachers and research scholars will be organized at the Department of Chemistry, School of Chemical Sciences and. Pharmacy, Central University of Rajasthan, Bandarsindri 305 817, Ajmer Dist., Rajasthan for two ...

  5. Refresher Course in'Topics in Mathematics and Physics'

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 12; Issue 1. Refresher Course in 'Topics in Mathematics and Physics'. Information and Announcements Volume 12 Issue 1 January 2007 pp 91-91. Fulltext. Click here to view fulltext PDF. Permanent link:

  6. First Refresher Course in Materials Preparation and Measurement of ...

    Indian Academy of Sciences (India)

    IAS Admin

    Refresher Courses of two-week duration are also entitled to be considered for promotion. Interested applicants must submit their application ONLINE by clicking on the following link http://web-japps.ias.ac.in:8080/Refreshcourse/PMP.jsp. In the case of teacher applicants, a hard copy of the application should be forwarded to ...

  7. Science Academies' 93rd Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 9. Science Academies' 93rd Refresher Course in Experimental Physics. Information and Announcements Volume 22 Issue 9 September 2017 pp 901-901. Fulltext. Click here to view fulltext PDF. Permanent link:

  8. Science Academies' Refresher Course in'Action Zoology: The ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 17; Issue 6. Science Academies' Refresher Course in 'Action Zoology: The Emerging Trends'. Information and Announcements Volume 17 Issue 6 June 2012 pp 619-619. Fulltext. Click here to view fulltext PDF. Permanent link:

  9. Science Academies' Refresher Course on Hydrology of Floods

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 10. Science Academies' Refresher Course on Hydrology of Floods. Information and Announcements Volume 22 Issue 10 October 2017 pp 978-978. Fulltext. Click here to view fulltext PDF. Permanent link:

  10. Science Academies' Refresher Course on Bioinformatics in Modern ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 2. Science Academies' Refresher Course on Bioinformatics in Modern Biology. Information and Announcements Volume 19 Issue 2 February 2014 pp 192-192. Fulltext. Click here to view fulltext PDF. Permanent link:

  11. Science Academies' 91st Refresher Course on Innovations in ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 7. Science Academies' 91st Refresher Course on Innovations in Genetics and Plant Breeding with Special Reference to Biotic and Abiotic Stress. Information and Announcements Volume 22 Issue 7 July 2017 pp 717-717 ...

  12. Eighth Refresher Course in Materials Preparation and Measurement ...

    Indian Academy of Sciences (India)

    conductivity, thermal diffusivity, electrical resistivity of alloys of metals, thermoelectric, dielectric, piezoelectric, ferroelectric and magnetic properties, superconductivity, phase transitions and differ- ential thermal analysis. The Course will be jointly directed by Dr T G Ramesh and Professor R. Srinivasan. Refresher Courses in ...

  13. Science Academies' Refresher Course in Experimental Physics 10 ...

    Indian Academy of Sciences (India)

    2017-05-25

    May 25, 2017 ... A Refresher Course in Experimental Physics will be held at Goa University, Goa from 10 to 25 May 2017 for the benefit of faculty involved in teaching ... experiments are in (a) mechanics, (b) heat, (c) electricity both DC and AC, (d) magnetism, (e) relaxation,. (f) phase sensitive detection technique, and (g) ...

  14. Effects of feed refreshing frequency on growth and carcass ...

    African Journals Online (AJOL)

    UPuser

    were fed individually. At the onset of each refreshing period the lambs were offered fresh feed ad libitum. Daily feed intakes, weekly live weights and carcass characteristics ... Conventionally, feeding units using ad libitum systems use feed troughs that contain sufficient feed to meet ..... Effect of grass or concentrate feeding.

  15. Refresher Course on Lasers and Applications in Chemical Processes

    Indian Academy of Sciences (India)

    Chemical Processes sponsored by Indian Academy of Sciences, Bangalore at National Centre for Ultrafast Processes, University of Madras, Chennai. January 19-31,2004. A Refresher Course on Lasers and ... curriculum vitae (including name, date of birth, email and postal address, educational qualifications, teaching ...

  16. Refresher Course on Mountain Hydrology and Climate Change

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 1. Refresher Course on Mountain Hydrology and Climate Change. Information and Announcements Volume 21 Issue 1 January 2016 pp 106-107. Fulltext. Click here to view fulltext PDF. Permanent link:

  17. Science Academies' 92nd Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    2017-11-21

    Nov 21, 2017 ... A Refresher Course in Experimental Physics will be held at Goa University, Goa from. 6 to 21 November 2017 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. Participants in this course will gain hands-on experience with about twenty five out of forty experiments, with ...

  18. Science Academies' 93rd Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    2017-09-30

    Sep 30, 2017 ... A Refresher Course in Experimental Physics will be held at the Department of Physics, Indian. Institute of Technology Patna, Bihta, India from November 07–22, 2017 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. Participants in this course will gain hands-on ...

  19. Refresher Course on Tensors and their Applications in Engineering ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 11; Issue 7. Refresher Course on Tensors and their Applications in Engineering Sciences. Information and Announcements Volume 11 Issue 7 July 2006 pp 100-100. Fulltext. Click here to view fulltext PDF. Permanent link:

  20. Science Academies' XLVII Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 18; Issue 2. Science Academies' XLVII Refresher Course in Experimental Physics. Information and Announcements Volume 18 Issue 2 February 2013 pp 194-194. Fulltext. Click here to view fulltext PDF. Permanent link:

  1. Science Academies' Refresher Course on Bioinformatics in Modern ...

    Indian Academy of Sciences (India)

    IAS Admin

    A Refresher Course on 'Bioinformatics in Modern Biology' for graduate and postgraduate college/university teachers will be held at School of Life Sciences, Manipal University, Manipal for two weeks from 5 to 17 May 2014. The objective of this Course is to improvise on teaching methodologies incorporating online teaching ...

  2. Science Academies' Sixty-sixth Refresher Course in Experimental ...

    Indian Academy of Sciences (India)

    IAS Admin

    2014-09-30

    Sep 30, 2014 ... at Vidya Vikas Institute of Engineering and Technology,. # 127-128, Lalitadripura Post, Mysore-Bannur Road, Mysore 570 028. Sponsored by Indian Academy of Sciences, Bangalore,. Indian National Science Academy, New Delhi, The National Academy of Sciences, India, Allahabad. A Refresher Course ...

  3. Information and Announcements Refresher Course on Frontiers in ...

    Indian Academy of Sciences (India)

    This Refresher Course for teachers from graduate and post-graduate colleges and univer- sity departments aims at providing a unified view of modern inorganic chemistry and hands-on experience in doing a few selected exciting laboratory experiments. Emphasis will be given to unique interdisciplinary nature of inorganic ...

  4. Science Academies' 91st Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 22; Issue 7. Science Academies' 91st Refresher Course in Experimental Physics. Information and Announcements Volume 22 Issue 7 July 2017 pp 716-716. Fulltext. Click here to view fulltext PDF. Permanent link:

  5. Science Academies' Refresher Course on Modern and Ancient ...

    Indian Academy of Sciences (India)

    Sengupta, AvH Fellow, F.A.Sc., F.N.A (pulaksg@gmail.com). It may be noted that UGC regulations include Refresher Courses in API scores for career advancement. Applications are invited from teachers with experience in teaching undergraduate and postgraduate courses in Earth Science. Motivated research scholars ...

  6. Science Academies' 91st Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    2017-07-30

    Jul 30, 2017 ... that UGC regulations include Refresher Courses in API scores for career advancement. Applications are invited from teachers with experience in teaching undergraduate and postgraduate courses in Engineering and Physics. Motivated students of B.Sc. and M.Sc. Physics courses with keen interest in.

  7. Science Academies' Refresher Course in Experimental Physics 20 ...

    Indian Academy of Sciences (India)

    Indian National Science Academy, New Delhi. The National Academy of Sciences, India, Allahabad. In collaboration with Department of Physics G.B. Pant University for Agriculture and Technology, Pantnagar, Uttarakhand. A Refresher Course in Experimental Physics will be held at G.B.P.U.A & T, Pantnagar, Uttarakhand, ...

  8. Information and Announcements Refresher Course in 'Topics in ...

    Indian Academy of Sciences (India)

    Information and Announcements. Refresher Course in 'Topics in. Mathematics and Physics'. May 14-26,2007 sponsored by Indian ... transforms; probability theory, random walks, and statistics; topics in diffusion, electromag- netism, and mechanics; and topics in statistical mechanics, quantum mechanics, and thermo-.

  9. Refresher Course on Probability, Statistics and Stochastic Processes

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 8; Issue 4. Refresher Course on Probability, Statistics and Stochastic Processes. Information and Announcements Volume 8 Issue 4 April 2003 pp 65-65. Fulltext. Click here to view fulltext PDF. Permanent link:

  10. Fifty-Eighth Refresher Course in Experimental Physics

    Indian Academy of Sciences (India)

    IAS Admin

    teachers in universities and colleges, a few seats will be available for students of III BSc and I MSc physics courses. It has been brought to our attention that teachers in Universities/Colleges who attend Refresher Courses of two-week duration are also entitled to be considered for promotion. Interested applicants must ...

  11. Science Academies Seventy-Fifth Refresher Course in Experimental ...

    Indian Academy of Sciences (India)

    IAS Admin

    A Refresher Course in Experimental Physics will be held at Goa University, Goa from 10 to 25 May 2016 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. Participants in this course will gain hands on experience with about twenty five out of forty experiments, with a low cost kit ...

  12. Science Academies' Refresher Course on Experimental Physics 13 ...

    Indian Academy of Sciences (India)

    2017-09-28

    Sep 28, 2017 ... A Refresher Course in Experimental Physics will be held at Post-Graduate and Research Department of Physics,. Bishop Moore College, Mavelikara, Kerala, , from 1328 September, 2017 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. Participants in this course will ...

  13. Science Academies' 82nd Refresher Course on Experimental Physics

    Indian Academy of Sciences (India)

    IAS Admin

    A Refresher Course in Experimental Physics will be held at Department of Physics, Kakatiya University, Warangal from 6 to 21 December 2016 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. The Course aims to familiarize the participants to gain hands on experience with set of new ...

  14. Science Academies' Refresher Course in Plant Taxonomy and ...

    Indian Academy of Sciences (India)

    A Refresher Course in 'Plant Taxonomy and Ethnobotany' will be held in the Department of Botany,. Yogi Vemana University, Kadapa, from 18 to 31 January 2018 for the benefits of faculty involved in teaching undergraduate and postgraduate courses. Participants in this course will gain practical and theoretical experience ...

  15. Science Academies' 83rd Refresher Course on Experimental Physics

    Indian Academy of Sciences (India)

    IAS Admin

    undergraduate and postgraduate courses in Physics. Participants in this course will gain hands on experience with about 25 experiments designed by Professor R. Srinivasan, the Course Director, Indian Academy of Sciences. Professor R. Srinivasan has conducted such Refresher course in Experimental Physics in more ...

  16. Science Academies' Refresher Course in Experimental Physics 9 ...

    Indian Academy of Sciences (India)

    A Refresher Course in Experimental Physics will be held at Bahra University, Waknaghat, HP, from 9th to. 24th May 2017 for the benefit of faculty involved in teaching undergraduate and postgraduate courses. Par- ticipants in this course will gain hands on experience with about twenty five experiments, with a low cost kit.

  17. Maintenance of memory for melodies: Articulation or attentional refreshing?

    Science.gov (United States)

    Nees, Michael A; Corrini, Ellen; Leong, Peri; Harris, Joanna

    2017-03-23

    Past research on the effects of articulatory suppression on working memory for nonverbal sounds has been characterized by discrepant findings, which suggests that multiple mechanisms may be involved in the rehearsal of nonverbal sounds. In two experiments we examined the potential roles of two theoretical mechanisms of verbal working memory-articulatory rehearsal and attentional refreshing-in the maintenance of memory for short melodies. In both experiments, participants performed a same-different melody comparison task. During an 8-s retention interval, interference tasks were introduced to suppress articulatory rehearsal, attentional refreshing, or both. In Experiment 1, only the conditions that featured articulatory suppression resulted in worse memory performance than in a control condition, and the suppression of both attentional refreshing and articulatory rehearsal concurrently did not impair memory more than articulatory suppression alone. Experiment 2 reproduced these findings and also confirmed that the locus of interference was articulatory and not auditory (i.e., the interference was not attributable to the sound of participants' own voices during articulatory suppression). Both experiments suggested that articulatory rehearsal played a role in the maintenance of melodies in memory, whereas attentional refreshing did not. We discuss potential theoretical implications regarding the mechanisms used for the rehearsal of nonverbal sounds in working memory.

  18. Science Academies' Refresher Course in'Action Zoology: The ...

    Indian Academy of Sciences (India)

    Admin

    teachers, senior research fellows and guest lecturers are also encouraged to apply. Selected participants will be provided local hospitality and round-trip train fare to Allahabad (3- tier AC) by the shortest route. Applications may be sent to: Prof. U. C. Srivastava, Course Director, Refresher Course on. 'Action Zoology: The ...

  19. Science Academies Refresher Course on Advances in Biotechnology

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 16; Issue 1. Science Academies Refresher Course on Advances in Biotechnology. Information and Announcements Volume 16 Issue 1 January 2011 pp 101-101. Fulltext. Click here to view fulltext PDF. Permanent link:

  20. Science Academies' Refresher Course on Multiomic Applications in ...

    Indian Academy of Sciences (India)

    courses in Life Sciences, Agriculture and Technology. Applications from highly motivated Research. Scholars will also be considered. The maximum number of seats will be 35. Teachers who wish to participate in the refresher course may apply through proper channel with the following details: name, date of birth, gender, ...

  1. Refresher Course on Frontier in Atomospheric Sciences

    Indian Academy of Sciences (India)

    Admin

    change, global warming, atmospheric pollution, weather forecasting, climate forecasting, weather modification, physics and dynamics of tropical clouds, thunderstorms, global electric circuit etc. This course will include lectures by eminent scientists and visits to the state-of-art computer and instrumentation facilities.

  2. Refresher Course on Physics of Earthquakes -98 ...

    Indian Academy of Sciences (India)

    V K Gaur, Centre for Mathematical Modelling and Computer Simulation and Indian Institute of. AstrophYSiCS, Bangalore; Ramesh Chander, Panchkula, ... with telephone and e-mail addresses!, qualifications, courses taught, and a statement expressing self-assessment of the ability to follow the proposed course and the.

  3. Refreshing memory traces: thinking of an item improves retrieval from visual working memory.

    Science.gov (United States)

    Souza, Alessandra S; Rerko, Laura; Oberauer, Klaus

    2015-03-01

    This article provides evidence that refreshing, a hypothetical attention-based process operating in working memory (WM), improves the accessibility of visual representations for recall. "Thinking of", one of several concurrently active representations, is assumed to refresh its trace in WM, protecting the representation from being forgotten. The link between refreshing and WM performance, however, has only been tenuously supported by empirical evidence. Here, we controlled which and how often individual items were refreshed in a color reconstruction task by presenting cues prompting participants to think of specific WM items during the retention interval. We show that the frequency with which an item is refreshed improves recall of this item from visual WM. Our study establishes a role of refreshing in recall from visual WM and provides a new method for studying the impact of refreshing on the amount of information we can keep accessible for ongoing cognition. © 2014 New York Academy of Sciences.

  4. Computer-generated holographic near-eye display system based on LCoS phase only modulator

    Science.gov (United States)

    Sun, Peng; Chang, Shengqian; Zhang, Siman; Xie, Ting; Li, Huaye; Liu, Siqi; Wang, Chang; Tao, Xiao; Zheng, Zhenrong

    2017-09-01

    Augmented reality (AR) technology has been applied in various areas, such as large-scale manufacturing, national defense, healthcare, movie and mass media and so on. An important way to realize AR display is using computer-generated hologram (CGH), which is accompanied by low image quality and heavy computing defects. Meanwhile, the diffraction of Liquid Crystal on Silicon (LCoS) has a negative effect on image quality. In this paper, a modified algorithm based on traditional Gerchberg-Saxton (GS) algorithm was proposed to improve the image quality, and new method to establish experimental system was used to broaden field of view (FOV). In the experiment, undesired zero-order diffracted light was eliminated and high definition 2D image was acquired with FOV broadened to 36.1 degree. We have also done some pilot research in 3D reconstruction with tomography algorithm based on Fresnel diffraction. With the same experimental system, experimental results demonstrate the feasibility of 3D reconstruction. These modifications are effective and efficient, and may provide a better solution in AR realization.

  5. Refreshing Sleep and Sleep Continuity Determine Perceived Sleep Quality

    Directory of Open Access Journals (Sweden)

    Eva Libman

    2016-01-01

    Full Text Available Sleep quality is a construct often measured, employed as an outcome criterion for therapeutic success, but never defined. In two studies we examined appraised good and poor sleep quality in three groups: a control group, individuals with obstructive sleep apnea, and those with insomnia disorder. In Study 1 we used qualitative methodology to examine good and poor sleep quality in 121 individuals. In Study 2 we examined sleep quality in 171 individuals who had not participated in Study 1 and evaluated correlates and predictors of sleep quality. Across all six samples and both qualitative and quantitative methodologies, the daytime experience of feeling refreshed (nonrefreshed in the morning and the nighttime experience of good (impaired sleep continuity characterized perceived good and poor sleep. Our results clarify sleep quality as a construct and identify refreshing sleep and sleep continuity as potential clinical and research outcome measures.

  6. A Compressive Superresolution Display

    KAUST Repository

    Heide, Felix

    2014-06-22

    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.

  7. Increased micronucleated cell frequency related to exposure to radiation emitted by computer cathode ray tube video display monitors

    Directory of Open Access Journals (Sweden)

    Carbonari Karina

    2005-01-01

    Full Text Available It is well recognized that electromagnetic fields can affect the biological functions of living organisms at both cellular and molecular level. The potential damaging effects of electromagnetic fields and very low frequency and extremely low frequency radiation emitted by computer cathode ray tube video display monitors (VDMs has become a concern within the scientific community. We studied the effects of occupational exposure to VDMs in 10 males and 10 females occupationally exposed to VDMs and 20 unexposed control subjects matched for age and sex. Genetic damage was assessed by examining the frequency of micronuclei in exfoliated buccal cells and the frequency of other nuclear abnormalities such as binucleated and broken egg cells. Although there were no differences regarding binucleated cells between exposed and control individuals our analysis revealed a significantly higher frequency of micronuclei (p < 0.001 and broken egg cells (p < 0.05 in individuals exposed to VDMs as compared to unexposed. We also found that the differences between individuals exposed to VDMs were significantly related to the sex of the individuals and that there was an increase in skin, central nervous system and ocular disease in the exposed individuals. These preliminary results indicate that microcomputer workers exposed to VDMs are at risk of significant cytogenetic damage and should periodically undergo biological monitoring.

  8. LCD and CRT display of storage phosphor plate and limited cone beam computed tomography images for the evaluation of root canal fillings.

    Science.gov (United States)

    Baksi, B Güniz; Soğur, Elif; Gröndahl, Hans-Göran

    2009-03-01

    The aim was to compare quality of liquid crystal display (LCD) and high resolution cathode ray tube (CRT) screens for the evaluation of length and homogeneity of root canal fillings in storage phosphor plate (SPP) and limited cone beam computed tomography (LCBCT) images. Endodontic treatment was performed to 17 extracted permanent lower incisor teeth. Images of each tooth positioned in a dried mandible were obtained with Digora SPP and Accu-I-Tomo LCBCT systems. Six observers scored the quality of all images on CRT and LCD screens. Results were compared using McNemar's and Cochran's Q tests (p LCD displays (p > 0.05). Agreement among observers' scores was higher with CRT display. Within the limits of this ex vivo study, differences between LCD and CRT monitors for the evaluation of root canal fillings are clinically insignificant independent on whether conventional radiographs, captured by means of image plates, or cone beam images are being displayed.

  9. Social Robots vs. Computer Display: Does the Way Social Stories Are Delivered Make a Difference for Their Effectiveness on ASD Children?

    Science.gov (United States)

    Pop, Cristina A.; Simut, Ramona E.; Pintea, Sebastian; Saldien, Jelle; Rusu, Alina S.; Vanderfaeillie, Johan; David, Daniel O.; Lefeber, Dirk; Vanderborght, Bram

    2013-01-01

    Background and Objectives: The aim of this exploratory study is to test whether social stories presented by a social robot have a greater effect than ones presented on a computer display in increasing the independency in expressing social abilities of children with autism spectrum disorders (ASD). Although much progress has been made in developing…

  10. Batch fabrication of optical actuators using nanotube-elastomer composites towards refreshable Braille displays

    Science.gov (United States)

    Camargo, C. J.; Campanella, H.; Marshall, J. E.; Torras, N.; Zinoviev, K.; Terentjev, E. M.; Esteve, J.

    2012-07-01

    This paper reports an opto-actuable device fabricated using micro-machined silicon moulds. The actuating component of the device is made from a composite material containing carbon nanotubes (CNTs) embedded in a liquid crystal elastomer (LCE) matrix. We demonstrate the fabrication of a patterned LCE-CNT film by a combination of mechanical stretching and thermal cross-linking. The resulting poly-domain LCE-CNT film contains ‘blister-shaped’ mono-domain regions, which reversibly change their shape under light irradiation and hence can be used as dynamic Braille dots. We demonstrate that blisters with diameters of 1.0 and 1.5 mm, and wall thickness 300 µm, will mechanically contract under irradiation by a laser diode with optical power up to 60 mW. The magnitude of this contraction was up to 40 µm, which is more than 10% of their height in the ‘rest’ state. The stabilization time of the material is less than 6 s for both actuation and recovery. We also carried out preliminary tests on the repeatability of this photo-actuation process, observing no material or performance degradation. This manufacturing approach establishes a starting point for the design and fabrication of wide-area tactile actuators, which are promising candidates for the development of new Braille reading applications for the visually impaired.

  11. Gaze contingent hologram synthesis for holographic head-mounted display

    Science.gov (United States)

    Hong, Jisoo; Kim, Youngmin; Hong, Sunghee; Shin, Choonsung; Kang, Hoonjong

    2016-03-01

    Development of display and its related technologies provides immersive visual experience with head-mounted-display (HMD). However, most available HMDs provide 3D perception only by stereopsis, lack of accommodation depth cues. Recently, holographic HMD (HHMD) arises as one viable option to resolve this problem because hologram is known to provide full set of depth cues including accommodation. Moreover, by virtue of increasing computational power, hologram synthesis from 3D object represented by point cloud can be calculated in real time even with rigorous Rayleigh-Sommerfeld diffraction formula. However, in HMD, rapid gaze change of the user requires much faster refresh rate, which means that much faster hologram synthesis is indispensable in HHMD. Because the visual acuity falls off in the visual periphery, we propose here to accelerate synthesizing hologram by differentiating density of point cloud projected on the screen. We classify the screen into multiple layers which are concentric circles with different radii, where the center is aligned with gaze of user. Layer with smaller radius is closer to the region of interest, hence, assigned with higher density of point cloud. Because the computation time is directly related to the number of points in point cloud, we can accelerate synthesizing hologram by lowering density of point cloud in the visual periphery. Cognitive study reveals that user cannot discriminate those degradation in the visual periphery if the parameters are properly designed. Prototype HHMD system will be provided for verifying the feasibility of our method, and detailed design scheme will be discussed.

  12. Computer graphics of numerical simulation of siltation using a three-dimensional display system. Computer graphics ni yoru siltation suchi keisan kekka no sanjigen hyoji ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Tsuruya, H.; Yoshinaga, H. (Port and Harbour Research Institute, Kanagawa (Japan))

    1992-12-01

    A three-dimensional display system of siltation developed for estimating the mud sedimentation at the route and the roadstead from the multi-layer level model was reported. The system aimed at displaying rapidly and clearly the massive calculation results. The system is now working on the Sun SPARC station, displaying in color the topography, flow rate vector, particle trace, mud density, water level, and sedimentation. The siltation program can calculate the multi-layer part in detailed grids. It consists of calculation of flow field, wave field, and sedimentation. The input data of the display system are the results of calculation of siltation program. It includes the area data, grid data, layer thickness data, and water depth data. It was confirmed that the efficient calculation was possible because of easiness of displaying the calculation results in the course of calculation by preparing the display example of topography etc. 4 refs., 17 figs.

  13. AMPS data management requirements study, appendix 1. [user manuals (computer programs)/display devices - computerized simulation/experimentation/ionosphere

    Science.gov (United States)

    1975-01-01

    Flow charts and display formats for the simulation of five experiments are given. The experiments are: (1) electromagnetic wave transmission; (2) passive observations of ambient plasma; (3) ionospheric measurements with subsatellite; (4) electron accelerator beam measurements; and (5) measurement of acoustical gravity waves in the sodium layer using lasers. A detailed explanation of the simulation procedure, definition of variables, and an explanation of how the experimenter makes display choices is also presented. A functional description is included on each flow chart and the assumptions and definitions of terms and scope of the flow charts and displays are presented.

  14. Evaluation of Visualization Tools for Computer Network Defense Analysts: Display Design, Methods, and Results for a User Study

    Science.gov (United States)

    2016-11-01

    2.38 “I easily understood the visualization of the tabular display.” 24 1 0 1 5 17 4.54 “The manipulation of the visualization’s features of the...graphical displays.” 14 0 0 3 6 5 4.14 “I easily understood the visualization of the tabular display.” 15 0 1 3 4 7 4.13 “The manipulation of the...used to represent trend analyses and case studies, they are strongest.” • “The table was easy to manipulate and visualize , I could see multiple items

  15. Speed in Information Processing with a Computer Driven Visual Display in a Real-time Digital Simulation. M.S. Thesis - Virginia Polytechnic Inst.

    Science.gov (United States)

    Kyle, R. G.

    1972-01-01

    Information transfer between the operator and computer-generated display systems is an area where the human factors engineer discovers little useful design data relating human performance to system effectiveness. This study utilized a computer-driven, cathode-ray-tube graphic display to quantify human response speed in a sequential information processing task. The performance criteria was response time to sixteen cell elements of a square matrix display. A stimulus signal instruction specified selected cell locations by both row and column identification. An equal probable number code, from one to four, was assigned at random to the sixteen cells of the matrix and correspondingly required one of four, matched keyed-response alternatives. The display format corresponded to a sequence of diagnostic system maintenance events, that enable the operator to verify prime system status, engage backup redundancy for failed subsystem components, and exercise alternate decision-making judgements. The experimental task bypassed the skilled decision-making element and computer processing time, in order to determine a lower bound on the basic response speed for given stimulus/response hardware arrangement.

  16. Future of photorefractive based holographic 3D display

    Science.gov (United States)

    Blanche, P.-A.; Bablumian, A.; Voorakaranam, R.; Christenson, C.; Lemieux, D.; Thomas, J.; Norwood, R. A.; Yamamoto, M.; Peyghambarian, N.

    2010-02-01

    The very first demonstration of our refreshable holographic display based on photorefractive polymer was published in Nature early 20081. Based on the unique properties of a new organic photorefractive material and the holographic stereography technique, this display addressed a gap between large static holograms printed in permanent media (photopolymers) and small real time holographic systems like the MIT holovideo. Applications range from medical imaging to refreshable maps and advertisement. Here we are presenting several technical solutions for improving the performance parameters of the initial display from an optical point of view. Full color holograms can be generated thanks to angular multiplexing, the recording time can be reduced from minutes to seconds with a pulsed laser, and full parallax hologram can be recorded in a reasonable time thanks to parallel writing. We also discuss the future of such a display and the possibility of video rate.

  17. Computational Modeling to Limit the Impact Displays and Indicator Lights Have on Habitable Volume Operational Lighting Constraints

    Science.gov (United States)

    Clark, T. A.; Salazar, G. A.; Brainard, G. C.; Litaker, H. L.; Hanifin, J.; Schwing, B. M.

    2016-01-01

    Even with no ambient lighting system "on", the International Space Station glows at night. The glow is caused by indicator lamps and displays that are not included with the specification of the ambient lighting system. How does this impact efforts to improve the astronaut's lighting environment to promote more effective sleep patterns? Do the extra indicators and displays add enough light to change the spectrum of light the crew sees during the day as well? If spacecraft environments are specifically engineered to have an ambient lighting system that emits a spectrum promoting a healthy circadian response, is there a way control the impact? The goal of this project is to investigate how additional light sources, such as displays and indicators change the effective light spectrum of the architectural lighting system and how impacts can be mitigated.

  18. Working with Excel refreshing math skills for management

    CERN Document Server

    Chaffe-Stengel, Priscilla

    2013-01-01

    Managers and analysts routinely collect and examine key performance measures to better understand their operations and make good decisions. Being able to render the complexity of operations data into a coherent account of significant events requires an understanding of how to work well in the electronic environment with raw data. Although some statistical and financial techniques for analyzing data are sophisticated and require specialized expertise, there are methods that are understandable and applicable by anyone with basic algebra skills and the support of a spreadsheet package. And this book brings these understandable tools to light. This book gives you real insight: To refresh fundamental mathematical operations that broadly support statistical and financial equations and formulas To perform business analysis in Excel spreadsheets To facilitate graphic representations of data To create mathematical models in spreadsheets.

  19. Displaying Data As Movies

    Science.gov (United States)

    Moore, Judith G.

    1992-01-01

    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.

  20. Human Computer Interface Design Criteria. Volume 2: Space System Operations Displays -SMC-S-023, Vol 2 (2010)

    Science.gov (United States)

    2010-03-19

    Pattern Use neutral colors (unsaturated hues, e.g., pastel colors or light gray) providing sufficient color difference to distinguish between screen...specific function. When used, pastel colors are displayed in the title bar. For example, color coding title bars of windows associated with particular

  1. Age and Individual Differences in Controlled Force Exertion Measured by a Computer-Generated Sinusoidal and Quasi-Random Display

    Science.gov (United States)

    Nagasawa, Yoshinori; Demura, Shinichi

    2010-01-01

    This study examined age group and individual differences in controlled force exertion by emulating sinusoidal and quasi-random waveforms in 222 right-handed female adults aged 20 to 86 years. The subjects matched their submaximal grip strength by the dominant hand to changing demand values displayed as either a sinusoidal or a quasi-random…

  2. Computational Modeling to Limit the Impact Displays and Indicator Lights Have on Habitable Volume Operational Lighting Constraints

    Science.gov (United States)

    Clark, T. A.; Salazar, G. A.; Brainard, G. C.; Kolomenski, A.; Hanifin, J.; Schwin, B. M.

    2017-01-01

    NASA has demonstrated an interest in improving astronaut health and performance through the installment of a new lighting countermeasure on the International Space Station. The Solid State Lighting Assembly (SSLA) system is designed to positively influence astronaut health by providing a daily change to light spectrum to improve circadian entrainment. Unfortunately, existing NASA standards and requirements define ambient light level requirements for crew sleep and other tasks, yet the number of light-emitting diode (LED) indicators and displays within a habitable volume is currently uncontrolled. Because each of these light sources has its own unique spectral properties, the additive lighting environment ends up becoming something different from what was planned or researched. Restricting the use of displays and indicators is not a solution because these systems provide beneficial crew feedback.

  3. AMPS data management requirements study. [user manuals (computer programs)/display devices - computerized simulation/experimentation/ionosphere

    Science.gov (United States)

    1975-01-01

    A data simulation is presented for instruments and associated control and display functions required to perform controlled active experiments of the atmosphere. A comprehensive user's guide is given for the data requirements and software developed for the following experiments: (1) electromagnetic wave transmission; (2) passive observation of ambient plasmas; (3) ionospheric measurements with a subsatellite; (4) electron accelerator beam measurements; and (5) measurement of acoustic gravity waves in the sodium layer using lasers. A complete description of each experiment is given.

  4. A Computer Aided Instruction Tutorial for the Ramtek 9400 Color Graphics Display System at the Naval Postgraduate School Monterey, California.

    Science.gov (United States)

    1981-12-01

    Univesity , 1971 Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN INFORMATION SYSTEMS from the NAVAL...of the graphics computer. The Socratic or tutorial method of intruction has long been acknowledged as an educational ideal. It is not normally used...Computer Aided Instruction (CAI) for developing application software is the subject of this thesis. The history and growth of CAI, its educational goals

  5. Cloud archiving and data mining of High-Resolution Rapid Refresh forecast model output

    Science.gov (United States)

    Blaylock, Brian K.; Horel, John D.; Liston, Samuel T.

    2017-12-01

    Weather-related research often requires synthesizing vast amounts of data that need archival solutions that are both economical and viable during and past the lifetime of the project. Public cloud computing services (e.g., from Amazon, Microsoft, or Google) or private clouds managed by research institutions are providing object data storage systems potentially appropriate for long-term archives of such large geophysical data sets. We illustrate the use of a private cloud object store developed by the Center for High Performance Computing (CHPC) at the University of Utah. Since early 2015, we have been archiving thousands of two-dimensional gridded fields (each one containing over 1.9 million values over the contiguous United States) from the High-Resolution Rapid Refresh (HRRR) data assimilation and forecast modeling system. The archive is being used for retrospective analyses of meteorological conditions during high-impact weather events, assessing the accuracy of the HRRR forecasts, and providing initial and boundary conditions for research simulations. The archive is accessible interactively and through automated download procedures for researchers at other institutions that can be tailored by the user to extract individual two-dimensional grids from within the highly compressed files. Characteristics of the CHPC object storage system are summarized relative to network file system storage or tape storage solutions. The CHPC storage system is proving to be a scalable, reliable, extensible, affordable, and usable archive solution for our research.

  6. Effective Monitor Display Design.

    Science.gov (United States)

    Harrell, William

    1999-01-01

    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)

  7. Flexible displays, rigid designs?

    DEFF Research Database (Denmark)

    Hornbæk, Kasper

    2015-01-01

    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....

  8. Computer graphics application in the engineering design integration system

    Science.gov (United States)

    Glatt, C. R.; Abel, R. W.; Hirsch, G. N.; Alford, G. E.; Colquitt, W. N.; Stewart, W. A.

    1975-01-01

    The computer graphics aspect of the Engineering Design Integration (EDIN) system and its application to design problems were discussed. Three basic types of computer graphics may be used with the EDIN system for the evaluation of aerospace vehicles preliminary designs: offline graphics systems using vellum-inking or photographic processes, online graphics systems characterized by direct coupled low cost storage tube terminals with limited interactive capabilities, and a minicomputer based refresh terminal offering highly interactive capabilities. The offline line systems are characterized by high quality (resolution better than 0.254 mm) and slow turnaround (one to four days). The online systems are characterized by low cost, instant visualization of the computer results, slow line speed (300 BAUD), poor hard copy, and the early limitations on vector graphic input capabilities. The recent acquisition of the Adage 330 Graphic Display system has greatly enhanced the potential for interactive computer aided design.

  9. Computer-Based Graphical Displays for Enhancing Mental Animation and Improving Reasoning in Novice Learning of Probability

    Science.gov (United States)

    Kaplan, Danielle E.; Wu, Erin Chia-ling

    2006-01-01

    Our research suggests static and animated graphics can lead to more animated thinking and more correct problem solving in computer-based probability learning. Pilot software modules were developed for graduate online statistics courses and representation research. A study with novice graduate student statisticians compared problem solving in five…

  10. Response time accuracy in Apple Macintosh computers.

    Science.gov (United States)

    Neath, Ian; Earle, Avery; Hallett, Darcy; Surprenant, Aimée M

    2011-06-01

    The accuracy and variability of response times (RTs) collected on stock Apple Macintosh computers using USB keyboards was assessed. A photodiode detected a change in the screen's luminosity and triggered a solenoid that pressed a key on the keyboard. The RTs collected in this way were reliable, but could be as much as 100 ms too long. The standard deviation of the measured RTs varied between 2.5 and 10 ms, and the distributions approximated a normal distribution. Surprisingly, two recent Apple-branded USB keyboards differed in their accuracy by as much as 20 ms. The most accurate RTs were collected when an external CRT was used to display the stimuli and Psychtoolbox was able to synchronize presentation with the screen refresh. We conclude that RTs collected on stock iMacs can detect a difference as small as 5-10 ms under realistic conditions, and this dictates which types of research should or should not use these systems.

  11. Neuroimaging a single thought: dorsolateral PFC activity associated with refreshing just-activated information.

    Science.gov (United States)

    Raye, Carol L; Johnson, Marcia K; Mitchell, Karen J; Reeder, John A; Greene, Erich J

    2002-02-01

    Neuroimaging studies of human working memory (WM) show conflicting results regarding whether dorsolateral prefrontal cortex (PFC) contributes to maintaining information in consciousness or is recruited primarily when information must be manipulated. Using functional magnetic resonance imaging (fMRI), we looked at a minimal maintenance process--thinking back to a single, just-seen stimulus (refreshing). We found greater activity in left dorsolateral PFC (BA9) when participants refreshed a word compared to reading a word once or a second time. Furthermore, recognition memory was subsequently more accurate and faster for items that had been refreshed, demonstrating that a single thought that maintains activation can have consequences for long-term memory. Our fMRI results call into question any class of models of the functional organization of PFC and WM that associates simple and/or maintenance processes only with ventrolateral PFC or that associates dorsolateral PFC only with more complex processes such as manipulation.

  12. Long-term semantic representations moderate the effect of attentional refreshing on episodic memory.

    Science.gov (United States)

    Loaiza, Vanessa M; Duperreault, Kayla A; Rhodes, Matthew G; McCabe, David P

    2015-02-01

    The McCabe effect (McCabe, Journal of Memory and Language 58:480-494, 2008) refers to an advantage in episodic memory (EM) retrieval for memoranda studied in complex span versus simple span tasks, particularly for memoranda presented in earlier serial positions. This finding has been attributed to the necessity to refresh memoranda during complex span tasks that, in turn, promotes content-context binding in working memory (WM). Several frameworks have conceptualized WM as being embedded in long-term memory. Thus, refreshing may be less efficient when memoranda are not well-established in long-term semantic memory (SM). To investigate this, we presented words and nonwords in simple and complex span trials in order to manipulate the long-term semantic representations of the memoranda with the requirement to refresh the memoranda during WM. A recognition test was administered that required participants to make a remember-know decision for each memorandum recognized as old. The results replicated the McCabe effect, but only for words, and the beneficial effect of refreshing opportunities was exclusive to recollection. These results extend previous research by indicating that the predictive relationship between WM refreshing and long-term EM is specific to recollection and, furthermore, moderated by representations in long-term SM. This supports the predictions of WM frameworks that espouse the importance of refreshing in content-context binding, but also those that view WM as being an activated subset of and, therefore, constrained by the contents of long-term memory.

  13. Addressing model uncertainty through stochastic parameter perturbations within the High Resolution Rapid Refresh (HRRR) ensemble

    Science.gov (United States)

    Wolff, J.; Jankov, I.; Beck, J.; Carson, L.; Frimel, J.; Harrold, M.; Jiang, H.

    2016-12-01

    It is well known that global and regional numerical weather prediction ensemble systems are under-dispersive, producing unreliable and overconfident ensemble forecasts. Typical approaches to alleviate this problem include the use of multiple dynamic cores, multiple physics suite configurations, or a combination of the two. While these approaches may produce desirable results, they have practical and theoretical deficiencies and are more difficult and costly to maintain. An active area of research that promotes a more unified and sustainable system for addressing the deficiencies in ensemble modeling is the use of stochastic physics to represent model-related uncertainty. Stochastic approaches include Stochastic Parameter Perturbations (SPP), Stochastic Kinetic Energy Backscatter (SKEB), Stochastic Perturbation of Physics Tendencies (SPPT), or some combination of all three. The focus of this study is to assess the model performance within a convection-permitting ensemble at 3-km grid spacing across the Contiguous United States (CONUS) when using stochastic approaches. For this purpose, the test utilized a single physics suite configuration based on the operational High-Resolution Rapid Refresh (HRRR) model, with ensemble members produced by employing stochastic methods. Parameter perturbations were employed in the Rapid Update Cycle (RUC) land surface model and Mellor-Yamada-Nakanishi-Niino (MYNN) planetary boundary layer scheme. Results will be presented in terms of bias, error, spread, skill, accuracy, reliability, and sharpness using the Model Evaluation Tools (MET) verification package. Due to the high level of complexity of running a frequently updating (hourly), high spatial resolution (3 km), large domain (CONUS) ensemble system, extensive high performance computing (HPC) resources were needed to meet this objective. Supercomputing resources were provided through the National Center for Atmospheric Research (NCAR) Strategic Capability (NSC) project support

  14. 78 FR 19442 - Public Safety and Homeland Security Bureau Seeks To Refresh the Record Regarding Options for...

    Science.gov (United States)

    2013-04-01

    ... COMMISSION 47 CFR Part 20 Public Safety and Homeland Security Bureau Seeks To Refresh the Record Regarding... Commission's (Commission) Public Safety and Homeland Security Bureau (PSHSB) seeks to refresh the record.... David S. Turetsky, Chief, Public Safety and Homeland Security Bureau. BILLING CODE 6712-01-P ...

  15. Compressive light field displays.

    Science.gov (United States)

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

    2012-01-01

    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.

  16. New refresher training in the use of self-rescue masks

    CERN Multimedia

    HSE Unit

    2012-01-01

    Photos of the training session for self-rescue mask instructors held on 21 March 2012 – 10 new instructors followed the coursePhotos of the training session for self-rescue mask instructors held on 21 March 2012 – 10 new instructors followed the course   A refresher course in the use of self-rescue masks has been added to the CERN training catalogue. Sign up! More than 3500 people have followed the course since it was introduced in 2009. Taking account of the forthcoming long shutdown, requests for follow-up training from course participants and recent changes in the course content, the HSE Unit has decided to place a three-year limit on the validity of the initial training and to introduce a refresher course. The new refresher course is open to all personnel having completed the initial course at least 2 years ago. The course, "Recyclage Formation masque auto-sauveteur » / "Refresher course Self-Rescue Mask Training", (code No. 077...

  17. 76 FR 10403 - Hewlett Packard (HP), Global Product Development, Engineering Workstation Refresh Team, Working...

    Science.gov (United States)

    2011-02-24

    ... Workstation Refresh Team, Working On-Site at General Motors Corporation, Milford, MI; Notice of Revised... Engineering Application Support Team, working on-site at General Motors Corporation, Milford, Michigan... Team, working on-site at General Motors Corporation, Milford, Michigan, who became totally or partially...

  18. Impact of filter convolution and displayed field of view on estimation of coronary Agatston scores in low-dose lung computed tomography.

    Science.gov (United States)

    Wan, Yung-Liang; Tsay, Pei-Kwei; Wu, Patricia Wanping; Juan, Yu-Hsiang; Tsai, Hui-Yu; Lin, Chung-Yin; Yeh, Chih-Sheng; Wang, Chun-Hua; Chen, Chun-Chi

    2017-06-01

    Coronary artery calcification (CAC) may be quantified on low-dose computed tomography (CT) of the lung (LDCT). This study aims to evaluate the effects of filter convolution (FC) and displayed field of view (dFOV) in a Toshiba 320-row CT scanner in quantifying CAC, and to compare the CAC scores obtained by LDCT with standard cardiac CT. Fifty subjects (52 to 85years, mean 68.5, 36 males) with visible CAC underwent both standard cardiac CT and LDCT. CAC scores were obtained from standard cardiac CT using conventional FC12(22) (FC12 with 22-cm dFOV) and four different LDCT protocols: FC02(22), FC02(40), FC08(22), and FC08(40). CAC scores obtained by each LDCT protocol were compared with those obtained by standard cardiac CT. CAC scores obtained by all four LDCT protocols were well correlated with those by standard protocol (Pearson's coefficient=0.978 to 0.987, pToshiba 320-row CT scanner, CAC scores obtained by FC08(22) agree well with standard cardiac CT. Copyright © 2017 Elsevier Ireland Ltd. All rights reserved.

  19. Improved Retention of Chest Compression Psychomotor Skills With Brief "Rolling Refresher" Training.

    Science.gov (United States)

    Niles, Dana E; Nishisaki, Akira; Sutton, Robert M; Elci, Okan U; Meaney, Peter A; OʼConnor, Kathleen A; Leffelman, Jessica; Kramer-Johansen, Jo; Berg, Robert A; Nadkarni, Vinay

    2017-08-01

    High-quality cardiopulmonary resuscitation (CPR) is critical to improve survival from cardiac arrest. However, cardiopulmonary resuscitation knowledge and psychomotor skill proficiency are transient. We hypothesized that brief, in situ refresher training will improve chest compression (CC) psychomotor skill retention for bedside providers. Nurses completed a baseline skill evaluation of CC quality 6 months after traditional basic life support recertification. Data collected using ResusciAnne with SkillReporter included the following: CC depth, rate, complete release, and correct hand position. Total compliance was defined as 100% CC with depth of 50 mm or greater, rate of 100/min or greater, and more than 90% complete release. After the baseline evaluation, the subjects completed "Rolling Refresher" (RR) CC psychomotor training using audiovisual feedback every 2 to 3 months for 12 months until 30 seconds of CCs fulfilling total compliance criteria was achieved. Chest compression quality evaluations were repeated twice ("RR 6 month" and "RR 12 month" evaluation) after implementation of RR program. Thirty-seven providers enrolled and completed the baseline evaluation. Mean depth was 36.3 (9.7) mm, and 8% met criteria for depth, 35% for rate, and 5% for total compliance. After RRs were implemented, CC quality improved significantly at RR 6-month evaluation: odds ratio for meeting criteria were the following: depth of 35.1 (95% confidence interval = 2.5496, P = 0.009) and total compliance of 22.3 (95% confidence interval = 2.1239, P = 0.010). There was no difference in CC quality at RR 12-month versus RR 6-month evaluation. Retention of CC psychomotor skill quality is limited to 6 months after traditional basic life support recertification. Rolling Refresher CC training can significantly improve retention of CC psychomotor skills. Whether CC skills are improved, maintained, or deteriorate after 12 months of Refresher training and optimal frequency of Refreshers is

  20. Electrophysiological correlates of refreshing: Event-related potentials associated with directing reflective attention to face, scene, or word representations

    Science.gov (United States)

    Johnson, Matthew R.; McCarthy, Gregory; Muller, Kathleen A.; Brudner, Samuel N.; Johnson, Marcia K.

    2016-01-01

    Refreshing is the component cognitive process of directing reflective attention to one of several active mental representations. Previous studies using functional magnetic resonance imaging (fMRI) suggested that refresh tasks involve a component process of initiating refreshing as well as the top-down modulation of representational regions central to refreshing. However, those studies were limited by fMRI’s low temporal resolution. In the present study, we used electroencephalography (EEG) to examine the timecourse of refreshing on the scale of milliseconds rather than seconds. Event-related potential (ERP) analyses showed that a typical refresh task does have a distinct electrophysiological response as compared to a control condition, and includes at least two main temporal components: an earlier (~400ms) positive peak reminiscent of a P3 response, and a later (~800ms–1400ms) sustained positivity over several sites reminiscent of the late directing attention positivity (LDAP). Overall, the evoked potentials for refreshing representations from three different visual categories (faces, scenes, words) were similar, but multivariate pattern analysis (MVPA) showed that some category information was nonetheless present in the EEG signal. When related to previous fMRI studies, these results are consistent with a two-phase model, with the first phase dominated by frontal control signals involved in initiating refreshing and the second by the top-down modulation of posterior perceptual cortical areas that constitutes refreshing a representation. This study also lays the foundation for future studies of the neural correlates of reflective attention at a finer temporal resolution than is possible using fMRI. PMID:25961640

  1. Reexamination of Color Vision Standards, Part 2. A Computational Method to Assess the Effect of Color Deficiencies in Using ATC Displays

    Science.gov (United States)

    2006-03-01

    task performance. As long as an object, such as the menu bar of a display, can be segmented from its surround, observers can direct their eyes to...1986). Space, colour and typography on visual display terminals. Behav and Information Technol; 5(2): 99-118. Vienot F, Brettel H, Mollon JD (1999

  2. The case for transparent depth display

    NARCIS (Netherlands)

    Kooi, F.L.

    2003-01-01

    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

  3. Application of mathematical models for the prediction of adsorption isotherms in solid mixture for mango powder refreshment

    Directory of Open Access Journals (Sweden)

    Edmar Clemente

    2011-09-01

    Full Text Available Solid mixtures for refreshment are already totally integrated to the Brazilian consumers' daily routine, because of their quick preparation method, yield and reasonable price - quite lower if compared to 'ready-to-drink' products or products for prompt consumption, what makes them economically more accessible to low-income populations. Within such a context, the aim of this work was to evaluate the physicochemical and mineral composition, as well as the hygroscopic behavior of four different brands of solid mixture for mango refreshment. The BET, GAB, Oswim and Henderson mathematical models were built through the adjustment of experimental data to the isotherms of adsorption. Results from the physiochemical evaluation showed that the solid mixtures for refreshments are considerable sources of ascorbic acid and reductor sugar; and regarding mineral compounds, they are significant sources of calcium, sodium and potassium. It was also verified that the solid mixtures for refreshments of the four studied brands are considered highly hygroscopic.

  4. Universal Numeric Segmented Display

    OpenAIRE

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

    2010-01-01

    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...

  5. Stereoscopic-3D display design: a new paradigm with Intel Adaptive Stable Image Technology [IA-SIT

    Science.gov (United States)

    Jain, Sunil

    2012-03-01

    Stereoscopic-3D (S3D) proliferation on personal computers (PC) is mired by several technical and business challenges: a) viewing discomfort due to cross-talk amongst stereo images; b) high system cost; and c) restricted content availability. Users expect S3D visual quality to be better than, or at least equal to, what they are used to enjoying on 2D in terms of resolution, pixel density, color, and interactivity. Intel Adaptive Stable Image Technology (IA-SIT) is a foundational technology, successfully developed to resolve S3D system design challenges and deliver high quality 3D visualization at PC price points. Optimizations in display driver, panel timing firmware, backlight hardware, eyewear optical stack, and synch mechanism combined can help accomplish this goal. Agnostic to refresh rate, IA-SIT will scale with shrinking of display transistors and improvements in liquid crystal and LED materials. Industry could profusely benefit from the following calls to action:- 1) Adopt 'IA-SIT S3D Mode' in panel specs (via VESA) to help panel makers monetize S3D; 2) Adopt 'IA-SIT Eyewear Universal Optical Stack' and algorithm (via CEA) to help PC peripheral makers develop stylish glasses; 3) Adopt 'IA-SIT Real Time Profile' for sub-100uS latency control (via BT Sig) to extend BT into S3D; and 4) Adopt 'IA-SIT Architecture' for Monitors and TVs to monetize via PC attach.

  6. 50-in. time-multiplexed autostereoscopic display

    Science.gov (United States)

    Dodgson, Neil A.; Moore, John R.; Lang, Stewart R.; Martin, Graham J.; Canepa, Peter M.

    2000-05-01

    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.

  7. The Effect of Display Rate and Memory Support on Correct Responses, Trials, Total Instructional Time and Response Latency in a Computer-Based Learning Environment.

    Science.gov (United States)

    Dennis, Verl E.

    1979-01-01

    Investigates the influence of display rate and viewing field on student-machine interaction in CAI. It was shown that these variables exert an influence upon the student's interaction with a tutorial CAI program and that planners should be aware of this interaction. (RAO)

  8. The Influence of Age-Related Differences in Prior Knowledge and Attentional Refreshing Opportunities on Episodic Memory.

    Science.gov (United States)

    Loaiza, Vanessa M; Rhodes, Matthew G; Anglin, Julia

    2015-09-01

    The assumption that working memory (WM) is embedded within long-term memory suggests that the effectiveness of switching information between activated states in WM (i.e., attentional refreshing) may depend on whether that information is semantically relevant. Given that older adults often have greater general knowledge than younger adults, age-related deficits in episodic memory (EM) could be ameliorated by studying information that has existing semantic representations compared with unknown information. Younger and older adults completed a modified operation span task that varied the number of refreshing opportunities. The memoranda used were equally known to younger and older adults (neutral words; e.g., father), better known to older adults than younger adults (dated words; e.g., mirth), or unknown to both groups (unknown words; e.g., cobot). Results for immediate and delayed recall indicated an age-related improvement for dated memoranda and no age difference for unknown memoranda. Furthermore, refreshing opportunities predicted delayed recall of neutral memoranda more strongly for younger adults than older adults, whereas older adults' recall advantage for dated memoranda was explained by their prior knowledge and not refreshing opportunities. The results suggest that older adults' EM deficits could potentially be ameliorated by incorporating their superior knowledge to supplement relatively ineffective attentional refreshing in WM. © The Author 2013. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  9. Trigonometry refresher

    CERN Document Server

    Klaf, A Albert

    2005-01-01

    Covers the most important aspects of plane and spherical trigonometry. Discusses special problems in navigation, surveying, elasticity, architecture, and various fields of engineering. Includes 1,738 problems, many with solutions. 1946 edition. Features 494 figures.

  10. A Comprehensive Process for Display Systems Development.

    Science.gov (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…

  11. Freshness evaluation of refreshing creams: influence of two types of peppermint oil and emulsion formulation.

    Science.gov (United States)

    Damonte, Silvia Perez; Selem, Claudia; Parente, Maria Emma; Ares, Gastón; Manzoni, Ana Victoria

    2011-01-01

    The aim of the present work was to study the influence of emulsion composition and two types of peppermint oil (common and dementholated) on freshness perception (skin feel) of refreshing creams, as evaluated by trained assessors and two consumer panels. Both common peppermint oil (PO) and dementholated peppermint oil (DPO) were added in a 1% concentration to two base emulsions formulated with high (emulsion A) and low (emulsion B) concentration of apolar components. The samples' freshness was evaluated by a panel of trained assessors and by consumers. Results showed that the freshness sensation was higher when formulation B was considered, which indicates that its low proportion of apolar components might have enhanced peppermint oil liberation and penetration into the skin, increasing freshness perception. On the other hand, no significant differences in freshness intensity after 5 min of application were found between creams formulated containing DPO or PO, suggesting that other components different from menthol might have contributed to the immediate perception of freshness. Results from the present work showed that emulsion formulation has a great effect on freshness perception, suggesting that different formulations should be considered and tested when developing refreshing cosmetics.

  12. Refresher training and continuing education for para-medical ophthalmic assistants

    Directory of Open Access Journals (Sweden)

    Shamanna B

    1999-01-01

    Full Text Available This paper describes a refresher training and continuing education programme in clinical and community ophthalmology for para-medical ophthalmic assistants (PMOAs conducted by the Lions Aravind Institute of Community Ophthalmology. The course participants included 60 PMOAs working either in district hospitals, primary health centres or mobile units from the districts in Maharashtra. Each training programme was spread over 43 hours in 4 days and included lectures, practical demonstrations, and hands-on training in the outpatient, inpatient, and operation theatre of the training institution. Participants were given exposure to outreach activities in an eye camp and a satellite eye centre resembling a district hospital. The PMOAs found the training to be useful and it was seen that areas like patient counselling, instrument and equipment maintenance, and assistance in the operation theatre for newer surgical procedures which were lacking in the basic training were fulfilled in this training programme. Regional Institutes of Ophthalmology, upgraded medical colleges, and other eye-care institutions which have facilities and manpower could organise similar refresher and continuing education programmes for PMOAs so that they could be utilised more efficiently in the blindness-control activities in the country.

  13. Stage Cylindrical Immersive Display

    Science.gov (United States)

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

    2011-01-01

    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

  14. Automated secured cost effective key refreshing technique to enhance WiMAX privacy key management

    Science.gov (United States)

    Sridevi, B.; Sivaranjani, S.; Rajaram, S.

    2013-01-01

    In all walks of life the way of communication is transformed by the rapid growth of wireless communication and its pervasive use. A wireless network which is fixed and richer in bandwidth is specified as IEEE 802.16, promoted and launched by an industrial forum is termed as Worldwide Interoperability for Microwave Access (WiMAX). This technology enables seamless delivery of wireless broadband service for fixed and/or mobile users. The obscurity is the long delay which occurs during the handoff management in every network. Mobile WiMAX employs an authenticated key management protocol as a part of handoff management in which the Base Station (BS) controls the distribution of keying material to the Mobile Station (MS). The protocol employed is Privacy Key Management Version 2- Extensible Authentication Protocol (PKMV2-EAP) which is responsible for the normal and periodical authorization of MSs, reauthorization as well as key refreshing. Authorization key (AK) and Traffic Encryption key (TEK) plays a vital role in key exchange. When the lifetime of key expires, MS has to request for a new key to BS which in turn leads to repetition of authorization, authentication as well as key exchange. To avoid service interruption during reauthorization , two active keys are transmitted at the same time by BS to MS. The consequences of existing work are hefty amount of bandwidth utilization, time consumption and large storage. It is also endured by Man in the Middle attack and Impersonation due to lack of security in key exchange. This paper designs an automatic mutual refreshing of keys to minimize bandwidth utilization, key storage and time consumption by proposing Previous key and Iteration based Key Refreshing Function (PKIBKRF). By integrating PKIBKRF in key generation, the simulation results indicate that 21.8% of the bandwidth and storage of keys are reduced and PKMV2 mutual authentication time is reduced by 66.67%. The proposed work is simulated with Qualnet model and

  15. The neural processing of voluntary completed, real and virtual violent and nonviolent computer game scenarios displaying predefined actions in gamers and nongamers.

    Science.gov (United States)

    Regenbogen, Christina; Herrmann, Manfred; Fehr, Thorsten

    2010-01-01

    Studies investigating the effects of violent computer and video game playing have resulted in heterogeneous outcomes. It has been assumed that there is a decreased ability to differentiate between virtuality and reality in people that play these games intensively. FMRI data of a group of young males with (gamers) and without (controls) a history of long-term violent computer game playing experience were obtained during the presentation of computer game and realistic video sequences. In gamers the processing of real violence in contrast to nonviolence produced activation clusters in right inferior frontal, left lingual and superior temporal brain regions. Virtual violence activated a network comprising bilateral inferior frontal, occipital, postcentral, right middle temporal, and left fusiform regions. Control participants showed extended left frontal, insula and superior frontal activations during the processing of real, and posterior activations during the processing of virtual violent scenarios. The data suggest that the ability to differentiate automatically between real and virtual violence has not been diminished by a long-term history of violent video game play, nor have gamers' neural responses to real violence in particular been subject to desensitization processes. However, analyses of individual data indicated that group-related analyses reflect only a small part of actual individual different neural network involvement, suggesting that the consideration of individual learning history is sufficient for the present discussion.

  16. 78 FR 49420 - Parties Asked To Refresh the Record Regarding Property Records for Rate-of-Return Carriers

    Science.gov (United States)

    2013-08-14

    ... COMMISSION 47 CFR Part 32 Parties Asked To Refresh the Record Regarding Property Records for Rate-of-Return..., 47 CFR 1.415, 1.419, interested parties may file comments and reply comments on or before the dates... the ECFS: http://fjallfoss.fcc.gov/ecfs2/ . Paper Filers: Parties who choose to file by paper must...

  17. Refresh Soveja 2012 - Regenerarea durabilă, o şansă pentru satul românesc

    Directory of Open Access Journals (Sweden)

    Alexandru Matei

    2013-03-01

    Full Text Available REFRESH SOVEJA 2012 is a Sustainable Rural Regeneration Workshop that took place in the summer of 2012. The workshop is a nonprofit intiative based on volunteering. The goal of the project is to initiate a process of regeneration in the Soveja village, to advertise existing local values and draw attention to the opportunities and threats of the area.

  18. 77 FR 11997 - Consumer and Governmental Affairs Bureau Seeks To Refresh the Record Regarding Misuse of Internet...

    Science.gov (United States)

    2012-02-28

    ... Misuse of Internet Protocol Relay Service AGENCY: Federal Communications Commission. ACTION: Proposed... (Bureau) seeks comment to refresh the record regarding misuse of Internet Protocol relay service. Further... intended effect of reducing or eliminating misuse of Internet Protocol Relay. DATES: Submit comments on or...

  19. Improved depth perception with three-dimensional auxiliary display and computer generated three-dimensional panoramic overviews in robot-assisted laparoscopy

    Science.gov (United States)

    Wieringa, Fokko P.; Bouma, Henri; Eendebak, Pieter T.; van Basten, Jean-Paul A.; Beerlage, Harrie P.; Smits, Geert A. H. J.; Bos, Jelte E.

    2014-01-01

    Abstract. In comparison to open surgery, endoscopic surgery offers impaired depth perception and narrower field-of-view. To improve depth perception, the Da Vinci robot offers three-dimensional (3-D) video on the console for the surgeon but not for assistants, although both must collaborate. We improved the shared perception of the whole surgical team by connecting live 3-D monitors to all three available Da Vinci generations, probed user experience after two years by questionnaire, and compared time measurements of a predefined complex interaction task performed with a 3-D monitor versus two-dimensional. Additionally, we investigated whether the complex mental task of reconstructing a 3-D overview from an endoscopic video can be performed by a computer and shared among users. During the study, 925 robot-assisted laparoscopic procedures were performed in three hospitals, including prostatectomies, cystectomies, and nephrectomies. Thirty-one users participated in our questionnaire. Eighty-four percent preferred 3-D monitors and 100% reported spatial-perception improvement. All participating urologists indicated quicker performance of tasks requiring delicate collaboration (e.g., clip placement) when assistants used 3-D monitors. Eighteen users participated in a timing experiment during a delicate cooperation task in vitro. Teamwork was significantly (40%) faster with the 3-D monitor. Computer-generated 3-D reconstructions from recordings offered very wide interactive panoramas with educational value, although the present embodiment is vulnerable to movement artifacts. PMID:26158026

  20. Invisible Display in Aluminum

    DEFF Research Database (Denmark)

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

    2005-01-01

    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...

  1. Handbook of display technology

    CERN Document Server

    Castellano, Joseph A

    1992-01-01

    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

  2. COMPUTING

    CERN Multimedia

    M. Kasemann

    Overview In autumn the main focus was to process and handle CRAFT data and to perform the Summer08 MC production. The operational aspects were well covered by regular Computing Shifts, experts on duty and Computing Run Coordination. At the Computing Resource Board (CRB) in October a model to account for service work at Tier 2s was approved. The computing resources for 2009 were reviewed for presentation at the C-RRB. The quarterly resource monitoring is continuing. Facilities/Infrastructure operations Operations during CRAFT data taking ran fine. This proved to be a very valuable experience for T0 workflows and operations. The transfers of custodial data to most T1s went smoothly. A first round of reprocessing started at the Tier-1 centers end of November; it will take about two weeks. The Computing Shifts procedure was tested full scale during this period and proved to be very efficient: 30 Computing Shifts Persons (CSP) and 10 Computing Resources Coordinators (CRC). The shift program for the shut down w...

  3. Evaluating Approaches to Rendering Braille Text on a High-Density Pin Display.

    Science.gov (United States)

    Morash, Valerie S; Russomanno, Alexander; Gillespie, R Brent; OModhrain, Sile

    2017-10-13

    Refreshable displays for tactile graphics are typically composed of pins that have smaller diameters and spacing than standard braille dots. We investigated configurations of high-density pins to form braille text on such displays using non-refreshable stimuli produced with a 3D printer. Normal dot braille (diameter 1.5 mm) was compared to high-density dot braille (diameter 0.75 mm) wherein each normal dot was rendered by high-density simulated pins alone or in a cluster of pins configured in a diamond, X, or square; and to "blobs" that could result from covering normal braille and high-density multi-pin configurations with a thin membrane. Twelve blind participants read MNREAD sentences displayed in these conditions. For high-density simulated pins, single pins were as quickly and easily read as normal braille, but diamond, X, and square multi-pin configurations were slower and/or harder to read than normal braille. We therefore conclude that as long as center-to-center dot spacing and dot placement is maintained, the dot diameter may be open to variability for rendering braille on a high density tactile display.

  4. Comparison of alphabetical versus categorical display format for medication order entry in a simulated touch screen anesthesia information management system: an experiment in clinician-computer interaction in anesthesia

    Directory of Open Access Journals (Sweden)

    Marian Anil A

    2012-05-01

    Full Text Available Abstract Background Anesthesia information management system (AIMS records should be designed and configured to facilitate the accurate and prompt recording of multiple drugs administered coincidentally or in rapid succession. Methods We proposed two touch-screen display formats for use with our department’s new EPIC touch-screen AIMS. In one format, medication “buttons” were arranged in alphabetical order (i.e. A-C, D-H etc.. In the other, buttons were arranged in categories (Common, Fluids, Cardiovascular, Coagulation etc.. Both formats were modeled on an iPad screen to resemble the AIMS interface. Anesthesia residents, anesthesiologists, and Certified Registered Nurse Anesthetists (n = 60 were then asked to find and touch the correct buttons for a series of medications whose names were displayed to the side of the entry screen. The number of entries made within 2 minutes was recorded. This was done 3 times for each format, with the 1st format chosen randomly. Data were analyzed from the third trials with each format to minimize differences in learning. Results The categorical format had a mean of 5.6 more drugs entered using the categorical method in two minutes than the alphabetical format (95% confidence interval [CI] 4.5 to 6.8, P  Conclusions The use of touch-screen user interfaces in healthcare is increasingly common. Arrangement of drugs names in a categorical display format in the medication order-entry touch screen of an AIMS can result in faster data entry compared to an alphabetical arrangement of drugs. Results of this quality improvement project were used in our department’s design of our final intraoperative electronic anesthesia record. This testing approach using cognitive and usability engineering methods can be used to objectively design and evaluate many aspects of the clinician-computer interaction in electronic health records.

  5. Lunar Sample Display Locations

    Data.gov (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....

  6. COMPUTING

    CERN Multimedia

    M. Kasemann

    Overview During the past three months activities were focused on data operations, testing and re-enforcing shift and operational procedures for data production and transfer, MC production and on user support. Planning of the computing resources in view of the new LHC calendar in ongoing. Two new task forces were created for supporting the integration work: Site Commissioning, which develops tools helping distributed sites to monitor job and data workflows, and Analysis Support, collecting the user experience and feedback during analysis activities and developing tools to increase efficiency. The development plan for DMWM for 2009/2011 was developed at the beginning of the year, based on the requirements from the Physics, Computing and Offline groups (see Offline section). The Computing management meeting at FermiLab on February 19th and 20th was an excellent opportunity discussing the impact and for addressing issues and solutions to the main challenges facing CMS computing. The lack of manpower is particul...

  7. COMPUTING

    CERN Multimedia

    I. Fisk

    2011-01-01

    Introduction CMS distributed computing system performed well during the 2011 start-up. The events in 2011 have more pile-up and are more complex than last year; this results in longer reconstruction times and harder events to simulate. Significant increases in computing capacity were delivered in April for all computing tiers, and the utilisation and load is close to the planning predictions. All computing centre tiers performed their expected functionalities. Heavy-Ion Programme The CMS Heavy-Ion Programme had a very strong showing at the Quark Matter conference. A large number of analyses were shown. The dedicated heavy-ion reconstruction facility at the Vanderbilt Tier-2 is still involved in some commissioning activities, but is available for processing and analysis. Facilities and Infrastructure Operations Facility and Infrastructure operations have been active with operations and several important deployment tasks. Facilities participated in the testing and deployment of WMAgent and WorkQueue+Request...

  8. COMPUTING

    CERN Multimedia

    P. McBride

    The Computing Project is preparing for a busy year where the primary emphasis of the project moves towards steady operations. Following the very successful completion of Computing Software and Analysis challenge, CSA06, last fall, we have reorganized and established four groups in computing area: Commissioning, User Support, Facility/Infrastructure Operations and Data Operations. These groups work closely together with groups from the Offline Project in planning for data processing and operations. Monte Carlo production has continued since CSA06, with about 30M events produced each month to be used for HLT studies and physics validation. Monte Carlo production will continue throughout the year in the preparation of large samples for physics and detector studies ramping to 50 M events/month for CSA07. Commissioning of the full CMS computing system is a major goal for 2007. Site monitoring is an important commissioning component and work is ongoing to devise CMS specific tests to be included in Service Availa...

  9. On-line data display

    Science.gov (United States)

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

    1993-05-01

    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. COMPUTING

    CERN Multimedia

    I. Fisk

    2013-01-01

    Computing activity had ramped down after the completion of the reprocessing of the 2012 data and parked data, but is increasing with new simulation samples for analysis and upgrade studies. Much of the Computing effort is currently involved in activities to improve the computing system in preparation for 2015. Operations Office Since the beginning of 2013, the Computing Operations team successfully re-processed the 2012 data in record time, not only by using opportunistic resources like the San Diego Supercomputer Center which was accessible, to re-process the primary datasets HTMHT and MultiJet in Run2012D much earlier than planned. The Heavy-Ion data-taking period was successfully concluded in February collecting almost 500 T. Figure 3: Number of events per month (data) In LS1, our emphasis is to increase efficiency and flexibility of the infrastructure and operation. Computing Operations is working on separating disk and tape at the Tier-1 sites and the full implementation of the xrootd federation ...

  11. Clinical study on the arthroscopic refreshing treatment of anterior cruciate ligament injury combined with stable medial meniscus ramp injury

    OpenAIRE

    Yang, J.; Guan, K; Wang, J. Z.

    2017-01-01

    This study sought to investigate the clinical efficacy of arthroscopic refreshing treatment of anterior cruciate ligament (ACL) injury combined with stable medial meniscus ramp injury. Sixty-eight patients treated between January 2010 and January 2014 were included, and their clinical data were retrospectively analyzed. All patients, after being treated using ACL reconstruction, were divided into 2 groups according to meniscus injury treatment method. The observation group (31 cases) was trea...

  12. Coca-Cola Refreshments Class 8 Diesel Electric Hybrid Tractor Evaluation: 13-Month Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Walkowicz, K.; Lammert, M.; Curran, P.

    2012-08-01

    This 13-month evaluation used five Kenworth T370 hybrid tractors and five Freightliner M2106 standard diesel tractors at a Coca Cola Refreshments facility in Miami, Florida. The primary objective was to evaluate the fuel economy, emissions, and operational field performance of hybrid electric vehicles when compared to similar-use conventional diesel vehicles. A random dispatch system ensures the vehicles are used in a similar manner. GPS logging, fueling, and maintenance records and laboratory dynamometer testing are used to evaluate the performance of these hybrid tractors. Both groups drive similar duty cycles with similar kinetic intensity (0.95 vs. 0.69), average speed (20.6 vs. 24.3 mph), and stops per mile (1.9 vs. 1.5). The study demonstrated the hybrid group had a 13.7% fuel economy improvement over the diesel group. Laboratory fuel economy and field fuel economy study showed similar trends along the range of KI and stops per mile. Hybrid maintenance costs were 51% lower per mile; hybrid fuel costs per mile were 12% less than for the diesels; and hybrid vehicle total cost of operation per mile was 24% less than the cost of operation for the diesel group.

  13. Repercusión del trabajo con pantallas de visualización de datos en la salud de los obreros Impact of visual display in computer use on the occupational health

    Directory of Open Access Journals (Sweden)

    Lourdes M. Moreno Pérez

    2007-12-01

    Full Text Available Las pantallas de visualización de datos son unidades periféricas de salida que permiten la visualización de la información, el personal humano las utiliza de diferentes maneras. Con el objetivo de determinar existencia de alteraciones de salud se realizó un estudio a 52 operadores de pantallas que laboran de forma continua con estos equipos. Se encontró que la mayor incidencia de trastornos referidos por los obreros fueron los oculares (48,07 %; la cefalea (con 25 %, y la ansiedad (19,23 %. Se investigó, además, las condiciones ergonómicas de sus centros laborales, y se detectaron deficiencias en 100 % de los obreros estudiados; el exceso de ruido fue la condición más negativa reportada.Computer displays are peripheral output units that allow visualizing data and the human resources use them in different ways. With the objective of finding out health problems related to this issue, 52 computer operators, who work permanently with these pieces of equipment, were studied. It was found that the greates incidental problems were occular disorders (48.07 %, headache (25 % and anxiety (19.23 %. Besides, the ergonomic conditons in their workplaces were also studied and the results showed deficiencies in 100 % of them. Excessive noise was the most negative reported condition.

  14. Programmer's Reference Manual for Dynamic Display Software System

    Science.gov (United States)

    1971-01-01

    In 1968, the display sysems group of the Systems Laboratory of the NASA/Electronics Research Center undertook a research task in the area of computer controlled flight information systems for aerospace application. The display laboratory of the Trans...

  15. COMPUTING

    CERN Multimedia

    I. Fisk

    2010-01-01

    Introduction It has been a very active quarter in Computing with interesting progress in all areas. The activity level at the computing facilities, driven by both organised processing from data operations and user analysis, has been steadily increasing. The large-scale production of simulated events that has been progressing throughout the fall is wrapping-up and reprocessing with pile-up will continue. A large reprocessing of all the proton-proton data has just been released and another will follow shortly. The number of analysis jobs by users each day, that was already hitting the computing model expectations at the time of ICHEP, is now 33% higher. We are expecting a busy holiday break to ensure samples are ready in time for the winter conferences. Heavy Ion An activity that is still in progress is computing for the heavy-ion program. The heavy-ion events are collected without zero suppression, so the event size is much large at roughly 11 MB per event of RAW. The central collisions are more complex and...

  16. COMPUTING

    CERN Multimedia

    M. Kasemann P. McBride Edited by M-C. Sawley with contributions from: P. Kreuzer D. Bonacorsi S. Belforte F. Wuerthwein L. Bauerdick K. Lassila-Perini M-C. Sawley

    Introduction More than seventy CMS collaborators attended the Computing and Offline Workshop in San Diego, California, April 20-24th to discuss the state of readiness of software and computing for collisions. Focus and priority were given to preparations for data taking and providing room for ample dialog between groups involved in Commissioning, Data Operations, Analysis and MC Production. Throughout the workshop, aspects of software, operating procedures and issues addressing all parts of the computing model were discussed. Plans for the CMS participation in STEP’09, the combined scale testing for all four experiments due in June 2009, were refined. The article in CMS Times by Frank Wuerthwein gave a good recap of the highly collaborative atmosphere of the workshop. Many thanks to UCSD and to the organizers for taking care of this workshop, which resulted in a long list of action items and was definitely a success. A considerable amount of effort and care is invested in the estimate of the comput...

  17. Display Sharing: An Alternative Paradigm

    Science.gov (United States)

    Brown, Michael A.

    2010-01-01

    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.

  18. 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.

  19. COMPUTING

    CERN Multimedia

    P. McBride

    It has been a very active year for the computing project with strong contributions from members of the global community. The project has focused on site preparation and Monte Carlo production. The operations group has begun processing data from P5 as part of the global data commissioning. Improvements in transfer rates and site availability have been seen as computing sites across the globe prepare for large scale production and analysis as part of CSA07. Preparations for the upcoming Computing Software and Analysis Challenge CSA07 are progressing. Ian Fisk and Neil Geddes have been appointed as coordinators for the challenge. CSA07 will include production tests of the Tier-0 production system, reprocessing at the Tier-1 sites and Monte Carlo production at the Tier-2 sites. At the same time there will be a large analysis exercise at the Tier-2 centres. Pre-production simulation of the Monte Carlo events for the challenge is beginning. Scale tests of the Tier-0 will begin in mid-July and the challenge it...

  20. COMPUTING

    CERN Multimedia

    I. Fisk

    2012-01-01

    Introduction Computing continued with a high level of activity over the winter in preparation for conferences and the start of the 2012 run. 2012 brings new challenges with a new energy, more complex events, and the need to make the best use of the available time before the Long Shutdown. We expect to be resource constrained on all tiers of the computing system in 2012 and are working to ensure the high-priority goals of CMS are not impacted. Heavy ions After a successful 2011 heavy-ion run, the programme is moving to analysis. During the run, the CAF resources were well used for prompt analysis. Since then in 2012 on average 200 job slots have been used continuously at Vanderbilt for analysis workflows. Operations Office As of 2012, the Computing Project emphasis has moved from commissioning to operation of the various systems. This is reflected in the new organisation structure where the Facilities and Data Operations tasks have been merged into a common Operations Office, which now covers everything ...

  1. COMPUTING

    CERN Multimedia

    I. Fisk

    2011-01-01

    Introduction It has been a very active quarter in Computing with interesting progress in all areas. The activity level at the computing facilities, driven by both organised processing from data operations and user analysis, has been steadily increasing. The large-scale production of simulated events that has been progressing throughout the fall is wrapping-up and reprocessing with pile-up will continue. A large reprocessing of all the proton-proton data has just been released and another will follow shortly. The number of analysis jobs by users each day, that was already hitting the computing model expectations at the time of ICHEP, is now 33% higher. We are expecting a busy holiday break to ensure samples are ready in time for the winter conferences. Heavy Ion The Tier 0 infrastructure was able to repack and promptly reconstruct heavy-ion collision data. Two copies were made of the data at CERN using a large CASTOR disk pool, and the core physics sample was replicated ...

  2. COMPUTING

    CERN Multimedia

    M. Kasemann

    Introduction More than seventy CMS collaborators attended the Computing and Offline Workshop in San Diego, California, April 20-24th to discuss the state of readiness of software and computing for collisions. Focus and priority were given to preparations for data taking and providing room for ample dialog between groups involved in Commissioning, Data Operations, Analysis and MC Production. Throughout the workshop, aspects of software, operating procedures and issues addressing all parts of the computing model were discussed. Plans for the CMS participation in STEP’09, the combined scale testing for all four experiments due in June 2009, were refined. The article in CMS Times by Frank Wuerthwein gave a good recap of the highly collaborative atmosphere of the workshop. Many thanks to UCSD and to the organizers for taking care of this workshop, which resulted in a long list of action items and was definitely a success. A considerable amount of effort and care is invested in the estimate of the co...

  3. COMPUTING

    CERN Multimedia

    M. Kasemann

    CCRC’08 challenges and CSA08 During the February campaign of the Common Computing readiness challenges (CCRC’08), the CMS computing team had achieved very good results. The link between the detector site and the Tier0 was tested by gradually increasing the number of parallel transfer streams well beyond the target. Tests covered the global robustness at the Tier0, processing a massive number of very large files and with a high writing speed to tapes.  Other tests covered the links between the different Tiers of the distributed infrastructure and the pre-staging and reprocessing capacity of the Tier1’s: response time, data transfer rate and success rate for Tape to Buffer staging of files kept exclusively on Tape were measured. In all cases, coordination with the sites was efficient and no serious problem was found. These successful preparations prepared the ground for the second phase of the CCRC’08 campaign, in May. The Computing Software and Analysis challen...

  4. COMPUTING

    CERN Multimedia

    I. Fisk

    2010-01-01

    Introduction The first data taking period of November produced a first scientific paper, and this is a very satisfactory step for Computing. It also gave the invaluable opportunity to learn and debrief from this first, intense period, and make the necessary adaptations. The alarm procedures between different groups (DAQ, Physics, T0 processing, Alignment/calibration, T1 and T2 communications) have been reinforced. A major effort has also been invested into remodeling and optimizing operator tasks in all activities in Computing, in parallel with the recruitment of new Cat A operators. The teams are being completed and by mid year the new tasks will have been assigned. CRB (Computing Resource Board) The Board met twice since last CMS week. In December it reviewed the experience of the November data-taking period and could measure the positive improvements made for the site readiness. It also reviewed the policy under which Tier-2 are associated with Physics Groups. Such associations are decided twice per ye...

  5. COMPUTING

    CERN Multimedia

    M. Kasemann

    Introduction During the past six months, Computing participated in the STEP09 exercise, had a major involvement in the October exercise and has been working with CMS sites on improving open issues relevant for data taking. At the same time operations for MC production, real data reconstruction and re-reconstructions and data transfers at large scales were performed. STEP09 was successfully conducted in June as a joint exercise with ATLAS and the other experiments. It gave good indication about the readiness of the WLCG infrastructure with the two major LHC experiments stressing the reading, writing and processing of physics data. The October Exercise, in contrast, was conducted as an all-CMS exercise, where Physics, Computing and Offline worked on a common plan to exercise all steps to efficiently access and analyze data. As one of the major results, the CMS Tier-2s demonstrated to be fully capable for performing data analysis. In recent weeks, efforts were devoted to CMS Computing readiness. All th...

  6. Scalable Resolution Display Walls

    KAUST Repository

    Leigh, Jason

    2013-01-01

    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.

  7. OLED displays and lighting

    CERN Document Server

    Koden, Mitsuhiro

    2017-01-01

    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.

  8. Three-dimensional Imaging, Visualization, and Display

    CERN Document Server

    Javidi, Bahram; Son, Jung-Young

    2009-01-01

    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...

  9. JAVA Stereo Display Toolkit

    Science.gov (United States)

    Edmonds, Karina

    2008-01-01

    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.

  10. Comparison of alphabetical versus categorical display format for medication order entry in a simulated touch screen anesthesia information management system: an experiment in clinician-computer interaction in anesthesia.

    Science.gov (United States)

    Marian, Anil A; Dexter, Franklin; Tucker, Peter; Todd, Michael M

    2012-05-29

    Anesthesia information management system (AIMS) records should be designed and configured to facilitate the accurate and prompt recording of multiple drugs administered coincidentally or in rapid succession. We proposed two touch-screen display formats for use with our department's new EPIC touch-screen AIMS. In one format, medication "buttons" were arranged in alphabetical order (i.e. A-C, D-H etc.). In the other, buttons were arranged in categories (Common, Fluids, Cardiovascular, Coagulation etc.). Both formats were modeled on an iPad screen to resemble the AIMS interface. Anesthesia residents, anesthesiologists, and Certified Registered Nurse Anesthetists (n = 60) were then asked to find and touch the correct buttons for a series of medications whose names were displayed to the side of the entry screen. The number of entries made within 2 minutes was recorded. This was done 3 times for each format, with the 1st format chosen randomly. Data were analyzed from the third trials with each format to minimize differences in learning. The categorical format had a mean of 5.6 more drugs entered using the categorical method in two minutes than the alphabetical format (95% confidence interval [CI] 4.5 to 6.8, P < 0.0001). The findings were the same regardless of the order of testing (i.e. alphabetical-categorical vs. categorical - alphabetical) and participants' years of clinical experience. Most anesthesia providers made no (0) errors for most trials (N = 96/120 trials, lower 95% limit 73%, P < 0.0001). There was no difference in error rates between the two formats (P = 0.53). The use of touch-screen user interfaces in healthcare is increasingly common. Arrangement of drugs names in a categorical display format in the medication order-entry touch screen of an AIMS can result in faster data entry compared to an alphabetical arrangement of drugs. Results of this quality improvement project were used in our department's design of our final intraoperative electronic

  11. Helmet-Mounted Displays (HMD)

    Data.gov (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...

  12. Jet printing flexible displays

    OpenAIRE

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

    2006-01-01

    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.

  13. Standardizing visual display quality

    NARCIS (Netherlands)

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

    1998-01-01

    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

  14. COMPUTING

    CERN Multimedia

    I. Fisk

    2013-01-01

    Computing operation has been lower as the Run 1 samples are completing and smaller samples for upgrades and preparations are ramping up. Much of the computing activity is focusing on preparations for Run 2 and improvements in data access and flexibility of using resources. Operations Office Data processing was slow in the second half of 2013 with only the legacy re-reconstruction pass of 2011 data being processed at the sites.   Figure 1: MC production and processing was more in demand with a peak of over 750 Million GEN-SIM events in a single month.   Figure 2: The transfer system worked reliably and efficiently and transferred on average close to 520 TB per week with peaks at close to 1.2 PB.   Figure 3: The volume of data moved between CMS sites in the last six months   The tape utilisation was a focus for the operation teams with frequent deletion campaigns from deprecated 7 TeV MC GEN-SIM samples to INVALID datasets, which could be cleaned up...

  15. COMPUTING

    CERN Multimedia

    I. Fisk

    2012-01-01

      Introduction Computing activity has been running at a sustained, high rate as we collect data at high luminosity, process simulation, and begin to process the parked data. The system is functional, though a number of improvements are planned during LS1. Many of the changes will impact users, we hope only in positive ways. We are trying to improve the distributed analysis tools as well as the ability to access more data samples more transparently.  Operations Office Figure 2: Number of events per month, for 2012 Since the June CMS Week, Computing Operations teams successfully completed data re-reconstruction passes and finished the CMSSW_53X MC campaign with over three billion events available in AOD format. Recorded data was successfully processed in parallel, exceeding 1.2 billion raw physics events per month for the first time in October 2012 due to the increase in data-parking rate. In parallel, large efforts were dedicated to WMAgent development and integrati...

  16. COMPUTING

    CERN Multimedia

    2010-01-01

    Introduction Just two months after the “LHC First Physics” event of 30th March, the analysis of the O(200) million 7 TeV collision events in CMS accumulated during the first 60 days is well under way. The consistency of the CMS computing model has been confirmed during these first weeks of data taking. This model is based on a hierarchy of use-cases deployed between the different tiers and, in particular, the distribution of RECO data to T1s, who then serve data on request to T2s, along a topology known as “fat tree”. Indeed, during this period this model was further extended by almost full “mesh” commissioning, meaning that RECO data were shipped to T2s whenever possible, enabling additional physics analyses compared with the “fat tree” model. Computing activities at the CMS Analysis Facility (CAF) have been marked by a good time response for a load almost evenly shared between ALCA (Alignment and Calibration tasks - highest p...

  17. COMPUTING

    CERN Multimedia

    Matthias Kasemann

    Overview The main focus during the summer was to handle data coming from the detector and to perform Monte Carlo production. The lessons learned during the CCRC and CSA08 challenges in May were addressed by dedicated PADA campaigns lead by the Integration team. Big improvements were achieved in the stability and reliability of the CMS Tier1 and Tier2 centres by regular and systematic follow-up of faults and errors with the help of the Savannah bug tracking system. In preparation for data taking the roles of a Computing Run Coordinator and regular computing shifts monitoring the services and infrastructure as well as interfacing to the data operations tasks are being defined. The shift plan until the end of 2008 is being put together. User support worked on documentation and organized several training sessions. The ECoM task force delivered the report on “Use Cases for Start-up of pp Data-Taking” with recommendations and a set of tests to be performed for trigger rates much higher than the ...

  18. COMPUTING

    CERN Multimedia

    M. Kasemann

    Introduction A large fraction of the effort was focused during the last period into the preparation and monitoring of the February tests of Common VO Computing Readiness Challenge 08. CCRC08 is being run by the WLCG collaboration in two phases, between the centres and all experiments. The February test is dedicated to functionality tests, while the May challenge will consist of running at all centres and with full workflows. For this first period, a number of functionality checks of the computing power, data repositories and archives as well as network links are planned. This will help assess the reliability of the systems under a variety of loads, and identifying possible bottlenecks. Many tests are scheduled together with other VOs, allowing the full scale stress test. The data rates (writing, accessing and transfer¬ring) are being checked under a variety of loads and operating conditions, as well as the reliability and transfer rates of the links between Tier-0 and Tier-1s. In addition, the capa...

  19. COMPUTING

    CERN Multimedia

    Contributions from I. Fisk

    2012-01-01

    Introduction The start of the 2012 run has been busy for Computing. We have reconstructed, archived, and served a larger sample of new data than in 2011, and we are in the process of producing an even larger new sample of simulations at 8 TeV. The running conditions and system performance are largely what was anticipated in the plan, thanks to the hard work and preparation of many people. Heavy ions Heavy Ions has been actively analysing data and preparing for conferences.  Operations Office Figure 6: Transfers from all sites in the last 90 days For ICHEP and the Upgrade efforts, we needed to produce and process record amounts of MC samples while supporting the very successful data-taking. This was a large burden, especially on the team members. Nevertheless the last three months were very successful and the total output was phenomenal, thanks to our dedicated site admins who keep the sites operational and the computing project members who spend countless hours nursing the...

  20. COMPUTING

    CERN Multimedia

    P. MacBride

    The Computing Software and Analysis Challenge CSA07 has been the main focus of the Computing Project for the past few months. Activities began over the summer with the preparation of the Monte Carlo data sets for the challenge and tests of the new production system at the Tier-0 at CERN. The pre-challenge Monte Carlo production was done in several steps: physics generation, detector simulation, digitization, conversion to RAW format and the samples were run through the High Level Trigger (HLT). The data was then merged into three "Soups": Chowder (ALPGEN), Stew (Filtered Pythia) and Gumbo (Pythia). The challenge officially started when the first Chowder events were reconstructed on the Tier-0 on October 3rd. The data operations teams were very busy during the the challenge period. The MC production teams continued with signal production and processing while the Tier-0 and Tier-1 teams worked on splitting the Soups into Primary Data Sets (PDS), reconstruction and skimming. The storage sys...

  1. Visual merchandising window display

    Directory of Open Access Journals (Sweden)

    Opris (Cas. Stanila M.

    2013-12-01

    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.

  2. COMPUTING

    CERN Multimedia

    I. Fisk

    2011-01-01

    Introduction The Computing Team successfully completed the storage, initial processing, and distribution for analysis of proton-proton data in 2011. There are still a variety of activities ongoing to support winter conference activities and preparations for 2012. Heavy ions The heavy-ion run for 2011 started in early November and has already demonstrated good machine performance and success of some of the more advanced workflows planned for 2011. Data collection will continue until early December. Facilities and Infrastructure Operations Operational and deployment support for WMAgent and WorkQueue+Request Manager components, routinely used in production by Data Operations, are provided. The GlideInWMS and components installation are now deployed at CERN, which is added to the GlideInWMS factory placed in the US. There has been new operational collaboration between the CERN team and the UCSD GlideIn factory operators, covering each others time zones by monitoring/debugging pilot jobs sent from the facto...

  3. Diagnostic performance of detecting breast cancer on computed radiographic (CR) mammograms: comparison of hard copy film, 3-megapixel liquid-crystal-display (LCD) monitor and 5-megapixel LCD monitor.

    Science.gov (United States)

    Yamada, Takayuki; Suzuki, Akihiko; Uchiyama, Nachiko; Ohuchi, Noriaki; Takahashi, Shoki

    2008-11-01

    The purpose was to compare observer performance in the detection of breast cancer using hard-copy film, and 3-megapixel (3-MP) and 5-megapixel (5-MP) liquid crystal display (LCD) monitors in a simulated screening setting. We amassed 100 sample sets, including 32 patients with surgically proven breast cancer (masses present, N = 12; microcalcifications, N = 10; other types, N = 10) and 68 normal controls. All the mammograms were obtained using computed radiography (CR; sampling pitch of 50 mum). Twelve mammographers independently assessed CR mammograms presented in random order for hard-copy and soft-copy reading at minimal 4-week intervals. Observers rated the images on seven-point (1 to 7) and continuous (0 to 100) malignancy scales. Receiver-operating-characteristics analysis was performed, and the average area under the curve (AUC) was calculated for each modality. The jackknife method with the Bonferroni correction was applied to multireader/multicase analysis. The average AUC values for the 3-MP LCD, 5-MP LCD, and hard-copy film were 0.954, 0.947, and 0.956 on the seven-point scale and 0.943, 0.923, and 0.944 on the continuous scale, respectively. There were no significant differences among the three modalities on either scale. Soft-copy reading using 3-MP and 5-MP LCDs is comparable to hard-copy reading for detecting breast cancer.

  4. Microlaser-based displays

    Science.gov (United States)

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

    1997-07-01

    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.

  5. Color Display Design Guide

    Science.gov (United States)

    1978-10-01

    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

  6. 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...

  7. Compressive multi-mode superresolution display

    KAUST Repository

    Heide, Felix

    2014-01-01

    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.

  8. Clinical study on the arthroscopic refreshing treatment of anterior cruciate ligament injury combined with stable medial meniscus ramp injury.

    Science.gov (United States)

    Yang, J; Guan, K; Wang, J Z

    2017-06-01

    This study sought to investigate the clinical efficacy of arthroscopic refreshing treatment of anterior cruciate ligament (ACL) injury combined with stable medial meniscus ramp injury. Sixty-eight patients treated between January 2010 and January 2014 were included, and their clinical data were retrospectively analyzed. All patients, after being treated using ACL reconstruction, were divided into 2 groups according to meniscus injury treatment method. The observation group (31 cases) was treated by arthroscopic refreshing, which removed the tissue on both sides of the tear edge using a cutting knife, while the control group (37 cases) was treated using Fast-fix sutures. All patients were followed up for at least 24 months. Surgical duration, postoperative function recovery time, and hospital stay for patients in the observation group were significantly shorter than for those of the control group (P⟨0.05). Both groups showed significant post-operative improvement for Lysholm scores, IKDC scores, and average knee range of motion at 12 and 24 months post-operation (P⟨0.05), but no significant differences between groups were observed (P⟩0.05). Regarding the difference in movement range between the healthy and injured sides, both groups showed significant decrease post-operation (P⟨0.05). Ultimately, there was no significant difference in the recovery of ramp damage and objective symptoms between the two groups (P⟩0.05). Arthroscopic refreshing treatment of patients with anterior cruciate ligament injury combined with stable ramp lesion can achieve similar clinical curative effects as the Fast-fix suture, thereby providing a simple alternative for patient treatment worth popularizing.

  9. OPTIMASI OLSR ROUTING PROTOCOL PADA JARINGAN WIRELESS MESH DENGAN ADAPTIVE REFRESHING TIME INTERVAL DAN ENHANCE MULTI POINT RELAY SELECTING ALGORITHM

    Directory of Open Access Journals (Sweden)

    Faosan Mapa

    2014-01-01

    Full Text Available Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Wireless Mesh Network (WMN adalah suatu konektivitas jaringan yang self-organized, self-configured dan multi-hop. Tujuan dari WMN adalah menawarkan pengguna suatu bentuk jaringan nirkabel yang dapat dengan mudah berkomunikasi dengan jaringan konvensional dengan kecepatan tinggi dan dengan cakupan yang lebih luas serta biaya awal yang minimal. Diperlukan suatu desain protokol routing yang efisien untuk WMN yang secara adaptif dapat mendukung mesh routers dan mesh clients. Dalam tulisan ini, diusulkan untuk mengoptimalkan protokol OLSR, yang merupakan protokol routing proaktif. Digunakan heuristik yang meningkatkan protokol OLSR melalui adaptive refreshing time interval dan memperbaiki metode MPR selecting algorithm. Suatu analisa dalam meningkatkan protokol OLSR melalui adaptive refreshing time interval dan memperbaiki algoritma pemilihan MPR menunjukkan kinerja yang signifikan dalam hal throughput jika dibandingkan dengan protokol OLSR yang asli. Akan tetapi, terdapat kenaikan dalam hal delay. Pada simulasi yang dilakukan dapat disimpulkan bahwa OLSR dapat dioptimalkan dengan memodifikasi pemilihan node MPR berdasarkan cost effective dan penyesuaian waktu interval refreshing hello message sesuai dengan keadaan

  10. COMPUTING

    CERN Multimedia

    M. Kasemann

    CMS relies on a well functioning, distributed computing infrastructure. The Site Availability Monitoring (SAM) and the Job Robot submission have been very instrumental for site commissioning in order to increase availability of more sites such that they are available to participate in CSA07 and are ready to be used for analysis. The commissioning process has been further developed, including "lessons learned" documentation via the CMS twiki. Recently the visualization, presentation and summarizing of SAM tests for sites has been redesigned, it is now developed by the central ARDA project of WLCG. Work to test the new gLite Workload Management System was performed; a 4 times increase in throughput with respect to LCG Resource Broker is observed. CMS has designed and launched a new-generation traffic load generator called "LoadTest" to commission and to keep exercised all data transfer routes in the CMS PhE-DEx topology. Since mid-February, a transfer volume of about 12 P...

  11. Map display design

    Science.gov (United States)

    Aretz, Anthony J.

    1990-01-01

    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.

  12. ENERGY STAR Certified Displays

    Data.gov (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....

  13. Advanced aerosense display interfaces

    Science.gov (United States)

    Hopper, Darrel G.; Meyer, Frederick M.

    1998-09-01

    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.

  14. Influence of refreshment/activation cycles and temperature rise on the reaction rate of sodium hypochlorite with bovine dentine during ultrasonic activated irrigation.

    Science.gov (United States)

    Macedo, R G; Verhaagen, B; Wesselink, P R; Versluis, M; van der Sluis, L W M

    2014-02-01

    To evaluate the effect of multiple refreshment/activation cycles and temperature on the reaction rate of sodium hypochlorite (NaOCl) with bovine dentine during ultrasonic activated irrigation (UAI) under laboratory conditions. The root canal walls of 24 standardized root canals in bovine incisors were exposed to a standardized volume of NaOCl at different temperatures (24 °C and 38 °C) and exposure times (20, 60 and 180 s). The irrigant was refreshed and ultrasonically activated four times for 20 s followed by a 40 s rest interval, with no refreshment and no activation as the controls. The reaction rate was determined by measuring the amount of active chlorine in the NaOCl solution before and after being exposed to dentine during the specific experimental conditions. Calorimetry was used to measure the electrical-to-sonochemical conversion efficiency during ultrasonic activation. Refreshment, activation and exposure time all increased the reaction rate of NaOCl (P reaction rate of NaOCl (P > 0.125). The reaction rate of NaOCl with dentine is enhanced by refreshment, ultrasonic activation and exposure time. Temperature rise of irrigant during ultrasonic activation was not sufficient to alter the reaction rate. © 2013 International Endodontic Journal. Published by John Wiley & Sons Ltd.

  15. Effect of a clinical skills refresher course on the clinical performance, anxiety and self-efficacy of the final year undergraduate nursing students.

    Science.gov (United States)

    Shahsavari, Hooman; Ghiyasvandian, Shahrzad; Houser, Marian L; Zakerimoghadam, Masoumeh; Kermanshahi, Seyedeh Sosan Nouri; Torabi, Sedigheh

    2017-11-01

    Although the final year of nursing undergraduate programs that focus on clinical education are planned to prepare nursing students to better transition to the real world of health care service; evidence has shown that this program is not sufficient to reach this end goal. This controlled trial study was to investigate the effectiveness of a basic clinical skills refresher course for nursing students before entering the internship program. The sample consisted of 160 undergraduate nursing students assigned into two groups. The intervention was a three-day refresher course directed by nurse instructors for intervention group focused on 10 basic nursing procedures in the clinical skill lab. The control group did not receive any intervention. The students' anxiety, clinical self- efficacy and clinical skills practice were measured before and after intervention in both groups. The results indicated that the students who took part in the refresher course experienced lower anxiety levels, higher levels of clinical self-efficacy, and have better clinical skills during their internships. The undergraduate nursing curriculum can be strengthened by the basic clinical skills refresher course. This refresher course can bridge the theory - practice gap and provide a better transition from the student to nurse role. Copyright © 2017 Elsevier Ltd. All rights reserved.

  16. Liquid Crystal Airborne Display

    Science.gov (United States)

    1977-08-01

    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

  17. Military display performance parameters

    Science.gov (United States)

    Desjardins, Daniel D.; Meyer, Frederick

    2012-06-01

    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.

  18. ORFeome Phage Display.

    Science.gov (United States)

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

    2018-01-01

    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.

  19. A Human Factors Framework for Payload Display Design

    Science.gov (United States)

    Dunn, Mariea C.; Hutchinson, Sonya L.

    1998-01-01

    During missions to space, one charge of the astronaut crew is to conduct research experiments. These experiments, referred to as payloads, typically are controlled by computers. Crewmembers interact with payload computers by using visual interfaces or displays. To enhance the safety, productivity, and efficiency of crewmember interaction with payload displays, particular attention must be paid to the usability of these displays. Enhancing display usability requires adoption of a design process that incorporates human factors engineering principles at each stage. This paper presents a proposed framework for incorporating human factors engineering principles into the payload display design process.

  20. Digital Display Integration Project Project Online 2.0

    CERN Document Server

    Bardsley, J N

    1999-01-01

    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...

  1. Information rich display design

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-07-01

    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

  2. Dynamic plasmonic colour display

    Science.gov (United States)

    Duan, Xiaoyang; Kamin, Simon; Liu, Na

    2017-01-01

    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

  3. Stereo Painting Display Devices

    Science.gov (United States)

    Shafer, David

    1982-06-01

    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.

  4. Digital display monitor performance in general dental practice.

    Science.gov (United States)

    Butt, A; Savage, N W

    2015-06-01

    The performance of computer displays represents an important factor influencing the quality of digital radiographs. The aim of this study was to evaluate the performance of computer displays used for the purposes of diagnostic radiology in a sample of dental practices in one Australian state. Twelve dental practices comprising 29 displays elected to participate in a detailed performance evaluation of their computer displays according to the AAPM TG18 and DICOM part 14 GSDF standards. None of the 29 displays tested passed the primary or secondary acceptance criteria developed by the AAPM TG18. The greatest contributor to display failure, both prior to and following calibration, were specular and diffuse reflection. When the parameter of display reflection was ignored, the most frequent parameters contributing to display failure following calibration included the primary grade acceptance criteria of noise (n = 29, 100%), contrast ratio (n = 9, 31%) and maximum luminance (n = 12, 41%). However, display calibration resulted in a significant improvement in the parameter of contrast response. This study demonstrated significant problems concerning the performance of display monitors in the population surveyed. In recognition of the growing utilization of digital imaging in dentistry the importance of the computer display should be considered. © 2015 Australian Dental Association.

  5. Simplified Night Sky Display System

    Science.gov (United States)

    Castellano, Timothy P.

    2010-01-01

    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.

  6. Modular sub-wavelength diffractive light modulator for high-definition holographic displays

    Science.gov (United States)

    Stahl, Richard; Rochus, Veronique; Rottenberg, Xavier; Cosemans, Stefan; Haspeslagh, Luc; Severi, Simone; Van der Plas, Geert; Lafruit, Gauthier; Donnay, Stephane

    2013-02-01

    Holography is undoubtedly the ultimate 3D visualization technology, offering true 3D experience with all the natural depth cues, without the undesirable side-effects of current stereoscopic systems (uncomfortable glasses, strained eyes, fatiguing experience). Realization of a high-definition holographic display however requires a number of breakthroughs from existing prototypes. One of the main challenges lies in technology scaling, as holography is based on light diffraction and interference - to achieve wide viewing angles, the light-modulating pixels need to be spaced close to or below the wavelength of the used visible light. Furthermore, achieving high 3D image quality, hundreds of millions of such individually programmable pixels are needed. As a solution, we develop a modular sub-wavelength light modulator, consisting of three main sub-systems: the optical sub-system, comprising a 2D array of sub-wavelength pixels; the driver sub-system for individual pixel control, and the holographic computational engine. Based on conclusions from our state-of-the art studies, numerous experiments and holographic demonstrators, we have focused on reflective phase-modulating MEMS-based system and its scaling beyond 500nm pitch. We have devised a unique binary-programmable phase-modulating pixel architecture realizing vertical pixel displacement of up to 150nm at 500nm by 500nm pixel pitch, while sustaining low operating voltages compatible with CMOS driver circuitry. IMEC SiGe MEMS technology enables integration of the CMOS pixel-line drivers, scan-line drivers and I/O circuits underneath the 2D MEMS array, resulting in a compact and modular single-chip system design. Refresh rates of few hundred frames per second are achieved using our patented segmented driver-array architecture. Integrated circuits implementing parallel holographic computational engines can be added to the module using advanced 3D stacking technology. Herein we further report on our progress in realizing

  7. A Conceptual Framework for Ambient Learning Displays

    OpenAIRE

    Börner, Dirk; Kalz, Marco; Specht, Marcus

    2010-01-01

    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.

  8. A Conceptual Framework for Ambient Learning Displays

    NARCIS (Netherlands)

    Börner, Dirk; Kalz, Marco; Specht, Marcus

    2010-01-01

    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.

  9. A Conceptual Framework for Ambient Learning Displays

    NARCIS (Netherlands)

    Börner, Dirk; Kalz, Marco; Specht, Marcus

    2011-01-01

    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:

  10. Influence of wet activation of used inorganic binder on cyclically refreshed water glass moulding sands hardened by microwaves

    Directory of Open Access Journals (Sweden)

    Mateusz Stachowicz

    2016-11-01

    Full Text Available The paper presents the research results of using an innovative method to reclaim the waste moulding sands containing water glass. Two of the examined processes are connected with "dry" or "wet" activation of inorganic binder in waste moulding sand mixtures physically hardened by microwave radiation. The sand mixtures consisting of high-silica sand and water-glass with average molar module 2.5, were subjected to the following cyclical process: mixing the components, compacting, microwave heating, cooling-down, thermally loading the mould to 800 °C, cooling-down to ambient temperature, and knocking-out. After being knocked-out, the waste moulding sands were subjected to either dry or wet activation of the binder. To activate thermally treated inorganic binder, each of the examined processes employed the surface phenomenon usually associated to mechanical reclamation. The study also covered possible use of some elements of wet reclamation to rehydrate waste binder. To evaluate the effectiveness of the two proposed methods of waste binder activation, selected strength and technological parameters were measured. After each subsequent processing cycle, the permeability, tensile strength and bending strength were determined. In addition, the surface of activated sand grains was examined with a scanning electron microscope. Analysis of the results indicates that it is possible to re-activate the used binder such as sodium silicate, and to stabilize the strength parameters in both activation processes. Permeability of the refreshed moulding sands strongly depends on the surface condition of high-silica grains. The wet activation process by wetting and buffering knocked-out moulding sands in closed humid environment makes it possible to reduce the content of refreshing additive in water-glass. The moulding sands cyclically prepared in both processes do not require the addition of fresh high-silica sand. The relatively high quality achieved in the

  11. Looking At Display Technologies

    Science.gov (United States)

    Bull, Glen; Bull, Gina

    2005-01-01

    A projection system in a classroom with an Internet connection provides a window on the world. Until recently, projectors were expensive and difficult to maintain. Technological advances have resulted in solid-state projectors that require little maintenance and cost no more than a computer. Adding a second or third computer to a classroom…

  12. Computational Deception

    NARCIS (Netherlands)

    Nijholt, Antinus; Acosta, P.S.; Cravo, P.

    2010-01-01

    In the future our daily life interactions with other people, with computers, robots and smart environments will be recorded and interpreted by computers or embedded intelligence in environments, furniture, robots, displays, and wearables. These sensors record our activities, our behaviour, and our

  13. Minimalism context-aware displays.

    Science.gov (United States)

    Cai, Yang

    2004-12-01

    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.

  14. Refrigerated display cabinets; Butikskyla

    Energy Technology Data Exchange (ETDEWEB)

    Fahlen, Per

    2000-07-01

    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.

  15. Tactical Video Display.

    Science.gov (United States)

    1981-02-01

    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

  16. Influence of refreshment/activation cycles and temperature rise on the reaction rate of sodium hypochlorite with bovine dentine during ultrasonic activated irrigation

    NARCIS (Netherlands)

    Macedo, R.G.; Verhaagen, B.; Wesselink, P.R.; Versluis, Michel; van der Sluis, L.W.M.

    2014-01-01

    Aim To evaluate the effect of multiple refreshment/activation cycles and temperature on the reaction rate of sodium hypochlorite (NaOCl) with bovine dentine during ultrasonic activated irrigation (UAI) under laboratory conditions. Methodology The root canal walls of 24 standardized root canals in

  17. 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.

  18. Holographic display with LED sources illumination and enlarged viewing angle

    Science.gov (United States)

    Chlipała, Maksymilian; Kozacki, Tomasz

    2016-09-01

    In this work we present holographic display that uses LED sources illumination and have enlarged viewing angle. In this holographic display design we employ phase only SLM because it allows to obtain reconstructions of high quality. Our setup realizes complex coding scheme and allows to reconstruct complex holographic images. Thus reconstruction of inplane holograms is possible. Holograms displayed on SLM are computer generated. For enlargement of angular field of view we use three spatially separated illumination sources and time multiplexing technique. In experimental part, where we display computer generated holograms, we show that it is possible to obtain holographic reconstructions of 3D object with extended viewing angle.

  19. Interactive displays natural human-interface technologies

    CERN Document Server

    Bhowmik, Achintya K

    2014-01-01

    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...

  20. Handbook of Visual Display Technology

    CERN Document Server

    Cranton, Wayne; Fihn, Mark

    2012-01-01

    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.

  1. Pilot-Configurable Information on a Display Unit

    Science.gov (United States)

    Shafaat, Syed Tahir (Inventor); Che, Tan Nhat (Inventor); Ametsitsi, Julian (Inventor); Bell, Charles Frederick (Inventor)

    2017-01-01

    A small thin display unit that can be installed in the flight deck for displaying only flight crew-selected tactical information needed for the task at hand. The flight crew can select the tactical information to be displayed by means of any conventional user interface. Whenever the flight crew selects tactical information for processes the request, including periodically retrieving measured current values or computing current values for the requested tactical parameters and returning those current tactical parameter values to the display unit for display.

  2. The promises and perils of real-time holographic display

    Science.gov (United States)

    Kollin, Joel S.

    2017-06-01

    Real time holographic display has been a long-term goal for many display engineers. The promise of true 3D display with accommodation and motion parallax as well as stereopsis is compelling; the daunting challenges involved in realizing such a display include a very high resolution display which scales radically with field-of-view and viewing zone size. Computation, bandwidth, and the requirement for coherent light are also significant challenges. Progress since the 1960s has been slow, but conceptual breakthroughs and the development of enabling technology have finally enabled significant demonstrations of some applications.

  3. Image Descriptors for Displays

    Science.gov (United States)

    1977-02-01

    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

  4. Alterações cromossômicas causadas pela radiação dos monitores de vídeo de computadores Chromosome abnormalities caused by computer video display monitors' radiation

    Directory of Open Access Journals (Sweden)

    Marcos Roberto Higino Estécio

    2002-06-01

    Full Text Available OBJETIVO: Em decorrência dos questionamentos sobre o efeito deletério das radiações emitidas pelo campo eletromagnético (CEM dos tipos ELF (extremely low frequency e VLF (very low frequency transmitidas pelos monitores de vídeo dos computadores (CRT, foi avaliada a freqüência de anomalias cromossômicas estruturais e a cinética do ciclo celular em indivíduos expostos por seu trabalho à radiação dos CRT. MÉTODOS: A pesquisa de aberrações cromossômicas foi realizada em 2.000 metáfases de primeira divisão celular obtidas de culturas de 48h de linfócitos de sangue venoso periférico de dez indivíduos expostos ao CRT (grupo E e de dez controles (grupo C. A cinética do ciclo celular foi pesquisada pelos índices mitótico (IM e de proliferação celular (IPC. RESULTADOS: A análise estatística evidenciou freqüências significativamente maiores de metáfases com anomalias cromossômicas (E=5,9%; C=3,7% e anomalias/célula (E=0,066±0,026; C=0,040±0,026 nos indivíduos expostos aos CRTs. As alterações citogenéticas mais comuns foram as quebras cromatídicas, com freqüência de 0,034±0,016 no grupo E e de 0,016±0,015 no grupo C. As freqüências de IM e IPC não apresentaram diferenças significantes entre os grupos avaliados. CONCLUSÕES: Os resultados sugerem um efeito genotóxico do CEM emitido pelos CRTs devido à freqüência mais elevada de quebras cromatídicas, enfatizando a necessidade de haver um número maior de estudos com diferentes técnicas que vise a investigar a ação do CEM sobre o material genético.OBJECTIVE: Concerns were raised about the potential damaging effects of electromagnetic field (EMF radiation emissions of ELF (extremely low frequency and VLF (very low frequency computer video display monitors (VDM, it was assessed the frequency of structural chromosome abnormalities and investigated the cell cycle kinetics in individuals occupationally exposed to VDM radiation. METHODS: Chromosome

  5. Interpretation and display of research results

    Directory of Open Access Journals (Sweden)

    Dilip Kumar Kulkarni

    2016-01-01

    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.

  6. Software for Collaborative Use of Large Interactive Displays

    Science.gov (United States)

    Trimble, Jay; Shab, Thodore; Wales, Roxana; Vera, Alonso; Tollinger, Irene; McCurdy, Michael; Lyubimov, Dmitriy

    2006-01-01

    The MERBoard Collaborative Workspace, which is currently being deployed to support the Mars Exploration Rover (MER) Missions, is the first instantiation of a new computing architecture designed to support collaborative and group computing using computing devices situated in NASA mission operations room. It is a software system for generation of large-screen interactive displays by multiple users

  7. Positive display polarity is particularly advantageous for small character sizes: implications for display design.

    Science.gov (United States)

    Piepenbrock, Cosima; Mayr, Susanne; Buchner, Axel

    2014-08-01

    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.

  8. Painting Reproductions on Display

    Directory of Open Access Journals (Sweden)

    Joanna Iranowska

    2017-09-01

    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.

  9. Determining minimal display element requirements for surface map displays

    Science.gov (United States)

    2003-04-14

    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...

  10. Evaluation of technical design of advanced information display(III)

    Energy Technology Data Exchange (ETDEWEB)

    Cha, Woo Chang; Jung, Sung Hae; Park, Joon Yong; Kim, Nam Cheol [Kumoh National Institute of Technology, Gumi (Korea, Republic of); Park, Soon Hyuk [DNT Inc., Daejeon (Korea, Republic of)

    2005-02-15

    As the computer technology is highly developed, the mental model of computer users including NPP operators has been changed from analogue display type-based stereotype to digitalized one. Therefore, it is necessary and confident to consider the issues to evaluate system suitability of advanced information display on visual display terminal. This document is intended for providing an updated and expanded set of user-interface guidelines that meet the needs of designing digitalized information display by finding the generic guidelines involving information display design issues, and the relationship among the guidelines. The design issues and resolutions from the finding may provide the cues for the designers and evaluators of the specific man machine interfaces of digitalized devices. The Design Review Supporting System for Advanced Information Display(DReSS-AID) was developed for the practical usage of evaluators-in-field, which was implemented with Hangul version guidelines.

  11. Three-dimensional image display in medicine.

    Science.gov (United States)

    Mankovich, N J; Robertson, D R; Cheeseman, A M

    1990-05-01

    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. Tactile Navigation Display

    NARCIS (Netherlands)

    Erp, J.B.F. van

    2001-01-01

    The use of the tactile modality is not common in Human Computer Interaction. However, there may be good reasons to do so. For example in situations in which the visual sense is restricted (e.g., in virtual environments lacking a wide field of view, or for the visually handicapped persons), or

  13. Exploiting the Cognitive and Social Benefits of Physically Large Displays

    Science.gov (United States)

    2004-08-01

    2002), large displays not being used for focal tasks automatically project artwork or mimic windows by displaying images from outdoors webcams ...to sensory and judgment processes in humans. For ex- ample, both infants and adults have been shown to exhibit preferences for larger objects in...Distances and visual angles of children and adults . Human Factors, 27(4), 467-476. National Computation Science Alliance. Display Wall-In-A-Box. http

  14. System Acquires And Displays Signal-Propagation Data

    Science.gov (United States)

    Mckeeman, John C.; Remaklus, P. William

    1991-01-01

    Electronic system acquires, controls processing of, and displays data from experiments on propagation of phase-coherent radio signals at frequencies of 12, 20, and 30 GHz. Acquisition equipment coordinates flow of data from multiple input channels to computer. Software provides for multi-tasking and for interactive graphical displays, including easy-to-use windows and pulldown menus with mouse input. Offers outstanding accuracy; acquires and displays data and controls associated equipment, all in real time.

  15. A Well Tempered Mammographic Display

    National Research Council Canada - National Science Library

    Kundel, Harold L

    1997-01-01

    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...

  16. Optimal delivery in display advertising

    OpenAIRE

    Mostagir, Mohamed

    2010-01-01

    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...

  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)

    1994-10-01

    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. Computer Vision Syndrome.

    Science.gov (United States)

    Randolph, Susan A

    2017-07-01

    With the increased use of electronic devices with visual displays, computer vision syndrome is becoming a major public health issue. Improving the visual status of workers using computers results in greater productivity in the workplace and improved visual comfort.

  19. The Spacetime Memory of Geometric Phases and Quantum Computing

    CERN Document Server

    Binder, B

    2002-01-01

    Spacetime memory is defined with a holonomic approach to information processing, where multi-state stability is introduced by a non-linear phase-locked loop. Geometric phases serve as the carrier of physical information and geometric memory (of orientation) given by a path integral measure of curvature that is periodically refreshed. Regarding the resulting spin-orbit coupling and gauge field, the geometric nature of spacetime memory suggests to assign intrinsic computational properties to the electromagnetic field.

  20. Fully updatable holographic stereogram display device based on organic monolithic compound

    Science.gov (United States)

    Tsutsumi, Naoto; Kinashi, Kenji; Tada, Kazuhiro; Fukuzawa, Kodai; Kawabe, Yutaka

    2014-03-01

    Following former report in Optics Express 21, 19880, (2013), we present here a prototype mobile updatable holographic display system using a holographic stereographic technique with a transparent optical device of PMMA doped organic monolithic compound. 50 or 100 elemental holograms which are a series of pictures of object took from different angles can completely reproduce updatable entire hologram of object. Immediately after recording one holographic stereogram, another holographic stereogram can be over-recorded without erasing. Recorded updatable 3D hologram can be viewable for up to a couple of hours directly on a device without any eye glasses and other tools to magnify images. Hologram can be easily refreshed by overwriting without erasing process. Large size and improved holographic device is also presented.

  1. PVDF core-free actuator for Braille displays: design, fabrication process, and testing

    Science.gov (United States)

    Levard, Thomas; Diglio, Paul J.; Lu, Sheng-Guo; Gorny, Lee J.; Rahn, Christopher D.; Zhang, Q. M.

    2011-04-01

    Refreshable Braille displays require many, small diameter actuators to move the pins. The electrostrictive P(VDF-TrFECFE) terpolymer can provide the high strain and actuation force under modest electric fields that are required of this application. In this paper, we develop core-free tubular actuators and integrate them into a 3 × 2 Braille cell. The films are solution cast, stretched to 6 μm thick, electroded, laminated into a bilayer, rolled into a 2 mm diameter tube, bonded, and provided with top and bottom contacts. Experimental testing of 17 actuators demonstrates significant strains (up to 4%). A novel Braille cell is designed and fabricated using six of these actuators.

  2. Core-free rolled actuators for Braille displays using P(VDF-TrFE-CFE)

    Science.gov (United States)

    Levard, Thomas; Diglio, Paul J.; Lu, Sheng-Guo; Rahn, Christopher D.; Zhang, Q. M.

    2012-01-01

    Refreshable Braille displays require many small diameter actuators to move the pins. The electrostrictive P(VDF-TrFE-CFE) terpolymer can provide the high strain and actuation force under modest electric fields that are required for this application. In this paper, we develop core-free tubular actuators and integrate them into a 3 × 2 Braille cell. The terpolymer films are solution cast, stretched to 6 μm thick, electroded, laminated into a bilayer, rolled into a 2 mm diameter tube, bonded, and provided with top and bottom contacts. Experimental testing of 17 actuators demonstrates significant strains (up to 4%) and blocking forces (1 N) at moderate electric fields (100 MV m-1). A novel Braille cell is designed and fabricated using six of these actuators.

  3. Large Displacement in Relaxor Ferroelectric Terpolymer Blend Derived Actuators Using Al Electrode for Braille Displays

    Science.gov (United States)

    Lu, S. G.; Chen, X.; Levard, T.; Diglio, P. J.; Gorny, L. J.; Rahn, C. D.; Zhang, Q. M.

    2015-06-01

    Poly(vinylidene fluoride) (PVDF) based polymers are attractive for applications for artificial muscles, high energy density storage devices etc. Recently these polymers have been found great potential for being used as actuators for refreshable full-page Braille displays for visually impaired people in terms of light weight, miniaturized size, and larger displacement, compared with currently used lead zirconate titanate ceramic actuators. The applied voltages of published polymer actuators, however, cannot be reduced to meet the requirements of using city power. Here, we report the polymer actuator generating quite large displacement and blocking force at a voltage close to the city power. Our embodiments also show good self-healing performance and disuse of lead-containing material, which makes the Braille device safer, more reliable and more environment-friendly.

  4. Imaging display method for airborne oceanographic LIDAR

    Science.gov (United States)

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

    1990-09-01

    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.

  5. LHCb Event display

    CERN Document Server

    Trisovic, Ana

    2014-01-01

    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...

  6. Colorimetry for CRT displays.

    Science.gov (United States)

    Golz, Jürgen; MacLeod, Donald I A

    2003-05-01

    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.

  7. Design of platform for removing screws from LCD display shields

    Science.gov (United States)

    Tu, Zimei; Qin, Qin; Dou, Jianfang; Zhu, Dongdong

    2017-11-01

    Removing the screws on the sides of a shield is a necessary process in disassembling a computer LCD display. To solve this issue, a platform has been designed for removing the screws on display shields. This platform uses virtual instrument technology with LabVIEW as the development environment to design the mechanical structure with the technologies of motion control, human-computer interaction and target recognition. This platform removes the screws from the sides of the shield of an LCD display mechanically thus to guarantee follow-up separation and recycle.

  8. Development of user guidelines for ECAS display design, volume 1

    Science.gov (United States)

    Dodson, D. W.; Shields, N. L., Jr.

    1978-01-01

    Experiment computer application software (ECAS) display design and command usage guidelines were developed, which if followed by spacelab experiments, would standardize methods and techniques for data presentation and commanding via ECAS. These guidelines would provide some commonality among experiments which would enhance crew training and flight operations. The guidelines are applicable to all onboard experiment displays, whether allocated by ECAS or a dedicated experiment processor. A brief description of the spacelab data display system characteristics and of the services provided by the experiment computer operating system is included. Guidelines concerning data presentation and layout of alphanumeric and graphic information are presented along with guidelines concerning keyboard commanding and command feedback.

  9. A multi-viewer tiled autostereoscopic virtual reality display

    KAUST Repository

    Kooima, Robert

    2010-01-01

    Recognizing the value of autostereoscopy for 3D displays in public contexts, we pursue the goal of large-scale, high-resolution, immersive virtual reality using lenticular displays. Our contributions include the scalable tiling of lenticular displays to large fields of view and the use of GPU image interleaving and application optimization for real-time performance. In this context, we examine several ways to improve group-viewing by combining user tracking with multi-view displays. Copyright © 2010 by the Association for Computing Machinery, Inc.

  10. Flexible Animation Computer Program

    Science.gov (United States)

    Stallcup, Scott S.

    1990-01-01

    FLEXAN (Flexible Animation), computer program animating structural dynamics on Evans and Sutherland PS300-series graphics workstation with VAX/VMS host computer. Typical application is animation of spacecraft undergoing structural stresses caused by thermal and vibrational effects. Displays distortions in shape of spacecraft. Program displays single natural mode of vibration, mode history, or any general deformation of flexible structure. Written in FORTRAN 77.

  11. Designing low cost LED display for the billboard

    Science.gov (United States)

    Hong, Yi-Jian; Uang, Chii-Maw; Wang, Ping-Chieh; Ho, Zu-Sheng

    2011-10-01

    With quickly advance of the computer, microelectronics and photonics technologies, LED display panel becomes a new electronic advertising media. It can be used to show any information whatever characters or graphics. Most LED display panels are built of many Light-Emitting Diodes arranged in a matrix form. The display has many advantages such as low power, low cost, long life and high definition. Because the display panel is asked to show rich color, the LED display panel's driving system becomes very complex. The design methodology of LED display panel's driver becomes more and more important to meet the market requirements. Cost is always the most important issue in public market domain. In this paper, we report a design methodology of LED display panel's driver based on the microprocessor control unit (MCU) system and LED display controller IC, HT1632C, to control three colors, RGB, color LED display panel and the modular panel size is 24*16 in matrix form. The HT1632C is a memory mapping LED display controller, it can be used on many applications, such as digital clock, thermometer, counter, voltmeter or other instrumentation readouts. Three pieces of HT1632C are used to drive a 24*16 RGB LED display panel, in our design case. Each HT163C chip is used to control one of the R, G and B color. As the drive mode is driven in DC mode, the RGB display panel can create and totally of seven colors under the control of MCU. The MCU generates the control signal to drive HT1632C. In this study, the software design methodology is adopted with dynamic display principle. When the scan frequency is 60Hz, LED display panel will get the clear picture and be able to display seven colors.

  12. Secure information display by use of multiple decoding masks

    Science.gov (United States)

    Yamamoto, Hirotsugu; Hayasaki, Yoshio; Nishida, Nobuo

    2004-10-01

    Security has become an important issue as information technology has become increasingly pervasive in our everyday lives. Security risks arise with a display that shows decrypted information. In this paper, we propose a secure information display technique by use of visual cryptography. Its decryption requires no special computing devices and is implemented using only human vision. To improve security of the key to decode the encrypted displayed image, multiple decoding masks have been constructed based on visual secret sharing scheme. The proposed display appears as a random pattern to anyone who looks at it unless the person views the displayed image through stacked multiple decoding masks. We have constructed code sets to share the secret image information with a displayed image and multiple decoding masks. The decoding process is a kind of optical processing based on spatial encoding and it needs no computer calculation, which means that no decrypted data exists in a computer system. Thus, the proposed display technique is secure against theft of the decrypted data and eavesdropping of the display signals, and provides a limited viewing zone. Multiple decoding masks increase security of the decoding masks.

  13. Evaluation of technical design of advanced information display(II)

    Energy Technology Data Exchange (ETDEWEB)

    Cha, Woo Chang; Kang, Young Ju; Ji, Jung Hun; Jang, Sung Pil; Jung, Sung Hae; Park, Hyun Jin [Kumoh National Univ., Gumi (Korea, Republic of)

    2004-02-15

    As the computer technology is highly developed, the mental model of computer users including NPP operators has been changed from analogue display type-based stereotype to digitalized one. Therefore, it is necessary and confident to consider the issues to evaluate system suitability of advanced information display on visual display terminal such as CRT. This document is intended for providing an updated and expanded set of user-interface guidelines that meet the needs of designing information display on CRT by finding the generic guidelines involving information display design issues, and the relationship among the guidelines. The design issues and resolutions from the finding may provide the cues for the designers and evaluators of the specific man machine interfaces of digitalized devices.

  14. PACS displays: how to select the right display technology.

    Science.gov (United States)

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

    2014-12-01

    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.

  15. Evaluation of technical design of advanced information display

    Energy Technology Data Exchange (ETDEWEB)

    Cha, Woo Chang; Kang, Young Ju; Ji, Jung Hun; Jang, Sung Pil; Jung, Sung Hae [Kumoh National Institute of Technology, Gumi (Korea, Republic of)

    2003-03-15

    The performance of human machine system such as nuclear power plant is highly dependent on the suitability of the interface design of the system. As the computer technology is highly developed, the mental model of computer users including NPP operators has been changed from analogue display type-based stereotype to digitalized one. Therefore, it is necessary and confident to consider the issues to evaluate system suitability of advanced information display on CRT or CBP (Computer Based Procedure). This document is intended for providing an updated and expanded set of user-interface guidelines that meet the needs of designing information display on CRT by finding the generic guidelines involving information display design issues as much as possible. The design Issues and resolutions from the finding may provide the cues for the designers and evaluators of the specific man machine interfaces of digitalized devices.

  16. Prototyping user displays using CLIPS

    Science.gov (United States)

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

    1990-01-01

    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.

  17. Varrier autostereographic display

    Science.gov (United States)

    Sandin, Daniel J.; Margolis, Todd; Dawe, Greg; Leigh, Jason; DeFanti, Thomas A.

    2001-06-01

    The goal of this research is to develop a head-tracked, stern virtual reality system utilizing plasma or LCD panels. This paper describes a head-tracked barrier auto-stereographic method that is optimized for real-time interactive virtual reality systems. In this method, virtual barrier screen is created simulating the physical barrier screen, and placed in the virtual world in front of the projection plane. An off- axis perspective projection of this barrier screen, combined with the rest of the virtual world, is projected from at least two viewpoints corresponding to the eye positions of the head- tracked viewer. During the rendering process, the simulated barrier screen effectively casts shadows on the projection plane. Since the different projection points cast shadows at different angles, the different viewpoints are spatially separated on the projection plane. These spatially separated images are projected into the viewer's space at different angles by the physical barrier screen. The flexibility of this computational process allows more complicated barrier screens than the parallel opaque lines typically used in barrier strip auto-stereography. In addition this method supports the focusing and steering of images for a user's given viewpoint, and allows for very wide angles of view. This method can produce an effective panel-based auto-stereo virtual reality system.

  18. Advanced Three-Dimensional Display System

    Science.gov (United States)

    Geng, Jason

    2005-01-01

    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

  19. Texture-based correspondence display

    Science.gov (United States)

    Gerald-Yamasaki, Michael

    2005-03-01

    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.

  20. Integrated micromachined scanning display systems

    Science.gov (United States)

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

    1999-07-01

    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.

  1. Filmless multimedia display following cardiac catheterization.

    Science.gov (United States)

    Mathewson, J W

    1997-08-01

    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.

  2. Appliance Displays: Accessibility Challenges and Proposed Solutions.

    Science.gov (United States)

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

    2015-10-01

    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.

  3. 2K radiological image display station

    Science.gov (United States)

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

    1993-09-01

    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.

  4. MO-G-9A-01: Imaging Refresher for Standard of Care Radiation Therapy

    Energy Technology Data Exchange (ETDEWEB)

    Labby, Z [The University of Michigan Hospital ' Health Sys, Ann Arbor, MI (United States); Sensakovic, W [Florida Hospital, Orlando, FL (United States); Hipp, E [NYULMC Clinical Cancer Center, New York, NY (United States); Altman, M [Washington University School of Medicine, St. Louis, MO (United States)

    2014-06-15

    Imaging techniques and technology which were previously the domain of diagnostic medicine are becoming increasingly integrated and utilized in radiation therapy (RT) clinical practice. As such, there are a number of specific imaging topics that are highly applicable to modern radiation therapy physics. As imaging becomes more widely integrated into standard clinical radiation oncology practice, the impetus is on RT physicists to be informed and up-to-date on those imaging modalities relevant to the design and delivery of therapeutic radiation treatments. For example, knowing that, for a given situation, a fluid attenuated inversion recovery (FLAIR) image set is most likely what the physician would like to import and contour is helpful, but may not be sufficient to providing the best quality of care. Understanding the physics of how that pulse sequence works and why it is used could help assess its utility and determine if it is the optimal sequence for aiding in that specific clinical situation. It is thus important that clinical medical physicists be able to understand and explain the physics behind the imaging techniques used in all aspects of clinical radiation oncology practice. This session will provide the basic physics for a variety of imaging modalities for applications that are highly relevant to radiation oncology practice: computed tomography (CT) (including kV, MV, cone beam CT [CBCT], and 4DCT), positron emission tomography (PET)/CT, magnetic resonance imaging (MRI), and imaging specific to brachytherapy (including ultrasound and some brachytherapy specific topics in MR). For each unique modality, the image formation process will be reviewed, trade-offs between image quality and other factors (e.g. imaging time or radiation dose) will be clarified, and typically used cases for each modality will be introduced. The current and near-future uses of these modalities and techniques in radiation oncology clinical practice will also be discussed. Learning

  5. A wearable navigation display can improve attentiveness to the surgical field.

    Science.gov (United States)

    Stewart, James; Billinghurst, Mark

    2016-06-01

    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.

  6. Display Technology: An Annotated Bibliography.

    Science.gov (United States)

    1973-12-01

    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

  7. Cognitive Considerations in Display Design.

    Science.gov (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…

  8. Flexible Bistable Cholesteric Reflective Displays

    Science.gov (United States)

    Yang, Deng-Ke

    2006-03-01

    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.

  9. Real Image Visual Display System

    Science.gov (United States)

    1992-12-01

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

  10. Automated Analysis, Classification, and Display of Waveforms

    Science.gov (United States)

    Kwan, Chiman; Xu, Roger; Mayhew, David; Zhang, Frank; Zide, Alan; Bonggren, Jeff

    2004-01-01

    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.

  11. 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: suzuki_tsh@senova.co.jp

    2005-08-01

    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.

  12. Tone compatibility between HDR displays

    Science.gov (United States)

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

    2016-09-01

    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.

  13. Texture-Based Correspondence Display

    Science.gov (United States)

    Gerald-Yamasaki, Michael

    2004-01-01

    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.

  14. Circular displays: control/display arrangements and stereotype strength with eight different display locations.

    Science.gov (United States)

    Chan, Alan H S; Hoffmann, Errol R

    2015-01-01

    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.

  15. Display advertising: Estimating conversion probability efficiently

    OpenAIRE

    Safari, Abdollah; Altman, Rachel MacKay; Loughin, Thomas M.

    2017-01-01

    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...

  16. The effect of peer-group size on the delivery of feedback in basic life support refresher training: a cluster randomized controlled trial.

    Science.gov (United States)

    Cho, Youngsuk; Je, Sangmo; Yoon, Yoo Sang; Roh, Hye Rin; Chang, Chulho; Kang, Hyunggoo; Lim, Taeho

    2016-07-04

    Students are largely providing feedback to one another when instructor facilitates peer feedback rather than teaching in group training. The number of students in a group affect the learning of students in the group training. We aimed to investigate whether a larger group size increases students' test scores on a post-training test with peer feedback facilitated by instructor after video-guided basic life support (BLS) refresher training. Students' one-rescuer adult BLS skills were assessed by a 2-min checklist-based test 1 year after the initial training. A cluster randomized controlled trial was conducted to evaluate the effect of student number in a group on BLS refresher training. Participants included 115 final-year medical students undergoing their emergency medicine clerkship. The median number of students was 8 in the large groups and 4 in the standard group. The primary outcome was to examine group differences in post-training test scores after video-guided BLS training. Secondary outcomes included the feedback time, number of feedback topics, and results of end-of-training evaluation questionnaires. Scores on the post-training test increased over three consecutive tests with instructor-led peer feedback, but not differ between large and standard groups. The feedback time was longer and number of feedback topics generated by students were higher in standard groups compared to large groups on the first and second tests. The end-of-training questionnaire revealed that the students in large groups preferred the smaller group size compared to their actual group size. In this BLS refresher training, the instructor-led group feedback increased the test score after tutorial video-guided BLS learning, irrespective of the group size. A smaller group size allowed more participations in peer feedback.

  17. Evaluation of Mobile Phones for Large Display Interaction

    OpenAIRE

    Bauer, Jens; Thelen, Sebastian; Ebert, Achim

    2012-01-01

    Large displays have become more and more common in the last few years. While interaction with these displays can be conducted using standard methods such as computer mouse and keyboard, this approach causes issues in multi-user environments, where the various conditions for providing multiple keyboards and mice, together with the facilities to employ them, cannot be met. To solve this problem, interaction using mobile phones was proposed by several authors. Previous solutions were specialized...

  18. Ultraminiature, Micropower Multipurpose Display Project

    Data.gov (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...

  19. Color speckle in laser displays

    Science.gov (United States)

    Kuroda, Kazuo

    2015-07-01

    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).

  20. Cognitive perspectives on map displays for helicopter flight

    Science.gov (United States)

    Harwood, Kelly

    1989-01-01

    Currently accessible technologies are providing entirely new display concepts for enhancing helicopter navigation. Yet the effectiveness of such displays depends on the extent to which they are configured according to principles from research on human performance. Computer generated map displays in the present study were configured according to previous research on maps, navigational problem solving, and spatial cognition in large scale environments. Interest centered on the representation of different spatial relationships that would best support helicopter navigational problem solving. One map display emphasized the global relationships between objects in the environment. The other map showed the pilot's relationship to objects as he traveled through the environment. Twenty skilled pilots used the maps to complete several navigational tasks that occurred within a realistic simulation program tailored for helicopter navigation. Findings indicate that the type of task and mode of flight (low level or Nap of the Earth (NOE)) are important determinants of map display effectiveness.

  1. Quantitative comparison of interaction with shutter glasses and autostereoscopic displays

    Science.gov (United States)

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

    2005-03-01

    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

  2. Successful mLearning Pilot in Senegal: Delivering Family Planning Refresher Training Using Interactive Voice Response and SMS.

    Science.gov (United States)

    Diedhiou, Abdoulaye; Gilroy, Kate E; Cox, Carie Muntifering; Duncan, Luke; Koumtingue, Djimadoum; Pacqué-Margolis, Sara; Fort, Alfredo; Settle, Dykki; Bailey, Rebecca

    2015-06-02

    In-service training of health workers plays a pivotal role in improving service quality. However, it is often expensive and requires providers to leave their posts. We developed and assessed a prototype mLearning system that used interactive voice response (IVR) and text messaging on simple mobile phones to provide in-service training without interrupting health services. IVR allows trainees to respond to audio recordings using their telephone keypad. In 2013, the CapacityPlus project tested the mobile delivery of an 8-week refresher training course on management of contraceptive side effects and misconceptions to 20 public-sector nurses and midwives working in Mékhé and Tivaouane districts in the Thiès region of Senegal. The course used a spaced-education approach in which questions and detailed explanations are spaced and repeated over time. We assessed the feasibility through the system's administrative data, examined participants' experiences using an endline survey, and employed a pre- and post-test survey to assess changes in provider knowledge. All participants completed the course within 9 weeks. The majority of participant prompts to interact with the mobile course were made outside normal working hours (median time, 5:16 pm); average call duration was about 13 minutes. Participants reported positive experiences: 60% liked the ability to determine the pace of the course and 55% liked the convenience. The largest criticism (35% of participants) was poor network reception, and 30% reported dropped IVR calls. Most (90%) participants thought they learned the same or more compared with a conventional course. Knowledge of contraceptive side effects increased significantly, from an average of 12.6/20 questions correct before training to 16.0/20 after, and remained significantly higher 10 months after the end of training than at baseline, at 14.8/20, without any further reinforcement. The mLearning system proved appropriate, feasible, and acceptable to trainees

  3. Recent Refresher Courses

    Indian Academy of Sciences (India)

    Home; http: www.ias.ac.in; jbiosci; mar2007; 351.pdf. 404! error. The page your are looking for can not be found! Please check the link or use the navigation bar at the top. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. Summer Research Fellowship Programme 2018. Posted on 16 December 2017.

  4. A Selected Bibliography of On-Line Visual Displays and Their Applications.

    Science.gov (United States)

    Braidwood, J.

    Contained in this bibliography are 312 references as they related to general principles and problems of information display, man-computer interaction, present and possible future display equipment, ergonomic aspects of display design, and current and potential applications, especially to information processing. (Author/MM)

  5. Tiled++: an enhanced tiled hi-res display wall.

    Science.gov (United States)

    Ebert, Achim; Thelen, Sebastian; Olech, Peter-Scott; Meyer, Joerg; Hagen, Hans

    2010-01-01

    In recent years, high-resolution displays have become increasingly important to decision makers and scientists because large screens combined with a high pixel count facilitate content rich, simultaneous display of computer-generated imagery and high-definition video data from multiple sources. Tiled displays are attractive due to their extended screen real estate, scalability, and low cost. LCD panels are usually preferred over projectors because of their superior resolution. One of the drawbacks of LCD-based tiled displays is the fact that users sometimes get distracted by the screens' bezels, which cause discontinuities in rendered images, animations, or videos. Most conventional solutions either ignore the bezels and display all pixels, causing objects to become distorted, or eliminate the pixels that would normally fall under the bezels, causing pixels to be missing in the display of static images. In animations, the missing pixels will eventually reappear when the object moves, providing an experience that is similar to looking through a French window. In this paper, we present a new scalable approach that leads neither to discontinuities nor to significant loss of information. By projecting onto the bezels, we demonstrate that a combination of LCD-based tiled displays and projection significantly reduces the bezel problem. Our technique eliminates ambiguities that commonly occur on tiled displays in the fields of information visualization, visual data analysis, human-computer interaction, and scientific data display. It improves the usability of multimonitor systems by virtually eliminating the bezels. We describe a setup and provide results from an evaluation experiment conducted on a 3 x 3 and on a 10 x 5 tiled display wall.

  6. Head-Worn Displays: A Review

    Science.gov (United States)

    Cakmakci, Ozan; Rolland, Jannick

    2006-09-01

    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. Computing environment logbook

    Science.gov (United States)

    Osbourn, Gordon C; Bouchard, Ann M

    2012-09-18

    A computing environment logbook logs events occurring within a computing environment. The events are displayed as a history of past events within the logbook of the computing environment. The logbook provides search functionality to search through the history of past events to find one or more selected past events, and further, enables an undo of the one or more selected past events.

  8. Sistim Tampilan Jadwal Pesawat Udara Dengan Mode Dual Display Di Bandara Ahmad Yani Semarang

    Directory of Open Access Journals (Sweden)

    Hari Suseno

    2014-02-01

    Full Text Available Schedule for airline passengers is important information that is provided by the airport manager. Airport flight information on the display screen using a media schedule called flight information display system (FIDS. FIDS system comes from two processes that display arrival and departure information. The device comes from the appearance of two separate computer with information for each. The use of two computers that are used to the old system at the airport FIDS devices. This research aims to create an integrated FIDS system device to combine the information into one unified display in dual display mode pattern display (dual view. Design systems using software programming VB6 and hardware modifications applied to design a system FIDS new on view flight schedules. With a centralized system obtained an interactive display schedules for flight schedule. Keywords : FIDS system; Flight schedule; Display  information

  9. Knowledge aided display design (KADD) system - An evaluation

    Science.gov (United States)

    Hunt, Ruston M.; Frey, Paul R.

    1987-01-01

    The development and evaluation of the Knowledge Aided Display Design (KADD) system is described. Developed to investigate several designer support concepts in the context of the design of computer-generated displays, KADD's implementation uses technology from several disciplines of computer science including data base design and management, graphics, expert systems, and real-time simulation. This paper discusses KADD's goals and concepts, the implementation of the system, and the results of a two-part evaluation to determine the effectiveness of the KADD concepts.

  10. Implementation of PIC Based LED Displays

    OpenAIRE

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

    2014-01-01

    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...

  11. Three-dimensional display technologies

    Science.gov (United States)

    Geng, Jason

    2014-01-01

    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

  12. An expert display system and nuclear power plant control rooms

    Science.gov (United States)

    Beltracchi, L.

    1988-04-01

    General topics for consideration when designing expert display systems and nuclear power plant control room displays are summarized. A system is proposed in which the display of segments (a combined series of graphic primitives or a reusable collection of graphic primitives and primitives attributes stored in memory) controls a cathode-ray-tube's screen to form an image of plant operations. The image consists of an icon of: (1) the process (heat engine cycle), (2) plant control systems, and (3) safety systems. A set of data-driven, forward-chaining computer-stored rules control the display segments. As plant operation changes, measured plant data are processed through the rules, and the results control the deletion and addition of segments to the display format. The icon contains information needed by control rooms operators to monitor plant operations. One example of an expert display is illustrated for the operator's task of monitoring leakage from a safety valve in a steam line of a boiling water reactor (BWR). In another example, the use of an expert display to monitor plant operations during pre-trip, trip, and post-trip operations is discussed as a universal display.

  13. Medical imaging displays and their use in image interpretation.

    Science.gov (United States)

    Kagadis, George C; Walz-Flannigan, Alisa; Krupinski, Elizabeth A; Nagy, Paul G; Katsanos, Konstantinos; Diamantopoulos, Athanasios; Langer, Steve G

    2013-01-01

    The adequate and repeatable performance of the image display system is a key element of information technology platforms in a modern radiology department. However, despite the wide availability of high-end computing platforms and advanced color and gray-scale monitors, the quality and properties of the final displayed medical image may often be inadequate for diagnostic purposes if the displays are not configured and maintained properly. In this article-an expanded version of the Radiological Society of North America educational module "Image Display"-the authors discuss fundamentals of image display hardware, quality control and quality assurance processes for optimal image interpretation settings, and parameters of the viewing environment that influence reader performance. Radiologists, medical physicists, and other allied professionals should strive to understand the role of display technology and proper usage for a quality radiology practice. The display settings and display quality control and quality assurance processes described in this article can help ensure high standards of perceived image quality and image interpretation accuracy.

  14. Quantification of color vision using a tablet display.

    Science.gov (United States)

    Chacon, Alicia; Rabin, Jeff; Yu, Dennis; Johnston, Shawn; Bradshaw, Timothy

    2015-01-01

    Accurate color vision is essential for optimal performance in aviation and space environments using nonredundant color coding to convey critical information. Most color tests detect color vision deficiency (CVD) but fail to diagnose type or severity of CVD, which are important to link performance to occupational demands. The computer-based Cone Contrast Test (CCT) diagnoses type and severity of CVD. It is displayed on a netbook computer for clinical application, but a more portable version may prove useful for deployments, space and aviation cockpits, as well as accident and sports medicine settings. Our purpose was to determine if the CCT can be conducted on a tablet display (Windows 8, Microsoft, Seattle, WA) using touch-screen response input. The CCT presents colored letters visible only to red (R), green (G), and blue (B) sensitive retinal cones to determine the lowest R, G, and B cone contrast visible to the observer. The CCT was measured in 16 color vision normals (CVN) and 16 CVDs using the standard netbook computer and a Windows 8 tablet display calibrated to produce equal color contrasts. Both displays showed 100% specificity for confirming CVN and 100% sensitivity for detecting CVD. In CVNs there was no difference between scores on netbook vs. tablet displays. G cone CVDs showed slightly lower G cone CCT scores on the tablet. CVD can be diagnosed with a tablet display. Ease-of-use, portability, and complete computer capabilities make tablets ideal for multiple settings, including aviation, space, military deployments, accidents and rescue missions, and sports vision. Chacon A, Rabin J, Yu D, Johnston S, Bradshaw T. Quantification of color vision using a tablet display.

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

    CSIR Research Space (South Africa)

    Crampton, Michael C

    2008-11-01

    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...

  16. 'No power' (green) electrowetting display

    Science.gov (United States)

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

    2011-05-01

    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.

  17. Teachers' attitudes towards the use of didactic computer games for learning multiplication

    OpenAIRE

    Gluk, Sara

    2012-01-01

    The purpose of the thesis Teachers' attitudes towards the use of didactic computer games for learning multiplication is to inform the teachers of selected didactic games for the classes of multiplication table and ascertain their views to use them in mathematics. The presence of the multiplication table in the school curriculum is presented in the theoretical part. Its introduction into the lessons and ways of refreshing are presented as well. A chapter discussing information and communica...

  18. Drag and drop display & builder

    Energy Technology Data Exchange (ETDEWEB)

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

    2007-12-01

    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.

  19. NIST display colorimeter calibration facility

    Science.gov (United States)

    Brown, Steven W.; Ohno, Yoshihiro

    2003-07-01

    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.

  20. Spatial 3D infrastructure: display-independent software framework, high-speed rendering electronics, and several new displays

    Science.gov (United States)

    Chun, Won-Suk; Napoli, Joshua; Cossairt, Oliver S.; Dorval, Rick K.; Hall, Deirdre M.; Purtell, Thomas J., II; Schooler, James F.; Banker, Yigal; Favalora, Gregg E.

    2005-03-01

    We present a software and hardware foundation to enable the rapid adoption of 3-D displays. Different 3-D displays - such as multiplanar, multiview, and electroholographic displays - naturally require different rendering methods. The adoption of these displays in the marketplace will be accelerated by a common software framework. The authors designed the SpatialGL API, a new rendering framework that unifies these display methods under one interface. SpatialGL enables complementary visualization assets to coexist through a uniform infrastructure. Also, SpatialGL supports legacy interfaces such as the OpenGL API. The authors" first implementation of SpatialGL uses multiview and multislice rendering algorithms to exploit the performance of modern graphics processing units (GPUs) to enable real-time visualization of 3-D graphics from medical imaging, oil & gas exploration, and homeland security. At the time of writing, SpatialGL runs on COTS workstations (both Windows and Linux) and on Actuality"s high-performance embedded computational engine that couples an NVIDIA GeForce 6800 Ultra GPU, an AMD Athlon 64 processor, and a proprietary, high-speed, programmable volumetric frame buffer that interfaces to a 1024 x 768 x 3 digital projector. Progress is illustrated using an off-the-shelf multiview display, Actuality"s multiplanar Perspecta Spatial 3D System, and an experimental multiview display. The experimental display is a quasi-holographic view-sequential system that generates aerial imagery measuring 30 mm x 25 mm x 25 mm, providing 198 horizontal views.

  1. Computer Assisted Instruction Authoring System. Final Report. Appendix A: Photographs of Some Screen Displays. Experimental Authoring System (XAS). Appendix B: Author Manual for the DERS Interactive Experimental Authoring System (XAS). Appendix C: Syntax of Implementation Two. Computer Assisted Instruction Authoring System.

    Science.gov (United States)

    Hunka, S.

    This project report details the design of an interactive authoring system for the development of computer assisted instructional (CAI) software. This system is possible because the development of more powerful computing and software systems has facilitated authoring systems which allow the development of courseware in an interactive mode and…

  2. 40 CFR 91.1007 - Display exemption.

    Science.gov (United States)

    2010-07-01

    ... 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...

  3. 40 CFR 89.907 - Display exemption.

    Science.gov (United States)

    2010-07-01

    ... 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...

  4. Ambient Displays and Game Design Patterns for Social Learning

    OpenAIRE

    Kelle, Sebastian; Börner, Dirk; Kalz, Marco; Specht, Marcus; Glahn, Christian

    2011-01-01

    Kelle, S., Börner, D., Kalz, M., Specht, M., & Glahn, C. (2010). Ambient Displays and Game Design Patterns for Social Learning. 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. 47-49). November, 29 - December, 3, 2010, Putrajaya, Malaysia: Asia-Pacific Society for Computers in Education.

  5. Display Apple M7649Zm

    CERN Multimedia

    2001-01-01

    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.

  6. Real Time Sonic Boom Display

    Science.gov (United States)

    Haering, Ed

    2014-01-01

    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.

  7. Next Generation Flight Displays Using HTML5

    Science.gov (United States)

    Greenwood, Brian

    2016-01-01

    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

  8. Solar active region display system

    Science.gov (United States)

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

    2003-04-01

    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

  9. Usability of a real-time tracked augmented reality display system in musculoskeletal injections

    Science.gov (United States)

    Baum, Zachary; Ungi, Tamas; Lasso, Andras; Fichtinger, Gabor

    2017-03-01

    PURPOSE: Image-guided needle interventions are seldom performed with augmented reality guidance in clinical practice due to many workspace and usability restrictions. We propose a real-time optically tracked image overlay system to make image-guided musculoskeletal injections more efficient and assess its usability in a bed-side clinical environment. METHODS: An image overlay system consisting of an optically tracked viewbox, tablet computer, and semitransparent mirror allows users to navigate scanned patient volumetric images in real-time using software built on the open-source 3D Slicer application platform. A series of experiments were conducted to evaluate the latency and screen refresh rate of the system using different image resolutions. To assess the usability of the system and software, five medical professionals were asked to navigate patient images while using the overlay and completed a questionnaire to assess the system. RESULTS: In assessing the latency of the system with scanned images of varying size, screen refresh rates were approximately 5 FPS. The study showed that participants found using the image overlay system easy, and found the table-mounted system was significantly more usable and effective than the handheld system. CONCLUSION: It was determined that the system performs comparably with scanned images of varying size when assessing the latency of the system. During our usability study, participants preferred the table-mounted system over the handheld. The participants also felt that the system itself was simple to use and understand. With these results, the image overlay system shows promise for use in a clinical environment.

  10. JTEC panel on display technologies in Japan

    Science.gov (United States)

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

    1992-01-01

    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).

  11. Digital radiography image quality: image processing and display.

    Science.gov (United States)

    Krupinski, Elizabeth A; Williams, Mark B; Andriole, Katherine; Strauss, Keith J; Applegate, Kimberly; Wyatt, Margaret; Bjork, Sandra; Seibert, J Anthony

    2007-06-01

    This article on digital radiography image processing and display is the second of two articles written as part of an intersociety effort to establish image quality standards for digital and computed radiography. The topic of the other paper is digital radiography image acquisition. The articles were developed collaboratively by the ACR, the American Association of Physicists in Medicine, and the Society for Imaging Informatics in Medicine. Increasingly, medical imaging and patient information are being managed using digital data during acquisition, transmission, storage, display, interpretation, and consultation. The management of data during each of these operations may have an impact on the quality of patient care. These articles describe what is known to improve image quality for digital and computed radiography and to make recommendations on optimal acquisition, processing, and display. The practice of digital radiography is a rapidly evolving technology that will require timely revision of any guidelines and standards.

  12. How Does Abundant Display Space Support Data Analysis?

    DEFF Research Database (Denmark)

    Knudsen, Søren

    This thesis explores information visualizations on large, high-resolution touch displays for analysis of massive amounts of data. The ever increasing rate at which data is collected about everything from peoples’ health, over organisations expenditures, to scientific experiments, necessitates new...... data analysis techniques. Information visualizations on large, high-resolution touch displays is a promising answer to these needs, and provide abundant display space for people to make sense of data. However, little is known about how to tailor interactive visualizations to abundant display space...... or about the benefits they might bring. The present thesis draws on the fields of human-computer interaction (HCI) and information visualization (InfoVis) to answer these questions....

  13. Interactive display of molecular models using a microcomputer system

    Science.gov (United States)

    Egan, J. T.; Macelroy, R. D.

    1980-01-01

    A simple, microcomputer-based, interactive graphics display system has been developed for the presentation of perspective views of wire frame molecular models. The display system is based on a TERAK 8510a graphics computer system with a display unit consisting of microprocessor, television display and keyboard subsystems. The operating system includes a screen editor, file manager, PASCAL and BASIC compilers and command options for linking and executing programs. The graphics program, written in USCD PASCAL, involves the centering of the coordinate system, the transformation of centered model coordinates into homogeneous coordinates, the construction of a viewing transformation matrix to operate on the coordinates, clipping invisible points, perspective transformation and scaling to screen coordinates; commands available include ZOOM, ROTATE, RESET, and CHANGEVIEW. Data file structure was chosen to minimize the amount of disk storage space. Despite the inherent slowness of the system, its low cost and flexibility suggests general applicability.

  14. Scientific Graphical Displays on the Macintosh

    Energy Technology Data Exchange (ETDEWEB)

    Grotch, S. [Lawrence Livermore National Lab., CA (United States)

    1994-11-15

    In many organizations scientists have ready access to more than one computer, often both a workstation (e.g., SUN, HP, SGI) as well as a Macintosh or other PC. The scientist commonly uses the work station for `number-crunching` and data analysis whereas the Macintosh is relegated to either word processing or serves as a `dumb terminal` to a larger main-frame computer. In an informal poll of my colleagues, very few of them used their Macintoshes for either statistical analysis or for graphical data display. I believe that this state of affairs is particularly unfortunate because over the last few years both the computational capability, and even more so, the software availability for the Macintosh have become quite formidable. In some instances, very powerful tools are now available on the Macintosh that may not exist (or be far too costly) on the so-called `high end` workstations. Many scientists are simply unaware of the wealth of extremely useful, `off-the-shelf` software that already exists on the Macintosh for scientific graphical and statistical analysis.

  15. The Impact of Information Displays on Decision Making

    Science.gov (United States)

    2017-09-01

    Computational and Information Sciences Directorate, ARL Daniel Cassenti Human Research and Engineering Directorate, ARL Approved for public...distribution is unlimited. 1 1. Introduction The flow of accurate information and proper situational awareness can make the difference between a...ARL-TN-0846 ● SEP 2017 US Army Research Laboratory The Impact of Information Displays on Decision Making by John Shevlin

  16. Towards a Gesture Repertoire for Cooperative Interaction with Large Displays

    NARCIS (Netherlands)

    Fikkert, F.W.; van der Vet, P.E.

    2007-01-01

    Manual gesture input is a key component in multimodal human-computer interaction. In this position paper, we describe the design of a series of experiments aimed at the construction of a bimanual gesture repertoire for natural, cooperative, co-located interaction with large displays. The experiments

  17. Mat board vs. murals: tips on producing scientific poster displays.

    Science.gov (United States)

    Peters, B A

    1996-01-01

    Poster displays provide a convenient method for exchanging information at medical and scientific meetings. This article presents guidelines for developing effective posters and compares the advantages and disadvantages of two production methods: (1) manual pasteup of material onto mat board and (2) direct imaging of murals that are created using computers and page layout software.

  18. "Follow the White Rabbit". "The Ultimate Display" e "Matrix"

    Directory of Open Access Journals (Sweden)

    Milena Contini

    2014-06-01

    Full Text Available Starting from Alice's citations in the two famous books by Lewis Carroll, this article aims to highlight the overlaps between computer scientist Ivan Edward Sutherland 's remarks in the essay The Ultimate Display (1965 and the central idea underlying Larry e Andy Wachowski's cinematographic trilogy The Matrix (1999-2003.

  19. Proximity Displays for Access Control

    Science.gov (United States)

    2012-09-01

    Allan Beaufour and Philippe Bonnet . Personal servers as digital keys. In Proceedings of the IEEE International conference of Pervasive Computing and...8.1, 8.5.1 [70] Sylvie Noël and Jean- Marc Robert. Empirical study on collaborative writing: What do co-authors do, use, and like? Comput. Supported

  20. Computer Generated Pictorial Stores Management Displays for Fighter Aircraft.

    Science.gov (United States)

    1983-05-01

    switch hit. Mistakes made by pushing an inappropriate switch were corrected either by selecting the correct switch if it was available on the same...frequency (pre- entry = 236.7). In order to correct the mistake , the pilot had to clear the incorrect digit. One push of the CLEAR key on the DEK erased the... CPE S REMAIN SPEED REMAIN ATA REMAIN REMAIN 5053.00 N ~ 0720 245 ___35.9____ 1239.00 E AF MAY. *7O Figure 9. AF Form 70 4 4 24 AFWAL-TR-83-3016 switch

  1. Transparent stereoscopic display and application

    Science.gov (United States)

    Ranieri, Nicola; Seifert, Hagen; Gross, Markus

    2014-03-01

    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.

  2. Game engines and immersive displays

    Science.gov (United States)

    Chang, Benjamin; Destefano, Marc

    2014-02-01

    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.

  3. Human Vocabulary Use as Display

    Directory of Open Access Journals (Sweden)

    Jeremy Rosenberg

    2008-07-01

    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.

  4. Integrated Launch Operations Applications Remote Display Developer

    Science.gov (United States)

    Flemming, Cedric M., II

    2014-01-01

    This internship provides the opportunity to support the creation and use of Firing Room Displays and Firing Room Applications that use an abstraction layer called the Application Control Language (ACL). Required training included video watching, reading assignments, face-to-face instruction and job shadowing other Firing Room software developers as they completed their daily duties. During the training period various computer and access rights needed for creating the applications were obtained. The specific ground subsystems supported are the Cryogenics Subsystems, Liquid Hydrogen (LH2) and Liquid Oxygen (LO2). The cryogenics team is given the task of finding the best way to handle these very volatile liquids that are used to fuel the Space Launch System (SLS) and the Orion flight vehicles safely.

  5. Human-computer interaction fundamentals and practice

    CERN Document Server

    Kim, Gerard Jounghyun

    2015-01-01

    Introduction What HCI Is and Why It Is Important Principles of HCI     ""Know Thy User""      Understand the Task      Reduce Memory Load      Strive for Consistency      Remind Users and Refresh Their Memory      Prevent Errors/Reversal of Action      Naturalness SummaryReferences Specific HCI Guidelines Guideline Categories Examples of HCI Guidelines      Visual Display Layout (General HCI Design)      Information Structuring and Navigation (General HCI Design)      Taking User Input (General H

  6. Optimizing virtual reality for all users through gaze-contingent and adaptive focus displays

    Science.gov (United States)

    Padmanaban, Nitish; Konrad, Robert; Stramer, Tal; Cooper, Emily A.; Wetzstein, Gordon

    2017-02-01

    From the desktop to the laptop to the mobile device, personal computing platforms evolve over time. Moving forward, wearable computing is widely expected to be integral to consumer electronics and beyond. The primary interface between a wearable computer and a user is often a near-eye display. However, current generation near-eye displays suffer from multiple limitations: they are unable to provide fully natural visual cues and comfortable viewing experiences for all users. At their core, many of the issues with near-eye displays are caused by limitations in conventional optics. Current displays cannot reproduce the changes in focus that accompany natural vision, and they cannot support users with uncorrected refractive errors. With two prototype near-eye displays, we show how these issues can be overcome using display modes that adapt to the user via computational optics. By using focus-tunable lenses, mechanically actuated displays, and mobile gaze-tracking technology, these displays can be tailored to correct common refractive errors and provide natural focus cues by dynamically updating the system based on where a user looks in a virtual scene. Indeed, the opportunities afforded by recent advances in computational optics open up the possibility of creating a computing platform in which some users may experience better quality vision in the virtual world than in the real one.

  7. Short-term retention of a single word relies on retrieval from long-term memory when both rehearsal and refreshing are disrupted.

    Science.gov (United States)

    Rose, Nathan S; Buchsbaum, Bradley R; Craik, Fergus I M

    2014-07-01

    Many working memory (WM) models propose that the focus of attention (or primary memory) has a capacity limit of one to four items, and therefore, that performance on WM tasks involves retrieving some items from long-term (or secondary) memory (LTM). In the present study, we present evidence suggesting that recall of even one item on a WM task can involve retrieving it from LTM. The WM task required participants to make a deep (living/nonliving) or shallow ("e"/no "e") level-of-processing (LOP) judgment on one word and to recall the word after a 10-s delay on each trial. During the delay, participants either rehearsed the word or performed an easy or a hard math task. When the to-be-remembered item could be rehearsed, recall was fast and accurate. When it was followed by a math task, recall was slower, error-prone, and benefited from a deeper LOP at encoding, especially for the hard math condition. The authors suggest that a covert-retrieval mechanism may have refreshed the item during easy math, and that the hard math condition shows that even a single item cannot be reliably held in WM during a sufficiently distracting task--therefore, recalling the item involved retrieving it from LTM. Additionally, performance on a final free recall (LTM) test was better for items recalled following math than following rehearsal, suggesting that initial recall following math involved elaborative retrieval from LTM, whereas rehearsal did not. The authors suggest that the extent to which performance on WM tasks involves retrieval from LTM depends on the amounts of disruption to both rehearsal and covert-retrieval/refreshing maintenance mechanisms.

  8. Preliminary display comparison for dental diagnostic applications

    Science.gov (United States)

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

    2012-02-01

    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.

  9. Density Gradient Columns for Chemical Displays.

    Science.gov (United States)

    Guenther, William B.

    1986-01-01

    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)

  10. 40 CFR 90.907 - Display exemption.

    Science.gov (United States)

    2010-07-01

    ... 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...

  11. 40 CFR 85.1707 - Display exemption.

    Science.gov (United States)

    2010-07-01

    ... 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...

  12. Full color waveguide liquid crystal display.

    Science.gov (United States)

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

    2017-09-15

    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. The use of interpractive graphic displays for interpretation of surface design parameters

    Science.gov (United States)

    Talcott, N. A., Jr.

    1981-01-01

    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.

  14. Plastic Substrates for Flexible Displays

    Science.gov (United States)

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

    2006-05-01

    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.

  15. Light-field and holographic three-dimensional displays [Invited].

    Science.gov (United States)

    Yamaguchi, Masahiro

    2016-12-01

    A perfect three-dimensional (3D) display that satisfies all depth cues in human vision is possible if a light field can be reproduced exactly as it appeared when it emerged from a real object. The light field can be generated based on either light ray or wavefront reconstruction, with the latter known as holography. This paper first provides an overview of the advances of ray-based and wavefront-based 3D display technologies, including integral photography and holography, and the integration of those technologies with digital information systems. Hardcopy displays have already been used in some applications, whereas the electronic display of a light field is under active investigation. Next, a fundamental question in this technology field is addressed: what is the difference between ray-based and wavefront-based methods for light-field 3D displays? In considering this question, it is of particular interest to look at the technology of holographic stereograms. The phase information in holography contributes to the resolution of a reconstructed image, especially for deep 3D images. Moreover, issues facing the electronic display system of light fields are discussed, including the resolution of the spatial light modulator, the computational techniques of holography, and the speckle in holographic images.

  16. Design of the control system for full-color LED display based on MSP430 MCU

    Science.gov (United States)

    Li, Xue; Xu, Hui-juan; Qin, Ling-ling; Zheng, Long-jiang

    2013-08-01

    The LED display incorporate the micro electronic technique, computer technology and information processing as a whole, it becomes the most preponderant of a new generation of display media with the advantages of bright in color, high dynamic range, high brightness and long operating life, etc. The LED display has been widely used in the bank, securities trading, highway signs, airport and advertising, etc. According to the display color, the LED display screen is divided into monochrome screen, double color display and full color display. With the diversification of the LED display's color and the ceaseless rise of the display demands, the LED display's drive circuit and control technology also get the corresponding progress and development. The earliest monochrome screen just displaying Chinese characters, simple character or digital, so the requirements of the controller are relatively low. With the widely used of the double color LED display, the performance of its controller will also increase. In recent years, the full color LED display with three primary colors of red, green, blue and grayscale display effect has been highly attention with its rich and colorful display effect. Every true color pixel includes three son pixels of red, green, blue, using the space colour mixture to realize the multicolor. The dynamic scanning control system of LED full-color display is designed based on MSP430 microcontroller technology of the low power consumption. The gray control technology of this system used the new method of pulse width modulation (PWM) and 19 games show principle are combining. This method in meet 256 level grayscale display conditions, improves the efficiency of the LED light device, and enhances the administrative levels feels of the image. Drive circuit used 1/8 scanning constant current drive mode, and make full use of the single chip microcomputer I/O mouth resources to complete the control. The system supports text, pictures display of 256 grayscale

  17. Fast image enhancement method for display images in ambient light.

    Science.gov (United States)

    Yang, Cheng; Zhang, Jianqi; Chang, Wenjing

    2016-02-01

    Display images under high illumination may appear to have lower lightness and attenuated contrast. In this paper, we review the image degradation phenomenon in ambient light through photoreceptor physiology. The influence of different environmental parameters and their effects on various gray areas in images can be evaluated by the cone response difference. Based on this, we propose a fast global tone mapping method to minimize the cone response difference at different pixel intensity levels of images displayed at different illumination levels. This method has a superior computational efficiency and higher evaluation score than existing algorithms.

  18. Hardware/Software Expansion of Display Terminal and CPU

    Science.gov (United States)

    Adams, B. R.

    1986-01-01

    IBM PC coupling used to expand capabilities of expensive specialpurpose system. IBM PC was interfaced to Tektronix CP1151 computer through teletype port of Tektronix 4010-1 computer display terminal. Electronic interface built to provide isolation, level shifting, and signal inversion between IBM PC RS-232 port and 4010-1 terminal teletype port. Modifications to 4010-1 terminal made to increase teletype rate from 110 to 9,600 baud. Software for both computers developed to give control of DPO system to IBM PC and provide data/program file exchange between two computers. Coupling demonstrates utilization of low-cost microcomputer hardware and software to expand capabilities of expensive special-purpose computer systems.

  19. Multiple frequencies sequential coding for SSVEP-based brain-computer interface.

    Directory of Open Access Journals (Sweden)

    Yangsong Zhang

    Full Text Available BACKGROUND: Steady-state visual evoked potential (SSVEP-based brain-computer interface (BCI has become one of the most promising modalities for a practical noninvasive BCI system. Owing to both the limitation of refresh rate of liquid crystal display (LCD or cathode ray tube (CRT monitor, and the specific physiological response property that only a very small number of stimuli at certain frequencies could evoke strong SSVEPs, the available frequencies for SSVEP stimuli are limited. Therefore, it may not be enough to code multiple targets with the traditional frequencies coding protocols, which poses a big challenge for the design of a practical SSVEP-based BCI. This study aimed to provide an innovative coding method to tackle this problem. METHODOLOGY/PRINCIPAL FINDINGS: In this study, we present a novel protocol termed multiple frequencies sequential coding (MFSC for SSVEP-based BCI. In MFSC, multiple frequencies are sequentially used in each cycle to code the targets. To fulfill the sequential coding, each cycle is divided into several coding epochs, and during each epoch, certain frequency is used. Obviously, different frequencies or the same frequency can be presented in the coding epochs, and the different epoch sequence corresponds to the different targets. To show the feasibility of MFSC, we used two frequencies to realize four targets and carried on an offline experiment. The current study shows that: 1 MFSC is feasible and efficient; 2 the performance of SSVEP-based BCI based on MFSC can be comparable to some existed systems. CONCLUSIONS/SIGNIFICANCE: The proposed protocol could potentially implement much more targets with the limited available frequencies compared with the traditional frequencies coding protocol. The efficiency of the new protocol was confirmed by real data experiment. We propose that the SSVEP-based BCI under MFSC might be a promising choice in the future.

  20. Dynamic Resolution in GPU-Accelerated Volume Rendering to Autostereoscopic Multiview Lenticular Displays

    Directory of Open Access Journals (Sweden)

    Daniel Ruijters

    2008-09-01

    Full Text Available The generation of multiview stereoscopic images of large volume rendered data demands an enormous amount of calculations. We propose a method for hardware accelerated volume rendering of medical data sets to multiview lenticular displays, offering interactive manipulation throughout. The method is based on buffering GPU-accelerated direct volume rendered visualizations of the individual views from their respective focal spot positions, and composing the output signal for the multiview lenticular screen in a second pass. This compositing phase is facilitated by the fact that the view assignment per subpixel is static, and therefore can be precomputed. We decoupled the resolution of the individual views from the resolution of the composited signal, and adjust the resolution on-the-fly, depending on the available processing resources, in order to maintain interactive refresh rates. The optimal resolution for the volume rendered views is determined by means of an analysis of the lattice of the output signal for the lenticular screen in the Fourier domain.

  1. Interruption and Pausing of Public Display Games

    DEFF Research Database (Denmark)

    Feuchtner, Tiare; Walter, Robert; Müller, Jörg

    2016-01-01

    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....

  2. Fishualization: a group feedback display

    NARCIS (Netherlands)

    Schavemaker, J.G.M.; Boertjes, E.M.; Koldijk, S.J.; Wiertz, L.; Verberne, S.; Sappelli, M.; Kaptein, A.M.

    2014-01-01

    In this contribution1 we present a novel psychological intervention that maps human computer activity to a group feedback device on the basis of a combination of various types of unobtrusive, low-level sensors. The goal is to enable employees to gain insights into their working habits, to reduce

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

    NARCIS (Netherlands)

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

    1992-01-01

    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

  4. Practical low-cost stereo head-mounted display

    Science.gov (United States)

    Pausch, Randy; Dwivedi, Pramod; Long, Allan C., Jr.

    1991-08-01

    A high-resolution head-mounted display has been developed from substantially cheaper components than previous systems. Monochrome displays provide 720 by 280 monochrome pixels to each eye in a one-inch-square region positioned approximately one inch from each eye. The display hardware is the Private Eye, manufactured by Reflection Technologies, Inc. The tracking system uses the Polhemus Isotrak, providing (x,y,z, azimuth, elevation and roll) information on the user''s head position and orientation 60 times per second. In combination with a modified Nintendo Power Glove, this system provides a full-functionality virtual reality/simulation system. Using two host 80386 computers, real-time wire frame images can be produced. Other virtual reality systems require roughly 250,000 in hardware, while this one requires only 5,000. Stereo is particularly useful for this system because shading or occlusion cannot be used as depth cues.

  5. Simple virtual reality display of fetal volume ultrasound.

    Science.gov (United States)

    Tutschek, B

    2008-12-01

    Three-dimensional (3D) ultrasound volume acquisition, analysis and display of fetal structures have enhanced their visualization and greatly improved the general understanding of their anatomy and pathology. The dynamic display of volume data generally depends on proprietary software, usually supplied with the ultrasound system, and on the operator's ability to maneuver the dataset digitally. We have used relatively simple tools and an established storage, display and manipulation format to generate non-linear virtual reality object movies of prenatal images (including moving sequences and 3D-rendered views) that can be navigated easily and interactively on any current computer. This approach permits a viewing or learning experience that is superior to watching a linear movie passively. (c) 2008 ISUOG.

  6. Stereoscopic model for depth-fused 3D (DFD) display

    Science.gov (United States)

    Yamamoto, H.; Sonobe, H.; Tsunakawa, A.; Kawakami, J.; Suyama, S.

    2014-03-01

    This paper proposes a stereoscopic model for DFD display that explains the continuous depth modulation and protruding depth perception. The model is composed of four steps: preparation of DFD images, geometrical calculation of viewed images, human visual function for detecting intensity changes, and stereoscopic depth perception. In this paper, two types of displayed images for DFD display are prepared: the former pairs are for conventional DFD, where a fused image is located between the layered images; the latter pairs are for protruding DFD, where a fused image is located closer than the foreground image or further than the background image. Viewed images at both eye positions are simulated geometrically in computer vision optics model. In order to detect intensity changes, we have utilized Laplacian operation on a Gaussian blurred image. Stereoscopic depths are calculated by matching the zero crossing position on the Laplacian operated images. It is revealed that our stereoscopic model explains both conventional and protruding DFDs.

  7. Volumetric 3D Display System with Static Screen

    Science.gov (United States)

    Geng, Jason

    2011-01-01

    Current display technology has relied on flat, 2D screens that cannot truly convey the third dimension of visual information: depth. In contrast to conventional visualization that is primarily based on 2D flat screens, the volumetric 3D display possesses a true 3D display volume, and places physically each 3D voxel in displayed 3D images at the true 3D (x,y,z) spatial position. Each voxel, analogous to a pixel in a 2D image, emits light from that position to form a real 3D image in the eyes of the viewers. Such true volumetric 3D display technology provides both physiological (accommodation, convergence, binocular disparity, and motion parallax) and psychological (image size, linear perspective, shading, brightness, etc.) depth cues to human visual systems to help in the perception of 3D objects. In a volumetric 3D display, viewers can watch the displayed 3D images from a completely 360 view without using any special eyewear. The volumetric 3D display techniques may lead to a quantum leap in information display technology and can dramatically change the ways humans interact with computers, which can lead to significant improvements in the efficiency of learning and knowledge management processes. Within a block of glass, a large amount of tiny dots of voxels are created by using a recently available machining technique called laser subsurface engraving (LSE). The LSE is able to produce tiny physical crack points (as small as 0.05 mm in diameter) at any (x,y,z) location within the cube of transparent material. The crack dots, when illuminated by a light source, scatter the light around and form visible voxels within the 3D volume. The locations of these tiny voxels are strategically determined such that each can be illuminated by a light ray from a high-resolution digital mirror device (DMD) light engine. The distribution of these voxels occupies the full display volume within the static 3D glass screen. This design eliminates any moving screen seen in previous

  8. 75 FR 73126 - Certain Video Displays, Components Thereof, and Products Containing Same; Notice of Commission...

    Science.gov (United States)

    2010-11-29

    ... COMMISSION Certain Video Displays, Components Thereof, and Products Containing Same; Notice of Commission... importation of certain video displays, components thereof, or products containing same that infringe one or... Matter of Certain Devices for Connecting Computers via Telephone Lines, Inv. No. 337-TA-360, USITC Pub...

  9. Virtual Display Design and Evaluation of Clothing: A Design Process Support System

    Science.gov (United States)

    Zhang, Xue-Fang; Huang, Ren-Qun

    2014-01-01

    This paper proposes a new computer-aided educational system for clothing visual merchandising and display. It aims to provide an operating environment that supports the various stages of display design in a user-friendly and intuitive manner. First, this paper provides a brief introduction to current software applications in the field of…

  10. Holographic Waveguided See-Through Display Project

    Data.gov (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...

  11. Projection/Reflection Heads-up Display

    Data.gov (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...

  12. OZ: An Innovative Primary Flight Display Project

    Data.gov (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,...

  13. X-Windows Widget for Image Display

    Science.gov (United States)

    Deen, Robert G.

    2011-01-01

    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.

  14. National Weather Service: Watch, Warning, Advisory Display

    Science.gov (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 ...

  15. Working at a Ferranti-Argus graphics display linked to a CDC 6600

    CERN Document Server

    CERN PhotoLab

    1975-01-01

    The photo shows a Ferranti-Argus graphics display linked to a CDC 6600 computer running one of the first interactive graphics packages for physics analysis. The people around are Jean-Claude Marin, Harry Renshall and Emilio Pagiola (right).

  16. Advanced Transport Operating System (ATOPS) color displays software description: MicroVAX system

    Science.gov (United States)

    Slominski, Christopher J.; Plyler, Valerie E.; Dickson, Richard W.

    1992-01-01

    This document describes the software created for the Display MicroVAX computer used for the Advanced Transport Operating Systems (ATOPS) project on the Transport Systems Research Vehicle (TSRV). The software delivery of February 27, 1991, known as the 'baseline display system', is the one described in this document. Throughout this publication, module descriptions are presented in a standardized format which contains module purpose, calling sequence, detailed description, and global references. The global references section includes subroutines, functions, and common variables referenced by a particular module. The system described supports the Research Flight Deck (RFD) of the TSRV. The RFD contains eight Cathode Ray Tubes (CRTs) which depict a Primary Flight Display, Navigation Display, System Warning Display, Takeoff Performance Monitoring System Display, and Engine Display.

  17. Psychological Implications for Submarine Display Design

    Science.gov (United States)

    2005-08-01

    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 approach...to visual perception is outlined and the relevance of transformational theory to display design is discussed. The paper also discusses a number of

  18. Interactive Display of Surfaces Using Subdivision Surfaces and Wavelets

    Energy Technology Data Exchange (ETDEWEB)

    Duchaineau, M A; Bertram, M; Porumbescu, S; Hamann, B; Joy, K I

    2001-10-03

    Complex surfaces and solids are produced by large-scale modeling and simulation activities in a variety of disciplines. Productive interaction with these simulations requires that these surfaces or solids be viewable at interactive rates--yet many of these surfaced solids can contain hundreds of millions of polygondpolyhedra. Interactive display of these objects requires compression techniques to minimize storage, and fast view-dependent triangulation techniques to drive the graphics hardware. In this paper, we review recent advances in subdivision-surface wavelet compression and optimization that can be used to provide a framework for both compression and triangulation. These techniques can be used to produce suitable approximations of complex surfaces of arbitrary topology, and can be used to determine suitable triangulations for display. The techniques can be used in a variety of applications in computer graphics, computer animation and visualization.

  19. Light Field Rendering for Head Mounted Displays using Pixel Reprojection

    DEFF Research Database (Denmark)

    Hansen, Anne Juhler; Klein, Jákup; Kraus, Martin

    2017-01-01

    Light field displays have advantages over traditional stereoscopic head mounted displays, for example, because they can overcome the vergence-accommodation conflict. However, rendering light fields can be a heavy task for computers due to the number of images that have to be rendered. Since much...... of the information of the different images is redundant, we use pixel reprojection from the corner cameras to compute the remaining images in the light field. We compare the reprojected images with directly rendered images in a user test. In most cases, the users were unable to distinguish the images. In extreme...... cases, the reprojection approach is not capable of creating the light field. We conclude that pixel reprojection is a feasible method for rendering light fields as far as quality of perspective and diffuse shading is concerned, but render time needs to be reduced to make the method practical....

  20. How Visual Displays Affect Cognitive Processing

    Science.gov (United States)

    McCrudden, Matthew T.; Rapp, David N.

    2017-01-01

    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…

  1. Directional light scanning 3-D display

    Science.gov (United States)

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

    2009-11-01

    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.

  2. Visual Merchandising through Display: Advertising Services Occupations.

    Science.gov (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…

  3. 27 CFR 6.55 - Display service.

    Science.gov (United States)

    2010-04-01

    ... 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...

  4. 9 CFR 392.6 - Public display.

    Science.gov (United States)

    2010-01-01

    ... 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...

  5. 14 CFR 21.161 - Display.

    Science.gov (United States)

    2010-01-01

    ... 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...

  6. Tonopah Test Range EGS graphics tracking display system: HP370

    Energy Technology Data Exchange (ETDEWEB)

    Meyer, R.H.; Bauhs, K.C.

    1994-08-01

    This report describes the HP370 component of the Enhanced Graphics System (EGS) used at Tonopah Test Range (TTR). Selected Radar data is fed into the computer systems and the resulting tracking symbols are displayed on high-resolution video monitors in real time. These tracking symbols overlay background maps and are used for monitoring/controlling various flight vehicles. This report discusses both the operational aspects and the internal configuration of the HP370 Workstation portion of the EGS system.

  7. Shape Displays: Spatial Interaction with Dynamic Physical Form.

    Science.gov (United States)

    Leithinger, Daniel; Follmer, Sean; Olwal, Alex; Ishii, Hiroshi

    2015-01-01

    Shape displays are an emerging class of devices that emphasize actuation to enable rich physical interaction, complementing concepts in virtual and augmented reality. The ability to render form introduces new opportunities to touch, grasp, and manipulate dynamic physical content and tangible objects, in both nearby and remote environments. This article presents novel hardware, interaction techniques, and applications, which point to the potential for extending the ways that we traditionally interact with the physical world, empowered by digital computation.

  8. Tangible display systems: bringing virtual surfaces into the real world

    Science.gov (United States)

    Ferwerda, James A.

    2012-03-01

    We are developing tangible display systems that enable natural interaction with virtual surfaces. Tangible display systems are based on modern mobile devices that incorporate electronic image displays, graphics hardware, tracking systems, and digital cameras. Custom software allows the orientation of a device and the position of the observer to be tracked in real-time. Using this information, realistic images of surfaces with complex textures and material properties illuminated by environment-mapped lighting, can be rendered to the screen at interactive rates. Tilting or moving in front of the device produces realistic changes in surface lighting and material appearance. In this way, tangible displays allow virtual surfaces to be observed and manipulated as naturally as real ones, with the added benefit that surface geometry and material properties can be modified in real-time. We demonstrate the utility of tangible display systems in four application areas: material appearance research; computer-aided appearance design; enhanced access to digital library and museum collections; and new tools for digital artists.

  9. A QUALITATIVE METHOD TO ESTIMATE HSI DISPLAY COMPLEXITY

    Directory of Open Access Journals (Sweden)

    JACQUES HUGO

    2013-04-01

    Full Text Available There is mounting evidence that complex computer system displays in control rooms contribute to cognitive complexity and, thus, to the probability of human error. Research shows that reaction time increases and response accuracy decreases as the number of elements in the display screen increase. However, in terms of supporting the control room operator, approaches focusing on addressing display complexity solely in terms of information density and its location and patterning, will fall short of delivering a properly designed interface. This paper argues that information complexity and semantic complexity are mandatory components when considering display complexity and that the addition of these concepts assists in understanding and resolving differences between designers and the preferences and performance of operators. This paper concludes that a number of simplified methods, when combined, can be used to estimate the impact that a particular display may have on the operator's ability to perform a function accurately and effectively. We present a mixed qualitative and quantitative approach and a method for complexity estimation.

  10. CERN students display their work

    CERN Multimedia

    Anaïs Schaeffer

    2011-01-01

    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...

  11. Citizenship displayed by disabled people

    Directory of Open Access Journals (Sweden)

    Eliana Prado Carlino

    2010-12-01

    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.

  12. A New Dynamic Tactile Display for Reconfigurable Braille: Implementation and Tests

    Directory of Open Access Journals (Sweden)

    Paolo eMotto Ros

    2014-04-01

    Full Text Available Different tactile interfaces have been proposed to represent either text (braille or, in a few cases, tactile large-area screens as replacements for visual displays. None of the implementations so far can be customized to match users preferences, perceptual differences and skills. Optimal choices in these respects are still debated; we approach a solution by designing a flexible device allowing the user to choose key parameters of tactile transduction.We present here a new dynamic tactile display, a 8×8 matrix of plastic pins based on well-established and reliable piezoelectric technology to offer high resolution (pin gap 0.7 mm as well as tunable strength of the pins displacement, and refresh rate up to 50 s-1. It can reproduce arbitrary patterns, allowing it to serve the dual purpose of providing, depending on contingent user needs, tactile rendering of non-character information, and reconfigurable braille rendering. Given the relevance of the latter functionality for the expected average user, we considered testing braille encoding by volunteers a benchmark of primary importance. Tests were performed to assess the acceptance and usability with minimal training, and to check whether the offered flexibility was indeed perceived by the subject as an added value compared to conventional braille devices. Different mappings between braille dots and actual tactile pins were implemented to match user needs.Performances of eight experienced braille readers were defined as the fraction of correct identifications of rendered content. Different information contents were tested (median performance on random strings, words, sentences identification was about 75%, 85%, 98%, respectively, with a significant increase, p< 0.01, obtaining statistically significant improvements in performance during the tests (p< 0.05. Experimental results, together with qualitative ratings provided by the subjects, show a good acceptance and the effectiveness of the proposed

  13. A new dynamic tactile display for reconfigurable braille: implementation and tests.

    Science.gov (United States)

    Motto Ros, Paolo; Dante, Vittorio; Mesin, Luca; Petetti, Erminio; Del Giudice, Paolo; Pasero, Eros

    2014-01-01

    Different tactile interfaces have been proposed to represent either text (braille) or, in a few cases, tactile large-area screens as replacements for visual displays. None of the implementations so far can be customized to match users' preferences, perceptual differences and skills. Optimal choices in these respects are still debated; we approach a solution by designing a flexible device allowing the user to choose key parameters of tactile transduction. We present here a new dynamic tactile display, a 8 × 8 matrix of plastic pins based on well-established and reliable piezoelectric technology to offer high resolution (pin gap 0.7mm) as well as tunable strength of the pins displacement, and refresh rate up to 50s(-1). It can reproduce arbitrary patterns, allowing it to serve the dual purpose of providing, depending on contingent user needs, tactile rendering of non-character information, and reconfigurable braille rendering. Given the relevance of the latter functionality for the expected average user, we considered testing braille encoding by volunteers a benchmark of primary importance. Tests were performed to assess the acceptance and usability with minimal training, and to check whether the offered flexibility was indeed perceived by the subject as an added value compared to conventional braille devices. Different mappings between braille dots and actual tactile pins were implemented to match user needs. Performances of eight experienced braille readers were defined as the fraction of correct identifications of rendered content. Different information contents were tested (median performance on random strings, words, sentences identification was about 75%, 85%, 98%, respectively, with a significant increase, p < 0.01), obtaining statistically significant improvements in performance during the tests (p < 0.05). Experimental results, together with qualitative ratings provided by the subjects, show a good acceptance and the effectiveness of the proposed solution.

  14. The effect of display movement angle, indicator type and display location on control/display stereotype strength.

    Science.gov (United States)

    Hoffmann, Errol R; Chan, Alan H S

    2017-08-01

    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.

  15. Optical advantages in retinal scanning displays

    Science.gov (United States)

    Urey, Hakan

    2000-06-01

    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.

  16. Conceptual Design of Industrial Process Displays

    DEFF Research Database (Denmark)

    Pedersen, C.R.; Lind, Morten

    1999-01-01

    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...

  17. Imaging, Reconstruction, And Display Of Corneal Topography

    Science.gov (United States)

    Klyce, Stephen D.; Wilson, Steven E.

    1989-12-01

    The cornea is the major refractive element in the eye; even minor surface distortions can produce a significant reduction in visual acuity. Standard clinical methods used to evaluate corneal shape include keratometry, which assumes the cornea is ellipsoidal in shape, and photokeratoscopy, which images a series of concentric light rings on the corneal surface. These methods fail to document many of the corneal distortions that can degrade visual acuity. Algorithms have been developed to reconstruct the three dimensional shape of the cornea from keratoscope images, and to present these data in the clinically useful display of color-coded contour maps of corneal surface power. This approach has been implemented on a new generation video keratoscope system (Computed Anatomy, Inc.) with rapid automatic digitization of the image rings by a rule-based approach. The system has found clinical use in the early diagnosis of corneal shape anomalies such as keratoconus and contact lens-induced corneal warpage, in the evaluation of cataract and corneal transplant procedures, and in the assessment of corneal refractive surgical procedures. Currently, ray tracing techniques are being used to correlate corneal surface topography with potential visual acuity in an effort to more fully understand the tolerances of corneal shape consistent with good vision and to help determine the site of dysfunction in the visually impaired.

  18. Realization of an accelerator for environmental refreshment in case of soil; Dojo no kankyo sosei no tame no kasoku no jitsugen

    Energy Technology Data Exchange (ETDEWEB)

    Isogai, H.; Kawakami, T. [Electrotechnical Laboratories, Tsukuba (Japan)

    1996-10-27

    Techniques have been studied to accelerate, on a commercial scale, the natural refreshment effects which synthesize useful materials, such as compost and grape and amino acids from carbon dioxide, oxidized wastes and excretions exhausted by man. The symbiotic relationship between primeval bacteria and useful bacteria for Japanese traditional foods was investigated in 3 different experimental sections which were commonly composted; the first one consisting of composted soil, the second one provided with a layer (EM layer), in which these bacteria were densely cultured, on composted soil, and the third one with a common accelerator driven only by solar energy. A total of 9 seed potatoes were planted, 3 for each section, to monitor their growth. It is quantitatively confirmed that, when cultured in the third section, they grow roughly 3 times faster than in the first one. Sweetness can be sufficiently secured by the EM effect, because of sufficiently high ground temperature in early summer and an anaerobic atmosphere kept in the system. 6 refs., 2 figs.

  19. Logic and method of environmental refreshment and its effect measurement in soil; Kankyo sosei kasoku no riron to dojo deno koka no keisoku

    Energy Technology Data Exchange (ETDEWEB)

    Isogai, H.; Kawakami, T. [Electrotechnical Laboratory, Tsukuba (Japan)

    1997-05-31

    Primordial microbes that can function as photosynthetic catalysts are utilized in establishing a safe method for treating liquid or solid pollutant oxide wastes and household wastes and in activating vegetables` assimilation of gaseous wastes. A method for industrially accelerating their environment refreshing function and another method (the subject method) for measuring the effect are discussed. The technique of putting such methods to practical use is introduced, and the effectiveness of the said measuring is confirmed using empirically accepted rules. This method is based on the mycobiont/companion group method (EM method) that is advocated by Professor Higa of University of the Ryukyus. The group members form colonies with their symbiotic yeasts, lactic acid bacteria, actinomyces, leguminous bacteria, and nitrifying bacteria. Using this method, energy is industrially injected for acceleration and, simultaneously, the resultant effect is measured. The result of the measurement is next fed back so that the acceleration will be reflected. In this way, the effect of the primordial microbes that function as photosynthetic catalysts is confirmed and, secondarily, the basis is prepared on which element technologies will be developed to contribute to the enhancement of the multiplication of vegetables. 11 refs., 7 figs.

  20. Evaluation of High Resolution Rapid Refresh-Smoke (HRRR-Smoke) model products for a case study using surface PM2.5 observations

    Science.gov (United States)

    Deanes, L. N.; Ahmadov, R.; McKeen, S. A.; Manross, K.; Grell, G. A.; James, E.

    2016-12-01

    Wildfires are increasing in number and size in the western United States as climate change contributes to warmer and drier conditions in this region. These fires lead to poor air quality and diminished visibility. The High Resolution Rapid Refresh-Smoke modeling system (HRRR-Smoke) is designed to simulate fire emissions and smoke transport with high resolution. The model is based on the Weather Research and Forecasting model, coupled with chemistry (WRF-Chem) and uses fire detection data from the Visible Infrared and Imaging Radiometer Suite (VIIRS) satellite instrument to simulate wildfire emissions and their plume rise. HRRR-Smoke is used in both real-time applications and case studies. In this study, we evaluate the HRRR-Smoke for August 2015, during one of the worst wildfire seasons on record in the United States, by focusing on wildfires that occurred in the northwestern US. We compare HRRR-Smoke simulations with hourly fine particulate matter (PM2.5) observations from the Air Quality System (https://www.epa.gov/aqs) from multiple air quality monitoring sites in Washington state. PM2.5 data includes measurements from urban, suburban and remote sites in the state. We discuss the model performance in capturing large PM2.5 enhancements detected at surface sites due to wildfires. We present various statistical parameters to demonstrate HRRR-Smoke's performance in simulating surface PM2.5 levels.