Design of lightning protection for a full-authority digital engine control

NASA Technical Reports Server (NTRS)

Dargi, M.; Rupke, E.; Wiles, K.

1991-01-01

The steps and procedures are described which are necessary to achieve a successful lightning-protection design for a state-of-the-art Full-Authority Digital Engine Control (FADEC) system. The engine and control systems used as examples are fictional, but the design and verification methods are real. Topics discussed include: applicable airworthiness regulation, selection of equipment transient design and control levels for the engine/airframe and intra-engine segments of the system, the use of cable shields, terminal-protection devices and filter circuits in hardware protection design, and software approaches to minimize upset potential. Shield terminations, grounding, and bonding are also discussed, as are the important elements of certification and test plans, and the role of tests and analyses. Also included are examples of multiple-stroke and multiple-burst testing. A review of design pitfalls and challenges, and status of applicable test standards such as RTCA DO-160, Section 22, are presented.

Lightning protection of full authority digital electronic systems

NASA Astrophysics Data System (ADS)

Crofts, David

1991-08-01

Modern electronic systems are vulnerable to transient and they now provide safety critical functions such as full authority digital electronic control (FADEC) units for fly by wire aircraft. Of the traditional suppression technologies available diodes have gained the wider acceptance, however, they lack the current handling capacity to meet existing threat levels. The development of high speed fold back devices where, at a specified voltage, the off state resistance switches to a very low on state one has provided the equivalent to a semiconductor spark gap. The size of the technology enables it to be integrated into connectors of interconnection cables. To illustrate the performance the technology was developed to meet the Lightning Protection requirements for FADEC units within aeroengines. Work was also carried out to study switching behavior with the waveform 5, the 500 us, 10 kA pulse applied to cable assemblies. This test enabled all the switches in a connector to be fired simultaneously.

Lightning protection of full authority digital electronic systems

NASA Technical Reports Server (NTRS)

Crofts, David

1991-01-01

Modern electronic systems are vulnerable to transient and they now provide safety critical functions such as full authority digital electronic control (FADEC) units for fly by wire aircraft. Of the traditional suppression technologies available diodes have gained the wider acceptance, however, they lack the current handling capacity to meet existing threat levels. The development of high speed fold back devices where, at a specified voltage, the off state resistance switches to a very low on state one has provided the equivalent to a semiconductor spark gap. The size of the technology enables it to be integrated into connectors of interconnection cables. To illustrate the performance the technology was developed to meet the Lightning Protection requirements for FADEC units within aeroengines. Work was also carried out to study switching behavior with the waveform 5, the 500 us, 10 kA pulse applied to cable assemblies. This test enabled all the switches in a connector to be fired simultaneously.

Derivation and Cross-Validation of Cutoff Scores for Patients With Schizophrenia Spectrum Disorders on WAIS-IV Digit Span-Based Performance Validity Measures.

PubMed

Glassmire, David M; Toofanian Ross, Parnian; Kinney, Dominique I; Nitch, Stephen R

2016-06-01

Two studies were conducted to identify and cross-validate cutoff scores on the Wechsler Adult Intelligence Scale-Fourth Edition Digit Span-based embedded performance validity (PV) measures for individuals with schizophrenia spectrum disorders. In Study 1, normative scores were identified on Digit Span-embedded PV measures among a sample of patients (n = 84) with schizophrenia spectrum diagnoses who had no known incentive to perform poorly and who put forth valid effort on external PV tests. Previously identified cutoff scores resulted in unacceptable false positive rates and lower cutoff scores were adopted to maintain specificity levels ≥90%. In Study 2, the revised cutoff scores were cross-validated within a sample of schizophrenia spectrum patients (n = 96) committed as incompetent to stand trial. Performance on Digit Span PV measures was significantly related to Full Scale IQ in both studies, indicating the need to consider the intellectual functioning of examinees with psychotic spectrum disorders when interpreting scores on Digit Span PV measures. © The Author(s) 2015.

Flight experience with a fail-operational digital fly-by-wire control system

NASA Technical Reports Server (NTRS)

Brown, S. R.; Szalai, K. J.

1977-01-01

The NASA Dryden Flight Research Center is flight testing a triply redundant digital fly-by-wire (DFBW) control system installed in an F-8 aircraft. The full-time, full-authority system performs three-axis flight control computations, including stability and command augmentation, autopilot functions, failure detection and isolation, and self-test functions. Advanced control law experiments include an active flap mode for ride smoothing and maneuver drag reduction. This paper discusses research being conducted on computer synchronization, fault detection, fault isolation, and recovery from transient faults. The F-8 DFBW system has demonstrated immunity from nuisance fault declarations while quickly identifying truly faulty components.

Experience with synchronous and asynchronous digital control systems

NASA Technical Reports Server (NTRS)

Regenie, V. A.; Chacon, C. V.; Lock, W. P.

1986-01-01

Flight control systems have undergone a revolution since the days of simple mechanical linkages; presently the most advanced systems are full-authority, full-time digital systems controlling unstable aircraft. With the use of advanced control systems, the aerodynamic design can incorporate features that allow greater performance and fuel savings, as can be seen on the new Airbus design and advanced tactical fighter concepts. These advanced aircraft will be and are relying on the flight control system to provide the stability and handling qualities required for safe flight and to allow the pilot to control the aircraft. Various design philosophies have been proposed and followed to investigate system architectures for these advanced flight control systems. One major area of discussion is whether a multichannel digital control system should be synchronous or asynchronous. This paper addressed the flight experience at the Dryden Flight Research Facility of NASA's Ames Research Center with both synchronous and asynchronous digital flight control systems. Four different flight control systems are evaluated against criteria such as software reliability, cost increases, and schedule delays.

Operational viewpoint of the X-29A digital flight control system

NASA Technical Reports Server (NTRS)

Chacon, Vince; Mcbride, David

1988-01-01

In the past few years many flight control systems have been implemented as full-authority, full-time digital systems. The digital design has allowed flight control systems to make use of many enhanced elements that are generally considered too complex to implement in an analog system. Examples of these elements are redundant information exchanged between channels to allow for continued operation after multiple failures and multiple variable gain schedules to optimize control of the aircraft throughout its flight envelope and in all flight modes. The introduction of the digital system for flight control also created the problem of obtaining information from the system in an understandable and useful format. This paper presents how the X-29A was dealt with during its operations at NASA Ames-Dryden Flight Research Facility. A brief description of the X-29A control system, a discussion of the tools developed to aid in daily operations, and the troubleshooting of the aircraft are included.

Digital electronic engine control history

NASA Technical Reports Server (NTRS)

Putnam, T. W.

1984-01-01

Full authority digital electronic engine controls (DEECs) were studied, developed, and ground tested because of projected benefits in operability, improved performance, reduced maintenance, improved reliability, and lower life cycle costs. The issues of operability and improved performance, however, are assessed in a flight test program. The DEEC on a F100 engine in an F-15 aircraft was demonstrated and evaluated. The events leading to the flight test program are chronicled and important management and technical results are identified.

Encoding Schemes For A Digital Optical Multiplier Using The Modified Signed-Digit Number Representation

NASA Astrophysics Data System (ADS)

Lasher, Mark E.; Henderson, Thomas B.; Drake, Barry L.; Bocker, Richard P.

1986-09-01

The modified signed-digit (MSD) number representation offers full parallel, carry-free addition. A MSD adder has been described by the authors. This paper describes how the adder can be used in a tree structure to implement an optical multiply algorithm. Three different optical schemes, involving position, polarization, and intensity encoding, are proposed for realizing the trinary logic system. When configured in the generic multiplier architecture, these schemes yield the combinatorial logic necessary to carry out the multiplication algorithm. The optical systems are essentially three dimensional arrangements composed of modular units. Of course, this modularity is important for design considerations, while the parallelism and noninterfering communication channels of optical systems are important from the standpoint of reduced complexity. The authors have also designed electronic hardware to demonstrate and model the combinatorial logic required to carry out the algorithm. The electronic and proposed optical systems will be compared in terms of complexity and speed.

Description and theory of operation of the computer by-pass system for the NASA F-8 digital fly-by-wire control system

NASA Technical Reports Server (NTRS)

1978-01-01

A triplex digital flight control system was installed in a NASA F-8C airplane to provide fail operate, full authority control. The triplex digital computers and interface circuitry process the pilot commands and aircraft motion feedback parameters according to the selected control laws, and they output the surface commands as an analog signal to the servoelectronics for position control of the aircraft's power actuators. The system and theory of operation of the computer by pass and servoelectronics are described and an automated ground test for each axis is included.

Flight testing the digital electronic engine control in the F-15 airplane

NASA Technical Reports Server (NTRS)

Myers, L. P.

1984-01-01

The digital electronic engine control (DEEC) is a full-authority digital engine control developed for the F100-PW-100 turbofan engine which was flight tested on an F-15 aircraft. The DEEC hardware and software throughout the F-15 flight envelope was evaluated. Real-time data reduction and data display systems were implemented. New test techniques and stronger coordination between the propulsion test engineer and pilot were developed which produced efficient use of test time, reduced pilot work load, and greatly improved quality data. The engine pressure ratio (EPR) control mode is demonstrated. It is found that the nonaugmented throttle transients and engine performance are satisfactory.

Experience with synchronous and asynchronous digital control systems. [for flight

NASA Technical Reports Server (NTRS)

Regenie, Victoria A.; Chacon, Claude V.; Lock, Wilton P.

1986-01-01

Flight control systems have undergone a revolution since the days of simple mechanical linkages; presently the most advanced systems are full-authority, full-time digital systems controlling unstable aircraft. With the use of advanced control systems, the aerodynamic design can incorporate features that allow greater performance and fuel savings, as can be seen on the new Airbus design and advanced tactical fighter concepts. These advanced aircraft will be and are relying on the flight control system to provide the stability and handling qualities required for safe flight and to allow the pilot to control the aircraft. Various design philosophies have been proposed and followed to investigate system architectures for these advanced flight control systems. One major area of discussion is whether a multichannel digital control system should be synchronous or asynchronous. This paper addressed the flight experience at the Dryden Flight Research Facility of NASA's Ames Research Center with both synchronous and asynchronous digital flight control systems. Four different flight control systems are evaluated against criteria such as software reliability, cost increases, and schedule delays.

78 FR 1733 - Airworthiness Directives; Thielert Aircraft Engines GmbH Reciprocating Engines

Federal Register 2010, 2011, 2012, 2013, 2014

2013-01-09

... Airworthiness Directives; Thielert Aircraft Engines GmbH Reciprocating Engines AGENCY: Federal Aviation... (AD) for all Thielert Aircraft Engines GmbH models TAE 125-01, TAE 125-02- 99, and TAE 125-02-114 reciprocating engines. That AD currently requires installation of full-authority digital electronic control...

Dentists' use of digital radiographic techniques: Part I - intraoral X-ray: a questionnaire study of Swedish dentists.

PubMed

Svenson, Björn; Ståhlnacke, Katri; Karlsson, Reet; Fält, Anna

2018-03-01

The present study aims to gain knowledge about the dentist's use and choice of digital intraoral imaging methods. A questionnaire sent to 2481 dentists within the Swedish Dental Society contained questions about the type of X-ray technique used, problems experienced with digital radiography, and reasons for choosing digital technology, and about indications, clinic size and type of service. Response rate was 53%. Ninety-eight percent of the dentists had made the transition to digital radiography; only 2% used film technique, and solid-state detector (SSD) was the most used digital technique. More years in service decreases the likelihood of applying individual indications for performing a full mouth examination. More retakes were done with SSDs compared to storage phosphor plates. Reasons for choosing digital techniques were that work was easier and communication with the patients improved. However, dentists also experienced problems with digital techniques, such as exposure and projection errors and inadequate image quality. The Swedish Radiation Safety Authority states that all radiological examinations should be justified, something not always followed. This study showed that 98% of the respondents, Swedish dentists within the Swedish Dental Society, used digital techniques, and the most used was the solid-state technique.

76 FR 22298 - Airworthiness Directives; Cessna Aircraft Company (Cessna) Model 172 Airplanes Modified by...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-21

... AD requires installing a full authority digital engine control (FADEC) backup battery, replacing the... battery every 12 calendar months. This AD was prompted by an incident where an airplane experienced an in... battery, replacing the supplement pilot's operating handbook and FAA approved airplane flight manual, and...

76 FR 33981 - Special Conditions: Pratt and Whitney Canada Model PW210S Turboshaft Engine

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-10

... system includes a dual channel full authority digital electronic control. The engine will incorporate a... mode operation. The commenter stated that the 400 cycle dynamic braking test is inappropriate for this engine certification program, that engine dynamics will be difficult to simulate in a test stand, and...

Quiet Clean Short-haul Experimental Engine (QCSEE)

NASA Technical Reports Server (NTRS)

Willis, W. S.

1979-01-01

The design, fabrication, and testing of two experimental propulsion systems for powered lift transport aircraft are given. The under the wing (UTW) engine was intended for installation in an externally blown flap configuration and the over the wing (OTW) engine for use in an upper surface blowing aircraft. The UTW engine included variable pitch composite fan blades, main reduction gear, composite fan frame and nacelle, and a digital control system. The OTW engine included a fixed pitch fan, composite fan frame, boilerplate nacelle, and a full authority digital control. Many acoustic, pollution, performance, and weight goals were demonstrated.

Personal Name Identification in the Practice of Digital Repositories

ERIC Educational Resources Information Center

Xia, Jingfeng

2006-01-01

Purpose: To propose improvements to the identification of authors' names in digital repositories. Design/methodology/approach: Analysis of current name authorities in digital resources, particularly in digital repositories, and analysis of some features of existing repository applications. Findings: This paper finds that the variations of authors'…

The Effectiveness of Prompts to Promote Engagement With Digital Interventions: A Systematic Review.

PubMed

Alkhaldi, Ghadah; Hamilton, Fiona L; Lau, Rosa; Webster, Rosie; Michie, Susan; Murray, Elizabeth

2016-01-08

Digital interventions have been effective in improving numerous health outcomes and health behaviors; furthermore, they are increasingly being used in different health care areas, including self-management of long-term conditions, mental health, and health promotion. The full potential of digital interventions is hindered by a lack of user engagement. There is an urgent need to develop effective strategies that can promote users' engagement with digital interventions. One potential method is the use of technology-based reminders or prompts. To evaluate the effectiveness of technology-based strategies for promoting engagement with digital interventions. Cochrane Collaboration guidelines on systematic review methodology were followed. The search strategy was executed across 7 electronic databases: the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, Web of Science, the Education Resources Information Center (ERIC), PsycINFO, and the Cumulative Index to Nursing and Allied Health Literature (CINAHL). Databases were searched from inception to September 13, 2013, with no language or publication type restrictions, using three concepts: randomized controlled trials, digital interventions, and engagement. Gray literature and reference lists of included studies were also searched. Titles and abstracts were independently screened by 2 authors, then the full texts of potentially eligible papers were obtained and double-screened. Data from eligible papers were extracted by one author and checked for accuracy by another author. Bias was assessed using the Cochrane risk of bias assessment tool. Narrative synthesis was performed on all included studies and, where appropriate, data were pooled using meta-analysis. All findings were reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A total of 14 studies were included in the review with 8774 participants. Of the 14 studies, 9 had sufficient data to be included in the meta-analyses. The meta-analyses suggested that technology-based strategies can potentially promote engagement compared to no strategy for dichotomous outcomes (relative risk [RR] 1.27, 95% CI 1.01-1.60, I(2)=71%), but due to considerable heterogeneity and the small sample sizes in most studies, this result should be treated with caution. No studies reported adverse or economic outcomes. Only one study with a small sample size compared different characteristics; the study found that strategies promoting new digital intervention content and those sent to users shortly after they started using the digital intervention were more likely to engage users. Overall, studies reported borderline positive effects of technology-based strategies on engagement compared to no strategy. However, the results have to be interpreted with caution. More research is needed to replicate findings and understand which characteristics of the strategies are effective in promoting engagement and how cost-effective they are.

First spectra from a new, wide band, hybrid digital correlator spectrometer for the FIRST-HIFI instrument.

NASA Astrophysics Data System (ADS)

Cais, P.; Ravera, L.; Lagrange, D.; Giard, M.; Baudry, A.; Mayvial, J. Y.

1998-11-01

The authors have designed and built a new, wide band, modulable resolution spectrometer, in view of full astronomical qualifying tests, and to prepare future models for the FIRST satellite's heterodyne instrument. The spectrometer, a hybrid digital autocorrelator, offers flexibility in terms of bandwidth (from 170 MHz to 680 MHz) and resolution (from 700 kHz to 3 MHz). This spectrometer required the development of a dedicated analog filter bank, homemade samplers, and the design of full custom GaAs integrated circuits. Laboratory tests have shown excellent agreement with expected performances and observations performed with the IRAM 30-m radiotelescope have qualified its capabilities. Despite the relatively limited number of channels of the current prototype compared to other spectrometers, the main advantages are its stability (inherent to digital technique), and its spectral versatility. Microelectronics advances and rad-tolerance of the spectrometer components are used to prepare a new, compact, and low power consumption autocorrelator in view of a flight model for HIFI, the heterodyne instrument on the ESA cornerstone mission FIRST.

Propulsion control experience used in the Highly Integrated Digital Electronic Control (HIDEC) program

NASA Technical Reports Server (NTRS)

Myers, L. P.; Burcham, F. W., Jr.

1984-01-01

The highly integrated digital electronic control (HIDEC) program will integrate the propulsion and flight control systems on an F-15 airplane at NASA Ames Research Center's Dryden Flight Research Facility. Ames-Dryden has conducted several propulsion control programs that have contributed to the HIDEC program. The digital electronic engine control (DEEC) flight evaluation investigated the performance and operability of the F100 engine equipped with a full-authority digital electronic control system. Investigations of nozzle instability, fault detection and accommodation, and augmentor transient capability provided important information for the HIDEC program. The F100 engine model derivative (EMD) was also flown in the F-15 airplane, and airplane performance was significantly improved. A throttle response problem was found and solved with a software fix to the control logic. For the HIDEC program, the F100 EMD engines equipped with DEEC controls will be integrated with the digital flight control system. The control modes to be implemented are an integrated flightpath management mode and an integrated adaptive engine control system mode. The engine control experience that will be used in the HIDEC program is discussed.

A model for a PC-based, universal-format, multimedia digitization system: moving beyond the scanner.

PubMed

McEachen, James C; Cusack, Thomas J; McEachen, John C

2003-08-01

Digitizing images for use in case presentations based on hardcopy films, slides, photographs, negatives, books, and videos can present a challenging task. Scanners and digital cameras have become standard tools of the trade. Unfortunately, use of these devices to digitize multiple images in many different media formats can be a time-consuming and in some cases unachievable process. The authors' goal was to create a PC-based solution for digitizing multiple media formats in a timely fashion while maintaining adequate image presentation quality. The authors' PC-based solution makes use of off-the-shelf hardware applications to include a digital document camera (DDC), VHS video player, and video-editing kit. With the assistance of five staff radiologists, the authors examined the quality of multiple image types digitized with this equipment. The authors also quantified the speed of digitization of various types of media using the DDC and video-editing kit. With regard to image quality, the five staff radiologists rated the digitized angiography, CT, and MR images as adequate to excellent for use in teaching files and case presentations. With regard to digitized plain films, the average rating was adequate. As for performance, the authors recognized a 68% improvement in the time required to digitize hardcopy films using the DDC instead of a professional quality scanner. The PC-based solution provides a means for digitizing multiple images from many different types of media in a timely fashion while maintaining adequate image presentation quality.

Advanced Control Systems for Aircraft Powerplants

DTIC Science & Technology

1980-02-01

production of high- integrity software. 1.0 INTRODUCTION Work on full-authority digital control for gas turbines was started at Rolls- Royce Limited... INTRODUCTION In order to fully understand the operation of the Secondary Power System Control Unit - abbreviated SPSCU - we must first take a close look at...Only Memory EPROM -- Erasable Read Only Memory PLA -- Power Lever Angle LVDT -- Linear Variable Differential Transformer INTRODUCTION Preliminary design

From NHS Choices to the integrated customer service platform.

PubMed

Gann, Bob; Grant, Maria J

2013-03-01

In 2013 the NHS Commissioning Board launches its new integrated customer service platform. The new service utilises the full range of channels (web, telephone, apps etc) to provide access to information to support transparency, participation and transactions. Digital health services have proven benefits in informed choice, shared decision making and patient participation. © 2013 The authors. Health Information and Libraries Journal © 2013 Health Libraries Group.

Stability Analysis of Distributed Engine Control Systems Under Communication Packet Drop (Postprint)

DTIC Science & Technology

2008-07-01

use, modify, reproduce, release, perform, display, or disclose the work. 14. ABSTRACT Currently, Full Authority Digital Engine Control ( FADEC ...based on a centralized architecture framework is being widely used for gas turbine engine control. However, current FADEC is not able to meet the...system (DEC). FADEC based on Distributed Control Systems (DCS) offers modularity, improved control systems prognostics and fault tolerance along with

Status, Vision, and Challenges of an Intelligent Distributed Engine Control Architecture (Postprint)

DTIC Science & Technology

2007-09-18

TERMS turbine engine control, engine health management, FADEC , Universal FADEC , Distributed Controls, UF, UF Platform, common FADEC , Generic FADEC ...Modular FADEC , Adaptive Control 16. SECURITY CLASSIFICATION OF: 19a. NAME OF RESPONSIBLE PERSON (Monitor) a. REPORT Unclassified b. ABSTRACT...Eventually the Full Authority Digital Electronic Control ( FADEC ) became the norm. Presently, this control system architecture accounts for 15 to 20% of

Land classification of south-central Iowa from computer enhanced images

NASA Technical Reports Server (NTRS)

Lucas, J. R. (Principal Investigator); Taranik, J. V.; Billingsley, F. C.

1976-01-01

The author has identified the following significant results. The Iowa Geological Survey developed its own capability for producing color products from digitally enhanced LANDSAT data. Research showed that efficient production of enhanced images required full utilization of both computer and photographic enhancement procedures. The 29 August 1972 photo-optically enhanced color composite was more easily interpreted for land classification purposes than standard color composites.

Analog Design for Digital Deployment of a Serious Leadership Game

NASA Technical Reports Server (NTRS)

Maxwell, Nicholas; Lang, Tristan; Herman, Jeffrey L.; Phares, Richard

2012-01-01

This paper presents the design, development, and user testing of a leadership development simulation. The authors share lessons learned from using a design process for a board game to allow for quick and inexpensive revision cycles during the development of a serious leadership development game. The goal of this leadership simulation is to accelerate the development of leadership capacity in high-potential mid-level managers (GS-15 level) in a federal government agency. Simulation design included a mixed-method needs analysis, using both quantitative and qualitative approaches to determine organizational leadership needs. Eight design iterations were conducted, including three user testing phases. Three re-design iterations followed initial development, enabling game testing as part of comprehensive instructional events. Subsequent design, development and testing processes targeted digital application to a computer- and tablet-based environment. Recommendations include pros and cons of development and learner testing of an initial analog simulation prior to full digital simulation development.

Jet Engine Control Using Ethernet with a BRAIN (Postprint)

DTIC Science & Technology

2008-07-01

current communications may be mitigated. 15. SUBJECT TERMS BRAIN, Braided Ring Availability Integrity Network, Gas turbine, FADEC , disturbed...urrent state of the art engine controls have converged on the notion of the Full Authority Digital Engine Control ( FADEC ), which consists of a centralized...is completely dependent on the proper operation of the controller. In current systems, the FADEC is often located on the relatively cool engine fan

Distributed Control of Turbofan Engines

DTIC Science & Technology

2009-08-01

performance of the engine. Thus the Full Authority Digital Engine Controller ( FADEC ) still remains the central arbiter of the engine’s dynamic behavior...instance, if the control laws are not distributed the dependence on the FADEC remains high, and system reliability can only be insured through many...if distributed computing is used at the local level and only coordinated by the FADEC . Such an architecture must be studied in the context of noisy

Simulator Evaluation of Simplified Propulsion-Only Emergency Flight Control Systems on Transport Aircraft

NASA Technical Reports Server (NTRS)

Burcham, Frank W., Jr.; Kaneshige, John; Bull, John; Maine, Trindel A.

1999-01-01

With the advent of digital engine control systems, considering the use of engine thrust for emergency flight control has become feasible. Many incidents have occurred in which engine thrust supplemented or replaced normal aircraft flight controls. In most of these cases, a crash has resulted, and more than 1100 lives have been lost. The NASA Dryden Flight Research Center has developed a propulsion-controlled aircraft (PCA) system in which computer-controlled engine thrust provides emergency flight control capability. Using this PCA system, an F-15 and an MD-11 airplane have been landed without using any flight controls. In simulations, C-17, B-757, and B-747 PCA systems have also been evaluated successfully. These tests used full-authority digital electronic control systems on the engines. Developing simpler PCA systems that can operate without full-authority engine control, thus allowing PCA technology to be installed on less capable airplanes or at lower cost, is also a desire. Studies have examined simplified ?PCA Ultralite? concepts in which thrust control is provided using an autothrottle system supplemented by manual differential throttle control. Some of these concepts have worked well. The PCA Ultralite study results are presented for simulation tests of MD-11, B-757, C-17, and B-747 aircraft.

Digital breast tomosynthesis plus synthesised images versus standard full-field digital mammography in population-based screening (TOSYMA): protocol of a randomised controlled trial.

PubMed

Weigel, Stefanie; Gerss, Joachim; Hense, Hans-Werner; Krischke, Miriam; Sommer, Alexander; Czwoydzinski, Jörg; Lenzen, Horst; Kerschke, Laura; Spieker, Karin; Dickmaenken, Stefanie; Baier, Sonja; Urban, Marc; Hecht, Gerold; Heidinger, Oliver; Kieschke, Joachim; Heindel, Walter

2018-05-14

Development of digital breast tomosynthesis (DBT) provides a technology that generates three-dimensional data sets, thus reducing the pitfalls of overlapping breast tissue. Observational studies suggest that the combination of two-dimensional (2D) digital mammography and DBT increases diagnostic accuracy. However, because of duplicate exposure, this comes at the cost of an augmented radiation dose. This undesired adverse impact can be avoided by using synthesised 2D images reconstructed from the DBT data (s2D).We designed a diagnostic superiority trial on a high level of evidence with the aim of providing a comparison of screening efficacy parameters resulting from DBT+s2D versus the current screening standard 2D full-field digital mammography (FFDM) in a multicentre and multivendor setting on the basis of the quality-controlled, population-based, biennial mammography screening programme in Germany. 80 000 women in the eligible age 50-69 years attending the routine mammography screening programme and willing to participate in the TOSYMA trial will be assigned by 1:1 randomisation to either the intervention arm (DBT+s2D) or the control arm (FFDM) during a 12-month recruitment period in screening units of North Rhine-Westphalia and Lower Saxony. State cancer registries will provide the follow-up of interval cancers.Primary endpoints are the detection rate of invasive breast cancers at screening examination and the cumulative incidence of interval cancers in the 2 years after a negative examination. Secondary endpoints are the detection rate of ductal carcinoma in situ and of tumour size T1, the recall rate for assessment, the positive predictive value of recall and the cumulative 12-month incidence of interval cancers. An adaptive statistical design with one interim analysis provides the option to modify the design. This protocol has been approved by the local medical ethical committee (2016-132-f-S). Results will be submitted to international peer-reviewed journals. NCT03377036; Pre-results. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

My Three Wishes for Digital Repositories. Building Digital Libraries

ERIC Educational Resources Information Center

Huwe, Terence K.

2005-01-01

In this column on digital repository management, the author defines three areas within the sphere of digital repositories that need work. The first two pertain to information architecture, while the last one pertains to taking action. The author's first "wish" is for top-notch library Web sites that act as a gateway to any sphere of knowledge. He…

21 CFR 892.1715 - Full-field digital mammography system.

Code of Federal Regulations, 2012 CFR

2012-04-01

... planar digital x-ray images of the entire breast. This generic type of device may include digital mammography acquisition software, full-field digital image receptor, acquisition workstation, automatic exposure control, image processing and reconstruction programs, patient and equipment supports, component...

21 CFR 892.1715 - Full-field digital mammography system.

Code of Federal Regulations, 2013 CFR

2013-04-01

... planar digital x-ray images of the entire breast. This generic type of device may include digital mammography acquisition software, full-field digital image receptor, acquisition workstation, automatic exposure control, image processing and reconstruction programs, patient and equipment supports, component...

21 CFR 892.1715 - Full-field digital mammography system.

Code of Federal Regulations, 2014 CFR

2014-04-01

... planar digital x-ray images of the entire breast. This generic type of device may include digital mammography acquisition software, full-field digital image receptor, acquisition workstation, automatic exposure control, image processing and reconstruction programs, patient and equipment supports, component...

21 CFR 892.1715 - Full-field digital mammography system.

Code of Federal Regulations, 2011 CFR

2011-04-01

... planar digital x-ray images of the entire breast. This generic type of device may include digital mammography acquisition software, full-field digital image receptor, acquisition workstation, automatic exposure control, image processing and reconstruction programs, patient and equipment supports, component...

Population-based mammography screening: comparison of screen-film and full-field digital mammography with soft-copy reading--Oslo I study.

PubMed

Skaane, Per; Young, Kari; Skjennald, Arnulf

2003-12-01

To compare screen-film and full-field digital mammography with soft-copy reading in a population-based screening program. Full-field digital and screen-film mammography were performed in 3,683 women aged 50-69 years. Two standard views of each breast were acquired with each modality. Images underwent independent double reading with use of a five-point rating scale for probability of cancer. Recall rates and positive predictive values were calculated. Cancer detection rates determined with both modalities were compared by using the McNemar test for paired proportions. Retrospective side-by-side analysis for conspicuity of cancers was performed by an external independent radiologist group with experience in both modalities. In 3,683 cases, 31 cancers were detected. Screen-film mammography depicted 28 (0.76%) malignancies, and full-field digital mammography depicted 23 (0.62%) malignancies. The difference between cancer detection rates was not significant (P =.23). The recall rate for full-field digital mammography (4.6%; 168 of 3,683 cases) was slightly higher than that for screen-film mammography (3.5%; 128 of 3,683 cases). The positive predictive value based on needle biopsy results was 46% for screen-film mammography and 39% for full-field digital mammography. Side-by-side image comparison for cancer conspicuity led to classification of 19 cancers as equal for probability of malignancy, six cancers as slightly better demonstrated at screen-film mammography, and six cancers as slightly better demonstrated at full-field digital mammography. There was no statistically significant difference in cancer detection rate between screen-film and full-field digital mammography. Cancer conspicuity was equal with both modalities. Full-field digital mammography with soft-copy reading is comparable to screen-film mammography in population-based screening.

Digitizing dissertations for an institutional repository: a process and cost analysis.

PubMed

Piorun, Mary; Palmer, Lisa A

2008-07-01

This paper describes the Lamar Soutter Library's process and costs associated with digitizing 300 doctoral dissertations for a newly implemented institutional repository at the University of Massachusetts Medical School. Project tasks included identifying metadata elements, obtaining and tracking permissions, converting the dissertations to an electronic format, and coordinating workflow between library departments. Each dissertation was scanned, reviewed for quality control, enhanced with a table of contents, processed through an optical character recognition function, and added to the institutional repository. Three hundred and twenty dissertations were digitized and added to the repository for a cost of $23,562, or $0.28 per page. Seventy-four percent of the authors who were contacted (n = 282) granted permission to digitize their dissertations. Processing time per title was 170 minutes, for a total processing time of 906 hours. In the first 17 months, full-text dissertations in the collection were downloaded 17,555 times. Locally digitizing dissertations or other scholarly works for inclusion in institutional repositories can be cost effective, especially if small, defined projects are chosen. A successful project serves as an excellent recruitment strategy for the institutional repository and helps libraries build new relationships. Challenges include workflow, cost, policy development, and copyright permissions.

Full-field acoustomammography using an acousto-optic sensor.

PubMed

Sandhu, J S; Schmidt, R A; La Rivière, P J

2009-06-01

In this Letter the authors introduce a wide-field transmission ultrasound approach to breast imaging based on the use of a large area acousto-optic (AO) sensor. Accompanied by a suitable acoustic source, such a detector could be mounted on a traditional mammography system and provide a mammographylike ultrasound projection image of the compressed breast in registration with the x-ray mammogram. The authors call the approach acoustography. The hope is that this additional information could improve the sensitivity and specificity of screening mammography. The AO sensor converts ultrasound directly into a visual image by virtue of the acousto-optic effect of the liquid crystal layer contained in the AO sensor. The image is captured with a digital video camera for processing, analysis, and storage. In this Letter, the authors perform a geometrical resolution analysis and also present images of a multimodality breast phantom imaged with both mammography and acoustography to demonstrate the feasibility of the approach. The geometric resolution analysis suggests that the technique could readily detect tumors of diameter of 3 mm using 8.5 MHz ultrasound, with smaller tumors detectable with higher frequency ultrasound, though depth penetration might then become a limiting factor. The preliminary phantom images show high contrast and compare favorably to digital mammograms of the same phantom. The authors have introduced and established, through phantom imaging, the feasibility of a full-field transmission ultrasound detector for breast imaging based on the use of a large area AO sensor. Of course variations in attenuation of connective, glandular, and fatty tissues will lead to images with more cluttered anatomical background than those of the phantom imaged here. Acoustic coupling to the mammographically compressed breast, particularly at the margins, will also have to be addressed.

Full-field acoustomammography using an acousto-optic sensor

PubMed Central

Sandhu, J. S.; Schmidt, R. A.; La Rivière, P. J.

2009-01-01

In this Letter the authors introduce a wide-field transmission ultrasound approach to breast imaging based on the use of a large area acousto-optic (AO) sensor. Accompanied by a suitable acoustic source, such a detector could be mounted on a traditional mammography system and provide a mammographylike ultrasound projection image of the compressed breast in registration with the x-ray mammogram. The authors call the approach acoustography. The hope is that this additional information could improve the sensitivity and specificity of screening mammography. The AO sensor converts ultrasound directly into a visual image by virtue of the acousto-optic effect of the liquid crystal layer contained in the AO sensor. The image is captured with a digital video camera for processing, analysis, and storage. In this Letter, the authors perform a geometrical resolution analysis and also present images of a multimodality breast phantom imaged with both mammography and acoustography to demonstrate the feasibility of the approach. The geometric resolution analysis suggests that the technique could readily detect tumors of diameter of 3 mm using 8.5 MHz ultrasound, with smaller tumors detectable with higher frequency ultrasound, though depth penetration might then become a limiting factor. The preliminary phantom images show high contrast and compare favorably to digital mammograms of the same phantom. The authors have introduced and established, through phantom imaging, the feasibility of a full-field transmission ultrasound detector for breast imaging based on the use of a large area AO sensor. Of course variations in attenuation of connective, glandular, and fatty tissues will lead to images with more cluttered anatomical background than those of the phantom imaged here. Acoustic coupling to the mammographically compressed breast, particularly at the margins, will also have to be addressed. PMID:19610321

"Get Up and Play!" From Simulation to Imitation in Digital Games

ERIC Educational Resources Information Center

Jenson, Jennifer; De Castell, Suzanne

2008-01-01

As professors working in faculties of education for the past ten years researching digital gameplay and the design and development of games for education, the authors have often been asked whether digital games are good or bad for children. The discourse of good/bad is a slippery one and the authors believe that digital games, like television,…

We Started a Digital Collection for next to Nothing and You Can Too

ERIC Educational Resources Information Center

Northam, Adam

2010-01-01

In this article, the author shares the successful digitization effort of their library and demonstrates how they were able to expand their first digital collection. The author started working at James G. Gee Library when the director asked him to try digital collections and was asked to study an open source collection management program called…

Digital Writing Practices: A Close Look at One Grade Three Author

ERIC Educational Resources Information Center

Kervin, Lisa; Mantei, Jessica

2016-01-01

This paper reports on the digital writing practices of a Grade Three primary school student as he used an iPad to plan, produce and share digital texts. The case study acknowledges that writing is undergoing a period of great change in many classrooms and works to show how a student author has interpreted and produced digital texts with new…

Road Tripping Down the Digital Preservation Highway, Part II: Road Signs, Billboards, and Rest Stops along the Way

ERIC Educational Resources Information Center

Colati, Jessica Branco; Colati, Gregory C.

2011-01-01

In this second of a two-part article on road tripping down the Digital Preservation Highway, the authors follow the continuing adventures of Peter Palmer, erstwhile librarian at Bellaluna University and manager of the library's and University's digital content, as he journeys down the Digital Preservation Highway. In the authors' last visit with…

Detection of Clinically Significant Retinopathy of Prematurity Using Wide-angle Digital Retinal Photography

PubMed Central

Chiang, Michael F.; Melia, Michele; Buffenn, Angela N.; Lambert, Scott R.; Recchia, Franco M.; Simpson, Jennifer L.; Yang, Michael B.

2013-01-01

Objective To evaluate the accuracy of detecting clinically significant retinopathy of prematurity (ROP) using wide-angle digital retinal photography. Methods Literature searches of PubMed and the Cochrane Library databases were conducted last on December 7, 2010, and yielded 414 unique citations. The authors assessed these 414 citations and marked 82 that potentially met the inclusion criteria. These 82 studies were reviewed in full text; 28 studies met inclusion criteria. The authors extracted from these studies information about study design, interventions, outcomes, and study quality. After data abstraction, 18 were excluded for study deficiencies or because they were superseded by a more recent publication. The methodologist reviewed the remaining 10 studies and assigned ratings of evidence quality; 7 studies were rated level I evidence and 3 studies were rated level III evidence. Results There is level I evidence from ≥5 studies demonstrating that digital retinal photography has high accuracy for detection of clinically significant ROP. Level III studies have reported high accuracy, without any detectable complications, from real-world operational programs intended to detect clinically significant ROP through remote site interpretation of wide-angle retinal photographs. Conclusions Wide-angle digital retinal photography has the potential to complement standard ROP care. It may provide advantages through objective documentation of clinical examination findings, improved recognition of disease progression by comparing previous photographs, and the creation of image libraries for education and research. Financial Disclosure(s) Proprietary or commercial disclosure may be found after the references. PMID:22541632

A Feasibility Study of Life-Extending Controls for Aircraft Turbine Engines Using a Generic Air Force Model (Preprint)

DTIC Science & Technology

2006-12-01

intelligent control algorithm embedded in the FADEC . This paper evaluates the LEC, based on critical components research, to demonstrate how an...control action, engine component life usage, and designing an intelligent control algorithm embedded in the FADEC . This paper evaluates the LEC, based on...simulation code for each simulator. One is typically configured to operate as a Full- Authority Digital Electronic Controller ( FADEC

Microcomputer Applications in Power and Propulsion Systems.

DTIC Science & Technology

1981-03-01

WAKERLY John "Error detecting codes self-checking circuits and applications ". The computer science library - NORTH HOLLAND NY A1 9-t FULL AUTHORITY DIGITAL...7 AD-A09 267 ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT-ETC F/6 9/2 MAR 81ICROCONPUTER APPLICATIONS IN POWER AND PROPULSION SYSTEMS.(U...SERIES No. 113 Microcomputer Applications in Power and Propulsion Systems This document has been approved for public releasea and sale, ift

Arc-An OAI Service Provider for Digital Library Federation; Kepler-An OAI Data/Service Provider for the Individual; Information Objects and Rights Management: A Mediation-Based Approach to DRM Interoperability; Automated Name Authority Control and Enhanced Searching in the Levy Collection; Renardus Project Developments and the Wider Digital Library Context.

ERIC Educational Resources Information Center

Liu, Xiaoming; Maly, Kurt; Zubair, Mohammad; Nelson, Michael L.; Erickson, John S.; DiLauro, Tim; Choudhury, G. Sayeed; Patton, Mark; Warner, James W.; Brown, Elizabeth W.; Heery, Rachel; Carpenter, Leona; Day, Michael

2001-01-01

Includes five articles that discuss the OAI (Open Archive Initiative), an interface between data providers and service providers; information objects and digital rights management interoperability; digitizing library collections, including automated name authority control, metadata, and text searching engines; and building digital library services…

Accuracy of Intraoral Digital Impressions for Whole Upper Jaws, Including Full Dentitions and Palatal Soft Tissues.

PubMed

Gan, Ning; Xiong, Yaoyang; Jiao, Ting

2016-01-01

Intraoral digital impressions have been stated to meet the clinical requirements for some teeth-supported restorations, though fewer evidences were proposed for larger scanning range. The aim of this study was to compare the accuracy (trueness and precision) of intraoral digital impressions for whole upper jaws, including the full dentitions and palatal soft tissues, as well as to determine the effect of different palatal vault height or arch width on accuracy of intraoral digital impressions. Thirty-two volunteers were divided into three groups according to the palatal vault height or arch width. Each volunteer received three scans with TRIOS intraoral scanner and one conventional impression of whole upper jaw. Three-dimensional (3D) images digitized from conventional gypsum casts by a laboratory scanner were chose as the reference models. All datasets were imported to a specific software program for 3D analysis by "best fit alignment" and "3D compare" process. Color-coded deviation maps showed qualitative visualization of the deviations. For the digital impressions for palatal soft tissues, trueness was (130.54±33.95)μm and precision was (55.26±11.21)μm. For the digital impressions for upper full dentitions, trueness was (80.01±17.78)μm and precision was (59.52±11.29)μm. Larger deviations were found between intraoral digital impressions and conventional impressions in the areas of palatal soft tissues than that in the areas of full dentitions (p<0.001). Precision of digital impressions for palatal soft tissues was slightly better than that for full dentitions (p = 0.049). There was no significant effect of palatal vault height on accuracy of digital impressions for palatal soft tissues (p>0.05), but arch width was found to have a significant effect on precision of intraoral digital impressions for full dentitions (p = 0.016). A linear correlation was found between arch width and precision of digital impressions for whole upper jaws (r = 0.326, p = 0.034 for palatal soft tissues and r = 0.485, p = 0.002 for full dentitions). It was feasible to use the intraoral scanner to obtain digital impressions for whole upper jaws. Wider dental arch contributed to lower precision of an intraoral digital impression. It should be confirmed in further studies that whether accuracy of digital impressions for whole upper jaws is clinically acceptable.

Managing Student Digital Distractions and Hyperconnectivity: Communication Strategies and Challenges for Professorial Authority

ERIC Educational Resources Information Center

Cheong, Pauline Hope; Shuter, Robert; Suwinyattichaiporn, Tara

2016-01-01

Recent debates on the use of technology in classrooms have highlighted the significance of regulating students' off-task and multitasking behaviors facilitated by digital media. This paper investigates the communication practices that constitute professorial authority to manage college students' digital distractions in classrooms. Findings from…

Ebook Sanity

ERIC Educational Resources Information Center

Griffey, Jason

2010-01-01

The author believes that publishers and authors will, in the digital age, benefit from freely sharing information, and that digital rights management (DRM) and other protection mechanisms are crazy. He has argued on behalf of libraries that ebooks and other digital content deserve the same First Sale rights that physical purchases have. But that…

Creating Digital Authors

ERIC Educational Resources Information Center

Zoch, Melody; Langston-DeMott, Brooke; Adams-Budde, Melissa

2014-01-01

Elementary students find themselves engaged and learning at a digital writing camp. The authors find that such elementary students usually have limited access to technology at home and school, and posit that teachers should do all they can to give them more access to and experience in digital composing. Students were motivated and learned to use…

Measurement of Full Field Strains in Filament Wound Composite Tubes Under Axial Compressive Loading by the Digital Image Correlation (DIC) Technique

DTIC Science & Technology

2013-05-01

Measurement of Full Field Strains in Filament Wound Composite Tubes Under Axial Compressive Loading by the Digital Image Correlation (DIC...of Full Field Strains in Filament Wound Composite Tubes Under Axial Compressive Loading by the Digital Image Correlation (DIC) Technique Todd C...Wound Composite Tubes Under Axial Compressive Loading by the Digital Image Correlation (DIC) Technique 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c

Large Scale Cross Drive Correlation Of Digital Media

DTIC Science & Technology

2016-03-01

NAVAL POSTGRADUATE SCHOOL MONTEREY, CALIFORNIA THESIS LARGE SCALE CROSS-DRIVE CORRELATION OF DIGITAL MEDIA by Joseph Van Bruaene March 2016 Thesis Co...CROSS-DRIVE CORRELATION OF DIGITAL MEDIA 5. FUNDING NUMBERS 6. AUTHOR(S) Joseph Van Bruaene 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Naval...the ability to make large scale cross-drive correlations among a large corpus of digital media becomes increasingly important. We propose a

Overview of the CCITT Recommendations for Synchronous Digital Hierarchy

DTIC Science & Technology

1991-10-01

Recommendations for8 Synchronous Digital Hierarchy DCK RAPPORTENCEN’TRiLEAD-A245 680 Frederikkazerne, Geb. 140EN 1111 iNTelefcron: 070-3166394/6395... Synchronous Digital Hierarchy author(s) P.P. Copeland institute TNO Physics and Electronics Laboratory date October 1991 NDRO no A90KLu635 no in pow...recent International Consultative Committee for Telephone and Telegraph (CCITT) Recommendations for the Synchronous Digital Hierarchy (SDH). The

Improvement on Main/backup Controller Switching Device of the Nozzle Throat Area Control System for a Turbofan Aero Engine

NASA Astrophysics Data System (ADS)

Li, Jie; Duan, Minghu; Yan, Maode; Li, Gang; Li, Xiaohui

2014-06-01

A full authority digital electronic controller (FADEC) equipped with a full authority hydro-mechanical backup controller (FAHMBC) is adopted as the nozzle throat area control system (NTACS) of a turbofan aero engine. In order to ensure the switching reliability of the main/backup controller, the nozzle throat area control switching valve was improved from three-way convex desktop slide valve to six-way convex desktop slide valve. Simulation results show that, if malfunctions of FAEDC occur and abnormal signals are outputted from FADEC, NTACS will be seriously influenced by the main/backup controller switching in several working states, while NTACS will not be influenced by using the improved nozzle throat area control switching valve, thus the controller switching process will become safer and smoother and the working reliability of this turbofan aero engine is improved by the controller switching device improvement.

US Coast Guard ASIST Probe Evaluation on a H-65 Dolphin

DTIC Science & Technology

2010-05-01

Turbomeca FADEC (Full Authority Digital Engine Controller) was used to adjust the rotor RPM to the desired value. Due to concerns of exciting resonance...inside the engine, the FADEC controller is designed to not allow continuous operation between 300 and 320 RPM so this rotor RPM range was not tested...the FADEC controller. All other personnel were located southwest of the aircraft to capture data and witness the event. US Coast Guard ASIST

Mobile measurement setup according to IEC 62220-1-2 for DQE determination on digital mammography systems

NASA Astrophysics Data System (ADS)

Greiter, Matthias B.; Hoeschen, Christoph

2010-04-01

The international standard IEC 62220-1-2 defines the measurement procedure for determination of the detective quantum efficiency (DQE) of digital x-ray imaging devices used in mammography. A mobile setup complying to this standard and adaptable to most current systems was constructed in the Helmholtz Zentrum München to allow for an objective technical comparison of current full field digital mammography units employed in mammography screening in Germany. This article demonstrates the setup's capabilities with a focus on the measurement uncertainties of all quantities contributing to DQE measurements. Evaluation of uncertainties encompasses results from measurements on a Sectra Microdose Mammography in clinical use, as well as on a prototype of a Fujifilm Amulet system at various radiation qualities. Both systems have a high spatial resolution of 50 μm × 50 μm. The modulation transfer function (MTF), noise power spectrum (NPS) and DQE of the Sectra MDM are presented in comparison to results previously published by other authors.

Streamlining Metadata and Data Management for Evolving Digital Libraries

NASA Astrophysics Data System (ADS)

Clark, D.; Miller, S. P.; Peckman, U.; Smith, J.; Aerni, S.; Helly, J.; Sutton, D.; Chase, A.

2003-12-01

What began two years ago as an effort to stabilize the Scripps Institution of Oceanography (SIO) data archives from more than 700 cruises going back 50 years, has now become the operational fully-searchable "SIOExplorer" digital library, complete with thousands of historic photographs, images, maps, full text documents, binary data files, and 3D visualization experiences, totaling nearly 2 terabytes of digital content. Coping with data diversity and complexity has proven to be more challenging than dealing with large volumes of digital data. SIOExplorer has been built with scalability in mind, so that the addition of new data types and entire new collections may be accomplished with ease. It is a federated system, currently interoperating with three independent data-publishing authorities, each responsible for their own quality control, metadata specifications, and content selection. The IT architecture implemented at the San Diego Supercomputer Center (SDSC) streamlines the integration of additional projects in other disciplines with a suite of metadata management and collection building tools for "arbitrary digital objects." Metadata are automatically harvested from data files into domain-specific metadata blocks, and mapped into various specification standards as needed. Metadata can be browsed and objects can be viewed onscreen or downloaded for further analysis, with automatic proprietary-hold request management.

Digitizing Dissertations for an Institutional Repository: A Process and Cost Analysis*

PubMed Central

Piorun, Mary; Palmer, Lisa A.

2008-01-01

Objective: This paper describes the Lamar Soutter Library's process and costs associated with digitizing 300 doctoral dissertations for a newly implemented institutional repository at the University of Massachusetts Medical School. Methodology: Project tasks included identifying metadata elements, obtaining and tracking permissions, converting the dissertations to an electronic format, and coordinating workflow between library departments. Each dissertation was scanned, reviewed for quality control, enhanced with a table of contents, processed through an optical character recognition function, and added to the institutional repository. Results: Three hundred and twenty dissertations were digitized and added to the repository for a cost of $23,562, or $0.28 per page. Seventy-four percent of the authors who were contacted (n = 282) granted permission to digitize their dissertations. Processing time per title was 170 minutes, for a total processing time of 906 hours. In the first 17 months, full-text dissertations in the collection were downloaded 17,555 times. Conclusion: Locally digitizing dissertations or other scholarly works for inclusion in institutional repositories can be cost effective, especially if small, defined projects are chosen. A successful project serves as an excellent recruitment strategy for the institutional repository and helps libraries build new relationships. Challenges include workflow, cost, policy development, and copyright permissions. PMID:18654648

Accuracy of Intraoral Digital Impressions for Whole Upper Jaws, Including Full Dentitions and Palatal Soft Tissues

PubMed Central

Gan, Ning; Xiong, Yaoyang; Jiao, Ting

2016-01-01

Intraoral digital impressions have been stated to meet the clinical requirements for some teeth-supported restorations, though fewer evidences were proposed for larger scanning range. The aim of this study was to compare the accuracy (trueness and precision) of intraoral digital impressions for whole upper jaws, including the full dentitions and palatal soft tissues, as well as to determine the effect of different palatal vault height or arch width on accuracy of intraoral digital impressions. Thirty-two volunteers were divided into three groups according to the palatal vault height or arch width. Each volunteer received three scans with TRIOS intraoral scanner and one conventional impression of whole upper jaw. Three-dimensional (3D) images digitized from conventional gypsum casts by a laboratory scanner were chose as the reference models. All datasets were imported to a specific software program for 3D analysis by "best fit alignment" and "3D compare" process. Color-coded deviation maps showed qualitative visualization of the deviations. For the digital impressions for palatal soft tissues, trueness was (130.54±33.95)μm and precision was (55.26±11.21)μm. For the digital impressions for upper full dentitions, trueness was (80.01±17.78)μm and precision was (59.52±11.29)μm. Larger deviations were found between intraoral digital impressions and conventional impressions in the areas of palatal soft tissues than that in the areas of full dentitions (p<0.001). Precision of digital impressions for palatal soft tissues was slightly better than that for full dentitions (p = 0.049). There was no significant effect of palatal vault height on accuracy of digital impressions for palatal soft tissues (p>0.05), but arch width was found to have a significant effect on precision of intraoral digital impressions for full dentitions (p = 0.016). A linear correlation was found between arch width and precision of digital impressions for whole upper jaws (r = 0.326, p = 0.034 for palatal soft tissues and r = 0.485, p = 0.002 for full dentitions). It was feasible to use the intraoral scanner to obtain digital impressions for whole upper jaws. Wider dental arch contributed to lower precision of an intraoral digital impression. It should be confirmed in further studies that whether accuracy of digital impressions for whole upper jaws is clinically acceptable. PMID:27383409

Evaluating Digital Authoring Tools

ERIC Educational Resources Information Center

Wilde, Russ

2004-01-01

As the quality of authoring software increases, online course developers become less reliant on proprietary learning management systems, and develop skills in the design of original, in-house materials and the delivery platforms for them. This report examines the capabilities of digital authoring software tools for the development of learning…

A Reflection: Trials in Using Digital Storytelling Effectively with the Gifted

ERIC Educational Resources Information Center

Kieler, Lynda

2010-01-01

In this article, the author shares her experience of using digital storytelling in her class of gifted learners and discusses the benefits it has for both students and teachers. Technology is becoming an integral part of the educational realm. In an effort to blend technology with education, the author took on the challenge of digital storytelling…

English Teaching and New Literacies Pedagogy: Interpreting and Authoring Digital Multimedia Narratives. New Literacies and Digital Epistemologies. Volume 61

ERIC Educational Resources Information Center

Unsworth, Len, Ed.; Thomas, Angela, Ed.

2014-01-01

"English Teaching and New Literacies Pedagogy: Interpreting and Authoring Digital Multimedia Narratives" is about the fusion of media and narrative, and explores theoretical and practical dimensions of young people's engagement with contemporary forms of text. It showcases a range of critical interpretative approaches for integrating…

The Next Stage: Moving from Isolated Digital Collections to Interoperable Digital Libraries.

ERIC Educational Resources Information Center

Besser, Howard

2002-01-01

Presents a conceptual framework for digital library development and discusses how to move from isolated digital collections to interoperable digital libraries. Topics include a history of digital libraries; user-centered architecture; stages of technological development; standards, including metadata; and best practices. (Author/LRW)

An Appraisal of a Number of Power Assessment Procedures being Proposed for Use in Chinook-Lycoming T55 Engine

DTIC Science & Technology

1989-02-01

WHICH WILL NOT BE ADDED TO THE DISTIS DATA UNLESS SPECIFICA.LLY REQUESTED. 16. ABSTRACT (CONT.) control ( FADEC ) to the T55-Lll engine. This latter...the Power Assurance Test (PAT) proposed in conjunction with the retrofitting of a full authority digital engine control ( FADEC ) to the T55-Lll engine...Research Laboratory, P.Q. Bcx 4331, felbourne, Victoria, 3001, A..sLralia CONTENTS Page NOMENCLATURE 1.0 INTRODUCTION ........................ 1 2.0 FADEC

An Analysis of Coast Guard HH-65 Engine Reliability: A Comparison of Malfunctions to Component Removals

DTIC Science & Technology

2004-03-01

developed while the HH-65 was still in the developmental phase and a Full Authority Digital Engine Control ( FADEC ) system (Chisom, 1984:189). In 1982...Lucas Aerospace developed a FADEC system for the HH-65. While test flights of this system were successful in demonstrating the feasibility of the...Lucas FADEC for the HH-65, there were problems associated with a lack of redundancy of the Engine Control Computer software and lack of cockpit

Effects of Transient Power Extraction on an Integrated Hardware-in-the-Loop Aircraft/Propulsion/Power System

DTIC Science & Technology

2008-11-01

Simulations of an engine and its Full Authority Digital Engine Control ( FADEC ), along with a 6 degree-of-freedom (6DoF) airframe dynamics model and...as needed. In its current configuration, the generic turbine engine model’s FADEC is included in the same simulation and runs primarily on 2 a...back to the engine. As mentioned previously, the FADEC and engine are combined into one simulation and are collectively referred to as “the engine

Medical devices; radiology devices; reclassification of full-field digital mammography system. Final rule.

PubMed

2010-11-05

The Food and Drug Administration (FDA) is announcing the reclassification of the full-field digital mammography (FFDM) system from class III (premarket approval) to class II (special controls). The device type is intended to produce planar digital x-ray images of the entire breast; this generic type of device may include digital mammography acquisition software, full-field digital image receptor, acquisition workstation, automatic exposure control, image processing and reconstruction programs, patient and equipment supports, component parts, and accessories. The special control that will apply to the device is the guidance document entitled "Class II Special Controls Guidance Document: Full-Field Digital Mammography System." FDA is reclassifying the device into class II (special controls) because general controls along with special controls will provide a reasonable assurance of safety and effectiveness of the device. Elsewhere in this issue of the Federal Register, FDA is announcing the availability of the guidance document that will serve as the special control for this device.

Experimental study of digital image processing techniques for LANDSAT data

NASA Technical Reports Server (NTRS)

Rifman, S. S. (Principal Investigator); Allendoerfer, W. B.; Caron, R. H.; Pemberton, L. J.; Mckinnon, D. M.; Polanski, G.; Simon, K. W.

1976-01-01

The author has identified the following significant results. Results are reported for: (1) subscene registration, (2) full scene rectification and registration, (3) resampling techniques, (4) and ground control point (GCP) extraction. Subscenes (354 pixels x 234 lines) were registered to approximately 1/4 pixel accuracy and evaluated by change detection imagery for three cases: (1) bulk data registration, (2) precision correction of a reference subscene using GCP data, and (3) independently precision processed subscenes. Full scene rectification and registration results were evaluated by using a correlation technique to measure registration errors of 0.3 pixel rms thoughout the full scene. Resampling evaluations of nearest neighbor and TRW cubic convolution processed data included change detection imagery and feature classification. Resampled data were also evaluated for an MSS scene containing specular solar reflections.

The (digital) natives are restless: designing and implementing an interactive digital media assignment.

PubMed

Voge, Catherine; Hirvela, Kari; Jarzemsky, Paula

2012-01-01

To create an opportunity for students to connect with the Quality and Safety Education for Nurses competencies and demonstrate learning via knowledge transference, the authors piloted a digital media assignment. Students worked in small groups to create an unfolding patient care scenario with embedded decision points, using presentation software. The authors discuss the assignment and its outcomes.

Digital Refractometry of Piezoelectric Crystalline Media

DTIC Science & Technology

1988-11-01

Research and Development Technical Report SLCET-TR-87-0727-1 III DIGITAL REFRACTOMETRY OF PIEZOELECTRIC CRYSTALLINE MEDIA CD Dr. Edward Collett...1L 1 DA313485 11. TITLE (include Security Classification) DIGITAL REFRACTOMETRY OF PIEZOELECTRIC CRYSTALLINE MEDIA (U) 12. PERSONAL AUTHOR(S) Dr...GROUP SUB-GROUP Lasers; quartz; dielectrics; permittivity; refractometry 9 U-1optics; millimeter waves; microwaves; crystals. ,𔄃. ABSTRACT (Continue on

A Methodology and Implementation for Annotating Digital Images for Context-appropriate Use in an Academic Health Care Environment

PubMed Central

Goede, Patricia A.; Lauman, Jason R.; Cochella, Christopher; Katzman, Gregory L.; Morton, David A.; Albertine, Kurt H.

2004-01-01

Use of digital medical images has become common over the last several years, coincident with the release of inexpensive, mega-pixel quality digital cameras and the transition to digital radiology operation by hospitals. One problem that clinicians, medical educators, and basic scientists encounter when handling images is the difficulty of using business and graphic arts commercial-off-the-shelf (COTS) software in multicontext authoring and interactive teaching environments. The authors investigated and developed software-supported methodologies to help clinicians, medical educators, and basic scientists become more efficient and effective in their digital imaging environments. The software that the authors developed provides the ability to annotate images based on a multispecialty methodology for annotation and visual knowledge representation. This annotation methodology is designed by consensus, with contributions from the authors and physicians, medical educators, and basic scientists in the Departments of Radiology, Neurobiology and Anatomy, Dermatology, and Ophthalmology at the University of Utah. The annotation methodology functions as a foundation for creating, using, reusing, and extending dynamic annotations in a context-appropriate, interactive digital environment. The annotation methodology supports the authoring process as well as output and presentation mechanisms. The annotation methodology is the foundation for a Windows implementation that allows annotated elements to be represented as structured eXtensible Markup Language and stored separate from the image(s). PMID:14527971

Digital mammography: more microcalcifications, more columnar cell lesions without atypia.

PubMed

Verschuur-Maes, Anoek H J; van Gils, Carla H; van den Bosch, Maurice A A J; De Bruin, Peter C; van Diest, Paul J

2011-09-01

The incidence of columnar cell lesions in breast core needle biopsies since full-field digital mammography in comparison with screen-filmed mammography was analyzed. As tiny microcalcifications characterize columnar cell lesions at mammography, we hypothesized that more columnar cell lesions are diagnosed since full-field digital mammography due to its higher sensitivity for microcalcifications. In all, 3437 breast core needle biopsies performed in three hospitals and resulting from in total 55 159 mammographies were revised: 1424 taken in the screen-filmed mammography and 2013 in the full-field digital mammography period. Between the screen-filmed mammography and full-field digital mammography periods, we compared the proportion of mammographies that led to core needle biopsies, the mammographic indication for core needle biopsies (density, microcalcifications, or both) and the proportion of columnar cell lesions with or without atypia. The columnar cell lesions were graded according to Schnitt, and we included atypical ductal hyperplasia arising in the context of columnar cell lesions. Proportions were compared using χ(2) tests and prevalence ratios were adjusted for age and hospital. We found that more core needle biopsies per mammogram were taken in the full-field digital mammography period (7.6%) compared with the screen-filmed mammography period (5.0%, P<0.0001). Microcalcifications were more often diagnosed with full-field digital mammography than with screen-filmed mammography (adjusted prevalence ratio: 1.14, confidence interval 95%: 1.01-1.28). Core needle biopsies from the full-field digital mammography era showed more columnar cell lesions (10.8%) than those from the screen-filmed mammography era (4.9%; adjusted prevalence ratio: 1.93, confidence interval 95%: 1.48-2.51), particularly due to more columnar cell lesions without atypia (8.2% respectively 2.8%) while the proportion of columnar cell lesions with atypia remained nearly constant (2.0 vs 2.6%). In conclusion, since the implementation of full-field digital mammography, more microcalcifications are seen at mammography, more often resulting in core needle biopsies, which especially yields more columnar cell lesions without atypia.

Creating Spaces for Students to Position Themselves as Writers through Experiences with Digital Writing

ERIC Educational Resources Information Center

Zoch, Melody; Adams-Budde, Melissa; Langston-Demott, Brooke

2016-01-01

The authors present the experiences of Wyatt, a nine-year-old whose mother described him as a struggling writer, in a summer digital writing camp. The authors consider how Wyatt was positioned as a writer at camp and how this may have differed from his experiences at school. They found that for Wyatt, being able to compose with digital tools along…

Avoiding the Digital Abyss: Getting Started in the Classroom with YouTube, Digital Stories, and Blogs

ERIC Educational Resources Information Center

Mullen, Rebecca; Wedwick, Linda

2008-01-01

In this article, the authors discuss a rural middle school teacher's use of YouTube, digital stories, and blogs in a language arts curriculum. The authors also share the voices of middle school students as they learn through this technology in the classroom. Although a wide variety of technology integration exists in this middle school language…

Tracking clinical use of personal digital assistant reference resources.

PubMed

Pattillo, Robin E; Brewer, Marquette; Smith, Cheryl M

2007-01-01

Mechanisms are needed to evaluate the effectiveness of ever-increasing technological resources for nursing student use. The authors tracked the use of personal digital assistants versus textbook resources by junior-level baccalaureate nursing students throughout 1 semester. The authors discuss the results of that activity and provide a starting point for the evaluation of the use of personal digital assistants by nursing students.

Preliminary soft-tissue distraction versus checkrein ligament release after fasciectomy in the treatment of dupuytren proximal interphalangeal joint contractures.

PubMed

Craft, Randall O; Smith, Anthony A; Coakley, Brandon; Casey, William J; Rebecca, Alanna M; Duncan, Scott F M

2011-11-01

Checkrein ligament release for treatment of proximal interphalangeal joint Dupuytren contractures does not address the shortened arteries or deficient skin. The Digit Widget uses soft-tissue distraction to overcome these issues. This study compares checkrein ligament release after fasciectomy versus preliminary soft-tissue distraction, followed by operative release, for treatment of proximal interphalangeal joint Dupuytren contractures. The authors compared operative and postoperative characteristics of patients treated with either fasciectomy plus checkrein ligament release or Digit Widget distraction between 2001 and 2008. Seventeen patients (20 digits) underwent ligament release (mean contracture, 55.9 degrees); six of these 20 were reoperations. Thirteen patients (17 digits) underwent distraction (mean contracture, 67.6 degrees); 10 of 17 were reoperations. The 20 digits treated with fasciectomy plus ligament release had an average extension improvement of 31.4 degrees (range, -4 to 70 degrees). Digits treated with distraction had an average extension improvement of 53.4 degrees (range, 30 to 75 degrees) (p<0.001 versus ligament release). Three digits treated with distraction improved to full proximal interphalangeal extension. Initial contractures of 60 degrees or less treated by ligament release (n=12) or distraction (n=7) improved by means of 28.8 degrees and 47.7 degrees, respectively (p=0.048). Contractures greater than 60 degrees treated by ligament release (n=8) or distraction (n=10) improved by means of 35.3 degrees and 57.3 degrees, respectively (p=0.02). Soft-tissue distraction followed by operative release showed greater correction than Dupuytren fasciectomy plus checkrein ligament release. Therapeutic, III.

Digital image processing: a primer for JVIR authors and readers: Part 3: Digital image editing.

PubMed

LaBerge, Jeanne M; Andriole, Katherine P

2003-12-01

This is the final installment of a three-part series on digital image processing intended to prepare authors for online submission of manuscripts. In the first two articles of the series, the fundamentals of digital image architecture were reviewed and methods of importing images to the computer desktop were described. In this article, techniques are presented for editing images in preparation for online submission. A step-by-step guide to basic editing with use of Adobe Photoshop is provided and the ethical implications of this activity are explored.

Digital Storytelling as an Interactive Digital Media Context

ERIC Educational Resources Information Center

Anderson, Kate T.; Chua, Puay Hoe

2010-01-01

Digital storytelling involves the creation of short, personal narratives combining images, sounds, and text in a multimedia computer-based platform. In education, digital storytelling has been used to foster learning in formal and informal spaces worldwide. The authors offer a critical discussion of claims about digital storytelling's usefulness…

Whole-slide imaging in pathology: the potential impact on PACS

NASA Astrophysics Data System (ADS)

Horii, Steven C.

2007-03-01

Pathology, the medical specialty charged with the evaluation of macroscopic and microscopic aspects of disease, is increasingly turning to digital imaging. While the conventional tissue blocks and glass slides form an "archive" that pathology departments must maintain, digital images acquired from microscopes or digital slide scanners are increasingly used for telepathology, consultation, and intra-facility communication. Since many healthcare facilities are moving to "enterprise PACS" with departments in addition to radiology using the infrastructure of such systems, some understanding of the potential of whole-slide digital images is important. Network and storage designers, in particular, are very likely to be impacted if a significant number of such images are to be moved on, or stored (even temporarily) in, enterprise PACS. As an example, a typical commercial whole-slide imaging system typically generates 15 gigabytes per slide scanned (per focal plane). Many of these whole-slide scanners have a throughput of 1000 slides per day. If that full capacity is used and all the resulting digital data is moved to the enterprise PACS, it amounts to 15 terabytes per day; the amount of data a large radiology department might generate in a year or two. This paper will review both the clinical scenarios of whole-slide imaging as well as the resulting data volumes. The author will emphasize the potential PACS infrastructure impact of such huge data volumes.

What are the current challenges of managing cancer pain and could digital technologies help?

PubMed

Adam, Rosalind; de Bruin, Marijn; Burton, Christopher David; Bond, Christine M; Giatsi Clausen, Maria; Murchie, Peter

2018-06-01

Pain remains a problem for people with cancer despite effective treatments being available. We aimed to explore current pain management strategies used by patients, caregivers and professionals and to investigate opportunities for digital technologies to enhance cancer pain management. A qualitative study comprising semistructured interviews and focus groups. Patients with cancer pain, their caregivers and health professionals from Northeast Scotland were recruited from a purposive sample of general practices. Professionals were recruited from regional networks. Fifty one participants took part in 33 interviews (eight patients alone, six patient/caregiver dyads and 19 professionals) and two focus groups (12 professionals). Living with cancer was hard work for patients and caregivers and comparable to a 'full-time job'. Patients had personal goals which involved controlling pain intensity and balancing this with analgesic use, side effects, overall symptom burden and social/physical activities.Digital technologies were embraced by most patients, and made living life with advanced cancer easier and richer (eg, video calls with family). Technology was underutilised for pain and symptom management. There were suggestions that technology could support self-monitoring and communicating problems to professionals, but patients and professionals were concerned about technological monitoring adding to the work of managing illness. Cancer pain management takes place in the context of multiple, sometimes competing personal goals. It is possible that technology could be used to help patients share individual symptom experiences and goals, thus enhancing tailored care. The challenge is for digital solutions to add value without adding undue burden. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

47 CFR 73.6019 - Digital Class A TV station protection of low power TV, TV translator, digital low power TV and...

Code of Federal Regulations, 2010 CFR

2010-10-01

... power TV, TV translator, digital low power TV and digital TV translator stations. 73.6019 Section 73... low power TV, TV translator, digital low power TV and digital TV translator stations. An application... A TV station will not be accepted if it fails to protect authorized low power TV, TV translator...

A Historical Perspective on Digital Hearing Aids: How Digital Technology Has Changed Modern Hearing Aids

PubMed Central

Levitt, Harry

2007-01-01

This article provides the author's perspective on the development of digital hearing aids and how digital signal processing approaches have led to changes in hearing aid design. Major landmarks in the evolution of digital technology are identified, and their impact on the development of digital hearing aids is discussed. Differences between analog and digital approaches to signal processing in hearing aids are identified. PMID:17301334

Advanced X-Ray Inspection of Reinforced Carbon Composite Materials on the Orbiter Leading Edge Structural Subsystem (LESS)

NASA Technical Reports Server (NTRS)

Hernandez, Jose M.; Berry, Robert F.; Osborn, Robin; Bueno, Clifford; Osterlitz, Mark; Mills, Richard; Morris, Philip; Phalen, Robert; McNab, Jim; Thibodeaux, Tahanie;

Modernizing engine displays

NASA Technical Reports Server (NTRS)

Schneider, E. T.; Enevoldson, E. K.

1984-01-01

The introduction of electronic fuel control to modern turbine engines has a number of advantages, which are related to an increase in engine performance and to a reduction or elimination of the problems associated with high angle of attack engine operation from the surface to 50,000 feet. If the appropriate engine display devices are available to the pilot, the fuel control system can provide a great amount of information. Some of the wealth of information available from modern fuel controls are discussed in this paper. The considered electronic engine control systems in their most recent forms are known as the Full Authority Digital Engine Control (FADEC) and the Digital Electronic Engine Control (DEEC). Attention is given to some details regarding the control systems, typical engine problems, the solution of problems with the aid of displays, engine displays in normal operation, an example display format, a multipage format, flight strategies, and hardware considerations.

Flight testing the Digital Electronic Engine Control (DEEC) A unique management experience

NASA Technical Reports Server (NTRS)

Putnam, T. W.; Burcham, F. W., Jr.; Kock, B. M.

1983-01-01

The concept for the DEEC had its origin in the early 1970s. At that time it was recognized that the F100 engine performance, operability, reliability, and cost could be substantially improved by replacing the original mechanical/supervisory electronic control system with a full-authority digital control system. By 1978, the engine manufacturer had designed and initiated the procurement of flight-qualified control system hardware. As a precursor to an integrated controls program, a flight evaluation of the DEEC system on the F-15 aircraft was proposed. Questions regarding the management of the DEEC flight evaluation program are discussed along with the program elements, the technical results of the F-15 evaluation, and the impact of the flight evaluation on after-burning turbofan controls technology and its use in and application to military aircraft. The lessons learned through the conduct of the program are discussed.

Digital Data Dubbing Capability.

DTIC Science & Technology

1987-10-13

DUBBING CAPABILITY 12. PERSONAL AUTHOR(S) WILLIAM B. BRIERLY...NOTATION 17. COSATI CODES 18. SUBJECT TERMS (Continue on reverse if necessary and identify by block number) FIELD GROUP SUB-GROUP DIGITAL DATA DUBBING ...34 ."*~ " ** "." ...- ,.-...." . . " ." .. ." " "."." .. " ","" ."e"....". "’"’ .*.." . """ ’. "."’,"’."’ TENTH ANNUAL ARMY TOPO CONFERENCE, OCTOBER 1987 DIGITAL DATA DUBBING

21 CFR 1311.20 - Coordinators for CSOS digital certificate holders.

Code of Federal Regulations, 2011 CFR

2011-04-01

... digital certificates issued under that registrant's DEA registration. While the coordinator will be the main point of contact between one or more DEA registered locations and the CSOS Certification Authority... application that the DEA Certification Authority provides and submit the following: (1) Two copies of...

Digital Ink and Notetaking

ERIC Educational Resources Information Center

Colwell, Kenneth E.

2004-01-01

Tablet PCs and graphics tablets employ digital ink technology. In this paper the author introduces the reader to digital ink technology with the aim of promoting its use in various instructional or training settings, with the goal of improving instructor-learner dialogue and student learning. The potential of digital ink for improved instructional…

Breaking Radical Monopolies: Towards Political Economy of Digital Literacy

ERIC Educational Resources Information Center

Vaden, Tere; Suoranta, Juha

2004-01-01

In this article, the authors argue for a leap from a "weak" digital literacy (skills of interpretation and strategies of reception) to strong digital literacy (authorship and autonomous skills and capacities). Strong digital literacy implies politico-structural analysis of the information societies to come. Given the current forms of economic…

Science 2.0: When Students Become Digital Citizens

ERIC Educational Resources Information Center

Smith, Ben; Mader, Jared

2016-01-01

Modern science learning requires the use of digital tools and a shift in teaching philosophy and pedagogy. The backbone to this shift rests in a yet unaddressed skill: digital citizenship. The authors discuss the Digital Citizen standard where "students (will) recognize the rights, responsibilities, and opportunities of living, learning, and…

Bridging the Digital Divide

ERIC Educational Resources Information Center

Clarke, Alan; Milner, Helen; Killer, Terry; Dixon, Genny

2008-01-01

As the Government publishes its action plan for consultation on digital inclusion, the authors consider some of the challenges and opportunities for the delivery of digital inclusion. Clarke argues that digital inclusion requires more than access to technology or the skills to use it effectively, it demands information and media literacy. Milner…

The Challenge of Acquisitions in the Digital Age

ERIC Educational Resources Information Center

Whittaker, Martha

2008-01-01

People are now beginning to appreciate that acquisitions in the digital world is different. In addition to business acumen and accounting knowledge, a digital-age acquisitions librarian needs to understand scholarly communication and the emerging business models of digital publishing. In this article, the author discusses the challenges and the…

Accessing Digital Libraries: A Study of ARL Members' Digital Projects

ERIC Educational Resources Information Center

Kahl, Chad M.; Williams, Sarah C.

2006-01-01

To ensure efficient access to and integrated searching capabilities for their institution's new digital library projects, the authors studied Web sites of the Association of Research Libraries' (ARL) 111 academic, English-language libraries. Data were gathered on 1117 digital projects, noting library Web site and project access, metadata, and…

Digital Initiatives and Metadata Use in Thailand

ERIC Educational Resources Information Center

SuKantarat, Wichada

2008-01-01

Purpose: This paper aims to provide information about various digital initiatives in libraries in Thailand and especially use of Dublin Core metadata in cataloguing digitized objects in academic and government digital databases. Design/methodology/approach: The author began researching metadata use in Thailand in 2003 and 2004 while on sabbatical…

Mobile Learning Devices. Essentials for Principals

ERIC Educational Resources Information Center

Rogers, Kipp D.

2011-01-01

In "Mobile Learning Devices," the author helps educators confront and overcome their fears and doubts about using mobile learning devices (MLDs) such as cell phones, personal digital assistants, MP3 players, handheld games, digital audio players, and laptops in classrooms. School policies that ban such tools are outdated, the author suggests;…

Digital Coding and the Self-Proving Message

ERIC Educational Resources Information Center

Dettering, Richard

1971-01-01

Author suggests that digital Communication", which relies on arbitrary coding elements, like the phones of speech," overshadows the importance of the analogic symbolism people use more extensively than realized. Non-verbal messages can be more convincing than verbal and can be used to predict patterns of future behavior. (Author/PD)

Introduction: digital games as a context for cognitive development, learning, and developmental research.

PubMed

Blumberg, Fran C; Fisch, Shalom M

2013-01-01

The authors present reasons why developmental psychologists should care about children's and adolescents' digital game play. These reasons may be identified as: a) digital game play is an integral aspect of children's and adolescents' lives; b) digital game play contributes to learning and cognitive development; and c) developmental research has the potential to contribute to effective educational game design. The authors expand on these reasons with the goal of introducing or reintroducing to developmental psychologists a rich and very relevant context in which to examine children's and adolescents' applied cognitive development. Copyright © 2013 Wiley Periodicals, Inc., A Wiley Company.

A new method for assessing the accuracy of full arch impressions in patients.

PubMed

Kuhr, F; Schmidt, A; Rehmann, P; Wöstmann, B

2016-12-01

To evaluate a new method of measuring the real deviation (trueness) of full arch impressions intraorally and to investigate the trueness of digital full arch impressions in comparison to a conventional impression procedure in clinical use. Four metal spheres were fixed with composite using a metal application aid to the lower teeth of 50 test subjects as reference structures. One conventional impression (Impregum Penta Soft) with subsequent type-IV gypsum model casting (CI) and three different digital impressions were performed in the lower jaw of each test person with the following intraoral scanners: Sirona CEREC Omnicam (OC), 3M True Definition (TD), Heraeus Cara TRIOS (cT). The digital and conventional (gypsum) models were analyzed relative to the spheres. Linear distance and angle measurements between the spheres, as well as digital superimpositions of the spheres with the reference data set were executed. With regard to the distance measurements, CI showed the smallest deviations followed by intraoral scanners TD, cT and OC. A digital superimposition procedure yielded the same order for the outcomes: CI (15±4μm), TD (23±9μm), cT (37±14μm), OC (214±38μm). Angle measurements revealed the smallest deviation for TD (0.06°±0,07°) followed by CI (0.07°±0.07°), cT (0.13°±0.15°) and OC (0.28°±0.21°). The new measuring method is suitable for measuring the dimensional accuracy of full arch impressions intraorally. CI is still significantly more accurate than full arch scans with intraoral scanners in clinical use. Conventional full arch impressions with polyether impression materials are still more accurate than full arch digital impressions. Digital impression systems using powder application and active wavefront sampling technology achieve the most accurate results in comparison to other intraoral scanning systems (DRKS-ID: DRKS00009360, German Clinical Trials Register). Copyright © 2016 Elsevier Ltd. All rights reserved.

Zero Feet Away: The Digital Geography of Gay Social Media.

PubMed

Roth, Yoel

2016-01-01

For this contribution to the "Cartographies" section of the special issue on "Mapping Queer Bioethics," the author focuses on the terrains of digital media, geosocial networking, and sexually based social media in LGBT communities. Addressing the communal potentials and ethical complications of geosocial connections made possible by such sexually based social media, the author asks whether digital forms of cartography via applications such as Grindr and Scruff simplify, complicate, or merely expose historically longstanding notions of queer interconnectivity.

The Correlation Between Actual Uncuffed Endotracheal Tube Size, the Diameter of the Distal Digit of the Little Finger and the Penlington Formula

DTIC Science & Technology

1990-01-01

Uncuffed Endotracheal Tube Size, the Diameter of the Distal Digit of the Little Finger and the Penlington Formula 12. PERSONAL AUTHOR(S) Roy H. Fukuoka 13a...BETWEEN ACTUAL UNCUFFED ENDOTRACHEAL TUBE SIZE, THE DIAMETER OF THE DISTAL DIGIT OF THE LITTLE FINGER AND THE PENLINGTON FORMULA By Roy H. Fukuoka May... PENLINGTON FORMULA A THESIS PROPOSAL Presented to the Department of Nursing California State University, Long Beach In Partial Fulfillment of the

In-vitro evaluation of the accuracy of conventional and digital methods of obtaining full-arch dental impressions.

PubMed

Ender, Andreas; Mehl, Albert

2015-01-01

To investigate the accuracy of conventional and digital impression methods used to obtain full-arch impressions by using an in-vitro reference model. Eight different conventional (polyether, POE; vinylsiloxanether, VSE; direct scannable vinylsiloxanether, VSES; and irreversible hydrocolloid, ALG) and digital (CEREC Bluecam, CER; CEREC Omnicam, OC; Cadent iTero, ITE; and Lava COS, LAV) full-arch impressions were obtained from a reference model with a known morphology, using a highly accurate reference scanner. The impressions obtained were then compared with the original geometry of the reference model and within each test group. A point-to-point measurement of the surface of the model using the signed nearest neighbour method resulted in a mean (10%-90%)/2 percentile value for the difference between the impression and original model (trueness) as well as the difference between impressions within a test group (precision). Trueness values ranged from 11.5 μm (VSE) to 60.2 μm (POE), and precision ranged from 12.3 μm (VSE) to 66.7 μm (POE). Among the test groups, VSE, VSES, and CER showed the highest trueness and precision. The deviation pattern varied with the impression method. Conventional impressions showed high accuracy across the full dental arch in all groups, except POE and ALG. Conventional and digital impression methods show differences regarding full-arch accuracy. Digital impression systems reveal higher local deviations of the full-arch model. Digital intraoral impression systems do not show superior accuracy compared to highly accurate conventional impression techniques. However, they provide excellent clinical results within their indications applying the correct scanning technique.

47 CFR 73.6014 - Protection of digital Class A TV stations.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 4 2011-10-01 2011-10-01 false Protection of digital Class A TV stations. 73... SERVICES RADIO BROADCAST SERVICES Class A Television Broadcast Stations § 73.6014 Protection of digital... be accepted if it fails to protect authorized digital Class A TV stations and applications for...

A Strategic Necessity: Building Senior Leadership's Fluency in Digital Technology

ERIC Educational Resources Information Center

Kolomitz, Kara; Cabellon, Edmund T.

2016-01-01

This chapter describes the opportunity for senior student affairs officers (SSAOs) to develop an increased digital fluency to meet the needs of various constituencies in the digital age. The authors explore what a digital fluency is, how it might impact SSAOs' leadership potential, and the benefits for their respective divisions.

Digital Journeys: A Perspective on Understanding the Digital Experiences of International Students

ERIC Educational Resources Information Center

Chang, Shanton; Gomes, Catherine

2017-01-01

The authors in this conceptual paper draw on the literature on information seeking behavior, social media use, and international student experiences to propose Digital Journeys as a framework which helps us understand the online behavior of international students. Here we theorize that the Digital Journey is the transition that individuals make…

47 CFR 73.6014 - Protection of digital Class A TV stations.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 4 2010-10-01 2010-10-01 false Protection of digital Class A TV stations. 73... SERVICES RADIO BROADCAST SERVICES Class A Television Broadcast Stations § 73.6014 Protection of digital... be accepted if it fails to protect authorized digital Class A TV stations and applications for...

The Use of a Digital Badge as an Indicator and a Motivator

ERIC Educational Resources Information Center

Iwata, Jun; Telloyan, John; Murphy, Lynne; Wang, Shudong; Clayton, John

2017-01-01

Digital portfolios can provide a space where evidence of a learner's competency is stored and digital badges can be used in their portfolios as valid indicators of accomplishment, skill, knowledge, or interest. The authors issued "digital badges" to our students who successfully completed the modules of a Medical English Terminology…

Beyond the Scanned Image: A Needs Assessment of Scholarly Users of Digital Collections

ERIC Educational Resources Information Center

Green, Harriett E.; Courtney, Angela

2015-01-01

This paper presents an analysis of how humanities scholars use digital collections in their research and the ways in which digital collections could be enhanced for scholarly use. The authors surveyed and interviewed humanities faculty from twelve research universities about their research practices with digital collections and present analysis of…

47 CFR 73.9008 - Interim approval of authorized digital output protection technologies and authorized recording...

Code of Federal Regulations, 2010 CFR

2010-10-01

... certification pursuant to § 0.459 of this chapter. (b) Initial certification window. Following the effective... window for digital output protection technologies or recording methods. Within thirty (30) days after the... certification window, the Commission shall issue a public notice identifying the certifications received and...

Trading Spaces: An Educator's Ethnographic Exploration of Adolescents' Digital Role-Play

ERIC Educational Resources Information Center

Haynes-Moore, Stacy

2015-01-01

In this work, the author examines a digital role-play in which participants composed an alternate version of "The Hunger Games" (Collins, 2008). Participants imagined characters and posted more than 400 scenes in the online collaboration. The author draws upon ethnographic methods (Merriam, 2009) to describe her participant-observer…

Digital Video as a Personalized Learning Assignment: A Qualitative Study of Student Authored Video Using the ICSDR Model

ERIC Educational Resources Information Center

Campbell, Laurie O.; Cox, Thomas D.

2018-01-01

Students within this study followed the ICSDR (Identify, Conceptualize/Connect, Storyboard, Develop, Review/Reflect/Revise) development model to create digital video, as a personalized and active learning assignment. The participants, graduate students in education, indicated that following the ICSDR framework for student-authored video guided…

Digital processing of radiographic images from PACS to publishing.

PubMed

Christian, M E; Davidson, H C; Wiggins, R H; Berges, G; Cannon, G; Jackson, G; Chapman, B; Harnsberger, H R

2001-03-01

Several studies have addressed the implications of filmless radiologic imaging on telemedicine, diagnostic ability, and electronic teaching files. However, many publishers still require authors to submit hard-copy images for publication of articles and textbooks. This study compares the quality digital images directly exported from picture archive and communications systems (PACS) to images digitized from radiographic film. The authors evaluated the quality of publication-grade glossy photographs produced from digital radiographic images using 3 different methods: (1) film images digitized using a desktop scanner and then printed, (2) digital images obtained directly from PACS then printed, and (3) digital images obtained from PACS and processed to improve sharpness prior to printing. Twenty images were printed using each of the 3 different methods and rated for quality by 7 radiologists. The results were analyzed for statistically significant differences among the image sets. Subjective evaluations of the filmless images found them to be of equal or better quality than the digitized images. Direct electronic transfer of PACS images reduces the number of steps involved in creating publication-quality images as well as providing the means to produce high-quality radiographic images in a digital environment.

DIGITAL LINE GRAPHS - USGS

EPA Science Inventory

USGS DLGs are digital representations of program-quadrangle format and sectional maps. All DLG data distributed by the United States Geological Survey (USGS) are DLG-Level 3 (DLG-3), which means the data contain a full range of attribute codes, have full topological structuring, ...

Snooping and Sexting: Digital Media as a Context for Dating Aggression and Abuse Among College Students.

PubMed

Reed, Lauren A; Tolman, Richard M; Ward, L Monique

2016-11-01

Digital dating abuse (DDA) is a pattern of behaviors that control, pressure, or threaten a dating partner using a cell phone or the Internet. A survey of 365 college students was conducted, finding that digital monitoring behaviors were especially common. There were no gender differences in number of DDA behaviors experienced, but women reported more negative hypothetical reactions to sexual messaging than men. DDA was associated with measures of physical, sexual, and psychological dating violence. Results suggest that digital media are a context for potentially harmful dating behaviors, and the experience of DDA may differ by gender for sexual behaviors. © The Author(s) 2016.

The Coming of Digital Desktop Media.

ERIC Educational Resources Information Center

Galbreath, Jeremy

1992-01-01

Discusses the movement toward digital-based platforms including full-motion video for multimedia products. Hardware- and software-based compression techniques for digital data storage are considered, and a chart summarizes features of Digital Video Interactive, Moving Pictures Experts Group, P x 64, Joint Photographic Experts Group, Apple…

47 CFR 74.785 - Low power TV digital data service pilot project.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 4 2011-10-01 2011-10-01 false Low power TV digital data service pilot project... Power TV, TV Translator, and TV Booster Stations § 74.785 Low power TV digital data service pilot project. Low power TV stations authorized pursuant to the LPTV Digital Data Services Act (Public Law 106...

A Taxonomy of Digital Media Types for Learner-Generated Digital Media Assignments

ERIC Educational Resources Information Center

Reyna, Jorge; Hanham, Jose; Meier, Peter

2017-01-01

The notion of students as co-creators of content in higher education is gaining popularity, with an ever-increasing emphasis on the development of digital media assignments. In a separate paper, the authors introduced the Digital Media Literacies Framework, which is composed of three interrelated domains: (1) conceptual, (2) functional, and (3)…

Literacy Learning in a Digitally Rich Humanities Classroom: Embracing Multiple, Collaborative, and Simultaneous Texts

ERIC Educational Resources Information Center

Buckley-Marudas, Mary Frances

2016-01-01

Understanding what happens when teachers embrace digital media for literacy learning is critical to realizing the potential of learning in the digital era. This article examines some of the ways that a high school teacher and his students leverage digital technologies for literacy learning in their humanities classrooms. The author introduces the…

47 CFR 74.785 - Low power TV digital data service pilot project.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 4 2010-10-01 2010-10-01 false Low power TV digital data service pilot project... Power TV, TV Translator, and TV Booster Stations § 74.785 Low power TV digital data service pilot project. Low power TV stations authorized pursuant to the LPTV Digital Data Services Act (Public Law 106...

Teaching Young Readers to Navigate a Digital Story When Rules Keep Changing

ERIC Educational Resources Information Center

Javorsky, Kristin; Trainin, Guy

2014-01-01

As mobile technologies such as tablets and smartphones offer opportunities to view stories in digital format, young readers are faced with new challenges in the reading task. The authors conducted an exploratory study of digital story applications on a mobile reading device and found that digital story applications are capable of taking large…

Marketing Digital Offerings Is Different: Strategies for Teaching about Digital Offerings in the Marketing Classroom

ERIC Educational Resources Information Center

Roberts, Scott D.; Micken, Kathleen S.

2015-01-01

Digital offerings represent different challenges for marketers than do traditional goods and services. After reviewing the literature, the authors suggest ways that the marketing of digital goods and services might be better presented to and better understood by students. The well-known four challenges of services marketing model (e.g.,…

Digital Suicide Prevention: Can Technology Become a Game-changer?

PubMed

Vahabzadeh, Arshya; Sahin, Ned; Kalali, Amir

2016-01-01

Suicide continues to be a leading cause of death and has been recognized as a significant public health issue. Rapid advances in data science can provide us with useful tools for suicide prevention, and help to dynamically assess suicide risk in quantitative data-driven ways. In this article, the authors highlight the most current international research in digital suicide prevention, including the use of machine learning, smartphone applications, and wearable sensor driven systems. The authors also discuss future opportunities for digital suicide prevention, and propose a novel Sensor-driven Mental State Assessment System.

DIGITAL LINE GRAPHS - USGS 1:24,000

EPA Science Inventory

USGS DLGs are digital representations of program-quadrangle format and sectional maps. All DLG data distributed by the United States Geological Survey (USGS) are DLG-Level 3 (DLG-3), which means the data contain a full range of attribute codes, have full topological structuring, ...

DIGITAL LINE GRAPHS - USGS 1:100,000

EPA Science Inventory

USGS DLGs are digital representations of program-quadrangle format and sectional maps. All DLG data distributed by the United States Geological Survey (USGS) are DLG-Level 3 (DLG-3), which means the data contain a full range of attribute codes, have full topological structuring, ...

Energy Efficient Engine: Control system component performance report

NASA Technical Reports Server (NTRS)

Beitler, R. S.; Bennett, G. W.

1984-01-01

An Energy Efficient Engine (E3) program was established to develop technology for improving the energy efficiency of future commercial transport aircraft engines. As part of this program, General Electric designed and tested a new engine. The design, fabrication, bench and engine testing of the Full Authority Digital Electronic Control (FADEC) system used for controlling the E3 Demonstrator Engine is described. The system design was based on many of the proven concepts and component designs used on the General Electric family of engines. One significant difference is the use of the FADEC in place of hydromechanical computation currently used.

Use of volumetric features for temporal comparison of mass lesions in full field digital mammograms

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bozek, Jelena, E-mail: jelena.bozek@fer.hr; Grgic, Mislav; Kallenberg, Michiel

2014-02-15

Purpose: Temporal comparison of lesions might improve classification between benign and malignant lesions in full-field digital mammograms (FFDM). The authors compare the use of volumetric features for lesion classification, which are computed from dense tissue thickness maps, to the use of mammographic lesion area. Use of dense tissue thickness maps for lesion characterization is advantageous, since it results in lesion features that are invariant to acquisition parameters. Methods: The dataset used in the analysis consisted of 60 temporal mammogram pairs comprising 120 mediolateral oblique or craniocaudal views with a total of 65 lesions, of which 41 were benign and 24more » malignant. The authors analyzed the performance of four volumetric features, area, and four other commonly used features obtained from temporal mammogram pairs, current mammograms, and prior mammograms. The authors evaluated the individual performance of all features and of different feature sets. The authors used linear discriminant analysis with leave-one-out cross validation to classify different feature sets. Results: Volumetric features from temporal mammogram pairs achieved the best individual performance, as measured by the area under the receiver operating characteristic curve (A{sub z} value). Volume change (A{sub z} = 0.88) achieved higher A{sub z} value than projected lesion area change (A{sub z} = 0.78) in the temporal comparison of lesions. Best performance was achieved with a set that consisted of a set of features extracted from the current exam combined with four volumetric features representing changes with respect to the prior mammogram (A{sub z} = 0.90). This was significantly better (p = 0.005) than the performance obtained using features from the current exam only (A{sub z} = 0.77). Conclusions: Volumetric features from temporal mammogram pairs combined with features from the single exam significantly improve discrimination of benign and malignant lesions in FFDM mammograms compared to using only single exam features. In the comparison with prior mammograms, use of volumetric change may lead to better performance than use of lesion area change.« less

Digital Storytelling: Preserving a Cultural Tradition

ERIC Educational Resources Information Center

Young, Jeff

2010-01-01

In this article, the author shows how digital photography could be an effective cultural preservation enabler. On July 1, 2007, with initial funding from Research in Motion and Merit Travel and support of more than 300 family and friends, the author and his team arrived in the small town of Monduli, Tanzania with the purpose of teaching digital…

Mis/Representations in School-Based Digital Media Production: An Ethnographic Exploration with Muslim Girls

ERIC Educational Resources Information Center

Dahya, Negin; Jenson, Jennifer

2015-01-01

In this article, the authors discuss findings from a digital media production club with racialized girls in a low-income school in Toronto, Ontario. Specifically, the authors consider how student-produced media is impacted by ongoing postcolonial structures relating to power and representation in the school and in the media production work of…

"Comments on Greenhow, Robelia, and Hughes": Digital Immersion, Teacher Learning, and Games

ERIC Educational Resources Information Center

Owston, Ronald D.

2009-01-01

In this comment article, the author elaborates on three significant issues that Greenhow, Robelia, and Hughes (2009) identified but did not explore. First, the author discusses the need for research on the impact that youth's immersion in a digital world may have on metacognitive and social skill development. Then teacher learning with the Web is…

Digital Versus Conventional Impressions in Fixed Prosthodontics: A Review.

PubMed

Ahlholm, Pekka; Sipilä, Kirsi; Vallittu, Pekka; Jakonen, Minna; Kotiranta, Ulla

2018-01-01

To conduct a systematic review to evaluate the evidence of possible benefits and accuracy of digital impression techniques vs. conventional impression techniques. Reports of digital impression techniques versus conventional impression techniques were systematically searched for in the following databases: Cochrane Central Register of Controlled Trials, PubMed, and Web of Science. A combination of controlled vocabulary, free-text words, and well-defined inclusion and exclusion criteria guided the search. Digital impression accuracy is at the same level as conventional impression methods in fabrication of crowns and short fixed dental prostheses (FDPs). For fabrication of implant-supported crowns and FDPs, digital impression accuracy is clinically acceptable. In full-arch impressions, conventional impression methods resulted in better accuracy compared to digital impressions. Digital impression techniques are a clinically acceptable alternative to conventional impression methods in fabrication of crowns and short FDPs. For fabrication of implant-supported crowns and FDPs, digital impression systems also result in clinically acceptable fit. Digital impression techniques are faster and can shorten the operation time. Based on this study, the conventional impression technique is still recommended for full-arch impressions. © 2016 by the American College of Prosthodontists.

Health science communication strategies used by researchers with the public in the digital and social media ecosystem: a systematic scoping review protocol.

PubMed

Fontaine, Guillaume; Lavallée, Andréane; Maheu-Cadotte, Marc-André; Bouix-Picasso, Julien; Bourbonnais, Anne

2018-01-30

The optimisation of health science communication (HSC) between researchers and the public is crucial. In the last decade, the rise of the digital and social media ecosystem allowed for the disintermediation of HSC. Disintermediation refers to the public's direct access to information from researchers about health science-related topics through the digital and social media ecosystem, a process that would otherwise require a human mediator, such as a journalist. Therefore, the primary aim of this scoping review is to describe the nature and the extent of the literature regarding HSC strategies involving disintermediation used by researchers with the public in the digital and social media ecosystem. The secondary aim is to describe the HSC strategies used by researchers, and the communication channels associated with these strategies. We will conduct a scoping review based on the Joanna Briggs Institute's methodology and perform a systematic search of six bibliographical databases (CINAHL, EMBASE, IBSS, PubMed, Sociological Abstracts and Web of Science), four trial registries and relevant sources of grey literature. Relevant journals and reference lists of included records will be hand-searched. Data will be managed using the EndNote software and the Rayyan web application. Two review team members will perform independently the screening process as well as the full-text assessment of included records. Descriptive data will be synthesised in a tabular format. Data regarding the nature and the extent of the literature, the HSC strategies and the associated communication channels will be presented narratively. This review does not require institutional review board approval as we will use only collected and published data. Results will allow the mapping of the literature about HSC between researchers and the public in the digital and social media ecosystem, and will be published in a peer-reviewed journal. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

Computer Simulation and Digital Resources for Plastic Surgery Psychomotor Education.

PubMed

Diaz-Siso, J Rodrigo; Plana, Natalie M; Stranix, John T; Cutting, Court B; McCarthy, Joseph G; Flores, Roberto L

2016-10-01

Contemporary plastic surgery residents are increasingly challenged to learn a greater number of complex surgical techniques within a limited period. Surgical simulation and digital education resources have the potential to address some limitations of the traditional training model, and have been shown to accelerate knowledge and skills acquisition. Although animal, cadaver, and bench models are widely used for skills and procedure-specific training, digital simulation has not been fully embraced within plastic surgery. Digital educational resources may play a future role in a multistage strategy for skills and procedures training. The authors present two virtual surgical simulators addressing procedural cognition for cleft repair and craniofacial surgery. Furthermore, the authors describe how partnerships among surgical educators, industry, and philanthropy can be a successful strategy for the development and maintenance of digital simulators and educational resources relevant to plastic surgery training. It is our responsibility as surgical educators not only to create these resources, but to demonstrate their utility for enhanced trainee knowledge and technical skills development. Currently available digital resources should be evaluated in partnership with plastic surgery educational societies to guide trainees and practitioners toward effective digital content.

Shaping Our World: Digital Storytelling and the Authoring of Society

ERIC Educational Resources Information Center

Brzoska, Karen Lynn

2009-01-01

Globalization, networked societies, and a knowledge-based economy engender increasing reliance on digital communication technologies for the dissemination of information and ideas (Castells, Fernandez-Ardevol, Qiu & Sey, 2006). While the technological revolution has broadened access this digital domain, participants often adopt the passive…

What Do Digital Books Mean for Libraries?

ERIC Educational Resources Information Center

Lynch, Clifford

2001-01-01

Discusses digital books, or electronic books, and their relationship to libraries and communication between authors and readers. Topics include the scholarly market, for academic libraries, versus the consumer market; textbooks versus novels; digitization of older books; marketing; costs; and electronic books versus printed books. (LRW)

Behind Closed Doors: The Pedagogy and Interventionist Practice of Digital Storytelling

ERIC Educational Resources Information Center

Eisenhauer, Jennifer

2012-01-01

Through arts-based research and digital storytelling, the author investigates the representation of psychiatric disabilities in this article and proposes that digital storytelling can be an interventionist artistic and pedagogical process through which to challenge dominant stigmatizing representations of psychiatric disability.

Optimizing targeted vaccination across cyber-physical networks: an empirically based mathematical simulation study.

PubMed

Mones, Enys; Stopczynski, Arkadiusz; Pentland, Alex 'Sandy'; Hupert, Nathaniel; Lehmann, Sune

2018-01-01

Targeted vaccination, whether to minimize the forward transmission of infectious diseases or their clinical impact, is one of the 'holy grails' of modern infectious disease outbreak response, yet it is difficult to achieve in practice due to the challenge of identifying optimal targets in real time. If interruption of disease transmission is the goal, targeting requires knowledge of underlying person-to-person contact networks. Digital communication networks may reflect not only virtual but also physical interactions that could result in disease transmission, but the precise overlap between these cyber and physical networks has never been empirically explored in real-life settings. Here, we study the digital communication activity of more than 500 individuals along with their person-to-person contacts at a 5-min temporal resolution. We then simulate different disease transmission scenarios on the person-to-person physical contact network to determine whether cyber communication networks can be harnessed to advance the goal of targeted vaccination for a disease spreading on the network of physical proximity. We show that individuals selected on the basis of their closeness centrality within cyber networks (what we call 'cyber-directed vaccination') can enhance vaccination campaigns against diseases with short-range (but not full-range) modes of transmission. © 2018 The Author(s).

Multisensory integration in complete unawareness: evidence from audiovisual congruency priming.

PubMed

Faivre, Nathan; Mudrik, Liad; Schwartz, Naama; Koch, Christof

2014-11-01

Multisensory integration is thought to require conscious perception. Although previous studies have shown that an invisible stimulus could be integrated with an audible one, none have demonstrated integration of two subliminal stimuli of different modalities. Here, pairs of identical or different audiovisual target letters (the sound /b/ with the written letter "b" or "m," respectively) were preceded by pairs of masked identical or different audiovisual prime digits (the sound /6/ with the written digit "6" or "8," respectively). In three experiments, awareness of the audiovisual digit primes was manipulated, such that participants were either unaware of the visual digit, the auditory digit, or both. Priming of the semantic relations between the auditory and visual digits was found in all experiments. Moreover, a further experiment showed that unconscious multisensory integration was not obtained when participants did not undergo prior conscious training of the task. This suggests that following conscious learning, unconscious processing suffices for multisensory integration. © The Author(s) 2014.

Confronting the Digital Divide: Debunking Brave New World Discourses

ERIC Educational Resources Information Center

Rowsell, Jennifer; Morrell, Ernest; Alvermann, Donna E.

2017-01-01

There is far more to the digital divide than meets the eye. In this article, the authors consolidate existing research on the digital divide to offer some tangible ways for educators to bridge the gap between the haves and have-nots, or the cans and cannots. Drawing on Aldous Huxley's notion of a "brave new world," some digital divide…

Commentary: The relationship status of digital media and professionalism: it's complicated.

PubMed

Farnan, Jeanne M; Paro, John A M; Higa, Jennifer T; Reddy, Shalini T; Humphrey, Holly J; Arora, Vineet M

2009-11-01

The rising popularity of digital applications, such as social networking, media share sites, and blogging, has significantly affected how medical trainees interact with educators, colleagues, and the public. Despite the increased popularity and use of such applications amongst the current generation of trainees, medical educators have little evidence or guidance about preventing misuse and ensuring standards for professional conduct. As trainees become more technologically savvy, it is the responsibility of medical educators to familiarize themselves not only with the advantages of this technology but also with the potential negative effects of its misuse. Professionalism, appropriateness for public consumption, and individual or institutional representation in digital media content are just some of the salient issues that arise when considering the ramifications of trainees' digital behavior in the absence of established policies or education on risk. In this commentary the authors explore the rising use of digital media and its reflection of medical trainees' professionalism. To address possible issues related to professionalism in digital media, the authors hypothesize potential solutions, including exploring faculty familiarity with digital media and policy development, educating students on the potential risks of misuse, and modeling professionalism in this new digital age.

Transnational Feminist Rhetorics in a Digital World

ERIC Educational Resources Information Center

Queen, Mary

2008-01-01

In this essay, the author examines the digital circulations of representations of one Afghan women's rights organization--the Revolutionary Association of Women of Afghanistan (RAWA)--to demonstrate the importance of a global and digital field for feminist rhetorical analysis. Specifically, this analysis traces how women's self-representations are…

47 CFR 2.303 - Other forms of identification of stations.

Code of Federal Regulations, 2010 CFR

2010-10-01

... whose signals are being relayed, or by network identification. Broadcasting (television booster.... (b) Digital selective calls will be authorized by the Commission and will be formed by groups of... identification number: 4 digits. (2) Ship station selective call number: 5 digits. (3) Predetermined group of...

Struggle for Social Position in Digital Media Composition

ERIC Educational Resources Information Center

Doerr-Stevens, Candance

2013-01-01

This study investigates the processes and products of multimodal and multi-authored digital media composition. Using ethnographic case study and Mediated Discourse Analysis (Norris & Jones, 2005), this study focuses specifically on the digital media composition of radio and film documentaries, examining struggle among students, media, and…

The Use of Digital Narratives to Enhance Counseling and Psychotherapy

ERIC Educational Resources Information Center

Pillay, Yegan

2009-01-01

Technological advances have impinged on every aspect of contemporary phenomenological experiences, including counseling and psychotherapy. The author explores the intersection of narrative therapy, specifically the traditional memory book, with the advances in information technology in the formulation of the digital memory book. The digital memory…

Teaching Language and Culture in a Digital Age

ERIC Educational Resources Information Center

Chamberlin-Quinlisk, Carla

2012-01-01

This article examines part of the complex relationship between linguistic and cultural diversity and the digital technologies that shape our social worlds. In particular, the author explores how digital media cultivate ideas about language practice in multicultural communities and simultaneously serve as a pedagogical tool for discussing…

Digital "Testimonio" as a Signature Pedagogy for Latin@ Studies

ERIC Educational Resources Information Center

Benmayor, Rina

2012-01-01

This article proposes the curricular integration of digital "testimonio" as a "signature" pedagogy in Latin@ Studies. The "testimonio" tradition of urgent narratives and the creative multimedia languages of digital storytelling--text, voice, image, and sound--invite historically marginalized subjects, especially younger generations, to author and…

The Affordances of Blogs and Digital Video: New Potentials for Exploring Topics and Representing Meaning

ERIC Educational Resources Information Center

Ranker, Jason

2015-01-01

In this article, the author presents examples of two ninth-grade students' literacy processes as they used blogs and digital video (amongst other media) to inquire into the subject matter of fast food. The author discusses the students' uses of these focal media through the concept of affordances, a concept that refers to the distinct…

How Does the Empty Glass Fill? A Modern Philosophy of the Digital Divide.

ERIC Educational Resources Information Center

Singleton, Solveig; Mast, Lucas

2000-01-01

The authors argue that the digital divide is not a serious problem. Even without government help, entrepreneurs are offering myriad services and products geared towards people in the lower economic brackets. More of a problem, according to the authors, is the lack of basic skills in areas such as math and reading among younger people. (JM)

Highly linear, sensitive analog-to-digital converter

NASA Technical Reports Server (NTRS)

Cox, J.; Finley, W. R.

1969-01-01

Analog-to-digital converter converts 10 volt full scale input signal into 13 bit digital output. Advantages include high sensitivity, linearity, low quantitizing error, high resistance to mechanical shock and vibration loads, and temporary data storage capabilities.

Examining unusual digit span performance in a population of postsecondary students assessed for academic difficulties.

PubMed

Harrison, Allyson G; Rosenblum, Yoni; Currie, Shannon

2010-09-01

Methods of identifying poor test-related motivation using the Wechsler Adult Intelligence Scale Digit Span subtest are based on identification of performance patterns that are implausible if the test taker is investing full effort. No studies to date, however, have examined the specificity of such measures, particularly when evaluating persons with either known or suspected learning or attention disorders. This study investigated performance of academically challenged students on three measures embedded in the Wechsler Adult Intelligence Scale-III, namely, low Digit Span, high Vocabulary-Digit span (Voc-DS), and low Reliable Digit Span scores. Evaluating subjects believed to be investing full effort in testing, it was found that both Digit Span and Reliable Digit Span had high specificity, although both showed relatively lower sensitivity. In contrast, VOC-DS was especially weak in both sensitivity and specificity, with an apparent false positive rate of 28%. Use of VOC-DS is therefore not appropriate for those with a history of learning or attention problems.

[Current problems in the data acquisition of digitized virtual human and the countermeasures].

PubMed

Zhong, Shi-zhen; Yuan, Lin

2003-06-01

As a relatively new field of medical science research that has attracted the attention from worldwide researchers, study of digitized virtual human still awaits long-term dedicated effort for its full development. In the full array of research projects of the integrated Virtual Chinese Human project, virtual visible human, virtual physical human, virtual physiome, and intellectualized virtual human must be included as the four essential constitutional opponents. The primary importance should be given to solving the problems concerning the data acquisition for the dataset of this immense project. Currently 9 virtual human datasets have been established worldwide, which are subjected to critical analyses in the paper with special attention given to the problems in the data storage and the techniques employed, for instance, in these datasets. On the basis of current research status of Virtual Chinese Human project, the authors propose some countermeasures for solving the problems in the data acquisition for the dataset, which include (1) giving the priority to the quality control instead of merely racing for quantity and speed, and (2) improving the setting up of the markers specific for the tissues and organs to meet the requirement from information technology, (3) with also attention to the development potential of the dataset which should have explicit pertinence to specific actual applications.

The NASA ADS Abstract Service and the Distributed Astronomy Digital Library [and] Project Soup: Comparing Evaluations of Digital Collection Efforts [and] Cross-Organizational Access Management: A Digital Library Authentication and Authorization Architecture [and] BibRelEx: Exploring Bibliographic Databases by Visualization of Annotated Content-based Relations [and] Semantics-Sensitive Retrieval for Digital Picture Libraries [and] Encoded Archival Description: An Introduction and Overview.

ERIC Educational Resources Information Center

Kurtz, Michael J.; Eichorn, Guenther; Accomazzi, Alberto; Grant, Carolyn S.; Demleitner, Markus; Murray, Stephen S.; Jones, Michael L. W.; Gay, Geri K.; Rieger, Robert H.; Millman, David; Bruggemann-Klein, Anne; Klein, Rolf; Landgraf, Britta; Wang, James Ze; Li, Jia; Chan, Desmond; Wiederhold, Gio; Pitti, Daniel V.

1999-01-01

Includes six articles that discuss a digital library for astronomy; comparing evaluations of digital collection efforts; cross-organizational access management of Web-based resources; searching scientific bibliographic databases based on content-based relations between documents; semantics-sensitive retrieval for digital picture libraries; and…

Right main bronchial fracture resolution by digital thoracic drainage system.

PubMed

Cortés Julián, Gildardo; Mier, José M; Iñiguez, Marco A; Guzmán de Alba, Enrique

2016-03-01

Tracheobronchial stenosis is common in the thoracic surgery service, and iatrogenic injury of the airway after manipulation is not infrequent. When a digital thoracic drainage system came onto the market, many advantages were evident. A 24-year-old woman with critical right main bronchial stenosis underwent airway dilation that was complicated by a tear with a massive air leak, resulting in a total right pneumothorax. We employed a pleural drain connected to a digital thoracic drainage system. The drain was removed 2 days after successful resolution of the air leak. © The Author(s) 2015.

Digital Suicide Prevention: Can Technology Become a Game-changer?

PubMed Central

Sahin, Ned; Kalali, Amir

2016-01-01

Suicide continues to be a leading cause of death and has been recognized as a significant public health issue. Rapid advances in data science can provide us with useful tools for suicide prevention, and help to dynamically assess suicide risk in quantitative data-driven ways. In this article, the authors highlight the most current international research in digital suicide prevention, including the use of machine learning, smartphone applications, and wearable sensor driven systems. The authors also discuss future opportunities for digital suicide prevention, and propose a novel Sensor-driven Mental State Assessment System. PMID:27800282

On Reading and Digital Media: Rejoinder to "Digital Technology and Student Cognitive Development: The Neuroscience of the University Classroom"

ERIC Educational Resources Information Center

Williams-Pierce, Caroline

2016-01-01

This commentary serves as an introduction to multiple scholarly fields about the value of digital media for providing contexts for and provoking learning. The author proposes that rather than considering a dichotomy between reading physical books and reading digital media, as encouraged by Cavanaugh et al. (2015), instead consider a scale of sorts…

47 CFR 80.359 - Frequencies for digital selective calling (DSC).

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies for digital selective calling (DSC... for digital selective calling (DSC). (a) General purpose calling. The following table describes the calling frequencies for use by authorized ship and coast stations for general purpose DSC. There are three...

The Necessity of Real-Time: Fact and Fiction in Digital Reference Systems.

ERIC Educational Resources Information Center

Lankes, R. David; Shostack, Pauline

2002-01-01

Discussion of digital reference services and the use of real-time versus asynchronous services such as email focuses on data from the AskERIC digital reference service to demonstrate that asynchronous services are not only useful but may have greater utility than real-time systems. (Author/LRW)

The Digital Age of Student Affairs

ERIC Educational Resources Information Center

Cabellon, Edmund T.; Junco, Reynol

2015-01-01

This chapter describes the student affairs profession in the digital age. The authors explore new challenges educators and professionals face as new areas are added and expanded, how social networks and digital technology tools continue to evolve, and what skills are needed to engage with students in person and online.

Building Digital Audio Preservation Infrastructure and Workflows

ERIC Educational Resources Information Center

Young, Anjanette; Olivieri, Blynne; Eckler, Karl; Gerontakos, Theodore

2010-01-01

In 2009 the University of Washington (UW) Libraries special collections received funding for the digital preservation of its audio indigenous language holdings. The university libraries, where the authors work in various capacities, had begun digitizing image and text collections in 1997. Because of this, at the onset of the project, workflows (a…

A Business Educator's Guide to Transitioning to a Digital Curriculum

ERIC Educational Resources Information Center

Roberts, Scott D.; Rains, Russell E.; Perry, Gregory E.

2012-01-01

The authors, representing three key digital media business disciplines, present a case for how business curriculum could be updated to include a strong digital element without recreating the entire business school enterprise or spending millions on new faculty and technology. The three key disciplines are technology, law, and marketing.

Camera Ready: Capturing a Digital History of Chester

ERIC Educational Resources Information Center

Lehman, Kathy

2008-01-01

Armed with digital cameras, voice recorders, and movie cameras, students from Thomas Dale High School in Chester, Virginia, have been exploring neighborhoods, interviewing residents, and collecting memories of their hometown. In this article, the author describes "Digital History of Chester", a project for creating a commemorative DVD.…

Changing State Digital Libraries

ERIC Educational Resources Information Center

Pappas, Marjorie L.

2006-01-01

Research has shown that state virtual or digital libraries are evolving into websites that are loaded with free resources, subscription databases, and instructional tools. In this article, the author explores these evolving libraries based on the following questions: (1) How user-friendly are the state digital libraries?; (2) How do state digital…

77 FR 60984 - World Digital Innovations; Supplemental Notice That Initial Market-Based Rate Filing Includes...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-05

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. ER12-2654-001] World Digital Innovations; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization This is a supplemental notice in the above-referenced proceeding, of World Digital...

Systems of Knowledge Organization for Digital Libraries: Beyond Traditional Authority Files.

ERIC Educational Resources Information Center

Hodge, Gail

This report provides an overview of knowledge organization systems (KOSs) and includes pertinent examples of their application to digital materials, offering extensive practical information for institutions embarking on digital library initiatives. The first section of the report defines the general characteristics of KOSs, with emphasis on their…

Emergency Control Aircraft System Using Thrust Modulation

NASA Technical Reports Server (NTRS)

Burken, John J. (Inventor); Burcham, Frank W., Jr. (Inventor)

2000-01-01

A digital longitudinal Aircraft Propulsion Control (APC system of a multiengine aircraft is provided by engine thrust modulation in response to comparing an input flightpath angle signal (gamma)c from a pilot thumbwheel. or an ILS system with a sensed flightpath angle y to produce an error signal (gamma)e that is then integrated (with reasonable limits) to generate a drift correction signal to be added to the error signal (gamma)e after first subtracting a lowpass filtered velocity signal Vel(sub f) for phugoid damping. The output error signal is multiplied by a constant to produce an aircraft thrust control signal ATC of suitable amplitude to drive a throttle servo for all engines. each of which includes its own full-authority digital engine control (FADEC) computer. An alternative APC system omits sensed flightpath angle feedback and instead controls the flightpath angle by feedback of the lowpass filtered velocity signal Vel(sub f) which also inherently provides phugoid damping. The feature of drift compensation is retained.

Guidance, Navigation and Control Digital Emulation Technology Laboratory. Volume 1. Part 2. Task 1: Digital Emulation Technology Laboratory

DTIC Science & Technology

1991-09-27

AD-A241 692 II I] II I11 ANNUAL REPORT VOLUME 1 PART 2 TASK 1: DIGITAL EMULATION TECHNOLOGY LABORATOIRY REPORT NO. AR-0142-91-001 September 27, 1991... DIGITAL EMULATION TECHNOLOGY LABORATORY Contract No. DASG60-89-C-0142 Sponsored By The United States Army ? trategic Defense Command COMPUTER...ANNUAL REPORT VOLUME 1 PART 2 TASK 1: DIGITAL EMULATION TECHNOLOGY LABORATORY September 27, 1991 Authors Thomas R. Collins and Stephen R. Wachtel

Becoming Literate Digitally in a Digitally Literate Environment of Their Own

ERIC Educational Resources Information Center

O'Byrne, W. Ian; Pytash, Kristine E.

2017-01-01

This commentary begins with a summary of the current landscape of literacy, technology, and education. The authors then examine A Domain of One's Own as an important new initiative and explore how teachers and schools can implement this initiative. The authors contend that the building and developing of A Domain of One's Own is a good example of…

Digital Video Interactive (DVI) Based Authoring Tools for Unit Level Training. Final Technical Report for Period 27 September 1991 - 27 May 1992.

ERIC Educational Resources Information Center

Hyltin, John P.; And Others

This report describes DVI (Digital Video Interactive) technology, current authoring languages and tools, and the reasons for developing new tools and applications. The work described was performed by Betac Corporation as part of a Phase II Small Business Innovation Research project. Section I provides background information on DVI. DVI technology…

Author fees for online publication

NASA Astrophysics Data System (ADS)

Like the journals themselves, AGU publication fees have been restructured to accommodate the new online, publish-as-ready approach. The new fee structure is based on authors' providing electronic files of their text and art in acceptable formats (Word, WordPerfect, and LaTeX for text, and .eps or .tif for digital art). However, if you are unable to supply electronic files, you can opt for a higher-charge, full-service route in which AGU will create electronic files from hard copy. All authors for AGU journals are expected to support the journal archive through fees based on number as well as size of article files. The revenue from these fees is set aside for the "Perpetual Care Trust Fund," which will support the migration of the journal archive to new formats or media as technology changes. For several journals, excess length fees remain in place to encourage submission of concisely written articles. During this first transition year, most author fees are based on the number of print page equivalents (pdf) in an article; in the future, however, charges are expected to be associated with file size. The specific fees for each journal are posted on AGU's Web site under Publications-Tools for Authors.

Digital Photograph Security: What Plastic Surgeons Need to Know.

PubMed

Thomas, Virginia A; Rugeley, Patricia B; Lau, Frank H

2015-11-01

Sharing and storing digital patient photographs occur daily in plastic surgery. Two major risks associated with the practice, data theft and Health Insurance Portability and Accountability Act (HIPAA) violations, have been dramatically amplified by high-speed data connections and digital camera ubiquity. The authors review what plastic surgeons need to know to mitigate those risks and provide recommendations for implementing an ideal, HIPAA-compliant solution for plastic surgeons' digital photography needs: smartphones and cloud storage. Through informal discussions with plastic surgeons, the authors identified the most common photograph sharing and storage methods. For each method, a literature search was performed to identify the risks of data theft and HIPAA violations. HIPAA violation risks were confirmed by the second author (P.B.R.), a compliance liaison and privacy officer. A comprehensive review of HIPAA-compliant cloud storage services was performed. When possible, informal interviews with cloud storage services representatives were conducted. The most common sharing and storage methods are not HIPAA compliant, and several are prone to data theft. The authors' review of cloud storage services identified six HIPAA-compliant vendors that have strong to excellent security protocols and policies. These options are reasonably priced. Digital photography and technological advances offer major benefits to plastic surgeons but are not without risks. A proper understanding of data security and HIPAA regulations needs to be applied to these technologies to safely capture their benefits. Cloud storage services offer efficient photograph sharing and storage with layers of security to ensure HIPAA compliance and mitigate data theft risk.

Mechanics of evolutionary digit reduction in fossil horses (Equidae).

PubMed

McHorse, Brianna K; Biewener, Andrew A; Pierce, Stephanie E

2017-08-30

Digit reduction is a major trend that characterizes horse evolution, but its causes and consequences have rarely been quantitatively tested. Using beam analysis on fossilized centre metapodials, we tested how locomotor bone stresses changed with digit reduction and increasing body size across the horse lineage. Internal bone geometry was captured from 13 fossil horse genera that covered the breadth of the equid phylogeny and the spectrum of digit reduction and body sizes, from Hyracotherium to Equus To account for the load-bearing role of side digits, a novel, continuous measure of digit reduction was also established-toe reduction index (TRI). Our results show that without accounting for side digits, three-toed horses as late as Parahippus would have experienced physiologically untenable bone stresses. Conversely, when side digits are modelled as load-bearing, species at the base of the horse radiation through Equus probably maintained a similar safety factor to fracture stress. We conclude that the centre metapodial compensated for evolutionary digit reduction and body mass increases by becoming more resistant to bending through substantial positive allometry in internal geometry. These results lend support to two historical hypotheses: that increasing body mass selected for a single, robust metapodial rather than several smaller ones; and that, as horse limbs became elongated, the cost of inertia from the side toes outweighed their utility for stabilization or load-bearing. © 2017 The Author(s).

Body as Echoes: Cyber Archiving of Dazu Rock Carvings

NASA Astrophysics Data System (ADS)

Chen, W.-W.

2017-08-01

"Body As Echoes: Cyber Archiving of Dazu Rock Carvings (BAE project in short)" strives to explore the tangible/intangible aspects of digital heritage conservation. Aiming at Dazu Rock Carvings - World Heritage Site of Sichuan Province, BAE project utilizes photogrammetry and digital sculpting technique to investigate digital narrative of cultural heritage conservation. It further provides collaborative opportunities to conduct the high-resolution site survey for scholars and institutions at local authorities. For preserving and making sustainable of the tangible cultural heritage at Dazu Rock Carvings, BAE project cyber-archives the selected niches and the caves at Dazu, and transform them into high-resolution, three-dimensional models. For extending the established results and making the digital resources available to broader audiences, BAE project will further develop interactive info-motion interface and apply the knowledge of digital heritage from BAE project to STEM education. BAE project expects to bridge the platform for archeology, computer graphics, and interactive info-motion design. Digital sculpting, projection mapping, interactive info-motion and VR will be the core techniques to explore the narrative of digital heritage conservation. For further protecting, educating and consolidating "building dwelling thinking" through digital heritage preservation, BAE project helps to preserve the digital humanity, and reach out to museum staffs and academia. By the joint effort of global institutions and local authorities, BAE project will also help to foster and enhance the mutual understanding through intercultural collaborations.

Oldies, Music Rights, and the Digital Age

ERIC Educational Resources Information Center

McDonald, Peter

2005-01-01

The author discusses the issue of copyright, oldies, and digital preservation. He examines efforts being made to create digital sound repositories for music record prior to 1970 at such places as Yale, Syracuse, the New York Public Library, and the Library of Congress. These issues are explored by contrasting the music industry's concern for loss…

Protest: Critical Lessons of Using Digital Media for Social Change

ERIC Educational Resources Information Center

LaRiviere, Kristin; Snider, Jeanette; Stromberg, Alison; O'Meara, KerryAnn

2012-01-01

In this article, the authors consider the strengths and weaknesses of digital media in the organization of student activism, and how educators can better assist and advise student activists using digital media to create improved learning opportunities. To gain a perspective on the relative strengths and challenges of online media in regard to…

Using Digital Photography to Supplement Learning of Biotechnology

ERIC Educational Resources Information Center

Norflus, Fran

2012-01-01

The author used digital photography to supplement learning of biotechnology by students with a variety of learning styles and educational backgrounds. Because one approach would not be sufficient to reach all the students, digital photography was used to explain the techniques and results to the class instead of having to teach each student…

Youth Culture and Digital Media: New Literacies for New Times

ERIC Educational Resources Information Center

Hull, Glynda A.

2003-01-01

In this article, the author discusses the "Digital Underground Storytelling for Youth" (DUSTY), a collection of after-school, evening, and summer programs that is a university-community collaborative aimed at closing the "digital divide." At DUSTY the goal is to position participants to tell stories about self and community, and to use those…

Seeing Music--Hearing Art

ERIC Educational Resources Information Center

Stephens, Pam

2007-01-01

In this article, the author explores the digital artwork of Brian Evans, a composer-artist who creates visualizations of sound. Through the years Evans' love for music and visual art led him to explore ways to work concurrently with image and sound. Digital technology proved to be such a means. Digital technology is based upon the transcription of…

Searching for Utopia: Best Practices in Digitizing the Corporate Library.

ERIC Educational Resources Information Center

Stach, Ron

Using an in-depth review of the literature and the author's own personal experience, this paper attempts to distill the eight best practices of those undertaking digitization projects. Results are intended specifically to assist special librarians undertaking a digitization effort in a corporate setting, but conclusions could equally apply to the…

Patterns of Inclusion: Fostering Digital Citizenship through Hybrid Education

ERIC Educational Resources Information Center

Pedersen, Alex Young; Nørgaard, Rikke Toft; Köppe, Christian

2018-01-01

Reconsidering the concept of digital citizenship and the essential component of education, the authors propose that the concept of Hybrid Education may serve both as a guideline for the utilization of digital technologies in education and as a methodology for fostering new forms of participation, inclusion and engagement in society. Following T.…

Digital Print Concepts: Conceptualizing a Modern Framework for Measuring Emerging Knowledge

ERIC Educational Resources Information Center

Javorsky, Kristin H.

2014-01-01

This dissertation sought to produce and empirically test a theoretical model for the literacy construct of print concepts that would take into account the unique affordances of digital picture books for emergent readers. The author used an exploratory study of twenty randomly selected digital story applications to identify print conventions, text…

Preservice Social Studies Teachers' Historical Thinking and Digitized Primary Sources: What They Use and Why

ERIC Educational Resources Information Center

Salinas, Cinthia; Bellows, M. Elizabeth; Liaw, H. Leonard

2011-01-01

In this qualitative case study the authors explored secondary social studies preservice teachers' abilities to discern the digitized primary resources available to them for historical thinking instruction. The emerging analysis highlights the development of these young teachers' knowledge and understandings of digitized resources as they relate to…

"Impossible Is Nothing": Expressing Difficult Knowledge through Digital Storytelling

ERIC Educational Resources Information Center

Johnson, Lauren; Kendrick, Maureen

2017-01-01

The study focuses on a digital storytelling project conducted in a school district's transition program, in which adolescent refugee and immigrant English learners were invited to share aspects of their identities and social worlds through a range of modes. In this article, the authors look closely at one student's digital story through a…

PrimaryAccess: Creating Digital Documentaries in the Social Studies Classroom

ERIC Educational Resources Information Center

Ferster, Bill; Hammond, Tom; Bull, Glen

2006-01-01

The authors have been working with teachers who are drawing upon various online resources to construct digital documentaries that explore some facet of history, such as Japanese American internment or the liberation of Western Europe during World War II. These activities build on students' interest in digital media, recognizing a fundamental shift…

Composing for Digital Publication: Rhetoric, Design, Code

ERIC Educational Resources Information Center

Eyman, Douglas; Ball, Cheryl E.

2014-01-01

The authors discuss the state of digital publication with the claim that, at this historical moment, nearly all composition is digital composition. But, as a field, composition studies has not yet made that shift completely explicit in the discussions of composing processes and writing pedagogies. A deeper engagement with this very rapid shift in…

iPhones, Tablets, and Apps, Oh My!

ERIC Educational Resources Information Center

Vrotny, Vinnie

2014-01-01

How can parents help their children become positive digital citizens, leverage tools for learning and creativity, while maintaining a healthy balance in a digital age? In this article, the author offers a framework in helping parents become guides and mentors for their children in the dizzying digital age. The following guidelines are presented:…

Revisiting the Digital Divide in the Context of a "Flattening" World

ERIC Educational Resources Information Center

Subramony, Deepak Prem

2014-01-01

This article employs a variety of theoretical lenses to describe the nature and ramifications of the Digital Divide, which, the author states, continues to remain one of the biggest social challenges to confront the human race in modern times--even as technological advances, globalization, and other socioeconomic shifts are rendering digital media…

Disrupting Educational Inequalities through Youth Digital Activism

ERIC Educational Resources Information Center

Stornaiuolo, Amy; Thomas, Ebony Elizabeth

2017-01-01

This article reviews scholarship on youth and young adult activism in digital spaces, as young users of participatory media sites are engaging in political, civic, social, or cultural action and advocacy online to create social change. The authors argue that youth's digital activism serves as a central mechanism to disrupt inequality, and that…

Shaping the Curriculum: The Power of a Library's Digital Resources

ERIC Educational Resources Information Center

Kirkwood, Patricia

2011-01-01

Researchers were the first adopters of digital resources available through the library. Online journals and databases make finding research articles much easier than when this author started as a librarian more than 20 years ago. Speedier interlibrary loan due to digital delivery means research materials are never far away. Making it easier for…

Web Usage Mining: Application to an Online Educational Digital Library Service

ERIC Educational Resources Information Center

Palmer, Bart C.

2012-01-01

This dissertation was situated in the crossroads of educational data mining (EDM), educational digital libraries (such as the National Science Digital Library; http://nsdl.org), and examination of teacher behaviors while creating online learning resources in an end-user authoring system, the Instructional Architect (IA; http://ia.usu.edu). The…

How to Kill a Journalism School: The Digital Sublime in the Discourse of Discontinuance

ERIC Educational Resources Information Center

McDevitt, Michael; Sindorf, Shannon

2012-01-01

The authors argue that journalism's uncertain identity in academia has made it vulnerable to unreflective instrumentalism in the digital era. They show how instrumentalism intertwined with the digital sublime constitutes a rhetorically resonate rationale for closing a journalism school. Evidence comes from documents and testimony associated with…

Theoretical Perspectives of How Digital Natives Learn

ERIC Educational Resources Information Center

Kivunja, Charles

2014-01-01

Marck Prensky, an authority on teaching and learning especially with the aid of Information and Communication Technologies, has referred to 21st century children born after 1980 as "Digital Natives". This paper reviews literature of leaders in the field to shed some light on theoretical perspectives of how Digital Natives learn and how…

Quiet Clean Short-haul Experimental Engine (QCSEE) over-the-wing engine and control simulation results

NASA Technical Reports Server (NTRS)

1978-01-01

A hybrid-computer simulation of the over the wing turbofan engine was constructed to develop the dynamic design of the control. This engine and control system includes a full authority digital electronic control using compressor stator reset to achieve fast thrust response and a modified Kalman filter to correct for sensor failures. Fast thrust response for powered-lift operations and accurate, fast responding, steady state control of the engine is provided. Simulation results for throttle bursts from 62 to 100 percent takeoff thrust predict that the engine will accelerate from 62 to 95 percent takeoff thrust in one second.

Energy Efficient Engine: Control system preliminary definition report

NASA Technical Reports Server (NTRS)

Howe, David C.

1986-01-01

The object of the Control Preliminary Definition Program was to define a preliminary control system concept as a part of the Energy Efficient Engine program. The program was limited to a conceptual definition of a full authority digital electronic control system. System requirements were determined and a control system was conceptually defined to these requirements. Areas requiring technological development were identified and a plan was established for implementing the identified technological features, including a control technology demonstration. A significant element of this program was a study of the potential benefits of closed-loop active clearance control, along with laboratory tests of candidate clearance sensor elements for a closed loop system.

Digital radiographic imaging: is the dental practice ready?

PubMed

Parks, Edwin T

2008-04-01

Digital radiographic imaging is slowly, but surely, replacing film-based imaging. It has many advantages over traditional imaging, but the technology also has some drawbacks. The author presents an overview of the types of digital image receptors available, image enhancement software and the range of costs for the new technology. PRACTICE IMPLICATIONS. The expenses associated with converting to digital radiographic imaging are considerable. The purpose of this article is to provide the clinician with an overview of digital radiographic imaging technology so that he or she can be an informed consumer when evaluating the numerous digital systems in the marketplace.

Developing an Integration Infrastructure for Distributed Engine Control Technologies

NASA Technical Reports Server (NTRS)

Culley, Dennis; Zinnecker, Alicia; Aretskin-Hariton, Eliot; Kratz, Jonathan

2014-01-01

Turbine engine control technology is poised to make the first revolutionary leap forward since the advent of full authority digital engine control in the mid-1980s. This change aims squarely at overcoming the physical constraints that have historically limited control system hardware on aero-engines to a federated architecture. Distributed control architecture allows complex analog interfaces existing between system elements and the control unit to be replaced by standardized digital interfaces. Embedded processing, enabled by high temperature electronics, provides for digitization of signals at the source and network communications resulting in a modular system at the hardware level. While this scheme simplifies the physical integration of the system, its complexity appears in other ways. In fact, integration now becomes a shared responsibility among suppliers and system integrators. While these are the most obvious changes, there are additional concerns about performance, reliability, and failure modes due to distributed architecture that warrant detailed study. This paper describes the development of a new facility intended to address the many challenges of the underlying technologies of distributed control. The facility is capable of performing both simulation and hardware studies ranging from component to system level complexity. Its modular and hierarchical structure allows the user to focus their interaction on specific areas of interest.

VHDL Modeling and Simulation of a Digital Image Synthesizer for Countering ISAR

DTIC Science & Technology

2003-06-01

This thesis discusses VHDL modeling and simulation of a full custom Application Specific Integrated Circuit (ASIC) for a Digital Image Synthesizer...necessary for a given application . With such a digital method, it is possible for a small ship to appear as large as an aircraft carrier or any high...INTRODUCTION TO DIGITAL IMAGE SYNTHESIZER (DIS) A. BACKGROUND The Digital Image Synthesizer (DIS) is an Application Specific Integrated Circuit

Subpicosecond Optical Digital Computation Using Conjugate Parametric Generators

DTIC Science & Technology

1989-03-31

Using Phase Conjugate Farametric Generators ..... 12. PERSONAL AUTHOR(S) Alfano, Robert- Eichmann . George; Dorsinville. Roger! Li. Yao 13a. TYPE OF...conjugation-based optical residue arithmetic processor," Y. Li, G. Eichmann , R. Dorsinville, and R. R. Alfano, Opt. Lett. 13, (1988). [2] "Parallel ultrafast...optical digital and symbolic computation via optical phase conjugation," Y. Li, G. Eichmann , R. Dorsinville, Appl. Opt. 27, 2025 (1988). [3

Learning via Game Design: From Digital to Card Games and Back Again

ERIC Educational Resources Information Center

Marchetti, Emanuela; Valente, Andrea

2015-01-01

In this paper we consider the problem of making design of digital games accessible to primary school children and their teachers, and we argue for the need of digital games that are easy to alter by young learners. We know from previous research projects that digital games do not enable children to express their creativity at full, in contrast…

Storytelling in the digital world: achieving higher-level learning objectives.

PubMed

Schwartz, Melissa R

2012-01-01

Nursing students are not passive media consumers but instead live in a technology ecosystem where digital is the language they speak. To prepare the next generation of nurses, educators must incorporate multiple technologies to improve higher-order learning. The author discusses the evolution and use of storytelling as part of the digital world and how digital stories can be aligned with Bloom's Taxonomy so that students achieve higher-level learning objectives.

A study of 60 patients with percutaneous trigger finger releases: clinical and ultrasonographic findings.

PubMed

Gulabi, D; Cecen, G S; Bekler, H I; Saglam, F; Tanju, N

2014-09-01

We present the clinical results and ultrasonographic findings of 61 trigger digits treated with percutaneous A1 pulley release. An endoscopic carpal tunnel knife was used for the release in the outpatient department. The mean follow-up period was 3.5 months. A total of 55 digits (90%) had complete relief of their triggering postoperatively. Six digits (10%) had Grade 2 triggering clinically in the early postoperative period.The complications included six cases of insufficient release (10%), scar sensitivity in one patient, short-term hypoaesthesia in three digits (5%), and flexor tendon laceration noted on postoperative ultrasonography in eight digits (13%). No neurovascular damage was noted on the postoperative ultrasonography. Ultrasonograpy provides information about tendon laceration and changes in thickness of the pulleys and confirm A1 pulley release after surgery, but it does not alter clinical decision-making. We believe that pre- and postoperative ultrasonograpy does not need to be included as a routine examination. © The Author(s) 2014.

Open access to scientific articles: a review of benefits and challenges.

PubMed

Björk, Bo-Christer

2017-03-01

The Internet has fundamentally changed the publishing of scholarly peer reviewed journals, and the way readers find and access articles. Digital access is nowadays the norm, in particular for researchers. The Internet has enabled a totally new business model, Open Access (OA), in which an article is openly available in full text for anyone with Internet access. This article reviews the different options to achieve this, whether by journals changing their revenue structures from subscription to publishing charges, or authors utilizing a number of options for posting OA versions of article manuscripts in repositories. It also discusses the regrettable emergence of "predatory" publishers, who spam academics, and make money by promising them rapid publication with only the semblance of peer review. The situation is further discussed from the viewpoints of different stakeholders, including academics as authors and readers, practicing physicians and the general public.

Distance Learning Using Digital Fiber Optics: Applications, Technologies, and Benefits.

ERIC Educational Resources Information Center

Currer, Joanne M.

Distance learning provides special or advanced classes in rural schools where declining population has led to decreased funding and fewer classes. With full-motion video using digital fiber, two or more sites are connected into a two-way, full-motion, video conference. The teacher can see and hear the students, and the students can see and hear…

Full-color digitized holography for large-scale holographic 3D imaging of physical and nonphysical objects.

PubMed

Matsushima, Kyoji; Sonobe, Noriaki

2018-01-01

Digitized holography techniques are used to reconstruct three-dimensional (3D) images of physical objects using large-scale computer-generated holograms (CGHs). The object field is captured at three wavelengths over a wide area at high densities. Synthetic aperture techniques using single sensors are used for image capture in phase-shifting digital holography. The captured object field is incorporated into a virtual 3D scene that includes nonphysical objects, e.g., polygon-meshed CG models. The synthetic object field is optically reconstructed as a large-scale full-color CGH using red-green-blue color filters. The CGH has a wide full-parallax viewing zone and reconstructs a deep 3D scene with natural motion parallax.

Recognizing and engineering digital-like logic gates and switches in gene regulatory networks.

PubMed

Bradley, Robert W; Buck, Martin; Wang, Baojun

2016-10-01

A central aim of synthetic biology is to build organisms that can perform useful activities in response to specified conditions. The digital computing paradigm which has proved so successful in electrical engineering is being mapped to synthetic biological systems to allow them to make such decisions. However, stochastic molecular processes have graded input-output functions, thus, bioengineers must select those with desirable characteristics and refine their transfer functions to build logic gates with digital-like switching behaviour. Recent efforts in genome mining and the development of programmable RNA-based switches, especially CRISPRi, have greatly increased the number of parts available to synthetic biologists. Improvements to the digital characteristics of these parts are required to enable robust predictable design of deeply layered logic circuits. Copyright © 2016 The Author(s). Published by Elsevier Ltd.. All rights reserved.

Rate of Unverifiable Publications Among Ophthalmology Residency Applicants Invited to Interview.

PubMed

Tamez, Heather M; Tauscher, Robert; Brown, Eric N; Wayman, Laura; Mawn, Louise A

2018-04-19

Unverifiable publications in applications for ophthalmology residencies could be a serious concern if they represent publication dishonesty. To determine the rate of unverifiable publications among applicants offered an interview. Retrospective review of 322 ophthalmology residency applications for entering classes 2012 to 2017 at Vanderbilt University School of Medicine, Nashville, Tennessee. Full-length publications reported in the applications were searched in PubMed, Google, Google Scholar, and directly on the journal's website. Applications were deemed unverifiable if there was no record of the publication by any of these means or if substantial discrepancies existed, such as incorrect authorship, incorrect journal, or a meaningful discrepancy in title or length (full-length article vs abstract). Inability to locate publication with search, incorrect author position, applicant not listed as an author, article being an abstract and not a published paper, substantial title discrepancy suggesting an alternative project, and incorrect journal. Of the 322 applicants offered interviews during the 6-year study period, 22 (6.8%) had 24 unverifiable publications. Two hundred thirty-nine of these applicants (74.2%) reported at least 1 qualifying publication; of this group, 22 (9.2%) had an unverifiable publication. The applications with unverifiable publications were evenly distributed across the years of the study (range, 2-6 per cycle; Pearson χ25 = 3.65; P = .60). Two applicants had 2 unverifiable publications each. Two of the 22 applicants (9.1%) with unverifiable publications were graduates of medical schools outside the United States. Among the unverifiable publications, the most common reason was inability to locate the publication (13 [54%]). Additional issues included abstract rather than full-length publication (5 [20.8%]), incorrect author position (4 [16.7%]), applicant not listed as an author on the publication (1 [4.2%]), and substantial title discrepancy (1 [4.2%]). One listed publication had an incorrect author position and incorrect journal (1 [4.2%]). Unverifiable publications among ophthalmology residency applicants is a persistent problem. Possible strategies to modify the review process include asking applicants to provide copies of their full-length works or the relevant PMCID (PubMed Central reference number) or DOI (digital object identifier) for their publications.

School Library Journal's 10 Best Digital Resources for 2009

ERIC Educational Resources Information Center

Brisco, Shonda

2009-01-01

The author presents 10 best digital resources for 2009. As librarians prepare for the next school year--or as public libraries develop the budget for a new fiscal year--these are the products for children and teens that should be advocated to add to one's digital collection. These include: (1) American Indian Experience; (2) Animoto…

Enhancing a Core Journal Collection for Digital Libraries

ERIC Educational Resources Information Center

Kovacevic, Ana; Devedzic, Vladan; Pocajt, Viktor

2010-01-01

Purpose: This paper aims to address the problem of enhancing the selection of titles offered by a digital library, by analysing the differences in these titles when they are cited by local authors in their publications and when they are listed in the digital library offer. Design/methodology/approach: Text mining techniques were used to identify…

The Popular Profile of the Digital Learner: Technology Use Patterns and Approaches to Learning

ERIC Educational Resources Information Center

Thompson, Penny Marie

2012-01-01

The purpose of this study was to investigate the claims made in the popular press about the "digital native" generation as learners. Because students' lives today are saturated with digital media at a time when their brains are still developing, many popular press authors claim that this generation of students thinks and learns…

The Digital Natives as Learners: Technology Use Patterns and Approaches to Learning

ERIC Educational Resources Information Center

Thompson, Penny

2013-01-01

This study investigated the claims made in the popular press about the "digital native" generation as learners. Because students' lives today are saturated with digital media at a time when their brains are still developing, many popular press authors claim that this generation of students thinks and learns differently than any generation that has…

Selecting "App"ealing and "App"ropriate Book Apps for Beginning Readers

ERIC Educational Resources Information Center

Cahill, Maria; McGill-Franzen, Anne

2013-01-01

Beginning with a brief rationale for selecting quality digital picture book apps for beginning readers, the authors describe the elements of digital picture books and provide a brief review of the instructional benefits of digital picture book use for beginning readers. They then present a detailed taxonomy for selecting quality picture book apps.…

Road Tripping down the Digital Preservation Highway, Part I: Hitting the Road

ERIC Educational Resources Information Center

Colati, Jessica Branco; Colati, Gregory C.

2011-01-01

In this inaugural column, the authors introduce Peter Palmer, erstwhile librarian at Bellaluna University who is being tasked with managing the library's and university's digital content as he begins his journey down the Digital Highway. As head of access services at Bellaluna University, Peter had been, by default, made responsible for managing…

The International Children's Digital Library Enhances the Multicultural Collection

ERIC Educational Resources Information Center

Lemmons, Karen

2009-01-01

In this article, the author talks about the International Children's Digital Library (ICDL), an online digital library which gives students an opportunity to read and learn about other cultures and countries in a different way. The library's web site (http://www.icdlbooks.org) was designed by children, with the guidance and expertise of adults.…

Digital Game-Based Learning Once Removed: Teaching Teachers

ERIC Educational Resources Information Center

Becker, Katrin

2007-01-01

In the spring of 2005, the author designed and taught a graduate-level course on digital game-based learning primarily for teachers. Teachers cannot be expected to embrace digital games as a tool for learning unless they have a sound understanding of the potential as well as the limitations, and are confident in their ability to use games…

The Development of Digital Resources by Library and Information Professionals and Historians: Two Case Studies from Northern Ireland

ERIC Educational Resources Information Center

White, Andy

2005-01-01

Purpose: This paper aims to use two case studies of digital archives designed by library and information professionals and historians to highlight the twin issues of academic authenticity and accuracy of digital representations. Design/methodology/approach: Using secondary literature, the author established a hypothesis about the way in which…

21 CFR 1311.45 - Requirements for registrants that allow powers of attorney to obtain CSOS digital certificates...

Code of Federal Regulations, 2011 CFR

2011-04-01

... attorney to obtain CSOS digital certificates under their DEA registration. 1311.45 Section 1311.45 Food and... registrants that allow powers of attorney to obtain CSOS digital certificates under their DEA registration. (a) A registrant that grants power of attorney must report to the DEA Certification Authority within 6...

Digital Artistry and Mediation: (Re)mixing Music Education

ERIC Educational Resources Information Center

Vakeva, Lauri

2012-01-01

There is no doubt that mediation has become a central issue outside formal music education. An outstanding example of this is digital music and its dependence on the new technologies of production, dissemination, and consuming. In this paper, the author argues that (1) mediation is one of the most important aspects of digital artistry and that (2)…

Critical Perspectives on Youth Digital Media Production: "Voice" and Representation in Educational Contexts

ERIC Educational Resources Information Center

Dahya, Negin

2017-01-01

This paper offers a critical discussion on voice and representation in youth digital media production in educational settings. The paper builds on existing calls from digital media and visual studies scholars to approach youth-made media with greater attention to context in production practices. In this discussion, the author addresses the…

A Digital Library in the Mid-Nineties, Ahead or On Schedule?

ERIC Educational Resources Information Center

Dijkstra, Joost

1994-01-01

Discussion of the future possibilities of digital library systems highlights digital projects developed at Tilburg University (Netherlands). Topics addressed include online access to databases; electronic document delivery; agreements between libraries and Elsevier Science publishers to provide journal articles; full text document delivery; and…

Solutions to Challenges Facing a University Digital Library and Press

PubMed Central

D'Alessandro, Michael P.; Galvin, Jeffrey R.; Colbert, Stephana I.; D'Alessandro, Donna M.; Choi, Teresa A.; Aker, Brian D.; Carlson, William S.; Pelzer, Gay D.

2000-01-01

During the creation of a university digital library and press intended to serve as a medical reference and education tool for health care providers and their patients, six distinct and complex digital publishing challenges were encountered. Over nine years, through a multidisciplinary approach, solutions were devised to the challenges of digital content ownership, management, mirroring, translation, interactions with users, and archiving. The result is a unique, author-owned, internationally mirrored, university digital library and press that serves as an authoritative medical reference and education tool for users around the world. The purpose of this paper is to share the valuable digital publishing lessons learned and outline the challenges facing university digital libraries and presses. PMID:10833161

A Preliminary Analysis of LANDSAT-4 Thematic Mapper Radiometric Performance

NASA Technical Reports Server (NTRS)

Justice, C.; Fusco, L.; Mehl, W.

1984-01-01

Analysis was performed to characterize the radiometry of three Thematic Mapper (TM) digital products of a scene of Arkansas. The three digital products examined were the NASA raw (BT) product, the radiometrically corrected (AT) product and the radiometrically and geometrically corrected (PT) product. The frequency distribution of the digital data; the statistical correlation between the bands; and the variability between the detectors within a band were examined on a series of image subsets from the full scene. The results are presented from one 1024 x 1024 pixel subset of Realfoot Lake, Tennessee which displayed a representative range of ground conditions and cover types occurring within the full frame image. Bands 1, 2 and 5 of the sample area are presented. The subsets were extracted from the three digital data products to cover the same geographic area. This analysis provides the first step towards a full appraisal of the TM radiometry being performed as part of the ESA/CEC contribution to the NASA/LIDQA program.

Building a Digital Library: A Technology Manager's Point of View.

ERIC Educational Resources Information Center

Shaw, Elizabeth J.

2000-01-01

Describes the Historic Pittsburgh project at the University of Pittsburgh, a joint project with the Historical Society of Western Pennsylvania to produce a digital collection of historical materials available on the Internet. Discusses costs; metadata; digitization and preservation of originals; full-text capabilities; scanning; quality review;…

Digital Libraries: Situating Use in Changing Information Infrastructure.

ERIC Educational Resources Information Center

Bishop, Ann Peterson; Neumann, Laura J.; Star, Susan Leigh; Merkel, Cecelia; Ignacio, Emily; Sandusky, Robert J.

2000-01-01

Reviews empirical studies about how digital libraries evolve for use in scientific and technical work based on the Digital Libraries Initiative (DLI) at the University of Illinois. Discusses how users meet infrastructure and document disaggregation; describes use of the DLI testbed of full text journal articles; and explains research methodology.…

Beyond Preservation: New Directions for Technological Innovation through Intangible Cultural Heritage

ERIC Educational Resources Information Center

Robbins, Christopher

2010-01-01

While many digitization projects are currently underway, to help preserve Indigenous traditions, few explore the full potential of the development of digital media and networked technology through Indigenous cultures. This paper outlines the three phases necessary for a robust digital preservation, promotion and growth project: 1) Straightforward…

Digital vs. conventional full-arch implant impressions: a comparative study.

PubMed

Amin, Sarah; Weber, Hans Peter; Finkelman, Matthew; El Rafie, Khaled; Kudara, Yukio; Papaspyridakos, Panos

2017-11-01

To test whether or not digital full-arch implant impressions with two different intra-oral scanners (CEREC Omnicam and True Definition) have the same accuracy as conventional ones. The hypothesis was that the splinted open-tray impressions would be more accurate than digital full-arch impressions. A stone master cast representing an edentulous mandible using five internal connection implant analogs (Straumann Bone Level RC, Basel, Switzerland) was fabricated. The three median implants were parallel to each other, the far left implant had 10°, and the far right had 15° distal angulation. A splinted open-tray technique was used for the conventional polyether impressions (n = 10) for Group 1. Digital impressions (n = 10) were taken with two intra-oral optical scanners (CEREC Omnicam and 3M True Definition) after connecting polymer scan bodies to the master cast for groups 2 and 3. Master cast and conventional impression test casts were digitized with a high-resolution reference scanner (Activity 880 scanner; Smart Optics, Bochum, Germany) to obtain digital files. Standard tessellation language (STL) datasets from the three test groups of digital and conventional impressions were superimposed with the STL dataset from the master cast to assess the 3D deviations. Deviations were recorded as root-mean-square error. To compare the master cast with conventional and digital impressions at the implant level, Welch's F-test was used together with Games-Howell post hoc test. Group I had a mean value of 167.93 μm (SD 50.37); Group II (Omnicam) had a mean value of 46.41 μm (SD 7.34); Group III (True Definition) had a mean value of 19.32 μm (SD 2.77). Welch's F-test was used together with the Games-Howell test for post hoc comparisons. Welch's F-test showed a significant difference between the groups (P < 0.001). The Games-Howell test showed statistically significant 3D deviations for all three groups (P < 0.001). Full-arch digital implant impressions using True Definition scanner and Omnicam were significantly more accurate than the conventional impressions with the splinted open-tray technique. Additionally, the digital impressions with the True Definition scanner had significantly less 3D deviations when compared with the Omnicam. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

2017 Guralp Affinity Digitizer Evaluation.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Merchant, Bion J.

Sandia National Laboratories has tested and evaluated two Guralp Affinity digitizers. The Affinity digitizers are intended to record sensor output for seismic and infrasound monitoring applications. The purpose of this digitizer evaluation is to measure the performance characteristics in such areas as power consumption, input impedance, sensitivity, full scale, self- noise, dynamic range, system noise, response, passband, and timing. The Affinity digitizers are being evaluated for potential use in the International Monitoring System (IMS) of the Comprehensive Nuclear Test-Ban-Treaty Organization (CTBTO).

Cathedrals, Casinos, Colleges and Classrooms: Questions for the Architects of Digital Campuses

ERIC Educational Resources Information Center

McCluskey, Frank; Winter, Melanie

2013-01-01

The bricks and mortar classroom has a long and storied history. The digital classroom is so new and different it may be wrong to even call it a "classroom". The authors argue that architecture influences behavior. So in constructing our new digital classrooms we must pay attention to the architecture and what job we want that…

Digital Hearing Aids From the Perspective of One Consumer/Audiologist

PubMed Central

Ross, Mark

2007-01-01

Recent developments in hearing aids are reviewed in the context of the author's personal experience as an audiologist and as a hearing aid wearer. The need for evidence of benefit specific to digital signal processing in hearing aids is stressed, as well as addressing cost-benefit ratios in view of the high cost of digital hearing aids. PMID:17301335

Another Look at Plagiarism in the Digital Age: Is It Time to Turn in My Badge?

ERIC Educational Resources Information Center

Colvin, Benie B.

2007-01-01

In this article, the author talks about plagiarism in the digital age and how plagiarism challenges teachers in their relationship with students. With a growing body of digital commentary and the looming dominance of electronic writing, current professional consensus in the plagiarism dilemma appears dubious and the slope gets more slippery every…

Digital Diversity: A Basic Tool with Lots of Uses

ERIC Educational Resources Information Center

Coy, Mary

2006-01-01

In this article the author relates how the digital camera has altered the way she teaches and the way her students learn. She also emphasizes the importance for teachers to have software that can edit, print, and incorporate photos. She cites several instances in which a digital camera can be used: (1) PowerPoint presentations; (2) Open house; (3)…

"How They Really Talk": Two Students' Perspectives on Digital Literacies in the Writing Classroom

ERIC Educational Resources Information Center

Amicucci, Ann N.

2014-01-01

This article responds to the need for more student voices in digital literacies research by discussing the results of interviews with two college students concerning the roles that their non-academic digital literacy practices can play in first-year college writing courses. The author reviews recent literature that has indicated that value of…

Sensitive and inexpensive digital DNA analysis by microfluidic enrichment of rolling circle amplified single-molecules.

PubMed

Kühnemund, Malte; Hernández-Neuta, Iván; Sharif, Mohd Istiaq; Cornaglia, Matteo; Gijs, Martin A M; Nilsson, Mats

2017-05-05

Single molecule quantification assays provide the ultimate sensitivity and precision for molecular analysis. However, most digital analysis techniques, i.e. droplet PCR, require sophisticated and expensive instrumentation for molecule compartmentalization, amplification and analysis. Rolling circle amplification (RCA) provides a simpler means for digital analysis. Nevertheless, the sensitivity of RCA assays has until now been limited by inefficient detection methods. We have developed a simple microfluidic strategy for enrichment of RCA products into a single field of view of a low magnification fluorescent sensor, enabling ultra-sensitive digital quantification of nucleic acids over a dynamic range from 1.2 aM to 190 fM. We prove the broad applicability of our analysis platform by demonstrating 5-plex detection of as little as ∼1 pg (∼300 genome copies) of pathogenic DNA with simultaneous antibiotic resistance marker detection, and the analysis of rare oncogene mutations. Our method is simpler, more cost-effective and faster than other digital analysis techniques and provides the means to implement digital analysis in any laboratory equipped with a standard fluorescent microscope. © The Author(s) 2017. Published by Oxford University Press on behalf of Nucleic Acids Research.

Opportunities and Constraints in Disseminating Qualitative Research in Web 2.0 Virtual Environments.

PubMed

Hays, Charles A; Spiers, Judith A; Paterson, Barbara

2015-11-01

The Web 2.0 digital environment is revolutionizing how users communicate and relate to each other, and how information is shared, created, and recreated within user communities. The social media technologies in the Web 2.0 digital ecosystem are fundamentally changing the opportunities and dangers in disseminating qualitative health research. The social changes influenced by digital innovations shift dissemination from passive consumption to user-centered, apomediated cooperative approaches, the features of which are underutilized by many qualitative researchers. We identify opportunities new digital media presents for knowledge dissemination activities including access to wider audiences with few gatekeeper constraints, new perspectives, and symbiotic relationships between researchers and users. We also address some of the challenges in embracing these technologies including lack of control, potential for unethical co-optation of work, and cyberbullying. Finally, we offer solutions to enhance research dissemination in sustainable, ethical, and effective strategies. © The Author(s) 2015.

WTEC monograph on instrumentation, control and safety systems of Canadian nuclear facilities

NASA Technical Reports Server (NTRS)

Uhrig, Robert E.; Carter, Richard J.

1993-01-01

This report updates a 1989-90 survey of advanced instrumentation and controls (I&C) technologies and associated human factors issues in the U.S. and Canadian nuclear industries carried out by a team from Oak Ridge National Laboratory (Carter and Uhrig 1990). The authors found that the most advanced I&C systems are in the Canadian CANDU plants, where the newest plant (Darlington) has digital systems in almost 100 percent of its control systems and in over 70 percent of its plant protection system. Increased emphasis on human factors and cognitive science in modern control rooms has resulted in a reduced workload for the operators and the elimination of many human errors. Automation implemented through digital instrumentation and control is effectively changing the role of the operator to that of a systems manager. The hypothesis that properly introducing digital systems increases safety is supported by the Canadian experience. The performance of these digital systems has been achieved using appropriate quality assurance programs for both hardware and software development. Recent regulatory authority review of the development of safety-critical software has resulted in the creation of isolated software modules with well defined interfaces and more formal structure in the software generation. The ability of digital systems to detect impending failures and initiate a fail-safe action is a significant safety issue that should be of special interest to nuclear utilities and regulatory authorities around the world.

Planning for optical disk technology with digital cartography.

USGS Publications Warehouse

Light, D.L.

1986-01-01

A major shortfall that still exists in digital systems is the need for very large mass storage capacity. The decade of the 1980s has introduced laser optical disk storage technology, which may be the breakthrough needed for mass storage. This paper addresses system concepts for digital cartography during the transition period. Emphasis will be placed on determining USGS mass storage requirements and introducing laser optical disk technology for handling storage problems for digital data in this decade.-from Author

Collaborative learning model inquiring based on digital game

NASA Astrophysics Data System (ADS)

Yuan, Jiugen; Xing, Ruonan

2012-04-01

With the development of computer education software, digital educational game has become an important part in our life, entertainment and education. Therefore how to make full use of digital game's teaching functions and educate through entertainment has become the focus of current research. The thesis make a connection between educational game and collaborative learning, the current popular teaching model, and concludes digital game-based collaborative learning model combined with teaching practice.

MAGIC Computer Simulation. Volume 1: User Manual

DTIC Science & Technology

1970-07-01

vulnerability and MAGIC programs. A three-digit code is assigned to each component of the target, such as armor, gun tube; and a two-digit code is assigned to...A review of the subject Magic Computer Simulation User and Analyst Manuals has been conducted based upon a request received from the US Army...1970 4. TITLE AND SUBTITLE MAGIC Computer Simulation 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT

Digital security technology simplified.

PubMed

Scaglione, Bernard J

2007-01-01

Digital security technology is making great strides in replacing analog and other traditional security systems including CCTV card access, personal identification and alarm monitoring applications. Like any new technology, the author says, it is important to understand its benefits and limitations before purchasing and installing, to ensure its proper operation and effectiveness. This article is a primer for security directors on how digital technology works. It provides an understanding of the key components which make up the foundation for digital security systems, focusing on three key aspects of the digital security world: the security network, IP cameras and IP recorders.

The digital darkroom, part 3: digital presentation in plastic surgery.

PubMed

Galdino, G M; Chiaramonte, M; Klatsky, S A

2001-01-01

We summarize here the third and final part of our series on the Digital Darkroom. In this part, we review the use of digital technology for medical and other presentations, including the kinds of equipment available, the advantages and disadvantages of digital projection, and the most common pitfalls encountered in preparing and presenting material in digital presentations. The full text of the complete series, including expanded illustrative material and complete bibliographic documentation, is now available at our journal web site at . Please see page 39 for instructions on how to access Aesthetic Surgery Journal Online and view the entire series.

Digital Libraries: Universal Access to Human Knowledge. Report to the President.

ERIC Educational Resources Information Center

National Coordination Office for Information Technology Research and Development, Arlington, VA.

This report to the President and Congress provides an overview of digital libraries. The following related findings are discussed: the full potential of today's digital libraries to support the national challenge transformations has not yet been realized; the federal government can and should do much more to further the science, technology, and…

76 FR 44821 - Digital Low Power Television, Television Translator, and Television Booster Stations and To Amend...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-27

...] Digital Low Power Television, Television Translator, and Television Booster Stations and To Amend Rules... this proceeding in order to allow a timely and successful completion of the low power television digital transition. Although Congress established a hard deadline of June 12, 2009 for full power stations...

The Use of Digitized Images in Developing Software for Young Children.

ERIC Educational Resources Information Center

Wright, June L.

1992-01-01

Parents and children interacted with computer-based representations of a park, one with animated picture graphics and one with digitized full motion video. Children who interacted with the digitized representation replayed the program more and showed a stronger cognitive focus on the representation than did the other children. (LB)

The Use, Users, and Role of Abstracts in the Digital Scholarly Environment

ERIC Educational Resources Information Center

Nicholas, David; Huntington, Paul; Jamali, Hamid R.

2007-01-01

Utilizing transactional log data taken from digital journal libraries and attitudinal and demographic data derived from a questionnaire survey, the article pieces together evidence concerning the use, users, and role of abstracts in a digital environment. It shows that abstracts are used in large quantities, even when full-text viewing facilities…

Comparative study of functional and aesthetically outcomes of reverse digital artery and reverse dorsal homodigital island flaps for fingertip repair.

PubMed

Chen, Q Z; Sun, Y C; Chen, J; Kong, J; Gong, Y P; Mao, T

2015-11-01

This retrospective study was designed to compare functional and cosmetic outcomes of the reverse digital artery island flap and reverse dorsal homodigital island flap in fingertip repair. A total of 23 patients were followed for 24 to 30 months. The reverse digital artery island flap was used in 12 patients, and reverse dorsal homodigital island flap in another 11 patients. Flap sensibility was assessed using the Semmes-Weinstein monofilament test and static 2-point discrimination test. Patient satisfaction, active motion of the finger joints, complications and cold intolerance were evaluated. The static 2-point discrimination and Michigan Hand Outcomes Questionnaire (appearance) of the fingers treated with a reverse digital artery flap were significantly better than those with a reverse dorsal homodigital flap. The static 2-point discrimination of the skin-grafted donor sides after dorsal homodigital flap were poorer than that in the contralateral finger. No significant differences were found between the two flaps for pressure or touch sensibility, active ranges of digital motion, complications and cold intolerance. III. © The Author(s) 2015.

The Rolls Royce Allison RB580 turbofan - Matching the market requirement for regional transport

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sadler, J.H.R.; Peacock, N.J.; Snyder, L.

1989-01-01

The RB580 high bypass turbofan engine has a thrust growth capability to 10,000 lb and has been optimized for efficient operation in regional markets involving 50-70 seat airliners with higher-than-turboprop cruise speeds. The two-spool engine configuration achieves an overall pressure ratio of 24 and features a single-stage wide-chord fan for high efficiency/low noise operation. The highly modular design of the configuration facilitates maintenance and repair; a dual-redundant full-authority digital electronic control system is incorporated. An SFC reduction of the order of 10 percent at cruise thrust is achieved, relative to current engines of comparable thrust class.

More than a Game...Teaching in the Gamic Mode: Disciplinary Knowledge, Digital Literacy, and Collaboration

ERIC Educational Resources Information Center

Clyde, Jerremie; Wilkinson, Glenn R.

2012-01-01

The gamic mode is an innovative way of authoring scholarly history that goes beyond the printed text or digital simulations by using digital game technologies to allow the reader to interact with a scholarly argument through meaningful choice and trial and error. The gamic mode makes the way in which the past is constructed as history explicit by…

Forward and Backward Digit Span Interaction With Race and IQ: Predictions from Jensen's Theory

ERIC Educational Resources Information Center

Jensen, Arthur R.; Figueroa, Richard A.

1975-01-01

From Jensen's two-level theory of mental abilities it was predicted that forward digit span (FDS) should correlate less with IQ than backward digit span (BDS), and age and race should interact with FDS-BDS, with FDS-BDS difference decreasing as a function of age and a greater white-black difference in BDS than in FDS. (Author/BJG)

From Digital Divide to Digital Equity: Learners' ICT Competence in Four Primary Schools in Cape Town, South Africa

ERIC Educational Resources Information Center

Gudmundsdottir, G. B.

2010-01-01

This study explores factors influencing the digital divide in four schools in Cape Town, South Africa. Three of the schools are for disadvantaged learners whereas the fourth was previously for whites only. All the schools use ICT in their curriculum delivery and thereby support the emphasis of provincial educational authorities on ICT access for…

Multiscale image processing and antiscatter grids in digital radiography.

PubMed

Lo, Winnie Y; Hornof, William J; Zwingenberger, Allison L; Robertson, Ian D

2009-01-01

Scatter radiation is a source of noise and results in decreased signal-to-noise ratio and thus decreased image quality in digital radiography. We determined subjectively whether a digitally processed image made without a grid would be of similar quality to an image made with a grid but without image processing. Additionally the effects of exposure dose and of a using a grid with digital radiography on overall image quality were studied. Thoracic and abdominal radiographs of five dogs of various sizes were made. Four acquisition techniques were included (1) with a grid, standard exposure dose, digital image processing; (2) without a grid, standard exposure dose, digital image processing; (3) without a grid, half the exposure dose, digital image processing; and (4) with a grid, standard exposure dose, no digital image processing (to mimic a film-screen radiograph). Full-size radiographs as well as magnified images of specific anatomic regions were generated. Nine reviewers rated the overall image quality subjectively using a five-point scale. All digitally processed radiographs had higher overall scores than nondigitally processed radiographs regardless of patient size, exposure dose, or use of a grid. The images made at half the exposure dose had a slightly lower quality than those made at full dose, but this was only statistically significant in magnified images. Using a grid with digital image processing led to a slight but statistically significant increase in overall quality when compared with digitally processed images made without a grid but whether this increase in quality is clinically significant is unknown.

Point of care use of a personal digital assistant for patient consultation management: experience of an intravenous resource nurse team in a major Canadian teaching hospital.

PubMed

Bosma, Laine; Balen, Robert M; Davidson, Erin; Jewesson, Peter J

2003-01-01

The development and integration of a personal digital assistant (PDA)-based point-of-care database into an intravenous resource nurse (IVRN) consultation service for the purposes of consultation management and service characterization are described. The IVRN team provides a consultation service 7 days a week in this 1000-bed tertiary adult care teaching hospital. No simple, reliable method for documenting IVRN patient care activity and facilitating IVRN-initiated patient follow-up evaluation was available. Implementation of a PDA database with exportability of data to statistical analysis software was undertaken in July 2001. A Palm IIIXE PDA was purchased and a three-table, 13-field database was developed using HanDBase software. During the 7-month period of data collection, the IVRN team recorded 4868 consultations for 40 patient care areas. Full analysis of service characteristics was conducted using SPSS 10.0 software. Team members adopted the new technology with few problems, and the authors now can efficiently track and analyze the services provided by their IVRN team.

Data Concentrator

NASA Technical Reports Server (NTRS)

Willett, Mike

2015-01-01

Orbital Research, Inc., developed, built, and tested three high-temperature components for use in the design of a data concentrator module in distributed turbine engine control. The concentrator receives analog and digital signals related to turbine engine control and communicates with a full authority digital engine control (FADEC) or high-level command processor. This data concentrator follows the Distributed Engine Controls Working Group (DECWG) roadmap for turbine engine distributed controls communication development that operates at temperatures at least up to 225 C. In Phase I, Orbital Research developed detailed specifications for each component needed for the system and defined the total system specifications. This entailed a combination of system design, compiling existing component specifications, laboratory testing, and simulation. The results showed the feasibility of the data concentrator. Phase II of this project focused on three key objectives. The first objective was to update the data concentrator design modifications from DECWG and prime contractors. Secondly, the project defined requirements for the three new high-temperature, application-specific integrated circuits (ASICs): one-time programmable (OTP), transient voltage suppression (TVS), and 3.3V. Finally, the project validated each design by testing over temperature and under load.

E-Procurement, from Project to Practice: Empirical Evidence from the French Public Sector

NASA Astrophysics Data System (ADS)

Beauvallet, Godefroy; Boughzala, Younès; Assar, Saïd

Public procurement constitutes a significant portion of national PIB in all countries and electronic platforms for supporting public transactions are an important application of e-government. In France, new regulations since 2005 are pushing public and private actors to adopt electronic means for handling all steps of the purchase process in public organisations. Based on quantitative and qualitative surveys made between 2005 and 2008, this chapter presents the general topic of e-procurement and specifically discusses the problem of e-procurement adoption in public institutions in France. The conclusions of these investigations spanning a three years period, are that public e-procurement is constantly progressing, although difficulties related to insufficient technical skills and the complexity of the juridical context hinder seriously its full adoption. They also show that a digital and an organisational divide is appearing between big administrations which have the adequate resources and skills to fully adopt e-procurement, and small administration (i.e. local authorities) which are still reluctant or unable to conduct a purchase in a digital manner.

Full-scale system impact analysis: Digital document storage project

NASA Technical Reports Server (NTRS)

1989-01-01

The Digital Document Storage Full Scale System can provide cost effective electronic document storage, retrieval, hard copy reproduction, and remote access for users of NASA Technical Reports. The desired functionality of the DDS system is highly dependent on the assumed requirements for remote access used in this Impact Analysis. It is highly recommended that NASA proceed with a phased, communications requirement analysis to ensure that adequate communications service can be supplied at a reasonable cost in order to validate recent working assumptions upon which the success of the DDS Full Scale System is dependent.

Student Satisfaction with Asynchronous Learning

ERIC Educational Resources Information Center

Dziuban, Charles; Moskal, Patsy; Brophy, Jay; Shea, Peter

2007-01-01

The authors discuss elements that potentially impact student satisfaction with asynchronous learning: the media culture, digital, personal and mobile technologies, student learning preferences, pedagogy, complexities of measurement, and the digital generation. They describe a pilot study to identify the underlying dimensions of student…

Information Professionals in the Digital Age.

ERIC Educational Resources Information Center

Cronin, Blaise

1998-01-01

Describes the strategic significance of information and intelligence management to socioeconomic growth. Considers implications in terms of human and structural intellectual capital development. Provides demand- and supply-side analyses of the knowledge and skills required of information professionals in the digital age. (Author)

Digital books.

PubMed

Wink, Diane M

2011-01-01

In this bimonthly series, the author examines how nurse educators can use the Internet and Web-based computer technologies such as search, communication, and collaborative writing tools; social networking and social bookmarking sites; virtual worlds; and Web-based teaching and learning programs. This article describes digital books.

47 CFR 101.511 - Permissible services.

Code of Federal Regulations, 2010 CFR

2010-10-01

... authorization. (b) Stations may render any kind of digital communications service consistent with the Commission... Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES 24 GHz Service and Digital Electronic Message Service § 101.511 Permissible services. (a...

GIRAS TO MOSS INTERFACE.

USGS Publications Warehouse

DiNardo, Thomas P.; Jackson, R. Alan

1984-01-01

An analysis of land use change for an area in Boulder County, Colorado, was conducted using digital cartographic data. The authors selected data in the Geographic Information Retrieval and Analysis System (GIRAS) format which is digitized from the 1:250,000-scale land use and land cover map series. The Map Overlay and Statistical System (MOSS) was used as an analytical tool for the study. The authors describe the methodology used in converting the GIRAS file into a MOSS format and the activities associated with the conversion.

Digital Breast Tomosynthesis and the Challenges of Implementing an Emerging Breast Cancer Screening Technology Into Clinical Practice.

PubMed

Lee, Christoph I; Lehman, Constance D

2016-11-01

Emerging imaging technologies, including digital breast tomosynthesis, have the potential to transform breast cancer screening. However, the rapid adoption of these new technologies outpaces the evidence of their clinical and cost-effectiveness. The authors describe the forces driving the rapid diffusion of tomosynthesis into clinical practice, comparing it with the rapid diffusion of digital mammography shortly after its introduction. They outline the potential positive and negative effects that adoption can have on imaging workflow and describe the practice management challenges when incorporating tomosynthesis. The authors also provide recommendations for collecting evidence supporting the development of policies and best practices. Copyright © 2013 American College of Radiology. Published by Elsevier Inc. All rights reserved.

Research on models of Digital City geo-information sharing platform

NASA Astrophysics Data System (ADS)

Xu, Hanwei; Liu, Zhihui; Badawi, Rami; Liu, Haiwang

2009-10-01

The data related to Digital City has the property of large quantity, isomerous and multiple dimensions. In the original copy method of data sharing, the application departments can not solve the problem of data updating and data security in real-time. This paper firstly analyzes various patterns of sharing Digital City information and on this basis the author provides a new shared mechanism of GIS Services, with which the data producers provide Geographic Information Services to the application users through Web API, so as to the data producers and the data users can do their best respectively. Then the author takes the application system in supermarket management as an example to explain the correctness and effectiveness of the method provided in this paper.

Lack of correlation between reaction speed and analytical sensitivity in isothermal amplification reveals the value of digital methods for optimization: validation using digital real-time RT-LAMP.

PubMed

Khorosheva, Eugenia M; Karymov, Mikhail A; Selck, David A; Ismagilov, Rustem F

2016-01-29

In this paper, we asked if it is possible to identify the best primers and reaction conditions based on improvements in reaction speed when optimizing isothermal reactions. We used digital single-molecule, real-time analyses of both speed and efficiency of isothermal amplification reactions, which revealed that improvements in the speed of isothermal amplification reactions did not always correlate with improvements in digital efficiency (the fraction of molecules that amplify) or with analytical sensitivity. However, we observed that the speeds of amplification for single-molecule (in a digital device) and multi-molecule (e.g. in a PCR well plate) formats always correlated for the same conditions. Also, digital efficiency correlated with the analytical sensitivity of the same reaction performed in a multi-molecule format. Our finding was supported experimentally with examples of primer design, the use or exclusion of loop primers in different combinations, and the use of different enzyme mixtures in one-step reverse-transcription loop-mediated amplification (RT-LAMP). Our results show that measuring the digital efficiency of amplification of single-template molecules allows quick, reliable comparisons of the analytical sensitivity of reactions under any two tested conditions, independent of the speeds of the isothermal amplification reactions. © The Author(s) 2015. Published by Oxford University Press on behalf of Nucleic Acids Research.

Electro-optic architecture (EOA) for sensors and actuators in aircraft propulsion systems

NASA Technical Reports Server (NTRS)

Glomb, W. L., Jr.

1989-01-01

Results of a study to design an optimal architecture for electro-optical sensing and control in advanced aircraft and space systems are described. The propulsion full authority digital Electronic Engine Control (EEC) was the focus for the study. The recommended architecture is an on-engine EEC which contains electro-optic interface circuits for fiber-optic sensors on the engine. Size and weight are reduced by multiplexing arrays of functionally similar sensors on a pair of optical fibers to common electro-optical interfaces. The architecture contains common, multiplex interfaces to seven sensor groups: (1) self luminous sensors; (2) high temperatures; (3) low temperatures; (4) speeds and flows; (5) vibration; (6) pressures; and (7) mechanical positions. Nine distinct fiber-optic sensor types were found to provide these sensing functions: (1) continuous wave (CW) intensity modulators; (2) time division multiplexing (TDM) digital optic codeplates; (3) time division multiplexing (TDM) analog self-referenced sensors; (4) wavelength division multiplexing (WDM) digital optic code plates; (5) wavelength division multiplexing (WDM) analog self-referenced intensity modulators; (6) analog optical spectral shifters; (7) self-luminous bodies; (8) coherent optical interferometers; and (9) remote electrical sensors. The report includes the results of a trade study including engine sensor requirements, environment, the basic sensor types, and relevant evaluation criteria. These figures of merit for the candidate interface types were calculated from the data supplied by leading manufacturers of fiber-optic sensors.

The Translucent Cadaver: An Evaluation of the Use of Full Body Digital X-Ray Images and Drawings in Surface Anatomy Education

ERIC Educational Resources Information Center

Kotze, Sanet Henriet; Mole, Calvin Gerald; Greyling, Linda Magdalena

2012-01-01

It has been noted by staff at the Faculty of Health Sciences, Stellenbosch University that medical students neglect the study of surface anatomy during dissection. This study reports on the novel use of Lodox[R] Statscan[R] images in anatomical education, particularly the teaching of surface anatomy. Full body digital X-ray images (Lodox Statscan)…

Two-bit trinary full adder design based on restricted signed-digit numbers

NASA Astrophysics Data System (ADS)

Ahmed, J. U.; Awwal, A. A. S.; Karim, M. A.

1994-08-01

A 2-bit trinary full adder using a restricted set of a modified signed-digit trinary numeric system is designed. When cascaded together to design a multi-bit adder machine, the resulting system is able to operate at a speed independent of the size of the operands. An optical non-holographic content addressable memory based on binary coded arithmetic is considered for implementing the proposed adder.

The New Engines of Learning.

ERIC Educational Resources Information Center

Negroponto, Nicholas

1995-01-01

According to the author's book "Being Digital," our world is shifting from atoms to bits. Digitally rendered information, combined with personal computing power and networks, will make computers active participants in our everyday lives. "Teaching-disabled" classrooms will move from passivity to active participation and…

Assessment of Digital Media Use in the Adolescent Psychiatric Evaluation.

PubMed

Carson, Nicholas J; Gansner, Meredith; Khang, Jeane

2018-04-01

Digital media (also called "new media") have become an important ecosystem in which adolescents develop biologically, psychologically, and socially. When assessing adolescents in the psychiatric interview, a nuanced understanding of digital media use can inform a more accurate formulation. However, there are few published resources to help the psychiatrist assess the impact of digital media during the initial adolescent interview. The authors propose an innovation on the traditional psychiatric assessment that addresses teen Internet use and digital media habits. Through this enhanced assessment, mental health clinicians can improve upon current interviewing practices of twenty-first century adolescents. Copyright © 2017 Elsevier Inc. All rights reserved.

Single-shot speckle reduction in numerical reconstruction of digitally recorded holograms: comment.

PubMed

Maycock, Jonathan; Hennelly, Bryan; McDonald, John

2015-09-01

We comment on a recent Letter by Hincapie et al. [Opt. Lett.40, 1623 (2015)], in which the authors proposed a method to reduce the speckle noise in digital holograms. This method was previously published by us in Maycock ["Improving reconstructions of digital holograms," Ph.D. thesis (National University of Ireland, 2012)] and Maycock and Hennelly [Improving Reconstructions of Digital Holograms: Speckle Reduction and Occlusions in Digital Holography (Lambert Academic, 2014)]. We also wish to highlight an important limitation of the method resulting from the superposition of different perspectives of the object/scene, which was not addressed in their Letter.

Digital Mammography Breast Dosimetry Using Copper-Doped Lithium Fluoride (LiF:MCP) Thermoluminescent Dosimeters (TLDs)

DTIC Science & Technology

2003-06-18

Mammography Breast Dosimetry Using Copper-Doped Lithium Fluoride (LiF:MCP) Thermoluminescent Dosimeters ( TLDs ) 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c...34Digital Mammography Breast Dosimetry Using Copper- Doped Lithium Fluoride (LiF:MCP) Thermoluminescent Dosimeters ( TLDs )" Author: LT John J. Tomon...Title of Thesis: " Digital Mammography Breast Dosimetry Using Copper-Doped Lithium Fluoride (LiF:MCP) Thermoluminescent

Design of a low cost earth resources system

NASA Technical Reports Server (NTRS)

Faust, N. L.; Furman, M. D.; Spann, G. W. (Principal Investigator)

1978-01-01

The author has identified the following significant results. Survey results indicated that users of remote sensing data in the Southeastern U.S. were increasingly turning to digital processing techniques. All the states surveyed have had some involvement in projects using digitally processed data. Even those states which do not yet have in-house capabilities for digital processing were extremely interested in and were planning to develop such capabilities.

Digital images in the map revision process

NASA Astrophysics Data System (ADS)

Newby, P. R. T.

Progress towards the adoption of digital (or softcopy) photogrammetric techniques for database and map revision is reviewed. Particular attention is given to the Ordnance Survey of Great Britain, the author's former employer, where digital processes are under investigation but have not yet been introduced for routine production. Developments which may lead to increasing automation of database update processes appear promising, but because of the cost and practical problems associated with managing as well as updating large digital databases, caution is advised when considering the transition to softcopy photogrammetry for revision tasks.

A comparison study of image features between FFDM and film mammogram images

PubMed Central

Jing, Hao; Yang, Yongyi; Wernick, Miles N.; Yarusso, Laura M.; Nishikawa, Robert M.

2012-01-01

Purpose: This work is to provide a direct, quantitative comparison of image features measured by film and full-field digital mammography (FFDM). The purpose is to investigate whether there is any systematic difference between film and FFDM in terms of quantitative image features and their influence on the performance of a computer-aided diagnosis (CAD) system. Methods: The authors make use of a set of matched film-FFDM image pairs acquired from cadaver breast specimens with simulated microcalcifications consisting of bone and teeth fragments using both a GE digital mammography system and a screen-film system. To quantify the image features, the authors consider a set of 12 textural features of lesion regions and six image features of individual microcalcifications (MCs). The authors first conduct a direct comparison on these quantitative features extracted from film and FFDM images. The authors then study the performance of a CAD classifier for discriminating between MCs and false positives (FPs) when the classifier is trained on images of different types (film, FFDM, or both). Results: For all the features considered, the quantitative results show a high degree of correlation between features extracted from film and FFDM, with the correlation coefficients ranging from 0.7326 to 0.9602 for the different features. Based on a Fisher sign rank test, there was no significant difference observed between the features extracted from film and those from FFDM. For both MC detection and discrimination of FPs from MCs, FFDM had a slight but statistically significant advantage in performance; however, when the classifiers were trained on different types of images (acquired with FFDM or SFM) for discriminating MCs from FPs, there was little difference. Conclusions: The results indicate good agreement between film and FFDM in quantitative image features. While FFDM images provide better detection performance in MCs, FFDM and film images may be interchangeable for the purposes of training CAD algorithms, and a single CAD algorithm may be applied to either type of images. PMID:22830771

Quantum key management

DOEpatents

Hughes, Richard John; Thrasher, James Thomas; Nordholt, Jane Elizabeth

2016-11-29

Innovations for quantum key management harness quantum communications to form a cryptography system within a public key infrastructure framework. In example implementations, the quantum key management innovations combine quantum key distribution and a quantum identification protocol with a Merkle signature scheme (using Winternitz one-time digital signatures or other one-time digital signatures, and Merkle hash trees) to constitute a cryptography system. More generally, the quantum key management innovations combine quantum key distribution and a quantum identification protocol with a hash-based signature scheme. This provides a secure way to identify, authenticate, verify, and exchange secret cryptographic keys. Features of the quantum key management innovations further include secure enrollment of users with a registration authority, as well as credential checking and revocation with a certificate authority, where the registration authority and/or certificate authority can be part of the same system as a trusted authority for quantum key distribution.

ERM Ideas and Innovations: Digital Repository Management as ERM

ERIC Educational Resources Information Center

Pinkas, María M.; Lin, Na

2014-01-01

This article describes the application of electronic resources management (ERM) to digital repository management at the Health Sciences and Human Services Library at the University of Maryland, Baltimore. The authors discuss electronic resources management techniques, through the application of "Techniques for Electronic Management,"…

7 CFR 1740.9 - Grant application.

Code of Federal Regulations, 2011 CFR

2011-01-01

... authorized the initiation of digital broadcasting at the project sites. In the event that an FCC construction... advance of funds for that site conditional upon the submission of a construction permit. (j) Compliance... Digital Transition,” and must include the Environmental Questionnaire/Certification, available from RUS...

The challenges and opportunities in medical education for digital 'natives' and 'immigrants' in Scotland and abroad.

PubMed

de Wet, Carl; Yelland, Michael

2015-11-01

Although the digital revolution only started towards the end of the twentieth century, it has already dramatically shifted our world away from traditional industries and ushered in a new age of information. Virtually every aspect of our modern lives has either been transformed or challenged, including medical education. This article describes three of the important factors that are causing seismic changes in medical education in Scotland and abroad. The first is the new generation of 'digital natives' that are arriving in medical schools. In response, faculty members have had to become 'digital immigrants' and adapt their pedagogies. Second, the rise of social media has allowed the creation of virtual learning environments and communities that augment but also compete with traditional brick-and-mortar institutions. Finally, an ever-increasing range of e-learning resources promise freely accessible and up-to-date evidence, but their sheer volume and lack of standardisation will require careful curation. © The Author(s) 2015.

Single-shot full resolution region-of-interest (ROI) reconstruction in image plane digital holographic microscopy

NASA Astrophysics Data System (ADS)

Singh, Mandeep; Khare, Kedar

2018-05-01

We describe a numerical processing technique that allows single-shot region-of-interest (ROI) reconstruction in image plane digital holographic microscopy with full pixel resolution. The ROI reconstruction is modelled as an optimization problem where the cost function to be minimized consists of an L2-norm squared data fitting term and a modified Huber penalty term that are minimized alternately in an adaptive fashion. The technique can provide full pixel resolution complex-valued images of the selected ROI which is not possible to achieve with the commonly used Fourier transform method. The technique can facilitate holographic reconstruction of individual cells of interest from a large field-of-view digital holographic microscopy data. The complementary phase information in addition to the usual absorption information already available in the form of bright field microscopy can make the methodology attractive to the biomedical user community.

Digital pathology access and usage in the UK: results from a national survey on behalf of the National Cancer Research Institute's CM-Path initiative.

PubMed

Williams, Bethany Jill; Lee, Jessica; Oien, Karin A; Treanor, Darren

2018-05-01

To canvass the UK pathology community to ascertain current levels of digital pathology usage in clinical and academic histopathology departments, and prevalent attitudes to digital pathology. A 15-item survey was circulated to National Health Service and academic pathology departments across the UK using the SurveyMonkey online survey tool. Responses were sought at a departmental or institutional level. Where possible, departmental heads were approached and asked to complete the survey, or forward it to the most relevant individual in their department. Data were collected over a 6-month period from February to July 2017. 41 institutes from across the UK responded to the survey. 60% (23/39) of institutions had access to a digital pathology scanner, and 60% (24/40) had access to a digital pathology workstation. The most popular applications of digital pathology in current use were undergraduate and postgraduate teaching, research and quality assurance. Investigating the deployment of digital pathology in their department was identified as a high or highest priority by 58.5% of institutions, with improvements in efficiency, turnaround times, reporting times and collaboration in their institution anticipated by the respondents. Access to funding for initial hardware, software and staff outlay, pathologist training and guidance from the Royal College of Pathologists were identified as factors that could enable respondent institutions to increase their digital pathology usage. Interest in digital pathology adoption in the UK is high, with usage likely to increase in the coming years. In light of this, pathologists are seeking more guidance on safe usage. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

A Call to Digital Health Practitioners: New Guidelines Can Help Improve the Quality of Digital Health Evidence

PubMed Central

Agarwal, Smisha; Lefevre, Amnesty E

2017-01-01

Background Despite the rapid proliferation of health interventions that employ digital tools, the evidence on the effectiveness of such approaches remains insufficient and of variable quality. To address gaps in the comprehensiveness and quality of reporting on the effectiveness of digital programs, the mHealth Technical Evidence Review Group (mTERG), convened by the World Health Organization, proposed the mHealth Evidence Reporting and Assessment (mERA) checklist to address existing gaps in the comprehensiveness and quality of reporting on the effectiveness of digital health programs. Objective We present an overview of the mERA checklist and encourage researchers working in the digital health space to use the mERA checklist for reporting their research. Methods The development of the mERA checklist consisted of convening an expert group to recommend an appropriate approach, convening a global expert review panel for checklist development, and pilot-testing the checklist. Results The mERA checklist consists of 16 core mHealth items that define what the mHealth intervention is (content), where it is being implemented (context), and how it was implemented (technical features). Additionally, a 29-item methodology checklist guides authors on reporting critical aspects of the research methodology employed in the study. We recommend that the core mERA checklist is used in conjunction with an appropriate study-design specific checklist. Conclusions The mERA checklist aims to assist authors in reporting on digital health research, guide reviewers and policymakers in synthesizing evidence, and guide journal editors in assessing the completeness in reporting on digital health studies. An increase in transparent and rigorous reporting can help identify gaps in the conduct of research and understand the effects of digital health interventions as a field of inquiry. PMID:28986340

Free: Why Authors Are Giving Books Away on the Internet

ERIC Educational Resources Information Center

Hilton, John, III; Wiley, David

2010-01-01

With increasing frequency, authors in academic and non-academic fields are releasing their books for free digital distribution. Anecdotal evidence suggests that exposure to both authors and books increases when books are available as free downloads, and that print sales are not negatively affected. For this study we interviewed ten authors to…

Digital pulse processing in Mössbauer spectroscopy

NASA Astrophysics Data System (ADS)

Veiga, A.; Grunfeld, C. M.

2014-04-01

In this work we present some advances towards full digitization of the detection subsystem of a Mössbauer transmission spectrometer. We show how, using adequate instrumentation, preamplifier output of a proportional counter can be digitized with no deterioration in spectrum quality, avoiding the need of a shaping amplifier. A pipelined architecture is proposed for a digital processor, which constitutes a versatile platform for the development of pulse processing techniques. Requirements for minimization of the analog processing are considered and experimental results are presented.

User guide for the digital control system of the NASA/Langley Research Center's 13-inch Magnetic Suspension and Balance System

NASA Technical Reports Server (NTRS)

Britcher, Colin P.

1987-01-01

The technical background to the development of the digital control system of the NASA/Langley Research Center's 13 inch Magnetic Supension and Balance Systen (MSBS) is reviewed. The implementation of traditional MSBS control algorithms in digital form is examined. Extensive details of the 13-inch MSBS digital controller and related hardware are given, together with the introductory instructions for systems operators. Full listings of software are included in the Appendices.

Modified signed-digit arithmetic based on redundant bit representation.

PubMed

Huang, H; Itoh, M; Yatagai, T

1994-09-10

Fully parallel modified signed-digit arithmetic operations are realized based on redundant bit representation of the digits proposed. A new truth-table minimizing technique is presented based on redundant-bitrepresentation coding. It is shown that only 34 minterms are enough for implementing one-step modified signed-digit addition and subtraction with this new representation. Two optical implementation schemes, correlation and matrix multiplication, are described. Experimental demonstrations of the correlation architecture are presented. Both architectures use fixed minterm masks for arbitrary-length operands, taking full advantage of the parallelism of the modified signed-digit number system and optics.

Optical Measurement Techniques for Rocket Engine Testing and Component Applications: Digital Image Correlation and Dynamic Photogrammetry

NASA Technical Reports Server (NTRS)

Gradl, Paul

2016-01-01

NASA Marshall Space Flight Center (MSFC) has been advancing dynamic optical measurement systems, primarily Digital Image Correlation, for extreme environment rocket engine test applications. The Digital Image Correlation (DIC) technology is used to track local and full field deformations, displacement vectors and local and global strain measurements. This technology has been evaluated at MSFC through lab testing to full scale hotfire engine testing of the J-2X Upper Stage engine at Stennis Space Center. It has been shown to provide reliable measurement data and has replaced many traditional measurement techniques for NASA applications. NASA and AMRDEC have recently signed agreements for NASA to train and transition the technology to applications for missile and helicopter testing. This presentation will provide an overview and progression of the technology, various testing applications at NASA MSFC, overview of Army-NASA test collaborations and application lessons learned about Digital Image Correlation.

Digital Gunnery: How Combat Vehicle Gunnery Training Creates a Model for Training the Mission Command System.

DTIC Science & Technology

2017-06-09

DIGITAL GUNNERY: HOW COMBAT VEHICLE GUNNERY TRAINING CREATES A MODEL FOR TRAINING THE MISSION COMMAND SYSTEM A thesis presented...Training Creates a Model for Training the Mission Command System 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S...digital systems that give commanders an unprecedented ability to understand and lead in the battlefields where they operate. Unfortunately, units

Is digital photography an accurate and precise method for measuring range of motion of the shoulder and elbow?

PubMed

Russo, Russell R; Burn, Matthew B; Ismaily, Sabir K; Gerrie, Brayden J; Han, Shuyang; Alexander, Jerry; Lenherr, Christopher; Noble, Philip C; Harris, Joshua D; McCulloch, Patrick C

2018-03-01

Accurate measurements of shoulder and elbow motion are required for the management of musculoskeletal pathology. The purpose of this investigation was to compare three techniques for measuring motion. The authors hypothesized that digital photography would be equivalent in accuracy and show higher precision compared to the other two techniques. Using infrared motion capture analysis as the reference standard, shoulder flexion/abduction/internal rotation/external rotation and elbow flexion/extension were measured using visual estimation, goniometry, and digital photography on 10 fresh frozen cadavers. These measurements were performed by three physical therapists and three orthopaedic surgeons. Accuracy was defined by the difference from the reference standard (motion capture analysis), while precision was defined by the proportion of measurements within the authors' definition of clinical significance (10° for all motions except for elbow extension where 5° was used). Analysis of variance (ANOVA), t-tests, and chi-squared tests were used. Although statistically significant differences were found in measurement accuracy between the three techniques, none of these differences met the authors' definition of clinical significance. Precision of the measurements was significantly higher for both digital photography (shoulder abduction [93% vs. 74%, p < 0.001], shoulder internal rotation [97% vs. 83%, p = 0.001], and elbow flexion [93% vs. 65%, p < 0.001]) and goniometry (shoulder abduction [92% vs. 74%, p < 0.001] and shoulder internal rotation [94% vs. 83%, p = 0.008]) than visual estimation. Digital photography was more precise than goniometry for measurements of elbow flexion only [93% vs. 76%, p < 0.001]. There was no clinically significant difference in measurement accuracy between the three techniques for shoulder and elbow motion. Digital photography showed higher measurement precision compared to visual estimation for shoulder abduction, shoulder internal rotation, and elbow flexion. However, digital photography was only more precise than goniometry for measurements of elbow flexion. Overall digital photography shows equivalent accuracy to visual estimation and goniometry, but with higher precision than visual estimation. Copyright © 2017. Published by Elsevier B.V.

Tactile Toe Agnosia and Percept of a "Missing Toe" in Healthy Humans.

PubMed

Cicmil, Nela; Meyer, Achim P; Stein, John F

2016-03-01

A disturbance of body representation is central to many neurological and psychiatric conditions, but the mechanisms by which body representations are constructed by the brain are not fully understood. We demonstrate a directional disturbance in tactile identification of the toes in healthy humans. Nineteen young adult participants underwent tactile stimulation of the digits with the eyes closed and verbally reported the identity of the stimulated digit. In the majority of individuals, responses to the second and third toes were significantly biased toward the laterally neighboring digit. The directional bias was greater for the nondominant foot and was affected by the identity of the immediately preceding stimulated toe. Unexpectedly, 9/19 participants reported the subjective experience of a "missing toe" or "missing space" during the protocol. These findings challenge current models of somatosensory localization, as they cannot be explained simply by a lack of distinct representations for toes compared with fingers, or by overt toe-finger correspondences. We present a novel theory of equal spatial representations of digit width combined with a "preceding neighbor" effect to explain the observed phenomena. The diagnostic implications for neurological disorders that involve "digit agnosia" are discussed. © The Author(s) 2015.

The interactive contents authoring system for terrestrial digital multimedia broadcasting

NASA Astrophysics Data System (ADS)

Cheong, Won-Sik; Ahn, Sangwoo; Cha, Jihun; Moon, Kyung Ae

2007-02-01

This paper introduces an interactive contents authoring system which can easily and conveniently produce interactive contents for the Terrestrial Digital Multimedia Broadcasting (T-DMB). For interactive broadcasting service, T-DMB adopted MPEG-4 Systems technology. In order to the interactive service becomes flourishing on the market, various types of interactive contents should be well provided prior to the service. In MPEG-4 Systems specification, broadcasting contents are described by the combination of a large number of nodes, routes and descriptors. In order to provide interactive data services through the T-DMB network, it is essential to have an interactive contents authoring system which allows contents authors to compose interactive contents easily and conveniently even if they lack any background on MPEG-4 Systems technology. The introduced authoring system provides powerful graphical user interface and produces interactive broadcasting contents in the forms of binary and textual format. Therefore, the interactive contents authoring system presented in this paper would vastly contribute to the flourishing interactive service.

Digital Simulation and Modelling.

ERIC Educational Resources Information Center

Hawthorne, G. B., Jr.

A basically tutorial point of view is taken in this general discussion. The author examines the basic concepts and principles of simulation and modelling and the application of digital computers to these tasks. Examples of existing simulations, a discussion of the applicability and feasibility of simulation studies, a review of simulation…

Complex Digital Visual Systems

ERIC Educational Resources Information Center

Sweeny, Robert W.

2013-01-01

This article identifies possibilities for data visualization as art educational research practice. The author presents an analysis of the relationship between works of art and digital visual culture, employing aspects of network analysis drawn from the work of Barabási, Newman, and Watts (2006) and Castells (1994). Describing complex network…

Opportunities and Challenges with Digital Open Badges

ERIC Educational Resources Information Center

Farmer, Tadd; West, Richard E.

2016-01-01

With increasing interest in competency and outcome-based education, and the blending of formal and informal learning, there is increasing need for credentials to match these learning paradigms. In this article, the authors discuss the benefits, challenges, and potential future directions for open digital badges--one potential alternative…

Locating the Semiotic Power of Multimodality

ERIC Educational Resources Information Center

Hull, Glynda A.; Nelson, Mark Evan

2005-01-01

This article reports research that attempts to characterize what is powerful about digital multimodal texts. Building from recent theoretical work on understanding the workings and implications of multimodal communication, the authors call for a continuing empirical investigation into the roles that digital multimodal texts play in real-world…

School Counselors' Experiences Working with Digital Natives: A Qualitative Study

ERIC Educational Resources Information Center

Gallo, Laura L.

2017-01-01

To better understand school counselors' experiences related to students' use of social media, the authors conducted a qualitative study, utilizing a phenomenological approach, with eight practicing high school counselors. Three major themes emerged from the study: "the digital cultural divide," "frustration and fear," and…

77 FR 4559 - Information Collection Being Reviewed by the Federal Communications Commission

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-30

... the Commission's Rules to Deregulate the Equipment Authorization Requirements for Digital Devices. (a... authorizing equipment for marketing. (d) Finally, testing and documentation of compliance are needed to...

School Quality in the Cloud: Guidelines for Authorizing Virtual Charter Schools. Authorizing Matters. Issue Brief. Cyber Series

ERIC Educational Resources Information Center

Lin, Margaret

2011-01-01

This Issue Brief, an update of "Authorizing Virtual Charter Schools: Rules of the Road on the Digital Highway" by Gregg Vanourek, is part of NACSA's Cyber series, which addresses issues in policy and practice that concern authorizing online schools and blended learning. It aims to improve authorizer understanding and oversight of online…

Problem-based, peer-to-peer global mental health e-learning between the UK and Somaliland: a pilot study.

PubMed

Murphy, Roberta; Clissold, Elliot; Keynejad, Roxanne C

2017-11-01

WHO's mental health gap action programme intervention guide (mhGAP-IG) is an evidence-based tool aimed at front-line health workers in low-income and middle-income countries (LMICs). Its potential to improve global mental health education, especially through digital technologies, has been little studied. Problem-based learning (PBL) is usually conducted face-to-face, but its remote application could facilitate cross-cultural education. To evaluate PBL, applied to peer-to-peer global mental health e-learning (Aqoon), using mhGAP-IG. Twelve pairs of UK and Somaliland medical students completed the full programme. Participants self-directedly met online, via the low-bandwidth Medicine Africa website, for PBL-style tutorials focused on modules of the mhGAP-IG, V.2.0. Preparticipation and postparticipation surveys used mixed methods to evaluate Aqoon, including the Attitudes Toward Psychiatry (ATP-30) instrument. Median ATP-30 scores for Somaliland (82.0 vs 95.0, p=0.003) and UK students (82.0 vs 95.0, p = 0.011) improved significantly following Aqoon. Qualitative feedback showed that participants valued peer connectivity and learning about cultural and psychosocial differences in their partner's country. Somaliland students were motivated by clinical learning and UK students by global health education. Feedback on the PBL structure was positive. Digital PBL represents an innovative method to extend the benefits of mhGAP-IG beyond front-line clinical staff, to healthcare students in LMICs. Educational resource limitations in LMICs may be overcome using digital platforms and PBL. Replication with non-medical healthcare students is the next step for this model to explore Aqoon's relevance to pressing global mental health workforce challenges. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

47 CFR 301.1 - Program purposes.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Telecommunication NATIONAL TELECOMMUNICATIONS AND INFORMATION ADMINISTRATION, DEPARTMENT OF COMMERCE DIGITAL-TO... boxes. After February 17, 2009, the Federal Communications Commission will require that all full-power television stations in the United States broadcast using digital television technology. Consumers who wish to...

System identification of jet engines

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sugiyama, N.

2000-01-01

System identification plays an important role in advanced control systems for jet engines, in which controls are performed adaptively using data from the actual engine and the identified engine. An identification technique for jet engine using the Constant Gain Extended Kalman Filter (CGEKF) is described. The filter is constructed for a two-spool turbofan engine. The CGEKF filter developed here can recognize parameter change in engine components and estimate unmeasurable variables over whole flight conditions. These capabilities are useful for an advanced Full Authority Digital Electric Control (FADEC). Effects of measurement noise and bias, effects of operating point and unpredicted performancemore » change are discussed. Some experimental results using the actual engine are shown to evaluate the effectiveness of CGEKF filter.« less

YADCLAN: yet another digitally-controlled linear artificial neuron.

PubMed

Frenger, Paul

2003-01-01

This paper updates the author's 1999 RMBS presentation on digitally controlled linear artificial neuron design. Each neuron is based on a standard operational amplifier having excitatory and inhibitory inputs, variable gain, an amplified linear analog output and an adjustable threshold comparator for digital output. This design employs a 1-wire serial network of digitally controlled potentiometers and resistors whose resistance values are set and read back under microprocessor supervision. This system embodies several unique and useful features, including: enhanced neuronal stability, dynamic reconfigurability and network extensibility. This artificial neuronal is being employed for feature extraction and pattern recognition in an advanced robotic application.

Shape and 3D acoustically induced vibrations of the human eardrum characterized by digital holography

NASA Astrophysics Data System (ADS)

Khaleghi, Morteza; Furlong, Cosme; Cheng, Jeffrey Tao; Rosowski, John J.

2014-07-01

The eardrum or Tympanic Membrane (TM) transfers acoustic energy from the ear canal (at the external ear) into mechanical motions of the ossicles (at the middle ear). The acousto-mechanical-transformer behavior of the TM is determined by its shape and mechanical properties. For a better understanding of hearing mysteries, full-field-of-view techniques are required to quantify shape, nanometer-scale sound-induced displacement, and mechanical properties of the TM in 3D. In this paper, full-field-of-view, three-dimensional shape and sound-induced displacement of the surface of the TM are obtained by the methods of multiple wavelengths and multiple sensitivity vectors with lensless digital holography. Using our developed digital holographic systems, unique 3D information such as, shape (with micrometer resolution), 3D acoustically-induced displacement (with nanometer resolution), full strain tensor (with nano-strain resolution), 3D phase of motion, and 3D directional cosines of the displacement vectors can be obtained in full-field-ofview with a spatial resolution of about 3 million points on the surface of the TM and a temporal resolution of 15 Hz.

Sustaining Motivation for Japanese "Kanji" Learning: Can Digital Games Help?

ERIC Educational Resources Information Center

Nesbitt, Dallas; Müller, Amanda

2016-01-01

Educational digital games are often presented at Technology in Language Education conferences. The games are entertaining and are backed by research detailing how games can improve the learning experience through active critical learning, learner interaction, competition, challenge, and high learner motivation. The authors, inspired by such…

Newcomers Developing English Literacy through Historical Thinking and Digitized Primary Sources

ERIC Educational Resources Information Center

Franquiz, Maria E.; Salinas, Cinthia S.

2011-01-01

The traditional approach to the education of newcomer students separates English language development from content instruction. It is assumed that English language proficiency is a prerequisite for subject-matter learning. The authors take the alternate view that the integration of historical thinking and digitized primary sources enhances English…

"No DH, No Interview"

ERIC Educational Resources Information Center

Pannapacker, William

2012-01-01

In this article, the author discusses digital humanities (DH) and what future it holds for graduate students who are riding the digital-humanities bandwagon. He spoke with several graduate students about their interest in the field: how they got into it and began their first projects. Laura Mandell, director of the Initiative for Digital…

Digitizing Craft: Creative Writing Studies and New Media--A Proposal

ERIC Educational Resources Information Center

Koehler, Adam

2013-01-01

This article identifies and examines a digital arm of creative writing studies and organizes that proposal into four categories through which to theorize the "craft" of creative production, each borrowed from Tim Mayers's "(Re)Writing Craft: Composition, Creative Writing, and the Future of English Studies": process, genre, author, and…

Increasing Accessibility by Pooling Digital Resources

ERIC Educational Resources Information Center

Cushion, Steve

2004-01-01

There are now many CALL authoring packages that can create interactive websites and a large number of language teachers are writing materials for the whole range of such packages. Currently, each product stores its data in different formats thus hindering interoperability, pooling of digital resources and moving between software packages based in…

[The improved design of table operating box of digital subtraction angiography device].

PubMed

Qi, Xianying; Zhang, Minghai; Han, Fengtan; Tang, Feng; He, Lemin

2009-12-01

In this paper are analyzed the disadvantages of CGO-3000 digital subtraction angiography table Operating Box. The authors put forward a communication control scheme between single-chip microcomputer(SCM) and programmable logic controller(PLC). The details of hardware and software of communication are given.

Everyone Learns from Everyone: Collaborative and Interdisciplinary Professional Development in Digital Literacy

ERIC Educational Resources Information Center

Hobbs, Renee; Coiro, Julie

2016-01-01

Hobbs and Coiro describe a new approach to the professional development of educators, librarians, and media professionals that emphasizes the value of collaborative, interdisciplinary relationships. The authors explore why creative collaboration using digital media texts, tools, and technologies is vital to support the professional development of…

Early Writing in the Research Mode via Digital Modeling of Rivers.

ERIC Educational Resources Information Center

Snow, Robin Scott

1991-01-01

Author describes an individual research project involving digital modeling of graded river profiles as part of a sophomore-level geomorphology class. The three-week project gives students the opportunity to choose research topics, design experiments to test ideas, interpret results, and write a research report. (PR)

Environmental Thought, the Language of Sustainability, and Digital Watches.

ERIC Educational Resources Information Center

Jickling, Bob

2001-01-01

Examines the limitations associated with the language of sustainability and their implications for environmental thinking. Explores what sustainability is not by using the idea of digital watches as a metaphor. Uses contemporary examples from advertising, curriculum development, and wildlife management to illustrate the central theme. (Author/SAH)

Critical Thinking: Foundational for Digital Literacies and Democracy

ERIC Educational Resources Information Center

Gainer, Jesse

2012-01-01

This column addresses the importance of developing critical thinking to meet the demands of 21st-century literacies and participatory democracy. The author argues for a critical approach to digital literacies that explores the sociological nature of literacy practices. Students examine examples of new literacies and analyze how ideologies are…

What Educators Should Know about Teaching Digital Storytelling

ERIC Educational Resources Information Center

Robin, Bernard R.; McNeil, Sara G.

2012-01-01

In this paper, the authors present some of the most important lessons they have learned from teaching courses, conducting workshops, writing articles, and supervising graduate student research on the educational uses of digital storytelling. The guidelines described here are categorized within the ADDIE instructional design framework and are…

From Real Challenges to Virtual Reality: Realizing Your Collection through Digital Partnership

ERIC Educational Resources Information Center

Johnson, Jennifer; Mandity, Edward

2010-01-01

In fall 2008, a collaborative partnership was formed between the libraries of two Indiana universities--Marian College's (now Marian University) Mother Theresa Hackelmeier Memorial Library, and the University Library at Indiana University-Purdue University Indianapolis (IUPUI). The authors discuss the digital nature of this collaboration, which…

Preserving History in a Digital World

ERIC Educational Resources Information Center

Baumann, Jim

2012-01-01

Stanford University's (California) Julie Sweetkind-Singer is a recognized authority on digital preservation, and has been honored by the Library of Congress for her work in the field. She currently serves as both the assistant director of Stanford's Geospatial, Cartographic and Scientific Data and Services and as head of the Branner Earth Sciences…

Educating the First Digital Generation. Educate Us

ERIC Educational Resources Information Center

Harwood, Paul G.; Asal, Victor

2007-01-01

Asal and Harwood explore how today's information technology is changing how teachers educate and are educated. Focusing on the United States, with useful insights from the classroom digital revolution in a few other places (the United Kingdom, Australia, and India), the authors investigate the impact of today's technologies on education--how they…

California Digital Library in Twitter-Land

ERIC Educational Resources Information Center

Starr, Joan

2010-01-01

In October 2009, California Digital Library (CDL), where the author serves as manager of strategic and project planning, jumped into the world of social networking by joining Twitter. From Twitter, the CDL staff publish the content of their monthly newsletter, "CDLINFO News," and also additional content created by CDL programs and…

21 CFR 1311.10 - Eligibility to obtain a CSOS digital certificate.

Code of Federal Regulations, 2011 CFR

2011-04-01

... obtain a CSOS digital certificate from the DEA Certification Authority to sign electronic orders for controlled substances. (a) The person who signed the most recent DEA registration application or renewal... by a DEA registrant to sign orders for one or more schedules of controlled substances. ...

Video Making, Production Pedagogies, and Educational Policy

ERIC Educational Resources Information Center

Smythe, Suzanne; Toohey, Kelleen; Dagenais, Diane

2016-01-01

The promise of "21st century learning" is that digital technologies will transform traditional learning and mobilize skills deemed necessary in an emerging digital culture. In two case studies of video making, one in a Grade 4 classroom, and one in an adult literacy setting, the authors develop the concept of "production…

Milne "en Masse": A Case Study in Digitizing Large Image Collections

ERIC Educational Resources Information Center

Harkema, Craig; Avery, Cheryl

2015-01-01

In December 2012, the University of Saskatchewan Library's University Archives and Special Collections acquired the complete image collection of Courtney Milne, a professional photographer whose worked encompassed documentary, abstract and fine art photographs. From acquisition to digital curation, the authors identify, outline, and discuss the…

Digital Story (Re)telling Using Graded Readers and Smartphones

ERIC Educational Resources Information Center

Enokida, Kazumichi

2016-01-01

Extensive reading and digital storytelling can utilise "the power of stories" effectively to enhance learners' receptive and productive skills. For the past five years, the author has been working on a classroom project combining these two activities, as a way of integrating Information and Communications Technology (ICT) into his…

Preparation and Presentation of Digital Maps in Raster Format

USGS Publications Warehouse

Edwards, K.; Batson, R.M.

1980-01-01

A set of algorithms has been developed at USGS Flagstaff for displaying digital map data in raster format. The set includes: FILLIN, which assigns a specified attribute code to units of a map which have been outlined on a digitizer and converted to raster format; FILBND, which removes the outlines; ZIP, which adds patterns to the map units; and COLOR, which provides a simplified process for creating color separation plates for either photographic or lithographic reproduction. - Authors

Computer Program User’s Manual for FIREFINDER Digital Topographic Data Verification Library Dubbing System. Volume II. Dubbing.

DTIC Science & Technology

1982-01-29

N - Nw .VA COMPUTER PROGRAM USER’S MANUAL FOR . 0FIREFINDER DIGITAL TOPOGRAPHIC DATA VERIFICATION LIBRARY DUBBING SYSTEM VOLUME II DUBBING 29 JANUARY...Digital Topographic Data Verification Library Dubbing System, Volume II, Dubbing 6. PERFORMING ORG. REPORT NUMER 7. AUTHOR(q) S. CONTRACT OR GRANT...Software Library FIREFINDER Dubbing 20. ABSTRACT (Continue an revWee *Ide II necessary end identify by leek mauber) PThis manual describes the computer

Exploration of operator method digital optical computers for application to NASA

NASA Technical Reports Server (NTRS)

1990-01-01

Digital optical computer design has been focused primarily towards parallel (single point-to-point interconnection) implementation. This architecture is compared to currently developing VHSIC systems. Using demonstrated multichannel acousto-optic devices, a figure of merit can be formulated. The focus is on a figure of merit termed Gate Interconnect Bandwidth Product (GIBP). Conventional parallel optical digital computer architecture demonstrates only marginal competitiveness at best when compared to projected semiconductor implements. Global, analog global, quasi-digital, and full digital interconnects are briefly examined as alternative to parallel digital computer architecture. Digital optical computing is becoming a very tough competitor to semiconductor technology since it can support a very high degree of three dimensional interconnect density and high degrees of Fan-In without capacitive loading effects at very low power consumption levels.

Introducing students to digital geological mapping: A workflow based on cheap hardware and free software

NASA Astrophysics Data System (ADS)

Vrabec, Marko; Dolžan, Erazem

2016-04-01

The undergraduate field course in Geological Mapping at the University of Ljubljana involves 20-40 students per year, which precludes the use of specialized rugged digital field equipment as the costs would be way beyond the capabilities of the Department. A different mapping area is selected each year with the aim to provide typical conditions that a professional geologist might encounter when doing fieldwork in Slovenia, which includes rugged relief, dense tree cover, and moderately-well- to poorly-exposed bedrock due to vegetation and urbanization. It is therefore mandatory that the digital tools and workflows are combined with classical methods of fieldwork, since, for example, full-time precise GNSS positioning is not viable under such circumstances. Additionally, due to the prevailing combination of complex geological structure with generally poor exposure, students cannot be expected to produce line (vector) maps of geological contacts on the go, so there is no need for such functionality in hardware and software that we use in the field. Our workflow therefore still relies on paper base maps, but is strongly complemented with digital tools to provide robust positioning, track recording, and acquisition of various point-based data. Primary field hardware are students' Android-based smartphones and optionally tablets. For our purposes, the built-in GNSS chips provide adequate positioning precision most of the time, particularly if they are GLONASS-capable. We use Oruxmaps, a powerful free offline map viewer for the Android platform, which facilitates the use of custom-made geopositioned maps. For digital base maps, which we prepare in free Windows QGIS software, we use scanned topographic maps provided by the National Geodetic Authority, but also other maps such as aerial imagery, processed Digital Elevation Models, scans of existing geological maps, etc. Point data, like important outcrop locations or structural measurements, are entered into Oruxmaps as waypoints. Students are also encouraged to directly measure structural data with specialized Android apps such as the MVE FieldMove Clino. Digital field data is exported from Oruxmaps to Windows computers primarily in the ubiquitous GPX data format and then integrated in the QGIS environment. Recorded GPX tracks are also used with the free Geosetter Windows software to geoposition and tag any digital photographs taken in the field. With minimal expenses, our workflow provides the students with basic familiarity and experience in using digital field tools and methods. The workflow is also practical enough for the prevailing field conditions of Slovenia that the faculty staff is using it in geological mapping for scientific research and consultancy work.

Clinical Neuropathology Views - 2/2016: Digital networking in European neuropathology: An initiative to facilitate truly interactive consultations.

PubMed

Idoate, Miguel A; García-Rojo, Marcial

2016-01-01

Digital technology is progressively changing our vision of the practice of neuropathology. There are a number of facts that support the introduction of digital neuropathology. With the development of wholeslide imaging (WSI) systems the difficulties involved in implementing a neuropathology network have been solved. A relevant difficulty has been image standardization, but an open digital image communication protocol defined by the Digital Imaging and Communications in Medicine (DICOM) standard is already a reality. The neuropathology network should be established in Europe because it is the expected geographic context for relationships among European neuropathologists. There are several limitations in the implementation of a digital neuropathology consultancy network such as financial support, operational costs, legal issues, and technical assistance of clients. All of these items have been considered and should be solved before implementing the proposal. Finally, the authors conclude that a European digital neuropathology network should be created for patients' benefit.

Exploring digital professionalism.

PubMed

Ellaway, Rachel H; Coral, Janet; Topps, David; Topps, Maureen

2015-01-01

The widespread use of digital media (both computing devices and the services they access) has blurred the boundaries between our personal and professional lives. Contemporary students are the last to remember a time before the widespread use of the Internet and they will be the first to practice in a largely e-health environment. This article explores concepts of digital professionalism and their place in contemporary medical education, and proposes a series of principles of digital professionalism to guide teaching, learning and practice in the healthcare professions. Despite the many risks and fears surrounding their use, digital media are not an intrinsic threat to medical professionalism. Professionals should maintain the capacity for deliberate, ethical, and accountable practice when using digital media. The authors describe a digital professionalism framework structured around concepts of proficiency, reputation, and responsibility. Digital professionalism can be integrated into medical education using strategies based on awareness, alignment, assessment, and accountability. These principles of digital professionalism provide a way for medical students and medical practitioners to embrace the positive aspects of digital media use while being mindful and deliberate in its use to avoid or minimize any negative consequences.

Impact of digital intraoral scan strategies on the impression accuracy using the TRIOS Pod scanner.

PubMed

Müller, Philipp; Ender, Andreas; Joda, Tim; Katsoulis, Joannis

2016-04-01

Little information is available on the impact of different scan strategies on the accuracy of full-arch scans with intraoral scanners. The aim of this in-vitro study was to investigate the trueness and precision of full-arch maxillary digital impressions comparing three scan strategies. Three scan strategies (A, B, and C) were applied each five times on one single model (A, first buccal surfaces, return from occlusal-palatal; B, first occlusal-palatal, return buccal; C, S-type one-way). The TRIOS Pod scanner (3shape, Copenhagen, Denmark) with a color detector was used for these digital impressions. A cast of a maxillary dentate jaw was fabricated and scanned with an industrial reference scanner. This full-arch data record was digitally superimposed with the test scans (trueness) and within-group comparison was performed for each group (precision). The values within the 90/10 percentiles from the digital superimposition were used for calculation and group comparisons with nonparametric tests (ANOVA, post-hoc Bonferroni). The trueness (mean ± standard deviation) was 17.9 ± 16.4 μm for scan strategy A, 17.1 ± 13.7 μm for B, and 26.8 ± 14.7 μm for C without statistically significant difference. The precision was lowest for scan strategy A (35.0 ± 51.1 μm) and significantly different to B (7.9 ± 5.6 μm) and C (8.5 ± 6.3 μm). Scan strategy B may be recommended as it provides the highest trueness and precision in full-arch scans and therefore minimizes inaccuracies in the final reconstruction.

Precision of guided scanning procedures for full-arch digital impressions in vivo.

PubMed

Zimmermann, Moritz; Koller, Christina; Rumetsch, Moritz; Ender, Andreas; Mehl, Albert

2017-11-01

System-specific scanning strategies have been shown to influence the accuracy of full-arch digital impressions. Special guided scanning procedures have been implemented for specific intraoral scanning systems with special regard to the digital orthodontic workflow. The aim of this study was to evaluate the precision of guided scanning procedures compared to conventional impression techniques in vivo. Two intraoral scanning systems with implemented full-arch guided scanning procedures (Cerec Omnicam Ortho; Ormco Lythos) were included along with one conventional impression technique with irreversible hydrocolloid material (alginate). Full-arch impressions were taken three times each from 5 participants (n = 15). Impressions were then compared within the test groups using a point-to-surface distance method after best-fit model matching (OraCheck). Precision was calculated using the (90-10%)/2 quantile and statistical analysis with one-way repeated measures ANOVA and post hoc Bonferroni test was performed. The conventional impression technique with alginate showed the lowest precision for full-arch impressions with 162.2 ± 71.3 µm. Both guided scanning procedures performed statistically significantly better than the conventional impression technique (p < 0.05). Mean values for group Cerec Omnicam Ortho were 74.5 ± 39.2 µm and for group Ormco Lythos 91.4 ± 48.8 µm. The in vivo precision of guided scanning procedures exceeds conventional impression techniques with the irreversible hydrocolloid material alginate. Guided scanning procedures may be highly promising for clinical applications, especially for digital orthodontic workflows.

Social Construction of Authorized Users in the Digital Age

ERIC Educational Resources Information Center

Zhu, Xiaohua; Eschenfelder, Kristin R.

2010-01-01

This paper analyzes changes to the definitions of "authorized users" contained in electronic resources licenses and embedded in access control technologies from the mid-1990s to the present. In analyzing changes to the license and technology-based definitions, it tracks shifts in major stakeholders' perceptions of authorized users and…

VideoScheme: A Research, Authoring, and Teaching Tool for Multimedia.

ERIC Educational Resources Information Center

Matthews, James W.; And Others

The availability of digital multimedia technology poses new challenges to researchers, authors, and educators, even as it creates new opportunities for communication. VideoScheme, a prototype video programming environment is described, along with its applications in research, authoring and education. In terms of research, VideoScheme can help…

CR digital mammography: an affordable entry.

PubMed

Fischer, Cathy

2006-01-01

CR full-field digital mammography (FFDM) has been used extensively in other countries, and it was one of the 4 digital mammography technologies employed in the Digital Mammographic Imaging Screening Trial. Affordability and easy integration with pre-existing mammography systems makes CR FFDM an attractive way to secure the advantages of filmless mammography imaging. CR mammography is true digital mammography--it is merely a different way of acquiring the image. The FDA has recently approved the first CR FFDM system for sale in the United States. At Gundersen Lutheran Health System (La Crosse, Wisconsin), CR FFDM is the most practical technology for realizing the potential everyday clinical benefits of filmless mammography imaging.

How To Improve Work In Planetarium?

NASA Astrophysics Data System (ADS)

Pavicic, G.

2009-09-01

Planetariums can provide an immersive environment for scientific education, virtual reality, and entertainment (Shaw 1998). Digital projection into domes, called "full dome projection", can be a technically challenging and expensive exercise, particularly for installation with a modest budget. Here we present an alternative full dome digital projection system, which consists of a single projector and a spherical mirror that scatter the light onto the dome surface. This approach offers many advantages over the fisheye lens alternatives, and results in a similar quality for just a fraction of costs.

Coaxial digital holography measures particular matter in cloud and ambient atmosphere

NASA Astrophysics Data System (ADS)

Li, Baosheng; Yu, Haonan; Jia, Yizhen; Tao, Xiaojie; Zhang, Yang

2018-02-01

In the artificially affected weather, the detection of cloud droplets particles provides an important reference for the effective impact of artificial weather. Digital holography has the unique advantages of full-field, non-contact, no damage, real-time and quantification. In this paper, coaxial digital holography is used to record the polyethylene standard particles and aluminum scrap, and some important parameters, such as three-dimensional coordinate spatial distribution and particle size, will be obtained by the means of analyzing the digital hologram of the particle. The experimental results verify the feasibility of the coaxial digital holographic device applied to the measurement of the cloud parameters, and complete the construction of the coaxial digital holographic system and the measurement of the particles.

Cyberspace Policy Review: Assuring a Trusted and Resilient Information and Communications Infrastructure

DTIC Science & Technology

2009-05-01

information technology revolution. The architecture of the Nation’s digital infrastructure, based largely upon the Internet, is not secure or resilient...thriving digital infrastructure. In addi­ tion, differing national and regional laws and practices —such as laws concerning the investigation and... technology has transformed the global economy and connected people and markets in ways never imagined. To realize the full benefits of the digital

Digital Semaphore: Technical Feasibility of QR Code Optical Signaling for Fleet Communications

DTIC Science & Technology

2013-06-01

Standards (http://www.iso.org) JIS Japanese Industrial Standard JPEG Joint Photographic Experts Group (digital image format; http://www.jpeg.org) LED...Denso Wave corporation in the 1990s for the Japanese automotive manufacturing industry. See Appendix A for full details. Reed-Solomon Error...eliminates camera blur induced by the shutter, providing clear images at extremely high frame rates. Thusly, digital cinema cameras are more suitable

Comparison of traditional nondestructive analysis of RERTR fuel plates with digital radiographic techniques

DOE Office of Scientific and Technical Information (OSTI.GOV)

Davidsmeier, T.; Koehl, R.; Lanham, R.

2008-07-15

The current design and fabrication process for RERTR fuel plates utilizes film radiography during the nondestructive testing and characterization. Digital radiographic methods offer a potential increases in efficiency and accuracy. The traditional and digital radiographic methods are described and demonstrated on a fuel plate constructed with and average of 51% by volume fuel using the dispersion method. Fuel loading data from each method is analyzed and compared to a third baseline method to assess accuracy. The new digital method is shown to be more accurate, save hours of work, and provide additional information not easily available in the traditional method.more » Additional possible improvements suggested by the new digital method are also raised. (author)« less

[Possibilities of use of digital imaging in forensic medicine].

PubMed

Gaval'a, P; Ivicsics, I; Mlynár, J; Novomeský, F

2005-07-01

Based on the daily practice with digital photography and documentation, the authors point out the achievements of the computer technologies implementation to the practice of forensic medicine. The modern methods of imaging, especially the digital photography, offer a wide spectrum of use in forensic medicine--the digital documentation and archivation of autopsy findings, the possibility of immediate consultation of findings with another experts via Internet, and many others. Another possibility is a creation of digital photographic atlas of forensic medicine as a useful aid in pre- and postgradual study. Thus the application of the state-of-the-art computer technologies to the forensic medicine discloses the unknown before possibilities for further development of such a discipline of human medical sciences.

Meteor Film Recording with Digital Film Cameras with large CMOS Sensors

NASA Astrophysics Data System (ADS)

Slansky, P. C.

2016-12-01

In this article the author combines his professional know-how about cameras for film and television production with his amateur astronomy activities. Professional digital film cameras with high sensitivity are still quite rare in astronomy. One reason for this may be their costs of up to 20 000 and more (camera body only). In the interim, however,consumer photo cameras with film mode and very high sensitivity have come to the market for about 2 000 EUR. In addition, ultra-high sensitive professional film cameras, that are very interesting for meteor observation, have been introduced to the market. The particular benefits of digital film cameras with large CMOS sensors, including photo cameras with film recording function, for meteor recording are presented by three examples: a 2014 Camelopardalid, shot with a Canon EOS C 300, an exploding 2014 Aurigid, shot with a Sony alpha7S, and the 2016 Perseids, shot with a Canon ME20F-SH. All three cameras use large CMOS sensors; "large" meaning Super-35 mm, the classic 35 mm film format (24x13.5 mm, similar to APS-C size), or full format (36x24 mm), the classic 135 photo camera format. Comparisons are made to the widely used cameras with small CCD sensors, such as Mintron or Watec; "small" meaning 12" (6.4x4.8 mm) or less. Additionally, special photographic image processing of meteor film recordings is discussed.

Study of the precision guided communication of digital television

NASA Astrophysics Data System (ADS)

Liu, Lun

2012-04-01

Along with the progress and development of the digital technology, there produced the transmission of the new media by medium of such as the network, mobile phones and the digital television, while among them digital TV has the superiority of other media. The appearance and development of digital TV will induce a profound change in the broadcasting and television industry chain. This paper started with discussing the transformation of digital television in profit model, mode of operation and mode of transmission to construct the precision-guided communication theory; And then analyzes the properties and marketing nature of the precision-guided communication to make the construction of the precision-guided communication marketing mode; And put forward the implementing of the precision-guided communication marketing strategies and concrete steps; At the end of the article the author summarized four conclusions.

77 FR 20632 - Information Collection Being Submitted to the Office of Management and Budget for Review and...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-05

... Digital Devices. (a) The Declaration of Conformity equipment authorization procedure, 47 CFR 2.1071... simplified filing and reporting procedure for authorizing equipment for marketing. (d) Finally, testing and...

[Comparison of digital and visual methods for Ki-67 assessment in invasive breast carcinomas].

PubMed

Kushnarev, V A; Artemyeva, E S; Kudaybergenova, A G

2018-01-01

to compare two methods for quantitative assessment of the proliferative activity index (PAI): a visual estimation method by several investigators and digital image analysis (DIA). The use of the Ki-67 index in the daily clinical practice of a Morbid Anatomy Department is associated with the problem of reproducibility of quantitative assessment of the Ki-67 PAI. Due to the development of digital imaging techniques in morphology, new methods for PAI evaluation using the DIA are proposed. The Ki-67 PAI data obtained during visual assessment and digital image analysis were compared in 104 cases of grades 2-3 breast carcinoma. The histological sections were scanned using a Panoramic III scanner (3D Histech, Hungary) and digital images were obtained. DIA was carried out using the software 3D Histech QuantCenter (3D Histech, Hungary), by marking 3-10 zones. Evaluation of the obtained sections was done independently by two investigators engaged in cancer pathology. The level of agreement between visual and digital methods did not differ significantly (p>0.001). The authors selected a gray area in the range of 10-35% IPA, where the Ki-67 index showed a weak relationship between the analyzed groups (ICC, 0.47). The Ki67 index below 10% and above 35% showed a sufficient reproducibility in the same laboratory. The authors consider that the scanned digital form of a histological section, which can be evaluated using automated software analysis modules, is an independent and objective method to assess proliferative activity for Ki-67 index validation.

Can the Use of Web-Based Comic Strip Creation Tool Facilitate EFL Learners' Grammar and Sentence Writing?

ERIC Educational Resources Information Center

Kilickaya, Ferit; Krajka, Jaroslaw

2012-01-01

Both teacher- and learner-made computer visuals are quite extensively reported in Computer-Assisted Language Learning literature, for instance, filming interviews, soap operas or mini-documentaries, creating storyboard projects, authoring podcasts and vodcasts, designing digital stories. Such student-made digital assets are used to present to…

Involvement of Working Memory in Mental Multiplication in Chinese Elementary Students

ERIC Educational Resources Information Center

Liu, Ru-De; Ding, Yi; Xu, Le; Wang, Jia

2017-01-01

The authors' aim was to examine the relation between two-digit mental multiplication and working memory. In Study 1, involving 30 fifth-grade students, we used digit span backward as an abbreviated measure of working memory. In Study 2, involving 41 fourth-grade students, working memory comprised measures of phonological loop, visuospatial…

Q & A with Ed Tech Leaders: Interview with Joshua Kim

ERIC Educational Resources Information Center

Shaughnessy, Michael F.; Fulgham, Susan M.

2016-01-01

The authors present this interview with Joshua Kim, Director of Digital Learning Initiatives at the Dartmouth Center for the Advancement of Learning (DCAL). Dr. Kim leads Dartmouth College's efforts around online learning and digital innovation for teaching and learning. He is a well-known conference speaker and consultant in the area of…

Streaming Audio and Video: New Challenges and Opportunities for Museums.

ERIC Educational Resources Information Center

Spadaccini, Jim

Streaming audio and video present new challenges and opportunities for museums. Streaming media is easier to author and deliver to Internet audiences than ever before; digital video editing is commonplace now that the tools--computers, digital video cameras, and hard drives--are so affordable; the cost of serving video files across the Internet…

Geotagging Digital Collections: BeaverTracks Mobile Project

ERIC Educational Resources Information Center

Griggs, Kim

2011-01-01

BeaverTracks Historical Locations and Walking Tour is a mobile project at Oregon State University (OSU), where the author serves as programmer/analyst. It connects the past to the present by linking historic images to current campus locations. The goal of BeaverTracks is to showcase and bring attention to OSU Libraries' digital collections as well…

The Digital University and the Shifting Time-Space of the Campus

ERIC Educational Resources Information Center

Sheail, Philippa

2018-01-01

This paper explores the concept of translocality, of being 'simultaneously situated' in more than one place, in the context of 'distance' education in the digital university. The author works with the concept of critical time to propose an additional term, "transtemporality", to also recognise the multiple times and temporalities engaged…

Crafting an Agentive Self: Case Studies of Digital Storytelling

ERIC Educational Resources Information Center

Hull, Glynda A.; Katz, Mira-Lisa

2006-01-01

Drawing on data from a multi-year digital storytelling project, this comparative case study offers portraits of two emerging authors--one a child and the other a young adult--who used multiple media and modes to articulate pivotal moments in their lives and reflect on life trajectories. The conceptual framework blends recent scholarship on…

Empowering Knowledge-Building Pedagogy in Online Environments: Creating Digital Moments to Transform Practice

ERIC Educational Resources Information Center

Barber, Wendy; Taylor, Stacey; Buchanan, Sylvia

2014-01-01

The purpose of this paper is to examine a specific online pedagogical tool, "Digital Moments" that can be an effective strategy for building online communities in a knowledge building environment. While the paper will examine the specific techniques and teaching methodologies that enabled the authors to create authentic online learning…

12 CFR 7.5005 - National bank acting as digital certification authority.

Code of Federal Regulations, 2012 CFR

2012-01-01

... persons associated with a particular public/private key pair. As part of this service, the bank may also maintain a listing or repository of public keys. (b) A national bank may issue digital certificates verifying attributes in addition to identity of persons associated with a particular public/private key pair...

12 CFR 7.5005 - National bank acting as digital certification authority.

Code of Federal Regulations, 2014 CFR

2014-01-01

... persons associated with a particular public/private key pair. As part of this service, the bank may also maintain a listing or repository of public keys. (b) A national bank may issue digital certificates verifying attributes in addition to identity of persons associated with a particular public/private key pair...

21 CFR 1311.25 - Requirements for obtaining a CSOS digital certificate.

Code of Federal Regulations, 2013 CFR

2013-04-01

... public keys, the corresponding private key must be used to sign the certificate request. Verification of the signature using the public key in the request will serve as proof of possession of the private key. ... certification of the public digital signature key. After the request is approved, the Certification Authority...

21 CFR 1311.25 - Requirements for obtaining a CSOS digital certificate.

Code of Federal Regulations, 2012 CFR

2012-04-01

... public keys, the corresponding private key must be used to sign the certificate request. Verification of the signature using the public key in the request will serve as proof of possession of the private key. ... certification of the public digital signature key. After the request is approved, the Certification Authority...

12 CFR 7.5005 - National bank acting as digital certification authority.

Code of Federal Regulations, 2013 CFR

2013-01-01

... persons associated with a particular public/private key pair. As part of this service, the bank may also maintain a listing or repository of public keys. (b) A national bank may issue digital certificates verifying attributes in addition to identity of persons associated with a particular public/private key pair...

21 CFR 1311.25 - Requirements for obtaining a CSOS digital certificate.

Code of Federal Regulations, 2014 CFR

2014-04-01

... public keys, the corresponding private key must be used to sign the certificate request. Verification of the signature using the public key in the request will serve as proof of possession of the private key. ... certification of the public digital signature key. After the request is approved, the Certification Authority...

12 CFR 7.5005 - National bank acting as digital certification authority.

Code of Federal Regulations, 2011 CFR

2011-01-01

... persons associated with a particular public/private key pair. As part of this service, the bank may also maintain a listing or repository of public keys. (b) A national bank may issue digital certificates verifying attributes in addition to identity of persons associated with a particular public/private key pair...

Digital Media Literacy in a Sports, Popular Culture and Literature Course

ERIC Educational Resources Information Center

Fortuna, Carolyn

2015-01-01

This article considers how media sports culture is an apt space for digital media literacy instruction. Describing a senior year high school English course that requires students to deconstruct and compose with sports media texts, the author outlines how learning modules, analysis of curated collections of texts through heuristics, and mentor…

75 FR 5614 - Privacy Act of 1974; Department of Homeland Security/ALL-025 Law Enforcement Authority in Support...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-02-03

...'s or entity's name; Digital photograph; Date of birth, place of birth, and age; Social security number; Duty/work address and telephone number; Alias; Race and ethnicity; Citizenship; Fingerprints; Sex... servers, magnetic disc, tape, digital media, and CD-ROM. RETRIEVABILITY: Records may be retrieved by...

Digital Stories: Bringing Multimodal Texts to the Spanish Writing Classroom

ERIC Educational Resources Information Center

Oskoz, Ana; Elola, Idoia

2016-01-01

Despite the availability and growing use of digital story software for authoring and instructional purposes, little is known about learners' perceptions on its integration in the foreign language writing class. Following both a social semiotics approach and activity theory, this study focuses on six advanced Spanish learners' perceptions about the…

Our Digital Conversion

ERIC Educational Resources Information Center

Edwards, Mark

2012-01-01

In this article, the author describes their digital conversion initiative at Mooresville Graded School District. The project has placed a MacBook Air laptop in the hands of every 3rd through 12th grader and their teachers in the district over the past four years, with over 5,000 computers distributed. But they believe their academic successes have…

ASK-LDT 2.0: A Web-Based Graphical Tool for Authoring Learning Designs

ERIC Educational Resources Information Center

Zervas, Panagiotis; Fragkos, Konstantinos; Sampson, Demetrios G.

2013-01-01

During the last decade, Open Educational Resources (OERs) have gained increased attention for their potential to support open access, sharing and reuse of digital educational resources. Therefore, a large amount of digital educational resources have become available worldwide through web-based open access repositories which are referred to as…

Serial Position Effects in the Identification of Letters, Digits, and Symbols

ERIC Educational Resources Information Center

Tydgat, Ilse; Grainger, Jonathan

2009-01-01

In 6 experiments, the authors investigated the form of serial position functions for identification of letters, digits, and symbols presented in strings. The results replicated findings obtained with the target search paradigm, showing an interaction between the effects of serial position and type of stimulus, with symbols generating a distinct…

SCCR Digital Learning System for Scientific Conceptual Change and Scientific Reasoning

ERIC Educational Resources Information Center

She, H. C.; Lee, C. Q.

2008-01-01

This study reports an adaptive digital learning project, scientific concept construction and reconstruction (SCCR), that was developed based on the theories of Dual Situated Learning Model (DSLM) and scientific reasoning. In addition, the authors investigated the effects of an SCCR related to a "combustion" topic for sixth grade students…

Who Woke the Sleeping Giant?: Libraries, Copyrights, and the Digital Age

ERIC Educational Resources Information Center

Hoon, Peggy E.

2003-01-01

In this article, the author provides a spirited defense of librarians' sometimes controversial role in public and legislative controversies over a wide array of topics including fair use, Internet filters, and digital rights to intellectual property. She argues that librarians cannot solve the copyright conundrum for their universities by…

Lessons in Copyright Activism: K-12 Education and the DMCA 1201 Exemption Rulemaking Process

ERIC Educational Resources Information Center

Hobbs, Renee

2016-01-01

Digital learning is being transformed by changes in copyright law. This article discusses the author's personal journey as a copyright education activist through two rounds of rulemaking proceedings before the Copyright Office concerning the anti-circumvention provisions of one part of the copyright law, the Digital Millennium Copyright Act…

47 CFR 2.302 - Call signs.

Code of Federal Regulations, 2012 CFR

2012-10-01

... location when required) KAA200 through KZZ999.WAA200 through WZZ999. Ship telegraph 4 letters 1 KAAA through KZZZ.WAAA through WZZZ. Ship telephone 2 letters, 4 digits, or 3 letters, 4 digits 1 WA2000... stations operating in two or more classes are authorized to the same licensee for the same location, the...

47 CFR 2.302 - Call signs.

Code of Federal Regulations, 2013 CFR

2013-10-01

... location when required) KAA200 through KZZ999.WAA200 through WZZ999. Ship telegraph 4 letters 1 KAAA through KZZZ.WAAA through WZZZ. Ship telephone 2 letters, 4 digits, or 3 letters, 4 digits 1 WA2000... stations operating in two or more classes are authorized to the same licensee for the same location, the...

47 CFR 2.302 - Call signs.

Code of Federal Regulations, 2014 CFR

2014-10-01

... location when required) KAA200 through KZZ999.WAA200 through WZZ999. Ship telegraph 4 letters 1 KAAA through KZZZ.WAAA through WZZZ. Ship telephone 2 letters, 4 digits, or 3 letters, 4 digits 1 WA2000... stations operating in two or more classes are authorized to the same licensee for the same location, the...

47 CFR 2.302 - Call signs.

Code of Federal Regulations, 2011 CFR

2011-10-01

... location when required) KAA200 through KZZ999. WAA200 through WZZ999. Ship telegraph 4 letters 1 KAAA through KZZZ. WAAA through WZZZ. Ship telephone 2 letters, 4 digits, or 3 letters, 4 digits 1 WA2000... stations operating in two or more classes are authorized to the same licensee for the same location, the...

Multi, Digital, or Technology? Seeking Clarity of Teaching through a Clarity of Terms

ERIC Educational Resources Information Center

Jacobs, Gloria E.

2013-01-01

The terms multiliteracies, multimodal literacy, digital literacies, and technology integration are often confused with one another. In this column, the author argues that understanding the differences between the concepts can help build clarity when designing instruction. Position statements by the National Council of Teachers of English and the…

Shaking up Expectations: The OCLS Shake It! App

ERIC Educational Resources Information Center

Shivers, Cassandra

2012-01-01

The author, a digital access architect in the information systems department of the Orange County Library System in Florida, was given the challenge of creating a library mobile app around the 2009 holiday season. At that time, Sheri Chambers, digital content manager in the information systems department, and Debbie Moss, assistant director of the…

Leading Personalized and Digital Learning: A Framework for Implementing School Change

ERIC Educational Resources Information Center

Wolf, Mary Ann; Bobst, Elizabeth; Mangum, Nancy

2017-01-01

"Leading Personalized and Digital Learning" provides needed guidance for principals, aspiring principals, and other school leaders at a critical time when educators are looking to put the power of technology to work for student-centered learning. The authors identify eight leadership essentials that school leaders must attend to if they…

Reading in a Digital Age

ERIC Educational Resources Information Center

Baron, Naomi S.

2017-01-01

The many advantages of reading digitally also bring with them implications for how we learn differently when we read differently. The author suggests that new contemporary technologies are changing the very notion of what it means to read. Even millennials acknowledge that their attention is more focused when they read print rather than online.…

Response to "Expanding Access to Learning with Mobile Digital Devices"

ERIC Educational Resources Information Center

Vanek, Jen

2017-01-01

In his article "Expanding Access to Learning with Mobile Digital Devices" (EJ1150752), Jeff Carter recommended a balanced perspective when measuring the potential of mobile learning to redefine teaching and learning for adults with basic skills needs. In response to Carter's article, the author makes some recommendations that she thinks…

Representation Radio: Digital Art-Making as Transformative Pedagogical Practice in the College Classroom

ERIC Educational Resources Information Center

Bass, Michelle B.; Halverson, Erica R.

2012-01-01

In this article, the authors unpack a first-year college seminar where students explored digital representations of self-afforded pedagogies of possibility for traditionally marginalized student populations, specifically students of colour and first-generation college goers. An artefact analysis model is used to trace the relationship between the…

Golden Oldies: Using Digital Recording to Capture History

ERIC Educational Resources Information Center

Langhorst, Eric

2008-01-01

Analog audio recording has been around for a long time, but today's digital technology makes the process even easier, thanks to inexpensive equipment and free editing software. This year, the author's students at South Valley Junior High in Liberty, Missouri, will embark on an oral history project in which they will record their own family…

Content Area Vocabulary Videos in Multiple Contexts: A Pedagogical Tool

ERIC Educational Resources Information Center

Webb, C. Lorraine; Kapavik, Robin Robinson

2015-01-01

The authors challenged pre-service teachers to digitally define a social studies or mathematical vocabulary term in multiple contexts using a digital video camera. The researchers sought to answer the following questions: 1. How will creating a video for instruction affect pre-service teachers' attitudes about teaching with technology, if at all?…

No short-term effects of digital mobile radio telephone on the awake human electroencephalogram

DOE Office of Scientific and Technical Information (OSTI.GOV)

Roeschke, J.; Mann, K.

1997-05-01

A recent study reported the results of an exploratory study of alterations of the quantitative sleep profile due to the effects of a digital mobile radio telephone. Rapid eye movement (REM) was suppressed, and the spectral power density in the 8--13 Hz frequency range during REM sleep was altered. The aim of the present study was to illuminate the influence of digital mobile radio telephone on the awake electroencephalogram (EEG) of healthy subjects. For this purpose, the authors investigated 34 male subjects in a single-blind cross-over design experiment by measuring spontaneous EEGs under closed-eyes condition from scalp positions C{sub 3}more » and C{sub 4} and comparing the effects of an active and an inactive digital mobile radio telephone (GSM) system. During exposure of nearly 3.5 min to the 900 MHz electromagnetic field pulsed at a frequency of 217 Hz and with a pulse width of 580 {micro}s, the authors could not detect any difference in the awake EEGs in terms of spectral power density measures.« less

Integrating digital information for coastal and marine sciences

USGS Publications Warehouse

Marincioni, Fausto; Lightsom, Frances L.; Riall, Rebecca L.; Linck, Guthrie A.; Aldrich, Thomas C.; Caruso, Michael J.

2004-01-01

A pilot distributed geolibrary, the Marine Realms Information Bank (MRIB), was developed by the U.S. Geological Survey Coastal and Marine Geology Program and the Woods Hole Oceanographic Institution, to classify, integrate, and facilitate access to scientific information about oceans, coasts, and lakes. The MRIB is composed of a categorization scheme, a metadata database, and a specialized software backend, capable of drawing together information from remote sources without modifying their original format or content. Twelve facets are used to classify information: location, geologic time, feature type, biota, discipline, research method, hot topics, project, agency, author, content type, and file type. The MRIB approach allows easy and flexible organization of large or growing document collections for which centralized repositories would be impractical. Geographic searching based on the gazetteer and map interface is the centerpiece of the MRIB distributed geolibrary. The MRIB is one of a very few digital libraries that employ georeferencing -- a fundamentally different way to structure information from the traditional author/title/subject/keyword approach employed by most digital libraries. Lessons learned in developing the MRIB will be useful as other digital libraries confront the challenges of georeferencing.

Preparing images for publication: part 2.

PubMed

Bengel, Wolfgang; Devigus, Alessandro

2006-08-01

The transition from conventional to digital photography presents many advantages for authors and photographers in the field of dentistry, but also many complexities and potential problems. No uniform procedures for authors and publishers exist at present for producing high-quality dental photographs. This two-part article aims to provide guidelines for preparing images for publication and improving communication between these two parties. Part 1 provided information about basic color principles, factors that can affect color perception, and digital color management. Part 2 describes the camera setup, discusses how to take a photograph suitable for publication, and outlines steps for the image editing process.

Guidance, Navigation and Control Digital Emulation Technology Laboratory. Volume 1. Part 3. Task 1: Digital Emulation Technology Laboratory

DTIC Science & Technology

1991-09-27

ISTT IEXIT IGO MAGV TGII ROLLERI YAWER LA !10 TRMTGO TGE 1 TGE2ALI IBURNI ACQD UVs MVS CMMD VCMD IFTAB TFTAB ACSLEV DTOFFV IVTAB TB URNM TI MONVI TVTAB...Volume 1, Part 3 C b inertdfatal loup ndxjust compu ed . Missile states must not CI C transition has occurred since the last C C integration step . The...SUBROUTINE RESP2R ( DT,WD,ZD,CILL,CIL,CI., COLL ,COL,CO) C C SUBROUTINE NAME : RESP2R C C AUTHOR(S) :D. F. SMITH C C FUNCTION Given a second

Flight test validation of a design procedure for digital autopilots

NASA Technical Reports Server (NTRS)

Bryant, W. H.

1983-01-01

Commercially available general aviation autopilots are currently in transition from an analogue circuit system to a computer implemented digital flight control system. Well known advantages of the digital autopilot include enhanced modes, self-test capacity, fault detection, and greater computational capacity. A digital autopilot's computational capacity can be used to full advantage by increasing the sophistication of the digital autopilot's chief function, stability and control. NASA's Langley Research Center has been pursuing the development of direct digital design tools for aircraft stabilization systems for several years. This effort has most recently been directed towards the development and realization of multi-mode digital autopilots for GA aircraft, conducted under a SPIFR-related program called the General Aviation Terminal Operations Research (GATOR) Program. This presentation focuses on the implementation and testing of a candidate multi-mode autopilot designed using these newly developed tools.

[Comparison of the image quality of conventional and digital radiography in lizards. Mammography technique versus digital detector system].

PubMed

Bochmann, Monika; Ludewig, E; Pees, M

2011-01-01

A conventional high-resolution screen-film system (Film Kodak MIN-R S, Kodak MIN-R 2000) was compared with an indirect digital detector system (Varian PaxScan 4030E) for use in radiography of lizards. A total of 20 bearded dragons (Pogona vitticeps ) with body masses between 123 g and 487 g were investigated by using conventional and digital image acquisition techniques. The digital image was taken with the same dose as well as half the dose of the conventional radiograph. The study was conducted semi-blinded as the x-ray images were encoded and randomised. Five veterinarians with clinical experience in reptile medicine served as observers. Exactly defined structures in three anatomical regions were assessed using a three-step scale. Furthermore, the overall quality of the respective region was evaluated using a five-step scale. Evaluation of the data was done by visual grading analysis. None of the structures examined was assessed to be of significantly inferior quality on the digital images in comparison to the conventional radiographs. The majority of the results demonstrated an equal quality of both systems. For assessment of the lung tissue and the pulmonary vessels as well as the overall assessment of the lung, the digital radiographs with full dose were rated to be significantly superior in comparison to the film-screen system. Furthermore, the joint contours of the shoulder and cubital joints and the overall assessments of the humerus and the caudal coelomic cavity were rated significantly better on digital images with full dose compared to those with reduced dose. The digital flat panel detector technique examined in this study is equal or superior to the conventional high-resolution screen-film system used. Nevertheless, the practicability of a dose reduction is limited in bearded dragons. Digital imaging systems are progressively being used in veterinary practice. The results of the study demonstrate the useful application of the digital detector systems in lizards.

Full-field wrist pulse signal acquisition and analysis by 3D Digital Image Correlation

NASA Astrophysics Data System (ADS)

Xue, Yuan; Su, Yong; Zhang, Chi; Xu, Xiaohai; Gao, Zeren; Wu, Shangquan; Zhang, Qingchuan; Wu, Xiaoping

2017-11-01

Pulse diagnosis is an essential part in four basic diagnostic methods (inspection, listening, inquiring and palpation) in traditional Chinese medicine, which depends on longtime training and rich experience, so computerized pulse acquisition has been proposed and studied to ensure the objectivity. To imitate the process that doctors using three fingertips with different pressures to feel fluctuations in certain areas containing three acupoints, we established a five dimensional pulse signal acquisition system adopting a non-contacting optical metrology method, 3D digital image correlation, to record the full-field displacements of skin fluctuations under different pressures. The system realizes real-time full-field vibration mode observation with 10 FPS. The maximum sample frequency is 472 Hz for detailed post-processing. After acquisition, the signals are analyzed according to the amplitude, pressure, and pulse wave velocity. The proposed system provides a novel optical approach for digitalizing pulse diagnosis and massive pulse signal data acquisition for various types of patients.

[Application of digital earth technology in research of traditional Chinese medicine resources].

PubMed

Liu, Jinxin; Liu, Xinxin; Gao, Lu; Wei, Yingqin; Meng, Fanyun; Wang, Yongyan

2011-02-01

This paper describes the digital earth technology and its core technology-"3S" integration technology. The advance and promotion of the "3S" technology provide more favorable means and technical support for Chinese medicine resources survey, evaluation and appropriate zoning. Grid is a mature and popular technology that can connect all kinds of information resources. The author sums up the application of digital earth technology in the research of traditional Chinese medicine resources in recent years, and proposes the new method and technical route of investigation in traditional Chinese medicine resources, traditional Chinese medicine zoning and suitability assessment by combining the digital earth technology and grid.

[The procedure for documentation of digital images in forensic medical histology].

PubMed

Putintsev, V A; Bogomolov, D V; Fedulova, M V; Gribunov, Iu P; Kul'bitskiĭ, B N

2012-01-01

This paper is devoted to the novel computer technologies employed in the studies of histological preparations. These technologies allow to visualize digital images, structurize the data obtained and store the results in computer memory. The authors emphasize the necessity to properly document digital images obtained during forensic-histological studies and propose the procedure for the formulation of electronic documents in conformity with the relevant technical and legal requirements. It is concluded that the use of digital images as a new study object permits to obviate the drawbacks inherent in the work with the traditional preparations and pass from descriptive microscopy to their quantitative analysis.

Health promotion in the digital era: a critical commentary.

PubMed

Lupton, Deborah

2015-03-01

A range of digitized health promotion practices have emerged in the digital era. Some of these practices are voluntarily undertaken by people who are interested in improving their health and fitness, but many others are employed in the interests of organizations and agencies. This article provides a critical commentary on digitized health promotion. I begin with an overview of the types of digital technologies that are used for health promotion, and follow this with a discussion of the socio-political implications of such use. It is contended that many digitized health promotion strategies focus on individual responsibility for health and fail to recognize the social, cultural and political dimensions of digital technology use. The increasing blurring between voluntary health promotion practices, professional health promotion, government and corporate strategies requires acknowledgement, as does the increasing power wielded by digital media corporations over digital technologies and the data they generate. These issues provoke questions for health promotion as a practice and field of research that hitherto have been little addressed. © The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Digitizing and Securing Archived Laboratory Notebooks

ERIC Educational Resources Information Center

Caporizzo, Marilyn

2008-01-01

The Information Group at Millipore has been successfully using a digital rights management tool to secure the email distribution of archived laboratory notebooks. Millipore is a life science leader providing cutting-edge technologies, tools, and services for bioscience research and biopharmaceutical manufacturing. Consisting of four full-time…

Operation and tests of a DDC101 A/D

NASA Astrophysics Data System (ADS)

Nguyen, H.

1994-11-01

For the KTeV PMT laser monitoring system, one needs a high resolution device with a large dynamic range to be used for digitizing PIN photodiodes. The dynamic range should be wider than or comparable to the KTeV digitizer (17-bits). The Burr-Brown DDC101 is a precision, wide dynamic range, charge digitizing A/D converter with 20-bit resolution, packaged in a 28-pin plastic, double-wide DP. Low level current output devices such as photosensors can be directly connected to its input. The digital output can be clocked-out serially from the pins. For typical operations, a relatively wide gate of 1 msec should be used. The full scale charge is 500 pC for unipolar mode. The bipolar mode scale is +/- 250 pC. The advertised integral nonlinearity is 0.003% of FSR. This document describes only the basic DDC101 operations since full detail can be found in the DDC101 manual. Tests results are given in section 3.

Rethinking Composing in a Digital Age: Authoring Literate Identities through Multimodal Storytelling

ERIC Educational Resources Information Center

Vasudevan, Lalitha; Schultz, Katherine; Bateman, Jennifer

2010-01-01

In this article, the authors engage the theoretical lens of multimodality in rethinking the practices and processes of composing in classrooms. Specifically, they focus on how learning new composing practices led some fifth-grade students to author new literate identities--what they call authorial stances--in their classroom community. Their…

Making Known Differently: Engaging Visual Modalities as Spaces to Author New Selves

ERIC Educational Resources Information Center

Vasudevan, Lalitha

2006-01-01

In the increasingly digital and multimodal landscape of adolescents' literacies, it is particularly interesting to explore how young people are making and remaking their identities in online and offline spaces. These self-authoring practices are especially significant when the authors are African American adolescent boys, whose lives are often…

The Voice of Authority

ERIC Educational Resources Information Center

Wetterlund, Kris

2012-01-01

In the last part of 2011, conversations swirled around the Internet and print about the assault on museum authority. The Marcus Institute for Digital Education in the Arts (MIDEA) summarized some of the discussion in their blog entry "The Participatory Museum and a New Authority." Other sites joined in the discussion, for example, the Museum Geek…

A Call to Digital Health Practitioners: New Guidelines Can Help Improve the Quality of Digital Health Evidence.

PubMed

Agarwal, Smisha; Lefevre, Amnesty E; Labrique, Alain B

2017-10-06

Despite the rapid proliferation of health interventions that employ digital tools, the evidence on the effectiveness of such approaches remains insufficient and of variable quality. To address gaps in the comprehensiveness and quality of reporting on the effectiveness of digital programs, the mHealth Technical Evidence Review Group (mTERG), convened by the World Health Organization, proposed the mHealth Evidence Reporting and Assessment (mERA) checklist to address existing gaps in the comprehensiveness and quality of reporting on the effectiveness of digital health programs. We present an overview of the mERA checklist and encourage researchers working in the digital health space to use the mERA checklist for reporting their research. The development of the mERA checklist consisted of convening an expert group to recommend an appropriate approach, convening a global expert review panel for checklist development, and pilot-testing the checklist. The mERA checklist consists of 16 core mHealth items that define what the mHealth intervention is (content), where it is being implemented (context), and how it was implemented (technical features). Additionally, a 29-item methodology checklist guides authors on reporting critical aspects of the research methodology employed in the study. We recommend that the core mERA checklist is used in conjunction with an appropriate study-design specific checklist. The mERA checklist aims to assist authors in reporting on digital health research, guide reviewers and policymakers in synthesizing evidence, and guide journal editors in assessing the completeness in reporting on digital health studies. An increase in transparent and rigorous reporting can help identify gaps in the conduct of research and understand the effects of digital health interventions as a field of inquiry. ©Smisha Agarwal, Amnesty E Lefevre, Alain B Labrique. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 06.10.2017.

Where on earth to publish? A sample survey comparing traditional and open access publishing in the oncological field.

PubMed

Poltronieri, Elisabetta; Bravo, Elena; Camerini, Tiziana; Ferri, Maurizio; Rizzo, Roberto; Solimini, Renata; Cognetti, Gaetana

2013-01-22

The paper intends to help scientific authors to make the best choice of journals in which to publish, by describing and comparing journal features in the area of oncology. For this purpose, the authors identified impact factor (IF) ranking, cost options and copyright conditions offered to authors wishing to publish in full open access (OA), subscription-based or hybrid journals. Data referring to articles published in 2010 by three Italian research institutions (National Institute of Health - Rome (ISS), Regina Elena National Cancer Institute - Rome (IRE), National Cancer Institute - Milan (INT) in journals (78) managed according to different business models, all listed in the Journal Citation Reports, subject category Oncology, were collected and analysed. The journals surveyed were ranked according to IF, position in quartiles, publication charges, usage rights in published articles, self-archiving conditions in OAI-compliant repositories digital archives. Almost half (34) the journals surveyed were included in the first quartile, thus revealing authors' preference for journals with a high IF. The prevalent journal business model was the hybrid formula (based on subscriptions but also offering a paid OA option) with 51 journals, followed by subscription-based only journals accounting for 22, while just 5 full OA journals were identified. In general, no relationship was found between IF and article publication charges, in terms of correspondence between more expensive fees and higher IF. The issue of OA journals as compared with traditional subscription-based journals is highly debated among stakeholders: library administrators facing financial restrictions, authors seeking to locate the best outlet for their research, publishers wishing to increase their revenues by offering journals with wider appeal. Against this background, factors such as the quest for alternatives to high-cost business models, investments in setting up institutional repositories hosting the published versions of articles and efforts to overcome copyright barriers and gain free access to scientific literature are all crucial.

DASCH to Measure (and preserve) the Harvard Plates: Opening the ˜100-year Time Domain Astronomy Window

NASA Astrophysics Data System (ADS)

Grindlay, J.; Tang, S.; Simcoe, R.; Laycock, S.; Los, E.; Mink, D.; Doane, A.; Champine, G.

2009-08-01

The temporal Universe is now possible to study on previously inaccessible timescales of days to decades, over a full century, with the planned full-digitization of the Harvard plate collection. The Digital Access to a Sky Century @ Harvard (DASCH) project has developed the world's highest-speed precision plate scanner and the required software to digitize the ˜500,000 glass photographic plates (mostly 20 x 25~cm) that record images of the full sky taken by some 20 telescopes in both hemispheres over the period 1880 - 1985. These provide ˜500-1000 measures of any object brighter than the plate limit (typically B ˜14 - 17) with photometric accuracy from the digital image typically Δm ˜0.10 - 0.15 mag, with the presently developed photometry pipeline and spatially-dependent calibration (using the Hubble Guide Star Catalog) for each plate. We provide an overview of DASCH, the processing, and example light curves that illustrate the power of this unique dataset and resource. Production scanning and serving on-line the entire ˜1 PB database (both images and derived light curves) on spinning disk could be completed within ˜3 - 5 y after funding (for scanner operations and database construction) is obtained.

Data repositories for medical education research: issues and recommendations.

PubMed

Schwartz, Alan; Pappas, Cleo; Sandlow, Leslie J

2010-05-01

The authors explore issues surrounding digital repositories with the twofold intention of clarifying their creation, structure, content, and use, and considering the implementation of a global digital repository for medical education research data sets-an online site where medical education researchers would be encouraged to deposit their data in order to facilitate the reuse and reanalysis of the data by other researchers. By motivating data sharing and reuse, investigators, medical schools, and other stakeholders might see substantial benefits to their own endeavors and to the progress of the field of medical education.The authors review digital repositories in medicine, social sciences, and education, describe the contents and scope of repositories, and present extant examples. The authors describe the potential benefits of a medical education data repository and report results of a survey of the Society for Directors of Research in Medicine Education, in which participants responded to questions about data sharing and a potential data repository. Respondents strongly endorsed data sharing, with the caveat that principal investigators should choose whether or not to share data they collect. A large majority believed that a repository would benefit their unit and the field of medical education. Few reported using existing repositories. Finally, the authors consider challenges to the establishment of such a repository, including taxonomic organization, intellectual property concerns, human subjects protection, technological infrastructure, and evaluation standards. The authors conclude with recommendations for how a medical education data repository could be successfully developed.

Self-Efficacy as a Long-Term Outcome of a General Education Course on Digital Technologies

ERIC Educational Resources Information Center

Revelo, Renata A.; Schmitz, Christopher D.; Le, Duyen T.; Loui, Michael C.

2017-01-01

This paper investigates the long-term outcomes of a general education course on digital technologies. Through conducting cross-sectional and longitudinal interviews with students, the authors found that non-engineering students who took this course had notable noncognitive, long-term outcomes. A primary focus of the work reported in this paper was…

Open Source Digital Image Management Took Us from Raging Rivers to Quiet Waters

ERIC Educational Resources Information Center

Dunlap, Isaac Hunter

2005-01-01

In this article, the author describes his experience when Kathy Nichols contacted him seeking suggestions, recommendations--really anything he could think of--that might help her seize control of a bewildering and rapidly surging torrent of digital image files. The challenges that Nichols described interested him, and he felt they might be…

Incidental Learning in 3D Virtual Environments: Relationships to Learning Style, Digital Literacy and Information Display

ERIC Educational Resources Information Center

Thomas, Wayne W.; Boechler, Patricia M.

2014-01-01

With teachers taking more interest in utilizing 3D virtual environments for educational purposes, research is needed to understand how learners perceive and process information within virtual environments (Eschenbrenner, Nah, & Siau, 2008). In this study, the authors sought to determine if learning style or digital literacy predict incidental…

Avoidance of the Real and Anxiety about the Unreal: Attachment Style and Video-Gaming

ERIC Educational Resources Information Center

Coulson, Mark; Oskis, Andrea; Gould, Rebecca L

2017-01-01

In this article, the authors discuss the light and dark side of attachments and attachment style in physical and digital worlds. They argue that many games offer opportunities for the generation of new and meaningful attachments to both physical and digital others. They discuss two "fundamental attachment errors" and show how these can…

A Descriptive Study of First-Year College Students' Non-Academic Digital Literacy Practices with Implications for College Writing Education

ERIC Educational Resources Information Center

Amicucci, Ann N.

2013-01-01

In this qualitative research study, the author investigated first-year college students' non-academic digital literacy practices, the audiences for these practices, and students' preferences for enacting these practices in the first-year college writing classroom. Methods of data collection included surveying 177 students, conducting…

BookMeUp: Creating a Book Suggestion App

ERIC Educational Resources Information Center

Clark, Jason

2012-01-01

The rise of apps and mobile devices has opened the door to small, dedicated software programs that are focused on singular tasks. From the author's perspective as head of digital access and web service manager at Montana State University, these apps offered an opportunity to build a focused digital service aimed at allowing someone to enter a…

On Your Mark, Get Set, Go! Overview of a Digital Project from Start to Finish

ERIC Educational Resources Information Center

Goans, Doug; Hackbart-Dean, Pam; Kata, Lauren

2007-01-01

In 2004, Georgia State University (GSU) Library's Southern Labor Archives, located in Atlanta, began working with the International Association of Machinists and Aerospace Workers (IAM) to plan for the digitization of the union's 105-year-old journal. With generous financial support from IAM, the authors, who are GSU staff members, began…

Appropriation, Parody, Gender Play, and Self-Representation in Preadolescents' Digital Video Production

ERIC Educational Resources Information Center

Ivashkevich, Olga; Shoppell, Samantha

2013-01-01

The authors discuss their participant observation study with the 10-year-old boy and 8-year-old girl who collaborated on making digital videos at home. Major themes that emerged from this research include appropriation of popular culture texts, parody, gender play, and managing self-representations. These themes highlight the benefits of video…

Sounds Good to Me: Using Digital Audio in the Social Studies Classroom

ERIC Educational Resources Information Center

Lipscomb, George B.; Guenther, Lisa Marie; McLeod, Perry

2007-01-01

In social studies, the incorporation of technology presents some unique opportunities. With such innovations as blogging, interactive mapping, digital resources and others entering social studies classrooms, there is great potential for teachers, but it is hard to know where to begin. In this article, the authors focus on one familiar, yet rapidly…

Proceeding of the ACM/IEEE-CS Joint Conference on Digital Libraries (1st, Roanoke, Virginia, June 24-28, 2001).

ERIC Educational Resources Information Center

Association for Computing Machinery, New York, NY.

Papers in this Proceedings of the ACM/IEEE-CS Joint Conference on Digital Libraries (Roanoke, Virginia, June 24-28, 2001) discuss: automatic genre analysis; text categorization; automated name authority control; automatic event generation; linked active content; designing e-books for legal research; metadata harvesting; mapping the…

12 CFR 7.5005 - National bank acting as digital certification authority.

Code of Federal Regulations, 2010 CFR

2010-01-01

... customer as of the current or a previous date, such as account balance as of a particular date, lines of credit as of a particular date, past financial performance of the customer, and verification of customer relationship with the bank as of a particular date. (c) When a national bank issues a digital certificate...

Adolescents Composing Fiction in Digital Game and Written Formats: Tacit, Explicit and Metacognitive Strategies

ERIC Educational Resources Information Center

McClay, Jill Kedersha; Mackey, Margaret; Carbonaro, Mike; Szafron, Duane; Schaeffer, Jonathan

2007-01-01

This article reports on a study of 23 tenth-grade students who created fiction in digital game and written formats. The researchers observed them at work, analysed their stories in both formats, and interviewed selected students to learn what affordances and constraints they demonstrate and/or articulate in such authoring. The students used…

The New Generation of Citation Indexing in the Age of Digital Libraries

ERIC Educational Resources Information Center

Liu, Mengxiong; Cabrera, Peggy

2008-01-01

As the Web is becoming a powerful new medium in scientific publication and scholarly communication, citation indexing has found a new application in the digital environment. The authors reviewed the new developments in Web-based citation indexing and conducted a case study in three major citation search tools, "Web of Science", "Scopus" and…

My eSorts and Digital Extensions of Word Study

ERIC Educational Resources Information Center

Zucker, Tricia A.; Invernizzi, Marcia

2008-01-01

"My eSorts" is a strategy for helping children learn to read and spell in a socially motivated context. It is based on developmental spelling research and the word study approach to teaching phonics and spelling. "eSorting" employs digital desktop publishing tools that allow children to author their own electronic word sorts and then share these…

Examining Computational Skills in Prekindergarteners: The Effects of Traditional and Digital Manipulatives in a Prekindergarten Classroom

ERIC Educational Resources Information Center

Mattoon, Cassandra; Bates, Alan; Shifflet, Rena; Latham, Nancy; Ennis, Sarah

2015-01-01

The authors investigated benefits of digital technology compared with traditional manipulatives in relation to preschoolers' development and learning of computational skills. The sample consisted of twenty four 4-and 5-year old children who attended a half-day prekindergarten program five times a week in a university laboratory school in the…

A Digital Simulation Program for Health Science Students to Follow Drug Levels in the Body

ERIC Educational Resources Information Center

Stavchansky, Salomon; And Others

1977-01-01

The Rayetheon Scientific Simulation Language (RSSL) program, an easily-used simulation on the CDC/6600 computer at the University of Texas at Austin, offers a simple method of solving differential equations on a digital computer. It is used by undergraduate biopharmaceutics-pharmacokinetics students and graduate students in all areas. (Author/LBH)

Crossing the Digital Divide Safely and Trustingly: How Ecologies of Learning Scaffold the Journey

ERIC Educational Resources Information Center

Henning, Elizabeth; Van der Westhuizen, Duan

2004-01-01

The article addresses the issue of "learning to elearn" in borderless programs in a globalised learning landscape and the associated problems of scaffolding the journey across the digital divide. The authors argue that the assumption underlying such courses is that cross-cultural programs are viable because they are conceived and…

User Needs of Digital Service Web Portals: A Case Study

ERIC Educational Resources Information Center

Heo, Misook; Song, Jung-Sook; Seol, Moon-Won

2013-01-01

The authors examined the needs of digital information service web portal users. More specifically, the needs of Korean cultural portal users were examined as a case study. The conceptual framework of a web-based portal is that it is a complex, web-based service application with characteristics of information systems and service agents. In…

"Turning Around" to the Affordances of Digital Games: English Curriculum and Students' Lifeworlds

ERIC Educational Resources Information Center

Beavis, Catherine; Walsh, Christopher; Bradford, Clare; O'Mara, Joanne; Apperley, Thomas; Gutierrez, Amanda

2015-01-01

The need for English and literacy curriculum to connect with young people's lifeworlds to build bridges and frames of reference that connect traditional English curriculum with digital texts and literacies, are increasing priorities in curriculum frameworks in Australia and elsewhere. This paper reports on a project in which the authors worked…

Different Views on Digital Scholarship: Separate Worlds or Cohesive Research Field?

ERIC Educational Resources Information Center

Raffaghelli, Juliana E.; Cucchiara, Stefania; Manganello, Flavio; Persico, Donatella

2016-01-01

This article presents a systematic review of the literature on Digital Scholarship, aimed at better understanding the collocation of this research area at the crossroad of several disciplines and strands of research. The authors analysed 45 articles in order to draw a picture of research in this area. In the first phase, the articles were…

1989 Exclusive Economic Zone Symposium: summary and recommendations

USGS Publications Warehouse

Lockwood, M.; Hill, G.W.

1989-01-01

Issues discussed relate to digital seafloor mapping projects, cooperative federal-state programs, and requirements for additional data and information. Symposium recommendations included the need for increased surveying in coastal waters, development of standards for digital data dissemination, increased coordination with coastal states and federal agencies, and additional geophysical measurement systems abroad all mapping ships. -from Authors

Embrace and Ambivalence

ERIC Educational Resources Information Center

Kuhn, Virginia

2013-01-01

The digital dissertation has been here for almost a decade, but people in the academe still don't seem to know what to do with it. How should it be presented? How should it be archived? In August 2005, the author successfully defended a media-rich digital dissertation in the Department of English at the University of Wisconsin-Milwaukee (UWM). The…

Authored Assemblages in a Digital World: Illustrations of a Child's Online Social, Critical and Semiotic Meaning-Making

ERIC Educational Resources Information Center

Winters, Kari-Lynn; Vratulis, Vetta

2013-01-01

Drawing on case illustrations of a six-year-old child as he "assembles" a digital world using Webkinz[TM], this paper proposes an approach that researchers and educators might use to understand, analyse and critique multimodality. This multidisciplinary theoretical framework integrates new literacies, social semiotics and critical…

Writing and Publishing in a Blended Learning Environment to Develop Students' Scholarly Digital Ethos

ERIC Educational Resources Information Center

Fogleman, Jay; Niedbala, Mona Anne; Bedell, Francesca

2013-01-01

How do educators leverage students' fluency with ubiquitous information and communication sources to foster a scholarly digital ethos? This article describes a blended learning environment designed to engage first-year students in 21st-century emerging forms of scholarship and publication. The authors describe an effort to reverse the millennials'…

Making the Classics Matter to Students through Digital Literacies and Essential Questions

ERIC Educational Resources Information Center

Ostenson, Jonathan; Gleason-Sutton, Elizabeth

2011-01-01

This article discusses how to make the classics matter to students through digital literacies and essential questions. The authors share their experiences with planning and delivering a unit that ultimately gave "The Scarlet Letter" real meaning for their students--and helped them do the same for other classics they taught. Students read "The…

Pharmacy professionalism and the digital age.

PubMed

Rutter, Paul M; Duncan, Gregory

2011-12-01

To explore how the use of digital media could affect how people view professional behaviour. The growth in social networking sites has been phenomenal and they are now an extremely popular medium for interacting with others both commercially and privately. This as-yet-uncontrolled digital media provides ample opportunities for public and professional scrutiny for the unwary. Instances of employer screening and employee dismissal are already documented. All pharmacists who use digital media now need to be conscious that their virtual presence could be subject to regulator investigation. It is important that individuals are aware of the risks associated with using digital media and that pharmacy organisations begin to provide clear leadership to help pharmacists know what is and is not acceptable. © 2011 The Authors. IJPP © 2011 Royal Pharmaceutical Society.

Strength of SiCf-SiCm composite tube under uniaxial and multiaxial loading

NASA Astrophysics Data System (ADS)

Shapovalov, Kirill; Jacobsen, George M.; Alva, Luis; Truesdale, Nathaniel; Deck, Christian P.; Huang, Xinyu

2018-03-01

The authors report mechanical strength of nuclear grade silicon carbide fiber reinforced silicon carbide matrix composite (SiCf-SiCm) tubing under several different stress states. The composite tubing was fabricated via a Chemical Vapor Infiltration (CVI) process, and is being evaluated for accident tolerant nuclear fuel cladding. Several experimental techniques were applied including uniaxial tension, elastomer insert burst test, open and closed end hydraulic bladder burst test, and torsion test. These tests provided critical stress and strain values at proportional limit and at ultimate failure points. Full field strain measurements using digital image correlation (DIC) were obtained in order to acquire quantitative information on localized deformation during application of stress. Based on the test results, a failure map was constructed for the SiCf-SiCm composites.

Digital database architecture and delineation methodology for deriving drainage basins, and a comparison of digitally and non-digitally derived numeric drainage areas

USGS Publications Warehouse

Dupree, Jean A.; Crowfoot, Richard M.

2012-01-01

The drainage basin is a fundamental hydrologic entity used for studies of surface-water resources and during planning of water-related projects. Numeric drainage areas published by the U.S. Geological Survey water science centers in Annual Water Data Reports and on the National Water Information Systems (NWIS) Web site are still primarily derived from hard-copy sources and by manual delineation of polygonal basin areas on paper topographic map sheets. To expedite numeric drainage area determinations, the Colorado Water Science Center developed a digital database structure and a delineation methodology based on the hydrologic unit boundaries in the National Watershed Boundary Dataset. This report describes the digital database architecture and delineation methodology and also presents the results of a comparison of the numeric drainage areas derived using this digital methodology with those derived using traditional, non-digital methods. (Please see report for full Abstract)

Perioral Rejuvenation With Ablative Erbium Resurfacing.

PubMed

Cohen, Joel L

2015-11-01

Since the introduction of the scanning full-field erbium laser, misconceptions regarding ablative erbium resurfacing have resulted in its being largely overshadowed by ablative fractional resurfacing. This case report illustrates the appropriateness of full-field erbium ablation for perioral resurfacing. A patient with profoundly severe perioral photodamage etched-in lines underwent full-field ablative perioral resurfacing with an erbium laser (Contour TRL, Sciton Inc., Palo Alto, CA) that allows separate control of ablation and coagulation. The pre-procedure consultations included evaluation of the severity of etched-in lines, and discussion of patient goals, expectations, and appropriate treatment options, as well as a review of patient photos and post-treatment care required. The author generally avoids full-field erbium ablation in patients with Fitzpatrick type IV and above. For each of 2 treatment sessions (separated by approximately 4 months), the patient received (12 cc plain 2% lidodaine) sulcus blocks before undergoing 4 passes with the erbium laser at 150 μ ablation, no coagulation, and then some very focal 30 μ ablation to areas of residual lines still visualized through the pinpoint bleeding. Similarly, full-field ablative resurfacing can be very reliable for significant wrinkles and creping in the lower eyelid skin--where often a single treatment of 80 μ ablation, 50 μ coagulation can lead to a nice improvement. Standardized digital imaging revealed significant improvement in deeply etched rhytides without significant adverse events. For appropriately selected patients requiring perioral (or periorbital) rejuvenation, full-field ablative erbium resurfacing is safe, efficacious and merits consideration.

Safeguarding Copyrighted Contents: Digital Libraries and Intellectual Property Management. CWRU's Rights Management System.

ERIC Educational Resources Information Center

Alrashid, Tareq M.; Barker, James A.; Christian, Brian S.; Cox, Steven C.; Rabne, Michael W.; Slotta, Elizabeth A.; Upthegrove, Luella R.

1998-01-01

Describes Case Western Reserve University's (CWRU's) digital library project that examines the networked delivery of full-text materials and high-quality images to provide students excellent supplemental instructional resources delivered directly to their dormitory rooms. Reviews intellectual property (IP) management requirements and describes…

Montessori Practices: Options for a Digital Age

ERIC Educational Resources Information Center

Powell, Mark

2016-01-01

Mark Powell's plea for an open-minded view on the full scope of technology that is compatible with Montessori education enriches Maria Montessori's clear modernism of welcoming science into her educational vision. Growing up digital can be intelligently managed so that "technology may offer an effective, adaptable, and easily available means…

Prototype of Multifunctional Full-text Library in the Architecture Web-browser / Web-server / SQL-server

NASA Astrophysics Data System (ADS)

Lyapin, Sergey; Kukovyakin, Alexey

Within the framework of the research program "Textaurus" an operational prototype of multifunctional library T-Libra v.4.1. has been created which makes it possible to carry out flexible parametrizable search within a full-text database. The information system is realized in the architecture Web-browser / Web-server / SQL-server. This allows to achieve an optimal combination of universality and efficiency of text processing, on the one hand, and convenience and minimization of expenses for an end user (due to applying of a standard Web-browser as a client application), on the other one. The following principles underlie the information system: a) multifunctionality, b) intelligence, c) multilingual primary texts and full-text searching, d) development of digital library (DL) by a user ("administrative client"), e) multi-platform working. A "library of concepts", i.e. a block of functional models of semantic (concept-oriented) searching, as well as a subsystem of parametrizable queries to a full-text database, which is closely connected with the "library", serve as a conceptual basis of multifunctionality and "intelligence" of the DL T-Libra v.4.1. An author's paragraph is a unit of full-text searching in the suggested technology. At that, the "logic" of an educational / scientific topic or a problem can be built in a multilevel flexible structure of a query and the "library of concepts", replenishable by the developers and experts. About 10 queries of various level of complexity and conceptuality are realized in the suggested version of the information system: from simple terminological searching (taking into account lexical and grammatical paradigms of Russian) to several kinds of explication of terminological fields and adjustable two-parameter thematic searching (a [set of terms] and a [distance between terms] within the limits of an author's paragraph are such parameters correspondingly).

iText, but iDon't Teach with It: An Essay on i-Literacy in Teacher Education

ERIC Educational Resources Information Center

Schneider, Jenifer Jasinski

2015-01-01

In this article, the author explores her observations of preservice teachers' technological literacy as it is often enacted across iterations of a writing methods course. Using personal examples and classroom anecdotes, the author argues that the construct of "digital native" is flawed and, instead, the author positions preservice…

Increased Screen Time: Implications for Early Childhood Development and Behavior.

PubMed

Radesky, Jenny S; Christakis, Dimitri A

2016-10-01

The authors review trends in adoption of new digital technologies (eg, mobile and interactive media) by families with young children (ages 0-8 years), continued use of television and video games, and the evidence for learning from digital versus hands-on play. The authors also discuss continued concerns about health and developmental/behavioral risks of excessive media use for child cognitive, language, literacy, and social-emotional development. This evidence is then applied to clinical care in terms of the screening questions providers can use, tools available to providers and parents, and changes in anticipatory guidance. Copyright © 2016 Elsevier Inc. All rights reserved.

Precision and Accuracy of a Digital Impression Scanner in Full-Arch Implant Rehabilitation.

PubMed

Pesce, Paolo; Pera, Francesco; Setti, Paolo; Menini, Maria

To evaluate the accuracy and precision of a digital scanner used to scan four implants positioned according to an immediate loading implant protocol and to assess the accuracy of an aluminum framework fabricated from a digital impression. Five master casts reproducing different edentulous maxillae with four tilted implants were used. Four scan bodies were screwed onto the low-profile abutments, and a digital intraoral scanner was used to perform five digital impressions of each master cast. To assess trueness, a metal framework of the best digital impression was produced with computer-aided design/computer-assisted manufacture (CAD/CAM) technology and passive fit was assessed with the Sheffield test. Gaps between the frameworks and the implant analogs were measured with a stereomicroscope. To assess precision, three-dimensional (3D) point cloud processing software was used to measure the deviations between the five digital impressions of each cast by producing a color map. The deviation values were grouped in three classes, and differences were assessed between class 2 (representing lower discrepancies) and the assembled classes 1 and 3 (representing the higher negative and positive discrepancies, respectively). The frameworks showed a mean gap of < 30 μm (range: 2 to 47 μm). A statistically significant difference was found between the two groups by the 3D point cloud software, with higher frequencies of points in class 2 than in grouped classes 1 and 3 (P < .001). Within the limits of this in vitro study, it appears that a digital impression may represent a reliable method for fabricating full-arch implant frameworks with good passive fit when tilted implants are present.

Comparison of radiation dose, workflow, patient comfort and financial break-even of standard digital radiography and a novel biplanar low-dose X-ray system for upright full-length lower limb and whole spine radiography.

PubMed

Dietrich, Tobias J; Pfirrmann, Christian W A; Schwab, Alexander; Pankalla, Katja; Buck, Florian M

2013-07-01

To compare the radiation dose, workflow, patient comfort, and financial break-even of a standard digital radiography and a biplanar low-dose X-ray system. A standard digital radiography system (Ysio, Siemens Healthcare, Erlangen, Germany) was compared with a biplanar X-ray unit (EOS, EOS imaging, Paris, France) consisting of two X-ray tubes and slot-scanning detectors, arranged at an angle of 90° allowing simultaneous vertical biplanar linear scanning in the upright patient position. We compared data of standing full-length lower limb radiographs and whole spine radiographs of both X-ray systems. Dose-area product was significantly lower for radiographs of the biplanar X-ray system than for the standard digital radiography system (e.g. whole spine radiographs; standard digital radiography system: 392.2 ± 231.7 cGy*cm(2) versus biplanar X-ray system: 158.4 ± 103.8 cGy*cm(2)). The mean examination time was significantly shorter for biplanar radiographs compared with standard digital radiographs (e.g. whole spine radiographs: 449 s vs 248 s). Patients' comfort regarding noise was significantly higher for the standard digital radiography system. The financial break-even point was 2,602 radiographs/year for the standard digital radiography system compared with 4,077 radiographs/year for the biplanar X-ray unit. The biplanar X-ray unit reduces radiation exposure and increases subjective noise exposure to patients. The biplanar X-ray unit demands a higher number of examinations per year for the financial break-even point, despite the lower labour cost per examination due to the shorter examination time.

Benchmarks of a III-V TFET technology platform against the 10-nm CMOS FinFET technology node considering basic arithmetic circuits

NASA Astrophysics Data System (ADS)

Strangio, S.; Palestri, P.; Lanuzza, M.; Esseni, D.; Crupi, F.; Selmi, L.

2017-02-01

In this work, a benchmark for low-power digital applications of a III-V TFET technology platform against a conventional CMOS FinFET technology node is proposed. The analysis focuses on full-adder circuits, which are commonly identified as representative of the digital logic environment. 28T and 24T topologies, implemented in complementary-logic and transmission-gate logic, respectively, are investigated. Transient simulations are performed with a purpose-built test-bench on each single-bit full adder solution. The extracted delays and energy characteristics are post-processed and translated into figures-of-merit for multi-bit ripple-carry-adders. Trends related to the different full-adder implementations (for the same device technology platform) and to the different technology platforms (for the same full-adder topology) are presented and discussed.

Disparities in digital reporting of illness: A demographic and socioeconomic assessment.

PubMed

Henly, Samuel; Tuli, Gaurav; Kluberg, Sheryl A; Hawkins, Jared B; Nguyen, Quynh C; Anema, Aranka; Maharana, Adyasha; Brownstein, John S; Nsoesie, Elaine O

2017-08-01

Although digital reports of disease are currently used by public health officials for disease surveillance and decision making, little is known about environmental factors and compositional characteristics that may influence reporting patterns. The objective of this study is to quantify the association between climate, demographic and socio-economic factors on digital reporting of disease at the US county level. We reference approximately 1.5 million foodservice business reviews between 2004 and 2014, and use census data, machine learning methods and regression models to assess whether digital reporting of disease is associated with climate, socio-economic and demographic factors. The results show that reviews of foodservice businesses and digital reports of foodborne illness follow a clear seasonal pattern with higher reporting observed in the summer, when most foodborne outbreaks are reported and to a lesser extent in the winter months. Additionally, factors typically associated with affluence (such as, higher median income and fraction of the population with a bachelor's degrees) were positively correlated with foodborne illness reports. However, restaurants per capita and education were the most significant predictors of illness reporting at the US county level. These results suggest that well-known health disparities might also be reflected in the online environment. Although this is an observational study, it is an important step in understanding disparities in the online public health environment. Copyright © 2017 The Author(s). Published by Elsevier Inc. All rights reserved.

Arbitrary precision value overlay and alignment system by double positioning of mask and wafer and electronic datum and nano sensor (notice of removal)

NASA Astrophysics Data System (ADS)

Bear, Wynn L.; Xiong, Xiang-Wen

2009-03-01

This paper (SPIE Paper 727249) was removed from the SPIE Digital Library on 30 April 2009 upon learning that the two names associated with this publication record, Xiang-Wen Xiong and Wynn L. Bear, are actually the same individual and not two different authors. This is not sanctioned by SPIE. As stated in the SPIE Guidelines for Professional Conduct and Publishing Ethics, "SPIE considers it the professional responsibility of all authors to ensure that the authorship of submitted papers properly reflects the contributions and consent of all authors." A serious violation of these guidelines is evident in this case. It is SPIE policy to remove papers from the SPIE Digital Library where serious professional misconduct has occurred and to impose additional sanctions as appropriate.

Video Games and Learning: Teaching and Participatory Culture in the Digital Age. Technology, Education--Connections (the TEC Series)

ERIC Educational Resources Information Center

Squire, Kurt

2011-01-01

Can we learn socially and academically valuable concepts and skills from video games? How can we best teach the "gamer generation?" This accessible book describes how educators and curriculum designers can harness the participatory nature of digital media and play. The author presents a comprehensive model of games and learning that integrates…

Landsat detection of oil from natural seeps

USGS Publications Warehouse

Deutsch, M.; Estes, J.E.

1980-01-01

Oil on the ocean surface from the natural seeps in the Santa Barbara Channel, California, could not be detected on frames of any of the four bands of standard Landsat positive or negative film transparencies, nor could the slicks be detected using digital scaling, density slicing, or ratioing techniques. Digital contrast-stretch enhancement, however, showed the distribution of oil on the surface. - from Authors

From Digital Natives to Digital Wisdom: Hopeful Essays for 21st Century Learning

ERIC Educational Resources Information Center

Prensky, Marc

2012-01-01

What can you learn on a cell phone? Almost anything! How does that concept fit with our traditional system of education? It doesn't. Best-selling author and futurist Marc Prensky's book of essays challenges educators to "reboot" and make the changes necessary to prepare students for 21st century careers. His "bottom-up" vision is based on…

Passport to Digital Citizenship: Journey toward Appropriate Technology Use at School and at Home

ERIC Educational Resources Information Center

Ribble, Mike

2009-01-01

Technology has changed people's lives. In fewer than 30 years, people have gone from barely hearing about cell phones, laptops, and MP3 players to almost not being able to live without them. Digital citizenship describes the norms of appropriate, responsible behavior with regard to technology use. In this article, the author presents nine elements…

Digital Readers: The Next Chapter in E-Book Reading and Response

ERIC Educational Resources Information Center

Larson, Lotta C.

2010-01-01

The basic features of digital reading devices (such as the Amazon Kindle) are described in this article. The author also considers how such devices can advance e-book readership among primary students by offering new avenues for accessing and interacting with a wide array of texts. Rooted in the transactional theory of reader response and a new…

Exploring Adolescents' Multimodal Responses to "The Kite Runner": Understanding How Students Use Digital Media for Academic Purposes

ERIC Educational Resources Information Center

Jocius, Robin

2013-01-01

This qualitative study explores how adolescent high school students in an AP English class used multiple forms of media (the internet, digital video, slide show software, video editing tools, literary texts, and writing) to respond to and analyze a contemporary novel, "The Kite Runner". Using a multimodal analysis framework, the author explores…

"Put Us on the Map": Place-Based Media Production and Critical Inquiry in CTE

ERIC Educational Resources Information Center

Jocson, Korina M.

2016-01-01

Many young people today are enacting rich literacies in their lives through the use of digital technologies. While this may be so, there is a narrowing of literacy instruction under neoliberal reforms at a time of increasing informational and digital technologies. In this article, the author draws on an ethnographic study of high school multimedia…

New Technology and Digital Worlds: Analyzing Evidence of Equity in Access, Use, and Outcomes

ERIC Educational Resources Information Center

Warschauer, Mark; Matuchniak, Tina

2010-01-01

In this chapter, the authors take a broad perspective on how to analyze issues of technology and equity for youth in the United States. They begin with "access" as a starting point, but consider not only whether diverse groups of youth have digital media available to them but also how that access is supported or constrained by…

What Counts as Writing? An Examination of Students' Use of Social Media Platforms as Alternative Authoring Paths

ERIC Educational Resources Information Center

Stewart, Olivia Grace

2017-01-01

In this article-style dissertation, I explore how students used digital technologies, specifically three social media platforms, as multimodal writing platforms while creating a digital portfolio in a senior English class. These platforms are 1) Weebly pages: a website building platform, 2) Weebly Blogs: a feature of Weebly, and 3) Instagram: a…

Podcasting and Digital Video in the Classroom: A Call for Research

ERIC Educational Resources Information Center

Newman, John H.

2011-01-01

A case is directed at digital immigrants to utilize mobile computing devices such as an Apple iPod to deliver content to students in self-contained special education classrooms. The author discusses the current state of the use of iPods in classrooms, and how research using these devices has been limited to institutions of higher learning, while…

Teaching Students How to Research the Past: Historians and Librarians in the Digital Age

ERIC Educational Resources Information Center

Daniel, Dominique

2012-01-01

In this article, the author examines some issues linked to the impact of new technologies on teaching. In a 2003 survey, respondents stressed that the priority was to understand "how new media are changing student learning." There are by now numerous studies that attempt to assess how students conduct research and learn in the digital age, but…

Back Translation: An Emerging Sophisticated Cyber Strategy to Subvert Advances in "Digital Age" Plagiarism Detection and Prevention

ERIC Educational Resources Information Center

Jones, Michael; Sheridan, Lynnaire

2015-01-01

Advances have been made in detecting and deterring the student plagiarism that has accompanied the uptake and development of the internet. Many authors from the late 1990s onwards grappled with plagiarism in the digital age, presenting articles that were provoking and established the foundation for strategies to address cyber plagiarism, including…

Digital Dome versus Desktop Display: Learning Outcome Assessments by Domain Experts

ERIC Educational Resources Information Center

Jacobson, Jeffery

2013-01-01

In previous publications, the author reported that students learned about Egyptian architecture and society by playing an educational game based on a virtual representation of a temple. Students played the game in a digital dome or on a standard desktop computer, and (each) then recorded a video tour of the temple. Those who had used the dome…

Digital multimedia books produced using iBooks Author for pre-operative surgical patient information.

PubMed

Briggs, Matthew; Wilkinson, Caroline; Golash, Aprajay

2014-10-01

Presenting patients with medical information and ensuring informed consent can be difficult due to patients with varying levels of literacy, physical and mental disabilities and spoken languages. Patients obtaining information from external sources, such as the internet, can also be problematic as the information can be irrelevant, inaccurate or misleading. A patient satisfaction study was performed in order to assess the effectiveness of using ebooks in order to communicate pre and post surgical information to neurosurgical patients. 3 digital books were produced using iBooks Author (a free desktop publishing program designed by Apple) including ACDF (anterior cervical discectomy and fusion), lumbar laminectomy and lumbar discectomy. Each book contained written information organised into sections and chapters along with an array of multimedia elements including 3D animations, interactive diagrams, 3D models of anatomy and patient experience videos. 32 volunteer patients were then presented with the digital books via an iPad during their preoperative assessment and then asked to complete a questionnaire. The results demonstrated a demand for this type of digital presentation of medical information and also showed patients no longer felt the need to seek further information from external sources.

Association between diabetic retinopathy and subclinical atherosclerosis in China: Results from a community-based study.

PubMed

Liu, Yu; Teng, Xiangyu; Zhang, Wei; Zhang, Ruifeng; Liu, Wei

2015-09-01

To evaluate the association of diabetic retinopathy with subclinical atherosclerosis in middle-aged and elderly Chinese with type 2 diabetes. A cross-sectional community-based study was performed among 1607 patients aged 40 years or older in Shanghai. Non-mydriatic digital fundus photography examination was used in diabetic retinopathy detection. Presence of elevated carotid intima-media thickness or carotid plaque was defined as subclinical atherosclerosis. The prevalence of diabetic retinopathy was 15.1% in total patients. Patients with diabetic retinopathy were more likely to have elevated carotid intima-media thickness, carotid plaque and subclinical atherosclerosis than those without diabetic retinopathy (37.9% vs 30.7%, 57.6% vs 49.6% and 64.6% vs 57.1%, respectively). The presence of diabetic retinopathy was significantly associated with increased odds of subclinical atherosclerosis (odds ratio = 1.93, 95% confidence interval = 1.03-3.60) after full adjustments. The presence of diabetic retinopathy was significantly associated with subclinical atherosclerosis in middle-aged and elderly patients with type 2 diabetics in China. © The Author(s) 2015.

Fertility drugs and breast cancer risk.

PubMed

Lo Russo, G; Tomao, F; Spinelli, G P; Prete, A A; Stati, V; Panici, P Benedetti; Papa, A; Tomao, S

2015-01-01

Female infertility is a widespread problem in Western countries. During past years, an association between ovarian stimulation in unfertile women and breast cancer risk has been hypothesized. Purpose of the present investigation was to comment the most updated studies about an eventual relationship between fertility drugs and breast cancer risk. The authors performed a review of the current literature regarding the possible association between the use of fertility drugs and the enhanced risk of breast cancer. They searched digital databases including Pubmed, EMBASE, and the Cochrane Library. The literature search was performed using various combinations of keywords. They carefully analyzed only the full versions of all relevant studies. Using various combination of keywords, the authors examined 930 papers. They considered only papers written in English. With these criteria they selected the studies that had been discussed in detail on the text. None of the works commented provides an indisputable evidence about a link between ovarian stimulation and breast cancer risk. On the contrary, most of them actually suggest a lack of interaction between them or even a protective role of ovarian stimulation.

[Comparison of dignity determination of mammographic microcalcification with two systems for digital full-field mammography with different detector resolution: a retrospective clinical study].

PubMed

Schulz-Wendtland, R; Hermann, K-P; Adamietz, B; Meier-Meitinger, M; Wenkel, E; Lell, M; Anders, K; Uder, M

2011-02-01

The aim of this retrospective clinical study was to compare the diagnostic accuracy of the novel 50 µm FFDM (full-field digital mammography) system (DR) with an established 70 µm system (DR) in the differential diagnosis between benign and malignant clusters of microcalcification (n=50) (BI-RADS™ classification 4/5) and to assess the possible incremental value of the 50 µm pixel-pitch on specificity. From March 2009 to September 2009, 50 patients underwent full-field digital mammography (FFDM) (detector resolution 70 µm) (Novation, Siemens, Erlangen, Germany). As there were suspicious signs of microcalcification classified with BI-RADS™ 4/5 after diagnosis and preoperative wire localization, control images were made with the new FFDM system (detector: resolution 50 µm) (Amulet, Fujifilm, Tokyo, Japan) with the same exposure parameters. The diagnosis was determined after the operation by five radiologists with different experience in digital mammography from randomly distributed mediolateral views (monitor reading) whose results were correlated with the final histology of all lesions. Histopathology revealed 19 benign and 31 malignant lesions in 50 patients after open biopsy. The results of the five readers showed a higher sensitivity of the new FFDM system (80.0%) in the ability to recognize malignant microcalcification in comparison to the established system (74.8%). The specificity (75.8 versus 71.6%) was slightly higher for the new system but these results were not statistically significant (p<0.001). Considering the diagnostic accuracy, the new system (detector: resolution 50 µm) was also slightly superior to the well-known system (detector: resolution 70 µm) (80.1% versus 76.4%). Our study has shown that the new full-field digital mammography system using the novel detector compared with the already established FFDM system with respect to the assessment of microcalcification is at least equivalent.

The Design of the Digital Multiplexer based on Power Carrier Communication on Sports Venues

NASA Astrophysics Data System (ADS)

Lu, Ming-jing; Liang, Li; Yu, Xiao-yan

In this paper, one kind of double CPU, the low power loss, the low cost digital multiplexer has been designed in conducted the full research to this communicated way, which is satisfied the need of the electric power correspondence transmission system, especially in sports venues. This article is elaborated the digital multiplexer's hardware and the software principle of design in detail, carries on the simulation using the monolithic integrated circuit simulator, has achieved the satisfactory effect through the debug.

Quadruplex digital flight control system assessment

NASA Technical Reports Server (NTRS)

Mulcare, D. B.; Downing, L. E.; Smith, M. K.

1988-01-01

Described are the development and validation of a double fail-operational digital flight control system architecture for critical pitch axis functions. Architectural tradeoffs are assessed, system simulator modifications are described, and demonstration testing results are critiqued. Assessment tools and their application are also illustrated. Ultimately, the vital role of system simulation, tailored to digital mechanization attributes, is shown to be essential to validating the airworthiness of full-time critical functions such as augmented fly-by-wire systems for relaxed static stability airplanes.

The digital media revolution: what it means for the AJR.

PubMed

Kanne, Jeffrey P

2011-07-01

The digital media revolution is in full swing, fueled by rapid growth of the Internet and proliferation of handheld devices capable of accessing electronically data from virtually anywhere. With this growth of digital media, the printing industry is seeing declines in circulation and advertising revenue. Scholarly journals, including the American Journal of Roentgenology, are not immune from this changing paradigm. The scholarly journal of the future should be a platform for the active exchange of new information and ideas.

Open data and digital morphology.

PubMed

Davies, Thomas G; Rahman, Imran A; Lautenschlager, Stephan; Cunningham, John A; Asher, Robert J; Barrett, Paul M; Bates, Karl T; Bengtson, Stefan; Benson, Roger B J; Boyer, Doug M; Braga, José; Bright, Jen A; Claessens, Leon P A M; Cox, Philip G; Dong, Xi-Ping; Evans, Alistair R; Falkingham, Peter L; Friedman, Matt; Garwood, Russell J; Goswami, Anjali; Hutchinson, John R; Jeffery, Nathan S; Johanson, Zerina; Lebrun, Renaud; Martínez-Pérez, Carlos; Marugán-Lobón, Jesús; O'Higgins, Paul M; Metscher, Brian; Orliac, Maëva; Rowe, Timothy B; Rücklin, Martin; Sánchez-Villagra, Marcelo R; Shubin, Neil H; Smith, Selena Y; Starck, J Matthias; Stringer, Chris; Summers, Adam P; Sutton, Mark D; Walsh, Stig A; Weisbecker, Vera; Witmer, Lawrence M; Wroe, Stephen; Yin, Zongjun; Rayfield, Emily J; Donoghue, Philip C J

2017-04-12

Over the past two decades, the development of methods for visualizing and analysing specimens digitally, in three and even four dimensions, has transformed the study of living and fossil organisms. However, the initial promise that the widespread application of such methods would facilitate access to the underlying digital data has not been fully achieved. The underlying datasets for many published studies are not readily or freely available, introducing a barrier to verification and reproducibility, and the reuse of data. There is no current agreement or policy on the amount and type of data that should be made available alongside studies that use, and in some cases are wholly reliant on, digital morphology. Here, we propose a set of recommendations for minimum standards and additional best practice for three-dimensional digital data publication, and review the issues around data storage, management and accessibility. © 2017 The Authors.

3D digital image correlation methods for full-field vibration measurement

NASA Astrophysics Data System (ADS)

Helfrick, Mark N.; Niezrecki, Christopher; Avitabile, Peter; Schmidt, Timothy

2011-04-01

In the area of modal test/analysis/correlation, significant effort has been expended over the past twenty years in order to make reduced models and to expand test data for correlation and eventual updating of the finite element models. This has been restricted by vibration measurements which are traditionally limited to the location of relatively few applied sensors. Advances in computers and digital imaging technology have allowed 3D digital image correlation (DIC) methods to measure the shape and deformation of a vibrating structure. This technique allows for full-field measurement of structural response, thus providing a wealth of simultaneous test data. This paper presents some preliminary results for the test/analysis/correlation of data measured using the DIC approach along with traditional accelerometers and a scanning laser vibrometer for comparison to a finite element model. The results indicate that all three approaches correlated well with the finite element model and provide validation for the DIC approach for full-field vibration measurement. Some of the advantages and limitations of the technique are presented and discussed.

A frequency standard via spectrum analysis and direct digital synthesis

NASA Astrophysics Data System (ADS)

Li, Dawei; Shi, Daiting; Hu, Ermeng; Wang, Yigen; Tian, Lu; Zhao, Jianye; Wang, Zhong

2014-11-01

We demonstrated a frequency standard based on a detuned coherent population beating phenomenon. In this phenomenon, the beat frequency of the radio frequency for laser modulation and the hyperfine splitting can be obtained by digital signal processing technology. After analyzing the spectrum of the beat frequency, the fluctuation information is obtained and applied to compensate for the frequency shift to generate the standard frequency by the digital synthesis method. Frequency instability of 2.6 × 1012 at 1000 s is observed in our preliminary experiment. By eliminating the phase-locking loop, the method will enable us to achieve a full-digital frequency standard with remarkable stability.

Issues Facing Academic Library Consortia and Perceptions of Members of the Illinois Digital Academic Library.

ERIC Educational Resources Information Center

Brooks, Sam; Dorst, Thomas J.

2002-01-01

Discusses the role of consortia in academic libraries, specifically the Illinois Digital Academic Library (IDAL), and describes a study conducted by the IDAL that investigated issues surrounding full text database research including stability of content, vendor communication, embargo periods, publisher concerns, quality of content, linking and…

Stochastic architecture for Hopfield neural nets

NASA Technical Reports Server (NTRS)

Pavel, Sandy

1992-01-01

An expandable stochastic digital architecture for recurrent (Hopfield like) neural networks is proposed. The main features and basic principles of stochastic processing are presented. The stochastic digital architecture is based on a chip with n full interconnected neurons with a pipeline, bit processing structure. For large applications, a flexible way to interconnect many such chips is provided.

Digital Talking Books: Planning for the Future.

ERIC Educational Resources Information Center

Cookson, John; Cylke, Frank Kurt; Dixon, Judith; Fistick, Robert E.; Fitzpatrick, Vicki; Kormann, Wells B.; Moodie, Michael M.; Redmond, Linda; Thuronyi, George

This report describes the plans of the National Library Service for the Blind and Physically Handicapped (NLS) to convert their talking books service to a digitally based audio system. The NLS program selects and produces full-length books and magazines in braille and on recorded disc and cassettes and distributes them to a cooperating network of…

Developing Digital Information Literacy in Higher Education: Obstacles and Supports

ERIC Educational Resources Information Center

Jeffrey, Lynn; Hegarty, Bronwyn; Kelly, Oriel; Penman, Merrolee; Coburn, Dawn; McDonald, Jenny

2011-01-01

The development of digital information literacy (DIL) has been slow in comparison to changes in information communication technologies, and this remains an issue for the higher education sector. Competency in such skills is essential to full participation in society and work. In addition, these skills are regarded as underpinning the ability to…

Developing Thoughtful "Cybercitizens"

ERIC Educational Resources Information Center

Berson, Michael J.; Berson, Ilene R.

2004-01-01

What does it mean to be a citizen in a digital world where technology has facilitated global connections? The children of today are immersed in a digital age, and as increasing numbers of students go online, they require skills to securely and responsibly take full advantage of computers and the Internet. Despite the natural enthusiasm that many…

78 FR 42487 - Announcement of Grant Application Deadlines; Deadlines and Funding Levels

Federal Register 2010, 2011, 2012, 2013, 2014

2013-07-16

... full digital transition of their stations across all equipment. Rural stations often have translators... FCC deadline did not apply to translators, and in 2011 the FCC adopted a final deadline for analog-to-digital conversion of all translators by September 1, 2015. Because of this, translators have been allowed...

The Virtual Hospital: experiences in creating and sustaining a digital library.

PubMed Central

D'Alessandro, M P; Galvin, J R; Erkonen, W E; Choi, T A; Lacey, D L; Colbert, S I

1998-01-01

A university and its faculty encompass a wealth of content, which is often freely supplied to commercial publishers who profit from it. Emerging digital library technology holds promise for allowing the creation of digital libraries and digital presses that can allow faculty and universities to bypass commercial publishers, retain control of their content, and distribute it directly to users, allowing the university and faculty to better serve their constituencies. The purpose of this paper is to show how this can be done. A methodology for overcoming the technical, social, political, and economic barriers involved in creating, distributing and organizing a digital library was developed, implemented, and refined over seven years. Over the seven years, 120 textbooks and booklets were placed in the Virtual Hospital digital library, from 159 authors in twenty-nine departments and four colleges at The University of Iowa. The digital library received extensive use by individuals around the world. A new paradigm for academic publishing was created, involving a university and faculty owned peer reviewed digital press implemented using digital library technology. The concept has been embraced by The University of Iowa, and it has pledged to sustain the digital press in order to allow. The University of Iowa to fulfill its mission of creating, organizing, and disseminating information better. PMID:9803300

In Vivo Digital Phyto Imaging (IDPI) in Juglans Nigra Seeds

Treesearch

John A. Vozzo; R. Patel; A. Terrel

1998-01-01

A major disadvantage of conventional seed radiography is that the resulting image will not distinguish full-viable seeds from full-nonviable. Empty seeds will imbibe sufficient water to appear full, but these are easily distinguished by radiography before imbibition. Full seeds, both viable and nonviable, have 25 to 35% moisture content when freshly collected. This is...

Social Aspects of Photobooks: Improving Photobook Authoring from Large-Scale Multimedia Analysis

NASA Astrophysics Data System (ADS)

Sandhaus, Philipp; Boll, Susanne

With photo albums we aim to capture personal events such as weddings, vacations, and parties of family and friends. By arranging photo prints, captions and paper souvenirs such as tickets over the pages of a photobook we tell a story to capture and share our memories. The photo memories captured in such a photobook tell us much about the content and the relevance of the photos for the user. The way in which we select photos and arrange them in the photo album reveal a lot about the events, persons and places on the photos: captions describe content, closeness and arrangement of photos express relations between photos and their content and especially about the social relations of the author and the persons present in the album. Nowadays the process of photo album authoring has become digital, photos and texts can be arranged and laid out with the help of authoring tools in a digital photo album which can be printed as a physical photobook. In this chapter we present results of the analysis of a large repository of digitally mastered photobooks to learn about their social aspects. We explore to which degree a social aspect can be identified and how expressive and vivid different classes of photobooks are. The photobooks are anonymized, real world photobooks from customers of our industry partner CeWe Color. The knowledge gained from this social photobook analysis is meant both to better understand how people author their photobooks and to improve the automatic selection of and layout of photobooks.

Expanding the potential of standard flow cytometry by extracting fluorescence lifetimes from cytometric pulse shifts

PubMed Central

Cao, Ruofan; Naivar, Mark A; Wilder, Mark; Houston, Jessica P

2014-01-01

Fluorescence lifetime measurements provide information about the fluorescence relaxation, or intensity decay, of organic fluorophores, fluorescent proteins, and other inorganic molecules that fluoresce. The fluorescence lifetime is emerging in flow cytometry and is helpful in a variety of multiparametric, single cell measurements because it is not impacted by nonlinearity that can occur with fluorescence intensity measurements. Yet time-resolved cytometry systems rely on major hardware modifications making the methodology difficult to reproduce. The motivation of this work is, by taking advantage of the dynamic nature of flow cytometry sample detection and applying digital signal processing methods, to measure fluorescence lifetimes using an unmodified flow cytometer. We collect a new lifetime-dependent parameter, referred to herein as the fluorescence-pulse-delay (FPD), and prove it is a valid representation of the average fluorescence lifetime. To verify we generated cytometric pulses in simulation, with light emitting diode (LED) pulsation, and with true fluorescence measurements of cells and microspheres. Each pulse is digitized and used in algorithms to extract an average fluorescence lifetime inherent in the signal. A range of fluorescence lifetimes is measurable with this approach including standard organic fluorophore lifetimes (∼1 to 22 ns) as well as small, simulated shifts (0.1 ns) under standard conditions (reported herein). This contribution demonstrates how digital data acquisition and signal processing can reveal time-dependent information foreshadowing the exploitation of full waveform analysis for quantification of similar photo-physical events within single cells. © 2014 The Authors. Published by Wiley Periodicals, Inc. PMID:25274073

Cost-estimating for commercial digital printing

NASA Astrophysics Data System (ADS)

Keif, Malcolm G.

2007-01-01

The purpose of this study is to document current cost-estimating practices used in commercial digital printing. A research study was conducted to determine the use of cost-estimating in commercial digital printing companies. This study answers the questions: 1) What methods are currently being used to estimate digital printing? 2) What is the relationship between estimating and pricing digital printing? 3) To what extent, if at all, do digital printers use full-absorption, all-inclusive hourly rates for estimating? Three different digital printing models were identified: 1) Traditional print providers, who supplement their offset presswork with digital printing for short-run color and versioned commercial print; 2) "Low-touch" print providers, who leverage the power of the Internet to streamline business transactions with digital storefronts; 3) Marketing solutions providers, who see printing less as a discrete manufacturing process and more as a component of a complete marketing campaign. Each model approaches estimating differently. Understanding and predicting costs can be extremely beneficial. Establishing a reliable system to estimate those costs can be somewhat challenging though. Unquestionably, cost-estimating digital printing will increase in relevance in the years ahead, as margins tighten and cost knowledge becomes increasingly more critical.

Full-field vibration measurements of the violin using digital stroboscopic holographic interferometry and electromagnetic stimulation of the strings

NASA Astrophysics Data System (ADS)

Keersmaekers, Lissa; Keustermans, William; De Greef, Daniël; Dirckx, Joris J. J.

2016-06-01

We developed a setup in which the strings of the violin are driven electromagnetically, and the resulting vibration of the instrument is measured with digital stroboscopic holography. A 250mW single mode green laser beam is chopped using an acousto-optic modulator, generating illumination pulses of 2% of the vibration period. The phase of the illumination pulse is controlled by a programmable function generator so that digital holograms can be recorded on a number of subsequent time positions within the vibration phase. From these recordings, the out of plane motion as a function of time is reconstructed in full field. We show results of full-field vibration amplitude and vibration phase maps, and time resolved full-field deformations of the violin back plane. Time resolved measurements show in detail how the deformation of the violin plane changes as a function of time at different frequencies. We found very different behavior under acoustic stimulation of the instrument and when using electromagnetic stimulation of a string. The aim of the work it to gather data which can be used in power flow calculations to study how the energy of the strings is conducted to the body of the violin and eventually is radiated as sound.

Full-field vibration measurements of the violin using digital stroboscopic holographic interferometry and electromagnetic stimulation of the strings

DOE Office of Scientific and Technical Information (OSTI.GOV)

Keersmaekers, Lissa; Keustermans, William, E-mail: william.keustermans@uantwerpen.be; De Greef, Daniël

We developed a setup in which the strings of the violin are driven electromagnetically, and the resulting vibration of the instrument is measured with digital stroboscopic holography. A 250 mW single mode green laser beam is chopped using an acousto-optic modulator, generating illumination pulses of 2% of the vibration period. The phase of the illumination pulse is controlled by a programmable function generator so that digital holograms can be recorded on a number of subsequent time positions within the vibration phase. From these recordings, the out of plane motion as a function of time is reconstructed in full field. Wemore » show results of full-field vibration amplitude and vibration phase maps, and time resolved full-field deformations of the violin back plane. Time resolved measurements show in detail how the deformation of the violin plane changes as a function of time at different frequencies. We found very different behavior under acoustic stimulation of the instrument and when using electromagnetic stimulation of a string. The aim of the work it to gather data which can be used in power flow calculations to study how the energy of the strings is conducted to the body of the violin and eventually is radiated as sound.« less

Current Barriers to Large-scale Interoperability of Traceability Technology in the Seafood Sector.

PubMed

Hardt, Marah J; Flett, Keith; Howell, Colleen J

2017-08-01

Interoperability is a critical component of full-chain digital traceability, but is almost nonexistent in the seafood industry. Using both quantitative and qualitative methodology, this study explores the barriers impeding progress toward large-scale interoperability among digital traceability systems in the seafood sector from the perspectives of seafood companies, technology vendors, and supply chains as a whole. We highlight lessons from recent research and field work focused on implementing traceability across full supply chains and make some recommendations for next steps in terms of overcoming challenges and scaling current efforts. © 2017 Institute of Food Technologists®.

Current issues with standards in the measurement and documentation of human skeletal anatomy.

PubMed

Magee, Justin; McClelland, Brian; Winder, John

2012-09-01

Digital modeling of human anatomy has become increasingly important and relies on well-documented quantitative anatomy literature. This type of documentation is common for the spine and pelvis; however, significant issues exist due to the lack of standardization in measurement and technique. Existing literature on quantitative anatomy for the spine and pelvis of white adults (aged 18-65 years, separated into decadal categories) was reviewed from the disciplines of anatomy, manipulative therapy, anthropometrics, occupational ergonomics, biomechanics and forensic science. The data were unified into a single normative model of the sub-axial spine. Two-dimensional orthographic drawings were produced from the 590 individual measurements identified, which informed the development of a 3D digital model. A similar review of full range of motion data was conducted as a meta-analysis and the results were applied to the existing model, providing an inter-connected, articulated digital spine. During these data analysis processes several inconsistencies were observed accompanied by an evidential lack of standardization with measurement and recording of data. These have been categorized as: anatomical terminology; scaling of measurements; measurement methodology, dimension and anatomical reference positions; global coordinate systems. There is inconsistency in anatomical terminology where independent researchers use the same terms to describe different aspects of anatomy or different terms for the same anatomy. Published standards exist for measurement methods of the human body regarding spatial interaction, anthropometric databases, automotive applications, clothing industries and for computer manikins, but none exists for skeletal anatomy. Presentation of measurements often lacks formal structure in clinical publications, seldom providing geometric reference points, therefore making digital reconstruction difficult. Published quantitative data does not follow existing international published standards relating to engineering drawing and visual communication. Large variations are also evident in standards or guidelines used for global coordinate systems across biomechanics, ergonomics, software systems and 3D software applications. This paper identifies where established good practice exists and suggests additional recommendations, informing an improved communication protocol, to assist reconstruction of skeletal anatomy using 3D digital modeling. © 2012 The Authors. Journal of Anatomy © 2012 Anatomical Society.

Task switching and response correspondence in the psychological refractory period paradigm

NASA Technical Reports Server (NTRS)

Lien, Mei-Ching; Schweickert, Richard; Proctor, Robert W.

2003-01-01

Three experiments examined the effects of task switching and response correspondence in a psychological refractory period paradigm. A letter task (vowel-consonant) and a digit task (odd-even) were combined to form 4 possible dual-task pairs in each trial: letter-letter, letter-digit, digit-digit, and digit-letter. Foreknowledge of task transition (repeat or switch) and task identity (letter or digit) was varied across experiments: no foreknowledge in Experiment 1, partial foreknowledge (task transition only) in Experiment 2, and full foreknowledge in Experiment 3. For all experiments, the switch cost for Task 2 was additive with stimulus onset asynchrony, and the response-correspondence effect for Task 2 was numerically smaller in the switch condition than in the repeat condition. These outcomes suggest that reconfiguration for Task 2 takes place after the central processing of Task 1 and that the crosstalk correspondence effect is due to response activation by way of stimulus-response associations.

CEA SMAD 2016 Digitizer Evaluation.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Merchant, Bion J.

Sandia National Laboratories has tested and evaluated an updated SMAD digitizer, developed by the French Alternative Energies and Atomic Energy Commission (CEA). The SMAD digitizers are intended to record sensor output for seismic and infrasound monitoring applications. The purpose of this digitizer evaluation is to measure the performance characteristics in such areas as power consumption, input impedance, sensitivity, full scale, self-noise, dynamic range, system noise, response, passband, and timing. The SMAD digitizers have been updated since their last evaluation by Sandia to improve their performance when recording at a sample rate of 20 Hz for infrasound applications and 100 Hzmore » for hydro-acoustic seismic stations. This evaluation focuses primarily on the 20 Hz and 100 Hz sample rates. The SMAD digitizers are being evaluated for potential use in the International Monitoring System (IMS) of the Comprehensive Nuclear Test- Ban-Treaty Organization (CTBTO).« less

Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter

DOEpatents

Buchenauer, C.J.

1981-09-23

The quadrature phase angle phi (t) of a pair of quadrature signals S/sub 1/(t) and S/sub 2/(t) is digitally encoded on a real time basis by a quadrature digitizer for fractional phi (t) rotational excursions and by a quadrature up/down counter for full phi (t) rotations. The pair of quadrature signals are of the form S/sub 1/(t) = k(t) sin phi (t) and S/sub 2/(t) = k(t) cos phi (t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle phi (t).

Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter

DOEpatents

Buchenauer, C. Jerald

1984-01-01

The quadrature phase angle .phi.(t) of a pair of quadrature signals S.sub.1 (t) and S.sub.2 (t) is digitally encoded on a real time basis by a quadrature digitizer for fractional .phi.(t) rotational excursions and by a quadrature up/down counter for full .phi.(t) rotations. The pair of quadrature signals are of the form S.sub.1 (t)=k(t) sin .phi.(t) and S.sub.2 (t)=k(t) cos .phi.(t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle .phi.(t).

Reading Remixed

ERIC Educational Resources Information Center

Valenza, Joyce Kasman; Stephens, Wendy

2012-01-01

Critics claim that digital technologies are killing reading, but these teacher-librarians have observed that teens are as excited about reading as they ever were. Online communities give these readers opportunities to get to know authors, communicate with other fans, and learn more about books of interest. Publishers and authors are responding to…

Participative Knowledge Production of Learning Objects for E-Books.

ERIC Educational Resources Information Center

Dodero, Juan Manuel; Aedo, Ignacio; Diaz, Paloma

2002-01-01

Defines a learning object as any digital resource that can be reused to support learning and thus considers electronic books as learning objects. Highlights include knowledge management; participative knowledge production, i.e. authoring electronic books by a distributed group of authors; participative knowledge production architecture; and…

Image Acquisition Context

PubMed Central

Bidgood, W. Dean; Bray, Bruce; Brown, Nicolas; Mori, Angelo Rossi; Spackman, Kent A.; Golichowski, Alan; Jones, Robert H.; Korman, Louis; Dove, Brent; Hildebrand, Lloyd; Berg, Michael

1999-01-01

Objective: To support clinically relevant indexing of biomedical images and image-related information based on the attributes of image acquisition procedures and the judgments (observations) expressed by observers in the process of image interpretation. Design: The authors introduce the notion of “image acquisition context,” the set of attributes that describe image acquisition procedures, and present a standards-based strategy for utilizing the attributes of image acquisition context as indexing and retrieval keys for digital image libraries. Methods: The authors' indexing strategy is based on an interdependent message/terminology architecture that combines the Digital Imaging and Communication in Medicine (DICOM) standard, the SNOMED (Systematized Nomenclature of Human and Veterinary Medicine) vocabulary, and the SNOMED DICOM microglossary. The SNOMED DICOM microglossary provides context-dependent mapping of terminology to DICOM data elements. Results: The capability of embedding standard coded descriptors in DICOM image headers and image-interpretation reports improves the potential for selective retrieval of image-related information. This favorably affects information management in digital libraries. PMID:9925229

Image acquisition context: procedure description attributes for clinically relevant indexing and selective retrieval of biomedical images.

PubMed

Bidgood, W D; Bray, B; Brown, N; Mori, A R; Spackman, K A; Golichowski, A; Jones, R H; Korman, L; Dove, B; Hildebrand, L; Berg, M

1999-01-01

To support clinically relevant indexing of biomedical images and image-related information based on the attributes of image acquisition procedures and the judgments (observations) expressed by observers in the process of image interpretation. The authors introduce the notion of "image acquisition context," the set of attributes that describe image acquisition procedures, and present a standards-based strategy for utilizing the attributes of image acquisition context as indexing and retrieval keys for digital image libraries. The authors' indexing strategy is based on an interdependent message/terminology architecture that combines the Digital Imaging and Communication in Medicine (DICOM) standard, the SNOMED (Systematized Nomenclature of Human and Veterinary Medicine) vocabulary, and the SNOMED DICOM microglossary. The SNOMED DICOM microglossary provides context-dependent mapping of terminology to DICOM data elements. The capability of embedding standard coded descriptors in DICOM image headers and image-interpretation reports improves the potential for selective retrieval of image-related information. This favorably affects information management in digital libraries.

Digital Storytelling as a Narrative Health Promotion Process: Evaluation of a Pilot Study.

PubMed

DiFulvio, Gloria T; Gubrium, Aline C; Fiddian-Green, Alice; Lowe, Sarah E; Del Toro-Mejias, Lizbeth Marie

2016-04-01

Digital storytelling (DST) engages participants in a group-based process to create and share narrative accounts of life events. The process of individuals telling their own stories has not been well assessed as a mechanism of health behavior change. This study looks at outcomes associated with engaging in the DST process for vulnerable youth. The project focused on the experiences of Puerto Rican Latinas between the ages of 15 to 21. A total of 30 participants enrolled in a 4-day DST workshops, with 29 completing a 1 to 3-minute digital story. Self-reported data on several scales (self-esteem, social support, empowerment, and sexual attitudes and behaviors) were collected and analyzed. Participants showed an increase in positive social interactions from baseline to 3-month post workshop. Participants also demonstrated increases in optimism and control over the future immediately after the workshop, but this change was not sustained at 3 months. Analysis of qualitative results and implications are discussed. © The Author(s) 2016.