WorldWideScience

Sample records for video graphic recorder

  1. Compression of mixed video and graphics images for TV systems

    Science.gov (United States)

    van der Schaar-Mitrea, Mihaela; de With, Peter H. N.

    1998-01-01

    The diversity in TV images has augmented with the increased application of computer graphics. In this paper we study z coding system that supports both the lossless coding of such graphics data and regular lossy video compression. The lossless coding techniques are based on runlength and arithmetical coding. For video compression, we introduce a simple block predictive coding technique featuring individual pixel access, so that it enables a gradual shift from lossless coding of graphics to the lossy coding of video. An overall bit rate control completes the system. Computer simulations show a very high quality with a compression factor between 2-3.

  2. Scan converting video tape recorder

    Science.gov (United States)

    Holt, N. I. (Inventor)

    1971-01-01

    A video tape recorder is disclosed of sufficient bandwidth to record monochrome television signals or standard NTSC field sequential color at current European and American standards. The system includes scan conversion means for instantaneous playback at scanning standards different from those at which the recording is being made.

  3. Video recording in movement disorders: practical issues.

    Science.gov (United States)

    Duker, Andrew P

    2013-10-01

    Video recording can provide a valuable and unique record of the physical examinations of patients with a movement disorder, capturing nuances of movement and supplementing the written medical record. In addition, video is an indispensable tool for education and research in movement disorders. Digital file recording and storage has largely replaced analog tape recording, increasing the ease of editing and storing video records. Practical issues to consider include hardware and software configurations, video format, the security and longevity of file storage, patient consent, and video protocols.

  4. Galatea ¬â€?An Interactive Computer Graphics System For Movie And Video Analysis

    Science.gov (United States)

    Potel, Michael J.; MacKay, Steven A.; Sayre, Richard E.

    1983-03-01

    Extracting quantitative information from movie film and video recordings has always been a difficult process. The Galatea motion analysis system represents an application of some powerful interactive computer graphics capabilities to this problem. A minicomputer is interfaced to a stop-motion projector, a data tablet, and real-time display equipment. An analyst views a film and uses the data tablet to track a moving position of interest. Simultaneously, a moving point is displayed in an animated computer graphics image that is synchronized with the film as it runs. Using a projection CRT and a series of mirrors, this image is superimposed on the film image on a large front screen. Thus, the graphics point lies on top of the point of interest in the film and moves with it at cine rates. All previously entered points can be displayed simultaneously in this way, which is extremely useful in checking the accuracy of the entries and in avoiding omission and duplication of points. Furthermore, the moving points can be connected into moving stick figures, so that such representations can be transcribed directly from film. There are many other tools in the system for entering outlines, measuring time intervals, and the like. The system is equivalent to "dynamic tracing paper" because it is used as though it were tracing paper that can keep up with running movie film. We have applied this system to a variety of problems in cell biology, cardiology, biomechanics, and anatomy. We have also extended the system using photogrammetric techniques to support entry of three-dimensional moving points from two (or more) films taken simultaneously from different perspective views. We are also presently constructing a second, lower-cost, microcomputer-based system for motion analysis in video, using digital graphics and video mixing to achieve the graphics overlay for any composite video source image.

  5. Multiple Generations on Video Tape Recorders.

    Science.gov (United States)

    Wiens, Jacob H.

    Helical scan video tape recorders were tested for their dubbing characteristics in order to make selection data available to media personnel. The equipment, two recorders of each type tested, was submitted by the manufacturers. The test was designed to produce quality evaluations for three generations of a single tape, thereby encompassing all…

  6. Laser Graphic Video Display using Silicon Scanning Mirrors with Vertical Comb Fingers

    Science.gov (United States)

    Lee, Jin-Ho; Ko, Young-Chul; Mun, Yong-Kweun; Choi, Byoung-So; Kim, Jong-Min; Jeon, Duk Young

    2002-09-01

    We acquired a two-dimensional (2D) laser vector graphic video image using 1500 μm× 1200 μm silicon scanning mirrors with vertical comb fingers. Vector image signals from the graphic board were applied to two scanning mirrors, and a SHG green laser was directly modulated to shape independent graphic images. These scanning mirrors were originally designed for laser raster video display as a galvanometric vertical scanner, and are controlled perfectly by the ramp waveform of 60 Hz with the duty cycle of 90%.

  7. Perancangan Video Motion Graphic Tentang Pentingnya Rating Dalam Video Game Bagi Orangtua

    OpenAIRE

    Nata, Vincent Ferian; Hagijanto, Andrian Dektisa; Christianna, Aniendya Christianna

    2016-01-01

    Video game merupakan media hiburan yang dapat dinikmati oleh berbagai kalangan masyarakat, tua atau muda. Video game memiliki konten yang bermacam – macam yang telah disesuaikan dengan target audiencenya. Tetapi terkadang anak – anak memainkan video game dengan konten yang tidak sesuai usia mereka, padahal konten dalam video game telah diatur melalui sistem rating. Hal ini karena kurangnya pengawasan dan pemahaman dari orangtua mengenai video game. Oleh karena itu penulis membuat sebuah multi...

  8. Graphic Depictions: Portrayals of Mental Illness in Video Games.

    Science.gov (United States)

    Shapiro, Samuel; Rotter, Merrill

    2016-11-01

    Although studies have examined portrayals of mental illness in the mass media, little attention has been paid to such portrayals in video games. In this descriptive study, the fifty highest-selling video games in each year from 2011 to 2013 were surveyed through application of search terms to the Wikia search engine, with subsequent review of relevant footage on YouTube. Depiction categories were then assigned based on the extent of portrayal and qualitative characteristics compared against mental illness stereotypes in cinema. Twenty-three of the 96 surveyed games depicted at least one character with mental illness. Forty-two characters were identified as portraying mental illness, with most characters classified under a "homicidal maniac" stereotype, although many characters did not clearly reflect cinema stereotypes and were subcategorized based on the shared traits. Video games contain frequent and varied portrayals of mental illness, with depictions most commonly linking mental illness to dangerous and violent behaviors. © 2016 American Academy of Forensic Sciences.

  9. VQone MATLAB toolbox: A graphical experiment builder for image and video quality evaluations: VQone MATLAB toolbox.

    Science.gov (United States)

    Nuutinen, Mikko; Virtanen, Toni; Rummukainen, Olli; Häkkinen, Jukka

    2016-03-01

    This article presents VQone, a graphical experiment builder, written as a MATLAB toolbox, developed for image and video quality ratings. VQone contains the main elements needed for the subjective image and video quality rating process. This includes building and conducting experiments and data analysis. All functions can be controlled through graphical user interfaces. The experiment builder includes many standardized image and video quality rating methods. Moreover, it enables the creation of new methods or modified versions from standard methods. VQone is distributed free of charge under the terms of the GNU general public license and allows code modifications to be made so that the program's functions can be adjusted according to a user's requirements. VQone is available for download from the project page (http://www.helsinki.fi/psychology/groups/visualcognition/).

  10. Implications of the law on video recording in clinical practice

    NARCIS (Netherlands)

    Henken, K.R.; Jansen, F.W.; Klein, J.; Stassen, L.P.S.; Dankelman, J.; Van den Dobbelsteen, J.J.

    2012-01-01

    Background Technological developments allow for a variety of applications of video recording in health care, including endoscopic procedures. Although the value of video registration is recognized, medicolegal concerns regarding the privacy of patients and professionals are growing. A clear

  11. Who views graphic media and why? A mixed-methods study of the ISIS beheading videos

    OpenAIRE

    Redmond, Sarah Ann

    2017-01-01

    In the wake of large-scale disasters, many individuals seek out graphic news coverage of the event, but prior research has not examined who these individuals are and what motivates them to do so. The present study used a mixed-methods design to identify who seeks out graphic images, the correlates of viewing this coverage, and motivations for doing so by looking at individuals who watched a beheading video created by the terrorist group ISIS (Islamic State of Iraq and Syria). These questions ...

  12. Educational Video Recording and Editing for The Hand Surgeon

    OpenAIRE

    Rehim, Shady A.; Chung, Kevin C.

    2015-01-01

    Digital video recordings are increasingly used across various medical and surgical disciplines including hand surgery for documentation of patient care, resident education, scientific presentations and publications. In recent years, the introduction of sophisticated computer hardware and software technology has simplified the process of digital video production and improved means of disseminating large digital data files. However, the creation of high quality surgical video footage requires b...

  13. Clients experience of video recordings of their psychotherapy

    DEFF Research Database (Denmark)

    Jacobsen, Claus Haugaard; Jensen, Karen Boelt; Madsen, Ninna Skov

    the current relatively widespread use video one finds only a very limited numbers empirical study of how these recordings is experienced by the clients. Aim: After a brief discussion of the pro and cons of the use of video recordings this paper presents a qualitative, explorative study of clients’ experiences......Background: Due to the development of technologies and the low costs video recording of psychotherapy sessions have gained ground in training and supervision. While some praise the advantages others decline to use this technological aid for ethical, theoretical or clinical reasons. Despite...

  14. Preserving color fidelity for display devices using scalable memory compression architecture for text, graphics, and video

    Science.gov (United States)

    Lebowsky, Fritz; Nicolas, Marina

    2014-01-01

    High-end monitors and TVs based on LCD technology continue to increase their native display resolution to 4k by 2k and beyond. Subsequently, uncompressed pixel amplitude processing becomes costly not only when transmitting over cable or wireless communication channels, but also when processing with array processor architectures. For motion video content, spatial preprocessing from YCbCr 444 to YCbCr 420 is widely accepted. However, due to spatial low pass filtering in horizontal and vertical direction, quality and readability of small text and graphics content is heavily compromised when color contrast is high in chrominance channels. On the other hand, straight forward YCbCr 444 compression based on mathematical error coding schemes quite often lacks optimal adaptation to visually significant image content. We present a block-based memory compression architecture for text, graphics, and video enabling multidimensional error minimization with context sensitive control of visually noticeable artifacts. As a result of analyzing image context locally, the number of operations per pixel can be significantly reduced, especially when implemented on array processor architectures. A comparative analysis based on some competitive solutions highlights the effectiveness of our approach, identifies its current limitations with regard to high quality color rendering, and illustrates remaining visual artifacts.

  15. Video recording of ophthalmic surgery--ethical and legal considerations.

    Science.gov (United States)

    Turnbull, Andrew M J; Emsley, Elizabeth S

    2014-01-01

    Video documenting is increasingly used in ophthalmic training and research, with many ophthalmologists routinely recording their surgical cases. Although this modality represents an excellent means of improving technique and advancing knowledge, there are major ethical and legal considerations with its use. Informed consent to record is required in most situations. Patients should be advised of any risk of identification and the purpose of the recording. Systems should be in place to deal with issues such as data storage, withdrawal of consent, and patients requesting copies of their recording. Privacy and security of neither patients nor health care professionals should be compromised. Ownership and distribution of video recordings, the potential for their use in medical litigation, the ethics and legality of editing and the impact on surgeon performance are other factors to consider. Although video recording of ophthalmic surgery is useful and technically simple to accomplish, patient safety and welfare must always remain paramount. Copyright © 2014 Elsevier Inc. All rights reserved.

  16. Educational video recording and editing for the hand surgeon.

    Science.gov (United States)

    Rehim, Shady A; Chung, Kevin C

    2015-05-01

    Digital video recordings are increasingly used across various medical and surgical disciplines including hand surgery for documentation of patient care, resident education, scientific presentations, and publications. In recent years, the introduction of sophisticated computer hardware and software technology has simplified the process of digital video production and improved means of disseminating large digital data files. However, the creation of high-quality surgical video footage requires a basic understanding of key technical considerations, together with creativity and sound aesthetic judgment of the videographer. In this article we outline the practical steps involved in equipment preparation, video recording, editing, and archiving, as well as guidance for the choice of suitable hardware and software equipment. Copyright © 2015 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

  17. [Video Instruction for Synchronous Video Recording of Mimic Movement of Patients with Facial Palsy].

    Science.gov (United States)

    Schaede, Rebecca Anna; Volk, Gerd Fabian; Modersohn, Luise; Barth, Jodi Maron; Denzler, Joachim; Guntinas-Lichius, Orlando

    2017-12-01

    Background Photografy and video are necessary to record the severity of a facial palsy or to allow offline grading with a grading system. There is no international standard for the video recording urgently needed to allow a standardized comparison of different patient cohorts. Methods A video instruction was developed. The instruction was shown to the patient and presents several mimic movements. At the same time the patient is recorded while repeating the presented movement using commercial hardware. Facial movements were selected in such a way that it was afterwards possible to evaluate the recordings with standard grading systems (House-Brackmann, Sunnybrook, Stennert, Yanagihara) or even with (semi)automatic software. For quality control, the patients evaluated the instruction using a questionnaire. Results The video instruction takes 11 min and 05 and is divided in 3 parts: 1) Explanation of the procedure; 2) Foreplay and recreating of the facial movements; 3) Repeating of sentences to analyze the communication skills. So far 13 healthy subjects and 10 patients with acute or chronic facial palsy were recorded. All recordings could be assessed by the above mentioned grading systems. The instruction was rated as well explaining and easy to follow by healthy persons and patients. Discussion There is now a video instruction available for standardized recording of facial movement. This instruction is recommended for use in clinical routine and in clinical trials. This will allow a standardized comparison of patients within Germany and international patient cohorts. © Georg Thieme Verlag KG Stuttgart · New York.

  18. Recorded peer video chat as a research and development tool

    DEFF Research Database (Denmark)

    Otrel-Cass, Kathrin; Cowie, Bronwen

    2016-01-01

    When practising teachers take time to exchange their experiences and reflect on their teaching realities as critical friends, they add meaning and depth to educational research. When peer talk is facilitated through video chat platforms, teachers can meet (virtually) face to face even when...... recordings were transcribed and used to prompt further discussion. The recording of the video chat meetings provided an opportunity for researchers to listen in and follow up on points they felt needed further unpacking or clarification. The recorded peer video chat conversations provided an additional...... opportunity to stimulate and support teacher participants in a process of critical analysis and reflection on practice. The discussions themselves were empowering because in the absence of the researcher, the teachers, in negotiation with peers, choose what is important enough to them to take time to discuss....

  19. Advancement of thyroid surgery video recording: A comparison between two full HD head mounted video cameras.

    Science.gov (United States)

    Ortensi, Andrea; Panunzi, Andrea; Trombetta, Silvia; Cattaneo, Alberto; Sorrenti, Salvatore; D'Orazi, Valerio

    2017-05-01

    The aim of this study was to test two different video cameras and recording systems used in thyroid surgery in our Department. This is meant to be an attempt to record the real point of view of the magnified vision of surgeon, so as to make the viewer aware of the difference with the naked eye vision. In this retrospective study, we recorded and compared twenty thyroidectomies performed using loupes magnification and microsurgical technique: ten were recorded with GoPro® 4 Session action cam (commercially available) and ten with our new prototype of head mounted video camera. Settings were selected before surgery for both cameras. The recording time is about from 1 to 2 h for GoPro® and from 3 to 5 h for our prototype. The average time of preparation to fit the camera on the surgeon's head and set the functionality is about 5 min for GoPro® and 7-8 min for the prototype, mostly due to HDMI wiring cable. Videos recorded with the prototype require no further editing, which is mandatory for videos recorded with GoPro® to highlight the surgical details. the present study showed that our prototype of video camera, compared with GoPro® 4 Session, guarantees best results in terms of surgical video recording quality, provides to the viewer the exact perspective of the microsurgeon and shows accurately his magnified view through the loupes in thyroid surgery. These recordings are surgical aids for teaching and education and might be a method of self-analysis of surgical technique. Copyright © 2017 IJS Publishing Group Ltd. Published by Elsevier Ltd. All rights reserved.

  20. Video News release: LHC Energy Record

    CERN Multimedia

    CERN video productions

    2009-01-01

    Geneva, 30 November 2009. CERN1’s Large Hadron Collider has today become the world’s highest energy particle accelerator, having accelerated its twin beams of protons to an energy of 1.18 TeV in the early hours of the morning. This exceeds the previous world record of 0.98 TeV, which had been held by the US Fermi National Accelerator Laboratory’s Tevatron collider since 2001. It marks another important milestone on the road to first physics at the LHC in 2010. “We are still coming to terms with just how smoothly the LHC commissioning is going,” said CERN Director General Rolf Heuer. “It is fantastic. However, we are continuing to take it step by step, and there is still a lot to do before we start physics in 2010. I’m keeping my champagne on ice until then.” These developments come just 10 days after the LHC restart, demonstrating the excellent performance of the machine. First beams were injected into the LHC on Friday 20 November. Over the following days, the machine’s operators circulated...

  1. Compression evaluation of surgery video recordings retaining diagnostic credibility (compression evaluation of surgery video)

    Science.gov (United States)

    Duplaga, M.; Leszczuk, M. I.; Papir, Z.; Przelaskowski, A.

    2008-12-01

    Wider dissemination of medical digital video libraries is affected by two correlated factors, resource effective content compression that directly influences its diagnostic credibility. It has been proved that it is possible to meet these contradictory requirements halfway for long-lasting and low motion surgery recordings at compression ratios close to 100 (bronchoscopic procedures were a case study investigated). As the main supporting assumption, it has been accepted that the content can be compressed as far as clinicians are not able to sense a loss of video diagnostic fidelity (a visually lossless compression). Different market codecs were inspected by means of the combined subjective and objective tests toward their usability in medical video libraries. Subjective tests involved a panel of clinicians who had to classify compressed bronchoscopic video content according to its quality under the bubble sort algorithm. For objective tests, two metrics (hybrid vector measure and hosaka Plots) were calculated frame by frame and averaged over a whole sequence.

  2. Graphics to H.264 video encoding for 3D scene representation and interaction on mobile devices using region of interest

    Science.gov (United States)

    Le, Minh Tuan; Nguyen, Congdu; Yoon, Dae-Il; Jung, Eun Ku; Jia, Jie; Kim, Hae-Kwang

    2007-12-01

    In this paper, we propose a method of 3D graphics to video encoding and streaming that are embedded into a remote interactive 3D visualization system for rapidly representing a 3D scene on mobile devices without having to download it from the server. In particular, a 3D graphics to video framework is presented that increases the visual quality of regions of interest (ROI) of the video by performing more bit allocation to ROI during H.264 video encoding. The ROI are identified by projection 3D objects to a 2D plane during rasterization. The system offers users to navigate the 3D scene and interact with objects of interests for querying their descriptions. We developed an adaptive media streaming server that can provide an adaptive video stream in term of object-based quality to the client according to the user's preferences and the variation of network bandwidth. Results show that by doing ROI mode selection, PSNR of test sample slightly change while visual quality of objects increases evidently.

  3. Video Recording in Ethnographic SLA Research: Some Issues of Validity in Data Collection.

    Science.gov (United States)

    DuFon, Margaret A.

    2002-01-01

    Reviews visual anthropology, educational anthropology, and ethnographic filmmaking literature on questions concerning collection of valid video recorded data in the second language context. Examines h an interaction should be video recorded, who should be video recorded, and who should do the recording. Examples illustrate the kinds of research…

  4. Objective Video Quality Assessment of Direct Recording and Datavideo HDR-40 Recording System

    Directory of Open Access Journals (Sweden)

    Nofia Andreana

    2016-10-01

    Full Text Available Digital Video Recorder (DVR is a digital video recorder with hard drive storage media. When the capacity of the hard disk runs out. It will provide information to users and if there is no response, it will be overwritten automatically and the data will be lost. The main focus of this paper is to enable recording directly connected to a computer editor. The output of both systems (DVR and Direct Recording will be compared with an objective assessment using the Mean Square Error (MSE and Peak Signal to Noise Ratio (PSNR parameter. The results showed that the average value of MSE Direct Recording dB 797.8556108, 137.4346100 DVR MSE dB and the average value of PSNR Direct Recording and DVR PSNR dB 19.5942333 27.0914258 dB. This indicates that the DVR has a much better output quality than Direct Recording.

  5. Hardware adaptation layer for MPEG video recording on a helical scan-based digital data recorder

    Science.gov (United States)

    de Ridder, Ad C.; Kindt, S.; Frimout, Emmanuel D.; Biemond, Jan; Lagendijk, Reginald L.

    1996-03-01

    The forthcoming introduction of helical scan digital data tape recorders with high access bandwidth and large capacity will facilitate the recording and retrieval of a wide variety of multimedia information from different sources, such as computer data and digital audio and video. For the compression of digital audio and video, the MPEG standard has internationally been accepted. Although helical scan tape recorders can store and playback MPEG compressed signals transparently they are not well suited for carrying out special playback modes, in particular fast forward and fast reverse. Only random portions of a original MPEG bitstream are recovered on fast playback. Unfortunately these shreds of information cannot be interpreted by a standard MPEG decoder, due to loss of synchronization and missing reference pictures. In the EC-sponsored RACE project DART (Digital Data Recorder Terminal) the possibilities for recording and fast playback of MPEG video on a helical scan recorder have been investigated. In the approach we present in this paper, we assume that not transcoding is carried out on the incoming bitstream at recording time, nor that any additional information is recorded. To use the shreds of information for the reconstruction of interpretable pictures, a bitstream validator has been developed to achieve conformance to the MPEG-2 syntax during fast playback. The concept has been validated by realizing hardware demonstrators that connect to a prototype helical scan digital data tape recorder.

  6. Audiovisual presentation of video-recorded stimuli at a high frame rate

    National Research Council Canada - National Science Library

    Lidestam, Björn

    2014-01-01

    .... Methods for accomplishing this include recording audio and video separately using an exact synchronization signal, editing the recordings and finding exact synchronization points, and presenting...

  7. Cell Phone Video Recording Feature as a Language Learning Tool: A Case Study

    Science.gov (United States)

    Gromik, Nicolas A.

    2012-01-01

    This paper reports on a case study conducted at a Japanese national university. Nine participants used the video recording feature on their cell phones to produce weekly video productions. The task required that participants produce one 30-second video on a teacher-selected topic. Observations revealed the process of video creation with a cell…

  8. Scalable Adaptive Graphics Environment (SAGE) Software for the Visualization of Large Data Sets on a Video Wall

    Science.gov (United States)

    Jedlovec, G.; Srikishen, J.; Edwards, R.; Cross, D.; Welch, J. D.; Smith, M. R.

    2013-12-01

    The use of collaborative scientific visualization systems for the analysis, visualization, and sharing of 'big data' available from new high resolution remote sensing satellite sensors or four-dimensional numerical model simulations is propelling the wider adoption of ultra-resolution tiled display walls interconnected by high speed networks. These systems require a globally connected and well-integrated operating environment that provides persistent visualization and collaboration services. This abstract and subsequent presentation describes a new collaborative visualization system installed for NASA's Short-term Prediction Research and Transition (SPoRT) program at Marshall Space Flight Center and its use for Earth science applications. The system consists of a 3 x 4 array of 1920 x 1080 pixel thin bezel video monitors mounted on a wall in a scientific collaboration lab. The monitors are physically and virtually integrated into a 14' x 7' for video display. The display of scientific data on the video wall is controlled by a single Alienware Aurora PC with a 2nd Generation Intel Core 4.1 GHz processor, 32 GB memory, and an AMD Fire Pro W600 video card with 6 mini display port connections. Six mini display-to-dual DVI cables are used to connect the 12 individual video monitors. The open source Scalable Adaptive Graphics Environment (SAGE) windowing and media control framework, running on top of the Ubuntu 12 Linux operating system, allows several users to simultaneously control the display and storage of high resolution still and moving graphics in a variety of formats, on tiled display walls of any size. The Ubuntu operating system supports the open source Scalable Adaptive Graphics Environment (SAGE) software which provides a common environment, or framework, enabling its users to access, display and share a variety of data-intensive information. This information can be digital-cinema animations, high-resolution images, high-definition video

  9. Scalable Adaptive Graphics Environment (SAGE) Software for the Visualization of Large Data Sets on a Video Wall

    Science.gov (United States)

    Jedlovec, Gary; Srikishen, Jayanthi; Edwards, Rita; Cross, David; Welch, Jon; Smith, Matt

    2013-01-01

    The use of collaborative scientific visualization systems for the analysis, visualization, and sharing of "big data" available from new high resolution remote sensing satellite sensors or four-dimensional numerical model simulations is propelling the wider adoption of ultra-resolution tiled display walls interconnected by high speed networks. These systems require a globally connected and well-integrated operating environment that provides persistent visualization and collaboration services. This abstract and subsequent presentation describes a new collaborative visualization system installed for NASA's Shortterm Prediction Research and Transition (SPoRT) program at Marshall Space Flight Center and its use for Earth science applications. The system consists of a 3 x 4 array of 1920 x 1080 pixel thin bezel video monitors mounted on a wall in a scientific collaboration lab. The monitors are physically and virtually integrated into a 14' x 7' for video display. The display of scientific data on the video wall is controlled by a single Alienware Aurora PC with a 2nd Generation Intel Core 4.1 GHz processor, 32 GB memory, and an AMD Fire Pro W600 video card with 6 mini display port connections. Six mini display-to-dual DVI cables are used to connect the 12 individual video monitors. The open source Scalable Adaptive Graphics Environment (SAGE) windowing and media control framework, running on top of the Ubuntu 12 Linux operating system, allows several users to simultaneously control the display and storage of high resolution still and moving graphics in a variety of formats, on tiled display walls of any size. The Ubuntu operating system supports the open source Scalable Adaptive Graphics Environment (SAGE) software which provides a common environment, or framework, enabling its users to access, display and share a variety of data-intensive information. This information can be digital-cinema animations, high-resolution images, high-definition video

  10. High Quality Real-Time Video with Scanning Electron Microscope Using Total Variation Algorithm on a Graphics Processing Unit

    Science.gov (United States)

    Ouarti, Nizar; Sauvet, Bruno; Régnier, Stéphane

    2012-04-01

    The scanning electron microscope (SEM) is usually dedicated to taking a picture of micro-nanoscopic objects. In the present study, we wondered whether a SEM can be converted as a real-time video display. To this end, we designed a new methodology. We use the slow mode of the SEM to acquire a high quality reference image that can then be used to estimate the optimal parameters that regularize the signal for a given method. Here, we employ Total Variation, a method which minimizes the noise and regularizes the image. An optimal lagrangian multiplier can be computed that regularizes the image efficiently. We showed that a limited number of iterations for Total Variation algorithm can lead to an acceptable quality of regularization. This algorithm is parallel and deployed on a Graphics Processing Unit to obtain a real-time high quality video with a SEM. It opens the possibility of a real-time interaction at micro-nanoscales.

  11. 17 CFR 232.304 - Graphic, image, audio and video material.

    Science.gov (United States)

    2010-04-01

    ... delivered to investors and others is deemed part of the electronic filing and subject to the civil liability..., image, audio or video material, they are not subject to the civil liability and anti-fraud provisions of...

  12. Video-EEG recording: a four-year clinical audit.

    LENUS (Irish Health Repository)

    O'Rourke, K

    2012-02-03

    In the setting of a regional neurological unit without an epilepsy surgery service as in our case, video-EEG telemetry is undertaken for three main reasons; to investigate whether frequent paroxysmal events represent seizures when there is clinical doubt, to attempt anatomical localization of partial seizures when standard EEG is unhelpful, and to attempt to confirm that seizures are non-epileptic when this is suspected. A clinical audit of all telemetry performed over a four-year period was carried out, in order to determine the clinical utility of this aspect of the service and to determine means of improving effectiveness in the unit. Analysis of the data showed a high rate of negative studies with no attacks recorded. Of the positive studies approximately 50% showed non-epileptic attacks. Strategies for improving the rate of positive investigations are discussed.

  13. EEG in the classroom: Synchronised neural recordings during video presentation

    Science.gov (United States)

    Poulsen, Andreas Trier; Kamronn, Simon; Dmochowski, Jacek; Parra, Lucas C.; Hansen, Lars Kai

    2017-03-01

    We performed simultaneous recordings of electroencephalography (EEG) from multiple students in a classroom, and measured the inter-subject correlation (ISC) of activity evoked by a common video stimulus. The neural reliability, as quantified by ISC, has been linked to engagement and attentional modulation in earlier studies that used high-grade equipment in laboratory settings. Here we reproduce many of the results from these studies using portable low-cost equipment, focusing on the robustness of using ISC for subjects experiencing naturalistic stimuli. The present data shows that stimulus-evoked neural responses, known to be modulated by attention, can be tracked for groups of students with synchronized EEG acquisition. This is a step towards real-time inference of engagement in the classroom.

  14. The impact of cervical cancer education for deaf women using a video educational tool employing American sign language, open captioning, and graphics.

    Science.gov (United States)

    Choe, Sun; Lim, Rod Seung-Hwan; Clark, Karen; Wang, Regina; Branz, Patricia; Sadler, Georgia Robins

    2009-01-01

    Deaf women encounter barriers to accessing cancer information. In this study, we evaluated whether deaf women's knowledge could be increased by viewing a graphically enriched, American Sign Language (ASL) cervical cancer education video. A blind, randomized trial evaluated knowledge gain and retention. Deaf women (n = 130) completed questionnaires before, after, and 2 months after viewing the video. With only a single viewing of the in-depth video, the experimental group gained and retained significantly more cancer knowledge than the control group. Giving deaf women access to the ASL cervical cancer education video (http://cancer.ucsd.edu/deafinfo) significantly increased their knowledge of cervical cancer.

  15. The Impact of Cervical Cancer Education for Deaf Women Using a Video Educational Tool Employing American Sign Language, Open Captioning, and Graphics

    Science.gov (United States)

    Choe, Sun; Lim, Rod Seung-Hwan; Clark, Karen; Wang, Regina; Branz, Patricia; Sadler, Georgia Robins

    2013-01-01

    Background Deaf women encounter barriers to accessing cancer information. In this study, we evaluated whether deaf women's knowledge could be increased by viewing a graphically enriched, American Sign Language (ASL) cervical cancer education video. Methods A blind, randomized trial evaluated knowledge gain and retention. Deaf women (n = 130) completed questionnaires before, after, and 2 months after viewing the video. Results With only a single viewing of the in-depth video, the experimental group gained and retained significantly more cancer knowledge than the control group. Conclusions Giving deaf women access to the ASL cervical cancer education video (http://cancer.ucsd.edu/deafinfo) significantly increased their knowledge of cervical cancer. PMID:19259859

  16. Mobile, portable lightweight wireless video recording solutions for homeland security, defense, and law enforcement applications

    Science.gov (United States)

    Sandy, Matt; Goldburt, Tim; Carapezza, Edward M.

    2015-05-01

    It is desirable for executive officers of law enforcement agencies and other executive officers in homeland security and defense, as well as first responders, to have some basic information about the latest trend on mobile, portable lightweight wireless video recording solutions available on the market. This paper reviews and discusses a number of studies on the use and effectiveness of wireless video recording solutions. It provides insights into the features of wearable video recording devices that offer excellent applications for the category of security agencies listed in this paper. It also provides answers to key questions such as: how to determine the type of video recording solutions most suitable for the needs of your agency, the essential features to look for when selecting a device for your video needs, and the privacy issues involved with wearable video recording devices.

  17. Accelerating Wavelet-Based Video Coding on Graphics Hardware using CUDA

    NARCIS (Netherlands)

    Laan, Wladimir J. van der; Roerdink, Jos B.T.M.; Jalba, Andrei C.; Zinterhof, P; Loncaric, S; Uhl, A; Carini, A

    2009-01-01

    The Discrete Wavelet Transform (DWT) has a wide range of applications from signal processing to video and image compression. This transform, by means of the lifting scheme, can be performed in a memory mid computation efficient way on modern, programmable GPUs, which can be regarded as massively

  18. GRAPHICS PROCESSING UNITS: MORE THAN THE PATHWAY TO REALISTIC VIDEO-GAMES

    Directory of Open Access Journals (Sweden)

    CARLOS TRUJILLO

    2011-01-01

    Full Text Available El amplio mercado de los juegos de video ha impulsado un acelerado progreso del hardware y software orientado a lograr ambientes de juego de mayor realidad. Entre estos desarrollos se cuentan las unidades de procesamiento gráfico (GPU, cuyo objetivo es liberar la unidad de procesamiento principal (CPU de los elaborados cómputos que proporcionan "vida" a los juegos de video. Para lograrlo, las GPUs son equipadas con múltiples núcleos de procesamiento operando en paralelo, lo cual permite utilizarlas en tareas mucho más diversas que el desarrollo de juegos de video. En este artículo se presenta una breve descripción de las características de compute unified device architecture (CUDA TM, una arquitectura de cómputo paralelo en GPUs. Se presenta una aplicación de esta arquitectura en la reconstrucción numérica de hologramas, para la cual se reporta una aceleración de 11X con respecto al desempeño alcanzado en una CPU.

  19. Examining the Effectiveness of Digital Video Recordings on Oral Performance of EFL Learners

    Science.gov (United States)

    Göktürk, Nazlinur

    2016-01-01

    This study reports the results of an action-based study conducted in an EFL class to examine whether digital video recordings would contribute to the enhancement of EFL learners' oral fluency skills. It also investigates the learners' perceptions of the use of digital video recordings in a speaking class. 10 Turkish EFL learners participated in…

  20. Video Recorded Feedback for Self Regulation of Prospective Music Teachers in Piano Lessons

    Science.gov (United States)

    Deniz, Jale

    2012-01-01

    The main purpose of the study is enabling the prospective teachers to make self-regulations by video recording their piano performances with their instructors and feedbacks of their instructors and detect the views of specific students concerning these video records. The research was carried out during 2008-2009 academic year in Marmara…

  1. Minding the Music: Neuroscience, Video Recording, and the Pianist

    Science.gov (United States)

    Schlosser, Milton

    2011-01-01

    Research in music education asserts that video review by performers facilitates self-directed learning and transforms performing. Yet, certain videos may be traumatic for musicians to view; those who perceive themselves as failing or experience performance-related failures are prone to feelings of distress and sadness that can negatively affect…

  2. Coding the Complexity of Activity in Video Recordings

    DEFF Research Database (Denmark)

    Harter, Christopher Daniel; Otrel-Cass, Kathrin

    2017-01-01

    This paper presents a theoretical approach to coding and analyzing video data on human interaction and activity, using principles found in cultural historical activity theory. The systematic classification or coding of information contained in video data on activity can be arduous and time consum...

  3. [Influence of the recording interval and a graphic organizer on the writing process/product and on other psychological variables].

    Science.gov (United States)

    García Sánchez, Jesús N; Rodríguez Pérez, Celestino

    2007-05-01

    An experimental study of the influence of the recording interval and a graphic organizer on the processes of writing composition and on the final product is presented. We studied 326 participants, age 10 to 16 years old, by means of a nested design. Two groups were compared: one group was aided in the writing process with a graphic organizer and the other was not. Each group was subdivided into two further groups: one with a mean recording interval of 45 seconds and the other with approximately 90 seconds recording interval in a writing log. The results showed that the group aided by a graphic organizer obtained better results both in processes and writing product, and that the groups assessed with an average interval of 45 seconds obtained worse results. Implications for educational practice are discussed, and limitations and future perspectives are commented on.

  4. Analysis of simulated angiographic procedures: part 1--capture and presentation of audio and video recordings.

    Science.gov (United States)

    Duncan, James R; Glaiberman, Craig B

    2006-12-01

    To assess different methods of recording angiographic simulations and to determine how such recordings might be used for training and research. Two commercially available high-fidelity angiography simulations, the Mentice Vascular Interventional Simulation Trainer and the Simbionix AngioMentor, were used for data collection. Video and audio records of simulated procedures were created by different methods, including software-based screen capture, video splitters and converters, and external cameras. Recording parameters were varied, and the recordings were transferred to computer workstations for postprocessing and presentation. The information displayed on the simulators' computer screens could be captured by each method. Although screen-capture software provided the highest resolution, workflow considerations favored a hardware-based solution that duplicated the video signal and recorded the data stream(s) at lower resolutions. Additional video and audio recording devices were used to monitor the angiographer's actions during the simulated procedures. The multiple audio and video files were synchronized and composited with personal computers equipped with commercially available video editing software. Depending on the needs of the intended audience, the resulting files could be distributed and displayed at full or reduced resolutions. The capture, editing, presentation, and distribution of synchronized multichannel audio and video recordings holds great promise for angiography training and simulation research. To achieve this potential, technical challenges will need to be met, and content will need to be tailored to suit the needs of trainees and researchers.

  5. Seizure semiology inferred from clinical descriptions and from video recordings. How accurate are they?

    Science.gov (United States)

    Beniczky, Simona Alexandra; Fogarasi, András; Neufeld, Miri; Andersen, Noémi Becser; Wolf, Peter; van Emde Boas, Walter; Beniczky, Sándor

    2012-06-01

    To assess how accurate the interpretation of seizure semiology is when inferred from witnessed seizure descriptions and from video recordings, five epileptologists analyzed 41 seizures from 30 consecutive patients who had clinical episodes in the epilepsy monitoring unit. For each clinical episode, the consensus conclusions (at least 3 identical choices) based on the descriptions and, separately, of the video recordings were compared with the clinical conclusions at the end of the diagnostic work-up, including data from the video-EEG recordings (reference standard). Consensus conclusion was reached in significantly more cases based on the interpretation of video recordings (88%) than on the descriptions (66%), and the overall accuracy was higher for the video recordings (85%) than for the descriptions (54%). When consensus was reached, the concordance with the reference standard was substantial for the descriptions (k=0.67) and almost perfect for the video recordings (k=0.95). Video recordings significantly increase the accuracy of seizure interpretation. Copyright © 2012 Elsevier Inc. All rights reserved.

  6. An innovative technique for recording picture-in-picture ultrasound videos.

    Science.gov (United States)

    Rajasekaran, Sathish; Finnoff, Jonathan T

    2013-08-01

    Many ultrasound educational products and ultrasound researchers present diagnostic and interventional ultrasound information using picture-in-picture videos, which simultaneously show the ultrasound image and transducer and patient positions. Traditional techniques for creating picture-in-picture videos are expensive, nonportable, or time-consuming. This article describes an inexpensive, simple, and portable way of creating picture-in-picture ultrasound videos. This technique uses a laptop computer with a video capture device to acquire the ultrasound feed. Simultaneously, a webcam captures a live video feed of the transducer and patient position and live audio. Both sources are streamed onto the computer screen and recorded by screen capture software. This technique makes the process of recording picture-in-picture ultrasound videos more accessible for ultrasound educators and researchers for use in their presentations or publications.

  7. The influence of video recordings on beginning therapist’s learning in psychotherapy training

    DEFF Research Database (Denmark)

    Jacobsen, Claus Haugaard; Olesen, Mette Kirk; Kløve, Astrid

    2010-01-01

    the current relatively widespread use of video, one finds only a very limited number of empirical studies on how these recordings specifically influence the learning process of the beginning therapist. Aim: After a brief discussion of the pro and cons of the use of video recordings this paper presents......Background: Due to the development of technologies and the low costs, video recording of psychotherapy sessions have gained ground in training and supervision. While some praise the advantages others decline to use this technological aid for ethical, theoretical or clinical reasons. Despite...

  8. The influence of video recordings on beginning therapists’ learning in psychotherapy training

    DEFF Research Database (Denmark)

    Jacobsen, Claus Haugaard; Olesen, Mette Kirk; Kløve, Astrid

    the current relatively widespread use of video, one finds only a very limited number of empirical studies on how these recordings specifically influence the learning process of the beginning therapist. Aim: After a brief discussion of the pro and cons of the use of video recordings this paper presents......Background: Due to the development of technologies and the low costs, video recording of psychotherapy sessions have gained ground in training and supervision. While some praise the advantages others decline to use this technological aid for ethical, theoretical or clinical reasons. Despite...

  9. Accomplished Teaching: Using Video Recorded Micro-Teaching Discourse to Build Candidate Teaching Competencies

    Science.gov (United States)

    Shaw, Denise

    2017-01-01

    Objectives of this articles are to present the findings of video recorded communication between teacher candidates and peers during simulated micro-teaching. The micro-teaching activity in its entirety combines conventional face-to-face interaction, video micro-teaching, peer and instructor feedback, alongside self-reflection to undergird the…

  10. Video-recorded accidents conflicts and road user behaviour: A step forward in traffic safety research

    NARCIS (Netherlands)

    Horst, A.R.A. van der

    2008-01-01

    TNO Human Factors conducted long-term video observations to collect data on the pre-crash phase of real accidents (what exactly happened just before the collision?). The video recordings of collisions were used to evaluate and validate the safety value of indepth accident analyses, road scene

  11. Video-recorded accidents conflicts and road user behaviour: A step forward in traffic safety research

    NARCIS (Netherlands)

    Horst, A.R.A. van der

    2013-01-01

    TNO conducted long-term video observations to collect data on the pre-crash phase of real accidents (what exactly happened just before the collision?). The video recordings of collisions were used to evaluate and validate the safety value of in-depth accident analyses, road scene analyses, and

  12. Onboard Systems Record Unique Videos of Space Missions

    Science.gov (United States)

    2010-01-01

    Ecliptic Enterprises Corporation, headquartered in Pasadena, California, provided onboard video systems for rocket and space shuttle launches before it was tasked by Ames Research Center to craft the Data Handling Unit that would control sensor instruments onboard the Lunar Crater Observation and Sensing Satellite (LCROSS) spacecraft. The technological capabilities the company acquired on this project, as well as those gained developing a high-speed video system for monitoring the parachute deployments for the Orion Pad Abort Test Program at Dryden Flight Research Center, have enabled the company to offer high-speed and high-definition video for geosynchronous satellites and commercial space missions, providing remarkable footage that both informs engineers and inspires the imagination of the general public.

  13. Graphics processing unit accelerated optical coherence tomography processing at megahertz axial scan rate and high resolution video rate volumetric rendering.

    Science.gov (United States)

    Jian, Yifan; Wong, Kevin; Sarunic, Marinko V

    2013-02-01

    In this report, we describe how to highly optimize a computer unified device architecture based platform to perform real-time processing of optical coherence tomography interferometric data and three-dimensional (3-D) volumetric rendering using a commercially available, cost-effective, graphics processing unit (GPU). The maximum complete attainable axial scan processing rate, including memory transfer and displaying B-scan frame, was 2.24 MHz for 16 bits pixel depth and 2048 fast Fourier transform size; the maximum 3-D volumetric rendering rate, including B-scan, en face view display, and 3-D rendering, was ~23 volumes/second (volume size: 1024×256×200). To the best of our knowledge, this is the fastest processing rate reported to date with a single-chip GPU and the first implementation of real-time video-rate volumetric optical coherence tomography (OCT) processing and rendering that is capable of matching the acquisition rates of ultrahigh-speed OCT.

  14. Graphics processing unit accelerated optical coherence tomography processing at megahertz axial scan rate and high resolution video rate volumetric rendering

    Science.gov (United States)

    Jian, Yifan; Wong, Kevin; Sarunic, Marinko V.

    2013-02-01

    In this report, we describe how to highly optimize a computer unified device architecture based platform to perform real-time processing of optical coherence tomography interferometric data and three-dimensional (3-D) volumetric rendering using a commercially available, cost-effective, graphics processing unit (GPU). The maximum complete attainable axial scan processing rate, including memory transfer and displaying B-scan frame, was 2.24 MHz for 16 bits pixel depth and 2048 fast Fourier transform size; the maximum 3-D volumetric rendering rate, including B-scan, en face view display, and 3-D rendering, was ˜23 volumes/second (volume size: 1024×256×200). To the best of our knowledge, this is the fastest processing rate reported to date with a single-chip GPU and the first implementation of real-time video-rate volumetric optical coherence tomography (OCT) processing and rendering that is capable of matching the acquisition rates of ultrahigh-speed OCT.

  15. An Introduction to Recording, Editing, and Streaming Picture-in-Picture Ultrasound Videos.

    Science.gov (United States)

    Rajasekaran, Sathish; Hall, Mederic M; Finnoff, Jonathan T

    2016-08-01

    This paper describes the process by which high-definition resolution (up to 1920 × 1080 pixels) ultrasound video can be captured in conjunction with high-definition video of the transducer position (picture-in-picture). In addition, we describe how to edit the recorded video feeds to combine both feeds, and to crop, resize, split, stitch, cut, annotate videos, and also change the frame rate, insert pictures, edit the audio feed, and use chroma keying. We also describe how to stream a picture-in-picture ultrasound feed during a videoconference. Copyright © 2016 American Academy of Physical Medicine and Rehabilitation. Published by Elsevier Inc. All rights reserved.

  16. A beamforming video recorder for integrated observations of dolphin behavior and vocalizations (L)

    Science.gov (United States)

    Ball, Keenan R.; Buck, John R.

    2005-03-01

    In this Letter we describe a beamforming video recorder consisting of a video camera at the center of a 16 hydrophone array. A broadband frequency-domain beamforming algorithm is used to estimate the azimuth and elevation of each detected sound. These estimates are used to generate a visual cue indicating the location of the sound source within the video recording, which is synchronized to the acoustic data. The system provided accurate results in both lab calibrations and a field test. The system allows researchers to correlate the acoustic and physical behaviors of marine mammals during studies of social interactions. .

  17. High definition in minimally invasive surgery: a review of methods for recording, editing, and distributing video.

    Science.gov (United States)

    Kelly, Christopher R; Hogle, Nancy J; Landman, Jaime; Fowler, Dennis L

    2008-09-01

    The use of high-definition cameras and monitors during minimally invasive procedures can provide the surgeon and operating team with more than twice the resolution of standard definition systems. Although this dramatic improvement in visualization offers numerous advantages, the adoption of high definition cameras in the operating room can be challenging because new recording equipment must be purchased, and several new technologies are required to edit and distribute video. The purpose of this review article is to provide an overview of the popular methods for recording, editing, and distributing high-definition video. This article discusses the essential technical concepts of high-definition video, reviews the different kinds of equipment and methods most often used for recording, and describes several options for video distribution.

  18. New methodical approach to the assessment of video record which is used when training of judoists

    Directory of Open Access Journals (Sweden)

    Konstantin Ananchenko

    2016-09-01

    Full Text Available Purpose: to offer a new methodical approach for the assessment of video record which is used when training of judoists. Material & Methods: the assessment of video record, which is used in the course of training of judoists, was carried out in the research; the poll of 23 masters of sports of Ukraine and masters of sports of international class. Results: flexibility of a new methodical approach for the video record assessment is proved. Methodical approach assumes the use of unique mathematical apparatus – methods of pair comparisons and arrangement of priorities. It can be used for the assessment of video films for judoists of the various skill level, age, physical parameters for individual training of certain judoists at the correct selection of parameters of comparison. Conclusions: the use of the given methodical approach will promote the increase of efficiency of the competitive activity and coach's work, will allow judoists to reach high levels of individual skill.

  19. The history of consumer magnetic video tape recording, from a rarity to a mass product

    NARCIS (Netherlands)

    Luitjens, S.B.; Rijckaert, A.M.A.

    1999-01-01

    Since the Þrst experiments on magnetic recording by Valdemar Poulsen in 1898 the use of this technology has grown tremendously and magnetic storage is used in almost every home in the world. A special challenge was the recording of video signals which need a high bandwidth. In the 1950s, television

  20. Introducing video recording in primary care midwifery for research purposes: procedure, dataset, and use.

    Science.gov (United States)

    Spelten, Evelien R; Martin, Linda; Gitsels, Janneke T; Pereboom, Monique T R; Hutton, Eileen K; van Dulmen, Sandra

    2015-01-01

    video recording studies have been found to be complex; however very few studies describe the actual introduction and enrolment of the study, the resulting dataset and its interpretation. In this paper we describe the introduction and the use of video recordings of health care provider (HCP)-client interactions in primary care midwifery for research purposes. We also report on the process of data management, data coding and the resulting data set. we describe our experience in undertaking a study using video recording to assess the interaction of the midwife and her client in the first antenatal consultation, in a real life clinical practice setting in the Netherlands. Midwives from six practices across the Netherlands were recruited to videotape 15-20 intakes. The introduction, complexity of the study and intrusiveness of the study were discussed within the research group. The number of valid recordings and missing recordings was measured; reasons not to participate, non-response analyses, and the inter-rater reliability of the coded videotapes were assessed. Video recordings were supplemented by questionnaires for midwives and clients. The Roter Interaction Analysis System (RIAS) was used for coding as well as an obstetric topics scale. at the introduction of the study, more initial hesitation in co-operation was found among the midwives than among their clients. The intrusive nature of the recording on the interaction was perceived to be minimal. The complex nature of the study affected recruitment and data collection. Combining the dataset with the questionnaires and medical records proved to be a challenge. The final dataset included videotapes of 20 midwives (7-23 recordings per midwife). Of the 460 eligible clients, 324 gave informed consent. The study resulted in a significant dataset of first antenatal consultations involving recording 269 clients and 194 partners. video recording of midwife-client interaction was both feasible and challenging and resulted

  1. The PC graphics handbook

    CERN Document Server

    Sanchez, Julio

    2003-01-01

    Part I - Graphics Fundamentals PC GRAPHICS OVERVIEW History and Evolution Short History of PC Video PS/2 Video Systems SuperVGA Graphics Coprocessors and Accelerators Graphics Applications State-of-the-Art in PC Graphics 3D Application Programming Interfaces POLYGONAL MODELING Vector and Raster Data Coordinate Systems Modeling with Polygons IMAGE TRANSFORMATIONS Matrix-based Representations Matrix Arithmetic 3D Transformations PROGRAMMING MATRIX TRANSFORMATIONS Numeric Data in Matrix Form Array Processing PROJECTIONS AND RENDERING Perspective The Rendering Pipeline LIGHTING AND SHADING Lightin

  2. The history of consumer magnetic video tape recording, from a rarity to a mass product

    Science.gov (United States)

    Luitjens, S. B.; Rijckaert, A. M. A.

    1999-03-01

    Since the first experiments on magnetic recording by Valdemar Poulsen in 1898 the use of this technology has grown tremendously and magnetic storage is used in almost every home in the world. A special challenge was the recording of video signals which need a high bandwidth. In the 1950s, television broadcasts had started which created a need for storage in the broadcast world. The first broadcast recorder was the Quadruplex from Ampex in 1956. Later solutions were found for application in the consumer market. Better mechanics, magnetic tapes and recording heads allowed the mass production of a cheap consumer recorder. The size and weight decreased tremendously and portable camcorders are very common. Recording of broadcasts, video rental and home movies are now very popular. The factors which contributed to the maturing of this technology will be reviewed in this paper.

  3. [Video recording system of endoscopic procedures for digital forensics].

    Science.gov (United States)

    Endo, Chiaki; Sakurada, A; Kondo, T

    2009-07-01

    Recently, endoscopic procedures including surgery, intervention, and examination have been widely performed. Medical practitioners are required to record the procedures precisely in order to check the procedures retrospectively and to get the legally reliable record. Medical Forensic System made by KS Olympus Japan offers 2 kinds of movie and patient's data, such as heart rate, blood pressure, and Spo, which are simultaneously recorded. We installed this system into the bronchoscopy room and have experienced its benefit. Under this system, we can get bronchoscopic image, bronchoscopy room view, and patient's data simultaneously. We can check the quality of the bronchoscopic procedures retrospectively, which is useful for bronchoscopy staff training. Medical Forensic System should be installed in any kind of endoscopic procedures.

  4. Translation between written spanish and video-recorded uruguayan sign language: a new challenge

    Directory of Open Access Journals (Sweden)

    Leonardo Peluso

    2015-12-01

    Full Text Available This paper deals with the concept of deferred textuality which is more comprehensive than writing, as it allows the inclusion of sign language video-recordings. If one considers that sign language video-recordings are deferred textuality, it can also be argued that a literate culture can be developed around them, understood as the culture built around deferred textuality and the social and institutional practices they spawn. From this idea, I will show that the translation between oral languages written texts and sign languages video-recorded texts is also possible. I will also point out that, in the case of Uruguay and its sign language (LSU, this kind or translation is imperative in front of an increasingly demanding Deaf Community, occupying new social spaces.

  5. Translation between written spanish and video-recorded uruguayan sign language: a new challenge

    Directory of Open Access Journals (Sweden)

    Leonardo Peluso

    2015-10-01

    Full Text Available This paper deals with the concept of deferred textuality which is more comprehensive than writing, as it allows the inclusion of sign language video-recordings. If one considers that  sign language video-recordings are deferred textuality, it can also be argued that  a literate culture can be developed around them, understood as the culture built around deferred textuality and the social and institutional practices they spawn. From this idea, I will show that the translation between oral languages written texts and sign languages video-recorded texts is also possible. I will also point out that, in the case of Uruguay and its sign language (LSU, this kind or translation is imperative in front of an increasingly demanding Deaf Community, occupying new social spaces.

  6. Graphical technologies, innovation and aesthetics in the video game industry: a case study of the shift from 2d to 3d graphics in the 1990s

    Directory of Open Access Journals (Sweden)

    Dominic Arsenault

    2013-03-01

    Full Text Available This paper provides an overview of a research project currently in progress at the Université de Montréal (Québec, Canada. Funded by the FQRSC (Fonds de recherche Québec – Société et Culture / Quebec Fund for Research – Society and Culture for a three-year period (from May 2012 to May 2015, the project studies the transition from 2D to 3D graphics in gaming during the 1990s

  7. Videorec as gameplay: Recording playthroughs and video game engagement

    Directory of Open Access Journals (Sweden)

    Gabriel Menotti

    2014-03-01

    Full Text Available This paper outlines an alternative genealogy of “non-narrative machinima” by the means of tracing a parallel with different cinematographic genres. It analyses the circuit of production and distribution of such material as a field for modes of superplay, in which users both compete and collaborate. Doing so, it proposes that the recording of playthroughs, a practice seemingly secondary to videogame consumption, might constitute an essential part of its culture and development, creating meaningful interfaces between players and industries.

  8. The client’s ideas and fantasies of the supervisor in video recorded psychotherapy

    DEFF Research Database (Denmark)

    Jacobsen, Claus Haugaard; Jensen, Karen Boelt; Madsen, Ninna Skov

    2010-01-01

    Aim: Despite the current relatively widespread use of video as a supervisory tool, there are few empirical studies on how recordings influence the relationship between client and supervisor. This paper presents a qualitative, explorative study of clients’ experience of having their psychotherapy...... on three related topics; a) the clients’ experience of the video recordings’ influence on therapy; b) the therapeutic relationship and c) fantasy relationship with supervisor. The answers were analyzed in accordance to Hill et al.’s (1997; 2005) guidelines for conducting Consensual Qualitative Research...... by two independent researchers and a third auditor. Furthermore, clients rated the overall influence of video recording and the influence across time on Likert scales. Results: This paper only focus on the results concerning the clients’ fantasy relationship to the supervisor. In general the clients...

  9. An integrable, web-based solution for easy assessment of video-recorded performances

    DEFF Research Database (Denmark)

    Subhi, Yousif; Todsen, Tobias; Konge, Lars

    2014-01-01

    Assessment of clinical competencies by direct observation is problematic for two main reasons the identity of the examinee influences the assessment scores, and direct observation demands experts at the exact location and the exact time. Recording the performance can overcome these problems......; however, managing video recordings and assessment sheets is troublesome and may lead to missing or incorrect data. Currently, no existing software solution can provide a local solution for the management of videos and assessments but this is necessary as assessment scores are confidential information......, and access to this information should be restricted to select personnel. A local software solution may also ease the need for customization to local needs and integration into existing user databases or project management software. We developed an integrable web-based solution for easy assessment of video...

  10. A new angle on parallel languages: the contribution of visual arts to a vocabulary of graphical projection in video games

    Directory of Open Access Journals (Sweden)

    Audrey Larochelle

    2013-03-01

    Full Text Available It is fair to argue that in the short history of game studies, the concept of graphical projection has not been used in all its dimensions. In a way, we might even say that the idea has been systematically overlooked. Therefore, in order to fully express the potential of graphical projection in game studies, we have to properly define the vocabulary used to describe its various forms.

  11. Seizure semiology inferred from clinical descriptions and from video recordings. How accurate are they?

    DEFF Research Database (Denmark)

    Beniczky, Simona Alexandra; Fogarasi, András; Neufeld, Miri

    2012-01-01

    To assess how accurate the interpretation of seizure semiology is when inferred from witnessed seizure descriptions and from video recordings, five epileptologists analyzed 41 seizures from 30 consecutive patients who had clinical episodes in the epilepsy monitoring unit. For each clinical episode...

  12. Assessing Nonverbal Communication Skills through Video Recording and Debriefing of Clinical Skill Simulation Exams

    Science.gov (United States)

    Heinerichs, Scott; Cattano, Nicole M.; Morrison, Katherine E.

    2013-01-01

    Context: Nonverbal communication (NVC) skills are a critical component to clinician interactions with patients, and no research exists on the investigation of athletic training students' nonverbal communication skills. Video recording and debriefing have been identified as methods to assess and educate students' NVC skills in other allied health…

  13. The impact of online video lecture recordings and automated feedback on student performance

    NARCIS (Netherlands)

    Wieling, M. B.; Hofman, W. H. A.

    To what extent a blended learning configuration of face-to-face lectures, online on-demand video recordings of the face-to-face lectures and the offering of online quizzes with appropriate feedback has an additional positive impact on the performance of these students compared to the traditional

  14. An Intensive Presentations Course in English for Aeronautical Engineering Students Using Cyclic Video Recordings

    Science.gov (United States)

    Tatzl, Dietmar

    2017-01-01

    This article presents the design and evaluation of an intensive presentations course for aeronautical engineering students based on cyclic video recordings. The target group of this course in English for specific purposes (ESP) were undergraduate final-year students who needed to improve their presentation and foreign language skills to prepare…

  15. The air gap between tape and drum in a video recorder

    NARCIS (Netherlands)

    Moes, H.

    1991-01-01

    Lubrication with ambient air is not quite generally applied. The best known application is the "oil bearing" in tape recording systems for audio, video and computer applications; where the gap height that is needed for effective lubrication may quite easily be attained. This air gap reduces tape

  16. Use of low-cost video recording device in reflective practice in cataract surgery.

    Science.gov (United States)

    Bhogal, Maninder M; Angunawela, Romesh I; Little, Brian C

    2010-04-01

    Reflective surgical practice is invaluable for surgeons at all levels of experience. For trainees in particular, every surgical opportunity must be optimized for its learning potential. Recording and reviewing cataract surgery is an invaluable tool. We describe a video recording device that has the advantages of ease of use; low cost; portability; and ease of review, editing, and dissemination, all of which encourage regular use and reflective surgical practice. Copyright (c) 2010 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

  17. Video Recording With a GoPro in Hand and Upper Extremity Surgery.

    Science.gov (United States)

    Vara, Alexander D; Wu, John; Shin, Alexander Y; Sobol, Gregory; Wiater, Brett

    2016-10-01

    Video recordings of surgical procedures are an excellent tool for presentations, analyzing self-performance, illustrating publications, and educating surgeons and patients. Recording the surgeon's perspective with high-resolution video in the operating room or clinic has become readily available and advances in software improve the ease of editing these videos. A GoPro HERO 4 Silver or Black was mounted on a head strap and worn over the surgical scrub cap, above the loupes of the operating surgeon. Five live surgical cases were recorded with the camera. The videos were uploaded to a computer and subsequently edited with iMovie or the GoPro software. The optimal settings for both the Silver and Black editions, when operating room lights are used, were determined to be a narrow view, 1080p, 60 frames per second (fps), spot meter on, protune on with auto white balance, exposure compensation at -0.5, and without a polarizing lens. When the operating room lights were not used, it was determined that the standard settings for a GoPro camera were ideal for positioning and editing (4K, 15 frames per second, spot meter and protune off). The GoPro HERO 4 provides high-quality, the surgeon perspective, and a cost-effective video recording of upper extremity surgical procedures. Challenges include finding the optimal settings for each surgical procedure and the length of recording due to battery life limitations. Copyright © 2016 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

  18. A System for Reflective Learning Using Handwriting Tablet Devices for Real-Time Event Bookmarking into Simultaneously Recorded Videos

    Science.gov (United States)

    Nakajima, Taira

    2012-01-01

    The author demonstrates a new system useful for reflective learning. Our new system offers an environment that one can use handwriting tablet devices to bookmark symbolic and descriptive feedbacks into simultaneously recorded videos in the environment. If one uses video recording and feedback check sheets in reflective learning sessions, one can…

  19. Observing the Testing Effect using Coursera Video-Recorded Lectures: A Preliminary Study.

    Science.gov (United States)

    Yong, Paul Zhihao; Lim, Stephen Wee Hun

    2015-01-01

    We investigated the testing effect in Coursera video-based learning. One hundred and twenty-three participants either (a) studied an instructional video-recorded lecture four times, (b) studied the lecture three times and took one recall test, or (c) studied the lecture once and took three tests. They then took a final recall test, either immediately or a week later, through which their learning was assessed. Whereas repeated studying produced better recall performance than did repeated testing when the final test was administered immediately, testing produced better performance when the final test was delayed until a week after. The testing effect was observed using Coursera lectures. Future directions are documented.

  20. Audiovisual presentation of video-recorded stimuli at a high frame rate.

    Science.gov (United States)

    Lidestam, Björn

    2014-06-01

    A method for creating and presenting video-recorded synchronized audiovisual stimuli at a high frame rate-which would be highly useful for psychophysical studies on, for example, just-noticeable differences and gating-is presented. Methods for accomplishing this include recording audio and video separately using an exact synchronization signal, editing the recordings and finding exact synchronization points, and presenting the synchronized audiovisual stimuli with a desired frame rate on a cathode ray tube display using MATLAB and Psychophysics Toolbox 3. The methods from an empirical gating study (Moradi, Lidestam, & Rönnberg, Frontiers in Psychology 4:359, 2013) are presented as an example of the implementation of playback at 120 fps.

  1. An efficient record linkage scheme using graphical analysis for identifier error detection

    Directory of Open Access Journals (Sweden)

    Peto Tim EA

    2011-02-01

    Full Text Available Abstract Background Integration of information on individuals (record linkage is a key problem in healthcare delivery, epidemiology, and "business intelligence" applications. It is now common to be required to link very large numbers of records, often containing various combinations of theoretically unique identifiers, such as NHS numbers, which are both incomplete and error-prone. Methods We describe a two-step record linkage algorithm in which identifiers with high cardinality are identified or generated, and used to perform an initial exact match based linkage. Subsequently, the resulting clusters are studied and, if appropriate, partitioned using a graph based algorithm detecting erroneous identifiers. Results The system was used to cluster over 250 million health records from five data sources within a large UK hospital group. Linkage, which was completed in about 30 minutes, yielded 3.6 million clusters of which about 99.8% contain, with high likelihood, records from one patient. Although computationally efficient, the algorithm's requirement for exact matching of at least one identifier of each record to another for cluster formation may be a limitation in some databases containing records of low identifier quality. Conclusions The technique described offers a simple, fast and highly efficient two-step method for large scale initial linkage for records commonly found in the UK's National Health Service.

  2. Digital video recordings for training, assessment, and revalidation of surgical skills.

    Science.gov (United States)

    Gambadauro, Pietro; Magos, Adam

    2010-10-01

    Surgical training is undergoing drastic changes, and new strategies should be adopted to keep quality standards. The authors review and advocate the use of surgical recordings as a useful complement to current training, assessment, and revalidation modalities. For trainees, such recordings would promote quality-based and competence-based surgical training and allow for self-evaluation. Video logbooks could be used to aid interaction between trainer and trainee, and facilitate formative assessment. Recordings of surgery could also be integrated into trainees' portfolios and regular assessments. Finally, such recordings could make surgeons' revalidation more sensible. The routine use of records of surgical procedures could become an integral component of the standard of care. This would have been an unattractive suggestion until recently, as analogue recording techniques are inconvenient, cumbersome, and time consuming. Today, however, with the advent of inexpensive digital technologies, such a concept is realistic and is likely to improve patient care.

  3. Graphical Interface for Measuring and Recording Temperature with the DS18B20 Digital Output Sensor

    OpenAIRE

    Viorel POPA; Elena POPA

    2013-01-01

    The article presents the authors’ two originalgraphical interfaces made in Borland Delphi anddesigned to measure and record (with the DS18B20sensor) a wide range of negative and positivetemperatures. The first interface allows the readingof a sensor’s unique code and then themeasurement and recording of temperature. Thesecond interface can work with a variable numberof such sensors once their unique code has beenentered.The interfaces have been conceived for thestudy of the slow variations of...

  4. Using Grounded Theory to Analyze Qualitative Observational Data that is Obtained by Video Recording

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    Colin Griffiths

    2013-06-01

    Full Text Available This paper presents a method for the collection and analysis of qualitative data that is derived by observation and that may be used to generate a grounded theory. Video recordings were made of the verbal and non-verbal interactions of people with severe and complex disabilities and the staff who work with them. Three dyads composed of a student/teacher or carer and a person with a severe or profound intellectual disability were observed in a variety of different activities that took place in a school. Two of these recordings yielded 25 minutes of video, which was transcribed into narrative format. The nature of the qualitative micro data that was captured is described and the fit between such data and classic grounded theory is discussed. The strengths and weaknesses of the use of video as a tool to collect data that is amenable to analysis using grounded theory are considered. The paper concludes by suggesting that using classic grounded theory to analyze qualitative data that is collected using video offers a method that has the potential to uncover and explain patterns of non-verbal interactions that were not previously evident.

  5. Patients' statements and experiences concerning receiving mechanical ventilation: a prospective video-recorded study.

    Science.gov (United States)

    Karlsson, Veronika; Lindahl, Berit; Bergbom, Ingegerd

    2012-09-01

    Prospective studies using video-recordings of patients during mechanical ventilator treatment (MVT) while conscious have not previously been published. The aim was to describe patients' statements, communication and facial expressions during a video-recorded interview while undergoing MVT. Content analysis and hermeneutics inspired by the philosophy of Gadamer were used. The patients experienced almost constant difficulties in breathing and lost their voice. The most common types of communication techniques patients used were nodding or shaking the head. Their expressions were interpreted as stiffened facial expression, tense body position and feelings of sadness and sorrow. Nursing care for patients' conscious during MVT is challenging as it creates new demands regarding the content of the care provided. In caring for patients undergoing MVT while conscious, establishing a caring relationship, making patients feel safe and helping them to communicate seem to be most important for alleviating discomfort and instilling hope. © 2011 Blackwell Publishing Ltd.

  6. Quantification of Urine Elimination Behaviors in Cats with a Video Recording System

    OpenAIRE

    R. Dulaney, D.; Hopfensperger, M.; Malinowski, R.; Hauptman, J.; Kruger, J M

    2017-01-01

    Background Urinary disorders in cats often require subjective caregiver quantification of clinical signs to establish a diagnosis and monitor therapeutic outcomes. Objective To investigate use of a video recording system (VRS) to better assess and quantify urination behaviors in cats. Animals Eleven healthy cats and 8 cats with disorders potentially associated with abnormal urination patterns. Methods Prospective study design. Litter box urination behaviors were quantified with a VRS for 14 d...

  7. Unsupervised decoding of long-term, naturalistic human neural recordings with automated video and audio annotations

    Directory of Open Access Journals (Sweden)

    Nancy X.R. Wang

    2016-04-01

    Full Text Available Fully automated decoding of human activities and intentions from direct neural recordings is a tantalizing challenge in brain-computer interfacing. Implementing Brain Computer Interfaces (BCIs outside carefully controlled experiments in laboratory settings requires adaptive and scalable strategies with minimal supervision. Here we describe an unsupervised approach to decoding neural states from naturalistic human brain recordings. We analyzed continuous, long-term electrocorticography (ECoG data recorded over many days from the brain of subjects in a hospital room, with simultaneous audio and video recordings. We discovered coherent clusters in high-dimensional ECoG recordings using hierarchical clustering and automatically annotated them using speech and movement labels extracted from audio and video. To our knowledge, this represents the first time techniques from computer vision and speech processing have been used for natural ECoG decoding. Interpretable behaviors were decoded from ECoG data, including moving, speaking and resting; the results were assessed by comparison with manual annotation. Discovered clusters were projected back onto the brain revealing features consistent with known functional areas, opening the door to automated functional brain mapping in natural settings.

  8. Does Wearable Medical Technology With Video Recording Capability Add Value to On-Call Surgical Evaluations?

    Science.gov (United States)

    Gupta, Sameer; Boehme, Jacqueline; Manser, Kelly; Dewar, Jannine; Miller, Amie; Siddiqui, Gina; Schwaitzberg, Steven D

    2016-10-01

    Background Google Glass has been used in a variety of medical settings with promising results. We explored the use and potential value of an asynchronous, near-real time protocol-which avoids transmission issues associated with real-time applications-for recording, uploading, and viewing of high-definition (HD) visual media in the emergency department (ED) to facilitate remote surgical consults. Study Design First-responder physician assistants captured pertinent aspects of the physical examination and diagnostic imaging using Google Glass' HD video or high-resolution photographs. This visual media were then securely uploaded to the study website. The surgical consultation then proceeded over the phone in the usual fashion and a clinical decision was made. The surgeon then accessed the study website to review the uploaded video. This was followed by a questionnaire regarding how the additional data impacted the consultation. Results The management plan changed in 24% (11) of cases after surgeons viewed the video. Five of these plans involved decision making regarding operative intervention. Although surgeons were generally confident in their initial management plan, confidence scores increased further in 44% (20) of cases. In addition, we surveyed 276 ED patients on their opinions regarding concerning the practice of health care providers wearing and using recording devices in the ED. The survey results revealed that the majority of patients are amenable to the addition of wearable technology with video functionality to their care. Conclusions This study demonstrates the potential value of a medically dedicated, hands-free, HD recording device with internet connectivity in facilitating remote surgical consultation. © The Author(s) 2016.

  9. Graphical Interface for Measuring and Recording Temperature with the DS18B20 Digital Output Sensor

    Directory of Open Access Journals (Sweden)

    Viorel POPA

    2013-06-01

    Full Text Available The article presents the authors’ two originalgraphical interfaces made in Borland Delphi anddesigned to measure and record (with the DS18B20sensor a wide range of negative and positivetemperatures. The first interface allows the readingof a sensor’s unique code and then themeasurement and recording of temperature. Thesecond interface can work with a variable numberof such sensors once their unique code has beenentered.The interfaces have been conceived for thestudy of the slow variations of air temperatureinside chambers or wood, in timber freezing,heating or drying processes.To achieve the purpose we have alsoexperimented on other variants of temperaturesensors, but finally we have adopted the variantthat uses the DS18B20 digital output sensormanufactured by Dallas Company. This sensor hasthe following advantages:- a small size (it can be easily inserted into a 4mm diameter hole made in the wood piece;- it measures temperatures between -55°Cand +125°C;- it can relatively easily connect to the RS232serial port of a computer;- with only two wires one can ensure datainsertion and transmission from a numberof 4 ÷ 10 sensors of this type.

  10. A Passionate Journey Info-Motion Graphics Video Exploring Why and How to Find Work You Love

    Science.gov (United States)

    Zhou, Jia

    Benjamin Disraeli, a 19th century British Prime Minister, once said, "Man is not a rational animal. He is only truly good or great when he acts from passion." Passion is the fuel that can power you toward the realization of your dreams. To live a truly satisfying and purposeful life, it is important for every individual to know what their passions are so life will be fulfilling. Teenagers choose their career after they graduate from high school. They begin to wonder what they will become and what contributions they can make in the future. It is important for people to choose something interesting that leads them to work hard in their career. This thesis is a motion graphics piece called "A Passionate Journey." It presents an idea to students to help them contemplate about the things in which they have always been interested, discover their true passions, and choose jobs based on their enthusiasm. When people pursue something of which they are fond, they ultimately become successful. Information is received by people's minds, silencing their inner critics and offering them the courage and self-confidence to purse whatever they love. Therefore, the goal of this motion graphic design is help people to start observing themselves, think about what always makes them passionate, and choose something about which they are passionate in their future careers.

  11. "How To" Videos Improve Residents Performance of Essential Perioperative Electronic Medical Records and Clinical Tasks.

    Science.gov (United States)

    Zoghbi, Veronica; Caskey, Robert C; Dumon, Kristoffel R; Soegaard Ballester, Jacqueline M; Brooks, Ari D; Morris, Jon B; Dempsey, Daniel T

    2017-08-08

    The ability to use electronic medical records (EMR) is an essential skill for surgical residents. However, frustration and anxiety surrounding EMR tasks may detract from clinical performance. We created a series of brief, 1-3 minutes "how to" videos demonstrating 7 key perioperative EMR tasks: booking OR cases, placing preprocedure orders, ordering negative-pressure wound dressing supplies, updating day-of-surgery history and physical notes, writing brief operative notes, discharging patients from the postanesthesia care unit, and checking vital signs. Additionally, we used "Cutting Insights"-a locally developed responsive mobile application for surgical trainee education-as a platform for providing interns with easy access to these videos. We hypothesized that exposure to these videos would lead to increased resident efficiency and confidence in performing essential perioperative tasks, ultimately leading to improved clinical performance. Eleven surgery interns participated in this initiative. Before watching the "how to" videos, each intern was timed performing the aforementioned 7 key perioperative EMR tasks. They also underwent a simulated perioperative emergency requiring the performance of 3 of these EMR tasks in conjunction with 5 other required interventions (including notifying the chief resident, the anesthesia team, and the OR coordinator; and ordering fluid boluses, appropriate laboratories, and blood products). These simulations were scored on a scale from 0 to 8. The interns were then directed to watch the videos. Two days later, their times for performing the 7 tasks and their scores for a similar perioperative emergency simulation were once again recorded. Before and after watching the videos, participants were surveyed to assess their confidence in performing each EMR task using a 5-point Likert scale. We also elicited their opinions of the videos and web-based mobile application using a 5-point scale. Statistical analyses to assess for

  12. Observing the Testing Effect using Coursera Video-recorded Lectures: A Preliminary Study

    Directory of Open Access Journals (Sweden)

    Paul Zhihao eYONG

    2016-01-01

    Full Text Available We investigated the testing effect in Coursera video-based learning. One hundred and twenty-three participants either (a studied an instructional video-recorded lecture four times, (b studied the lecture three times and took one recall test, or (c studied the lecture once and took three tests. They then took a final recall test, either immediately or a week later, through which their learning was assessed. Whereas repeated studying produced better recall performance than did repeated testing when the final test was administered immediately, testing produced better performance when the final test was delayed until a week after. The testing effect was observed using Coursera lectures. Future directions are documented.

  13. Clinicians can accurately assign Apgar scores to video recordings of simulated neonatal resuscitations.

    Science.gov (United States)

    Nadler, Izhak; Liley, Helen G; Sanderson, Penelope M

    2010-08-01

    The Apgar score is used to describe the clinical condition of newborns. However, clinicians show low reliability when assigning Apgar scores to video recordings of actual neonatal resuscitations. Simulators provide a controlled environment for recreating and recording resuscitations. Clinicians assigned Apgar scores to such recordings to test the representativeness of simulator and recordings. Study design was guided by Brunswik's probabilistic functionalism. Judgment analysis methods were used to design 51 recordings of neonatal resuscitation scenarios, simulated with SimNewB (Laerdal, Stavanger, Norway). A step-by-step explanation of the design, preparation, and testing of the recordings is provided. Recorded Apgar scores, calculated from the presentation of clinical signs, were compared against the designed scores. Working independently and without feedback, three experts assigned Apgar scores to confirm that the recordings could be interpreted as intended. Seventeen neonatal resuscitation clinicians scored the recordings in a separate experiment. Correlations between Apgar scores assigned by the 20 viewers (experts plus clinicians) and recorded Apgar scores were high (0.78-0.91) and significant (P < 0.01). Fourteen of the 20 viewers scored the recordings without significant bias. Correlations between viewers' scores and scores of individualized linear models calculated for each viewer were high (0.79-0.97) and significant (P < 0.01), indicating systematic judgments. SimNewB provided a realistic presentation of clinical conditions that was preserved in the recordings. Clinicians could interpret clinical conditions systematically and accurately without feedback or detailed instructions. These methods are applicable to future research about accuracy of clinical assessments in actual and simulated environments.

  14. SIGMATA: Storage Integrity Guaranteeing Mechanism against Tampering Attempts for Video Event Data Recorders

    Directory of Open Access Journals (Sweden)

    Hyuckmin Kwon

    2016-04-01

    Full Text Available The usage and market size of video event data recorders (VEDRs, also known as car black boxes, are rapidly increasing. Since VEDRs can provide more visual information about car accident situations than any other device that is currently used for accident investigations (e.g., closed-circuit television, the integrity of the VEDR contents is important to any meaningful investigation. Researchers have focused on the file system integrity or photographic approaches to integrity verification. However, unlike other general data, the video data in VEDRs exhibit a unique I/O behavior in that the videos are stored chronologically. In addition, the owners of VEDRs can manipulate unfavorable scenes after accidents to conceal their recorded behavior. Since prior arts do not consider the time relationship between the frames and fail to discover frame-wise forgery, a more detailed integrity assurance is required. In this paper, we focus on the development of a frame-wise forgery detection mechanism that resolves the limitations of previous mechanisms. We introduce SIGMATA, a novel storage integrity guaranteeing mechanism against tampering attempts for VEDRs. We describe its operation, demonstrate its effectiveness for detecting possible frame-wise forgery, and compare it with existing mechanisms. The result shows that the existing mechanisms fail to detect any frame-wise forgery, while our mechanism thoroughly detects every frame-wise forgery. We also evaluate its computational overhead using real VEDR videos. The results show that SIGMATA indeed discovers frame-wise forgery attacks effectively and efficiently, with the encoding overhead less than 1.5 milliseconds per frame.

  15. Video event data recording of a taxi driver used for diagnosis of epilepsy.

    Science.gov (United States)

    Sakurai, Kotaro; Yamamoto, Junko; Kurita, Tsugiko; Takeda, Youji; Kusumi, Ichiro

    2014-01-01

    A video event data recorder (VEDR) in a motor vehicle records images before and after a traffic accident. This report describes a taxi driver whose seizures were recorded by VEDR, which was extremely useful for the diagnosis of epilepsy. The patient was a 63-year-old right-handed Japanese male taxi driver. He collided with a streetlight. Two years prior to this incident, he raced an engine for a long time while parked. The VEDR enabled confirmation that the accidents depended on an epileptic seizure and he was diagnosed with symptomatic localization-related epilepsy. The VEDR is useful not only for traffic accident evidence; it might also contribute to a driver's health care and road safety.

  16. Video event data recording of a taxi driver used for diagnosis of epilepsy☆

    Science.gov (United States)

    Sakurai, Kotaro; Yamamoto, Junko; Kurita, Tsugiko; Takeda, Youji; Kusumi, Ichiro

    2014-01-01

    A video event data recorder (VEDR) in a motor vehicle records images before and after a traffic accident. This report describes a taxi driver whose seizures were recorded by VEDR, which was extremely useful for the diagnosis of epilepsy. The patient was a 63-year-old right-handed Japanese male taxi driver. He collided with a streetlight. Two years prior to this incident, he raced an engine for a long time while parked. The VEDR enabled confirmation that the accidents depended on an epileptic seizure and he was diagnosed with symptomatic localization-related epilepsy. The VEDR is useful not only for traffic accident evidence; it might also contribute to a driver's health care and road safety. PMID:25667862

  17. Localizing wushu players on a platform based on a video recording

    Science.gov (United States)

    Peczek, Piotr M.; Zabołotny, Wojciech M.

    2017-08-01

    This article describes the development of a method to localize an athlete during sports performance on a platform, based on a static video recording. Considered sport for this method is wushu - martial art. However, any other discipline can be applied. There are specified requirements, and 2 algorithms of image processing are described. The next part presents an experiment that was held based on recordings from the Pan American Wushu Championship. Based on those recordings the steps of the algorithm are shown. Results are evaluated manually. The last part of the article concludes if the algorithm is applicable and what improvements have to be implemented to use it during sports competitions as well as for offline analysis.

  18. Video event data recording of a taxi driver used for diagnosis of epilepsy

    Directory of Open Access Journals (Sweden)

    Kotaro Sakurai

    2014-01-01

    Full Text Available A video event data recorder (VEDR in a motor vehicle records images before and after a traffic accident. This report describes a taxi driver whose seizures were recorded by VEDR, which was extremely useful for the diagnosis of epilepsy. The patient was a 63-year-old right-handed Japanese male taxi driver. He collided with a streetlight. Two years prior to this incident, he raced an engine for a long time while parked. The VEDR enabled confirmation that the accidents depended on an epileptic seizure and he was diagnosed with symptomatic localization-related epilepsy. The VEDR is useful not only for traffic accident evidence; it might also contribute to a driver's health care and road safety.

  19. Use of selfie sticks and iPhones to record operative photos and videos in plastic surgery.

    Science.gov (United States)

    Chandrappa, Ashok Basur; Nagaraj, Pradeep Kumar; Vasudevan, Srikanth; Nagaraj, Anantheswar Yelampalli; Jagadish, Krithika; Shah, Ankit

    2017-01-01

    Use of smartphone has become ubiquitous. With smartphone cameras becoming powerful, they are replacing digital cameras and digital SLRs as primary instruments to take photos and record videos. It is natural even for plastic surgeons that smartphones are handy to take still photographs and even record high-definition or 4K videos. Another invention which has become popular with smartphone photography is a selfie stick. We explain the possibility and methodology of using an iPhone and selfie stick to take operative photographs and high-quality videos.

  20. Use of selfie sticks and iPhones to record operative photos and videos in plastic surgery

    Directory of Open Access Journals (Sweden)

    Ashok Basur Chandrappa

    2017-01-01

    Full Text Available Use of smartphone has become ubiquitous. With smartphone cameras becoming powerful, they are replacing digital cameras and digital SLRs as primary instruments to take photos and record videos. It is natural even for plastic surgeons that smartphones are handy to take still photographs and even record high-definition or 4K videos. Another invention which has become popular with smartphone photography is a selfie stick. We explain the possibility and methodology of using an iPhone and selfie stick to take operative photographs and high-quality videos.

  1. Classifying Normal and Abnormal Status Based on Video Recordings of Epileptic Patients

    Directory of Open Access Journals (Sweden)

    Jing Li

    2014-01-01

    Full Text Available Based on video recordings of the movement of the patients with epilepsy, this paper proposed a human action recognition scheme to detect distinct motion patterns and to distinguish the normal status from the abnormal status of epileptic patients. The scheme first extracts local features and holistic features, which are complementary to each other. Afterwards, a support vector machine is applied to classification. Based on the experimental results, this scheme obtains a satisfactory classification result and provides a fundamental analysis towards the human-robot interaction with socially assistive robots in caring the patients with epilepsy (or other patients with brain disorders in order to protect them from injury.

  2. Video Game Preservation in the UK: A Survey of Records Management Practices

    Directory of Open Access Journals (Sweden)

    Alasdair Bachell

    2014-10-01

    Full Text Available Video games are a cultural phenomenon; a medium like no other that has become one of the largest entertainment sectors in the world. While the UK boasts an enviable games development heritage, it risks losing a major part of its cultural output through an inability to preserve the games that are created by the country’s independent games developers. The issues go deeper than bit rot and other problems that affect all digital media; loss of context, copyright and legal issues, and the throwaway culture of the ‘next’ game all hinder the ability of fans and academics to preserve video games and make them accessible in the future. This study looked at the current attitudes towards preservation in the UK’s independent (‘indie’ video games industry by examining current record-keeping practices and analysing the views of games developers. The results show that there is an interest in preserving games, and possibly a desire to do so, but issues of piracy and cost prevent the industry from undertaking preservation work internally, and from allowing others to assume such responsibility. The recommendation made by this paper is not simply for preservation professionals and enthusiasts to collaborate with the industry, but to do so by advocating the commercial benefits that preservation may offer to the industry.

  3. Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records

    Science.gov (United States)

    Teixidó, Núria; Gili, Josep-Maria; Uriz, María-J.; Gutt, Julian; Arntz, Wolf E.

    2006-04-01

    Hexactinellid sponges are one of the structuring taxa of benthic communities on the Weddell Sea shelf (Antarctica). However, little is known about their reproduction patterns (larval development, release, settlement, and recruitment), particularly in relation to sexual and asexual processes in sponge populations. Video stations obtained during several expeditions covering a wide depth range and different areas recorded a high frequency of asexual reproductive strategies (ARS) (bipartition and budding) among hexactinellids. Analysis of seabed video strips between 108 and 256 m depth, representing an area of 1400 m 2, showed that about 28% of these sponges exhibited ARS. The Rossella nuda type dominated most of the video stations and exhibited the highest proportion of budding (35%). This proportion increased with the size class. Size class >20 cm exhibited in all the stations a mean value of 8.3±0.7 (SE) for primary and of 2.5±0.2 (SE) for secondary propagules per sponge, respectively. Results from a shallow station (Stn 059, 117 m depth) showed the highest relative abundance of R. nuda type and budding (>20 cm ˜72%, 10-20 cm ˜60%, 5-10 cm ˜12%, and <5 cm ˜3%). A potential influence of iceberg scouring disturbance on the occurrence of budding and number of propagules also was investigated. We conclude that asexual reproduction in hexactinellid sponges may be more frequent than has been thought before and it may greatly influence the genetic structure of populations.

  4. Binocular video ophthalmoscope for simultaneous recording of sequences of the human retina to compare dynamic parameters

    Science.gov (United States)

    Tornow, Ralf P.; Milczarek, Aleksandra; Odstrcilik, Jan; Kolar, Radim

    2017-07-01

    A parallel video ophthalmoscope was developed to acquire short video sequences (25 fps, 250 frames) of both eyes simultaneously with exact synchronization. Video sequences were registered off-line to compensate for eye movements. From registered video sequences dynamic parameters like cardiac cycle induced reflection changes and eye movements can be calculated and compared between eyes.

  5. Characterization of Axial Inducer Cavitation Instabilities via High Speed Video Recordings

    Science.gov (United States)

    Arellano, Patrick; Peneda, Marinelle; Ferguson, Thomas; Zoladz, Thomas

    2011-01-01

    Sub-scale water tests were undertaken to assess the viability of utilizing high resolution, high frame-rate digital video recordings of a liquid rocket engine turbopump axial inducer to characterize cavitation instabilities. These high speed video (HSV) images of various cavitation phenomena, including higher order cavitation, rotating cavitation, alternating blade cavitation, and asymmetric cavitation, as well as non-cavitating flows for comparison, were recorded from various orientations through an acrylic tunnel using one and two cameras at digital recording rates ranging from 6,000 to 15,700 frames per second. The physical characteristics of these cavitation forms, including the mechanisms that define the cavitation frequency, were identified. Additionally, these images showed how the cavitation forms changed and transitioned from one type (tip vortex) to another (sheet cavitation) as the inducer boundary conditions (inlet pressures) were changed. Image processing techniques were developed which tracked the formation and collapse of cavitating fluid in a specified target area, both in the temporal and frequency domains, in order to characterize the cavitation instability frequency. The accuracy of the analysis techniques was found to be very dependent on target size for higher order cavitation, but much less so for the other phenomena. Tunnel-mounted piezoelectric, dynamic pressure transducers were present throughout these tests and were used as references in correlating the results obtained by image processing. Results showed good agreement between image processing and dynamic pressure spectral data. The test set-up, test program, and test results including H-Q and suction performance, dynamic environment and cavitation characterization, and image processing techniques and results will be discussed.

  6. Simultaneous recordings of human microsaccades and drifts with a contemporary video eye tracker and the search coil technique.

    Directory of Open Access Journals (Sweden)

    Michael B McCamy

    Full Text Available Human eyes move continuously, even during visual fixation. These "fixational eye movements" (FEMs include microsaccades, intersaccadic drift and oculomotor tremor. Research in human FEMs has grown considerably in the last decade, facilitated by the manufacture of noninvasive, high-resolution/speed video-oculography eye trackers. Due to the small magnitude of FEMs, obtaining reliable data can be challenging, however, and depends critically on the sensitivity and precision of the eye tracking system. Yet, no study has conducted an in-depth comparison of human FEM recordings obtained with the search coil (considered the gold standard for measuring microsaccades and drift and with contemporary, state-of-the art video trackers. Here we measured human microsaccades and drift simultaneously with the search coil and a popular state-of-the-art video tracker. We found that 95% of microsaccades detected with the search coil were also detected with the video tracker, and 95% of microsaccades detected with video tracking were also detected with the search coil, indicating substantial agreement between the two systems. Peak/mean velocities and main sequence slopes of microsaccades detected with video tracking were significantly higher than those of the same microsaccades detected with the search coil, however. Ocular drift was significantly correlated between the two systems, but drift speeds were higher with video tracking than with the search coil. Overall, our combined results suggest that contemporary video tracking now approaches the search coil for measuring FEMs.

  7. Surgeon point-of-view recording: Using a high-definition head-mounted video camera in the operating room.

    Science.gov (United States)

    Nair, Akshay Gopinathan; Kamal, Saurabh; Dave, Tarjani Vivek; Mishra, Kapil; Reddy, Harsha S; Della Rocca, David; Della Rocca, Robert C; Andron, Aleza; Jain, Vandana

    2015-10-01

    To study the utility of a commercially available small, portable ultra-high definition (HD) camera (GoPro Hero 4) for intraoperative recording. A head mount was used to fix the camera on the operating surgeon's head. Due care was taken to protect the patient's identity. The recorded video was subsequently edited and used as a teaching tool. This retrospective, noncomparative study was conducted at three tertiary eye care centers. The surgeries recorded were ptosis correction, ectropion correction, dacryocystorhinostomy, angular dermoid excision, enucleation, blepharoplasty and lid tear repair surgery (one each). The recorded videos were reviewed, edited, and checked for clarity, resolution, and reproducibility. The recorded videos were found to be high quality, which allowed for zooming and visualization of the surgical anatomy clearly. Minimal distortion is a drawback that can be effectively addressed during postproduction. The camera, owing to its lightweight and small size, can be mounted on the surgeon's head, thus offering a unique surgeon point-of-view. In our experience, the results were of good quality and reproducible. A head-mounted ultra-HD video recording system is a cheap, high quality, and unobtrusive technique to record surgery and can be a useful teaching tool in external facial and ophthalmic plastic surgery.

  8. OPTIMISATION OF OCCUPATIONAL RADIATION PROTECTION IN IMAGE-GUIDED INTERVENTIONS: EXPLORING VIDEO RECORDINGS AS A TOOL IN THE PROCESS.

    Science.gov (United States)

    Almén, Anja; Sandblom, Viktor; Rystedt, Hans; von Wrangel, Alexa; Ivarsson, Jonas; Båth, Magnus; Lundh, Charlotta

    2016-06-01

    The overall purpose of this work was to explore how video recordings can contribute to the process of optimising occupational radiation protection in image-guided interventions. Video-recorded material from two image-guided interventions was produced and used to investigate to what extent it is conceivable to observe and assess dose-affecting actions in video recordings. Using the recorded material, it was to some extent possible to connect the choice of imaging techniques to the medical events during the procedure and, to a less extent, to connect these technical and medical issues to the occupational exposure. It was possible to identify a relationship between occupational exposure level to staff and positioning and use of shielding. However, detailed values of the dose rates were not possible to observe on the recordings, and the change in occupational exposure level from adjustments of exposure settings was not possible to identify. In conclusion, the use of video recordings is a promising tool to identify dose-affecting instances, allowing for a deeper knowledge of the interdependency between the management of the medical procedure, the applied imaging technology and the occupational exposure level. However, for a full information about the dose-affecting actions, the equipment used and the recording settings have to be thoroughly planned. © The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  9. Surgeon point-of-view recording: Using a high-definition head-mounted video camera in the operating room

    Directory of Open Access Journals (Sweden)

    Akshay Gopinathan Nair

    2015-01-01

    Full Text Available Objective: To study the utility of a commercially available small, portable ultra-high definition (HD camera (GoPro Hero 4 for intraoperative recording. Methods: A head mount was used to fix the camera on the operating surgeon′s head. Due care was taken to protect the patient′s identity. The recorded video was subsequently edited and used as a teaching tool. This retrospective, noncomparative study was conducted at three tertiary eye care centers. The surgeries recorded were ptosis correction, ectropion correction, dacryocystorhinostomy, angular dermoid excision, enucleation, blepharoplasty and lid tear repair surgery (one each. The recorded videos were reviewed, edited, and checked for clarity, resolution, and reproducibility. Results: The recorded videos were found to be high quality, which allowed for zooming and visualization of the surgical anatomy clearly. Minimal distortion is a drawback that can be effectively addressed during postproduction. The camera, owing to its lightweight and small size, can be mounted on the surgeon′s head, thus offering a unique surgeon point-of-view. In our experience, the results were of good quality and reproducible. Conclusions: A head-mounted ultra-HD video recording system is a cheap, high quality, and unobtrusive technique to record surgery and can be a useful teaching tool in external facial and ophthalmic plastic surgery.

  10. Investigating interactional competence using video recordings in ESL classrooms to enhance communication

    Science.gov (United States)

    Krishnasamy, Hariharan N.

    2016-08-01

    Interactional competence, or knowing and using the appropriate skills for interaction in various communication situations within a given speech community and culture is important in the field of business and professional communication [1], [2]. Similar to many developing countries in the world, Malaysia is a growing economy and undergraduates will have to acquire appropriate communication skills. In this study, two aspects of the interactional communicative competence were investigated, that is the linguistic and paralinguistic behaviors in small group communication as well as conflict management in small group communication. Two groups of student participants were given a problem-solving task based on a letter of complaint. The two groups of students were video recorded during class hours for 40 minutes. The videos and transcription of the group discussions were analyzed to examine the use of language and interaction in small groups. The analysis, findings and interpretations were verified with three lecturers in the field of communication. The results showed that students were able to accomplish the given task using verbal and nonverbal communication. However, participation was unevenly distributed with two students talking for less than a minute. Negotiation was based more on alternative views and consensus was easily achieved. In concluding, suggestions are given on ways to improve English language communication.

  11. Video-EEG recordings in full-term neonates of diabetic mothers: observational study.

    Science.gov (United States)

    Castro Conde, José Ramón; González González, Nieves Luisa; González Barrios, Desiré; González Campo, Candelaria; Suárez Hernández, Yaiza; Sosa Comino, Elena

    2013-11-01

    To determine whether full-term newborn infants of diabetic mothers (IDM) present immature/disorganised EEG patterns in the immediate neonatal period, and whether there was any relationship with maternal glycaemic control. Cohort study with an incidental sample performed in a tertiary hospital neonatal unit. 23 IDM and 22 healthy newborns born between 2010 and 2013. All underwent video-EEG recording lasting >90 min at 48-72 h of life. We analysed the percentage of indeterminate sleep, transient sharp waves per hour and mature-for-gestational age EEG patterns (discontinuity, maximum duration of interburst interval (IBI), asynchrony, asymmetry, δ brushes, encoches frontales and α/θ rolandic activity). The group of IDM was divided into two subgroups according to maternal HbA1c: (1) HbA1c≥6% and (2) HbA1cIDM presented significantly higher percentage of indeterminate sleep (57% vs 25%; pIDM with maternal HbA1c≥6% showed greater percentage of δ brushes in the burst (14% vs 4%; p=0.007). Full-term IDM newborns showed video-EEG features of abnormal development of brain function. Maternal HbA1c levels<6% during pregnancy could minimise the risk of cerebral dysmaturity.

  12. Fractal measures of video-recorded trajectories can classify motor subtypes in Parkinson's Disease

    Science.gov (United States)

    Figueiredo, Thiago C.; Vivas, Jamile; Peña, Norberto; Miranda, José G. V.

    2016-11-01

    Parkinson's Disease is one of the most prevalent neurodegenerative diseases in the world and affects millions of individuals worldwide. The clinical criteria for classification of motor subtypes in Parkinson's Disease are subjective and may be misleading when symptoms are not clearly identifiable. A video recording protocol was used to measure hand tremor of 14 individuals with Parkinson's Disease and 7 healthy subjects. A method for motor subtype classification was proposed based on the spectral distribution of the movement and compared with the existing clinical criteria. Box-counting dimension and Hurst Exponent calculated from the trajectories were used as the relevant measures for the statistical tests. The classification based on the power-spectrum is shown to be well suited to separate patients with and without tremor from healthy subjects and could provide clinicians with a tool to aid in the diagnosis of patients in an early stage of the disease.

  13. Low-cost synchronization of high-speed audio and video recordings in bio-acoustic experiments.

    Science.gov (United States)

    Laurijssen, Dennis; Verreycken, Erik; Geipel, Inga; Daems, Walter; Peremans, Herbert; Steckel, Jan

    2017-12-19

    In this paper, we present a method for synchronizing high-speed audio and video recordings of bio-acoustic experiments. By embedding a random signal into the recorded video and audio data, robust synchronization of a diverse set of sensor streams can be performed without the need to keep detailed records. The synchronization can be performed using recording devices without dedicated synchronization inputs. We demonstrate the efficacy of the approach in two sets of experiments: behavioral experiments on different species of echolocating bats and the recordings of field crickets. We present the general operating principle of the synchronization method, discuss its synchronization strength and provide insights in how to construct such a device using off-the-shelf components. © 2017. Published by The Company of Biologists Ltd.

  14. On-Board Video Recording Unravels Bird Behavior and Mortality Produced by High-Speed Trains

    Directory of Open Access Journals (Sweden)

    Eladio L. García de la Morena

    2017-10-01

    Full Text Available Large high-speed railway (HSR networks are planned for the near future to accomplish increased transport demand with low energy consumption. However, high-speed trains produce unknown avian mortality due to birds using the railway and being unable to avoid approaching trains. Safety and logistic difficulties have precluded until now mortality estimation in railways through carcass removal, but information technologies can overcome such problems. We present the results obtained with an experimental on-board system to record bird-train collisions composed by a frontal recording camera, a GPS navigation system and a data storage unit. An observer standing in the cabin behind the driver controlled the system and filled out a form with data of collisions and bird observations in front of the train. Photographs of the train front taken before and after each journey were used to improve the record of killed birds. Trains running the 321.7 km line between Madrid and Albacete (Spain at speeds up to 250–300 km/h were equipped with the system during 66 journeys along a year, totaling approximately 14,700 km of effective recording. The review of videos produced 1,090 bird observations, 29.4% of them corresponding to birds crossing the infrastructure under the catenary and thus facing collision risk. Recordings also showed that 37.7% bird crossings were of animals resting on some element of the infrastructure moments before the train arrival, and that the flight initiation distance of birds (mean ± SD was between 60 ± 33 m (passerines and 136 ± 49 m (raptors. Mortality in the railway was estimated to be 60.5 birds/km year on a line section with 53 runs per day and 26.1 birds/km year in a section with 25 runs per day. Our results are the first published estimation of bird mortality in a HSR and show the potential of information technologies to yield useful data for monitoring the impact of trains on birds via on-board recording systems. Moreover

  15. Energy use of televisions and video cassette recorders in the U.S.

    Energy Technology Data Exchange (ETDEWEB)

    Meier, Alan; Rosen, Karen

    1999-03-01

    In an effort to more accurately determine nationwide energy consumption, the U.S. Department of Energy has recently commissioned studies with the goal of improving its understanding of the energy use of appliances in the miscellaneous end-use category. This study presents an estimate of the residential energy consumption of two of the most common domestic appliances in the miscellaneous end-use category: color televisions (TVs) and video cassette recorders (VCRs). The authors used a bottom-up approach in estimating national TV and VCR energy consumption. First, they obtained estimates of stock and usage from national surveys, while TV and VCR power measurements and other data were recorded at repair and retail shops. Industry-supplied shipment and sales distributions were then used to minimize bias in the power measurement samples. To estimate national TV and VCR energy consumption values, ranges of power draw and mode usage were created to represent situations in homes with more than one unit. Average energy use values for homes with one unit, two units, etc. were calculated and summed to provide estimates of total national TV and VCR energy consumption.

  16. [Video recording and data collection in the operating room: the way to a 'just culture' in the OR].

    Science.gov (United States)

    Schijven, M P; Legemate, D A; Legemaate, J

    2017-01-01

    The Academic Medical Center, Amsterdam, has started a trial to evaluate the usefulness to team debriefings of performance reports generated by a medical data recorder (MDR) in the operating room (OR). Outcome performance reports in structured debriefings in a secure, non-punitive environment are likely to heighten the level of situational awareness of OR teams. This may prevent future error. In addition, the use of video and - even more likely - use of an MDR may contribute to establishing a 'just culture' in the OR. MDRs offer a wealth of data, but only if these data are processed well do the resulting outcome reports reveal insights useful for structured debriefings. The implementation of video recordings or MDRs must be preceded by carefully addressing privacy and litigation issues relating to both OR staff and patients. In this article, we address viewpoints and discuss implementation strategy and the legal considerations involved in enabling the use of video and data registration in the OR.

  17. Practitioner Action Research on Writing Center Tutor Training: Critical Discourse Analysis of Reflections on Video-Recorded Sessions

    Science.gov (United States)

    Pigliacelli, Mary

    2017-01-01

    Training writing center tutors to work collaboratively with students on their writing is a complex and challenging process. This practitioner action research uses critical discourse analysis (Gee, 2014a) to interrogate tutors' understandings of their work, as expressed in their written reflections on video-recorded tutoring sessions, to facilitate…

  18. 75 FR 63434 - Availability of Compliance Guide for the Use of Video or Other Electronic Monitoring or Recording...

    Science.gov (United States)

    2010-10-15

    ... Food Safety and Inspection Service Availability of Compliance Guide for the Use of Video or Other Electronic Monitoring or Recording Equipment in Federally Inspected Establishments AGENCY: Food Safety and... communicated via Listserv, a free electronic mail subscription service for industry, trade groups, consumer...

  19. A comparison of camera trap and permanent recording video camera efficiency in wildlife underpasses.

    Science.gov (United States)

    Jumeau, Jonathan; Petrod, Lana; Handrich, Yves

    2017-09-01

    In the current context of biodiversity loss through habitat fragmentation, the effectiveness of wildlife crossings, installed at great expense as compensatory measures, is of vital importance for ecological and socio-economic actors. The evaluation of these structures is directly impacted by the efficiency of monitoring tools (camera traps…), which are used to assess the effectiveness of these crossings by observing the animals that use them. The aim of this study was to quantify the efficiency of camera traps in a wildlife crossing evaluation. Six permanent recording video systems sharing the same field of view as six Reconyx HC600 camera traps installed in three wildlife underpasses were used to assess the exact proportion of missed events (event being the presence of an animal within the field of view), and the error rate concerning underpass crossing behavior (defined as either Entry or Refusal). A sequence of photographs was triggered by either animals (true trigger) or artefacts (false trigger). We quantified the number of false triggers that had actually been caused by animals that were not visible on the images ("false" false triggers). Camera traps failed to record 43.6% of small mammal events (voles, mice, shrews, etc.) and 17% of medium-sized mammal events. The type of crossing behavior (Entry or Refusal) was incorrectly assessed in 40.1% of events, with a higher error rate for entries than for refusals. Among the 3.8% of false triggers, 85% of them were "false" false triggers. This study indicates a global underestimation of the effectiveness of wildlife crossings for small mammals. Means to improve the efficiency are discussed.

  20. ElectroEncephaloGraphics: Making waves in computer graphics research.

    Science.gov (United States)

    Mustafa, Maryam; Magnor, Marcus

    2014-01-01

    Electroencephalography (EEG) is a novel modality for investigating perceptual graphics problems. Until recently, EEG has predominantly been used for clinical diagnosis, in psychology, and by the brain-computer-interface community. Researchers are extending it to help understand the perception of visual output from graphics applications and to create approaches based on direct neural feedback. Researchers have applied EEG to graphics to determine perceived image and video quality by detecting typical rendering artifacts, to evaluate visualization effectiveness by calculating the cognitive load, and to automatically optimize rendering parameters for images and videos on the basis of implicit neural feedback.

  1. Application of video recording technology to improve husbandry and reproduction in the carmine bee-eater (Merops n. nubicus).

    Science.gov (United States)

    Ferrie, Gina M; Sky, Christy; Schutz, Paul J; Quinones, Glorieli; Breeding, Shawnlei; Plasse, Chelle; Leighty, Katherine A; Bettinger, Tammie L

    2016-01-01

    Incorporating technology with research is becoming increasingly important to enhance animal welfare in zoological settings. Video technology is used in the management of avian populations to facilitate efficient information collection on aspects of avian reproduction that are impractical or impossible to obtain through direct observation. Disney's Animal Kingdom(®) maintains a successful breeding colony of Northern carmine bee-eaters. This African species is a cavity nester, making their nesting behavior difficult to study and manage in an ex situ setting. After initial research focused on developing a suitable nesting environment, our goal was to continue developing methods to improve reproductive success and increase likelihood of chicks fledging. We installed infrared bullet cameras in five nest boxes and connected them to a digital video recording system, with data recorded continuously through the breeding season. We then scored and summarized nesting behaviors. Using remote video methods of observation provided much insight into the behavior of the birds in the colony's nest boxes. We observed aggression between birds during the egg-laying period, and therefore immediately removed all of the eggs for artificial incubation which completely eliminated egg breakage. We also used observations of adult feeding behavior to refine chick hand-rearing diet and practices. Although many video recording configurations have been summarized and evaluated in various reviews, we found success with the digital video recorder and infrared cameras described here. Applying emerging technologies to cavity nesting avian species is a necessary addition to improving management in and sustainability of zoo avian populations. © 2015 Wiley Periodicals, Inc.

  2. Literacy in the 21st Century: The Fourth R--Video Recording

    Science.gov (United States)

    Siegle, Del

    2009-01-01

    Young people are surrounded by visual images, and they naturally are drawn to viewing and creating videos. Educators are remiss if they do not seize on this significant communication and learning tool. Similar to projects involving writing, video projects allow students to communicate their ideas, thoughts, and feelings. Therefore, most…

  3. Video-recorded simulated patient interactions: can they help develop clinical and communication skills in today's learning environment?

    Science.gov (United States)

    Seif, Gretchen A; Brown, Debora

    2013-01-01

    It is difficult to provide real-world learning experiences for students to master clinical and communication skills. The purpose of this paper is to describe a novel instructional method using self- and peer-assessment, reflection, and technology to help students develop effective interpersonal and clinical skills. The teaching method is described by the constructivist learning theory and incorporates the use of educational technology. The learning activities were incorporated into the pre-clinical didactic curriculum. The students participated in two video-recording assignments and performed self-assessments on each and had a peer-assessment on the second video-recording. The learning activity was evaluated through the self- and peer-assessments and an instructor-designed survey. This evaluation identified several themes related to the assignment, student performance, clinical behaviors and establishing rapport. Overall the students perceived that the learning activities assisted in the development of clinical and communication skills prior to direct patient care. The use of video recordings of a simulated history and examination is a unique learning activity for preclinical PT students in the development of clinical and communication skills.

  4. The reliability and accuracy of estimating heart-rates from RGB video recorded on a consumer grade camera

    Science.gov (United States)

    Eaton, Adam; Vincely, Vinoin; Lloyd, Paige; Hugenberg, Kurt; Vishwanath, Karthik

    2017-03-01

    Video Photoplethysmography (VPPG) is a numerical technique to process standard RGB video data of exposed human skin and extracting the heart-rate (HR) from the skin areas. Being a non-contact technique, VPPG has the potential to provide estimates of subject's heart-rate, respiratory rate, and even the heart rate variability of human subjects with potential applications ranging from infant monitors, remote healthcare and psychological experiments, particularly given the non-contact and sensor-free nature of the technique. Though several previous studies have reported successful correlations in HR obtained using VPPG algorithms to HR measured using the gold-standard electrocardiograph, others have reported that these correlations are dependent on controlling for duration of the video-data analyzed, subject motion, and ambient lighting. Here, we investigate the ability of two commonly used VPPG-algorithms in extraction of human heart-rates under three different laboratory conditions. We compare the VPPG HR values extracted across these three sets of experiments to the gold-standard values acquired by using an electrocardiogram or a commercially available pulseoximeter. The two VPPG-algorithms were applied with and without KLT-facial feature tracking and detection algorithms from the Computer Vision MATLAB® toolbox. Results indicate that VPPG based numerical approaches have the ability to provide robust estimates of subject HR values and are relatively insensitive to the devices used to record the video data. However, they are highly sensitive to conditions of video acquisition including subject motion, the location, size and averaging techniques applied to regions-of-interest as well as to the number of video frames used for data processing.

  5. The challenge associated with the robust computation of meteor velocities from video and photographic records

    Science.gov (United States)

    Egal, A.; Gural, P. S.; Vaubaillon, J.; Colas, F.; Thuillot, W.

    2017-09-01

    The CABERNET project was designed to push the limits for obtaining accurate measurements of meteoroids orbits from photographic and video meteor camera recordings. The discrepancy between the measured and theoretic orbits of these objects heavily depends on the semi-major axis determination, and thus on the reliability of the pre-atmospheric velocity computation. With a spatial resolution of 0.01° per pixel and a temporal resolution of up to 10 ms, CABERNET should be able to provide accurate measurements of velocities and trajectories of meteors. To achieve this, it is necessary to improve the precision of the data reduction processes, and especially the determination of the meteor's velocity. In this work, most of the steps of the velocity computation are thoroughly investigated in order to reduce the uncertainties and error contributions at each stage of the reduction process. The accuracy of the measurement of meteor centroids is established and results in a precision of 0.09 pixels for CABERNET, which corresponds to 3.24‧‧. Several methods to compute the velocity were investigated based on the trajectory determination algorithms described in Ceplecha (1987) and Borovicka (1990), as well as the multi-parameter fitting (MPF) method proposed by Gural (2012). In the case of the MPF, many optimization methods were implemented in order to find the most efficient and robust technique to solve the minimization problem. The entire data reduction process is assessed using simulated meteors, with different geometrical configurations and deceleration behaviors. It is shown that the multi-parameter fitting method proposed by Gural(2012)is the most accurate method to compute the pre-atmospheric velocity in all circumstances. Many techniques that assume constant velocity at the beginning of the path as derived from the trajectory determination using Ceplecha (1987) or Borovicka (1990) can lead to large errors for decelerating meteors. The MPF technique also allows one to

  6. A Study of Behavioral Change in 50 Severely Multi-Sensorily Handicapped Children Through Application of the Video-Tape Recorded Behavioral Evaluation Protocol. Final Report.

    Science.gov (United States)

    Curtis, W. Scott

    Examined with 49 deaf-blind children (under 9 years old) was the use of the Telediagnostic Behavior Evaluation Protocol, a video-tape recorded evaluation protocol. To further develop the Telediagnostic Protocol and delineate the characteristics of the Ss observed during the process of test development, Ss were video-taped in eight 3-minute…

  7. Relating pressure measurements to phenomena observed in high speed video recordings during tests of explosive charges in a semi-confined blast chamber

    CSIR Research Space (South Africa)

    Mostert, FJ

    2012-09-01

    Full Text Available video recordings were obtained from the open end of the chamber of the fireball and post detonative behaviour of explosive products. The framing rate of the video camera was 10 000 fps and the pressure measurements were obtained for at least 10 ms after...

  8. Monitoring the body temperature of cows and calves using video recordings from an infrared thermography camera.

    Science.gov (United States)

    Hoffmann, Gundula; Schmidt, Mariana; Ammon, Christian; Rose-Meierhöfer, Sandra; Burfeind, Onno; Heuwieser, Wolfgang; Berg, Werner

    2013-06-01

    The aim of this study was to assess the variability of temperatures measured by a video-based infrared camera (IRC) in comparison to rectal and vaginal temperatures. The body surface temperatures of cows and calves were measured contactless at different body regions using videos from the IRC. Altogether, 22 cows and 9 calves were examined. The differences of the measured IRC temperatures among the body regions, i.e. eye (mean: 37.0 °C), back of the ear (35.6 °C), shoulder (34.9 °C) and vulva (37.2 °C), were significant (P infrared thermography videos has the advantage to analyze more than 1 picture per animal in a short period of time, and shows potential as a monitoring system for body temperatures in cattle.

  9. Does video recording alter the behavior of police during interrogation? A mock crime-and-investigation study.

    Science.gov (United States)

    Kassin, Saul M; Kukucka, Jeff; Lawson, Victoria Z; DeCarlo, John

    2014-02-01

    A field study conducted in a midsized city police department examined whether video recording alters the process of interrogation. Sixty-one investigators inspected a staged crime scene and interrogated a male mock suspect in sessions that were surreptitiously recorded. By random assignment, half the suspects had committed the mock crime; the other half were innocent. Half the police participants were informed that the sessions were being recorded; half were not. Coding of the interrogations revealed the use of several common tactics designed to get suspects to confess. Importantly, police in the camera-informed condition were less likely than those in the -uninformed condition to use minimization tactics and marginally less likely to use maximization tactics. They were also perceived by suspects-who were all uninformed of the camera manipulation-as trying less hard to elicit a confession. Unanticipated results indicated that camera-informed police were better able to discriminate between guilty and innocent suspects in their judgments and behavior. The results as a whole indicate that video recording can affect the process of interrogation-notably, by inhibiting the use of certain tactics. It remains to be seen whether these findings generalize to longer and more consequential sessions and whether the camera-induced differences found are to be judged as favorable or unfavorable.

  10. Immersive video

    Science.gov (United States)

    Moezzi, Saied; Katkere, Arun L.; Jain, Ramesh C.

    1996-03-01

    Interactive video and television viewers should have the power to control their viewing position. To make this a reality, we introduce the concept of Immersive Video, which employs computer vision and computer graphics technologies to provide remote users a sense of complete immersion when viewing an event. Immersive Video uses multiple videos of an event, captured from different perspectives, to generate a full 3D digital video of that event. That is accomplished by assimilating important information from each video stream into a comprehensive, dynamic, 3D model of the environment. Using this 3D digital video, interactive viewers can then move around the remote environment and observe the events taking place from any desired perspective. Our Immersive Video System currently provides interactive viewing and `walkthrus' of staged karate demonstrations, basketball games, dance performances, and typical campus scenes. In its full realization, Immersive Video will be a paradigm shift in visual communication which will revolutionize television and video media, and become an integral part of future telepresence and virtual reality systems.

  11. Video Tape Recording Evaluation Protocol Behavior Rating Form - Part 1: Communication.

    Science.gov (United States)

    Curtis, W. Scott; Donlon, Edward T.

    Presented is the behavior rating scale designed for use with a video tape protocol for examination of multiply handicapped deaf blind children, whose development and evaluation are discussed in EC 040 599. The behavioral rating scale consists of five sections: unstructured orientation of child in examining area, child's task orientation and…

  12. Perspectives on Using Video Recordings in Conversation Analytical Studies on Learning in Interaction

    Science.gov (United States)

    Rusk, Fredrik; Pörn, Michaela; Sahlström, Fritjof; Slotte-Lüttge, Anna

    2015-01-01

    Video is currently used in many studies to document the interaction in conversation analytical (CA) studies on learning. The discussion on the method used in these studies has primarily focused on the analysis or the data construction, whereas the relation between data construction and analysis is rarely brought to attention. The aim of this…

  13. Linking the sounds of dolphins to their locations and behavior using video and multichannel acoustic recordings.

    Science.gov (United States)

    Thomas, Rebecca E; Fristrup, Kurt M; Tyack, Peter L

    2002-10-01

    It is difficult to attribute underwater animal sounds to the individuals producing them. This paper presents a system developed to solve this problem for dolphins by linking acoustic locations of the sounds of captive bottlenose dolphins with an overhead video image. A time-delay beamforming algorithm localized dolphin sounds obtained from an array of hydrophones dispersed around a lagoon. The localized positions of vocalizing dolphins were projected onto video images. The performance of the system was measured for artificial calibration signals as well as for dolphin sounds. The performance of the system for calibration signals was analyzed in terms of acoustic localization error, video projection error, and combined acoustic localization and video error. The 95% confidence bounds for these were 1.5, 2.1, and 2.1 m, respectively. Performance of the system was analyzed for three types of dolphin sounds: echolocation clicks, whistles, and burst-pulsed sounds. The mean errors for these were 0.8, 1.3, and 1.3 m, respectively. The 95% confidence bound for all vocalizations was 2.8 m, roughly the length of an adult bottlenose dolphin. This system represents a significant advance for studying the function of vocalizations of marine animals in relation to their context, as the sounds can be identified to the vocalizing dolphin and linked to its concurrent behavior.

  14. Graphic Storytelling

    Science.gov (United States)

    Thompson, John

    2009-01-01

    Graphic storytelling is a medium that allows students to make and share stories, while developing their art communication skills. American comics today are more varied in genre, approach, and audience than ever before. When considering the impact of Japanese manga on the youth, graphic storytelling emerges as a powerful player in pop culture. In…

  15. Digital video.

    Science.gov (United States)

    Johnson, Don; Johnson, Mike

    2004-04-01

    The process of digital capture, editing, and archiving video has become an important aspect of documenting arthroscopic surgery. Recording the arthroscopic findings before and after surgery is an essential part of the patient's medical record. The hardware and software has become more reasonable to purchase, but the learning curve to master the software is steep. Digital video is captured at the time of arthroscopy to a hard disk, and written to a CD at the end of the operative procedure. The process of obtaining video of open procedures is more complex. Outside video of the procedure is recorded on digital tape with a digital video camera. The camera must be plugged into a computer to capture the video on the hard disk. Adobe Premiere software is used to edit the video and render the finished video to the hard drive. This finished video is burned onto a CD. We outline the choice of computer hardware and software for the manipulation of digital video. The techniques of backup and archiving the completed projects and files also are outlined. The uses of digital video for education and the formats that can be used in PowerPoint presentations are discussed.

  16. Surgical video recording with a modified GoPro Hero 4 camera

    Directory of Open Access Journals (Sweden)

    Lin LK

    2016-01-01

    Full Text Available Lily Koo Lin Department of Ophthalmology and Vision Science, University of California, Davis Eye Center, Sacramento, CA, USA Background: Surgical videography can provide analytical self-examination for the surgeon, teaching opportunities for trainees, and allow for surgical case presentations. This study examined if a modified GoPro Hero 4 camera with a 25 mm lens could prove to be a cost-effective method of surgical videography with enough detail for oculoplastic and strabismus surgery. Method: The stock lens mount and lens were removed from a GoPro Hero 4 camera, and was refitted with a Peau Productions SuperMount and 25 mm lens. The modified GoPro Hero 4 camera was then fixed to an overhead surgical light. Results: Camera settings were set to 1080p video resolution. The 25 mm lens allowed for nine times the magnification as the GoPro stock lens. There was no noticeable video distortion. The entire cost was less than 600 USD. Conclusion: The adapted GoPro Hero 4 with a 25 mm lens allows for high-definition, cost-effective, portable video capture of oculoplastic and strabismus surgery. The 25 mm lens allows for detailed videography that can enhance surgical teaching and self-examination. Keywords: teaching, oculoplastic, strabismus

  17. Surgical video recording with a modified GoPro Hero 4 camera.

    Science.gov (United States)

    Lin, Lily Koo

    2016-01-01

    Surgical videography can provide analytical self-examination for the surgeon, teaching opportunities for trainees, and allow for surgical case presentations. This study examined if a modified GoPro Hero 4 camera with a 25 mm lens could prove to be a cost-effective method of surgical videography with enough detail for oculoplastic and strabismus surgery. The stock lens mount and lens were removed from a GoPro Hero 4 camera, and was refitted with a Peau Productions SuperMount and 25 mm lens. The modified GoPro Hero 4 camera was then fixed to an overhead surgical light. Camera settings were set to 1080p video resolution. The 25 mm lens allowed for nine times the magnification as the GoPro stock lens. There was no noticeable video distortion. The entire cost was less than 600 USD. The adapted GoPro Hero 4 with a 25 mm lens allows for high-definition, cost-effective, portable video capture of oculoplastic and strabismus surgery. The 25 mm lens allows for detailed videography that can enhance surgical teaching and self-examination.

  18. Graphic pathogeographies.

    Science.gov (United States)

    Donovan, Courtney

    2014-09-01

    This paper focuses on the graphic pathogeographies in David B.'s Epileptic and David Small's Stitches: A Memoir to highlight the significance of geographic concepts in graphic novels of health and disease. Despite its importance in such works, few scholars have examined the role of geography in their narrative and structure. I examine the role of place in Epileptic and Stitches to extend the academic discussion on graphic novels of health and disease and identify how such works bring attention to the role of geography in the individual's engagement with health, disease, and related settings.

  19. 13 point video tape quality guidelines

    Energy Technology Data Exchange (ETDEWEB)

    Gaunt, R.

    1997-05-01

    Until high definition television (ATV) arrives, in the U.S. we must still contend with the National Television Systems Committee (NTSC) video standard (or PAL or SECAM-depending on your country). NTSC, a 40-year old standard designed for transmission of color video camera images over a small bandwidth, is not well suited for the sharp, full-color images that todays computers are capable of producing. PAL and SECAM also suffers from many of NTSC`s problems, but to varying degrees. Video professionals, when working with computer graphic (CG) images, use two monitors: a computer monitor for producing CGs and an NTSC monitor to view how a CG will look on video. More often than not, the NTSC image will differ significantly from the CG image, and outputting it to NTSC as an artist works enables the him or her to see the images as others will see it. Below are thirteen guidelines designed to increase the quality of computer graphics recorded onto video tape. Viewing your work in NTSC and attempting to follow the below tips will enable you to create higher quality videos. No video is perfect, so don`t expect to abide by every guideline every time.

  20. High-speed three-frame image recording system using colored flash units and low-cost video equipment

    Science.gov (United States)

    Racca, Roberto G.; Scotten, Larry N.

    1995-05-01

    This article describes a method that allows the digital recording of sequences of three black and white images at rates of several thousand frames per second using a system consisting of an ordinary CCD camcorder, three flash units with color filters, a PC-based frame grabber board and some additional electronics. The maximum framing rate is determined by the duration of the flashtube emission, and for common photographic flash units lasting about 20 microsecond(s) it can exceed 10,000 frames per second in actual use. The subject under study is strobe- illuminated using a red, a green and a blue flash unit controlled by a special sequencer, and the three images are captured by a color CCD camera on a single video field. Color is used as the distinguishing parameter that allows the overlaid exposures to be resolved. The video output for that particular field will contain three individual scenes, one for each primary color component, which potentially can be resolved with no crosstalk between them. The output is electronically decoded into the primary color channels, frame grabbed and stored into digital memory, yielding three time-resolved images of the subject. A synchronization pulse provided by the flash sequencer triggers the frame grabbing so that the correct video field is acquired. A scheme involving the use of videotape as intermediate storage allows the frame grabbing to be performed using a monochrome video digitizer. Ideally each flash- illuminated scene would be confined to one color channel, but in practice various factors, both optical and electronic, affect color separation. Correction equations have been derived that counteract these effects in the digitized images and minimize 'ghosting' between frames. Once the appropriate coefficients have been established through a calibration procedure that needs to be performed only once for a given configuration of the equipment, the correction process is carried out transparently in software every time a

  1. Graphic Review

    DEFF Research Database (Denmark)

    Breiting, Søren

    2002-01-01

    Introduktion til 'graphic review' som en metode til at føre forståelse fra en undervisngsgang til den næste i læreruddannelse og grundskole.......Introduktion til 'graphic review' som en metode til at føre forståelse fra en undervisngsgang til den næste i læreruddannelse og grundskole....

  2. Graphic notation

    DEFF Research Database (Denmark)

    Bergstrøm-Nielsen, Carl

    1992-01-01

    Texbook to be used along with training the practise of graphic notation. Describes method; exercises; bibliography; collection of examples. If you can read Danish, please refer to that edition which is by far much more updated.......Texbook to be used along with training the practise of graphic notation. Describes method; exercises; bibliography; collection of examples. If you can read Danish, please refer to that edition which is by far much more updated....

  3. Graphics gems

    CERN Document Server

    Glassner, Andrew S

    1993-01-01

    ""The GRAPHICS GEMS Series"" was started in 1990 by Andrew Glassner. The vision and purpose of the Series was - and still is - to provide tips, techniques, and algorithms for graphics programmers. All of the gems are written by programmers who work in the field and are motivated by a common desire to share interesting ideas and tools with their colleagues. Each volume provides a new set of innovative solutions to a variety of programming problems.

  4. Concept graphics: a language for medical knowledge.

    Science.gov (United States)

    Preiss, B.; Kaltenbach, M.; Zanazaka, J.; Echave, V.

    1992-01-01

    This paper makes a case for Concept Graphics, a novel form of medical knowledge representation. Concept Graphics are assemblies of icons each of which has a precise meaning. Individual icons are metaphors of the object or process they represent. Concept Graphics are analogs of pathological situations, their symptoms, signs and other relevant components necessary for a diagnosis. We propose three principal areas of application for Concept Graphics: medical education, medical records management and research based on medical records. Our earlier work in medical education showed a clear advantage in using Concept Graphics in parallel with text of equivalent information content, over text alone. A Concept Graphics based intelligent tutoring systems (ITS) is being developed. In the area of medical records management we are developing a system for the rapid identification of relevant records based on rapid visual screening. The Concept Graphics based system can reveal properties common to specific groups of records. As such the graphics are a research tool. PMID:1482928

  5. Ventilator graphics.

    Science.gov (United States)

    Prabhakaran, Priya; Sasser, William C; Kalra, Yuvrai; Rutledge, Chrystal; Tofil, Nancy M

    2016-12-01

    Providing optimal mechanical ventilation to critically-ill children remains a challenge. Patient-ventilator dyssynchrony results frequently with numerous deleterious consequences on patient outcome including increased requirement for sedation, prolonged duration of ventilation, and greater imposed work of breathing. Most currently used ventilators have real-time, continuously-displayed graphics of pressure, volume, and flow versus time (scalars) as well as pressure, and flow versus volume (loops). A clear understanding of these graphics provides a lot of information about the mechanics of the respiratory system and the patient ventilator interaction in a dynamic fashion. Using this information will facilitate tailoring the support provided and the manner in which it is provided to best suit the dynamic needs of the patient. This paper starts with a description of the scalars and loops followed by a discussion of the information that can be obtained from each of these graphics. A review will follow, on the common types of dyssynchronous interactions and how each of these can be detected on the ventilator graphics. The final section discusses how graphics can be used to optimize the ventilator support provided to patients.

  6. A comparison between flexible electrogoniometers, inclinometers and three-dimensional video analysis system for recording neck movement.

    Science.gov (United States)

    Carnaz, Letícia; Moriguchi, Cristiane S; de Oliveira, Ana Beatriz; Santiago, Paulo R P; Caurin, Glauco A P; Hansson, Gert-Åke; Coury, Helenice J C Gil

    2013-11-01

    This study compared neck range of movement recording using three different methods goniometers (EGM), inclinometers (INC) and a three-dimensional video analysis system (IMG) in simultaneous and synchronized data collection. Twelve females performed neck flexion-extension, lateral flexion, rotation and circumduction. The differences between EGM, INC, and IMG were calculated sample by sample. For flexion-extension movement, IMG underestimated the amplitude by 13%; moreover, EGM showed a crosstalk of about 20% for lateral flexion and rotation axes. In lateral flexion movement, all systems showed similar amplitude and the inter-system differences were moderate (4-7%). For rotation movement, EGM showed a high crosstalk (13%) for flexion-extension axis. During the circumduction movement, IMG underestimated the amplitude of flexion-extension movements by about 11%, and the inter-system differences were high (about 17%) except for INC-IMG regarding lateral flexion (7%) and EGM-INC regarding flexion-extension (10%). For application in workplace, INC presents good results compared to IMG and EGM though INC cannot record rotation. EGM should be improved in order to reduce its crosstalk errors and allow recording of the full neck range of movement. Due to non-optimal positioning of the cameras for recording flexion-extension, IMG underestimated the amplitude of these movements. Copyright © 2013 IPEM. Published by Elsevier Ltd. All rights reserved.

  7. English Graphic

    OpenAIRE

    2012-01-01

    English Graphic is a book of essays on the subject of illustration, with the focus entirely on English artists using graphic media; drawings, prints and watercolours. As editor, I built on a schedule Tom drew up. It contains essays drawn from a variety of sources: the Great Works column, reviews, catalogue essays, and previously unpublished material. The historical span of the book is broad – from the Winchester Psalter Hellmouth to Harry Beck’s London Underground Map and Dom Sylvester Houéda...

  8. Graphics gems

    CERN Document Server

    Heckbert, Paul S

    1994-01-01

    Graphics Gems IV contains practical techniques for 2D and 3D modeling, animation, rendering, and image processing. The book presents articles on polygons and polyhedral; a mix of formulas, optimized algorithms, and tutorial information on the geometry of 2D, 3D, and n-D space; transformations; and parametric curves and surfaces. The text also includes articles on ray tracing; shading 3D models; and frame buffer techniques. Articles on image processing; algorithms for graphical layout; basic interpolation methods; and subroutine libraries for vector and matrix algebra are also demonstrated. Com

  9. High Definition Graphics Application In Fluid Flow Simulations

    Science.gov (United States)

    Bancroft, Gordon; Merritt, Fergus; Buning, Pieter; Watson, Val

    1987-06-01

    The Fluid Dynamics Division of the NASA Ames Research Center is using high definition (high spatial and color resolution) computer graphics to help visualize flow fields from computer simulations of air flow about vehicles such as the Space Shuttle. Computational solutions of the flow field are obtained from Cray supercomputers. These solutions are then transferred to Silicon Graphics Workstations for creation and interactive viewing of dynamic 3D displays of the flow fields. The scientist's viewing position in the 3D space can be interactively changed while the fluid flow is either frozen in time or moving in time. Specific animated sequences can be created for viewing on the workstation or for recording on video tape or 16mm movies with the aid of specialized software that permits easy editing and automatic "tweening" of the sequences. This paper will describe the software developed for creating the 3D flow field displays and for creating the animation sequences. It will also specify the hardware required to generate these displays, to record them on video tape, and to record them on 16mm film. A video tape will be shown to illustrate the capabilities of the hardware and software with examples.

  10. Reliable assessment of general surgeons' non-technical skills based on video-recordings of patient simulated scenarios.

    Science.gov (United States)

    Spanager, Lene; Beier-Holgersen, Randi; Dieckmann, Peter; Konge, Lars; Rosenberg, Jacob; Oestergaard, Doris

    2013-11-01

    Nontechnical skills are essential for safe and efficient surgery. The aim of this study was to evaluate the reliability of an assessment tool for surgeons' nontechnical skills, Non-Technical Skills for Surgeons dk (NOTSSdk), and the effect of rater training. A 1-day course was conducted for 15 general surgeons in which they rated surgeons' nontechnical skills in 9 video recordings of scenarios simulating real intraoperative situations. Data were gathered from 2 sessions separated by a 4-hour training session. Interrater reliability was high for both pretraining ratings (Cronbach's α = .97) and posttraining ratings (Cronbach's α = .98). There was no statistically significant development in assessment skills. The D study showed that 2 untrained raters or 1 trained rater was needed to obtain generalizability coefficients >.80. The high pretraining interrater reliability indicates that videos were easy to rate and Non-Technical Skills for Surgeons dk easy to use. This implies that Non-Technical Skills for Surgeons dk (NOTSSdk) could be an important tool in surgical training, potentially improving safety and quality for surgical patients. Copyright © 2013 Elsevier Inc. All rights reserved.

  11. In the here and now: enhanced motor corticospinal excitability in novices when watching live compared to video recorded dance.

    Science.gov (United States)

    Jola, Corinne; Grosbras, Marie-Hélène

    2013-01-01

    Enhanced motor corticospinal excitability (MCE) in passive action observation is thought to signify covert motor resonance with the actions seen. Actions performed by others are an important social stimulus and thus, motor resonance is prevalent during social interaction. However, most studies employ simple/short snippets of recorded movements devoid of any real-life social context, which has recently been criticized for lacking ecological validity. Here, we investigated whether the co-presence of the actor and the spectator has an impact on motor resonance by comparing novices' MCE for the finger (FDI) and the arm (ECR) with single-pulse transcranial magnetic stimulation when watching five-minute solos of ballet dance, Bharatanatyam (Indian dance) and an acting control condition either live or on video. We found that (1) MCE measured in the arm muscle was significantly enhanced in the live compared to the video condition, (2) differences across performances were only evident in the live condition, and (3) our novices reported enjoying the live presentations significantly more. We suggest that novice spectators' MCE is susceptible to the performers' live presence.

  12. New technologies in the Physical Education class. A positive experience with the digital video recording and vertical jump

    Directory of Open Access Journals (Sweden)

    Daniel Rojano Ortega

    2010-01-01

    Full Text Available The objective of the Basic Competences is to highlight the essential learning of the Secondary School Curriculum. The fourth Basic Competence introduces in the Secondary School Program the use of the Information and Communication Technologies as an essential element to be informed, to learn and to communicate. To that effect, this article tries to bring the new technologies to the Physical Education Class, specifically to the analysis of the vertical jump. This jump has been traditionally evaluated with the Sargent’s test but this test has some errors which derive from the measuring process. Nowadays there are new very precise instruments often used in sports for the analysis of the vertical jump, but their high prices make it difficult to introduce them in the school. With this article we want to show that the digital video recording and the video edition programs constitute a very appropriate way to evaluate the vertical jump because it causes in the students great interest and implication.

  13. A Study on the Read/Write Experimental Results for a High-Definition Digital Video Disc Recorder using Blue-Laser Diode

    Science.gov (United States)

    Aoki, Ikuo

    2001-03-01

    At present, tape media are mainly used for video recording globally. However, in the near future, disc media will come into general use, as they possess many strong points compared with tape media. Thus, we are now researching the development of a high-definition digital video disc recorder with high capacity, high data transfer rate, and low cost. Our target specifications are 15 GB to 18 GB, and over 35 Mbps, using a 120 mm phase change disc and a blue-laser diode. To confirm that it is possible, numerous sample discs were manufactured and experiments were carried out. We succeeded in obtaining good experimental results. In this study, we demonstrate the possibility of realizing a high-definition digital video disc recorder using a 120 mm phase change disc and a blue-laser diode without using a disc cartridge or any extraordinary method that increases the cost.

  14. Graphic notation

    DEFF Research Database (Denmark)

    Bergstrøm-Nielsen, Carl

    2010-01-01

    Graphic notation is taught to music therapy students at Aalborg University in both simple and elaborate forms. This is a method of depicting music visually, and notations may serve as memory aids, as aids for analysis and reflection, and for communication purposes such as supervision or within...

  15. Effect of clinical information and previous exam execution on observer agreement and reliability in the analysis of hysteroscopic video-recordings.

    Science.gov (United States)

    Martinho, Margarida Suzel Lopes; da Costa Santos, Cristina Maria Nogueira; Silva Carvalho, João Luís Mendonça; Bernardes, João Francisco Montenegro Andrade Lima

    2017-12-07

    Inter-observer agreement and reliability in hysteroscopic image assessment remain uncertain and the type of factors that may influence it has only been studied in relation to the experience of hysteroscopists. We aim to assess the effect of clinical information and previous exam execution on observer agreement and reliability in the analysis of hysteroscopic video-recordings. Ninety hysteroscopies were video-recorded and randomized into a group without (Group 1) and with clinical information (Group 2). The videos were independently analyzed by three hysteroscopists, regarding lesion location, dimension, and type, as well as decision to perform a biopsy. One of the hysteroscopists had executed all the exams before. Proportions of agreement (PA) and kappa statistics (κ) with 95% confidence intervals (95% CI) were used. In Group 2, there was a higher proportion of a normal diagnosis (p analysis of the video-recordings did not significantly affect the results. With clinical information, agreement and reliability in the overall analysis of hysteroscopic video-recordings may reach almost perfect results and this was not significantly affected by the execution of the exams before the analysis. However, there is still uncertainty in the analysis of specific endometrial cavity abnormalities.

  16. Automatic lameness detection based on consecutive 3D-video recordings

    NARCIS (Netherlands)

    Hertem, van T.; Viazzi, S.; Steensels, M.; Maltz, E.; Antler, A.; Alchanatis, V.; Schlageter-Tello, A.; Lokhorst, C.; Romanini, C.E.B.; Bahr, C.; Berckmans, D.; Halachmi, I.

    2014-01-01

    Manual locomotion scoring for lameness detection is a time-consuming and subjective procedure. Therefore, the objective of this study is to optimise the classification output of a computer vision based algorithm for automated lameness scoring. Cow gait recordings were made during four consecutive

  17. Proposal of a Video-recording System for the Assessment of Bell's Palsy: Methodology and Preliminary Results.

    Science.gov (United States)

    Monini, Simonetta; Marinozzi, Franco; Atturo, Francesca; Bini, Fabiano; Marchelletta, Silvia; Barbara, Maurizio

    2017-09-01

    To propose a new objective video-recording procedure to assess and monitor over time the severity of facial nerve palsy. No objective methods for facial palsy (FP) assessment are universally accepted. The face of subjects presenting with different degrees of facial nerve deficit, as measured by the House-Brackmann (HB) grading system, was videotaped after positioning, at specific points, 10 gray circular markers made of a retroreflective material. Video-recording included the resting position and six ordered facial movements. Editing and data elaboration was performed using a software instructed to assess marker distances. From the differences of the marker distances between the two sides was then extracted a score. The higher the FP degree, the higher the score registered during each movement. The statistical significance differed during the various movements between the different FP degrees, being uniform when closing the eyes gently; whereas when wrinkling the nose, there was no difference between the HB grade III and IV groups and, when smiling, no difference was evidenced between the HB grade IV and V groups.The global range index, which represents the overall degree of FP, was between 6.2 and 7.9 in the normal subjects (HB grade I); between 10.6 and 18.91 in HB grade II; between 22.19 and 33.06 in HB grade III; between 38.61 and 49.75 in HB grade IV; and between 50.97 and 66.88 in HB grade V. The proposed objective methodology could provide numerical data that correspond to the different degrees of FP, as assessed by the subjective HB grading system. These data can in addition be used singularly to score selected areas of the paralyzed face when recovery occurs with a different timing in the different face regions.

  18. Computer graphics and the graphic artist

    Science.gov (United States)

    Taylor, N. L.; Fedors, E. G.; Pinelli, T. E.

    1985-01-01

    A centralized computer graphics system is being developed at the NASA Langley Research Center. This system was required to satisfy multiuser needs, ranging from presentation quality graphics prepared by a graphic artist to 16-mm movie simulations generated by engineers and scientists. While the major thrust of the central graphics system was directed toward engineering and scientific applications, hardware and software capabilities to support the graphic artists were integrated into the design. This paper briefly discusses the importance of computer graphics in research; the central graphics system in terms of systems, software, and hardware requirements; the application of computer graphics to graphic arts, discussed in terms of the requirements for a graphic arts workstation; and the problems encountered in applying computer graphics to the graphic arts. The paper concludes by presenting the status of the central graphics system.

  19. Resurfacing Graphics

    Directory of Open Access Journals (Sweden)

    Prof. Patty K. Wongpakdee

    2013-06-01

    Full Text Available “Resurfacing Graphics” deals with the subject of unconventional design, with the purpose of engaging the viewer to experience the graphics beyond paper’s passive surface. Unconventional designs serve to reinvigorate people, whose senses are dulled by the typical, printed graphics, which bombard them each day. Today’s cutting-edge designers, illustrators and artists utilize graphics in a unique manner that allows for tactile interaction. Such works serve as valuable teaching models and encourage students to do the following: 1 investigate the trans-disciplines of art and technology; 2 appreciate that this approach can have a positive effect on the environment; 3 examine and research other approaches of design communications and 4 utilize new mediums to stretch the boundaries of artistic endeavor. This paper examines how visuals communicators are “Resurfacing Graphics” by using atypical surfaces and materials such as textile, wood, ceramics and even water. Such non-traditional transmissions of visual language serve to demonstrate student’s overreliance on paper as an outdated medium. With this exposure, students can become forward-thinking, eco-friendly, creative leaders by expanding their creative breadth and continuing the perpetual exploration for new ways to make their mark. 

  20. Resurfacing Graphics

    Directory of Open Access Journals (Sweden)

    Prof. Patty K. Wongpakdee

    2013-06-01

    Full Text Available “Resurfacing Graphics” deals with the subject of unconventional design, with the purpose of engaging the viewer to experience the graphics beyond paper’s passive surface. Unconventional designs serve to reinvigorate people, whose senses are dulled by the typical, printed graphics, which bombard them each day. Today’s cutting-edge designers, illustrators and artists utilize graphics in a unique manner that allows for tactile interaction. Such works serve as valuable teaching models and encourage students to do the following: 1 investigate the trans-disciplines of art and technology; 2 appreciate that this approach can have a positive effect on the environment; 3 examine and research other approaches of design communications and 4 utilize new mediums to stretch the boundaries of artistic endeavor. This paper examines how visuals communicators are “Resurfacing Graphics” by using atypical surfaces and materials such as textile, wood, ceramics and even water. Such non-traditional transmissions of visual language serve to demonstrate student’s overreliance on paper as an outdated medium. With this exposure, students can become forward-thinking, eco-friendly, creative leaders by expanding their creative breadth and continuing the perpetual exploration for new ways to make their mark.

  1. Simultaneous recordings of ocular microtremor and microsaccades with a piezoelectric sensor and a video-oculography system

    Directory of Open Access Journals (Sweden)

    Michael B. McCamy

    2013-02-01

    Full Text Available Our eyes are in continuous motion. Even when we attempt to fix our gaze, we produce so called “fixational eye movements”, which include microsaccades, drift, and ocular microtremor (OMT. Microsaccades, the largest and fastest type of fixational eye movement, shift the retinal image from several dozen to several hundred photoreceptors and have equivalent physical characteristics to saccades, only on a smaller scale (Martinez-Conde, Otero-Millan & Macknik, 2013. OMT occurs simultaneously with drift and is the smallest of the fixational eye movements (∼1 photoreceptor width, >0.5 arcmin, with dominant frequencies ranging from 70 Hz to 103 Hz (Martinez-Conde, Macknik & Hubel, 2004. Due to OMT’s small amplitude and high frequency, the most accurate and stringent way to record it is the piezoelectric transduction method. Thus, OMT studies are far rarer than those focusing on microsaccades or drift. Here we conducted simultaneous recordings of OMT and microsaccades with a piezoelectric device and a commercial infrared video tracking system. We set out to determine whether OMT could help to restore perceptually faded targets during attempted fixation, and we also wondered whether the piezoelectric sensor could affect the characteristics of microsaccades. Our results showed that microsaccades, but not OMT, counteracted perceptual fading. We moreover found that the piezoelectric sensor affected microsaccades in a complex way, and that the oculomotor system adjusted to the stress brought on by the sensor by adjusting the magnitudes of microsaccades.

  2. Evaluation of a new semiautomated external defibrillator technology: a live cases video recording study.

    Science.gov (United States)

    Maes, Frédéric; Marchandise, Sébastien; Boileau, Laurianne; Le Polain de Waroux, Jean-Benoît; Scavée, Christophe

    2015-06-01

    To determine the effect of a new automated external defibrillator (AED) system connected by General Packet Radio Service (GPRS) to an external call centre in assisting novices in a sudden cardiac arrest situation. Prospective, interventional study. Layperson volunteers were first asked to complete a survey about their knowledge and ability to give cardiopulmonary resuscitation (CPR) and use an AED. A simulated cardiac arrest scenario using a CPR manikin was then presented to volunteers. A telephone and semi-AED were available in the same room. The AED was linked to a call centre, which provided real-time information to 'bystanders' and emergency services via GPRS/GPS technology. The scene was videotaped to avoid any interaction with examiners. A standardised check list was used to record correct actions. 85 volunteers completed questionnaires and were recorded. Mean age was 44±16, and 49% were male; 38 (45%) had prior CPR training or felt comfortable intervening in a sudden cardiac arrest victim; 40% felt they could deliver a shock using an AED. During the scenarios, 56 (66%) of the participants used the AED and 53 (62%) successfully delivered an electrical shock. Mean time to defibrillation was 2 min 29 s. Only 24 (28%) participants dialled the correct emergency response number (112); the live-assisted GPRS AED allowed alerted emergency services in 38 other cases. CPR was initiated in 63 (74%) cases, 26 (31%) times without prompting and 37 (44%) times after prompting by the AED. Although knowledge of the general population appears to be inadequate with regard to AED locations and recognition, live-assisted devices with GPS-location may improve emergency care. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  3. Video-based rendering

    CERN Document Server

    Magnor, Marcus A

    2005-01-01

    Driven by consumer-market applications that enjoy steadily increasing economic importance, graphics hardware and rendering algorithms are a central focus of computer graphics research. Video-based rendering is an approach that aims to overcome the current bottleneck in the time-consuming modeling process and has applications in areas such as computer games, special effects, and interactive TV. This book offers an in-depth introduction to video-based rendering, a rapidly developing new interdisciplinary topic employing techniques from computer graphics, computer vision, and telecommunication en

  4. Seizure semiology reflects spread from frontal to temporal lobe: evolution of hyperkinetic to automotor seizures as documented by invasive EEG video recordings.

    Science.gov (United States)

    Tezer, Fadime Irsel; Agan, Kadriye; Borggraefe, Ingo; Noachtar, Soheyl

    2013-09-01

    This patient report demonstrates the importance of seizure evolution in the localising value of seizure semiology. Spread of epileptic activity from frontal to temporal lobe, as demonstrated by invasive recordings, was reflected by change from hyperkinetic movements to arrest of activity with mild oral and manual automatisms. [Published with video sequences].

  5. Three-dimensional representations of complex carbohydrates and polysaccharides--SweetUnityMol: a video game-based computer graphic software.

    Science.gov (United States)

    Pérez, Serge; Tubiana, Thibault; Imberty, Anne; Baaden, Marc

    2015-05-01

    A molecular visualization program tailored to deal with the range of 3D structures of complex carbohydrates and polysaccharides, either alone or in their interactions with other biomacromolecules, has been developed using advanced technologies elaborated by the video games industry. All the specific structural features displayed by the simplest to the most complex carbohydrate molecules have been considered and can be depicted. This concerns the monosaccharide identification and classification, conformations, location in single or multiple branched chains, depiction of secondary structural elements and the essential constituting elements in very complex structures. Particular attention was given to cope with the accepted nomenclature and pictorial representation used in glycoscience. This achievement provides a continuum between the most popular ways to depict the primary structures of complex carbohydrates to visualizing their 3D structures while giving the users many options to select the most appropriate modes of representations including new features such as those provided by the use of textures to depict some molecular properties. These developments are incorporated in a stand-alone viewer capable of displaying molecular structures, biomacromolecule surfaces and complex interactions of biomacromolecules, with powerful, artistic and illustrative rendering methods. They result in an open source software compatible with multiple platforms, i.e., Windows, MacOS and Linux operating systems, web pages, and producing publication-quality figures. The algorithms and visualization enhancements are demonstrated using a variety of carbohydrate molecules, from glycan determinants to glycoproteins and complex protein-carbohydrate interactions, as well as very complex mega-oligosaccharides and bacterial polysaccharides and multi-stranded polysaccharide architectures. © The Author 2014. Published by Oxford University Press. All rights reserved. For permissions, please e

  6. Use of KLV to combine metadata, camera sync, and data acquisition into a single video record

    Science.gov (United States)

    Hightower, Paul

    2015-05-01

    SMPTE has designed in significant data spaces in each frame that may be used to store time stamps and other time sensitive data. There are metadata spaces in both the analog equivalent of the horizontal blanking referred to as the Horizontal Ancillary (HANC) space and in the analog equivalent of the vertical interval blanking lines referred to as the Vertical Ancillary (VANC) space. The HANC space is very crowded with many data types including information about frame rate and format, 16 channels of audio sound bites, copyright controls, billing information and more than 2,000 more elements. The VANC space is relatively unused by cinema and broadcasters which makes it a prime target for use in test, surveillance and other specialized applications. Taking advantage of the SMPTE structures, one can design and implement custom data gathering and recording systems while maintaining full interoperability with standard equipment. The VANC data space can be used to capture image relevant data and can be used to overcome transport latency and diminished image quality introduced by the use of compression.

  7. Identification of Learning Processes by Means of Computer Graphics.

    Science.gov (United States)

    Sorensen, Birgitte Holm

    1993-01-01

    Describes a development project for the use of computer graphics and video in connection with an inservice training course for primary education teachers in Denmark. Topics addressed include research approaches to computers; computer graphics in learning processes; activities relating to computer graphics; the role of the teacher; and student…

  8. Graphic notation

    DEFF Research Database (Denmark)

    Bergstrøm-Nielsen, Carl

    2010-01-01

    Graphic notation is taught to music therapy students at Aalborg University in both simple and elaborate forms. This is a method of depicting music visually, and notations may serve as memory aids, as aids for analysis and reflection, and for communication purposes such as supervision or within...... research work. This article focuses especially on the simple form. It cites and comments examples from a collection by the author. Additionally, the range of purposes as well as didactics is discussed, and bibliographical information is given....

  9. Diurnal variations in tear film break-up time determined in healthy subjects by software-assisted interpretation of tear film video recordings.

    Science.gov (United States)

    Pena-Verdeal, Hugo; García-Resúa, Carlos; Ramos, Lucía; Yebra-Pimentel, Eva; Giráldez, Ma Jesús

    2016-03-01

    This study was designed to examine diurnal variations in tear film break-up time (BUT) and maximum blink interval (MBI) and to assess two different ways of calculating these variables on video recordings of the BUT test interpreted with the help of especially designed software. The repeatability of interpreting BUT video recordings was also addressed. Twenty-six healthy young adults were enrolled after ruling out dry eye according to a battery of tests (ocular surface disease index, McMonnies questionnaire, Schirmer test, phenol red test and corneal staining). BUT and maximum blink interval were determined on video-recordings of the BUT test conducted over a day in four sessions (9.30 am, 12.30 pm, 3.30 pm and 6.30 pm). In each session, the test was repeated three times to give three videos in which three BUT and MBI values were obtained by a masked observer. BUT and MBI were determined by averaging the three measurements and by averaging only the two closest measurements. Finally, two further experienced observers re-examined the videos to assess the repeatability of the BUT measurements made. No diurnal variation in BUT was observed regardless of whether three or two video measurements were averaged. Significant correlation was detected between BUT and MBI. Inter-observer repeatability was better when BUT times were no longer than 15 seconds. Tear film BUT was not influenced by the time of day and moderate to strong correlation with MBI was observed in all four sessions. The software-assisted method proved useful and identified the need to clarify the BUT end-point and to limit the test to 15 seconds to improve observer repeatability. © 2016 Optometry Australia.

  10. Reverse-engineering graphical innovation: an introduction to graphical regimes

    Directory of Open Access Journals (Sweden)

    Dominic Arsenault

    2013-03-01

    Full Text Available Technological innovation in the video games industry is a rich area of research that has barely been explored as of yet. Gamers are always clamoring for novelty and a remedy to the oft-decried “sequelitis” that “plagues” the industry, while game publishers and platform holders secretly plan a next-gen platform to capture the ever-shifting market. In this light, the importance of graphics cannot be understated, as it is usually taken for granted in game historiography that “[g]ame graphics were, and to a large extent still are, the main criteria by which advancing video game technology is benchmarked” (Wolf, 2003, p.53.

  11. Development of fast video recording of plasma interaction with a lithium limiter on T-11M tokamak

    Energy Technology Data Exchange (ETDEWEB)

    Lazarev, V.B., E-mail: v_lazarev@triniti.ru [SSC RF TRINITI Troitsk, Moscow (Russian Federation); Dzhurik, A.S.; Shcherbak, A.N. [SSC RF TRINITI Troitsk, Moscow (Russian Federation); Belov, A.M. [NRC “Kurchatov Institute”, Moscow (Russian Federation)

    2016-11-15

    Highlights: • The paper presents the results of the study of tokamak plasma interaction with lithium capillary-porous system limiters and PFC by high-speed color camera. • Registration of emission near the target in SOL in neutral lithium light and e-folding length for neutral Lithium measurements. • Registration of effect of MHD instabilities on CPS Lithium limiter. • A sequence of frames shows evolution of lithium bubble on the surface of lithium limiter. • View of filament structure near the plasma edge in ohmic mode. - Abstract: A new high-speed color camera with interference filters was installed for fast video recording of plasma-surface interaction with a Lithium limiter on the base of capillary-porous system (CPS) in T-11M tokamak vessel. The paper presents the results of the study of tokamak plasma interaction (frame exposure time up to 4 μs) with CPS Lithium limiter in a stable stationary phase, unstable regimes with internal disruption and results of processing of the image of the light emission around the probe, i.e. e-folding length for neutral Lithium penetration and e-folding length for Lithium ion flux in SOL region.

  12. Slit-lamp management in contact lenses laboratory classes: learning upgrade with monitor visualization of webcam video recordings

    Science.gov (United States)

    Arines, Justo; Gargallo, Ana

    2014-07-01

    The training in the use of the slit lamp has always been difficult for students of the degree in Optics and Optometry. Instruments with associated cameras helps a lot in this task, they allow teachers to observe and control if the students evaluate the eye health appropriately, correct use errors and show them how to do it with a visual demonstration. However, these devices are more expensive than those that do not have an integrated camera connected to a display unit. With the aim to improve students' skills in the management of slit lamp, we have adapted USB HD webcams (Microsoft Lifecam HD-5000) to the objectives of the slit lamps available in our contact lenses laboratory room. The webcams are connected to a PC running Linux Ubuntu 11.0; therefore that is a low-cost device. Our experience shows that single method has several advantages. It allows us to take pictures with a good quality of different conditions of the eye health; we can record videos of eye evaluation and make demonstrations of the instrument. Besides it increases the interactions between students because they could see what their colleagues are doing and take conscious of the mistakes, helping and correcting each others. It is a useful tool in the practical exam too. We think that the method supports the training in optometry practice and increase the students' confidence without a huge outlay.

  13. VAX Professional Workstation goes graphic

    Energy Technology Data Exchange (ETDEWEB)

    Downward, J.G.

    1984-01-01

    The VAX Professional Workstation (VPW) is a collection of programs and procedures designed to provide an integrated work-station environment for the staff at KMS Fusion's research laboratories. During the past year numerous capabilities have been added to VPW, including support for VT125/VT240/4014 graphic workstations, editing windows, and additional desk utilities. Graphics workstation support allows users to create, edit, and modify graph data files, enter the data via a graphic tablet, create simple plots with DATATRIEVE or DECgraph on ReGIS terminals, or elaborate plots with TEKGRAPH on ReGIS or Tektronix terminals. Users may assign display error bars to the data and interactively plot it in a variety of ways. Users also can create and display viewgraphs. Hard copy output for a large network of office terminals is obtained by multiplexing each terminal's video output into a recently developed video multiplexer front ending a single channel video hard copy unit.

  14. Quasi-graphic matroids

    OpenAIRE

    Geelen, Jim; Gerards, Bert; Whittle, Geoff

    2015-01-01

    htmlabstractFrame matroids and lifted-graphic matroids are two interesting generalizations of graphic matroids. Here we introduce a new generalization, quasi-graphic matroids, that unifies these two existing classes. Unlike frame matroids and lifted-graphic matroids, it is easy to certify that a matroid is quasi-graphic. The main result of the paper is that every 3-connected representable quasi-graphic matroid is either a lifted-graphic matroid or a rame matroid.

  15. Video visual analytics

    OpenAIRE

    Höferlin, Markus Johannes

    2013-01-01

    The amount of video data recorded world-wide is tremendously growing and has already reached hardly manageable dimensions. It originates from a wide range of application areas, such as surveillance, sports analysis, scientific video analysis, surgery documentation, and entertainment, and its analysis represents one of the challenges in computer science. The vast amount of video data renders manual analysis by watching the video data impractical. However, automatic evaluation of video material...

  16. The anxiogenic video-recorded Stroop Color-Word Test: psychological and physiological alterations and effects of diazepam.

    Science.gov (United States)

    Teixeira-Silva, Flavia; Prado, Gabriela Bordini; Ribeiro, Lídia Christine Goulart; Leite, José Roberto

    2004-09-15

    From among the few human experimental models that can be used to predict the clinical activity of new anxiolytic drugs, the video-recorded Stroop Color-Word Test (VRSCWT), which uses subjective scales to evaluate anxious states, is notable for its simplicity. However, considering that the choice of treatment for anxiety disorders is heavily dependent on the level of somatic symptomatology, a quantitative evaluation of the physiological alterations elicited by the anxiogenic situation of the VRSCWT would also be of great interest. In the present study, 36 healthy male and female volunteers were submitted to either the VRSCWT or to a nonanxiogenic test. The results showed that, as well as a sensation of anxiety, the VRSCWT elicited increases in heart rate and gastrocnemius tension. Subsequently, a further 48 healthy men and women were randomly assigned to three treatments: placebo, 5 and 10 mg of diazepam, and were submitted to the VRSCWT. The results showed that in men, diazepam blocked the feeling of anxiety elicited by the test, although it did not prevent the physiological alterations, while in women, there was no response to the anxiolytic action of the drug. Taken as a whole, these results suggest that the VRSCWT is an efficient method of inducing anxiety experimentally. It is able to elicit observable psychological and physiological alterations and can detect the blocking, by an anxiolytic, of the feelings of anxiety in healthy men. Furthermore, the results suggest that the neural pathways for the control of the psychological and physiological manifestations of anxiety may be separate. This study also draws attention to the fact that gender is an important variable in the evaluation of anxiolytic drugs.

  17. Design Graphics

    Science.gov (United States)

    1990-01-01

    A mathematician, David R. Hedgley, Jr. developed a computer program that considers whether a line in a graphic model of a three-dimensional object should or should not be visible. Known as the Hidden Line Computer Code, the program automatically removes superfluous lines and displays an object from a specific viewpoint, just as the human eye would see it. An example of how one company uses the program is the experience of Birdair which specializes in production of fabric skylights and stadium covers. The fabric called SHEERFILL is a Teflon coated fiberglass material developed in cooperation with DuPont Company. SHEERFILL glazed structures are either tension structures or air-supported tension structures. Both are formed by patterned fabric sheets supported by a steel or aluminum frame or cable network. Birdair uses the Hidden Line Computer Code, to illustrate a prospective structure to an architect or owner. The program generates a three- dimensional perspective with the hidden lines removed. This program is still used by Birdair and continues to be commercially available to the public.

  18. Initial evaluation of prospective cardiac triggering using photoplethysmography signals recorded with a video camera compared to pulse oximetry and electrocardiography at 7T MRI.

    Science.gov (United States)

    Spicher, Nicolai; Kukuk, Markus; Maderwald, Stefan; Ladd, Mark E

    2016-11-24

    Accurate synchronization between magnetic resonance imaging data acquisition and a subject's cardiac activity ("triggering") is essential for reducing image artifacts but conventional, contact-based methods for this task are limited by several factors, including preparation time, patient inconvenience, and susceptibility to signal degradation. The purpose of this work is to evaluate the performance of a new contact-free triggering method developed with the aim to eventually replace conventional methods in non-cardiac imaging applications. In this study, the method's performance is evaluated in the context of 7 Tesla non-enhanced angiography of the lower extremities. Our main contribution is a basic algorithm capable of estimating in real-time the phase of the cardiac cycle from reflection photoplethysmography signals obtained from skin color variations of the forehead recorded with a video camera. Instead of finding the algorithm's parameters heuristically, they were optimized using videos of the forehead as well as electrocardiography and pulse oximetry signals that were recorded from eight healthy volunteers in and outside the scanner, with and without active radio frequency and gradient coils. Based on the video characteristics, synthetic signals were generated and the "best available" values of an objective function were determined using mathematical optimization. The performance of the proposed method with optimized algorithm parameters was evaluated by applying it to the recorded videos and comparing the computed triggers to those of contact-based methods. Additionally, the method was evaluated by using its triggers for acquiring images from a healthy volunteer and comparing the result to images obtained using pulse oximetry triggering. During evaluation of the videos recorded inside the bore with active radio frequency and gradient coils, the pulse oximeter triggers were labeled in 62.5% as "potentially usable" for cardiac triggering, the electrocardiography

  19. Imagined Spaces: Motion Graphics in Performance Spaces

    DEFF Research Database (Denmark)

    Steijn, Arthur

    2016-01-01

    In this chapter I introduce the first steps in my work with adjoining and developing concepts relevant to the study and practical design of motion graphics in spatial experience design; performance, event and exhibition design. Based on a presentation of a practical case where motion graphics...... are used in performance design, the chapter portrays the work in progress on a design model for designing spatial experiences in performances through the use of motion graphics. The purpose of the model is to systematize and categorize different design elements e.g. space, line and shape, tone, colour......, space, movement, and rhythm, in relation to e.g. expression and atmosphere, to be considered when designing and analyzing motion graphics in performance design, one kind of spatial experience design. The analysis of the case, here a dance performance utilizing video projected motion graphics, isbe done...

  20. The Effect of Rubric-Guided, Focused, Personalized Coaching Sessions and Video-Recorded Presentations on Teaching Skills Among Fourth-Year Medical Students: A Pilot Study.

    Science.gov (United States)

    Tchekmedyian, Vatche; Shields, Helen M; Pelletier, Stephen R; Pazo, Valeria C

    2017-11-01

    As medical students become residents, teaching becomes an expected and integral responsibility. Yet, training-for-teaching opportunities are lacking. In 2014, the authors designed a pilot study using rubric-guided, focused, personalized coaching sessions and video-recorded presentations to improve student teaching skills among fourth-year students at Harvard Medical School. In 2014-2015, the authors recruited students from an elective on how to tutor preclinical students for the pilot, which consisted of four phases: a precoaching teaching presentation, a 30- to 45-minute coaching session, a postcoaching teaching presentation, and blinded reviewer ratings. Students' pre- and postcoaching presentations were video recorded. Using a scoring rubric for 15 teaching skills, students rated their pre- and postcoaching videos. Blinded reviewers also rated the pre- and postcoaching presentations using the same rubric with an additional category to gauge their overall impression. Fourteen students completed all four phases of the pilot. Students' ratings demonstrated statistically significant improvement in several teaching skills, including presentation content (P rubric, using coaching in different teaching settings, addressing the interventions' generalizability, training coaches, and performing additional evaluations.

  1. The Effect of Theme Preference on Academic Word List Use: A Case for Smartphone Video Recording Feature

    Science.gov (United States)

    Gromik, Nicolas A.

    2017-01-01

    Sixty-seven Japanese English as a Second Language undergraduate learners completed one smartphone video production per week for 12 weeks, based on a teacher-selected theme. Designed as a case study for this specific context, data from students' oral performances was analyzed on a weekly basis for their use of the Academic Word List (AWL). A…

  2. Observing Observers: Using Video to Prompt and Record Reflections on Teachers' Pedagogies in Four Regions of Canada

    Science.gov (United States)

    Reid, David A; Simmt, Elaine; Savard, Annie; Suurtamm, Christine; Manuel, Dominic; Lin, Terry Wan Jung; Quigley, Brenna; Knipping, Christine

    2015-01-01

    Regional differences in performance in mathematics across Canada prompted us to conduct a comparative study of middle-school mathematics pedagogy in four regions. We built on the work of Tobin, using a theoretical framework derived from the work of Maturana. In this paper, we describe the use of video as part of the methodology used. We used…

  3. Quasi-graphic matroids

    NARCIS (Netherlands)

    J. Geelen (Jim); A.M.H. Gerards (Bert); G. Whittle (Geoff)

    2015-01-01

    htmlabstractFrame matroids and lifted-graphic matroids are two interesting generalizations of graphic matroids. Here we introduce a new generalization, quasi-graphic matroids, that unifies these two existing classes. Unlike frame matroids and lifted-graphic matroids, it is easy to certify that a

  4. Electromyography-based seizure detector: Preliminary results comparing a generalized tonic-clonic seizure detection algorithm to video-EEG recordings.

    Science.gov (United States)

    Szabó, Charles Ákos; Morgan, Lola C; Karkar, Kameel M; Leary, Linda D; Lie, Octavian V; Girouard, Michael; Cavazos, José E

    2015-09-01

    Automatic detection of generalized tonic-clonic seizures (GTCS) will facilitate patient monitoring and early intervention to prevent comorbidities, recurrent seizures, or death. Brain Sentinel (San Antonio, Texas, USA) developed a seizure-detection algorithm evaluating surface electromyography (sEMG) signals during GTCS. This study aims to validate the seizure-detection algorithm using inpatient video-electroencephalography (EEG) monitoring. sEMG was recorded unilaterally from the biceps/triceps muscles in 33 patients (17white/16 male) with a mean age of 40 (range 14-64) years who were admitted for video-EEG monitoring. Maximum voluntary biceps contraction was measured in each patient to set up the baseline physiologic muscle threshold. The raw EMG signal was recorded using conventional amplifiers, sampling at 1,024 Hz and filtered with a 60 Hz noise detection algorithm before it was processed with three band-pass filters at pass frequencies of 3-40, 130-240, and 300-400 Hz. A seizure-detection algorithm utilizing Hotelling's T-squared power analysis of compound muscle action potentials was used to identify GTCS and correlated with video-EEG recordings. In 1,399 h of continuous recording, there were 196 epileptic seizures (21 GTCS, 96 myoclonic, 28 tonic, 12 absence, and 42 focal seizures with or without loss of awareness) and 4 nonepileptic spells. During retrospective, offline evaluation of sEMG from the biceps alone, the algorithm detected 20 GTCS (95%) in 11 patients, averaging within 20 s of electroclinical onset of generalized tonic activity, as identified by video-EEG monitoring. Only one false-positive detection occurred during the postictal period following a GTCS, but false alarms were not triggered by other seizure types or spells. Brain Sentinel's seizure detection algorithm demonstrated excellent sensitivity and specificity for identifying GTCS recorded in an epilepsy monitoring unit. Further studies are needed in larger patient groups, including

  5. Color spaces in digital video

    Energy Technology Data Exchange (ETDEWEB)

    Gaunt, R.

    1997-05-01

    Whether it`s photography, computer graphics, publishing, or video; each medium has a defined color space, or gamut, which defines the extent that a given set of RGB colors can be mixed. When converting from one medium to another, an image must go through some form of conversion which maps colors into the destination color space. The conversion process isn`t always straight forward, easy, or reversible. In video, two common analog composite color spaces are Y`tjv (used in PAL) and Y`IQ (used in NTSC). These two color spaces have been around since the beginning of color television, and are primarily used in video transmission. Another analog scheme used in broadcast studios is Y`, R`-Y`, B`-Y` (used in Betacam and Mll) which is a component format. Y`, R`-Y`,B`-Y` maintains the color information of RGB but in less space. From this, the digital component video specification, ITU-Rec. 601-4 (formerly CCIR Rec. 601) was based. The color space for Rec. 601 is symbolized as Y`CbCr. Digital video formats such as DV, Dl, Digital-S, etc., use Rec. 601 to define their color gamut. Digital composite video (for D2 tape) is digitized analog Y`UV and is seeing decreased use. Because so much information is contained in video, segments of any significant length usually require some form of data compression. All of the above mentioned analog video formats are a means of reducing the bandwidth of RGB video. Video bulk storage devices, such as digital disk recorders, usually store frames in Y`CbCr format, even if no other compression method is used. Computer graphics and computer animations originate in RGB format because RGB must be used to calculate lighting and shadows. But storage of long animations in RGB format is usually cost prohibitive and a 30 frame-per-second data rate of uncompressed RGB is beyond most computers. By taking advantage of certain aspects of the human visual system, true color 24-bit RGB video images can be compressed with minimal loss of visual information

  6. Sleep disorders in children with Attention-Deficit/Hyperactivity Disorder (ADHD) recorded overnight by video-polysomnography.

    Science.gov (United States)

    Silvestri, Rosalia; Gagliano, Antonella; Aricò, Irene; Calarese, Tiziana; Cedro, Clemente; Bruni, Oliviero; Condurso, Rosaria; Germanò, Eva; Gervasi, Giuseppe; Siracusano, Rosamaria; Vita, Giuseppe; Bramanti, Placido

    2009-12-01

    To outline specific sleep disturbances in different clinical subsets of Attention Deficit/Hyperactivity Disorder (ADHD) and to confirm, by means of nocturnal video-polysomnography (video-PSG), a variety of sleep disorders in ADHD besides the classically described periodic leg movement disorder (PLMD), restless legs syndrome (RLS) and sleep related breathing disorder (SRBD). Fifty-five ADHD children (47 M, 8F; mean age=8.9 y) were included: 16 had Inattentive and 39 Hyperactive/Impulsive or Combined ADHD subtype. Behavior assessment by Conners and SNAP-IV Scales, a structured sleep interview and a nocturnal video-PSG were administered. Most children/parents reported disturbed, fragmentary sleep at night; complaints were motor restlessness (50%), sleep walking (47.6%), night terrors (38%), confusional arousals (28.5%), snoring (21.4%), and leg discomfort at night associated with RLS (11.9%). There is a significant difference (p value <0.05 or <0.001) in almost all the studied sleep variables between ADHD children and controls. International RLS Rating Scale scoring, Periodic Limb Movements during Sleep (PLMS) and Wake (PLMW) indexes, hyperactivity and opposition scores and ADHD subtype appear related. Different sleep disorders seem to address specific ADHD phenotypes and correlate with severity of symptoms as in sleep related movement disorders occurring in Hyperactive/Impulsive and Combined ADHD subtypes. Besides, an abnormality of the arousal process in slow wave sleep with consequent abnormal prevalence of disorders of arousal possibly enhanced by SRBD has also been detected in 52% of our sample. This study underlines the opportunity to propose and promote the inclusion of sleep studies, possibly by video-PSG, as part of the diagnostic screening for ADHD. This strategy could address the diagnosis and treatment of different specific ADHD phenotypic expressions that might be relevant to children's symptoms and contribute to ADHD severity.

  7. A Physical Activity Reference Data-Set Recorded from Older Adults Using Body-Worn Inertial Sensors and Video Technology—The ADAPT Study Data-Set

    Science.gov (United States)

    Bourke, Alan Kevin; Ihlen, Espen Alexander F.; Bergquist, Ronny; Wik, Per Bendik; Vereijken, Beatrix; Helbostad, Jorunn L.

    2017-01-01

    Physical activity monitoring algorithms are often developed using conditions that do not represent real-life activities, not developed using the target population, or not labelled to a high enough resolution to capture the true detail of human movement. We have designed a semi-structured supervised laboratory-based activity protocol and an unsupervised free-living activity protocol and recorded 20 older adults performing both protocols while wearing up to 12 body-worn sensors. Subjects’ movements were recorded using synchronised cameras (≥25 fps), both deployed in a laboratory environment to capture the in-lab portion of the protocol and a body-worn camera for out-of-lab activities. Video labelling of the subjects’ movements was performed by five raters using 11 different category labels. The overall level of agreement was high (percentage of agreement >90.05%, and Cohen’s Kappa, corrected kappa, Krippendorff’s alpha and Fleiss’ kappa >0.86). A total of 43.92 h of activities were recorded, including 9.52 h of in-lab and 34.41 h of out-of-lab activities. A total of 88.37% and 152.01% of planned transitions were recorded during the in-lab and out-of-lab scenarios, respectively. This study has produced the most detailed dataset to date of inertial sensor data, synchronised with high frame-rate (≥25 fps) video labelled data recorded in a free-living environment from older adults living independently. This dataset is suitable for validation of existing activity classification systems and development of new activity classification algorithms. PMID:28287449

  8. A Physical Activity Reference Data-Set Recorded from Older Adults Using Body-Worn Inertial Sensors and Video Technology-The ADAPT Study Data-Set.

    Science.gov (United States)

    Bourke, Alan Kevin; Ihlen, Espen Alexander F; Bergquist, Ronny; Wik, Per Bendik; Vereijken, Beatrix; Helbostad, Jorunn L

    2017-03-10

    Physical activity monitoring algorithms are often developed using conditions that do not represent real-life activities, not developed using the target population, or not labelled to a high enough resolution to capture the true detail of human movement. We have designed a semi-structured supervised laboratory-based activity protocol and an unsupervised free-living activity protocol and recorded 20 older adults performing both protocols while wearing up to 12 body-worn sensors. Subjects' movements were recorded using synchronised cameras (≥25 fps), both deployed in a laboratory environment to capture the in-lab portion of the protocol and a body-worn camera for out-of-lab activities. Video labelling of the subjects' movements was performed by five raters using 11 different category labels. The overall level of agreement was high (percentage of agreement >90.05%, and Cohen's Kappa, corrected kappa, Krippendorff's alpha and Fleiss' kappa >0.86). A total of 43.92 h of activities were recorded, including 9.52 h of in-lab and 34.41 h of out-of-lab activities. A total of 88.37% and 152.01% of planned transitions were recorded during the in-lab and out-of-lab scenarios, respectively. This study has produced the most detailed dataset to date of inertial sensor data, synchronised with high frame-rate (≥25 fps) video labelled data recorded in a free-living environment from older adults living independently. This dataset is suitable for validation of existing activity classification systems and development of new activity classification algorithms.

  9. A Physical Activity Reference Data-Set Recorded from Older Adults Using Body-Worn Inertial Sensors and Video Technology—The ADAPT Study Data-Set

    Directory of Open Access Journals (Sweden)

    Alan Kevin Bourke

    2017-03-01

    Full Text Available Physical activity monitoring algorithms are often developed using conditions that do not represent real-life activities, not developed using the target population, or not labelled to a high enough resolution to capture the true detail of human movement. We have designed a semi-structured supervised laboratory-based activity protocol and an unsupervised free-living activity protocol and recorded 20 older adults performing both protocols while wearing up to 12 body-worn sensors. Subjects’ movements were recorded using synchronised cameras (≥25 fps, both deployed in a laboratory environment to capture the in-lab portion of the protocol and a body-worn camera for out-of-lab activities. Video labelling of the subjects’ movements was performed by five raters using 11 different category labels. The overall level of agreement was high (percentage of agreement >90.05%, and Cohen’s Kappa, corrected kappa, Krippendorff’s alpha and Fleiss’ kappa >0.86. A total of 43.92 h of activities were recorded, including 9.52 h of in-lab and 34.41 h of out-of-lab activities. A total of 88.37% and 152.01% of planned transitions were recorded during the in-lab and out-of-lab scenarios, respectively. This study has produced the most detailed dataset to date of inertial sensor data, synchronised with high frame-rate (≥25 fps video labelled data recorded in a free-living environment from older adults living independently. This dataset is suitable for validation of existing activity classification systems and development of new activity classification algorithms.

  10. Portable graphics system. [CGS

    Energy Technology Data Exchange (ETDEWEB)

    Kellner, R.G.; Reed, T.N.; Solem, A.V.

    1978-01-01

    LASL implemented a graphics system designed to support all graphics devices in all operating environments at LASL. This system, Common Graphics System (CGS), supports level one of the graphics standard proposed by the ACM/SIGGRAPH Graphics Standards Planning Committee. To make the system immediately available to existing application programs, the older LASL high-level graphics routines were implemented, use of the system primitives; device independence and portability with a minimum of change were achieved. CGS is now available in six operating environments of two different word lengths and supports four graphics devices. It supports a pseudodevice file that may be postprocessed and edited for a particular graphics device, or it can generate device-dependent graphics output directly. It supports multiple display surfaces for multiple graphics devices simultaneously. The system is structured to isolate operating system dependencies and graphics device dependencies. Abstract concepts of graphics I/O and operating system functions were implemented. The device drivers may be called by the postprocessor or used directly by the applications program. Multiple devices may be loaded simultaneously or overlaid. The clean interfaces and parallel structures make it easy to support new graphics devices. The system is written in the RATFOR (Rational FORTRAN) language, which supports control structure statements and macro expansion. The output of the RATFOR preprocessor is ANSI FORTRAN. The system is maintained as a single source program from which each version can be extracted automatically. The graphics system is thus the same in all operating environments.

  11. A Peer-Reviewed Instructional Video is as Effective as a Standard Recorded Didactic Lecture in Medical Trainees Performing Chest Tube Insertion: A Randomized Control Trial.

    Science.gov (United States)

    Saun, Tomas J; Odorizzi, Scott; Yeung, Celine; Johnson, Marjorie; Bandiera, Glen; Dev, Shelly P

    Online medical education resources are becoming an increasingly used modality and many studies have demonstrated their efficacy in procedural instruction. This study sought to determine whether a standardized online procedural video is as effective as a standard recorded didactic teaching session for chest tube insertion. A randomized control trial was conducted. Participants were taught how to insert a chest tube with either a recorded didactic teaching session, or a New England Journal of Medicine (NEJM) video. Participants filled out a questionnaire before and after performing the procedure on a cadaver, which was filmed and assessed by 2 blinded evaluators using a standardized tool. Western University, London, Ontario. Level of clinical care: institutional. A total of 30 fourth-year medical students from 2 graduating classes at the Schulich School of Medicine & Dentistry were screened for eligibility. Two students did not complete the study and were excluded. There were 13 students in the NEJM group, and 15 students in the didactic group. The NEJM group׳s average score was 45.2% (±9.56) on the prequestionnaire, 67.7% (±12.9) for the procedure, and 60.1% (±7.65) on the postquestionnaire. The didactic group׳s average score was 42.8% (±10.9) on the prequestionnaire, 73.7% (±9.90) for the procedure, and 46.5% (±7.46) on the postquestionnaire. There was no difference between the groups on the prequestionnaire (Δ + 2.4%; 95% CI: -5.16 to 9.99), or the procedure (Δ -6.0%; 95% CI: -14.6 to 2.65). The NEJM group had better scores on the postquestionnaire (Δ + 11.15%; 95% CI: 3.74-18.6). The NEJM video was as effective as video-recorded didactic training for teaching the knowledge and technical skills essential for chest tube insertion. Participants expressed high satisfaction with this modality. It may prove to be a helpful adjunct to standard instruction on the topic. Copyright © 2017 Association of Program Directors in Surgery. Published by Elsevier Inc

  12. Marine snow, zooplankton and thin layers: indications of a trophic link from small-scale sampling with the Video Plankton Recorder

    DEFF Research Database (Denmark)

    Möller, Klas O.; St. John, Michael; Temming, Axel

    2012-01-01

    sampling does not collect marine snow quantitatively and cannot resolve so-called thin layers in which this interaction occurs. Hence, field evidence for the importance of the marine snow−zooplankton link is scarce. Here we employed a Video Plankton Recorder (VPR) to quantify small-scale (metres) vertical...... distribution patterns of fragile marine snow aggregates and zooplankton in the Baltic Sea during late spring 2002. By using this non-invasive optical sampling technique we recorded a peak in copepod abundance (ca. 18 ind. l−1) associated with a pronounced thin layer (50 to 55 m) of marine snow (maximum...... to aggregates and demonstrating feeding behaviour, which also suggests a trophic interaction. Our observations highlight the potential significance of marine snow in marine ecosystems and its potential as a food resource for various trophic levels, from bacteria up to fish...

  13. Comparison between the IT-MAIS and MUSS questionnaires with video-recording for evaluation of children who may receive a cochlear implantation.

    Science.gov (United States)

    Pinto, Elaine Soares Monteiro; Lacerda, Cristina Broglia de Feitosa; Porto, Paulo Rogério Catanhede

    2008-01-01

    There is a great difficulty in determining earlier on which children would benefit or not from cochlear implants, especially because of their young age, the responses they give are very subtle. To compare results obtained through video-recording of the interactions of children who may receive a cochlear implant with the results obtained through evaluation protocols. Seven children, with an average age of 39.7 months, with profound hearing loss were selected for the study. IT-MAIS and MUSS questionnaires were given to their parents/guardians of these children and the results were compared with the observation of the video-recordings. It was possible to observe that the data is compatible with the auditory stages. However, the MUSS questionnaire data gathered during playful activities is very different . The questionnaire only takes into consideration the use of verbal language and therefore the majority of the evaluated children inevitably score low. Observing children play allows us to trace a better profile of linguistic behavior and aspects relative to language, that may presented differences in the questionnaire.

  14. Graphical Rasch models

    DEFF Research Database (Denmark)

    Kreiner, Svend; Christensen, Karl Bang

    Rasch models; Partial Credit models; Rating Scale models; Item bias; Differential item functioning; Local independence; Graphical models......Rasch models; Partial Credit models; Rating Scale models; Item bias; Differential item functioning; Local independence; Graphical models...

  15. Repellency Awareness Graphic

    Science.gov (United States)

    Companies can apply to use the voluntary new graphic on product labels of skin-applied insect repellents. This graphic is intended to help consumers easily identify the protection time for mosquitoes and ticks and select appropriately.

  16. Veterans Crisis Line: Videos About Reaching out for Help

    Medline Plus

    Full Text Available ... Involved Crisis Centers About Be There Show You Care Find Resources Graphic Generator Toolkit Signs of Crisis ... out for help. Bittersweet More Videos from Veterans Health Administration Watch additional videos about getting help. Be ...

  17. Bayesian Graphical Models

    DEFF Research Database (Denmark)

    Jensen, Finn Verner; Nielsen, Thomas Dyhre

    2016-01-01

    Mathematically, a Bayesian graphical model is a compact representation of the joint probability distribution for a set of variables. The most frequently used type of Bayesian graphical models are Bayesian networks. The structural part of a Bayesian graphical model is a graph consisting of nodes...

  18. Video library for video imaging detection at intersection stop lines.

    Science.gov (United States)

    2010-04-01

    The objective of this activity was to record video that could be used for controlled : evaluation of video image vehicle detection system (VIVDS) products and software upgrades to : existing products based on a list of conditions that might be diffic...

  19. Graphics gems II

    CERN Document Server

    Arvo, James

    1991-01-01

    Graphics Gems II is a collection of articles shared by a diverse group of people that reflect ideas and approaches in graphics programming which can benefit other computer graphics programmers.This volume presents techniques for doing well-known graphics operations faster or easier. The book contains chapters devoted to topics on two-dimensional and three-dimensional geometry and algorithms, image processing, frame buffer techniques, and ray tracing techniques. The radiosity approach, matrix techniques, and numerical and programming techniques are likewise discussed.Graphics artists and comput

  20. Graphical Models with R

    DEFF Research Database (Denmark)

    Højsgaard, Søren; Edwards, David; Lauritzen, Steffen L.

    Graphical models in their modern form have been around since the late 1970s and appear today in many areas of the sciences. Along with the ongoing developments of graphical models, a number of different graphical modeling software programs have been written over the years. In recent years many...... of these software developments have taken place within the R community, either in the form of new packages or by providing an R ingerface to existing software. This book attempts to give the reader a gentle introduction to graphical modeling using R and the main features of some of these packages. In addition......, the book provides examples of how more advanced aspects of graphical modeling can be represented and handled within R. Topics covered in the seven chapters include graphical models for contingency tables, Gaussian and mixed graphical models, Bayesian networks and modeling high dimensional data...

  1. Unusual features of negative leaders' development in natural lightning, according to simultaneous records of current, electric field, luminosity, and high-speed video

    Science.gov (United States)

    Guimaraes, Miguel; Arcanjo, Marcelo; Murta Vale, Maria Helena; Visacro, Silverio

    2017-02-01

    The development of downward and upward leaders that formed two negative cloud-to-ground return strokes in natural lightning, spaced only about 200 µs apart and terminating on ground only a few hundred meters away, was monitored at Morro do Cachimbo Station, Brazil. The simultaneous records of current, close electric field, relative luminosity, and corresponding high-speed video frames (sampling rate of 20,000 frames per second) reveal that the initiation of the first return stroke interfered in the development of the second negative leader, leading it to an apparent continuous development before the attachment, without stepping, and at a regular two-dimensional speed. Based on the experimental data, the formation processes of the two return strokes are discussed, and plausible interpretations for their development are provided.

  2. Gastroesophageal Reflux and Body Movement in Infants: Investigations with Combined Impedance-pH and Synchronized Video Recording

    Directory of Open Access Journals (Sweden)

    Tobias G. Wenzl

    2011-01-01

    Full Text Available The aim of this paper was to investigate the temporal association of gastroesophageal reflux (GER and body movement in infants. GER were registered by combined impedance-pH, documentation of body movement was done by video. Videorecording time (Vt was divided into “resting time” and “movement time” and analyzed for occurrence of GER. Association was defined as movement 1 minute before/after the beginning of a GER. Statistical evaluation was by Fisher's exact test. In 15 infants, 341 GER were documented during Vt (86 hours. 336 GER (99% were associated with movement, only 5 episodes (1% occured during resting time. Movement was significantly associated with the occurrence of GER (<.0001. There is a strong temporal association between GER and body movement in infants. However, a clear distinction between cause and effect could not be made with the chosen study design. Combined impedance-pH has proven to be the ideal technique for this approach.

  3. The video violence debate.

    Science.gov (United States)

    Lande, R G

    1993-04-01

    Some researchers and theorists are convinced that graphic scenes of violence on television and in movies are inextricably linked to human aggression. Others insist that a link has not been conclusively established. This paper summarizes scientific studies that have informed these two perspectives. Although many instances of children and adults imitating video violence have been documented, no court has imposed liability for harm allegedly resulting from a video program, an indication that considerable doubt still exists about the role of video violence in stimulating human aggression. The author suggests that a small group of vulnerable viewers are probably more impressionable and therefore more likely to suffer deleterious effects from violent programming. He proposes that research on video violence be narrowed to identifying and describing the vulnerable viewer.

  4. Combining Recurrence Analysis and Automatic Movement Extraction from Video Recordings to Study Behavioral Coupling in Face-to-Face Parent-Child Interactions.

    Science.gov (United States)

    López Pérez, David; Leonardi, Giuseppe; Niedźwiecka, Alicja; Radkowska, Alicja; Rączaszek-Leonardi, Joanna; Tomalski, Przemysław

    2017-01-01

    The analysis of parent-child interactions is crucial for the understanding of early human development. Manual coding of interactions is a time-consuming task, which is a limitation in many projects. This becomes especially demanding if a frame-by-frame categorization of movement needs to be achieved. To overcome this, we present a computational approach for studying movement coupling in natural settings, which is a combination of a state-of-the-art automatic tracker, Tracking-Learning-Detection (TLD), and nonlinear time-series analysis, Cross-Recurrence Quantification Analysis (CRQA). We investigated the use of TLD to extract and automatically classify movement of each partner from 21 video recordings of interactions, where 5.5-month-old infants and mothers engaged in free play in laboratory settings. As a proof of concept, we focused on those face-to-face episodes, where the mother animated an object in front of the infant, in order to measure the coordination between the infants' head movement and the mothers' hand movement. We also tested the feasibility of using such movement data to study behavioral coupling between partners with CRQA. We demonstrate that movement can be extracted automatically from standard definition video recordings and used in subsequent CRQA to quantify the coupling between movement of the parent and the infant. Finally, we assess the quality of this coupling using an extension of CRQA called anisotropic CRQA and show asymmetric dynamics between the movement of the parent and the infant. When combined these methods allow automatic coding and classification of behaviors, which results in a more efficient manner of analyzing movements than manual coding.

  5. Collaborative Video Sketching

    DEFF Research Database (Denmark)

    Henningsen, Birgitte; Gundersen, Peter Bukovica; Hautopp, Heidi

    2017-01-01

    This paper introduces to what we define as a collaborative video sketching process. This process links various sketching techniques with digital storytelling approaches and creative reflection processes in video productions. Traditionally, sketching has been used by designers across various...... forms and through empirical examples, we present and discuss the video recording of sketching sessions, as well as development of video sketches by rethinking, redoing and editing the recorded sessions. The empirical data is based on workshop sessions with researchers and students from universities...... and university colleges and primary and secondary school teachers. As researchers, we have had different roles in these action research case studies where various video sketching techniques were applied.The analysis illustrates that video sketching can take many forms, and two common features are important...

  6. Storyboard dalam Pembuatan Motion Graphic

    Directory of Open Access Journals (Sweden)

    Satrya Mahardhika

    2013-10-01

    Full Text Available Motion graphics is one category in the animation that makes animation with lots of design elements in each component. Motion graphics needs long process including preproduction, production, and postproduction. Preproduction has an important role so that the next stage may provide guidance or instructions for the production process or the animation process. Preproduction includes research, making the story, script, screenplay, character, environment design and storyboards. The storyboard will be determined through camera angles, blocking, sets, and many supporting roles involved in a scene. Storyboard is also useful as a production reference in recording or taping each scene in sequence or as an efficient priority. The example used is an ad creation using motion graphic animation storyboard which has an important role as a blueprint for every scene and giving instructions to make the transition movement, layout, blocking, and defining camera movement that everything should be done periodically in animation production. Planning before making the animation or motion graphic will make the job more organized, presentable, and more efficient in the process.  

  7. Intelligent Computer Graphics 2012

    CERN Document Server

    Miaoulis, Georgios

    2013-01-01

    In Computer Graphics, the use of intelligent techniques started more recently than in other research areas. However, during these last two decades, the use of intelligent Computer Graphics techniques is growing up year after year and more and more interesting techniques are presented in this area.   The purpose of this volume is to present current work of the Intelligent Computer Graphics community, a community growing up year after year. This volume is a kind of continuation of the previously published Springer volumes “Artificial Intelligence Techniques for Computer Graphics” (2008), “Intelligent Computer Graphics 2009” (2009), “Intelligent Computer Graphics 2010” (2010) and “Intelligent Computer Graphics 2011” (2011).   Usually, this kind of volume contains, every year, selected extended papers from the corresponding 3IA Conference of the year. However, the current volume is made from directly reviewed and selected papers, submitted for publication in the volume “Intelligent Computer Gr...

  8. Deterministic Graphical Games Revisited

    DEFF Research Database (Denmark)

    Andersson, Daniel; Hansen, Kristoffer Arnsfelt; Miltersen, Peter Bro

    2008-01-01

    We revisit the deterministic graphical games of Washburn. A deterministic graphical game can be described as a simple stochastic game (a notion due to Anne Condon), except that we allow arbitrary real payoffs but disallow moves of chance. We study the complexity of solving deterministic graphical...... games and obtain an almost-linear time comparison-based algorithm for computing an equilibrium of such a game. The existence of a linear time comparison-based algorithm remains an open problem....

  9. Graphical Models with R

    CERN Document Server

    Højsgaard, Søren; Lauritzen, Steffen

    2012-01-01

    Graphical models in their modern form have been around since the late 1970s and appear today in many areas of the sciences. Along with the ongoing developments of graphical models, a number of different graphical modeling software programs have been written over the years. In recent years many of these software developments have taken place within the R community, either in the form of new packages or by providing an R interface to existing software. This book attempts to give the reader a gentle introduction to graphical modeling using R and the main features of some of these packages. In add

  10. The computer graphics metafile

    CERN Document Server

    Henderson, LR; Shepherd, B; Arnold, D B

    1990-01-01

    The Computer Graphics Metafile deals with the Computer Graphics Metafile (CGM) standard and covers topics ranging from the structure and contents of a metafile to CGM functionality, metafile elements, and real-world applications of CGM. Binary Encoding, Character Encoding, application profiles, and implementations are also discussed. This book is comprised of 18 chapters divided into five sections and begins with an overview of the CGM standard and how it can meet some of the requirements for storage of graphical data within a graphics system or application environment. The reader is then intr

  11. The computer graphics interface

    CERN Document Server

    Steinbrugge Chauveau, Karla; Niles Reed, Theodore; Shepherd, B

    2014-01-01

    The Computer Graphics Interface provides a concise discussion of computer graphics interface (CGI) standards. The title is comprised of seven chapters that cover the concepts of the CGI standard. Figures and examples are also included. The first chapter provides a general overview of CGI; this chapter covers graphics standards, functional specifications, and syntactic interfaces. Next, the book discusses the basic concepts of CGI, such as inquiry, profiles, and registration. The third chapter covers the CGI concepts and functions, while the fourth chapter deals with the concept of graphic obje

  12. Inter- and intra-specific diurnal habitat selection of zooplankton during the spring bloom observed by Video Plankton Recorder

    DEFF Research Database (Denmark)

    Sainmont, Julie; Gislason, Astthor; Heuschele, Jan

    2014-01-01

    Recorder (VPR), a tool that allows mapping of vertical zooplankton distributions with a far greater spatial resolution than conventional zooplankton nets. The study took place over a full day–night cycle in Disko Bay, Greenland, during the peak of the phytoplankton spring bloom. The sampling revealed...... exposure) and thereby is likely to influence both state (hunger, weight and stage) and survival. The results suggest that the copepods select day and night time habitats with similar light levels (~10−9 μmol photon s−1 m−2). Furthermore, Calanus spp. displayed state-dependent behavior, with DVM most...

  13. Multi-hypothesis tracking of the tongue surface in ultrasound video recordings of normal and impaired speech.

    Science.gov (United States)

    Laporte, Catherine; Ménard, Lucie

    2018-02-01

    Characterizing tongue shape and motion, as they appear in real-time ultrasound (US) images, is of interest to the study of healthy and impaired speech production. Quantitative anlaysis of tongue shape and motion requires that the tongue surface be extracted in each frame of US speech recordings. While the literature proposes several automated methods for this purpose, these either require large or very well matched training sets, or lack robustness in the presence of rapid tongue motion. This paper presents a new robust method for tongue tracking in US images that combines simple tongue shape and motion models derived from a small training data set with a highly flexible active contour (snake) representation and maintains multiple possible hypotheses as to the correct tongue contour via a particle filtering algorithm. The method was tested on a database of large free speech recordings from healthy and impaired speakers and its accuracy was measured against the manual segmentations obtained for every image in the database. The proposed method achieved mean sum of distances errors of 1.69 ± 1.10 mm, and its accuracy was not highly sensitive to training set composition. Furthermore, the proposed method showed improved accuracy, both in terms of mean sum of distances error and in terms of linguistically meaningful shape indices, compared to the three publicly available tongue tracking software packages Edgetrak, TongueTrack and Autotrace. Copyright © 2017 Elsevier B.V. All rights reserved.

  14. Mathematics for computer graphics

    CERN Document Server

    Vince, John

    2006-01-01

    Helps you understand the mathematical ideas used in computer animation, virtual reality, CAD, and other areas of computer graphics. This work also helps you to rediscover the mathematical techniques required to solve problems and design computer programs for computer graphic applications

  15. Interactive Graphic Journalism

    NARCIS (Netherlands)

    Schlichting, Laura

    2016-01-01

    textabstractThis paper examines graphic journalism (GJ) in a transmedial context, and argues that transmedial graphic journalism (TMGJ) is an important and fruitful new form of visual storytelling, that will re-invigorate the field of journalism, as it steadily tests out and plays with new media,

  16. Sound for digital video

    CERN Document Server

    Holman, Tomlinson

    2013-01-01

    Achieve professional quality sound on a limited budget! Harness all new, Hollywood style audio techniques to bring your independent film and video productions to the next level.In Sound for Digital Video, Second Edition industry experts Tomlinson Holman and Arthur Baum give you the tools and knowledge to apply recent advances in audio capture, video recording, editing workflow, and mixing to your own film or video with stunning results. This fresh edition is chockfull of techniques, tricks, and workflow secrets that you can apply to your own projects from preproduction

  17. Annual National Vocational-Technical Teacher Education Seminar Proceedings: Micro-Teaching and Video Recording (3rd, Miami Beach, Fla., Oct. 20-23, 1969. Final Report. Leadership Series No. 25.

    Science.gov (United States)

    Cotrell, Calvin J., Ed.; Bice, Gary R., Ed.

    This second of two volumes resulting from a seminar attended by 232 vocational-technical leaders from 34 states and the District of Columbia, covers the general sessions and the sub-seminar on micro-teaching and video recording. General session presentations on teacher education by Martin W. Essex, Virgil S. Lagomarceno, and William G. Loomis are…

  18. Video Editing System

    Science.gov (United States)

    Schlecht, Leslie E.; Kutler, Paul (Technical Monitor)

    1998-01-01

    This is a proposal for a general use system based, on the SGI IRIS workstation platform, for recording computer animation to videotape. In addition, this system would provide features for simple editing and enhancement. Described here are a list of requirements for the system, and a proposed configuration including the SGI VideoLab Integrator, VideoMedia VLAN animation controller and the Pioneer rewritable laserdisc recorder.

  19. Hyperspectral processing in graphical processing units

    Science.gov (United States)

    Winter, Michael E.; Winter, Edwin M.

    2011-06-01

    With the advent of the commercial 3D video card in the mid 1990s, we have seen an order of magnitude performance increase with each generation of new video cards. While these cards were designed primarily for visualization and video games, it became apparent after a short while that they could be used for scientific purposes. These Graphical Processing Units (GPUs) are rapidly being incorporated into data processing tasks usually reserved for general purpose computers. It has been found that many image processing problems scale well to modern GPU systems. We have implemented four popular hyperspectral processing algorithms (N-FINDR, linear unmixing, Principal Components, and the RX anomaly detection algorithm). These algorithms show an across the board speedup of at least a factor of 10, with some special cases showing extreme speedups of a hundred times or more.

  20. Regular Matroids with Graphic Cocircuits

    OpenAIRE

    Papalamprou, Konstantinos; Pitsoulis, Leonidas

    2009-01-01

    We introduce the notion of graphic cocircuits and show that a large class of regular matroids with graphic cocircuits belongs to the class of signed-graphic matroids. Moreover, we provide an algorithm which determines whether a cographic matroid with graphic cocircuits is signed-graphic or not.

  1. Can CCTV identify people in public transit stations who are at risk of attempting suicide? An analysis of CCTV video recordings of attempters and a comparative investigation

    Directory of Open Access Journals (Sweden)

    Brian L. Mishara

    2016-12-01

    Full Text Available Abstract Background Suicides incur in all public transit systems which do not completely impede access to tracks. We conducted two studies to determine if we can reliably identify in stations people at risk of suicide in order to intervene in a timely manner. The first study analysed all CCTV recordings of suicide attempters in Montreal underground stations over 2 years to identify behaviours indicating suicide risk. The second study verified the potential of using those behaviours to discriminate attempters from other passengers in real time. Methods First study: Trained observers watched CCTV video recordings of 60 attempters, with 2–3 independent observers coding seven easily observable behaviours and five behaviours requiring interpretation (e.g. “strange behaviours,” “anxious behaviour”. Second study: We randomly mixed 63 five-minute CCTV recordings before an attempt with 56 recordings from the same cameras at the same time of day, and day of week, but when no suicide attempt was to occur. Thirty-three undergraduate students after only 10 min of instructions watched the recordings and indicated if they observed each of 13 behaviours identified in the First Study. Results First study: Fifty (83% of attempters had easily observable behaviours potentially indicative of an impending attempt, and 37 (61% had two or more of these behaviours. Forty-five (75% had at least one behaviours requiring interpretation. Twenty-two witnesses attempted to intervene to stop the attempt, and 75% of attempters had behaviours indicating possible ambivalence (e.g. waiting for several trains to pass; trying to get out of the path of the train. Second study: Two behaviours, leaving an object on the platform and pacing back and forth from the yellow line (just before the edge of the platform, could identify 24% of attempters with no false positives. The other target behaviours were also present in non-attempters. However, having two or more of these

  2. Can CCTV identify people in public transit stations who are at risk of attempting suicide? An analysis of CCTV video recordings of attempters and a comparative investigation.

    Science.gov (United States)

    Mishara, Brian L; Bardon, Cécile; Dupont, Serge

    2016-12-15

    Suicides incur in all public transit systems which do not completely impede access to tracks. We conducted two studies to determine if we can reliably identify in stations people at risk of suicide in order to intervene in a timely manner. The first study analysed all CCTV recordings of suicide attempters in Montreal underground stations over 2 years to identify behaviours indicating suicide risk. The second study verified the potential of using those behaviours to discriminate attempters from other passengers in real time. First study: Trained observers watched CCTV video recordings of 60 attempters, with 2-3 independent observers coding seven easily observable behaviours and five behaviours requiring interpretation (e.g. "strange behaviours," "anxious behaviour"). Second study: We randomly mixed 63 five-minute CCTV recordings before an attempt with 56 recordings from the same cameras at the same time of day, and day of week, but when no suicide attempt was to occur. Thirty-three undergraduate students after only 10 min of instructions watched the recordings and indicated if they observed each of 13 behaviours identified in the First Study. First study: Fifty (83%) of attempters had easily observable behaviours potentially indicative of an impending attempt, and 37 (61%) had two or more of these behaviours. Forty-five (75%) had at least one behaviours requiring interpretation. Twenty-two witnesses attempted to intervene to stop the attempt, and 75% of attempters had behaviours indicating possible ambivalence (e.g. waiting for several trains to pass; trying to get out of the path of the train). Second study: Two behaviours, leaving an object on the platform and pacing back and forth from the yellow line (just before the edge of the platform), could identify 24% of attempters with no false positives. The other target behaviours were also present in non-attempters. However, having two or more of these behaviours indicated a likelihood of being at risk of attempting

  3. Perception in statistical graphics

    Science.gov (United States)

    VanderPlas, Susan Ruth

    There has been quite a bit of research on statistical graphics and visualization, generally focused on new types of graphics, new software to create graphics, interactivity, and usability studies. Our ability to interpret and use statistical graphics hinges on the interface between the graph itself and the brain that perceives and interprets it, and there is substantially less research on the interplay between graph, eye, brain, and mind than is sufficient to understand the nature of these relationships. The goal of the work presented here is to further explore the interplay between a static graph, the translation of that graph from paper to mental representation (the journey from eye to brain), and the mental processes that operate on that graph once it is transferred into memory (mind). Understanding the perception of statistical graphics should allow researchers to create more effective graphs which produce fewer distortions and viewer errors while reducing the cognitive load necessary to understand the information presented in the graph. Taken together, these experiments should lay a foundation for exploring the perception of statistical graphics. There has been considerable research into the accuracy of numerical judgments viewers make from graphs, and these studies are useful, but it is more effective to understand how errors in these judgments occur so that the root cause of the error can be addressed directly. Understanding how visual reasoning relates to the ability to make judgments from graphs allows us to tailor graphics to particular target audiences. In addition, understanding the hierarchy of salient features in statistical graphics allows us to clearly communicate the important message from data or statistical models by constructing graphics which are designed specifically for the perceptual system.

  4. Meeting the graphical needs of the electronic battlefield

    Science.gov (United States)

    Hancock, William R.; Johnson, Michael J.; Rogers, Joel Clark W.; Ghrayeb, Joseph

    1994-06-01

    This paper describes the top level architecture and requirements of the resulting Cockpit Display Generator (CDG). The architecture provides the graphical and video processing power needed to drive future high resolution display devices and generate more natural panoramic 3D formats. The CDG will provide multichannel, high performance 2D and 3D graphics, and real-time video manipulation. The architecture is designed for a compact implementation in the PAVE PILLAR environment using high-speed fiber optic networks. The CDG sustains the needs of the Panoramic Cockpit Control and Display System 2000 cockpit; it can be extensible to higher performance levels in PAVE PACE architectures.

  5. Exploring the clinical decision-making used by experienced cardiorespiratory physiotherapists: A mixed method qualitative design of simulation, video recording and think aloud techniques.

    Science.gov (United States)

    Thackray, Debbie; Roberts, Lisa

    2017-02-01

    The ability of physiotherapists to make clinical decisions is a vital component of being an autonomous practitioner, yet this complex phenomenon has been under-researched in cardiorespiratory physiotherapy. The purpose of this study was to explore clinical decision-making (CDM) by experienced physiotherapists in a scenario of a simulated patient experiencing acute deterioration of their respiratory function. The main objective of this observational study was to identify the actions, thoughts, and behaviours used by experienced cardiorespiratory physiotherapists in their clinical decision-making processes. A mixed-methods (qualitative) design employing observation and think-aloud, was adopted using a computerised manikin in a simulated environment. The participants clinically assessed the manikin programmed with the same clinical signs, under standardised conditions in the clinical skills practice suite, which was set up as a ward environment. Experienced cardiorespiratory physiotherapists, recruited from clinical practice within a 50-mile radius of the University(*). Participants were video-recorded throughout the assessment and treatment and asked to verbalise their thought processes using the 'think-aloud' method. The recordings were transcribed verbatim and managed using a Framework approach. Eight cardiorespiratory physiotherapists participated (mean 7years clinical experience, range 3.5-16years. CDM was similar to the collaborative hypothetico-deductive model, five-rights nursing model, reasoning strategies, inductive reasoning and pattern recognition. However, the CDM demonstrated by the physiotherapists was complex, interactive and iterative. Information processing occurred continuously throughout the whole interaction with the patient, and the specific cognitive skills of recognition, matching, discriminating, relating, inferring, synthesising and prediction were identified as being used sequentially. The findings from this study were used to develop a new

  6. Digital Raster Graphics

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — A digital raster graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) topographic map. The scanned image includes all map collar information. The...

  7. Graphics Processor Units (GPUs)

    Science.gov (United States)

    Wyrwas, Edward J.

    2017-01-01

    This presentation will include information about Graphics Processor Units (GPUs) technology, NASA Electronic Parts and Packaging (NEPP) tasks, The test setup, test parameter considerations, lessons learned, collaborations, a roadmap, NEPP partners, results to date, and future plans.

  8. Flowfield computer graphics

    Science.gov (United States)

    Desautel, Richard

    1993-01-01

    The objectives of this research include supporting the Aerothermodynamics Branch's research by developing graphical visualization tools for both the branch's adaptive grid code and flow field ray tracing code. The completed research for the reporting period includes development of a graphical user interface (GUI) and its implementation into the NAS Flowfield Analysis Software Tool kit (FAST), for both the adaptive grid code (SAGE) and the flow field ray tracing code (CISS).

  9. Canvas Pocket Reference Scripted Graphics for HTML5

    CERN Document Server

    Flanagan, David

    2010-01-01

    The Canvas element is a revolutionary feature of HTML5 that enables powerful graphics for rich Internet applications, and this pocket reference provides the essentials you need to put this element to work. If you have working knowledge of JavaScript, this book will help you create detailed, interactive, and animated graphics -- from charts to animations to video games -- whether you're a web designer or a programmer interested in graphics. Canvas Pocket Reference provides both a tutorial that covers all of the element's features with plenty of examples and a definitive reference to each of t

  10. The complete guide to blender graphics computer modeling and animation

    CERN Document Server

    Blain, John M

    2014-01-01

    Smoothly Leads Users into the Subject of Computer Graphics through the Blender GUIBlender, the free and open source 3D computer modeling and animation program, allows users to create and animate models and figures in scenes, compile feature movies, and interact with the models and create video games. Reflecting the latest version of Blender, The Complete Guide to Blender Graphics: Computer Modeling & Animation, 2nd Edition helps beginners learn the basics of computer animation using this versatile graphics program. This edition incorporates many new features of Blender, including developments

  11. Graphic Conversation #1, #2, #3

    OpenAIRE

    Harkins, Mike

    2008-01-01

    Exhibited at New Views 2: conversations and dialogues in graphic design: an international symposium defining graphic design for the future. London: College of Communication / Melbourne, Australia: Melbourne Museum

  12. HEP graphics and visualization

    CERN Document Server

    AUTHOR|(CDS)2067145; CERN. Geneva

    1992-03-24

    The lectures will give an overview of the use of graphics in high-energy physics, i.e. for detector design, event representation and interactive analysis in 2D and 3D. An introduction to graphics packages (GKS, PHIGS, etc.) will be given, including discussion of the basic concepts of graphics programming. Emphasis is put on new ideas about graphical representation of events. Non-linear visualisation techniques, to improve the ease of understanding, will be described in detail. Physiological aspects, which play a role when using colours and when drawing mathematical objects like points and lines, are discussed. An analysis will be made of the power of graphics to represent very complex data in 2 and 3 dimensions, and the advantages of different representations will be compared.New techniques based on graphics are emerging today, such as multimedia or real-life pictures. Some are used in other domains of scientific research, as will be described and an overview of possible applications in our field will be give...

  13. Graphics for relatedness research.

    Science.gov (United States)

    Galván-Femenía, Iván; Graffelman, Jan; Barceló-I-Vidal, Carles

    2017-11-01

    Studies of relatedness have been crucial in molecular ecology over the last decades. Good evidence of this is the fact that studies of population structure, evolution of social behaviours, genetic diversity and quantitative genetics all involve relatedness research. The main aim of this article was to review the most common graphical methods used in allele sharing studies for detecting and identifying family relationships. Both IBS- and IBD-based allele sharing studies are considered. Furthermore, we propose two additional graphical methods from the field of compositional data analysis: the ternary diagram and scatterplots of isometric log-ratios of IBS and IBD probabilities. We illustrate all graphical tools with genetic data from the HGDP-CEPH diversity panel, using mainly 377 microsatellites genotyped for 25 individuals from the Maya population of this panel. We enhance all graphics with convex hulls obtained by simulation and use these to confirm the documented relationships. The proposed compositional graphics are shown to be useful in relatedness research, as they also single out the most prominent related pairs. The ternary diagram is advocated for its ability to display all three allele sharing probabilities simultaneously. The log-ratio plots are advocated as an attempt to overcome the problems with the Euclidean distance interpretation in the classical graphics. © 2017 The Authors. Molecular Ecology Resources Published by John Wiley & Sons Ltd.

  14. Using Video Monitors for Teaching Color Science.

    Science.gov (United States)

    Chermak, Vincent

    1997-10-01

    The emission spectra of phosphors from video monitors can be used as primary color standards since the color emissions do not vary among manufacturers. As a result, video monitors provide an ideal medium for studying additive and subtractive color mixing. A color monitor, a video graphics program, and a monochromator can be used to obtain both the transmission and absorption spectra of transparent colored films. The graphics program provides the tristimulus values from which the chromaticity coordinates of the films can be obtained. The schema defining these coordinates and how they are used will be described.

  15. Interactive graphical model building using telepresence and virtual reality

    Energy Technology Data Exchange (ETDEWEB)

    Cooke, C. [Massachusetts Inst. of Tech., Cambridge, MA (United States); Stansfield, S. [Sandia National Labs., Albuquerque, NM (United States)

    1993-10-01

    This paper presents a prototype system developed at Sandia National Laboratories to create and verify computer-generated graphical models of remote physical environments. The goal of the system is to create an interface between an operator and a computer vision system so that graphical models can be created interactively. Virtual reality and telepresence are used to allow interaction between the operator, computer, and remote environment. A stereo view of the remote environment is produced by two CCD cameras. The cameras are mounted on a three degree-of-freedom platform which is slaved to a mechanically-tracked, stereoscopic viewing device. This gives the operator a sense of immersion in the physical environment. The stereo video is enhanced by overlaying the graphical model onto it. Overlay of the graphical model onto the stereo video allows visual verification of graphical models. Creation of a graphical model is accomplished by allowing the operator to assist the computer in modeling. The operator controls a 3-D cursor to mark objects to be modeled. The computer then automatically extracts positional and geometric information about the object and creates the graphical model.

  16. Video microblogging

    DEFF Research Database (Denmark)

    Bornoe, Nis; Barkhuus, Louise

    2010-01-01

    Microblogging is a recently popular phenomenon and with the increasing trend for video cameras to be built into mobile phones, a new type of microblogging has entered the arena of electronic communication: video microblogging. In this study we examine video microblogging, which is the broadcasting...... of short videos. A series of semi-structured interviews offers an understanding of why and how video microblogging is used and what the users post and broadcast....

  17. Quasi-Graphic Matroids (retracted)

    NARCIS (Netherlands)

    J. Geelen (Jim); A.M.H. Gerards (Bert); G. Whittle (Geoff)

    2018-01-01

    textabstractFrame matroids and lifted-graphic matroids are two interesting generalizations of graphic matroids. Here, we introduce a new generalization, quasi-graphic matroids, that unifies these two existing classes. Unlike frame matroids and lifted-graphic matroids, it is easy to certify that a

  18. Video demystified

    CERN Document Server

    Jack, Keith

    2004-01-01

    This international bestseller and essential reference is the "bible" for digital video engineers and programmers worldwide. This is by far the most informative analog and digital video reference available, includes the hottest new trends and cutting-edge developments in the field. Video Demystified, Fourth Edition is a "one stop" reference guide for the various digital video technologies. The fourth edition is completely updated with all new chapters on MPEG-4, H.264, SDTV/HDTV, ATSC/DVB, and Streaming Video (Video over DSL, Ethernet, etc.), as well as discussions of the latest standards throughout. The accompanying CD-ROM is updated to include a unique set of video test files in the newest formats. *This essential reference is the "bible" for digital video engineers and programmers worldwide *Contains all new chapters on MPEG-4, H.264, SDTV/HDTV, ATSC/DVB, and Streaming Video *Completely revised with all the latest and most up-to-date industry standards.

  19. Publication-quality computer graphics

    Energy Technology Data Exchange (ETDEWEB)

    Slabbekorn, M.H.; Johnston, R.B. Jr.

    1981-01-01

    A user-friendly graphic software package is being used at Oak Ridge National Laboratory to produce publication-quality computer graphics. Close interaction between the graphic designer and computer programmer have helped to create a highly flexible computer graphics system. The programmer-oriented environment of computer graphics has been modified to allow the graphic designer freedom to exercise his expertise with lines, form, typography, and color. The resultant product rivals or surpasses that work previously done by hand. This presentation of computer-generated graphs, charts, diagrams, and line drawings clearly demonstrates the latitude and versatility of the software when directed by a graphic designer.

  20. Graphics performance in rich Internet applications.

    Science.gov (United States)

    Hoetzlein, Rama C

    2012-01-01

    Rendering performance for rich Internet applications (RIAs) has recently focused on the debate between using Flash and HTML5 for streaming video and gaming on mobile devices. A key area not widely explored, however, is the scalability of raw bitmap graphics performance for RIAs. Does Flash render animated sprites faster than HTML5? How much faster is WebGL than Flash? Answers to these questions are essential for developing large-scale data visualizations, online games, and truly dynamic websites. A new test methodology analyzes graphics performance across RIA frameworks and browsers, revealing specific performance outliers in existing frameworks. The results point toward a future in which all online experiences might be GPU accelerated.

  1. Computer Communications And Graphics For Clinical Radiology

    Science.gov (United States)

    Rhodes, Michael L.; Azzawi, Yu-Ming; Tivattanasuk, Eva S.; Pang, Alex T.; Ly, Karen; Panicker, Hema

    1986-05-01

    Computer graphics has many forms. When applied in medicine, it can range from simple two dimensional charts and graphs to rendering of three-dimensional scenes. Computer graphic displays of molecular or large anatomic structures have been used to great advantage by numerous medical researchers. In addition, graphic presentations can be dynamic where displays are controlled by physician-user commands, or the presentations can be static, where views are recorded in discrete frames for later distribution or permanent archival. In medicine both interactive and static forms of computer graphics have their proper place in the effective delivery of health care. Computer graphics, however, changes constantly in the area of software techniques, hardware improvements and its clinical application. What may be medically appropriate today in the use of computer graphics can soon become inadequate and well behind the new advances that so quickly follow. In this paper the key feature of computer communication is discussed that aids in the clinical utility of computer graphics in medicine. It is distribution. Distribution in terms of instantaneous computer graphic software updates and more importantly, distribution of meaningful three-dimensional presentations to referring physicians. Physicians who, working in their private offices, have no routine access to medical work stations. In this environment three dimensional presentations of anatomy are static in nature, but must deliver realistic views of critical structures. This paper outlines how computer communication provides the essential ingredient to the provision of this service. As an illustration, the electronic distribution of software to generate three dimensional views of complex anatomoic structures is discussed. Sample views are included.

  2. E-LEARNING METHOD APPLIED TO TECHNICAL GRAPHICS SUBJECTS

    Directory of Open Access Journals (Sweden)

    GOANTA Adrian Mihai

    2011-11-01

    Full Text Available The paper presents some of the author’s endeavors in creating video courses for the students from the Faculty of Engineering in Braila related to subjects involving technical graphics . There are also mentioned the steps taken in completing the method and how to achieve a feedback on the rate of access to these types of courses by the students.

  3. Mathematical structures for computer graphics

    CERN Document Server

    Janke, Steven J

    2014-01-01

    A comprehensive exploration of the mathematics behind the modeling and rendering of computer graphics scenes Mathematical Structures for Computer Graphics presents an accessible and intuitive approach to the mathematical ideas and techniques necessary for two- and three-dimensional computer graphics. Focusing on the significant mathematical results, the book establishes key algorithms used to build complex graphics scenes. Written for readers with various levels of mathematical background, the book develops a solid foundation for graphics techniques and fills in relevant grap

  4. Introduction to regression graphics

    CERN Document Server

    Cook, R Dennis

    2009-01-01

    Covers the use of dynamic and interactive computer graphics in linear regression analysis, focusing on analytical graphics. Features new techniques like plot rotation. The authors have composed their own regression code, using Xlisp-Stat language called R-code, which is a nearly complete system for linear regression analysis and can be utilized as the main computer program in a linear regression course. The accompanying disks, for both Macintosh and Windows computers, contain the R-code and Xlisp-Stat. An Instructor's Manual presenting detailed solutions to all the problems in the book is ava

  5. Mobile Video in Everyday Social Interactions

    Science.gov (United States)

    Reponen, Erika; Lehikoinen, Jaakko; Impiö, Jussi

    Video recording has become a spontaneous everyday activity for many people, thanks to the video capabilities of modern mobile phones. Internet connectivity of mobile phones enables fluent sharing of captured material even real-time, which makes video an up-and-coming everyday interaction medium. In this article we discuss the effect of the video camera in the social environment, everyday life situations, mainly based on a study where four groups of people used digital video cameras in their normal settings. We also reflect on another study of ours, relating to real-time mobile video communication and discuss future views. The aim of our research is to understand the possibilities in the domain of mobile video. Live and delayed sharing seem to have their special characteristics, live video being used as a virtual window between places whereas delayed video usage has more scope for good-quality content. While this novel way of interacting via mobile video enables new social patterns, it also raises new concerns for privacy and trust between participating persons in all roles, largely due to the widely spreading possibilities of videos. Video in a social situation affects cameramen (who record), targets (who are recorded), passers-by (who are unintentionally in the situation), and the audience (who follow the videos or recording situations) but also the other way around, the participants affect the video by their varying and evolving personal and communicational motivations for recording.

  6. A graphical user interface for infant ERP analysis.

    Science.gov (United States)

    Kaatiala, Jussi; Yrttiaho, Santeri; Forssman, Linda; Perdue, Katherine; Leppänen, Jukka

    2014-09-01

    Recording of event-related potentials (ERPs) is one of the best-suited technologies for examining brain function in human infants. Yet the existing software packages are not optimized for the unique requirements of analyzing artifact-prone ERP data from infants. We developed a new graphical user interface that enables an efficient implementation of a two-stage approach to the analysis of infant ERPs. In the first stage, video records of infant behavior are synchronized with ERPs at the level of individual trials to reject epochs with noncompliant behavior and other artifacts. In the second stage, the interface calls MATLAB and EEGLAB (Delorme & Makeig, Journal of Neuroscience Methods 134(1):9-21, 2004) functions for further preprocessing of the ERP signal itself (i.e., filtering, artifact removal, interpolation, and rereferencing). Finally, methods are included for data visualization and analysis by using bootstrapped group averages. Analyses of simulated and real EEG data demonstrated that the proposed approach can be effectively used to establish task compliance, remove various types of artifacts, and perform representative visualizations and statistical comparisons of ERPs. The interface is available for download from http://www.uta.fi/med/icl/methods/eeg.html in a format that is widely applicable to ERP studies with special populations and open for further editing by users.

  7. VIPER: a general-purpose digital image-processing system applied to video microscopy.

    Science.gov (United States)

    Brunner, M; Ittner, W

    1988-01-01

    This paper describes VIPER, the video image-processing system Erlangen. It consists of a general purpose microcomputer, commercially available image-processing hardware modules connected directly to the computer, video input/output-modules such as a TV camera, video recorders and monitors, and a software package. The modular structure and the capabilities of this system are explained. The software is user-friendly, menu-driven and performs image acquisition, transfers, greyscale processing, arithmetics, logical operations, filtering display, colour assignment, graphics, and a couple of management functions. More than 100 image-processing functions are implemented. They are available either by typing a key or by a simple call to the function-subroutine library in application programs. Examples are supplied in the area of biomedical research, e.g. in in-vivo microscopy.

  8. Graphical and Normative Analysis of Binocular Vision by Mini Computer: A Teaching Aid and Clinical Tool.

    Science.gov (United States)

    Kees, Martin; Schor, Clifton

    1981-01-01

    An inexpensive computer graphics systems (Commodore PET), used as a video aid for teaching students advanced case analysis, is described. The course provides students with the analytical tools for evaluating with graphical and statistical techniques and treating with lenses, prisms, and orthoptics various anomalies of binocular vision. (MLW)

  9. Comics & Graphic Novels

    Science.gov (United States)

    Cleaver, Samantha

    2008-01-01

    Not so many years ago, comic books in school were considered the enemy. Students caught sneaking comics between the pages of bulky--and less engaging--textbooks were likely sent to the principal. Today, however, comics, including classics such as "Superman" but also their generally more complex, nuanced cousins, graphic novels, are not only…

  10. Graphic Novels: A Roundup.

    Science.gov (United States)

    Kan, Katherine L.

    1994-01-01

    Reviews graphic novels for young adults, including five titles from "The Adventures of Tintin," a French series that often uses ethnic and racial stereotypes which reflect the time in which they were published, and "Wolverine," a Marvel comic character adventure. (Contains six references.) (LRW)

  11. Port Video and Logo

    OpenAIRE

    Whitehead, Stuart; Rush, Joshua

    2013-01-01

    Logo PDF files should be accessible by any PDF reader such as Adobe Reader. SVG files of the logo are vector graphics accessible by programs such as Inkscape or Adobe Illustrator. PNG files are image files of the logo that should be able to be opened by any operating system's default image viewer. The final report is submitted in both .doc (Microsoft Word) and .pdf formats. The video is submitted in .avi format and can be viewed with Windows Media Player or VLC. Audio .wav files are also ...

  12. Graphics gems V (Macintosh version)

    CERN Document Server

    Paeth, Alan W

    1995-01-01

    Graphics Gems V is the newest volume in The Graphics Gems Series. It is intended to provide the graphics community with a set of practical tools for implementing new ideas and techniques, and to offer working solutions to real programming problems. These tools are written by a wide variety of graphics programmers from industry, academia, and research. The books in the series have become essential, time-saving tools for many programmers.Latest collection of graphics tips in The Graphics Gems Series written by the leading programmers in the field.Contains over 50 new gems displaying some of t

  13. The definitive guide to HTML 5 video

    CERN Document Server

    Pfeiffer, Silvia

    2010-01-01

    Plugins will soon be a thing of the past. The Definitive Guide to HTML5 Video is the first authoritative book on HTML5 video, the new web standard that allows browsers to support audio and video elements natively. This makes it very easy for web developers to publish audio and video, integrating both within the general presentation of web pages. For example, media elements can be styled using CSS (style sheets), integrated into SVG (scalable vector graphics), and manipulated in a Canvas. The book offers techniques for providing accessibility to media elements, enabling consistent handling of a

  14. Topographic Digital Raster Graphics - USGS DIGITAL RASTER GRAPHICS

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — USGS Topographic Digital Raster Graphics downloaded from LABINS (http://data.labins.org/2003/MappingData/drg/drg_stpl83.cfm). A digital raster graphic (DRG) is a...

  15. enhancedGraphics: a Cytoscape app for enhanced node graphics.

    Science.gov (United States)

    Morris, John H; Kuchinsky, Allan; Ferrin, Thomas E; Pico, Alexander R

    2014-01-01

    enhancedGraphics ( http://apps.cytoscape.org/apps/enhancedGraphics) is a Cytoscape app that implements a series of enhanced charts and graphics that may be added to Cytoscape nodes. It enables users and other app developers to create pie, line, bar, and circle plots that are driven by columns in the Cytoscape Node Table. Charts are drawn using vector graphics to allow full-resolution scaling.

  16. Graphics database creation and manipulation: HyperCard Graphics Database Toolkit and Apple Graphics Source

    Science.gov (United States)

    Herman, Jeffrey; Fry, David

    1990-08-01

    Because graphic files can be stored in a number ofdifferent file formats, it has traditionally been difficult to create a graphics database from which users can open, copy, and print graphic files, where each file in the database may be in one ofseverai different formats. HyperCard Graphics Database Toolkit has been designed and written by Apple Computer to enable software developers to facilitate the creation of customized graphics databases. Using a database developed with the toolkit, users can open, copy, or print a graphic transparently, without having to know or understand the complexities of file formats. In addition, the toolkit includes a graphic user interface, graphic design, on-line help, and search algorithms that enable users to locate specific graphics quickly. Currently, the toolkit handles graphics in the formats MPNT, PICT, and EPSF, and is open to supporting other formats as well. Developers can use the toolkit to alter the code, the interface, and the graphic design in order to customize their database for the needs oftheir users. This paper discusses the structure ofthe toolkit and one implementation, Apple Graphics Source (AGS). AGS contains over 2,000 graphics used in Apple's books and manuals. AGS enables users to find existing graphics of Apple products and use them for presentations, new publications, papers, and software projects.

  17. A Live-Time Relation: Motion Graphics meets Classical Music

    DEFF Research Database (Denmark)

    Steijn, Arthur

    2014-01-01

    present segments of my work toward a working model for the process of design of visuals and motion graphics applied in spatial contexts. I show how various design elements and components: line and shape, tone and colour, time and timing, rhythm and movement interact with conceptualizations of space......, liveness and atmosphere. The design model will be a framework for both academic analytical studies as well as for designing time-based narratives and visual concepts involving motion graphics in spatial contexts. I focus on cases in which both pre-rendered, and live generated motion graphics are designed....... Of particular interest are the audio-visual parallels between motion graphics presented in the foyer, before, and the large-scale video projections, during the live concert. These parallels are studied through theory and using terminology derived from two different fields. One perspective includes ideas...

  18. Interactive Graphic Journalism

    Directory of Open Access Journals (Sweden)

    Laura Schlichting

    2016-12-01

    Full Text Available This paper examines graphic journalism (GJ in a transmedial context, and argues that transmedial graphic journalism (TMGJ is an important and fruitful new form of visual storytelling, that will re-invigorate the field of journalism, as it steadily tests out and plays with new media, ultimately leading to new challenges in both the production and reception process. With TMGJ, linear narratives may be broken up and ethical issues concerning the emotional and entertainment value are raised when it comes to ‘playing the news’. The aesthetic characteristics of TMGJ will be described and interactivity’s influence on non-fiction storytelling will be explored in an analysis of The Nisoor Square Shooting (2011 and Ferguson Firsthand (2015.

  19. Career Opportunities in Computer Graphics.

    Science.gov (United States)

    Langer, Victor

    1983-01-01

    Reviews the impact of computer graphics on industrial productivity. Details the computer graphics technician curriculum at Milwaukee Area Technical College and the cooperative efforts of business and industry to fund and equip the program. (SK)

  20. Graphic Grown Up

    Science.gov (United States)

    Kim, Ann

    2009-01-01

    It's no secret that children and YAs are clued in to graphic novels (GNs) and that comics-loving adults are positively giddy that this format is getting the recognition it deserves. Still, there is a whole swath of library card-carrying grown-up readers out there with no idea where to start. Splashy movies such as "300" and "Spider-Man" and their…

  1. Fostering Teacher Candidates' Reflective Practice through Video Editing

    Science.gov (United States)

    Trent, Margaret; Gurvitch, Rachel

    2015-01-01

    Recently, interest in using video to promote the reflective practice in preservice teacher education has increased. Video recordings of teaching incidents inspire the reflective practice in preservice teachers by allowing them to analyze instruction and view teaching in an objective light. As an extension of video recording, video editing has…

  2. Graphic engine resource management

    Science.gov (United States)

    Bautin, Mikhail; Dwarakinath, Ashok; Chiueh, Tzi-cker

    2008-01-01

    Modern consumer-grade 3D graphic cards boast a computation/memory resource that can easily rival or even exceed that of standard desktop PCs. Although these cards are mainly designed for 3D gaming applications, their enormous computational power has attracted developers to port an increasing number of scientific computation programs to these cards, including matrix computation, collision detection, cryptography, database sorting, etc. As more and more applications run on 3D graphic cards, there is a need to allocate the computation/memory resource on these cards among the sharing applications more fairly and efficiently. In this paper, we describe the design, implementation and evaluation of a Graphic Processing Unit (GPU) scheduler based on Deficit Round Robin scheduling that successfully allocates to every process an equal share of the GPU time regardless of their demand. This scheduler, called GERM, estimates the execution time of each GPU command group based on dynamically collected statistics, and controls each process's GPU command production rate through its CPU scheduling priority. Measurements on the first GERM prototype show that this approach can keep the maximal GPU time consumption difference among concurrent GPU processes consistently below 5% for a variety of application mixes.

  3. Risk Management Collaboration through Sharing Interactive Graphics

    Science.gov (United States)

    Slingsby, Aidan; Dykes, Jason; Wood, Jo; Foote, Matthew

    2010-05-01

    Risk management involves the cooperation of scientists, underwriters and actuaries all of whom analyse data to support decision-making. Results are often disseminated through static documents with graphics that convey the message the analyst wishes to communicate. Interactive graphics are increasingly popular means of communicating the results of data analyses because they enable other parties to explore and visually analyse some of the data themselves prior to and during discussion. Discussion around interactive graphics can occur synchronously in face-to-face meetings or with video-conferencing and screen sharing or they can occur asynchronously through web-sites such as ManyEyes, web-based fora, blogs, wikis and email. A limitation of approaches that do not involve screen sharing is the difficulty in sharing the results of insights from interacting with the graphic. Static images accompanied can be shared but these themselves cannot be interacted, producing a discussion bottleneck (Baker, 2008). We address this limitation by allowing the state and configuration of graphics to be shared (rather than static images) so that a user can reproduce someone else's graphic, interact with it and then share the results of this accompanied with some commentary. HiVE (Slingsby et al, 2009) is a compact and intuitive text-based language that has been designed for this purpose. We will describe the vizTweets project (a 9-month project funded by JISC) in which we are applying these principles to insurance risk management in the context of the Willis Research Network, the world's largest collaboration between the insurance industry and the academia). The project aims to extend HiVE to meet the needs of the sector, design, implement free-available web services and tools and to provide case studies. We will present a case study that demonstrate the potential of this approach for collaboration within the Willis Research Network. Baker, D. Towards Transparency in Visualisation Based

  4. Video Stabilization Using Feature Point Matching

    Science.gov (United States)

    Kulkarni, Shamsundar; Bormane, D. S.; Nalbalwar, S. L.

    2017-01-01

    Video capturing by non-professionals will lead to unanticipated effects. Such as image distortion, image blurring etc. Hence, many researchers study such drawbacks to enhance the quality of videos. In this paper an algorithm is proposed to stabilize jittery videos. A stable output video will be attained without the effect of jitter which is caused due to shaking of handheld camera during video recording. Firstly, salient points from each frame from the input video is identified and processed followed by optimizing and stabilize the video. Optimization includes the quality of the video stabilization. This method has shown good result in terms of stabilization and it discarded distortion from the output videos recorded in different circumstances.

  5. Critical frameworks for graphic design: graphic design and visual culture

    OpenAIRE

    Dauppe, Michele-Anne

    2011-01-01

    The paper considers an approach to the study of graphic design which addresses the expanding nature of graphic design in the 21st century and the purposeful application of theory to the subject of graphic design. In recent years graphic design has expanded its domain from the world of print culture (e.g. books, posters) into what is sometimes called screen culture. Everything from a mobile phone to a display in an airport lounge to the A.T.M. carries graphic design. It has become ever more ub...

  6. Graphic Novels and School Libraries

    Science.gov (United States)

    Rudiger, Hollis Margaret; Schliesman, Megan

    2007-01-01

    School libraries serving children and teenagers today should be committed to collecting graphic novels to the extent that their budgets allow. However, the term "graphic novel" is enough to make some librarians--not to mention administrators and parents--pause. Graphic novels are simply book-length comics. They can be works of fiction or…

  7. Digital video for the desktop

    CERN Document Server

    Pender, Ken

    1999-01-01

    Practical introduction to creating and editing high quality video on the desktop. Using examples from a variety of video applications, benefit from a professional's experience, step-by-step, through a series of workshops demonstrating a wide variety of techniques. These include producing short films, multimedia and internet presentations, animated graphics and special effects.The opportunities for the independent videomaker have never been greater - make sure you bring your understanding fully up to date with this invaluable guide.No prior knowledge of the technology is assumed, with explanati

  8. Feedback on video recorded consultations in medical teaching: why students loathe and love it – a focus-group based qualitative study

    Directory of Open Access Journals (Sweden)

    Baerheim Anders

    2005-07-01

    Full Text Available Abstract Background Feedback on videotaped consultations is a useful way to enhance consultation skills among medical students. The method is becoming increasingly common, but is still not widely implemented in medical education. One obstacle might be that many students seem to consider this educational approach a stressful experience and are reluctant to participate. In order to improve the process and make it more acceptable to the participants, we wanted to identify possible problems experienced by students when making and receiving feedback on their video taped consultations. Methods Nineteen of 75 students at the University of Bergen, Norway, participating in a consultation course in their final term of medical school underwent focus group interviews immediately following a video-based feedback session. The material was audio-taped, transcribed, and analysed by phenomenological qualitative analysis. Results The study uncovered that some students experienced emotional distress before the start of the course. They were apprehensive and lacking in confidence, expressing fear about exposing lack of skills and competence in front of each other. The video evaluation session and feedback process were evaluated positively however, and they found that their worries had been exaggerated. The video evaluation process also seemed to help strengthen the students' self esteem and self-confidence, and they welcomed this. Conclusion Our study provides insight regarding the vulnerability of students receiving feedback from videotaped consultations and their need for reassurance and support in the process, and demonstrates the importance of carefully considering the design and execution of such educational programs.

  9. Reliability of video-based identification of footstrike pattern and video time frame at initial contact in recreational runners

    DEFF Research Database (Denmark)

    Damsted, Camma; Larsen, L H; Nielsen, R.O.

    2015-01-01

    and video time frame at initial contact during treadmill running using two-dimensional (2D) video recordings. METHODS: Thirty-one recreational runners were recorded twice, 1 week apart, with a high-speed video camera. Two blinded raters evaluated each video twice with an interval of at least 14 days...

  10. The Case for Graphic Novels

    Directory of Open Access Journals (Sweden)

    Steven Hoover

    2012-04-01

    Full Text Available Many libraries and librarians have embraced graphic novels. A number of books, articles, and presentations have focused on the history of the medium and offered advice on building and maintaining collections, but very little attention has been given the question of how integrate graphic novels into a library’s instructional efforts. This paper will explore the characteristics of graphic novels that make them a valuable resource for librarians who focus on research and information literacy instruction, identify skills and competencies that can be taught by the study of graphic novels, and will provide specific examples of how to incorporate graphic novels into instruction.

  11. Graphics Gems III IBM version

    CERN Document Server

    Kirk, David

    1994-01-01

    This sequel to Graphics Gems (Academic Press, 1990), and Graphics Gems II (Academic Press, 1991) is a practical collection of computer graphics programming tools and techniques. Graphics Gems III contains a larger percentage of gems related to modeling and rendering, particularly lighting and shading. This new edition also covers image processing, numerical and programming techniques, modeling and transformations, 2D and 3D geometry and algorithms,ray tracing and radiosity, rendering, and more clever new tools and tricks for graphics programming. Volume III also includes a

  12. Video games

    OpenAIRE

    Kolář, Vojtěch

    2012-01-01

    This thesis is based on a detailed analysis of various topics related to the question of whether video games can be art. In the first place it analyzes the current academic discussion on this subject and confronts different opinions of both supporters and objectors of the idea, that video games can be a full-fledged art form. The second point of this paper is to analyze the properties, that are inherent to video games, in order to find the reason, why cultural elite considers video games as i...

  13. Development of a Multimedia Toolkit for Engineering Graphics Education

    Directory of Open Access Journals (Sweden)

    Moudar Zgoul

    2009-09-01

    Full Text Available This paper focuses upon the development of a multimedia toolkit to support the teaching of Engineering Graphics Course. The project used different elements for the toolkit; animations, videos and presentations which were then integrated in a dedicated internet website. The purpose of using these elements is to assist the students building and practicing the needed engineering skills at their own pace as a part of an e-Learning solution. Furthermore, this kit allows students to repeat and view the processes and techniques of graphical construction, and visualization as much as needed, allowing them to follow and practice on their own.

  14. Computer Graphics Research Laboratory

    Science.gov (United States)

    1994-01-31

    link chain (3-6 DOFs) could be done in real-time. It took, however, 48 hours on Silicon Graphics Iris Indigo workstation to generate the animation of 20...Gesture and the poetics of prose. Poetics Today, 12:375-404, 1992. [8] Justine Cassell, David McNeill, and Karl-Erik McCullough. Kids , don’t try this at...effectively on level, accumulating each intermediate image. This pro- an Iris Indigo XS 2 4 TM with 8 stencil bits and a 48 bit duces a final image with

  15. Statistical Analysis of Video Frame Size Distribution Originating from Scalable Video Codec (SVC

    Directory of Open Access Journals (Sweden)

    Sima Ahmadpour

    2017-01-01

    Full Text Available Designing an effective and high performance network requires an accurate characterization and modeling of network traffic. The modeling of video frame sizes is normally applied in simulation studies and mathematical analysis and generating streams for testing and compliance purposes. Besides, video traffic assumed as a major source of multimedia traffic in future heterogeneous network. Therefore, the statistical distribution of video data can be used as the inputs for performance modeling of networks. The finding of this paper comprises the theoretical definition of distribution which seems to be relevant to the video trace in terms of its statistical properties and finds the best distribution using both the graphical method and the hypothesis test. The data set used in this article consists of layered video traces generating from Scalable Video Codec (SVC video compression technique of three different movies.

  16. Stereoscopic video and the quest for virtual reality: an annotated bibliography of selected topics

    Science.gov (United States)

    Starks, Michael R.

    1991-08-01

    It is the aim of most work with graphics photography and video to create vivid and compelling images. Though telepresence and virtual reality are new terms there exists a vast body of research in stereoscopic vido and other fields with similar objectives. Most of this work has appeared in patent documents or obscure publications and is rarely cited. In order to stimulate research a number of areas of interest are briefly reviewed and accompanied by extensive bibliographies. These include single camera and dual camera stereoscopy cornpatible 3D recording and transmission helmet mounted displays field sequential stereo and head and eyetracking devices.

  17. Can we be more Graphic about Graphic Design?

    OpenAIRE

    Vienne, Véronique

    2012-01-01

    Can you objectify a subjective notion? This is the question graphic designers must face when they talk about their work. Even though graphic design artifacts are omnipresent in our culture, graphic design is still an exceptionally ill-defined profession. This is one of the reasons design criticism is still a rudimentary discipline. No one knows for sure what is this thing we sometimes call “graphic communication” for lack of a better word–a technique my Webster’s dictionary describes as “the ...

  18. Digital video technology - today and tomorrow: 11th office information technology conference

    Energy Technology Data Exchange (ETDEWEB)

    Liberman, J.

    1994-10-01

    Digital video is probably computing`s fastest moving technology today. Just three years ago, the zenith of digital video technology on the PC was the successful marriage of digital text and graphics with analog audio and video by means of expensive analog laser disc players and video overlay boards. The state of the art involves two different approaches to fully digital video on computers: hardware-assisted and software-only solutions.

  19. Selection of keyframes for video colourization using steerable filtering

    Indian Academy of Sciences (India)

    Somdyuti Paul

    2017-09-08

    Sep 8, 2017 ... Abstract. The appropriate selection of distinctive keyframes to represent the salient contents of a video is a critical task in video ... Steerable filtering; dominant orientation; keyframe selection; adaptive thresholding. 1. Introduction ..... the XX Brazilian Symposium on Computer Graphics and. Image Processing ...

  20. Graphics and visualization principles & algorithms

    CERN Document Server

    Theoharis, T; Platis, Nikolaos; Patrikalakis, Nicholas M

    2008-01-01

    Computer and engineering collections strong in applied graphics and analysis of visual data via computer will find Graphics & Visualization: Principles and Algorithms makes an excellent classroom text as well as supplemental reading. It integrates coverage of computer graphics and other visualization topics, from shadow geneeration and particle tracing to spatial subdivision and vector data visualization, and it provides a thorough review of literature from multiple experts, making for a comprehensive review essential to any advanced computer study.-California Bookw

  1. Graphical models for genetic analyses

    DEFF Research Database (Denmark)

    Lauritzen, Steffen Lilholt; Sheehan, Nuala A.

    2003-01-01

    This paper introduces graphical models as a natural environment in which to formulate and solve problems in genetics and related areas. Particular emphasis is given to the relationships among various local computation algorithms which have been developed within the hitherto mostly separate areas...... of graphical models and genetics. The potential of graphical models is explored and illustrated through a number of example applications where the genetic element is substantial or dominating....

  2. Deterministic Graphical Games Revisited

    DEFF Research Database (Denmark)

    Andersson, Klas Olof Daniel; Hansen, Kristoffer Arnsfelt; Miltersen, Peter Bro

    2012-01-01

    Starting from Zermelo’s classical formal treatment of chess, we trace through history the analysis of two-player win/lose/draw games with perfect information and potentially infinite play. Such chess-like games have appeared in many different research communities, and methods for solving them......, such as retrograde analysis, have been rediscovered independently. We then revisit Washburn’s deterministic graphical games (DGGs), a natural generalization of chess-like games to arbitrary zero-sum payoffs. We study the complexity of solving DGGs and obtain an almost-linear time comparison-based algorithm...... for finding optimal strategies in such games. The existence of a linear time comparison-based algorithm remains an open problem....

  3. Computer graphics in engineering education

    CERN Document Server

    Rogers, David F

    2013-01-01

    Computer Graphics in Engineering Education discusses the use of Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM) as an instructional material in engineering education. Each of the nine chapters of this book covers topics and cites examples that are relevant to the relationship of CAD-CAM with engineering education. The first chapter discusses the use of computer graphics in the U.S. Naval Academy, while Chapter 2 covers key issues in instructional computer graphics. This book then discusses low-cost computer graphics in engineering education. Chapter 4 discusses the uniform b

  4. Graphics shaders theory and practice

    CERN Document Server

    Bailey, Mike

    2011-01-01

    Graphics Shaders: Theory and Practice is intended for a second course in computer graphics at the undergraduate or graduate level, introducing shader programming in general, but focusing on the GLSL shading language. While teaching how to write programmable shaders, the authors also teach and reinforce the fundamentals of computer graphics. The second edition has been updated to incorporate changes in the OpenGL API (OpenGL 4.x and GLSL 4.x0) and also has a chapter on the new tessellation shaders, including many practical examples. The book starts with a quick review of the graphics pipeline,

  5. 3D for Graphic Designers

    CERN Document Server

    Connell, Ellery

    2011-01-01

    Helping graphic designers expand their 2D skills into the 3D space The trend in graphic design is towards 3D, with the demand for motion graphics, animation, photorealism, and interactivity rapidly increasing. And with the meteoric rise of iPads, smartphones, and other interactive devices, the design landscape is changing faster than ever.2D digital artists who need a quick and efficient way to join this brave new world will want 3D for Graphic Designers. Readers get hands-on basic training in working in the 3D space, including product design, industrial design and visualization, modeling, ani

  6. 4K Video-Laryngoscopy and Video-Stroboscopy: Preliminary Findings.

    Science.gov (United States)

    Woo, Peak

    2016-01-01

    4K video is a new format. At 3840 × 2160 resolution, it has 4 times the resolution of standard 1080 high definition (HD) video. Magnification can be done without loss of resolution. This study uses 4K video for video-stroboscopy. Forty-six patients were examined by conventional video-stroboscopy (digital 3 chip CCD) and compared with 4K video-stroboscopy. The video was recorded on a Blackmagic 4K cinema production camera in CinemaDNG RAW format. The video was played back on a 4K monitor and compared to standard video. Pathological conditions included: polyps, scar, cysts, cancer, sulcus, and nodules. Successful 4K video recordings were achieved in all subjects using a 70° rigid endoscope. The camera system is bulky. The examination is performed similarly to standard video-stroboscopy. Playback requires a 4K monitor. As expected, the images were far clearer in detail than standard video. Stroboscopy video using the 4K camera was consistently able to show more detail. Two patients had diagnosis change after 4K viewing. 4K video is an exciting new technology that can be applied to laryngoscopy. It allows for cinematic 4K quality recordings. Both continuous and stroboscopic light can be used for visualization. Its clinical utility is feasible, but usefulness must be proven. © The Author(s) 2015.

  7. ORGANIZATION OF GRAPHIC INFORMATION FOR VIEWING THE MULTILAYER VLSI TOPOLOGY

    Directory of Open Access Journals (Sweden)

    V. I. Romanov

    2016-01-01

    Full Text Available One of the possible ways to reorganize of graphical information describing the set of topology layers of modern VLSI. The method is directed on the use in the conditions of the bounded size of video card memory. An additional effect, providing high performance of forming multi- image layout a multi-layer topology of modern VLSI, is achieved by preloading the required texture by means of auxiliary background process.

  8. 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.

  9. Video Podcasts

    DEFF Research Database (Denmark)

    Nortvig, Anne Mette; Sørensen, Birgitte Holm

    2016-01-01

    This project’s aim was to support and facilitate master’s students’ preparation and collaboration by making video podcasts of short lectures available on YouTube prior to students’ first face-to-face seminar. The empirical material stems from group interviews, from statistical data created through...... YouTube analytics and from surveys answered by students after the seminar. The project sought to explore how video podcasts support learning and reflection online and how students use and reflect on the integration of online activities in the videos. Findings showed that students engaged actively...

  10. A Survey of Graphic Novel Collection and Use in American Public Libraries

    Directory of Open Access Journals (Sweden)

    Edward Francis Schneider

    2014-09-01

    Full Text Available Objective – The objective of this study was to survey American public libraries about their collection and use of graphic novels and compare their use to similar data collected about video games. Methods – Public libraries were identified and contacted electronically for participation through an open US government database of public library systems. The libraries contacted were asked to participate voluntarily. Results – The results indicated that both graphic novels and video games have become a common part of library collections, and both media can have high levels of impact on circulation. Results indicated that while almost all libraries surveyed had some graphic novels in their collections, those serving larger populations were much more likely to use graphic novels in patron outreach. Similarly, video game collection was also more commonly found in libraries serving larger populations. Results also showed that young readers were the primary users of graphic novels. Conclusion – Responses provided a clear indicator that graphic novels are a near-ubiquitous part of public libraries today. The results on readership bolster the concept of graphic novels as a gateway to adult literacy. The results also highlight differences between larger and smaller libraries in terms of resource allocations towards new media. The patron demographics associated with comics show that library cooperation could be a potential marketing tool for comic book companies.

  11. Evaluating Texts for Graphical Literacy Instruction: The Graphic Rating Tool

    Science.gov (United States)

    Roberts, Kathryn L.; Brugar, Kristy A.; Norman, Rebecca R.

    2015-01-01

    In this article, we present the Graphical Rating Tool (GRT), which is designed to evaluate the graphical devices that are commonly found in content-area, non-fiction texts, in order to identify books that are well suited for teaching about those devices. We also present a "best of" list of science and social studies books, which includes…

  12. Transforming Graphical System Models to Graphical Attack Models

    DEFF Research Database (Denmark)

    Ivanova, Marieta Georgieva; Probst, Christian W.; Hansen, Rene Rydhof

    2016-01-01

    approach to transforming graphical system models to graphical attack models in the form of attack trees. Based on an asset in the model, our transformations result in an attack tree that represents attacks by all possible actors in the model, after which the actor in question has obtained the asset....

  13. Long-term EEG in adults: sleep-deprived EEG (SDE), ambulatory EEG (Amb-EEG) and long-term video-EEG recording (LTVER).

    Science.gov (United States)

    Michel, V; Mazzola, L; Lemesle, M; Vercueil, L

    2015-03-01

    Long-term EEG in adults includes three modalities: sleep deprived-EEG lasting 1 to 3 hours, 24 hours ambulatory-EEG and continuous prolonged video-EEG lasting from several hours to several days. The main indications of long-term EEG are: syndromic classification of epilepsy; search for interictal discharges when epilepsy is suspected or for the purpose of therapeutic evaluation; positive diagnosis of paroxysmal clinical events; and pre-surgical evaluation of drug-resistant epilepsy. Sleep deprived-EEG and ambulatory-EEG are indicated to detect interictal discharges in order to validate a syndromic classification of epilepsy when standard EEG is negative. These exams can help in evaluating treatment efficacy, especially when clinical evaluation is difficult. Long-term video EEG is indicated for drug-resistant epilepsy, to analyze electro-clinical correlations in a pre-surgical evaluation context, and to refine a positive diagnosis when paroxysmal clinical events are frequent. Copyright © 2015. Published by Elsevier SAS.

  14. Development and Assessment of a Chemistry-Based Computer Video Game as a Learning Tool

    Science.gov (United States)

    Martinez-Hernandez, Kermin Joel

    2010-01-01

    The chemistry-based computer video game is a multidisciplinary collaboration between chemistry and computer graphics and technology fields developed to explore the use of video games as a possible learning tool. This innovative approach aims to integrate elements of commercial video game and authentic chemistry context environments into a learning…

  15. Deep video deblurring

    KAUST Repository

    Su, Shuochen

    2016-11-25

    Motion blur from camera shake is a major problem in videos captured by hand-held devices. Unlike single-image deblurring, video-based approaches can take advantage of the abundant information that exists across neighboring frames. As a result the best performing methods rely on aligning nearby frames. However, aligning images is a computationally expensive and fragile procedure, and methods that aggregate information must therefore be able to identify which regions have been accurately aligned and which have not, a task which requires high level scene understanding. In this work, we introduce a deep learning solution to video deblurring, where a CNN is trained end-to-end to learn how to accumulate information across frames. To train this network, we collected a dataset of real videos recorded with a high framerate camera, which we use to generate synthetic motion blur for supervision. We show that the features learned from this dataset extend to deblurring motion blur that arises due to camera shake in a wide range of videos, and compare the quality of results to a number of other baselines.

  16. Computer Graphic Aided Music Composition.

    Science.gov (United States)

    Goldberg, Theo; Schrack, Guenther F.

    1978-01-01

    Describes a project to unite visual and audio compositions for simultaneous presentation in multi-media performances. Using a high-level graphics programing language, an applications program was written to the specifications of the composer. Description of the design system and graphics program include discussion of some of the difficulties…

  17. GRAPHICAL DETERMINATION OF DISSOCIATION CONSTANT ...

    African Journals Online (AJOL)

    DR. AMINU

    3: Plot of pH versus Log [HA]/[A-] for pKa of Valine. CONCLUSION. The acid dissociation constant of non polar amino acids determined graphically for the first time from the available literature were found to be similar with corresponding calculated values reported in the literature. Therefore the graphical approach is ...

  18. Graphic arts techniques and equipment: A compilation

    Science.gov (United States)

    1974-01-01

    Technology utilization of NASA sponsored projects involving graphic arts techniques and equipment is discussed. The subjects considered are: (1) modification to graphics tools, (1) new graphics tools, (3) visual aids for graphics, and (4) graphic arts shop hints. Photographs and diagrams are included to support the written material.

  19. Video Surveillance: Privacy Issues and Legal Compliance

    DEFF Research Database (Denmark)

    Mahmood Rajpoot, Qasim; Jensen, Christian D.

    2015-01-01

    Pervasive usage of video surveillance is rapidly increasing in developed countries. Continuous security threats to public safety demand use of such systems. Contemporary video surveillance systems offer advanced functionalities which threaten the privacy of those recorded in the video....... There is a need to balance the usage of video surveillance against its negative impact on privacy. This chapter aims to highlight the privacy issues in video surveillance and provides a model to help identify the privacy requirements in a video surveillance system. The authors make a step in the direction...... of investigating the existing legal infrastructure for ensuring privacy in video surveillance and suggest guidelines in order to help those who want to deploy video surveillance while least compromising the privacy of people and complying with legal infrastructure....

  20. SnapVideo: Personalized Video Generation for a Sightseeing Trip.

    Science.gov (United States)

    Zhang, Luming; Jing, Peiguang; Su, Yuting; Zhang, Chao; Shaoz, Ling

    2017-11-01

    Leisure tourism is an indispensable activity in urban people's life. Due to the popularity of intelligent mobile devices, a large number of photos and videos are recorded during a trip. Therefore, the ability to vividly and interestingly display these media data is a useful technique. In this paper, we propose SnapVideo, a new method that intelligently converts a personal album describing of a trip into a comprehensive, aesthetically pleasing, and coherent video clip. The proposed framework contains three main components. The scenic spot identification model first personalizes the video clips based on multiple prespecified audience classes. We then search for some auxiliary related videos from YouTube 1 according to the selected photos. To comprehensively describe a scenery, the view generation module clusters the crawled video frames into a number of views. Finally, a probabilistic model is developed to fit the frames from multiple views into an aesthetically pleasing and coherent video clip, which optimally captures the semantics of a sightseeing trip. Extensive user studies demonstrated the competitiveness of our method from an aesthetic point of view. Moreover, quantitative analysis reflects that semantically important spots are well preserved in the final video clip. 1 https://www.youtube.com/.

  1. The video lecture

    OpenAIRE

    Crook, Charles; Schofield, Louise

    2017-01-01

    Vocabulary for describing the structures, roles, and relationships characteristic of traditional, or ‘offline’, education has been seamlessly applied to the designs of ‘online’ education. One example is the lecture, delivered as a video recording. The purpose of this research is to consider the concept of ‘lecture’ as realised in both offline and online contexts. We explore how media differences entail different student experiences and how these differences relate to design decisions associat...

  2. Akademisk video

    DEFF Research Database (Denmark)

    Frølunde, Lisbeth

    2017-01-01

    Dette kapitel har fokus på metodiske problemstillinger, der opstår i forhold til at bruge (digital) video i forbindelse med forskningskommunikation, ikke mindst online. Video har længe været benyttet i forskningen til dataindsamling og forskningskommunikation. Med digitaliseringen og internettet er...... der dog opstået nye muligheder og udfordringer i forhold til at formidle og distribuere forskningsresultater til forskellige målgrupper via video. Samtidig er klassiske metodologiske problematikker som forskerens positionering i forhold til det undersøgte stadig aktuelle. Både klassiske og nye...... problemstillinger diskuteres i kapitlet, som rammesætter diskussionen ud fra forskellige positioneringsmuligheder: formidler, historiefortæller, eller dialogist. Disse positioner relaterer sig til genrer inden for ’akademisk video’. Afslutningsvis præsenteres en metodisk værktøjskasse med redskaber til planlægning...

  3. Realities of Graphic Novels: An Interview with Frederick Aldama

    Directory of Open Access Journals (Sweden)

    Ruzbeh Babaee

    2017-07-01

    Full Text Available The trend about producing and reading graphic novels has grown since the late twentieth century. These books with comic backgrounds seem to have a miraculous energy. They have been even appealing to unenthusiastic readers. They tempt people of different age groups, races and genders. They are also used for teaching ESL courses, e-learning activities, designing reality games, and teaching creative writing. If you talk to its followers, you may get the feedback that graphic novels can fulfil your demands and dreams from writing your assignments to taking you to the moon. Although many researchers have investigated the benefits of graphic novels, many faculties and librarians are still reluctant to include graphic novels in their curricula. Perhaps it is simply the attitude of many teachers and librarians that graphic novels look like a comic book, and simply are not “real” books. They have too few words, too many pictures, and lack quality to be seriously considered as literature. In the following, I, Ruzbeh Babaee, did an interview with Distinguished Professor Frederick Luis Aldama on realities of graphic novels. Aldama is a distinguished scholar and Professor of English at The Ohio State University, United States. In the departments of English and Spanish & Portuguese he is involved in teaching courses on US Latino and Latin American cultural phenomena, literature, film, music, video games, and comic books.  He has founded and directed the White House Hispanic Bright Spot awarded LASER/Latino and Latin American Space for Enrichment Research. Professor Aldama won the Ohio Education Summit Award for Founding & Directing LASER in 2016. In April 2017, Aldama was awarded OSU’s Alumni Award for Distinguished Teaching and inducted into the Academy of Teaching. He is the author, co-author, and editor of 30 books, including his first book of fiction/graphic fiction, Long Stories Cut Short: Fictions from the Borderlands.

  4. Video systems for alarm assessment

    Energy Technology Data Exchange (ETDEWEB)

    Greenwoll, D.A.; Matter, J.C. (Sandia National Labs., Albuquerque, NM (United States)); Ebel, P.E. (BE, Inc., Barnwell, SC (United States))

    1991-09-01

    The purpose of this NUREG is to present technical information that should be useful to NRC licensees in designing closed-circuit television systems for video alarm assessment. There is a section on each of the major components in a video system: camera, lens, lighting, transmission, synchronization, switcher, monitor, and recorder. Each section includes information on component selection, procurement, installation, test, and maintenance. Considerations for system integration of the components are contained in each section. System emphasis is focused on perimeter intrusion detection and assessment systems. A glossary of video terms is included. 13 figs., 9 tabs.

  5. Video Analytics

    DEFF Research Database (Denmark)

    This book collects the papers presented at two workshops during the 23rd International Conference on Pattern Recognition (ICPR): the Third Workshop on Video Analytics for Audience Measurement (VAAM) and the Second International Workshop on Face and Facial Expression Recognition (FFER) from Real...... World Videos. The workshops were run on December 4, 2016, in Cancun in Mexico. The two workshops together received 13 papers. Each paper was then reviewed by at least two expert reviewers in the field. In all, 11 papers were accepted to be presented at the workshops. The topics covered in the papers...

  6. Three-dimensional reconstruction of biological objects using a graphics engine.

    Science.gov (United States)

    Winslow, J L; Bjerknes, M; Cheng, H

    1987-12-01

    A common problem in the study of biological material is the determination of three-dimensional structure from serial sections. The large number of sections required to obtain sufficient internal detail of a structure results in enormous processing requirements. These requirements can now be satisfied by current graphics engine technology in combination with image-digitizing hardware. The previously onerous tasks of manipulating and displaying 3D objects become routine with this combination of technologies. We report a computer-assisted reconstruction system on a graphics engine-based workstation. The system accepts images from any video source and includes a utility for aligning adjacent video images. Also available is an editor for geometric object entry and editing. More novel in our approach is the use of video interiors in 3D displays in addition to contours and tiled surfaces. Video interiors is a form of display in which digitized pixels interior to objects are revealed by cutaway blocks.

  7. Super Wall Graphics for Learning.

    Science.gov (United States)

    Taylor, Anne; Vlastos, George

    1985-01-01

    Steps for organizing and implementing a program that involves elementary students in beautifying their school with large-scale wall graphics are outlined. Sources of design, drawing hints, painting methods, application techniques, and follow-up activities are discussed. (RM)

  8. Digital Raster Graphics (DRG) Lambert

    Data.gov (United States)

    Kansas Data Access and Support Center — The Digital Raster Graphic-Lambert (DRG-Lam) is a raster image of a scanned USGS topographic map with the collar information clipped out, georeferenced to the...

  9. EPA Communications Stylebook: Graphics Guide

    Science.gov (United States)

    Includes standards and guidance for graphics typography, layout, composition, color scheme, appropriate use of charts and graphs, logos and related symbols, and consistency with the message of accompanied content.

  10. IAU Graphics Extension - Gnu C

    DEFF Research Database (Denmark)

    Denver, Troelz; Jørgensen, John Leif; Riis, Troels

    1999-01-01

    This document contains a description of the library GrxIau (former UtilVesa and UTILLE). The library acts as shell to the graphics commands used at the exercises at the course 50240 Image Analysis with Microcomputers.......This document contains a description of the library GrxIau (former UtilVesa and UTILLE). The library acts as shell to the graphics commands used at the exercises at the course 50240 Image Analysis with Microcomputers....

  11. The Graphical Benchmark Information Service

    Directory of Open Access Journals (Sweden)

    Mark Papiani

    1995-01-01

    Full Text Available Unlike single-processor benchmarks, multiprocessor benchmarks can yield tens of numbers for each benchmark on each computer, as factors such as the number of processors and problem size are varied. A graphical display of performance surfaces therefore provides a satisfactory way of comparing results. The University of Southampton has developed the Graphical Benchmark Information Service (GBIS on the World Wide Web (WWW to display interactively graphs of user-selected benchmark results from the GENESIS and PARKBENCH benchmark suites.

  12. Graphic design of pinhole cameras

    Science.gov (United States)

    Edwards, H. B.; Chu, W. P.

    1979-01-01

    The paper describes a graphic technique for the analysis and optimization of pinhole size and focal length. The technique is based on the use of the transfer function of optical elements described by Scott (1959) to construct the transfer function of a circular pinhole camera. This transfer function is the response of a component or system to a pattern of lines having a sinusoidally varying radiance at varying spatial frequencies. Some specific examples of graphic design are presented.

  13. Storyboard dalam Pembuatan Motion Graphic

    OpenAIRE

    Satrya Mahardhika; Ahmad Faisal Choiril Anam Fathoni

    2013-01-01

    Motion graphics is one category in the animation that makes animation with lots of design elements in each component. Motion graphics needs long process including preproduction, production, and postproduction. Preproduction has an important role so that the next stage may provide guidance or instructions for the production process or the animation process. Preproduction includes research, making the story, script, screenplay, character, environment design and storyboards. The storyboard will ...

  14. Randomness in Contemporary Graphic Art

    OpenAIRE

    Zavřelová, Veronika

    2016-01-01

    Veronika Zavřelová Bachelor thesis Charles University in Prague, Faculty of Education, Department of Art Education Randomness in contemporary graphic art imaginative picture card game ANNOTATION This (bachelor) thesis concerns itself with a connection between verbal and visual character system within the topic of Randomness in contemporary graphic art - imaginative picture card game. The thesis is mainly based on the practical part - exclusively created card game Piktim. The card game uses as...

  15. Video Analytics

    DEFF Research Database (Denmark)

    This book collects the papers presented at two workshops during the 23rd International Conference on Pattern Recognition (ICPR): the Third Workshop on Video Analytics for Audience Measurement (VAAM) and the Second International Workshop on Face and Facial Expression Recognition (FFER) from Real W...

  16. Video summarisation: A conceptual framework and survey of the state of the art

    OpenAIRE

    Money, AG; Agius, H.

    2008-01-01

    This is the post-print (final draft post-refereeing) version of the article. Copyright @ 2007 Elsevier Inc. Video summaries provide condensed and succinct representations of the content of a video stream through a combination of still images, video segments, graphical representations and textual descriptors. This paper presents a conceptual framework for video summarisation derived from the research literature and used as a means for surveying the research literature. The framework distin...

  17. Wheezes, crackles and rhonchi: simplifying description of lung sounds increases the agreement on their classification: a study of 12 physicians' classification of lung sounds from video recordings

    Science.gov (United States)

    Melbye, Hasse; Garcia-Marcos, Luis; Brand, Paul; Everard, Mark; Priftis, Kostas; Pasterkamp, Hans

    2016-01-01

    Background The European Respiratory Society (ERS) lung sounds repository contains 20 audiovisual recordings of children and adults. The present study aimed at determining the interobserver variation in the classification of sounds into detailed and broader categories of crackles and wheezes. Methods Recordings from 10 children and 10 adults were classified into 10 predefined sounds by 12 observers, 6 paediatricians and 6 doctors for adult patients. Multirater kappa (Fleiss' κ) was calculated for each of the 10 adventitious sounds and for combined categories of sounds. Results The majority of observers agreed on the presence of at least one adventitious sound in 17 cases. Poor to fair agreement (κ<0.40) was usually found for the detailed descriptions of the adventitious sounds, whereas moderate to good agreement was reached for the combined categories of crackles (κ=0.62) and wheezes (κ=0.59). The paediatricians did not reach better agreement on the child cases than the family physicians and specialists in adult medicine. Conclusions Descriptions of auscultation findings in broader terms were more reliably shared between observers compared to more detailed descriptions. PMID:27158515

  18. Take-home video for adult literacy

    Science.gov (United States)

    Yule, Valerie

    1996-01-01

    In the past, it has not been possible to "teach oneself to read" at home, because learners could not read the books to teach them. Videos and interactive compact discs have changed that situation and challenge current assumptions of the pedagogy of literacy. This article describes an experimental adult literacy project using video technology. The language used is English, but the basic concepts apply to any alphabetic or syllabic writing system. A half-hour cartoon video can help adults and adolescents with learning difficulties. Computer-animated cartoon graphics are attractive to look at, and simplify complex material in a clear, lively way. This video technique is also proving useful for distance learners, children, and learners of English as a second language. Methods and principles are to be extended using interactive compact discs.

  19. THE EDUCATIONAL POTENTIAL OF VIDEO GAMES

    Directory of Open Access Journals (Sweden)

    Ruxandra Claudia CHIRCA (NEACȘU

    2015-11-01

    Full Text Available In nowadays' world, technological assistance is no longer confined to its primary purpose of communication or informational support and the boundaries between real and virtual world are becoming increasingly harder to be defined. This is the world of digital natives, today's children, who grow up in a technology-brimming environment and who spend most of their time playing video games. Are these video games constructive in any way? Scientific studies state they are. Video games help children in setting their goals, provide constant feedback and offer immediate rewards, along with the opportunity to collaborate with other players. Furthermore, video games can generate strong emotional reactions, such as joy or fear, and they have a captivating story line, which reveals itself within a realm of elaborate graphics.

  20. Video Analytics

    DEFF Research Database (Denmark)

    This book collects the papers presented at two workshops during the 23rd International Conference on Pattern Recognition (ICPR): the Third Workshop on Video Analytics for Audience Measurement (VAAM) and the Second International Workshop on Face and Facial Expression Recognition (FFER) from Real...... include: re-identification, consumer behavior analysis, utilizing pupillary response for task difficulty measurement, logo detection, saliency prediction, classification of facial expressions, face recognition, face verification, age estimation, super-resolution, pose estimation, and pain recognition...

  1. Video Analytics

    DEFF Research Database (Denmark)

    include: re-identification, consumer behavior analysis, utilizing pupillary response for task difficulty measurement, logo detection, saliency prediction, classification of facial expressions, face recognition, face verification, age estimation, super-resolution, pose estimation, and pain recognition......This book collects the papers presented at two workshops during the 23rd International Conference on Pattern Recognition (ICPR): the Third Workshop on Video Analytics for Audience Measurement (VAAM) and the Second International Workshop on Face and Facial Expression Recognition (FFER) from Real...

  2. Antinomies of Semiotics in Graphic Design

    Science.gov (United States)

    Storkerson, Peter

    2010-01-01

    The following paper assesses the roles played by semiotics in graphic design and in graphic design education, which both reflects and shapes practice. It identifies a series of factors; graphic design education methods and culture; semiotic theories themselves and their application to graphic design; the two wings of Peircian semiotics and…

  3. Graphic Design Career Guide 2. Revised Edition.

    Science.gov (United States)

    Craig, James

    The graphic design field is diverse and includes many areas of specialization. This guide introduces students to career opportunities in graphic design. The guide is organized in four parts. "Part One: Careers in Graphic Design" identifies and discusses the various segments of the graphic design industry, including: Advertising, Audio-Visual, Book…

  4. Comprehending, Composing, and Celebrating Graphic Poetry

    Science.gov (United States)

    Calo, Kristine M.

    2011-01-01

    The use of graphic poetry in classrooms is encouraged as a way to engage students and motivate them to read and write poetry. This article discusses how graphic poetry can help students with their comprehension of poetry while tapping into popular culture. It is organized around three main sections--reading graphic poetry, writing graphic poetry,…

  5. Cartooning History: Canada's Stories in Graphic Novels

    Science.gov (United States)

    King, Alyson E.

    2012-01-01

    In recent years, historical events, issues, and characters have been portrayed in an increasing number of non-fiction graphic texts. Similar to comics and graphic novels, graphic texts are defined as fully developed, non-fiction narratives told through panels of sequential art. Such non-fiction graphic texts are being used to teach history in…

  6. Entwicklung und Implementierung eines Algorithmus zur Detektion von Streuteilchen in PlV-Aufnahmen (Development and Implementation of an Algorithm for the Detection of Tracers in PlV Recordings)

    Science.gov (United States)

    2016-01-01

    interference. This measurement is the particle- image-velocimetry (PlY), in which scattering particles are fluid injected in a streaming and recorded by a...this algorithm is embedded i::1 a graphical user interface that contains more image-processing methods. This includes methods for the v isualization...Abbildung 2.3: Abbildung Messstrecke auf Video Array, nach [Adr91]. Die einzelnen CCD-Elemente integrieren dabei den durch die einfallenden Photonen erreg

  7. Performance Analysis of Video PHY Controller Using Unidirection and Bi-directional IO Standard via 7 Series FPGA

    DEFF Research Database (Denmark)

    Das, Bhagwan; Abdullah, M F L; Hussain, Dil muhammed Akbar

    2017-01-01

    The Video PHY controller offers an interface between transmitters/receivers and video ports. These video ports are categorized in HDMI or Displayport. HDMI Video PHY controller are mostly used for their high speed operation for high resolution graphics. However, the execution of high resolution...... graphics consumes more power, this creates a need of designing the low power design for Video PHY controller. In this paper, the performance of Video PHY controller is analyzed by comparing the power consumption of unidirectional and bi-directional IO Standard over 7 series FPGA. It is determined...... that total on-chip power is reduced for unidirectional IO Standard based Video PHY controller compared to bidirectional IO Standard based Video PHY controller. The most significant achievement of this work is that it is concluded that unidirectional IO Standard based Video PHY controller consume least...

  8. Distinguished Books. Notable Books of 2002; Best Books for Young Adults; Audiobooks for Young Adults; Quick Picks for Reluctant Young Adult Readers; Notable Children's Books; Notable Children's Videos; Notable Recordings for Children; Notable Software for Children; Bestsellers of 2002; Literary Prizes, 2002.

    Science.gov (United States)

    Maryles, Daisy; Riippa, Laurele; Ink, Gary

    2003-01-01

    Includes bibliographies of notable books of 2002, including fiction, nonfiction, and poetry; books for young adults, including fiction, nonfiction, audiobooks, and titles for reluctant readers; notable books for children; videos for children; children's recordings and software; bestsellers, fiction and nonfiction; paperback bestsellers; almanacs,…

  9. Distinguished Books. Notable Books of 2001; Best Books for Young Adults; Quick Picks for Reluctant Young Adult Readers; Audiobooks for Young Adults; Notable Children's Books; Notable Children's Videos; Notable Recordings for Children; Notable software and Web Sites for Children; Bestsellers of 2001; Literary Prizes, 2001.

    Science.gov (United States)

    Maryles, Daisy; Riippa, Laurele; Ink, Gary

    2002-01-01

    Presents bibliographies of notable books, best books for young adults, audiobooks for young adults, notable children's books, notable children's videos, notable recordings for children, and notable software and Web sites for children; discusses bestsellers; and lists literary prizes awarded in 2001. (LRW)

  10. Climate Science Communications - Video Visualization Techniques

    Science.gov (United States)

    Reisman, J. P.; Mann, M. E.

    2010-12-01

    Communicating Climate science is challenging due to it's complexity. But as they say, a picture is worth a thousand words. Visualization techniques can be merely graphical or combine multimedia so as to make graphs come alive in context with other visual and auditory cues. This can also make the information come alive in a way that better communicates what the science is all about. What types of graphics to use depends on your audience, some graphs are great for scientists but if you are trying to communicate to a less sophisticated audience, certain visuals translate information in a more easily perceptible manner. Hollywood techniques and style can be applied to these graphs to give them even more impact. Video is one of the most powerful communication tools in its ability to combine visual and audio through time. Adding music and visual cues such as pans and zooms can greatly enhance the ability to communicate your concepts. Video software ranges from relatively simple to very sophisticated. In reality, you don't need the best tools to get your point across. In fact, with relatively inexpensive software, you can put together powerful videos that more effectively convey the science you are working on with greater sophistication, and in an entertaining way. We will examine some basic techniques to increase the quality of video visualization to make it more effective in communicating complexity. If a picture is worth a thousand words, a decent video with music, and a bit of narration is priceless.

  11. Fractal geometry and computer graphics

    CERN Document Server

    Sakas, Georgios; Peitgen, Heinz-Otto; Englert, Gabriele

    1992-01-01

    Fractal geometry has become popular in the last 15 years, its applications can be found in technology, science, or even arts. Fractal methods and formalism are seen today as a general, abstract, but nevertheless practical instrument for the description of nature in a wide sense. But it was Computer Graphics which made possible the increasing popularity of fractals several years ago, and long after their mathematical formulation. The two disciplines are tightly linked. The book contains the scientificcontributions presented in an international workshop in the "Computer Graphics Center" in Darmstadt, Germany. The target of the workshop was to present the wide spectrum of interrelationships and interactions between Fractal Geometry and Computer Graphics. The topics vary from fundamentals and new theoretical results to various applications and systems development. All contributions are original, unpublished papers.The presentations have been discussed in two working groups; the discussion results, together with a...

  12. 10-Second Demos: Boiling Asynchronous Online Instruction down to the Essentials with GIF Graphics

    Science.gov (United States)

    Aleman, Karla J.; Porter, Toccara D.

    2016-01-01

    Connecting with text-weary students can be a challenge in the online instructional environment. Librarians have often developed screencast videos and integrated screenshots into online learning objects to teach students basic research skills. An alternative technology, graphical interchange format (GIF), may prove to be an excellent blend of the…

  13. Collection Of Software For Computer Graphics

    Science.gov (United States)

    Hibbard, Eric A.; Makatura, George

    1990-01-01

    Ames Research Graphics System (ARCGRAPH) collection of software libraries and software utilities assisting researchers in generating, manipulating, and visualizing graphical data. Defines metafile format containing device-independent graphical data. File format used with various computer-graphics-manipulation and -animation software packages at Ames, including SURF (COSMIC Program ARC-12381) and GAS (COSMIC Program ARC-12379). Consists of two-stage "pipeline" used to put out graphical primitives. ARCGRAPH libraries developed on VAX computer running VMS.

  14. Real-time pulmonary graphics.

    Science.gov (United States)

    Mammel, Mark C; Donn, Steven M

    2015-06-01

    Real-time pulmonary graphics now enable clinicians to view lung mechanics and patient-ventilator interactions on a breath-to-breath basis. Displays of pressure, volume, and flow waveforms, pressure-volume and flow-volume loops, and trend screens enable clinicians to customize ventilator settings based on the underlying pathophysiology and responses of the individual patient. This article reviews the basic concepts of pulmonary graphics and demonstrates how they contribute to our understanding of respiratory physiology and the management of neonatal respiratory failure. Copyright © 2015 Elsevier Ltd. All rights reserved.

  15. Fluid simulation for computer graphics

    CERN Document Server

    Bridson, Robert

    2008-01-01

    Animating fluids like water, smoke, and fire using physics-based simulation is increasingly important in visual effects, in particular in movies, like The Day After Tomorrow, and in computer games. This book provides a practical introduction to fluid simulation for graphics. The focus is on animating fully three-dimensional incompressible flow, from understanding the math and the algorithms to the actual implementation.

  16. GRAPHIC INTERFACES FOR ENGINEERING APPLICATIONS

    Directory of Open Access Journals (Sweden)

    Ion PANA,

    2012-05-01

    Full Text Available Using effective the method of calculating Fitness for Service requires the achievement of graphical interfaces. This paper presents an example of such interfaces, made with Visual Basic program and used in the evaluation of pipelines in a research contract [4

  17. Real-time volume graphics

    CERN Document Server

    Engel, Klaus; Kniss, Joe; Rezk-Salama, Christof; Weiskopf, Daniel

    2006-01-01

    Based on course notes of SIGGRAPH course teaching techniques for real-time rendering of volumetric data and effects; covers both applications in scientific visualization and real-time rendering. Starts with the basics (texture-based ray casting) and then improves and expands the algorithms incrementally. Book includes source code, algorithms, diagrams, and rendered graphics.

  18. Storytelling technique in Turkish rap music : a music video

    OpenAIRE

    Karakurluk, Bedirhan

    2012-01-01

    Ankara : The Department of Graphic Design, İhsan Doğramacı Bilkent University, 2012. Thesis (Master's) -- Bilkent University, 2012. Includes bibliographical references leaves 60-63. This thesis analyzes the storytelling technique in Turkish rap music in the context of hip-hop culture’s content and history, argues its narrative background, seeks answer to what are the mainstream components of Turkish rap music videos, and examines the music video created for this thesis as...

  19. A Case Study of Trust Issues in Scientific Video Collections

    NARCIS (Netherlands)

    E.M.A.L. Beauxis-Aussalet (Emmanuelle); E. Arslanova (Elvira); L. Hardman (Lynda); J.R. van Ossenbruggen (Jacco)

    2013-01-01

    htmlabstractIn-situ video recording of underwater ecosystems is able to provide valuable information for biology research and natural resources management, e.g. changes in species abundance. Searching the videos manually, however, requires costly human effort. Our video analysis tool supports the

  20. 47 CFR 76.1710 - Operator interests in video programming.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Operator interests in video programming. 76....1710 Operator interests in video programming. (a) Cable operators are required to maintain records in... interests in all video programming services as well as information regarding their carriage of such...

  1. Video Playback Modifications for a DSpace Repository

    Directory of Open Access Journals (Sweden)

    Keith Gilbertson

    2016-01-01

    Full Text Available This paper focuses on modifications to an institutional repository system using the open source DSpace software to support playback of digital videos embedded within item pages. The changes were made in response to the formation and quick startup of an event capture group within the library that was charged with creating and editing video recordings of library events and speakers. This paper specifically discusses the selection of video formats, changes to the visual theme of the repository to allow embedded playback and captioning support, and modifications and bug fixes to the file downloading subsystem to enable skip-ahead playback of videos via byte-range requests. This paper also describes workflows for transcoding videos in the required formats, creating captions, and depositing videos into the repository.

  2. The Learning Potential of Video Sketching

    DEFF Research Database (Denmark)

    Gundersen, Peter Bukovica; Ørngreen, Rikke; Hautopp, Heidi

    2017-01-01

    This paper introduces a video sketching technique applied to learning settings and investigates what participants learn from creating and redesigning videos while sketching. This process links various sketching techniques and creative reflection processes to video productions. Traditionally......, designers across various disciplines have used sketching as an integrative part of their everyday practice, and sketching has proven to have a multitude of purposes in professional design. The purpose of this paper is to explore what happens when an extra layer of video recording is added during the early...... sketching phases. Using empirical examples, this paper presents and discusses the video recording of sketching sessions. The empirical data is based on workshop sessions with researchers, students and teachers. Inspired by the work of Olofsson and Sjölén (2007), the sketching sessions were organised...

  3. Low complexity video encoding for UAV inspection

    DEFF Research Database (Denmark)

    Søgaard, Jacob; Zhang, Ruo; Forchhammer, Søren

    2016-01-01

    In this work we present several methods for fast integer motion estimation of videos recorded aboard an Unmanned Aerial Vehicle (UAV). Different from related work, the field depth is not considered to be consistent. The novel methods designed for low complexity MV prediction in H.264/AVC and anal......In this work we present several methods for fast integer motion estimation of videos recorded aboard an Unmanned Aerial Vehicle (UAV). Different from related work, the field depth is not considered to be consistent. The novel methods designed for low complexity MV prediction in H.264/AVC...... for UAV infrared (IR) video are also provided....

  4. Jump frequency may contribute to risk of jumper's knee: a study of interindividual and sex differences in a total of 11,943 jumps video recorded during training and matches in young elite volleyball players.

    Science.gov (United States)

    Bahr, Martin A; Bahr, Roald

    2014-09-01

    Male sex, total training volume (number of hours per week) and match exposure (number of sets played per week) are risk factors for jumper's knee among young elite volleyball players. However, it is not known whether jump frequency differs among players on the same squad. To examine interindividual and sex differences in jump frequency during training and matches in young elite volleyball players. Observational study. Norwegian elite volleyball boarding school training programme. Student-athletes (26 boys and 18 girls, 16-18 years). Individual jump counts were recorded based on visual analysis of video recordings obtained from 1 week of volleyball training (9 training sessions for boys and 10 for girls, 14.1 h and 17.8 h of training, respectively) and 10 matches (5.9 h for boys (16 sets) and 7.7 h for girls (21 sets). A total of 11,943 jumps were recorded, 4138 during matches and 7805 during training. As training attendance and jump frequency varied substantially between players, the total exposure in training ranged from 50 to 666 jumps/week among boys and from 11 to 251 jumps/week among girls. On average, this corresponded to 35.7 jumps/h for boys and 13.7 jumps/h for girls (Student t test, p=0.002). Total jump exposure during matches ranged between 1 and 339 jumps among boys and between 0 and 379 jumps among girls, corresponding to an average jump frequency of 62.2 jumps/h for boys and 41.9 jumps/h for girls (Student t test, pvolleyball players. Total jump volume may represent a more important risk factor for jumper's knee than total training volume, warranting further research attention. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  5. Language teaching and graphic colonial.

    Directory of Open Access Journals (Sweden)

    Sandra Yaneth Chaparro Cardozo

    2015-03-01

    Full Text Available In the present study a reflection of the colonial baroque ornamentation from education and graphic blocks; analyzing aspects such as creating maps of the Basilica Church Cathedral Santiago de Tunja. This research tests the interpretation of the drawing and construction of ornamental figures of the native nature of the region in the colonies of the city of Tunja, Boyacá churches. This study of the visual reconstruction of the routes that make a group of children on the reinterpretation of the design in the construction of maps of colonial baroque in the creation and graphic composition. Given the importance of aesthetics in the visual language manuals maples ornaments of the cathedral with a look from the pedagogy and education in studies of iconography Erwin Panofsky in understanding the phenomenon of space. 

  6. Graphical Multiprocessing Analysis Tool (GMAT)

    Energy Technology Data Exchange (ETDEWEB)

    Seager, M.K.; Campbell, S.; Sikora, S.; Strout, R.; Zosel, M.

    1988-03-01

    The design and debugging of parallel programs is a difficult task due to the complex synchronization and data scoping issues involed. to aid the programmer in paralle code dvelopment we have developed two methodologies for the graphical display of execution of parallel codes. The Graphical Multiprocessing Analysis Tools (GMAT) consist of stategraph, which represents an inheritance tree of task states, and timeline, which represens task as flowing sequence of events. Information about the code can be displayed as the application runs (dynamic mode) or played back with time under user control (static mode). This document discusses the design and user interface issues involved in developing the parallel application display GMAT family. Also, we present an introductory user's guide for both tools. 4 figs.

  7. Computer Graphics and Administrative Decision-Making.

    Science.gov (United States)

    Yost, Michael

    1984-01-01

    Reduction in prices now makes it possible for almost any institution to use computer graphics for administrative decision making and research. Current and potential uses of computer graphics in these two areas are discussed. (JN)

  8. Computer Graphics for Multimedia and Hypermedia Development.

    Science.gov (United States)

    Mohler, James L.

    1998-01-01

    Discusses several theoretical and technical aspects of computer-graphics development that are useful for creating hypermedia and multimedia materials. Topics addressed include primary bitmap attributes in computer graphics, the jigsaw principle, and raster layering. (MSE)

  9. Implementing custom graphics in Stata

    OpenAIRE

    Sergiy Radyakin

    2009-01-01

    Stata provides a fairly extensive set of graphs. However sometimes users need to implement custom graphs, which are not yet available. In some cases it is possible to “tweak” a standard graph so that it results in the desired image; in other cases it is not possible. Stata uses complex system of objects implemented as classes and heavily relies on inheritance, polymorphism and overriding to implement its graphics. While standard class programming is well described in the Stata manuals, the pa...

  10. Language teaching and graphic colonial.

    OpenAIRE

    Sandra Yaneth Chaparro Cardozo

    2015-01-01

    In the present study a reflection of the colonial baroque ornamentation from education and graphic blocks; analyzing aspects such as creating maps of the Basilica Church Cathedral Santiago de Tunja. This research tests the interpretation of the drawing and construction of ornamental figures of the native nature of the region in the colonies of the city of Tunja, Boyacá churches. This study of the visual reconstruction of the routes that make a group of children on the reinterpretation of the ...

  11. Sparse Gaussian graphical mixture model

    OpenAIRE

    ANANI, Lotsi; WIT, Ernst

    2016-01-01

    This paper considers the problem of networks reconstruction from heterogeneous data using a Gaussian Graphical Mixture Model (GGMM). It is well known that parameter estimation in this context is challenging due to large numbers of variables coupled with the degenerate nature of the likelihood. We propose as a solution a penalized maximum likelihood technique by imposing an l1 penalty on the precision matrix. Our approach shrinks the parameters thereby resulting in better identifiability and v...

  12. Graphical Classification of Entangled Qutrits

    Directory of Open Access Journals (Sweden)

    Kentaro Honda

    2012-10-01

    Full Text Available A multipartite quantum state is entangled if it is not separable. Quantum entanglement plays a fundamental role in many applications of quantum information theory, such as quantum teleportation. Stochastic local quantum operations and classical communication (SLOCC cannot essentially change quantum entanglement without destroying it. Therefore, entanglement can be classified by dividing quantum states into equivalence classes, where two states are equivalent if each can be converted into the other by SLOCC. Properties of this classification, especially in the case of non two-dimensional quantum systems, have not been well studied. Graphical representation is sometimes used to clarify the nature and structural features of entangled states. SLOCC equivalence of quantum bits (qubits has been described graphically via a connection between tripartite entangled qubit states and commutative Frobenius algebras (CFAs in monoidal categories. In this paper, we extend this method to qutrits, i.e., systems that have three basis states. We examine the correspondence between CFAs and tripartite entangled qutrits. Using the symmetry property, which is required by the definition of a CFA, we find that there are only three equivalence classes that correspond to CFAs. We represent qutrits graphically, using the connection to CFAs. We derive equations that characterize the three equivalence classes. Moreover, we show that any qutrit can be represented as a composite of three graphs that correspond to the three classes.

  13. 3D Graphics with Spreadsheets

    Directory of Open Access Journals (Sweden)

    Jan Benacka

    2009-06-01

    Full Text Available In the article, the formulas for orthographic parallel projection of 3D bodies on computer screen are derived using secondary school vector algebra. The spreadsheet implementation is demonstrated in six applications that project bodies with increasing intricacy – a convex body (cube with non-solved visibility, convex bodies (cube, chapel with solved visibility, a coloured convex body (chapel with solved visibility, and a coloured non-convex body (church with solved visibility. The projections are revolvable in horizontal and vertical plane, and they are changeable in size. The examples show an unusual way of using spreadsheets as a 3D computer graphics tool. The applications can serve as a simple introduction to the general principles of computer graphics, to the graphics with spreadsheets, and as a tool for exercising stereoscopic vision. The presented approach is usable at visualising 3D scenes within some topics of secondary school curricula as solid geometry (angles and distances of lines and planes within simple bodies or analytic geometry in space (angles and distances of lines and planes in E3, and even at university level within calculus at visualising graphs of z = f(x,y functions. Examples are pictured.

  14. Debugging software with animated graphics

    Science.gov (United States)

    Horn, Dawn; Scrip, Becky; Scrip, Bill

    1997-07-01

    The traditional use of graphics and animation in engineering software development has been to demonstrate the function and utility of individual engineering tools. This paper illustrates the use of graphical rendering and animation for debugging large integrated simulations. The tools presented are part of the THAAD integrated system effectiveness simulation (TISES). TISES has integrated different segment software models to be able to perform analysis of a full THAAD (theater high altitude area defense) battalion. Within each model are implicit coordinates, transformations, reference values (i.e. earth radius) used which may or may not match those of adjacent models. Each interface or integration between the models introduces a source of error. TISES also utilized many different input parameters from a variety of external sources that can be a source of error. The TISES development team has found graphics and animation to be extremely helpful in testing and debugging these interface problems. This paper includes examples of input data verification, model to model interface, and model versus model perceptions that have been utilized in TISES development.

  15. Graphical Language for Data Processing

    Science.gov (United States)

    Alphonso, Keith

    2011-01-01

    A graphical language for processing data allows processing elements to be connected with virtual wires that represent data flows between processing modules. The processing of complex data, such as lidar data, requires many different algorithms to be applied. The purpose of this innovation is to automate the processing of complex data, such as LIDAR, without the need for complex scripting and programming languages. The system consists of a set of user-interface components that allow the user to drag and drop various algorithmic and processing components onto a process graph. By working graphically, the user can completely visualize the process flow and create complex diagrams. This innovation supports the nesting of graphs, such that a graph can be included in another graph as a single step for processing. In addition to the user interface components, the system includes a set of .NET classes that represent the graph internally. These classes provide the internal system representation of the graphical user interface. The system includes a graph execution component that reads the internal representation of the graph (as described above) and executes that graph. The execution of the graph follows the interpreted model of execution in that each node is traversed and executed from the original internal representation. In addition, there are components that allow external code elements, such as algorithms, to be easily integrated into the system, thus making the system infinitely expandable.

  16. Modeling 3D Unknown object by Range Finder and Video Camera ...

    African Journals Online (AJOL)

    Computer-generated and video images are superimposed. The man-machine interface functions deal mainly with on line building of graphic aids to improve perception, updating the geometric database of the robotic site, and video control of the robot. The superimposition of the real and virtual worlds is carried out through ...

  17. Data structures, computer graphics, and pattern recognition

    CERN Document Server

    Klinger, A; Kunii, T L

    1977-01-01

    Data Structures, Computer Graphics, and Pattern Recognition focuses on the computer graphics and pattern recognition applications of data structures methodology.This book presents design related principles and research aspects of the computer graphics, system design, data management, and pattern recognition tasks. The topics include the data structure design, concise structuring of geometric data for computer aided design, and data structures for pattern recognition algorithms. The survey of data structures for computer graphics systems, application of relational data structures in computer gr

  18. THE AUTHENTICATION PROCESS USING GRAPHICAL PASSWORDS

    Directory of Open Access Journals (Sweden)

    Sergei N. Davydov

    2015-01-01

    Full Text Available In this article the authors review the using of graphical passwords for authentication. The main advantage of this authentication is the users friendly approach. However, with multiple browsing of the logon session, the attacker can see and understand the password. To avoid this drawback, the authors recommend to use dynamic graphical passwords. On three examples of dynamic graphical authentication article demonstrates how with user-friendly, graphical password can be stable. 

  19. GRAPHIC EDUCATION/COMMUNICATION IN SECTIONAL VIEWS

    OpenAIRE

    ADÎR Victor; Pavel, Adrian; ADÎR George

    2006-01-01

    The importance of graphic communication is evidently comparing it with word language. To describe in words a technical drawing is not an easy work, but knowing methods, principles, rules and symbols you may understand it as a graphic communication. Engineering is applied science and graphic communication must be complete and accurate. Of course, the written word completes many descriptions. But whenever pieces, structures and surfaces are designed, described and built, graphic rep...

  20. Towards art content in original graphic arts

    OpenAIRE

    Grdina, Sonja

    2011-01-01

    Contemporary Graphic art defines numerous graphic art techniques; from classical original graphic art techniques to the new media techniques. The new media reproduction and communication capacity influences contemporary art works in such way that more attention is on non-artistic content, while artistic content with its visual efficiency becomes less important. Reproductibility is one of the non-artistic contents which plays a key role in original graphic arts, where it is a means of making o...

  1. Quality of Experience Assessment of Video Quality in Social Clouds

    Directory of Open Access Journals (Sweden)

    Asif Ali Laghari

    2017-01-01

    Full Text Available Video sharing on social clouds is popular among the users around the world. High-Definition (HD videos have big file size so the storing in cloud storage and streaming of videos with high quality from cloud to the client are a big problem for service providers. Social clouds compress the videos to save storage and stream over slow networks to provide quality of service (QoS. Compression of video decreases the quality compared to original video and parameters are changed during the online play as well as after download. Degradation of video quality due to compression decreases the quality of experience (QoE level of end users. To assess the QoE of video compression, we conducted subjective (QoE experiments by uploading, sharing, and playing videos from social clouds. Three popular social clouds, Facebook, Tumblr, and Twitter, were selected to upload and play videos online for users. The QoE was recorded by using questionnaire given to users to provide their experience about the video quality they perceive. Results show that Facebook and Twitter compressed HD videos more as compared to other clouds. However, Facebook gives a better quality of compressed videos compared to Twitter. Therefore, users assigned low ratings for Twitter for online video quality compared to Tumblr that provided high-quality online play of videos with less compression.

  2. Metadata trust in a personal video recorder

    NARCIS (Netherlands)

    Boertjes, E.M.

    2004-01-01

    Trust is the belief or confidence in someone that their recommendations will work for you, i.e. that you will like the TV-programs (or other content) that they recommend. Many systems incorporate some notion of trust. Trust is more than similarity in taste, which makes trust a broader concept than

  3. A quick guide to video-tracking birds

    OpenAIRE

    Bluff, Lucas A; Rutz, Christian

    2008-01-01

    Video tracking is a powerful new tool for studying natural undisturbed behaviour in a wide range of birds, mammals and reptiles. Using integrated animal-borne video tags, video footage and positional data are recorded simultaneously from wild free-ranging animals. At the analysis stage, video scenes are linked to radio fixes, yielding an animal's eye view of resource use and social interactions along a known movement trajectory. Here, we provide a brief description of our basic equipment and ...

  4. Exchanging digital video of laryngeal examinations.

    Science.gov (United States)

    Crump, John M; Deutsch, Thomas

    2004-03-01

    Laryngeal examinations, especially stroboscopic examinations, are increasingly recorded using digital video formats on computer media, rather than using analog formats on videotape. It would be useful to share these examinations with other medical professionals in formats that would facilitate reliable and high-quality playback on a personal computer by the recipients. Unfortunately, a personal computer is not well designed for reliable presentation of artifact-free video. It is particularly important that laryngeal video play without artifacts of motion or color because these are often the characteristics of greatest clinical interest. With proper tools and procedures, and with reasonable compromises in image resolution and the duration of the examination, digital video of laryngeal examinations can be reliably exchanged. However, the tools, procedures, and formats for recording, converting to another digital format ("transcoding"), communicating, copying, and playing digital video with a personal computer are not familiar to most medical professionals. Some understanding of digital video and the tools available is required of those wanting to exchange digital video. Best results are achieved by recording to a digital format best suited for recording (such as MJPEG or DV),judiciously selecting a segment of the recording for sharing, and converting to a format suited to distribution (such as MPEG1 or MPEG2) using a medium suited to the situation (such as e-mail attachment, CD-ROM, a "clip" within a Microsoft PowerPoint presentation, or DVD-Video). If digital video is sent to a colleague, some guidance on playing files and using a PC media player is helpful.

  5. Minard's Graphic of Napoleon in Russia.

    Science.gov (United States)

    Hardy, Charles

    1992-01-01

    Describes the use of Charles Minard's graphic of Napoleon's 1812 Russian Campaign as an instructional tool in history classes. Maintains that the graphic, created in 1861, can be analyzed by students to determine six historical and geographical factors involved in Napoleon's defeat. Includes a copy of Minard's graphic. (CFR)

  6. Lean mainstream schemes for Stata 8 graphics

    DEFF Research Database (Denmark)

    Juul, Svend

    2003-01-01

    The new Stata 8 graphics are powerful and flexible. Now, a few months after the first release, the graphics still have some shortcomings—both in design and in the manual documenting the program—but progress is being made. The graph layout used throughout the Graphics Reference Manual has led some...

  7. Mathematical Creative Activity and the Graphic Calculator

    Science.gov (United States)

    Duda, Janina

    2011-01-01

    Teaching mathematics using graphic calculators has been an issue of didactic discussions for years. Finding ways in which graphic calculators can enrich the development process of creative activity in mathematically gifted students between the ages of 16-17 is the focus of this article. Research was conducted using graphic calculators with…

  8. Graphic Novels in Your School Library

    Science.gov (United States)

    Karp, Jesse

    2011-01-01

    Many educators now agree that graphic novels inform as well as entertain, and to dismiss the educational potential of the graphic novel is to throw away a golden opportunity to reach out to young readers. This dynamic book takes a look at the term "graphic novel," how the format has become entwined in our culture, and the ways in which graphic…

  9. Graphic Design Is Not a Medium.

    Science.gov (United States)

    Gruber, John Edward, Jr.

    2001-01-01

    Discusses graphic design and reviews its development from analog processes to a digital tool with the use of computers. Topics include graphical user interfaces; the need for visual communication concepts; transmedia as opposed to repurposing; and graphic design instruction in higher education. (LRW)

  10. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... NEI YouTube Videos > NEI YouTube Videos: Amblyopia NEI YouTube Videos YouTube Videos Home Age-Related Macular Degeneration ... Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia Embedded video for NEI YouTube Videos: ...

  11. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... YouTube Videos > NEI YouTube Videos: Amblyopia NEI YouTube Videos YouTube Videos Home Age-Related Macular Degeneration Amblyopia ... of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia Embedded video for NEI YouTube Videos: Amblyopia ...

  12. NEI You Tube Videos: Amblyopia

    Science.gov (United States)

    ... YouTube Videos > NEI YouTube Videos: Amblyopia NEI YouTube Videos YouTube Videos Home Age-Related Macular Degeneration Amblyopia ... of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia Embedded video for NEI YouTube Videos: Amblyopia ...

  13. Making Sense of Video Analytics: Lessons Learned from Clickstream Interactions, Attitudes, and Learning Outcome in a Video-Assisted Course

    Directory of Open Access Journals (Sweden)

    Michail N. Giannakos

    2015-02-01

    Full Text Available Online video lectures have been considered an instructional media for various pedagogic approaches, such as the flipped classroom and open online courses. In comparison to other instructional media, online video affords the opportunity for recording student clickstream patterns within a video lecture. Video analytics within lecture videos may provide insights into student learning performance and inform the improvement of video-assisted teaching tactics. Nevertheless, video analytics are not accessible to learning stakeholders, such as researchers and educators, mainly because online video platforms do not broadly share the interactions of the users with their systems. For this purpose, we have designed an open-access video analytics system for use in a video-assisted course. In this paper, we present a longitudinal study, which provides valuable insights through the lens of the collected video analytics. In particular, we found that there is a relationship between video navigation (repeated views and the level of cognition/thinking required for a specific video segment. Our results indicated that learning performance progress was slightly improved and stabilized after the third week of the video-assisted course. We also found that attitudes regarding easiness, usability, usefulness, and acceptance of this type of course remained at the same levels throughout the course. Finally, we triangulate analytics from diverse sources, discuss them, and provide the lessons learned for further development and refinement of video-assisted courses and practices.

  14. A handbook of statistical graphics using SAS ODS

    CERN Document Server

    Der, Geoff

    2014-01-01

    An Introduction to Graphics: Good Graphics, Bad Graphics, Catastrophic Graphics and Statistical GraphicsThe Challenger DisasterGraphical DisplaysA Little History and Some Early Graphical DisplaysGraphical DeceptionAn Introduction to ODS GraphicsGenerating ODS GraphsODS DestinationsStatistical Graphics ProceduresODS Graphs from Statistical ProceduresControlling ODS GraphicsControlling Labelling in GraphsODS Graphics EditorGraphs for Displaying the Characteristics of Univariate Data: Horse Racing, Mortality Rates, Forearm Lengths, Survival Times and Geyser EruptionsIntroductionPie Chart, Bar Cha

  15. Medical Students' Perceptions of Video-Linked Lectures and Video-Streaming

    Science.gov (United States)

    Wang, RuoLan; Mattick, Karen; Dunne, Elisabeth

    2010-01-01

    Video-linked lectures allow healthcare students across multiple sites, and between university and hospital bases, to come together for the purposes of shared teaching. Recording and streaming video-linked lectures allows students to view them at a later date and provides an additional resource to support student learning. As part of a UK Higher…

  16. Rheumatoid Arthritis Educational Video Series

    Medline Plus

    Full Text Available ... Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos was designed ... Activity Role of Body Weight in Osteoarthritis Educational Videos for Patients Rheumatoid Arthritis Educational Video Series Psoriatic ...

  17. Graphic Presentation: An Empirical Examination of the Graphic Novel Approach to Communicate Business Concepts

    Science.gov (United States)

    Short, Jeremy C.; Randolph-Seng, Brandon; McKenny, Aaron F.

    2013-01-01

    Graphic novels have been increasingly incorporated into business communication forums. Despite potential benefits, little research has examined the merits of the graphic novel approach. In response, we engage in a two-study approach. Study 1 explores the potential of graphic novels to affect learning outcomes and finds that the graphic novel was…

  18. 77 FR 65582 - Quad Graphics, Inc., Including Workers Whose Wages Were Reported Under Quad Graphics Printing...

    Science.gov (United States)

    2012-10-29

    ... Quad Graphics Printing Corp. and Quad Logistics Services, Effingham, IL; Amended Certification... wages reported under Quad Graphics, Inc., Quad Graphics Printing Corp., and Quad Logistics Services. The... Graphics Printing Corp. and Quad Logistics Services (TA-W-73,441H), who became totally or partially...

  19. Measuring Cognitive Load in Test Items: Static Graphics versus Animated Graphics

    Science.gov (United States)

    Dindar, M.; Kabakçi Yurdakul, I.; Inan Dönmez, F.

    2015-01-01

    The majority of multimedia learning studies focus on the use of graphics in learning process but very few of them examine the role of graphics in testing students' knowledge. This study investigates the use of static graphics versus animated graphics in a computer-based English achievement test from a cognitive load theory perspective. Three…

  20. Automatic Association of Chats and Video Tracks for Activity Learning and Recognition in Aerial Video Surveillance

    Directory of Open Access Journals (Sweden)

    Riad I. Hammoud

    2014-10-01

    Full Text Available We describe two advanced video analysis techniques, including video-indexed by voice annotations (VIVA and multi-media indexing and explorer (MINER. VIVA utilizes analyst call-outs (ACOs in the form of chat messages (voice-to-text to associate labels with video target tracks, to designate spatial-temporal activity boundaries and to augment video tracking in challenging scenarios. Challenging scenarios include low-resolution sensors, moving targets and target trajectories obscured by natural and man-made clutter. MINER includes: (1 a fusion of graphical track and text data using probabilistic methods; (2 an activity pattern learning framework to support querying an index of activities of interest (AOIs and targets of interest (TOIs by movement type and geolocation; and (3 a user interface to support streaming multi-intelligence data processing. We also present an activity pattern learning framework that uses the multi-source associated data as training to index a large archive of full-motion videos (FMV. VIVA and MINER examples are demonstrated for wide aerial/overhead imagery over common data sets affording an improvement in tracking from video data alone, leading to 84% detection with modest misdetection/false alarm results due to the complexity of the scenario. The novel use of ACOs and chat Sensors 2014, 14 19844 messages in video tracking paves the way for user interaction, correction and preparation of situation awareness reports.

  1. 61214++++','DOAJ-ART-EN'); return false;" href="+++++https://jual.nipissingu.ca/wp-content/uploads/sites/25/2014/06/v61214.m4v">61214++++">Jailed - Video

    Directory of Open Access Journals (Sweden)

    Cameron CULBERT

    2012-07-01

    Full Text Available As the public education system in Northern Ontario continues to take a downward spiral, a plethora of secondary school students are being placed in an alternative educational environment. Juxtaposing the two educational settings reveals very similar methods and characteristics of educating our youth as opposed to using a truly alternative approach to education. This video reviews the relationship between public education and alternative education in a remote Northern Ontario setting. It is my belief that the traditional methods of teaching are not appropriate in educating at risk students in alternative schools. Paper and pencil worksheets do not motivate these students to learn and succeed. Alternative education should emphasize experiential learning, a just in time curriculum based on every unique individual and the students true passion for everyday life. Cameron Culbert was born on February 3rd, 1977 in North Bay, Ontario. His teenage years were split between attending public school and his willed curriculum on the ski hill. Culbert spent 10 years (1996-2002 & 2006-2010 competing for Canada as an alpine ski racer. His passion for teaching and coaching began as an athlete and has now transferred into the classroom and the community. As a graduate of Nipissing University (BA, BEd, MEd. Camerons research interests are alternative education, physical education and technology in the classroom. Currently Cameron is an active educator and coach in Northern Ontario.

  2. Some Thoughts on Contemporary Graphic Print

    Directory of Open Access Journals (Sweden)

    Stefan Skiba

    2016-09-01

    Full Text Available The production requirements of original graphic works of art have changed since 1980. The development of digital printing using lightfast colors now rivals traditional techniques such as wood cut, screen print, lithography, etching etc. Today, with respect to artistic legitimacy, original graphics using traditional printing techniques compete with original graphics produced by digital printing techniques on the art market. What criteria distinguish traditional printing techniques from those of digital printing in the production and acquisition of original graphics? What consequences is the serious artist faced with when deciding to implement digital print production? How does digital print change original graphic acquisition decisions?

  3. Advanced Visualization and Interactive Display Rapid Innovation and Discovery Evaluation Research Program task 8: Survey of WEBGL Graphics Engines

    Science.gov (United States)

    2015-01-01

    file formats including DDS, JPG , PNG and TGA. It has occlusion queries. It provides video playback support including WebM, and MP4. It can render...identify potential graphics engines based on a variety of different factors. Many factors are taken into consideration when determining if a...lens flares, and multi-views. It has texture support including render target textures, dynamic textures, video textures, compressed DDS textures, and 2D

  4. Video Design Games

    DEFF Research Database (Denmark)

    Smith, Rachel Charlotte; Christensen, Kasper Skov; Iversen, Ole Sejer

    We introduce Video Design Games to train educators in teaching design. The Video Design Game is a workshop format consisting of three rounds in which participants observe, reflect and generalize based on video snippets from their own practice. The paper reports on a Video Design Game workshop...

  5. A system for endobronchial video analysis

    Science.gov (United States)

    Byrnes, Patrick D.; Higgins, William E.

    2017-03-01

    Image-guided bronchoscopy is a critical component in the treatment of lung cancer and other pulmonary disorders. During bronchoscopy, a high-resolution endobronchial video stream facilitates guidance through the lungs and allows for visual inspection of a patient's airway mucosal surfaces. Despite the detailed information it contains, little effort has been made to incorporate recorded video into the clinical workflow. Follow-up procedures often required in cancer assessment or asthma treatment could significantly benefit from effectively parsed and summarized video. Tracking diagnostic regions of interest (ROIs) could potentially better equip physicians to detect early airway-wall cancer or improve asthma treatments, such as bronchial thermoplasty. To address this need, we have developed a system for the postoperative analysis of recorded endobronchial video. The system first parses an input video stream into endoscopic shots, derives motion information, and selects salient representative key frames. Next, a semi-automatic method for CT-video registration creates data linkages between a CT-derived airway-tree model and the input video. These data linkages then enable the construction of a CT-video chest model comprised of a bronchoscopy path history (BPH) - defining all airway locations visited during a procedure - and texture-mapping information for rendering registered video frames onto the airwaytree model. A suite of analysis tools is included to visualize and manipulate the extracted data. Video browsing and retrieval is facilitated through a video table of contents (TOC) and a search query interface. The system provides a variety of operational modes and additional functionality, including the ability to define regions of interest. We demonstrate the potential of our system using two human case study examples.

  6. Characterization of social video

    Science.gov (United States)

    Ostrowski, Jeffrey R.; Sarhan, Nabil J.

    2009-01-01

    The popularity of social media has grown dramatically over the World Wide Web. In this paper, we analyze the video popularity distribution of well-known social video websites (YouTube, Google Video, and the AOL Truveo Video Search engine) and characterize their workload. We identify trends in the categories, lengths, and formats of those videos, as well as characterize the evolution of those videos over time. We further provide an extensive analysis and comparison of video content amongst the main regions of the world.

  7. Understanding Graphic and Visual AIDS

    OpenAIRE

    Nuran, Ade Aini

    2016-01-01

    This study is aimed to understand how to read a graph and other visual aids. After learning about graph and the visual aids, the students are expected to be able to read a graph in a text and other visual aids. Further, they can make their own graph in telling something. The writer has two fold goals in creating graphics: 1. to make the data stand out on the page and 2. To make the data support the main purpose of the document as clearly and strongly as possible. Many technical pieces of writ...

  8. Flapjack--graphical genotype visualization.

    Science.gov (United States)

    Milne, Iain; Shaw, Paul; Stephen, Gordon; Bayer, Micha; Cardle, Linda; Thomas, William T B; Flavell, Andrew J; Marshall, David

    2010-12-15

    New software tools for graphical genotyping are required that can routinely handle the large data volumes generated by the high-throughput single-nucleotide polymorphism (SNP) platforms, genotyping-by-sequencing and other comparable genotyping technologies. Flapjack has been developed to facilitate analysis of these data, providing real time rendering with rapid navigation and comparisons between lines, markers and chromosomes, with visualization, sorting and querying based on associated data, such as phenotypes, quantitative trait loci or other mappable features. Flapjack is freely available for Microsoft Windows, Mac OS X, Linux and Solaris, and can be downloaded from http://bioinf.scri.ac.uk/flapjack .

  9. Graphic Design: Now in Production

    OpenAIRE

    Thorel, Benjamin

    2012-01-01

    Catalogue d’une imposante exposition co-organisée par le Walker Art Center de Minneapolis, et le National Design Museum Cooper-Hewitt de New York, Graphic Design : Now in Production ambitionne de cartographier les territoires du design graphique contemporain dans son acception la plus large possible. Identité visuelle, magazines, posters, typographie, webdesign ou génériques de film sont abordés dans cet ouvrage particulièrement dense. Des planches illustrées, agrémentées de commentaires, ren...

  10. Image and video search engine for the World Wide Web

    Science.gov (United States)

    Smith, John R.; Chang, Shih-Fu

    1997-01-01

    We describe a visual information system prototype for searching for images and videos on the World-Wide Web. New visual information in the form of images, graphics, animations and videos is being published on the Web at an incredible rate. However, cataloging this visual data is beyond the capabilities of current text-based Web search engines. In this paper, we describe a complete system by which visual information on the Web is (1) collected by automated agents, (2) processed in both text and visual feature domains, (3) catalogued and (4) indexed for fast search and retrieval. We introduce an image and video search engine which utilizes both text-based navigation and content-based technology for searching visually through the catalogued images and videos. Finally, we provide an initial evaluation based upon the cataloging of over one half million images and videos collected from the Web.

  11. Digital holographic interferometry accelerated with GPU: application in mechanical micro-deformation measurement operating at video rate

    Science.gov (United States)

    Múnera Ortiz, N.; Trujillo, C. A.; García-Sucerquia, J.

    2013-11-01

    The quantification of the deformations presented by mechanical parts is a useful tool for several applications in engineering; regularly this quantification is performed a posteriori. In this work, a digital holographic interferometer for measuring micro-deformation at video rate is presented. The interferometer is developed with the use of the parallel paradigm of CUDA™ (Compute Unified Device Architecture). A commercial Graphics Processor Unit (GPU) is used to accelerate phase processing from the recorded holograms. The proposed method can process record holograms of 1024x1024 pixels in 48 milliseconds. At the best performance of the method, it processes 21 frames per second (FPS). This benchmark surpasses 133-times the best performance of the method on a regular CPU.

  12. Important Cultural Properties Recorded By Means Of Holography

    Science.gov (United States)

    Katsuma, Hidetoshi; Sato, Koki

    1987-01-01

    There are many important properties in Japan. A teacup for tea ceremony in ancient time is shown in Fig.l. This one is easily recorded on Fresnel and Lippman holograms. Especially,color Lippman holography1)12) is good example. But wooden startue of Buda in Fig.2 is not removed to record. Reflection holographic stereograms(R.H.S)3)are used for one. This R.H.S is very interesting because of this ability to render a wide renge of input formates,such as photographic,video,computer-graphic,and movie images.Our experiments are made this R.H.S into color one.Red image is necessary to use He-Ne laser, blue and green is Ar laser.The flat type of R.H.S4) is useful for this experiment.To repair these properties will be remarkable progressive advanced by making use of computer-graphics and this R.H.S.

  13. Automated Video Quality Assessment for Deep-Sea Video

    Science.gov (United States)

    Pirenne, B.; Hoeberechts, M.; Kalmbach, A.; Sadhu, T.; Branzan Albu, A.; Glotin, H.; Jeffries, M. A.; Bui, A. O. V.

    2015-12-01

    Video provides a rich source of data for geophysical analysis, often supplying detailed information about the environment when other instruments may not. This is especially true of deep-sea environments, where direct visual observations cannot be made. As computer vision techniques improve and volumes of video data increase, automated video analysis is emerging as a practical alternative to labor-intensive manual analysis. Automated techniques can be much more sensitive to video quality than their manual counterparts, so performing quality assessment before doing full analysis is critical to producing valid results.Ocean Networks Canada (ONC), an initiative of the University of Victoria, operates cabled ocean observatories that supply continuous power and Internet connectivity to a broad suite of subsea instruments from the coast to the deep sea, including video and still cameras. This network of ocean observatories has produced almost 20,000 hours of video (about 38 hours are recorded each day) and an additional 8,000 hours of logs from remotely operated vehicle (ROV) dives. We begin by surveying some ways in which deep-sea video poses challenges for automated analysis, including: 1. Non-uniform lighting: Single, directional, light sources produce uneven luminance distributions and shadows; remotely operated lighting equipment are also susceptible to technical failures. 2. Particulate noise: Turbidity and marine snow are often present in underwater video; particles in the water column can have sharper focus and higher contrast than the objects of interest due to their proximity to the light source and can also influence the camera's autofocus and auto white-balance routines. 3. Color distortion (low contrast): The rate of absorption of light in water varies by wavelength, and is higher overall than in air, altering apparent colors and lowering the contrast of objects at a distance.We also describe measures under development at ONC for detecting and mitigating

  14. Identification of computer graphics objects

    Directory of Open Access Journals (Sweden)

    Rossinskyi Yu.M.

    2016-04-01

    Full Text Available The article is devoted to the use of computer graphics methods in problems of creating drawings, charts, drafting, etc. The widespread use of these methods requires the development of efficient algorithms for the identification of objects of drawings. The article analyzes the model-making algorithms for this problem and considered the possibility of reducing the time using graphics editing operations. Editing results in such operations as copying, moving and deleting objects specified images. These operations allow the use of a reliable identification of images of objects methods. For information on the composition of the image of the object along with information about the identity and the color should include information about the spatial location and other characteristics of the object (the thickness and style of contour lines, fill style, and so on. In order to enable the pixel image analysis to structure the information it is necessary to enable the initial code image objects color. The article shows the results of the implementation of the algorithm of encoding object identifiers. To simplify the process of building drawings of any kind, and reduce time-consuming, method of drawing objects identification is proposed based on the use as the ID information of the object color.

  15. Characterizing popularity dynamics of online videos

    Science.gov (United States)

    Ren, Zhuo-Ming; Shi, Yu-Qiang; Liao, Hao

    2016-07-01

    Online popularity has a major impact on videos, music, news and other contexts in online systems. Characterizing online popularity dynamics is nature to explain the observed properties in terms of the already acquired popularity of each individual. In this paper, we provide a quantitative, large scale, temporal analysis of the popularity dynamics in two online video-provided websites, namely MovieLens and Netflix. The two collected data sets contain over 100 million records and even span a decade. We characterize that the popularity dynamics of online videos evolve over time, and find that the dynamics of the online video popularity can be characterized by the burst behaviors, typically occurring in the early life span of a video, and later restricting to the classic preferential popularity increase mechanism.

  16. Initial utilization of the CVIRB video production facility

    Science.gov (United States)

    Parrish, Russell V.; Busquets, Anthony M.; Hogge, Thomas W.

    1987-02-01

    Video disk technology is one of the central themes of a technology demonstrator workstation being assembled as a man/machine interface for the Space Station Data Management Test Bed at Johnson Space Center. Langley Research Center personnel involved in the conception and implementation of this workstation have assembled a video production facility to allow production of video disk material for this propose. This paper documents the initial familiarization efforts in the field of video production for those personnel and that facility. Although the entire video disk production cycle was not operational for this initial effort, the production of a simulated disk on video tape did acquaint the personnel with the processes involved and with the operation of the hardware. Invaluable experience in storyboarding, script writing, audio and video recording, and audio and video editing was gained in the production process.

  17. An Evaluation of Educational Neurological Eye Movement Disorder Videos Posted on Internet Video Sharing Sites.

    Science.gov (United States)

    Hickman, Simon J

    2016-03-01

    Internet video sharing sites allow the free dissemination of educational material. This study investigated the quality and educational content of videos of eye movement disorders posted on such sites. Educational neurological eye movement videos were identified by entering the titles of the eye movement abnormality into the search boxes of the video sharing sites. Also, suggested links were followed from each video. The number of views, likes, and dislikes for each video were recorded. The videos were then rated for their picture and sound quality. Their educational value was assessed according to whether the video included a description of the eye movement abnormality, the anatomical location of the lesion (if appropriate), and the underlying diagnosis. Three hundred fifty-four of these videos were found on YouTube and Vimeo. There was a mean of 6,443 views per video (range, 1-195,957). One hundred nineteen (33.6%) had no form of commentary about the eye movement disorder shown apart from the title. Forty-seven (13.3%) contained errors in the title or in the text. Eighty (22.6%) had excellent educational value by describing the eye movement abnormality, the anatomical location of the lesion, and the underlying diagnosis. Of these, 30 also had good picture and sound quality. The videos with excellent educational value had a mean of 9.84 "likes" per video compared with 2.37 for those videos without a commentary (P educational value with good picture and sound quality had a mean of 10.23 "likes" per video (P = 0.004 vs videos with no commentary). There was no significant difference in the mean number of "dislikes" between those videos that had no commentary or which contained errors and those with excellent educational value. There are a large number of eye movement videos freely available on these sites; however, due to the lack of peer review, a significant number have poor educational value due to having no commentary or containing errors. The number of "likes

  18. A Correlational Study of Graphic Organizers and Science Achievement of English Language Learners

    Science.gov (United States)

    Clarke, William Gordon

    English language learners (ELLs) demonstrate lower academic performance and have lower graduation and higher dropout rates than their non-ELL peers. The primary purpose of this correlational quantitative study was to investigate the relationship between the use of graphic organizer-infused science instruction and science learning of high school ELLs. Another objective was to determine if the method of instruction, socioeconomic status (SES), gender, and English language proficiency (ELP) were predictors of academic achievement of high school ELLs. Data were gathered from a New York City (NYC) high school fall 2012-2013 archival records of 145 ninth-grade ELLs who had received biology instruction in freestanding English as a second language (ESL) classes, followed by a test of their learning of the material. Fifty-four (37.2%) of these records were of students who had learned science by the conventional textbook method, and 91 (62.8%) by using graphic organizers. Data analysis employed the Statistical Package for the Social Sciences (SPSS) software for multiple regression analysis, which found graphic organizer use to be a significant predictor of New York State Regents Living Environment (NYSRLE) test scores (p study findings noted graphic organizer use as advantageous for ELL science achievement. Recommendations made for practice were for (a) the adoption of graphic organizer infused-instruction, (b) establishment of a protocol for the implementation of graphic organizer-infused instruction, and (c) increased length of graphic organizer instructional time. Recommendations made for future research were (a) a replication quantitative correlational study in two or more high schools, (b) a quantitative quasi-experimental quantitative study to determine the influence of graphic organizer instructional intervention and ELL science achievement, (c) a quantitative quasi-experimental study to determine the effect of teacher-based factors on graphic organizer

  19. Face identification in videos from mobile cameras

    OpenAIRE

    Mu, Meiru; Spreeuwers, Lieuwe Jan; Veldhuis, Raymond N.J.

    2014-01-01

    It is still challenging to recognize faces reliably in videos from mobile camera, although mature automatic face recognition technology for still images has been available for quite some time. Suppose we want to be alerted when suspects appear in the recording of a police Body-Cam, even a good face matcher on still images would give many false alarms due to the uncontrolled conditions. This paper presents an approach to identify faces in videos from mobile cameras. A commercial face matcher F...

  20. Characterizing popularity dynamics of online videos

    OpenAIRE

    Ren, Zhuo-Ming; Shi; Liao, Hao

    2016-01-01

    Online popularity has a major impact on videos, music, news and other contexts in online systems. Characterizing online popularity dynamics is nature to explain the observed properties in terms of the already acquired popularity of each individual. In this paper, we provide a quantitative, large scale, temporal analysis of the popularity dynamics in two online video-provided websites, namely MovieLens and Netflix. The two collected data sets contain over 100 million records and even span...

  1. CONSIDERATIONS ABOUT APPLICATION OF GRAPHICAL CALCULUS

    Directory of Open Access Journals (Sweden)

    Anghel Alina Angelica

    2015-06-01

    Full Text Available Some typical engineering problems can be solved using graphical methods in an integrated way for knowledge of design, mathematics, mechanics and physics. This paper presents some graphical methods which improve student’s performances on streigth of intuitive interpretation, visualization and understanding solutions of engineering problems. The increased use of graphical methods adds another layer of interpretation to a given task requiring the coordination of different knowledge, in order to produce a correct solution and to improve the product design.

  2. Graphical tools for macromolecular crystallography in PHENIX.

    Science.gov (United States)

    Echols, Nathaniel; Grosse-Kunstleve, Ralf W; Afonine, Pavel V; Bunkóczi, Gábor; Chen, Vincent B; Headd, Jeffrey J; McCoy, Airlie J; Moriarty, Nigel W; Read, Randy J; Richardson, David C; Richardson, Jane S; Terwilliger, Thomas C; Adams, Paul D

    2012-06-01

    A new Python-based graphical user interface for the PHENIX suite of crystallography software is described. This interface unifies the command-line programs and their graphical displays, simplifying the development of new interfaces and avoiding duplication of function. With careful design, graphical interfaces can be displayed automatically, instead of being manually constructed. The resulting package is easily maintained and extended as new programs are added or modified.

  3. The HEASARC graphical user interface

    Science.gov (United States)

    White, N.; Barrett, P.; Jacobs, P.; Oneel, B.

    1992-01-01

    An OSF/Motif-based graphical user interface has been developed to facilitate the use of the database and data analysis software packages available from the High Energy Astrophysics Science Archive Research Center (HEASARC). It can also be used as an interface to other, similar, routines. A small number of tables are constructed to specify the possible commands and command parameters for a given set of analysis routines. These tables can be modified by a designer to affect the appearance of the interface screens. They can also be dynamically changed in response to parameter adjustments made while the underlying program is running. Additionally, a communication protocol has been designed so that the interface can operate locally or across a network. It is intended that this software be able to run on a variety of workstations and X terminals.

  4. Programming Language Software For Graphics Applications

    Science.gov (United States)

    Beckman, Brian C.

    1993-01-01

    New approach reduces repetitive development of features common to different applications. High-level programming language and interactive environment with access to graphical hardware and software created by adding graphical commands and other constructs to standardized, general-purpose programming language, "Scheme". Designed for use in developing other software incorporating interactive computer-graphics capabilities into application programs. Provides alternative to programming entire applications in C or FORTRAN, specifically ameliorating design and implementation of complex control and data structures typifying applications with interactive graphics. Enables experimental programming and rapid development of prototype software, and yields high-level programs serving as executable versions of software-design documentation.

  5. Geometrical and Graphical Solutions of Quadratic Equations.

    Science.gov (United States)

    Hornsby, E. John, Jr.

    1990-01-01

    Presented are several geometrical and graphical methods of solving quadratic equations. Discussed are Greek origins, Carlyle's method, von Staudt's method, fixed graph methods and imaginary solutions. (CW)

  6. Interactive graphics: exemplified with real data applications.

    Science.gov (United States)

    Malik, Waqas Ahmed; Unlü, Ali

    2011-01-01

    Graphics are widely used in modern applied statistics because they are easy to create, convenient to use, and they can present information effectively. Static plots do not allow interacting with graphics. User interaction, on the other hand, is crucial in exploring data. It gives flexibility and control. One can experiment with the data and the displays. One can investigate the data from different perspectives to produce views that are easily interpretable and informative. In this paper, we try to explain interactive graphics and advocate their use as a practical tool. The benefits and strengths of interactive graphics for data exploration and data quality analyses are illustrated systematically with three complex real datasets.

  7. Effects of and attention to graphic warning labels on cigarette packages.

    Science.gov (United States)

    Süssenbach, Philipp; Niemeier, Sarah; Glock, Sabine

    2013-01-01

    The present study investigates the effects of graphic cigarette warnings compared to text-only cigarette warnings on smokers' explicit (i.e. ratings of the packages, cognitions about smoking, perceived health risk, quit intentions) and implicit attitudes. In addition, participants' visual attention towards the graphic warnings was recorded using eye-tracking methodology. Sixty-three smokers participated in the present study and either viewed graphic cigarette warnings with aversive and non-aversive images or text-only warnings. Data were analysed using analysis of variance and correlation analysis. Especially, graphic cigarette warnings with aversive content drew attention and elicited high threat. However, whereas attention directed to the textual information of the graphic warnings predicted smokers' risk perceptions, attention directed to the images of the graphic warnings did not. Moreover, smokers' in the graphic warning condition reported more positive cognitions about smoking, thus revealing cognitive dissonance. Smokers employ defensive psychological mechanisms when confronted with threatening warnings. Although aversive images attract attention, they do not promote health knowledge. Implications for graphic health warnings and the importance of taking their content (i.e. aversive vs. non-aversive images) into account are discussed.

  8. Experiments and video analysis in classical mechanics

    CERN Document Server

    de Jesus, Vitor L B

    2017-01-01

    This book is an experimental physics textbook on classical mechanics focusing on the development of experimental skills by means of discussion of different aspects of the experimental setup and the assessment of common issues such as accuracy and graphical representation. The most important topics of an experimental physics course on mechanics are covered and the main concepts are explored in detail. Each chapter didactically connects the experiment and the theoretical models available to explain it. Real data from the proposed experiments are presented and a clear discussion over the theoretical models is given. Special attention is also dedicated to the experimental uncertainty of measurements and graphical representation of the results. In many of the experiments, the application of video analysis is proposed and compared with traditional methods.

  9. Acoustic Neuroma Educational Video

    Medline Plus

    Full Text Available ... support group for me? Find a Group Upcoming Events Video Library Photo Gallery One-on-One Support ... group for me? Find a group Back Upcoming events Video Library Photo Gallery One-on-One Support ...

  10. Video Games and Citizenship

    National Research Council Canada - National Science Library

    Bourgonjon, Jeroen; Soetaert, Ronald

    2013-01-01

    ... by exploring a particular aspect of digitization that affects young people, namely video games. They explore the new social spaces which emerge in video game culture and how these spaces relate to community building and citizenship...

  11. Videos, Podcasts and Livechats

    Medline Plus

    Full Text Available ... Doctor Find a Provider Meet the Team Blog Articles News Resources Links Videos Podcasts Webinars For the ... Doctor Find a Provider Meet the Team Blog Articles News Provider Directory Donate Resources Links Videos Podcasts ...

  12. Videos, Podcasts and Livechats

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    Full Text Available ... Doctor Find a Provider Meet the Team Blog Articles & Stories News Resources Links Videos Podcasts Webinars For ... Doctor Find a Provider Meet the Team Blog Articles & Stories News Provider Directory Donate Resources Links Videos ...

  13. Digital Video in Research

    DEFF Research Database (Denmark)

    Frølunde, Lisbeth

    2012-01-01

    questions of our media literacy pertaining to authoring multimodal texts (visual, verbal, audial, etc.) in research practice and the status of multimodal texts in academia. The implications of academic video extend to wider issues of how researchers harness opportunities to author different types of texts......Is video becoming “the new black” in academia, if so, what are the challenges? The integration of video in research methodology (for collection, analysis) is well-known, but the use of “academic video” for dissemination is relatively new (Eriksson and Sørensen). The focus of this paper is academic...... video, or short video essays produced for the explicit purpose of communicating research processes, topics, and research-based knowledge (see the journal of academic videos: www.audiovisualthinking.org). Video is increasingly used in popular showcases for video online, such as YouTube and Vimeo, as well...

  14. Acoustic Neuroma Educational Video

    Medline Plus

    Full Text Available ... Back Support Groups Is a support group for me? Find a Group Upcoming Events Video Library Photo ... Support Groups Back Is a support group for me? Find a group Back Upcoming events Video Library ...

  15. Acoustic Neuroma Educational Video

    Medline Plus

    Full Text Available ... group for me? Find a Group Upcoming Events Video Library Photo Gallery One-on-One Support ANetwork ... for me? Find a group Back Upcoming events Video Library Photo Gallery One-on-One Support Back ...

  16. Videos, Podcasts and Livechats

    Medline Plus

    Full Text Available ... the Team Blog Articles & Stories News Resources Links Videos Podcasts Webinars For the Media For Clinicians For ... Family Caregivers Glossary Menu In this section Links Videos Podcasts Webinars For the Media For Clinicians For ...

  17. Videos, Podcasts and Livechats

    Science.gov (United States)

    ... the Team Blog Articles & Stories News Resources Links Videos Podcasts Webinars For the Media For Clinicians For ... Family Caregivers Glossary Menu In this section Links Videos Podcasts Webinars For the Media For Clinicians For ...

  18. Videos, Podcasts and Livechats

    Medline Plus

    Full Text Available ... a Provider Meet the Team Blog Articles & Stories News Resources Links Videos Podcasts Webinars For the Media ... a Provider Meet the Team Blog Articles & Stories News Provider Directory Donate Resources Links Videos Podcasts Webinars ...

  19. Acoustic Neuroma Educational Video

    Medline Plus

    Full Text Available ... for me? Find a Group Upcoming Events Video Library Photo Gallery One-on-One Support ANetwork Peer ... me? Find a group Back Upcoming events Video Library Photo Gallery One-on-One Support Back ANetwork ...

  20. Video Screen Capture Basics

    Science.gov (United States)

    Dunbar, Laura

    2014-01-01

    This article is an introduction to video screen capture. Basic information of two software programs, QuickTime for Mac and BlueBerry Flashback Express for PC, are also discussed. Practical applications for video screen capture are given.

  1. Videos, Podcasts and Livechats

    Medline Plus

    Full Text Available ... News Resources Links Videos Podcasts Webinars For the Media For Clinicians For Policymakers For Family Caregivers Glossary ... this section Links Videos Podcasts Webinars For the Media For Clinicians For Policymakers For Family Caregivers Glossary ...

  2. Graphic Notation as a Tool in Describing and Analyzing Music Therapy Improvisations

    DEFF Research Database (Denmark)

    Bergstrøm-Nielsen, Carl

    1993-01-01

    Presents graphic notation as the making of aural scores to memorise or analyse improvised music therapy processes, capturing also those aspectsthe usual music notation would not cover. An example in some detail is shown, the music taken from a well known Nordoff/Robbins recording. Training method......, involving graphic brainstorms,using coordinative systems and other frameworks, interpretative method including working on specifically musical counter-transference and special graphic exercises are outlined. Work by students at Aalborg University, Denmark, is quoted. General perspectives including relations...

  3. Transmission of compressed video

    Science.gov (United States)

    Pasch, H. L.

    1990-09-01

    An overview of video coding is presented. The aim is not to give a technical summary of possible coding techniques, but to address subjects related to video compression in general and to the transmission of compressed video in more detail. Bit rate reduction is in general possible by removing redundant information; removing information the eye does not use anyway; and reducing the quality of the video. The codecs which are used for reducing the bit rate, can be divided into two groups: Constant Bit rate Codecs (CBC's), which keep the bit rate constant, but vary the video quality; and Variable Bit rate Codecs (VBC's), which keep the video quality constant by varying the bit rate. VBC's can be in general reach a higher video quality than CBC's using less bandwidth, but need a transmission system that allows the bandwidth of a connection to fluctuate in time. The current and the next generation of the PSTN does not allow this; ATM might. There are several factors which influence the quality of video: the bit error rate of the transmission channel, slip rate, packet loss rate/packet insertion rate, end-to-end delay, phase shift between voice and video, and bit rate. Based on the bit rate of the coded video, the following classification of coded video can be made: High Definition Television (HDTV); Broadcast Quality Television (BQTV); video conferencing; and video telephony. The properties of these classes are given. The video conferencing and video telephony equipment available now and in the next few years can be divided into three categories: conforming to 1984 CCITT standard for video conferencing; conforming to 1988 CCITT standard; and conforming to no standard.

  4. Making good physics videos

    Science.gov (United States)

    Lincoln, James

    2017-05-01

    Online videos are an increasingly important way technology is contributing to the improvement of physics teaching. Students and teachers have begun to rely on online videos to provide them with content knowledge and instructional strategies. Online audiences are expecting greater production value, and departments are sometimes requesting educators to post video pre-labs or to flip our classrooms. In this article, I share my advice on creating engaging physics videos.

  5. Desktop video conferencing

    OpenAIRE

    Potter, Ray; Roberts, Deborah

    2007-01-01

    This guide aims to provide an introduction to Desktop Video Conferencing. You may be familiar with video conferencing, where participants typically book a designated conference room and communicate with another group in a similar room on another site via a large screen display. Desktop video conferencing (DVC), as the name suggests, allows users to video conference from the comfort of their own office, workplace or home via a desktop/laptop Personal Computer. DVC provides live audio and visua...

  6. CTG Analyzer: A graphical user interface for cardiotocography.

    Science.gov (United States)

    Sbrollini, Agnese; Agostinelli, Angela; Burattini, Luca; Morettini, Micaela; Di Nardo, Francesco; Fioretti, Sandro; Burattini, Laura

    2017-07-01

    Cardiotocography (CTG) is the most commonly used test for establishing the good health of the fetus during pregnancy and labor. CTG consists in the recording of fetal heart rate (FHR; bpm) and maternal uterine contractions (UC; mmHg). FHR is characterized by baseline, baseline variability, tachycardia, bradycardia, acceleration and decelerations. Instead, UC signal is characterized by presence of contractions and contractions period. Such parameters are usually evaluated by visual inspection. However, visual analysis of CTG recordings has a well-demonstrated poor reproducibility, due to the complexity of physiological phenomena affecting fetal heart rhythm and being related to clinician's experience. Computerized tools in support of clinicians represents a possible solution for improving correctness in CTG interpretation. This paper proposes CTG Analyzer as a graphical tool for automatic and objective analysis of CTG tracings. CTG Analyzer was developed under MATLAB®; it is a very intuitive and user friendly graphical user interface. FHR time series and UC signal are represented one under the other, on a grid with reference lines, as usually done for CTG reports printed on paper. Colors help identification of FHR and UC features. Automatic analysis is based on some unchangeable features definitions provided by the FIGO guidelines, and other arbitrary settings whose default values can be changed by the user. Eventually, CTG Analyzer provides a report file listing all the quantitative results of the analysis. Thus, CTG Analyzer represents a potentially useful graphical tool for automatic and objective analysis of CTG tracings.

  7. 47 CFR 79.3 - Video description of video programming.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Video description of video programming. 79.3... CLOSED CAPTIONING AND VIDEO DESCRIPTION OF VIDEO PROGRAMMING § 79.3 Video description of video programming. (a) Definitions. For purposes of this section the following definitions shall apply: (1...

  8. Efficient utilization of graphics technology for space animation

    Science.gov (United States)

    Panos, Gregory Peter

    1989-01-01

    Efficient utilization of computer graphics technology has become a major investment in the work of aerospace engineers and mission designers. These new tools are having a significant impact in the development and analysis of complex tasks and procedures which must be prepared prior to actual space flight. Design and implementation of useful methods in applying these tools has evolved into a complex interaction of hardware, software, network, video and various user interfaces. Because few people can understand every aspect of this broad mix of technology, many specialists are required to build, train, maintain and adapt these tools to changing user needs. Researchers have set out to create systems where an engineering designer can easily work to achieve goals with a minimum of technological distraction. This was accomplished with high-performance flight simulation visual systems and supercomputer computational horsepower. Control throughout the creative process is judiciously applied while maintaining generality and ease of use to accommodate a wide variety of engineering needs.

  9. Graphic design as urban design: towards a theory for analysing graphic objects in urban environments.

    OpenAIRE

    Harland, Robert George

    2011-01-01

    This thesis presents a model for analysing the graphic object as urban object, by considering atypical fields of discourse that contribute to the formation of the object domain. The question: what is graphic design as urban design? directs the research through an epistemological design study comprising: an interrogation of graphic design studio practice and the articulation of graphic design research questions; a review and subsequent development of research strategy, design and method toward...

  10. Do-It-Yourself Whiteboard-Style Physics Video Lectures

    Science.gov (United States)

    Douglas, Scott Samuel; Aiken, John Mark; Greco, Edwin; Schatz, Michael; Lin, Shih-Yin

    2017-01-01

    Video lectures are increasingly being used in physics instruction. For example, video lectures can be used to "flip" the classroom, i.e., to deliver, via the Internet, content that is traditionally transmitted by in-class lectures (e.g., presenting concepts, working examples, etc.), thereby freeing up classroom time for more interactive instruction. To date, most video lectures are live lecture recordings or screencasts. The hand-animated "whiteboard" video is an alternative to these more common styles and affords unique creative opportunities such as stop-motion animation or visual "demonstrations" of phenomena that would be difficult to demo in a classroom. In the spring of 2013, a series of whiteboard-style videos were produced to provide video lecture content for Georgia Tech introductory physics instruction, including flipped courses and a MOOC. This set of videos (which also includes screencasts and live recordings) can be found on the "Your World is Your Lab" YouTube channel. In this article, we describe this method of video production, which is suitable for an instructor working solo or in collaboration with students; we explore students' engagement with these videos in a separate work. A prominent example of whiteboard animation is the "Minute Physics" video series by Henry Reich, whose considerable popularity and accessible, cartoony style were the original inspiration for our own video lectures.

  11. Video Self-Modeling

    Science.gov (United States)

    Buggey, Tom; Ogle, Lindsey

    2012-01-01

    Video self-modeling (VSM) first appeared on the psychology and education stage in the early 1970s. The practical applications of VSM were limited by lack of access to tools for editing video, which is necessary for almost all self-modeling videos. Thus, VSM remained in the research domain until the advent of camcorders and VCR/DVD players and,…

  12. Tracing Sequential Video Production

    DEFF Research Database (Denmark)

    Otrel-Cass, Kathrin; Khalid, Md. Saifuddin

    2015-01-01

    With an interest in learning that is set in collaborative situations, the data session presents excerpts from video data produced by two of fifteen students from a class of 5th semester techno-anthropology course. Students used video cameras to capture the time they spent working with a scientist...... video, nature of the interactional space, and material and spatial semiotics....

  13. Developing a Promotional Video

    Science.gov (United States)

    Epley, Hannah K.

    2014-01-01

    There is a need for Extension professionals to show clientele the benefits of their program. This article shares how promotional videos are one way of reaching audiences online. An example is given on how a promotional video has been used and developed using iMovie software. Tips are offered for how professionals can create a promotional video and…

  14. Structure Analysis of the Graphic Simulator for the PRIDE Equipment

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Chang Hoi; Kim, Seong Hyun; Park, Byung Suk; Lee, Jong Kwang; Lee, Hyo Jik; Kim, Ki Ho [KAERI, Daejeon (Korea, Republic of)

    2010-12-15

    Simulation technology based on the computer graphics is able to minimize the trial and error and reduce the development cost and period dramatically at the design stage of the pyroprocessing facility construction and the equipment development. For this purpose, the 3D graphic simulation program named HotCell has been developed. HotCell has continuously updated for the functional addition and the bug fix, and now it reaches version third. The Digital mockup of PRIDE is furnished with the MSM(matster-slave manipulator), BDSM(bridge transported dual arm servo manipulator) and Crane in order to remote handling the processing equipment. HotCell program can be interface with the 3D mouse, the haptic device and the joystick for the realistic operation of above device. The posture of MSM can be recorded with the simple keyboard operation in order to reproduce the behavior of the MSM

  15. A Graphical Approach to Quantitative Structural Geology.

    Science.gov (United States)

    De Paor, Declan G.

    1986-01-01

    Describes how computer graphic methods can be used in teaching structural geology. Describes the design of a graphics workstation for the Apple microcomputer. Includes a listing of commands used with software to plot structures in a digitized form. Argues for the establishment of computer laboratories for structural geology classes. (TW)

  16. Graphic Design in Libraries: A Conceptual Process

    Science.gov (United States)

    Ruiz, Miguel

    2014-01-01

    Providing successful library services requires efficient and effective communication with users; therefore, it is important that content creators who develop visual materials understand key components of design and, specifically, develop a holistic graphic design process. Graphic design, as a form of visual communication, is the process of…

  17. Interactive graphical computer-aided design system

    Science.gov (United States)

    Edge, T. M.

    1975-01-01

    System is used for design, layout, and modification of large-scale-integrated (LSI) metal-oxide semiconductor (MOS) arrays. System is structured around small computer which provides real-time support for graphics storage display unit with keyboard, slave display unit, hard copy unit, and graphics tablet for designer/computer interface.

  18. Deconstruction and Graphic Design: History Meets Theory.

    Science.gov (United States)

    Lupton, Ellen; Miller, J. Abbott

    1994-01-01

    Considers the reception and use of deconstruction in the recent history of graphic design. Considers the place of graphics within the theory of deconstruction in the work of philosopher Jacques Derrida. Argues that deconstruction is not a style but a mode of questioning through and about the technologies, formal devices, social institutions and…

  19. Using Graphic Organizers in Intercultural Education

    Science.gov (United States)

    Ciascai, Liliana

    2009-01-01

    Graphic organizers are instruments of representation, illustration and modeling of information. In the educational practice they are used for building, and systematization of knowledge. Graphic organizers are instruments that addressed mostly visual learning style, but their use is beneficial to all learners. In this paper we illustrate the use of…

  20. Revitalizing Tier 2 Intervention with Graphic Novels

    Science.gov (United States)

    Smetana, Linda; Grisham, Dana L.

    2012-01-01

    The authors explore the practice of incorporating graphic novels in a Tier 2 Response To Intervention (RTI) program for five elementary-aged struggling readers in an urban school. Using a formative experiment framework, the study found that graphic novels provided a vehicle for the application of word recognition and fluency strategies learned in…

  1. Standards of Multimedia Graphic Design in Education

    Science.gov (United States)

    Aldalalah, Osamah Ahmad; Ababneh, Ziad Waleed Mohamed

    2015-01-01

    This study aims to determine Standards of Multimedia Graphic Design in Education through the analysis of the theoretical basis and previous studies related to this subject. This study has identified the list of standards of Multimedia, Graphic Design, each of which has a set indicator through which the quality of Multimedia can be evaluated in…

  2. 7 CRITERIA FOR INTEGER SEQUENCES BEING GRAPHIC

    NARCIS (Netherlands)

    SIERKSMA, G

    Seven criteria for integer sequences being graphic are listed. Being graphic means that there is a simple graph with the given integer sequence as degree sequence. One of the criteria leads to a new and constructive proof of the well-known criterion of Erdos-Gallai.

  3. Mastering probabilistic graphical models using Python

    CERN Document Server

    Ankan, Ankur

    2015-01-01

    If you are a researcher or a machine learning enthusiast, or are working in the data science field and have a basic idea of Bayesian learning or probabilistic graphical models, this book will help you to understand the details of graphical models and use them in your data science problems.

  4. Q-Technique and Graphics Research.

    Science.gov (United States)

    Kahle, Roger R.

    Because Q-technique is as appropriate for use with visual and design items as for use with words, it is not stymied by the topics one is likely to encounter in graphics research. In particular Q-technique is suitable for studying the so-called "congeniality" of typography, for various copytesting usages, and for multivariate graphics research. The…

  5. Teaching Media Literacy with Graphic Novels

    Science.gov (United States)

    Monnin, Katie

    2010-01-01

    Background: A current problem in media literacy studies is whether or not to categorize graphic novels as media literacy texts. Thus, this article begins with a review of current media literacy research and its emphasis on defining media literacy texts as texts that rely on both print literacies and image literacies. Because graphic novels rely on…

  6. A study of perceptions of graphical passwords

    CSIR Research Space (South Africa)

    Vorster, JS

    2015-10-01

    Full Text Available of Perceptions of Graphical Passwords JS Vorster, RP van Heerden Abstract: Depending on the graphical password schema, the key-space can be even bigger than alpha-numeric passwords. However, in conventional passwords, users will re- use letters within a...

  7. Spatial Ability through Engineering Graphics Education

    Science.gov (United States)

    Marunic, Gordana; Glazar, Vladimir

    2013-01-01

    Spatial ability has been confirmed to be of particular importance for successful engineering graphics education and to be a component of human intelligence that can be improved through instruction and training. Consequently, the creation and communication by means of graphics demand careful development of spatial skills provided by the balanced…

  8. ABOUT THE ROMANIAN SOCIETY FOR ENGINEERING GRAPHICS

    Directory of Open Access Journals (Sweden)

    SIMION Ionel

    2015-06-01

    Full Text Available SORGING is a non-profit, non-governmental society, opened to all professionals interested in Engineering Graphics and Design. It aims to promote the research, development and innovation activities, together with the dissemination of best practices and assistance for educational purposes. In this paper the research and educational activities of the Romanian Society for Engineering Graphics will be briefly reviewed.

  9. Exploring Literary Devices in Graphic Novels

    Science.gov (United States)

    Dallacqua, Ashley K.

    2012-01-01

    This article explores the possibilities of graphic novels with young readers. During the 2009-2010 school year, while working with four fifth-grade students, the author examined the question "In what ways do readers engage while reading a graphic novel?" The fifth graders took part in book discussions and one-on-one interviews after reading two…

  10. Introduction to Graphics Programming in Java

    DEFF Research Database (Denmark)

    Rosendahl, Mads

    Writing graphics applications in Java using Swing can be quite a daunting experience which requires understanding of some large libraries, and fairly advanced aspects of Java. In these notes we will show that by using a small subset of the Swing package we can write a write range of graphics...

  11. Video integrated measurement system. [Diagnostic display devices

    Energy Technology Data Exchange (ETDEWEB)

    Spector, B.; Eilbert, L.; Finando, S.; Fukuda, F.

    1982-06-01

    A Video Integrated Measurement (VIM) System is described which incorporates the use of various noninvasive diagnostic procedures (moire contourography, electromyography, posturometry, infrared thermography, etc.), used individually or in combination, for the evaluation of neuromusculoskeletal and other disorders and their management with biofeedback and other therapeutic procedures. The system provides for measuring individual diagnostic and therapeutic modes, or multiple modes by split screen superimposition, of real time (actual) images of the patient and idealized (ideal-normal) models on a video monitor, along with analog and digital data, graphics, color, and other transduced symbolic information. It is concluded that this system provides an innovative and efficient method by which the therapist and patient can interact in biofeedback training/learning processes and holds considerable promise for more effective measurement and treatment of a wide variety of physical and behavioral disorders.

  12. Managed Video as a Service for a Video Surveillance Model

    Directory of Open Access Journals (Sweden)

    Dan Benta

    2009-01-01

    Full Text Available The increasing demand for security systems hasresulted in rapid development of video surveillance and videosurveillance has turned into a major area of interest andmanagement challenge. Personal experience in specializedcompanies helped me to adapt demands of users of videosecurity systems to system performance. It is known thatpeople wish to obtain maximum profit with minimum effort,but security is not neglected. Surveillance systems and videomonitoring should provide only necessary information and torecord only when there is activity. Via IP video surveillanceservices provides more safety in this sector, being able torecord information on servers located in other locations thanthe IP cameras. Also, these systems allow real timemonitoring of goods or activities that take place in supervisedperimeters. View live and recording can be done via theInternet from any computer, using a web browser. Access tothe surveillance system is granted after a user and passwordauthentication.

  13. Exploiting graphics processing units for computational biology and bioinformatics.

    Science.gov (United States)

    Payne, Joshua L; Sinnott-Armstrong, Nicholas A; Moore, Jason H

    2010-09-01

    Advances in the video gaming industry have led to the production of low-cost, high-performance graphics processing units (GPUs) that possess more memory bandwidth and computational capability than central processing units (CPUs), the standard workhorses of scientific computing. With the recent release of generalpurpose GPUs and NVIDIA's GPU programming language, CUDA, graphics engines are being adopted widely in scientific computing applications, particularly in the fields of computational biology and bioinformatics. The goal of this article is to concisely present an introduction to GPU hardware and programming, aimed at the computational biologist or bioinformaticist. To this end, we discuss the primary differences between GPU and CPU architecture, introduce the basics of the CUDA programming language, and discuss important CUDA programming practices, such as the proper use of coalesced reads, data types, and memory hierarchies. We highlight each of these topics in the context of computing the all-pairs distance between instances in a dataset, a common procedure in numerous disciplines of scientific computing. We conclude with a runtime analysis of the GPU and CPU implementations of the all-pairs distance calculation. We show our final GPU implementation to outperform the CPU implementation by a factor of 1700.

  14. Exploiting Graphics Processing Units for Computational Biology and Bioinformatics

    Science.gov (United States)

    Payne, Joshua L.; Sinnott-Armstrong, Nicholas A.; Moore, Jason H.

    2010-01-01

    Advances in the video gaming industry have led to the production of low-cost, high-performance graphics processing units (GPUs) that possess more memory bandwidth and computational capability than central processing units (CPUs), the standard workhorses of scientific computing. With the recent release of general-purpose GPUs and Nvidia's GPU programming language, CUDA, graphics engines are being adopted widely in scientific computing applications, particularly in the fields of computational biology and bioinformatics. The goal of this article is to concisely present an introduction to GPU hardware and programming, aimed at the computational biologist or bioinformaticist. To this end, we discuss the primary differences between GPU and CPU architecture, introduce the basics of the CUDA programming language, and discuss important CUDA programming practices, such as the proper use of coalesced reads, data types, and memory hierarchies. We highlight each of these topics in the context of computing the all-pairs distance between instances in a dataset, a common procedure in numerous disciplines of scientific computing. We conclude with a runtime analysis of the GPU and CPU implementations of the all-pairs distance calculation. We show our final GPU implementation to outperform the CPU implementation by a factor of 1700. PMID:20658333

  15. Advanced video coding systems

    CERN Document Server

    Gao, Wen

    2015-01-01

    This comprehensive and accessible text/reference presents an overview of the state of the art in video coding technology. Specifically, the book introduces the tools of the AVS2 standard, describing how AVS2 can help to achieve a significant improvement in coding efficiency for future video networks and applications by incorporating smarter coding tools such as scene video coding. Topics and features: introduces the basic concepts in video coding, and presents a short history of video coding technology and standards; reviews the coding framework, main coding tools, and syntax structure of AV

  16. Intelligent video surveillance systems

    CERN Document Server

    Dufour, Jean-Yves

    2012-01-01

    Belonging to the wider academic field of computer vision, video analytics has aroused a phenomenal surge of interest since the current millennium. Video analytics is intended to solve the problem of the incapability of exploiting video streams in real time for the purpose of detection or anticipation. It involves analyzing the videos using algorithms that detect and track objects of interest over time and that indicate the presence of events or suspect behavior involving these objects.The aims of this book are to highlight the operational attempts of video analytics, to identify possi

  17. VBR video traffic models

    CERN Document Server

    Tanwir, Savera

    2014-01-01

    There has been a phenomenal growth in video applications over the past few years. An accurate traffic model of Variable Bit Rate (VBR) video is necessary for performance evaluation of a network design and for generating synthetic traffic that can be used for benchmarking a network. A large number of models for VBR video traffic have been proposed in the literature for different types of video in the past 20 years. Here, the authors have classified and surveyed these models and have also evaluated the models for H.264 AVC and MVC encoded video and discussed their findings.

  18. Fast analytical scatter estimation using graphics processing units.

    Science.gov (United States)

    Ingleby, Harry; Lippuner, Jonas; Rickey, Daniel W; Li, Yue; Elbakri, Idris

    2015-01-01

    To develop a fast patient-specific analytical estimator of first-order Compton and Rayleigh scatter in cone-beam computed tomography, implemented using graphics processing units. The authors developed an analytical estimator for first-order Compton and Rayleigh scatter in a cone-beam computed tomography geometry. The estimator was coded using NVIDIA's CUDA environment for execution on an NVIDIA graphics processing unit. Performance of the analytical estimator was validated by comparison with high-count Monte Carlo simulations for two different numerical phantoms. Monoenergetic analytical simulations were compared with monoenergetic and polyenergetic Monte Carlo simulations. Analytical and Monte Carlo scatter estimates were compared both qualitatively, from visual inspection of images and profiles, and quantitatively, using a scaled root-mean-square difference metric. Reconstruction of simulated cone-beam projection data of an anthropomorphic breast phantom illustrated the potential of this method as a component of a scatter correction algorithm. The monoenergetic analytical and Monte Carlo scatter estimates showed very good agreement. The monoenergetic analytical estimates showed good agreement for Compton single scatter and reasonable agreement for Rayleigh single scatter when compared with polyenergetic Monte Carlo estimates. For a voxelized phantom with dimensions 128 × 128 × 128 voxels and a detector with 256 × 256 pixels, the analytical estimator required 669 seconds for a single projection, using a single NVIDIA 9800 GX2 video card. Accounting for first order scatter in cone-beam image reconstruction improves the contrast to noise ratio of the reconstructed images. The analytical scatter estimator, implemented using graphics processing units, provides rapid and accurate estimates of single scatter and with further acceleration and a method to account for multiple scatter may be useful for practical scatter correction schemes.

  19. Flip Video for Dummies

    CERN Document Server

    Hutsko, Joe

    2010-01-01

    The full-color guide to shooting great video with the Flip Video camera. The inexpensive Flip Video camera is currently one of the hottest must-have gadgets. It's portable and connects easily to any computer to transfer video you shoot onto your PC or Mac. Although the Flip Video camera comes with a quick-start guide, it lacks a how-to manual, and this full-color book fills that void! Packed with full-color screen shots throughout, Flip Video For Dummies shows you how to shoot the best possible footage in a variety of situations. You'll learn how to transfer video to your computer and then edi

  20. Perceptual hashing of sheet music based on graphical representation

    Science.gov (United States)

    Kremser, Gert; Schmucker, Martin

    2006-02-01

    For the protection of Intellectual Property Rights (IPR), different passive protection methods have been developed. These watermarking and fingerprinting technologies protect content beyond access control and thus tracing illegal distributions as well as the identification of people who are responsible for a illegal distribution is possible. The public's attention was attracted especially to the second application by the illegal distribution of the so called 'Hollywood screeners'. The focus of current research is on audio and video content and images. These are the common content types we are faced with every day, and which mostly have a huge commercial value. Especially the illegal distribution of content that has not been officially published shows the potential commercial impact of illegal distributions. Content types, however, are not limited to audio, video and images. There is a range of other content types, which also deserve the development of passive protection technologies. For sheet music for instance, different watermarking technologies have been developed, which up to this point only function within certain limitations. This is the reason why we wanted to find out how to develop a fingerprinting or perceptual hashing method for sheet music. In this article, we describe the development of our algorithm for sheet music, which is based on simple graphical features. We describe the selection of these features and the subsequent processing steps. The resulting compact representation is analyzed and the first performance results are reported.

  1. The effectiveness of video-based training of an electronic medical record system: An exploratory study on computer literate health workers in rural Uganda : Ändamålsenligheten hos videobaserad undervisning av ett elektroniskt patientjournalsystem: en explorativ studie av datorvana sjukvårdsarbetare på Ugandas landsbygd

    OpenAIRE

    Hammarbäck, Axel

    2015-01-01

    Aims The purpose of this study is to explore the possibilities for video-based learning of computer systems in the field of medical education in rural sub-Saharan Africa. Background Low-income countries are forced to perform healthcare services with resources already spread too thin. The use of electronic medical records can increase the cost-effectiveness of delivering healthcare services, but the low computer literacy in sub-Saharan Africa is an obstacle necessary to overcome. E-learning an...

  2. Graphic gambling warnings: how they affect emotions, cognitive responses and attitude change.

    Science.gov (United States)

    Muñoz, Yaromir; Chebat, Jean-Charles; Borges, Adilson

    2013-09-01

    The present study focuses on the effects of graphic warnings related to excessive gambling. It is based upon a theoretical model derived from both the Protection Motivation Theory (PMT) and the Elaboration Likelihood Model (ELM). We focus on video lottery terminal (VLT), one of the most hazardous format in the gaming industry. Our cohort consisted of 103 actual gamblers who reported previous gambling activity on VLT's on a regular basis. We assess the effectiveness of graphic warnings vs. text-only warnings and the effectiveness of two major arguments (i.e., family vs. financial disruption). A 2 × 2 factorial design was used to test the direct and combined effects of two variables (i.e., warning content and presence vs. absence of a graphic). It was found that the presence of a graphic enhances both cognitive appraisal and fear, and has positive effects on the Depth of Information Processing. In addition, graphic content combined with family disruptions is more effective for changing attitudes and complying with the warning than other combinations of the manipulated variables. It is proposed that ELM and PMT complement each other to explain the effects of warnings. Theoretical and practical implications are discussed.

  3. Three-dimensional video presentation of microsurgery by the cross-eyed viewing method using a high-definition video system.

    Science.gov (United States)

    Terakawa, Yuzo; Ishibashi, Kenichi; Goto, Takeo; Ohata, Kenji

    2011-01-01

    Three-dimensional (3-D) video recording of microsurgery is a more promising tool for presentation and education of microsurgery than conventional two-dimensional video systems, but has not been widely adopted partly because 3-D image processing of previous 3-D video systems is complicated and observers without optical devices cannot visualize the 3-D image. A new technical development for 3-D video presentation of microsurgery is described. Microsurgery is recorded with a microscope equipped with a single high-definition (HD) video camera. This 3-D video system records the right- and left-eye views of the microscope simultaneously as single HD data with the use of a 3-D camera adapter: the right- and left-eye views of the microscope are displayed separately on the right and left sides, respectively. The operation video is then edited with video editing software so that the right-eye view is displayed on the left side and left-eye view is displayed on the right side. Consequently, a 3-D video of microsurgery can be created by viewing the edited video by the cross-eyed stereogram viewing method without optical devices. The 3-D microsurgical video provides a more accurate view, especially with regard to depth, and a better understanding of microsurgical anatomy. Although several issues are yet to be addressed, this 3-D video system is a useful method of recording and presenting microsurgery for 3-D viewing with currently available equipment, without optical devices.

  4. Video tonal stabilization via color states smoothing.

    Science.gov (United States)

    Wang, Yinting; Tao, Dacheng; Li, Xiang; Song, Mingli; Bu, Jiajun; Tan, Ping

    2014-11-01

    We address the problem of removing video color tone jitter that is common in amateur videos recorded with hand-held devices. To achieve this, we introduce color state to represent the exposure and white balance state of a frame. The color state of each frame can be computed by accumulating the color transformations of neighboring frame pairs. Then, the tonal changes of the video can be represented by a time-varying trajectory in color state space. To remove the tone jitter, we smooth the original color state trajectory by solving an L1 optimization problem with PCA dimensionality reduction. In addition, we propose a novel selective strategy to remove small tone jitter while retaining extreme exposure and white balance changes to avoid serious artifacts. Quantitative evaluation and visual comparison with previous work demonstrate the effectiveness of our tonal stabilization method. This system can also be used as a preprocessing tool for other video editing methods.

  5. 77 FR 8287 - Quad/Graphics, a Subdivision of Quad Graphics, Inc., Including On-Site Leased Workers From SPS...

    Science.gov (United States)

    2012-02-14

    ... Employment and Training Administration Quad/Graphics, a Subdivision of Quad Graphics, Inc., Including On-Site... filed on March 15, 2011, on behalf of workers of Quad/Graphics, a Subdivision of Quad Graphics, Inc... (TA-W-73,441G) applicable to workers and former workers of Quad Graphics, Inc., a wholly-owned...

  6. An Imaging And Graphics Workstation For Image Sequence Analysis

    Science.gov (United States)

    Mostafavi, Hassan

    1990-01-01

    This paper describes an application-specific engineering workstation designed and developed to analyze imagery sequences from a variety of sources. The system combines the software and hardware environment of the modern graphic-oriented workstations with the digital image acquisition, processing and display techniques. The objective is to achieve automation and high throughput for many data reduction tasks involving metric studies of image sequences. The applications of such an automated data reduction tool include analysis of the trajectory and attitude of aircraft, missile, stores and other flying objects in various flight regimes including launch and separation as well as regular flight maneuvers. The workstation can also be used in an on-line or off-line mode to study three-dimensional motion of aircraft models in simulated flight conditions such as wind tunnels. The system's key features are: 1) Acquisition and storage of image sequences by digitizing real-time video or frames from a film strip; 2) computer-controlled movie loop playback, slow motion and freeze frame display combined with digital image sharpening, noise reduction, contrast enhancement and interactive image magnification; 3) multiple leading edge tracking in addition to object centroids at up to 60 fields per second from both live input video or a stored image sequence; 4) automatic and manual field-of-view and spatial calibration; 5) image sequence data base generation and management, including the measurement data products; 6) off-line analysis software for trajectory plotting and statistical analysis; 7) model-based estimation and tracking of object attitude angles; and 8) interface to a variety of video players and film transport sub-systems.

  7. Practical system for generating digital mixed reality video holograms.

    Science.gov (United States)

    Song, Joongseok; Kim, Changseob; Park, Hanhoon; Park, Jong-Il

    2016-07-10

    We propose a practical system that can effectively mix the depth data of real and virtual objects by using a Z buffer and can quickly generate digital mixed reality video holograms by using multiple graphic processing units (GPUs). In an experiment, we verify that real objects and virtual objects can be merged naturally in free viewing angles, and the occlusion problem is well handled. Furthermore, we demonstrate that the proposed system can generate mixed reality video holograms at 7.6 frames per second. Finally, the system performance is objectively verified by users' subjective evaluations.

  8. Practical Implementation of a Graphics Turing Test

    DEFF Research Database (Denmark)

    Borg, Mathias; Johansen, Stine Schmieg; Thomsen, Dennis Lundgaard

    2012-01-01

    We present a practical implementation of a variation of the Turing Test for realistic computer graphics. The test determines whether virtual representations of objects appear as real as genuine objects. Two experiments were conducted wherein a real object and a similar virtual object is presented...... graphics. Based on the results from these experiments, future versions of the Graphics Turing Test could ease the restrictions currently necessary in order to test object telepresence under more general conditions. Furthermore, the test could be used to determine the minimum requirements to achieve object...

  9. Graphic Design for the Real World?

    DEFF Research Database (Denmark)

    Elisabeth Bichler, Katrine; Beier, Sofie

    2016-01-01

    This article examines graphic design’s role within design activism. It outlines design activism in general and its relation to commercial design culture in a consumerist economy. Thereafter it discusses persuasive tendencies in graphic design and questions if its current contribution to design...... activism is limited to its predominant narrow role of persuading for “the good cause.” To illustrate the hypothesis that such a persuasive approach lacks activist potential and thus social impact, cases that represent traditional graphic-design activism are compared to alternative approaches...

  10. Roles of Graphic Pathographies in Clinical Training.

    Science.gov (United States)

    Yu, Megan

    2018-02-01

    Although graphic pathographies have recently been recognized as playing an important role in medical care, they have not been formally incorporated in many medical school curricula. In this paper, I discuss current applications of graphic pathographies in medicine as well as some potential ethical and epistemological challenges that can arise when using these narratives. Health professionals and medical educators should understand when, why, and how to use graphic pathographies with the goal of enhancing medical education and patient care. © 2018 American Medical Association. All Rights Reserved.

  11. Learning the Structure of Mixed Graphical Models.

    Science.gov (United States)

    Lee, Jason D; Hastie, Trevor J

    2015-01-01

    We consider the problem of learning the structure of a pairwise graphical model over continuous and discrete variables. We present a new pairwise model for graphical models with both continuous and discrete variables that is amenable to structure learning. In previous work, authors have considered structure learning of Gaussian graphical models and structure learning of discrete models. Our approach is a natural generalization of these two lines of work to the mixed case. The penalization scheme involves a novel symmetric use of the group-lasso norm and follows naturally from a particular parametrization of the model. Supplementary materials for this paper are available online.

  12. Acquisition of graphic communication by a young girl without comprehension of spoken language.

    Science.gov (United States)

    von Tetzchner, S; Øvreeide, K D; Jørgensen, K K; Ormhaug, B M; Oxholm, B; Warme, R

    To describe a graphic-mode communication intervention involving a girl with intellectual impairment and autism who did not develop comprehension of spoken language. The aim was to teach graphic-mode vocabulary that reflected her interests, preferences, and the activities and routines of her daily life, by providing sufficient cues to the meanings of the graphic representations so that she would not need to comprehend spoken instructions. An individual case study design was selected, including the use of written records, participant observation, and registration of the girl's graphic vocabulary and use of graphic signs and other communicative expressions. While the girl's comprehension (and hence use) of spoken language remained lacking over a 3-year period, she acquired an active use of over 80 photographs and pictograms. The girl was able to cope better with the cognitive and attentional requirements of graphic communication than those of spoken language and manual signs, which had been focused in earlier interventions. Her achievements demonstrate that it is possible for communication-impaired children to learn to use an augmentative and alternative communication system without speech comprehension, provided the intervention utilizes functional strategies and non-language cues to the meaning of the graphic representations that are taught.

  13. Utilization of near-source video and ground motion in the assessment of seismic source functions from mining explosions

    Energy Technology Data Exchange (ETDEWEB)

    Stump, B.W. [Los Alamos National Lab., NM (United States); Anderson, D.P. [Southern Methodist Univ., Dallas, TX (United States). Dept. of Geological Sciences

    1995-04-01

    Constraint of the operative physical processes in the source region of mining explosions and the linkage to the generation of seismic waveforms provides the opportunity for controlling ground motion. Development of these physical models can also be used in conjunction with the ground motion data as diagnostics of blasting efficiency. In order to properly address the multi-dimensional aspect of data sets designed to constrain these sources, we are investigating a number of modem visualization tools that have only recently become available with new, high-speed graphical computers that can utilize relatively large data sets. The data sets that are combined in the study of mining explosion sources include near-source ground motion acceleration and velocity records, velocity of detonation measurements in each explosive hole, high speed film, video and shot design information.

  14. Graphic facilitation as a novel approach to practice development.

    Science.gov (United States)

    Leonard, Angela; Bonaconsa, Candice; Ssenyonga, Lydia; Coetzee, Minette

    2017-10-10

    The active participation of staff from the outset of any health service or practice improvement process ensures they are more likely to become engaged in the implementation phases that follow initial service analyses. Graphic facilitation is a way of getting participants to develop an understanding of complex systems and articulate solutions from within them. This article describes how a graphic facilitation process enabled the members of a multidisciplinary team at a specialist paediatric neurosurgery hospital in Uganda to understand how their system worked. The large graphic representation the team created helped each team member to visualise their day-to-day practice, understand each person's contribution, celebrate their triumphs and highlight opportunities for service improvement. The process highlighted three features of their practice: an authentic interdisciplinary team approach to care, admission of the primary carer with the child, and previously unrecognised delays in patient flow through the outpatients department. The team's active participation and ownership of the process resulted in sustainable improvements to clinical practice. ©2012 RCN Publishing Company Ltd. All rights reserved. Not to be copied, transmitted or recorded in any way, in whole or part, without prior permission of the publishers.

  15. Using video-based observation research methods in primary care health encounters to evaluate complex interactions

    Directory of Open Access Journals (Sweden)

    Onur Asan

    2014-08-01

    Full Text Available Objective The purpose of this paper is to describe the use of video-based observation research methods in primary care environment and highlight important methodological considerations and provide practical guidance for primary care and human factors researchers conducting video studies to understand patient–clinician interaction in primary care settings.Methods We reviewed studies in the literature which used video methods in health care research, and we also used our own experience based on the video studies we conducted in primary care settings.Results This paper highlighted the benefits of using video techniques, such as multi-channel recording and video coding, and compared “unmanned” video recording with the traditional observation method in primary care research. We proposed a list that can be followed step by step to conduct an effective video study in a primary care setting for a given problem. This paper also described obstacles, researchers should anticipate when using video recording methods in future studies.Conclusion With the new technological improvements, video-based observation research is becoming a promising method in primary care and HFE research. Video recording has been under-utilised as a data collection tool because of confidentiality and privacy issues. However, it has many benefits as opposed to traditional observations, and recent studies using video recording methods have introduced new research areas and approaches.

  16. Using video-based observation research methods in primary care health encounters to evaluate complex interactions.

    Science.gov (United States)

    Asan, Onur; Montague, Enid

    2014-01-01

    The purpose of this paper is to describe the use of video-based observation research methods in primary care environment and highlight important methodological considerations and provide practical guidance for primary care and human factors researchers conducting video studies to understand patient-clinician interaction in primary care settings. We reviewed studies in the literature which used video methods in health care research, and we also used our own experience based on the video studies we conducted in primary care settings. This paper highlighted the benefits of using video techniques, such as multi-channel recording and video coding, and compared "unmanned" video recording with the traditional observation method in primary care research. We proposed a list that can be followed step by step to conduct an effective video study in a primary care setting for a given problem. This paper also described obstacles, researchers should anticipate when using video recording methods in future studies. With the new technological improvements, video-based observation research is becoming a promising method in primary care and HFE research. Video recording has been under-utilised as a data collection tool because of confidentiality and privacy issues. However, it has many benefits as opposed to traditional observations, and recent studies using video recording methods have introduced new research areas and approaches.

  17. Understanding Video Games

    DEFF Research Database (Denmark)

    Heide Smith, Jonas; Tosca, Susana Pajares; Egenfeldt-Nielsen, Simon

    From Pong to PlayStation 3 and beyond, Understanding Video Games is the first general introduction to the exciting new field of video game studies. This textbook traces the history of video games, introduces the major theories used to analyze games such as ludology and narratology, reviews...... the economics of the game industry, examines the aesthetics of game design, surveys the broad range of game genres, explores player culture, and addresses the major debates surrounding the medium, from educational benefits to the effects of violence. Throughout the book, the authors ask readers to consider...... larger questions about the medium: * What defines a video game? * Who plays games? * Why do we play games? * How do games affect the player? Extensively illustrated, Understanding Video Games is an indispensable and comprehensive resource for those interested in the ways video games are reshaping...

  18. Reflections on academic video

    Directory of Open Access Journals (Sweden)

    Thommy Eriksson

    2012-11-01

    Full Text Available As academics we study, research and teach audiovisual media, yet rarely disseminate and mediate through it. Today, developments in production technologies have enabled academic researchers to create videos and mediate audiovisually. In academia it is taken for granted that everyone can write a text. Is it now time to assume that everyone can make a video essay? Using the online journal of academic videos Audiovisual Thinking and the videos published in it as a case study, this article seeks to reflect on the emergence and legacy of academic audiovisual dissemination. Anchoring academic video and audiovisual dissemination of knowledge in two critical traditions, documentary theory and semiotics, we will argue that academic video is in fact already present in a variety of academic disciplines, and that academic audiovisual essays are bringing trends and developments that have long been part of academic discourse to their logical conclusion.

  19. Real-time high definition H.264 video decode using the Xbox 360 GPU

    Science.gov (United States)

    Arevalo Baeza, Juan Carlos; Chen, William; Christoffersen, Eric; Dinu, Daniel; Friemel, Barry

    2007-09-01

    The Xbox 360 is powered by three dual pipeline 3.2 GHz IBM PowerPC processors and a 500 MHz ATI graphics processing unit. The Graphics Processing Unit (GPU) is a special-purpose device, intended to create advanced visual effects and to render realistic scenes for the latest Xbox 360 games. In this paper, we report work on using the GPU as a parallel processing unit to accelerate the decoding of H.264/AVC high-definition (1920x1080) video. We report our experiences in developing a real-time, software-only high-definition video decoder for the Xbox 360.

  20. Scientific Computing Using Consumer Video-Gaming Hardware Devices

    CERN Document Server

    Volkema, Glenn

    2016-01-01

    Commodity video-gaming hardware (consoles, graphics cards, tablets, etc.) performance has been advancing at a rapid pace owing to strong consumer demand and stiff market competition. Gaming hardware devices are currently amongst the most powerful and cost-effective computational technologies available in quantity. In this article, we evaluate a sample of current generation video-gaming hardware devices for scientific computing and compare their performance with specialized supercomputing general purpose graphics processing units (GPGPUs). We use the OpenCL SHOC benchmark suite, which is a measure of the performance of compute hardware on various different scientific application kernels, and also a popular public distributed computing application, Einstein@Home in the field of gravitational physics for the purposes of this evaluation.

  1. Mograph Cinema 4d untuk Menunjang Efek Visual Video Klip

    Directory of Open Access Journals (Sweden)

    Ardiyan Ardiyan

    2010-10-01

    Full Text Available This research is to talk about the advantages of MoGraph as one reliability feature in 3D modeling application, 4D Cinema as the implemented example in Cinta Laura video clip. The advantage in MoGraph is the ability to create multiple object moving effect accordingly and (or randomly easily and efficiently, also supported by the render quality of Cinema 4D that clean and relatively fast. The advantage made MoGraph Cinema 4D is suitable to use to enrich the visual effect a motion graphic work. The quality is hoped to support MoGraph usage as more creative. Regarding today’s visual variation is effected by the digital technology development, therefore the implementation of MoGraph Conema 4D is hoped to be optimally supporting creativity in making video clip in motion graphic art content. 

  2. Video transmission on ATM networks. Ph.D. Thesis

    Science.gov (United States)

    Chen, Yun-Chung

    1993-01-01

    The broadband integrated services digital network (B-ISDN) is expected to provide high-speed and flexible multimedia applications. Multimedia includes data, graphics, image, voice, and video. Asynchronous transfer mode (ATM) is the adopted transport techniques for B-ISDN and has the potential for providing a more efficient and integrated environment for multimedia. It is believed that most broadband applications will make heavy use of visual information. The prospect of wide spread use of image and video communication has led to interest in coding algorithms for reducing bandwidth requirements and improving image quality. The major results of a study on the bridging of network transmission performance and video coding are: Using two representative video sequences, several video source models are developed. The fitness of these models are validated through the use of statistical tests and network queuing performance. A dual leaky bucket algorithm is proposed as an effective network policing function. The concept of the dual leaky bucket algorithm can be applied to a prioritized coding approach to achieve transmission efficiency. A mapping of the performance/control parameters at the network level into equivalent parameters at the video coding level is developed. Based on that, a complete set of principles for the design of video codecs for network transmission is proposed.

  3. Graphic Designer/Production Coordinator | IDRC - International ...

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

    ; Plans and manages all print and CD reproduction services; Maintains policies for the ... Provides design and graphic services for print- and Web-based publishing;; Initiates designs and carries out production of IDRC corporate publications; ...

  4. Group Design Problems in Engineering Design Graphics.

    Science.gov (United States)

    Kelley, David

    2001-01-01

    Describes group design techniques used within the engineering design graphics sequence at Western Washington University. Engineering and design philosophies such as concurrent engineering place an emphasis on group collaboration for the solving of design problems. (Author/DDR)

  5. Formal Analysis of Graphical Security Models

    DEFF Research Database (Denmark)

    Aslanyan, Zaruhi

    , software components and human actors interacting with each other to form so-called socio-technical systems. The importance of socio-technical systems to modern societies requires verifying their security properties formally, while their inherent complexity makes manual analyses impracticable. Graphical...... formal verification of their properties. Finally, their appealing graphical notations enable to communicate security concerns in an understandable way also to non-experts, often in charge of the decision making. This dissertation argues that automated techniques can be developed on graphical security...... models to evaluate qualitative and quantitative security properties of socio-technical systems and to synthesise optimal attack and defence strategies. In support to this claim we develop analysis techniques for widely-used graphical security models such as attack trees and attack-defence trees. Our...

  6. Graphical modelling software in R - status

    DEFF Research Database (Denmark)

    Dethlefsen, Claus; Højsgaard, Søren; Lauritzen, Steffen L.

    Graphical models in their modern form have been around for nearly a quarter of a century.  Various computer programs for inference in graphical models have been developed over that period. Some examples of free software programs are BUGS (Thomas 1994), CoCo (Badsberg2001), Digram (Klein, Keiding......, and Kreiner 1995), MIM (Edwards  2000), and Tetrad (Glymour, Scheines, Spirtes, and Kelley 1987). The gR initiative (Lauritzen 2002) aims at making graphical models available in R (R Development Core Team 2006). A small grant from the Danish Science Foundation supported this initiative. We will summarize...... the results of the initiative so far. Specifically we will illustrate some of the R packages for graphical modelling currently on CRAN and discuss their strengths and weaknesses....

  7. How to Apply for Protection Time Graphic

    Science.gov (United States)

    We will review insect repellent products that voluntarily apply to use the repellency awareness graphic to ensure that their scientific data meet current testing protocols and standard evaluation processes.

  8. Using PROLOG with Graphics in the Classroom.

    Science.gov (United States)

    Ball, Derek

    1984-01-01

    PROLOG is a relatively new programing language with graphics capability. In addition, the language has a declarative rather than a procedural structure. Two programs illustrating use of the language in the mathematics classroom are presented. (JN)

  9. Graphical programming for training natural science teachers

    Directory of Open Access Journals (Sweden)

    Т К Константинян

    2008-06-01

    Full Text Available Problems of applying methods of graphical programming for educational processes of natural sciences teachers training are considered in the article. Deductive problems, approaches and advantages of virtual automatization of laboratory practicals are also discussed.

  10. Computation and graphics in mathematical research

    Energy Technology Data Exchange (ETDEWEB)

    Hoffman, D.A.; Spruck, J.

    1992-08-13

    This report discusses: The description of the GANG Project and results for prior research; the center for geometry, analysis, numerics and graphics; description of GANG Laboratory; software development at GANG; and mathematical and scientific research activities.

  11. Marginalization and Collapsibility in Graphical Interaction Models

    OpenAIRE

    Frydenberg, Morten

    1990-01-01

    The behaviour of a graphical interaction model under marginalization is discussed. A graphical interaction model is called collapsible onto a set of variables if the class of marginal distributions is the same as that implied by the related subgraph. The necessary and sufficient condition for collapsibility is found and it is shown that collapsibility is equivalent to a range of other important statistical properties of the model.

  12. Alarm annunciation in a graphical environment

    Energy Technology Data Exchange (ETDEWEB)

    Adams, D.G.

    1994-08-01

    Well-designed graphical user interfaces, such as Microsoft Windows{trademark} or UNIX{trademark} -- based X-Windows, provide a capability for enhanced display of security alarm information. Conversely, a poorly designed interface can quickly overwhelm an operator. This paper describes types of graphical information that can be displayed and offers guidance on how to best display that information. Limits are proposed for the complexity of the user interface, and guidelines are suggested for the display of maps and sensors.

  13. Green Power Partnership Videos

    Science.gov (United States)

    The Green Power Partnership develops videos on a regular basis that explore a variety of topics including, Green Power partnership, green power purchasing, Renewable energy certificates, among others.

  14. A Linux Workstation for High Performance Graphics

    Science.gov (United States)

    Geist, Robert; Westall, James

    2000-01-01

    The primary goal of this effort was to provide a low-cost method of obtaining high-performance 3-D graphics using an industry standard library (OpenGL) on PC class computers. Previously, users interested in doing substantial visualization or graphical manipulation were constrained to using specialized, custom hardware most often found in computers from Silicon Graphics (SGI). We provided an alternative to expensive SGI hardware by taking advantage of third-party, 3-D graphics accelerators that have now become available at very affordable prices. To make use of this hardware our goal was to provide a free, redistributable, and fully-compatible OpenGL work-alike library so that existing bodies of code could simply be recompiled. for PC class machines running a free version of Unix. This should allow substantial cost savings while greatly expanding the population of people with access to a serious graphics development and viewing environment. This should offer a means for NASA to provide a spectrum of graphics performance to its scientists, supplying high-end specialized SGI hardware for high-performance visualization while fulfilling the requirements of medium and lower performance applications with generic, off-the-shelf components and still maintaining compatibility between the two.

  15. Surface and deep structures in graphics comprehension.

    Science.gov (United States)

    Schnotz, Wolfgang; Baadte, Christiane

    2015-05-01

    Comprehension of graphics can be considered as a process of schema-mediated structure mapping from external graphics on internal mental models. Two experiments were conducted to test the hypothesis that graphics possess a perceptible surface structure as well as a semantic deep structure both of which affect mental model construction. The same content was presented to different groups of learners by graphics from different perspectives with different surface structures but the same deep structure. Deep structures were complementary: major features of the learning content in one experiment became minor features in the other experiment, and vice versa. Text was held constant. Participants were asked to read, understand, and memorize the learning material. Furthermore, they were either instructed to process the material from the perspective supported by the graphic or from an alternative perspective, or they received no further instruction. After learning, they were asked to recall the learning content from different perspectives by completing graphs of different formats as accurately as possible. Learners' recall was more accurate if the format of recall was the same as the learning format which indicates surface structure influences. However, participants also showed more accurate recall when they remembered the content from a perspective emphasizing the deep structure, regardless of the graphics format presented before. This included better recall of what they had not seen than of what they really had seen before. That is, deep structure effects overrode surface effects. Depending on context conditions, stimulation of additional cognitive processing by instruction had partially positive and partially negative effects.

  16. Perception of tactile graphics: embossings versus cutouts.

    Science.gov (United States)

    Kalia, Amy; Hopkins, Rose; Jin, David; Yazzolino, Lindsay; Verma, Svena; Merabet, Lotfi; Phillips, Flip; Sinha, Pawan

    2014-01-01

    Graphical information, such as illustrations, graphs, and diagrams, are an essential complement to text for conveying knowledge about the world. Although graphics can be communicated well via the visual modality, conveying this information via touch has proven to be challenging. The lack of easily comprehensible tactile graphics poses a problem for the blind. In this paper, we advance a hypothesis for the limited effectiveness of tactile graphics. The hypothesis contends that conventional graphics that rely upon embossings on two-dimensional surfaces do not allow the deployment of tactile exploratory procedures that are crucial for assessing global shape. Besides potentially accounting for some of the shortcomings of current approaches, this hypothesis also serves a prescriptive purpose by suggesting a different strategy for conveying graphical information via touch, one based on cutouts. We describe experiments demonstrating the greater effectiveness of this approach for conveying shape and identity information. These results hold the potential for creating more comprehensible tactile drawings for the visually impaired while also providing insights into shape estimation processes in the tactile modality.

  17. Preservice Special Education: Interactive Video Simulation.

    Science.gov (United States)

    Evans, Robert J.

    The paper describes a microcomputer simulation program developed to train preservice special education teachers in the use of basic behavior modification skills. The program was written in SuperPILOT on an Apple IIe using a BCD interface card and a Panasonic NV 8200 video tape recorder. Production suggestions are offered. The incorporation of…

  18. Face identification in videos from mobile cameras

    NARCIS (Netherlands)

    Mu, Meiru; Spreeuwers, Lieuwe Jan; Veldhuis, Raymond N.J.

    2014-01-01

    It is still challenging to recognize faces reliably in videos from mobile camera, although mature automatic face recognition technology for still images has been available for quite some time. Suppose we want to be alerted when suspects appear in the recording of a police Body-Cam, even a good face

  19. A Standard-Compliant Virtual Meeting System with Active Video Object Tracking

    Directory of Open Access Journals (Sweden)

    Chang Yao-Jen

    2002-01-01

    Full Text Available This paper presents an H.323 standard compliant virtual video conferencing system. The proposed system not only serves as a multipoint control unit (MCU for multipoint connection but also provides a gateway function between the H.323 LAN (local-area network and the H.324 WAN (wide-area network users. The proposed virtual video conferencing system provides user-friendly object compositing and manipulation features including 2D video object scaling, repositioning, rotation, and dynamic bit-allocation in a 3D virtual environment. A reliable, and accurate scheme based on background image mosaics is proposed for real-time extracting and tracking foreground video objects from the video captured with an active camera. Chroma-key insertion is used to facilitate video objects extraction and manipulation. We have implemented a prototype of the virtual conference system with an integrated graphical user interface to demonstrate the feasibility of the proposed methods.

  20. Editing, Publishing and Aggregating Video Articles: Do We Need a Scholarly Approach?

    Science.gov (United States)

    Assadi, Reza; Gasparyan, Armen Yuri

    2015-09-01

    The article supports the idea of providing infrastructure and training for preparing and publishing quality video articles. Properly edited, formatted, and verified video items can present graphic contents of interest to the global scientific community. It is suggested to apply traditional attributes of scholarly articles to video items and aggregate them on a specifically designed editing, publishing, and indexing platform, called PubTube. As a mega platform, PubTube may provide space for a variety of open-access sources of information, ranging from short audio-video presentations to research protocols and educational lectures. Video articles on the platform have to pass quality checks by skilled reviewers. Global editorial associations should be prepared to improving the whole process of publishing and aggregating video articles.