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1

Special-purpose computer for holography HORN3 with PLD technology  

Microsoft Academic Search

We have designed and built a special-purpose computer for holography, HORN-3 (HOlographic ReconstructioN) using PLD (Programmable Logic Device) technology.We could integrate a pipeline to calculate hologram into one PLD chip, so that we can readily parallelize the system. By mounting two of the PLD chips on a PCI (Peripheral Component Interconnect) universal board, HORN-3 calculates light intensity at high speed

Tomoyoshi Shimobaba; Nobuyuki Masuda; Takashige Sugie; Satoru Hosono; Shinobu Tsukui; Tomoyoshi Ito

2000-01-01

2

Haptic holography : an early computational plastic  

E-print Network

This dissertation introduces haptic holography, a combination of computational modeling and multimodal spatial display, as an early computationalplastic In this work, we combine various holographic displays with a force ...

Plesniak, Wendy J. (Wendy Jean)

2001-01-01

3

Haptic holography: a primitive computational plastic  

Microsoft Academic Search

We describe our work on haptic holography, a combination of computational modeling and multimodal spatial display, which allows a person to see, feel, and interact with three-dimensional freestanding holographic images of material surfaces. In this paper, we combine various holographic displays with a force-feedback device to render multimodal images with programmatically prescribed material properties and behavior. After a brief overview

WENDY J. PLESNIAK; RAVIKANTH S. PAPPU; STEPHEN A. BENTON

2003-01-01

4

Limits of computational white-light holography  

NASA Astrophysics Data System (ADS)

Recently, computational holograms are being used in applications, where previously conventional holograms were applied. Compared to conventional holography, computational holography is based on imaging of virtual objects instead of real objects, which renders them somewhat more flexibility. Here, computational holograms are calculated based on the superposition of point sources, which are placed at the mesh vertices of arbitrary 3D models. The computed holograms have full parallax and exhibit a problem in viewing that we have called "ghosting", which is linked to the viewing of computational holograms based on 3D models close to the image plane. Experimental white-light reconstruction of these holograms showed significant blurring, which is explained here based on simulations of the lateral as well as the axial resolution of a point image with respect to the source spectrum and image distance. In accordance with these simulations, an upper limit of the distance to the image plane is determined, which ensures high quality imaging.

Mader, Sebastian; Kozacki, Tomasz; Tompkin, Wayne

2013-02-01

5

Video-rate computational heterodyne holography.  

PubMed

We present a versatile computational image rendering software of optically acquired holograms. The reported software can process 4 Megapixel 8-bit raw frames from a sensor array acquired at a sustained rate of 80 Hz. Video-rate image rendering is achieved by streamline image processing with commercial computer graphics hardware. For time-averaged holograms acquired in off-axis optical configuration with a frequency-shifted reference beam, wide-field imaging of one tunable spectral component is permitted. This software is validated by phase-stepped hologram rendering, and noncontact monitoring of surface acoustic waves by single and dual sideband hologram rendering. It demonstrates the suitability of holography for video-rate computational laser Doppler imaging in a heterodyne optical configuration. PMID:24686682

Dillée, Antoine; Cancilliere, Romain; Lopes, Fernando; Atlan, Michael

2014-04-01

6

Video-rate computational heterodyne holography  

NASA Astrophysics Data System (ADS)

We present a versatile computational image rendering software of optically-acquired holograms. The reported software can process 4 Megapixel 8-bit raw frames from a sensor array acquired at a sustained rate of 80 Hz. Video-rate image rendering is achieved by streamline image processing with commodity computer graphics hardware. For time-averaged holograms acquired in off-axis optical configuration with a frequency-shifted reference beam, wide-field imaging of one tunable spectral component is permitted. This software is validated by phase-stepped hologram rendering, and non-contact monitoring of surface acoustic waves by single and dual sideband hologram rendering. It demonstrates the suitability of holography for video-rate computational laser Doppler imaging in heterodyne optical configuration.

Dillée, Antoine; Cancilliere, Romain; Lopes, Fernando; Atlan, Michael

2014-04-01

7

Computer-Generated Polarization Holography  

NASA Astrophysics Data System (ADS)

The concept of a computer-generated polarization hologram (CPH) is based on the anisotropic interaction of light with photodichroic crystals. The most unique feature of this technique lies in the realization of phase information recording without the application of the detour phase or the optical path difference effect as used in the conventional technique. Basic principle of information writing and reading scheme using M-centers in alkali halide crystals such as sodium flouride ( NaF ) are descrived, and several technical merits and problems associated with this method are presented. This technique provides a real-time holographic system where accurate recordability and high storage capacity are attainable due to its possibility of recording a calcurated complex amplitude of wavefront only by means of controlling the polarization direction of illuminating beam. We also report on our trially developed automatic hologram making and reading system with the results of its operation experiment, and on discussions concerning the quality of the reconstructed image. We succeeded in completing a full automatic system which is able to make holograms automatically in a short time and in observing a reconstructed image of good quality in real-time.

Nakajima, Masato; Mitsuhashi, Yoshinobu

1983-10-01

8

Holography.  

ERIC Educational Resources Information Center

Holography is a process which numbers among its many applications the creation of holograms--unique three dimensional photographs that show spatial relations and shifts just as they exist in reality. This book recounts the history of holography, tracing its development from Euclid's theory of light rays through Huygens' theory of wave motion to…

Klein, H. Arthur

9

Special-purpose computer for holography HORN4 with recurrence algorithm  

Microsoft Academic Search

We designed and built a special-purpose computer for holography, HORN-4 (HOlographic ReconstructioN) using PLD (Programmable Logic Device) technology. HORN computers have a pipeline architecture. We use HORN-4 as an attached processor to enhance the performance of a general-purpose computer when it is used to generate holograms using a “recurrence formulas” algorithm developed by our previous paper. In the HORN-4 system,

Tomoyoshi Shimobaba; Sinsuke Hishinuma; Tomoyoshi Ito

2002-01-01

10

Advanced technology development multi-color holography  

NASA Technical Reports Server (NTRS)

This is the final report of the Multi-color Holography project. The comprehensive study considers some strategic aspects of multi-color holography. First, various methods of available techniques for accurate fringe counting are reviewed. These are heterodyne interferometry, quasi-heterodyne interferometry, and phase-shifting interferometry. Phase-shifting interferometry was found to be the most suitable for multi-color holography. Details of experimentation with a sugar solution are also reported where better than 1/200 of a fringe order measurement capability was established. Rotating plate glass phase shifter was used for the experimentation. The report then describes the possible role of using more than two wavelengths with special reference-to-object beam intensity ratio needs in multicolor holography. Some specific two- and three-color cases are also described in detail. Then some new analysis methods of the reconstructed wavefront are considered. These are deflectometry, speckle metrology, confocal optical signal processing, and phase shifting technique related applications. Finally, design aspects of an experimental breadboard are presented.

Vikram, Chandra S.

1993-01-01

11

Complete oral rehabilitation with implants using CAD/CAM technology, stereolithography, and conoscopic holography.  

PubMed

A 64-year-old totally edentulous female initially presented with ill-fitting removable prostheses. A comprehensive treatment plan with dental implants was accepted by the patient. Clinical and laboratory procedures were executed using various computer technologies including computed tomography, rapid prototyping, and optical scanning using conoscopic holography. A review of the patient's treatment and various modalities used are the focus of this patient report. PMID:22223191

Bentz, Robert M; Balshi, Stephen F

2012-02-01

12

Progress in holography  

SciTech Connect

This book collects papers on optical technology, particularly holography. Topics include: objective lenses for compact disc players, photorefractive materials for holographic recording, holographic optical elements, characterization measurements of holographic mirrors, and computer-generated holograms.

Ebbeni, J.

1987-01-01

13

Complementary computer generated holography for aesthetic watermarking.  

PubMed

We present herein an original solution for the watermarking of holograms in binary graphic arts without unaesthetic diffractive effect. It is based on the Babinet principle of complementary diffractive structures adapted to Lohmann-type computer generated holograms. We introduce the concept and demonstrate its interest for anti-counterfeiting applications with the decoding of a hidden data matrix. A process of thermal lithography is used for the manufacturing of binary graphic arts containing complementary computer generated holograms. PMID:22418361

Martinez, Christophe; Lemonnier, Olivier; Laulagnet, Fabien; Fargeix, Alain; Tissot, Florent; Armand, Marie Françoise

2012-02-27

14

Computer Technology  

NSDL National Science Digital Library

Students will learn the history of computers as well as how computers work. COMPUTER TECHNOLOGY (9-12) - 52.0417 Computer Technology is an introduction to computer application software that includes word processing, spreadsheet, database, and telecommunications. An awareness of career opportunities, business ethics, and trends is included. Everything is done with computers. Your job will most likely have a computer to save files, write ...

Thackeray, Mrs.

2007-10-14

15

The application of digital image plane holography technology to identify Chinese herbal medicine  

NASA Astrophysics Data System (ADS)

In this paper, the imaging technology of digital image plane holography to identify the Chinese herbal medicine is studied. The optical experiment system of digital image plane holography which is the special case of pre-magnification digital holography was built. In the record system, one is an object light by using plane waves which illuminates the object, and the other one is recording hologram by using spherical light wave as reference light. There is a Micro objective lens behind the object. The second phase factor which caus ed by the Micro objective lens can be eliminated by choosing the proper position of the reference point source when digital image plane holography is recorded by spherical light. In this experiment, we use the Lygodium cells and Onion cells as the object. The experiment results with Lygodium cells and Onion cells show that digital image plane holography avoid the process of finding recording distance by using auto-focusing approach, and the phase information of the object can be reconstructed more accurately. The digital image plane holography is applied to the microscopic imaging of cells more effectively, and it is suit to apply for the identify of Chinese Herbal Medicine. And it promotes the application of digital holographic in practice.

Wang, Huaying; Guo, Zhongjia; Liao, Wei; Zhang, Zhihui

2012-03-01

16

The application of digital image plane holography technology to identify Chinese herbal medicine  

NASA Astrophysics Data System (ADS)

In this paper, the imaging technology of digital image plane holography to identify the Chinese herbal medicine is studied. The optical experiment system of digital image plane holography which is the special case of pre-magnification digital holography was built. In the record system, one is an object light by using plane waves which illuminates the object, and the other one is recording hologram by using spherical light wave as reference light. There is a Micro objective lens behind the object. The second phase factor which caus ed by the Micro objective lens can be eliminated by choosing the proper position of the reference point source when digital image plane holography is recorded by spherical light. In this experiment, we use the Lygodium cells and Onion cells as the object. The experiment results with Lygodium cells and Onion cells show that digital image plane holography avoid the process of finding recording distance by using auto-focusing approach, and the phase information of the object can be reconstructed more accurately. The digital image plane holography is applied to the microscopic imaging of cells more effectively, and it is suit to apply for the identify of Chinese Herbal Medicine. And it promotes the application of digital holographic in practice.

Wang, Huaying; Guo, Zhongjia; Liao, Wei; Zhang, Zhihui

2011-11-01

17

Video-rate computational heterodyne holography Antoine Dillee,1  

E-print Network

} calculate ~Ip from {In} calculate ~Iq from {In} hologram rendering? calculate Hp from ~Ip perform vibr-acquired holograms. The reported software can process 4 Megapixel 8-bit raw frames from a sensor array acquired with commodity computer graphics hardware. For time-averaged holograms acquired in off-axis optical configuration

Paris-Sud XI, Université de

18

Applications of digital holography to measurements and optical characterization  

NASA Astrophysics Data System (ADS)

With recent advances in high-speed computer and video capture technology, holographic films used in classical holography can be replaced with charged-coupled devices (CCD) and complementary metal-oxide-semiconductor (CMOS) image sensors to record and numerically reconstruct a hologram, which is now known as digital holography. Digital holography introduces something new to optical science. Wet chemical processing and other time-consuming procedures can be removed, so numerical recording and reconstruction can be realized in almost real time. It allows us to characterize the phase of a light field as well the intensity, and so the whole wave field can be measured and stored in a computer. Digital holography is expanding applications of holography and becoming a scientific and technological tool. Its use has now increased for measuring amplitude and the phase of object waves, displacement and three dimensional shape, particle distributions and motions, characterization of the refractive index and biological tissues, and vibration analysis, etc. Here, basic principles of digital holography for optical measurement and characterization are described. Taking into consideration the rapid advance in CCD and CMOS sensors as the background, the state-of-the-art applications of digital holography to optical measurement and characterization are presented.

Sang, Xinzhu; Yu, Chongxiu; Yu, Miao; Hsu, Dashsiung

2011-09-01

19

Silhouette method for hidden surface removal in computer holography and its acceleration using the switch-back technique.  

PubMed

A powerful technique is presented for occlusion processing in computer holography. The technique offers an improvement on the conventional silhouette method, which is a general wave optics-based occlusion processing method. The proposed technique dramatically reduces the computation time required for computer-generated holograms (CGH) of self-occluded objects. Performance measurements show that a full-parallax high-definition CGH composed of billions of pixels and a small CGH intended to be reconstructed in electro-holography can be computed in only 1.7 h and 4.5 s, respectively, without any hardware acceleration. Optical reconstruction of the high-definition CGH shows natural and continuous motion parallax in the self-occluded object. PMID:25322021

Matsushima, Kyoji; Nakamura, Masaki; Nakahara, Sumio

2014-10-01

20

COMPUTER SCIENCE INFORMATION TECHNOLOGY  

E-print Network

COMPUTER SCIENCE and INFORMATION TECHNOLOGY POSTGRADUATE STUDIES 2006 School of Mathematics, Statistics and Computer Science The University of New England Armidale, NSW, Australia Printed courses in computer science and the graduate level topics in computer science which are offered

Dunstan, Neil

21

The fast scheme for mixed-3D scenes by polygon-based computer-generated holography (CGH)  

NASA Astrophysics Data System (ADS)

We proposed a fast scheme for computer-generated holography (CGH) to mix 3D scenes. The objects in the proposed include the real and virtual objects. Make a point cloud model of real object, and then converted to a triangular mesh model. And mix the triangular mesh model with virtual 3D object mesh models. Using the angular spectrum method to generated hologram, and it is convenient to accelerating with GPU.

Piao, Yan-Ling; Le, Thanh B.; Li, Weina; Jeong, Jong-Rea; Kim, Nam

2014-02-01

22

Collinear holography  

NASA Astrophysics Data System (ADS)

A novel reading and writing technology for a holographic storage system called collinear holography is developed. With this method, two-dimensional page data can be recorded as volumetric holograms generated by a reference beam and a signal beam that are bundled on the same axis and irradiated on the recording medium through a single objective lens. The multiplex recording and reconstructing process is demonstrated, and it is presented that optical configuration and the dichroic media disk structure are suitable for a compact system. This method enables us to construct a small volumetric optical disk storage system with CD and DVD upper compatibility.

Horimai, Hideyoshi; Tan, Xiaodi; Li, Jun

2005-05-01

23

Ilford Holography - 1986 Progress Report  

NASA Astrophysics Data System (ADS)

1986 was an extremely important and successful year for holography within Ilford Limited and for the development of silver halide holography as a whole. It is thus timely to summarise some of the major achievements of that year in respect of the progress made both in marketing and technological terms. In many respects the lessons learned by Ilford in its efforts to widen the markets for silver halide based holography are cf interest to smaller companies whose endeavours follow along similar lines.

Wood, Glenn P.

1987-06-01

24

Holography in the Junior High.  

ERIC Educational Resources Information Center

Examines the use of holography in the art technology program of a junior high school. Characterizing holography as a valuable artistic experience and discovery experience and stressing the importance of student interest and involvement, the author discusses the necessary equipment for the project and includes two diagrams of a holographic setup.…

Tomaszkiewicz, Frank

1988-01-01

25

Mechanical Computation: its Computational Complexity and Technologies  

E-print Network

Mechanical Computation: its Computational Complexity and Technologies Chapter, Encyclopedia Importance II. Introduction to Computational Complexity III. Computational Complexity of Mechanical Devices and their Movement Problems IV. Concrete Mechanical Computing Devices V. Future Directions VI. Bibliography Glossary

Reif, John H.

26

Digital Technology Group Computer Laboratory  

E-print Network

Digital Technology Group 1/20 Computer Laboratory Digital Technology Group Computer Laboratory William R Carson Building on the presentation by Francisco Monteiro Matlab #12;Digital Technology Group 2/20 Computer Laboratory Digital Technology Group Computer Laboratory The product: MATLAB® - The Language

Cambridge, University of

27

Procedia Information Technology & Computer  

E-print Network

referred to as SLAM or Simultaneous Localization and Mapping [1] [2] [3], and is considered of motions used by the robot to map the environment. Keywords: SLAM, topological word, explorationProcedia Information Technology & Computer Science 00 (2013) 000-000 3rd World Conference

Jenkin, Michael R. M.

28

Visualization of x-ray computer tomography using computer-generated holography  

NASA Astrophysics Data System (ADS)

The theory converted from x-ray projection data to the hologram directly by combining the computer tomography (CT) with the computer generated hologram (CGH), is proposed. The purpose of this study is to offer the theory for realizing the all- electronic and high-speed seeing through 3D visualization system, which is for the application to medical diagnosis and non- destructive testing. First, the CT is expressed using the pseudo- inverse matrix which is obtained by the singular value decomposition. CGH is expressed in the matrix style. Next, `projection to hologram conversion' (PTHC) matrix is calculated by the multiplication of phase matrix of CGH with pseudo-inverse matrix of the CT. Finally, the projection vector is converted to the hologram vector directly, by multiplication of the PTHC matrix with the projection vector. Incorporating holographic analog computation into CT reconstruction, it becomes possible that the calculation amount is drastically reduced. We demonstrate the CT cross section which is reconstituted by He-Ne laser in the 3D space from the real x-ray projection data acquired by x-ray television equipment, using our direct conversion technique.

Daibo, Masahiro; Tayama, Norio

1998-09-01

29

Efficient image processing in Fourier holography for moving images  

Microsoft Academic Search

For still images, diffraction-based beam-forming of laser light is a well-known task in optics called Fourier holography. Using a phase-only diffractive optical element (DOE) which displays a computer-generated hologram (CGH) very efficient beam forming is realized. The drawbacks of this technique are massive computation costs for phase-only holograms. In this paper, we briefly describe this diffraction-based technology. Then, we depict

Marc Bernau

2009-01-01

30

Computer Technology in Adult Education.  

ERIC Educational Resources Information Center

This publication provides materials to help adult educators use computer technology in their teaching. Section 1, Computer Basics, contains activities and materials on these topics: increasing computer literacy, computer glossary, parts of a computer, keyboard, disk care, highlighting text, scrolling and wrap-around text, setting up text,…

Slider, Patty; Hodges, Kathy; Carter, Cea; White, Barbara

31

Internet Archive: Computers & Technology  

NSDL National Science Digital Library

The Internet Archive has gathered up this excellent audio collection featuring interviews, discussions, and musings about computers, technology, and science. All told, there are over 700 audio files here, including the popular Groks Science Radio Show and Podcast and Textfiles BBS Audio. This last collection contains a varied set of audio files assembled by Jason Scott, curator of textfiles.com. Here, visitors can learn about the days of ASCII and Dial-up Bulletin Board Systems (BBS) that were popular from the 1970s to the early 1990s. To get started, first-time visitors can look over the Most Downloaded Items for a few suggestions, or simply find out more via the About the Archive area.

32

Computer Technology Institute & Press "DIOPHANTUS"  

E-print Network

and femtocell technology. Next Generation Networks: RU6 research in this area deals with the latest. . . . . . . . . Computer Technology Institute & Press "DIOPHANTUS" Research Unit 6 http://ru6.cti.gr Networks, Telematics and New Services 2014 #12;Computer Technology Institute & Press "Diophantus

Bouras, Christos

33

Dental Holography  

NASA Astrophysics Data System (ADS)

Ten years have passed since the first articles appeared in this new field. The qualities of the laser light together with the need of contactless 3-D measurements for different dental purposes seemed to be extremely promising, but still just a few scientists have used the method and mostly for laboratory studies. For some reason there has been a preponderance for orthodontic measurements. This seems to be a bit peculiar from holographic view compared with measurements for engineering purposes, which usually are made on metals. So naturally holography can become a clinical tool for measurements in the field of fixed bridges, removable partial dentures and implants. One of the problems is that the need for holography in dental research must be fulfilled in collaboration with physicists. Only a two-way communication during an entire experiment can balance both technical and odontological demands and thus give practical and clinical important results. The need for an easy way of handling the evaluation to get all required information is another problem and of course the holographic equipment must be converted to a box easy to handle for everyone. At last the position of dental holography today is going to be carefully examined together with an attempt to look into the hopefully exciting and not to utopic future for this research field.

Dirtoft, Ingegerd

1983-12-01

34

Photoelectron Holography  

NASA Astrophysics Data System (ADS)

New techniques using High Harmonic Generation (HHG) or attosecond pulses have proven to be successful in following the ultrafast motion of electrons and holes inside a molecule [1, 2]. We introduce a complementary technique; photoelectron holography [3]. This uses the phase and amplitude of the rescattered electrons to encode the structure and dynamics of the studied atom or molecule. Since photoelectron holography benefits from longer wavelengths, i.e. small photon energies, it is very suitable for systems with a small ionization potential. To demonstrate photoelectron holography, both measurements and calculations on atomic Xenon will be shown. Metastable Xenon was ionized with 7?m light from the FELICE-free electron laser [4]. The three dimensional momentum distribution of the photoelectrons was recorded by a Velocity Map Imaging (VMI)-spectrometer. In these momentum maps interference structures are observed that can be identified as an interference of direct and scattered electrons; a hologram of Xenon. Semi-classical calculations have demonstrated that in the hologram dynamical information of the electron and the atom is stored with a femtosecond to attosecond time resolution.[4pt] [1] O. Smirnova et al. Nature 460 972 (2009)[0pt] [2] G. Sansone et al. Nature 465 763 (2010)[0pt] [3] Y. Huismans et al. Science 331 61 (2011)[0pt] [4] J. M. Bakker et al., J. Chem. Phys. 132 074305 (2010)

Huismans, Ymkje

2011-06-01

35

Computer technology and counseling  

Microsoft Academic Search

Technological advances and emphasis on time-limited, inexpensive treatment has ushered in counseling through the use of communication via internet. The utilization of technology for health care purposes has increased in popularity and usage in clinical practice. Distance counseling or e-counseling is a method of service delivery with potential to supplement traditional face to face counseling. The challenges of using this

Zainah Ahmad Zamani

2009-01-01

36

Effects of Computer Technology  

ERIC Educational Resources Information Center

The expanding networks of computer hardware, software, and organizations for controlling them and the institutional data bases they access are described. Improvements are making the data sources accessible but raise some new problems for data managers and institutional researchers. (Author/LBH)

Heydinger, Richard B.; Norris, Donald M.

1976-01-01

37

Computer Technology for Industry  

NASA Technical Reports Server (NTRS)

Shell Oil Company used a COSMIC program, called VISCEL to insure the accuracy of the company's new computer code for analyzing polymers, and chemical compounds. Shell reported that there were no other programs available that could provide the necessary calculations. Shell produces chemicals for plastic products used in the manufacture of automobiles, housewares, appliances, film, textiles, electronic equipment and furniture.

1982-01-01

38

Femtosecond light-in-flight holography  

NASA Astrophysics Data System (ADS)

A holographic technique ('light-in-flight' (LIF) holography) is described, which combines classic off-axis holography with the latest ultrashort-pulse laser technology to produce three-dimensional images with femtosecond temporal resolution. The LIF holography can be used to study the distortions of pulses moving through optical fibers (Abramson, 1987), visualize relativistic effects (Abramson, 1985), measure the shape and deformation of fast moving objects, and make observations through nonrigid scattering media (Spears et al., 1989). The technique can also be applied in ultrafast optical science, metrology, and medical imaging.

Valdmanis, J. A.; Rudd, J. V.; Chen, H.; Chen, Y.; Leith, E.; Abramson, Nils H.

1992-01-01

39

Children and Computers: New Technology--  

E-print Network

31 Children and Computers: New Technology-- Old Concerns Ellen A.Wartella Nancy Jennings Abstract concerns about the effect on children's development and well- being. Although we tend to see these issues. With the introduction of each of these technologies, proponents touted the educational benefits for children, while

Cassell, Justine

40

Emerging holography  

SciTech Connect

We rederive AdS/CFT predictions for infrared two-point functions by an entirely four-dimensional approach, without reference to holography. This approach, originally due to Migdal in the context of QCD, utilizes an extrapolation from the ultraviolet to the infrared using a Pade approximation of the two-point function. We show that the Pade approximation and AdS/CFT give the same leading order predictions, and we discuss including power corrections such as those due to condensates of gluons and quarks in QCD. At finite order the Pade approximation provides a gauge invariant regularization of a higher dimensional gauge theory in the spirit of deconstructed extra dimensions. The radial direction of anti-de Sitter space emerges naturally in this approach.

Erlich, Joshua [Department of Physics, College of William and Mary, Williamsburg, Virginia 23187 (United States); Kribs, Graham D. [Department of Physics and Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403 (United States); Low, Ian [School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)

2006-05-01

41

Trusted Computing Technologies, Intel Trusted Execution Technology.  

SciTech Connect

We describe the current state-of-the-art in Trusted Computing Technologies - focusing mainly on Intel's Trusted Execution Technology (TXT). This document is based on existing documentation and tests of two existing TXT-based systems: Intel's Trusted Boot and Invisible Things Lab's Qubes OS. We describe what features are lacking in current implementations, describe what a mature system could provide, and present a list of developments to watch. Critical systems perform operation-critical computations on high importance data. In such systems, the inputs, computation steps, and outputs may be highly sensitive. Sensitive components must be protected from both unauthorized release, and unauthorized alteration: Unauthorized users should not access the sensitive input and sensitive output data, nor be able to alter them; the computation contains intermediate data with the same requirements, and executes algorithms that the unauthorized should not be able to know or alter. Due to various system requirements, such critical systems are frequently built from commercial hardware, employ commercial software, and require network access. These hardware, software, and network system components increase the risk that sensitive input data, computation, and output data may be compromised.

Guise, Max Joseph; Wendt, Jeremy Daniel

2011-01-01

42

Virtual integral holography  

NASA Astrophysics Data System (ADS)

A range of stereoscopic display technologies exist which are no more intrusive, to the user, than a pair of spectacles. Combining such a display system with sensors for the position and orientation of the user's point-of-view results in a greatly enhanced depiction of three-dimensional data. As the point of view changes, the stereo display channels are updated in real time. The face of a monitor or display screen becomes a window on a three-dimensional scene. Motion parallax naturally conveys the placement and relative depth of objects in the field of view. Most of the advantages of "head-mounted display" technology are achieved with a less cumbersome system. To derive the full benefits of stereo combined with motion parallax, both stereo channels must be updated in real time. This may limit the size and complexity of data bases which can be viewed on processors of modest resources, and restrict the use of additional three-dimensional cues, such as texture mapping, depth cueing, and hidden surface elimination. Effective use of "full 3D" may still be undertaken in a non-interactive mode. Integral composite holograms have often been advanced as a powerful 3D visualization tool. Such a hologram is typically produced from a film recording of an object on a turntable, or a computer animation of an object rotating about one axis. The individual frames of film are multiplexed, in a composite hologram, in such a way as to be indexed by viewing angle. The composite may be produced as a cylinder transparency, which provides a stereo view of the object as if enclosed within the cylinder, which can be viewed from any angle. No vertical parallax is usually provided (this would require increasing the dimensionality of the multiplexing scheme), but the three dimensional image is highly resolved and easy to view and interpret. Even a modest processor can duplicate the effect of such a precomputed display, provided sufficient memory and bus bandwidth. This paper describes the components of a stereo display system with user point-of-view tracking for interactive 3D, and a digital realization of integral composite display which we term virtual integral holography. The primary drawbacks of holographic display - film processing turnaround time, and the difficulties of displaying scenes in full color -are obviated, and motion parallax cues provide easy 3D interpretation even for users who cannot see in stereo.

Venolia, Dan S.; Williams, Lance

1990-08-01

43

Captology: Computers as Persuasive Technologies  

NSDL National Science Digital Library

"The Stanford Persuasive Technology Lab creates insight into how computing products -- from websites to mobile phone software -- can be designed to change what people believe and what they do." This unusual field of study is called captology, and the subject is explored in detail on the lab's homepage. The Key Concepts section provides a brief overview of captology and links to another page with nine topic papers published by researchers at the lab. In a series of examples demonstrating how computers can be used to influence a person, the site's creators separate instances into macrosuasion and microsuasion. Specific websites and computer programs are highlighted to reveal these interesting marketing or motivational tactics.

44

Optical Computers and Space Technology  

NASA Technical Reports Server (NTRS)

The rapidly increasing demand for greater speed and efficiency on the information superhighway requires significant improvements over conventional electronic logic circuits. Optical interconnections and optical integrated circuits are strong candidates to provide the way out of the extreme limitations imposed on the growth of speed and complexity of nowadays computations by the conventional electronic logic circuits. The new optical technology has increased the demand for high quality optical materials. NASA's recent involvement in processing optical materials in space has demonstrated that a new and unique class of high quality optical materials are processible in a microgravity environment. Microgravity processing can induce improved orders in these materials and could have a significant impact on the development of optical computers. We will discuss NASA's role in processing these materials and report on some of the associated nonlinear optical properties which are quite useful for optical computers technology.

Abdeldayem, Hossin A.; Frazier, Donald O.; Penn, Benjamin; Paley, Mark S.; Witherow, William K.; Banks, Curtis; Hicks, Rosilen; Shields, Angela

1995-01-01

45

Infinite possibilities: Computational structures technology  

NASA Technical Reports Server (NTRS)

Computational Fluid Dynamics (or CFD) methods are very familiar to the research community. Even the general public has had some exposure to CFD images, primarily through the news media. However, very little attention has been paid to CST--Computational Structures Technology. Yet, no important design can be completed without it. During the first half of this century, researchers only dreamed of designing and building structures on a computer. Today their dreams have become practical realities as computational methods are used in all phases of design, fabrication and testing of engineering systems. Increasingly complex structures can now be built in even shorter periods of time. Over the past four decades, computer technology has been developing, and early finite element methods have grown from small in-house programs to numerous commercial software programs. When coupled with advanced computing systems, they help engineers make dramatic leaps in designing and testing concepts. The goals of CST include: predicting how a structure will behave under actual operating conditions; designing and complementing other experiments conducted on a structure; investigating microstructural damage or chaotic, unpredictable behavior; helping material developers in improving material systems; and being a useful tool in design systems optimization and sensitivity techniques. Applying CST to a structure problem requires five steps: (1) observe the specific problem; (2) develop a computational model for numerical simulation; (3) develop and assemble software and hardware for running the codes; (4) post-process and interpret the results; and (5) use the model to analyze and design the actual structure. Researchers in both industry and academia continue to make significant contributions to advance this technology with improvements in software, collaborative computing environments and supercomputing systems. As these environments and systems evolve, computational structures technology will evolve. By using CST in the design and operation of future structures systems, engineers will have a better understanding of how a system responds and lasts, more cost-effective methods of designing and testing models, and improved productivity. For informational and educational purposes, a videotape is being produced using both static and dynamic images from research institutions, software and hardware companies, private individuals, and historical photographs and drawings. The extensive number of CST resources indicates its widespread use. Applications run the gamut from simpler university-simulated problems to those requiring solutions on supercomputers. In some cases, an image or an animation will be mapped onto the actual structure to show the relevance of the computer model to the structure. Transferring the digital files to videotape presents a number of problems related to maintaining the quality of the original image, while still producing a broadcast quality videotape. Since researchers normally do not create a computer image using traditional composition theories or video production requirements, often the image loses some of its original digital quality and impact when transferred to videotape. Although many CST images are currently available, those that are edited into the final project must meet two important criteria: they must complement the narration, and they must be broadcast quality when recorded on videotape.

Beam, Sherilee F.

1994-01-01

46

Recent developments on holography in China  

NASA Astrophysics Data System (ADS)

Since the 1985 Lake Forest International Conference on display holography, USA) more developments have been made on holographic applications in China among which the important events and progress were: the International Conference on holography applications em bossing holography new holographic optical elements and equipments etc. . 1. INTERNATIONAL CONFEPENCE ON GRAPHY APPLICATIONS'' ( I CHA ''86. BEIJING) More than 280 holographers from 18 countries gathered in the Science Hall in Beijing from July 2 to for the International Conference on holography applications''86. The conference was sponsor ed by the Chinese OPtical Society the Chinese Theoretical Applied Mechanics Society and cosponsored by the Society of Photooptical Instrumentation Engineers the European Photonic Association in cooperation with the China Association for Science And Technology. It was chaired by Prof. Wang Daheng vice president of the China Association for Science Technology and president of the Chinese Optical Society cochaired by DP. H. J. Caulfield of the Univ. of Alabama Dr. G. von Bally of the Munster Univ. in West Germany and Dr. J. Tsujiuchi of the Tokyo Institute of Technology. SPIE Vol. 1238 Three-Dimensional Holography: Science Culture Education (1989) / 13

Hsu, Dahsiung; Jiao, Jiangzhong; Tao, Huiying; Long, Pin

1991-02-01

47

Gordon Research Conference on Holography and Optical Information Processing  

NASA Astrophysics Data System (ADS)

The 1991 Gordon Research Conference on Holography and Optical Information Processing was held on 17-21 June, 1991 at Plymouth State College in Plymouth, NH. The talks on Ultrafast Optical Logic Using Solitons and Optical Processing with Planar Optics pointed out the significant progress being made by various Bell Labs investigators on various aspects of optical computing. Professor Sing Lee from the University of California-San Diego gave an excellent overview of some engineering and performance Issues in optoelectronic computing. It is clear that the Soviets have made considerable progress on multi transducer acousto-optic spectrum analyzers. It is also clear that the Japanese government is planning to continue to make optical computing one of its high priority areas, with its NIPT (New Information Processing Technology project), and are projected to continue to investigate so called sixth generation computer technologies.

Walkup, John F.

1991-09-01

48

Electroholographic display unit for three-dimensional display by use of special-purpose computational chip for holography and reflective LCD panel.  

PubMed

We developed an electroholography unit, which consists of a special-purpose computational chip for holography and a reflective liquid-crystal display (LCD) panel, for a three-dimensional (3D) display. The special-purpose chip can compute a computer-generated hologram of 800x600 grids in size from a 3D object consisting of approximately 400 points in approximately 0.15 seconds. The pixel pitch and resolution of the LCD panel are 12 mum and 800x600 grids, respectively. We implemented the special purpose chip and LCD panel on a printed circuit board of approximately 28cmx13cm in size. After the calculation, the computer-generated hologram produced by the special-purpose chip is displayed on the LCD panel. When we illuminate a reference light to the LCD panel, we can observe a 3D animation of approximately 3cmx3cmx3cm in size. In the present paper, we report the electroholographic display unit together with a simple 3D display system. PMID:19495333

Shimobaba, Tomoyoshi; Shiraki, Atsushi; Masuda, Nobuyuki; Ito, Tomoyoshi

2005-05-30

49

Computer technology in institutional foodservice.  

PubMed

A survey research study profiled foodservices and foodservice managers in health care and educational institutions that applied computer technology to their operations. The survey also examined the extent to which computers were applied to management and client service functions. Both the size and the type of institution were found to be significantly related to computer usage. The larger the institution, the greater the extent of indicated usage. Educational institutions used computers more than all types of health care institutions. Mainframe systems (time shared internally or externally) were the predominant computers used. Internal mainframe systems and minicomputers were used significantly more by educational institutions than by health care institutions. The manager most likely to use computers was a man of any age with at least a bachelor's degree who was employed full-time within the institution. He had taken at least six business management courses and had at least some understanding of and ability to apply systems management concepts to his daily management practices. Applications were categorized into five functional areas: menu, purchasing/storage, production, client service, and managerial information. Managerial information applications were most frequently reported by all respondents, with large institutions and elementary/secondary schools reporting the greatest usage for those applications. Several purchase/storage and production applications were significantly related to type or to size or to both, with large institutions and college/university foodservices reporting the greatest usage. Menu precosting was the only significant menu function, and that was significant only relative to institutional type. No client service functions were significantly related to either type or size. PMID:3941228

McCool, A C; Garand, M M

1986-01-01

50

Computer technologies and institutional memory  

NASA Technical Reports Server (NTRS)

NASA programs for manned space flight are in their 27th year. Scientists and engineers who worked continuously on the development of aerospace technology during that period are approaching retirement. The resulting loss to the organization will be considerable. Although this problem is general to the NASA community, the problem was explored in terms of the institutional memory and technical expertise of a single individual in the Man-Systems division. The main domain of the expert was spacecraft lighting, which became the subject area for analysis in these studies. The report starts with an analysis of the cumulative expertise and institutional memory of technical employees of organizations such as NASA. A set of solutions to this problem are examined and found inadequate. Two solutions were investigated at length: hypertext and expert systems. Illustrative examples were provided of hypertext and expert system representation of spacecraft lighting. These computer technologies can be used to ameliorate the problem of the loss of invaluable personnel.

Bell, Christopher; Lachman, Roy

1989-01-01

51

Military engine computational structures technology  

NASA Technical Reports Server (NTRS)

Integrated High Performance Turbine Engine Technology Initiative (IHPTET) goals require a strong analytical base. Effective analysis of composite materials is critical to life analysis and structural optimization. Accurate life prediction for all material systems is critical. User friendly systems are also desirable. Post processing of results is very important. The IHPTET goal is to double turbine engine propulsion capability by the year 2003. Fifty percent of the goal will come from advanced materials and structures, the other 50 percent will come from increasing performance. Computer programs are listed.

Thomson, Daniel E.

1992-01-01

52

Holography in Japan  

Microsoft Academic Search

The present state of activities of holography in Japan is reviewed. Electro-holography, holographic 3D printer, recording material have been studying in research organizations, universities, and research institutes. Optical head using hologram has been developed by main electric companies. The market of hologram in security is going to extend. Several private and group exhibitions were opened within a year. HODIC meeting

Toshihiro Kubota

1998-01-01

53

GPU-based calculations in digital holography  

NASA Astrophysics Data System (ADS)

In this work we are going to apply GPU (Graphical Processing Units) with CUDA environment for scientific calculations, concretely high cost computations on the field of digital holography. For this, we have studied three typical problems in digital holography such as Fourier transforms, Fresnel reconstruction of the hologram and the calculation of vectorial diffraction integral. In all cases the runtime at different image size and the corresponding accuracy were compared to the obtained by traditional calculation systems. The programs have been carried out on a computer with a graphic card of last generation, Nvidia GTX 680, which is optimized for integer calculations. As a result a large reduction of runtime has been obtained which allows a significant improvement. Concretely, 15 fold shorter times for Fresnel approximation calculations and 600 times for the vectorial diffraction integral. These initial results, open the possibility for applying such kind of calculations in real time digital holography.

Madrigal, R.; Acebal, P.; Blaya, S.; Carretero, L.; Fimia, A.; Serrano, F.

2013-05-01

54

Particle and flow field holography  

NASA Astrophysics Data System (ADS)

The current status of particle field and flow field holography is examined, and the methods based on the principles of either class of imagery are described. Special consideration is given to the automated data reduction technology. Current applications of flow diagnostics, which can provide thousands of holograms during a one-day experiment, include NASA applications in wind tunnel holography, in a Laser Doppler Velocimeter, in holographic movies, and in an optical device for recording crystal growth at zero gravity, to be used in the Space Lab 3 shuttle mission scheduled for May 1985. Military applications of the flow diagnostics include the use of holographic tomography for visualizing flow fields around airborne structures, in wind tunnels, and in the analyses of rocket exhausts and gun ranges. The information provided by the particle sizing holography, concerning the size, shape, number, and velocity of particles and the records of the particle break-up phenomenon, can be used in various military field oriented and airborne applications and in meteorology and environment protection science.

Trolinger, J. D.

1985-01-01

55

Center for Computational Structures Technology  

NASA Technical Reports Server (NTRS)

The Center for Computational Structures Technology (CST) is intended to serve as a focal point for the diverse CST research activities. The CST activities include the use of numerical simulation and artificial intelligence methods in modeling, analysis, sensitivity studies, and optimization of flight-vehicle structures. The Center is located at NASA Langley and is an integral part of the School of Engineering and Applied Science of the University of Virginia. The key elements of the Center are: (1) conducting innovative research on advanced topics of CST; (2) acting as pathfinder by demonstrating to the research community what can be done (high-potential, high-risk research); (3) strong collaboration with NASA scientists and researchers from universities and other government laboratories; and (4) rapid dissemination of CST to industry, through integration of industrial personnel into the ongoing research efforts.

Noor, Ahmed K.; Perry, Ferman W.

1995-01-01

56

Art and Technology: Computers in the Studio?  

ERIC Educational Resources Information Center

Because the graphic industry demands graduates with computer skills, art students want college programs that include complex computer technologies. However, students can produce good computer art only if they have mastered traditional drawing and design skills. Discusses designing an art curriculum including both technology and traditional course…

Ruby-Baird, Janet

1997-01-01

57

Computer Technology: State of the Art.  

ERIC Educational Resources Information Center

Describes the nature of modern general-purpose computer systems, including hardware, semiconductor electronics, microprocessors, computer architecture, input output technology, and system control programs. Seven suggested readings are cited. (FM)

Withington, Frederic G.

1981-01-01

58

GEORGIA INSTITUTE OF TECHNOLOGY College of Computing  

E-print Network

Rev. 08/09 GEORGIA INSTITUTE OF TECHNOLOGY College of Computing Computational Science ______________________________________________ Date _________________________________ List Course Number, Course Title, and Credit Hours by ascending ________________________________________________________________________________________ ___________________________________________________________________________________________________________ Projected Date of Graduation ________________________ _____________________________________________ Student

Gray, Alexander

59

Disruptive technology business models in cloud computing  

E-print Network

Cloud computing, a term whose origins have been in existence for more than a decade, has come into fruition due to technological capabilities and marketplace demands. Cloud computing can be defined as a scalable and flexible ...

Krikos, Alexis Christopher

2010-01-01

60

Persuasion Strategies for Computers as Persuasive Technologies  

Microsoft Academic Search

Similar to human persuaders in our society, persuasive computing technologies can influence people's attitudes and bring some constructive changes in many domains such as marketing, health, safety, environment and so on. Since the study of computers as persuasive technologies was introduced at CHI 97 as a new research area, more valuable studies have been done in this relatively unexplored area.

Ran Cheng

61

Computer Crime: A Technology Gap  

Microsoft Academic Search

A review of current industrial practices, litigation trends, and the growing use of computer data banks and networks leads to the following conclusions about computer crime: data security and integrity are frequently compromised by lax security practices and operating procedures. Frequently the perceived but erroneous assumption that the inherent difficulty of the computer operating system will detour would-be violators is

JAMES A. FAGIN

1991-01-01

62

An Introduction to Educational Holography.  

ERIC Educational Resources Information Center

Holograms are capable of taking the two-dimensional ways of envisioning information to another dimension of presentation, representation, and conceptualization. Educational holography is joining display holography, holographic testing of materials, and holographic optical elements as a fourth major field in holography. Holograms are explored as…

Lloyd, R. Scott

63

Center for Computer Sciences and Technology.  

ERIC Educational Resources Information Center

Functions of the Center for Computer Sciences and Technology (CCST), a national center for computer research and development for the United States government, are described. CCST provides computer and related services to the National Bureau of Standards of which it is a part and to other government agencies on a cost-reimbursable basis. The Office…

National Bureau of Standards (DOC), Washington, DC.

64

Applications of Computer Technology in Intercollegiate Debate.  

ERIC Educational Resources Information Center

Focusing on how computers can and should be used in intercollegiate forensics, this journal issue offers the perspectives of a number of forensics instructors. The lead article, "Applications of Computer Technology in Intercollegiate Debate" by Theodore F. Sheckels, Jr., discusses five areas in which forensics educators might use computer

Kay, Jack, Ed.

1986-01-01

65

Adaptive Computing Technology and the Disabled.  

ERIC Educational Resources Information Center

Adaptive technology offers people with disabilities the opportunity not just to use computers, but to use computers to complete tasks that were previously not possible for them. Computers can be used to assist individuals with speech or writing impairments, physical or mobility impairments, visual impairments, and learning disabilities. (Author/JL)

Harrell, William L.

1998-01-01

66

Computer Technology Resources for Literacy Projects.  

ERIC Educational Resources Information Center

This resource booklet was prepared to assist literacy projects and community adult education programs in determining the technology they need to serve more older persons. Section 1 contains the following reprinted articles: "The Human Touch in the Computer Age: Seniors Learn Computer Skills from Schoolkids" (Suzanne Kashuba); "Computer Instruction…

Florida State Council on Aging, Tallahassee.

67

Campus Computer Store Information Technology Services  

E-print Network

Campus Computer Store Information Technology Services 20 Place Riel, 1 Campus Drive 966-8375 ccs Computer Store is administering a license for SAS. It is licensed on a yearly pro-rated basis as outlined: _____________________________________________________ Student Number (if applicable): _______________________________________________ Location of Computer

Saskatchewan, University of

68

From Computer Lab to Technology Class.  

ERIC Educational Resources Information Center

Discussion of integrating technology into elementary school classrooms focuses on teacher training that is based on a three-year plan developed at an elementary school in Marathon, New York. Describes the role of a technology teacher who facilitates technology integration by running the computer lab, offering workshops, and developing inservice…

Sherwood, Sandra

1999-01-01

69

OFFICE OF INFORMATION TECHNOLOGY COMPUTER SECURITY POLICY  

E-print Network

PROVOST FOR INFORMATION TECHNOLOGY ApPROVED BY: ~ Date ~ts-tl2- Date li/rO/I?... I I Date REVISION DATEOFFICE OF INFORMATION TECHNOLOGY COMPUTER SECURITY POLICY RESPONsmLE ADMINISTRATOR: RESPONsmLE OFFICE(S): ORIGINALLY ISSUED: ApPROVALS: VICE PROVOST FOR INFORMATION TECHNOLOGY OFFICE OF THE VICE

Hemmers, Oliver

70

Education & Technology: Reflections on Computing in Classrooms.  

ERIC Educational Resources Information Center

This volume examines learning in the age of technology, describes changing practices in technology-rich classrooms, and proposes new ways to support teachers as they incorporate technology into their work. It commemorates the eleventh anniversary of the Apple Classrooms of Tomorrow (ACOT) Project, when Apple Computer, Inc., in partnership with a…

Fisher, Charles, Ed.; Dwyer, David C., Ed.; Yocam, Keith, Ed.

71

Tsunami Technologies: Online Cluster Computing  

NSDL National Science Digital Library

TTI provides a unique cluster computing service accessible online from anywhere. TTI is committed to providing up-to-date, industry recognized, high performance computing (HPC) systems and services to companies and academia with the absolute best in customer service and support. And, because it is affordable, our services are even within reach of the individual scientist.

72

Beyond Computation: Information Technology, Organizational  

E-print Network

Erik Brynjolfsson and Lorin M. Hitt H ow do computers contribute to business performance and economic, to name a few. This is fortunate because most problems are not numerical problems. Ballistics, code. Journal of Economic Perspectives--Volume 14, Number 4--Fall 2000--Pages 23­48 #12;thinking. As computers

73

Computing, Information and Communications Technology (CICT) Website  

NASA Technical Reports Server (NTRS)

The Computing, Information and Communications Technology Program (CICT) was established in 2001 to ensure NASA's Continuing leadership in emerging technologies. It is a coordinated, Agency-wide effort to develop and deploy key enabling technologies for a broad range of mission-critical tasks. The NASA CICT program is designed to address Agency-specific computing, information, and communications technology requirements beyond the projected capabilities of commercially available solutions. The areas of technical focus have been chosen for their impact on NASA's missions, their national importance, and the technical challenge they provide to the Program. In order to meet its objectives, the CICT Program is organized into the following four technology focused projects: 1) Computing, Networking and Information Systems (CNIS); 2) Intelligent Systems (IS); 3) Space Communications (SC); 4) Information Technology Strategic Research (ITSR).

Hardman, John; Tu, Eugene (Technical Monitor)

2002-01-01

74

Advances and trends in computational structures technology  

NASA Technical Reports Server (NTRS)

The major goals of computational structures technology (CST) are outlined, and recent advances in CST are examined. These include computational material modeling, stochastic-based modeling, computational methods for articulated structural dynamics, strategies and numerical algorithms for new computing systems, multidisciplinary analysis and optimization. The role of CST in the future development of structures technology and the multidisciplinary design of future flight vehicles is addressed, and the future directions of CST research in the prediction of failures of structural components, the solution of large-scale structural problems, and quality assessment and control of numerical simulations are discussed.

Noor, A. K.; Venneri, S. L.

1990-01-01

75

Centre for Quantum Computation & Communication Technology  

NSDL National Science Digital Library

This is the homepage of "an Australian multi-university collaboration undertaking research on the fundamental physics and technology of building, at the atomic level, a solid state quantum computer in silicon together with other high potential implementations." Although attempts to develop a quantum computer have met with limited success, the centre has substantial resources invested in advancing toward practical uses of quantum computing technology. The site provides a very good introduction to the principles and implications of quantum computing, as well as details about various research projects underway at the Australian universities. Links to conference and journal papers produced by members of the centre, many from 2003, are also provided.

76

Faculty of Computer Science & Technology  

E-print Network

on Advanced Learning Technologies, for `Modelling Affect in Learning - Motivation and Methods'; Sherif Akoush. There was an increase in demand from companies to come to Cambridge to provide students with interview clinics

Haddadi, Hamed

77

Absorbing New Subjects: Holography as an Analog of Photography  

NASA Astrophysics Data System (ADS)

I discuss the early history of holography and explore how perceptions, applications, and forecasts of the subject were shaped by prior experience. I focus on the work of Dennis Gabor (1900 1979) in England,Yury N. Denisyuk (b. 1924) in the Soviet Union, and Emmett N. Leith (1927 2005) and Juris Upatnieks (b. 1936) in the United States. I show that the evolution of holography was simultaneously promoted and constrained by its identification as an analog of photography, an association that influenced its assessment by successive audiences of practitioners, entrepreneurs, and consumers. One consequence is that holography can be seen as an example of a modern technical subject that has been shaped by cultural influences more powerfully than generally appreciated. Conversely, the understanding of this new science and technology in terms of an older one helps to explain why the cultural effects of holography have been more muted than anticipated by forecasters between the 1960s and 1990s.

Johnston, Sean F.

2006-05-01

78

(CICT) Computing, Information, and Communications Technology Overview  

NASA Technical Reports Server (NTRS)

The goal of the Computing, Information, and Communications Technology (CICT) program is to enable NASA's Scientific Research, Space Exploration, and Aerospace Technology Missions with greater mission assurance, for less cost, with increased science return through the development and use of advanced computing, information and communications technologies. This viewgraph presentation includes diagrams of how the political guidance behind CICT is structured. The presentation profiles each part of the NASA Mission in detail, and relates the Mission to the activities of CICT. CICT's Integrated Capability Goal is illustrated, and hypothetical missions which could be enabled by CICT are profiled. CICT technology development is profiled.

VanDalsem, William R.

2003-01-01

79

Visualization and holography: real virtuality  

NASA Astrophysics Data System (ADS)

This work focuses on the attempt to establish an analogue and contiguity between visualization and holography. The majority of methods for processing and analysis data work in the virtual space with its virtual images and shapes. Scientific visualization is an extraction of the significant information from the data space and its presentation as a visual shapes, applicable to the visual thinking. A holography gives us possibility to percept the visual shapes as the virtual object in a form of a real 3D copy, i.e. hologram. We propose to add a light field surrounding the virtual object in description of its computer model. The object is determined as the set of points emit the coherent light. A scheme of direct calculation and printing the digital hologram of the virtual object is also taken into consideration. The result of realization of the scheme for the virtual shape and for the real object is indistinguishable on the stage of reconstruction. This brings us to the concept of the Real Virtuality.

Matveyev, Sergey V.; Klimenko, Stanislav

2002-03-01

80

Ultimate computing. Biomolecular consciousness and nano Technology  

SciTech Connect

The book advances the premise that the cytoskeleton is the cell's nervous system, the biological controller/computer. If indeed cytoskeletal dynamics in the nanoscale (billionth meter, billionth second) are the texture of intracellular information processing, emerging ''NanoTechnologies'' (scanning tunneling microscopy, Feynman machines, von Neumann replicators, etc.) should enable direct monitoring, decoding and interfacing between biological and technological information devices. This in turn could result in important biomedical applications and perhaps a merger of mind and machine: Ultimate Computing.

Hameroff, S.R.

1987-01-01

81

Analysis for Key Technology of Computer Forensic  

Microsoft Academic Search

Electronic evidence is a sort of new style evidence. To improve the probative value of electronic evidence, the paper analysis computer forensic process and key technology, provided the rule of computer forensic, data acquire method and the requirement of forensic device.

Jin Bo; Tao Mingming

82

Computer-Optimized Adaptive Suspension Technology (COAST)  

Microsoft Academic Search

This paper presents a fundamental vehicle suspension system using real-time computer control. This Computer-Optimized Adaptive Suspension Technology (COAST) consists of a microprocessor-controlled, fully integrated, adaptive suspension system. COAST is capable of providing near-optimum performance for any land surface vehicle in any environment and can be implemented in a relatively simple and cost-effective manner.

James M. Hamilton

1985-01-01

83

Computational Intelligence-Based Biometric Technologies  

Microsoft Academic Search

Computational intelligence (CI) technologies are robust, can be successfully applied to complex problems, are efficiently adaptive, and usually have a parallel computational architecture. For those reasons they have been proved to be effective and efficient in bio-metric feature extraction and biometric matching tasks, sometimes used in combination with traditional methods. In this article, we briefly survey two kinds of major

D. Zhang; Wangmeng Zuo

2007-01-01

84

Future Information Processing Technology--1983, Computer Science and Technology.  

ERIC Educational Resources Information Center

Developed by the Institute for Computer Sciences and Technology and the Defense Intelligence Agency with input from other federal agencies, this detailed document contains the 1983 technical forecast for the information processing industry through 1997. Part I forecasts the underlying technologies of hardware and software, discusses changes in the…

Kay, Peg, Ed.; Powell, Patricia, Ed.

85

Meridian: A Middle School Computer Technologies Journal  

NSDL National Science Digital Library

This new ejournal, edited and reviewed by graduate students at North Carolina State University, has a simple focus: to help demonstrate to middle school teachers the best ways of applying computer technologies to classroom teaching and learning. The inaugural issue contains articles about play designed learning, using technology to learn about technology, and gender and digital media. The second issue is slated for June 1998, and submissions are welcomed.

1998-01-01

86

Real-time color holography system for live scene using 4K2K video system  

Microsoft Academic Search

We are studying electronic holography and have developed a real-time color holography system for live scene which includes three functional blocks, capture block, processing block, and display block. In this paper, we will introduce our developed system after describing basic idea that quickly calculates hologram from IP image. The first block, capture block, uses integral photography (IP) technology to capture

Kenji Yamamoto; Tomoyuki Mishina; Ryutaro Oi; Takanori Senoh; Taiichiro Kurita

2010-01-01

87

Medical applications of holography  

Microsoft Academic Search

From the various capabilities of holography for image processing and measuring purposes, holographic interferometric techniques have found more extended application in biological and medical research. Due to their special properties the different methods of holographic interferometry are applied to characteristic fields of biomedical investigations where--similar to nondestructive testing--vibration and deformation analysis is of interest. Features of holographic interferometry, such as

Gert von Bally

1991-01-01

88

Culture Computing: Interactive Technology to Explore Culture  

NASA Astrophysics Data System (ADS)

The present day rapid development of media science and digital technology is offering the modern generation more opportunities as well as challenges as the new fundamental literacy. Therefore, to reach the modern generation on issues such as an appreciation of cultures, we have to find common grounds based on digital media technology. In an increasingly hybrid cultural environment, interaction and fusion of cultural factors with the computer technology will be an investigation into the possibilities of providing an experience into the cultures of the world, operating in the environments the modern generation inhabits. Research has created novel merging of traditional cultures and literature with recent media literacy. Three cultural computing systems, Media Me, BlogWall and Confucius Computer, are presented in this chapter. Studies showed that users gave positive feedback to their experience of interacting with cultural computing systems.

Cheok, Adrian David

89

Pervasive computing and wireless optical network technology  

NASA Astrophysics Data System (ADS)

For reaching the destination that user can operate simply to complete complicated work with high quality in time, elements for pervasive computing should be integrated into an active system. Embedded, nomandic, adaptive and broadband intelligent services will be necessary in the system. The novel Intelligent Pervasive Computing Technologies (IPCT) make those services including high speed services and low speed services etc be provided well. The crucial component parts are the Backbone Mobile Managing technologies (BMM), the Access Mobile Managing technologies (AMM), The Supplementary Independent Mobile Managing Technologies (SIMMT) and so forth. Wireless optical networks are necessities of implementing IPCT. Another key of running IPCT is to optimize the configuration, especially the logic. The pivot of operating is Wireless Optical Agent (WOA) and corresponding contributories. Experiments with simulation indicate IPCT bring high performances for pervasive computing.

Xue, Cai; Cai, Ran; Cai, Guishun; Zeng, Lang; Xue, Lin

2005-11-01

90

Research on Key Technologies of Cloud Computing  

NASA Astrophysics Data System (ADS)

With the development of multi-core processors, virtualization, distributed storage, broadband Internet and automatic management, a new type of computing mode named cloud computing is produced. It distributes computation task on the resource pool which consists of massive computers, so the application systems can obtain the computing power, the storage space and software service according to its demand. It can concentrate all the computing resources and manage them automatically by the software without intervene. This makes application offers not to annoy for tedious details and more absorbed in his business. It will be advantageous to innovation and reduce cost. It's the ultimate goal of cloud computing to provide calculation, services and applications as a public facility for the public, So that people can use the computer resources just like using water, electricity, gas and telephone. Currently, the understanding of cloud computing is developing and changing constantly, cloud computing still has no unanimous definition. This paper describes three main service forms of cloud computing: SAAS, PAAS, IAAS, compared the definition of cloud computing which is given by Google, Amazon, IBM and other companies, summarized the basic characteristics of cloud computing, and emphasized on the key technologies such as data storage, data management, virtualization and programming model.

Zhang, Shufen; Yan, Hongcan; Chen, Xuebin

91

Cloud Computing Technologies and Applications  

NASA Astrophysics Data System (ADS)

In a nutshell, the existing Internet provides to us content in the forms of videos, emails and information served up in web pages. With Cloud Computing, the next generation of Internet will allow us to "buy" IT services from a web portal, drastic expanding the types of merchandise available beyond those on e-commerce sites such as eBay and Taobao. We would be able to rent from a virtual storefront the basic necessities to build a virtual data center: such as CPU, memory, storage, and add on top of that the middleware necessary: web application servers, databases, enterprise server bus, etc. as the platform(s) to support the applications we would like to either rent from an Independent Software Vendor (ISV) or develop ourselves. Together this is what we call as "IT as a Service," or ITaaS, bundled to us the end users as a virtual data center.

Zhu, Jinzy

92

Computational challenges of emerging novel true 3D holographic displays  

Microsoft Academic Search

A hologram can produce all the 3D depth cues that the human visual system uses to interpret and perceive real 3D objects. As such it is arguably the ultimate display technology. Computer generated holography, in which a computer calculates a hologram that is then displayed using a highly complex modulator, combines the ultimate qualities of a traditional hologram with the

Colin D. Cameron; Douglas A. Pain; Maurice Stanley; Christopher W. Slinger

2000-01-01

93

Computer holograms - A critical review  

Microsoft Academic Search

Computer holography is required when direct recording of wavefronts by holographic imagery is impossible or highly inconvenient, e.g., in cases of microwave holography, infrared holography, or acoustic holography. Three types of fringe-drawn holograms are distinguished, in which a kinoform type, producing only phase variations, is inherently a computer hologram for most applications. The positional accuracy requirements for holograms drawn fringe-by-fringe

H. J. Caulfield

1985-01-01

94

Infrared holography using a microbolometer array.  

PubMed

We describe a series of experiments to demonstrate holography at far-infrared wavelengths using an uncooled microbolometer array. Simple interference patterns and Fresnel zone holograms are recorded with a 10 W cw CO(2) laser illumination in a Mach-Zehnder interferometer setup. A sparse-sampling method is used to sample the hologram at a rate dependent on the bandwidth of the object wavefront rather than the carrier frequency. The samples are then used to reconstruct the complex object wavefront in the hologram plane, which is Fresnel backpropagated for image reconstruction. Uncooled microbolometer arrays are most commonly used in passive mode to image the thermal-blackbody radiation. Their technology has matured to include the wavelength range of far-infrared to submillimeter radiation. The use of microbolometers with active illumination for holography, as described in this paper, suggests their interesting future applications. PMID:18239701

George, Nicholas; Khare, Kedar; Chi, Wanli

2008-02-01

95

Holography at x-ray wavelengths  

SciTech Connect

We discuss alternative holographic techniques for imaging microscopic structures with a short-pulse, high intensity, high-quantum-energy laser. We find that Fresnel transform holography using a photoresist for registration of the hologram is most likely to be within the scope of near term technology. Although it has advantages in time gating, using an in-line electron microscope for hologram registration has an unacceptable tradeoff between quantum efficiency and resolution. Fourier transform holography using a reflector to generate the reference beam might be a reasonable alternative using low resolution film, but is necessarily more complicated. We discuss the dependence of the required laser intensity on the resolution sought and on the elastic and absorption cross sections. We conclude that resonant scattering must be used to obtain holograms at reasonable intensities.

Solem, T.C.; Baldwin, G.C.; Chapline, G.F.

1981-01-01

96

Holography cameras for art and education  

NASA Astrophysics Data System (ADS)

Holographers have an expectation that holography might be a photography of tomorrow. But now, holography isn't still popular because of difficulties of its making process. With my experiment of teaching holography at Art University, good results are obtained by the use of holography-camera instead of conventional optical kit. This paper illustrates the outline of holo-camera and its use.

Ishikawa, Jun

1995-04-01

97

Roadmap: Computer Technology Application Development Technology Associate of Applied Business  

E-print Network

Software 3 COMT 20001 C++ Programming or COMT 20011 Java Programming or COMT 21036 Web Scripting 3 Two and Configuration 4 COMT 21009 Seminar in Computer Technology 3 COMT 20001 C++ Programming or COMT 20011 Java Important Notes Semester One: [16-17 Credit Hours] COMT 11002 Visual Basic Programming 3 COMT 11000

Sheridan, Scott

98

Business/Computer Technologies. State Competency Profile.  

ERIC Educational Resources Information Center

This document contains 272 competencies, grouped into 36 units, for tech prep programs in the business/computer technology cluster. The competencies were developed through collaboration of Ohio business, industry, and labor representatives and secondary and associate degree educators. The competencies are rated either "essential" (necessary to…

Ohio State Univ., Columbus. Center on Education and Training for Employment.

99

Competency Index. [Business/Computer Technologies Cluster.  

ERIC Educational Resources Information Center

This index allows the user to scan the competencies under each title for the 28 subjects appropriate for use in a competency list for the 12 occupations within the business/computer technologies cluster. Titles of the 28 units are as follows: employability skills; professionalism; teamwork; professional and ethical standards; economic and business…

Ohio State Univ., Columbus. Center on Education and Training for Employment.

100

Michigan Technological University Department of Computer Science  

E-print Network

in Houghton near Lake Superior in Michigan's scenic Upper Peninsula. The community offers fourMichigan Technological University Department of Computer Science Department Chair Michigan departments in the College of Sciences and Arts, the depart- ment has 18 faculty, including 14 full

101

University Students' Perceptions of Computer Technology Experiences  

ERIC Educational Resources Information Center

On the basis of a survey as a research method (involving from designing surveys to reporting on surveys), the author examined students' perceptions of computers and information technology. In fall 2005, a survey questionnaire was administered to students enrolled in education courses at a university in the western Pacific. Attention was given to…

Inoue, Yukiko

2007-01-01

102

Computer Technology and College Students' Reading Habits  

Microsoft Academic Search

The purposes of this study were to determine if computer technology had an impact on EFL college students' reading habits and if students' online reading habits and their demographic variables, such as gender, age, CJEE scores, employment status, and online hours were related. 124 valid survey questionnaires were collected from college students in a university in southern Taiwan. The results

Li-Bi Shen

2006-01-01

103

Soft computing technologies in nuclear engineering applications  

Microsoft Academic Search

The application of soft computing technologies, particularly neural networks, fuzzy logic, and genetic algorithms, to the surveillance, diagnostics and operation of nuclear power plants and their components is an area that has great potential for exploitation. Areas of potential application are to the surveillance and diagnostics of complete nuclear power plants and to specific systems such as check valves, instrumentation

Lefteri H. Tsoukalas

1999-01-01

104

Aesthetic message of holography  

NASA Astrophysics Data System (ADS)

Gisele Freund states that every historical epoch has its own artistic modes of expression that reflect the political character. thoughts and tastes of the times ill. At another point she writes that each society creates its own particular modes of expression largely through its life-style and tradition and that these modes in turn reflect the epoch. Every change in society influences the theme and type of artistic representation [2]. If one agrees with Freund's point of view . it becomes necessary to look at holography from a perspective different from those used up to now. We have to ask in which way and using what aesthetic methods and means does holography correspond with the thoughts and tastes of our times or. to put it differently. whether the aesthetic message of the medium is able to influence as well as express the characteristics and trends of the present experience. Above all, it is essential to examine what holography is and how this medium articulates its aesthetic message. This is not intended to be another detailed explanation of the technical principles of the recording and reconstruction of a hologram. which has already been done innumerable times 13]. Of more importance here is the intention to investigate the aesthetic side of the medium.

Zec, Peter

1991-02-01

105

Medical applications of holography  

NASA Astrophysics Data System (ADS)

From the various capabilities of holography for image processing and measuring purposes, holographic interferometric techniques have found more extended application in biological and medical research. Due to their special properties the different methods of holographic interferometry are applied to characteristic fields of biomedical investigations where--similar to nondestructive testing--vibration and deformation analysis is of interest. Features of holographic interferometry, such as the possibility of noncontactive, three-dimensional investigations with a large field-of-depth, are used with advantage. The main applications can be found in basic research e.g., in audiology, dentistry, opthalmology, and experimental orthopedics. Because of the great number of investigations and the variety of medical domains in which these investigations were performed this survey is confined to some characteristic examples. As in all fields of optics and laser metrology, a review on biomedical applications of holography would be incomplete if military developments and utilization were not mentioned. As demonstrated by selected examples, the increasing interlacing of science with the military does not stop at domains that traditionally are regarded as exclusively oriented to human welfare--like biomedical research. The term ''Star Wars Medicine'', which becomes an increasingly popular expression for laser applications (including holography) in medicine, characterizes the consequences of this development.

von Bally, Gert

1991-11-01

106

Black holes and holography  

NASA Astrophysics Data System (ADS)

The idea of holography in gravity arose from the fact that the entropy of black holes is given by their surface area. The holography encountered in gauge/gravity duality has no such relation however; the boundary surface can be placed at an arbitrary location in AdS space and its area does not give the entropy of the bulk. The essential issues are also different between the two cases: in black holes we get Hawking radiation from the 'holographic surface' which leads to the information issue, while in gauge/gravity duality there is no such radiation. To resolve the information paradox we need to show that there are real degrees of freedom at the horizon of the hole; this is achieved by the fuzzball construction. In gauge/gravity duality we have instead a field theory defined on an abstract dual space; there are no gravitational degrees of freedom at the holographic boundary. It is important to understand the relations and differences between these two notions of holography to get a full understanding of the lessons from the information paradox.

Mathur, Samir D.

2012-12-01

107

Electron Holography of Magnetic Materials  

E-print Network

3 Electron Holography of Magnetic Materials Takeshi Kasama1, Rafal E. Dunin-Borkowski2 and Marco Transmission electron microscopy (TEM) involves the use of high-energy (60-3000 keV) electrons that have passed of the most powerful techniques for providing this information is electron holography, which was originally

Dunin-Borkowski, Rafal E.

108

Computer technology forecasting at the National Laboratories  

SciTech Connect

The DOE Office of ADP Management organized a group of scientists and computer professionals, mostly from their own national laboratories, to prepare an annually updated technology forecast to accompany the Department's five-year ADP Plan. The activities of the task force were originally reported in an informal presentation made at the ACM Conference in 1978. This presentation represents an update of that report. It also deals with the process of applying the results obtained at a particular computing center, Brookhaven National Laboratory. Computer technology forecasting is a difficult and hazardous endeavor, but it can reap considerable advantage. The forecast performed on an industry-wide basis can be applied to the particular needs of a given installation, and thus give installation managers considerable guidance in planning. A beneficial side effect of this process is that it forces installation managers, who might otherwise tend to preoccupy themselves with immediate problems, to focus on longer term goals and means to their ends. (RWR)

Peskin, A M

1980-01-01

109

Evaluation of Advanced Computing Techniques and Technologies: Reconfigurable Computing  

NASA Technical Reports Server (NTRS)

The focus of this project was to survey the technology of reconfigurable computing determine its level of maturity and suitability for NASA applications. To better understand and assess the effectiveness of the reconfigurable design paradigm that is utilized within the HAL-15 reconfigurable computer system. This system was made available to NASA MSFC for this purpose, from Star Bridge Systems, Inc. To implement on at least one application that would benefit from the performance levels that are possible with reconfigurable hardware. It was originally proposed that experiments in fault tolerance and dynamically reconfigurability would be perform but time constraints mandated that these be pursued as future research.

Wells, B. Earl

2003-01-01

110

High-density recording storage system by Collinear holography  

NASA Astrophysics Data System (ADS)

Collinear TM Holography, proposed and demonstrated by OPTWARE Corporation, can produce a small, practical holographic versatile disc (HVD TM) drive system more easily than conventional 2-axis holography. With Collinear TM technologies' unique configuration the optical pickup can be designed as small as DVDs, and can be placed on one side of the recording media. As servo technology is being introduced to control the objective lens to be maintained precisely to the disc in the recording and the reconstructing process, a vibration isolator is no longer necessary. Experimental and theoretical studies suggest that the holographic material is very effective in increasing the recording density of the system. A high density data recording of Collinear TM Holography by reducing optical noise is also demonstrated.

Horimai, Hideyoshi; Tan, Xiaodi; Aoki, Yoshio

2006-04-01

111

Foundations of computer forensics: A technology for the fight against computer crime  

Microsoft Academic Search

With the rapid advance in computer and network technology, computer-based electronic evidence has increasingly played an important role in the courtroom over the last decade. Computer forensics, a growing discipline rooted in forensic science and computer security technology, focuses on acquiring electronic evidence from computer systems to prosecute computer crimes, national security threats, and computer abuse. It has lost its

Yun Wang; James Cannady; James Rosenbluth

2005-01-01

112

NASA Future Computing and Communications Technologies  

NSDL National Science Digital Library

A series of NASA Webcasts on Future Computing and Communications Technologies, broadcast live in April and May 2003, are now archived and viewable at this site. Each Webcast was approximately an hour in length and featured notable scientists and technology experts from NASA projects and laboratories. Originally intended for high school juniors and seniors, the presentations addressed issues such as spaceborne communications, nanotechnology, artificially evolving systems, and more. These Webcasts are an excellent resource to learn about NASA research from a high level perspective. This site is also reviewed in the September 26, 2003 NSDL MET Report.

113

Advances in computed tomography imaging technology.  

PubMed

Computed tomography (CT) is an essential tool in diagnostic imaging for evaluating many clinical conditions. In recent years, there have been several notable advances in CT technology that already have had or are expected to have a significant clinical impact, including extreme multidetector CT, iterative reconstruction algorithms, dual-energy CT, cone-beam CT, portable CT, and phase-contrast CT. These techniques and their clinical applications are reviewed and illustrated in this article. In addition, emerging technologies that address deficiencies in these modalities are discussed. PMID:25014788

Ginat, Daniel Thomas; Gupta, Rajiv

2014-07-11

114

Single channel in-line multimodal digital holography Yair Rivenson,1,  

E-print Network

Single channel in-line multimodal digital holography Yair Rivenson,1, * Barak Katz, Roy Kelner, and Joseph Rosen Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, P

Rosen, Joseph

115

Computer Technology and Counseling Psychology: Regression Toward the Machine?  

ERIC Educational Resources Information Center

The current use of computer technology in counseling psychology is explored and the potential negative impact of computer technology is discussed in terms of the misuse of computer applications, dependence on technology, and restriction of the counseling process. Factors contributing to inappropriate use of technology are also discussed along with…

Sampson, James P., Jr.

1986-01-01

116

Technologies for Achieving Field Ubiquitous Computing  

NASA Astrophysics Data System (ADS)

Although the term “ubiquitous” may sound like jargon used in information appliances, ubiquitous computing is an emerging concept in industrial automation. This paper presents the author's visions of field ubiquitous computing, which is based on the novel Internet Protocol IPv6. IPv6-based instrumentation will realize the next generation manufacturing excellence. This paper focuses on the following five key issues: 1. IPv6 standardization; 2. IPv6 interfaces embedded in field devices; 3. Compatibility with FOUNDATION fieldbus; 4. Network securities for field applications; and 5. Wireless technologies to complement IP instrumentation. Furthermore, the principles of digital plant operations and ubiquitous production to support the above key technologies to achieve field ubiquitous systems are discussed.

Nagashima, Akira

117

Noise estimation for off-axis electron holography.  

PubMed

Off-axis electron holography provides access to the phase of the elastically scattered wave in a transmission electron microscope at scales ranging from several hundreds of nanometres down to 0.1nm. In many cases the reconstructed phase shift is directly proportional to projected electric and magnetic potentials rendering electron holography a useful and established characterisation method for materials science. However, quantitative interpretation of experimental phase shifts requires quantitative knowledge about the noise, which has been previously established for some limiting cases only. Here, we present a general noise transfer formalism for off-axis electron holography allowing to compute the covariance (noise) of reconstructed amplitude and phase from characteristic detector functions and general properties of the reconstruction process. Experimentally, we verify the presented noise transfer formulas for two different cameras with and without objects within the errors given by the experimental noise determination. PMID:24821224

Röder, Falk; Lubk, Axel; Wolf, Daniel; Niermann, Tore

2014-09-01

118

Computational Support for Technology- Investment Decisions  

NASA Technical Reports Server (NTRS)

Strategic Assessment of Risk and Technology (START) is a user-friendly computer program that assists human managers in making decisions regarding research-and-development investment portfolios in the presence of uncertainties and of non-technological constraints that include budgetary and time limits, restrictions related to infrastructure, and programmatic and institutional priorities. START facilitates quantitative analysis of technologies, capabilities, missions, scenarios and programs, and thereby enables the selection and scheduling of value-optimal development efforts. START incorporates features that, variously, perform or support a unique combination of functions, most of which are not systematically performed or supported by prior decision- support software. These functions include the following: Optimal portfolio selection using an expected-utility-based assessment of capabilities and technologies; Temporal investment recommendations; Distinctions between enhancing and enabling capabilities; Analysis of partial funding for enhancing capabilities; and Sensitivity and uncertainty analysis. START can run on almost any computing hardware, within Linux and related operating systems that include Mac OS X versions 10.3 and later, and can run in Windows under the Cygwin environment. START can be distributed in binary code form. START calls, as external libraries, several open-source software packages. Output is in Excel (.xls) file format.

Adumitroaie, Virgil; Hua, Hook; Lincoln, William; Block, Gary; Mrozinski, Joseph; Shelton, Kacie; Weisbin, Charles; Elfes, Alberto; Smith, Jeffrey

2007-01-01

119

Holography constrains quantum bounce  

E-print Network

Recent work in quantum loop cosmology suggests the universe undergoes a bounce when evolving from a previous collapsing phase. However, with non-inflationary matter sources, the scenario appears to strongly violate the holography bound S\\leq A/4 during the bounce, where A now represents the cross-sectional area of the bounce. We also give a simple argument why any inflationary phase after the bounce is unlikely due to prior dissipation of a scalar field kinetic energy phase into regular matter components.

D. H. Coule

2008-02-13

120

DSN Microwave Antenna Holography  

NASA Technical Reports Server (NTRS)

The DSN microwave antenna holography project will obtain three-dimensional pictures of the large DSN antenna surfaces. These pictures must be of suffi icient resolution to allow adjustment of the reflector panels to an rms surface of 0.5 mm (0.25 mm, goal). The major parameters and equations needed to define a holographic measurement system are outlined and then the proof of concept demonstration measurement that was made at DSS-43 (Australia) that resulted in contour maps with spatial resolution of 7 m in the aperture plane and resolution orthogonal to the aperture plane of 0.7 mm was discussed.

Rochblatt, D. J.; Seidel, B. L.

1984-01-01

121

Digital Holography Density Diagnostic for ITER Disruption Mitigation Test Stand  

NASA Astrophysics Data System (ADS)

Digital Holography holds the promise of providing very fast high-resolution density data at a relatively inexpensive price. A proof-of-principle system to demonstrate feasibility of the diagnostic is being designed and built on the ITER Disruption Mitigation Test Stand at ORNL. Although holographic interferometry has long been used as a density diagnostic, this will be the first application of digital holography to this task. While risky due to its unproven nature, digital holography offers the opportunity to provide an unprecedented fine-grain measurement of gas and/or plasma density. In a crossed-sightline configuration, 3-D density diagnosis is possible. This opens the door to developing new physics understanding both for disruption mitigation technology and on experimental fusion research devices. Understanding usually leads to both control and improvement. Details of the diagnostic system design and expected performance will be presented.

Thomas, C. E., Jr.; Baylor, L. R.; Combs, S. K.

2007-11-01

122

Split-illumination electron holography  

SciTech Connect

We developed a split-illumination electron holography that uses an electron biprism in the illuminating system and two biprisms (applicable to one biprism) in the imaging system, enabling holographic interference micrographs of regions far from the sample edge to be obtained. Using a condenser biprism, we split an electron wave into two coherent electron waves: one wave is to illuminate an observation area far from the sample edge in the sample plane and the other wave to pass through a vacuum space outside the sample. The split-illumination holography has the potential to greatly expand the breadth of applications of electron holography.

Tanigaki, Toshiaki; Aizawa, Shinji; Suzuki, Takahiro; Park, Hyun Soon [Advanced Science Institute, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198 (Japan); Inada, Yoshikatsu [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Sendai 980-8577 (Japan); Matsuda, Tsuyoshi [Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012 (Japan); Taniyama, Akira [Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., Amagasaki, Hyogo 660-0891 (Japan); Shindo, Daisuke [Advanced Science Institute, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198 (Japan); Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Sendai 980-8577 (Japan); Tonomura, Akira [Advanced Science Institute, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198 (Japan); Okinawa Institute of Science and Technology, Graduate University, Onna-son, Okinawa 904-0495 (Japan); Central Research Laboratory, Hitachi, Ltd., Hatoyama, Saitama 350-0395 (Japan)

2012-07-23

123

Computational Structures Technology and UVA Center for CST.  

National Technical Information Service (NTIS)

Rapid advances in computer hardware have had a profound effect on various engineering and mechanics disciplines, including the materials, structures, and dynamics disciplines. A new technology, computational structures technology (CST), has recently emerg...

A. K. Noor

1992-01-01

124

Holography and strongly correlated systems  

E-print Network

In this thesis we apply techniques arising from string theory - gauge-gravity/duality, or holography - to problems associated with strongly coupled quantum field theories under extreme conditions such as finite temperature ...

Iqbal, Nabil

2011-01-01

125

Holography Experiments on Optical Imaging.  

ERIC Educational Resources Information Center

Describes experiments intended to produce a better understanding of the holographic method of producing images and optical imaging by other optical systems. Application of holography to teaching physics courses is considered. (Author/SA)

Bonczak, B.; Dabrowski, J.

1979-01-01

126

Active terahertz holography  

NASA Astrophysics Data System (ADS)

We present a novel technology to dynamically control the wave front of the terahertz (THz) beam with photo-generated carriers. The computer generated hologram is projected onto a silicon wafer by a conventional optical spatial light modulator. The photo-generated carriers on the silicon surface will from a hologram to modulate the wave front of the input THz beam. Some special field distributions and vortex beams are generated using this method. This technology is broadband, structure free, tunable, and all-optical controllable. It will provide numerous possible applications in future THz imaging and communication systems.

Xie, Zhenwei; Wang, Xinke; Zhang, Yan

2013-12-01

127

Applications of holography; Proceedings of the Meeting, Los Angeles, CA, January 21-23, 1985  

SciTech Connect

Among the topics discussed are: holographic displays; industrial applications of holography; dual thermoplastic holography recording; holographic interferometry applied to symmetric aerodynamic models in a wind tunnel; and fringe carrier techniques for unambiguous detection of holographically recorded displacements. Attention is also given to: holographic fringe linearization interferometry (FLI) for defect detection; tunable holographic filtering in dichromated gelatin operating in the near infrared region; holographic honeycomb microlenses; and electron-beam fabrication of computer generated holograms (CGH). Among additional topics discussed are: hologram recording with a photopolymer system; white-light Fourier holography; and white light holograms for credit card applications.

Huff, L.

1985-01-01

128

Intraoperative brain tumor resection cavity characterization with conoscopic holography  

NASA Astrophysics Data System (ADS)

Brain shift compromises the accuracy of neurosurgical image-guided interventions if not corrected by either intraoperative imaging or computational modeling. The latter requires intraoperative sparse measurements for constraining and driving model-based compensation strategies. Conoscopic holography, an interferometric technique that measures the distance of a laser light illuminated surface point from a fixed laser source, was recently proposed for non-contact surface data acquisition in image-guided surgery and is used here for validation of our modeling strategies. In this contribution, we use this inexpensive, hand-held conoscopic holography device for intraoperative validation of our computational modeling approach to correcting for brain shift. Laser range scan, instrument swabbing, and conoscopic holography data sets were collected from two patients undergoing brain tumor resection therapy at Vanderbilt University Medical Center. The results of our study indicate that conoscopic holography is a promising method for surface acquisition since it requires no contact with delicate tissues and can characterize the extents of structures within confined spaces. We demonstrate that for two clinical cases, the acquired conoprobe points align with our model-updated images better than the uncorrected images lending further evidence that computational modeling approaches improve the accuracy of image-guided surgical interventions in the presence of soft tissue deformations.

Simpson, Amber L.; Burgner, Jessica; Chen, Ishita; Pheiffer, Thomas S.; Sun, Kay; Thompson, Reid C.; Webster, Robert J., III; Miga, Michael I.

2012-02-01

129

Digital holography with ultimate sensitivity  

NASA Astrophysics Data System (ADS)

We propose a variant of the heterodyne holography scheme that combines the properties of off-axis and phase-shifting holography. This scheme makes it possible to filter off numerically the zero-order image alias and the technical noise of the reference. It is then possible to record and reconstruct holographic images at an extremely low signal level. We show experimentally that the sensitivity of the method is limited only by the quantum nature of photons.

Gross, M.; Atlan, M.

2007-04-01

130

Intel Science and Technology Center for Secure Computing  

E-print Network

and awareness of consequences is delayed. Thus, security technology must help users be aware of actual risk11 Intel Science and Technology Center for Secure Computing University of California at Berkeley: Secure Computing Research for User Benefit Overview Computer technology has enriched billions of people

California at Irvine, University of

131

Improving student retention in computer engineering technology  

NASA Astrophysics Data System (ADS)

The purpose of this research project was to improve student retention in the Computer Engineering Technology program at the Northern Alberta Institute of Technology by reducing the number of dropouts and increasing the graduation rate. This action research project utilized a mixed methods approach of a survey and face-to-face interviews. The participants were male and female, with a large majority ranging from 18 to 21 years of age. The research found that participants recognized their skills and capability, but their capacity to remain in the program was dependent on understanding and meeting the demanding pace and rigour of the program. The participants recognized that curriculum delivery along with instructor-student interaction had an impact on student retention. To be successful in the program, students required support in four domains: academic, learning management, career, and social.

Pierozinski, Russell Ivan

132

Teaching with Technology: The Classroom Manager. Cost-Conscious Computing.  

ERIC Educational Resources Information Center

Teachers discuss how to make the most of technology in the classroom during a tight economy. Ideas include recycling computer printer ribbons, buying replacement batteries for computer power supply packs, upgrading via software, and soliciting donated computer equipment. (SM)

Smith, Rhea; And Others

1992-01-01

133

Micro Computer Technology in Private Social Work Practice  

Microsoft Academic Search

This articlc examines a number of ethical issues related to micro computer technology in independent social work practice. These issues focus on the quantitative nature of computer processing, computerized assessmcnt, and computer use in the therapeutic relationship.

John T. Pardeck

1987-01-01

134

SCHOOL OF ELECTRICAL AND COMPUTER ENGINEERING GEORGIA INSTITUTE OF TECHNOLOGY  

E-print Network

SCHOOL OF ELECTRICAL AND COMPUTER ENGINEERING GEORGIA INSTITUTE OF TECHNOLOGY 2001-2002A N N U A L engineering . . . . .977 Computer engineering-GTREP . . . . . . . . .26 Total electrical and computer engineering degree DEGREES AWARDED B

Bennett, Gisele

135

Evaluating Computer Technology Integration in a Centralized School System  

ERIC Educational Resources Information Center

The study evaluated the current situation in Cyprus elementary classrooms regarding computer technology integration in an attempt to identify ways of expanding teachers' and students' experiences with computer technology. It examined how Cypriot elementary teachers use computers, and the factors that influence computer integration in their…

Eteokleous, N.

2008-01-01

136

Fostering an informal learning community of computer technologies at school  

Microsoft Academic Search

Computer technologies develop at a challenging fast pace. Formal education should not only teach students basic computer skills to meet current computer needs, but also foster student development of informal learning ability for a lifelong learning process. On the other hand, students growing up in the digital world are often more skilled with computer technologies than their teachers. We describe

Lu Xiao; John M. Carroll

2007-01-01

137

Computer Science and Technology Publications. NBS Publications List 84.  

ERIC Educational Resources Information Center

This bibliography lists publications of the Institute for Computer Sciences and Technology of the National Bureau of Standards. Publications are listed by subject in the areas of computer security, computer networking, and automation technology. Sections list publications of: (1) current Federal Information Processing Standards; (2) computer

National Bureau of Standards (DOC), Washington, DC. Inst. for Computer Sciences and Technology.

138

A Brief History of Human Computer Interaction Technology  

E-print Network

A Brief History of Human Computer Interaction Technology Brad A. Myers December, 1996 CMU­CS­96­163 CMU­HCII­96­103 Human Computer Interaction Institute School of Computer Science Carnegie Mellon development of major advances in human­ computer interaction technology, emphasizing the pivotal role

Myers, Brad A.

139

Experimental research of CCD/LCD in holography  

NASA Astrophysics Data System (ADS)

Holography has been widely applied in industry measurement, especially in 3D non-contact testing. Combining a high resolution charge-coupled device (CCD) with a phase modulating liquid crystal display (LCD), holographic interferogram recording and display could be realized by digital holographic technique. Digital holographic technique has a great number of important and practical applications. In the conventional holography hologram was detected and reconstructed by the holography panchromatic plate, or the photoconductive thermoplastic film, or the BSO crystal and etc. But in the digital holography--the numerical version of the conventional holographic technique, hologram is digitally detected by CCD and then displayed on the computer monitor. By reconstruction, the hologram is writted into LCD, then illuminating the LCD with the reference wave, the tested object may be reconstructed optically. In this paper the application technique of CCD/LCD in holography is theoretically studied and the bottle techniques have been solved. According to the resolving power of the CCD and LCD, the angle between the two interfering waves should be less than 3° for recording the interference fringes with high spatial frequency. The simple and prospective optical architecture is perhaps Twyman-Green interferometer for easy to adjust the required small angle between reference and tested object waves, and also optical path deference for satisfying the requirement of spatial and temporal coherence. The disadvantages of CCD/LCD digital holographic technique is the small separation angle between zero-order and +/-1-order diffraction. In order to separate +/-1-order from zero-order diffraction, the minimum fringe spacing formed by the interference of object wave with reference wave should satisfy the sampling theorem. This decides a relationship between the size of object and the recording distance, which will be discussed in detail in the following text. And also discussion about the experimental research of LCD in digital holography would be included in our paper.

Yin, Na; Li, Lintao; Wang, Hongtao; Guo, Fei; Wang, Wensheng

2008-03-01

140

Roadmap: Technical and Applied Studies -Computer Technology Applied Computer Security and Forensics Technology -Bachelor of Technical and Applied Studies  

E-print Network

Roadmap: Technical and Applied Studies - Computer Technology Applied Computer Security year: 2014-2015 Page 1 of 2 | Last Updated: 23-May-14/JSK This roadmap is a recommended semester (2.000) grade. #12;Roadmap: Technical and Applied Studies - Computer Technology Applied Computer

Khan, Javed I.

141

Microwave antenna holography  

NASA Technical Reports Server (NTRS)

This microwave holography technique utilizes the Fourier transform relation between the complex far field radiation pattern of an antenna and the complex aperture field distribution. Resulting aperture phase and amplitude distribution data can be used to precisely characterize various crucial performance parameters, including panel alignment, panel shaping, subreflector position, antenna aperture illumination, directivity at various frequencies, and gravity deformation effects. The methodology of data processing presented here was successfully applied to the Deep Space Network (DSN) 34-m beam waveguide antennas. The antenna performance was improved at all operating frequencies by reducing the main reflector mechanical surface rms error to 0.43 mm. At Ka-band (32 GHz), the estimated improvement is 4.1 dB, resulting in an aperture efficiency of 52 percent. The performance improvement was verified by efficiency measurements and additional holographic measurements.

Rochblatt, David J.; Seidel, Boris L.

1992-01-01

142

Did Computer Technology Diffuse Quickly?: Best and Average Practice in Mainframe Computers, 1968-1983  

Microsoft Academic Search

An economy benefits from advances in technical frontiers only when new technology comes into general use. This paper measures the diffusion of computing equipment at a time when computing technology underwent dramatic technical improvement. These data shed light on the long lag between advances in computing technology and advances in economic performance of users. There is little evidence that long

Shane M. Greenstein

1994-01-01

143

Computer-aided design and computer science technology  

NASA Technical Reports Server (NTRS)

A description is presented of computer-aided design requirements and the resulting computer science advances needed to support aerospace design. The aerospace design environment is examined, taking into account problems of data handling and aspects of computer hardware and software. The interactive terminal is normally the primary interface between the computer system and the engineering designer. Attention is given to user aids, interactive design, interactive computations, the characteristics of design information, data management requirements, hardware advancements, and computer science developments.

Fulton, R. E.; Voigt, S. J.

1976-01-01

144

Mobile Computing and Ubiquitous Networking: Concepts, Technologies and Challenges.  

ERIC Educational Resources Information Center

Analyzes concepts, technologies and challenges related to mobile computing and networking. Defines basic concepts of cellular systems. Describes the evolution of wireless technologies that constitute the foundations of mobile computing and ubiquitous networking. Presents characterization and issues of mobile computing. Analyzes economical and…

Pierre, Samuel

2001-01-01

145

The Intel Science and Technology Center for Social Computing  

E-print Network

is the study of information technologies and digital media as social and cultural phenomena. Rather than usingIntel Labs The Intel Science and Technology Center for Social Computing Abstract Social Computing computing to understand the social, we use social science to understand the contemporary phenomena

Dourish,Paul

146

Roadmap: Applied Engineering Computer Engineering Technology -Bachelor of Science  

E-print Network

Roadmap: Applied Engineering ­ Computer Engineering Technology - Bachelor of Science [AT Kent Core Summary on page 2 #12;Roadmap: Applied Engineering ­ Computer Engineering Technology-BS-AENG-CET] College of Applied Engineering, Sustainability and Technology Catalog Year: 2013-2014 Page 1 of 2 | Last

Khan, Javed I.

147

Computing, Information, and Communications Technology (CICT) Program Overview  

NASA Technical Reports Server (NTRS)

The Computing, Information and Communications Technology (CICT) Program's goal is to enable NASA's Scientific Research, Space Exploration, and Aerospace Technology Missions with greater mission assurance, for less cost, with increased science return through the development and use of advanced computing, information and communication technologies

VanDalsem, William R.

2003-01-01

148

Attitudes to Technology, Perceived Computer Self-Efficacy and Computer Anxiety as Predictors of Computer Supported Education  

ERIC Educational Resources Information Center

There is a large body of research regarding computer supported education, perceptions of computer self-efficacy, computer anxiety and the technological attitudes of teachers and teacher candidates. However, no study has been conducted on the correlation between and effect of computer supported education, perceived computer self-efficacy, computer

Celik, Vehbi; Yesilyurt, Etem

2013-01-01

149

Computer Graphics. Curriculum Guide for Technology Education.  

ERIC Educational Resources Information Center

This curriculum guide for a 1-quarter or 1-semester course in computer graphics is designed to be used with Apple II computers. Some of the topics covered include the following: computer graphics terminology and applications, operating Apple computers, graphics programming in BASIC using various programs and commands, computer graphics painting,…

Craft, Clyde O.

150

Evolutionary computation technologies for space systems  

Microsoft Academic Search

The Evolvable Computation Group, at NASA's Jet Propulsion Laboratory, is tasked with demonstrating the utility of computational engineering and computer optimized design for complex space systems. The group is comprised of researchers over a broad range of disciplines including biology, genetics, robotics, physics, computer science and system design, and employs biologically inspired evolutionary computational techniques to design and optimize complex

Richard J. Terrile; Christoph Adami; Hrand Aghazarian; Savio N. Chau; V. T. Dang; Michael I. Ferguson; Wolfgang Fink; Terrance L. Huntsberger; Gerhard Klimeck; Mark A. Kordon; Seungwon Lee; Paul von Allmen; Joseph Xu

2005-01-01

151

Nanomagnetism Visualized by Electron Holography  

NASA Astrophysics Data System (ADS)

Electron holography, with its high phase and spatial resolutions, is a powerful tool enabling direct visualization of the phase shift of electron waves due to electromagnetic fields inside and/or outside emergent matters. Observing and characterizing the magnetization distributions on a nanometer scale are of vital importance for understanding nanomagnetism and its application to spintronics. For the studies of their magnetic properties and behavior, nanoscale imaging of magnetic field is indispensable. The applications discussed here, using electron holography and Lorentz microscopy, are selected to highlight the visualization of magnetization distribution that has not yet been investigated on the nanometer scale due to device complexity and/or the insufficient spatial resolution of the microscopes available. These studies demonstrate the promise of electron holography not only for real-space, quantitative magnetic-field imaging but also for detecting the ensemble of spins in emergent matter systems.

Park, Hyun Soon

2014-01-01

152

Trinidad Carnival : improving design through computation and digital technology  

E-print Network

This thesis explores the integration of computation and digital technology to support design in the Trinidad Carnival. I argue that computation can contribute to design in the Trinidad Carnival by (1) addressing the dying ...

Noel, Vernelle A. A. (Vernelle Aletia)

2013-01-01

153

Dynamic Structures through Microdifferential Holography  

PubMed Central

The principles of microdifferential holography are developed primarily from nonmathematical argument, and the method's capabilities are compared with those of x-ray and optical diffraction. Microdifferential holography is very sensitive to small displacements of strongly scattering elements of a specimen whether or not they can be optically resolved. We present and interpret differential images of electrical activity of neurons and of contractile activity of isolated skeletal fibers. The latter confirm the suggestion of earlier work that the dynamic regions of contracting muscle are organized along myofibrillar segments rather than by sarcomeres. ImagesFIGURE 2FIGURE 3FIGURE 4FIGURE 5FIGURE 6FIGURE 7 PMID:19431634

Sharnoff, Mark; Brehm, Lawrence P.; Henry, Richard W.

1986-01-01

154

Automated production holography test facility  

SciTech Connect

A holographic nondestructive testing facility has been designed and built to measure the residual strain resulting from proof pressurization of stainless assemblies. The system is now in use as an in-line production test of these assemblies produced at Rockwell International's Rocky Flats Division. A complete high-pressure argon facility was built to achieve the necessary proof pressures. The entire holography and pressurizing operation is performed remotely and controlled automatically by means of a programmable controller using a microprocessor. Details of the holography optics, the pressurized gas system and the electronic controls are given. The holographic reconstruction and interference fringe counting and analysis capabilities of this facility are also discussed.

Dutton, G.W.; Brown, F.A.; Bailey, L.R.

1981-01-01

155

Attitudes Toward Computer Technology Between Nursing and Medical Educators  

PubMed Central

The results of this descriptive study indicated no significant difference between nursing and medical educators' attitudes toward computer technology. Demographic variables and usages of computer technology in educational and clinical practice environments were not significant. Previous experience with computer technology was significant but negatively correlated; whereas, education regarding computer technology was not. Word processing and record keeping in the education environment, however, were negatively correlated with attitudes. In the clinical environment, diagnosing was positively correlated, but patient assessment and network systems were negatively correlated with attitudes.

Harsanyi, Bennie E.; Kelsey, Clyde E.

1989-01-01

156

Electron Holography: phases matter.  

PubMed

Essentially, all optics is wave optics, be it with light, X-rays, neutrons or electrons. The information transfer from the object to the image can only be understood in terms of waves given by amplitude and phase. However, phases are difficult to measure: for slowly oscillating waves such as sound or low-frequency electromagnetic waves, phases can be measured directly; for high frequencies this has to be done by heterodyne detection, i.e. superposition with a reference and averaging over time. In optics, this is called interferometry. Because interference is mostly very difficult to achieve, phases have often been considered 'hidden variables' seemingly pulling the strings from backstage, only visible by their action on the image intensity. This was almost the case in conventional Electron Microscopy with the phase differences introduced by an object. However, in the face of the urgent questions from solid state physics and materials science, these phases have to be determined precisely, because they encode the most dominant object properties, such as charge distributions and electromagnetic fields. After more than six decades of very patient advancement, electron interferometry and holography offer unprecedented analytical facilities down to an atomic scale. Akira Tonomura has prominently contributed to the present state. PMID:23620338

Lichte, Hannes

2013-06-01

157

Zero Sound from Holography  

E-print Network

Quantum liquids are characterized by the distinctive properties such as the low temperature behavior of heat capacity and the spectrum of low-energy quasiparticle excitations. In particular, at low temperature, Fermi liquids exhibit the zero sound, predicted by L. D. Landau in 1957 and subsequently observed in liquid He-3. In this paper, we ask a question whether such a characteristic behavior is present in theories with holographically dual description. We consider a class of gauge theories with fundamental matter fields whose holographic dual in the appropriate limit is given in terms of the Dirac-Born-Infeld action in AdS_{p+1} space. An example of such a system is the N=4 SU(N_c) supersymmetric Yang-Mills theory with N_f massless N=2 hypermultiplets at strong coupling, finite baryon number density, and low temperature. We find that these systems exhibit a zero sound mode despite having a non-Fermi liquid type behavior of the specific heat. These properties suggest that holography identifies a new type of quantum liquids.

A. Karch; D. T. Son; A. O. Starinets

2008-06-24

158

Phase-multiplication holography  

SciTech Connect

This disclosure relates generally to nondestructive testing for identifying structural characteristics of an object by scanned holographic techniques using a known source of radiation, such as electromagnetic or acoustical radiation. It is an object of this invention to provide an apparatus and method for synthetic aperture expansion in holographic imaging applications to construct fringe patterns capable of holographic reproduction where aperture restrictions in nondestructive testing applications would conventionally make such imaging techniques impossible. The apparatus and method result in the production of a sharply defined frontal image of structural characteristics which could not otherwise be imaged because they occur either near the surface of the object or are confined by geometry restricting aperture dimensions available for scanning purposes. The depth of the structural characteristic below the surface of the object can also be determined by the reconstruction parameters which produce the sharpest focus. Lateral resolution is established by simulated reduction in the radiation wavelength and may easily be an order of magnitude less than the electromagnetic wavelength in the material or 2 times the standard depth of penetration. Since the phase multiplication technique is performed on the detected data, the penetration depth available due to the longer wavelength signals applied to the test object remains unchanged. The phase multiplication technique can also be applied to low frequency acoustic holography, resulting in a test which combines excellent penetration of difficult materials with high resolution images.

Collins, H.D.; Prince, J.M.; Davis, T.J.

1982-01-25

159

Computational technology for high-temperature aerospace structures  

NASA Technical Reports Server (NTRS)

The status and some recent developments of computational technology for high-temperature aerospace structures are summarized. Discussion focuses on a number of aspects including: goals of computational technology for high-temperature structures; computational material modeling; life prediction methodology; computational modeling of high-temperature composites; error estimation and adaptive improvement strategies; strategies for solution of fluid flow/thermal/structural problems; and probabilistic methods and stochastic modeling approaches, integrated analysis and design. Recent trends in high-performance computing environment are described and the research areas which have high potential for meeting future technological needs are identified.

Noor, A. K.; Card, M. F.

1992-01-01

160

Petascale Computing Enabling Technologies Project Final Report  

SciTech Connect

The Petascale Computing Enabling Technologies (PCET) project addressed challenges arising from current trends in computer architecture that will lead to large-scale systems with many more nodes, each of which uses multicore chips. These factors will soon lead to systems that have over one million processors. Also, the use of multicore chips will lead to less memory and less memory bandwidth per core. We need fundamentally new algorithmic approaches to cope with these memory constraints and the huge number of processors. Further, correct, efficient code development is difficult even with the number of processors in current systems; more processors will only make it harder. The goal of PCET was to overcome these challenges by developing the computer science and mathematical underpinnings needed to realize the full potential of our future large-scale systems. Our research results will significantly increase the scientific output obtained from LLNL large-scale computing resources by improving application scientist productivity and system utilization. Our successes include scalable mathematical algorithms that adapt to these emerging architecture trends and through code correctness and performance methodologies that automate critical aspects of application development as well as the foundations for application-level fault tolerance techniques. PCET's scope encompassed several research thrusts in computer science and mathematics: code correctness and performance methodologies, scalable mathematics algorithms appropriate for multicore systems, and application-level fault tolerance techniques. Due to funding limitations, we focused primarily on the first three thrusts although our work also lays the foundation for the needed advances in fault tolerance. In the area of scalable mathematics algorithms, our preliminary work established that OpenMP performance of the AMG linear solver benchmark and important individual kernels on Atlas did not match the predictions of our simple initial model. Our investigations demonstrated that a poor default memory allocation mechanism degraded performance. We developed a prototype NUMA library to provide generic mechanisms to overcome these issues, resulting in significantly improved OpenMP performance. After additional testing, we will make this library available to all users, providing a simple means to improve threading on LLNL's production Linux platforms. We also made progress on developing new scalable algorithms that target multicore nodes. We designed and implemented a new AMG interpolation operator with improved convergence properties for very low complexity coarsening schemes. This implementation will also soon be available to LLNL's application teams as part of the hypre library. We presented results for both topics in an invited plenary talk entitled 'Efficient Sparse Linear Solvers for Multi-Core Architectures' at the 2009 HPCMP Institutes Annual Meeting/CREATE Annual All-Hands Meeting. The interpolation work was summarized in a talk entitled 'Improving Interpolation for Aggressive Coarsening' at the 14th Copper Mountain Conference on Multigrid Methods and in a research paper that will appear in Numerical Linear Algebra with Applications. In the area of code correctness, we significantly extended our behavior equivalence class identification mechanism. Specifically, we not only demonstrated it works well at very large scales but we also added the ability to classify MPI tasks not only by function call traces, but also by specific call sites (source code line numbers) being executed by tasks. More importantly, we developed a new technique to determine relative logical execution progress of tasks in the equivalence classes by combining static analysis with our original dynamic approach. We applied this technique to a correctness issue that arose at 4096 tasks during the development of the new AMG interpolation operator discussed above. This scale isat the limit of effectiveness of production tools, but our technique quickly located the erroneous source code, demonstrating the power of

de Supinski, B R

2010-02-14

161

Ubiquitous Computing on the Run: Motivating Fitness by Computing Technology  

Microsoft Academic Search

This paper introduces fitness technologies and describes how research mostly looks at the 'fanciness' of certain cardio-based technologies rather than how they motivate users. From the view that exercise should ideally be fun, but most often needs basic motivation, we suggest studying how technology can help motivating people to exercise. Finally, the motivation for attending the workshop on 'Monitoring, measuring

Louise Barkhuus

162

Technological Evolution of Personal Computers and Market Implications  

Microsoft Academic Search

The aim of this article is to highlight how technological innovation in the personal computer industry is modifying both market structure and relationships between manufacturers and customers. To measure technological change a model based on the technical approach has been used. This model considers the product as a set of techno-economic characteristics. About 650 models on the personal computer market

Emilio Esposito; Michele Mastroianni

1998-01-01

163

Information and computer technology use in Australian social work education  

Microsoft Academic Search

Computer technology is now an every day aspect of both our personal and professional lives. Recently however, concern has been raised as to the preparedness of social work students to use this tool effectively when entering the practice setting. This paper sets out to address the issue by investigating the extent and ways in which computer technology is included in

Scheryl Hayhoe; Maureen Dollard

2000-01-01

164

The Impact of Computer Technology on the Family.  

ERIC Educational Resources Information Center

Computer technology as it affects home and family life is explored. Elements of this technology which are examined include electronic fund transfers (EFT), consumer rights and responsibilities relating to use of EFT, working at home via computer, housing design, costs of computerizing the home, and computerized aids for the handicapped. (CT)

Bailey, Anne Wiseman

1982-01-01

165

RAY ACOUSTICS USING COMPUTER GRAPHICS TECHNOLOGY  

Microsoft Academic Search

The modeling of room acoustics and simulation of sound wave propagation remain a difficult and computationally expensive task. Two main techniques have evolved, with one focusing on a real physical - wave-oriented - sound propagation, while the other ap- proximates sound waves as rays using raytracing techniques. Due to many advances in computer science, and especially computer graphics over the

Niklas Röber; Ulrich Kaminski; Maic Masuch

2007-01-01

166

CICT Computing, Information, and Communications Technology Program  

NASA Technical Reports Server (NTRS)

The CICT Program is part of the NASA Aerospace Technology Enterprise's fundamental technology thrust to develop tools. processes, and technologies that enable new aerospace system capabilities and missions. The CICT Program's four key objectives are: Provide seamless access to NASA resources- including ground-, air-, and space-based distributed information technology resources-so that NASA scientists and engineers can more easily control missions, make new scientific discoveries, and design the next-generation space vehicles, provide high-data delivery from these assets directly to users for missions, develop goal-oriented human-centered systems, and research, develop and evaluate revolutionary technology.

Laufenberg, Lawrence; Tu, Eugene (Technical Monitor)

2002-01-01

167

Feasibility study of complex wavefield retrieval in off-axis acoustic holography employing an acousto-optic sensor  

PubMed Central

We propose and experimentally demonstrate a new method for complex-valued wavefield retrieval in off-axis acoustic holography. The method involves use of an intensity-sensitive acousto-optic (AO) sensor, optimized for use at 3.3 MHz, to record the acoustic hologram and a computational method for reconstruction of the object wavefield. The proposed method may circumvent limitations of conventional implementations of acoustic holography and may facilitate the development of acoustic-holography-based biomedical imaging methods. PMID:21669451

Rodriguez, Guillermo Lopez; Weber, Joshua; Sandhu, Jaswinder Singh; Anastasio, Mark A.

2011-01-01

168

XML Technologies in Computer Assisted Learning and Testing Systems  

Microsoft Academic Search

The learning and assessment activities have undergone major changes due to\\u000athe development of modern technologies. The computer-assisted learning and\\u000atesting has proven a number of advantages in the development of modern\\u000aeducational system. The paper suggests a solution for the computer-assisted\\u000atesting, which uses XML technologies, a solution that could make the basis for\\u000adeveloping a learning computer-assisted system.

Adrian Cojocariu; Cristina Ofelia Stanciu

2009-01-01

169

Ultra-realistic imaging: a new beginning for display holography  

NASA Astrophysics Data System (ADS)

Recent improvements in key foundation technologies are set to potentially transform the field of Display Holography. In particular new recording systems, based on recent DPSS and semiconductor lasers combined with novel recording materials and processing, have now demonstrated full-color analogue holograms of both lower noise and higher spectral accuracy. Progress in illumination technology is leading to a further major reduction in display noise and to a significant increase of the clear image depth and brightness of such holograms. So too, recent progress in 1-step Direct-Write Digital Holography (DWDH) now opens the way to the creation of High Virtual Volume Displays (HVV) - large format full-parallax DWDH reflection holograms having fundamentally larger clear image depths. In a certain fashion HVV displays can be thought of as providing a high quality full-color digital equivalent to the large-format laser-illuminated transmission holograms of the sixties and seventies. Back then, the advent of such holograms led to much optimism for display holography in the market. However, problems with laser illumination, their monochromatic analogue nature and image noise are well cited as being responsible for their failure in reality. Is there reason for believing that the latest technology improvements will make the mark this time around? This paper argues that indeed there is.

Bjelkhagen, Hans I.; Brotherton-Ratcliffe, David

2014-02-01

170

Emerging Models and Technologies for Computation (EMT) Program Solicitation  

E-print Network

such as biological systems, quantum phenomena, nanoscale science and engineering, and other novel computing concepts. To bring fundamental changes to software, hardware and architectural design aspects of future computingEmerging Models and Technologies for Computation (EMT) Program Solicitation NSF 07-523 Replaces

Mazumder, Pinaki

171

Roadmap: Applied Engineering Computer Engineering Technology -Bachelor of Science  

E-print Network

Roadmap: Applied Engineering ­ Computer Engineering Technology - Bachelor of Science [AT Requirement 3 See Kent Core Summary on page 2 #12;Roadmap: Applied Engineering ­ Computer Engineering Notes Semester Seven: [15 Credit Hours] TECH 33222 Digital Design for Computer Engineering 3 MIS 24056

Sheridan, Scott

172

Illinois Institute of Technology Electrical and Computer Engineering  

E-print Network

Illinois Institute of Technology Electrical and Computer Engineering Department Chair Search of the Electrical and Computer Engineering (ECE) Department (www.ece.iit.edu). IIT is a private research university of power engineering, image and signal processing, communications engineering, computer engineering

Heller, Barbara

173

Computer Simulation Technology and Demonstration S. Schafrik & M. Karmis  

E-print Network

Computer Simulation Technology and Demonstration S. Schafrik & M. Karmis Virginia Center for Coal constraints. A user- friendly visual simulation computer tool for the Windows environment is demonstrated INTRODUCTION Imitating the operations of real-life systems or proc- esses is the main purpose of computer

174

Principals Are Key to Effective Use of Computer Technology.  

ERIC Educational Resources Information Center

Urges principals to exercise leadership in adopting the technology afforded by microcomputers. Offers statistics concerning the sales, cost, and use of computers, advice about the application of computers to administrative work, and guidelines for administrators who want to adapt computers to their needs. (WD)

Corbett, John J.; And Others

1982-01-01

175

Document: P1337 Category: Computing Technologies, Hardware License Status: Available to License Texas Industry Cluster: Information and Computer Technology  

E-print Network

Inventors Document: P1337 Category: Computing Technologies, Hardware License Status: Available to License Texas Industry Cluster: Information and Computer Technology Quantum dot applications for flash design using a protein-templated array of quantum dots reduces failure rates. When combined with a new

Lightsey, Glenn

176

Computer Technology Standards of Learning for Virginia's Public Schools  

ERIC Educational Resources Information Center

The Computer/Technology Standards of Learning identify and define the progressive development of essential knowledge and skills necessary for students to access, evaluate, use, and create information using technology. They provide a framework for technology literacy and demonstrate a progression from physical manipulation skills for the use of…

Virginia Department of Education, 2005

2005-01-01

177

Cutting Technology Costs with Refurbished Computers  

ERIC Educational Resources Information Center

Many district administrators are finding that they can save money on computers by buying preowned ones instead of new ones. The practice has other benefits as well: It allows districts to give more computers to more students who need them, and it also promotes good environmental practices by keeping the machines out of landfills, where they…

Dessoff, Alan

2010-01-01

178

Stevens Institute of Technology Computer Science Department  

E-print Network

, Hoboken NJ 07030-5991 Cell: 412-508-2167 Email: jingrui.he@gmail.com Homepage: www.cs.cmu-conductor manufacturing, traffic analytics. Education 9/2008-7/2010 PhD in Machine Learning Department, School of Computer Analysis" 9/2005-9/2008 M. Sci. in Machine Learning Department, School of Computer Science, Carnegie Mellon

Gordon, Geoffrey J.

179

Imaging live humans through smoke and flames using far-infrared digital holography.  

PubMed

The ability to see behind flames is a key challenge for the industrial field and particularly for the safety field. Development of new technologies to detect live people through smoke and flames in fire scenes is an extremely desirable goal since it can save human lives. The latest technologies, including equipment adopted by fire departments, use infrared bolometers for infrared digital cameras that allow users to see through smoke. However, such detectors are blinded by flame-emitted radiation. Here we show a completely different approach that makes use of lensless digital holography technology in the infrared range for successful imaging through smoke and flames. Notably, we demonstrate that digital holography with a cw laser allows the recording of dynamic human-size targets. In this work, easy detection of live, moving people is achieved through both smoke and flames, thus demonstrating the capability of digital holography at 10.6 ?m. PMID:23482109

Locatelli, M; Pugliese, E; Paturzo, M; Bianco, V; Finizio, A; Pelagotti, A; Poggi, P; Miccio, L; Meucci, R; Ferraro, P

2013-03-11

180

Evolving technologies for Space Station Freedom computer-based workstations  

NASA Technical Reports Server (NTRS)

Viewgraphs on evolving technologies for Space Station Freedom computer-based workstations are presented. The human-computer computer software environment modules are described. The following topics are addressed: command and control workstation concept; cupola workstation concept; Japanese experiment module RMS workstation concept; remote devices controlled from workstations; orbital maneuvering vehicle free flyer; remote manipulator system; Japanese experiment module exposed facility; Japanese experiment module small fine arm; flight telerobotic servicer; human-computer interaction; and workstation/robotics related activities.

Jensen, Dean G.; Rudisill, Marianne

1990-01-01

181

U.S. DEPARTMENT OF COMMERCE Technology Administration National Institute of Standards and Technology Computer Attacks  

E-print Network

of our com- puters. In the 1999 Computer Secu- rity Institute/FBI computer crime survey, fifty that 130,000 government sites totaling 1,100,000 hosts were subject to attacks in 1998. Computer crime and Technology Computer Attacks: What They Are and How to Defend Against Them Introduction Using malicious

182

The Future of Children: Children and Computer Technology  

NSDL National Science Digital Library

The Future of Children is a publication of The Woodrow Wilson School of Public and International Affairs at Princeton University and The Brookings Institution. The purpose of the site is "to promote effective policies and programs for children" by providing information and research findings. Available from this website is the journal of Children and Computer Technology, which focuses on children's use of computer technology both in school and at home. The articles "summarize the knowledge and research available on how the use of computers affects children's development, whether it increases or decreases the disparities between rich and poor, and whether it can be used effectively to enhance learning." The site describes "promising examples of computer use" and offers recommendations to improve children's access to computers. Other sections include a review of Federal Programs to Increase Children's Access to Educational Technology, a survey on What Children Think About Computers, and a glossary which gives definitions for selected terms and acronyms.

183

Application of advanced computational technology to propulsion CFD  

NASA Technical Reports Server (NTRS)

The Internal Fluid Mechanics Division of the NASA Lewis Research Center is combining the key elements of computational fluid dynamics, aerothermodynamic experiments, and advanced computational technology to bring internal computational fluid dynamics (ICFM) to a state of practical application for aerospace propulsion system design. This paper presents an overview of efforts under way at NASA Lewis to advance and apply computational technology to ICFM. These efforts include the use of modern, software engineering principles for code development, the development of an AI-based user-interface for large codes, the establishment of a high-performance, data communications network to link ICFM researchers and facilities, and the application of parallel processing to speed up computationally intensive and/or time-critical ICFM problems. A multistage compressor flow physics program is cited as an example of efforts to use advanced computational technology to enhance a current NASA Lewis ICFM research program.

Szuch, John R.

1988-01-01

184

Digital holography particle image velocimetry for 3D flow measurement  

NASA Astrophysics Data System (ADS)

A digital in-line holography recording system was used in the holography particle image velocimetry for a 3D flow measurement that are made up of the new full field fluid mechanics experimental technique--DHPIV. In this experiment, the traditional holography film was replaced by a CCD chip that record the interference stripe directly without the darkroom processing, and the virtual image slices in different position were reconstructed by compuation using Fresnel-Kirchhoff integral from the digital image. Also, complex field signal filter was applied in image reconstruction to achieve the thin depth of image field that has strong effecting with the vertical velocity component resolution. Using the frame-straddle CCD techniques, the 3D velocity was computed by 3D cross-correlation through space interrogation block matching through the reconstructed image slices with digital complex field signal filter. Then the 3D velocity, vortex, iso-surface details and the time evolution movie in a 3D flow field were displayed by numerical computation and experimental measurement using this DHPIV method.

Wei, Runjie; Shen, Gongxin; Ding, Hanquan

2003-04-01

185

Digital watermarking technique for holography interference patterns in a transform domain  

Microsoft Academic Search

A digital holography interference pattern generated by a computer calculation (computer generated hologram, CGH) is one of the most expensive contents and its usage is being expanded. Thus, it is highly necessary to protect the ownership of a digital hologram. This paper introduces a watermarking scheme, a method to protect the ownership of digital holograms using the DCT domain data

Hyun-Jun Choi; Young-Ho Seo; Ji-Sang Yoo; Dong-Wook Kim

2008-01-01

186

Schrodinger Holography for z<2  

E-print Network

We investigate holography for asymptotically Schrodinger spacetimes, using a frame formalism. Our dictionary is based on the anisotropic scaling symmetry. We consider z <2, where the holographic dictionary is cleaner; we make some comments on z=2. We propose a definition of asymptotically locally Schrodinger spacetime where the leading components of the frame fields provide suitable geometric boundary data. We show that an asymptotic expansion exists for generic boundary data satisfying our boundary conditions for z<2.

Tomas Andrade; Cynthia Keeler; Alex Peach; Simon F. Ross

2014-08-29

187

CLOUD COMPUTING TECHNOLOGIES PROGRAM An eleven-week in-depth program in the principles, methods, and technologies of Cloud Computing  

E-print Network

CLOUD COMPUTING TECHNOLOGIES PROGRAM An eleven-week in-depth program in the principles, methods, and technologies of Cloud Computing DePaul University's Cloud Computing Technologies Program provides a broad understanding of the different leading Cloud Computing technologies. The program is designed to quickly educate

Schaefer, Marcus

188

Holography: childrens' window to relativity  

NASA Astrophysics Data System (ADS)

This paper is concerned with the development of the concept of natural education. Psychology has discovered that all humans learn intuitively the cultural concepts of time from birth to eight and one-half to ten years of age. Einstein showed us that this must also be the natural time for the development of spatial concepts. The importance of this has been dramatized for me in the past eight years that I have been developing the Laser Arts and Holography Programs and Workshops. I have worked with over 100,000 students kindergarten through eighth grade. I have worked with 175 students age 8 to 10 in three hour and one half workshops specifically on the development of time and space concepts. The concepts developed are based upon the vast amount of psychological evidence related to the natural development of time and space understandings, Dr. Nils Abramson's 'Light in Flight' and subsequent work on the clarification of relativity through holography, and Maria Montessori's method of Scientific Education. The paper also demonstrates the natural method of teaching science to younger students is to teach scientifically. All of the research which has been done in the past 100 years has been used by the educational institutions to try to improve the system. What has not been done is changing the system to how humans learn. Because of the perceived hi-tech nature of the program I am able to dramatize the potential. An outline for a holography curriculum kindergarten through eighth grade is included.

MacShane, James E.

1995-02-01

189

Introduction to an introduction to holography  

NASA Astrophysics Data System (ADS)

A preliminary introduction to holography geared towards artists and the general public is discussed. The method is based on a participatory approach that relates holography to psychology/perception, science/physics, and art/imaging. The overall intention is designed to break down unconscious assumptions.

Unterseher, Fred D.; Deem, Rebecca E.

1995-02-01

190

Theories of Learning and Computer-Mediated Instructional Technologies.  

ERIC Educational Resources Information Center

Describes four major models of learning: behaviorism, cognitivism, constructivism, and social constructivism. Discusses situated cognition; differences between learning theories and instructional approaches; and how computer-mediated technologies can be integrated with learning theories. (LRW)

Hung, David

2001-01-01

191

Simulation of the Lattice QCD and Technological Trends in Computation  

E-print Network

Simulation of Lattice QCD is a challenging computational problem. Currently, technological trends in computation show multiple divergent models of computation. We are witnessing homogeneous multi-core architectures, the use of accelerator on-chip or off-chip, in addition to the traditional architectural models. On the verge of this technological abundance, assessing the performance trade-offs of computing nodes based on these technologies is of crucial importance to many scientific computing applications. In this study, we focus on assessing the efficiency and the performance expected for the Lattice QCD problem on representative architectures and we project the expected improvement on these architectures and their impact on performance for Lattice QCD. We additionally try to pinpoint the limiting factors for performance on these architectures.

K. Ibrahim; J. Jaeger; Z. Liu; L. N. Pouchet; P. Lesnicki; L. Djoudi; D. Barthou; F. Bodin; C. Eisenbeis; G. Grosdidier; O. Pene; P. Roudeau

2008-08-04

192

Technological Imperatives: Using Computers in Academic Debate.  

ERIC Educational Resources Information Center

Intended for forensic educators and debate teams, this document details how one university debate team, at the University of Iowa, makes use of computer resources on campus to facilitate storage and retrieval of information useful to debaters. The introduction notes the problem of storing and retrieving the amount of information required by debate…

Ticku, Ravinder; Phelps, Greg

193

Gabrielle Allen Center for Computation & Technology  

E-print Network

Hurricane RITAHurricane KATRINA Statistics #12;9 Hurricane tracks #12;10 Hurricane Tracks #12;11 #12) NSF DynaCode Urgent Computing for Hurricane Forecasts CNS-0540374 #12;2 #12;SURA Coastal Ocean Scenarios · Hurricane forecasts · Emergency preparedness · Oilspill behaviour · Sea rescue · Military

Allen, Gabrielle

194

Office of Information Technology Newark Computing Services  

E-print Network

and is also available for personally owned computers at a nominal price. Want to upgrade to Windows 8.1? To review the Windows 8.1 systems requirements, please visit http://windows.microsoft.com/en-us/windows-8/system-requirements To review the steps necessary to upgrade from Windows XP to Windows 8.1, please visit

Hanson, Stephen José

195

Using Interactive Computer Technology to Enhance Learning  

ERIC Educational Resources Information Center

We assessed the effects of using LearnStar[TM], an interactive, computer-based teaching tool, as an in-class exam review method. Students with higher LearnStar review scores had higher grades. Furthermore, students' satisfaction ratings indicated that LearnStar reviews were more enjoyable and conducive to participation than traditional reviews.…

Pemberton, Joy R.; Borrego, Joaquin, Jr.; Cohen, Lee M.

2006-01-01

196

Computers for artificial intelligence a technology assessment and forecast  

SciTech Connect

This study reviews the development and current state-of-the-art in computers for artificial intelligence, including LISP machines, AI workstations, professional and engineering workstations, minicomputers, mainframes, and supercomputers. Major computer systems for AI applications are reviewed. The use of personal computers for expert system development is discussed, and AI software for the IBM PC, Texas Instrument Professional Computer, and Apple MacIntosh is presented. Current research aimed at developing a new computer for artificial intelligence is described, and future technological developments are discussed.

Miller, R.K.

1986-01-01

197

Future technologies from trends in computer forensic science  

Microsoft Academic Search

The origins of computer forensic science are examined and correlated to the evolution of forensic technologies and future research and development. Techniques to recover information from attempts to destroy files or inflict physical damage to the computer are illustrated. Included is a discussion on the specialized environments, tools and techniques required to recover information from physically damaged disks. Magnetic techniques

V. Civie; R. Civie

1998-01-01

198

Roadmap: Technical and Applied Studies Computer Technology Internet/Multimedia  

E-print Network

Roadmap: Technical and Applied Studies ­ Computer Technology Internet/Multimedia ­ Bachelor Multimedia Development Tools 3 C COMT 36318 Survey of Information Security, Internet Fraud and Computer Course 4-5 See note 1 on page 2; number of credits required depends on meeting minimum 121 credit hours

Sheridan, Scott

199

Forest-Based Translation Institute of Computing Technology  

E-print Network

Forest-Based Translation Haitao Mi Institute of Computing Technology Qun Liu Institute of Computing of Pennsylvania #12;Forest-based Translation Two Approaches in Syntax MT 2 #12;Forest-based Translation Two · with a synchronous grammar · generate translations accordingly 2 #12;Forest-based Translation Two Approaches

Plotkin, Joshua B.

200

Hindawi Publishing Corporation International Journal of Computer Games Technology  

E-print Network

the novel system architecture and protocols used to transfer the game graphics data across the network the original work is properly cited. 1. Introduction Computer games constitute nowadays one of the most dynamicHindawi Publishing Corporation International Journal of Computer Games Technology Volume 2009

Bouras, Christos

201

Men's and Women's Attitudes toward Computer Technology: A Comparison.  

ERIC Educational Resources Information Center

A survey of 62 business-communication students compared the attitudes of men and women about (1) the value of technology in making users more productive; (2) the impact of computers on people and their work environment; and (3) the relative comfort of men and women when using computers. Results indicated that women were more positive on all three…

Ray, Charles M.; Sormunen, Carolee; Harris, Thomas M.

1999-01-01

202

Computer-Integrated Manufacturing Technology. Tech Prep Competency Profile.  

ERIC Educational Resources Information Center

This tech prep competency profile for computer-integrated manufacturing technology begins with definitions for four occupations: manufacturing technician, quality technician, mechanical engineering technician, and computer-assisted design/drafting (CADD) technician. A chart lists competencies by unit and indicates whether entire or partial unit is…

Lakeland Tech Prep Consortium, Kirtland, OH.

203

Computer-Free Technology...Seeing Is Believing.  

ERIC Educational Resources Information Center

Compact disk-interactive (CD-i) offers high technology learning without computers. CD-i machines work like a VCR, combining video images with interactive aspects of playing a computer game. The paper explains how classes can use CD-i, how to learn and use CD-i, why teachers like CD-i, and what the costs are. (SM)

Winter, Ruth

1995-01-01

204

Institute for Computer Sciences and Technology. Annual Report FY 1986.  

ERIC Educational Resources Information Center

Activities of the Institute for Computer Sciences and Technology (ICST) within the U.S. Department of Commerce during fiscal year 1986 are described in this annual report, which summarizes research and publications by ICST in the following areas: (1) standards and guidelines for computer security, including encryption and message authentication…

National Bureau of Standards (DOC), Washington, DC. Inst. for Computer Sciences and Technology.

205

Roadmap: Radiologic Imaging Sciences -Computed Tomography (with AAS Radiologic Technology) -  

E-print Network

20020 Biological Structure and Function (5) 5-6 Fulfills Kent Core Basic Sciences; see note 1 CHEM 10050Roadmap: Radiologic Imaging Sciences - Computed Tomography (with AAS Radiologic Technology) - Bachelor of Radiologic and Imaging Sciences Technology [RE-BRIT-RIS-CTRT] Regional College Catalog Year

Sheridan, Scott

206

The Reflexive Relationship between Computer Games Technology and the Law  

Microsoft Academic Search

Computer Games Technology (CGT) is an important phenomenon in the evolution of the relationship between Communications Technology (CT) and the law. CGT is reflexively linked with the evolution of law. Thus (for example) the development of CGT is conditioned, and will continue to be affected, by the evolution of law and legal principles. The legal domains of Intellectual Property (IP)

JAMES TUNNEY

207

Internet and computer technology hazards: Perspectives for family counselling  

Microsoft Academic Search

Families are increasingly integrating computing technologies into their everyday activities, expanding the range of external influence upon them. For many families, basic notions of 'home' are undergoing shifts as large-scale cultural and economic changes occur that are related to the 'Information age' and as family members spend more time on the Internet and with advanced communications technologies. The Internet is

Jo Ann Oravec

2000-01-01

208

Ubiquitous Social Computing Technologies to Foster Design Thinking and Creativity  

E-print Network

1 Ubiquitous Social Computing Technologies to Foster Design Thinking and Creativity Wassim Jabi New Passerini New Jersey Institute of Technology pkatia@njit.edu ABSTRACT Design thinking using studio-based models of education has been proved over many years to foster creativity and innovation in the field

Borcea, Cristian

209

Beyond Computer Literacy: Supporting Youth's Positive Development through Technology  

ERIC Educational Resources Information Center

In a digital era in which technology plays a role in most aspects of a child's life, having the competence and confidence to use computers might be a necessary step, but not a goal in itself. Developing character traits that will serve children to use technology in a safe way to communicate and connect with others, and providing opportunities for…

Bers, Marina Umaschi

2010-01-01

210

The Intel Science and Technology Center for Secure Computing  

E-print Network

1 Intel Labs The Intel Science and Technology Center for Secure Computing Investing in New Levels Berkeley #12;2 Intel Labs Today's Announcement New Intel Science and Technology Center (ISTC) for Secure Investigators (Intel & Lead University) After completing 5 year charters, new ISTCs can be formed to respond

California at Irvine, University of

211

Color holography to produce highly realistic three-dimensional images.  

PubMed

The 1964 publication by Emmett Leith and Juris Upatnieks [J. Opt. Soc. Am. 54, 1295 (1964)] introduced the possibility of using holograms to record three-dimensional (3D) objects. Since then, there has been an interest in creating display holograms, i.e., holograms primarily produced to show objects in 3D. More recently, full color holography has become a reality, which was predicted in the 1964 paper. To record a hologram in which both the 3D shape and the color of the object are accurately reproduced, at least three laser wavelengths are needed. By computer simulation of the holographic color rendering process, the required amount of laser wavelengths and their distribution within the visible electromagnetic spectrum have been investigated. The quality of a color hologram also depends on the properties of the recording material. The demand on a panchromatic material for color holography is described. Recording techniques for color holograms are presented as well as the future of color holography as the perfect 3D imaging technique. PMID:18239694

Bjelkhagen, Hans I; Mirlis, Evangelos

2008-02-01

212

Using computers as instructional technology in the pressure ulcer field.  

PubMed

The use of computers by healthcare educators is expanding rapidly because computer-assisted instruction reduces learning time, can be accessed at any time, and is cost-effective. How to evaluate their cost-effectiveness and suggestions for use are presented in detail. The advantages and disadvantages of computer-assisted instruction (CAI) and interactive videodisc (IVD) technologies are reviewed. Several CAI and IVD programs of interest to wound care clinicians are described. PMID:8297487

Bolwell, C

1993-07-01

213

25 CFR 502.7 - Electronic, computer or other technologic aid.  

Code of Federal Regulations, 2013 CFR

... 2013-04-01 false Electronic, computer or other technologic aid. 502.7...THIS CHAPTER § 502.7 Electronic, computer or other technologic aid. (a) Electronic, computer or other technologic aid means any...

2013-04-01

214

25 CFR 502.7 - Electronic, computer or other technologic aid.  

... 2014-04-01 false Electronic, computer or other technologic aid. 502.7...THIS CHAPTER § 502.7 Electronic, computer or other technologic aid. (a) Electronic, computer or other technologic aid means any...

2014-04-01

215

25 CFR 502.7 - Electronic, computer or other technologic aid.  

Code of Federal Regulations, 2012 CFR

... 2012-04-01 false Electronic, computer or other technologic aid. 502.7...THIS CHAPTER § 502.7 Electronic, computer or other technologic aid. (a) Electronic, computer or other technologic aid means any...

2012-04-01

216

25 CFR 502.7 - Electronic, computer or other technologic aid.  

Code of Federal Regulations, 2011 CFR

... 2011-04-01 false Electronic, computer or other technologic aid. 502.7...THIS CHAPTER § 502.7 Electronic, computer or other technologic aid. (a) Electronic, computer or other technologic aid means any...

2011-04-01

217

25 CFR 502.7 - Electronic, computer or other technologic aid.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 false Electronic, computer or other technologic aid. 502.7...THIS CHAPTER § 502.7 Electronic, computer or other technologic aid. (a) Electronic, computer or other technologic aid means any...

2010-04-01

218

3D flat holography: entropy and logarithmic corrections  

NASA Astrophysics Data System (ADS)

We compute the leading corrections to the Bekenstein-Hawking entropy of the Flat Space Cosmological (FSC) solutions in 3D flat spacetimes, which are the flat analogues of the BTZ black holes in AdS3. The analysis is done by a computation of density of states in the dual 2D Galilean Conformal Field Theory and the answer obtained by this matches with the limiting value of the expected result for the BTZ inner horizon entropy as well as what is expected for a generic thermodynamic system. Along the way, we also develop other aspects of holography of 3D flat spacetimes.

Bagchi, Arjun; Basu, Rudranil

2014-03-01

219

3D Flat Holography: Entropy and Logarithmic Corrections  

E-print Network

We compute the leading corrections to the Bekenstein-Hawking entropy of the Flat Space Cosmological (FSC) solutions in 3D flat spacetimes, which are the flat analogues of the BTZ black holes in AdS3. The analysis is done by a computation of density of states in the dual 2D Galilean Conformal Field Theory and the answer obtained by this matches with the limiting value of the expected result for the BTZ inner horizon entropy as well as what is expected for a generic thermodynamic system. Along the way, we also develop other aspects of holography of 3D flat spacetimes.

Arjun Bagchi; Rudranil Basu

2013-12-19

220

Network Computer Technology. Phase I: Viability and Promise within NASA's Desktop Computing Environment  

NASA Technical Reports Server (NTRS)

Over the past several months, major industry vendors have made a business case for the network computer as a win-win solution toward lowering total cost of ownership. This report provides results from Phase I of the Ames Research Center network computer evaluation project. It identifies factors to be considered for determining cost of ownership; further, it examines where, when, and how network computer technology might fit in NASA's desktop computing architecture.

Paluzzi, Peter; Miller, Rosalind; Kurihara, West; Eskey, Megan

1998-01-01

221

Computational Fluid Dynamics Technology for Hypersonic Applications  

NASA Technical Reports Server (NTRS)

Several current challenges in computational fluid dynamics and aerothermodynamics for hypersonic vehicle applications are discussed. Example simulations are presented from code validation and code benchmarking efforts to illustrate capabilities and limitations. Opportunities to advance the state-of-art in algorithms, grid generation and adaptation, and code validation are identified. Highlights of diverse efforts to address these challenges are then discussed. One such effort to re-engineer and synthesize the existing analysis capability in LAURA, VULCAN, and FUN3D will provide context for these discussions. The critical (and evolving) role of agile software engineering practice in the capability enhancement process is also noted.

Gnoffo, Peter A.

2003-01-01

222

Defect characterization by acoustic holography. Volume 1. Imaging in field environments. Final report  

SciTech Connect

Acoustic Holography (AH) equipment was used in a field environment to characterize defects in thick plate components. The program was successful and a large holographic data base was generated. Both optical and computer reconstruction techniques were used to produce AH images of selected defects. The report covers results on both production and non-production components, and describes the equipment and test configurations used to acquire the data. The portion of the program dealing with the production components includes comparative data for conventional NDE techniques (Radiographic and Ultrasonic), Acoustic Holography and destructive tests.

Holt, A.; Brophy, J.

1980-09-01

223

Aberration Correction in Digital Holography  

NASA Astrophysics Data System (ADS)

Phase aberrations due to atmospheric turbulence, experimental conditions or the imaging system itself can severely limit the resolution of an image. Phase aberrations can be spatially dependent, meaning that a linear, space-invariant transfer function cannot fully correct for all the phase errors across the field-of-view. One can use digital holography to access the complex-valued optical field from a laser-illuminated object after detecting the intensity interference between object and reference beams. Then one can digitally apply phase corrections to the field and propagate that field to the object plane to form an image. In this work, we developed image sharpening approaches to the correction of phase aberrations in digital holography. Image sharpening algorithms employ a nonlinear optimization routine to sense and compensate the phase aberrations to form a fine-resolution reconstructed image. In this thesis, we examined phase correction for two specific applications: imaging through multiple phase screens and synthetic-aperture digital holography. In both cases, our work concentrated on numerical simulation, algorithm development, and implementation of laboratory experiments. For imaging through phase screens, we developed a modified sharpness metric which preserves the space-bandwidth product upon propagation to prevent oversharpening the image. We successfully demonstrated successful image reconstructions through multiple phase screens in numerical simulation for two and three phase screens and in a laboratory experiment for two phase screens, simulating space-variant aberrating media such as volume atmospheric turbulence. Synthetic aperture digital holography (SADH) takes a collection of individual translated holographic frames and mosaics them to form a larger aperture. This increased aperture size results in greatly increased resolution (if not degraded by phase aberrations). We developed multiple approaches to aberration correction in SADH. We demonstrated the use of slope measurements between hologram sub-apertures with a non-iterative modal reconstructor to correct lower-order phase errors. Using an angular spectrum propagation technique with an image sharpening approach, we have demonstrated higher-order aberration correction and diffraction-limited resolution for a 12,000 by 18,000 pixel synthetic aperture. Finally, using an approximate Fresnel-like propagator in combination with an image sharpening algorithm, we demonstrated high-resolution, nonparaxial imaging over a region-of-interest for a 32,768 by 32,768 pixel (full gigapixel) synthetic aperture.

Tippie, Abbie E.

224

Photochromic materials for holography: issues and constraints  

NASA Astrophysics Data System (ADS)

Photochromic materials can find application in holography, thanks to the peculiar possibility to change reversibly their transparency in the visible (amplitude holography) and their refractive index in the near infrared region (phase holography). The main advantages of such materials are rewritability and self-development. A large change of the key property is crucial to obtain efficient devices and some strategies are followed, accordingly. Production of the holograms have open important issues regarding the film thickness and the nonlinear response to light, because of the strong absorption of the writing light by the material. Results related to these topics, mainly focused on diarylethene-based materials, are reported.

Bianco, Andrea; Pariani, Giorgio; Zanutta, Alessio; Castagna, Rossella; Bertarelli, Chiara

2012-03-01

225

Damage Detection Using Holography and Interferometry  

NASA Astrophysics Data System (ADS)

This paper reviews classical approaches to damage detection using laser holography and interferometry. The paper then details the modern uses of electronic holography and neural-net-processed characteristic patterns to detect structural damage. The design of the neural networks and the preparation of the training sets are discussed. The use of a technique to optimize the training sets, called folding, is explained. Then a training procedure is detailed that uses the holography-measured vibration modes of the undamaged structures to impart damage-detection sensitivity to the neural networks. The inspections of an optical strain gauge mounting plate and an International Space Station cold plate are presented as examples.

Decker, Arthur J.

2003-01-01

226

Optical holography: Practical applications  

Microsoft Academic Search

This book summarizes practical experience in the use of holographic methods and equipment for solving problems in the fields of physics, technology, biology, medicine, and the fine arts. Results are examined for a number of holographic experiments dealing with self-focusing in optical fibers employed in telecommunications, the survivability of blood cells under cryogenic conditions, climate-induced deformation of images in frescoes

E. A. Antonov; V. M. Ginzburg; E. N. Lekhtsier; E. V. Moroz; E. G. Semenov; B. M. Stepanov; N. S. Khanin; V. Ia. Tsarfin

1978-01-01

227

The change in critical technologies for computational physics  

NASA Technical Reports Server (NTRS)

It is noted that the types of technology required for computational physics are changing as the field matures. Emphasis has shifted from computer technology to algorithm technology and, finally, to visual analysis technology as areas of critical research for this field. High-performance graphical workstations tied to a supercommunicator with high-speed communications along with the development of especially tailored visualization software has enabled analysis of highly complex fluid-dynamics simulations. Particular reference is made here to the development of visual analysis tools at NASA's Numerical Aerodynamics Simulation Facility. The next technology which this field requires is one that would eliminate visual clutter by extracting key features of simulations of physics and technology in order to create displays that clearly portray these key features. Research in the tuning of visual displays to human cognitive abilities is proposed. The immediate transfer of technology to all levels of computers, specifically the inclusion of visualization primitives in basic software developments for all work stations and PCs, is recommended.

Watson, Val

1990-01-01

228

Beyond computer literacy: supporting youth's positive development through technology.  

PubMed

In a digital era in which technology plays a role in most aspects of a child's life, having the competence and confidence to use computers might be a necessary step, but not a goal in itself. Developing character traits that will serve children to use technology in a safe way to communicate and connect with others, and providing opportunities for children to make a better world through the use of their computational skills, is just as important. The Positive Technological Development framework (PTD), a natural extension of the computer literacy and the technological fluency movements that have influenced the world of educational technology, adds psychosocial, civic, and ethical components to the cognitive ones. PTD examines the developmental tasks of a child growing up in our digital era and provides a model for developing and evaluating technology-rich youth programs. The explicit goal of PTD programs is to support children in the positive uses of technology to lead more fulfilling lives and make the world a better place. This article introduces the concept of PTD and presents examples of the Zora virtual world program for young people that the author developed following this framework. PMID:21240949

Bers, Marina Umaschi

2010-01-01

229

Understanding and enhancing user acceptance of computer technology  

NASA Technical Reports Server (NTRS)

Technology-driven efforts to implement computer technology often encounter problems due to lack of acceptance or begrudging acceptance of the personnel involved. It is argued that individuals' acceptance of automation, in terms of either computerization or computer aiding, is heavily influenced by their perceptions of the impact of the automation on their discretion in performing their jobs. It is suggested that desired levels of discretion reflect needs to feel in control and achieve self-satisfaction in task performance, as well as perceptions of inadequacies of computer technology. Discussion of these factors leads to a structured set of considerations for performing front-end analysis, deciding what to automate, and implementing the resulting changes.

Rouse, William B.; Morris, Nancy M.

1986-01-01

230

Fluorescence incoherent color holography.  

PubMed

We present a new imaging method to record multicolor digital holograms from objects emitting fluorescent light. The fluorescent light specific to the emission wavelength of various fluorescent dyes after excitation of three dimensional (3D) objects is recorded on a digital monochrome camera after reflection from a diffractive optical element (DOE). For each wavelength of fluorescent emission, the camera sequentially records three holograms reflected from the DOE, each with a different phase factor of the DOE's function. The three holograms are superposed in a computer to create a complex valued Fresnel hologram of each fluorescent emission. The holograms for each fluorescent color are further combined in a computer to produce a multicolored fluorescence hologram and 3D color image. PMID:19532459

Rosen, Joseph; Brooker, Gary

2007-03-01

231

High density, high performance optical data storage via volume holography: Viability at last?  

Microsoft Academic Search

The long held promise of using volume holography to deliver high performance optical storage is reviewed. The problems, which limited the development for many years, are accessed. Finally, we describe a series of innovations, which may make the technology viable at last.

William L. Wilson; K. Curtis; M. Tackitt; A. Hill; A. Hale; M. Schilling; C. Boyd; S. Campbell; L. Dhar; A. Harris

2000-01-01

232

Self-made silver-bromide-based emulsions for users in holography: manufacturing, processing, and application  

Microsoft Academic Search

Holography is the most fascinating technology for three-dimensional imaging. But despite of many decades of research, the seek for an ideal recording material has never been given up. From all ultra-fine materials, silver bromide emulsions with very small grain sizes have the highest sensitivity. In recent years however, many traditional manufacturers discontinued their production. Meanwhile, newcomers succeeded in manufacturing emulsions

Lothar Duenkel; Juergen Eichler; Gerhard Ackermann; Claudia Schneeweiss

2004-01-01

233

Portable Computer Technology (PCT) Research and Development Program Phase 2  

NASA Technical Reports Server (NTRS)

The subject of this project report, focused on: (1) Design and development of two Advanced Portable Workstation 2 (APW 2) units. These units incorporate advanced technology features such as a low power Pentium processor, a high resolution color display, National Television Standards Committee (NTSC) video handling capabilities, a Personal Computer Memory Card International Association (PCMCIA) interface, and Small Computer System Interface (SCSI) and ethernet interfaces. (2) Use these units to integrate and demonstrate advanced wireless network and portable video capabilities. (3) Qualification of the APW 2 systems for use in specific experiments aboard the Mir Space Station. A major objective of the PCT Phase 2 program was to help guide future choices in computing platforms and techniques for meeting National Aeronautics and Space Administration (NASA) mission objectives. The focus being on the development of optimal configurations of computing hardware, software applications, and network technologies for use on NASA missions.

Castillo, Michael; McGuire, Kenyon; Sorgi, Alan

1995-01-01

234

Design of a fault tolerant airborne digital computer. Volume 2: Computational requirements and technology  

NASA Technical Reports Server (NTRS)

This final report summarizes the work on the design of a fault tolerant digital computer for aircraft. Volume 2 is composed of two parts. Part 1 is concerned with the computational requirements associated with an advanced commercial aircraft. Part 2 reviews the technology that will be available for the implementation of the computer in the 1975-1985 period. With regard to the computation task 26 computations have been categorized according to computational load, memory requirements, criticality, permitted down-time, and the need to save data in order to effect a roll-back. The technology part stresses the impact of large scale integration (LSI) on the realization of logic and memory. Also considered was module interconnection possibilities so as to minimize fault propagation.

Ratner, R. S.; Shapiro, E. B.; Zeidler, H. M.; Wahlstrom, S. E.; Clark, C. B.; Goldberg, J.

1973-01-01

235

Aging and Holography  

E-print Network

Aging phenomena are examples of `non-equilibrium criticality' and can be exemplified by systems with Galilean and scaling symmetries but no time translation invariance. We realize aging holographically using a deformation of a non-relativistic version of gauge/gravity duality. Correlation functions of scalar operators are computed using holographic real-time techniques, and agree with field theory expectations. At least in this setup, general aging phenomena are reproduced holographically by complexifying the bulk space-time geometry, even in Lorentzian signature.

Juan I. Jottar; Robert G. Leigh; Djordje Minic; Leopoldo A. Pando Zayas

2010-04-21

236

Three-Dimensional Nonlinear Acoustical Holography  

E-print Network

Nearfield Acoustical Holography (NAH) is an acoustic field visualization technique that can be used to reconstruct three-dimensional (3-D) acoustic fields by projecting two-dimensional (2-D) data measured on a hologram surface. However, linear NAH...

Niu, Yaying

2013-05-06

237

Holography: Art in an Ephemeral Medium.  

ERIC Educational Resources Information Center

The science of holography provides an opportunity to see reality by illusion using laser light, lenses, and mirrors. To develop as holographic artists, students must first gain proficiency in using its techniques, equipment, and materials. (Author/CMV)

Buterbaugh, James G.

1979-01-01

238

Criteria for the observation of strong-field photoelectron holography  

SciTech Connect

Photoelectron holography is studied experimentally and computationally using the ionization of ground-state xenon atoms by intense near-infrared radiation. A strong dependence of the occurrence of the holographic pattern on the laser wavelength and intensity is observed, and it is shown that the observation of the hologram requires that the ponderomotive energy U{sub p} is substantially larger than the photon energy. The holographic interference is therefore favored by longer wavelengths and higher laser intensities. Our results indicate that the tunneling regime is not a necessary condition for the observation of the holographic pattern, which can be observed under the conditions formally attributed to the multiphoton regime.

Marchenko, T. [UPMC Universite Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique Matiere et Rayonnement, 11 rue Pierre et Marie Curie, F-75005 Paris (France); Huismans, Y. [FOM-Institute AMOLF, Science Park 113, 1098 XG Amsterdam (Netherlands); Schafer, K. J. [Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001 (United States); Vrakking, M. J. J. [FOM-Institute AMOLF, Science Park 113, 1098 XG Amsterdam (Netherlands); Max-Born-Institut, Max Born Strasse 2A, D-12489 Berlin (Germany)

2011-11-15

239

Helicopter mission optimization study. [portable computer technology for flight optimization  

NASA Technical Reports Server (NTRS)

The feasibility of using low-cost, portable computer technology to help a helicopter pilot optimize flight parameters to minimize fuel consumption and takeoff and landing noise was demonstrated. Eight separate computer programs were developed for use in the helicopter cockpit using a hand-held computer. The programs provide the helicopter pilot with the ability to calculate power required, minimum fuel consumption for both range and endurance, maximum speed and a minimum noise profile for both takeoff and landing. Each program is defined by a maximum of two magnetic cards. The helicopter pilot is required to key in the proper input parameter such as gross weight, outside air temperature or pressure altitude.

Olson, J. R.

1978-01-01

240

Establishment of the Center for Biomedical Technology Innovation  

SciTech Connect

The report discussed the following topics: (1) Orthopedic Devices; (2) Hybrid Vector and Method Resulting in Protein Overproduction by Eukaryotic Cells; (3) Surgical Simulator; (4) CBTI (Center for Biomedical Technology Innovation) as an Incubator for Start-up Companies; (5) Voice-activated, computer-assisted surgical robotics; (6) Through transmission ultrasonic 3-D holography for diagnostic imaging; (7) CBTI's Scibermed{trademark} Virtual Institute (SVI); and (8) Laser Oxygenation Tomography.

NONE

2001-12-15

241

COMPUTER MODELING (INDUSTRIAL MULTIMEDIA BRANCH, SUSTAINABLE TECHNOLOGY DIVISION, NRMRL)  

EPA Science Inventory

The Industrial Multimedia Branch of NRMRL's Sustainable Technology Division maintains a research program in modeling of industrial processes for pollution prevention applications. The purpose of this program is to develop computer software tools for the user community to self-ass...

242

Computer Engineering Department at Michigan Technological University for financial support.  

E-print Network

Computer Engineering Department at Michigan Technological University for financial support device modeling: The green's function method, Superlattice Microstruct 28 (2000), 253­278. 5. R. Lake, G, Imperial College Press, London, UK, 1998. 18. G. Pennington, N. Goldsman, A. Akturk, and A. E. Wickenden

Reising, Steven C.

243

Computer-Assisted Foreign Language Teaching and Learning: Technological Advances  

ERIC Educational Resources Information Center

Computer-Assisted Foreign Language Teaching and Learning: Technological Advances highlights new research and an original framework that brings together foreign language teaching, experiments and testing practices that utilize the most recent and widely used e-learning resources. This comprehensive collection of research will offer linguistic…

Zou, Bin; Xing, Minjie; Wang, Yuping; Sun, Mingyu; Xiang, Catherine H.

2013-01-01

244

NASA CST aids U.S. industry. [computational structures technology  

NASA Technical Reports Server (NTRS)

The effect of NASA's computational structures Technology (CST) research on aerospace vehicle design and operation is discussed. The application of this research to proposed version of a high-speed civil transport, to composite structures in aerospace, to the study of crack growth, and to resolving field problems is addressed.

Housner, Jerry M.; Pinson, Larry D.

1993-01-01

245

ENVIRONMENTAL CONSEQUENCES OF TELEMATICS: TELECOMMUNICATION, COMPUTATION, AND INFORMATION TECHNOLOGIES  

EPA Science Inventory

Current important research needs whose results will be critical to Environmental Protection Agency's mission in the next two to three decades with regard to a major expansion in the use of telematics, i.e. telecommunications, computer, and information technology, are identified. ...

246

Designing Ubiquitous Computing Technologies to Motivate Fitness and Health  

Microsoft Academic Search

Physical inactivity in the western world is leading to a range of serious health problems and many health organizations are attempting to address this through new ways of motivating people to have more active lifestyles. This paper suggests using ubiquitous computing technologies to motivate fitness and health. We describe an initial qualitative study of exercise motivation among active individuals as

Louise Barkhuus

2006-01-01

247

Beyond Computer Literacy: Technology Integration and Curriculum Transformation  

ERIC Educational Resources Information Center

Personal computers, the Internet, smartphones, and other forms of information and communication technology (ICT) have changed our world, our job, our personal lives, as well as how we manage our knowledge and time effectively and efficiently. Research findings in the past decades have acknowledged and affirmed that the content the ICT medium…

Safar, Ammar H.; AlKhezzi, Fahad A.

2013-01-01

248

Post-Traumatic Stress Disorder: Opportunities & Challenges for Computing Technology  

E-print Network

Post-Traumatic Stress Disorder: Opportunities & Challenges for Computing Technology Brian M. Landry of the experience of Post- Traumatic Stress Disorder, including recognizing the pre-trauma disposition for PTSD Design, Human Factors Keywords Post-Traumatic Stress Disorder, PTSD, healthcare, mental health, mental

Anderson, Richard

249

A Design Research Program for Textiles and Computational Technology  

Microsoft Academic Search

Textiles and computational technology share a common background in the early days of automation and industrial production. Today, we see a new opportunity for these two, by now, rather disparate areas to be joined in the search for new design spaces for everyday things. It is the ambition of this paper to outline this new design space and to sketch

Lars Hallnäs; Linda Melin; Johan Redström

2001-01-01

250

Roadmap: Business Management Technology Computer Applications -Associate of Applied Business  

E-print Network

Roadmap: Business Management Technology ­ Computer Applications - Associate of Applied Business [RE-AAB-BMRT-CMPA] Regional College Catalog Year: 2013-2014 Page 1 of 1 | Last Updated: 8-May-13/LNHD This roadmap as critical (in boldface and shaded areas) must be completed in the semester listed to ensure a timely

Sheridan, Scott

251

Breakthrough Technologies A New Algorithm for Computational Image Analysis of  

E-print Network

distinct regions, an apical region where the rate of motion, i.e. velocity, rises gradually with positionBreakthrough Technologies A New Algorithm for Computational Image Analysis of Deformable Motion implements an image processing algorithm using a novel combination of optical flow methods for deformable

Baskin, Tobias

252

Integrating cultural issues into the computer and information technology curriculum  

Microsoft Academic Search

Industry leaders and educators in Computer and Information Technology (CIT) have expressed a need for graduates to have a background in professional, societal, and ethical concerns as well as a strong technical capability (Huff and Martin, 1995). Some educators have gone so far as to include cultural awareness: \\

Joyce Currie Little; Mary Granger; Elizabeth S. Adams; Jaana Holvikivi; Susan K. Lippert; Henry M. Walker; Alison Young

2001-01-01

253

Massachusetts Institute of Technology Department of Electrical Engineering & Computer Science  

E-print Network

Massachusetts Institute of Technology Department of Electrical Engineering & Computer Science 6.15 in the textbook Romeo and Juliet start dating, but Juliet will be late on any date by a random amount X, uniformly x on their first date, how should Romeo use this information to update the distribution of ? (b) How

Peraire, Jaime

254

Pervasive Computing and Communication Technologies for U-Learning  

ERIC Educational Resources Information Center

The development of digital information transfer, storage and communication methods influences a significant effect on education. The assimilation of pervasive computing and communication technologies marks another great step forward, with Ubiquitous Learning (U-learning) emerging for next generation learners. In the evolutionary view the 5G (or…

Park, Young C.

2014-01-01

255

SOE Computing Support Provided by Information Technology Services (ITS)  

E-print Network

SOE Computing Support Provided by Information Technology Services (ITS) ITS - SOE Local Services://itrequest.ucsc.edu Use Problem Type "SOE Services" Phone: 459-HELP Email: help@ucsc.edu ITS Local Helpdesk - Baskin Engineering Room 311 SOE Help Desk has limited hours; Main ITS help desk open 8a ­ 5p support.soe

Karplus, Kevin

256

Computer Technology Integration and Student Learning: Barriers and Promise  

ERIC Educational Resources Information Center

Political and institutional support has enabled many institutions of learning to spend millions of dollars to acquire educational computing tools (Ficklen and Muscara, "Am Educ" 25(3):22-29, 2001) that have not been effectively integrated into the curriculum. While access to educational technology tools has remarkably improved in most schools,…

Keengwe, Jared; Onchwari, Grace; Wachira, Patrick

2008-01-01

257

Intraoperative Brain Tumor Resection Cavity Characterization with Conoscopic Holography  

E-print Network

Intraoperative Brain Tumor Resection Cavity Characterization with Conoscopic Holography Amber L ABSTRACT Brain shift compromises the accuracy of neurosurgical image-guided interventions if not corrected approach to correcting for brain shift. Laser range scan, instrument swabbing, and conoscopic holography

Webster III, Robert James

258

Energy and technology review  

SciTech Connect

This issue of Energy and Technology Review contains: Neutron Penumbral Imaging of Laser-Fusion Targets--using our new penumbral-imaging diagnostic, we have obtained the first images that can be used to measure directly the deuterium-tritium burn region in laser-driven fusion targets; Computed Tomography for Nondestructive Evaluation--various computed tomography systems and computational techniques are used in nondestructive evaluation; Three-Dimensional Image Analysis for Studying Nuclear Chromatin Structure--we have developed an optic-electronic system for acquiring cross-sectional views of cell nuclei, and computer codes to analyze these images and reconstruct the three-dimensional structures they represent; Imaging in the Nuclear Test Program--advanced techniques produce images of unprecedented detail and resolution from Nevada Test Site data; and Computational X-Ray Holography--visible-light experiments and numerically simulated holograms test our ideas about an x-ray microscope for biological research.

Poggio, A.J. (ed.)

1988-10-01

259

Holography And Holometry Applications In Dental Research  

NASA Astrophysics Data System (ADS)

The earliest reference to holographic applications appeared in the dental literature in 1972 when Wictorin, Bjelkhagen and Abramson described a method to study elastic deformation of defective gold solder joints in simulated fixed bridges. Their paper, published in the Swedish dental literature, offered a concise presentation of the interferometry technique which led to the development of other research applications of holographic interferometry(holometry) in dentistry. In this presentation, the development and application of the interferometry technique in the dental field will be discussed. Various interesting and potentially useful applications of holography have appeared in the dental literature over the past decade. Some of these, which will be discussed, include the use of holograms as a storage medium for dental study models, multiplexing of computer(CT) scan sections to form white light viewable holograms and the potential application of holographic training aids in the teaching of the basic courses of dental anatomy and restorative dentistry. In addition, some unique related applications will be mentioned including a laser reflection method for accurate non-contact measurement of tooth mobility/movement and a technique for contour mapping of occlusal surfaces to measure wear of restorative materials.

Willenborg, George C.

1987-06-01

260

Bulk curves from boundary data in holography  

NASA Astrophysics Data System (ADS)

We embed spherical Rindler space—a geometry with a spherical hole in its center—in asymptotically anti- de Sitter (AdS) spacetime and show that it carries a gravitational entropy proportional to the area of the hole. Spherical AdS-Rindler space is holographically dual to an ultraviolet sector of the boundary field theory given by restriction to a strip of finite duration in time. Because measurements have finite durations, local observers in the field theory can only access information about bounded spatial regions. We propose a notion of differential entropy that captures uncertainty about the state of a system left by the collection of local, finite-time observables. For two-dimensional conformal field theories we use holography and the strong subadditivity of entanglement to propose a formula for differential entropy and show that it precisely reproduces the areas of circular holes in AdS3. Extending the notion to field theories on strips with variable durations in time, we show more generally that differential entropy computes the areas of all closed, inhomogeneous curves on a spatial slice of AdS3. We discuss the extension to higher-dimensional field theories, the relation of differential entropy to entanglement between scales, and some implications for the emergence of space from the renormalization group flow of entangled field theories.

Balasubramanian, Vijay; Chowdhury, Borun D.; Czech, Bart?omiej; de Boer, Jan; Heller, Michal P.

2014-04-01

261

Acoustic-emission linear-pulse holography  

SciTech Connect

This paper describes Acoustic Emission Linear Pulse Holography which combines the advantages of linear imaging and acoustic emission into a single NDE inspection system. This unique system produces a chronological linear holographic image of a flaw by utilizing the acoustic energy emitted during crack growth. Conventional linear holographic imaging uses an ultrasonic transducer to transmit energy into the volume being imaged. When the crack or defect reflects that energy, the crack acts as a new source of acoustic waves. To formulate an image of that source, a receiving transducer is scanned over the volume of interest and the phase of the received signals is measured at successive points on the scan. The innovation proposed here is the utilization of the crack generated acoustic emission as the acoustic source and generation of a line image of the crack as it grows. A thirty-two point sampling array is used to construct phase-only linear holograms of simulated acoustic emission sources on large metal plates. The phases are calculated using the pulse time-of-flight (TOF) times from the reference transducer to the array of receivers. Computer reconstruction of the image is accomplished using a one-dimensional FFT algorithm (i.e., backward wave). Experimental results are shown which graphically illustrate the unique acoustic emission images of a single point and a linear crack in a 100 mm x 1220 mm x 1220 mm aluminum plate.

Collins, H.D.; Lemon, D.K.; Busse, L.J.

1982-06-01

262

Digital holography-based steganography.  

PubMed

A steganographic method offering a high hiding capacity is presented in which the techniques of digital holography are used to distribute information from a small secret image across the larger pixel field of a cover image. An iterative algorithm is used to design a phase-only or complex hologram from a padded version of the secret image, quantizing this data according to the carrier data bits that are available within the intended cover image. By introducing the hologram data only into low-order bits of larger amplitude cover pixels, the change in the cover image remains imperceptible to the casual observer, with a peak signal-to-noise ratio of >40 dB. PMID:21165128

Hamam, Habib

2010-12-15

263

Depth-filtered digital holography.  

PubMed

We introduce depth-filtered digital holography (DFDH) as a method for quantitative tomographic phase imaging of buried layers in multilayer samples. The procedure is based on the acquisition of multiple holograms for different wavelengths. Analyzing the intensity over wavelength pixel wise and using an inverse Fourier transform leads to a depth-profile of the multilayered sample. Applying a windowed Fourier transform with a narrow window, we choose a depth-of interest (DOI) which is used to synthesize filtered interference patterns that just contain information of this limited depth. We use the angular spectrum method to introduce an additional spatial filtering and to reconstruct the corresponding holograms. After a short theoretical framework we show experimental proof-of-principle results for the method. PMID:23037413

Koukourakis, Nektarios; Jaedicke, Volker; Adinda-Ougba, Adamou; Goebel, Sebastian; Wiethoff, Helge; Höpfner, Henning; Gerhardt, Nils C; Hofmann, Martin R

2012-09-24

264

Acoustic emission linear pulse holography  

DOEpatents

This device relates to the concept of and means for performing Acoustic Emission Linear Pulse Holography, which combines the advantages of linear holographic imaging and Acoustic Emission into a single non-destructive inspection system. This unique system produces a chronological, linear holographic image of a flaw by utilizing the acoustic energy emitted during crack growth. The innovation is the concept of utilizing the crack-generated acoustic emission energy to generate a chronological series of images of a growing crack by applying linear, pulse holographic processing to the acoustic emission data. The process is implemented by placing on a structure an array of piezoelectric sensors (typically 16 or 32 of them) near the defect location. A reference sensor is placed between the defect and the array.

Collins, H.D.; Busse, L.J.; Lemon, D.K.

1983-10-25

265

Computer Assisted Naval Applications of Holography.  

National Technical Information Service (NTIS)

Two systems found in an earlier study to possess potential in naval operational applications were analyzed in greater depth to assess their capabilities and limitations. An underwater acoustic holographic imaging system and an aircraft carrier holographic...

N. H. Farhat, J. Bordogna, W. R. Guard, S. A. Musa, W. E. Wallace

1971-01-01

266

Laser imaging method using computational holography  

Microsoft Academic Search

To form a laser image, there usually are two kinds of image forming methods. One is to direct slender laser beams to special points by light directing element (LDE). The other one is light blocking method where amplitude spatial light modulator (SLM) used to form laser image. The former method has high light efficiency for none light is blocked, however

Tao Wang; Yingjie Yu; Huadong Zheng

2010-01-01

267

Computational Web Intelligence (CWI): synergy of computational intelligence and Web technology  

Microsoft Academic Search

With explosive growth of e-Business on the Internet, and wireless networks, users face more and more challenging network-based application problems in terms of intelligent e-Applications. To increase the QoI (Quality of Intelligence) of e-Business, we propose a new research area called Computational Web Intelligence (CWI) based on both computational intelligence (CI) and Web technology (WT). Generally, the intelligent e-brainware using

Yan-Qing Zhang; T. Y. Lin

2002-01-01

268

Report of the Panel on Computer and Information Technology  

NASA Technical Reports Server (NTRS)

Aircraft have become more and more dependent on computers (information processing) for improved performance and safety. It is clear that this activity will grow, since information processing technology has advanced by a factor of 10 every 5 years for the past 35 years and will continue to do so. Breakthroughs in device technology, from vacuum tubes through transistors to integrated circuits, contribute to this rapid pace. This progress is nearly matched by similar, though not as dramatic, advances in numerical software and algorithms. Progress has not been easy. Many technical and nontechnical challenges were surmounted. The outlook is for continued growth in capability but will require surmounting new challenges. The technology forecast presented in this report has been developed by extrapolating current trends and assessing the possibilities of several high-risk research topics. In the process, critical problem areas that require research and development emphasis have been identified. The outlook assumes a positive perspective; the projected capabilities are possible by the year 2000, and adequate resources will be made available to achieve them. Computer and information technology forecasts and the potential impacts of this technology on aeronautics are identified. Critical issues and technical challenges underlying the achievement of forecasted performance and benefits are addressed.

Lundstrom, Stephen F.; Larsen, Ronald L.

1984-01-01

269

Using Computer Spatial Technologies (Geoplus Petra) for Subsurface Geological Analysis  

NSDL National Science Digital Library

The student compiles oil field well data, including spatial locations and digital well logs, for analysis of subsurface, oil reservoir stratigraphy and lithology using computer spatial technologies software, Geoplus Petra. The students create well log cross sections, make lithologic picks, construct structure and isopach maps, and evaluate lithologic properties, including gross reservoir quality from petrophysical logs. These data are used to interpret depositional environment of the subject formation and make predictions for well bore perforations for oil production. The key value of the exercise is an introduction to the use of computer software to analyze geological data, guided by sedimentologic and stratigraphic insights, and make predictions for resource exploitation.

Barnes, Dave

270

Accelerating technology development through integrated computation and experimentation  

SciTech Connect

This special section of Energy & Fuels comprises a selection of papers presented at the topical conference “Accelerating Technology Development through Integrated Computation and Experimentation”, sponsored and organized by the United States Department of Energy’s National Energy Technology Laboratory (NETL) as part of the 2012 American Institute of Chemical Engineers (AIChE) Annual Meeting held in Pittsburgh, PA, Oct 28?Nov 2, 2012. That topical conference focused on the latest research and development efforts in five main areas related to fossil energy, with each area focusing on the utilization of both experimental and computational approaches: (1) gas separations (membranes, sorbents, and solvents for CO{sub 2}, H{sub 2}, and O{sub 2} production), (2) CO{sub 2} utilization (enhanced oil recovery, chemical production, mineralization, etc.), (3) carbon sequestration (flow in natural systems), (4) advanced power cycles (oxy-combustion, chemical looping, gasification, etc.), and (5) fuel processing (H{sub 2} production for fuel cells).

Shekhawat, Dushyant [U.S. DOE; Srivastava, Rameshwar [Key Logic

2013-01-01

271

Vector Field Visual Data Analysis Technologies for Petascale Computational Science  

SciTech Connect

State-of-the-art computational science simulations generate large-scale vector field data sets. Visualization and analysis is a key aspect of obtaining insight into these data sets and represents an important challenge. This article discusses possibilities and challenges of modern vector field visualization and focuses on methods and techniques developed in the SciDAC Visualization and Analytics Center for Enabling Technologies (VACET) and deployed in the open-source visualization tool, VisIt.

Garth, Christoph; Deines, Eduard; Joy, Kenneth I.; Bethel, E. Wes; Childs, Hank; Weber, Gunther; Ahern, Sean; Pugmire, Dave; Sanderson, Allen; Johnson, Chris

2009-11-13

272

Children and computers: new technology--old concerns.  

PubMed

Computer technology has ushered in a new era of mass media, bringing with it great promise and great concerns about the effect on children's development and well-being. Although we tend to see these issues as being new, similar promises and concerns have accompanied each new wave of media technology throughout the past century: films in the early 1900s, radio in the 1920s, and television in the 1940s. With the introduction of each of these technologies, proponents touted the educational benefits for children, while opponents voiced fears about exposure to inappropriate commercial, sexual, and violent content. This article places current studies on children and computers in a historical context, noting the recurrent themes and patterns in media research during the twentieth century. Initial research concerning each innovation has tended to focus on issues of access and the amount of time children were spending with the new medium. As use of the technology became more prevalent, research shifted to issues related to content and its effects on children. Current research on children's use of computers is again following this pattern. But the increased level of interactivity now possible with computer games and with the communication features of the Internet has heightened both the promise of greatly enriched learning and the concerns related to increased risk of harm. As a result, research on the effects of exposure to various types of content has taken on a new sense of urgency. The authors conclude that to help inform and sustain the creation of more quality content for children, further research is needed on the effects of media on children, and new partnerships must be forged between industry, academia, and advocacy groups. PMID:11255707

Wartella, E A; Jennings, N

2000-01-01

273

Supporting Integrative Negotiation via Computer Mediated Communication Technologies  

Microsoft Academic Search

This paper presents an empirical study of dyadic negotiation supported by computer-mediated communication media. Dyads of MBA students from mainland China and the United States negotiated in a distributed, semisynchronous environment. The task was based on a scenario developed and used extensively by Lituchy (1992) involving distribution of real estate. The technologies were electronic mail and Internet\\/World Wide Web-based threaded

Richard E. Potter; Pierre A. Balthazard

2000-01-01

274

Exploring de Sitter Space and Holography  

E-print Network

We explore aspects of the physics of de Sitter (dS) space that are relevant to holography with a positive cosmological constant. First we display a nonlocal map that commutes with the de Sitter isometries, transforms the bulk-boundary propagator and solutions of free wave equations in de Sitter onto the same quantities in Euclidean anti-de Sitter (EAdS), and takes the two boundaries of dS to the single EAdS boundary via an antipodal identification. Second we compute the action of scalar fields on dS as a functional of boundary data. Third, we display a family of solutions to 3d gravity with a positive cosmological constant in which the equal time sections are arbitrary genus Riemann surfaces, and compute the action of these spaces as a functional of boundary data from the Einstein gravity and Chern-Simons gravity points of view. These studies suggest that if de Sitter space is dual to a Euclidean conformal field theory (CFT), this theory should involve two disjoint, but possibly entangled factors. We argue that these CFTs would be of a novel form, with unusual hermiticity conditions relating left movers and right movers. After exploring these conditions in a toy model, we combine our observations to propose that a holographic dual description of de Sitter space would involve a pure entangled state in a product of two of our unconventional CFTs associated with the de Sitter boundaries. This state can be constructed to preserve the de Sitter symmetries and and its decomposition in a basis appropriate to antipodal inertial observers would lead to the thermal properties of static patch.

Vijay Balasubramanian; Jan de Boer; Djordje Minic

2002-07-29

275

The post-primary computing experiences of institute of technology computing students  

Microsoft Academic Search

This is the first report on the findings of a survey carried out on 578 students entering computing courses at seven institutes of technology in Ireland in 2001. The progress of this cohort of students is charted through the four years of their course using questionnaires and interviews. It is envisioned that the study will highlight the different relationships and

Carol O Shea; Seamus O Shea; Maureen Killeavy

2006-01-01

276

A virtual computer lab for distance biomedical technology education  

PubMed Central

Background The National Library of Medicine's National Center for Biotechnology Information offers mini-courses which entail applying concepts in biochemistry and genetics to search genomics databases and other information sources. They are highly interactive and involve use of 3D molecular visualization software that can be computationally taxing. Methods Methods were devised to offer the courses at a distance so as to provide as much functionality of a computer lab as possible, the venue where they are normally taught. The methods, which can be employed with varied videoconferencing technology and desktop sharing software, were used to deliver mini-courses at a distance in pilot applications where students could see demonstrations by the instructor and the instructor could observe and interact with students working at their remote desktops. Results Student ratings of the learning experience and comments to open ended questions were similar to those when the courses are offered face to face. The real time interaction and the instructor's ability to access student desktops from a distance in order to provide individual assistance and feedback were considered invaluable. Conclusion The technologies and methods mimic much of the functionality of computer labs and may be usefully applied in any context where content changes frequently, training needs to be offered on complex computer applications at a distance in real time, and where it is necessary for the instructor to monitor students as they work. PMID:18366629

Locatis, Craig; Vega, Anibal; Bhagwat, Medha; Liu, Wei-Li; Conde, Jose

2008-01-01

277

Reviews of computing technology: Fiber distributed data interface  

SciTech Connect

Fiber Distributed Data Interface, more commonly known as FDDI, is the name of the standard that describes a new local area network (LAN) technology for the 90`s. This technology is based on fiber optics communications and, at a data transmission rate of 100 million bits per second (mbps), provides a full order of magnitude improvement over previous LAN standards such as Ethernet and Token Ring. FDDI as a standard has been accepted by all major computer manufacturers and is a national standard as defined by the American National Standards Institute (ANSI). FDDI will become part of the US Government Open Systems Interconnection Profile (GOSIP) under Version 3 GOSIP and will become an international standard promoted by the International Standards Organization (ISO). It is important to note that there are no competing standards for high performance LAN`s so that FDDI acceptance is nearly universal. This technology report describes FDDI as a technology, looks at the applications of this technology, examine the current economics of using it, and describe activities and plans by the Information Resource Management (IRM) department to implement this technology at the Savannah River Site.

Johnson, A.J.

1991-12-01

278

Reviews of computing technology: Fiber distributed data interface  

SciTech Connect

Fiber Distributed Data Interface, more commonly known as FDDI, is the name of the standard that describes a new local area network (LAN) technology for the 90's. This technology is based on fiber optics communications and, at a data transmission rate of 100 million bits per second (mbps), provides a full order of magnitude improvement over previous LAN standards such as Ethernet and Token Ring. FDDI as a standard has been accepted by all major computer manufacturers and is a national standard as defined by the American National Standards Institute (ANSI). FDDI will become part of the US Government Open Systems Interconnection Profile (GOSIP) under Version 3 GOSIP and will become an international standard promoted by the International Standards Organization (ISO). It is important to note that there are no competing standards for high performance LAN's so that FDDI acceptance is nearly universal. This technology report describes FDDI as a technology, looks at the applications of this technology, examine the current economics of using it, and describe activities and plans by the Information Resource Management (IRM) department to implement this technology at the Savannah River Site.

Johnson, A.J.

1991-12-01

279

Foreign and Domestic Accomplishments in Magnetic Bubble Device Technology. Computer Science & Technology.  

ERIC Educational Resources Information Center

This document assesses the status of magnetic bubble technology as displayed by non-U.S. research and manufacturing facilities. Non-U.S. research and U.S. accomplishments are described while both technical and economic factors are addressed. Magnetic bubble devices are discussed whenever their application could impact future computer system…

Warnar, Robert B. J.; Calomeris, Peter J.

280

Computational fluid dynamics for propulsion technology: Geometric grid visualization in CFD-based propulsion technology research  

NASA Technical Reports Server (NTRS)

The coordination is examined of necessary resources, facilities, and special personnel to provide technical integration activities in the area of computational fluid dynamics applied to propulsion technology. Involved is the coordination of CFD activities between government, industry, and universities. Current geometry modeling, grid generation, and graphical methods are established to use in the analysis of CFD design methodologies.

Ziebarth, John P.; Meyer, Doug

1992-01-01

281

MSc CSYM021 Java Programming GJH: 2008 MSc Computing (Internet Technology)  

E-print Network

MSc CSYM021 ­ Java Programming © GJH: 2008 MSc Computing (Internet Technology) CSYM 021 Java © GJH: 2008 MSc Computing (Internet Technology) · Create a JFrame application, which opens to full for incorporating intelligence/checks for

Hill, Gary

282

Holography on the Spacelab 3 mission  

NASA Astrophysics Data System (ADS)

Spacelab 3's Fluid Experiment System, in which triglycine sulfate crystals were produced by a low temperature solution-growth technique, employs holography as its primary data-gathering system. This use of holography allows optical techniques which would be difficult to apply in orbit to be used after the holographic data is returned to ground laboratories, using an analysis of the reconstructed holographic image. The system used allows both single- and double-exposure holograms to be obtained in two separate orthogonal configurations.

Owen, Robert B.; Kroes, R. L.

1985-07-01

283

Holography on the Spacelab 3 mission  

NASA Technical Reports Server (NTRS)

Spacelab 3's Fluid Experiment System, in which triglycine sulfate crystals were produced by a low temperature solution-growth technique, employs holography as its primary data-gathering system. This use of holography allows optical techniques which would be difficult to apply in orbit to be used after the holographic data is returned to ground laboratories, using an analysis of the reconstructed holographic image. The system used allows both single- and double-exposure holograms to be obtained in two separate orthogonal configurations.

Owen, Robert B.; Kroes, R. L.

1985-01-01

284

Contrasting string holography to its optical namesake  

E-print Network

We assess the prospects of using metamaterials for simulating various aspects of analogue gravity and holographic correspondence. Albeit requiring a careful engineering of the dielectric media, some hallmark features reminiscent of the hypothetical 'generalized holographic conjecture' can be detected by measuring non-local optical field correlations. The possibility of such simulated behavior might also shed light on the true origin of those apparent holography-like phenomena in the condensed matter systems with emergent effective metrics which may not, in fact, require any references to the string-theoretical holography.

D. V. Khveshchenko

2014-11-06

285

Systems analysis for DSN microwave antenna holography  

NASA Technical Reports Server (NTRS)

Proposed systems for Deep Space Network (DSN) microwave antenna holography are analyzed. Microwave holography, as applied to antennas, is a technique which utilizes the Fourier Transform relation between the complex far-field radiation pattern of an antenna and the complex aperture field distribution to provide a methodology for the analysis and evaluation of antenna performance. Resulting aperture phase and amplitude distribution data are used to precisely characterize various crucial performance parameters, including panel alignment, subreflector position, antenna aperture illumination, directivity at various frequencies, and gravity deformation. Microwave holographic analysis provides diagnostic capacity as well as being a powerful tool for evaluating antenna design specifications and their corresponding theoretical models.

Rochblatt, D. J.

1989-01-01

286

Recent advances in digital holography [Invited].  

PubMed

This article presents an overview of recent advances in the field of digital holography, ranging from holographic techniques designed to increase the resolution of microscopic images, holographic imaging using incoherent illumination, phase retrieval with incoherent illumination, imaging of occluded objects, and the holographic recording of depth-extended objects using a frequency-comb laser, to the design of an infrastructure for remote laboratories for digital-holographic microscopy and metrology. The paper refers to current trends in digital holography and explains them using new results that were recently achieved at the Institute for Applied Optics of the University Stuttgart. PMID:25322137

Osten, Wolfgang; Faridian, Ahmad; Gao, Peng; Körner, Klaus; Naik, Dinesh; Pedrini, Giancarlo; Singh, Alok Kumar; Takeda, Mitsuo; Wilke, Marc

2014-09-20

287

Surface roughness measurement by digital holography  

NASA Astrophysics Data System (ADS)

Surface roughness is crucial guideline to the surface quantity of work piece. This paper demonstrates a simple approach for measurement of surface roughness by using digital holography imaging method based on reflection off-axis lensless Fourier transform (LFT) holography. The surface profiles of the standard roughness sample plates which have the different arithmetic average height values are used as the measurement sample. Comparing the arithmetical average height values of the roughness sample plates obtained from the experiment with the given parameters, the results are in good agreement. It has shown that the method is reasonable and efficient.

Li, Yan; Wang, Dayong; Zhao, Jie; Wang, Guangjun; Wang, Yunxin

2010-10-01

288

DSS-24 microwave holography measurements  

NASA Technical Reports Server (NTRS)

The JPL DSN Microwave Antenna Holography System (MAHST) was applied to the newly constructed DSS-24 34-m beam-waveguide antenna at Goldstone, California. The application of MAHST measurements and corrections at DSS 24 provided the critical RF performance necessary to not only meet the project requirements and goals, but to surpass them. A performance increase of 0.35 dB at X-band (8.45 GHz) and 4.9 dB at Ka-band (32 GHz) was provided by MAHST, resulting in peak efficiencies of 75.25 percent at X-band and 60.6 percent at Ka-band (measured from the Cassegrain focus at f1). The MAHST enabled setting the main reflector panels of DSS 24 to 0.25-mm rms, making DSS 24 the highest precision antenna in the NASA/JPL DSN. The precision of the DSS-24 antenna (diameter/rms) is 1.36 x 10(exp 5), and its gain limit is at 95 GHz.

Rochblatt, D. J.; Withington, P. M.; Jackson, H. J.

1995-01-01

289

Roadmap: Engineering Technology Computer Design Animation and Game Design Bachelor of Science  

E-print Network

Roadmap: Engineering Technology ­ Computer Design Animation and Game Design ­ Bachelor of Science: [14 Credit Hours] CDAG 34001 Computer Animation III 3 CDAG 34004 Technology of Light, Color, Design 3 See Kent Core Summary on page 2 #12;Roadmap: Engineering Technology ­ Computer Design Animation

Khan, Javed I.

290

Using computer-related technology for assessment activities: ethical and professional practice issues for school psychologists  

Microsoft Academic Search

School psychologists have an ethical imperative to consider appropriate uses of computer technology within their assessment practices, given the potential for this technology to improve effectiveness and efficiency. Psychologists hold a parallel responsibility to consider the implications of using computer-related technology vis a vis professional practice concerns related to assessment. Many aspects of computers that render them most helpful—power, speed,

Janet F. Carlson; Virginia Smith Harvey

2004-01-01

291

Using computer technology to foster learning for understanding.  

PubMed

The literature shows that students typically use either a surface approach to learning, in which the emphasis is on memorization of facts, or a deep approach to learning, in which learning for understanding is the primary focus. This paper describes how computer technology, specifically the use of a multimedia CD-ROM, was integrated into a microbiology curriculum as part of the transition from focusing on facts to fostering learning for understanding. Evaluation of the changes in approaches to learning over the course of the term showed a statistically significant shift in a deep approach to learning, as measured by the Study Process Questionnaire. Additional data collected showed that the use of computer technology supported this shift by providing students with the opportunity to apply what they had learned in class to order tests and interpret the test results in relation to specific patient-focused case studies. The extent of the impact, however, varied among different groups of students in the class. For example, students who were recent high school graduates did not show a statistically significant increase in deep learning scores over the course of the term and did not perform as well in the course. The results also showed that a surface approach to learning was an important aspect of learning for understanding, although only those students who were able to combine a surface with a deep approach to learning were successfully able to learn for understanding. Implications of this finding for the future use of computer technology and learning for understanding are considered. PMID:23653533

VAN Melle, E; Tomalty, L

2000-05-01

292

Using Computer Technology to Foster Learning for Understanding  

E-print Network

The literature shows that students typically use either a surface approach to learning, in which the emphasis is on memorization of facts, or a deep approach to learning, in which learning for understanding is the primary focus. This paper describes how computer technology, specifically the use of a multimedia CD-ROM, was integrated into a microbiology curriculum as part of the transition from focusing on facts to fostering learning for understanding. Evaluation of the changes in approaches to learning over the course of the term showed a statistically significant shift in a deep approach to learning, as measured by the Study Process Questionnaire. Additional data collected showed that the use of computer technology supported this shift by providing students with the opportunity to apply what they had learned in class to order tests and interpret the test results in relation to specific patient-focused case studies. The extent of the impact, however, varied among different groups of students in the class. For example, students who were recent high school graduates did not show a statistically significant increase in deep learning scores over the course of the term and did not perform as well in the course. The results also showed that a surface approach to learning was an important aspect of learning for understanding, although only those students who were able to combine a surface with a deep approach to learning were successfully able to learn for understanding. Implications of this finding for the future use of computer technology and learning for understanding are considered. One of the hallmarks of the new science of learning is its

Elaine Van; Melle; Lewis Tomalty

293

Technologies for Large Data Management in Scientific Computing  

NASA Astrophysics Data System (ADS)

In recent years, intense usage of computing has been the main strategy of investigations in several scientific research projects. The progress in computing technology has opened unprecedented opportunities for systematic collection of experimental data and the associated analysis that were considered impossible only few years ago. This paper focuses on the strategies in use: it reviews the various components that are necessary for an effective solution that ensures the storage, the long term preservation, and the worldwide distribution of large quantities of data that are necessary in a large scientific research project. The paper also mentions several examples of data management solutions used in High Energy Physics for the CERN Large Hadron Collider (LHC) experiments in Geneva, Switzerland which generate more than 30,000 terabytes of data every year that need to be preserved, analyzed, and made available to a community of several tenth of thousands scientists worldwide.

Pace, Alberto

2014-01-01

294

Emerging computer technologies and the news media of the future  

NASA Technical Reports Server (NTRS)

The media environment of the future may be dramatically different from what exists today. As new computing and communications technologies evolve and synthesize to form a global, integrated communications system of networks, public domain hardware and software, and consumer products, it will be possible for citizens to fulfill most information needs at any time and from any place, to obtain desired information easily and quickly, to obtain information in a variety of forms, and to experience and interact with information in a variety of ways. This system will transform almost every institution, every profession, and every aspect of human life--including the creation, packaging, and distribution of news and information by media organizations. This paper presents one vision of a 21st century global information system and how it might be used by citizens. It surveys some of the technologies now on the market that are paving the way for new media environment.

Vrabel, Debra A.

1993-01-01

295

Dialoguing with developers and suppliers of adaptive computer technologies: Data and recommendations  

Microsoft Academic Search

The authors report on findings on computer technology needs and concerns of 725 Canadian college and university students with a wide range of disabili- ties. The vast majority of this sample population uses computers and almost half need an adaptation to use computers effectively. The authors provide information about computer technologies used by students with dif- ferent disabilities,describe adaptations \\/adaptive

Jennison V. Asuncion; Catherine S. Fichten; Myrtis E. Fossey; Maria Barile

2002-01-01

296

Mit Bits und Bytes in die Zukunft Information, Computing, and Communication Technologies an der TU Graz  

E-print Network

Technologies Michael Granitzer Life Research and technology in everyday life ­ how results of research affectMit Bits und Bytes in die Zukunft Information, Computing, and Communication Technologies an der TU Graz Into the Future with Bits and Bytes Information, Computing, and Communication Technologies at Graz

297

Computational Biologist 10X Technologies is a Silicon Valley start-up developing new technologies for breakthrough next  

E-print Network

Computational Biologist 10X Technologies is a Silicon Valley start-up developing new technologies for breakthrough next generation sequencing applications. The core technology analyses to assess and guide development of the core technology · Work with software team to commercialize

Borenstein, Elhanan

298

Multiple Energy X-Ray Holography  

NASA Astrophysics Data System (ADS)

Since its introduction by Gabor in 1948, holography has attracted both scientists and laymen alike for its ability to record and reconstruct images of objects in a three-dimensional "life-like" fashion. Although originally designed for that purpose, atomic resolution was not achieved in Gabor's time. Recent developments in electron and x-ray holography, however, have opened the door to obtaining holograms from atomic distributions in the bulk and at surfaces or interfaces of solids, from nanocrystals and clusters and biological materials, such as proteins. Employing numeric Fourier transformation, real space images can be reconstructed from these measurements in a rather straightforward way, carrying the potential for becoming a useful aid in structural investigations. Multi-Energy X-ray Holography (MEXH) is introduced as one particular novel implementation of the holography scheme. The isotropic nature of reference and scattered waves, combined with the long mean free path and the absence of strong multiple scattering make x-rays a versatile holographic probe. The additional multi-energy feature of MEXH provides for a more complete recording of the hologram, avoiding "ghost images" and other aberrations that can quite drastically distort images from single-energy measurements. Applications of the MEXH technique to various bulk and diluted samples are discussed and an outlook into the future of this experimental method is attempted.

Gog, Thomas

1997-03-01

299

Applications of holography to condensed matter physics  

Microsoft Academic Search

Holography is one of the key insights to emerge from string theory. It connects quantum gravity to field theory, and thereby provides a non-perturbative formulation of string theory. This has enabled progress on a range of theoretical issues, from the quantum description of spacetime to the calculation of scattering amplitudes in supersymmetric field theories. There have been important insights into

Simon F Ross

2012-01-01

300

X-ray holography with atomic resolution  

NASA Astrophysics Data System (ADS)

DIFFRACTION methods for crystallographic structure determination suffer from the so-called 'phase problem'; a diffraction pattern provides intensity but not phase information for the scattered beams, and therefore cannot be uniquely inverted to obtain the crystal structure of a sample. Holographic methods1, on the other hand, offer a means of extracting both intensity and phase information. To be useful for crystallographic applications, holography must be implemented with radiation of sufficiently small wavelength to resolve atomic-scale features2. One method, electron-emission holography3-9, uses electron waves and is a powerful tool for studying surface structure; but it cannot image the internal structure of solids because of complications arising from the highly anisotropic nature of electron scattering processes. A proposed alternative method uses X-rays2,10-13, which scatter more isotropically than electrons. Here we demonstrate the efficacy of atomic-scale X-ray holography by obtaining direct images of the three-dimensional arrangement of strontium atoms in the cubic perovskite SrTiO3. With more intense synchrotron sources for illumination, and with the development of improved X-ray detectors, X-ray holography should become a powerful general technique for unambiguous structure determination in condensed matter systems.

Tegze, Miklós; Faigel, Gyula

1996-03-01

301

Synthetic optical holography for rapid nanoimaging  

NASA Astrophysics Data System (ADS)

Holography has paved the way for phase imaging in a variety of wide-field techniques, including electron, X-ray and optical microscopy. In scanning optical microscopy, however, the serial fashion of image acquisition seems to challenge a direct implementation of traditional holography. Here we introduce synthetic optical holography (SOH) for quantitative phase-resolved imaging in scanning optical microscopy. It uniquely combines fast phase imaging, technical simplicity and simultaneous operation at visible and infrared frequencies with a single reference arm. We demonstrate SOH with a scattering-type scanning near-field optical microscope (s-SNOM) where it enables reliable quantitative phase-resolved near-field imaging with unprecedented speed. We apply these capabilities to nanoscale, non-invasive and rapid screening of grain boundaries in CVD-grown graphene, by recording 65 kilopixel near-field images in 26?s and 2.3 megapixel images in 13?min. Beyond s-SNOM, the SOH concept could boost the implementation of holography in other scanning imaging applications such as confocal microscopy.

Schnell, M.; Carney, P. S.; Hillenbrand, R.

2014-03-01

302

Synthetic optical holography for rapid nanoimaging.  

PubMed

Holography has paved the way for phase imaging in a variety of wide-field techniques, including electron, X-ray and optical microscopy. In scanning optical microscopy, however, the serial fashion of image acquisition seems to challenge a direct implementation of traditional holography. Here we introduce synthetic optical holography (SOH) for quantitative phase-resolved imaging in scanning optical microscopy. It uniquely combines fast phase imaging, technical simplicity and simultaneous operation at visible and infrared frequencies with a single reference arm. We demonstrate SOH with a scattering-type scanning near-field optical microscope (s-SNOM) where it enables reliable quantitative phase-resolved near-field imaging with unprecedented speed. We apply these capabilities to nanoscale, non-invasive and rapid screening of grain boundaries in CVD-grown graphene, by recording 65 kilopixel near-field images in 26?s and 2.3 megapixel images in 13?min. Beyond s-SNOM, the SOH concept could boost the implementation of holography in other scanning imaging applications such as confocal microscopy. PMID:24651276

Schnell, M; Carney, P S; Hillenbrand, R

2014-01-01

303

HELIOSEISMIC HOLOGRAPHY OF ACTIVE-REGION SUBPHOTOSPHERES  

E-print Network

-region photospheres. Phase-sensitive seismic holography is now yielding high-resolution maps of sound travel the acoustic field in `focal planes' at depths of interest. Such a sampling will render an acoustic source in the focal plane by a compact, positive image. An acoustic sink in the focal plane against a background

Braun, Douglas C.

304

Approach to real-time holography  

Microsoft Academic Search

Holography which is used in 3-Dimensional data bases was investigated. In most cases the nearer to real time the hologram can be produced the more beneficial. Since a hologram is a superposition of Fresnel zone plate patterns from each point source in the object volume on to the image plane, a cellular array processor is suggested which will produce a

H. L. Davidson; S. S. Friedland

1983-01-01

305

Performance Evaluation of Emerging High Performance Computing Technologies using WRF  

NASA Astrophysics Data System (ADS)

The Arctic Region Supercomputing Center (ARSC) has evaluated multicore processors and other emerging processor technologies for a variety of high performance computing applications in the earth and space sciences, especially climate and weather applications. A flagship effort has been to assess dual core processor nodes on ARSC's Midnight supercomputer, in which two-socket systems were compared to eight-socket systems. Midnight is utilized for ARSC's twice-daily weather research and forecasting (WRF) model runs, available at weather.arsc.edu. Among other findings on Midnight, it was found that the Hypertransport system for interconnecting Opteron processors, memory, and other subsystems does not scale as well on eight-socket (sixteen processor) systems as well as two-socket (four processor) systems. A fundamental limitation is the cache snooping operation performed whenever a computational thread accesses main memory. This increases memory latency as the number of processor sockets increases. This is particularly noticeable on applications such as WRF that are primarily CPU-bound, versus applications that are bound by input/output or communication. The new Cray XT5 supercomputer at ARSC features quad core processors, and will host a variety of scaling experiments for WRF, CCSM4, and other models. Early results will be presented, including a series of WRF runs for Alaska with grid resolutions under 2km. ARSC will discuss a set of standardized test cases for the Alaska domain, similar to existing test cases for CONUS. These test cases will provide different configuration sizes and resolutions, suitable for single processors up to thousands. Beyond multi-core Opteron-based supercomputers, ARSC has examined WRF and other applications on additional emerging technologies. One such technology is the graphics processing unit, or GPU. The 9800-series nVidia GPU was evaluated with the cuBLAS software library. While in-socket GPUs might be forthcoming in the future, current generations of GPUs lack a sufficient balance of computational resources to replace the general-purpose microprocessor found in most traditional supercomputer architectures. ARSC has also worked with the Cell Broadband Engine in a small Playstation3 cluster, as well as a 24-processor system based on IBM's QS22 blades. The QS22 system, called Quasar, features the PowerXCell 8i processor found in the RoadRunner system, along with an InfiniBand network and high performance storage. Quasar overcomes the limitations of the small memory and relatively slow network of the PS3 systems. The presentation will include system-level benchmarks on Quasar, as well as evaluation of the WRF test cases. Another technology evaluation focused on Sun's UltraSPARC T2+ processor, which ARSC evaluated in a two-way system. Each T2+ provides eight processor cores, each of which provides eight threads, for a total of 128 threads in a single system. WRF scalability was good up to the number of cores, but multiple threads per core did not scale as well. Throughout the discussion, practical findings from ARSC will be summarized. While multicore general-purpose microprocessors are anticipated to remain important for large computers running earth and space science applications, the role of other potentially disruptive technologies is less certain. Limitations of current and future technologies will be discussed. class="ab'>

Newby, G. B.; Morton, D.

2008-12-01

306

Implementation of Parallel Computing Technology to Vortex Flow  

NASA Technical Reports Server (NTRS)

Mainframe supercomputers such as the Cray C90 was invaluable in obtaining large scale computations using several millions of grid points to resolve salient features of a tip vortex flow over a lifting wing. However, real flight configurations require tracking not only of the flow over several lifting wings but its growth and decay in the near- and intermediate- wake regions, not to mention the interaction of these vortices with each other. Resolving and tracking the evolution and interaction of these vortices shed from complex bodies is computationally intensive. Parallel computing technology is an attractive option in solving these flows. In planetary science vortical flows are also important in studying how planets and protoplanets form when cosmic dust and gases become gravitationally unstable and eventually form planets or protoplanets. The current paradigm for the formation of planetary systems maintains that the planets accreted from the nebula of gas and dust left over from the formation of the Sun. Traditional theory also indicate that such a preplanetary nebula took the form of flattened disk. The coagulation of dust led to the settling of aggregates toward the midplane of the disk, where they grew further into asteroid-like planetesimals. Some of the issues still remaining in this process are the onset of gravitational instability, the role of turbulence in the damping of particles and radial effects. In this study the focus will be with the role of turbulence and the radial effects.

Dacles-Mariani, Jennifer

1999-01-01

307

Scalable Database Access Technologies for ATLAS Distributed Computing  

E-print Network

ATLAS event data processing requires access to non-event data (detector conditions, calibrations, etc.) stored in relational databases. The database-resident data are crucial for the event data reconstruction processing steps and often required for user analysis. A main focus of ATLAS database operations is on the worldwide distribution of the Conditions DB data, which are necessary for every ATLAS data processing job. Since Conditions DB access is critical for operations with real data, we have developed the system where a different technology can be used as a redundant backup. Redundant database operations infrastructure fully satisfies the requirements of ATLAS reprocessing, which has been proven on a scale of one billion database queries during two reprocessing campaigns of 0.5 PB of single-beam and cosmics data on the Grid. To collect experience and provide input for a best choice of technologies, several promising options for efficient database access in user analysis were evaluated successfully. We present ATLAS experience with scalable database access technologies and describe our approach for prevention of database access bottlenecks in a Grid computing environment.

A. Vaniachine; for the ATLAS Collaboration

2009-10-01

308

Digital holography particle image velocimetry for 3D flow measurement  

Microsoft Academic Search

A digital in-line holography recording system was used in the holography particle image velocimetry for a 3D flow measurement that are made up of the new full field fluid mechanics experimental technique--DHPIV. In this experiment, the traditional holography film was replaced by a CCD chip that record the interference stripe directly without the darkroom processing, and the virtual image slices

Runjie Wei; Gongxin Shen; Hanquan Ding

2003-01-01

309

Optimising satellite earth station antennas by microwave holography  

Microsoft Academic Search

Microwave holography techniques provide exciting possibilities for optimizing the multi-panel reflector antennas of satellite earth stations. In this paper a theoretical overview of the technique is given. Then the advantages of utilizing microwave holography are outlined. The OTC microwave holography system is described, including some preliminary results obtained during the measurement program of the Australian-designed 18-meter antenna erected at OTC's

A. P. Kalcina; R. D. Hawke; G. T. Neil

1987-01-01

310

Use of acoustical holography in nondestructive inspection (review)  

SciTech Connect

A review of works devoted to the use of the acoustical holography method for nondestructive inspection of materials and structures is given. The basic methods in which the acoustical holography method is used and the resolving capacity and area of use of holographic systems are considered. The accuracy of determination of the dimensions and orientation of defects wit h the use of acoustical holography is discussed.

Badalyan, V.G.

1988-03-01

311

Electron holography applied to the study of ceramic materials  

SciTech Connect

The experimental setup of a transmission electron microscope for electron holography is shown. Using a model system of small gold particles on amorphous germanium, capabilities of electron holography are demonstrated. These include nanodiffraction, energy filtering, correction of aberrations and separate display of image amplitude and phase. The method of electron holography is then applied to the characterization of a grain boundary in a Si{sub 3}N{sub 4} ceramic.

Voelkl, E.; Allard, L.F.; Nolan, T.A.

1993-09-01

312

Ultrasonic Imaging of Subsurface Objects Using Photorefractive Dynamic Holography  

SciTech Connect

The INEEL has developed a photorefractive ultrasonic imaging technology that records both phase and amplitude of ultrasonic waves on the surface of solids. Phase locked dynamic holography provides full field images of these waves scattered from subsurface defects in solids, and these data are compared with theoretical predictions. Laser light reflected by a vibrating surface is imaged into a photorefractive material where it is mixed in a heterodyne technique with a reference wave. This demodulates the data and provides an image of the ultrasonic waves in either 2 wave or 4 wave mixing mode. These data images are recorded at video frame rates and show phase locked traveling or resonant acoustic waves. This technique can be used over a broad range of ultrasonic frequencies. Acoustic frequencies from 2 kHz to 10 MHz have been imaged, and a point measuring (non-imaging) version of the system has measured picometer amplitudes at 1 GHz.

Deason, Vance Albert; Telschow, Kenneth Louis; Watson, Scott Marshall

2001-07-01

313

Holography demonstrations and workshops for science and engineering outreach  

NASA Astrophysics Data System (ADS)

The SPIE/OSA Student Chapter at Michigan Technological University have developed demonstrations and workshops for science and engineering outreach. The practical approach to holography promotes the study of photonic related sciences in high school and college-aged students. An introduction to laser safety, optical laboratory practices, and basic laser coherence theory is given in order to first introduce the participants to the science behind the holograms. The students are then able to create a hologram of an item of their choice, personalizing the experience. By engaging directly, the students are able to see how the theory is applied and also enforces a higher level of attention from them so no mistakes are made in their hologram. Throughout the course participants gain an appreciation for photonics by learning how holograms operate and are constructed through hands on creation of their own holograms. This paper reviews the procedures and methods used in the demonstrations and workshop while examining the overall student experience.

Thomas, Weston; Kruse, Kevin; Middlebrook, Christopher

2012-10-01

314

The Impact of Computer Self-Efficacy and Technology Dependence on Computer-Related Technostress: A Social Cognitive Theory Perspective  

Microsoft Academic Search

As professionals and end users of computers, we are often experiencing being constantly surrounded by modern technology. One side effect of modern technology is termed technostress which refers to the “negative impact on attitudes, thoughts, behaviors, or body physiology that is caused either directly or indirectly by technology”. Based on social cognitive theory, this study developed a conceptual model in

Qin Shu; Qiang Tu; Kanliang Wang

2011-01-01

315

Missile signal processing common computer architecture for rapid technology upgrade  

NASA Astrophysics Data System (ADS)

Interceptor missiles process IR images to locate an intended target and guide the interceptor towards it. Signal processing requirements have increased as the sensor bandwidth increases and interceptors operate against more sophisticated targets. A typical interceptor signal processing chain is comprised of two parts. Front-end video processing operates on all pixels of the image and performs such operations as non-uniformity correction (NUC), image stabilization, frame integration and detection. Back-end target processing, which tracks and classifies targets detected in the image, performs such algorithms as Kalman tracking, spectral feature extraction and target discrimination. In the past, video processing was implemented using ASIC components or FPGAs because computation requirements exceeded the throughput of general-purpose processors. Target processing was performed using hybrid architectures that included ASICs, DSPs and general-purpose processors. The resulting systems tended to be function-specific, and required custom software development. They were developed using non-integrated toolsets and test equipment was developed along with the processor platform. The lifespan of a system utilizing the signal processing platform often spans decades, while the specialized nature of processor hardware and software makes it difficult and costly to upgrade. As a result, the signal processing systems often run on outdated technology, algorithms are difficult to update, and system effectiveness is impaired by the inability to rapidly respond to new threats. A new design approach is made possible three developments; Moore's Law - driven improvement in computational throughput; a newly introduced vector computing capability in general purpose processors; and a modern set of open interface software standards. Today's multiprocessor commercial-off-the-shelf (COTS) platforms have sufficient throughput to support interceptor signal processing requirements. This application may be programmed under existing real-time operating systems using parallel processing software libraries, resulting in highly portable code that can be rapidly migrated to new platforms as processor technology evolves. Use of standardized development tools and 3rd party software upgrades are enabled as well as rapid upgrade of processing components as improved algorithms are developed. The resulting weapon system will have a superior processing capability over a custom approach at the time of deployment as a result of a shorter development cycles and use of newer technology. The signal processing computer may be upgraded over the lifecycle of the weapon system, and can migrate between weapon system variants enabled by modification simplicity. This paper presents a reference design using the new approach that utilizes an Altivec PowerPC parallel COTS platform. It uses a VxWorks-based real-time operating system (RTOS), and application code developed using an efficient parallel vector library (PVL). A quantification of computing requirements and demonstration of interceptor algorithm operating on this real-time platform are provided.

Rabinkin, Daniel V.; Rutledge, Edward; Monticciolo, Paul

2004-10-01

316

New Toys for Young Children: Integration of Computer Technology into Early Childhood Education  

Microsoft Academic Search

In recent years there has been a dramatic increase in the availability of computers in educational settings. Since the technology became available for all ages, the amount of technology usage increased in early childhood classrooms (Haugland, 1997). Despite of the dramatic increase of computers in early childhood classrooms, there are still arguments about how to use computers in more effective

Nesrin ISIKOGLU

2003-01-01

317

--------Original Message --------Subject: [robo-ms] Fwd: [Imageworld] C3 Technologies: Computer Vision Specialists  

E-print Network

: Computer Vision Specialists and C/C++ Programmers To: "imageworld@diku.dk" C3 Technologies is recruiting computer vision specialists and C/C++ programmers to the R&D department at our-------- Original Message -------- Subject: [robo-ms] Fwd: [Imageworld] C3 Technologies: Computer

Plotkin, Joshua B.

318

The Diffusion of Computer-Based Technology in K-12 Schools: Teachers' Perspectives  

ERIC Educational Resources Information Center

Because computer technology represents a major financial outlay for school districts and is an efficient method of preparing and delivering lessons, studying the process of teacher adoption of computer use is beneficial and adds to the current body of knowledge. Because the teacher is the ultimate user of computer technology for lesson preparation…

Colandrea, John Louis

2012-01-01

319

Cloud Computing Forum & Workshop IV Agenda National Institute of Standards and Technology  

E-print Network

Cloud Computing Forum & Workshop IV Agenda National Institute of Standards and Technology 100 Policy, Department of State 1. Yeong Ro Lee, National Standards Coordinator for Cloud Computing for Information Society and Media, European Commission 10:40 11:00 USG Cloud Computing Technology Roadmap

320

Promoting Physical Activity through Hand-Held Computer Technology  

PubMed Central

Background Efforts to achieve population-wide increases in walking and similar moderate-intensity physical activities potentially can be enhanced through relevant applications of state-of-the-art interactive communication technologies. Yet few systematic efforts to evaluate the efficacy of hand-held computers and similar devices for enhancing physical activity levels have occurred. The purpose of this first-generation study was to evaluate the efficacy of a hand-held computer (i.e., personal digital assistant [PDA]) for increasing moderate intensity or more vigorous (MOD+) physical activity levels over 8 weeks in mid-life and older adults relative to a standard information control arm. Design Randomized, controlled 8-week experiment. Data were collected in 2005 and analyzed in 2006-2007. Setting/Participants Community-based study of 37 healthy, initially underactive adults aged 50 years and older who were randomized and completed the 8-week study (intervention=19, control=18). Intervention Participants received an instructional session and a PDA programmed to monitor their physical activity levels twice per day and provide daily and weekly individualized feedback, goal setting, and support. Controls received standard, age-appropriate written physical activity educational materials. Main Outcome Measure Physical activity was assessed via the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire at baseline and 8 weeks. Results Relative to controls, intervention participants reported significantly greater 8-week mean estimated caloric expenditure levels and minutes per week in MOD+ activity (p<0.04). Satisfaction with the PDA was reasonably high in this largely PDA-naive sample. Conclusions Results from this first-generation study indicate that hand-held computers may be effective tools for increasing initial physical activity levels among underactive adults. PMID:18201644

King, Abby C.; Ahn, David K.; Oliveira, Brian M.; Atienza, Audie A.; Castro, Cynthia M.; Gardner, Christopher D.

2009-01-01

321

Advances in computer technology: impact on the practice of medicine.  

PubMed

Advances in computer technology provide a wide range of applications which are revolutionizing the practice of medicine. The development of new software for the office creates a web of communication among physicians, staff members, health care facilities and associated agencies. This provides the physician with the prospect of a paperless office. At the other end of the spectrum, the development of 3D work stations and software based on computational chemistry permits visualization of protein molecules involved in disease. Computer assisted molecular modeling has been used to construct working 3D models of lens alpha-crystallin. The 3D structure of alpha-crystallin is basic to our understanding of the molecular mechanisms involved in lens fiber cell maturation, stabilization of the inner nuclear region, the maintenance of lens transparency and cataractogenesis. The major component of the high molecular weight aggregates that occur during cataractogenesis is alpha-crystallin subunits. Subunits of alpha-crystallin occur in other tissues of the body. In the central nervous system accumulation of these subunits in the form of dense inclusion bodies occurs in pathological conditions such as Alzheimer's disease, Huntington's disease, multiple sclerosis and toxoplasmosis (Iwaki, Wisniewski et al., 1992), as well as neoplasms of astrocyte origin (Iwaki, Iwaki, et al., 1991). Also cardiac ischemia is associated with an increased alpha B synthesis (Chiesi, Longoni et al., 1990). On a more global level, the molecular structure of alpha-crystallin may provide information pertaining to the function of small heat shock proteins, hsp, in maintaining cell stability under the stress of disease. PMID:8721907

Groth-Vasselli, B; Singh, K; Farnsworth, P N

1995-01-01

322

Software Holography: Interferometric Data Analysis for the Challenges of Next Generation Observatories  

E-print Network

Next generation radio observatories such as the MWA, LWA, LOFAR, CARMA and SKA provide a number of challenges for interferometric data analysis. These challenges include heterogeneous arrays, direction-dependent instrumental gain, and refractive and scintillating atmospheric conditions. From the analysis perspective, this means that calibration solutions can not be described using a single complex gain per antenna. In this paper we use the optimal map-making formalism developed for CMB analyses to extend traditional interferometric radio analysis techniques--removing the assumption of a single complex gain per antenna and allowing more complete descriptions of the instrumental and atmospheric conditions. Due to the similarity with holographic mapping of radio antenna surfaces, we call this extended analysis approach software holography. The resulting analysis algorithms are computationally efficient, unbiased, and optimally sensitive. We show how software holography can be used to solve some of the challenges of next generation observations, and how more familiar analysis techniques can be derived as limiting cases.

Miguel F. Morales; Michael Matejek

2008-10-28

323

Updated receiver survey system uses an infrared camera, GPS technology, and computer software to rapidly  

E-print Network

Updated receiver survey system uses an infrared camera, GPS technology, and computer software for performance issues using an infrared (IR) camera, global positioning system (GPS) technology, and computer Achievement NREL has created a receiver survey system that integrates an IR camera, GPS technology

324

Topics in Holography and Four Dimensional Superconformal Field Theories  

NASA Astrophysics Data System (ADS)

Strong dynamics in physical systems underpin a plethora of phenomena in nature. However, there had not exist many theoretical tools for probing such systems in quantum field theories until the discovery of supersymmetry and holography. In this thesis, we use these frameworks to study strongly coupled dynamics. In chapters two and three, we compute the entanglement entropy of several field theories at zero and finite temperature by using a holographic proposal. We find that the scaling of the entanglement entropy as a function of the size of the system is different in the various phases of the theory. This indicates that the entanglement entropy can be used to detect phase transitions in field theories. For all the systems we studied, we use the entanglement entropy to characterise the types of transitions present. In chapters four and five, we find consistent truncations of the fermionic sectors of M-theory and JIB superstring theory compactified on Sasaki-Einstein seven and five manifolds, respectively. The goal in these chapters is to provide string theory and M-theory embeddings of phenomenological studies of condensed matter systems in holography. We were unable to find truncations to a single fermion as is required by many models. The truncations also contain new types of couplings that were not studied in the literature. Thus we also provided motivations for new phenomenological models. In chapter six, we develop methods for constructing strongly interacting N = 1 superconformal field theories (SCFT) that contain Gaiotto's TN theories. We, then, propose the existence of many new four dimensional SCFT's. Finally in chapter seven, we study the low energy dynamics of M5-branes wrapping two dimensional Riemann surfaces inside a Calabi-Yau threefold. By using holography, we argue that the long distance physics is describe by a new class of four dimensional SCFT's. We, then, construct a set of supersymmetric field theories whose low energy limit correspond to a large subclass of these SCFT's. All of the field theories contain TN's and the constructions use tools developed in chapter six.

Bah, Ibrahima

325

Applications Of Holography In Automotive Industry  

NASA Astrophysics Data System (ADS)

This report provides a brief summary of works concerning the applications of optical holography in automative industry carried out in Central Laboratory of Optics in Warsaw, during the last ten years period. These works cover applications of holographic interferometry for nondestructive testing of engine valves, holographic investigations of pneumatic tires, double-pulse interferometry of driving gear, and holographic registration of oil mist. Holography is widelly used in different areas of modern technique [1-4] and its applications in automative industry are well known [5-7] . Those investigations have a great influence on safety aspects of automative systems, so, it is clear that currently they arouse a great interest. As a result, some investigations in this area have been stazoted out in Poland. Partially, these investigations have been carried on in Central Laboratory of Optics in cooperation with different research laboratories. Some results, obtained during last ten years period are presented in this report.

Pawiuczyk, Ramuald

1983-10-01

326

Shadowgraphic holography of simulated space debris  

NASA Astrophysics Data System (ADS)

Shadowgraphic holography allows imaging of small particles over a 180 degree field of view and with a large depth of field. The cylindrical holography technique developed by Hough and Gustafson has been modified to allow holograms of small hypervelocity impact generated simulated space debris particles to be successfully made by using a subnanosecond laser pulse length. The use of very short (135 ps) laser pulses with a corresponding short coherence length (4 cm) frees the motion of small high speed particles. With this system, shadowgraphic holograms of aluminum projectiles impacting aluminum and graphic epoxy plates have been achieved at hypervelocity. Results of these tests as well as low speed proof of concept tests are presented.

Nebolsine, Peter E.; Lo, Edmond Y.; Ferguson, R. D.; Goldey, Charles L.; Sinex, Jeffrey C.; Liquornik, David J.; Hough, Gary R.

1996-10-01

327

Self-comparative holography and shearography  

Microsoft Academic Search

Double-exposure holography and double-exposure shearography are two interferometric techniques that are particularly useful for precision measurement, and for non-destructive inspection and evaluation of the structural integrity of test objects. Quite often, objects with symmetrical deformation are tested and the challenge to the engineer is to check for symmetry in the deformation. While the holographic and shearographic fringe patterns are able

Huai M. Shang

2002-01-01

328

Electron holography of devices with epitaxial layers  

NASA Astrophysics Data System (ADS)

Applicability of electron holography to deep submicron Si devices with epitaxial layers is limited due to lack of the mean inner potential data and effects of the sample tilt. The mean inner potential V0 = 12.75 V of the intrinsic epitaxial SiGe was measured by electron holography in devices with Ge content CGe = 18%. Nanobeam electron diffraction analysis performed on the same device structure showed that SiGe is strain-free in [220] direction. Our results showed good correlation with simulations of the mean inner potential of the strain-free SiGe using density function theory. A new method is proposed in this paper to correct electron holography data for the overlap of potentials of Si and the epitaxial layer, which is caused by the sample tilt. The method was applied to the analysis of the dopant diffusion in p-Field-effect Transistor devices with the identical gate length L = 30 nm, which had alternative SiGe geometry in the source and drain regions and was subjected to different thermal processing. Results have helped to understand electrical data acquired from the same devices in terms of dopant diffusion.

Gribelyuk, M. A.; Ontalus, V.; Baumann, F. H.; Zhu, Z.; Holt, J. R.

2014-11-01

329

Acoustic holography. Citations from the Engineering Index data base  

NASA Astrophysics Data System (ADS)

Worldwide research on acoustic holography is covered. Theory, uses, equipment design, and imaging techniques are presented. Most of the studies are general and not applied to a specific use of acoustic holography. However, there are citations which do discuss its use in medicine, nuclear reactors, and nondestructive testing. This updated bibliography contains 328 citations, 34 of which are new entries to the previous edition.

Reed, W. E.

1980-07-01

330

New true-color rainbow holography of 3D object  

Microsoft Academic Search

Based on the conventional one-step true color rainbow holography, a new true color rainbow holography of 3-D diffused object is presented. By means of conjugate reconstruction with one wavelength laser, the hologram can be recorded in only one type of recording material with single exposure to achieve true color rainbow hologram. Therefore, a photoresist master can be produced for embossing

Chaochuan Jiang; Cheng Fan; Lu-Rong Guo

1992-01-01

331

New true-color rainbow holography of 3D object  

NASA Astrophysics Data System (ADS)

Based on the conventional one-step true color rainbow holography, a new true color rainbow holography of 3-D diffused object is presented. By means of conjugate reconstruction with one wavelength laser, the hologram can be recorded in only one type of recording material with single exposure to achieve true color rainbow hologram. Therefore, a photoresist master can be produced for embossing copy.

Jiang, Chaochuan; Fan, Cheng; Guo, Lurong

1992-05-01

332

COMPUTER & INFORMATION TECHNOLOGY L/R 590. Programming Languages and Techniques. (C)  

E-print Network

COMPUTER & INFORMATION TECHNOLOGY (EG) {CIT} L/R 590. Programming Languages and Techniques. (C) Introduction to fundamental concepts of programming and computer science for students who have little not have an academic background in computer science and who are not pursuing the Master's in Computer

Fang-Yen, Christopher

333

Cloud Computing Forum & Workshop III Agenda National Institute of Standards and Technology  

E-print Network

Cloud Computing Forum & Workshop III Agenda National Institute of Standards and Technology 100 of IT and Telecommunications Industries, World Economic Forum USA 9:30 ­ 10:20 Cloud Computing: Adopters' Long-term View, Panel Computing Program & Forum (10 min Q&A) Dawn Leaf, NIST Senior Executive for Cloud Computing 10:50 ­ 11

334

Underwater digital holography for studies of marine plankton.  

PubMed

Conventional and digital holographies are proving to be increasingly important for studies of marine zooplankton and other underwater biological applications. This paper reports on the use of a subsea digital holographic camera (eHoloCam) for the analysis and identification of marine organisms and other subsea particles. Unlike recording on a photographic film, a digital hologram (e-hologram) is recorded on an electronic sensor and reconstructed numerically in a computer by simulating the propagation of the optical field in space. By comparison with other imaging techniques, an e-hologram has several advantages such as three-dimensional spatial reconstruction, non-intrusive and non-destructive interrogation of the recording sampling volume and the ability to record holographic videos. The basis of much work in optics lies in Maxwell's electromagnetic theory and holography is no exception: we report here on two of the numerical reconstruction algorithms we have used to reconstruct holograms obtained using eHoloCam and how their starting point lies in Maxwell's equations. Derivation of the angular spectrum algorithm for plane waves is provided as an exact method for the in-line numerical reconstruction of digital holograms. The Fresnel numerical reconstruction algorithm is derived from the angular spectrum method. In-line holograms are numerically processed before and after reconstruction to remove periodic noise from captured images and to increase image contrast. The ability of the Fresnel integration reconstruction algorithm to extend the reconstructed volume beyond the recording sensor dimensions is also shown with a 50% extension of the reconstruction area. Finally, we present some images obtained from recent deployments of eHoloCam in the North Sea and Faeroes Channel. PMID:18222904

Sun, H; Benzie, P W; Burns, N; Hendry, D C; Player, M A; Watson, J

2008-05-28

335

Computer vision challenges and technologies for agile manufacturing  

NASA Astrophysics Data System (ADS)

Sandia National Laboratories, a Department of Energy laboratory, is responsible for maintaining the safety, security, reliability, and availability of the nuclear weapons stockpile for the United States. Because of the changing national and global political climates and inevitable budget cuts, Sandia is changing the methods and processes it has traditionally used in the product realization cycle for weapon components. Because of the increasing age of the nuclear stockpile, it is certain that the reliability of these weapons will degrade with time unless eventual action is taken to repair, requalify, or renew them. Furthermore, due to the downsizing of the DOE weapons production sites and loss of technical personnel, the new product realization process is being focused on developing and deploying advanced automation technologies in order to maintain the capability for producing new components. The goal of Sandia's technology development program is to create a product realization environment that is cost effective, has improved quality and reduced cycle time for small lot sizes. The new environment will rely less on the expertise of humans and more on intelligent systems and automation to perform the production processes. The systems will be robust in order to provide maximum flexibility and responsiveness for rapidly changing component or product mixes. An integrated enterprise will allow ready access to and use of information for effective and efficient product and process design. Concurrent engineering methods will allow a speedup of the product realization cycle, reduce costs, and dramatically lessen the dependency on creating and testing physical prototypes. Virtual manufacturing will allow production processes to be designed, integrated, and programed off-line before a piece of hardware ever moves. The overriding goal is to be able to build a large variety of new weapons parts on short notice. Many of these technologies that are being developed are also applicable to commercial production processes and applications. Computer vision will play a critical role in the new agile production environment for automation of processes such as inspection, assembly, welding, material dispensing and other process control tasks. Although there are many academic and commercial solutions that have been developed, none have had widespread adoption considering the huge potential number of applications that could benefit from this technology. The reason for this slow adoption is that the advantages of computer vision for automation can be a double-edged sword. The benefits can be lost if the vision system requires an inordinate amount of time for reprogramming by a skilled operator to account for different parts, changes in lighting conditions, background clutter, changes in optics, etc. Commercially available solutions typically require an operator to manually program the vision system with features used for the recognition. In a recent survey, we asked a number of commercial manufacturers and machine vision companies the question, 'What prevents machine vision systems from being more useful in factories?' The number one (and unanimous) response was that vision systems require too much skill to set up and program to be cost effective.

Molley, Perry A.

1996-02-01

336

Undergraduate Individual Studies Proposal Tech 180A Individual Studies in Electronics and Computer Technology  

E-print Network

Undergraduate Individual Studies Proposal Tech 180A Individual Studies in Electronics and Computer Technology Tech 180B Individual Studies in Manufacturing Technology Tech 180C Individual Studies in Materials Technology Tech 180D Individual Studies in Technology Issues Avia 180 Individual Studies (1-3 units) Avia 180

Su, Xiao

337

Holography and Art - Using rainbow hologram in my works  

NASA Astrophysics Data System (ADS)

Holography can be understood as one of the more sophisticated subjects within the realm of modern art. Even after several years of study and application, understanding Holography simply does not get any easier. For that reason, instead of trying to discuss both the technical and the artistic aspects of holography, the emphasis will strictly be on the latter. Just like any other paradigm or medium capable of fascinating the human hearts, holography has changed the way I encounter the world. Changed perception of the world brought me feelings of child-like delight. Among the various subdivisions of holography, I hold Rainbow Hologram exceptionally close to my heart. Not only is it related to my previous works but its bright, crisp and various color movements are also depicted wonderfully in 3-dimension. I would like to share my fascination with rainbow hologram with you.

Cho, Duck Hee

2013-02-01

338

Computer architectures for computational physics work done by Computational Research and Technology Branch and Advanced Computational Concepts Group  

NASA Technical Reports Server (NTRS)

Slides are reproduced that describe the importance of having high performance number crunching and graphics capability. They also indicate the types of research and development underway at Ames Research Center to ensure that, in the near term, Ames is a smart buyer and user, and in the long-term that Ames knows the best possible solutions for number crunching and graphics needs. The drivers for this research are real computational physics applications of interest to Ames and NASA. They are concerned with how to map the applications, and how to maximize the physics learned from the results of the calculations. The computer graphics activities are aimed at getting maximum information from the three-dimensional calculations by using the real time manipulation of three-dimensional data on the Silicon Graphics workstation. Work is underway on new algorithms that will permit the display of experimental results that are sparse and random, the same way that the dense and regular computed results are displayed.

1985-01-01

339

Research for current cloud computing and cloud security technology  

Microsoft Academic Search

This paper introduces the concept, development, key features, applications of cloud computing. The difference to grid computing is discussed. Eight kinds of typical open source cloud computing projects are described, the security reference models of cloud services are given. Cloud computing security challenges and countermeasures are discussed in this paper.

Chen Hongsong; Fu Zhongchuan

2010-01-01

340

Integrating knowledge-based technology into computer aided ventilation systems.  

PubMed

A knowledge-based decision support system for respirator treatment, the KUSIVAR system, has been designed in cooperation between hospital, university and industry. Changes in patient data from respirator and monitoring equipment trigger a computer program that generates advice to the staff concerning e.g. therapy modes and respirator settings using expert systems and process control technology. A prototype has been built on an advanced development workstation, the Unisys Explorer, using the software Knowledge Engineering Environment (KEE). The clinical version is implemented on an Intel 80396-based microcomputer connected on-line via a data-acquisition processor to the respirator. The decision support software is implemented as a module under the Microsoft Windows multitasking environment and communicates with modules for data acquisition, database handling and data presentation by means of message passing using the Windows Dynamic Data Exchange protocol. The modules present coherent user interfaces by conforming to Microsoft Windows standards. The knowledge base is being extensively validated by an expert group in the ICU and the system will be evaluated through animal experiments and clinical studies. PMID:2351861

Gill, H; Ludwigs, U; Matell, G; Rudowski, R; Shahsavar, N; Ström, C; Wigertz, O

1990-01-01

341

Brain–Computer Interface Technologies in the Coming Decades  

Microsoft Academic Search

As the proliferation of technology dramatically infiltrates all aspects of modern life, in many ways the world is becoming so dynamic and complex that technological capabilities are overwhelming human capabilities to optimally interact with and leverage those technologies. Fortunately, these technological advancements have also driven an explosion of neuroscience research over the past several decades, presenting engineers with a remarkable

Brent J. Lance; Scott E. Kerick; Anthony J. Ries; Kelvin S. Oie; Kaleb McDowell

2012-01-01

342

Acoustic Holography of the Solar Convection Zone with SOHO-MDI Observations  

NASA Technical Reports Server (NTRS)

The original grant with the title stated above was NAG5-10984, awarded to the Solar Physics Research Corporation (SPRC) in July, 2001, and was to be a three-year project. The basic theme of the project was the development and application of computational seismic holography for imaging, diagnostics, and monitoring of magnetic anomalies beneath active regions, in the deep solar interior, and on the Sun's far surface. The project was roughly separated into the following five tasks: (1) A holographic survey of active regions. (2) p-Mode absorption diagnostics of magnetic regions. (3) Acoustic modeling of the shallow subphotospheres of active regions and the quiet-Sun supergranulation based on phase-correlation seismic holography. (4) Seismic holography of the deep convection zone. (5) Improvements in holographic imaging of the far surface of the Sun. Following the death of Karen Harvey, President of SPRC, during the first year, the grant was transferred to Northwest Research Associates as NAG5-12901. Substantial but progress had been made on most of the above tasks in the first year under NAG5-10984, but none were completed. This work was continued under NAG5-12901.

Lindsey, Charles

2005-01-01

343

Experimental imaging research on continuous-wave terahertz in-line digital holography  

NASA Astrophysics Data System (ADS)

The terahertz (THz) imaging is an advanced technique on the basis of the unique characteristics of terahertz radiation. Due to its noncontact, non-invasive and high-resolution capabilities, it has already shown great application prospects in biomedical observation, sample measurement, and quality control. The continuous-wave terahertz in-line digital holography is a combination of terahertz technology and in-line digital holography of which the source is a continuous-wave terahertz laser. Over the past decade, many researchers used different terahertz sources and detectors to undertake experiments. In this paper, the pre-process of the hologram is accomplished after the holograms' recording process because of the negative pixels in the pyroelectric detector and the air vibration caused by the chopper inside the camera. To improve the quality of images, the phase retrieval algorithm is applied to eliminate the twin images. In the experiment, the pin which terahertz wave can't penetrate and the TPX slice carved letters "THz" are chosen for the samples. The amplitude and phase images of samples are obtained and the twin image and noise in the reconstructed images are suppressed. The results validate the feasibility of the terahertz in-line digital holographic imaging technique. This work also shows the terahertz in-line digital holography technique's prospects in materials science and biological samples' detection.

Huang, Haochong; Wang, Dayong; Rong, Lu; Wang, Yunxin

2014-09-01

344

Non-invasive monitoring for living cell culture with lensless Fourier transform digital holography microscopy  

NASA Astrophysics Data System (ADS)

The number of cells is commonly employed to describe the cell viability and the status of cell culture in a certain extent. An automatic and non-invasive detecting method for the status analysis of cell culture is developed based on digital holography microscopy (DHM) technology. Digital holographic imaging can retrieve quantitative information of object wavefront by the numerical reconstruction from a single digital hologram recorded by a detector such as CCD or CMOS camera, which is especially suitable for the morphology detection of the transparent or semi-transparent cells. In this contribution, the lensless Fourier transform (LFT) based holography configuration is designed for cell imaging without prestaining, and the amplitude and phase of living cells can be reconstructed by digital reconstruction and phase unwrapped algorithms. Then the image filtering and segmentation are combined for the automatic evaluation of the level of confluency. In imaging experiments, the culture status of the cervical cancer cell TZMbl is detected, and the results demonstrate that digital holography microscopy provides a feasible non-invasive method for monitoring the living cell culture.

Wang, Yunxin; Wang, Dayong; Zhao, Jie; Li, Yan; Meng, Puhui; Wan, Yuhong; Jiang, Zhuqing

2010-08-01

345

Social Studies: Application Units. Course II, Teachers. Computer-Oriented Curriculum. REACT (Relevant Educational Applications of Computer Technology).  

ERIC Educational Resources Information Center

This book is one of a series in Course II of the Relevant Educational Applications of Computer Technology (REACT) Project. It is designed to point out to teachers two of the major applications of computers in the social sciences: simulation and data analysis. The first section contains a variety of simulation units organized under the following…

Tecnica Education Corp., San Carlos, CA.

346

Grid Computing: A New Technology for the Advanced Web  

Microsoft Academic Search

The aim of our Grid Computing team at Sun is to take Cluster and Grid computing onto the next level of widest acceptance.\\u000a For this purpose, we present a three-tier Grid architecture which relates to an intuitive model, including Cluster, Campus\\u000a and Global Grids, which allows users to embrace Grid Computing starting with their current compute clusters, and moving to

Wolfgang Gentzsch

2001-01-01

347

THE GRAIN OF XENAKIS' TECHNOLOGICAL THOUGHT IN THE COMPUTER MUSIC RESEARCH OF OUR DAYS  

Microsoft Academic Search

The scope of this article is to present the diachronic value of Xenakis' technological thought in computer music research and creation of our days within a comparative and critical approach. On the one hand, we will refer to the main domains of Xenakis' contributions to Music Technology: the conquest of the computer as a tool for logical transformations of symbols

Anastasia Georgaki

348

Characteristic Specialty Construction Research of Computer Science and Technology of Applied Undergraduate Colleges and Universities  

Microsoft Academic Search

The research focuses on how to improve the employment rate of the computer science and technology major graduates. The paper first described why the employment of this major was low by carried on the thorough investigation and analysis. Then it described the feasibility construction scheme of computer science and technology characteristic major of Xuchang University which is an applied college.

Huiyang Zhao; Shuang Wang

2011-01-01

349

Computer and Technology Assisted Language Arts Activities for Middle School Students  

Microsoft Academic Search

Educational research indicates that integrating computers and other technologies into the curriculum, enhances student interest in learning. However, many teachers disregard these tools citing lack of time, equipment, or experience. Based on this information, the researcher designed a project which uses computers and other technologies to stimulate middle school language arts students' interest in learning. An initial survey of 166

Catherine A Mullan

1991-01-01

350

A Survey of Factors Which Influence Teachers' Use of Computer-Based Technology.  

ERIC Educational Resources Information Center

Describes a study of the factors that influence elementary and secondary school teachers' use of computer-based technology. It is based on inconsistencies in previous studies, areas not addressed before, and the changes in computer-based technology and Internet access using Web browsers. Results indicate the importance of classroom access to…

Jaber, William E.; Moore, David M.

1999-01-01

351

The Role of Computer Technology in Teaching Reading and Writing: Preschool Teachers' Beliefs and Practices  

Microsoft Academic Search

This study investigated preschool teachers' beliefs and practices regarding the use of computer technology in teaching reading and writing in Jordan. The researcher developed a questionnaire consisting of two scales—Teachers' Beliefs Scale (TB Scale) and Teachers' Practices Scale (TP Scale)—to examine the role of computer technology in teaching reading and writing to preschoolers. A random sample of 154 preschool teachers

Fathi Ihmeideh

2009-01-01

352

A Meta-Analysis of Effectiveness Studies on Computer Technology-Supported Language Learning  

ERIC Educational Resources Information Center

With the aim of summarizing years of research comparing pedagogies for second/foreign language teaching supported with computer technology and pedagogy not-supported by computer technology, a meta-analysis was conducted of empirical research investigating language outcomes. Thirty-seven studies yielding 52 effect sizes were included, following a…

Grgurovic, Maja; Chapelle, Carol A.; Shelley, Mack C.

2013-01-01

353

Roadmap: Electrical/Electronic Engineering Technology Computer Associate of Applied Science  

E-print Network

Roadmap: Electrical/Electronic Engineering Technology ­ Computer ­ Associate of Applied Science [RE.000 #12;Roadmap: Electrical/Electronic Engineering Technology ­ Computer ­ Associate of Applied Science-AAS-EEET-CMPR] Regional College Catalog Year: 2013-2014 Page 1 of 2 | Last Updated: 13-May-13/LNHD This roadmap

Khan, Javed I.

354

A Rubber Band Ethics Model for Computing and Information Technology Practices  

Microsoft Academic Search

An innovative model for analyzing and describing the role of ethics and the manner in which it is applied in the general field of information technology is presented. Current practices and existing behavior rules that are related to economical and social issues are discussed with specific reference to computing technologies such as the internet. A theoretical model for computing and

Mahmoud Iskandarani; Ghaleb El-Refae; Shorouq F. El-Etter

2006-01-01

355

2013-2014 SPECIALTY JOB LISTS Computer/Information Technology Job List  

E-print Network

2013-2014 SPECIALTY JOB LISTS Computer/Information Technology Job List Establishing Eligibility an offer of FWSP funds on your financial aid award letter. Applying for Computer/Information Technology if contact information is provided. · Accept a job offer, and establish a work schedule and start date

356

University Students and Ethics of Computer Technology Usage: Human Resource Development  

ERIC Educational Resources Information Center

The primary purpose of this study was to determine the level of students' awareness about computer technology ethics at the Hashemite University in Jordan. A total of 180 university students participated in the study by completing the questionnaire designed by the researchers, named the Computer Technology Ethics Questionnaire (CTEQ). Results…

Iyadat, Waleed; Iyadat, Yousef; Ashour, Rateb; Khasawneh, Samer

2012-01-01

357

Tech-Prep Competency Profiles within the Business/Computer Technologies.  

ERIC Educational Resources Information Center

This document, which is designed for educators throughout Ohio who are involved in planning and/or delivering tech prep programs within the business/computer technologies cluster, discusses and presents tech prep competency profiles (TCPs) for 12 business/computer technology occupations. The first part of the document contains the following:…

Ohio State Univ., Columbus. Center on Education and Training for Employment.

358

The Use of Computer Software to Teach High Technology Skills to Vocational Students.  

ERIC Educational Resources Information Center

A study examined the type of computer software that is best suited to teach high technology skills to vocational students. During the study, 50 manufacturers of computer software and hardware were sent questionnaires designed to gather data concerning their recommendations in regard to: software to teach high technology skills to vocational…

Farmer, Edgar I.

359

Computer Technology in Rural Schools: The Case of Mendocino County.  

ERIC Educational Resources Information Center

The county education office of Mendocino County, California, serving nine school districts and 11,800 elementary and secondary students, began planning for computers in 1979-1980, purchased two central computers, and by 1983 had one computer or terminal for every 40 students in the county. The county was characterized by its very enthusiastic…

Hoachlander, E. Gareth

360

Using the computer as a tool in engineering technology programs  

Microsoft Academic Search

Computers are becoming increasingly important tools in engineering as the pressure to produce world class products in the United States expands. Computers are revolutionizing the way engineers “do” engineering. Concepts such as concurrent engineering, solids modeling, design for manufacturability and assembly, statistical process control, total quality management, injection molding simulation and finite element analysis all use the computer to assist

Kathleen L. Kitto

1994-01-01

361

Making Advanced Computer Science Topics More Accessible through Interactive Technologies  

ERIC Educational Resources Information Center

Purpose: Teaching advanced technical concepts in a computer science program to students of different technical backgrounds presents many challenges. The purpose of this paper is to present a detailed experimental pedagogy in teaching advanced computer science topics, such as computer networking, telecommunications and data structures using…

Shao, Kun; Maher, Peter

2012-01-01

362

Fulfilling the promise of the personal computer : the development of accessible computer technologies, 1970-1998  

E-print Network

From this time onward, poor computer sales industry wide andby ending the sale of Apple computers directly through theComputer was founded in 1976 by Steve Jobs and Stephen Wozniak, with the creation and sale

Petrick, Elizabeth

2012-01-01

363

Grace Hopper Celebration Final Submission Materials Ripple Effects: Increasing the Diversity of Creators and Consumers of Computing Technology  

E-print Network

computing technology to date. This panel will focus on our newest "wave" of efforts to increase diversity of Creators and Consumers of Computing Technology ABSTRACT Despite major advances in computing technology and initial adoptions of this technology around the world, many developing communities have not benefited from

Lavie, Alon

364

The holography of F -maximization  

NASA Astrophysics Data System (ADS)

We find new supersymmetric backgrounds of = 8 gauged supergravity in four Euclidean dimensions that are dual to deformations of ABJM theory on S 3. The deformations encode the most general choice of U(1) R symmetry used to define the theory on S 3. We work within an = 2 truncation of the = 8 supergravity theory obtained via a group theory argument. We find perfect agreement between the S 3 free energy computed from our supergravity backgrounds and the previous field theory computations of the same quantity based on supersymmetric localization and matrix model techniques.

Freedman, Daniel Z.; Pufu, Silviu S.

2014-03-01

365

Ethereal presences in holography and photography  

NASA Astrophysics Data System (ADS)

This paper examines the concept of the 'Presence of Absence' in post-mortem photography and holography, drawing upon both historical and lesser-known images as reference. To create a photographic negative one needs the presence of light to expose the light sensitive surface, be it glass, a polished plate or plastic. A hologram may also be created when a coherent light source, for example from a Laser, travels through a light sensitive material and falls upon the subject to be recorded. A holograph however, retains the optical qualities of both phase and amplitude, the memory of light. Both mediums recall, as it were, 'now absent moments', and confronts us with what is 'not there' as much as 'what is'. This paper examines the exploration of absence and presence in post-mortem photography and holography and it's a richly visceral visual language. A photonic syntax can interpret death as an elegant yet horrific aesthetic, the photograph may be beautify screened and yet obscene in its content. In essence one can be a voyeur, experiencing a mere visual whisper of the true nature of the subject. Our Victorian forefathers explored postmortem photography as an object of mourning, and at the close of the nineteenth century when Jack the Ripper had the inhabitants of White Chapel in a grip of fear, photography made its mark as a documentation of violent crime. Today, within contemporary photography, death is now presented within the confines of the 'Art Gallery', as a sensual, and at times, sensationalised art form. In exploring post-mortem imagery, both in holography and conventional photography, absence presents an aspect of death as startling in its unanimated form and detailed in its finite examination of mortality.

Richardson, M.; Byrne, Kay

2007-02-01

366

Understanding Pre-Service Teachers' Computer Attitudes: Applying and Extending the Technology Acceptance Model  

ERIC Educational Resources Information Center

Computers are increasingly widespread, influencing many aspects of our social and work lives. As we move into a technology-based society, it is important that classroom experiences with computers are made available for all students. The purpose of this study is to examine pre-service teachers' attitudes towards computers. This study extends the…

Teo, T.; Lee, C. B.; Chai, C. S.

2008-01-01

367

Advanced Adoption of Computer Technology in the Classroom and Teachers' Participation in Voluntary Innovation Adoption Activities.  

ERIC Educational Resources Information Center

A case study was conducted to seek improved understanding of processes related to teachers' adoption of two classroom-based computer technologies--networked computer-assisted instruction (CAI) and desktop computer multimedia resources--at a selected magnet elementary school. A Stages of Concern Questionnaire was used to gather quantitative data,…

Wesley, Marion T., Jr.; Franks, Melvin Eugene

368

AHaH computing with thermodynamic RAM: bridging the technology stack  

NASA Astrophysics Data System (ADS)

We introduce the motivations behind AHaH computing, an emerging new form of adaptive computing with many applications in machine learning. We then present a technology stack or specification describing the multiple levels of abstraction and specialization needed to support AHaH computing.

Nugent, Alex

2014-05-01

369

National Institute of Standards and Technology (NIST) Cloud Computing Forum & Workshop Agenda  

E-print Network

National Institute of Standards and Technology (NIST) Cloud Computing Forum & Workshop Agenda U: Director, NIST, Dr. Patrick Gallagher Overview of NIST mission and role in the context of Cloud Computing 9 government with respect to Cloud Computing 10:00 Break (main lobby) 10:20 Industry Panel: co-chairs William

370

Examining the Relationship between Technological, Organizational, and Environmental Factors and Cloud Computing Adoption  

ERIC Educational Resources Information Center

High uncertainties related to cloud computing adoption may hinder IT managers from making solid decisions about adopting cloud computing. The problem addressed in this study was the lack of understanding of the relationship between factors related to the adoption of cloud computing and IT managers' interest in adopting this technology. In…

Tweel, Abdeneaser

2012-01-01

371

Computer-Related Assistive Technology: Satisfaction and Experiences among Users with Disabilities  

ERIC Educational Resources Information Center

Many people with disabilities use assistive technology devices (ATDs) for computer access. The specific focus of this exploratory study was (a) to assess the experiences, opinions, and satisfaction levels of 24 individuals with disabilities using computer-related ATDs; (b) to investigate their awareness of health risk factors related to computer

Burton, Mary; Nieuwenhuijsen, Els R.; Epstein, Marcy J.

2008-01-01

372

Color reflection holography using four recording wavelengths  

NASA Astrophysics Data System (ADS)

We present a theoretical analysis of color reflection holography using four recording wavelengths. The color reproduction of the hologram is discussed using the 1976 CIE chromaticity diagram. The optimum combination of the four wavelengths which minimizes the distance between the reconstructed image and the object points is calculated using nonlinear least square method. It is found that the extremely good color reproduction can be achieved by four- wavelength recording. We also analyze the color reproduction for the four practical laser wavelengths. The optimum choice of the wavelengths and the attainable color reproduction are discussed.

Kubota, Toshihiro; Takabayashi, Emi; Kashiwagi, Tsuyoshi; Watanabe, Masachika; Ueda, Kenji

2001-06-01

373

"Kunstwerk" in the age of holography  

NASA Astrophysics Data System (ADS)

In 2007 one auction shocked collectors and artists: Two art works of Rudie Berkhout were offered for one thousand dollars on eBay. The closing down of museums for holography in Cologne, New York and Washington DC paid a big price of respect for true art. Benjamin's vision about "Art in the Age of Mechanical Reproduction" found a new expression in abuse and ignorance. Beautiful sculptures of Art are reduced to "Holograms" like Rudie's "Cairo Aspect" placed in a rummage sale, covered by fingerprints of ignorance.

Öhlmann, Dietmar; Meulien Ohlmann, Odile

2013-02-01

374

Results and further experiments using Spacelab holography  

NASA Technical Reports Server (NTRS)

Spacelab 3 provided the platform for the first extensive application of holography in space. Holograms of excellent quality were recorded during the flight, providing information on the solution growth of triglycine sulfate crystals under microgravity conditions. The suppression of convection and the development of a symmetric concentration-depletion region around each crystal were clearly shown. Crystal growth was governed by diffusion mass transport across the depletion region. The successful performance of the holographic unit has prompted NASA to schedule a slightly modified version for reflight on IML-1; opportunities now exist for other investigators to use this facility.

Owen, R. B.; Kroes, R. L.; Witherow, W. K.

1986-01-01

375

Three-dimensional nonlinear acoustical holography  

NASA Astrophysics Data System (ADS)

Nearfield Acoustical Holography (NAH) is an acoustic field visualization technique that can be used to reconstruct three-dimensional (3-D) acoustic fields by projecting two-dimensional (2-D) data measured on a hologram surface. However, linear NAH algorithms developed and improved by many researchers can result in significant reconstruction errors when they are applied to reconstruct 3-D acoustic fields that are radiated from a high-level noise source and include significant nonlinear components. Here, planar, nonlinear acoustical holography procedures are developed that can be used to reconstruct 3-D, nonlinear acoustic fields radiated from a high-level noise source based on 2-D acoustic pressure data measured on a hologram surface. The first nonlinear acoustic holography procedure is derived for reconstructing steady-state acoustic pressure fields by applying perturbation and renormalization methods to nonlinear, dissipative, pressure-based Westervelt Wave Equation (WWE). The nonlinear acoustic pressure fields radiated from a high-level pulsating sphere and an infinite-size, vibrating panel are used to validate this procedure. Although the WWE-based algorithm is successfully validated by those two numerical simulations, it still has several limitations: (1) Only the fundamental frequency and its second harmonic nonlinear components can be reconstructed; (2) the application of this algorithm is limited to mono-frequency source cases; (3) the effects of bent wave rays caused by transverse particle velocities are not included; (4) only acoustic pressure fields can be reconstructed. In order to address the limitations of the steady-state, WWE-based procedure, a transient, planar, nonlinear acoustic holography algorithm is developed that can be used to reconstruct 3-D nonlinear acoustic pressure and particle velocity fields. This procedure is based on Kuznetsov Wave Equation (KWE) that is directly solved by using temporal and spatial Fourier Transforms. When compared to the WWE-based procedure, the KWE-based procedure can be applied to multi-frequency source cases where each frequency component can contain both linear and nonlinear components. The effects of nonlinear bent wave rays can be also considered by using this algorithm. The KWE-based procedure is validated by conducting an experiment with a compression driver and four numerical simulations. The numerical and experimental results show that holographically-projected acoustic fields match well with directly-calculated and directly-measured fields.

Niu, Yaying

376

Living human face measurements using pulsed holography  

NASA Astrophysics Data System (ADS)

A method to measure precisely the 2D portrait of patients undergoing maxillofacial surgery based on holography is presented. We record holograms of patients with a pulsed Nd:YLF laser system on high resolution photographic glass plates. These images contain the 3D spatial information which, due to the extremely short recording time, is not affected at all by involuntary movements. The reconstructed real image of the hologram is sliced into a series of 2D projections by means of a screen. A first approach to reconstruct the patient's 3D surface information from the captured data set is presented.

Bongartz, Jens; Giel, Dominik M.; Hering, Peter

2000-10-01

377

Electron holography for fields in solids: problems and progress.  

PubMed

Electron holography initially was invented by Dennis Gabor for solving the problems raised by the aberrations of electron lenses in Transmission Electron Microscopy. Nowadays, after hardware correction of aberrations allows true atomic resolution of the structure, for comprehensive understanding of solids, determination of electric and magnetic nanofields is the most challenging task. Since fields are phase objects in the TEM, electron holography is the unrivaled method of choice. After more than 40 years of experimental realization and steady improvement, holography is increasingly contributing to these highly sophisticated and essential questions in materials science, as well to the understanding of electron waves and their interaction with matter. PMID:23831133

Lichte, Hannes; Börrnert, Felix; Lenk, Andreas; Lubk, Axel; Röder, Falk; Sickmann, Jan; Sturm, Sebastian; Vogel, Karin; Wolf, Daniel

2013-11-01

378

Fulfilling the promise of the personal computer : the development of accessible computer technologies, 1970-1998  

E-print Network

needed help with technology, the Kids on Keyboards programTechnology Oral History Project. ” Tedeschi, “Apple Pulls Plug on Sick Kids'technology—in spite of some of the problems with it—is enabling. I see young kids

Petrick, Elizabeth

2012-01-01

379

Fulfilling the promise of the personal computer : the development of accessible computer technologies, 1970-1998  

E-print Network

technology has the potential to augment both human intelligence andhigh technology that required certain kinds of intelligenceintelligence and provide new ways for users to interact with the world. From science and technology

Petrick, Elizabeth

2012-01-01

380

Adoption of Computer Aided Software Engineering (CASE) Technology: An Innovation Adoption Perspective  

Microsoft Academic Search

This study examines the impact of various organizational and technology characteristics on the adoption of computer aided software engineering (CASE) technology. Based on research in innovation adoption and IS implementation, the study develops a research model comprised of seven factors that are important for the successful adoption of CASE technology. The data for the study were collected through a field

G. Premkumar; Michael Potter

1995-01-01

381

Abstract--Rapid advances in wireless communications and networking technologies, linked with advances in computing  

E-print Network

Abstract-- Rapid advances in wireless communications and networking technologies, linked with advances in computing and medical technologies facilitate the development and offering of emerging mobile was made possible due to the recent advances in wireless and network technologies, linked with recent

Pitsillides, Andreas

382

Technology in Spiritual Formation: An Exploratory Study of Computer Mediated Religious Communications  

E-print Network

Technology in Spiritual Formation: An Exploratory Study of Computer Mediated Religious of Technology 85 Fifth Street NW Atlanta Georgia 30308 {spwyche, gillian, beki}@cc.gatech.edu *Georgia Gwinnett report findings from a study of American Christian ministers' uses of technologies in religious practices

Hayes, Gillian R.

383

The Technology Fix: The Promise and Reality of Computers in Our Schools  

ERIC Educational Resources Information Center

During the technology boom of the 1980s and 1990s, computers seemed set to revolutionize education. Do any of these promises sound familiar? (1) Technology would help all students learn better, thanks to multimedia programs capable of adapting to individual needs, learning styles, and skill levels; (2) Technology would transform the teacher's role…

Pflaum, William D.

2004-01-01

384

A Computer-Assisted Approach for Conducting Information Technology Applied Instructions  

ERIC Educational Resources Information Center

The growing popularity of computer and network technologies has attracted researchers to investigate the strategies and the effects of information technology applied instructions. Previous research has not only demonstrated the benefits of applying information technologies to the learning process, but has also revealed the difficulty of applying…

Chu, Hui-Chun; Hwang, Gwo-Jen; Tsai, Pei Jin; Yang, Tzu-Chi

2009-01-01

385

Finding a Balance: Computer Software, Intellectual Property and the Challenge of Technological Change.  

ERIC Educational Resources Information Center

This report, prepared by the Office of Technological Assessment (OTA) in response to a request from the House Committee on the Judiciary, examines the rapid and complex technological changes and trends in computer software technologies and their possible effects on the nation's intellectual property system. The three policy issues identified are:…

Congress of the U.S., Washington, DC. Office of Technology Assessment.

386

DEFACTO: A Design Environment for Adaptive Computing Technology  

Microsoft Academic Search

The lack of high-level design tools hampers the widespread adoption of adaptive computing systems. Application developers have to master a wide range of functions, from the high-level architecture design, to the timing of actual control and data signals. These systems are extremely cumbersome and error-prone, making it difficult for adaptive computing to enter mainstream computing. In this paper we describe

Kiran Bondalapatit; Pedro C. Diniz; Phillip Duncanw; John J. Granacki; Mary W. Hall; Rajeev JainS; Heidi E. Ziegler

1999-01-01

387

Workshop on Language Technologies and Computational Social Science  

E-print Network

expert Ed Chi, sociolinguist Sali Tagliamonte, and computational linguists Lillian Lee and Philip Resnik, Stanford University Lillian Lee, Cornell University Philip Resnik, University of Maryland Sali Tagliamonte

388

Important Cultural Properties Recorded By Means Of Holography  

NASA Astrophysics Data System (ADS)

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

Katsuma, Hidetoshi; Sato, Koki

1987-01-01

389

Light-Front Holography and Novel Effects in QCD  

SciTech Connect

The correspondence between theories in anti-de Sitter space and conformal field theories in physical space-time leads to an analytic, semiclassical model for strongly-coupled QCD. Light-front holography allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. We identify the AdS coordinate z with an invariant light-front coordinate {zeta} which separates the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single-variable light-front Schroedinger equation for QCD which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The mapping of electromagnetic and gravitational form factors in AdS space to their corresponding expressions in light-front theory confirms this correspondence. Some novel features of QCD are discussed, including the consequences of confinement for quark and gluon condensates and the behavior of the QCD coupling in the infrared. The distinction between static structure functions such as the probability distributions computed from the square of the light-front wavefunctions versus dynamical structure functions which include the effects of rescattering is emphasized. A new method for computing the hadronization of quark and gluon jets at the amplitude level, an event amplitude generator, is outlined.

Brodsky, Stanley J. [SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309 (United States); Teramond, Guy F. de [Universidad de Costa Rica, San Jose (Costa Rica)

2009-04-20

390

Ethical and Professional Issues with Computer-Related Technology  

ERIC Educational Resources Information Center

School psychologists have an ethical imperative to determine the ways computers can facilitate practice because of the potential to improve effectiveness and efficiency. At the same time, psychologists have a parallel imperative to consider carefully ethical and professional practice implications. The aspects of computers that render them most…

Harvey, Virginia Smith; Carlson, Janet F.

2003-01-01

391

Internet and Computer Technology Hazards: Perspectives for Family Counselling.  

ERIC Educational Resources Information Center

Explores the social construction of the various computer hazards that households are encountering, such as computer addiction and children's access to on-line pornography. Discusses these issues in terms of constructivist counseling perspectives that are sensitive to cultural and environmental contexts. Outlines specific strategies for countering…

Oravec, Jo Ann

2000-01-01

392

Autonomic computing technologies for cyber-physical systems  

Microsoft Academic Search

Cyber-physical systems (CPS) are characterized by extremely tight integration of and coordination between computational and physical resources. Embedded computers and networks in the cyber world monitor and control the physical world. But it is impossible to make systems suitable to all situations because the physical world has much uncertainty and uncontrollable condition. The interactive mechanism between the cyber world and

Ingeol Chun; Wontae Kim; Woochun Kang; Haeyoung Lee

2010-01-01

393

ENHANCED COMPUTATIONAL HVAC SIMULATIONS USING SOFTWARE AGENT TECHNOLOGY  

Microsoft Academic Search

In this paper we present HVAC simulations based on an interactive software prototype for fluid flow problems in civil engineering including optimization of an HVAC system by Computational Steering, high performance computing, efficient methods for model transfers (e.g. automatic grid generation) and high-level control functions for the design process. With this prototype, engineers of different disciplines can locally or globally

Torsten Fahrig; Manfred Krafczyk; Bjørn Nachtwey; Jonas Tölke

394

Attitudes of Female Faculty toward the Use of Computer Technologies and the Barriers that Limit Their Use of Technologies in Girls' Colleges in Saudi Arabia  

ERIC Educational Resources Information Center

The purpose of this study was to examine female faculty members' use of computer technologies, their attitudes toward computers, the factors that best predict their attitudes toward computers, and the barriers that limit their use of computer technologies in girls' colleges in Dammam and Jubail, Saudi Arabia. Also, this study examined how female…

Almuqayteeb, Taghreed Abdulaziz

2009-01-01

395

Spin-transfer torque magnetoresistive random-access memory technologies for normally off computing (invited)  

NASA Astrophysics Data System (ADS)

Most parts of present computer systems are made of volatile devices, and the power to supply them to avoid information loss causes huge energy losses. We can eliminate this meaningless energy loss by utilizing the non-volatile function of advanced spin-transfer torque magnetoresistive random-access memory (STT-MRAM) technology and create a new type of computer, i.e., normally off computers. Critical tasks to achieve normally off computers are implementations of STT-MRAM technologies in the main memory and low-level cache memories. STT-MRAM technology for applications to the main memory has been successfully developed by using perpendicular STT-MRAMs, and faster STT-MRAM technologies for applications to the cache memory are now being developed. The present status of STT-MRAMs and challenges that remain for normally off computers are discussed.

Ando, K.; Fujita, S.; Ito, J.; Yuasa, S.; Suzuki, Y.; Nakatani, Y.; Miyazaki, T.; Yoda, H.

2014-05-01

396

Applicability of Time-Averaged Holography for Micro-Electro-Mechanical System Performing Non-Linear Oscillations  

PubMed Central

Optical investigation of movable microsystem components using time-averaged holography is investigated in this paper. It is shown that even a harmonic excitation of a non-linear microsystem may result in an unpredictable chaotic motion. Analytical results between parameters of the chaotic oscillations and the formation of time-averaged fringes provide a deeper insight into computational and experimental interpretation of time-averaged MEMS holograms. PMID:24451467

Palevicius, Paulius; Ragulskis, Minvydas; Palevicius, Arvydas; Ostasevicius, Vytautas

2014-01-01

397

Applicability of time-averaged holography for micro-electro-mechanical system performing non-linear oscillations.  

PubMed

Optical investigation of movable microsystem components using time-averaged holography is investigated in this paper. It is shown that even a harmonic excitation of a non-linear microsystem may result in an unpredictable chaotic motion. Analytical results between parameters of the chaotic oscillations and the formation of time-averaged fringes provide a deeper insight into computational and experimental interpretation of time-averaged MEMS holograms. PMID:24451467

Palevicius, Paulius; Ragulskis, Minvydas; Palevicius, Arvydas; Ostasevicius, Vytautas

2014-01-01

398

Critical Engagement with Technology in the Computer Classroom.  

ERIC Educational Resources Information Center

Proposes a model for critically engaging technology in technical communication graduate curricula. Suggests that technical communicators have an ethical as well as intellectual responsibility to engage the interface between technology and culture. Describes one example, a graduate class in information architecture, as a model for engaging the…

Salvo, Michael J.

2002-01-01

399

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven, The Netherlands ISSN: 0926-4507 #12.M. Burgerscentrum, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands; and International) to represent the density of the marine cyanobacterium Synechococcus [3] under conditions of abundant nutrients

Eindhoven, Technische Universiteit

400

BI Vignettes: Computer Technology: Pandora's Box or Toolbox?  

ERIC Educational Resources Information Center

Describes the concept behind the Technology Toolbox, a method being explored at Augustana College to build a foundation of basic information technology skills among students and faculty members. The materials and potential applications are examined and several issues related to this new form of instruction are discussed. (Author/KRN)

Davidson, Jeanne R.

1994-01-01

401

Nonrelativistic Holography — a Group-Theoretical Perspective  

NASA Astrophysics Data System (ADS)

We give a review of some group-theoretical results related to nonrelativistic holography. Our main playgrounds are the Schrödinger equation and the Schrödinger algebra. We first recall the interpretation of nonrelativistic holography as equivalence between representations of the Schrödinger algebra describing bulk fields and boundary fields. One important result is the explicit construction of the boundary-to-bulk operators in the framework of representation theory, and that these operators and the bulk-to-boundary operators are intertwining operators. Further, we recall the fact that there is a hierarchy of equations on the boundary, invariant with respect to Schrödinger algebra. We also review the explicit construction of an analogous hierarchy of invariant equations in the bulk, and that the two hierarchies are equivalent via the bulk-to-boundary intertwining operators. The derivation of these hierarchies uses a mechanism introduced first for semisimple Lie groups and adapted to the nonsemisimple Schrödinger algebra. These require development of the representation theory of the Schrödinger algebra which is reviewed in some detail. We also recall the q-deformation of the Schrödinger algebra. Finally, the realization of the Schrödinger algebra via difference operators is reviewed.

Dobrev, V. K.

2014-02-01

402

Acoustic emission linear pulse holography  

DOEpatents

Defects in a structure are imaged as they propagate, using their emitted acoustic energy as a monitored source. Short bursts of acoustic energy propagate through the structure to a discrete element receiver array. A reference timing transducer located between the array and the inspection zone initiates a series of time-of-flight measurements. A resulting series of time-of-flight measurements are then treated as aperture data and are transferred to a computer for reconstruction of a synthetic linear holographic image. The images can be displayed and stored as a record of defect growth.

Collins, H. Dale (Richland, WA); Busse, Lawrence J. (Richland, WA); Lemon, Douglas K. (West Richland, WA)

1985-01-01

403

Acoustic emission linear pulse holography  

SciTech Connect

Defects in a structure are imaged as they propagate, using their emitted acoustic energy as a monitored source. Short bursts of acoustic energy propagate through the structure to a discrete element receiver array. A reference timing transducer located between the array and the inspection zone initiates a series of time-of-flight measurements. A resulting series of time-of-flight measurements are then treated as aperture data and are transferred to a computer for reconstruction of a synthetic linear holographic image. The images can be displayed and stored as a record of defect growth.

Collins, H. D.; Busse, L. J.; Lemon, D. K.

1985-07-30

404

Holography for N = 2[superscript *] on S[superscript 4  

E-print Network

We find the gravity dual of N = 2[superscript *] super-Yang-Mills theory on S [superscript 4] and use holography to calculate the universal contribution to the corresponding S [superscript 4] free energy at large N and ...

Bobev, Nikolay

405

Robust phase-shift estimation method for statistical generalized phase-shifting digital holography.  

PubMed

We propose a robust phase-shift estimation method for statistical generalized phase-shifting digital holography using a slightly off-axis optical configuration. The phase randomness condition in the Fresnel diffraction field of an object can be sufficiently established by the linear phase factor of the oblique incident reference wave. Signed phase-shift values can be estimated with a statistical approach regardless of the statistical properties of the Fresnel diffraction field of the object. We present computer simulations and optical experiments to verify the proposed method. PMID:24977514

Yoshikawa, Nobukazu; Shiratori, Takaaki; Kajihara, Kazuki

2014-06-16

406

Selectable-wavelength low-coherence digital holography with chromatic phase shifter.  

PubMed

We propose a new digital holography method using an ultra-broadband light source and a chromatic phase-shifter. The chromatic phase-shifter gives different frequency shifts for respective spectral frequencies so that the spectrum of the light reflected from the object can be measured to reveal the spectral property of the object, and arbitrary selection of signals in the temporal frequency domain enables single- and multi-wavelength measurements with wide dynamic range. A theoretical analysis, computer simulations, and optical experiments were performed to verify the advantages of the proposed method. PMID:23037027

Pham, Quang Duc; Hasegawa, Satoshi; Kiire, Tomohiro; Barada, Daisuke; Yatagai, Toyohiko; Hayasaki, Yoshio

2012-08-27

407

Landau Levels, Anisotropy and Holography  

E-print Network

We analyze properties of field theories dual to extremal black branes in (4+1) dimensions with anisotropic near-horizon geometries. Such gravity solutions were recently shown to fall into nine classes which align with the Bianchi classification of real three-dimensional Lie algebras. As a warmup we compute constraints on critical exponents from energy conditions in the bulk and scalar two point functions for a general type I metric, which has translation invariance but broken rotations. We also comment on the divergent nature of tidal forces in general Bianchi-type metrics. Then we come to our main focus: extremal branes whose near-horizon isometries are those of the Heisenberg algebra (type II). We find hyperscaling-violating solutions with type II isometries in (4+1)-dimensions. We show that scale invariant (4+1)-dimensional type II metrics are related by Kaluza-Klein reduction to more symmetric $AdS_2\\times R^2$ and (3+1)-dimensional hyperscaling-violating spacetimes. These solutions generically have $\\theta \\leq 0$. We discuss how one can obtain flows from UV CFTs to Bianchi-type spacetimes in the IR via the Higgs mechanism, as well as potential inhomogeneous instabilities of type II. Finally, we compute two-point functions of massive and massless scalar operators in the dual field theory and find that they exhibit the behavior of a theory with Landau levels.

Sarah Harrison

2013-06-13

408

Exploring Secondary Agriscience Teachers' and Students' Use, Attitude Toward, Knowledge and Perceptions of Computers and Technology Tools  

E-print Network

Computers are an ever changing facet of everyday life; almost all businesses, including schools, are dependent on technology, from research to information delivery. With the rapid advances in computer technology made every year combined...

Miller, Kimberley Ann

2012-07-16

409

Applications of Holography in Fluid Mechanics and Particle Dynamics  

Microsoft Academic Search

The quantification of three-dimensional (3D) flow structures and particle dynamics is crucial for unveiling complex interactions in turbulent flows. This review summarizes recent advances in volumetric particle detection and 3D flow velocimetry involving holography. We introduce the fundamental principle of holography and discuss the debilitating depth-of-focus problem, along with methods that have been implemented to circumvent it. The focus of

Joseph Katz; Jian Sheng

2010-01-01

410

Pulsed TV-holography recording for vibration analysis applications  

Microsoft Academic Search

TV-holography is a well-known tool for vibration analysis. Using the so-called time-average method, this technique allows to record interferograms showing the mode shapes of a structure submitted to vibration excitation and is currently used for modal identification.Within the frames of a BRITE-EURAM program called vibration intensity processing using full-field multi-pulse laser technique (VIP), a TV-holography equipment has been developed, working

Jean-Pierre Chambard; Vincent Chalvidan; Xavier Carniel; Jean-Claude Pascal

2002-01-01

411

Fulfilling the promise of the personal computer : the development of accessible computer technologies, 1970-1998  

E-print Network

personal computer and software that was designed to augment therapy. IBM's accessibility work brought users into the development process;process was one way for companies to increase their user base in the skyrocketing personal computer software

Petrick, Elizabeth

2012-01-01

412

On effective actions from holography  

NASA Astrophysics Data System (ADS)

Inspired by holographic Wilsonian renormalization, we propose a novel perspective on the low-energy effective actions of confining gauge theories with gravity duals. By identifying the IR-boundary value of a certain bulk field as overlapping with the lightest mode of the field theory, we derive its on-shell effective action by integrating over the rest of the geometry. We illustrate the details of this formalism by computing chiral Lagrangian coefficients in a simple AdS/QCD toy model, finding agreement with previous results. At higher orders we obtain new results in that model, including a closed form for the four-pion scattering amplitude to all orders in momentum. Finally, we reformulate our method in terms of bulk Feynman diagrams.

Domokos, Sophia K.; Field, Matan

2014-08-01

413

Neural-net Processed Electronic Holography for Rotating Machines  

NASA Technical Reports Server (NTRS)

This report presents the results of an R&D effort to apply neural-net processed electronic holography to NDE of rotors. Electronic holography was used to generate characteristic patterns or mode shapes of vibrating rotors and rotor components. Artificial neural networks were trained to identify damage-induced changes in the characteristic patterns. The development and optimization of a neural-net training method were the most significant contributions of this work, and the training method and its optimization are discussed in detail. A second positive result was the assembly and testing of a fiber-optic holocamera. A major disappointment was the inadequacy of the high-speed-holography hardware selected for this effort, but the use of scaled holograms to match the low effective resolution of an image intensifier was one interesting attempt to compensate. This report also discusses in some detail the physics and environmental requirements for rotor electronic holography. The major conclusions were that neural-net and electronic-holography inspections of stationary components in the laboratory and the field are quite practical and worthy of continuing development, but that electronic holography of moving rotors is still an expensive high-risk endeavor.

Decker, Arthur J.

2003-01-01

414

A Study to Compare Curriculum of Computer Information Systems and Computer Education and Instructional Technologies  

ERIC Educational Resources Information Center

Today, developments of information and communication technologies have been developing very fast all over the world. These new technologies were taking an important place in education like other sciences. For this reason, education was developing parallel to new developments on the new technologies. Departments which cover curriculum of new…

Cavus, Nadire

2008-01-01

415

Computer Assisted Learning Applications for Teaching Language Technology - A View on the Pedagogical Aspect  

Microsoft Academic Search

This paper consists of a discussion about the pedagogical aspect of developing a computer assisted learning application for the discipline Language Technology. It discusses the influence of cognitive and behavioral learning theories on the development.

Tina Nielsen

2002-01-01

416

Swiss Federal Institute of Technology, Lausanne (EPFL) School of Computer and Communication Systems (I&C)  

E-print Network

Swiss Federal Institute of Technology, Lausanne (EPFL) School of Computer and Communication Systems (I&C) Graduate School in Communication Systems 2001-2002 Analyzing RBP, a Total Order Broadcast....................................................................................................6 3.1.1 Reliable Communication and Reliable Broadcast

Paris-Sud XI, Université de

417

Research on the application in disaster reduction for using cloud computing technology  

NASA Astrophysics Data System (ADS)

Cloud Computing technology has been rapidly applied in different domains recently, promotes the progress of the domain's informatization. Based on the analysis of the state of application requirement in disaster reduction and combining the characteristics of Cloud Computing technology, we present the research on the application of Cloud Computing technology in disaster reduction. First of all, we give the architecture of disaster reduction cloud, which consists of disaster reduction infrastructure as a service (IAAS), disaster reduction cloud application platform as a service (PAAS) and disaster reduction software as a service (SAAS). Secondly, we talk about the standard system of disaster reduction in five aspects. Thirdly, we indicate the security system of disaster reduction cloud. Finally, we draw a conclusion the use of cloud computing technology will help us to solve the problems for disaster reduction and promote the development of disaster reduction.

Tao, Liang; Fan, Yida; Wang, Xingling

418

Fast generation of computer-generated Fresnel hologram at video frame rate.  

E-print Network

???Computer-generated holography (CGH) is a technique of digitally generating holograms from real-world or synthetic three-dimensional (3D) objects with numerical computation. However, direct calculation, generally referred… (more)

Cheung, Wai-keung (???)

2012-01-01

419

The impact of new computer technology on accelerator control  

SciTech Connect

This paper describes some recent developments in computing and stresses their application in accelerator control systems. Among the advances that promise to have a significant impact are (1) low cost scientific workstations; (2) the use of ''windows'', pointing devices and menus in a multi-tasking operating system; (3) high resolution large-screen graphics monitors; (4) new kinds of high bandwidth local area networks. The relevant features are related to a general accelerator control system. For example, this paper examines the implications of a computing environment which permits and encourages graphical manipulation of system components, rather than traditional access through the writing of programs or ''canned'' access via touch panels.

Theil, E.; Jacobson, V.; Paxson, V.

1987-04-01

420

Challenges Substance Abuse Treatment Agencies Faced in Adoption of Computer-Based Technology to Improve Assessment  

Microsoft Academic Search

The Oregon Practice Improvement Collaborative provided resources and technical assistance to help five Oregon drug treatment\\u000a agencies adopt computer-based technology of their choice to support client progress in treatment. This manuscript describes\\u000a agency processes related to that adoption of technology. Agencies chose computer programs to improve clinical outcomes, reduce\\u000a staff burden, and respond to external pressures. Agencies used a combination

Jennifer Wisdom; Roy Gabriel; Eldon Edmundson; Sarann Bielavitz; Joe Hromco

2008-01-01

421

Computer Technologies in Education. Proceedings of the International Conference on Computer Technologies in Education (Kiev, Ukraine, September 14-17, 1993).  

ERIC Educational Resources Information Center

The conference reported in this document provides a meeting place for researchers from around the world, where the emphasis is on new ideas connected to computer technologies in education. This volume contains 140 extended abstracts selected by the program committee and organized into the following categories: (1) educational informational…

Petrushin, V., Ed.; Dovgiallo, A., Ed.

422

Dynamical Meson Melting in Holography  

E-print Network

We discuss mesons in thermalizing gluon backgrounds in the N=2 supersymmetric QCD using the gravity dual. We numerically compute the dynamics of a probe D7-brane in the Vaidya-AdS geometry that corresponds to a D3-brane background thermalizing from zero to finite temperatures by energy injection. In static backgrounds, it has been known that there are two kinds of brane embeddings where the brane intersects the black hole or not. They correspond to the phases with melted or stable mesons. In our dynamical setup, we obtain three cases depending on final temperatures and injection time scales. The brane stays outside of the black hole horizon when the final temperature is low, while it intersects the horizon and settles down to the static equilibrium state when the final temperature is high. Between these two cases, we find the overeager case where the brane dynamically intersects the horizon although the final temperature is not high enough for a static brane to intersect the horizon. The interpretation of this phenomenon in the dual field theory is meson melting due to non-thermal effects caused by rapid energy injection. In addition, we comment on the late time evolution of the brane and a possibility of its reconnection.

Takaaki Ishii; Shunichiro Kinoshita; Keiju Murata; Norihiro Tanahashi

2014-01-20

423

Dynamical Meson Melting in Holography  

E-print Network

We discuss mesons in thermalizing gluon backgrounds in the N=2 supersymmetric QCD using the gravity dual. We numerically compute the dynamics of a probe D7-brane in the Vaidya-AdS geometry that corresponds to a D3-brane background thermalizing from zero to finite temperatures by energy injection. In static backgrounds, it has been known that there are two kinds of brane embeddings where the brane intersects the black hole or not. They correspond to the phases with melted or stable mesons. In our dynamical setup, we obtain three cases depending on final temperatures and injection time scales. The brane stays outside of the black hole horizon when the final temperature is low, while it intersects the horizon and settles down to the static equilibrium state when the final temperature is high. Between these two cases, we find the overeager case where the brane dynamically intersects the horizon although the final temperature is not high enough for a static brane to intersect the horizon. The interpretation of thi...

Ishii, Takaaki; Murata, Keiju; Tanahashi, Norihiro

2014-01-01

424

Dynamical meson melting in holography  

NASA Astrophysics Data System (ADS)

We discuss mesons in thermalizing gluon backgrounds in the = 2 super-symmetric QCD using the gravity dual. We numerically compute the dynamics of a probe D7-brane in the Vaidya-AdS geometry that corresponds to a D3-brane background thermalizing from zero to finite temperatures by energy injection. In static backgrounds, it has been known that there are two kinds of brane embeddings where the brane intersects the black hole or not. They correspond to the phases with melted or stable mesons. In our dynamical setup, we obtain three cases depending on final temperatures and injection time scales. The brane stays outside of the black hole horizon when the final temperature is low, while it intersects the horizon and settles down to the static equilibrium state when the final temperature is high. Between these two cases, we find the overeager case where the brane dynamically intersects the horizon although the final temperature is not high enough for a static brane to intersect the horizon. The interpretation of this phenomenon in the dual field theory is meson melting due to non-thermal effects caused by rapid energy injection. In addition, we comment on the late time evolution of the brane and a possibility of its reconnection.

Ishii, Takaaki; Kinoshita, Shunichiro; Murata, Keiju; Tanahashi, Norihiro

2014-04-01

425

Simultaneous Conoscopic Holography and Raman Spectroscopy  

NASA Technical Reports Server (NTRS)

A new instrument was developed for chemical characterization of surfaces that combines the analytical power of Raman spectroscopy with the three-dimensional topographic information provided by conoscopic holography. The figure schematically depicts the proposed hybrid instrument. The output of the conoscopic holographic portion of the instrument is a topographical map of the surface; the output of the Raman portion of the instrument is hyperspectral Raman data, from which the chemical and/or biological composition of the surface would be deduced. By virtue of the basic principles of design and operation of the instrument, the hyperspectral image data would be inherently spatially registered with the topographical data. In conoscopic holography, the object and reference beams of classical holography are replaced by the ordinary and extraordinary components generated by a single beam traveling through a birefringent, uniaxial crystal. In the basic conoscopic configuration, a laser light is projected onto a specimen and the resulting illuminated spot becomes a point source of diffuse light that propagates in every direction. The laser beam is rasterscanned in two dimensions (x and y) perpendicular to the beam axis (z), and at each x,y location, the pattern of interference between the ordinary and extraordinary rays is recorded. The recorded interferogram constitutes the conoscopic hologram. Of particular significance for the proposed instrument is that the conoscopic hologram contains information on the z coordinate (height) of the illuminated surface spot. Hence, a topographical map of the specimen is constructed point-by-point by rastering the laser beam in the x and y directions and correlating the x and y coordinates with the z information obtained from the interferograms. Conoscopic imaging is an established method, and conoscopic laboratory instruments for surface metrology are commercially available. In Raman spectroscopy of a surface, one measures the spectrum of laser light scattered inelastically from a laser-illuminated spot on the surface. The wavelengths of the inelastically scattered light differ from that of the incident laser beam by amounts that correspond to the energies of molecular vibrations. The resulting vibrational spectrum can be used to identify the molecules. Raman spectroscopy is a standard laboratory technique for identifying mineralogical, biological, and other specific chemical compositions.

Schramm, Harry F.; Kaiser, Bruce

2005-01-01

426

Light-Front Holography and Hadronization at the Amplitude Level  

SciTech Connect

The correspondence between theories in anti-de Sitter space and conformal field theories in physical space-time leads to an analytic, semiclassical model for strongly-coupled QCD which has scale invariance at short distances and color confinement at large distances. Light-front holography is a remarkable feature of AdS/CFT: it allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. Some novel features of QCD are discussed, including the consequences of confinement for quark and gluon condensates and the behavior of the QCD coupling in the infrared. We suggest that the spatial support of QCD condensates is restricted to the interior of hadrons, since they arise due to the interactions of confined quarks and gluons. Chiral symmetry is thus broken in a limited domain of size 1/m{sub {pi}}, in analogy to the limited physical extent of superconductor phases. A new method for computing the hadronization of quark and gluon jets at the amplitude level, an event amplitude generator, is outlined.

Brodsky, Stanley J. [Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309 (United States) and the Institute for Particle Physics and Phenomenology, Durham (United Kingdom); Teramond, Guy F. de [Universidad de Costa Rica, San Jose (Costa Rica); Shrock, Robert [C.N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, NY 11794 (United States)

2008-10-13

427

Fresnel incoherent correlation holography (FINCH): a review of research  

NASA Astrophysics Data System (ADS)

In this review, we describe our method for creating holograms of incoherent objects, dubbed Fresnel incoherent correlation holography (FINCH). FINCH creates holograms by a single-channel on-axis incoherent interferometer process. Like any Fresnel hologram, the object is correlated with quadratic phase functions, but the correlation is carried out without any movement. Generally, in the FINCH system, light is reflected, or emitted, from a three-dimensional (3D) object, propagates through a spatial light modulator (SLM), and is recorded by a digital camera. The SLM is used as a beam-splitter of the single-channel incoherent interferometer, such that each spherical beam originated from each object point is split into two spherical beams with two different curve radiuses. Incoherent summing of the entire interferences between all the couples of the spherical beams creates the Fresnel hologram of the observed 3D object. When this hologram is reconstructed in the computer, the 3D properties of the object are revealed. In this review, we describe various aspects of FINCH which have been described recently, including FINCH of reflected white light, FINCH of fluorescence objects, a FINCH-based holographic fluorescence microscope, a FINCH configuration which capitalizes on the polarization sensitivity of the SLM and finally FINCH is analyzed in view of linear system theory.

Rosen, Joseph; Brooker, Gary

2012-07-01

428

Computer-Integrated Manufacturing Technology. Tech Prep Competency Profile.  

ERIC Educational Resources Information Center

This tech prep competency profile covers these occupations: manufacturing technician, computer-assisted design and drafting (CADD) technician, quality technician, and mechanical technician. Section 1 provides occupation definitions. Section 2 lists development committee members. Section 3 provides the leveling codes---abbreviations for grade level…

Lakeland Tech Prep Consortium, Kirtland, OH.

429

Acceptance of Computer Technology in the Corporate Public Affairs Function.  

ERIC Educational Resources Information Center

A survey of 160 top "Fortune" 500 companies was conducted in 1979 to determine the extent to which computers were being used in public affairs/government relations research and analysis. The survey instrument was divided into six sections, containing a total of 26 closed-end questions. The six sections elicited information on (1) public affairs…

Glenn, Martha Cole; And Others

430

To Bridge Art Therapy and Computer Technology: The Visual Toolbox.  

ERIC Educational Resources Information Center

Outlines how computers provide a transactional space in the art therapy process and how they can be used to support the interpersonal work that characterizes art therapy. Argues that therapists need to develop a strategy to work with software developers and designers to help them understand what is needed in the art therapy field. (Author/MKA)

Gussak, David E.; Nyce, James M.

1999-01-01

431

Grant Writing for Middle School Educators Using Computer Technology.  

ERIC Educational Resources Information Center

Argues that middle school educators can enhance the quality of education in the classroom by obtaining grants for special projects. Discusses the grant proposal writing process, successful grant writing strategies, and ways to integrate computers into grant writing. Outlines web site resources for grant writing. (SR)

Bartlett, James E., II; Mupinga, Davison M.; Higgins, Chad

2001-01-01

432

Technology Allows Engineers to Make Solid Objects from Computer Designs.  

ERIC Educational Resources Information Center

Computer operators using the technique of three-dimensional printing or rapid prototyping may soon be able to sculpt an object on the screen and within minutes, have a paper, plastic, or ceramic version of the object in hand. The process uses the principle that physical objects can be created in layers. (MSE)

Wheeler, David L.

1992-01-01

433

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

-spectral codes in combination with accurate in- terpolation methods for particle tracking are commonly used simulations in an Eulerian approach, while the particle trajectories are obtained by a Lagrangian approach. To compute the par- ticle trajectories the fluid velocity must be known at the particle positions

Eindhoven, Technische Universiteit

434

Atlantic Symposium on Computational Biology and Genome Information Systems & Technology  

E-print Network

Targets Group, Syngenta Gene Expression Analysis of a Plant Defense Response; from Profiles to Promoter Metabolic Network Models using Text Mining and Expert Knowledge J. A. Dickerson, D. Berleant, Z. Cox, W. Qi Physical Mapping of Plant Genomes Carol Soderlund, Associate Professor, Dept. of Computer Science, Clemson

Wang, Xiong

435

Computer Technology Can Enhance Presentation of Pharmacological Principles.  

ERIC Educational Resources Information Center

The use of liquid crystal display (LCD) techniques for projection of computer monitor images onto a large screen for classroom viewing is discussed and illustrated with a pharmacology class presentation on drug/neurotransmitter-receptor interactions. The method is seen as a way of bringing a new dynamic to visual instruction. (MSE)

Riffee, William H.

1991-01-01

436

COMPUTER MODEL TECHNOLOGY TRANSFER IN THE UNITED STATES  

EPA Science Inventory

Computer-based mathematical models for urban water resources planning, management and design are widely used by engineers and planners in both the public and private sectors. In the United States, the majority of the users are in the private (consulting) sector, yet most of the m...

437

Search Technology Internet Start-Ups Business Computing Companies  

E-print Network

by mapping where artifacts were found. But she was drawn to what she calls "all the computer and math stuff Apple Unveils `Cloud' Music and Storage Service1. Data Grows, and So Do Storage Sites2. Bits: Live: A Camera, a Card, a Connection7. Right Tools Unleash Creativity on an iPad8. A Stream of Postcards, Shot

Oyet, Alwell

438

Mindstuff--1 Mindstuff: Educational Technology Beyond the Computer  

E-print Network

ideas were on the then-current portrait of the desktop computer. 1. Introduction: Children, Materials, to create a gear set for children. Thus every child might have the experience I had. But to hope for this would be to miss the essence of the story. I fell in love with the gears." [Mindstorms, pp. vi

Eisenberg, Michael A.

439

Effects of Educational Beliefs on Attitudes towards Using Computer Technologies  

ERIC Educational Resources Information Center

This study, aiming to determine the relationship between pre-service teachers' beliefs about education and their attitudes towards utilizing computers and internet, is a descriptive study in scanning model. The sampling of the study consisted of 270 pre-service teachers. The potential relationship between the beliefs of pre-service teachers about…

Onen, Aysem Seda

2012-01-01

440

Children and Computers: New Technology--Old Concerns.  

ERIC Educational Resources Information Center

Places current research on children and computers in historical context with earlier research on the mass media, noting recurrent patterns in 20th century media research. Concludes that to inform and sustain the creation of more quality content for children, further research is needed on the effects of media on children, with new partnerships…

Wartella, Ellen A.; Jennings, Nancy

2000-01-01

441

Business and Technology Concepts--Business Computations. Teacher's Guide.  

ERIC Educational Resources Information Center

This Illinois State Board of Education teacher's guide on business computations is for students enrolled in the 9th or 10th grade. The course provides a foundation in arithmetic skills and their applications to common business problems for the senior high school vocational business courses. The curriculum guide includes teacher and student…

Illinois State Board of Education, Springfield. Dept. of Adult, Vocational and Technical Education.

442

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

and deposition on the colloidal dynamics in a saturated porous medium. At the pore scale, the aggregation-12 April 2014 Multiscale modeling of colloidal dynamics in porous media: Capturing aggregation and deposition effects by O. Krehel, A. Muntean, P. Knabner Centre for Analysis, Scientific computing

Eindhoven, Technische Universiteit

443

Young Women in Technology: Computing Through a Collaborative Workspace  

Microsoft Academic Search

This abstract is a brief overview of a portion of a research project that is exploring mechanisms for increasing the interest of female high school students in computing education and careers. In particular, we are investigating the impact of guided workshop activities in collaborative software development that are designed and delivered by female college students.

Lauren J. Hayward

444

Hindawi Publishing Corporation International Journal of Computer Games Technology  

E-print Network

, The Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK for Interactive Game Interfaces John Darby, Baihua Li, and Nick Costen Department of Computing and Mathematics Correspondence should be addressed to John Darby, j.darby@mmu.ac.uk Received 28 September 2007; Accepted 13

Li, Baihua

445

College and the Digital Generation: Assessing and Training Students for the Technological Demands of College by Exploring Relationships between Computer Self-Efficacy and Computer Proficiency  

ERIC Educational Resources Information Center

Today's college students are often labeled the "Net Generation" and assumed to be computer savvy and technological minded. Exposure to and use of technologies can increase self-efficacy regarding ability to complete desired computer tasks, but students arrive on campuses unable to pass computer proficiency exams. This is concerning because some…

Morris, Kathleen M.

2010-01-01

446

Interstellar Message Plaques: Application of White-Light Holography  

NASA Astrophysics Data System (ADS)

During Spring / Summer 2001, a prototype white-light holographic interstellar-probe message plaque was created under Contract H-29712D of NASA Marshall Spaceflight Center (MSFC), and commercial white-light holograms were tested for space-radiation tolerance at the MSFC Space Environment Facility (SEF) in Huntsville, AL, USA. Artist C Bangs' message plaque was created at the Center for Holographic Arts in Long Island City, NY. The 57.5 X 47.5 cm rainbow hologram was delivered to MSFC after framing by Simon Liu Inc., Brooklyn, NY, USA. The prototype message plaque, which is in the collection of the MSFC Space Transportation Directorate, has six multiplexed 2-D and 3-D images representing humans, the hypothetical interstellar spacecraft, and our position in the galaxy. Consultation with John Caulfield of Fisk University, an expert in holography, revealed that micron-thick holograms not much larger than a sheet of paper could contain hundreds of thousands of images, which opens the me ssage-plaque field considerably so that work of many artists could be included. Tests of commercial holograms at up to 100 MRad of simulated solar-wind radiation were performed at MSFC / SEF. Image-quality deterioriation was monitored using the image-color- histogram of the (trademarked) Adobe Photoshop software package. No significant deterioration occurred, which is in agreement with the literature. Holographic solar sails may be a propulsive application of this technology.

Matloff, G. L.

2002-01-01

447

Educational Computing in the Schools: Technology, Communication, and Literacy.  

ERIC Educational Resources Information Center

This book is a collection of articles that examine critical issues of technology, teaching, and learning in three areas: access, communication, and literacy. Following an Introduction by Jay Blanchard, articles are presented in three sections: Access and Opportunity; Online Communication; and Literacy. The articles include: "An Exploration of…

Blanchard, Jay, Ed.

448

Opportunities for Computing Technologies to Support Healthy Sleep Behaviors  

E-print Network

. INTRODUCTION Eating a nutritious diet, exercising regularly, and getting adequate sleep are three important to encourage healthy eating and exercise habits, track progress over time, and help people set and meet health community, the HCI community has placed considerably less attention on ways that technology can support

Anderson, Richard

449

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

-15 May 2009 Friction factor estimation for turbulent flows in corrugated pipes with rough walls by M FACTOR ESTIMATION FOR TURBULENT FLOWS IN CORRUGATED PIPES WITH ROUGH WALLS Maxim Pisarenco Dept. of Math of Technology P.O. Box 513, 5600 MB Eindhoven The Netherlands Email: b.j.v.d.linden@tue.nl Arris Tijsseling Dept

Eindhoven, Technische Universiteit

450

The Computer Catalog: A Democratic or Authoritarian Technology?  

ERIC Educational Resources Information Center

Discussion of consequences of library automation argues that technology should be used to augment access to information. Online public access catalogs are considered in this context, along with several related issues such as system incompatibility, invasion of privacy, barriers to database access and manipulation, and user fees, which contribute…

Adams, Judith A.

1988-01-01

451

Faculty's Acceptance of Computer Based Technology: Cross-Validation of an Extended Model  

ERIC Educational Resources Information Center

The first aim of the present study is to validate an extended technology acceptance model (TAME) on the data derived from the faculty members of a university in an ongoing, computer mediated work setting. The study extended the original TAM model by including an intrinsic motivation component--computer self efficacy. In so doing, the study…

Ahmad, Tunku Badariah Tunku; Madarsha, Kamal Basha; Zainuddin, Ahmad Marzuki; Ismail, Nik Ahmad Hisham; Nordin, Mohamad Sahari

2010-01-01

452

Can Traditional HCI Principles Be Applied to Computing Technology in Learning Contexts?  

E-print Network

. The approach presented here is illustrated through an exploratory research project aimed at understanding There has been surprisingly little research into computing technology for learning within the human of Interacting with Computers: While there are now established traditions of research and development

Pearce, Jon

453

The Impact of Computer Technology on the Composition of Written Business Communication.  

ERIC Educational Resources Information Center

The study examined the impact of computer technology on written business communication. Experimental groups (using microcomputers) and control groups (using typewriters) produced four written assignments. Findings indicate that computer use has a positive effect on attitudes about assignments but no effect on time efficiency or product quality.…

Olney, Robert J.

1987-01-01

454

PROGRAMME SPECIFICATION -UNDERGRADUATE PROGRAMMES Programme name Computer Science with Games Technology  

E-print Network

1 PROGRAMME SPECIFICATION - UNDERGRADUATE PROGRAMMES KEY FACTS Programme name Computer Science. The programme maintains a balance biased towards practical application focussed on primary computing technology of Informatics UCAS Code G490 Programme code USGTEC Type of study Full Time, Professional Pathway Total UK

Weyde, Tillman

455

The impact and issues of the fifth generation: Ethical issues in new computing technologies  

Microsoft Academic Search

The spread of computer applications throughout American society is a form of social action, not simply a “scientific” laboratory exercise. Like all social actions which effect the well-being of people, different approaches to computerization entail ethical judgements, however implicit. This session examines some ethical issues which are especially pertinent in the mobilization, development, and diffusion of new generation computing technologies.

Terry Winograd; Paul Smolensky; Roland Schinzinger

1984-01-01

456

Evaluation of Two Different Teaching Concepts in Dentistry Using Computer Technology  

ERIC Educational Resources Information Center

The common teaching goal of two different phantom head courses was to enable the students to provide an all-ceramic restoration by the means of computer technology. The aim of this study was to compare these two courses with regard to the different educational methods using identical computer software. Undergraduate dental students from a single…

Reich, Sven; Simon, James F.; Ruedinger, Dirk; Shortall, Adrian; Wichmann, Manfred; Frankenberger, Roland

2007-01-01

457

MSc CSYM021 Java Programming GJH: 2009 MSc Computing (Internet Technology)  

E-print Network

MSc CSYM021 ­ Java Programming © GJH: 2009 MSc Computing (Internet Technology) CSYM 021 Java 2: Kingsley Building ­ 1st Floor plan. #12;MSc CSYM021 ­ Java Programming © GJH: 2009 MSc Computing Programming Assignment: Development of 2D/3D Graphics Software: (100%). Due for Issue (week commencing

Hill, Gary

458

Educational Technology and the Restructuring Movement: Lessons from Research on Computers in Classrooms.  

ERIC Educational Resources Information Center

This paper presents findings from a recently completed study of the use of computers in primary classrooms as one source of evidence concerning the role technology can play in school restructuring efforts. The sites for the study were selected by Apple Computer, Inc. in the spring of 1988 and included 43 classrooms in 10 schools in 6 large, mostly…

Kell, Diane; And Others

459

Education/Technology/Power: Educational Computing as a Social Practice. SUNY Series, Frontiers in Education.  

ERIC Educational Resources Information Center

This book is organized in three parts that address the following broad topics related to educational computing: discursive practices, i.e., who speaks of educational computing and how (chapters 1-4); classroom practices (chapters 5-6); and democratic possibilities, i.e., the constructive potential of the technology (chapters 7-9). Following an…

Bromley, Hank, Ed.; Apple, Michael W., Ed.

460

Embedding Computer Technology in Developmentally Appropriate Practice: Engaging with Early Years Professionals' Beliefs and Values  

ERIC Educational Resources Information Center

The use of computers in early years has become a contentious issue, with advocates calling for more Information and Communications Technology (ICT), more machines, better software, and more training for professionals, while other groups call for "a moratorium on the further introduction of computers in early childhood and elementary education"…

Hall, Elaine; Higgins, Steven

2002-01-01

461

BACHELOR OF SCIENCE BUSINESS, COMPUTER AND INFORMATION TECHNOLOGY EDUCATION (Suggested 4 Year Plan)  

E-print Network

Student Teaching 12 EDUC 1330 Educating Exceptional Children* 3 EDUC 1301 Instructional Technology 3 MGMTBACHELOR OF SCIENCE BUSINESS, COMPUTER AND INFORMATION TECHNOLOGY EDUCATION (Suggested 4 Year Plan EDUC 1325 Development of Exceptional Children 3 EDUC 1350 Educational Psychology & Measurement 3 MRKT

Benos, Panayiotis "Takis"

462

Computing Technology for Learning--In Need of a Radical New Conception  

ERIC Educational Resources Information Center

Many have had high expectations for the impact of computer-based technology on educational practice. By and large, these expectations have not been realised. It has become evident that innovative technology alone does not necessarily guarantee progress--nor perhaps even significant change--in educational practice. This has led educational…

Beynon, Meurig

2007-01-01

463

The Impact of Iranian Teachers Cultural Values on Computer Technology Acceptance  

ERIC Educational Resources Information Center

This study was conducted with the aim of testing the technology acceptance model and the impact of Hofstede cultural values (masculinity/femininity, uncertainty avoidance, individualism/collectivism, and power distance) on computer technology acceptance among teachers at Urmia city (Iran) using the structural equation modeling approach. From among…

Sadeghi, Karim; Saribagloo, Javad Amani; Aghdam, Samad Hanifepour; Mahmoudi, Hojjat

2014-01-01

464

Integration of Computer-Based Technology into Speech-Language Therapy  

Microsoft Academic Search

Is the integration of technology into speech and language therapy a promising addition for children receiving speech and language services? In an effort to determine the effectiveness of technology integration for speech language therapy, this action research project focused on the use of a computer program, Sound Therapy Lite, by first- and second-grade students to address specific articulation goals for

Tiffany G. Murray; Verilette Parker

465

ETHICAL ASPECTS OF INFORMATION AND COMMUNICATION TECHNOLOGIES: COMPUTER ETHICS, INTERNET AND THE WORLD WIDE WEB  

Microsoft Academic Search

SUMMARY Information and communication technologies are invading all aspects of human existence a nd a re challenging many individual and social values. Computer technologies, Internet and the World Wide Web ha ve created p ossibilities at global level for individuals and organizations that were not available before. But many ethical questions have arisen because changes are affecting hu man relationships,

Luisa Montuschi

466

EMERGING AIR QUALITY MODELING TECHNOLOGY FOR HIGH PERFORMANCE COMPUTING AND COMMUNICATION ENVIRONMENTS  

EPA Science Inventory

To demonstrate applications of the HPCC technologies in air quality models, we organized the Specialty Evening Session 1, "Emerging Air Quality Modeling Technologies for High Performance Computing and Communication Environment" as a part of the Twenty First NATO/CCMS Internationa...

467

Technology Readiness, Internet Self-Efficacy and Computing Experience of Professional Accounting Students  

ERIC Educational Resources Information Center

Purpose: This study aims to assess the state of technology readiness of professional accounting students in Malaysia, to examine their level of internet self-efficacy, to assess their prior computing experience, and to explore if they are satisfied with the professional course that they are pursuing in improving their technology skills.…

Lai, Ming-Ling

2008-01-01

468

Science-Technology Coupling: The Case of Mathematical Logic and Computer Science.  

ERIC Educational Resources Information Center

In the history of science, there have often been periods of sudden rapprochements between pure science and technology-oriented branches of science. Mathematical logic as pure science and computer science as technology-oriented science have experienced such a rapprochement, which is studied in this article in a bibliometric manner. (Author)

Wagner-Dobler, Roland

1997-01-01

469

Computer Technology in Clinical Psychology Services for People with Mental Retardation: A Review.  

ERIC Educational Resources Information Center

Review of the literature on computer technology in clinical psychology services for people with mental retardation is organized around stages of a scientist-practitioner working model: assessment, formulation, and intervention. Examples of technologies to facilitate work at each stage are given. Practical difficulties with implementation of…

Davies, Sara; Hastings, Richard P.

2003-01-01

470

Computer-Aided Software Engineering (CASE): Technology for Improving Software Development Productivity  

Microsoft Academic Search

Today, system developers are challenged to produce complex, high quality software to support explosive demand for new and revised computer applications. This challenge is complicated by severe resource constraints, forcing management to deploy new technologies, methods and procedures to manage this increasingly complex environment. Often the methods, procedures and technologies are not integrated. Therefore, they achieve less than desired improvements

Albert F. Case Jr.

1985-01-01

471

Student perceived effectiveness of computer technology use in post-secondary classrooms  

Microsoft Academic Search

This study investigated the relationship between the amount of computer technology used in post- secondary education courses, students perceived effectiveness of technology use, and global course evalu- ations. Survey data were collected from 922 students in 51 courses at both the graduate and undergraduate levels. The survey consisted of 65 items broken down into seven areas, namely: (1) student characteristics,

Gretchen Lowerison; Jennifer Sclater; Richard F. Schmid; Philip C. Abrami

2006-01-01

472

Community Colleges in the Information Age: Gains Associated with Students' Use of Computer Technology  

ERIC Educational Resources Information Center

Computer literacy is increasingly important in higher education, and many educational technology experts propose a more prominent integration of technology into pedagogy. Empirical evidence is needed to support these theories. This study examined community college students planning to transfer to 4-year universities and estimated the relationship…

Anderson, Bodi; Horn, Robert

2012-01-01

473

Thinking Critically about Technological Literacy: Developing a Framework To Guide Computer Pedagogy in Technical Communication.  

ERIC Educational Resources Information Center

Considers how issues related to technological literacy can provide a useful frame for thinking critically about computer-based instruction in technical communication. Identifies issues of technological literacy related to performance, contextual factors, and linguistic activities in order for students to identify and analyze a range of…

Breuch, Lee-Ann Kastman

2002-01-01

474

GNG4120: Technology entrepreneurship for engineers and computer scientists Course description  

E-print Network

covers career choice, building a team, venture capital, and boards of advisers. #12;· Project deliverable issues about how to finance such a high-technology venture. Week 5 (Oct. 4th ) Marketing Guest speaker 4GNG4120: Technology entrepreneurship for engineers and computer scientists Course description

Petriu, Emil M.

475

Roadmap: Radiologic Imaging Sciences -Computed Tomography (with certification and ATS Radiologic Technology) -  

E-print Network

Roadmap: Radiologic Imaging Sciences - Computed Tomography (with certification and ATS Radiologic Technology) - Bachelor of Radiologic and Imaging Sciences Technology [RE-BRIT-RIS-CTHA] Regional College Hours] Note: Students must have graduated from a hospital-based certificate program in radiologic

Sheridan, Scott

476

Holography for chiral scale-invariant models  

E-print Network

Deformation of any d-dimensional conformal field theory by a constant null source for a vector operator of dimension (d + z -1) is exactly marginal with respect to anisotropic scale invariance, of dynamical exponent z. The holographic duals to such deformations are AdS plane waves, with z=2 being the Schrodinger geometry. In this paper we explore holography for such chiral scale-invariant models. The special case of z=0 can be realized with gravity coupled to a scalar, and is of particular interest since it is related to a Lifshitz theory with dynamical exponent two upon dimensional reduction. We show however that the corresponding reduction of the dual field theory is along a null circle, and thus the Lifshitz theory arises upon discrete light cone quantization of an anisotropic scale invariant field theory.

R. N. Caldeira Costa; Marika Taylor

2010-10-22

477

Quantum probabilities for inflation from holography  

NASA Astrophysics Data System (ADS)

The evolution of the universe is determined by its quantum state. The wave function of the universe obeys the constraints of general relativity and in particular the Wheeler-DeWitt equation (WDWE). For non-zero ?, we show that solutions of the WDWE at large volume have two domains in which geometries and fields are asymptotically real. In one the histories are Euclidean asymptotically anti-de Sitter, in the other they are Lorentzian asymptotically classical de Sitter. Further, the universal complex semiclassical asymptotic structure of solutions of the WDWE implies that the leading order in hbar quantum probabilities for classical, asymptotically de Sitter histories can be obtained from the action of asymptotically anti-de Sitter configurations. This leads to a promising, universal connection between quantum cosmology and holography.

Hartle, James B.; Hawking, S. W.; Hertog, Thomas

2014-01-01

478

Textile Graphics\\/Computer Aided: A course taught at the Fashion Institute of Technology  

Microsoft Academic Search

Textile Graphics\\/Computer Aided is the first course presented in the U.S. dealing with the processes of computer aided textile design and manufacture. Given to students and members of the textile industry at the Fashion Institute of Technology, the course is composed of 15 modules, each accompanied by a computer workshop, and is taught using a team-teaching approach. The course is

Ann C. Gubiotti; Pat Velderman; Nitta P. Dooner; Janice R. Lourie; Kay James; Lynn Nowakowski

1973-01-01

479

An application of interactive computer graphics technology to the design of dispersal mechanisms  

NASA Technical Reports Server (NTRS)

Interactive computer graphics technology is combined with a general purpose mechanisms computer code to study the operational behavior of three guided bomb dispersal mechanism designs. These studies illustrate the use of computer graphics techniques to discover operational anomalies, to assess the effectiveness of design improvements, to reduce the time and cost of the modeling effort, and to provide the mechanism designer with a visual understanding of the physical operation of such systems.

Richter, B. J.; Welch, B. H.

1977-01-01

480

Curriculums in Industrial Technology. Plastics Technology. Industrial Maintenance. Computer Numerical Control. Teacher's Manuals and Student Learning Guides.  

ERIC Educational Resources Information Center

Curriculum guides are provided for plastics technology, industrial maintenance, and computer numerical control. Each curriculum is divided into a number of courses. For each course these instructor materials are presented in the official course outline: course description, course objectives, unit titles, texts and materials, instructor resources,…

El Paso Community Coll., TX.

481

A Computer Oriented Problem Solving Unit, Consume. Student Guide. Computer Technology Program Environmental Education Units.  

ERIC Educational Resources Information Center

This is the student guide in a set of five computer-oriented environmental/energy education units. Contents are organized into the following parts or lessons: (1) introduction to power and energy; (2) energy consumption and supply; (3) energy conservation and distribution; (4) energy flow and the question of transportation; and (5) computer models…

Northwest Regional Educational Lab., Portland, OR.

482

CLOUD COMPUTING FUNDAMENTALS PROGRAM An eleven-week in-depth program in the principles, methods, and technologies of Cloud Computing  

E-print Network

CLOUD COMPUTING FUNDAMENTALS PROGRAM An eleven-week in-depth program in the principles, methods, and technologies of Cloud Computing DePaul University's Cloud Computing Fundamentals Program provides a comprehensive introduction to essential aspects of Cloud Computing. The program is designed to quickly educate

Schaefer, Marcus

483

Coupling High Resolution Earth System Models Using Advanced Computational Technologies  

Microsoft Academic Search

Abstract—The,NASA\\/GSFC Land Information System (LIS) has,now,been,successfully coupled,to the Weather,Research and Forecasting (WRF) and Goddard,Cumulus,Ensemble,(GCE) models,using parallel techniques,in a manner,compliant,with the Earth System Modeling Framework,(ESMF). LIS is a high- performance Land Data Assimilation System (LDAS), developed under funding from ESTO-CT’s Round-3 CAN, whose TRL3 technologies,have,been,advanced,to TRL4 the current,ESTO- AIST project. The original LIS consists of several land,sur- face models,run,in an uncoupled,manner,(i.e.

Christa Peters-Lidard; Sujay Kumar; Wei-Kuo Tao; Joseph Eastman; Xiping Zeng; Steve Lang; Paul Houser

484

Computer Technology/Special Education/Rehabilitation: Proceedings of the Conference (2nd, Northridge, California, October 16-18, 1986).  

ERIC Educational Resources Information Center

The following 25 papers (with their authors) are presented from a conference on computer technology in special education and rehabilitation: "Computers for Business--Computers for Life" (I. Keith Austin); "Rehabilitation and the Computer: How to Find What You Need" (Thomas Backer); "Computer Access Alternatives for Visually Impaired People in…

Murphy, Harry J., Ed.

485

POLICY ON ELECTRONIC PUBLISHING AND APPROPRIATE USE OF COMPUTING RESOURCES, INFORMATION TECHNOLOGIES, AND NETWORKS (Senate 4/1/99)  

E-print Network

. This Appropriate Use Policy governs the use of WSU computing resources, information technologies, and networks. This includes, but is not limited to, computers, computing staff, hardware, software, networks, computing laboratories, databases, files, information, software licenses, computing-related contracts, network bandwidth

Collins, Gary S.

486

Digital scene simulation /SUP sm/: The synergy of computer technology and human creativity  

SciTech Connect

Digital Scene Simulation is Digital Productions' philosophy for creating visual excellence in computer-generated imagery and simulation. The approach it advocates requires the use of powerful hardware, sophisticated software, and top creative talent. With a CRAY supercomputer at the heart of its computer network and its own proprietary image rendering and simulation software, Digital Productions is revolutionizing state-of-the-art computer graphics. At the forefront of computer graphics technology, Digital Productions is redefining traditional methods of visual communications and creating new forms of self-expression, instruction, and entertainment.

Demos, G.; Brown, M.D.; Weinberg, R.A.

1984-01-01

487

Cogeneration technology alternatives study. Volume 6: Computer data  

NASA Technical Reports Server (NTRS)

The potential technical capabilities of energy conversion systems in the 1985 - 2000 time period were defined with emphasis on systems using coal, coal-derived fuels or alternate fuels. Industrial process data developed for the large energy consuming industries serve as a framework for the cogeneration applications. Ground rules for the study were established and other necessary equipment (balance-of-plant) was defined. This combination of technical information, energy conversion system data ground rules, industrial process information and balance-of-plant characteristics was analyzed to evaluate energy consumption, capital and operating costs and emissions. Data in the form of computer printouts developed for 3000 energy conversion system-industrial process combinations are presented.

1980-01-01

488

Faculty Integration of Technology into Instruction and Students' Perceptions of Computer Technology to Improve Student Learning  

ERIC Educational Resources Information Center

There has been a remarkable improvement in access and rate of adoption of technology in higher education. Even so, reports indicate that faculty members are not integrating technology into instruction in ways that make a difference in student learning (Cuban, 2001; McCannon & Crews, 2000). To help faculty make informed decisions on student…

Keengwe, Jared

2007-01-01

489

Comparative evaluation of acoustic holography systems: Topical report  

SciTech Connect

The Sigma Research, Inc. SDL-1000 Acoustic Holography Imaging System developed under RP 606 was evaluated by the EPRI NDE Center. A preliminary evaluation completed in early 1986 included measuring the system performance for unclad surface inspections of the Program for the Inspection of Steel Components-II (PISC-II) Plate No. 2 and the Combustion Engineering (CE) plate and comparing it with the results of multifrequency holography system. Based on the preliminary investigation, a cooperative project between EPRI and the Babcock and Wilcox (B and W) Owners' Group was initiated to provide direction for possible future development efforts in acoustical holography. The project included the evaluation of the Sigma Research's SDL-1000 and the B and W's acoustical holography system. The project tasks were: an evaluation of the B and W Relative Partial Sums (RPS) procedure for setting the plotting threshold for reconstructed holographic images; re-analysis of the available 2 MHz data using the RPS procedure; collection of 5 MHz holographic data on the flaws in the CE slab; analysis of the 5 MHz data using the RPS procedure; and destructive sectioning of flaws in the CE plate to validate the RPS procedure for setting the image threshold and to compare acoustical holography system performance.

MacDonald, D.E.; Kietzman, E.K.

1987-04-01

490

From computer images to video presentation: Enhancing technology transfer  

NASA Technical Reports Server (NTRS)

With NASA placing increased emphasis on transferring technology to outside industry, NASA researchers need to evaluate many aspects of their efforts in this regard. Often it may seem like too much self-promotion to many researchers. However, industry's use of video presentations in sales, advertising, public relations and training should be considered. Today, the most typical presentation at NASA is through the use of vu-graphs (overhead transparencies) which can be effective for text or static presentations. For full blown color and sound presentations, however, the best method is videotape. In fact, it is frequently more convenient due to its portability and the availability of viewing equipment. This talk describes techniques for creating a video presentation through the use of a combined researcher and video professional team.

Beam, Sherilee F.

1994-01-01

491

Assessments of selected real-time computing technologies. Final report  

SciTech Connect

Developing dependable software for large, complex, real-time systems is one of the major challenges now facing the software industry. The software R and D community is responding to this challenge; numerous efforts have been initiated on various aspects of real-time software development. In this paper, we review and evaluate ongoing R and D efforts in light of the needs of strategic defense systems. We identify and discuss four recent developments that hold promise for facilitating the design and implementation of real-time software for strategic defense systems: (1) rate monotonic scheduling theory, (2) real-time extensions to the IEEE Portable Operating System Interface for Computer Environments (POSIX), (3) several distributed real-time operating system prototypes, and (4) various methods for enhancing real-time system robustness by trading precision of results for timeliness of results. We also point out an area of major concern to real-time software developers and, in particular, to the SDIO: the lack of analytical methods for evaluating the performance of complex real-time systems. We conclude with a series of recommendations on how the SDIO should follow up on the real-time R and D topics covered in the paper.

Gordon, K.D.; Rappoport, K.J.

1991-07-01

492

Technology pedagogy: Six teacher candidates' developing pedagogical models for the use of computers in science instruction  

NASA Astrophysics Data System (ADS)

This study investigated how teacher candidates' developing pedagogical beliefs and knowledge of technology influenced their perception of such tools in the teaching of subject matter as they complete the initial course work of their professional program. The purpose of the study was to conceptualize more clearly the relationship between prospective teachers' thinking about computer technology and the content of their professional education. A case study methodology was used to investigate changes in six pre-service secondary science teachers' thinking about technology as a pedagogical tool. Two of the teachers had extensive experience with technology upon entering the teacher preparation course-work, whereas the other four were novice computer users. Data included three semi structured interviews and non-participant observations during the technology course-work. Additional data were collected in the form of interviews with university faculty and cooperating teachers. Analysis of these data indicated that prospective candidates entered teacher education viewing technology as a tool that supports a teacher centered classroom. As the candidates explored more student centered approaches to teaching, they found less room for technology in their images of their future practice. The data also indicated that the technology course-work was isolated from the rest of the teacher education program and many of the misconceptions about technology that the candidates brought to their professional preparation were left unchallenged.

Myhre, Oddmund Reidar

1997-12-01

493

Use of video and computer technology in learning and teaching of gymnastics in a Teacher Preparation Program  

Microsoft Academic Search

The use of technology in teaching PE may be relatively new, so in an effort to explore this approach a gymnastics module for PE teacher-trainees was conducted using this video computer technology as a teaching or learning tool. This approach uses video recording of performances, computer image capturing, manipulation and computation using software known as 'Silicon-Coach'. Such software allows two

Michael Koh; John Tan; Tan Seng Chee

494

eUROPEAN nETWORK for aDVANCED cOMPUTING tECHNOLOGY for sCIENCE  

E-print Network

eUROPEAN nETWORK for aDVANCED cOMPUTING tECHNOLOGY for sCIENCE DISSEMINATION REPORT Compiled to foresee the future implications of the rapidly advancing Grid technology in computational sciences and Technology, Hellas And Department of Chemistry, University of Crete 1 #12;Table of Contents 1. INTRODUCTION

Farantos, Stavros C.

495

Computer Courseware Evaluations. A Series of Reports Compiled by the Clearinghouse Computer Technology Project.  

ERIC Educational Resources Information Center

This report reviews Apple computer courseware in business education, library skills, mathematics, science, special education, and word processing based on the curricular requirements of Alberta, Canada. It provides detailed evaluations of 23 authorized titles in business education (2), mathematics (20), and science (1); 3 of the math titles are…

Alberta Dept. of Education, Edmonton.

496

X-ray holography at Lawrence Livermore National Laboratory  

SciTech Connect

The x-ray holography program at the Lawrence Livermore National Laboratory has two principal goals: (1) the development of x-ray diffraction techniques for DNA sequence analysis and (2) the development of x-ray laser holography for structural analysis of intact biological cells and organelles. DNA sequence analysis will be accomplished by applying x-ray diffraction techniques to determine the ensemble average of the sequence of labels along the individual elements of crystalline DNA. X-ray laser holographic imaging will be accomplished by applying three dimensional x-ray holography to elucidate the structure of few hundred angstrom objects such as 300 {Angstrom} chromatin fibers, nuclear pores and nucleic acid replication complexes in living cells. Existing laboratory x-ray lasers will be utilized to produce flash x-ray holograms of the biological structures.

Trebes, J.; Annese, C.; Birdsall, D.; Brase, J.; Gray, J.; Lane, S.; London, R.; Matthews, D.; Peters, D.; Pinkel, D.; Stone, G.; Rapp, D.; Rosen, M.; Weier, U.; Yorkey, T.

1990-10-11

497

Application of digital holography in temperature distribution measurement  

NASA Astrophysics Data System (ADS)

The temperature variation of the testing sample can result in the density change of the surrounding air, and then the refractive index of the air is altered accordingly. Therefore, the temperature can be obtained by detecting the phase. In this contribution, the digital holography is presented to measure the temperature distribution, which can achieve the fullfield and non-destructive detection. The phase distribution can be determined by applying a single fast Fourier transform to the digital hologram. In the experiment, the LFT digital holography system is built and employed to inspect the temperature field of an electric soldering iron. The phase images are obtained, showing the temperature distributions around the iron with different position and time. The experimental results demonstrate the feasibility and effectiveness of the digital holography for the temperature measurement.

Wang, Yunxin; Wang, Dayong; Li, Yan; Zhao, Jie; Meng, Puhui; Wan, Yuhong; Jiang, Zhuqing

2010-10-01

498

Critical Issues Forum: A multidisciplinary educational program integrating computer technology  

SciTech Connect

The Critical Issues Forum (CIF) funded by the US Department of Energy is a collaborative effort between the Science Education Team of Los Alamos National Laboratory (LANL) and New Mexico high schools to improve science education throughout the state of New Mexico as well as nationally. By creating an education relationship between the LANL with its unique scientific resources and New Mexico high schools, students and teachers participate in programs that increase not only their science content knowledge but also their critical thinking and problem-solving skills. The CIF program focuses on current, globally oriented topics crucial to the security of not only the US but to that of all nations. The CIF is an academic-year program that involves both teachers and students in the process of seeking solutions for real world concerns. Built around issues tied to LANL`s mission, participating students and teachers are asked to critically investigate and examine the interactions among the political, social, economic, and scientific domains while considering diversity issues that include geopolitical entities and cultural and ethnic groupings. Participants are expected to collaborate through telecommunications during the research phase and participate in a culminating multimedia activity, where they produce and deliver recommendations for the current issues being studied. The CIF was evaluated and found to be an effective approach for teacher professional training, especially in the development of skills for critical thinking and questionin